Material unloading anti-blocking device

Abstract

The utility model relates to the technical field of chemical production equipment especially is concerned on a material unloading anti -blocking device, it includes air cannon and hole switch mechanism, the support is fixedly connected on the outer wall of the hopper, air cannon is installed on the support, and the air cannon is installed with the air inlet pipe, the air outlet pipe and solenoid valve, the hole switch mechanism includes fixed box and air cylinder, the air outlet pipe is connected with the inside of fixed box, the air hole is seted up on the side wall of hopper, and the air hole is located in the inside of fixed box, and the slide hole is seted up on the side wall of fixed box, and the cylinder piston rod is connected with the hole baffle that slides and is seted up in the slide hole and moves and closes the air hole, and the cylinder and solenoid valve are electrically connected with the PLC control box. Compared with the prior art, by air cannon to the hopper inside jet high pressure airflow, make the material that adheres at the hopper side wall instantaneous separation, solved the material in the hopper side wall accumulation and formed the problem of caking, blocking the outlet, reduced the cost of using manual dredging or cleaning, guaranteed the normal operation of equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of chemical production equipment, and in particular to a material feeding anti-blocking device. Background Technology

[0002] Before being conveyed by the conveyor belt, materials need to be continuously fed through a conical hopper. As the material is discharged downwards through the conical hopper, it forms a funnel-shaped flow. Due to frictional resistance between materials and the influence of their own gravity, the velocity along the cross-section of the hopper is not uniform. At the same cross-section, the velocity in the middle of the hopper is significantly greater than the velocity near the sidewalls. This causes the material near the sidewalls to clump together, resulting in blockage of the discharge port, greatly affecting the discharge efficiency and thus hindering the normal material transport of the conveyor belt. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the present invention provides a material feeding anti-blocking device.

[0004] The material feeding anti-blocking device provided by this utility model adopts the following technical solution: A material discharge anti-blocking device includes an air cannon and an orifice switching mechanism. A bracket is fixedly connected to the outer wall of the discharge hopper, and the air cannon is mounted on the bracket. The air cannon is equipped with an air inlet pipe, an air outlet pipe, and a solenoid valve. The orifice switching mechanism includes a fixed box and a cylinder fixed to the outer wall of the discharge hopper. The air outlet pipe is connected to the inside of the fixed box. A vent hole is opened on the side wall of the discharge hopper and is located inside the fixed box. A sliding hole is opened on the side wall of the fixed box. The piston rod of the cylinder is connected to a baffle plate that slides through the sliding hole and movably closes the vent hole. The cylinder and the solenoid valve are electrically connected to a PLC control box.

[0005] By adopting the above technical solution, compared with the prior art, this utility model sprays high-pressure airflow into the conical hopper through an air cannon, causing the material adhering to the side wall of the hopper to detach instantly. This solves the problem of material accumulating on the side wall of the hopper, forming clumps and blocking the outlet, reducing the cost of manual unblocking or cleaning, and ensuring the normal operation of the equipment.

[0006] Preferably, a partition is vertically fixed in the center of the fixed box, which divides the internal area of ​​the fixed box into two cavities. Each cavity corresponds to a vent hole. The cylinder piston rod is connected to an inverted U-shaped connecting rod, and baffle plates are fixed to the two arms of the connecting rod.

[0007] By adopting the above technical solution, multiple vents can be set to ensure that the inside of the hopper is subjected to uniform air blowing, thereby further improving the anti-clogging effect.

[0008] Preferably, the piston rod end of the cylinder is fixedly connected to an inverted U-shaped connecting plate, and the connecting rod is fixedly installed in the connecting plate by bolts.

[0009] By adopting the above technical solution, it is easy to connect the cylinder piston rod to the connecting rod using a connecting plate and bolts.

[0010] Preferably, a sealing ring is embedded in the inner wall of the sliding hole.

[0011] By adopting the above technical solution, the sealing performance between the baffle plate and the fixed box is improved.

[0012] Preferably, two guide plates are provided in the fixed box for each vent hole. The guide plates have an L-shaped cross-section, with one end fixed vertically to the outer wall of the hopper and the other end suspended and parallel to the outer wall of the hopper. The vent hole is located between the two guide plates, and the baffle plate is slidably disposed between the two guide plates.

[0013] By adopting the above technical solution, the fixed end of the guide plate limits the movement trajectory of the baffle plate, while the suspended end of the guide plate applies pressure to the baffle plate, making the baffle plate fit tightly against the outer wall of the hopper, thus improving the sealing performance of the baffle plate to the vent.

