WO2024067654A1 - Suction nozzle-free non-contact high-pressure steam column cleaning and lifting device and method, and street sweeper - Google Patents

Abstract

A suction nozzle-free non-contact high-pressure steam column cleaning and lifting device and method, and a street sweeper. The high-pressure steam column cleaning and lifting device comprises: a spray nozzle (100-1), a reverse air curtain nozzle (110), a shovel tongue plate (301), a compressed air pipe (101), a high-pressure air generation device, and a water inlet pipe (102); the high-pressure air generation device generates high-pressure air and delivers the high-pressure air to the spray nozzle (100-1) and the reverse air curtain nozzle (110); the water inlet pipe (102) is communicated with the spray nozzle (100-1) and the reverse air curtain nozzle (110); the spray nozzle (100-1) sprays a high-pressure high-speed steam column towards an obtuse angle between the shovel tongue plate (301) and the ground; the reverse air curtain nozzle (110) sprays a high-pressure high-speed steam column towards an acute angle between the shovel tongue plate (301) and the ground; the two high-pressure high-speed steam columns press against each other at the gap between the shovel tongue plate (301) and the ground, so that the high-pressure high-speed steam columns drive garbage on the ground to climb along the slope of the shovel tongue plate (301), thereby completing garbage cleaning and lifting operation. The high-pressure steam column cleaning and lifting device and the street sweeper have the characteristics of high cleaning and lifting efficiency, low energy consumption and higher cleaning speed.

Description

A suction nozzle-free, contact-free high-pressure steam column cleaning and lifting device and method and a road sweeper Technical Field

The invention belongs to the technical field of cleaning, and in particular is a suction nozzle-free and contactless high-pressure steam column cleaning and lifting device and method, and a road sweeper.

Background technique

In the inventor's more than 10 years of work experience in sanitation equipment, many shortcomings of high-power suction nozzle type road sweepers have been found. Generally, suction nozzle type road sweepers are equipped with powerful fans, which need to be driven by powerful auxiliary engines or electric motors. The power of the auxiliary engine of a typical road sweeper reaches 115KW, plus the rated power of another engine of the chassis also exceeds 100KW. The power required by the road sweeper's exhaust system is equivalent to the power required for the 5-16 ton chassis to travel. In order to sweep and suck up garbage weighing less than 1KG, it is necessary to drive a 5-16 ton chassis, which is a typical rough energy consumption method. Moreover, the exhaust volume of such a high-power exhaust structure is quite large. Although there is a dust removal device, the large-flow exhaust still contains tiny dust, which brings secondary pollution, and the risk of The smoke can be clearly seen from the exhaust port on the roof of the road sweeper; on the other hand, in order to maintain an accurate distance of 5-10mm from the ground to achieve suction efficiency, a nozzle support wheel in contact with the ground is installed to support and maintain the distance. Too fast a speed may throw the suction cup into the air, which limits the cleaning speed of the road sweeper; currently, road sweepers are developing in the direction of new energy, and energy consumption is an important factor affecting endurance. This high-power exhaust nozzle cleaning device cannot meet the energy-saving requirements of new energy road sweepers at this stage; therefore, the existing ordinary exhaust nozzle type road sweepers have the disadvantages of high rated power, heavy weight, high energy consumption, short endurance, high noise, secondary dust pollution, limited speed, high manufacturing cost, etc., which need to be improved urgently. A cleaning and lifting device with lower energy consumption, lighter weight and faster speed is urgently needed to replace the existing rough high-power exhaust nozzle type cleaning device.

Summary of the invention

The present invention provides a nozzle-free, non-contact, high-pressure steam column cleaning and lifting device, which at least solves one of the technical problems existing in the prior art, such as high rated power, high energy consumption, secondary dust pollution, high noise, heavy weight, and limited speed. To this end, the present invention proposes a nozzle-free, non-contact, high-pressure steam column cleaning and lifting device, which is energy-saving and environmentally friendly, and has the advantages of low rated power, low energy consumption, simple structure, light weight, low noise, faster non-contact speed, reduced manufacturing cost, and high cleaning efficiency.

According to one aspect of the present invention, a nozzle-free and contactless high-pressure steam column cleaning and lifting device is provided, comprising: a spray cleaning nozzle, a reverse air curtain nozzle, a shovel tongue plate, a compressed air pipe, and a high-pressure air generating device.

The spray nozzle also includes a nozzle and a nozzle. The nozzle is connected to one end of the nozzle, the other end of the nozzle is connected to one end of the compressed air pipe, and the other end of the compressed air pipe is connected to the high-pressure air generating device.

