Pneumatic conveying material seal pump
By configuring a heating unit and a screening unit in the material conveying pump, the material is dried and screened, which solves the problem of agglomeration and blockage caused by material moisture, and realizes the continuity of material conveying and the stability of the equipment.
Patent Information
- Application Number
- CN202511190966.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-25
- Publication Date
- 2025-11-11
AI Technical Summary
During operation, if the material moisture content exceeds the standard, it may cause caking and adhesion to the inner wall of the pipeline, resulting in blockage and affecting the continuity of material conveying and the stability of the equipment.
The material is dried using a heating unit and then screened and dispersed by a screening unit to ensure that the material is dry and loose and to prevent clumping. The screening unit includes a screen plate, a servo motor-driven spindle, and rubber levers, which work together with a pneumatic power device to achieve fluidization and uniform dispersion of the material.
It effectively prevents materials from clumping and sticking together during the drying process, ensures smooth material conveying, prevents pipe blockage, and guarantees the smooth operation of the system.
Smart Images
Figure CN120922609A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of material conveying, and more particularly to a pneumatic conveying material sealing pump. Background Technology
[0002] The material sealing pump is a powder and granular material conveying equipment based on low-pressure dilute phase pneumatic conveying technology. It is widely used in industries such as power, building materials, and chemicals to convey dry and loose materials such as fly ash, cement, and limestone powder. Its core feature is that it uses the kinetic energy of airflow to propel the material flow, while the material sealing structure prevents air leakage during the conveying process, thus achieving continuous and stable material conveying. It has advantages such as compact equipment structure, small footprint, and flexible layout. Compared with traditional mechanical conveying equipment (such as screw conveyors and bucket elevators), it can effectively reduce material dust and equipment wear. In the current operating environment, one of the most common problems encountered by pneumatic conveying pumps during operation is pipeline blockage. This usually occurs because the moisture content of the material exceeds the normal standard, causing the material to clump together during transportation and adhere to the inner wall of the pipeline. Over time, these clumps tend to gradually increase in size, eventually leading to complete blockage of the pipeline. When the material settles in the horizontal pipeline, it causes an interruption in material transportation. To restore normal material transportation, manual cleaning of the pipeline is required, which is not only time-consuming and labor-intensive, but if the blockage is severe, it may also lead to pipeline rupture, resulting in greater losses and maintenance costs. Therefore, a pneumatic conveying pump for material sealing is designed. Summary of the Invention
[0003] The purpose of this invention is to provide a pneumatic conveying material sealing pump to solve the problem mentioned in the background art, where material moisture content exceeds the standard, causing agglomeration and adhesion to the inner wall of the pipe, leading to pipe blockage. To achieve the above objectives, the present invention adopts the following technical solution: A pneumatic conveying pump includes a pump body housing and further includes: A processing chamber is fixed on the outer shell of the pump body, and a screening unit is provided inside the processing chamber for screening materials. A material hopper is provided directly above the processing chamber. A connecting pipe is fixed between the processing chamber and the material hopper. A support frame is fixed on the material hopper. A discharge pipe and an air supply pipe are fixed on the outer shell of the pump body. The air supply pipe is equipped with a heating unit adapted to the processing chamber. The heating unit is used for drying the material, and one end of the air supply pipe is equipped with a pneumatic power device.
[0004] Preferably, the screening unit includes: a fluidizing air chamber fixedly connected to the processing chamber; a screen plate slidably connected inside the processing chamber; a main shaft rotatably connected to the processing chamber; a servo motor coaxially fixed to the processing chamber and the main shaft; a sealing box fixed inside the processing chamber via a rod; a driven shaft a rotatably connected between the processing chamber and the sealing box; rubber levers fixed to both the driven shaft a and the main shaft; a driven shaft b rotatably connected to the sealing box; a channel for the driven shaft b to pass through the screen plate; a plurality of bevel gears meshing and transmitting power between the driven shaft b, the driven shaft a, and the main shaft; a reset component adapted to the screen plate inside the processing chamber; a turntable fixed to the driven shaft b; at least two transmission blocks a fixed to the turntable; and a transmission block b adapted to the transmission blocks a fixed to the screen plate.
