CN116513757A - Control method and device for return cleaning of conveyor belt - Google Patents

Abstract

The invention discloses a control method and device for return cleaning of a conveyor belt. Wherein, the method includes: detecting whether the cleaning box has risen to a predetermined cleaning position, and obtaining a first detection result; if the first detection result is yes, detecting whether the space between the cleaning box and the return journey of the conveyor belt is formed relative to the outside of the cleaning box Flowing negative pressure to get the second detection result; if the second detection result is yes, control the cleaning box to clean the return journey of the conveyor belt under the flowing negative pressure. The invention solves the technical problem of incomplete cleaning of the return journey of the conveyor belt in the prior art.

Description

Control method and device for return cleaning of conveyor belt

technical field

The invention relates to the field of intelligent control, in particular to a control method and device for return cleaning of conveyor belts.

Background technique

In related technologies, there are more and more scenarios where conveyor belts are used to transport materials, but for the transmission process itself, after transporting various materials, residual materials may stick to the conveyor belt and be difficult to remove, thereby affecting the normal operation of the conveyor belt. At the same time, due to more or less residues of materials, it may also affect the quality of subsequent transported products, or it is necessary to use manpower and material resources to clean the conveyor belt by manually controlling the cleaning equipment, but only manual control methods cannot achieve safety. Effective and thorough cleaning of the conveyor belt.

In the current prior art, since the surface of the conveyor belt will also drop dust over time, it is far from enough to clean the conveyor belt only by manually controlling the cleaning equipment. And due to the increase of human resources, not only the cost of cleaning the conveyor belt is increased, but also the cleaning equipment cannot be safely and effectively controlled to thoroughly clean the conveyor belt, which reduces the work efficiency of cleaning the conveyor belt. For the above problems, no effective solution has been proposed yet.

Contents of the invention

Embodiments of the present invention provide a control method and device for backhaul cleaning of conveyor belts, so as to at least solve the technical problem of incomplete backhaul cleaning of conveyor belts in the prior art.

According to an aspect of an embodiment of the present invention, there is provided a control method for backhaul cleaning of a conveyor belt, including: detecting whether the cleaning box has risen to a predetermined cleaning position, and obtaining a first detection result; if the first detection result is yes , detecting whether a flow negative pressure is formed in the space between the cleaning box and the return journey of the conveyor belt relative to the outside of the cleaning box, and obtaining a second detection result; if the second detection result is yes, control the cleaning box The return of the conveyor belt is cleaned under the negative flow pressure.

Optionally, when the first detection result is yes, it is detected whether a flow negative pressure is formed in the space between the cleaning box and the return journey of the conveyor belt relative to the outside of the cleaning box, and the second detection result is obtained, including: In the case where the first detection result is yes, it is detected whether the conveyor belt is in a running state, and whether the high-pressure water pump that provides high-pressure water for the high-pressure water pipe in the cleaning box is supplied with water; when the detection result is that the conveyor belt is in In the running state, when the high-pressure water pump is supplying water, it is detected whether a negative pressure is formed in the space between the cleaning box and the return journey of the conveyor belt relative to the outside of the cleaning box, and the second detection result is obtained.

Optionally, when the detection result includes that the high-pressure water pump is supplying water, the method further includes: detecting whether the filter element of the clean water filter is in a blocked state, wherein the clean water filter is used for transporting Filter the water before going to the high pressure water pump.

Optionally, the detecting whether the filter element of the clean water filter is in a blocked state includes: obtaining the first water pressure before passing through the clean water filter and the second water pressure after passing through the clean water filter; A water pressure difference between the first water pressure and the second water pressure is obtained; based on the water pressure difference, it is determined whether the filter element of the clean water filter is in a blocked state.

Optionally, the controlling the cleaning box to clean the return journey of the conveyor belt under the flow negative pressure includes: opening a high-pressure water pipe connected to the cleaning box to flush the return journey of the conveyor belt; controlling the The scraper in the cleaning box scrapes off the material on the return journey of the conveyor belt after washing; the suction pipe connected to the cleaning box is opened to suck the space between the cleaning box and the return journey of the conveyor belt, and the scraper Leave the conveyor belt return air dry after operation.

Optionally, after the opening of the high-pressure water pipe connected to the cleaning box to flush the return journey of the conveyor belt, it also includes: using a frequency conversion motor to drive a high-pressure water pump connected to the high-pressure water pipe, and adjusting the high-pressure water pump to adjust the water pressure in the high-pressure water pipe.

Optionally, the controlling the cleaning box to clean the return journey of the conveyor belt under the flow negative pressure further includes: opening the air lock valve in the cleaning box to clean the collected sewage in the cleaning box Discharge through the main sewage outlet; close the bypass sewage valve in the cleaning box, wherein, when the bypass sewage valve is opened, it is used to discharge the sewage collected in the cleaning box and cleaned from the return journey of the conveyor belt; close the fan A channel filter drain valve, wherein, when the air channel filter drain valve is opened, it is used to discharge the sewage in the air channel filter, and the air channel filter is used to filter out the sewage from the wind sucked from the cleaning box sewage.

