WO2023142489A1 - Sorting system of cascade dry separator - Google Patents

Abstract

A sorting system of a cascade dry separator, relating to the technical field of material sorting, and comprising a sorting bed (100), a plate turnover device (200), and a backwashing device (300). An unseparated medium coal seam material sorted by the sorting bed (100) is conveyed into the backwashing device (300) by means of a discharging mechanism, and the unseparated medium coal material is reconveyed into the sorting bed (100) by mean of the backwashing device (300) for secondary sorting, such that the waste of the medium coal material is avoided, and the technical problems in the prior art that in the wind power sorting process, under the action of wind and vibration, the material is layered, it is general that a middle part cannot be completely separated, thereby forming a medium coal layer, and a large amount of resources would be wasted due to direct discharge are solved.

Description

Ladder flow dry separator sorting system

This application claims the priority of the Chinese patent application with application number 202210082829.5 submitted to the China Patent Office on January 25, 2022, the entire content of which is incorporated herein by reference.

technical field

The present application relates to the technical field of material separation, for example, it relates to a sorting system of a ladder flow dry separator.

Background technique

In related technologies, wet separation is commonly used in the coal preparation process, which is complex and requires water during the separation process, which is not suitable for water-shortage areas in Northwest China, and the cost of water treatment is relatively high. In addition, in the alpine region, the product coal that is separated by wet method is easy to freeze and difficult to transport, and low-rank coal is easy to produce mud during wet separation. Although the application range of dry separation is not as common as that of wet separation, it has developed extremely rapidly in recent years. Intelligent dry separation equipment (Telligent Dry Separator, TDS) intelligent dry separation machine has basically solved the problem of dry separation of lump coal above 25mm.

However, during the wind separation process, under the action of wind and vibration, the materials are layered, and there is always a middle part that cannot be completely separated, forming a middle coal seam, and direct discharge will cause a large amount of material waste.

Contents of the invention

The application provides a sorting system for a ladder-flow dry sorter to avoid material waste and improve sorting accuracy.

In the first aspect, the separation system of the ladder flow dry separation machine provided by the application includes: a separation bed, a discharge mechanism and a backwashing device;

The sorting bed is set to classify materials according to density, and the discharge mechanism is arranged on the sorting bed along the moving direction of the material, and the discharge mechanism is set to separate the stratified materials in the sorting bed according to the density. The material layer is cut, and the material discharged from the sorting bed after the cutting by the discharge mechanism enters the backwashing device, and the material in the backwashing device can enter the sorting bed again.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the sorting system of the ladder flow dry separator provided by the embodiment of the present application;

Fig. 2 is the schematic structural view of the turnover device in the sorting system of the ladder flow dry separator provided by the embodiment of the present application;

3 is a schematic diagram of the internal structure of the turnover device in the sorting system of the ladder flow dry separator provided by the embodiment of the present application;

Fig. 4 is the structural representation of the sorting bed in the sorting system of the ladder flow dry sorting machine provided by the embodiment of the present application;

Fig. 5 is a partial structural schematic diagram in the sorting system of the ladder flow dry separator provided by the embodiment of the present application;

Fig. 6 is the schematic structural view of the string sieve plate in the sorting system of the ladder flow dry separator provided by the embodiment of the present application;

Fig. 7 is the schematic structural view of the cardan shaft in the sorting system of the ladder flow dry separator provided by the embodiment of the present application;

Fig. 8 is a structural schematic diagram of the vibrating distributor and the control gate in the sorting system of the ladder flow dry separator provided by the embodiment of the present application;

Fig. 9 is a schematic structural diagram of the sorting bed part of the sorting system of the ladder flow dry separator provided by the embodiment of the present invention;

Fig. 10 is a partial structural schematic diagram of the dust removal device in the sorting system of the cascade flow dry separator provided by the embodiment of the present application.