[0005] Preferably, the reset component includes: at least two mounting blocks fixed inside the processing chamber, a connecting rod slidably passing through the mounting blocks, a pulley fixed at one end of the connecting rod and the pulley abutting against the sieve plate, a spring sleeved on the connecting rod, one end of the spring fixed to the pulley and the other end of the spring fixed to the mounting block, and a conical block fixed at one end of the connecting rod.
[0006] Preferably, a conical cover is fixed to one end of the shaft b, and several material distribution plates are fixed on the conical cover. The conical cover is located directly below the pipe, and the central axis of the conical cover is collinear with the central axis of the processing chamber.
[0007] Preferably, the heating unit includes: at least two gas collection boxes fixed on the processing chamber, a gas supply pipe fixed between the gas collection box and the gas supply pipe, a flow guide shroud fixed at one end of the gas supply pipe inside the gas supply pipe, a connecting pipe fixed between the gas collection box and the processing chamber, a filter plate slidingly passing through the gas collection box, and a heater fixed inside the gas collection box located on one side of the filter plate.
[0008] Preferably, a guide plate is fixed inside the processing chamber, the guide plate is located on one side of the connecting pipe, and the guide plate and the processing chamber are arranged at an angle.
[0009] Preferably, a guide cover is fixed on the screen plate, and the guide cover has a channel for the shaft b to pass through. The central axis of the guide cover is collinear with the central axis of the screen plate.
[0010] Preferably, both transmission block a and transmission block b have a smooth arc surface on one side, and one side of transmission block b abuts against the turntable.
[0011] Preferably, the pump body shell has an inspection port with a fixed inspection window, and a frame is fixed on the pump body shell, and the frame is fixed to the support frame.
[0012] Preferably, the central axis of the orifice is collinear with the central axis of the channel, and the guide cover is located directly below the conical cover.
[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a heating unit to effectively guide compressed air transported through the air supply pipeline and precisely deliver it to both sides of the processing chamber. The compressed air undergoes meticulous heating to achieve a suitable temperature. Subsequently, this heated air is used to comprehensively dry and bake the material. This method can efficiently dry high-humidity materials. The use of hot air drying technology can also effectively prevent the material from clumping and adhering to the inner wall of the discharge pipe during the drying process, thus avoiding blockages and ensuring smooth and unobstructed material transport. This invention, through the setting of a screening unit, can efficiently disperse materials. This process ensures that the materials can be evenly and fully dispersed after being subjected to external force, thereby effectively avoiding the phenomenon of material caking during processing. The screening unit can also accurately remove various impurities from the materials, ensuring that the materials entering the pump body strictly meet the predetermined particle size requirements, preventing blockage, and thus ensuring the smooth operation of the entire system. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a side sectional view of the present invention; Figure 4 for Figure 3 Enlarged schematic diagram of the structure of region A in the middle; Figure 5 This is a schematic diagram of the side section structure of the processing chamber of the present invention; Figure 6 for Figure 5 Enlarged schematic diagram of the structure of region B in the middle; Figure 7 This is a schematic diagram of the screening unit structure of the present invention; Figure 8 for Figure 7Enlarged schematic diagram of the structure of region C in the middle; Figure 9 This is a bottom view of the sieve plate structure of the present invention; Figure 10 for Figure 9 Enlarged schematic diagram of the structure of region D in the middle; Figure 11 This is a schematic diagram of the overall structure of shaft b of the present invention; Figure 12 for Figure 11 Enlarged schematic diagram of the structure of region E in the middle; Figure 13 This is a schematic diagram of the transmission block b structure of the present invention; Figure 14 This is a side sectional view of the material guide cover structure of the present invention; Figure 15 for Figure 14 Enlarged schematic diagram of the structure of region F in the middle.
