Energy-saving lump raw coal separation equipment

Abstract

The invention relates to the technical field of coal mine treatment equipment, and discloses energy-saving lump raw coal sorting equipment which comprises a machine body, a screening and filtering device is arranged on the machine body and comprises a filter cone, a first filter tank, a second filter tank and a third filter tank which are sequentially connected in series are arranged in the filter cone, and the first filter tank is communicated with a feeding hopper through a feeding port. The first filter tank is communicated with the second filter tank through a channel I, the second filter tank is communicated with the third filter tank through a channel II, and the vertical heights of the feed port, the channel I, the channel II and the feed port are sequentially increased. The screening and filtering device is used for filtering raw coal entering the machine body for multiple times, fine particles mixed in the raw coal move to the bottom of the screening and filtering device in the filtering process and are discharged from an end opening of a material collecting hopper at the bottom of the screening and filtering device, and the number of the fine particles entering the machine body is reduced; therefore, the problem that fine particles pollute coal briquettes in the coal washing process can be avoided, and impurities in media can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine processing equipment, in particular to energy-saving lump raw coal sorting equipment. Background Art

[0002] Raw coal sorting is the core link of a coal preparation plant. Its purpose is to separate and extract impurities and harmful substances in coal based on the physical and chemical properties of coal. Commonly used ones include heavy medium shallow trough separators. Heavy medium shallow trough separators are a physical coal preparation method that is mainly achieved by using a liquid or suspension with a density between clean coal and gangue as a sorting medium.

[0003] When the existing heavy medium shallow trough separator is in use, the external coal conveying equipment delivers the crushed lump of raw ore into the heavy medium shallow trough. Under the action of the medium, the coal blocks float on the uppermost layer of the medium, and other impurities such as gangue settle to the bottom of the shallow trough. However, after the raw ore is crushed, other fine particle impurities except the coal blocks are settled at the bottom of the shallow trough. When the scraper pushes the gangue to the outside of the shallow trough, it is difficult for the bottom end of the scraper to contact the fine particle impurities at the bottom of the shallow trough and cannot push the fine particle impurities out of the shallow trough, causing the fine particles at the bottom of the shallow trough to continue to be mixed in the medium. With the impact force of the ascending medium, the fine particle impurities are easily discharged from the discharge port along with the coal blocks and the medium, thereby affecting the quality of the coal blocks. In the later process of processing the coal blocks, an additional process for removing fine particle impurities is required. The additional electrical equipment also increases the energy consumption of the processing process, and the economic benefits are reduced. Summary of the invention

[0004] The invention provides an energy-saving lump raw coal sorting device to solve the problem that the existing fine particles are deposited at the bottom of a shallow trough and are easily discharged from a discharge port along with the coal blocks and media, thereby affecting the quality of the coal blocks.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an energy-saving lump raw coal sorting equipment, comprising a machine body, a screening device is arranged on one side of the machine body, the screening device comprises a filter bucket, a feed hopper is arranged on the front surface of the filter bucket, a feeding port is arranged on the rear surface, a first filter slot, a second filter slot and a third filter slot connected in series are arranged in the filter bucket, the first filter slot and the feed hopper are communicated through the feeding port, the first filter slot and the second filter slot are communicated through a channel, the second filter slot and the third filter slot are communicated through two channels, the feeding port is communicated with the third filter slot, and the vertical heights of the feeding port, the first channel, the second channel and the feeding port are increased in sequence;

[0006] The bottom of the filter hopper is open, and a laterally detachable filter plate is arranged in the open mouth. A collecting funnel is fixed to the bottom of the filter hopper, and a collecting box is arranged below the collecting funnel. A plurality of vibration motors are fixed to the outer wall of the filter hopper. A feed slide is arranged on the front surface of the machine body, and the feed port is connected to the feed slide through a discharge pipe.

