A chute flap device

Abstract

This utility model relates to a chute flap device, particularly suitable for flap devices in raw material yard transfer stations, belonging to the technical field of material handling equipment parts. The technical solution is as follows: the flap is rotatably installed inside the housing at the inlet via a flap shaft. One end of the flap shaft is housed in a bearing on one side of the housing wall, and the other end passes through a bearing on the other side of the housing wall and connects to one end of a connecting rod. The other end of the connecting rod is hinged to a lever of an electro-hydraulic actuator. The cylinder of the electro-hydraulic actuator is fixed to the bottom outer wall of the housing via a actuator support. The electro-hydraulic actuator drives the connecting rod to rotate the flap, thus achieving the opening and closing action. The positive effects of this utility model are: the flap opens in the direction of material flow, reducing resistance; when the flap closes, the material slides down naturally without jamming; when the flap is closed, it can store a certain amount of material to form a material layer, which effectively buffers the impact force brought by the material during feeding, extending the flap's lifespan to more than 2 years.

Description

Technical Field

[0001] This utility model relates to a chute tipping device, which is particularly suitable for tipping devices of chutes in raw material yard transfer stations, and belongs to the technical field of material handling equipment parts. Background Technology

[0002] Traditional steel plant raw material transfer station chutes mostly use slide gate valves, which suffer from high opening and closing resistance, direct friction between the slide gate and the material requiring manual or high-power actuation, making operation difficult; frequent blockages occur, with material getting stuck in the narrow gap when the slide gate is closed, resulting in high cleaning and maintenance costs; severe wear occurs, with material directly scouring the slide gate surface, causing rapid wear of the steel plate and a lifespan of less than 6 months; and poor sealing performance allows for material leakage between the slide gate and the chute body, polluting the environment. To solve the problems of slide gate valves in raw material transfer station chutes, reduce high opening and closing resistance, eliminate blockages, extend spare parts lifespan, improve the work environment, and reduce employee workload, a chute flapper device needs to be manufactured to solve the problems of the original slide gate valve. Utility Model Content

[0003] The purpose of this invention is to provide a chute flap device to solve the problems of blockage and severe wear in the prior art of slide gate valves.

[0004] The technical solution of this utility model is: A chute flap device includes a housing, a connecting rod, a flap, an electro-hydraulic actuator, and an actuator support. The flap is rotatably mounted inside the housing at the inlet via a flap shaft. One end of the flap shaft is housed in a bearing on one side of the housing wall, and a bearing end cap is fixed to the bearing by an end cap bolt. The other end of the flap shaft passes through a bearing on the other side of the housing wall and connects to one end of the connecting rod, which is fixed to the bearing end cap by an end cap bolt. The other end of the connecting rod is hinged to a lever of the electro-hydraulic actuator. The cylinder of the electro-hydraulic actuator is fixed to the bottom outer wall of the housing via an actuator support. The electro-hydraulic actuator drives the connecting rod to rotate the flap, thus achieving the opening and closing action. The opening direction of the flap is consistent with the material flow direction. When the flap is closed, its angle with the horizontal plane is 30°-60°, allowing it to store a certain amount of material and form a material layer on the flap. When material is discharged, the falling material lands on the material layer on the flap, reducing the impact force on the flap.

[0005] Furthermore, the surface of the chute template is provided with a rotary ceramic liner.

[0006] Furthermore, the connection between the connecting rod and the other end of the flap shaft is secured by a bolt assembly to install an end cap.

[0007] Furthermore, the maximum rotation angle R of the end of the connecting rod that is hinged to the electro-hydraulic actuator is 135°.

[0008] Furthermore, the connecting rod is bent, with a small round hole at one end that is hinged to the lever of the electro-hydraulic actuator by a pin, and a large round hole at the other end. A bushing is installed in the large round hole, and the other end of the flap shaft is inserted into the bushing and connected by a flat key. An end cap is installed on the outside of the bushing by a bolt assembly.

[0009] The positive effects of this utility model are: the flap opens in the direction of material flow, reducing resistance; when the flap closes, the material slides down naturally without jamming; the flap is equipped with a ceramic liner to increase wear resistance; at the same time, when the flap is closed, the angle between it and the horizontal plane is 30°-60°, which can store a certain amount of material to form a material layer. When the material is fed, the material layer can effectively buffer the impact force brought by the material, and the life of the flap is extended to more than 2 years. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Side view; Figure 3 for Figure 1 Top view; Figure 4 This is a schematic diagram of the structure of the connecting rod and bushing after assembly. Figure 5 This is a top sectional view of the connecting rod and bushing of this utility model after assembly; Figure 6 This is a schematic diagram of the connecting rod structure of this utility model; Figure 7 This is a sectional view of the bushing of this utility model; Figure 8 This is a schematic diagram of the bushing structure of this utility model; In the diagram: 1. Housing; 2. Connecting rod; 3. Flip plate; 4. Electro-hydraulic actuator; 5. Actuator support; 61. Bearing end cover 1; 62. Bearing end cover 2; 71. End cover bolt 1; 72. End cover bolt 2; 8. Bolt assembly 1; 9. Bolt assembly 2; 10. Bushing 11. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments: See attached document Figure 1-8A chute flap device is installed in a raw material transfer station, comprising a housing 1, a connecting rod 2, a flap 3, an electro-hydraulic actuator 4, and an actuator support 5. The flap 3 is rotatably mounted at the inlet of the housing 1 via a flap shaft. One end of the flap shaft is located in a bearing on one side wall of the housing 1, and a bearing end cap 61 is fixed to the bearing by an end cap bolt 71. The other end of the flap shaft passes through a bearing on the other side wall of the housing 1 and connects to one end of the connecting rod 2, which is fixed to the bearing end cap 62 by an end cap bolt 72. The other end of the connecting rod 2 is hinged to the lever of the electro-hydraulic actuator 4. The cylinder of the electro-hydraulic actuator 4 is fixed to the bottom outer wall of the housing 1 via the actuator support 5. The electro-hydraulic actuator 4 drives the connecting rod 2 to rotate the flap 3 to achieve the opening and closing action. The opening direction of the flap 3 is consistent with the material flow direction. When the flap 3 is closed, the angle between it and the horizontal plane is 30°-60°, preferably 45°.