[0016] Drawing number descriptions: 1. Pump body casing; 2. Processing chamber; 3. Screening unit; 4. Hopper; 5. Pipeline; 6. Support frame; 7. Discharge pipe; 8. Air supply pipe; 9. Heating unit; 10. Pneumatic power unit; 11. Fluidized air chamber; 12. Screen plate; 13. Main shaft; 14. Servo motor; 15. Rod; 16. Sealing box; 17. Driven shaft a; 18. Rubber lever; 19. Driven shaft b; 20. Channel; 21. Bevel gear; 22. Reset component 23. Turntable; 24. Transmission block a; 25. Transmission block b; 26. Mounting block; 27. Connecting rod; 28. Pulley; 29. Spring; 30. Conical block; 31. Conical cover; 32. Material distribution plate; 33. Air collection box; 34. Air delivery pipe; 35. Flow guide; 36. Connecting pipe; 37. Filter plate; 38. Heater; 39. Material guide plate; 40. Material guide cover; 41. Channel; 42. Inspection port; 43. Inspection window; 44. Frame. Detailed Implementation
[0017] The present invention will now be described in further detail with reference to the accompanying drawings.
[0018] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.
[0019] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this invention and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this invention.
[0020] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.
[0021] Example 1: Please refer to Figure 1-15 A pneumatic conveying material sealing pump includes a pump body shell 1 and a processing chamber 2 fixed on the pump body shell 1. The processing chamber 2 is equipped with a screening unit 3 for screening materials. A material hopper 4 is located directly above the processing chamber 2. A connecting pipe 5 is fixed between the processing chamber 2 and the material hopper 4. A support frame 6 is fixed on the material hopper 4. A discharge pipe 7 and an air supply pipe 8 are fixed on the pump body shell 1. A heating unit 9 adapted to the processing chamber 2 is installed on the air supply pipe 8. The heating unit 9 is used for drying materials. A pneumatic power device 10 is installed at one end of the air supply pipe 8. One end of the air supply pipe 8 is equipped with an adjustable air pipe, and an air valve is installed on the adjustable air pipe. An air inlet pipe is fixed on the adjustable air pipe, and a fan is connected to the other end of the air inlet pipe to provide airflow power for material conveying. The fan creates a conveying pressure difference and provides the compressed air required for material fluidization. This is a conventional setting in the field, so it will not be described in detail here. It should be noted that the pneumatic fluidization device mainly includes: a fluidizing air chamber, a fluidizing plate, and a fluidizing air inlet valve. By introducing a low-pressure airflow into the bottom of the material through the pump body shell 1, an air cushion layer is formed between the material particles, which destroys the adhesion between the particles and allows the material to change from a static stacked state to a fluidized state similar to a fluid, greatly reducing the conveying resistance and achieving precise control of material fluidization. This is a conventional setting in this field, so it will not be described in detail here. It should also be noted that an inspection port 42 is provided on the pump body shell 1, and an inspection window 43 is fixed on the inspection port 42. A frame 44 is fixed on the pump body shell 1, and the frame 44 is fixed to the support frame 6. With the addition of the inspection port 42 and the inspection window 43, it is possible to directly observe whether material accumulation or material blockage of the channel 20 has formed inside the pump body shell 1. The inspection window 43 can be opened directly after the equipment is stopped, and the operation and maintenance personnel can observe through the window. With the frame 44 and the support frame 6 fixed, it is possible to effectively maintain the relative stability of the pump body shell 1 and the hopper 4. In this scheme, the material is fed into the processing chamber 2 through the hopper 4 and the pipeline 5. After the material enters the processing chamber 2, hot air is delivered into the processing chamber 2 through the heating unit 9 to dry the material in the processing chamber 2. After the material is dried, the screening unit 3 shakes and screens the material that has agglomerated, and sends the material that meets the particle size requirements into the pump body shell 1, and then through the pneumatic fluidization device and compressed air.
