Fracturing propping agent quartz sand screening device

Abstract

The invention belongs to the technical field of quartz sand screening equipment, and particularly relates to a fracturing propping agent quartz sand screening device which comprises a screening chamber, a feeding cylinder is arranged on the screening chamber, and a feeding mechanism is arranged on the feeding cylinder; the feeding mechanism comprises a material uniformizing structure arranged at the top of the feeding cylinder, a material distributing structure is arranged below the material uniformizing structure, and the material uniformizing structure is connected with a synchronous structure for driving the material distributing structure to act; a feeding structure for driving quartz sand to enter the screening chamber is arranged below the distributing structure, and a reinforcing plate matched with the feeding structure is fixedly connected into the screening chamber; the problems that an existing fracturing propping agent quartz sand screening device is poor in feeding uniformity and large in impact force on a screening net are effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of quartz sand screening equipment, and in particular relates to a fracturing proppant quartz sand screening device. Background Art

[0002] Quartz sand is the most common and fundamental type of natural proppant used in hydraulic fracturing operations. Its primary function is to prop up newly formed fractures in the rock formation after being carried by high-pressure fluid during the fracturing process. When the pressure is released, it supports the newly formed fractures, keeping them open. This provides a highly conductive channel for oil and gas flow, thereby increasing oil and gas production.

[0003] Quartz sand screening equipment is a critical process device for ensuring that fracturing proppants meet specified particle size standards and maintain their conductivity. Its core function is to utilize multiple layers of vibrating screens, using precisely controlled vibrations to efficiently and accurately separate the raw sand into specific particle sizes to meet the fracturing requirements of different formations. The equipment's performance, reliability, and screening accuracy are crucial to proppant quality and production costs.

[0004] During the feeding process of the quartz sand screening device, the following technical problems exist: 1. The problem of uneven distribution of quartz sand feeding: During the feeding process, quartz sand is usually concentrated in a local area of the screening net to form a "material pile", and there is little or even no material in other areas of the screening net; causing the screening net near the local area to be subjected to huge impact and friction, and the wear rate is much higher than that of other areas; 2. The problem that quartz sand feeding easily causes a greater impact on the top screening net: During the feeding process, quartz sand directly falls freely on the top screening net, causing impact on the screening net, which can easily cause serious damage to the screening net. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a fracturing proppant quartz sand screening device, which effectively solves the problems of poor feeding uniformity and large impact force on the screening net of the existing fracturing proppant quartz sand screening device.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a fracturing proppant quartz sand screening device, comprising a screening chamber, a feeding barrel provided on the screening chamber, and a feeding mechanism provided on the feeding barrel; the feeding mechanism comprises a material distribution structure provided on the top of the feeding barrel, a material distribution structure provided below the material distribution structure, and a synchronous structure for driving the material distribution structure to move is connected to the material distribution structure; a feeding structure for driving quartz sand into the screening chamber is provided below the material distribution structure, and a reinforcing plate that cooperates with the feeding structure is fixedly connected to the screening chamber.

[0007] Furthermore, the screening chamber is provided with multiple layers of screening mesh for screening quartz sand, and the top surface of the topmost layer of the screening mesh is aligned with the top surface of the reinforcing plate; the end of the screening chamber away from the feeding barrel is provided with multiple discharge ports corresponding to the multiple layers of the screening mesh, and an inverted frustum-shaped feeding port is fixed to the top of the feeding barrel.

[0008] Furthermore, a frame is provided below the screening chamber, a spring cooperating with the screening chamber is provided on the frame, and a vibration motor is fixedly connected to the screening chamber.

[0009] Furthermore, the material balancing structure includes several material balancing plates evenly distributed along the width direction of the screening chamber and rotatably connected to the feeding barrel, and several material balancing teeth are evenly distributed on several of the material balancing plates; several of the material balancing plates are coaxially fixed with an upper rotating rod, and the upper rotating rod is rotatably connected to an upper synchronization rod, and several of the upper rotating rods are rotatably connected to the upper synchronization rod.

