A pneumatic conveying device with anti-accumulation function

Abstract

This invention discloses a pneumatic conveying device with anti-accumulation function, relating to the technical field of pneumatic conveying equipment. It includes a conveying pipe connected to an air pump for supplying conveying gas. The conveying pipe is also connected to a hopper. A diversion chamber is provided on one side of the conveying pipe, and several diversion pipes are arranged on the side of the diversion chamber away from the conveying pipe. The air pump delivers gas into the conveying pipe, causing the gas to push the material in the hopper. Under the action of the pneumatic force, the material is conveyed along the conveying pipe towards the diversion chamber. In the diversion chamber, the material is distributed to the several diversion pipes, thus allowing the diversion pipes to divert and convey the material, separating it into several streams. This avoids the problem of material accumulation and blockage at pipe bends caused by concentrated material conveying, thereby accelerating material conveying and ensuring smooth pipeline flow.

Description

Technical Field

[0001] This invention relates to the field of pneumatic conveying equipment technology, specifically a pneumatic conveying equipment with anti-accumulation function. Background Technology

[0002] Pneumatic conveying devices utilize the kinetic energy of airflow to transport granular materials along the airflow direction within a conveying pipeline. Pneumatic conveying equipment has a simple structure and can transport materials in different directions such as horizontal, vertical, or inclined. Furthermore, it can simultaneously perform physical operations such as heating, cooling, drying, and airflow classification, or certain chemical operations on the materials during the conveying process.

[0003] However, in the process of conveying materials, existing pneumatic conveying devices will cause the material to collide with the inner wall of the pipeline when the material is conveyed to the bend of the pipeline, thus losing some kinetic energy and causing a loss of conveying pressure inside the pipeline. When the amount of material conveyed is large, it may cause pipeline blockage, thereby affecting the efficiency of material conveying. Summary of the Invention

[0004] The purpose of this invention is to provide a pneumatic conveying device with anti-accumulation function to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A pneumatic conveying device with anti-accumulation function includes a conveying pipe, which is connected to an air pump for providing conveying gas. The conveying pipe is also connected to a hopper. A diversion cavity is provided on one side of the conveying pipe, and a plurality of diversion pipes are provided on the side of the diversion cavity away from the conveying pipe.

[0007] The air pump delivers gas into the conveying pipe, which pushes the material in the hopper. Under the action of the air, the material is conveyed along the conveying pipe to the distribution chamber. In the distribution chamber, the material is distributed to several distribution pipes, which then distribute the material into several streams. This avoids the problem of material accumulation and blockage at pipe bends caused by concentrated material transport, thus speeding up the material transport and ensuring smooth pipeline transport.

[0008] Preferably, a vent pipe is provided between several of the diversion pipes, the vent pipe is connected to the bottom of the diversion cavity, and a drive assembly is provided inside the diversion cavity.

[0009] Preferably, a baffle is provided on the side of the diversion pipe near the diversion cavity, and the baffle divides the diversion cavity into several chambers;

[0010] Under the action of pneumatic force, the material moves through the conveying pipe to the diversion chamber. Then, under the action of the drive component, the material is conveyed from the center of the diversion chamber to the diversion pipe. During the conveying process, the material enters the chamber formed by two adjacent baffles, so that the material is evenly flowed to the diversion pipe.

[0011] Preferably, a plurality of connecting pipes are provided on the side of the vent pipe away from the drive assembly, one end of the connecting pipe is connected to the vent pipe, and the other end of the connecting pipe is connected to the diversion pipe.

[0012] Preferably, a pushing cavity is provided between several of the diverting pipes, and a pushing pipe is provided on the side of the pushing cavity near the diverting pipe, and the pushing pipe is connected to the diverting pipe and the connecting pipe respectively.

[0013] The arc-shaped plate moves along the push pipe, allowing it to either combine with the diversion pipe to form a pipeline or move to the bottom of the connecting pipe to combine with it. This allows for the simultaneous conveying of materials within the diversion pipe and the diversion of gas into the vent pipe and the connecting pipe. The conveyed gas is then directly delivered to the bend in the diversion pipe, pushing the material accumulated at the bend.

