Anti-clogging in-line hopper pump

By combining the design of rotating jet nozzles and airflow fluidization, the clogging problem of the central hopper pump when conveying powder materials is solved, realizing dynamic loosening of materials and stable discharge, and extending the service life of the equipment.

CN224547439UActive Publication Date: 2026-07-24WUXI TIANRUI ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUXI TIANRUI ENVIRONMENTAL PROTECTION TECH CO LTD
Filing Date
2025-08-19
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing center-type silo pumps are prone to clogging when conveying powder materials that are highly abrasive, have poor flowability, and are sticky, due to material accumulation at the bottom of the silo, which affects the feeding effect.

Method used

The design combines rotary jet orifices with airflow fluidization to keep the material loose by dynamically purging it, and a check valve is installed on the L-shaped pipe to ensure unidirectional airflow and prevent backflow from affecting the equipment.

Benefits of technology

It effectively avoids material blockage, improves discharge efficiency, and extends the service life of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of anti-clogging middle lead type bin pump, including bin body, the top open place of bin body is connected with feed pipe, the bottom end of bin body is connected with discharge pipe, the position of one end of discharge pipe in bin body bottom is movably connected with connecting pipe, the bottom end of connecting pipe passes through discharge pipe and is keyed with first gear, the bottom of discharge pipe is equipped with the power component of driving first gear rotation, multiple air injection holes are set up on the connecting pipe, one end of connecting pipe that extends discharge pipe is fixedly connected with swivel joint, the bottom end of swivel joint is fixedly connected with L type pipe, the power component includes fixed frame, fixed frame is welded on the bottom outer wall of discharge pipe, the utility model not only can pass through rotating air injection+air flow fluidization dual effect, avoid the plugging problem caused by material accumulation due to traditional bin pump, also can ensure that the airflow unidirectionally acts on clearing by check valve L type pipe into.
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Description

Technical Field

[0001] This utility model relates to the field of silo pump technology, and in particular to an anti-clogging central-draft silo pump. Background Technology

[0002] A centrally operated silo pump is a pneumatic conveying device mainly used for conveying powdery materials that are highly abrasive, have poor flowability, and are sticky, such as boiler fly ash and foundry sand. Its core function is to achieve efficient and stable material conveying and reduce wear and pollution during the conveying process.

[0003] Because the silo itself has a large volume, when there is a lot of powdery material inside the silo, the material at the bottom of the silo is under great pressure. Long-term accumulation can easily cause the powdery material to arch and block the discharge port, which can affect the feeding of the silo pump. In order to better deal with the above problems, promote the development of the industry's technical level, and improve core competitiveness, this application proposes a new composition structure that is different from the existing technology. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anti-clogging central-draft silo pump.

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

[0006] A clog-resistant, centrally driven silo pump includes a silo body. A feed pipe is fixedly connected to the top opening of the silo body, and a discharge pipe is fixedly connected to the bottom end of the silo body. One end of the discharge pipe is movably connected to a connecting pipe at the bottom of the silo body. The bottom end of the connecting pipe passes through the discharge pipe and is keyed to a first gear. A power assembly for driving the first gear to rotate is provided at the bottom of the discharge pipe. Multiple air jet holes are opened on the connecting pipe. A rotary joint is fixedly connected to the end of the connecting pipe extending out of the discharge pipe. An L-shaped pipe is fixedly connected to the bottom end of the rotary joint.

[0007] As a further embodiment of this utility model, the power assembly includes a fixed frame, which is fixed to the bottom outer wall of the discharge pipe. A motor is fixedly connected to the bottom of the fixed frame, and a second gear is movably connected to the fixed frame. One end of the motor output shaft passes through the fixed frame and is fixed to the second gear, and the first gear meshes with the second gear.

[0008] As a further embodiment of this utility model, a second feed valve is fixedly connected to the pipe at the top of the silo, and a first feed valve is fixedly connected to the feed pipe.

[0009] As a further embodiment of this utility model, the top of the chamber is provided with an air inlet and an air outlet, and an air inlet pipe and an air outlet pipe are respectively connected and fixed inside the air inlet and the air outlet.

[0010] As a further improvement of this utility model, control valves are fixed on both the air inlet pipe and the air outlet pipe.