[0010] Furthermore, a driving motor is fixed to the feeding barrel, and an output end of the driving motor is connected to an input rod; a traction rod is rotatably connected to the input rod, and one of the material balancing plates is coaxially fixed to the output rod, and the other end of the output rod is rotatably connected to the traction rod.

[0011] Furthermore, a cleaning motor is fixedly connected to the feeding barrel, and a lead screw is connected to the output end of the cleaning motor; a sliding frame is screwed onto the lead screw, and a guide rod for guiding the sliding frame is fixedly connected to the feeding barrel; upper cleaning teeth are provided between adjacent material-distributing teeth, and several of the upper cleaning teeth are fixedly connected to the sliding frame.

[0012] Furthermore, the material dividing structure includes several material dividing components evenly distributed along the width direction of the screening chamber, and several of the material dividing components include a pair of material dividing plates that are rotatably connected to the feeding barrel and rotate in opposite directions; a pair of the material dividing plates are coaxially fixed with synchronous wheels, and the pair of synchronous wheels are engaged with each other; one of the material dividing plates of several of the material dividing components is coaxially fixed with a lower rotating rod, and the lower rotating rod is rotatably connected to a lower synchronous rod, and several of the lower rotating rods are rotatably connected to the lower synchronous rod.

[0013] Furthermore, the synchronization structure includes a connecting plate coaxially fixed to the material distribution plate, and a driving ring gear is fixed to the connecting plate; a driving wheel rotatably connected to the feeding barrel and engaged with the driving ring gear, and a crank is fixed to the driving wheel; a connecting rod is rotatably connected to the crank, and a rocker is rotatably connected to the connecting rod, and the other end of the rocker is coaxially fixed to the material distribution plate.

[0014] Furthermore, the feeding structure includes a feeding motor fixed to the feeding barrel, and the output end of the feeding motor is connected to a feeding shaft arranged along the width direction of the screening chamber; the feeding shaft has multiple groups of feeding components evenly distributed along the circumference, and the multiple groups of feeding components each include a number of feeding teeth evenly distributed along the axial direction of the feeding shaft; the screening chamber is provided with an arc-shaped portion connected to the feeding barrel at one end close to the feeding barrel, and the arc-shaped portion is aligned with the reinforcing plate at the end away from the feeding barrel.

[0015] Furthermore, a plurality of lower cleaning teeth evenly distributed along the axial direction of the feeding shaft are fixedly connected to one side of the feeding cylinder away from the arc portion. The cross section of the lower cleaning teeth is triangular and the lower cleaning teeth are arranged along the radial direction of the feeding shaft.

[0016] Compared with the prior art, the advantages and beneficial effects of the present invention are: 1. When the present invention is in use, the quartz sand in the feeding barrel is driven to flow in the width direction of the screening chamber by the arranging of the arranging plate and the arranging teeth, so that the quartz sand flows downward evenly; in addition, the arranging of the dividing assembly, the synchronous wheel and the dividing plate makes the quartz sand flow between adjacent dividing assemblies under the action of the dividing plates of adjacent dividing assemblies, so that the quartz sand is evenly divided into several piles along the width direction of the screening chamber and flows toward the feeding teeth; under the action of the feeding teeth and the flow of quartz sand, the several piles of quartz sand are mixed with each other, so that the quartz sand is evenly arranged in the feeding barrel, so as to improve the uniformity of the quartz sand on the screening net.

