Pneumatic inclined lever type emptying ball valve

Abstract

The utility model discloses a kind of pneumatic inclined rod type discharge ball valve, including valve body, the valve cover being installed on valve body, the pneumatic actuator being installed on valve cover, the valve stem being connected with pneumatic actuator and the valve ball being installed on valve stem;Valve seat is also installed in the valve body;Its characterized in that the valve seat is movably installed in valve body and is installed between valve seat and valve body elastic member for promoting the sealing between valve ball and valve seat and is adjusted;Small through-hole is also provided on the valve seat to realize self-sealing between valve ball and valve seat.The utility model promotes the sealing between valve seat and valve ball by using elastic member to promote valve seat movement to self-regulate the sealing between valve seat and valve ball, to prevent leakage;By medium through small through-hole on valve seat into adjusting groove, utilize the pressure of medium to promote valve seat to move towards valve ball direction, make valve seat close to valve ball, to realize self-tight type sealing between valve seat and valve ball.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically to a pneumatic inclined rod type discharge ball valve. Background Technology

[0002] Ball valves are commonly used fluid shut-off devices, which use a rotating ball to open or close the flow path. They are widely used in the bottom discharge processes of reaction vessels and storage tanks in industries such as petroleum, chemical, pharmaceutical, and food processing. However, in existing ball valve technology, during operation, the pneumatic actuator drives the valve stem and ball to rotate. Prolonged friction between the valve ball and seat can easily cause wear, leading to valve leakage and reducing the valve's service life. Therefore, a self-regulating, sealing pneumatic slant-stem discharge ball valve is proposed. Summary of the Invention

[0003] The purpose of this invention is to solve the above problems by proposing a pneumatic inclined rod type discharge ball valve.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pneumatic inclined rod type discharge ball valve, comprising a valve body, a valve cover mounted on the valve body, a pneumatic actuator mounted on the valve cover, a valve stem connected to the pneumatic actuator, and a valve ball mounted on the valve stem; a valve seat is also installed in the valve body; characterized in that the valve seat is movably installed in the valve body and an elastic element installed between the valve seat and the valve body to push the valve seat and adjust the sealing between the valve ball and the valve seat; the valve seat is also provided with a small through hole to achieve self-sealing between the valve ball and the valve seat.

[0005] Preferably, the valve body is provided with an adjustment groove for easy adjustment of the valve seat; the elastic element is located in the adjustment groove.

[0006] Preferably, the micro-through hole on the valve seat communicates with the regulating groove, allowing the medium to enter the regulating groove through the micro-through hole and using the pressure of the medium to push the valve seat and valve ball to achieve a self-tightening seal.

[0007] Preferably, the valve seat includes a base, a hard alloy layer embedded in the center of the base to achieve a hard seal with the valve ball, and a flexible graphite layer to achieve a soft seal with the valve ball.

[0008] Preferably, the flexible graphite layer is located on the outer ring of the hard alloy layer, achieving a multi-layer seal with the valve ball.

[0009] The beneficial effects of this utility model are: by using an elastic element to drive the valve seat to move, the sealing between the valve seat and the valve ball is self-adjusted, thereby improving the sealing between the valve seat and the valve ball and preventing leakage; The medium enters the regulating groove through the tiny through-hole on the valve seat. The pressure of the medium pushes the valve seat towards the valve ball, so that the valve seat is tightly pressed against the valve ball, thereby achieving a self-tightening seal between the valve seat and the valve ball. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a utility model Figure 1 A magnified view of a portion of point A in the middle.

[0012] Legend: 1. Valve body; 101. Adjustment groove; 2. Valve cover; 3. Pneumatic actuator; 4. Valve stem; 5. Valve ball; 6. Valve seat; 601. Elastic element; 602. Micro-through hole; 603. Base; 604. Hard alloy layer; 605. Flexible graphite layer. Detailed Implementation

[0013] The pneumatic slant rod type discharge ball valve of this utility model will be further described below with reference to the accompanying drawings.