Icons: 100-sorting bed; 110-air distribution bottom plate; 120-feeding slide plate; 130-partition plate; 140-side plate; Clean coal discharge port; 152- medium coal discharge port; 153- gangue discharge port; 200- flap device; 210- diversion board; 220- diversion box; ;222-the second outlet of diversion; 223-the inlet of diversion; 230-turn plate driving member; 300-backwashing device; 301-backwashing belt; 302-transfer belt; 3021-clean coal belt; 3022 - Medium coal belt; 3023- gangue belt; 400- adjustment mechanism; 410- hoisting drive motor; 420- transmission screw; 500- string sieve plate; 510- elastic strip; -Air distribution device; 610-main air duct; 620-air chamber air duct; 630-fan; 700-feeding belt; 701-feeding port; 710-material recovery trolley; 80-dust removal device; 800-dust cover; 801-dust removal air duct; 802-swirl dust collector; 803-guided dust removal port; 900-discharging wheel; 910-cardan shaft; 920-rotation drive motor; 930-vibration distributor;

Detailed ways

The following will describe the embodiments of the present application with reference to the drawings in the embodiments of the present application, and the described embodiments are part of the embodiments of the present application, but not all of the embodiments. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the present application provided in the accompanying drawings represents selected embodiments of the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it need not be defined and explained in subsequent figures.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the application product is used, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying A referenced device or element has a particular orientation, is constructed and operates in a particular orientation. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of this application, it should also be noted that the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or Integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the actual meanings of the above terms in this application according to the actual situation.

Some implementations of the present application will be described in detail below in conjunction with the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

As shown in Figure 1-5, a sorting system of a ladder flow dry separator includes: a sorting bed 100, a discharge mechanism 150, and a backwashing device 300; the sorting bed 100 is set to sort materials in layers according to density ; On the sorting bed 100, a discharge mechanism 150 is set along the direction of material movement, and the discharge mechanism 150 is set to cut the stratified material in the sorting bed 100 according to the material layer, and the material discharged after the discharge mechanism 150 cuts enters In the backwashing device 300 , the materials in the backwashing device 300 can enter the sorting bed 100 again.

In one embodiment, the sorting bed 100 uses the coupling effect of wind force and vibration to sort materials. During the sorting process, under the action of wind and vibration, the materials gradually stratify according to the material density. In the process of movement, it sinks to the bottom layer to form a gangue layer, and the light-density clean coal moves upward to form clean coal. On the sorting bed 100, a discharge mechanism 150 is set along the material movement direction, and the discharge mechanism 150 cuts and sorts The material in the lower layer of the bed 100 is continuously discharged from the sorting bed 100. After the material is discharged from the sorting bed 100, it enters the backwashing device 300. Through the backwashing device 300, the material can enter the sorting bed 100 again. Of course, the material can also pass through the backwashing device 300. The washing device 300 enters other areas. After the material enters the sorting bed 100 through the backwashing device 300, it can be sorted again to avoid material waste and improve the sorting accuracy.

A sorting system for a ladder flow dry separator provided in this embodiment includes: a sorting bed 100, a discharge mechanism 150, and a backwashing device 300; the sorting bed 100 is set to sort materials in layers according to density; A discharge mechanism 150 is arranged on the sorting bed 100 along the moving direction of the material. The discharge mechanism 150 is set to cut the layered materials in the sorting bed 100 according to the material layer, and the discharged material after cutting by the discharge mechanism 150 enters the backwash In the device 300 , the materials in the backwashing device 300 can enter the sorting bed 100 again. The waste of medium coal materials is avoided, and the problems existing in the related technology in the wind separation process, under the action of wind and vibration, the material is stratified, and the material is cut by the discharge mechanism 150 during the discharge process, resulting in The intersecting part of the layer is discharged to form the middle coal seam, and the direct discharge will cause a large amount of data waste.

