Adjustable coal particle vibration screening and splitting device

Abstract

The invention discloses an adjustable coal particle vibration screening and splitting device, and relates to the technical field of coal optionality. Comprising a screening supporting frame, a screening top bin arranged above the screening supporting frame, a screening division pipeline fixedly connected with the bottom of the screening top bin, a discharging bottom pipe connected with the bottom of the screening division pipeline, a material distribution pipe part connected with one side of the discharging bottom pipe and a material storage box arranged below the tail end of the material distribution pipe part. The invention further comprises. The vibrating sieve plate part which is originally in a horizontal state can be driven by the electric push rod to rotate to the inverted-V-shaped structure, particles meeting the size requirement penetrate through the vibrating sieve plate part to enter the lower portion to be discharged, larger coal gangue particles can rapidly move to the two sides along the inclined face of the vibrating sieve plate part, and therefore rapid vibrating screening of the coal particles is completed; according to the shaftless screen drum, the vibrating screen plate part has a large vibrating screening area, meanwhile, rapid discharging can be completed through deformation, and compared with a traditional shaftless screen drum, the shaftless screen drum is smaller in occupied size.

Description

Technical Field

[0001] The invention belongs to the technical field of coal selectivity, and in particular relates to an adjustable coal particle vibration screening and reduction device. Background Art

[0002] Coal is a solid combustible organic rock, mainly formed by plant remains through biochemical reactions, burial and then geological transformation. It is commonly known as coal. Coal has high calorific value. The calorific value of standard coal is 7000 kcal / kg. Moreover, coal reserves are abundant on the earth, widely distributed, and generally easy to mine. Therefore, it is widely used as a fuel in various industrial production. In addition to being used as a fuel to obtain heat and kinetic energy, it is more important to produce coke for metallurgy and artificial petroleum, that is, coal tar, a liquid product of low-temperature dry distillation of coal. After chemical processing, thousands of chemical products can be produced from coal, so it is also a very important chemical raw material. For example, many medium and small nitrogen fertilizer plants in my country use coal as raw material to produce fertilizers. Coal in my country is widely used as a raw material for many industries.

[0003] Coal selectivity is the main basis for coal preparation process research and coal preparation plant design. Therefore, the purpose of studying coal selectivity is to reasonably select coal preparation methods, coal preparation processes, and determine product structure, so as to rationally utilize coal resources. In order to accurately evaluate coal selectivity, coal preparation workers at home and abroad have been continuously studying selectivity assessment methods.

[0004] In the process of coal selectivity, due to the large content of coal gangue particles with a particle size of less than 13mm, it is impossible to analyze the entire amount. It is necessary to use a reduction device to take some representative samples for measurement and then calculate them proportionally. Before screening by the locking device, the coal gangue particles larger than 13mm need to be screened and discharged. The vibration screening method is generally used. In order to improve efficiency, the vibrating screen is generally placed at an angle so that the coal gangue particles move downward along the slope during vibration, or a shaftless screen drum is used for screening. This type of screening structure often has a large volume to achieve screening and discharge in one, so it occupies a large space and is inconvenient to use with the reduction device. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides an adjustable coal particle vibration screening and reduction device, which can effectively solve the problems of the prior art.

[0006] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is an adjustable coal particle vibration screening and shrinking device, comprising: a screening support frame, a screening top bin arranged above the screening support frame, and a screening and shrinking pipeline fixedly connected to the bottom of the screening top bin;

[0008] Also includes:

[0009] The vibrating screen plate portion is arranged inside the screening top bin, and one end of the vibrating screen plate portion is provided with a screen plate connecting portion that slides longitudinally along the surface of the screening top bin, the vibrating screen plate portion and the screen plate connecting portion are connected by a screen plate plugging rod portion and a screen plate connecting block, and the screen plate connecting block and the screen plate plugging rod portion are rotatably connected by a screen plate rotating shaft, and a sliding hole that allows the screen plate plugging rod portion to slide is provided inside the sieve plate connecting portion, and a center connecting plate is attached to the end of the vibrating screen plate portion away from the sieve plate connecting block, and a connecting plate bottom groove is provided at the bottom of the center connecting plate, and a connecting plate bottom groove is provided, and a tensile connecting block is connected to the groove of the connecting plate bottom groove through a rotating shaft;