[0014] Preferably, an arc-shaped plate is provided at the bend of the diverter pipe, the arc-shaped plate is slidably connected to the push pipe, and a hydraulic cylinder is provided inside the push chamber, the push rod of the hydraulic cylinder is connected to the arc-shaped plate.

[0015] When the amount of material being conveyed is large and the weight is heavy, the controller activates the hydraulic cylinder. The push rod of the hydraulic cylinder then moves the arc plate, which moves along the push tube into the push chamber. That is, the arc plate disengages from the diversion pipe and moves to the bottom of the connecting pipe. At this point, the connecting pipe is connected to the diversion pipe through the arc plate. The connecting pipe acts as a pipeline for conveying the pushing gas, allowing the gas conveyed in the connecting pipe to be directly conveyed to the diversion pipe through the arc plate. This directly pushes the material accumulated at the bend of the diversion pipe, thereby clearing the diversion pipe and preventing the accumulation of material at the bend of the pipe.

[0016] Preferably, the driving assembly includes a fixed tube disposed in the middle of the flow divider cavity, an inclined surface is provided between the fixed tube and the flow divider cavity, a movable groove is provided on the inner side of the fixed tube, a movable tube is disposed in the movable groove, the movable tube is slidably connected to the movable groove, and a spring is provided between the movable tube and the movable groove.

[0017] When the material is conveyed from the conveying pipe, it encounters the rotating cone, which creates an impact force on the rotating cone during conveying, thus pushing the rotating cone to move. The rotating cone then pushes the fixed block to move, and the fixed block moves away from the rotating cone. This causes the fixed block to push the moving pipe, and the moving pipe moves along the moving groove towards the side closer to the vent pipe. When the moving pipe moves, it compresses the spring.

[0018] When the amount of material being conveyed is small, the material cannot push the rotating cone to move under the action of pneumatic force, and the amount of material being conveyed is small, so a large amount of accumulation will not occur when the material is conveyed in the pipeline.

[0019] When the amount of material being conveyed is large and the weight is light, the material can push the rotating cone to move under the action of pneumatic force. The rotating cone then pushes the moving pipe to move, so that part of the conveying port is connected to part of the filter hole, so that part of the gas conveyed in the diversion chamber flows into the moving pipe through the conveying port and the filter hole.

[0020] When the amount of material being conveyed is large and the weight is heavy, the material completely pushes the rotating cone, causing the rotating cone to move to its maximum stroke, that is, the filter hole completely overlaps and connects with the conveying port.

[0021] Preferably, a fixed block is provided at the top of the moving tube, a rotating cone is provided at the top of the fixed block, a plurality of blades are provided on the outside of the rotating cone, a protrusion is provided at the bottom of the rotating cone, a conveying impeller is provided on the side of the protrusion away from the fixed block, a motor is provided inside the fixed block, a bevel gear is provided on the drive shaft of the motor, a transmission shaft is provided between the rotating cone and the conveying impeller, a transmission gear is also provided on the transmission shaft, and the bevel gear meshes with the transmission gear.

[0022] During the material conveying process, the controller controls the motor drive inside the fixed block. The motor drive shaft drives the bevel gear to rotate. When the bevel gear rotates, it drives the transmission gear to mesh and transmit power. In turn, the transmission gear drives the transmission shaft between the rotating cone and the conveying impeller to rotate. As a result, the rotating cone and the conveying impeller rotate around the axis of the fixed block. When the rotating cone rotates, it drives several blades to rotate. Since the side of the rotating cone away from the fixed block is close to the conveying pipe, the distance between the conveying pipe and the rotating cone is reduced. As a result, the material conveyed in the conveying pipe accelerates when it flows in the space between the rotating cone and the conveying pipe. In addition, the centrifugal force generated by the rotation of several blades makes the material accelerate and the centrifugal force generated by the blades work together to make the material flow more quickly through the diversion chamber and be diverted and conveyed into several diversion pipes.

