Plate-type gate valve sealing device

Abstract

The utility model provides a plate type gate valve sealing device which comprises a box body, a valve plate is arranged on the side portion of the box body in an inserted mode, a sealing device body is arranged on the peripheral side of the valve plate, the sealing device body comprises shells symmetrically arranged on the upper side and the lower side of the valve plate, a packing sealing strip is arranged between the shells, a pressing plate is arranged on the side portion of each shell, and a sealing strip is arranged on the sealing strip. And the pressing plates are connected through pressing plate bolts. The box body can be sealed at the position of the flat plate type gate valve, leakage of materials in the box body is avoided, meanwhile, dissipation of smoke below the flat plate type gate valve is completely blocked, and practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical furnace charging and relates to a sealing device for a plate-type plug-in valve. Background Art

[0002] In the production of metallurgical furnaces, flat plate gate valve is a widely used equipment, which has the advantages of simple structure, low failure rate and convenient control. Flat plate gate valve is generally installed at each feeding port to realize the start and stop of material transportation or the control of flow rate.

[0003] Take industrial metallurgical furnaces as an example. During the production process, materials must be added in proportion, and flat-type gate valves are widely used here. Material transportation equipment transports various materials to the discharge port above or on the side of the furnace, and the flat-type gate valve will play the role of material loading and unloading. However, it is difficult to completely seal the gap between the box and the valve plate. When the flat-type gate valve is opened, the material enters the metallurgical furnace, and the gas inside the furnace escapes through the discharge port, causing environmental pollution and deteriorating the working environment at the work site; when the flat-type gate valve is closed, the material above will overflow through the gap between the box and the flat-type gate valve. Therefore, the sealing problem of the flat-type gate valve is particularly important. Solving this problem will effectively improve the on-site working environment and reduce the intensity of work. Utility Model Content

[0004] The utility model aims to provide a plate-type plug-in valve sealing device to solve the problem of low sealing performance of the flat-plate plug-in valve in the operation of the existing industrial metallurgical furnace.

[0005] To this end, the utility model adopts the following technical solutions:

[0006] A plate-type plug-in valve sealing device comprises a box body, a valve plate is inserted into the side of the box body, a sealing device is provided on the peripheral side of the valve plate, the sealing device comprises a shell body symmetrically arranged on the upper and lower sides of the valve plate, a packing sealing strip is provided between the two, a pressure plate is provided on the side of the shell body, and the two are connected by pressure plate bolts.

[0007] Furthermore, the pressure plate is L-shaped, one end of which is connected to the shell, and the other end is located at the same horizontal position as the packing sealing strip and is in contact with the valve plate.

[0008] Furthermore, the pressing plate is made of a steel plate with a thickness of 5 mm.

[0009] Furthermore, the packing sealing strip has a size of 4*4*500mm.

[0010] The beneficial effects of the utility model are:

[0011] The utility model can realize the sealing of the box body at the position of the flat plate plug valve, avoids the leakage of materials inside the box body, and also completely blocks the escape of smoke below the flat plate plug valve. It is highly practical, has a simple structure, and is easy and quick to process and install. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of the assembly of the utility model;

[0013] Figure 2 It is a schematic side view of the assembly of the utility model;

[0014] Figure 3 for Figure 2 A partial enlarged schematic diagram of part A in the middle.

[0015] In the figure, 1-box, 2-valve plate, 3-sealing device, 31-shell, 32-pressure plate, 33-pressure plate bolt, 34-packing sealing strip. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is described below in conjunction with the accompanying drawings and implementation methods.

[0017] like Figure 1 and 2 As shown, a plate-type plug-in valve sealing device comprises a box body 1 , a valve plate 2 is inserted into the side of the box body 1 , and a sealing device 3 is provided on the peripheral side of the valve plate 2 .

[0018] like Figure 3 As shown, the sealing device 3 includes a shell 31 symmetrically arranged on the upper and lower sides of the valve plate 2, and a packing sealing strip 34 is arranged between the two. A pressure plate 32 is arranged on the side of the shell 31, and the two are connected by a pressure plate bolt 33.

[0019] The pressure plate 32 is L-shaped, one end of which is connected to the shell 31, and the other end is located at the same horizontal position as the packing sealing strip 34 and contacts the valve plate 2; specifically, the pressure plate 32 adopts a steel plate with a thickness of 5mm; the size of the packing sealing strip 34 is 4*4*500mm.

[0020] During use of the utility model, the pressure plate bolt 33 pre-tightens the pressure plate 32. During the pre-tightening process, the internal space of the sealing device becomes smaller, forcing the packing sealing strip 34 to deform. The upper and lower packing sealing strips 34 are squeezed toward the valve plate 2, and the elasticity of the packing sealing strip 34 itself seals the opening of the plug valve.

[0021] In addition, the packing seal strip 34 still retains its original shape and elasticity after multiple contacts with the valve plate 2, so that the utility model still has a relatively stable sealing performance. When the sealing effect is not obvious, the pressure plate bolts 33 can be continuously pre-tightened, or the packing seal strip 34 can be replaced to extend the service life of the utility model.

Claims

1. A plate-type plug-in valve sealing device, comprising a box body (1), a valve plate (2) inserted into the side of the box body (1), and a sealing device (3) provided around the valve plate (2), characterized in that: The sealing device (3) comprises a housing (31) symmetrically arranged on the upper and lower sides of the valve plate (2), with a packing sealing strip (34) arranged between the two, a pressure plate (32) being arranged on the side of the housing (31), and the two being connected via a pressure plate bolt (33); The pressure plate (32) is L-shaped, one end of which is connected to the housing (31), and the other end of which is located at the same horizontal position as the packing sealing strip (34) and in contact with the valve plate (2).

2. A plate-type plug-in valve sealing device according to claim 1, characterized in that: The pressing plate (32) is made of a steel plate with a thickness of 5 mm.

3. A plate-type plug-in valve sealing device according to claim 1, characterized in that: The packing sealing strip (34) has a size of 4*4*500 mm.

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