[0010] The lifting connecting column is fixed on the top of the stretching connecting block, and the lifting connecting column extends upward through the central part of the two sets of central connecting plates and is fixed with a connecting column straight plate. A sliding groove is provided on the surface of the connecting column straight plate, and the lifting vertical rod part is interactively connected in the sliding groove. An electric push rod is fixed in the cavity of the screening top bin through a bracket, and the top of the lifting vertical rod part is connected to the output end of the electric push rod;

[0011] The driving motor is fixed on the inner wall of the screening top bin, the output end of the driving motor is connected to the eccentric vibration structure, and the other end of the eccentric vibration structure is connected to the sieve plate connection part;

[0012] The temporary storage baffle is fixedly arranged at the bottom of the vibrating screen plate portion, and a secondary screen plate is arranged below the temporary storage baffle.

[0013] Furthermore, a passive crossbar is fixed on the side of the secondary screen plate, a passive vertical rod extending upward is fixed at the front end of the passive crossbar, and trigger bumps distributed at equal intervals in the longitudinal direction are fixed at one end of the passive vertical rod close to the screen plate rotation axis.

[0014] Furthermore, a sieve plate support sleeve is fixedly provided at the bottom of the secondary sieve plate, the bottom of the sieve plate support sleeve is slidably connected to the support sleeve column, the bottom of the support sleeve column is fixedly provided with a sleeve column reinforcement cross plate, and one end of the sleeve column reinforcement cross plate is fixedly connected to the inner wall of the screening top bin.

[0015] Furthermore, a sample collection bin is provided below the secondary sieve plate, and a sieve plate bottom hole adapted to the sample collection bin opening is opened at the bottom of the secondary sieve plate, and the side wall of the sample collection bin is fixedly connected to the inner wall of the screening and reduction pipe through a bracket.

[0016] Furthermore, the temporary storage baffle is L-shaped, and the horizontal plate of the temporary storage baffle is parallel to the vibrating screen plate portion, and the end of the temporary storage baffle extends to one side of the top of the inclined surface of the secondary screen plate.

[0017] Furthermore, a miscellaneous material opening is provided on the side wall of the screening top bin, a cover connecting rod is fixed to the side wall of the lifting upright portion, the other end of the cover connecting rod is fixed with a closed cover portion that moves longitudinally above the miscellaneous material opening, one end of the vibrating screen plate portion is connected to the screen plate connecting block through a screen plate reinforcement plate, and the other end of the vibrating screen plate portion is connected to the center connecting plate by bolts.

[0018] Furthermore, a centralized collection bin is fixed at the bottom of the sample collection bin, a distribution storage bin is provided below the centralized collection bin, the bottom of the distribution storage bin is fixed to the top of the discharge bottom pipe, and the center of the distribution storage bin is provided with a distribution conical plate located at the center of the bottom opening of the centralized collection bin.

[0019] Furthermore, a plurality of groups of dividing side plates distributed in an annular array are fixed in the cavity of the material distribution storage bin, and the bottom of the material distribution conical plate is fixed at the intersection with the dividing side plates.

[0020] Furthermore, a petal annular rotating structure is provided in the cavity of the discharge bottom pipe, and the front end of the distribution pipe portion is connected to the discharge bottom pipe.

[0021] Furthermore, a partition side bottom plate is fixedly provided at the bottom of two adjacent groups of partition side plates, and the connection between the material distribution pipe portion and the discharge bottom pipe is located between the two groups of partition side bottom plates.