[0023] Preferably, the fixed tube has a plurality of filter holes on its side wall, and the moving tube has a plurality of conveying ports on its side wall.

[0024] When a large amount of material is being conveyed, the material has a greater impact force on the rotating cone when it moves through the conveying pipe to the diversion chamber. This allows the material to push the rotating cone to move, and the moving pipe will move towards the side closer to the vent pipe. As a result, the filter hole will completely overlap with the conveying port, and the diversion chamber and the moving pipe will be connected through the filter hole and the conveying port.

[0025] Preferably, the arc-shaped plate is provided with a plurality of air holes, and a plurality of one-way rotating plates are provided on the side of the air holes near the diversion pipe.

[0026] When the material being conveyed is of high quantity and relatively light weight, some filter holes and some conveying ports are connected. The motor drives the conveying impeller to rotate, causing the gas in the diversion chamber to flow through the filter holes and conveying ports into the moving pipe. Because the moving pipe has protrusions, the gas flow rate is accelerated upon entering the moving pipe, and the rotation of the conveying impeller further increases the gas conveying speed. The accelerated gas is conveyed through the moving pipe to the vent pipe, and then through the vent pipe to the connecting pipe. At this point, the arc-shaped plate contacts the diversion pipe, causing the gas in the connecting pipe to flow towards the pushing pipe. Because the arc-shaped plate has air holes with one-way rotating plates, the gas in the connecting pipe pushes the one-way rotating plates through the air holes, causing the gas to flow from the pushing pipe to the bend in the diversion pipe. This pushes away any material that might accumulate at the bend, thus preventing material accumulation at the bend and ensuring efficient material conveying.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. The arc-shaped plate moves along the push pipe, so that the arc-shaped plate can be combined with the diversion pipe to form a pipeline, or it can be moved to the bottom of the connecting pipe to form a pipeline. This allows the gas to be diverted and transported into the vent pipe and the connecting pipe while the material is being transported in the diversion pipe. The gas is then directly transported to the bend of the diversion pipe to push the material accumulated at the bend.

[0029] 2. Because the arc plate is equipped with air holes and a one-way rotating plate is installed on the air holes, the gas in the connecting pipe drives the one-way rotating plate to rotate through the air holes, so that the gas flows from the pushing pipe to the bend of the diversion pipe, thereby pushing the material that may accumulate at the bend of the diversion pipe, thus preventing the material from accumulating at the bend and affecting the material conveying effect. Attached Figure Description

[0030] Figure 1 This is a perspective view of the present invention;

[0031] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the internal structure of the present invention when conveying a large amount of material with a heavy weight.

[0033] Figure 4 This is an internal front view of the present invention when the amount of material being conveyed is large and the weight is heavy;

[0034] Figure 5This is a schematic diagram of the internal structure of the flow divider cavity;

[0035] Figure 6 This is a top view of the flow divider cavity.

[0036] Figure 7 This is a schematic diagram of the internal structure of the branch pipe and the connecting pipe;

[0037] Figure 8 This is a top view of the branch pipe and connecting pipe.

[0038] Figure 9 This is a schematic diagram of the drive component.

[0039] Figure 10 This is the front view of the driving component;

[0040] Figure 11 This is a schematic diagram of the arc-shaped block structure;

[0041] In the diagram: 1. Conveying pipe; 11. Diverting pipe; 12. Baffle;

[0042] 2. Diverter chamber; 21. Vent pipe; 22. Connecting pipe; 23. Pushing chamber; 24. Pushing pipe; 25. Arc plate; 26. Inclined surface;

[0043] 3. Drive assembly; 31. Fixed pipe; 32. Moving groove; 33. Moving pipe; 34. Fixed block; 35. Rotating cone; 351. Blade; 36. Protrusion; 37. Conveying impeller; 38. Filter hole; 39. Conveying port. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Example: Figures 1-11 As shown, the present invention provides a pneumatic conveying device with anti-accumulation function, including a conveying pipe 1, which is connected to an air pump for providing conveying gas. The conveying pipe 1 is also connected to a hopper. A diversion chamber 2 is provided on one side of the conveying pipe 1, and a plurality of diversion pipes 11 are provided on the side of the diversion chamber 2 away from the conveying pipe 1.