Optionally, after controlling the cleaning box to clean the return journey of the conveyor belt under the flow negative pressure, it also includes: detecting whether the liquid level sensed by the cleaning box liquid level sensor in the cleaning box exceeds The first liquid level threshold, when the detection result is that the liquid level sensed by the cleaning tank liquid level sensor in the cleaning tank exceeds the first liquid level threshold, a first warning message is issued, wherein the first The alarm information is used to prompt that the bypass drain valve in the cleaning box needs to be opened to discharge the sewage in the cleaning box; the liquid detected by the air duct filter liquid level sensor in the air duct filter is detected. Whether the liquid level exceeds the second liquid level threshold, and if the detection result is that the liquid level sensed by the air duct filter liquid level sensor in the air duct filter exceeds the second liquid level threshold, a second warning message is issued , wherein the second warning message is used to prompt that the air duct filter drain valve on the air duct filter needs to be opened to discharge the sewage in the air duct filter.

Optionally, the controlling the cleaning box to clean the return journey of the conveyor belt under the flow negative pressure also includes: setting an exhaust valve at the fan outlet of the centrifugal fan connected to the suction pipe In some cases, the exhaust volume of the centrifugal fan is controlled by controlling the opening of the exhaust valve.

Optionally, after controlling the cleaning box to clean the return journey of the conveyor belt under the flow negative pressure, it also includes: detecting whether the conveyor belt stops running; if the detection result is that the conveyor belt stops running, Close the high-pressure water pump that provides high-pressure water for the high-pressure water pipe, stop the high-pressure water pipe to flush the return of the conveyor belt; turn off the centrifugal fan that sucks the space between the cleaning box and the return of the conveyor belt, and stop the cleaning of the conveyor belt. The space is suctioned; the scraper is controlled to stop scraping off the materials on the return journey of the conveyor belt after washing.

Optionally, when the detection result is that the conveyor belt stops running, the method further includes: opening a bypass drain valve in the cleaning box to discharge open the air duct filter blowdown valve to discharge the sewage filtered out from the wind sucked in the cleaning box in the air duct filter; control the air lock valve in the cleaning box to continue to run for a predetermined period of time, so that The sewage in the cleaning box has been discharged smoothly.

Optionally, when the detection result is that the conveyor belt stops running, the method further includes: controlling the cleaning box to descend to a predetermined placement position.

According to another aspect of the embodiment of the present invention, there is also provided a control device for backhaul cleaning of the conveyor belt, including: a first detection module, used to detect whether the cleaning box has risen to a predetermined cleaning position, and obtain the first detection result; the second detection module A module, configured to detect whether a flow negative pressure is formed in the space between the cleaning box and the return journey of the conveyor belt relative to the outside of the cleaning box when the first detection result is yes, and obtain a second detection result; a control module , for controlling the cleaning box to clean the return journey of the conveyor belt under the flow negative pressure when the second detection result is yes.

According to yet another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium, the computer-readable storage medium includes a stored program, wherein when the program is running, the computer-readable storage medium is controlled The equipment implements the control method for the return cleaning of the conveyor belt described in any one of the above.

According to still another aspect of the embodiments of the present invention, there is also provided a computer device, including: a memory and a processor, the memory stores a computer program; the processor is configured to execute the computer program stored in the memory, When the computer program runs, the processor executes the control method for backhaul cleaning of the conveyor belt described in any one of the above.

In the embodiment of the present invention, the detection result is obtained by detecting the position of the cleaning box and the negative pressure state of the space between the cleaning box and the return journey of the conveyor belt. Based on the detection result, the cleaning box is controlled to clean the return journey of the conveyor belt, and the conveyor belt The purpose of thorough cleaning on the return trip realizes the automatic determination of the cleaning state of the cleaning box, thereby controlling the cleaning box to clean the return trip of the conveyor belt more comprehensively and thoroughly, so as to improve the working efficiency of the return trip of the conveyor belt. The technical problem of incomplete cleaning of the return journey of the conveyor belt.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

1 is a flow chart of a control method for conveyor belt backhaul cleaning according to an embodiment of the present invention;

2 is a schematic diagram of a conveyor belt cleaning device according to an embodiment of the present invention;

3 is a logic diagram of a conveyor belt cleaning control method according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of a control device for backhaul cleaning of a conveyor belt according to an embodiment of the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

According to an embodiment of the present invention, a method embodiment of a control method for backhaul cleaning of a conveyor belt is provided. It should be noted that the steps shown in the flow charts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions , and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

Fig. 1 is the flow chart of the control method of conveyor belt backhaul cleaning according to the embodiment of the present invention, as shown in Fig. 1, this method comprises the following steps:

Step S102, detecting whether the cleaning box has risen to a predetermined cleaning position, and obtaining a first detection result;

As an optional embodiment, the control method for the return cleaning of the conveyor belt can be applied to conveyor belt cleaning, wherein the conveyor belt can be a variety of conveyor belts or belts with belt transport functions, used to transport materials or transport large, medium and small items . For example: the conveyor belt for transporting chemical raw materials in the chemical industry, the above-mentioned chemical raw materials can include a variety of chemicals, the conveyor belt for transporting metal powder, coal and other items in the metallurgical industry, the conveyor belt for transporting grain and grass in the grain industry, and so on.