The reverse air curtain nozzle also includes a nozzle and a nozzle, wherein the nozzle is connected to one end of the nozzle, the other end of the nozzle is connected to one end of the compressed air pipe, and the other end of the compressed air pipe is connected to the high-pressure air generating device.

The front end of the tongue shovel plate hangs down close to the ground and leaves a gap with the ground, and the rear end of the tongue shovel plate tilts up, and the tongue shovel plate forms a non-vertical slope angle with the ground;

The spray nozzle is located at an obtuse angle between the shovel blade and the ground, the spray direction of the spray nozzle forms a non-vertical angle with the ground, and the spray direction of the spray nozzle is inclined toward the ground and the shovel blade.

The reverse air curtain nozzle is located at the acute angle between the shovel blade and the ground, and the spraying direction of the reverse air curtain nozzle is toward the gap between the front end of the shovel blade and the ground.

Furthermore, the shape of the ejection hole of the nozzle is a circular hole or a duckbill narrow slit, the diameter of the circular hole is between 0.5 mm and 4 mm, and the width of the duckbill narrow slit is between 0.4 mm and 3 mm.

Furthermore, the high-pressure air generating device includes at least one of the following devices: an air compressor, a high-pressure blower, a high-pressure fan, a high-speed fan or a high-speed motor; and is also characterized in that the high-pressure air pressure generated by the high-pressure air generating device is between 0.3MPa and 2.8MPa.

Furthermore, the lifting method of the nozzle-free and contactless high-pressure steam column cleaning and lifting device is as follows:

The proximal position of the airflow ejected from the spray nozzle is set to H1 and the impact pressure of the airflow ejected from the spray nozzle at this position is H1P, and the distal position of the airflow ejected from the spray nozzle is set to H2 and the impact pressure of the airflow ejected from the spray nozzle at this position is H2P.

The proximal position of the airflow ejected from the reverse air curtain nozzle is set to R1 and the impact pressure of the airflow ejected from the reverse air curtain nozzle at this position is R1P, and R1 is located at the gap between the front end of the shovel tongue plate and the ground, and the distal position of the airflow ejected from the reverse air curtain nozzle is set to R2 and the impact pressure of the airflow ejected from the reverse air curtain nozzle at this position is R2P.

The spray pressures of the spray nozzle and the reverse air curtain nozzle are adjusted and controlled so that H2P>R2P and H2P<R1P.

The high-pressure, high-speed airflow generated by the sweeping nozzle flows from H1 to H2. Since H2P>R2P, the high-pressure, high-speed airflow passes over R2 and continues to move forward. Since H2P<R1P, the high-pressure, high-speed airflow encounters an obstacle at R1 and cannot enter the air between the shovel blade and the ground. Under the blocking effect of the ground, the high-pressure, high-speed airflow is forced to continue to rise along the slope of the shovel blade. The ground garbage is also lifted from the ground by the high-pressure, high-speed airflow and moves upward along the slope of the shovel blade, completing the collection and lifting operation of the ground garbage.

Furthermore, the nozzle-free and contactless high-pressure steam column cleaning and lifting device further comprises a water tank, a water inlet pipe, and a flow regulating valve, wherein the water inlet end of the water inlet pipe is connected to the water tank, the water outlet end of the water inlet pipe is connected to the pipe wall of the nozzle and forms a three-way structure, and the flow regulating valve is arranged on the water inlet pipe;

The flow regulating valve is used to control the water content of the steam column sprayed from the spray nozzle to achieve the best water saving, dust suppression and cleaning effects.

Furthermore, the suction nozzle-free and contactless high-pressure steam column cleaning and lifting device also includes a shovel platform, the front end of the shovel platform is connected to the rear end of the shovel tongue plate, and the front part of the shovel platform is higher than the rear part of the shovel platform; when the garbage is lifted along the slope of the shovel tongue plate and reaches the shovel platform, further garbage transportation is carried out.

Furthermore, the suction-free and non-contact high-pressure steam column cleaning and lifting device further includes a plurality of spray nozzles, wherein the first spray nozzle is arranged at the obtuse angle between the shovel tongue plate and the ground, and the spray direction of the first spray nozzle is inclined toward the ground and the shovel tongue plate, and the third spray nozzle is arranged obliquely above the first spray nozzle, and the third spray nozzle is arranged in an array along the upward slope of the shovel tongue plate, and the spray direction of the third spray nozzle is simultaneously inclined toward the shovel tongue plate and the upward slope of the shovel tongue plate. The fourth spray nozzle is arranged above the shovel platform, and the spray direction of the fourth spray nozzle is simultaneously inclined toward the shovel platform and the rear of the shovel platform.