[0014] Preferably, the bottom of the fixed box is provided with a discharge hole, and a sealing cover can be detachably installed in the discharge hole.

[0015] By adopting the above technical solution, it is easy to discharge the material in the fixed box through the discharge hole.

[0016] Preferably, the sealing cap is threadedly connected to the fixed box.

[0017] By adopting the above technical solution, it is easy to install the sealing cover onto the fixed box.

[0018] Preferably, a guide chute and a hydraulic slide valve are provided at the bottom outlet of the hopper.

[0019] By adopting the above technical solution, it is easier to guide the material feeding and control the material falling speed. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the material feeding anti-blocking device according to an embodiment of the present invention.

[0021] Figure 2 yes Figure 1 Cross-sectional view of the central hole switch mechanism.

[0022] Figure 3 yes Figure 2 A top-view sectional view of the central guide plate and the hopper after assembly.

[0023] Explanation of reference numerals in the attached drawings: 1. Hopper; 11. Guide chute; 12. Vent hole; 2. Hydraulic slide gate valve; 3. Conveyor belt; 4. Support frame; 5. Air cannon; 51. Air inlet pipe; 52. Air outlet pipe; 6. Solenoid valve; 7. PLC control box; 8. Hole switch mechanism; 81. Fixed box; 811. Sliding hole; 812. Discharge hole; 82. Partition plate; 83. Sealing ring; 84. Guide pressure plate; 85. Sealing cover; 86. Fixed plate; 87. Cylinder; 871. Connecting plate; 872. Bolt; 88. Connecting rod; 89. Baffle plate. Detailed Implementation

[0024] The following combination Figures 1-3 The present invention will be described in further detail below.

[0025] This utility model discloses a material discharge anti-blocking device. The device is installed on a hopper 1, which is used to collect materials and facilitate their flow to a designated location. A guide trough 11 is fixedly connected to the bottom outlet of the hopper 1 to control the material discharge direction and prevent spillage. A hydraulic slide valve 2 is installed at the outlet of the hopper 1 to control the discharge speed. A conveyor belt 3 is installed below the hopper 1 to transport materials to a designated location.

[0026] Four sets of material discharge anti-blocking devices are evenly arranged around the outer wall of the discharge hopper 1. Each set includes a bracket 4 fixed to the outer wall of the discharge hopper 1. An air cannon 5 is mounted on the bracket 4. The air cannon 5 is equipped with an air inlet pipe 51, an air outlet pipe 52, and a solenoid valve 6. The air inlet pipe 51 is connected to a compressed air source to provide the air cannon 5 with a rated pressure air source. The solenoid valve 6 is electrically connected to a PLC control box 7, which controls the opening and closing of the solenoid valve 6.

[0027] Below the air cannon 5 is a hole switch mechanism 8. The hole switch mechanism 8 includes a fixed box 81 fixed to the outer wall of the hopper 1. A partition 82 is vertically fixed in the center of the fixed box 81. The partition 82 divides the interior of the fixed box 81 into two independent cavities. The air outlet pipe 52 is connected to the two cavities respectively. A long strip-shaped sliding hole 811 is opened at the top of the fixed box 81 for each cavity. A circular discharge hole 812 is opened at the bottom of the fixed box 81 for each cavity.

[0028] A sealing ring 83 is embedded and fixed inside the periphery of the sliding hole 811. Two guide plates 84 are arranged vertically in each cavity of the fixed box 81. The cross-section of the guide plate 84 is L-shaped. One end of the guide plate 84 is vertically fixed to the outer wall of the hopper 1, and the other end is suspended and parallel to the outer wall of the hopper 1. A vent hole 12 is opened on the side wall of the hopper 1 corresponding to the center of each pair of guide plates 84. Compressed air enters the hopper 1 through the vent hole 12. A sealing cap 85 is installed in the internal thread of the discharge hole 812.

[0029] A fixing plate 86 is fixedly connected to the outer wall of the hopper 1. A cylinder 87 is fixedly installed on the fixing plate 86. The cylinder 87 is electrically connected to the PLC control box 7. The piston rod of the cylinder 87 is set downward and a U-shaped connecting plate 871 is fixedly connected to the end of the piston rod. A U-shaped connecting rod 88 is horizontally fixed inside the connecting plate 871 by bolts 872. A rectangular baffle plate 89 is fixedly connected to the bottom of each of the two arms of the connecting rod 88. The baffle plate 89 slides through the area between the sliding hole 811 and the two guide pressure plates 84 to temporarily close the vent hole 12. The fixed end of the guide pressure plate 84 limits the movement trajectory of the baffle plate 89, while the suspended end of the guide pressure plate 84 applies pressure to the baffle plate 89, so that the baffle plate 89 fits tightly against the outer wall of the hopper 1. The sealing ring 83 provides an airtight seal between the fixing box 81 and the baffle plate 89.