As an optional embodiment, by detecting whether the cleaning box has risen to a predetermined cleaning position, determining the cleaning position of the cleaning box can effectively provide cleaning for the return journey of the conveyor belt. The above-mentioned cleaning box can be any box with a cleaning function. The cleaning box may include: a scraper for cleaning the dirt on the conveyor belt and scraping off the sewage attached to the conveyor belt after cleaning, and a cleaning device for self-cleaning the cleaning box after the cleaning work is completed. A lifting device can also be installed on the cleaning box to lift the cleaning box to the predetermined cleaning position to ensure that it can cooperate with other equipment or the position of the conveyor belt in the future, so as to carry out the return cleaning of the conveyor belt normally.

Step S104, if the first detection result is yes, detect whether the space between the cleaning box and the return journey of the conveyor belt forms a flow negative pressure relative to the outside of the cleaning box, and obtain the second detection result;

As an optional embodiment, after detecting that the position of the cleaning box has risen to the predetermined cleaning position, whether the space between the cleaning box and the return journey of the conveyor belt can form a flow negative pressure relative to the pressure outside the cleaning box, use the flow Negative pressure is used to speed up the air circulation in the space between the cleaning box and the conveyor belt return, so that the cleaned conveyor belt can be dried quickly.

As an optional embodiment, when the first detection result is yes, it is detected whether a flow negative pressure is formed in the space between the cleaning box and the return journey of the conveyor belt relative to the outside of the cleaning box, and the second detection result is obtained, including: If the first detection result is yes, it is necessary to detect whether the conveyor belt is in the running state, and it is meaningful to clean the conveyor belt in the running state, and to detect whether the high-pressure water pump that provides high-pressure water for the high-pressure water pipe in the cleaning box has water supply to ensure the follow-up During the cleaning process, the supply of water source prevents water shortage so that the cleaning equipment in the cleaning box rubs against the conveyor belt, which will cause the conveyor belt to be damaged to a certain extent; when the detection result shows that the conveyor belt is in operation and the high-pressure water pump has water supply, the cleaning is detected. Whether the space between the box and the return journey of the conveyor belt forms a flow negative pressure relative to the outside of the cleaning box, the second detection result is obtained.

As an optional embodiment, when the detection result includes the state that the high-pressure water pump has water supply, it also includes: detecting whether the filter element of the clean water filter is in a blocked state, wherein the clean water filter is used for transporting water to high-pressure The water before the pump is filtered.

As an optional embodiment, the above-mentioned clean water filter can also be provided with a water pressure sensor, and water pressure sensors can be respectively set above and below the filter core of the clean water filter to detect whether the filter core of the clean water filter is in a blocked state , including: obtaining the first water pressure before passing through the clean water filter and the second water pressure after passing through the clean water filter; obtaining the water pressure difference between the first water pressure and the second water pressure; based on the water pressure difference, Determine whether the filter element of the clean water filter is clogged.

As an optional embodiment, when detecting whether the filter element of the clean water filter is in the state of being blocked, there can be many ways, for example: directly according to the output water flow rate, observe whether the filter element of the clean water filter is blocked, or Set a water meter at the water outlet, and judge whether the water output under the preset water pressure is normal based on the preset pressure and the water output count of the water meter, so as to determine whether the filter element of the clean water filter is blocked.

S106, if the second detection result is yes, control the cleaning box to clean the return journey of the conveyor belt under the flow negative pressure.

As an optional embodiment, when it is detected that there is negative pressure, the high-pressure water pipe connected to the cleaning box can be controlled to flush the return journey of the conveyor belt; The materials on the conveyor belt are scraped off; the suction pipe connected to the cleaning box is opened to suck the space between the cleaning box and the return journey of the conveyor belt, and the return journey of the conveyor belt after the scraping operation is air-dried. The above-mentioned high-pressure water pipe can be connected with the clean water filter, and the water pressure can be adjusted. The scraper in the above-mentioned cleaning box can be adjusted in various ways, for example: adjust the angle between the scraper and the conveyor belt, because the materials attached to the conveyor belt may include Hard objects are difficult to scrape off, and materials need to be scraped off at a relatively large angle. If the angle between the scraper and the conveyor belt is small, the conveyor belt will clamp the hard objects and drag, which may easily cause scratches on the conveyor belt.

