An adaptive pressure-regulated anti-clogging silo pump dense phase conveying device
By incorporating a top feeding unit and a bottom fluidizing pipe structure into the silo pump, the problems of unevenness and easy wear of the fluidizing device are solved, resulting in a longer service life and stable material conveying.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PRATT (HENAN) DESIGN RES CO LTD
- Filing Date
- 2025-09-03
- Publication Date
- 2026-07-31
AI Technical Summary
The fluidization devices of existing silo pump dense phase conveying devices are prone to local airflow short-circuiting due to uneven pore distribution, forming 'dead beds' or 'channels', and are easily worn and stuck, resulting in short service life and inconvenient cleaning.
It adopts a fluidized pipe structure with the top connected to the feeding unit and the bottom placed in the lower part of the silo pump. The bottom side of the fluidized pipe has horizontal through holes, combined with the beveled design to reduce material impact and adhesion. It also prevents blockage through the variable diameter discharge pipe and intermittent air path design.
It improves fluidization uniformity, extends service life, reduces equipment wear and energy consumption, and enhances conveying stability and cleaning convenience.
Smart Images
Figure CN224577572U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of gas conveying devices, specifically to an adaptive pressure-regulating anti-clogging silo pump dense phase conveying device. Background Technology
[0002] A silo pump dense phase conveying system is a system that uses compressed air as a power source to intermittently and batch-transport dry powdery or fine granular materials in pipelines at a high solid-to-gas ratio (i.e., a large amount of material per unit volume of air). Silo pumps typically incorporate fluidizing devices, whose core function is to achieve fluidization through the interaction between airflow and material, thereby optimizing conveying efficiency. Existing fluidization devices include fluidizing discs / plates, fluidizing cones / chambers, etc. For example, Chinese invention patent CN101239677A, entitled "Down-draft Silo Pump," and Chinese invention patent CN110092103A, entitled "Silo Pump with Fluidization and Adjustable Output." These solutions, which use conical or plate-shaped structures as fluidization devices, may experience local airflow short-circuiting due to uneven pore distribution, forming "dead beds" or "channeling." They may also be easily worn by the fluidizing plates / discs due to direct impact from materials (such as abrasive particles from coal gangue), and are prone to agglomeration by sticky materials (such as cement), making replacement and cleaning troublesome and reducing service life. Therefore, there is a need for a silo pump dense phase conveying device that is easy to clean and has a long service life. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an adaptive pressure regulation anti-clogging dense phase conveying device for a silo pump. By setting a fluidizing pipe with the top connected to the feeding unit and the bottom placed in the lower part of the silo pump, the impact of materials on the fluidizing pipe is reduced, and adhesion is less likely to occur, resulting in uniform fluidization and thus improving service life.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: an adaptive pressure-regulating anti-clogging silo pump dense phase conveying device, comprising a gas storage tank, a gas control box and a silo pump connected in sequence, and a fluidization structure disposed within the silo pump; The silo pump includes a feeding unit, an exhaust unit, and an air intake unit located at the top; The fluidization structure includes a fluidization pipe that is fixedly connected to the top of the feeding unit; the fluidization pipe is arranged vertically, and the bottom of the fluidization pipe is located below the silo pump.
[0005] Furthermore, the feeding unit includes a feeding pipe and a valve installed on the feeding pipe; the exhaust unit includes an exhaust pipe and a valve installed on the exhaust pipe; a safety valve is installed on the exhaust pipe.
[0006] Furthermore, the lower part of the silo pump is tapered; several through holes are horizontally opened on the lower side of the fluidizing pipe.
[0007] Furthermore, the bottom of the fluidizing pipe is provided with a beveled surface.
[0008] Furthermore, an air inlet unit is provided on one side of the air storage tank; an air outlet connector is provided on the other side of the air storage tank, which is fixedly connected to one end of the first air inlet pipe; a drain outlet is provided at the bottom of the air storage tank; and a first air inlet connector is provided on one side of the air control box, which is fixedly connected to the other end of the first air inlet pipe.
[0009] Furthermore, the other side of the air control box is provided with a first air outlet connector, a replenishment air connector, and a second air outlet connector; the first air outlet connector is fixedly connected to one end of the first air outlet pipe, and the other end of the first air outlet pipe is fixedly connected to the air intake unit.