[0017] 2. When the present invention is in use, through the arrangement of the feeding motor, the feeding shaft, the feeding teeth, the arc-shaped portion, and the reinforcing plate, under the action of the feeding motor, the feeding shaft, the feeding teeth, and the arc-shaped portion, the quartz sand flows along the circumference to the reinforcing plate, and then flows to the screening net through the reinforcing plate, which can effectively avoid the impact of the quartz sand on the screening net and improve the service life of the screening net. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a first axonometric drawing of the present invention; Figure 2 is a second axonometric drawing of the present invention; Figure 3 It is a first axonometric view of the feeding mechanism of the present invention; Figure 4 This is a second axonometric view of the feeding mechanism of the present invention; Figure 5 For the present invention Figure 3 A magnified schematic diagram of area A in the middle; Figure 6 Schematic diagram of the structure of the material uniformity structure in the present invention; Figure 7 Schematic diagram of the coordination of the drive motor, input rod, traction rod, output rod and other structures in the present invention; Figure 8Schematic diagram of the cooperation state of the sliding frame, upper cleaning teeth, screw rod and other structures in the present invention; Figure 9 Schematic diagram of the structure of the material distribution structure in the present invention; Figure 10 It is a structural schematic diagram of the feeding structure in the present invention; In the figure: 1. frame, 2. spring, 3. screening chamber, 4. discharge port, 5. feeding barrel, 6. feeding port, 7. feeding motor, 8. vibration motor, 9. arc-shaped part, 10. reinforcement plate, 11. material balancing tooth, 12. dividing plate, 13. feeding tooth, 14. upper cleaning tooth, 15. cleaning motor, 16. screw, 17. guide rod, 18. lower cleaning tooth, 19. synchronous wheel, 20. connecting plate, 21. driving ring gear, 22. driving wheel, 23. crank, 24. connecting rod, 25. rocker, 26. driving motor, 27. upper rotating rod, 28. upper synchronous rod, 29. input rod, 30. traction rod, 31. output rod, 32. sliding frame, 33. lower rotating rod, 34. lower synchronous rod. DETAILED DESCRIPTION

[0019] A fracturing proppant quartz sand screening device, such as Figure 1-10 As shown, it includes a screening chamber 3, a feeding barrel 5 is provided on the screening chamber 3, and a feeding mechanism is provided on the feeding barrel 5; the feeding mechanism includes a material distribution structure provided on the top of the feeding barrel 5, a material separation structure is provided below the material distribution structure, and a synchronous structure for driving the material separation structure to move is connected to the material distribution structure; a feeding structure for driving quartz sand into the screening chamber 3 is provided below the material separation structure, and a reinforcing plate 10 that cooperates with the feeding structure is fixedly connected to the screening chamber 3.

[0020] When the present invention is in use, quartz sand enters the screening chamber 3 through the feeding barrel 5 and the feeding mechanism; specifically, the quartz sand is evenly dropped into the feeding structure by cooperating with the material distribution structure, and the quartz sand flows to the reinforcing plate 10 under the action of the feeding structure to avoid the quartz sand from impacting the screening net and affecting the service life of the screening net.

[0021] Furthermore, if Figure 1 and Figure 2 As shown, the screening chamber 3 is provided with multiple layers of screening mesh for screening quartz sand, and the top surface of the uppermost layer of the screening mesh is aligned with the top surface of the reinforcing plate 10; the screening chamber 3 is provided with multiple discharge ports 4 corresponding to the multiple layers of the screening mesh at one end away from the feeding barrel 5, and an inverted frustum-shaped feeding port 6 is fixed to the top of the feeding barrel 5; a frame 1 is provided below the screening chamber 3, and a spring 2 cooperating with the screening chamber 3 is provided on the frame 1, and a vibration motor 8 is fixed to the screening chamber 3.

[0022] When the quartz sand is being screened, the vibration motor 8 is started, and the vibration motor 8 drives the screening chamber 3 to vibrate along the frame 1 through the spring 2. The quartz sand on the screening net is graded under the action of the multi-layer screening nets, and the quartz sand on different screening nets flows out through different discharge ports 4 to achieve screening of the quartz sand.

[0023] Furthermore, if Figure 3 、 4 As shown in Figures 6 and 7, the material equalizing structure includes a number of material equalizing plates evenly distributed along the width direction of the screening chamber 3 and rotatably connected to the feeding barrel 5, and a number of material equalizing teeth 11 are evenly distributed on the material equalizing plates; a number of the material equalizing plates are coaxially fixed with an upper rotating rod 27, and an upper synchronous rod 28 is rotatably connected to the upper rotating rod 27, and a number of the upper rotating rods 27 are rotatably connected to the upper synchronous rod 28.