As an optional embodiment, the above-mentioned control opens the high-pressure water pipe connected to the cleaning box to flush the return journey of the conveyor belt. A variable frequency motor can be used to drive the high-pressure water pump connected to the high-pressure water pipe. The above-mentioned high-pressure water pump can determine different high-pressure water to flush the conveyor belt based on the materials transported by the conveyor belt. For example, the conveyor belt transports materials such as coal mines and cement that are easily attached or adhered to the surface of the conveyor belt. At this time, high-pressure water with high water pressure can be selected to clean the conveyor belt. The conveyor belt transports large objects, such as express delivery, luggage and other items that will not adhere to the surface of the conveyor belt. It is only necessary to consider the dust that may adhere to the surface of the conveyor belt due to long-term exposure. Compared with coal mines and cement, dust is easier to wash. You can choose water with lower water pressure to flush the conveyor belt. If the water pressure is too high, it is easy to wash the dust into more viscous soil that is more likely to adhere to the surface of the conveyor belt. Based on this, the cleaning of the conveyor belt can be realized more selectively and intelligently.

As an optional embodiment, controlling the cleaning box to clean the return journey of the conveyor belt under the flow negative pressure also includes: opening the air lock valve in the cleaning box, and discharging the collected sewage in the cleaning box through the main sewage outlet; closing The bypass sewage valve in the cleaning box, wherein, when the bypass sewage valve is opened, it is used to discharge the sewage collected in the cleaning box from the return journey of the conveyor belt; the above-mentioned air lock valve can discharge the sewage after cleaning the conveyor belt to the sewage collection device or For other conveyor belts used to transport sewage, the above-mentioned air lock valve discharges sewage and blanking materials in a rotating manner, and is different from other sewage discharge methods in that the use of air lock valves can ensure that the negative pressure environment in the cleaning box does not destroyed, so that the cleaning work can be carried out normally.

As an optional embodiment, when the cleaning box is controlled to clean the return journey of the conveyor belt under negative flow pressure, it is also possible to: detect whether the liquid level sensed by the cleaning box liquid level sensor in the cleaning box exceeds the first liquid level threshold, When the detection result is that the liquid level sensed by the cleaning tank liquid level sensor in the cleaning box exceeds the first liquid level threshold, a first warning message is issued, wherein the first warning message is used to prompt that the cleaning box needs to be opened. Through the sewage valve to discharge the sewage in the cleaning box; by setting a liquid level sensor in the cleaning box, the liquid level of the sewage can be measured in time, and the liquid level can be used to judge whether the main sewage outlet is in normal operation, or the main sewage outlet Whether the sewage can be discharged smoothly in time. When the liquid level exceeds the first liquid level threshold, it is determined that the main sewage outlet cannot discharge sewage smoothly. At this time, an alarm message is issued to warn that the sewage is stored too much, and the bypass sewage valve is opened for Auxiliary discharge of sewage.

As an optional embodiment, the above-mentioned control cleaning box cleans the return journey of the conveyor belt under the flow negative pressure, and can also detect whether the liquid level sensed by the air duct filter liquid level sensor in the air duct filter exceeds the second liquid level. level threshold, when the detection result is that the liquid level sensed by the air duct filter liquid level sensor in the air duct filter exceeds the second liquid level threshold, a second warning message is issued, wherein the second warning message is used to prompt It is necessary to open the air duct filter drain valve on the air duct filter to discharge the sewage in the air duct filter. In the process of drying the cleaned conveyor belt with negative pressure, the air duct filter may suck some sewage, and a liquid level sensor is installed in the air duct filter to sense the sewage liquid level in the air duct filter. When the liquid level exceeds the second liquid level threshold, an alarm message is issued to indicate that there is too much sewage in the air duct filter, and the air duct filter drain valve is opened to discharge the sewage in the air duct filter.

As an optional embodiment, the above-mentioned control cleaning box cleans the return journey of the conveyor belt under the flow negative pressure, and also includes: when the fan outlet of the centrifugal fan connected to the suction pipe is provided with an exhaust valve, through Control the opening of the exhaust valve and control the exhaust air volume of the centrifugal fan. The centrifugal fan sucks the air in the cleaning box through the suction pipe, so that the space between the cleaning box and the return journey of the conveyor belt is in a negative pressure state relative to the outside of the cleaning box, so as to suck and dry the cleaned conveyor belt. Specifically, the above The exhaust valve can also adjust the opening based on the humidity of the conveyor belt. When the humidity of the conveyor belt is high, the opening of the exhaust valve can be increased to speed up the drying of the conveyor belt. When the humidity of the conveyor belt is low, it can be reduced. The opening of the exhaust valve reduces the negative pressure.

As an optional embodiment, the above-mentioned control cleaning box cleans the return journey of the conveyor belt under the flow negative pressure, and also includes: detecting whether the conveyor belt stops running; Stop the high-pressure water pipe to flush the return journey of the conveyor belt; turn off the centrifugal fan that sucks the space between the cleaning box and the return journey of the conveyor belt, and stop the suction of the space; control the scraper to stop washing the return journey of the conveyor belt The material is scraped off. After detecting that the conveyor belt stops working, stop the water supply and the suction of the centrifugal fan, restore the pressure between the cleaning box and the return journey of the conveyor belt to a normal value, and stop the scraping operation of the conveyor belt by the scraper to prevent continuous scraping in the absence of water Handling scratches the conveyor belt.