[0022] The present invention has the following beneficial effects:

[0023] The present invention places the screening top bin above the screening reduction pipe, and a large amount of coal gangue particles can be put into the screening top bin, and the vibrating screen plate part inside the screening top bin performs vibration screening. After the vibration screening, the vibrating screen plate part, which was originally in a horizontal state, can be rotated to an inverted V-shaped structure by the driving of the electric push rod. The particles that meet the size pass through the vibrating screen plate part and enter the bottom for discharge, while the coal gangue particles with larger particles can move quickly to both sides along the inclined surface of the vibrating screen plate part, thereby completing the rapid vibration screening of the coal particles. The vibrating screen plate part not only has a large vibration screening area, but can also complete rapid discharge through deformation. Compared with the traditional shaftless screen drum, it occupies a smaller volume and can be directly placed on the screening and reduction pipe for synchronous use. It is more convenient to use synchronously with the reduction device. At the same time, when the vibrating screen plate is horizontal and in the vibrating screening state, the miscellaneous material openings on both sides are closed due to the closed cover plate part to prevent the vibration from causing the coal gangue particles to be directly discharged from both sides, thereby improving the accuracy of the vibrating screening. At the same time, as the vibrating screen plate part deforms, the two sets of closed cover plate parts move upward synchronously, and then when the vibrating screen plate part rotates to the V-shaped miscellaneous material opening fully expanded, no manual or other electrical equipment assistance is required, and the structural design is simpler and more reasonable.

[0024] The present invention is designed with a vibrating screen plate part and a secondary screen plate for double screening. The vibrating screen plate part screens out coal gangue particles larger than 13mm particle size, and the secondary screen plate screens out coal gangue particles smaller than the expected setting, so that the coal gangue particles entering the centralized collection bin for subsequent sampling are in a smaller up and down floating degree, which is more beneficial to the subsequent selectivity of coal particles. In order to reduce the noise and power consumption of the entire equipment, the secondary screen plate is in a stationary state when the vibrating screen plate part is in a horizontal state. When the vibrating screen plate part is deformed and the coal gangue particles in the temporary storage baffle slide onto the inclined surface of the secondary screen plate, the lateral movement of the screen plate rotating shaft will extend into the gap of the triggering protrusion. As the screen plate rotating shaft vibrates, the passive vertical rod is driven to vibrate, and then the secondary screen plate is driven to vibrate and screen synchronously, thereby reducing the entire process. The secondary screen plate does not occupy power consumption when it is not working, and does not participate in vibration, which can reduce the noise of the entire equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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 creative work.

[0026] Figure 1 It is a schematic diagram of the present invention;

[0027] Figure 2 This is a cross-sectional view of the interior of the screening top bin of the present invention;

[0028] Figure 3 This is a bottom view of the rod insertion portion of the screen plate of the present invention;

[0029] Figure 4 This is a structural schematic diagram of the connection between the sieve plate inserting rod portion and the sieve plate connecting portion of the present invention;

[0030] Figure 5 This is a structural diagram of the driving motor of the present invention;

[0031] Figure 6 This is a structural diagram of the connection between the centralized collection bin and the material distribution storage bin of the present invention;

[0032] Figure 7 This is a cross-sectional view of the interior of the material storage bin of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the connection between the straight plate of the connecting column and the lifting upright part of the present invention;

[0034] Figure 9 This is a bottom view of the center-stabilizing connecting plate of the present invention;

[0035] Figure 10 This is a cross-sectional view of the bottom groove of the connecting plate of the present invention.

[0036] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0037] 1. Screening support frame; 2. Screening top bin; 3. Screening reduction pipe; 4. Discharge bottom pipe; 5. Material distribution pipe; 6. Storage box; 7. Weighing chassis; 8. Residual material collection bin; 9. Miscellaneous material opening; 10. Screen plate connection; 11. Vibrating screen plate; 12. Screen plate insertion rod; 13. Screen plate connection block; 14. Screen plate rotation axis; 15. Screen plate reinforcement plate; 16. Drive motor; 17. Eccentric vibration structure; 18. Temporary storage baffle; 19. Secondary screen plate; 20. Screen plate support sleeve; 21. Support sleeve column; 22. Sleeve column reinforcement Horizontal plate; 23. Passive horizontal bar; 24. Passive vertical bar; 25. Triggering protrusion; 26. Center connecting plate; 27. Connecting plate bottom groove; 28. Stretch connecting block; 29. Lifting connecting column; 30. Lifting vertical bar; 31. Connecting column straight plate; 32. Cover connecting rod; 33. Closing cover; 34. Electric push rod; 35. Bottom hole of sieve plate; 36. Sample collection chamber; 37. Centralized collection chamber; 38. Material distribution storage chamber; 39. Material distribution conical plate; 40. Partitioning side bottom plate; 41. Petal annular rotating structure; 42. Partitioning side plate. DETAILED DESCRIPTION

