Leak-proof sealing structure of pneumatic O-shaped ball valve

Abstract

The leakproof sealing structure of the pneumatic O-shaped ball valve comprises a valve body and a pneumatic mechanism, the pneumatic mechanism is fixedly installed on the upper surface of the valve body, cover plates are fixedly embedded in the surfaces of the two ends of the valve body, fasteners are embedded in the surfaces of the cover plates, the number of the fasteners is four, and the number of the fasteners is four. And an inserting rod is embedded in the position, located among the four fasteners, of the surface of the cover plate, a ball core is movably installed in the valve body, rubber rings are embedded in the positions, located on the two sides of the ball core, of the interior of the valve body, and the surface, located in the valve body, of the inserting rod is sleeved with a sealing gasket. According to the leakproof sealing structure of the pneumatic O-shaped ball valve, even if the rubber ring is abraded, the rubber ring can be kept in a state of being in close contact with the ball core, so that the service life of the rubber ring is prolonged, and the use cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a leak-proof sealing structure for a pneumatic O-type ball valve. Background Technology

[0002] A ball valve is a valve in which the opening and closing element is driven by the valve stem and rotates around the axis of the ball valve. Pneumatic ball valves are widely used because of their accurate opening and closing and convenient installation and use. Pneumatic ball valves use a control signal actuator to make the ball stem drive the ball core to rotate, thereby opening or closing the valve.

[0003] The ball valve has a sealing structure installed inside and on both sides of the ball core. When the ball valve rotates, it will rub against the sealing structure. Over time, the friction will cause the sealing mechanism to wear out. The contact tightness between the worn sealing structure and the ball core will decrease, which will affect the sealing performance when the ball core is closed. The only solution is to replace the parts in contact with the ball core, which is not only troublesome but also increases the cost of use. Utility Model Content

[0004] The main objective of this invention is to provide a leak-proof sealing structure for a pneumatic O-type ball valve, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A leak-proof sealing structure for a pneumatic O-type ball valve includes a valve body and a pneumatic mechanism. The pneumatic mechanism is fixedly installed on the upper surface of the valve body. Cover plates are fixedly embedded on both ends of the valve body. Fasteners are embedded on the surface of the cover plates. There are four fasteners. Insert rods are embedded on the surface of the cover plates and between the four fasteners. A ball core is movably installed inside the valve body. Rubber rings are embedded on both sides of the ball core inside the valve body. A sealing gasket is fitted on the surface of the insert rod inside the valve body.

[0007] Preferably, a reinforcing sleeve is fixedly fitted on the surface of the rubber ring, and the rear surface of the reinforcing sleeve is provided with four threaded grooves.

[0008] Preferably, the valve body has an embedding groove inside and on both sides of the ball core, and the valve body has an annular groove on both ends of the surface, with a rod groove inside the annular groove.

[0009] Preferably, a threaded post is fixedly installed on the rear surface of the insertion rod, the rear end of the insertion rod extends through the rod groove into the embedding groove, a fastening groove is provided inside the annular groove, a stop ring is fixedly sleeved on the surface of the insertion rod inside the rod groove, and a strong spring is sleeved on the surface of the insertion rod inside the rod groove in front of the stop ring.

[0010] Preferably, the rubber ring is embedded in the embedding groove, the threaded post is embedded in the threaded groove, and the sealing gasket is sleeved on the surface of the insert rod inside the embedding groove.

[0011] Preferably, the rear end of the fastener passes through the cover plate and is embedded in the fastening groove, the cover plate is fixedly embedded in the annular groove, and the cover plate is fixed to the valve body by the fastener.

[0012] Preferably, the ball core is in contact with the rubber ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In this invention, by setting up a valve body, rubber ring, fastener and insert rod to cooperate with each other, as the ball core wears on the rubber ring during rotation, the strong spring located inside the rod groove will push the stop ring, thereby causing the insert rod to push the rubber ring to make close contact with the ball core again. In this way, the rubber ring can continue to be used, which not only improves the service life of the rubber ring, but also reduces the cost of use. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the anti-leakage sealing structure of a pneumatic O-type ball valve according to this utility model;

[0016] Figure 2 This is a partial cross-sectional view of the anti-leakage sealing structure of a pneumatic O-type ball valve according to the present invention;

[0017] Figure 3 This utility model relates to a leak-proof sealing structure for a pneumatic O-type ball valve. Figure 2 Enlarged view of point A in the middle.

[0018] In the diagram: 1. Valve body; 101. Embedded groove; 102. Annular groove; 103. Rod groove; 2. Pneumatic mechanism; 3. Cover plate; 4. Ball core; 5. Rubber ring; 501. Reinforcing sleeve; 502. Threaded groove; 6. Sealing gasket; 7. Fastener; 8. Insert rod; 801. Threaded post; 802. Stop ring; 803. Heavy spring. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figure 1-3The diagram shows a leak-proof sealing structure for a pneumatic O-type ball valve, comprising a valve body 1 and a pneumatic mechanism 2. The pneumatic mechanism 2 is fixedly installed on the upper surface of the valve body 1. Cover plates 3 are fixedly embedded on both ends of the valve body 1. Fasteners 7 are embedded on the surface of the cover plates 3, and there are four fasteners 7. Insert rods 8 are embedded on the surface of the cover plates 3 and between the four fasteners 7. A ball core 4 is movably installed inside the valve body 1. Rubber rings 5 ​​are embedded on both sides of the ball core 4 inside the valve body 1. A sealing gasket 6 is fitted on the surface of the insert rod 8 inside the valve body 1.