[0024] Under the action of the upper rotating rod 27 and the upper synchronization rod 28, several material balancing plates rotate synchronously along the feeding barrel 5; during the rotation process, the material balancing plates drive the quartz sand in the feeding barrel 5 to flow in the width direction of the screening chamber 3 through the material balancing teeth 11, so that the quartz sand flows downward evenly, thereby improving the uniformity of quartz sand feeding.

[0025] Furthermore, if Figure 7 As shown, a driving motor 26 is fixedly connected to the feeding barrel 5, and the output end of the driving motor 26 is connected to an input rod 29; a traction rod 30 is rotatably connected to the input rod 29, and one of the material balancing plates is coaxially fixed with an output rod 31, and the other end of the output rod 31 is rotatably connected to the traction rod 30.

[0026] When the material balancing plate needs to rotate, the drive motor 26 is started, and the drive motor 26 drives the input rod 29 to rotate; since the input rod 29, the traction rod 30, and the output rod 31 form a crank 23 rocker 25 mechanism, when the input rod 29 rotates, the input rod 29 can drive the output rod 31 to swing back and forth through the traction rod 30, and the output rod 31 drives one of the material balancing plates to swing back and forth, and under the action of the upper rotating rod 27 and the upper synchronization rod 28, several material balancing plates rotate synchronously along the feeding barrel 5.

[0027] Furthermore, if Figure 3 and Figure 8 As shown, a cleaning motor 15 is fixedly connected to the feeding barrel 5, and a screw 16 is connected to the output end of the cleaning motor 15; a sliding frame 32 is screwed onto the screw 16, and a guide rod 17 for guiding the sliding frame 32 is fixedly connected to the feeding barrel 5; upper cleaning teeth 14 are provided between adjacent said equalizing teeth 11, and several of said upper cleaning teeth 14 are fixedly connected to the sliding frame 32.

[0028] If quartz sand is blocked between adjacent balancing teeth 11 after the present application has been used for a long time, the cleaning motor 15 can be started, and the cleaning motor 15 drives the sliding frame 32 to slide along the guide rod 17 through the screw 16; the sliding frame 32 drives the upper cleaning teeth 14 to contact the balancing teeth 11 on several balancing plates in turn, and clean the quartz sand stuck on the balancing teeth 11; during the cleaning process, the dividing plate 12 can also be rotated synchronously to contact the cleaning teeth to improve the cleaning effect.

[0029] Furthermore, if Figure 5 and Figure 9 As shown, the material dividing structure includes several material dividing components uniformly distributed along the width direction of the screening chamber 3, and several of the material dividing components include a pair of material dividing plates 12 that are rotatably connected to the feeding barrel 5 and rotate in opposite directions; a pair of the material dividing plates 12 are coaxially fixed with synchronous wheels 19, and a pair of the synchronous wheels 19 are engaged with each other; one of the material dividing plates 12 of several of the material dividing components is coaxially fixed with a lower rotating rod 33, and the lower rotating rod 33 is rotatably connected with a lower synchronous rod 34, and several of the lower rotating rods 33 are rotatably connected to the lower synchronous rod 34.

[0030] When the dividing structure is in use, under the action of the lower rotating rod 33 and the lower synchronous rod 34, several dividing components move synchronously; under the action of a pair of synchronous wheels 19, a pair of dividing plates 12 rotate synchronously in opposite directions, so that a pair of dividing plates 12 form a triangular structure to guide the quartz sand, so that the quartz sand flows between adjacent dividing components under the action of the dividing plates 12 of adjacent dividing components, and the quartz sand is evenly divided into several piles along the width direction of the screening chamber 3. Under the action of the feeding structure and the flow of the quartz sand itself, the quartz sand is mixed again to ensure the uniformity of the quartz sand entering the screening net; according to the fluidity of different types of quartz sand, the number of dividing components set can be appropriately changed to improve the uniformity of the quartz sand in the feeding barrel 5; in addition, through the reciprocating swing of the dividing plate 12, the quartz sand on the dividing plate 12 can flow downward stably and continuously.

