A metal valve sealing mechanism

Abstract

The utility model discloses a metal valve sealing mechanism relates to valve technical field, including valve plate, and the valve plate adopts metal material. The present application provides a kind of metal valve sealing mechanism, and the metal valve plate is connected with left and right two clamps as a whole with the valve shaft can be opened / close movement, when valve plate runs to valve seat, valve shaft will continue to move a distance in the valve closing direction, at this moment, it can guarantee that valve plate is in bending deformation, and closely cooperate with valve seat, the sealing surface on valve seat, do special angle processing, can guarantee that valve plate bends, can guarantee large area contact with valve plate, to play the sealing effect, simultaneously due to the deformation of valve plate, simultaneously exert a pressure on the sealing surface of valve seat, further increase the sealing effect, the clamps on both sides, guarantee the prerequisite of overall structural strength, simultaneously make the deformation area of valve plate reduce, to guarantee that the pressure of sealing surface of valve seat is very big under the condition that the deformation of valve plate is smaller.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a metal valve sealing mechanism. Background Technology

[0002] Currently, most valves used in environmental protection equipment on the market have non-metallic sealing structures. Due to their wear resistance, temperature resistance, and corrosion resistance, non-metallic sealing mechanisms require regular repair and replacement of the sealing structure.

[0003] Existing valve metal sealing structures use a valve plate and base fitting structure. Due to the deformation and elasticity of the valve plate itself, it is difficult to ensure a close fit between the valve plate and the base, which can easily lead to leakage. The main reason is that the flatness of the valve plate itself may cause leakage gaps between the valve plate and the sealing base. The greater the pressure on the sealing surface, the better the sealing effect. Traditional technology cannot guarantee the sealing effect. Utility Model Content

[0004] The purpose of this invention is to provide a metal valve sealing mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a metal valve sealing mechanism, including a valve plate, the valve plate being made of metal, and clamping plates being fixed on both sides of the valve plate. The clamping plates on both sides increase the structural strength of the valve plate while reducing the deformation area. The valve plate is in contact with the valve seat for sealing, and the special angle of the valve seat sealing surface is calculated to match the curvature of the valve plate after bending.

[0006] Furthermore, the valve plate is coaxially fixed to the bottom side of the valve shaft via a bushing, and a limit pin is fixed to the top side of the valve shaft.

[0007] Furthermore, the valve plate is connected to the left and right clamps as a whole and operates in a switching motion along with the valve shaft.

[0008] Furthermore, when the valve plate moves to the valve seat position, the valve shaft continues to move a certain distance in the valve closing direction to ensure that the valve plate is in a bent deformation and tightly fits with the valve seat.

[0009] Furthermore, the valve shaft is located inside the valve body, and a valve cavity for the valve plate to rotate is provided in the middle of the valve body.

[0010] Furthermore, a valve cover is integrally fixed on the valve body, and the upper surface of the valve cover is provided with a limiting groove that cooperates with the limiting pin.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This technology connects the metal valve plate with the two clamping plates on the left and right as a whole. As the valve shaft can move open and close, when the valve plate moves to the valve seat, the valve shaft will continue to move a distance in the valve closing direction. At this time, it can ensure that the valve plate is bent and deformed, and fits tightly with the valve seat. The sealing surface on the valve seat is specially angled to ensure that it can have a large contact area with the valve plate when it is bent, thereby achieving a sealing effect. At the same time, due to the deformation of the valve plate, pressure is applied to the sealing surface of the valve seat, further increasing the sealing effect. The clamping plates on both sides ensure the overall structural strength while reducing the deformation area of ​​the valve plate. This ensures that the pressure on the sealing surface of the valve seat is high even when the deformation of the valve plate is small. When the valve is opened, the deformation of the valve plate disappears and returns to its original state.

[0012] 2. This technology fixes a limit pin on the top side of the valve shaft and provides a limit groove on the upper surface of the valve cover that cooperates with the limit pin. This design ensures that the extra stroke of the valve shaft is consistent each time it is closed, avoiding excessive deformation of the valve plate due to excessive stroke or insufficient sealing pressure due to insufficient stroke, and further improving sealing stability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model; Figure 2 This is a schematic diagram of the split structure of the device of this utility model; Figure 3 This is a front view structural diagram of the device of this utility model.

[0014] In the diagram: 1. Valve plate; 2. Clamping plate; 3. Valve shaft; 4. Limit pin; 5. Valve body; 6. Valve cavity; 7. Valve seat; 8. Valve cover; 9. Limit groove. Detailed Implementation