[0010] Furthermore, a discharge pipe is fixedly connected to the bottom of the silo pump; the discharge pipe includes a vertically arranged inlet section, a horizontally arranged outlet section, and a curved section that is fixedly connected to the inlet section and the outlet section; the inner and outer walls of the curved section are both arc-shaped, and the central angle corresponding to the arc is ninety degrees; the diameter of the curved section gradually decreases from the inlet section to the outlet section; the second air outlet connector is fixedly connected to one end of the second air outlet pipe, and the other end of the second air outlet pipe is fixedly connected to the outlet section.
[0011] Furthermore, the pneumatic control box is equipped with a third air outlet connector, and the outlet section is fixedly connected to a vertically arranged second air inlet connector; the third air outlet connector is connected to the second air inlet connector through a pipe; the silo pump is equipped with a level gauge; and the bottom of the silo pump is equipped with support legs.
[0012] The beneficial effects of this utility model are as follows: By setting up a fluidizing pipe with the top connected to the feeding unit and the bottom placed in the lower part of the silo pump, the material falls by gravity into the dispersion area of compressed air at the bottom of the silo pump. This not only reduces the impact of the material on the fluidizing pipe, but also makes it less prone to adhesion, resulting in uniform fluidization and thus improving service life. Replacement and cleaning are also convenient. Moreover, the gas forms a certain impact on the bottom of the fluidizing pipe, further preventing blockage and reducing material impact and adhesion. Setting up a variable diameter discharge pipe is beneficial for material transportation. Setting up an intermittently open air path to cut off the continuous material transportation and form a throttle flow transportation can reduce energy consumption, reduce equipment wear, and improve transportation stability. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure; Figure 2 This is a schematic diagram of a partial structure; Figure 3 This is a schematic diagram of the fluidization structure of a silo pump.
[0014] In the diagram: 1. Gas storage tank; 2. Gas storage tank inlet unit; 3. Drain outlet; 4. Gas storage tank outlet connector; 5. First inlet pipe; 6. First inlet connector; 7. Air control box; 8. Gas source interface; 9. First outlet connector; 10. First outlet pipe; 11. Make-up air connector; 12. Make-up air pipe; 13. Third outlet connector; 14. Second outlet connector; 15. Second outlet pipe; 16. Silo pump; 17. Feeding unit; 18. Exhaust unit; 19. Safety valve; 20. Level gauge; 21. Fluidized pipe; 22. Support leg; 23. Discharge pipe; 24. Flange; 25. Second inlet connector; 26. Outlet section; 27. Pushing pipe; 28. Inlet unit. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0016] The directional terms mentioned in this utility model, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this utility model, and are not intended to limit this utility model.
[0017] Example: like Figures 1-3 As shown, an adaptive pressure-regulated anti-clogging dense phase conveying device for a silo pump includes a gas storage tank 1, a gas control box 7, and a silo pump 16 connected in sequence, as well as a fluidization structure disposed within the silo pump 16. The silo pump 16 includes a feeding unit 17, an exhaust unit 18, and an air intake unit 28 disposed at the top; The fluidization structure includes a fluidization pipe 21 whose top is fixedly connected to the feeding unit 17; the fluidization pipe 21 is arranged vertically, and the bottom of the fluidization pipe 21 is located below the silo pump 16. Figure 1 The two pneumatic control boxes 7 shown are for ease of illustration; in reality, there is only one pneumatic control box 7, and the location of the pneumatic control box 7 is determined by installation requirements.
[0018] The feeding unit 17 includes a feeding pipe and a valve installed on the feeding pipe; the exhaust unit 18 includes an exhaust pipe and a valve installed on the exhaust pipe; the exhaust unit 18 also includes a pressure gauge, etc.; a safety valve 19 is installed on the exhaust pipe for timely exhaust when the exhaust pipe is blocked; the air inlet unit 28 includes an air inlet and a valve installed in the air inlet; the top of the fluidizing pipe 21 is fixedly connected to the bottom of the feeding pipe; the valve can be a valve that can be remotely controlled to open and close and to adjust the opening degree, such as a butterfly valve D941W-6P DN500CF8 or a ball valve Q941F-25C DN150.