[0022] Furthermore, the heating unit 9 includes: at least two gas collection boxes 33 fixed on the processing chamber 2, a gas supply pipe 34 connected between the gas collection box 33 and the gas supply pipe 8, a guide shroud 35 fixed at one end of the gas supply pipe 34 inside the gas supply pipe 8, a connecting pipe 36 connected between the gas collection box 33 and the processing chamber 2, a filter plate 37 slidingly passing through the gas collection box 33, and a heater 38 fixed inside the gas collection box 33 on one side of the filter plate 37; The processing chamber 2 is equipped with a guide plate 39, which is located on one side of the connecting pipe 36 and is inclined to the processing chamber 2. The guide plate 39 ensures that the material can fall smoothly onto the screen plate 12, which not only prevents the material from falling into the connecting pipe 36, but also prevents the material from stagnating. Specifically, the guide shroud 35 is located inside the air supply pipe 8 with one end in a hemispherical shape, and the opening of the guide shroud 35 is located in the air inlet direction of the air supply pipe 8, so as to ensure that compressed air can smoothly enter the air supply pipe 34. It should be noted that heater 38 heats air from a low temperature to the target temperature through energy conversion, and the heat is transferred to the flowing air by the heat exchange element, and finally outputs a hot airflow that meets the temperature requirements, so as to achieve precise control of the air heating temperature during material drying. This is a conventional setting in this field, so it will not be described in detail here. It should also be noted that, through the configuration of heating unit 9, the compressed air transported in air supply pipe 8 is effectively guided and precisely delivered to both sides of processing chamber 2. During this process, the compressed air undergoes meticulous heating treatment to achieve a suitable temperature. Subsequently, with the help of this heated air, the material is thoroughly dried and baked. This method can efficiently dry high-humidity materials. Using hot air drying technology, the temperature is strictly controlled within the range of 80 to 120°C. This temperature setting not only ensures that the material remains dry and loose, but also effectively prevents the material from clumping during the drying process and adhering to the inner wall of discharge pipe 8, thus preventing blockage of discharge pipe 8. This ensures smooth and unobstructed material conveying. In this scheme, the heating unit 9 is used to dry the material. The compressed air in the air supply pipe 8 is dispersed and guided by the air supply pipe 34, so that the compressed air enters the air collection box 33. The compressed air is filtered by the filter plate 37. After filtration, the air is heated by the heater 38 and the air that meets the required temperature is delivered to the processing chamber 2. With the help of the guide plate 39, the hot air is delivered to the screen plate 12, thereby completing the drying of the material.
[0023] In this plan, the material pretreatment process is as follows: In the first step, the material is input from the silo 4 and transported to the processing chamber 2 by the connecting pipe 36. Compressed air is input into the air supply pipe 8 through the pneumatic power device 10. The second step is to use the air supply pipe 34 to divert and guide the compressed air in the air supply pipe 8 to the heating unit 9, and heat the compressed air through the heating unit 9. The heated air is then transported to the processing chamber 2. The third step involves drying the material in the processing chamber 2 with heated air and then shaking and screening the material through the screening unit 3 to shake the material that meets the particle size requirements into the pump body shell 1. Fourth step: Compressed air is introduced into the fluidizing air chamber 11 on the pump body shell 1. The material begins to fluidize in about 10 to 30 seconds. The blower is started and the blower air volume is gradually adjusted to the set value. The material enters the discharge pipe 7 under the action of pressure difference.
[0024] Example 2: Please refer to Figure 8 - Figure 15 This embodiment further explains the first embodiment, and the difference lies in the method of shaking and screening the material in the processing chamber 2.