[0007] Preferably, a shallow groove is provided in the body, a main sprocket and several secondary sprockets are provided on the inner wall of the body, a main shaft is fixed in the middle of the main sprocket, a driving mechanism is provided at the end of the main shaft, a discharge groove is provided on the side of the body away from the feed slide, a discharge port is provided at the bottom of one end of the body, a transmission chain is provided between the main sprocket and the secondary sprocket, and a plurality of push plates are fixed on the transmission chain; a perforated plate is provided at the bottom of the shallow groove of the body, an upper leakage hole is provided at the top of the perforated plate, and a liquid leakage groove is provided below the perforated plate.

[0008] Preferably, a leakage plate movable leftward and rightward is provided in the leakage trough, a lower leakage hole is provided on the top of the leakage plate, and the upper leakage hole on the top of the orifice plate and the lower leakage hole on the top of the leakage plate are arranged alternately.

[0009] Preferably, traction components are provided on both sides of the leakage plate, and the traction components include traction cloths connected to the two ends of the leakage plate, and the extending ends of the traction cloths are provided with mounting shafts, and the front and rear surfaces of the bottom end of the body are provided with through holes, and the traction components also include a sealing box provided on one side of the through hole, and a sealing track is fixed to the top of the sealing box, and a mounting seat is fixed to the top of the sealing track.

[0010] Preferably, a slide groove is provided inside the sealing track, and the extended end of the traction cloth passes through the through hole and the sealing box and then extends into the mounting seat; during the sorting process, the material stone is pushed into the feed slide by the conveyor, and then falls into the shallow groove in the machine body, and the shallow groove is filled with heavy medium, and the heavy medium has a density greater than 1g / cm 3 The medium includes heavy suspension and heavy liquid; specifically, heavy medium is a medium with a density greater than that of water. It is used in the coal sorting process. It utilizes the density difference between mineral particles to produce floating and sinking effects through the Archimedes principle, so that the valuable components in the coal raw materials can be enriched or purified.

[0011] Preferably, a mounting slot is provided in the mounting seat, the mounting shaft is disposed in the mounting slot and can rotate in the mounting slot, a stepper motor is fixed to one end of the mounting seat, and an output shaft of the stepper motor is connected to the mounting shaft.

[0012] Preferably, a first shaft is provided inside the body at one side of the through hole, a second shaft is provided inside the sealing box, the first shaft and the second shaft have the same length, and the traction cloth contacts the outer walls of the first shaft and the second shaft.

[0013] Preferably, a liquid storage box is provided on one side of the bottom of the machine body, a fixing plate is provided between the liquid storage box and the machine body, the fixing plate and the machine body are fixedly connected by bolts, and a waste discharge pipe is inserted inside the liquid storage box.

[0014] Preferably, two sealing plates are symmetrically arranged on the outer wall of the sealing box, the sealing plates are fixedly connected to the body by bolts, and grooves are provided on both side walls of the body, and the sealing plates match the grooves.

[0015] Preferably, a slide plate is provided inside the machine body at one end of the orifice plate, a material guide plate is fixed to one end of the slide plate, and one end of the material guide plate extends to the discharge port and is fixed to a chute plate.

[0016] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0017] (1) The present invention provides a screening device on one side of the feed slide of the machine body, and the screening device is used to filter the raw coal entering the machine body multiple times. During the filtering process, fine particles mixed in the raw coal move to the bottom of the screening device and are discharged from the aggregate hopper port at the bottom of the screening device, thereby reducing the number of fine particles entering the machine body, thereby avoiding the problem of fine particles contaminating coal blocks during the coal washing process, and is also beneficial to reducing impurities in the medium.