[0046] In one specific embodiment of the present invention, a vent pipe 21 is provided between several of the diversion pipes 11, the vent pipe 21 is connected to the bottom of the diversion cavity 2, and a drive assembly 3 is provided inside the diversion cavity 2.

[0047] In one specific embodiment of the present invention, a baffle 12 is provided on the side of the diversion pipe 11 near the diversion cavity 2, and the baffle 12 divides the diversion cavity 2 into several chambers.

[0048] In one specific embodiment of the present invention, a plurality of connecting pipes 22 are provided on the side of the vent pipe 21 away from the drive assembly 3. One end of the connecting pipe 22 is connected to the vent pipe 21, and the other end of the connecting pipe 22 is connected to the diversion pipe 11.

[0049] In one specific embodiment of the present invention, a pushing cavity 23 is provided between several of the diversion pipes 11, and a pushing pipe 24 is provided on the side of the pushing cavity 23 near the diversion pipe 11. The pushing pipe 24 is connected to the diversion pipe 11 and the connecting pipe 22 respectively.

[0050] In one specific embodiment of the present invention, an arc-shaped plate 25 is provided at the bend of the diversion pipe 11. The arc-shaped plate 25 is slidably connected to the push pipe 24. A hydraulic cylinder is provided inside the push cavity 23, and the push rod of the hydraulic cylinder is connected to the arc-shaped plate 25.

[0051] In one specific embodiment of the present invention, the arc-shaped plate 25 is provided with a plurality of air holes, and a plurality of unidirectional rotating plates are provided on the side of the air holes near the diversion pipe 11.

[0052] In one specific embodiment of the present invention, the driving component 3 includes a fixed tube 31, which is disposed in the middle of the diversion cavity 2. An inclined surface 26 is provided between the fixed tube 31 and the diversion cavity 2. A moving groove 32 is provided on the inner side of the fixed tube 31. A moving tube 33 is provided in the moving groove 32. The moving tube 33 is slidably connected to the moving groove 32. A spring is provided between the moving tube 33 and the moving groove 32.

[0053] In one specific embodiment of the present invention, a plurality of filter holes 38 are provided on the side wall of the fixed tube 31, and a plurality of conveying ports 39 are provided on the side wall of the moving tube 33.

[0054] In one specific embodiment of the present invention, a fixed block 34 is provided at the top of the moving tube 33, a rotating cone 35 is provided at the top of the fixed block 34, a plurality of blades 351 are provided on the outside of the rotating cone 35, a protrusion 36 is provided at the bottom of the rotating cone 35, a conveying impeller 37 is provided on the side of the protrusion 36 away from the fixed block 34, a motor is provided inside the fixed block 34, a bevel gear is provided on the drive shaft of the motor, a transmission shaft is provided between the rotating cone 35 and the conveying impeller 37, a transmission gear is also provided on the transmission shaft, and the bevel gear meshes with the transmission gear.

[0055] Working principle of the invention:

[0056] The air pump delivers gas into the conveying pipe 1, which pushes the material in the hopper. Under the action of the air force, the material is conveyed along the conveying pipe 1 to the diversion chamber 2. In the diversion chamber 2, the material is distributed to several diversion pipes 11, which diverts the material and separates it into several streams, thus avoiding the centralized conveying of the material.

[0057] Under the action of pneumatic force, the material moves through the conveying pipe 1 to the diversion chamber 2. Then, under the action of the driving component 3, the material is conveyed from the center of the diversion chamber 2 to the diversion pipe 11. During the conveying process, the material enters the chamber formed by two adjacent baffles 12, so that the material is evenly flowed to the diversion pipe 11.