The third spray nozzle lifts the garbage lifted by the first spray nozzle and the reverse air curtain nozzle further upward along the slope of the shovel tongue plate to a higher position and reaches the shovel platform, and the fourth spray nozzle above the shovel platform further transports the garbage to the rear of the shovel platform.

Furthermore, the suction nozzle-free and contactless high-pressure steam column cleaning and lifting device also includes a pressure regulating valve, which is arranged on the compressed air pipe. The pressure regulating valve on the compressed air pipe connected to the spray nozzle is used to adjust the pressure and flow rate of the airflow sprayed from the spray nozzle, and the pressure regulating valve on the compressed air pipe connected to the reverse air curtain nozzle is used to adjust the pressure and flow rate of the airflow sprayed from the reverse air curtain nozzle.

Furthermore, the suction nozzle-free and contact-free high-pressure steam column cleaning and lifting device further includes a shovel cover, a shovel throat, and a hose;

The shovel cover is located above the shovel platform, and the two sides of the shovel cover are drooping and connected to the two sides of the shovel platform. The shovel cover and the shovel platform form a shovel chamber. The front of the shovel chamber is open, and the rear of the shovel chamber is open to form the shovel throat. The front opening of the shovel chamber is larger than the rear opening of the shovel chamber, and the rear cross-section of the shovel chamber is gradually smaller than the front cross-section. The shovel throat is connected to one end of the hose.

Furthermore, the diameter of the hose is between 2 cm and 8 cm. Since the garbage has been lifted to the shovel platform, the next step of transporting it to the garbage bin of the road sweeper does not require high power. The diameter of the exhaust hose of an ordinary suction-sweeping road sweeper is 16-18 cm or the cross-sectional area is between 803-1018 square centimeters. The suction nozzle-free and non-contact high-pressure steam column cleaning and lifting device of the present invention only requires a hose with a diameter of 2-8 cm or a cross-sectional area of 3-50 square centimeters. The cross-sectional area of the hose of the present invention is only less than 5% of the cross-sectional area of the hose of a traditional road sweeper. Therefore, the power required by the exhaust fan system of the present invention is also less than 5% of that of a traditional suction-sweeping road sweeper, which has a significant energy-saving effect.

The garbage lifting process of the nozzle-free and contact-free high-pressure steam column cleaning and lifting device is as follows:

The first sweeping nozzle + reverse air curtain nozzle + shovel tongue plate---garbage is lifted along the slope of the shovel tongue plate---the third sweeping nozzle---garbage reaches the shovel platform---the fourth sweeping nozzle---garbage reaches the shovel throat---low-power exhaust system---garbage reaches the garbage bin.

The present invention has the following effects:

The suction-free and contactless high-pressure steam column cleaning and lifting device of the present invention is specially designed through a spray nozzle, a reverse air curtain nozzle, a shovel tongue plate, a high-pressure air generating device, etc. The high-pressure air generating device generates high-pressure air which reaches the nozzle and the nozzle through the compressed air pipe. When the compressed air passes through the nozzle at a high speed, a siphon effect is formed at the tee formed by the nozzle and the water inlet pipe to suck the water in the water inlet pipe into the nozzle to form a mixture of high-speed air and water and spray it out at a high speed at the nozzle. Due to the friction between air and water, the water becomes a very uniform and extremely fine water mist to form a uniform mixed steam with the high-pressure and high-speed air. Since the aperture or gap of the nozzle is small, the mixed steam forms a small but powerful high-pressure and high-speed steam column which is sprayed from the nozzle. The garbage is pushed to move in a designated cleaning direction by the high-pressure and high-speed steam column. The high-pressure and high-speed steam column directly mixes with the dust to effectively suppress dust and reduce secondary dust pollution. The spray nozzle sprays high-pressure and high-speed steam in the direction of the obtuse angle between the shovel tongue plate and the ground. The steam column and the reverse air curtain nozzle spray high-pressure and high-speed steam column toward the acute angle between the shovel tongue plate and the ground. The two high-pressure and high-speed steam columns squeeze each other at the gap between the shovel tongue plate and the ground. The pressure of the air column sprayed by the spray nozzle is greater than the pressure of the air column sprayed by the reverse air curtain nozzle. The two high-pressure and high-speed steam columns work together to move in the upward direction of the slope of the shovel tongue plate, so that the high-pressure and high-speed steam column drives the garbage on the ground to climb upward along the slope of the shovel tongue plate to complete the garbage cleaning and lifting operation. Due to the small but powerful characteristics of the high-pressure and high-speed steam column, although the high-pressure and high-speed steam column has great force, the actual wind flow rate is small, so the required rated power is small. The device of the present invention pushes the garbage on the ground through the high-pressure and high-speed steam column, and has no contact parts with the ground, so that fast cleaning can be achieved. Compared with the traditional high-power exhaust fan nozzle device, the suction-free and non-contact high-pressure steam column cleaning and lifting device of the present invention has the advantages of small rated power, low energy consumption, high cleaning efficiency, unlimited non-contact cleaning speed, small secondary dust pollution, etc., and is of great promotion value.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