[0019] The lower part of the silo pump 16 is tapered; the lower side of the fluidizing pipe 21 has several through holes that connect its interior and exterior.
[0020] The bottom of the fluidizing pipe 21 is provided with a beveled surface, which is formed by cutting off a corner from a point on the bottom end face of the fluidizing pipe at an angle.
[0021] A gas inlet unit 2 is provided on one side of the gas storage tank 1. The gas inlet unit 2 includes a gas inlet connector and a gas inlet pipe, such as... Figure 1 As shown, it is located on the left side of the gas storage tank 1; on the other side of the gas storage tank 1 opposite to the gas storage tank inlet unit 2, there is a gas storage tank outlet connector 4, which is fixedly connected to one end of the first inlet pipe 5; in this embodiment, each connector (outlet / inlet / filler connector, etc.) is generally equipped with a valve to control the on / off state; the bottom of the gas storage tank 1 is also equipped with a support leg 22; the bottom of the gas storage tank 1 is equipped with a drain port 3; the gas control box 7 is equipped with a first inlet connector 6 on one side, which is fixedly connected to the other end of the first inlet pipe 5.
[0022] On the other side of the air control box 7 opposite to the first air inlet connector 6, there are a first air outlet connector 9, a replenishment air connector 11, and a second air outlet connector 14; on the same side, there is also an air source interface 8 for the valves (such as ball valves) on the chamber pump 16; the first air outlet connector 9 is fixedly connected to one end of the first air outlet pipe 10, and the other end of the first air outlet pipe 10 is fixedly connected to the air inlet unit 28; the replenishment air connector 11 is connected to an external air source through the replenishment air pipe 12.
[0023] The bottom of the silo pump 16 is fixedly connected to a discharge pipe 23; the discharge pipe 23 includes a vertically arranged inlet section, a horizontally arranged outlet section 26, and a curved section fixedly connecting the inlet section and the outlet section 26; the inner and outer walls of the curved section are both arc-shaped, and the central angle corresponding to the arc is ninety degrees; the diameter of the curved section gradually decreases from the inlet section to the outlet section 26; the second air outlet connector 14 is fixedly connected to one end of the second air outlet pipe 15, and the other end of the second air outlet pipe 15 is fixedly connected to the outlet section 26; a pusher pipe 27 extending in the opposite direction to the outlet section 26 is fixedly connected at the connection between the outlet section 26 and the curved section, and the second air outlet pipe 15 is connected to the outlet section 26 through the pusher pipe 27, so that the air jet direction is horizontal and the same as the material discharge direction; the inlet section can be integrally set with the curved section, in which case the inlet section is connected to the bottom of the silo pump 16 through a flange 24, and the inlet section can be integrally set with the bottom of the silo pump 16, in which case... Figure 3 The inlet section shown is connected to the curved section via flange 24.
[0024] The pneumatic control box 7 is equipped with a third air outlet connector 13, and the outlet section 26 is fixedly connected to a vertically arranged second air inlet connector 25; the third air outlet connector 13 is connected to the second air inlet connector 25 through a pipe; the silo pump 16 is equipped with a level gauge 20; and the bottom of the silo pump 16 is equipped with support legs 22. During discharge, compressed air is introduced into the push pipe 27 to push material into the outlet section 26, while the second air inlet connector 25 is intermittently opened, causing the material in the outlet section 26 to form a spur flow.
[0025] By setting up a fluidizing pipe 21 with the top connected to the feeding unit 17 and the bottom placed inside the lower part of the silo pump 16, the material falls by gravity into the dispersion area of compressed air at the bottom of the silo pump. This not only reduces the impact of the material on the fluidizing pipe, but also makes it less prone to sticking, resulting in uniform fluidization and thus improving service life. Replacement and cleaning are also convenient. Moreover, the gas creates a certain impact on the bottom of the fluidizing pipe, further preventing blockage and reducing material impact and sticking. Setting up a variable diameter discharge pipe is beneficial for material transportation. Setting up an intermittently open air path to cut off the continuous material transportation and form a throttle flow can reduce energy consumption, reduce equipment wear, and improve transportation stability.