[0011] As a further embodiment of this utility model, a discharge pipe is fixedly connected to the bottom of the hopper, and a discharge valve is fixedly connected to the discharge pipe.

[0012] As a further improvement of this invention, a check valve is fixedly connected to the L-shaped pipe.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. In this utility model, the dual action of rotary jet and airflow fluidization is used. The rotating jet hole dynamically blows the inside of the discharge pipe, and the air pressure inside the silo keeps the material in a loose state, avoiding the blockage problem caused by material accumulation in traditional silo pumps, thus improving the discharge effect of the device.

[0015] 2. This utility model, by setting a check valve on the L-shaped pipe, allows the airflow entering the L-shaped pipe to act unidirectionally on the unblocking, avoiding backflow of airflow from affecting other components of the equipment, further ensuring the stability of the unblocking function and extending the service life of the equipment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an anti-clogging central-draft silo pump proposed in this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the silo body of an anti-clogging central-draft silo pump proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the connecting pipe structure of an anti-clogging central-draft silo pump proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the rotary joint structure of an anti-clogging central-draft silo pump proposed in this utility model.

[0020] In the diagram: 1. Discharge valve; 2. Inlet pipe; 3. Control valve; 4. Outlet pipe; 5. Feed pipe; 6. First feed valve; 7. Second feed valve; 8. Chamber body; 9. Discharge pipe; 10. Connecting pipe; 11. First gear; 12. L-shaped pipe; 13. Check valve; 14. Rotary joint; 15. Fixing frame; 16. Second gear; 17. Air jet hole. Detailed Implementation

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Therefore, all other embodiments of this application described herein, and all embodiments obtained by those skilled in the art without creative effort based on the embodiments in this application, should fall within the scope of protection of this application.

[0022] Reference Figures 1-4 A clog-resistant central-draft silo pump includes a silo body 8. A feed pipe 5 is fixedly connected to the top opening of the silo body 8, and a discharge pipe 9 is fixedly connected to the bottom end of the silo body 8. One end of the discharge pipe 9 is located at the bottom of the silo body 8 and is rotatably connected to a connecting pipe 10 via a bearing. The bottom end of the connecting pipe 10 passes through the discharge pipe 9 and is keyed to a first gear 11. A power assembly for driving the first gear 11 to rotate is provided at the bottom of the discharge pipe 9.

[0023] The power assembly includes a fixed frame 15, which is welded to the bottom outer wall of the discharge pipe 9. A motor is fixed to the bottom of the fixed frame 15 by bolts. A second gear 16 is rotatably connected to the fixed frame 15. One end of the motor output shaft passes through the fixed frame 15 and is fixed to the second gear 16. The first gear 11 meshes with the second gear 16. When the motor rotates, the second gear 16 drives the first gear 11 to rotate.

[0024] Multiple evenly distributed stirring rods are welded onto the connecting pipe 10. Multiple air jet holes 17 are opened on the connecting pipe 10. A one-way valve is installed in the air jet hole 17. A rotary joint 14 is fixed to one end of the connecting pipe 10 that extends out of the discharge pipe 9 by bolts. The rotary joint 14 includes a convex tube and a concave tube. The convex tube and the concave tube are connected by a bearing. An L-shaped tube 12 is fixed to the bottom end of the rotary joint 14 by bolts. A check valve 13 is fixed to the L-shaped tube 12 by bolts. The check valve 13 ensures that the airflow acts unidirectionally to clear the blockage. The L-shaped tube 12 is sealed to an external air pump. The air inlet pressure is greater than the opening pressure of the one-way valve.

[0025] The rotation of the first gear 11 causes the connecting pipe 10 to drive the jet nozzle 17 to rotate and spray air, which further disperses the material in the discharge pipe 9 and prevents the material in the discharge pipe 9 from becoming blocked.

[0026] In this utility model, it should be noted that a first feed valve 6 is fixed on the feed pipe 5, and a second feed valve 7 is fixed on the pipe at the top of the silo body 8 by bolts. An air inlet and an air outlet are opened at the top of the silo body 8. An air inlet pipe 2 and an air outlet pipe 4 are respectively connected and fixed in the air inlet and the air outlet pipe. A control valve 3 is fixed on both the air inlet pipe 2 and the air outlet pipe 4. The control valve 3 facilitates the staff to open and close the air inlet pipe 2 and the air outlet pipe 4.