FIG1 is a cross-sectional view and a lifting schematic diagram of a nozzle-free and contactless high-pressure steam column cleaning and lifting device according to the present invention.

2 is a cross-sectional view and a schematic diagram of a shovel platform of the suction nozzle-free and contactless high-pressure steam column cleaning and lifting device of the present invention.

FIG. 3 is a schematic diagram showing that the nozzle of the present invention is in the shape of a duckbill narrow slit.

FIG. 4 is a schematic diagram of a small mini road sweeper according to an embodiment of the present invention.

FIG. 5 is a schematic diagram showing that the nozzle of the present invention is in the shape of a circular hole.

FIG. 6 is a top view of a schematic diagram of a medium-sized road sweeper according to an embodiment of the present invention.

FIG. 7 is a cross-sectional view of a schematic diagram of a medium-sized road sweeper according to an embodiment of the present invention.

Description of Reference Numerals

100-1, spray nozzle/first spray nozzle;

100-2, Second spray nozzle

100-3, the third spray nozzle;

100-4, the fourth spray nozzle

101. Compressed air pipe;

102. Water inlet pipe;

104. Nozzle;

105. Nozzle;

110. Reverse air curtain nozzle;

201, shovel cover;

202, shovel room;

301, tongue shovel;

302, shovel platform;

303, shovel throat;

306. Garbage storage box;

307. Slightly negative pressure exhaust port;

400, fine particle bin;

401. Air outlet of fine dustbin;

402. Hose.

Implementation

The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

As shown in Figure 1 or Figure 2 or Figure 3 or Figure 5, a preferred embodiment of the present invention provides a nozzle-free and contact-free high-pressure steam column cleaning and lifting device, including: a spray nozzle 100-1, a reverse air curtain nozzle 110, a shovel tongue plate 301, a compressed air pipe 101, and a high-pressure air generating device.

The spray nozzle also includes a nozzle 105 and a nozzle 104. The nozzle 104 is connected to one end of the nozzle 105. The other end of the nozzle 105 is connected to one end of the compressed air pipe 101. The other end of the compressed air pipe 101 is connected to the high-pressure air generating device.

The reverse air curtain nozzle 110 also includes a nozzle 105 and a nozzle 104. The nozzle 104 is connected to one end of the nozzle 105. The other end of the nozzle 105 is connected to one end of the compressed air pipe 101. The other end of the compressed air pipe 101 is connected to the high-pressure air generating device.

The front end of the tongue shovel plate 301 hangs down close to the ground and leaves a gap with the ground, and the rear end of the tongue shovel plate 301 is tilted upward, and the tongue shovel plate 301 forms a non-vertical slope angle with the ground.

The spray nozzle 100 - 1 is located at an obtuse angle between the shovel blade 301 and the ground. The spray direction of the spray nozzle 100 - 1 forms a non-vertical angle with the ground. The spray direction of the spray nozzle 100 - 1 is inclined toward the ground and the shovel blade 301 .

The reverse air curtain nozzle 110 is located at the acute angle between the shovel blade 301 and the ground, and the spraying direction of the reverse air curtain nozzle 110 is toward the gap between the front end of the shovel blade 301 and the ground.

Preferably, the lifting method of the nozzle-free and contactless high-pressure steam column cleaning and lifting device is as follows:

As shown in FIG1 , the proximal position of the airflow ejected from the spray nozzle 100 - 1 is set to H1 and the impact pressure of the airflow ejected from the spray nozzle 100 - 1 at that position is H1P, and the distal position of the airflow ejected from the spray nozzle 100 - 1 is set to H2 and the impact pressure of the airflow ejected from the spray nozzle 100 - 1 at that position is H2P.

The proximal position of the airflow ejected by the reverse air curtain nozzle 110 is set to R1 and the impact pressure of the airflow ejected by the reverse air curtain nozzle 110 at this position is R1P, and R1 is located at the gap between the front end of the shovel tongue plate 301 and the ground, and the distal position of the airflow ejected by the reverse air curtain nozzle 110 is set to R2 and the impact pressure of the airflow ejected by the reverse air curtain nozzle 110 at this position is R2P.