[0018] (2) A perforated plate structure is provided at the bottom of the trough of the machine body, and a liquid leakage trough is provided below the perforated plate. During the coal preparation process, fine particles in the raw coal enter the machine body and settle downward and accumulate on the perforated plate. After the upper leakage hole of the perforated plate is opened, the fine particles enter the liquid leakage trough through the upper leakage hole, so that the gangue in the coal mine can be separated from the fine particles, thereby eliminating the need to use a traditional push plate structure to push the fine particles out of the trough body, which is beneficial to avoiding the problem of fine particle impurities being mixed in the medium. In the subsequent coal block cleaning, the process of removing fine particle impurities can be saved, thereby reducing energy consumption, achieving the purpose of energy saving, and improving the quality of coal preparation.

[0019] (3) By setting a leakage plate at the bottom of the orifice plate and arranging traction components on both sides of the leakage plate, the leakage plate is driven to move back and forth left and right by the traction components, so that the opening size of the upper leakage hole can be adjusted, and it is convenient to control the falling time of fine particle impurities above the orifice plate, which is conducive to the quantitative discharge of fine particle impurities, avoids the problem of continuous downward flow of the medium from the leakage tank, and improves the stability of the medium in the shallow tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a front view of the present invention;

[0023] Figure 3 for Figure 2 The state diagram after the screening device is removed;

[0024] Figure 4 for Figure 3 The state diagram after the traction component is removed;

[0025] Figure 5 for Figure 3 A top view of

[0026] Figure 6 It is a structural schematic diagram of the machine body and the traction assembly of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the machine body, traction assembly and screening device of the present invention;

[0028] Figure 8 for Figure 6 Enlarged view of part A in the middle;

[0029] Fig. 9 for Figure 7 Enlarged view of middle part B;

[0030] Fig.10 A left side view of the traction cloth and the leakage plate of the present invention;

[0031] Fig.11 A top view of the traction cloth and the leaking plate of the present invention;

[0032] Fig.12 It is a top view of the orifice plate of the present invention.

[0033] In the figure:

[0034] 1. Machine body; 101. Driving mechanism; 2. Main sprocket; 3. Secondary sprocket; 4. Transmission chain; 5. Push plate; 6. Discharge trough; 7. Waste discharge pipe; 8. Liquid storage box; 9. Fixed plate; 10. Orifice plate; 11. First shaft; 12. Leakage trough; 13. Slide plate; 14. Guide plate; 15. Chute plate; 16. Discharge port; 17. Feed slide; 18. Sealing track; 19. Sealing box; 20. Mounting seat; 21. Stepper motor; 22. Spindle; 23. Through hole; 24. Groove; 25. Traction cloth; 26. Second shaft; 27. Sealing plate; 28. Leakage plate; 29. ​​Mounting shaft; 30. Lower leakage hole; 31. Upper leakage hole; 32. Filter plate; 33. Vibration motor; 34. Collecting funnel; 35. Collecting box; 36. Filter hopper; 37. Feed port; 38. Feed hopper; 39. First steel plate; 40. First channel; 41. Second steel plate; 42. Second channel; 43. Discharge pipe; 44. Feed port. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The present invention provides Figure 1-Figure 9 The energy-saving lump raw coal sorting equipment shown in the figure comprises a machine body 1, a shallow groove is provided in the machine body 1, a main sprocket 2 and a plurality of auxiliary sprockets 3 are provided on the inner wall of the machine body 1, a main shaft 22 is fixed in the middle of the main sprocket 2, a driving mechanism 101 is provided at the end of the main shaft 22, a feed slide 17 is provided on the front surface of the machine body 1, a discharge trough 6 is provided on the side of the machine body 1 away from the feed slide 17, a discharge port 16 is provided at the bottom of one end of the machine body 1, a transmission chain 4 is provided between the main sprocket 2 and the auxiliary sprocket 3, and a plurality of push plates 5 are fixed on the transmission chain 4;