[0058] During the material conveying process, the controller controls the motor drive inside the fixed block 34. The motor drive shaft drives the bevel gear to rotate. When the bevel gear rotates, it drives the transmission gear to mesh and transmit. In turn, the transmission gear drives the transmission shaft between the rotating cone 35 and the conveying impeller 37 to rotate. As a result, the rotating cone 35 and the conveying impeller 37 rotate around the axis of the fixed block 34. When the rotating cone 35 rotates, it drives several blades 351 to rotate. Since the side of the rotating cone 35 away from the fixed block 34 is close to the conveying pipe 1, the distance between the conveying pipe 1 and the rotating cone 35 is reduced. As a result, the material conveyed in the conveying pipe 1 accelerates when it flows in the space between the rotating cone 35 and the conveying pipe 1. In addition, the centrifugal force generated by the rotation of several blades 351 makes the material in the accelerated flow state cooperate with the centrifugal force generated by the blades 351, so that the material is more quickly conveyed through the diversion chamber 2 to several diversion pipes 11.

[0059] When the material is conveyed from the conveying pipe 1, it encounters the rotating cone 35, which creates an impact force on the rotating cone 35 during conveying, thereby pushing the rotating cone 35 to move. The rotating cone 35 then pushes the fixed block 34 to move. The fixed block 34 moves away from the rotating cone 35, which pushes the moving pipe 33. The moving pipe 33 moves along the moving groove 32 towards the side closer to the vent pipe 21. When the moving pipe 33 moves, it compresses the spring.

[0060] When the amount of material being conveyed is small, the material cannot be pushed to move the rotating cone 35 by the pneumatic force, and the amount of material being conveyed is small, so a large amount of accumulation will not occur when the material is conveyed in the pipeline.

[0061] When the amount of material being conveyed is large and the weight is light, the material can push the rotating cone 35 to move under the action of pneumatic force. The rotating cone 35 then pushes the moving tube 33 to move, so that part of the conveying port 39 is connected to part of the filter hole 38, so that part of the gas conveyed in the diversion chamber 2 flows into the moving tube 33 through the conveying port 39 and the filter hole 38.

[0062] At this time, part of the filter hole 38 and part of the conveying port 39 are connected. In addition, the motor drives the conveying impeller 37 to rotate, so that the gas in the diversion chamber 2 flows through the filter hole 38 and the conveying port 39 to the moving pipe 33. Since the moving pipe 33 is provided with a protrusion 36, the gas flow rate is accelerated when it enters the moving pipe 33. Under the action of the rotation of the conveying impeller 37, the gas conveying speed is further improved. The accelerated gas is conveyed through the moving pipe 33 to the vent pipe 21, and then through the vent pipe 21 to the connecting pipe 22. At this time, the arc plate 25 contacts the diversion pipe 11, so that the gas in the connecting pipe 22 will flow to the pushing pipe 24. Since the arc plate 25 is provided with air holes and the air holes are provided with one-way rotating plates, the gas in the connecting pipe 22 pushes the one-way rotating plates to rotate through the air holes, so that the gas flows from the pushing pipe 24 to the bend of the diversion pipe 11, thereby pushing the material that may accumulate at the bend of the diversion pipe 11.

[0063] When the amount of material being conveyed is large and the weight is heavy, the material completely pushes the rotating cone 35, causing the rotating cone 35 to move to the maximum stroke position, that is, the filter hole 38 completely overlaps and connects with the conveying port 39.