On the basis of the above-mentioned embodiments, the backwashing device 300 also includes a turning device 200 and a backwashing belt 301, the turning device 200 has a diversion board 210, and the diversion board 210 is configured to be able to rotate relative to the turning device 200 , so as to change the moving direction of the material;

In one embodiment, the backwashing device 300 also includes a turning device 200 and a backwashing belt 301, wherein the setting purpose of the turning device 200 is to change the flow direction of the material discharged by the discharge mechanism 150, and provide The possibility of multiple discharge directions, the turning device 200 has a diversion board 210, and the diversion board 210 is configured to be able to rotate relative to the turning device 200 to change the direction of material movement; when changing the direction of the diversion board 210 At this time, the turning device 200 is connected with the backwashing belt 301, and the material can enter the backwashing belt 301 after passing through the turning device 200, and is transported to the sorting bed 100 by the backwashing belt 301 for re-sorting.

On the basis of the above-described embodiments, the backwashing device 300 also includes a transfer belt 302, the first end of the transfer belt 302 communicates with the discharge mechanism 150, the second end of the transfer belt 302 communicates with the turnover device 200, and the transfer belt 302 is configured To transport the material discharged from the discharge mechanism 150 to the turning device 200 .

In one embodiment, the backwashing device 300 also includes a transfer belt 302, the first end of the transfer belt 302 communicates with the discharge mechanism 150, the second end of the transfer belt 302 communicates with the turnover device 200, and the transfer belt 302 is set to The material discharged by the discharge mechanism 150 is transported to the turning device 200 . After the material is stratified in the sorting bed 100, the discharge mechanism 150 starts to cut and discharge the material from the lower layer, and the discharged material enters the turning device 200 through the transfer belt 302, and the turning device 200 is set to transport the material to the backwashing belt 301, Or transport materials to other areas.

As shown in Figure 2 and Figure 3, in an optional embodiment, the turnover device 200 in the sorting system of the ladder flow dry separator provided in this embodiment includes a diversion box 220 and a turnover driver member 230; The top of the flow box body 220 is provided with a flow diversion inlet 223, the bottom of the flow diversion box body 220 is provided with a flow diversion first discharge port 221 and a flow diversion second discharge port 222, and the transfer belt 302 and the flow diversion feed The port 223 is connected, and the diversion board 210 is arranged in the diversion box 220, and the flap drive member 230 is connected to the diversion splitter 210, and the diversion splitter 210 is driven by the flap drive member 230, The body 220 is rotated to change the outflow path of the material in the diversion box 220, so that the material flows out from the diversion first discharge port 221 or the diversion second discharge port 222.

In one embodiment, the diversion box 220 is a box-type structure, and the top of the diversion box 220 is provided with a diversion feed inlet 223, and the materials sorted by the sorting bed 100 are discharged through the discharge mechanism 150, and then passed through the transfer belt 302. Enter the diversion inlet 223, enter the diversion box 220 through the diversion inlet 223, install the diversion sub-plate 210 in the inside of the diversion box 220, the diversion sub-plate 210 can rotate, and can have Selectively open the diversion first discharge port 221 or the diversion second discharge port 222, when the diversion first discharge port 221 is opened, the material in the diversion box 220 will be diverted from the diversion first discharge port 221 flows out, enters the transfer transport belt, and is transported to the outside of the system. When the second diversion outlet 222 is opened, the material in the diversion box 220 enters the backwash belt 301 and returns to the sorting bed 100 again.

In an optional embodiment, the diversion second outlet 222 is in communication with the backwashing belt 301 , and the material flows out from the diversion second outlet 222 and enters the backwashing belt 301 by adjusting the diversion sub-plate 210 .

In one embodiment, the materials in the diversion box 220 can enter the backwashing belt 301 through the second diversion outlet 222 , and the materials are transported to the sorting bed 100 again by the backwashing belt 301 .

In this embodiment, when the sorting bed 100 starts to work, it may be due to the different quality of the incoming materials, the wind force and the vibration parameter settings are not fully adapted, resulting in uncertain separation effect of the materials discharged by the discharge mechanism 150, which can be obtained by Adjust the deflector sub-plate 210 in the turnover device 200, and optionally make the material be discharged from the diversion first discharge port 221 or the diversion second discharge port 222; when it is necessary to detect or observe the separation effect, it can be selected by The material is discharged from the diversion first discharge port 221. After the detection or observation is completed, if the separation effect is not good, the material is discharged from the diversion second discharge port 222, and the material enters the sorting bed 100 again through the backwash belt 301; Then continue to adjust the sorting parameters and repeat the above steps until the ideal sorting effect is achieved, then choose to discharge the material through the diversion first discharge port 221, and transfer the material to other conveying mechanisms.