[0037] A screening device is provided on one side of the body 1, and the screening device includes a filter bucket 36, a feed port 37 is provided on the front surface of the filter bucket 36, a feed hopper 38 is provided on one side of the feed port 37, and the feed hopper 38 is fixed on the front surface of the filter bucket 36, a first steel plate 39 is provided inside the filter bucket 36, a second steel plate 41 is provided on the side of the first steel plate 39 away from the feed hopper 38, a first filter slot is provided between the first steel plate 39 and the feed hopper 38, a second filter slot is provided between the first steel plate 39 and the second steel plate 41, and a third filter slot is provided on the side of the second steel plate 41 away from the second filter slot; a channel 40 is provided on the first steel plate 39, and two channels 42 are provided on the second steel plate 41;

[0038] A feed port 44 is provided on the rear surface of the filter hopper 36, and a discharge pipe 43 is connected to one side of the feed port 44. The extended end of the discharge pipe 43 is connected to the feed slide 17;

[0039] The bottom of the filter hopper 36 is open, and a laterally detachable filter plate 32 is arranged in the opening, and a plurality of holes are opened on the top of the filter plate 32. A collection funnel 34 is fixed to the bottom of the filter hopper 36, and a collection box 35 is arranged below the collection funnel 34. A plurality of vibration motors 33 are fixed to the outer wall of the filter hopper 36.

[0040] In this embodiment, before the raw coal is put into the machine body 1 of the present application, the raw coal is pre-screened and filtered. The raw coal first enters the feed hopper 38. A material trough is provided in the feed hopper 38. The raw coal is accumulated in the material trough. The vibration motor 33 is started. The vibration motor 33 drives the filter hopper 36 to vibrate continuously and strongly. During the vibration of the filter hopper 36, the feed hopper 38 is driven to vibrate strongly. The raw coal in the feed hopper 38 passes through the feed port 37 and then falls into the first filter trough. The raw coal moves downward and accumulates in the first filter trough. During the continuous vibration, the fine particles in the raw coal reach the bottom of the first filter trough due to the vibration, and fall into the collection hopper 34 through the filter plate 32, and finally are discharged from the bottom of the collection hopper 34 and fall into the collection box 35.

[0041] A large amount of raw coal is accumulated in the first filter tank. After the height of the accumulation reaches one side of a channel 40, the raw coal enters the second filter tank through the channel 40 under the action of vibration. The raw coal continues to shake in the second filter tank. When a large amount of raw coal is accumulated in the second filter tank, the height of the accumulation reaches one side of a second channel 42. After the height of the accumulation reaches one side of a feed port 44, the raw coal enters the discharge pipe 43 through the feed port 44 under the action of vibration, and enters the feed slide 17 along the discharge pipe 43.

[0042] It should be noted that the feed port 37 is lower than the first channel 40 , the second channel 42 is higher than the first channel 40 , the feed port 44 is higher than the second channel 42 , and the feed port 44 is higher than the feed slide 17 .

[0043] A perforated plate 10 is provided at the bottom of the shallow groove of the machine body 1, an upper leakage hole 31 is provided at the top of the perforated plate 10, and a liquid leakage groove 12 is provided below the perforated plate 10;

[0044] A slide plate 13 is provided at one end of the orifice plate 10 inside the machine body 1, a guide plate 14 is fixed to one end of the slide plate 13, and one end of the guide plate 14 extends to the discharge port 16 and is fixed to a chute plate 15;

[0045] In this embodiment, the purpose of coal preparation is mainly to improve the quality of coal, reduce the emission of coal-burning pollutants, improve the efficiency of coal utilization and optimize the product structure. Before coal preparation, the raw coal is crushed, and the crushed material stone mainly contains coal stone, gangue and other impurities, among which fine particle impurities formed by crushing by the crusher are also mixed in the material stone;

[0046] During the sorting process, a small amount of fine particles may follow the raw coal after screening and enter the machine body 1. In order to ensure the quality of the coal blocks after coal washing, the fine particles entering the shallow groove of the machine body 1 need to be processed;