[0038] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0041] See also Figure 1-10 As shown, the present invention is an adjustable coal particle vibration screening and shrinking device, comprising: a screening support frame 1, a screening top bin 2 arranged above the screening support frame 1, a screening and shrinking pipe 3 fixedly connected to the bottom of the screening top bin 2, a discharge bottom pipe 4 connected to the bottom of the screening and shrinking pipe 3, a distribution pipe part 5 connected to one side of the discharge bottom pipe 4, and a storage box 6 arranged below the end of the distribution pipe part 5; the entire device is supported by the screening support frame 1, and the screening top bin 2 is filled with coal gangue particles for screening, and the screening and shrinking are completed by the screening top bin 2 and the screening and shrinking pipe 3. The coal gangue particles that do not move much are discharged from the distribution pipe 5 into the storage box 6 for storage, and a weighing chassis 7 is set at the bottom of the storage box 6 for weight detection. When the specified weight is reached, the hydraulic pushing structure at the bottom of the storage box 6 pushes the storage box 6 to rotate, so that the opening on the side of the storage box 6 discharges the coal gangue particle sample stored in the storage box 6. A conveyor belt is connected to one side of the storage box 6, so that the coal gangue particle sample proceeds to the next step along the conveyor belt, while the coal gangue that does not meet the expected particle size and the shrunken coal gangue particles fall along the discharge bottom pipe 4 into the residual material collection bin 8 for discharge.