As an optional embodiment, when it is detected that the conveyor belt stops running, the bypass sewage valve in the cleaning box is opened to discharge the sewage collected in the cleaning box from the return journey of the conveyor belt; the air duct filter sewage valve is opened to discharge the air duct In the filter, the sewage is filtered out from the wind sucked in the cleaning box; the air lock valve in the cleaning box is controlled to continue running for a predetermined period of time, so that the sewage in the cleaning box can be discharged smoothly.

As an optional embodiment, there are many ways to control the predetermined duration of the continuous operation of the air lock valve in the cleaning box, for example: setting the predetermined duration based on the maximum capacity of the sewage in the cleaning tank to prevent the predetermined duration from being insufficient, so that it can be drained For sewage, a predetermined duration can also be set based on the liquid level data returned by the liquid level sensor in the cleaning tank.

As an optional embodiment, it is detected that the conveyor belt stops running, and the cleaning box is controlled to drop to a predetermined placement position. The predetermined placement position can be various, for example: it can be the position where the maintenance equipment used to maintain the internal equipment of the cleaning box is connected, It may also be a convenient position for observing the internal situation of the cleaning box after the cleaning box has been cleaned.

Through the above steps, detect the position of the cleaning box, detect the negative pressure state of the space between the cleaning box and the return of the conveyor belt, and obtain the detection results. Based on the detection results, the cleaning box is controlled to clean the return of the conveyor belt, so that the return of the conveyor belt can be thoroughly cleaned. The purpose is to realize the automatic determination of the cleaning state of the cleaning box, thereby controlling the cleaning box to clean the return of the conveyor belt more comprehensively and thoroughly, so as to improve the technical effect of the work efficiency of the return cleaning of the conveyor belt, and then solve the problem of the return of the conveyor belt in the prior art. Incomplete cleaning of technical problems.

Based on the foregoing embodiments and preferred embodiments, an optional implementation manner is provided.

In the related art, cleaning equipment is generally used to clean the conveyor belt, or the conveyor belt is cleaned manually directly. The materials conveyed by the conveyor belt may contain viscous substances, such as mud, lime, etc., and may also transport chemical raw materials, such as metal powder, toxic chemicals, etc. In the prior art, mechanical cleaning equipment is used to clean and manually clean the conveyor belt. Cleaning the conveyor belt not only has the disadvantage of consuming a lot of human resources, but also if the conveyor belt for transporting chemical raw materials is cleaned manually, it will also cause certain harm to the human body. Therefore, the method of manual cleaning and cleaning While the method may cause harm to the human body, it also reduces the cleaning efficiency, greatly increases the cleaning cost, and cannot thoroughly clean the return journey of the conveyor belt.

Based on the above problems, in this optional embodiment, a conveyor belt return cleaning device and its control system are provided. FIG. 2 is a schematic diagram of an optional conveyor belt cleaning device according to an embodiment of the present invention, as shown in FIG. 2 , the conveyor belt cleaning device combined with the conveyor belt return cleaning equipment control system can realize intelligent cleaning of the conveyor belt. The device includes the following:

201, water supply valve; 202, clean water filter; 203, water pressure sensor a; 204, high-pressure water pump; 205, cleaning box; 206, air duct filter; 207, fan; 208, fan exhaust valve; 209, air duct Filter drain valve; 210, air duct filter liquid level sensor; 211, cleaning tank liquid level sensor; 212, bypass drain valve; 213, air lock valve; 214, water pressure sensor b.

As shown in Figure 2, the water supply valve (201) is used to provide water supply for the cleaning equipment; the clear water filter (202) is used to filter the water supply before cleaning the conveyor belt, and can filter out impurities in the water; the water pressure sensor a ( 203), set at the water inlet end, used to detect the water supply pressure; water pressure sensor b (214), set at the water outlet end, used to detect the water pressure after passing through the filter, combined with the water pressure sensor a (203), using clean water The pressure difference between the inlet and outlet of the filter (202) is compared with the value set by the system to determine whether the filter is clogged, thereby reminding the operator to clean the filter element; the high-pressure water pump (204) is used to obtain high-pressure water; the cleaning box (205) is used to For cleaning the surface of the conveyor belt, there is a cleaning device inside; the air channel filter (206) is used to store the sewage sucked due to negative pressure; the fan (207) is used to extract the air in the cleaning box to a negative pressure state; the fan exhausts the air The opening of the valve (208) can be adjusted according to the needs of the system, and it is used for fan exhaust; the blowdown valve of the air duct filter (209) can be opened according to the sewage liquid level in the air duct filter or directly controlled by the system, Used to discharge the sewage stored in the air duct filter; the air duct filter liquid level sensor (210), used to obtain the liquid level data of the sewage in the air duct filter; the cleaning tank liquid level sensor (211), used to obtain the cleaning The liquid level data of the sewage in the tank; the bypass sewage valve (212) is used to assist in discharging the sewage in the cleaning tank when the air lock valve (213) is blocked; Sewage in the cleaning box (205) ensures that the cleaning device operates under negative pressure all the time, and does not leak air and release pressure from here.