[0047] Specifically, the raw coal enters the feed slide 17 and falls into the shallow groove in the body 1. The shallow groove is filled with heavy medium, and the heavy medium has a density greater than 1g / cm 3 The medium includes heavy suspension and heavy liquid; specifically, heavy medium is a medium with a density greater than that of water. It is used in the coal sorting process. It utilizes the density difference between mineral particles to produce floating and sinking effects through the Archimedean principle, so that the valuable components in the coal raw materials are enriched or purified;

[0048] Start the driving mechanism 101, which includes a three-phase motor and a reduction mechanism. The driving mechanism 101 is a prior art and will not be described in detail herein. The driving mechanism 101 drives the main shaft 22 to rotate, and the main shaft 22 drives the transmission chain 4, and the transmission chain 4 drives the push plate 5. When the push plate 5 passes through the bottom of the shallow groove of the body 1, the push plate 5 pushes the gangue and other impurities deposited at the bottom of the shallow groove. The gangue moves to the discharge port 16 through the slide plate 13, the guide plate 14 and the chute plate 15, and is discharged from the body 1. The coal blocks float on the medium, and the coal blocks eventually overflow from the discharge chute 6, thereby completing the discharge of the coal blocks.

[0049] like Figure 1-Figure 12 As shown, a leakage plate 28 movable leftward and rightward is provided in the leakage tank 12, a lower leakage hole 30 is provided on the top of the leakage plate 28, and the upper leakage hole 31 on the top of the orifice plate 10 and the lower leakage hole 30 on the top of the leakage plate 28 are arranged alternately;

[0050] A traction assembly is provided on both sides of the leakage plate 28, and the traction assembly includes a traction cloth 25 connected to both ends of the leakage plate 28, and a mounting shaft 29 is provided at the extended end of the traction cloth 25. Through holes 23 are provided on the front surface and the rear surface of the bottom end of the body 1, and the traction assembly also includes a sealing box 19 provided on one side of the through hole 23, and a sealing track 18 is fixed on the top of the sealing box 19, and a mounting seat 20 is fixed on the top of the sealing track 18;

[0051] A slide groove is provided inside the sealing track 18, and the extended end of the traction cloth 25 passes through the through hole 23 and the sealing box 19 and then extends into the mounting seat 20; a mounting groove is provided in the mounting seat 20, and a mounting shaft 29 is arranged in the mounting groove and can rotate in the mounting groove. A stepper motor 21 is fixed at one end of the mounting seat 20, and the output shaft of the stepper motor 21 is connected to the mounting shaft 29;

[0052] The first shaft 11 is arranged on one side of the through hole 23 inside the machine body 1, and the second shaft 26 is arranged inside the sealing box 19. The first shaft 11 and the second shaft 26 have the same length, and the traction cloth 25 contacts the outer wall of the first shaft 11 and the second shaft 26. Specifically, the stepper motor 21 is started, and the output shaft of the stepper motor 21 drives the ends of the traction cloth 25 at both ends of the leakage plate 28 to move, and the output shaft of the stepper motor 21 rotates alternately counterclockwise and clockwise, thereby pulling the leakage plate 28 to move left and right. Since the leakage plate 28 is located below the orifice plate 10, and the orifice plate The upper leakage hole 31 of the orifice plate 10 and the lower leakage hole 30 of the leakage plate 28 are alternately staggered. When the leakage plate 28 moves to the left, the lower leakage hole 30 is displaced and aligned with the upper leakage hole 31, so that the fine particle impurities originally above the orifice plate 10 move downward and pass through the upper leakage hole 31 and the lower leakage hole 30. After the leakage plate 28 moves to the right, the leakage plate 28 is in a reset action, and the lower leakage hole 30 is also reset. The upper leakage hole 31 is staggered with the lower leakage hole 30, and the upper leakage hole 31 is blocked by the leakage plate 28, thereby blocking the gangue or fine particle impurities on the top of the orifice plate 10; in this process, the leakage plate 28 moves left and right repeatedly.

