Anti-clogging screw conveyor

Abstract

The utility model relates to a conveying machine related field especially, and more particularly relates to a kind of anti-clogging screw conveyer, including cylinder, feed frame, discharge pipe, hollow casing, spiral conveying rod, fixed cylinder, piston, collar, spring, high-pressure spray head, high-pressure gas pipe, pulse solenoid valve, air inlet pipe and exhaust pipe etc.The utility model injects gas into fixed cylinder by air inlet pipe, piston is moved inwards under the action of gas pressure, and piston drives high-pressure spray head to move inwards into discharge pipe, high-pressure gas is injected into high-pressure spray head by high-pressure gas pipe, high-pressure gas is sprayed upwards, building material blocked at the junction of discharge pipe and cylinder is broken up and then falls under the action of high-pressure gas, to realize the quick cleaning of blocked material under the condition that screw conveyer does not stop, reduce the workload of staff, improve the conveying efficiency of screw conveyer.

Description

Technical Field

[0001] This utility model relates to the field of conveyors, and in particular to an anti-clogging screw conveyor. Background Technology

[0002] Building materials refer to all kinds of materials used in the construction, maintenance, and decoration of buildings and structures. Building materials such as lime, mineral powder, and gypsum are often transported using screw conveyors. Screw conveyors can achieve continuous and stable material transport. Compared with manual handling, they can transport a large amount of building materials per unit time, ensuring the timely supply of materials in the construction or production process and improving overall work efficiency.

[0003] When a screw conveyor is in use, some building materials, such as cement and lime, have a certain degree of hygroscopicity. During the conveying process, they may absorb moisture from the air and clump together. When these clumps reach the discharge port of the screw conveyor, they may become too large to pass through smoothly, thus accumulating at the outlet and causing blockage. If the screw conveyor is moving too fast, the conveyed material may accumulate at the discharge port due to insufficient time to discharge, which can also easily cause blockage. When a screw conveyor is blocked, the material cannot pass through steadily. The common practice is to stop the screw conveyor and have staff clear the blockage. However, stopping the machine to clear the blockage not only increases the workload of the staff but also affects work efficiency. Summary of the Invention

[0004] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides an anti-clogging screw conveyor to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an anti-clogging screw conveyor, comprising a cylinder, a feed frame, a discharge pipe, a hollow shell, a screw conveying rod, a fixed cylinder, a piston, a collar, a spring, a high-pressure nozzle, a high-pressure air pipe, an air inlet pipe, and an exhaust pipe; the discharge pipe is connected to the front end of the bottom of the cylinder, and the screw conveying rod is rotatably installed inside the cylinder; the feed frame is installed at the feed inlet at the rear end of the top of the cylinder; The discharge pipe is fitted with a hollow shell, and several fixed cylinders are installed inside the hollow shell. Several air inlet pipes and several air outlet pipes are fixedly inserted through the hollow shell, and the air inlet pipes and several air outlet pipes are respectively inserted into the several fixed cylinders one by one. A piston is slidably installed inside the fixed cylinder. The piston moves through the inner side of the collar installed on the inner ring of the fixed cylinder. The piston is connected to the collar by a spring. One end of the piston faces the intake pipe and the exhaust pipe, while the other end moves through the side surface of the discharge pipe. A high-pressure nozzle is installed inside the piston, with the air outlet of the high-pressure nozzle facing upwards. When the air inlet pipe fills the fixed cylinder with air, the piston drives the high-pressure nozzle to extend into the discharge pipe. The air inlet of the high-pressure nozzle is connected to a high-pressure air pipe.

[0006] Preferably, the feed frame has a conical structure that is wider at the top and narrower at the bottom.

[0007] Preferably, the end of the piston away from the intake and exhaust pipes is a concave arc shape, and when the spring is in its natural state, the end of the piston away from the intake and exhaust pipes is flush with the inner ring of the discharge pipe.

[0008] Preferably, an O-ring is embedded in the side surface of the piston, and the outer ring of the O-ring fits against the inner ring of the fixed cylinder.

[0009] Preferably, the O-ring is made of silicone.

[0010] Preferably, a pulse solenoid valve is installed on the high-pressure air pipe.

[0011] Preferably, a solenoid valve is installed on both the intake pipe and the exhaust pipe.