Or in another embodiment, when the sorting bed 100 starts to work, according to the characteristics or quality of the material, within a period of time, all the deflectors 210 in the turnover device 200 are selected to open the second deflector. The way of the discharge port 222 makes all the materials discharged from the discharge mechanism 150 enter the backwashing belt 301 through the turnover device 200. window observation or through the backwashing belt 301), adjust the deflector plate 210 in the turnover device 200, so that only the medium coal enters the backwashing belt 301, and other discharged materials enter other transfer belts 302.

In yet another embodiment, the discharge mechanism 150 includes a gangue discharge port 153, a medium coal discharge port 152, and a clean coal discharge port 151, and each discharge port is connected to a turnover device 200, wherein the medium coal The turnover device 200 connected to the discharge port includes a diversion sub-plate 210, and maintains the position of the diversion sub-plate 210 to communicate with the diversion second discharge port 222, and the medium coal discharge port 152 discharges the material. After entering the backwashing belt 301, the material enters the sorting bed 100 again from the backwashing belt 301. The turning device 200 connected to the gangue discharge port 153 intermittently rotates the diversion sub-board 210 according to the preset time, and the gangue is diverted from the first outlet 221 or the second diversion at intervals according to the preset time period. The purpose of discharging from the discharge port 222 is that when the thickness of the gangue layer in the sorting bed 100 is small, the material discharged from the gangue discharge port 153 contains part of clean coal. At this time, the material is discharged from the diversion second discharge port 222 and enters the backwashing belt 301, enter the sorting bed 100 again, through continuous backwashing, the gangue in the sorting bed 100 is continuously gathered, at this time, the material is discharged from the diversion first discharge port 221, and enters other transfer belts 302, clean coal discharge port 151 may not install the turnover device 200, after the clean coal is discharged, it can directly enter other transfer belts 302, or keep the turnover device 200 connected to the clean coal discharge port 151 to keep the material discharged from the diversion first discharge port 221 and enter other transfer belts 302. Transfer belt 302 .

As shown in Fig. 4 and Fig. 9, in an optional embodiment, the sorting bed 100 includes an air distribution bottom plate 110, a feeding slide plate 120, a partition plate 130 and two oppositely arranged side plates 140; the side plates 140 include The left side plate 140, the middle side plate 140 and the right side plate 140, the middle side plate 140 is set along the vibration direction of the sorting bed 100; At the outlet end of the bottom plate 110 , and the partition plate 130 is perpendicular to the air distribution bottom plate 110 , the material layer in the sorting bed 100 overflows the partition plate 130 and is discharged from the clean coal discharge port 151 .

In one embodiment, the sorting bed 100 includes two symmetrical side plates 140, the air distribution bottom plate 110, the feeding slide plate 120 at the feed end and the partition plate 130 at the discharge end, the partition plate 130 is perpendicular to the air distribution bottom plate 110 , the height of the partition plate 130 is 1/5——1/4 of the thickness of the feed bed layer, and the partition plate 130 is extended outwards with a discharge port. When the material moves to the partition plate 130, it overflows through the partition plate The material of 130 is discharged from the discharge port, and a baffle plate is arranged on the discharge port, which is consistent with the height of the side plates 140. The above-mentioned discharge port is the clean coal discharge port 151.

The inclination angle of the feeding slide 120 is 60-75°. The material passes through the feeding belt 700 and enters the feeding slide 120 of the sorting bed 100 through the distributor, and slides into the sorting bed 100 by the feeding slide 120.