[0042] The vibrating screen plate portion 11 is arranged inside the screening top bin 2, and two groups of vibrating screen plate portions 11 are arranged. The two groups of vibrating screen plate portions 11 are horizontally distributed on both sides of the center of the screening top bin 2. The two groups of vibrating screen plate portions 11 divide the internal space of the screening top bin 2 into two parts, an upper part and an lower part. The vibrating screen plate portion 11 is used to screen and filter the coal gangue particles. The side surfaces of the two groups of vibrating screen plate portions 11 are close to the inner wall of the screening top bin 2. One end of the vibrating screen plate portion 11 is provided with a sieve plate connecting portion 10 that slides longitudinally along the surface of the screening top bin 2. A longitudinal slide groove is opened inside the screening top bin 2 so that a part of the sieve plate connecting portion 10 is embedded in the longitudinal slide groove so that the sieve plate connecting portion 10 can move longitudinally. One end of the vibrating screen plate portion 11 close to the sieve plate connecting portion 10 is connected to the sieve plate connecting block 13, and the sieve plate connecting portion The sieve plate plug rod portion 12 is provided on both sides of the connecting block 13, wherein the sieve plate connecting block 13 and the sieve plate plug rod portion 12 are connected through the sieve plate rotating shaft 14, so that the sieve plate rotating shaft 14 can rotate, and the interior of the sieve plate connecting portion 10 is provided with a sliding hole that allows the sieve plate plug rod portion 12 to slide, that is, the sieve plate plug rod portion 12 can move in the sieve plate connecting portion 10 when connected to the sieve plate connecting block 13 and the vibrating sieve plate portion 11, and the other end of the vibrating sieve plate portion 11 is connected to the central connecting plate 26, and a rectangular connecting plate bottom groove 27 is provided at the bottom of the central connecting plate 26, and a group of stretching connecting blocks 28 are connected by a rotating shaft in the groove of the connecting plate bottom groove 27, and a columnar lifting connecting column 29 is fixed on the top of the stretching connecting block 28, so that the lifting connecting column 2 9 passes through the two sets of center connecting plates 26 and passes upward. When the lifting connecting column 29 is dragged and moved upward, the vibration screen plate parts 11 on both sides are rotated by stretching the connection of the connecting block 28, so that the two sets of vibration screen plate parts 11 that were originally in a horizontal state have an inclined surface. As the vibration screen plate part 11 tilts, the screen plate plug part 12 at one end of the vibration screen plate part 11 will be pulled out from the sliding hole at the screen plate connecting part 10. At the same time, the screen plate connecting block 13 and the screen plate rotating shaft 14 rotate, and finally the vibration screen plate part 11 rotates to form an inverted V-shaped structure. The two sets of screen plate plug parts 12 are not completely pulled out from the sliding hole, and the vibration screen plate part 11 can still be kept in a stable state. The small coal gangue particles that meet the requirements pass through the vibration screen plate part 11 downward, while the large coal gangue particles are retained on the vibration screen On the plate portion 11, as the vibrating screen plate portion 11 rotates, the larger coal gangue particles eventually move to the bottom along the inclined surface of the vibrating screen plate portion 11, and the side of the screening top bin 2 is provided with a miscellaneous material opening 9 for discharging coal gangue particles, and a connecting column straight plate 31 is fixed to the top of the lifting connecting column 29, wherein a longitudinal chute is provided on the surface of the connecting column straight plate 31, and the bottom of the lifting upright rod portion 30 extends into the chute, so that the lifting upright rod portion 30 is connected to the top of the connecting column straight plate 31, and the top of the lifting upright rod portion 30 is connected to the output end of the electric push rod 34, and the electric push rod 34 is fixed by the bracket on the inner wall of the screening top bin 2, so that the electric push rod 34 is suspended above the central connecting plate 26, and the electric push rod 34 is used as a driving member, and the electric push rod 34 drives the lifting connecting column 29 to move upward.The vibrating screen plate portion 11 is transformed from a straight line distribution to a V shape to achieve material discharge, and vice versa, it rotates to a straight line distribution to achieve the vibrating screen plate portion 11 to screen the coal gangue particles. Two sets of cover connecting rods 32 extending outside the screening top bin 2 are fixed on the side of the lifting upright portion 30, wherein the closing cover portion 33 is attached to the outer wall of the screening top bin 2, wherein the closing cover portion 33 can move longitudinally on the surface of the screening top bin 2, and the end of the cover connecting rod 32 is fixed to the closing cover portion 33. When the vibrating screen deck 11 is in a straight line, the closing cover 33 closes at the material opening 9 to prevent gangue particles from pouring into the screening top bin 2 and being discharged directly from the material opening 9. After screening, the cover connecting rod 32 moves synchronously with the lifting rod 30. Lifting the upright rod 30 upward moves the closing cover 33 upward, expanding the material opening 9. This allows the gangue particles that slide off the surface of the vibrating screen deck 11 to be discharged through the material opening 9 and out of the screening top bin 2.

