Torque sealing type flap valve

Abstract

The utility model relates to a torque sealing type flap valve, which belongs to the technical field of flap valves and comprises a valve body and a valve plate, sealing grooves are arranged on the upper side and the lower side of the valve body, the two sealing grooves on the upper side and the lower side are in central symmetry about the center of the valve body, and asbestos cord fillers for sealing are mounted in the sealing grooves. A rotating shaft penetrates through the valve plate, a balance weight is arranged at one end of the rotating shaft, and when the valve is closed, under the action of the balance weight, the valve plate compresses the asbestos cord filler, and good sealing is achieved. According to the torque sealing type flap valve, due to the fact that the asbestos cord padding is installed on the upper side and the lower side of the valve body, when the valve is closed, the valve plate presses the asbestos cord padding tightly under the action of the balance weight, and sealing is achieved; according to the utility model, the sealing effect is good, the air volume and the air pressure loss can be greatly reduced, and the smoke dust collection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a torque-sealed flap valve, belonging to the technical field of flap valves. Background Technique

[0002] A flap valve, also called a butterfly valve, is a simple-structured regulating valve. The flap valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metals, and radioactive media, and mainly functions as a cut-off and throttling on pipelines.

[0003] In dust removal and environmental protection projects, flap valves are often installed at each dust removal port of the pipeline system to control the on-off of each dust removal port. However, the existing flap valves have no sealing surface, and the valve leakage is serious, resulting in the loss of dust removal air volume and air pressure, so that the generated dust cannot be effectively collected. Content of the Utility Model

[0004] According to the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide a torque-sealed flap valve with good sealing effect, which can reduce the loss of air volume and air pressure and ensure the effective collection of dust.

[0005] The torque-sealed flap valve described in the utility model includes a valve body and a valve plate. Sealing grooves are provided on both the upper and lower sides of the valve body. The two sealing grooves on the upper and lower sides are centrosymmetric about the center of the valve body. Asbestos rope packing for sealing is installed in the sealing grooves; a rotating shaft is penetrated through the valve plate, and a counterweight is provided at one end of the rotating shaft. When the valve is closed, under the action of the counterweight, the valve plate presses the asbestos rope packing to achieve good sealing.

[0006] The technical solution of the utility model is to provide a torque-sealed flap valve. By installing asbestos rope packing on both the upper and lower sides of the valve body and cooperating with the action of the counterweight, the valve plate presses the asbestos rope packing to achieve sealing.

[0007] Preferably, threaded holes are provided on the sealing grooves, counterbores are provided on the asbestos rope packing, and the asbestos rope packing is connected to the sealing grooves by bolts.

[0008] Preferably, a convex platform is provided at the contact position between the valve plate and the asbestos rope packing. The convex platform is in the shape of a triangular prism, and a line seal can be formed after one edge of the convex platform contacts the asbestos rope packing.

[0009] Preferably, a handle for controlling the angle of the valve plate is provided at the other end of the rotating shaft.

[0010] Preferably, an adjusting plate is provided on one side of the valve body close to the handle. The adjusting plate is arc-shaped and is provided with a plurality of round holes. A positioning rod is installed on the handle. The positioning rod is connected to the handle through a tension spring, and the positioning rod is adapted to the round holes on the adjusting plate. Inserting the positioning rod into the round holes of the adjusting plate can lock the valve plate. Lifting the positioning rod can adjust the angle of the valve plate, thereby adjusting the valve opening degree.

[0011] The beneficial effects of the present utility model compared with the prior art are as follows:

[0012] For the torque-sealing flap valve of the present utility model, asbestos rope packings are installed on both the upper and lower sides of the valve body. When the valve is closed, under the action of the counterweight, the valve plate presses the asbestos rope packing to achieve sealing. A boss is provided on the valve plate, which can form a line seal after contacting the asbestos rope packing. The present utility model has a good sealing effect, can greatly reduce the air volume and wind pressure loss, and improve the dust collection efficiency. Description of the Drawings

[0013] Figure 1 is one of the structural schematic diagrams of the present utility model;

[0014] Figure 2 is the second structural schematic diagram of the present utility model;

[0015] Figure 3 is the cross-sectional view of the present utility model.

[0016] In the figure: 1, valve body; 2, valve plate; 3, adjusting plate; 4, tension spring; 5, positioning rod; 6, handle; 7, sealing groove; 8, counterweight; 9, rotating shaft; 10, asbestos rope packing; 11, boss. Specific Embodiments

[0017] The present utility model will be further described below in conjunction with specific embodiments.