[0012] The beneficial effects of this utility model are: This invention injects gas into a fixed cylinder through an air inlet pipe. The piston moves inward under the pressure of the gas, and the piston drives the high-pressure nozzle to move inward into the discharge pipe. High-pressure gas is injected into the high-pressure nozzle through a high-pressure air pipe. The high-pressure gas is sprayed upward, and the construction material blocked at the connection between the discharge pipe and the cylinder is broken up and falls off by the high-pressure gas. This allows for the rapid clearing of blocked materials without stopping the screw conveyor, reducing the workload of workers and improving the conveying efficiency of the screw conveyor. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the screw conveyor structure of this utility model; Figure 2 This is a side view sectional structural diagram of the screw conveyor of this utility model; Figure 3 This is a schematic diagram of the hollow shell connection structure from a top view. Figure 4 This is a bottom view schematic diagram of the hollow shell connection structure of this utility model.

[0014] The components include: cylinder-1, feed frame-2, discharge pipe-3, hollow shell-4, screw conveyor rod-5, fixed cylinder-6, piston-7, collar-8, spring-9, high-pressure nozzle-10, high-pressure air pipe-11, pulse solenoid valve-12, air inlet pipe-13, exhaust pipe-14, O-ring seal-15, and solenoid valve-16. Detailed Implementation

[0015] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0016] like Figures 1 to 4 As shown, this utility model provides an anti-clogging screw conveyor, including a cylinder 1, a feed frame 2, a discharge pipe 3, a hollow shell 4, a screw conveyor 5, a fixed cylinder 6, a piston 7, a collar 8, a spring 9, a high-pressure nozzle 10, a high-pressure air pipe 11, an air inlet pipe 13, and an exhaust pipe 14; the discharge pipe 3 is connected to the bottom front end of the cylinder 1, and the screw conveyor 5 is rotatably installed inside the cylinder 1; the feed frame 2 is installed at the feed inlet at the top rear end of the cylinder 1, and a motor (not shown in the figure) is installed on the cylinder 1 to drive the screw conveyor 5 to rotate. A hollow shell 4 is fixedly sleeved on the discharge pipe 3. Six fixed cylinders 6 are installed inside the hollow shell 4 in a ring with equal spacing. Several air inlet pipes 13 and several air outlet pipes 14 are fixedly inserted through the hollow shell 4. The six air inlet pipes 13 and six air outlet pipes 14 are inserted into the six fixed cylinders 6 one by one. That is, each fixed cylinder 6 is connected to an air inlet pipe 13 and an air outlet pipe 14. The air inlet pipe 13 is connected to an air inlet device for injecting gas into the fixed cylinder 6. A piston 7 is slidably installed inside the fixed cylinder 6. The piston 7 moves through the inner side of the collar 8 installed on the inner ring of the fixed cylinder 6. The piston 7 is connected to the collar 8 through a spring 9. One end of piston 7 is directly opposite the intake pipe 13 and the exhaust pipe 14, and the other end moves through the side surface of the discharge pipe 3. A high-pressure nozzle 10 is fixedly embedded in the top of the piston 7. The air outlet end of the high-pressure nozzle 10 is set upward. When the air inlet pipe 13 fills the fixed cylinder 6 with air, the piston 7 drives the high-pressure nozzle 10 to extend into the discharge pipe 3. The air inlet end of the high-pressure nozzle 10 is connected to a high-pressure air pipe 11.