Install high-pressure spray rods, nozzles, and scraper-type cleaners inside the cleaning box. At the same time, set an air lock valve and a bypass sewage valve at the bottom of the cleaning box. At the same time, the cleaning box can be lifted up and down relative to the conveyor belt. Turn off the fan and water pump, open the bypass pipeline, and the air lock valve continues to operate for a specific time, and the overall cleaning box is lowered to a certain height, so as to ensure that the cleaning device does not contact the conveyor belt when it is not working, and there will be no risk of cleaning box accumulation and blockage.

At the same time, a liquid level sensor is installed in the cleaning tank, and the liquid level in the cleaning tank can be obtained by obtaining the data sent back to the system by the liquid level sensor. If the liquid level in the cleaning tank is higher than the set height, the bypass drain valve will open , discharge the sewage in the cleaning box in time to prevent the accumulation of sewage in the box and overflow, resulting in risks.

A drain valve is designed at the bottom of the air duct filter to discharge the sewage inside the air duct filter. A liquid level sensor is installed inside the air duct filter. Based on the liquid level sensor, the sewage liquid level inside the air duct filter can be obtained. If the liquid level is higher than the set height, the drain valve will open to discharge the sewage in the air duct filter and prevent the sewage in the filter from settling.

The outlet of the fan is designed with an exhaust valve, which can control the opening according to the needs of the system. For example, there is a scraper in the cleaning box. The scraper can adjust the fit with the conveyor belt based on the magnitude of the negative pressure. The greater the negative pressure, The tighter the fit between the scraper and the conveyor belt, when the system judges that the material stuck on the conveyor belt needs to be scraped and fit better, the opening of the exhaust valve can be adjusted to be larger, so as to realize the need for cleaning the conveyor belt.

The water pump is driven by a variable frequency motor. The pressure of the water system can be set in the operating system. By adjusting the speed of the water pump motor, the water pressure can be adjusted to ensure the water pressure requirements of different materials, save power consumption, and be more economical.

Under normal circumstances, the conveyor belt return cleaning equipment is in the power supply state. When the conveyor belt is not working, the cleaning box is in the down state. The programmable logic controller (PLC) will detect the status of the cleaning box in real time to ensure that when the conveyor belt that needs to be cleaned is working and rotating, the PLC will The control system will receive the operation signal, and then the PLC will detect whether there is water supply through the water pressure sensor. When everything is normal, start the water pump, fan, and air lock valve, close the bypass valve, and the air duct filter blowdown valve at a specific time interval , the self-cleaning pipeline in the box is opened.

In this optional embodiment, a logic diagram of a control method for a conveyor belt cleaning device is also provided. FIG. 3 is a logic diagram of an optional conveyor belt cleaning control method according to an embodiment of the present invention. As shown in FIG. 3 , FIG. The logic diagram shown in 3 can be divided into two processes of detection and cleaning, including the following:

(1) Detection after startup

1) The conveyor belt cleaning device first receives the start command to start the cleaning of the conveyor belt, and then detects the position of the cleaning box to check whether the cleaning box is in the lowered position, that is, whether the cleaning box is not raised. If the cleaning box has been raised or failed to fall to the preset position, the next step of detection will be performed after the cleaning box is lowered to the preset position.

2) Detect whether the conveyor belt is running or not, and check in a loop until it is detected that the conveyor belt is running, and then proceed to the next step of detection.

3) Detect whether the water supply can be normal. Since the conveyor belt needs to be flushed, it is necessary to detect that the water supply is normal before proceeding to the next step.

4) Detect the pressure difference of the filter and judge the clogging of the filter element. Water pressure sensors are respectively installed above and below the filter at the water supply end. Based on the water pressure data transmitted from the water pressure sensor to the system, the pressure difference data of the filter can be obtained, thereby Judging whether the filter is clogged according to the pressure difference data, when the water pressure data of the sensor above the filter is greater than that of the sensor below, it can be known that the filter is clogged, and a reminder to clean the filter element of the filter is issued.

5) Lift the cleaning box to a suitable conveyor belt cleaning position, and lock the cleaning box to prevent the cleaning box from shifting.

(2) Clean the conveyor belt

1) Turn on the water pump, fan, air lock valve, close the bypass valve (bypass drain valve), air duct filter drain valve, and at intervals of a specific time, open the self-cleaning pipeline in the box, first turn on the water pump to obtain water supply, and turn on the fan Extract the air in the cleaning box to a negative pressure state, close the bypass drain valve of the cleaning box and the drain valve of the air duct filter to prevent air leakage, and set the interval time, open the self-cleaning pipeline of the cleaning box, and clean the conveyor belt At the same time, the cleaning inside the cleaning box is realized.