[0018] However, the description of the present utility model is only an embodiment of structural and functional descriptions. The scope of rights of the present utility model is not limited by the embodiments described in the text.

[0019] For example, multiple embodiments can have various changes and various forms. It should be understood that the scope of rights of the present utility model includes equivalents that can implement the technical idea.

[0020] Such as Figures 1 to 3As shown in the figure, this embodiment is realized through the following technical solutions: It includes a valve body 1 and a valve plate 2. Sealing grooves 7 are provided on both the upper and lower sides of the valve body 1. The two sealing grooves on the upper and lower sides are centrosymmetric about the center of the valve body 1. An asbestos rope packing 10 for sealing is installed in the sealing groove 7. A rotating shaft 9 is penetrated through the valve plate 2. A counterweight 8 is provided at one end of the rotating shaft 9. When the valve is closed, under the action of the counterweight 8, the valve plate 2 presses the asbestos rope packing 10 to achieve good sealing.

[0021] In this embodiment, threaded holes are provided on the sealing groove 7, and counterbores are provided on the asbestos rope packing 10. The asbestos rope packing 10 is connected to the sealing groove 7 through bolts. A boss 11 is provided at the contact position between the valve plate 2 and the asbestos rope packing 10. The boss 11 is in the shape of a triangular prism. A linear seal can be formed after one edge of the boss 11 contacts the asbestos rope packing 10. A handle 6 for controlling the angle of the valve plate 2 is provided at the other end of the rotating shaft 9.

[0022] An adjusting plate 3 is provided on one side of the valve body 1 close to the handle 6. The adjusting plate 3 is arc-shaped, and a number of round holes are provided on the adjusting plate 3. A positioning rod 5 is installed on the handle 6. The positioning rod 5 is connected to the handle 6 through a tension spring 4. The positioning rod 5 is adapted to the round holes on the adjusting plate 3. By inserting the positioning rod 5 into the round holes on the adjusting plate 3, the valve plate 2 can be locked. By lifting the positioning rod 5, the angle of the valve plate 2 can be adjusted, and thus the valve opening can be adjusted.

[0023] The usage method of this utility model is as follows:

[0024] When it is necessary to close the valve, lift the positioning rod 5 to disengage it from the round holes on the adjusting plate 3, and rotate the handle 6. Under the action of the counterweight 8, the valve plate 2 presses the asbestos rope packing 10 to achieve sealing. When it is necessary to adjust the valve opening, lift the positioning rod 5, rotate the handle 6, rotate the valve plate to a suitable angle, and release the positioning rod 5. Under the action of the tension spring 4, the positioning rod 5 penetrates into the round holes on the adjusting plate 3 to achieve the positioning of the valve plate 2.

[0025] Of course, the above content is only the preferred embodiment of this utility model and cannot be considered as limiting the scope of the embodiments of this utility model. This utility model is not limited to the above examples either. Equal changes and improvements made by those of ordinary skill in the art within the essence of this utility model shall fall within the scope covered by the patent of this utility model.

Claims

1. A torque-sealed flap valve, characterized in that, It includes a valve body (1) and a valve plate (2). Sealing grooves (7) are provided on both the upper and lower sides of the valve body (1). The two sealing grooves on the upper and lower sides are centrosymmetric about the center of the valve body (1). An asbestos rope packing (10) for sealing is installed in the sealing groove (7); a rotating shaft (9) is penetrated through the valve plate (2), and a counterweight (8) is provided at one end of the rotating shaft (9).

2. The torque-sealed flap valve according to claim 1, characterized in that, Threaded holes are provided in the sealing groove (7), and counterbores are provided in the asbestos rope packing (10). The asbestos rope packing (10) is connected to the sealing groove (7) by bolts.

3. The torque-sealed flap valve according to claim 2, characterized in that, A boss (11) is provided at the contact position between the valve plate (2) and the asbestos rope packing (10). The boss (11) is in the shape of a triangular prism, and a linear seal can be formed after one edge of the boss (11) contacts the asbestos rope packing (10).

4. The torque-sealed flap valve according to claim 1, wherein, A handle (6) for controlling the angle of the valve plate (2) is provided at the other end of the rotating shaft (9).

5. The torque-sealed flap valve according to claim 4, wherein An adjusting plate (3) is provided on one side of the valve body (1) close to the handle (6). The adjusting plate (3) is arc-shaped, and a plurality of round holes are provided in the adjusting plate (3); a positioning rod (5) is installed on the handle (6), the positioning rod (5) is connected to the handle (6) by a tension spring (4), and the positioning rod (5) is adapted to the round holes in the adjusting plate (3).

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