[0043] One end of the vibrating screen plate portion 11 and the screen plate connecting block 13 are connected by a screen plate reinforcing plate 15. Screw holes are set at both ends of the screen plate reinforcing plate 15 and are respectively connected to the vibrating screen plate portion 11 and the screen plate connecting block 13 by screws. The other end of the vibrating screen plate portion 11 is connected to the center connecting plate 26 by bolts. Therefore, the vibrating screen plate portion 11 can be disassembled and adjusted according to actual screening needs. A driving motor 16 is fixed on the inner wall of the screening top bin 2, so that the output of the driving motor 16 is connected to the eccentric vibration structure 17. The eccentric vibration structure 17 is driven by the driving motor 16 and the top sieve plate connecting part 10 of the eccentric vibration structure 17 is connected, so that the sieve plate connecting part 10 can drive the vibrating screen plate portion 11 to vibrate. The bottom of the vibrating screen plate portion 11 is fixed with an L-shaped The temporary storage baffle 18 of the structure, wherein the transverse axis of the temporary storage baffle 18 is parallel to the vibrating screen plate portion 11, and when the vibrating screen plate portion 11 is in a horizontal state, the particles after vibration screening enter the temporary storage baffle 18 along the vibrating screen plate portion 11 to be stored above the temporary storage baffle 18, and an inclined secondary screen plate 19 is also provided below the temporary storage baffle 18, wherein the secondary screen plate 19 is not connected to the temporary storage baffle 18 and the vibrating screen plate portion 11, and a screen plate support sleeve 20 is fixedly provided at the bottom of the secondary screen plate 19, and a supporting sleeve column 21 is provided on the bottom sliding sleeve of the screen plate support sleeve 20, and a sleeve column reinforcement cross plate 22 is fixedly provided at the bottom of the support sleeve column 21, so that the sleeve column reinforcement cross plate 22 is fixed to the inner wall of the screening top bin 2 to maintain the installation of the secondary screen plate 19, and the side end of the screen plate rotating shaft 14 extends to one side through it. A passive cross bar 23 is fixed to the side of the secondary sieve plate 19, and a passive vertical rod 24 extending upward is fixed to the end of the passive cross bar 23, and a plurality of trigger protrusions 25 distributed at longitudinal intervals are fixed to the end face of the passive vertical rod 24 close to the sieve plate rotating shaft 14. When the vibrating sieve plate portion 11 rotates to pull the sieve plate insertion rod portion 12 out of the sieve plate connecting portion 10, the sieve plate rotating shaft 14 is driven to move synchronously, and the sieve plate rotating shaft 14 moves and enters the gap of the trigger protrusion 25. Since the sieve plate rotating shaft 14 is in a continuous vibration state during the whole process, when the sieve plate rotating shaft 14 is combined with the trigger protrusion 25, the vibration of the sieve plate rotating shaft 14 is transmitted to the trigger protrusion 25, thereby causing the passive vertical rod 24 and the secondary sieve plate 19 to vibrate, and as the vibrating sieve plate portion 11 rotates and the sieve plate insertion rod portion 12 is pulled out from the sieve plate connecting portion 10, the sieve plate rotating shaft 14 is driven to move synchronously, and after the sieve plate rotating shaft 14 moves, it will enter the gap of the trigger protrusion 25. Since the sieve plate rotating shaft 14 is in a continuous vibration state during the whole process, when the sieve plate rotating shaft 14 is combined with the trigger protrusion 25, the vibration of the sieve plate rotating shaft 14 is transmitted to the trigger protrusion 25, thereby causing the passive vertical rod 24 and the secondary sieve plate 19 to vibrate. 1, after the temporary baffle 18 is tilted, the stored coal gangue particles are tilted and discharged onto the secondary sieve plate 19, and the end of the temporary baffle 18 extends to the top side of the inclined surface of the secondary sieve plate 19, that is, the coal gangue particles are bought to the upper position of the secondary sieve plate 19 and slide along the inclined surface of the secondary sieve plate 19. At the same time, with the vibration of the secondary sieve plate 19, the screened coal gangue particles are screened again, so that smaller coal gangue particles pass through the secondary sieve plate 19 and fall down, and the coal gangue particles that meet the expected size move along the inclined surface of the secondary sieve plate 19 to the sample collection bin 36 below the secondary sieve plate 19. The lower end of the secondary sieve plate 19 is provided with a sieve plate bottom hole 35 that is adapted to the port of the central connecting plate 26, so that the coal gangue particles can fall into the sample collection bin 36 as evenly as possible.It is worth noting that the screening top bin 2 has a relatively thick wall and the side walls of the screening top bin 2 are hollow, so that the movement of the screen plate rotating shaft 14, the passive crossbar 23, the passive vertical rod 24 and the triggering protrusion 25 are all carried out within the hollow side walls of the screening top bin 2, without affecting the normal filtration of the vibrating screen plate portion 11.