[0025] Furthermore, the screening unit 3 includes: a fluidizing air chamber 11 fixedly connected to the processing chamber 2; a screen plate 12 slidably connected inside the processing chamber 2; a main shaft 13 rotatably connected to the processing chamber 2; a servo motor 14 coaxially fixed to the processing chamber 2 and the main shaft 13; a sealing box 16 fixed inside the processing chamber 2 via a rod 15; a driven shaft a17 rotatably connected between the processing chamber 2 and the sealing box 16; rubber levers 18 fixed on both the driven shaft a17 and the main shaft 13; the rubber levers 18 are made of a soft material; when the driven shaft a17 and the main shaft 13 rotate... The rubber lever 18 is rotated, causing it to vibrate against the screen plate 12, which accelerates the screening of materials by the screen plate 12 to a certain extent. A driven shaft b19 is rotatably connected to the sealing box 16, and a channel 20 is provided on the screen plate 12 for the driven shaft b19 to pass through. The driven shaft b19 is connected to the driven shaft a17 and the main shaft 13 by several bevel gears 21. A turntable 23 is fixed on the driven shaft b19, and at least two transmission blocks a24 are fixed on the turntable 23. A transmission block b25 that is compatible with the transmission block a24 is fixed on the screen plate 12. The processing chamber 2 is equipped with a reset component 22 adapted to the screen plate 12. The reset component 22 includes: at least two mounting blocks 26 fixed in the processing chamber 2; a connecting rod 27 slidingly passing through the mounting blocks 26; a pulley 28 fixed at one end of the connecting rod 27 and the pulley 28 abutting against the screen plate 12; a spring 29 sleeved on the connecting rod 27; one end of the spring 29 fixed to the pulley 28 and the other end of the spring 29 fixed to the mounting block 26; and a conical block 30 fixed at one end of the connecting rod 27. The setting of the conical block 30 ensures that the material can slide down along the surface of the conical block 30, avoiding material retention. The elasticity of the spring 29 ensures that the roller always maintains contact with the screen plate 12. Specifically, both transmission blocks a24 and b25 have smooth arc surfaces on one side. One side of transmission block b25 abuts against turntable 23. Through the arrangement of transmission blocks a24 and b25, when transmission blocks a24 and b25 are squeezed and transmitted, it is ensured that they are in a relatively smooth state to avoid jamming. A guide cover 40 is fixed on the screen plate 12. The guide cover 40 has a channel 41 for the shaft b19 to pass through. The central axis of the guide cover 40 is collinear with the central axis of the screen plate 12. Through the arrangement of the guide cover 40, it is ensured that the material can fall evenly onto the screen plate 12. The central axis of the channel 41 is collinear with the central axis of the channel 20. The guide cover 40 is located directly below the conical cover 31. It should be noted that a conical cover 31 is fixed from one end of shaft b19, and several material distribution plates 32 are fixed on the conical cover 31. The conical cover 31 is located directly below the pipe 5, and the central axis of the conical cover 31 is collinear with the central axis of the processing chamber 2. By adding the conical cover 31 and the material distribution plates 32, it is ensured that the material can be dispersed by force when it falls from the pipe 5, which reduces the material caking to a certain extent. It should also be noted that the screening unit 3 can efficiently disperse the material. This process ensures that the material can be evenly and fully dispersed after being subjected to external force, thereby effectively avoiding the phenomenon of material caking during processing. At the same time, the screening unit 3 can also accurately remove various impurities from the material, ensuring that the material entering the pump housing 1 strictly meets the predetermined particle size requirements, preventing blockage, and thus ensuring the smooth operation of the entire system. In this scheme, the screening unit 3 is used to screen materials according to the following principle: driven by the servo motor 14, the main shaft 13 rotates synchronously. The meshing transmission of the bevel gear 21 causes the driven shafts a17 and b19 to rotate, which drives the rubber lever 18 to rotate synchronously. The elasticity of the spring 29 ensures that the roller always remains in contact with the screen plate 12. The rotation of the driven shaft b19 causes the turntable 23 to rotate synchronously, which in turn drives the transmission block a24 to rotate synchronously. The squeezing transmission between the transmission block a24 and the transmission block b25 causes the screen plate 12 to vibrate.
[0026] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from the stated principles.
Claims
1. A pneumatic conveying material sealing pump, comprising a pump body shell (1); Its features are, Also includes: A processing chamber (2) is fixed on the outer shell (1) of the pump body, and a screening unit (3) is provided inside the processing chamber (2). The screening unit (3) is used to screen the material. A hopper (4) is provided directly above the processing chamber (2). A connecting pipe (5) is fixed between the processing chamber (2) and the hopper (4). A support frame (6) is fixed on the hopper (4). A discharge pipe (7) and an air supply pipe (8) are fixed on the outer shell (1) of the pump body, and; The air supply pipe (8) is equipped with a heating unit (9) that is compatible with the processing chamber (2). The heating unit (9) is used to dry the material, and one end of the air supply pipe (8) is equipped with a pneumatic power device (10).