[0012] Preferably, a ceramic liner is installed on the surface of the chute template to increase wear resistance.

[0013] See attached document Figure 2 An end cap 8 is provided at the connection between the connecting rod 2 and the other end of the flap shaft.

[0014] See attached document Figure 4 The maximum rotation angle R of the lever hinged end of the connecting rod 2 and the electro-hydraulic actuator 4 is 135°. See attached document Figure 4-8 The connecting rod 2 is bent, with a small round hole at one end that is hinged to the lever of the electro-hydraulic push rod 4 by a pin, and a large round hole at the other end. A bushing 11 is provided in the large round hole, and the other end of the flap shaft is inserted into the bushing 11 and connected by a flat key.

[0015] In this embodiment: the surface roughness of the material feeding perimeter of the shell 1 is Ra50, and a 10mm thick chute template is welded to the inner wall of the shell. A ceramic liner is installed on the surface of the chute template.

[0016] The flap 3 is made of 20mm thick Q235B steel plate and is rotatably installed inside the housing 1 via a flap shaft. When closed, it forms a 45° angle with the horizontal plane, causing material to accumulate and form a "material-on-material" buffer layer. The flap shaft of the flap 3 is provided with bearing end cap 1 61 and bearing end cap 2 62 at both ends, and is fixed by end cap bolt 1 71 and end cap bolt 2 72 to increase the sealing performance.

[0017] The number of end cap bolts 71 and 72 is 12 in total, and they are all M10×30 bolts.

[0018] The electro-hydraulic actuator 4 has a pushing and pulling force of 5-10 tons and a stroke of 300-500 mm, and is fixed to the housing 1 by the actuator support 5. The drive of the electro-hydraulic actuator 4 supports remote control, which is a well-known and commonly used technical means in this field.

[0019] The cylinder body of the electro-hydraulic actuator 4 is connected and fixed by bolt assembly 210 and actuator support 5.

[0020] In this invention, when materials flow through, the flap 3 opens in the forward direction. After closing, iron ore powder accumulates on the surface of the flap 3 to a thickness of 5-10cm, effectively preventing subsequent materials from directly impacting the ceramic liner. This extends the flap replacement cycle, reduces the high resistance of the switch, eliminates the problem of material blockage, and improves the service life of spare parts. The use of the bearing end cover improves the sealing performance of the housing, indirectly improving the on-site environment and reducing the labor intensity of employees.

Claims

1. A chute flap device, characterized by: The assembly includes a housing (1), a connecting rod (2), a flap (3), an electro-hydraulic actuator (4), and an actuator support (5). The flap (3) is rotatably mounted at the inlet of the housing (1) via a flap shaft. One end of the flap shaft is located in a bearing on one side wall of the housing (1), and a bearing end cap (61) is fixed thereto by an end cap bolt (71). The other end of the flap shaft passes through a bearing on the other side wall of the housing (1) and connects to one end of the connecting rod (2). The bearing end cap 2 (62) is fixed by the end cap bolt 2 (72). The other end of the connecting rod (2) is hinged to the lever of the electro-hydraulic push rod (4). The cylinder of the electro-hydraulic push rod (4) is fixed to the bottom outer wall of the housing (1) by the push rod support (5). The electro-hydraulic push rod (4) drives the connecting rod (2) to rotate the flap (3) to realize the opening and closing action. The opening direction of the flap (3) is consistent with the material flow direction. When the flap (3) is closed, the angle between it and the horizontal plane is 30°-60°.

2. A chute flap device according to claim 1, wherein: The surface of the chute template is provided with a ceramic lining plate.

3. A chute flap device according to claim 1 or 2, characterised in that: The connection between the connecting rod (2) and the other end of the flap shaft is fitted with an end cap (8) via a bolt assembly (9).

4. A chute flap device according to claim 1 or 2, characterised in that: The maximum rotation angle R of the lever hinged end of the connecting rod (2) and the electro-hydraulic push rod (4) is 135°.

5. A chute flap device according to claim 1 or 2, characterised in that: The connecting rod (2) is bent, with a small round hole at one end that is hinged to the lever of the electro-hydraulic push rod (4) by a pin, and a large round hole at the other end. A bushing (11) is provided in the large round hole, and the other end of the flap shaft is inserted into the bushing (11) and connected by a flat key.

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