2) Detect the full liquid level of the cleaning tank and give an alarm. If the liquid level in the cleaning tank is full, a reminder of the blockage of the rotary sealing valve will be issued, and the bypass sewage valve of the cleaning tank will be opened to discharge the sewage in time.

3) Detect the full liquid level of the air duct filter and alarm. If the air duct filter is full of liquid level, a reminder of water entering the air duct filter will be issued, and the air duct filter drain valve will be opened to discharge the sewage in time.

4) Check whether the belt has stopped running. If the belt (conveyor belt) has stopped running, open the blowdown valve of the air duct filter and bypass the blowdown valve of the cleaning box to discharge the residual sewage inside, and turn off the fan and water pump to stop pumping into the cleaning box. The air and water supply are stopped, and the rotary sealing valve is closed after a certain period of time to ensure that the air circulation of the cleaning box can get rid of the negative pressure and return to the normal state.

5) The cleaning box is lowered to the position, and the cleaning box is lowered to the initial position.

In the embodiment of the present invention, the detection result is obtained by detecting the position of the cleaning box and the negative pressure state of the space between the cleaning box and the return journey of the conveyor belt. Based on the detection result, the cleaning box is controlled to clean the return journey of the conveyor belt, and the conveyor belt The purpose of thorough cleaning on the return trip realizes the automatic determination of the cleaning state of the cleaning box, thereby controlling the cleaning box to clean the return trip of the conveyor belt more comprehensively and thoroughly, so as to improve the working efficiency of the return trip of the conveyor belt. The technical problem of incomplete cleaning of the return journey of the conveyor belt.

In the embodiment of the present invention, a control device for backhaul cleaning of the conveyor belt is also provided. FIG. 4 is a schematic diagram of a control device for backhaul cleaning of the conveyor belt provided according to an embodiment of the present invention. As shown in FIG. 4 , the device includes: a first detection The module 40, the second detection module 42, and the control module 44 will be described below.

The first detection module 40 is used to detect whether the cleaning box has risen to the predetermined cleaning position to obtain the first detection result; the second detection module 42 is connected to the above-mentioned first detection module 40, and is used for when the first detection result is yes Next, detect whether the space between the cleaning box and the return journey of the conveyor belt forms a flow negative pressure relative to the outside of the cleaning box, and obtain the second detection result; the control module 44 is connected to the above-mentioned second detection module 42, for when the second detection result is In the case of yes, control the cleaning box to clean the return journey of the conveyor belt under the flowing negative pressure.

In an embodiment of the present invention, a computer-readable storage medium is also provided. The computer-readable storage medium includes a stored program, wherein, when the program is running, the device where the computer-readable storage medium is located is controlled to execute any one of the above conveyor belt return journeys. Control methods for cleaning.

In an embodiment of the present invention, a computer device is also provided, including: a memory and a processor, the memory stores a computer program; the processor is used to execute the computer program stored in the memory, and when the computer program runs, the processor executes the above-mentioned A control method for return cleaning of any one of the conveyor belts.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

In the above-mentioned embodiments of the present invention, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed technical content can be realized in other ways. Wherein, the device embodiments described above are only illustrative. For example, the division of the units may be a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or may be Integrate into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of units or modules may be in electrical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage media include: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes. .

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (15)