[0030] The material discharge anti-blocking device of this embodiment operates as follows: When material needs to be discharged, the hydraulic slide valve 2 is opened to allow the material to fall onto the conveyor belt 3. If material agglomeration occurs, the operator controls the piston rod of cylinder 87 via PLC control box 7 to retract, causing the baffle plate 89 to move upwards, exposing the vent hole 12. Simultaneously, the solenoid valve 6 and air cannon 5 are activated, and compressed air enters the discharge hopper 1 through the vent hole 12, forming an explosive airflow that instantly detaches the material adhering to the side wall of the hopper, preventing agglomeration and blockage of the discharge port due to prolonged material accumulation. If material enters the fixed box 81, the sealing cover 85 can be opened to discharge or clean it. In other embodiments, the PLC control box 7 can be set to periodically open and close the air cannon 5 and vent hole 12 as needed.

[0031] Compared with the prior art, the present invention, which adopts the above technical solution, sprays high-pressure airflow into the conical hopper 1 through the air cannon 5, so that the material adhering to the side wall of the hopper 1 is instantly detached. This solves the problem of material accumulating on the side wall of the hopper 1 to form clumps and block the outlet, reduces the cost of manual unblocking or cleaning, and ensures the normal operation of the equipment.

[0032] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A material feeding anti-blocking device, characterized in that: The device includes an air cannon (5) and a hole switch mechanism (8). A bracket (4) is fixedly connected to the outer wall of the hopper (1). The air cannon (5) is mounted on the bracket (4). An air inlet pipe (51), an air outlet pipe (52), and a solenoid valve (6) are installed on the air cannon (5). The hole switch mechanism (8) includes a fixed box (81) and a cylinder (87) fixed to the outer wall of the hopper (1). The air outlet pipe (52) is connected to the inside of the fixed box (81). A ventilation hole (12) is opened on the side wall of the hopper (1). The ventilation hole (12) is located inside the fixed box (81). A sliding hole (811) is opened on the side wall of the fixed box (81). The piston rod of the cylinder (87) is connected to a baffle plate (89) that slides through the sliding hole (811) and movably closes the ventilation hole (12). The cylinder (87) and the solenoid valve (6) are electrically connected to a PLC control box (7).

2. The material feeding anti-blocking device according to claim 1, characterized in that: A partition (82) is vertically fixed in the center of the fixed box (81). The partition (82) divides the internal area of ​​the fixed box (81) into two cavities. Each cavity corresponds to a vent hole (12). The piston rod of the cylinder (87) is connected to a U-shaped connecting rod (88). The two arms of the connecting rod (88) are respectively fixed with baffle plates (89).

3. The material feeding anti-blocking device according to claim 2, characterized in that: The piston rod end of the cylinder (87) is fixedly connected to an inverted U-shaped connecting plate (871), and the connecting rod (88) is fixedly installed in the connecting plate (871) by bolts (872).

4. The material feeding anti-blocking device according to claim 1 or 2, characterized in that: A sealing ring (83) is embedded in the inner wall of the sliding hole (811).

5. The material feeding anti-blocking device according to claim 1 or 2, characterized in that: The fixed box (81) is equipped with two guide plates (84) corresponding to each vent (12). The guide plates (84) have an L-shaped cross section, and one end is vertically fixed to the outer wall of the hopper (1), while the other end is suspended and parallel to the outer wall of the hopper (1). The vent (12) is located between the two guide plates (84), and the baffle plate (89) is slidably set between the two guide plates (84).

6. The material feeding anti-blocking device according to claim 1 or 2, characterized in that: The bottom of the fixed box (81) is provided with a discharge hole (812), and a sealing cover (85) can be detachably installed inside the discharge hole (812).

7. The material feeding anti-blocking device according to claim 6, characterized in that: The sealing cap (85) is threadedly connected to the fixed box (81).

8. The material feeding anti-blocking device according to claim 1, characterized in that: The bottom outlet of the hopper (1) is equipped with a guide chute (11) and a hydraulic slide valve (2).

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