The side plate 140 of the sorting bed 100 includes a left side plate 140, a middle side plate 140 and a right side plate 140, wherein the middle side plate 140 is arranged along the vibration direction of the sorting bed 100 to ensure that the structure is stable during the vibration process, wherein the vibration mechanism 142 (optionally as a vibrator) can be installed on the middle side plate 140, symmetrically arranged on the left and right sides, or installed on the connecting rods on the top of the two middle side plates 140 to ensure that the vibration direction of the vibrating mechanism 142 is consistent with that of the middle side plate 140 parallel.

As shown in Figure 5, in an optional embodiment, the sorting system of the ladder flow dry separator also includes an adjustment mechanism 400; the side plate 140 is provided with a hoisting fixture 141, and the adjustment mechanism 400 is connected to the hoisting fixture 141 to adjust The mechanism 400 is configured to drive the side plate 140 to move, so as to adjust the inclination angle of the air distribution bottom plate 110 .

In one embodiment, a hoisting fixture 141 is provided outside the side plate 140, and the hoisting fixture 141 can be set as a lifting lug. 110 is an integral structure, and the adjustment mechanism 400 drives the side plate 140 to move up and down, so that the inclination angle of the air distribution bottom plate 110 can be adjusted.

In an optional embodiment, the adjustment mechanism 400 includes a hoisting drive motor 410 and a transmission screw 420; the first end of the transmission screw 420 is connected to the driving end of the hoisting drive motor 410, and the second end of the transmission screw 420 is connected to the hoisting fixture 141 connect.

In one embodiment, four adjustment mechanisms 400 are provided, and the four adjustment mechanisms 400 are arranged symmetrically on both sides of the side plate 140 , and the lifting drive motor 410 is used to drive the transmission screw 420 to drive the side plate 140 to move up and down.

As shown in Figure 6, in an optional embodiment, the wind distribution bottom plate 110 is provided with a string sieve plate 500; the string sieve plate 500 includes a plurality of elastic strips 510, fixing strips 520 and fastening bolts 530; the elastic strips Both sides of 510 are provided with fixing strips 520, which are fixed on the air distribution bottom plate 110 through the fixing strips 520; the fastening bolts 530 are connected with the fixing strips 520, and the fastening bolts 530 are configured to drive the fixed strips 520 to move to adjust the elastic strips. 510 tension level.

Usually, the air distribution bottom plate 110 adopts a perforated plate, supported by a cross, and fixed by screws, and the vibration amplitude becomes smaller due to rigid fixation, resulting in blockage of the bed plate.

In one embodiment, the polyurethane fixing strip 520 is fixed on the cross structure of the air distribution bottom plate 110 through the installation hole, and a plurality of elastic strips 510 placed side by side are sandwiched between the two fixing strips 520, and the elastic strips 510 can be arranged in a wave shape , can also be set as a straight line, and the elastic strip 510 is set as a wear-resistant elastic steel strip. With the large vibration amplitude of the elastic strip 510, when the equipment vibrates, it will drive the vibration of the elastic steel strip, and the distance between the vibrating steel strips will change. Periodic changes, when materials with a particle size close to the gap between the steel bars are stuck between the elastic steel bars, the changed spacing will cause the stuck materials to loosen and fall, or after adhering to the flexible screen surface, the elastic steel bars themselves Under the elastic deformation of the material, the adhered materials will be thrown away, which solves the problem of jamming and adhesion of the air distribution bottom plate 110 during the dry separation process.

In addition, the first end of the fastening bolt 530 is installed on the frame, the second end of the fastening bolt 530 is connected with the fixing bar 520, and the fixing bar 520 is driven to move by rotating the fastening bolt 530, so that the parts connected with the fixing bar 520 The elastic strip 510 is stretched straight to prevent the elastic strip 510 from loosening after a long time of use, so as to meet the actual needs of production.

In an optional embodiment, as shown in Figure 1, the sorting system of the cascade flow dry separator also includes an air distribution device 600; the air distribution device 600 also includes a main air duct 610 and an air chamber air duct 620; a plurality of air chamber air ducts The pipes 620 are all in communication with the main air duct 610, and the end of the main air duct 610 has a fan 630, and the inner diameter of the main air duct 610 gradually decreases along the direction away from the fan 630, so that the air volume entering the air duct 620 of multiple air chambers same.