[0031] Furthermore, if Figure 5 As shown, the synchronization structure includes a connecting disk 20 coaxially fixed to the material distribution plate, and a driving ring gear 21 is fixed to the connecting disk 20; the feeding barrel 5 is rotatably connected to a driving wheel 22 that meshes with the driving ring gear 21, and the connecting disk 20 is provided with a fan-shaped groove that cooperates with the rotating shaft of the driving wheel 22, and a crank 23 is fixed to the driving wheel 22; the crank 23 is rotatably connected to a connecting rod 24, and the connecting rod 24 is rotatably connected to a rocker 25, and the other end of the rocker 25 is coaxially fixed to the material distribution plate 12.

[0032] When the material distributing plate rotates, the material distributing plate drives the driving ring gear 21 to rotate through the connecting plate 20, and the driving ring gear 21 drives the driving wheel 22 to rotate along the feeding barrel 5; the driving wheel 22 drives the crank 23 to rotate, and the crank 23 drives the rocker 25 to swing back and forth through the connecting rod 24, and the rocker 25 drives the material distributing plate 12 to swing back and forth.

[0033] Furthermore, if Figure 10 As shown, the feeding structure includes a feeding motor 7 fixed to the feeding barrel 5, and the output end of the feeding motor 7 is connected to a feeding shaft arranged along the width direction of the screening chamber 3; the feeding shaft has multiple groups of feeding components evenly distributed along the circumference, and the multiple groups of feeding components include a number of feeding teeth 13 evenly distributed along the axial direction of the feeding shaft; the screening chamber 3 is provided with an arc-shaped portion 9 connected to the feeding barrel 5 at one end close to the feeding barrel 5, and the end of the arc-shaped portion 9 away from the feeding barrel 5 is aligned with the reinforcing plate 10; the side of the feeding barrel 5 away from the arc-shaped portion 9 is fixed with a number of lower cleaning teeth 18 evenly distributed along the axial direction of the feeding shaft, the cross-section of the lower cleaning teeth 18 is triangular, and the lower cleaning teeth 18 are arranged along the radial direction of the feeding shaft.

[0034] When the feeding structure is in use, the feeding motor 7 is started, the feeding motor 7 drives the feeding shaft to rotate, and the feeding shaft drives the feeding teeth 13 to rotate along the circumference; the feeding shaft drives the quartz sand flowing down from the dividing plate 12 to flow to the arc-shaped portion 9 of the feeding barrel 5 through the feeding teeth 13, so that the quartz sand flows through the arc-shaped portion 9 to the reinforcing plate 10; through the setting of the lower cleaning teeth 18, the quartz sand can be effectively prevented from getting stuck on the feeding teeth 13.

[0035] like Figures 1 to 10 As shown, the working process of the present invention is explained in detail below.

[0036] When the present invention is in use, quartz sand flows into the feeding barrel 5 through the feeding port 6; the drive motor 26 is started, and the drive motor 26 drives the input rod 29 to rotate; since the input rod 29, the traction rod 30, and the output rod 31 form a crank 23 rocker 25 mechanism, when the input rod 29 rotates, the input rod 29 can drive the output rod 31 to swing back and forth through the traction rod 30, and the output rod 31 drives one of the material balancing plates to swing back and forth, and under the action of the upper rotating rod 27 and the upper synchronization rod 28, several material balancing plates are synchronously rotated along the feeding barrel 5; the material balancing plate drives the quartz sand in the feeding barrel 5 to flow in the width direction of the screening chamber 3 through the material balancing teeth 11, so that the quartz sand flows downward evenly.