[0044] A partition plate is provided on the periphery between the secondary sieve plate 19 and the sample collection chamber 36, which is used to retain the particles screened by the secondary sieve plate 19 on the partition plate to avoid affecting subsequent sampling. A closable and expandable opening is provided on the side of the screening and reduction pipe 3, through which the smaller particles stored on the partition plate can be discharged from the opening along the partition plate. A centralized collection chamber 37 is fixedly provided at the bottom of the sample collection chamber 36, and the outer wall of the centralized collection chamber 37 is connected to the screening and reduction pipe 3 by a bracket to maintain the stability of the centralized collection chamber 37. A distribution storage chamber 38 is provided below the centralized collection chamber 37, and the bottom of the distribution storage chamber 38 is fixed to the top of the discharge bottom pipe 4. The center of the distribution storage chamber 38 is provided with a distribution conical plate 39 located at the center of the bottom of the centralized collection chamber 37, and the top of the distribution storage chamber 38 is connected to the bottom of the screening and reduction pipe 3, wherein a plurality of groups of dividing side plates 42 distributed in an annular array are fixed in the cavity of the distribution storage chamber 38, and the intersection of the bottom of the distribution conical plate 39 and the dividing side plate 42 The material distribution cone plate 39 is fixed at the bottom center of the centralized collection bin 37, and the coal gangue particles discharged from the centralized collection bin 37 fall evenly into the material distribution storage bin 38 along the material distribution cone plate 39. The material distribution storage bin 38 is divided into multiple groups of identical spaces by the partition side plates 42, wherein the bottoms of two adjacent groups of partition side plates 42 are fixed with partition side bottom plates 40, and the bottoms of the partition side bottom plates 40 extend to the top of the petal annular rotating structure 41, and the petal annular rotating structure 41 is provided in the discharge bottom pipe 4. The petal-shaped rotating structure 41 is used to intercept the coal gangue particles falling from above. The connection between the distribution pipe part 5 and the discharge bottom pipe 4 is located between the two sets of partition side bottom plates 40. The front end of the distribution pipe part 5 is connected with the discharge bottom pipe 4. The coal gangue particles falling between the partition side bottom plates 40 are discharged from the distribution pipe part 5 into the storage box 6 for collection. After the specified weight is stored in the storage box 6, the petal-shaped annular rotating structure 41 rotates to make all the accumulated coal gangue particles fall into the residual material collection bin 8 through the discharge bottom pipe 4.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0046] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An adjustable coal particle vibration screening and reduction device, comprising: A screening support frame (1), a screening top bin (2) arranged above the screening support frame (1), and a screening reduction pipe (3) fixedly connected to the bottom of the screening top bin (2); It is characterized by further comprising: The vibrating screen plate portion (11) is arranged inside the screening top bin (2), and one end of the vibrating screen plate portion (11) is provided with a screen plate connecting portion (10) that slides longitudinally along the surface of the screening top bin (2). The vibrating screen plate portion (11) and the screen plate connecting portion (10) are connected via a screen plate inserting rod portion (12) and a screen plate connecting block (13), and the screen plate connecting block (13) and the screen plate inserting rod portion (12) are rotationally connected via a screen plate rotating shaft (14); A sliding hole is provided inside the sieve plate connecting portion (10) to allow the sieve plate inserting rod portion (12) to slide, and a center connecting plate (26) is attached to one end of the vibrating sieve plate portion (11) away from the sieve plate connecting block (13); A connecting plate bottom groove (27) is provided at the bottom of the central connecting plate (26), and a stretching connecting block (28) is connected in the groove of the connecting plate bottom groove (27) via a rotating shaft.

2. The adjustable coal particle vibration screening and reduction device according to claim 1 is characterized in that: The lifting connection column (29) is fixed on the top of the stretching connection block (28), and the lifting connection column (29) extends upward through the center of the two sets of center connection plates (26) and is fixed with a connection column straight plate (31); A chute is provided on the surface of the connecting column straight plate (31), and a lifting upright rod portion (30) is interactively connected in the chute. An electric push rod (34) is fixed in the cavity of the screening top bin (2) through a bracket, and the top of the lifting upright rod portion (30) is connected to the output end of the electric push rod (34).