In one embodiment, the inner diameter of the main air duct 610 gradually decreases along the direction away from the fan 630 to ensure that the same fan 630 supplies air, and the air volume of multiple air chamber air ducts 620 is the same. The size of the air volume, the digital air valve can provide evenly changing pulsating air, and there is also an air equalizing plate, which is a porous plate with the same inner diameter as the air chamber air duct 620, and its function is to even the wind entering the air chamber, so that the contact The wind at each position of the air distribution plate is uniform, and the preset wind enters the air chamber after passing through the air uniform plate, diffuses from the air chamber, passes through the string sieve plate 500, and then enters the sorting bed 100.

In an optional embodiment, the sorting system of the ladder flow dry separator further includes a feeding belt 700; One side of the sorting bed 100 is provided with a material recovery trolley 710, and the feeding belt 700 can transport the material to the material recovery trolley 710 along the second direction, and the first direction is opposite to the second direction; the discharge port of the backwash belt 301 The material inlet 701 connected to the feeding belt 700 is used for transporting the material in the backwashing belt 301 to the sorting bed 100 .

In one embodiment, the first direction is the direction of conveying materials to the sorting bed 100, the second direction is the opposite direction of the first direction, and the end of the feeding belt 700 is provided with an openable return port, and the feeding belt 700 is The two-way belt can be reversed so that the material can be recycled into the material recovery trolley 710.

As shown in Figure 7, in an optional embodiment, the sorting bed 100 includes at least two discharge mechanisms 150, and a discharge wheel 900 is arranged in the discharge mechanism 150, and the discharge wheel 900 is connected to the rotating shaft 910 through a cardan shaft. The drive motor 920 is connected by transmission, and the rotation drive motor 920 is installed on the peripheral support frame.

In one embodiment, the sorting system of the ladder flow dry separator further includes a first air chamber, a second air chamber, and a third air chamber. It is configured to divide the sorting bed 100 into a first screening chamber, a second screening chamber and a third screening chamber, the first air chamber communicates with the first screening chamber, and the second air chamber communicates with the second screening chamber. The screening chamber communicates, the third air chamber communicates with the third screening chamber, a discharge wheel 900 is arranged between the first screening chamber and the second screening chamber, the second screening chamber and the third screening chamber The discharge wheel 900 is arranged between the sub-chambers. Since the rotating drive motor 920 has a certain weight, it cannot be installed on the sorting bed 100, and the sorting bed 100 vibrates again with a certain amplitude. For the problem of power transmission, the universal joint shaft 910 is connected to the transmission shaft to ensure that the rotation speed of the discharge wheel 900 is accurately and controllable, and the transmission motor is fixedly installed on the peripheral support frame.

In an optional embodiment, the discharge mechanism 150 includes a gangue discharge mechanism and a medium coal discharge mechanism. The gangue discharge mechanism is connected to the turnover device 200 through the transfer belt 302, and the medium coal discharge mechanism is connected to the backwash through the transfer belt 302. device 300. In one embodiment, the transfer belt 302 includes: a clean coal belt 3021 , a medium coal belt 3022 and a gangue belt 3023 .

As shown in Figures 1 and 10, in an optional embodiment, the sorting system of the cascade flow dry separator further includes a dust removal device 80, and the dust removal device 80, the sorting bed 100 and the air distribution device 600 form a sealed internal circulation airflow.

In an optional embodiment, the dust removal device 80 includes a dust removal cover 800, a dust removal air duct 801, and a cyclone dust collector 802; The dust removal device 80 is in communication, and the outlet end of the cyclone dust collector 802 is in communication with the backwashing device 300 .

In one embodiment, the dust removal device 80 adopts a cyclone dust collector 802 , and the outlet of the centrifugal barrel of the cyclone dust collector 802 is connected to the backwashing device 300 .