Adjust and control the spray pressure of the spray nozzle 100-1 and the reverse air curtain nozzle 110 so that H2P>R2P and H2P<R1P;

The airflow generated by the spray nozzle 100-1 flows from H1 to H2. Since H2P>R2P, the airflow continues to move over R2. Since H2P<R1P, the airflow encounters an obstacle at R1 and cannot enter the air between the shovel blade 301 and the ground. Under the obstruction of the ground, the airflow is forced to continue to rise along the slope of the shovel blade 301, and the ground garbage is also lifted from the ground by the airflow and moves upward along the slope of the shovel blade 301.

It is understandable that most of the existing road sweepers are equipped with powerful fans, and use powerful auxiliary engines to drive the exhaust fan and suction nozzle structure to sweep and lift the garbage on the ground into the garbage bin. The power of the auxiliary engine of a typical model of a certain brand of road sweeper reaches 115KW. The manufacturing cost, weight, working energy consumption, etc. of the whole road sweeper are too large, and the exhaust flow of such a high-power exhaust system is large, which is easy to cause serious secondary dust pollution.

The suction nozzle-free and contact-free high-pressure steam column cleaning and lifting device of the present embodiment uses a structure for cleaning and lifting garbage by using a high-pressure and high-speed airflow that flows according to specific rules through special design structures such as the spray nozzle 100-1, the reverse air curtain nozzle 110, the shovel tongue plate 301, etc. It can achieve the purpose of collecting and lifting garbage without the need for a high-power exhaust fan, has a simple structure, low energy consumption and can achieve better cleaning effects.

Preferably, as shown in Figures 1 and 2, the nozzle-free and contactless high-pressure steam column cleaning and lifting device also includes a water tank, a water inlet pipe 102, and a flow regulating valve. The water inlet end of the water inlet pipe 102 is connected to the water tank, and the water outlet end of the water inlet pipe 102 is connected to the pipe wall of the nozzle 105 to form a three-way structure. The flow regulating valve is arranged on the water inlet pipe 102.

The high-speed airflow in the nozzle 105 generates a siphon effect negative pressure, which sucks in the water in the water inlet pipe 102, so that the airflow sprayed from the spray nozzle 100-1 and the reverse air curtain nozzle 110 contains extremely fine water droplets. The water-containing high-pressure and high-speed airflow can achieve the effect of dust suppression while cleaning. Compared with the secondary water spray dust suppression method, it has the advantages of more uniform mixing, finer water droplets and better dust suppression effect. At the same time, the flow regulating valve on the water inlet pipe 102 can control the water content of the airflow sprayed from the spray nozzle 100-1 to achieve the best water-saving and dust suppression effects.

Preferably, as shown in Figure 2 or Figure 7, the suction nozzle-free and contactless high-pressure steam column cleaning and lifting device also includes a shovel platform 302, the front end of the shovel platform 302 is connected to the rear end of the shovel tongue plate 301, and the front part of the shovel platform 302 is higher than the rear part of the shovel platform; when the garbage is lifted along the slope of the shovel tongue plate 301 to reach the shovel platform 302, further garbage transportation is carried out.

As preferred, as shown in FIG. 2 or FIG. 7 , the suction-free non-contact high-pressure steam column cleaning and lifting device further includes a plurality of spray nozzles 100-1, wherein the first spray nozzle 100-1 is arranged at the obtuse angle between the shovel tongue plate 301 and the ground, and the spray direction of the first spray nozzle 100-1 is inclined toward the ground and the shovel tongue plate 301, and the third spray nozzle 100-3 is arranged obliquely above the first spray nozzle 100-1, and the third spray nozzle 100-1 is arranged in an array along the upward slope of the shovel tongue plate 301, and the spray direction of the third spray nozzle 100-3 is inclined toward the shovel tongue plate 301 and the upward slope of the shovel tongue plate 301. The fourth spray nozzle 100-4 is placed above the shovel platform, and the spray direction of the fourth spray nozzle is inclined toward the shovel platform and the rear of the shovel platform at the same time.

The third spray nozzle 100-3 further lifts the garbage lifted by the first spray nozzle 100-1 upward along the slope of the shovel tongue plate 301 to a higher position and reaches the shovel platform 302. The fourth spray nozzle 100-4 above the shovel platform 302 further transports the garbage to the rear of the shovel platform 302.