[0053] It should be noted that the apertures of the upper leakage hole 31 and the lower leakage hole 30 should be larger than the particle size of fine particle impurities and smaller than gangue. Gangue is generally block-shaped and will not pass through the upper leakage hole 31 and the lower leakage hole 30.

[0054] like Figure 1-Figure 5 As shown, a liquid storage tank 8 is arranged on one side of the bottom of the body 1, a fixing plate 9 is arranged between the liquid storage tank 8 and the body 1, the fixing plate 9 is fixedly connected to the body 1 by bolts, and a waste pipe 7 is inserted inside the liquid storage tank 8; the liquid storage tank 8 is mainly used to collect the medium discharged from the orifice plate 10 to prevent the medium from overflowing the body 1, and a sewage pump can be connected to the extended end of the waste pipe 7 to extract the fine particle impurities located at the bottom of the liquid storage tank 8 by the sewage pump; extracting the fine particle impurities separately can save the processing process of the fine particle impurities in the later stage, reduce the processing facilities, reduce the energy consumption, and achieve the purpose of energy saving.

[0055] It should be noted that the fine impurities pass through the upper leakage hole 31 and the lower leakage hole 30, and then fall into the leakage groove 12, and flow into the bottom of the liquid storage box 8. The inner bottom of the liquid storage box 8 is an inclined surface, and the fine impurities move to one side of the inner bottom of the liquid storage box 8, so that it is convenient to concentrate on extracting the fine impurities. The end of the waste pipe 7 is just inserted above the inclined low position of the liquid storage box 8;

[0056] A tee pipe can be connected to the end of the waste pipe 7, one of the tee pipes is connected to a pipe for discharging fine particles of impurities, and the other is connected to a high-pressure pump. The high-pressure pump can inject new medium into the waste pipe 7 and discharge it at the end of the waste pipe 7, thereby entering the leakage tank 12, and then flowing upward through the lower leakage hole 30 and the upper leakage hole 31, and then rushing into the shallow tank of the body 1, so as to form an upward flow and replenish new medium into the shallow tank to ensure the stability of the medium in the shallow tank.

[0057] like Figure 4 and Figure 8 As shown, two sealing plates 27 are symmetrically arranged on the outer wall of the sealing box 19, and the sealing plates 27 are fixedly connected to the body 1 by bolts. Grooves 24 are provided on both side walls of the body 1, and the sealing plates 27 match the grooves 24. Before installing the sealing box 19, the sealing plates 27 at the ends of the sealing box 19 are fitted into the grooves 24, and then the sealing box 19 is fixed to the side walls of the body 1 by bolts, so that the medium in the body 1 will not flow out from the gap between the sealing box 19 and the body 1.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An energy-saving lump coal sorting device, comprising a body (1), characterized in that: A screening device is provided on one side of the machine body (1), the screening device comprising a filter hopper (36), a feed hopper (38) being provided on the front surface of the filter hopper (36), a feed port (44) being provided on the rear surface, a first filter slot, a second filter slot and a third filter slot being sequentially connected in series being provided in the filter hopper (36), the first filter slot and the feed hopper (38) being communicated with each other through the feed port (37), the first filter slot and the second filter slot being communicated with each other through a channel (40), the second filter slot and the third filter slot being communicated with each other through two channels (42), the feed port (44) being communicated with the third filter slot, and the vertical heights of the feed port (37), the first channel (40), the second channel (42) and the feed port (44) being increased in sequence; The bottom of the filter hopper (36) is open, and a laterally detachable filter plate (32) is arranged in the open hole. A collecting funnel (34) is fixed to the bottom of the filter hopper (36), and a collecting box (35) is arranged below the collecting funnel (34). A plurality of vibration motors (33) are fixed to the outer wall of the filter hopper (36); a feed slide (17) is arranged on the front surface of the machine body (1), and a feed port (44) is connected to the feed slide (17) through a discharge pipe (43).