[0014] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0015] See appendix Figure 1-2 As shown, this embodiment of a pneumatic inclined rod type discharge ball valve includes a valve body 1, a valve cover 2 mounted on the valve body 1, a pneumatic actuator 3 mounted on the valve cover 2, a valve stem 4 connected to the pneumatic actuator 3, and a valve ball 5 mounted on the valve stem 4; a valve seat 6 is also installed inside the valve body 1; characterized in that the valve seat 6 is movably installed inside the valve body 1 and an elastic element 601 installed between the valve seat 6 and the valve body 1 to push the valve seat 6 to adjust the sealing between the valve ball 5 and the valve seat 6; the valve seat 6 is also provided with a small through hole 602 to achieve self-sealing between the valve ball 5 and the valve seat 6; by using the elastic element 601 to push the valve seat 6 to move, the sealing between the valve seat 6 and the valve ball 5 is self-adjusted, thereby improving the sealing between the valve seat 6 and the valve ball 5 and preventing leakage; The medium enters the regulating groove 101 through the tiny through hole 602 on the valve seat 6. The pressure of the medium pushes the valve seat 6 towards the valve ball 5, so that the valve seat 6 is tightly attached to the valve ball 5, thereby achieving a self-tightening seal between the valve seat 6 and the valve ball 5.

[0016] See appendix Figure 1-2As shown, the valve body 1 is provided with an adjustment groove 101 for easy adjustment of the valve seat 6; the elastic element 601 is located in the adjustment groove 101; the micro-through hole 602 on the valve seat 6 communicates with the adjustment groove 101, allowing the medium to enter the adjustment groove 101 through the micro-through hole 602 and use the pressure of the medium to push the valve seat 6 and the valve ball 5 to achieve a self-tightening seal; the medium flows into the adjustment groove 101 through the micro-through hole 602, and as the pressure in the adjustment groove 101 increases, it pushes the valve seat 6 along the adjustment groove 101 towards the valve ball 5, and tightly adheres to the surface of the valve ball 5, thereby achieving a self-tightening seal between the valve seat 6 and the valve ball 5 and improving the valve sealing effect.

[0017] See appendix Figure 2 As shown, the valve seat 6 includes a base 603, a hard alloy layer 604 embedded in the center of the base 603 to achieve a hard seal with the valve ball 5, and a flexible graphite layer 605 to achieve a soft seal with the valve ball 5; the flexible graphite layer 605 is located on the outer ring of the hard alloy layer 604 to achieve a multi-layer seal with the valve ball 5; by utilizing the hard alloy layer 604 and the flexible graphite layer 605 on the base 603 to directly contact the surface of the valve ball 5, a multi-layer seal for the valve ball 5 is achieved, which also improves the wear resistance of the valve seat 6, thereby improving the sealing performance between the valve seat 6 and the valve ball 5 and preventing leakage.

[0018] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A pneumatic inclined rod type discharge ball valve, comprising a valve body (1), a valve cover (2) mounted on the valve body (1), a pneumatic actuator (3) mounted on the valve cover (2), a valve stem (4) connected to the pneumatic actuator (3), and a valve ball (5) mounted on the valve stem (4); a valve seat (6) is also installed inside the valve body (1); characterized in that... The valve seat (6) is movably installed inside the valve body (1) and an elastic element (601) installed between the valve seat (6) and the valve body (1) to push the valve seat (6) to adjust the sealing between the valve ball (5) and the valve seat (6); the valve seat (6) is also provided with a small through hole (602) to achieve self-sealing between the valve ball (5) and the valve seat (6).

2. The pneumatic inclined rod type discharge ball valve according to claim 1, characterized in that: The valve body (1) is provided with an adjustment groove (101) to facilitate the adjustment of the valve seat (6); the elastic element (601) is located in the adjustment groove (101).

3. The pneumatic inclined rod type discharge ball valve according to claim 2, characterized in that: The tiny through hole (602) on the valve seat (6) is connected to the regulating groove (101), so that the medium enters the regulating groove (101) through the tiny through hole (602) and uses the pressure of the medium to push the valve seat (6) and the valve ball (5) to achieve a self-tightening seal.

4. The pneumatic inclined rod type discharge ball valve according to claim 1, characterized in that: The valve seat (6) includes a base (603), a hard alloy layer (604) embedded in the center of the base (603) to achieve a hard seal with the valve ball (5), and a flexible graphite layer (605) to achieve a soft seal with the valve ball (5).

5. A pneumatic inclined rod type discharge ball valve according to claim 4, characterized in that: The flexible graphite layer (605) is located on the outer ring of the hard alloy layer (604) and achieves multi-layer sealing with the valve ball (5).

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