In one embodiment, because the work of the sorting bed 100 is vibrating, there is up and down displacement, and the dust removal device 80 is fixedly installed, so the dust removal cover 800 and the sorting bed 100 are directly connected by canvas softly, so that the dust removal cover 800 and the sorting bed 100 are softly connected. The connection between the sorting beds 100 has a certain amount of displacement.

In addition, the discharge port of the third screening chamber is an overflow port, which is collected by the receiving system. Because the discharge port is fixedly connected with the bed body, it is in a vibrating state during work. In order to ensure that the material does not overflow, it can Accurately received by the receiving system, the shape of the designed receiving system matches the bottom of the discharge port, and the diameter is larger than the discharge port.

As shown in Figure 8, in an optional embodiment, the sorting system of the ladder flow dry separator also includes a vibration distributor 930; the vibration distributor 930 is arranged at the discharge end of the feeding belt 700, and the vibration distributor 930 is arranged There is a control gate 940 for controlling the amount of material fed to the sorting bed 100 .

In one embodiment, the vibrating distributor 930 is provided with a control gate 940, and the control gate 940 rotates relative to the vibrating distributor 930 as required to adjust the opening of the gate, thereby controlling the thickness and amount of the fabric.

Claims (16)

A sorting system for a ladder flow dry separator, comprising: a sorting bed (100), a discharge mechanism (150) and a backwashing device (300); The sorting bed (100) is set to sort materials in layers according to the density, and the discharging mechanism (150) is arranged on the sorting bed (100) along the moving direction of the material, and the discharging mechanism (150 ) is set to cut the stratified material in the sorting bed (100) according to the material layer, and the material discharged from the sorting bed (100) after the cutting by the discharge mechanism (150) enters the backwashing device (300 ), the material in the backwashing device (300) can enter the sorting bed (100) again. The sorting system of ladder flow dry separator according to claim 1, wherein the backwashing device (300) further comprises a turning device (200) and a backwashing belt (301), and the turning device (200) There is a deflector sub-plate (210), and the deflector sub-plate (210) is configured to be able to rotate relative to the turnover device (200) to change the movement direction of the material; the material in the turnover device (200) Configured to be able to enter into said backwash belt (301). The sorting system of ladder flow dry separator according to claim 2, wherein, the backwashing device (300) further comprises a transfer belt (302), the first end of the transfer belt (302) is connected to the discharge mechanism (150), the second end of the transfer belt (302) communicates with the turning device (200), and the transfer belt (302) is configured to transport the material discharged by the discharge mechanism (150) to the turning device (200). Plate assembly (200). The sorting system of ladder flow dry separator according to claim 3, wherein, The flap device (200) includes a diversion box (220) and a flap driving member (230); The top of the diversion box (220) is provided with a diversion inlet (223), the transfer belt (302) communicates with the diversion inlet (223), and the diversion box (220 ) is provided with a diversion first outlet (221) and a diversion second outlet (222), the diversion sub-plate (210) is arranged in the diversion box (220), and The flap driving member (230) is in transmission connection with the diversion splitter (210), and the diversion splitter (210) is driven by the flap driver (230). (220) to rotate in order to change the material outflow path in the diversion box (220), so that the material is passed through the diversion first outlet (221) or the diversion second outlet (222) ) flow out. The sorting system of the ladder flow dry separator according to claim 4, wherein, the second discharge port (222) of the diversion is connected with the backwashing belt (301), and by adjusting the diversion plate (210) The material flows out from the diversion second outlet (222) and enters the backwashing belt (301). The sorting system of ladder flow dry separator according to claim 1, wherein, The sorting bed (100) includes an air distribution bottom plate (110), a feeding slide plate (120), a partition plate (130) and two opposite side plates (140); The side plate (140) includes a left side plate (140), a middle side plate (140) and a right side plate (140), and the middle side plate (140) is arranged along the vibration direction of the sorting bed (100); The feeding slide plate (120) is arranged at the inlet end of the air distribution bottom plate (110), the partition plate (130) is arranged at the outlet end of the air distribution bottom plate (110), and the