[0026] The working process of the silo pump 16 is as follows: During feeding, the exhaust unit 18 and the feeding unit 17 are opened. Once feeding is complete, both the exhaust unit and the feeding valve are closed, and the pump is pressurized. When the pressure reaches a certain parameter, the valve on the discharge pipe 23 opens, and the current batch is conveyed. When the pressure gauge detects that the pressure has reached a certain value, the air intake unit 28 stops air intake, and the butterfly valve on the discharge pipe closes. Feeding is repeated for the next batch. The working process of the silo pump 16 is basically well-known in the art.
[0027] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. A clog-resistant, pressure-regulating, dense-phase conveying device for a silo pump, characterized in that: It includes a gas storage tank (1), a gas control box (7) and a silo pump (16) connected in sequence, as well as a fluidization structure installed in the silo pump (16); The silo pump (16) includes a feeding unit (17), an exhaust unit (18) and an air intake unit (28) located at the top. The fluidization structure includes a fluidization pipe (21) whose top is fixedly connected to the feeding unit (17); the fluidization pipe (21) is arranged vertically, and the bottom of the fluidization pipe (21) is located below the silo pump (16).
2. The adaptive pressure regulation anti-clogging silo pump dense phase conveying device according to claim 1, characterized in that: The feeding unit (17) includes a feeding pipe and a valve installed on the feeding pipe; the exhaust unit (18) includes an exhaust pipe and a valve installed on the exhaust pipe; a safety valve (19) is installed on the exhaust pipe.
3. The adaptive pressure regulation anti-clogging silo pump dense phase conveying device according to claim 1, characterized in that: The lower part of the silo pump (16) is tapered; the lower side of the fluidizing pipe (21) has several through holes horizontally.
4. The adaptive pressure regulation anti-clogging silo pump dense phase conveying device according to claim 3, characterized in that: The bottom of the fluidizing pipe (21) is provided with a beveled surface.
5. The adaptive pressure regulation anti-clogging silo pump dense phase conveying device according to claim 1, characterized in that: The gas storage tank (1) is provided with a gas storage tank inlet unit (2) on one side; the gas storage tank (1) is provided with a gas storage tank outlet connector (4) on the other side, and the gas storage tank outlet connector (4) is fixedly connected to one end of the first inlet pipe (5); the gas storage tank (1) is provided with a drain outlet (3) at the bottom; the gas control box (7) is provided with a first inlet connector (6) on one side, and the first inlet connector (6) is fixedly connected to the other end of the first inlet pipe (5).
6. The adaptive pressure regulation anti-clogging silo pump dense phase conveying device according to claim 5, characterized in that: The other side of the air control box (7) is provided with a first air outlet connector (9), an air replenishment connector (11), and a second air outlet connector (14); the first air outlet connector (9) is fixedly connected to one end of the first air outlet pipe (10), and the other end of the first air outlet pipe (10) is fixedly connected to the air intake unit (28).
7. The adaptive pressure regulation anti-clogging silo pump dense phase conveying device according to claim 6, characterized in that: The bottom of the silo pump (16) is fixedly connected to a discharge pipe (23); the discharge pipe (23) includes a vertically arranged inlet section, a horizontally arranged outlet section (26), and a curved section that is fixedly connected to the inlet section and the outlet section (26); the inner and outer walls of the curved section are both arc-shaped, and the central angle corresponding to the arc is ninety degrees; the diameter of the curved section gradually decreases from the inlet section to the outlet section (26); the second air outlet connector (14) is fixedly connected to one end of the second air outlet pipe (15), and the other end of the second air outlet pipe (15) is fixedly connected to the outlet section (26).
8. The adaptive pressure regulation anti-clogging silo pump dense phase conveying device according to claim 7, characterized in that: The pneumatic control box (7) is provided with a third air outlet connector (13), and the outlet section (26) is fixedly connected with a vertically arranged second air inlet connector (25); the third air outlet connector (13) is connected to the second air inlet connector (25) through a pipe; the silo pump (16) is provided with a level gauge (20); and the bottom of the silo pump (16) is provided with a support leg (22).