[0037] At the same time, the material distribution plate drives the driving ring gear 21 to rotate through the connecting plate 20, and the driving ring gear 21 drives the driving wheel 22 to rotate along the feeding barrel 5; the driving wheel 22 drives the crank 23 to rotate, and the crank 23 drives the rocker 25 to swing back and forth through the connecting rod 24, and the rocker 25 drives the dividing plate 12 to swing back and forth; under the action of the lower rotating rod 33 and the lower synchronous rod 34, several dividing assemblies move synchronously; under the action of a pair of synchronous wheels 19, the pair of dividing plates 12 rotate synchronously in opposite directions, so that a pair of dividing plates 12 form a triangular structure to guide the quartz sand, so that the quartz sand flows between the adjacent dividing assemblies under the action of the dividing plates 12 of adjacent dividing assemblies, so that the quartz sand is evenly divided into several piles along the width direction of the screening chamber 3 and flows to the feeding teeth 13; under the action of the feeding teeth 13 and the flow of quartz sand, several piles of quartz sand are mixed with each other, so that the quartz sand is evenly arranged in the feeding barrel 5.

[0038] Start the feeding motor 7, the feeding motor 7 drives the feeding shaft to rotate, and the feeding shaft drives the feeding teeth 13 to rotate along the circumference; the feeding shaft drives the quartz sand flowing down from the dividing plate 12 to flow toward the arc-shaped portion 9 of the feeding cylinder 5 through the feeding teeth 13, so that the quartz sand flows through the arc-shaped portion 9 to the reinforcing plate 10.

[0039] Start the vibration motor 8, which drives the screening chamber 3 to vibrate along the frame 1 through the spring 2. The quartz sand on the screening net is graded under the action of the multi-layer screening nets. The quartz sand on different screening nets flows out through different discharge ports 4 to achieve screening of the quartz sand.

[0040] Compared with the prior art, the advantages and beneficial effects of the present invention are: 1. When the present invention is in use, the quartz sand in the feeding barrel 5 is driven by the quartz sand balancing plate and the quartz sand balancing teeth 11 to flow in the width direction of the screening chamber 3 through the quartz sand balancing plate 11, so that the quartz sand flows downward evenly; in addition, the quartz sand is caused to flow between adjacent quartz sand balancing assemblies under the action of the quartz sand balancing plates 12 of adjacent quartz sand balancing assemblies, so that the quartz sand is evenly divided into several piles along the width direction of the screening chamber 3 and flows toward the feeding teeth 13; under the action of the feeding teeth 13 and the flow of quartz sand, the several piles of quartz sand are mixed with each other, so that the quartz sand is evenly arranged in the feeding barrel 5, so as to improve the uniformity of the quartz sand on the screening net.

[0041] 2. When the present invention is in use, through the arrangement of the feeding motor 7, the feeding shaft, the feeding teeth 13, the arc-shaped portion 9, and the reinforcing plate 10, under the action of the feeding motor 7, the feeding shaft, the feeding teeth 13, and the arc-shaped portion 9, the quartz sand flows along the circumference to the reinforcing plate 10, and then flows to the screening mesh through the reinforcing plate 10, which can effectively avoid the impact of the quartz sand on the screening mesh and improve the service life of the screening mesh.

Claims

1. A fracturing proppant quartz sand screening device, comprising a screening chamber (3), a feeding cylinder (5) provided on the screening chamber (3), and a feeding mechanism provided on the feeding cylinder (5); characterized in that: The feeding mechanism comprises a material distribution structure provided at the top of the feeding cylinder (5), a material distribution structure provided below the material distribution structure, and a synchronous structure for driving the material distribution structure to move connected to the material distribution structure; a feeding structure for driving quartz sand into the interior of the screening chamber (3) is provided below the material distribution structure, and a reinforcing plate (10) cooperating with the feeding structure is fixedly connected to the screening chamber (3).

2. The fracturing proppant quartz sand screening device according to claim 1, characterized in that: The screening chamber (3) is provided with multiple layers of screening mesh for screening quartz sand, and the top surface of the uppermost layer of the screening mesh is aligned with the top surface of the reinforcing plate (10); the end of the screening chamber (3) away from the feeding barrel (5) is provided with multiple discharge ports (4) corresponding to the multiple layers of the screening mesh, and the top of the feeding barrel (5) is fixed with an inverted frustum-shaped feeding port (6).

3. The fracturing proppant quartz sand screening device according to claim 2, characterized in that: A frame (1) is provided below the screening chamber (3), a spring (2) cooperating with the screening chamber (3) is provided on the frame (1), and a vibration motor (8) is fixedly connected to the screening chamber (3).