1. A control method for conveyor belt backhaul cleaning, characterized in that it comprises: Detect whether the cleaning box has risen to the predetermined cleaning position, and obtain the first detection result; If the first detection result is yes, it is detected whether a flow negative pressure is formed in the space between the cleaning box and the return journey of the conveyor belt relative to the outside of the cleaning box, and a second detection result is obtained; If the second detection result is yes, the cleaning box is controlled to clean the return journey of the conveyor belt under the flow negative pressure. 2. The method according to claim 1, characterized in that, if the first detection result is yes, it is detected whether the space between the cleaning box and the return journey of the conveyor belt forms a negative flow relative to the outside of the cleaning box. Press to get the second detection result, including: In the case where the first detection result is yes, it is detected whether the conveyor belt is in a running state, and whether the high-pressure water pump that provides high-pressure water for the high-pressure water pipe in the cleaning box is supplied with water; When the detection result is that the conveyor belt is in a running state and the high-pressure water pump is supplying water, it is detected whether the space between the cleaning box and the return journey of the conveyor belt forms a flow negative pressure relative to the outside of the cleaning box, and the obtained The second detection result. 3. The method according to claim 2, wherein when the detection result includes the state that the high-pressure water pump has water supply, the method further comprises: Detecting whether the filter element of the clean water filter is in a blocked state, wherein the clean water filter is used to filter the water before being transported to the high-pressure water pump. 4. The method according to claim 3, wherein the detection of whether the filter core of the clean water filter is in a blocked state comprises: Obtain the first water pressure before passing through the clean water filter, and the second water pressure after passing through the clean water filter; obtaining a water pressure difference between the first water pressure and the second water pressure; Based on the water pressure difference, it is determined whether the filter element of the clean water filter is in a blocked state. 5. The method according to claim 1, wherein the controlling the cleaning box to clean the return journey of the conveyor belt under the flow negative pressure comprises: Open the high-pressure water pipe connected to the cleaning box to flush the return journey of the conveyor belt; Control the scraper in the cleaning box to scrape off the material on the return journey of the conveyor belt after washing; Open the suction pipe connected in the cleaning box to suck the space between the cleaning box and the return journey of the conveyor belt, and air-dry the return journey of the conveyor belt after the scraping operation. 6. The method according to claim 5, characterized in that, after the opening of the high-pressure water pipe connected to the cleaning box to flush the return journey of the conveyor belt, further comprising: A frequency conversion motor is used to drive the high-pressure water pump connected to the high-pressure water pipe, and the water pressure in the high-pressure water pipe is adjusted by adjusting the rotation speed of the high-pressure water pump. 7. The method according to claim 5, wherein the controlling the cleaning box to clean the return journey of the conveyor belt under the flow negative pressure further comprises: Open the air lock valve in the cleaning box, and discharge the collected sewage in the cleaning box through the main sewage outlet; Close the bypass drain valve in the cleaning box, wherein, when the bypass drain valve is opened, it is used to discharge the sewage collected in the cleaning box from the return journey of the conveyor belt; Close the blowdown valve of the air duct filter, wherein, when the blowdown valve of the air duct filter is opened, it is used to discharge the sewage in the air duct filter, and the air duct filter is used to clean the air in the air sucked from the cleaning box. Filter out the sewage. 8. The method according to claim 7, further comprising: Detecting whether the liquid level sensed by the cleaning tank liquid level sensor in the cleaning tank exceeds the first liquid level threshold, and the detection result is that the liquid level sensed by the cleaning tank liquid level sensor in the cleaning tank exceeds the first liquid level threshold. In the case of a liquid level threshold, a first warning message is issued, wherein the first warning message is used to prompt that the bypass drain valve in the cleaning box needs to be opened to discharge the sewage in the cleaning box; Detecting whether the liquid level sensed by the air duct filter liquid level sensor in the air duct filter exceeds the second liquid level threshold, and the detection result is that the air duct filter liquid level sensor in the air duct filter senses When the liquid level exceeds the second liquid level threshold, a second warning message is issued, wherein the second warning message is used to prompt that the air duct filter blowdown valve on the air duct filter needs to be opened to Drain the sewage in the air duct filter. 9. The method according to claim 5, wherein the controlling the cleaning box to clean the return journey of the conveyor belt under the flow negative pressure further comprises: When the outlet of the centrifugal fan connected to the suction pipe is provided with an exhaust valve, the exhaust volume of the centrifugal fan is controlled by controlling the opening of the exhaust valve. 10. The method according to claim 5, further comprising: Detect whether the conveyor belt is stopped; When the detection result is that the conveyor belt stops running, close the high-pressure water pump that provides high-pressure water for the high-pressure water pipe, stop the high-pressure water pipe to flush the conveyor belt return; close the cleaning box and the conveyor belt return The centrifugal fan that sucks the space between them stops sucking the space; the scraper is controlled to stop scraping off the materials on the return journey of the conveyor belt after washing. 11. The method according to claim 10, wherein when the detection result is that the conveyor belt stops running, the method further comprises: Open the bypass drain valve in the cleaning box to discharge the sewage collected in the cleaning box from the return journey of the conveyor belt; Open the blowdown valve of the air duct filter to discharge the sewage filtered out from the wind sucked in the cleaning box in the air duct filter; Control the air lock valve in the cleaning box to continue running for a predetermined time, so that the sewage in the cleaning box can be drained smoothly. 12. The method according to claim 10, wherein when the detection result is that the conveyor belt stops running, the method further comprises: Controlling the cleaning box to drop to a predetermined placement position. 13. A control device for return cleaning of a conveyor belt, characterized in that it comprises: The first detection module is used to detect whether the cleaning box has risen to the predetermined cleaning position, and obtain the first detection result; The second detection module is configured to detect whether a flow negative pressure is formed in the space between the cleaning box and the return journey of the conveyor belt relative to the outside of the cleaning box when the first detection result is yes, and obtain a second detection result ; A control module, configured to control the cleaning box to clean the return journey of the conveyor belt under the flow negative pressure when the second detection result is yes. 14. A computer-readable storage medium, characterized in that the computer-readable storage medium includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute claims 1 to 12 The control method for the return cleaning of the conveyor belt described in any one of the above. 15. A computer device, comprising: a memory and a processor, the memory stores a computer program; The processor is configured to execute the computer program stored in the memory, and when the computer program runs, the processor executes the control method for return cleaning of the conveyor belt according to any one of claims 1 to 12.