Preferably, as shown in Figures 1 and 2, the suction nozzle-free and contact-free high-pressure steam column cleaning and lifting device also includes a shovel platform 302, the front end of the shovel platform 302 is connected to the rear end of the shovel tongue plate 301, and the front part of the shovel platform 302 is higher than the rear part of the shovel platform 302, so that the garbage or liquid reaching the shovel platform 302 can be more conveniently moved backward due to gravity.

After the garbage is lifted along the slope of the shovel blade 301 , the garbage reaches the shovel platform 302 so that the garbage can be further transported by a subsequent garbage conveying device.

As a preferred embodiment, the suction nozzle-free and contactless high-pressure steam column cleaning and lifting device further includes a shovel cover 201, a shovel throat 303, and a hose 402;

The shovel cover 201 is located above the shovel platform, and both sides of the shovel cover 201 are drooping and connected to both sides of the shovel platform 302. The shovel cover 201 and the shovel platform 302 form a shovel chamber 202. The front of the shovel chamber 202 is open, and the rear of the shovel chamber 202 is open and forms the shovel throat 303. The front opening of the shovel chamber 202 is larger than the rear opening of the shovel chamber 202. The cross-sectional area at the rear of the shovel chamber 202 is gradually smaller than the cross-sectional area at the front. The shovel throat 303 is connected to one end of the hose 402.

Preferably, the diameter of the hose 402 is between 2 cm and 8 cm. Since the garbage has been lifted to the shovel platform 302, no high power is required for further transportation. The diameter of the exhaust hose of an ordinary suction-sweeping road sweeper is 16-18 cm or the cross-sectional area is between 803-1018 square centimeters. The suction nozzle-free and non-contact high-pressure steam column cleaning and lifting device of the present invention only requires a hose with a diameter of 2-8 cm or a cross-sectional area of 3-50 square centimeters. The cross-sectional area of the hose of the present invention is only less than 5% of the cross-sectional area of the hose of a traditional road sweeper. Therefore, the power required by the exhaust fan system of the present invention is also less than 5% of that of a traditional suction-sweeping road sweeper, which has a significant energy-saving effect.

Preferably, the high-pressure air generating device comprises at least one of the following devices: an air compressor, a high-pressure blower, a high-pressure fan, a high-speed fan or a high-speed motor; the high-pressure air generated by the high-pressure air generating device has a pressure between 0.3MPa and 2.8MPa; the high-pressure air can generate a high-pressure and high-speed airflow, and a narrow airflow can be used to achieve

Optionally, the shape of the ejection hole of the nozzle 104 is a circular hole as shown in FIG5 , and the diameter of the circular hole is between 0.5 mm and 4 mm;

Optionally, the shape of the spray hole of the nozzle 104 is a duckbill narrow slit shape, as shown in FIG3 , and the slit width of the duckbill narrow slit is between 0.4 mm and 3 mm.

The high-pressure and high-speed airflow passes through the tiny circular hole of the nozzle 104 or the narrow duckbill slit of the nozzle 104, generating a strong and narrow air column, producing the same cleaning effect as a physical sweeping brush, but with less noise and lower energy consumption.

Preferably, the suction-free and contactless high-pressure steam column cleaning and lifting device also includes a pressure regulating valve, which is arranged on the compressed air pipe; the pressure regulating valve adjusts the pressure of the spray air flow of the spray nozzle 100-1 and the reverse air curtain nozzle 110 to adapt to the needs of different working conditions with different amounts of garbage on the road and different operating speeds.

In some embodiments, the suction nozzle-free and non-contact high-pressure steam column cleaning and lifting device replaces the exhaust nozzle device. When the garbage is lifted to the shovel platform 302, the initial lifting operation of the garbage is completed and it is further lifted to the garbage bin in the next process, and further lifted to the garbage bin through other common lifting mechanisms to complete the garbage cleaning, lifting and storage process.

In some embodiments, the spray nozzles 100 - 1 are arranged in two or more arrays to meet the cleaning and lifting needs of a wider or larger area.

In some embodiments, the reverse air curtain nozzles 110 are arranged in two or more arrays to meet the cleaning and lifting needs of a wider or larger area.

In some embodiments, a plurality of spray nozzles 100 - 1 are arranged in an array to meet the need of lifting the garbage higher and transporting it farther, as shown in FIG. 2 , which shows the arrangement of the third spray nozzle 100 - 3 and the fourth spray nozzle 100 - 4 .

In some embodiments, as shown in FIG. 7 , the second spray nozzle 100 - 2 is disposed on the side of the road sweeper for side sweeping.