partition plate (130) is perpendicular to the air distribution bottom plate (110), and the material layer in the sorting bed (100) overflows the partition plate (130) and then is discharged from the clean coal discharge port (151). The sorting system of the ladder flow dry separator according to claim 6, further comprising an adjustment mechanism (400); The side plate (140) is provided with a hoisting fixture (141), the adjustment mechanism (400) is connected to the hoisting fixture (141), and the adjustment mechanism (400) is configured to drive the sorting The bed (100) moves to adjust the inclination angle of the air distribution floor (110). The sorting system of ladder flow dry separator according to claim 7, wherein, The adjustment mechanism (400) includes a hoisting drive motor (410) and a transmission screw (420); The first end of the transmission screw (420) is connected to the driving end of the hoisting driving motor (410), and the second end of the transmission screw (420) is connected to the hoisting fixture (141). The sorting system of ladder flow dry separator according to claim 6, wherein, The air distribution bottom plate (110) is provided with a string sieve plate (500); The string sieve plate (500) includes a plurality of elastic strips (510), fixing strips (520) and fastening bolts (530); Both sides of the elastic strip (510) are provided with the fixing strip (520), and are fixed on the air distribution bottom plate (110) through the fixing strip (520); The fastening bolt (530) is connected with the fixing bar (520), and the fastening bolt (530) is configured to drive the moving of the fixing bar (520) to adjust the tension of the elastic bar (510). tightness. The sorting system of the ladder flow dry separator according to claim 1, further comprising an air distribution device (600); The air distribution device (600) includes a main air duct (610) and an air chamber air duct (620); A plurality of air chamber air ducts (620) are all communicated with the main air duct (610), the end of the main air duct (610) has a fan (630), and the main air duct (610) is along the The inner diameter decreases gradually in the direction away from the fan (630), so that the air volumes entering the plurality of air chamber air ducts (620) are the same. The sorting system of the ladder flow dry separator according to claim 2, further comprising a feeding belt (700); The feeding belt (700) is configured to transport materials into the sorting bed (100) along a first direction, and the feeding belt (700) is set away from the side of the sorting bed (100) There is a material recovery trolley (710), and the feeding belt (700) can transport materials into the material recovery trolley (710) along a second direction, and the first direction is opposite to the second direction. The sorting system of the ladder flow dry separator according to claim 11, wherein the discharge port of the backwash belt (301) is connected to the feed inlet (701) of the feeding belt (700), so that the backwash belt The material in (301) is transported to the sorting bed (100). The sorting system of ladder flow dry separator according to claim 1, wherein, The sorting bed (100) includes at least two discharge mechanisms (150), the discharge mechanism (150) is provided with a discharge wheel (900), and the discharge wheel (900) passes through a cardan shaft ( 910) is in transmission connection with the rotation drive motor (920), and the rotation drive motor (920) is installed on the peripheral support frame. The sorting system of the ladder flow dry separator according to claim 1, further comprising a dust removal device (80), the dust removal device (80), the sorting bed (100) and the air distribution device (600) form a seal internal circulation airflow. The sorting system of ladder flow dry separator according to claim 14, wherein, The backwashing device (300) also includes a turning device (200) and a backwashing belt (301), and the turning device (200) has a diversion board (210), and the diversion board (210) It is configured to be able to rotate relative to the turning device (200) to change the moving direction of the material; the material in the turning device (200) is configured to be optionally able to enter the backwashing belt (301); The dust removal device (80) includes a dust removal cover (800), a dust removal air duct (801), and a cyclone dust collector (802); The dust removal cover (800) is softly connected with the sorting bed (100), the flap device (200) communicates with the dust removal device (80) through the diversion dust removal port (803), and the cyclone dust collector ( 802) is in communication with the backwashing device (300). The sorting system of the ladder flow dry separator according to claim 11, further comprising a vibrating distributor (930); The vibrating distributor (930) is arranged at the discharge end of the feeding belt (700), and the vibrating distributor (930) is provided with a control gate (940), which is set to control the flow to the sorting bed (100). The input amount of the cloth.

Images