3. The adjustable coal particle vibration screening and reduction device according to claim 1 is characterized in that: A driving motor (16) is fixedly mounted on the inner wall of the screening top bin (2); an output end of the driving motor (16) is connected to an eccentric vibration structure (17); and the other end of the eccentric vibration structure (17) is connected to the sieve plate connecting portion (10); A temporary storage baffle (18) is fixedly arranged at the bottom of the vibrating screen plate portion (11), and a secondary screen plate (19) is arranged below the temporary storage baffle (18); A passive crossbar (23) is fixedly provided on the side of the secondary sieve plate (19), a passive vertical rod (24) extending upward is fixedly provided at the front end of the passive crossbar (23), and triggering protrusions (25) distributed at equal intervals in the longitudinal direction are fixedly provided at one end of the passive vertical rod (24) close to the sieve plate rotation axis (14).

4. The adjustable coal particle vibration screening and reduction device according to claim 1 is characterized in that: A sieve plate support sleeve (20) is fixedly provided at the bottom of the secondary sieve plate (19), the bottom of the sieve plate support sleeve (20) is slidably connected to a support sleeve column (21), a sleeve column reinforcement transverse plate (22) is fixedly provided at the bottom of the support sleeve column (21), and one end of the sleeve column reinforcement transverse plate (22) is fixedly connected to the inner wall of the screening top bin (2).

5. The adjustable coal particle vibration screening and reduction device according to claim 1 is characterized in that: A sample collecting chamber (36) is provided below the secondary sieve plate (19), and a sieve plate bottom hole (35) adapted to the opening of the sample collecting chamber (36) is provided at the bottom of the secondary sieve plate (19). The side wall of the sample collecting chamber (36) is fixedly connected to the inner wall of the screening and shrinking pipe (3) through a bracket. The temporary storage baffle (18) is L-shaped, and the horizontal plate of the temporary storage baffle (18) is parallel to the vibrating sieve plate portion (11). The end of the temporary storage baffle (18) extends into one side of the top of the inclined surface of the secondary sieve plate (19).

6. The adjustable coal particle vibration screening and reduction device according to claim 1, characterized in that: A miscellaneous material opening (9) is formed on the side wall of the screening top bin (2), a cover plate connecting rod (32) is fixed to the side wall of the lifting upright rod portion (30), and a closing cover plate portion (33) is fixed to the other end of the cover plate connecting rod (32) and moves longitudinally above the miscellaneous material opening (9). One end of the vibrating screen plate portion (11) is connected to the screen plate connecting block (13) through a screen plate reinforcing plate (15), and the other end of the vibrating screen plate portion (11) is connected to the central connecting plate (26) through bolts.

7. The adjustable coal particle vibration screening and reduction device according to claim 1, characterized in that: A centralized collection bin (37) is fixedly provided at the bottom of the sample collection bin (36), a distribution storage bin (38) is provided below the centralized collection bin (37), the bottom of the distribution storage bin (38) is fixed to the top of the discharge bottom pipe (4), and a distribution conical plate (39) is provided at the center of the bottom opening of the centralized collection bin (37) at the center of the distribution storage bin (38).

8. The adjustable coal particle vibration screening and reduction device according to claim 7, characterized in that: A plurality of dividing side plates (42) distributed in an annular array are fixed in the cavity of the material distribution storage bin (38), and the bottom of the material distribution conical plate (39) is fixed at the intersection with the dividing side plates (42).

9. The adjustable coal particle vibration screening and reduction device according to claim 8, characterized in that: A petal annular rotating structure (41) is provided in the cavity of the discharge bottom pipe (4), and the front end of the distribution pipe portion (5) is communicated with the discharge bottom pipe (4).

10. The adjustable coal particle vibration screening and reduction device according to claim 9, characterized in that: The bottoms of two adjacent groups of partition side plates (42) are fixed with partition side bottom plates (40), and the connection between the material distribution pipe portion (5) and the material discharge bottom pipe (4) is located between the two groups of partition side bottom plates (40).

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