[0015] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0016] like Figures 1 to 3 As shown, a metal valve sealing mechanism includes a valve plate 1 made of metal, with clamping plates 2 fixed on both sides of the valve plate 1. The clamping plates 2 increase the structural strength of the valve plate 1 while reducing the deformation area. The valve plate 1 contacts and seals with the valve seat 7, and the special angle of the sealing surface of the valve seat 7 is calculated to match the curvature of the valve plate 1 after bending. The valve plate 1 and the two clamping plates 2 are connected as a whole and move with the valve shaft 3. When the valve plate 1 moves to the position of the valve seat 7, the valve shaft 3 continues to move a distance in the valve closing direction to ensure that the valve plate 1 is in bending deformation and tightly cooperates with the valve seat 7. The specific operation is as follows: This technology connects the metal valve plate 1 with the two left and right clamping plates 2 into a whole. As the valve shaft 3 can move open and close, when the valve plate 1 moves to the valve seat 7, the valve shaft 3 will continue to move a distance in the valve closing direction. At this time, it can ensure that the valve plate 1 is in a bent deformation and is in close contact with the valve seat 7. The sealing surface on the valve seat 7 is specially angled to ensure that when the valve plate 1 is bent, it can maintain a large area of ​​contact with the valve plate 1, thereby playing a sealing role. At the same time, due to the deformation of the valve plate 1, a pressure is applied to the sealing surface of the valve seat 7, which further increases the sealing effect. The clamping plates 2 on both sides ensure the overall structural strength while reducing the deformation area of ​​the valve plate 1. This ensures that the pressure on the sealing surface of the valve seat 7 is large when the deformation of the valve plate 1 is small. When the valve is opened, the deformation of the valve plate 1 disappears and returns to its original state. like Figures 1 to 3 As shown, the valve plate 1 is coaxially fixed to the bottom side of the valve shaft 3 by a bushing, and the top side of the valve shaft 3 is fixed with a limit pin 4. The valve shaft 3 is located inside the valve body 5, and the valve body 5 has a valve cavity 6 in the middle for the valve plate 1 to rotate. The valve cover 8 is integrally fixed on the valve body 5, and the upper surface of the valve cover 8 is provided with a limit groove 9 that cooperates with the limit pin 4. The specific operation is as follows: This technology fixes a limiting pin 4 at the top side of the valve shaft 3, and provides a limiting groove 9 on the upper surface of the valve cover 8 that cooperates with the limiting pin 4. This design ensures that the extra stroke of the valve shaft 3 is consistent each time it is closed, avoiding excessive deformation of the valve plate 1 due to excessive stroke, or insufficient sealing pressure due to insufficient stroke, and further improving sealing stability.

[0017] Working Principle: This technology connects the metal valve plate 1 with the two left and right clamping plates 2 as a whole. As the valve shaft 3 moves open and closes, when the valve plate 1 reaches the valve seat 7, the valve shaft 3 continues to move a certain distance in the valve-closing direction. This ensures that the valve plate 1 is bent and deformed, and tightly fits with the valve seat 7. The sealing surface on the valve seat 7 is specially angled to ensure a large contact area with the valve plate 1 when bent, thus achieving a sealing effect. Simultaneously, the deformation of the valve plate 1 applies pressure to the sealing surface of the valve seat 7, further enhancing the sealing effect. The side clamp 2 ensures the overall structural strength while reducing the deformation area of ​​the valve plate 1. This ensures that the pressure on the sealing surface of the valve seat 7 is high even when the deformation of the valve plate 1 is small. When the valve is opened, the deformation of the valve plate 1 disappears and it returns to its original state. This technology fixes a limit pin 4 at the top side of the valve shaft 3 and provides a limit groove 9 on the upper surface of the valve cover 8 that cooperates with the limit pin 4. This design ensures that the extra stroke of the valve shaft 3 is consistent each time it is closed, avoiding excessive deformation of the valve plate 1 due to excessive stroke or insufficient sealing pressure due to insufficient stroke, and further improving sealing stability.

[0018] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A metal valve sealing mechanism, comprising a valve plate (1), characterized in that, The valve plate (1) is made of metal, and the valve plate (1) is fixed with clamps (2) on the left and right sides. The clamps (2) on both sides increase the structural strength of the valve plate (1) while reducing the deformation area. The valve plate (1) is in contact with the valve seat (7) and sealed. The special angle of the sealing surface of the valve seat (7) is calculated to match the arc of the valve plate (1) after bending.

2. The metal valve sealing mechanism according to claim 1, characterized in that, The valve plate (1) is coaxially fixed to the bottom side of the valve shaft (3) by a bushing, and a limit pin (4) is fixed to the top side of the valve shaft (3).

3. A metal valve sealing mechanism according to claim 2, characterized in that, The valve plate (1) is connected to the two left and right clamps (2) as a whole and opens and closes with the valve shaft (3).

4. A metal valve sealing mechanism according to claim 3, characterized in that, When the valve plate (1) moves to the position of the valve seat (7), the valve shaft (3) continues to move a distance in the direction of valve closing to ensure that the valve plate (1) is in a bent deformation and fits tightly with the valve seat (7).

5. A metal valve sealing mechanism according to claim 4, characterized in that, The valve shaft (3) is located inside the valve body (5), and the valve body (5) has a valve cavity (6) in the middle for the valve plate (1) to rotate.

6. A metal valve sealing mechanism according to claim 5, characterized in that, A valve cover (8) is integrally fixed on the valve body (5), and a limiting groove (9) is provided on the upper surface of the valve cover (8) to cooperate with the limiting pin (4).

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