In some embodiments, as shown in FIG. 2 or FIG. 7 , a fourth spray nozzle 100 - 4 is further included. The fourth spray nozzle 100 - 4 further transports the garbage that has been lifted to the shovel platform 302 to the rear of the shovel platform 302 .

In some embodiments, the tongue-shoveling plate 301 and the reverse air curtain nozzle 110 are connected, the nozzle 104 of the reverse air curtain nozzle 110 is in the shape of a duckbill slit, one side of the duckbill slit nozzle is a part of the tongue-shoveling plate 301, and the nozzle 104 of the reverse air curtain nozzle 110 and the tongue-shoveling plate 301 are combined to form a component. Such a design is more compact, reduces the number of components, and can reduce manufacturing costs.

In some embodiments, as shown in FIG. 4 , the present invention is used for a small mini road sweeper, the front and rear dimensions of the shovel platform 302 are relatively short, and immediately behind the shovel platform 302 is a basin-shaped garbage storage box 307, the shovel cover 201 of the small secret road sweeper covers the entire vehicle body to form a vehicle shell, and the garbage is lifted along the slope of the shovel tongue plate 301 to the shovel platform 302 by the suction nozzle-free and non-contact high-pressure steam column cleaning and lifting device of the present invention and immediately enters the garbage storage box 307 to complete the work of cleaning, collecting and storing garbage. A micro-negative pressure exhaust port 308 is provided above the garbage storage box 307 to keep the garbage storage box in a micro-negative pressure state to avoid overflow of fine garbage.

In some embodiments, as shown in FIG. 6 or FIG. 7 , the present invention is used for a medium-sized road sweeper, comprising: a first spray nozzle 100-1, a second spray nozzle 100-2, a third spray nozzle 100-3, a fourth spray nozzle 100-4, a reverse air curtain nozzle 110, a high-pressure air generating device, a compressed air pipe 101, a water inlet pipe 102, a shovel tongue plate 301, a shovel platform 302, a shovel throat 303, a shovel chamber 202, a shovel cover 201, a hose 402, a fine-grained garbage bin 400, and a fine-grained garbage bin exhaust port 401; the fine-grained garbage bin exhaust port 401 is provided with a low-power exhaust system;

Preferably, the second sweep nozzle 100-2 is arranged on the side of the sweeper and in front of the shovel chamber 202. The second sweep nozzle 100-2 performs the function of side sweeping, concentrating the garbage on both sides of the sweeper to the center of the sweeper, and gathering the garbage to the shovel tongue plate 301. The first sweep nozzle 100-1, the reverse air curtain nozzle 110 and the shovel tongue plate 301 work together to lift the garbage to the slope of the shovel tongue plate 301, and further lift it to the shovel platform 302 under the action of the third sweep nozzle 100-3, and further under the action of the fourth sweep nozzle 100-4, the garbage moves to the shovel throat 303. The garbage reaching the shovel throat 303 reaches the fine-grained garbage bin 400 through the hose 402 under the action of the exhaust system of the fine-grained garbage bin 400, completing the cleaning, lifting and storage process of the fine-grained garbage.

The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention shall be covered by the protection scope of the present invention.

In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "rear", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the description or drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

In the description of the present invention, the "acute angle" refers to the angle between the spray direction of the spray nozzle and the flat ground.

In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the term "connected" means that two or more parts are connected together and the internal spaces are connected. The two or more parts can be two or more independent parts connected together, or they can be an integral part composed of two or more geometric structures.

After reading the above technical solution, ordinary technicians can obviously understand that applying this solution to the technical solution of one or more functional parts also falls within the protection scope of the present invention.

In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, different combinations and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims (10)