[0017] Among them, the feed frame 2 has a cone-shaped structure that is larger at the top and smaller at the bottom, which makes it convenient to guide the material to be conveyed into the feed frame 2; Among them, the end of the piston 7 away from the air inlet pipe 13 and the exhaust pipe 14 is a concave arc shape. When the spring 9 is in the natural state, the end of the piston 7 away from the air inlet pipe 13 and the exhaust pipe 14 is flush with the inner ring of the discharge pipe 3, which makes it easy for the piston 7 to retract into the fixed cylinder 6 and prevent the piston 7 from affecting the stable falling of the material. In this embodiment, an O-ring 15 is embedded on the side surface of the piston 7. The outer ring of the O-ring 15 fits against the inner ring of the fixed cylinder 6. The O-ring 15 is made of silicone. The silicone O-ring 15 improves the sealing performance between the piston 7 and the fixed cylinder 6, which is conducive to the stable movement of the piston 7 within the fixed cylinder 6 by the gas. In this embodiment, a pulse solenoid valve 12 is installed on the high-pressure gas pipe 11 to control the on / off of high-pressure gas in the high-pressure gas pipe 11. In this embodiment, a solenoid valve 16 is installed on the intake pipe 13 and the exhaust pipe 14 respectively, and the solenoid valve 16 controls the flow of gas in the intake pipe 13 and the exhaust pipe 14. In this embodiment, the high-pressure cylinder 11 is a polyurethane tube, which has excellent flexibility and good pressure-bearing capacity. It should be noted that hollow shell 4, fixed cylinder 6, piston 7, collar 8, spring 9, high-pressure nozzle 10, high-pressure air pipe 11, air inlet pipe 13, exhaust pipe 14, etc. can also be selectively installed on the feed frame 2 to facilitate the clearing of blocked materials in the feed frame 2, and adjustments can be made according to the shape and size of the feed frame 2, which will not be elaborated further. Specifically, the material to be conveyed is introduced into the cylinder 1 through the feed frame 2, the screw conveyor 5 is driven to rotate by the start motor to convey the material, and the material is discharged downward through the discharge pipe 3 to complete the conveying of the building material; When a blockage occurs at the connection between the discharge pipe 3 and the cylinder 1, gas is injected into the fixed cylinder 6 through the air inlet pipe 13. The piston 7, under pressure, moves along the inner side of the fixed cylinder 6, and the piston 7 drives the high-pressure nozzle 10 to move inward into the discharge pipe 3. The spring 9 is elastically compressed by the piston 7, at which point the pulse solenoid valve 12 opens. The externally connected high-pressure air pipe 11 is then connected to a pneumatic device that introduces high-pressure gas into the high-pressure air pipe 11, which is then sprayed upward through the high-pressure nozzle 10. The material blocked at the connection between the discharge pipe 3 and the cylinder 1 is dispersed and falls off by the high-pressure gas, thus clearing the blockage in the screw conveyor. The system operates smoothly, and due to the presence of a pulse solenoid valve 12, when the pulse solenoid valve 12 is closed, high-pressure gas accumulates in the high-pressure gas pipe 11. When the pulse solenoid valve 12 opens instantaneously, the gas bursts out in a very short time, and its impact force far exceeds that of the steady-state airflow, which is beneficial for clearing blocked materials. When the solenoid valve 16 on the exhaust pipe 14 is opened and the solenoid valve 16 on the inlet pipe 13 is closed, the gas in the fixed cylinder 6 is discharged outward through the exhaust pipe 14. At this time, the piston 7 and the high-pressure nozzle 10 are moved outward by the elastic force of the spring 9 and disengage from the inside of the discharge pipe 3 to facilitate the stable discharge of materials from the discharge pipe 3.

[0018] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A clog-resistant screw conveyor, comprising a cylinder, a feed frame installed at the feed inlet at the top of the cylinder, a discharge pipe connected to the bottom of the cylinder away from the feed frame, and a screw conveyor rod movably installed inside the cylinder; Its features are, The discharge pipe is fitted with a hollow shell, and several fixed cylinders are installed inside the hollow shell. Several air inlet pipes and several air outlet pipes are fixedly inserted through the hollow shell, and the air inlet pipes and several air outlet pipes are respectively inserted into the several fixed cylinders one by one. A piston is slidably installed inside the fixed cylinder. The piston moves through the inner side of the collar installed on the inner ring of the fixed cylinder. The piston is connected to the collar by a spring. One end of the piston faces the intake pipe and the exhaust pipe, while the other end moves through the side surface of the discharge pipe. A high-pressure nozzle is installed inside the piston, with the air outlet of the high-pressure nozzle facing upwards. When the air inlet pipe fills the fixed cylinder with air, the piston drives the high-pressure nozzle to extend into the discharge pipe. The air inlet of the high-pressure nozzle is connected to a high-pressure air pipe.

2. The anti-clogging screw conveyor according to claim 1, characterized in that: The feed frame has a conical structure that is wider at the top and narrower at the bottom.

3. The anti-clogging screw conveyor according to claim 1, characterized in that: The end of the piston away from the intake and exhaust pipes is a concave arc shape. When the spring is in its natural state, the end of the piston away from the intake and exhaust pipes is flush with the inner ring of the discharge pipe.

4. The anti-clogging screw conveyor according to claim 1, characterized in that: An O-ring is embedded in the side surface of the piston, and the outer ring of the O-ring fits against the inner ring of the fixed cylinder.

5. The anti-clogging screw conveyor according to claim 4, characterized in that: The O-ring is made of silicone.

6. The anti-clogging screw conveyor according to claim 1, characterized in that: A pulse solenoid valve is installed on the high-pressure gas pipe.

7. The anti-clogging screw conveyor according to claim 1, characterized in that: Each of the intake and exhaust pipes is equipped with a solenoid valve.

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