4. The fracturing proppant quartz sand screening device according to claim 1, characterized in that: The material distribution structure comprises a plurality of material distribution plates uniformly distributed along the width direction of the screening chamber (3) and rotatably connected to the feeding cylinder (5), and a plurality of material distribution teeth (11) are uniformly distributed on the plurality of material distribution plates; the plurality of material distribution plates are coaxially fixed with an upper rotating rod (27), the upper rotating rod (27) is rotatably connected to an upper synchronous rod (28), and the plurality of upper rotating rods (27) are rotatably connected to the upper synchronous rod (28).

5. The fracturing proppant quartz sand screening device according to claim 4, characterized in that: A driving motor (26) is fixedly connected to the feeding barrel (5), and an output end of the driving motor (26) is connected to an input rod (29); a traction rod (30) is rotatably connected to the input rod (29), and an output rod (31) is coaxially fixedly connected to one of the material balancing plates, and the other end of the output rod (31) is rotatably connected to the traction rod (30).

6. The fracturing proppant quartz sand screening device according to claim 4, characterized in that: A cleaning motor (15) is fixedly connected to the feeding barrel (5), and a lead screw (16) is connected to the output end of the cleaning motor (15); a sliding frame (32) is screwed onto the lead screw (16), and a guide rod (17) for guiding the sliding frame (32) is fixedly connected to the feeding barrel (5); upper cleaning teeth (14) are provided between adjacent material-leveling teeth (11), and a plurality of the upper cleaning teeth (14) are fixedly connected to the sliding frame (32).

7. The fracturing proppant quartz sand screening device according to claim 4, characterized in that: The material distribution structure comprises a plurality of material distribution components uniformly distributed along the width direction of the screening chamber (3), and the plurality of material distribution components each comprise a pair of material distribution plates (12) rotatably connected to the feeding cylinder (5) and rotating in opposite directions; the pair of material distribution plates (12) are coaxially fixed with a synchronous wheel (19), and the pair of synchronous wheels (19) are meshed with each other; one of the material distribution plates (12) of the plurality of material distribution components is coaxially fixed with a lower rotating rod (33), the lower rotating rod (33) is rotatably connected to a lower synchronous rod (34), and the plurality of lower rotating rods (33) are rotatably connected to the lower synchronous rod (34).

8. The fracturing proppant quartz sand screening device according to claim 7, characterized in that: The synchronization structure includes a connecting disk (20) coaxially fixed to the material distribution plate, and a driving ring gear (21) is fixed to the connecting disk (20); a driving wheel (22) meshing with the driving ring gear (21) is rotatably connected to the feeding barrel (5), and a crank (23) is fixed to the driving wheel (22); a connecting rod (24) is rotatably connected to the crank (23), and a rocker (25) is rotatably connected to the connecting rod (24), and the other end of the rocker (25) is coaxially fixed to the material distribution plate (12).

9. The fracturing proppant quartz sand screening device according to claim 1, characterized in that: The feeding structure includes a feeding motor (7) fixedly connected to the feeding barrel (5), and the output end of the feeding motor (7) is connected to a feeding shaft arranged along the width direction of the screening chamber (3); the feeding shaft has multiple groups of feeding components evenly distributed along the circumference, and the multiple groups of feeding components each include a plurality of feeding teeth (13) evenly distributed along the axial direction of the feeding shaft; the screening chamber (3) is provided with an arc portion (9) connected to the feeding barrel (5) at one end close to the feeding barrel (5), and the arc portion (9) is aligned with the reinforcing plate (10) at one end away from the feeding barrel (5).

10. The fracturing proppant quartz sand screening device according to claim 9, characterized in that: A plurality of lower cleaning teeth (18) uniformly distributed along the axial direction of the feeding shaft are fixedly connected to one side of the feeding cylinder (5) away from the arc-shaped portion (9). The cross-section of the lower cleaning teeth (18) is triangular and the lower cleaning teeth (18) are arranged along the radial direction of the feeding shaft.

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