A nozzle-free, contact-free high-pressure steam column cleaning and lifting device, characterized in that it comprises: a spray nozzle, a reverse air curtain nozzle, a tongue shovel plate, a compressed air pipe, and a high-pressure air generating device; The feature is that the spray nozzle further comprises a nozzle pipe and a nozzle head, wherein the nozzle head is connected to one end of the nozzle pipe, the other end of the nozzle pipe is connected to one end of the compressed air pipe, and the other end of the compressed air pipe is connected to the high-pressure air generating device; It is also characterized in that the reverse air curtain nozzle further comprises a nozzle and a nozzle, the nozzle is connected to one end of the nozzle, the other end of the nozzle is connected to one end of the compressed air pipe, and the other end of the compressed air pipe is connected to the high-pressure air generating device; The invention is also characterized in that the front end of the tongue shovel plate hangs down close to the ground and leaves a gap with the ground, and the rear end of the tongue shovel plate tilts up, and the tongue shovel plate forms a non-vertical slope angle with the ground; The feature is that the spray nozzle is located at an obtuse angle between the shovel blade and the ground, the spray direction of the spray nozzle forms a non-vertical angle with the ground, and the spray direction of the spray nozzle is inclined toward the ground and the shovel blade; Its feature is that the reverse air curtain nozzle is located at the acute angle between the shovel blade and the ground, and the spraying direction of the reverse air curtain nozzle is toward the gap between the front end of the shovel blade and the ground. According to claim 1, the nozzle-free and contactless high-pressure steam column cleaning and lifting device is characterized in that the lifting method is as follows: The proximal position of the airflow ejected from the spray nozzle is set to H1 and the impact pressure of the airflow ejected from the spray nozzle at this position is H1P, and the distal position of the airflow ejected from the spray nozzle is set to H2 and the impact pressure of the airflow ejected from the spray nozzle at this position is H2P; The proximal position of the airflow ejected from the reverse air curtain nozzle is set to R1 and the impact pressure of the airflow ejected from the reverse air curtain nozzle at this position is R1P, and R1 is located at the gap between the front end of the shovel tongue plate and the ground, and the distal position of the airflow ejected from the reverse air curtain nozzle is set to R2 and the impact pressure of the airflow ejected from the reverse air curtain nozzle at this position is R2P; The spray pressures of the spray nozzle and the reverse air curtain nozzle are adjusted and controlled so that H2P>R2P and H2P<R1P. The nozzle-free and contactless high-pressure steam column cleaning and lifting device according to claim 1 is also characterized in that it includes a water tank, a water inlet pipe, and a flow regulating valve, the water inlet end of the water inlet pipe is connected to the water tank, the water outlet end of the water inlet pipe is connected to the pipe wall of the nozzle to form a three-way structure, and the flow regulating valve is arranged on the water inlet pipe. The nozzle-free and contactless high-pressure steam column cleaning and lifting device according to claim 1 is also characterized in that it includes a shovel platform, the front end of the shovel platform is connected to the rear end of the shovel tongue plate, and the front part of the shovel platform is higher than the rear part of the shovel platform. The suction-free and contact-free high-pressure steam column cleaning and lifting device according to claim 1 is further characterized in that it comprises a plurality of the spray nozzles, the first spray nozzle is arranged at the obtuse angle between the shovel tongue plate and the ground, the spray direction of the first spray nozzle is inclined toward the ground and the shovel tongue plate, the third spray nozzle is arranged obliquely above the first spray nozzle, the third spray nozzle is arranged in an array along the upward slope of the shovel tongue plate, and the spray direction of the third spray nozzle is simultaneously inclined toward the shovel tongue plate and the upward slope of the shovel tongue plate. The fourth spray nozzle is arranged above the shovel platform, and the spray direction of the fourth spray nozzle is simultaneously inclined toward the shovel platform and the rear of the shovel platform. According to the nozzle-free and contactless high-pressure steam column cleaning and lifting device according to claim 1, it is also characterized in that the shape of the spray hole of the nozzle is a circular hole shape or a duckbill narrow slit shape, the aperture of the circular hole shape is between 0.5 mm and 4 mm, and the width of the duckbill narrow slit shape is between 0.4 mm and 3 mm. According to the nozzle-free and contactless high-pressure steam column cleaning and lifting device according to claim 1, the high-pressure air generating device includes at least one of the following devices: an air compressor, a high-pressure blower, a high-pressure fan, a high-speed fan or a high-speed motor; it is also characterized in that the high-pressure air pressure generated by the high-pressure air generating device is between 0.3MPa and 2.8MPa. The nozzle-free and contactless high-pressure steam column cleaning and lifting device according to claim 1 is also characterized in that it includes a pressure regulating valve, and the pressure regulating valve is arranged on the compressed air pipe. The nozzle-free and contactless high-pressure steam column cleaning and lifting device according to claim 1 is also characterized in that it includes a shovel cover, a shovel throat, and a hose; The shovel cover is located above the shovel platform, and the two sides of the shovel cover are drooped and connected to the two sides of the shovel platform. The shovel cover and the shovel platform form a shovel chamber, the front of the shovel chamber is open, the rear of the shovel chamber is open and forms the shovel throat, the front opening of the shovel chamber is larger than the rear opening of the shovel chamber, the rear cross-section of the shovel chamber is gradually smaller than the front cross-section, and the shovel throat is connected to one end of the hose; The invention is also characterized in that the diameter of the hose is between 2 cm and 8 cm. A road sweeper, characterized in that it comprises the suction nozzle-free and contact-free high-pressure steam column cleaning and lifting device as described in any one of claims 1 to 9.