[0021] A reinforcing sleeve 501 is fixedly fitted onto the surface of the rubber ring 5. The rear surface of the reinforcing sleeve 501 has four threaded grooves 502. An embedding groove 101 is formed inside the valve body 1 on both sides of the ball core 4. Annular grooves 102 are formed on the surfaces of both ends of the valve body 1. A rod groove 103 is formed inside the annular groove 102. A threaded post 801 is fixedly installed on the rear surface of the insertion rod 8. The rear end of the insertion rod 8 extends through the rod groove 103 into the embedding groove 101. A fastening groove is formed inside the annular groove 102. A stop ring 802 is fixedly fitted onto the surface of the insertion rod 8 inside the rod groove 103. A strong spring 803 is fitted on the surface of the insert rod 8 and in front of the stop ring 802. The strong spring 803 exerts a pushing force on the stop ring 802 close to the ball core 4. The rubber ring 5 is embedded in the mounting groove 101, the threaded post 801 is embedded in the threaded groove 502, and the sealing gasket 6 is fitted on the surface of the insert rod 8 inside the mounting groove 101. The cooperation between the threaded post 801 and the threaded groove 502 can fix the insert rod 8 and the rubber ring 5 together. The rear end of the fastener 7 passes through the cover plate 3 and is embedded in the fastening groove. The cover plate 3 is fixedly embedded in the annular groove 102 and is fixed to the valve body 1 by the fastener 7. The ball core 4 is in contact with the rubber ring 5.

[0022] It should be noted that this utility model is a leak-proof sealing structure for a pneumatic O-type ball valve. During use, as the ball core 4 wears down the rubber ring 5 during rotation, the powerful spring 803 located inside the rod groove 103 will push the stop ring 802, thereby causing the insertion rod 8 to push the rubber ring 5 to make close contact with the ball core 4 again. This allows the rubber ring 5 to continue to be used, keeping it in close contact with the ball core 4. This not only improves the service life of the rubber ring 5 but also reduces the cost of use. If the elasticity of the powerful spring 803 decreases, it can be easily replaced by removing the cover plate 3.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A leak-proof sealing structure for a pneumatic O-ring ball valve, characterized in that: The valve body (1) includes a valve body (1) and a pneumatic mechanism (2). The pneumatic mechanism (2) is fixedly installed on the upper surface of the valve body (1). Cover plates (3) are fixedly embedded on both ends of the valve body (1). Fasteners (7) are embedded on the surface of the cover plates (3). There are four fasteners (7). Insert rods (8) are embedded on the surface of the cover plates (3) and between the four fasteners (7). A ball core (4) is movably installed inside the valve body (1). Rubber rings (5) are embedded on both sides of the ball core (4) inside the valve body (1). A sealing gasket (6) is fitted on the surface of the insert rod (8) inside the valve body (1).

2. The anti-leakage sealing structure of a pneumatic O-type ball valve according to claim 1, characterized in that: The surface of the rubber ring (5) is fixedly fitted with a reinforcing sleeve (501), and the rear surface of the reinforcing sleeve (501) is provided with a threaded groove (502), and the number of the threaded grooves (502) is four.

3. The anti-leakage sealing structure of a pneumatic O-type ball valve according to claim 2, characterized in that: The valve body (1) has an embedding groove (101) inside and on both sides of the ball core (4), and the valve body (1) has an annular groove (102) on both ends of the surface. The annular groove (102) has a rod groove (103) inside.

4. The anti-leakage sealing structure of a pneumatic O-type ball valve according to claim 3, characterized in that: A threaded post (801) is fixedly installed on the rear surface of the insertion rod (8). The rear end of the insertion rod (8) extends through the rod groove (103) into the embedding groove (101). A fastening groove is provided inside the annular groove (102). A stop ring (802) is fixedly sleeved on the surface of the insertion rod (8) located inside the rod groove (103). A strong spring (803) is sleeved on the surface of the insertion rod (8) located inside the rod groove (103) and in front of the stop ring (802).

5. The anti-leakage sealing structure of a pneumatic O-type ball valve according to claim 4, characterized in that: The rubber ring (5) is embedded in the embedding groove (101), the threaded post (801) is embedded in the threaded groove (502), and the sealing gasket (6) is sleeved on the surface of the insert (8) inside the embedding groove (101).

6. The anti-leakage sealing structure of a pneumatic O-type ball valve according to claim 5, characterized in that: The rear end of the fastener (7) passes through the cover plate (3) and is embedded in the fastening groove. The cover plate (3) is fixedly embedded in the annular groove (102). The cover plate (3) is fixed to the valve body (1) by the fastener (7).

7. The anti-leakage sealing structure of a pneumatic O-type ball valve according to claim 6, characterized in that: The ball core (4) is in contact with the rubber ring (5).

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