2. The energy-saving lump coal sorting equipment according to claim 1 is characterized in that: A shallow groove is provided in the machine body (1), a main sprocket (2) and a plurality of secondary sprockets (3) are provided on the inner wall of the machine body (1), a main shaft (22) is fixed in the middle of the main sprocket (2), a driving mechanism (101) is provided at the end of the main shaft (22), a discharge groove (6) is provided on the side of the machine body (1) away from the feed slide (17), a discharge port (16) is provided at the bottom of one end of the machine body (1), a transmission chain (4) is provided between the main sprocket (2) and the secondary sprocket (3), a plurality of push plates (5) are fixed on the transmission chain (4), a perforated plate (10) is provided at the bottom of the shallow groove of the machine body (1), an upper leakage hole (31) is provided at the top of the perforated plate (10), and a liquid leakage groove (12) is provided below the perforated plate (10).

3. The energy-saving lump coal sorting equipment according to claim 2 is characterized in that: The leakage trough (12) is provided with a leakage plate (28) which can move leftward and rightward, and the top of the leakage plate (28) is provided with a lower leakage hole (30), and the upper leakage hole (31) on the top of the orifice plate (10) and the lower leakage hole (30) on the top of the leakage plate (28) are arranged alternately.

4. The energy-saving lump coal sorting equipment according to claim 3 is characterized in that: A traction assembly is arranged on both sides of the leakage plate (28), and the traction assembly includes a traction cloth (25) connected to both ends of the leakage plate (28), and a mounting shaft (29) is arranged at the extended end of the traction cloth (25). Through holes (23) are provided on the front surface and the rear surface of the bottom end of the body (1), and the traction assembly also includes a sealing box (19) arranged on one side of the through hole (23), and a sealing track (18) is fixed on the top of the sealing box (19), and a mounting seat (20) is fixed on the top of the sealing track (18).

5. The energy-saving lump coal sorting equipment according to claim 4 is characterized in that: A sliding groove is provided inside the sealing track (18), and the extended end of the traction cloth (25) passes through the through hole (23) and the sealing box (19) and then extends into the mounting seat (20).

6. The energy-saving lump coal sorting equipment according to claim 5 is characterized by: The mounting seat (20) is provided with a mounting groove, the mounting shaft (29) is arranged in the mounting groove and can rotate in the mounting groove, a stepping motor (21) is fixed to one end of the mounting seat (20), and the output shaft of the stepping motor (21) is connected to the mounting shaft (29).

7. The energy-saving lump coal sorting equipment according to claim 6 is characterized by: A first shaft (11) is disposed inside the machine body (1) on one side of the through hole (23), a second shaft (26) is disposed inside the sealing box (19), the first shaft (11) and the second shaft (26) have the same length, and the traction cloth (25) is in contact with the outer walls of the first shaft (11) and the second shaft (26).

8. The energy-saving lump coal sorting equipment according to claim 3 is characterized by: A liquid storage box (8) is provided on one side of the bottom of the machine body (1), a fixing plate (9) is provided between the liquid storage box (8) and the machine body (1), the fixing plate (9) and the machine body (1) are fixedly connected by bolts, and a waste discharge pipe (7) is inserted into the interior of the liquid storage box (8).

9. The energy-saving lump coal sorting equipment according to claim 4 is characterized in that: The outer wall of the sealing box (19) is symmetrically provided with two sealing plates (27), the sealing plates (27) are fixedly connected to the body (1) by bolts, and grooves (24) are provided on both side walls of the body (1), and the sealing plates (27) match the grooves (24).

10. The energy-saving lump coal sorting equipment according to claim 2 is characterized in that: A slide plate (13) is provided inside the machine body (1) at one end of the orifice plate (10), a material guide plate (14) is fixed to one end of the slide plate (13), and one end of the material guide plate (14) extends to a material discharge port (16) and is fixed to a chute plate (15).

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