[0064] The controller starts the hydraulic cylinder, and the push rod of the hydraulic cylinder then moves the arc plate 25. The arc plate 25 moves along the push tube 24 to the push chamber 23, that is, the arc plate 25 disengages from the diversion tube 11. The arc plate 25 then moves to the bottom of the connecting tube 22. At this time, the connecting tube 22 is connected to the diversion tube 11 through the arc plate 25. That is, the connecting tube 22 acts as a pipeline for conveying the pushing gas, so that the gas conveyed in the connecting tube 22 is directly conveyed to the diversion tube 11 through the arc plate 25, directly pushing the material accumulated at the bend of the diversion tube 11, thereby clearing the diversion tube 11 and achieving the effect of preventing the accumulation of material at the bend of the pipeline.

[0065] 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 implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pneumatic conveying device with anti-accumulation function, characterized in that: It includes a conveying pipe (1), which is connected to an air pump for providing conveying gas. The conveying pipe (1) is also connected to a hopper. A diversion chamber (2) is provided on one side of the conveying pipe (1), and a plurality of diversion pipes (11) are provided on the side of the diversion chamber (2) away from the conveying pipe (1). A vent pipe (21) is provided between several of the aforementioned diversion pipes (11), the vent pipe (21) is connected to the bottom of the diversion cavity (2), and a drive assembly (3) is provided inside the diversion cavity (2); The vent pipe (21) is provided with a plurality of connecting pipes (22) on the side away from the drive assembly (3), and a push chamber (23) is provided between the plurality of the diversion pipes (11). A push pipe (24) is provided on the side of the push chamber (23) close to the diversion pipe (11), and an arc plate (25) is provided at the bend of the diversion pipe (11). The drive assembly (3) includes a fixed tube (31), a movable groove (32) is provided on the inner side of the fixed tube (31), and a movable tube (33) is provided in the movable groove (32); The top of the moving tube (33) is provided with a fixing block (34), the top of the fixing block (34) is provided with a rotating cone (35), the outside of the rotating cone (35) is provided with a plurality of blades (351), the bottom of the rotating cone (35) is provided with a protrusion (36), and a conveying impeller (37) is provided on the side of the protrusion (36) away from the fixing block (34).

2. The pneumatic conveying equipment with anti-accumulation function according to claim 1, characterized in that: A baffle (12) is provided on the side of the diversion pipe (11) near the diversion cavity (2), and the baffle (12) divides the diversion cavity (2) into several chambers.

3. A pneumatic conveying device with anti-accumulation function according to claim 1, characterized in that: One end of the connecting pipe (22) is connected to the vent pipe (21), and the other end of the connecting pipe (22) is connected to the diversion pipe (11).

4. A pneumatic conveying device with anti-accumulation function according to claim 3, characterized in that: The push tube (24) is connected to the branch tube (11) and the connecting tube (22) respectively.

5. A pneumatic conveying device with anti-accumulation function according to claim 4, characterized in that: The arc-shaped plate (25) is slidably connected to the push tube (24), and a hydraulic cylinder is provided inside the push cavity (23). The push rod of the hydraulic cylinder is connected to the arc-shaped plate (25).

6. A pneumatic conveying device with anti-accumulation function according to claim 1, characterized in that: The fixed tube (31) is located in the middle of the diversion cavity (2), and an inclined surface (26) is provided between the fixed tube (31) and the diversion cavity (2). The movable tube (33) is slidably connected to the movable groove (32), and a spring is provided between the movable tube (33) and the movable groove (32).

7. A pneumatic conveying device with anti-accumulation function according to claim 1, characterized in that: A motor is installed inside the fixed block (34), and a bevel gear is installed on the drive shaft of the motor. A transmission shaft is installed between the rotating cone (35) and the conveying impeller (37), and a transmission gear is also installed on the transmission shaft. The bevel gear meshes with the transmission gear.

8. A pneumatic conveying device with anti-accumulation function according to claim 1, characterized in that: The fixed tube (31) has a plurality of filter holes (38) on its side wall, and the moving tube (33) has a plurality of delivery ports (39) on its side wall.

9. A pneumatic conveying device with anti-accumulation function according to claim 5, characterized in that: The arc plate (25) is provided with a number of air holes, and a number of one-way rotating plates are provided on the side of the air holes near the diversion pipe (11).

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