[0027] Gas is introduced into the chamber 8 through the air inlet pipe 2 via an external gas supply device, thereby causing the material in the chamber 8 to be propelled by the compressed gas, making the material fluidized and discharged through the discharge pipe 9. The discharge pipe 9 is fixed with a discharge valve 1 by bolts.

[0028] Working principle: When materials need to be conveyed, the feed pipe 5 is connected to the external silo, and the air inlet pipe 2 is connected to the external air supply device.

[0029] Feeding stage: Open the first feed valve 6 and the second feed valve 7, and open the control valve 3 on the air outlet pipe 4 to allow the material in the external hopper to enter the hopper body 8 through the feed pipe 5.

[0030] Pressurized fluidization: Open the control valve 3 on the air inlet pipe 2, close the control valve 3 on the air outlet pipe 4, open the discharge valve 1, and allow gas to enter the silo 8 through the air inlet pipe 2 via the external air supply device. This causes the material in the silo 8 to be propelled by the compressed gas, fluidizing the material and discharging it through the discharge pipe 9.

[0031] Fix the L-shaped pipe 12 to the external gas supply device so that the gas enters the connecting pipe 10 through the L-shaped pipe 12 and is discharged through the jet hole 17. At the same time, start the motor. The rotation of the motor causes the second gear 16 to drive the first gear 11 to rotate, thereby causing the connecting pipe 10 to rotate and jet the jet hole 17 to spray gas, so that the gas blows away the material in the discharge pipe 9 and prevents the material in the discharge pipe 9 from being blocked.

[0032] This utility model has been described through the above embodiments. Those skilled in the art will understand that this utility model is not limited to the above embodiments. Many more modifications can be made based on the teachings of this utility model, and all such modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A clog-resistant central-draft silo pump, comprising a silo body (8), characterized in that, A feed pipe (5) is fixedly connected to the top opening of the silo body (8), and a discharge pipe (9) is fixedly connected to the bottom end of the silo body (8). One end of the discharge pipe (9) is movably connected to a connecting pipe (10) at the bottom of the silo body (8). The bottom end of the connecting pipe (10) passes through the discharge pipe (9) and is keyed to a first gear (11). The bottom of the discharge pipe (9) is provided with a power component that drives the first gear (11) to rotate. Multiple air jet holes (17) are opened on the connecting pipe (10). A rotary joint (14) is fixedly connected to one end of the connecting pipe (10) that extends out of the discharge pipe (9). An L-shaped pipe (12) is fixedly connected to the bottom end of the rotary joint (14).

2. The anti-clogging central-draft silo pump according to claim 1, characterized in that, The power assembly includes a fixed frame (15), which is fixed on the bottom outer wall of the discharge pipe (9). A motor is fixedly connected to the bottom of the fixed frame (15). A second gear (16) is movably connected to the fixed frame (15), and one end of the motor output shaft passes through the fixed frame (15) and is fixed to the second gear (16). The first gear (11) meshes with the second gear (16).

3. The anti-clogging central-draft silo pump according to claim 1, characterized in that, A second feed valve (7) is fixedly connected to the pipe at the top of the silo (8), and a first feed valve (6) is fixedly connected to the feed pipe (5).

4. The anti-clogging central-draft silo pump according to claim 1, characterized in that, The top of the chamber (8) is provided with an air inlet and an air outlet, and an air inlet pipe (2) and an air outlet pipe (4) are respectively connected and fixed inside the air inlet and the air outlet.

5. A clog-resistant central-draft silo pump according to claim 4, characterized in that, Control valves (3) are fixed on both the air inlet pipe (2) and the air outlet pipe (4).

6. A clog-resistant central-draft silo pump according to claim 1, characterized in that, The bottom of the silo (8) is connected to a discharge pipe (9), and a discharge valve (1) is fixedly connected to the discharge pipe (9).

7. A clog-resistant central-draft silo pump according to claim 1, characterized in that, A check valve (13) is fixedly connected to the L-shaped pipe (12).