2. The pneumatic conveying material sealing pump according to claim 1, characterized in that: The screening unit (3) includes: a fluidizing air chamber (11) connected to the processing chamber (2) is fixed on the processing chamber (2); a sieve plate (12) is slidably connected inside the processing chamber (2); a main shaft (13) is rotatably connected to the processing chamber (2); a servo motor (14) coaxially fixed to the processing chamber (2) and the main shaft (13) is fixed on the processing chamber (2); a sealing box (16) is fixed inside the processing chamber (2) via a rod (15); a driven shaft a (17) is rotatably connected between the processing chamber (2) and the sealing box (16); and rubber levers (18) are fixed on both the driven shaft a (17) and the main shaft (13). The sealing box (16) is rotatably connected to the driven shaft b (19), and the sieve plate (12) is provided with a channel (20) through which the driven shaft b (19) passes. The driven shaft b (19) is meshed with the driven shaft a (17) and the main shaft (13) through several bevel gears (21). The processing chamber (2) is provided with a reset component (22) that is compatible with the sieve plate (12). The driven shaft b (19) is fixed with a turntable (23), and at least two transmission blocks a (24) are fixed on the turntable (23). The sieve plate (12) is fixed with a transmission block b (25) that is compatible with the transmission block a (24).
3. A pneumatic conveying material sealing pump according to claim 2, characterized in that: The reset component (22) includes: at least two mounting blocks (26) fixed inside the processing chamber (2), a connecting rod (27) slidingly passing through the mounting block (26), a pulley (28) fixed at one end of the connecting rod (27), and the pulley (28) abutting against the sieve plate (12), a spring (29) sleeved on the connecting rod (27), one end of the spring (29) fixed to the pulley (28), the other end of the spring (29) fixed to the mounting block (26), and a conical block (30) fixed at one end of the connecting rod (27).
4. A pneumatic conveying material sealing pump according to claim 2, characterized in that: A conical cover (31) is fixed at one end of the shaft b (19). Several material distribution plates (32) are fixed on the conical cover (31). The conical cover (31) is located directly below the pipe (5). The central axis of the conical cover (31) is collinear with the central axis of the processing chamber (2).
5. A pneumatic conveying material sealing pump according to claim 1, characterized in that: The heating unit (9) includes: at least two gas collection boxes (33) fixed on the processing chamber (2), a gas supply pipe (34) fixed between the gas collection box (33) and the gas supply pipe (8), a guide shroud (35) fixed at one end of the gas supply pipe (34) inside the gas supply pipe (8), a connecting pipe (36) fixed between the gas collection box (33) and the processing chamber (2), a filter plate (37) slidingly passing through the gas collection box (33), and a heater (38) fixed inside the gas collection box (33) on one side of the filter plate (37).
6. A pneumatic conveying material sealing pump according to claim 5, characterized in that: A guide plate (39) is fixed inside the processing chamber (2). The guide plate (39) is located on one side of the connecting pipe (36), and the guide plate (39) and the processing chamber (2) are arranged at an inclination.
7. A pneumatic conveying material sealing pump according to claim 4, characterized in that: A guide cover (40) is fixed on the sieve plate (12). The guide cover (40) has a channel (41) for the shaft b (19) to pass through. The central axis of the guide cover (40) is collinear with the central axis of the sieve plate (12).
8. A pneumatic conveying material sealing pump according to claim 2, characterized in that: Both transmission block a (24) and transmission block b (25) have a smooth arc surface on one side, and one side of transmission block b (25) abuts against the turntable (23).
9. A pneumatic conveying material sealing pump according to claim 1, characterized in that: The pump body shell (1) is provided with an inspection port (42) and an inspection window (43) is fixed on the inspection port (42). A frame (44) is fixed on the pump body shell (1) and the frame (44) is fixed to the support frame (6).
10. A pneumatic conveying material sealing pump according to claim 7, characterized in that: The central axis of the channel (41) is collinear with the central axis of the channel (20), and the guide cover (40) is located directly below the conical cover (31).