Pneumatic ball valve

Abstract

The utility model belongs to the technical field of ball valves, and particularly relates to a pneumatic ball valve which comprises a valve body and a pneumatic mechanism, the bottom of the pneumatic mechanism is fixedly connected with a transmission shell, the transmission shell is fixedly connected with the top of the valve body, and the output end of the pneumatic mechanism is fixedly connected with a valve rod. The bottom of the valve rod sequentially penetrates through the transmission shell and the top of the valve body and extends inwards, the valve body is provided with a penetrating opening corresponding to the valve rod, the penetrating opening is filled with sealing filler, a filler gland corresponding to the sealing filler is inserted into the inner bottom of the transmission shell, and the end, located in the valve body, of the valve rod is fixedly connected with a ball. One end of the valve body is fixedly connected with an end cover, a feeding port is formed in the end cover, a discharging port is formed in the end, away from the end cover, of the valve body, and through ports corresponding to the discharging port and the feeding port are formed in the ball body. According to the pneumatic ball valve, due to the arrangement of multiple sealing structures, the overall sealing performance of the pneumatic ball valve can be effectively improved, and therefore the use stability of the pneumatic ball valve is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to ball valve technical field especially relates to pneumatic ball valve. BACKGROUND

[0002] Pneumatic ball valve drives the rotation of the ball through compressed air, realizes the opening and closing of the pipeline, and when the ball channel is aligned with the inlet and outlet of the valve body, the fluid passes through, and after rotating 90 degrees, the channel is perpendicular, and the fluid is cut off. Its core component is a pneumatic actuator, which includes a cylinder, a piston and a control element, which converts compressed air into mechanical kinetic energy to drive the valve rod.

[0003] However, the existing pneumatic ball valve has a simple structure, and lacks a certain sealing structure in the pneumatic ball valve, thereby affecting the use stability of the pneumatic ball valve. UTILITY MODEL CONTENT

[0004] The utility model discloses a pneumatic ball valve to solve the problem of lacking a certain sealing structure in the pneumatic ball valve in the background art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The pneumatic ball valve comprises a valve body and a pneumatic mechanism, the bottom of the pneumatic mechanism is fixedly connected with a transmission shell, the transmission shell is fixedly connected with the top of the valve body, the output end of the pneumatic mechanism is fixedly connected with a valve rod, the bottom of the valve rod penetrates the transmission shell and the top of the valve body in sequence and extends inward, the valve body is provided with a penetration opening corresponding to the valve rod, the penetration opening is filled with sealing packing, the inner bottom of the transmission shell is inserted with a packing gland corresponding to the sealing packing, one end of the valve rod in the valve body is fixedly connected with a ball, one end of the valve body is fixedly connected with an end cover, the end cover is provided with a feed inlet, the end of the valve body away from the end cover is provided with a discharge outlet, the ball is provided with a through hole corresponding to the discharge outlet and the feed inlet, the end of the valve body close to the end cover and the discharge outlet is fixedly inserted with a sealing ring, and the sealing ring is in contact with the outer wall of the ball on one side.

[0007] Preferably, the top of the pneumatic mechanism and the transmission shell are fixedly connected through a plurality of fastening bolts.

[0008] Preferably, the end cover and the valve body are fixedly connected through a fixing bolt.

[0009] Preferably, a sealing pad is fixedly inserted between the end cover and the valve body.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] In the utility model, the overall sealing property of the pneumatic ball valve can be effectively improved through the arrangement of multiple sealing structures, so as to ensure the use stability of the pneumatic ball valve.

[0012] 2. The utility model discloses the setting of fastening bolt can conveniently dismouting to pneumatic mechanism, the setting of fixed bolt can conveniently dismouting to end cover, the setting of sealing washer can guarantee the connecting leakproofness between end cover and valve body. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model discloses the structure diagram of pneumatic ball valve is provided.

[0014] In the drawing: 1 valve body, 2 pneumatic mechanism, 3 transmission shell, 4 valve stem, 5 sealing packing, 6 packing gland, 7 ball, 8 end cover, 9 discharge port, 10 sealing ring, 11 fastening bolt, 12 fixed bolt, 13 sealing washer. DETAILED DESCRIPTION

[0015] Below, the technical scheme in the utility model embodiment will be clearly and completely described in conjunction with the drawings in the utility model embodiment, and obviously, the described embodiment only is a part of the embodiment of the utility model, and is not all the embodiment.

[0016] Refer to Figure 1 , pneumatic ball valve, including valve body 1 and pneumatic mechanism 2, the bottom fixed connection of pneumatic mechanism 2 has transmission shell 3, for supporting valve stem 4, pneumatic mechanism 2 and the top of transmission shell 3 are fixedly connected through a plurality of fastening bolts 11, conveniently dismouting pneumatic mechanism 2, transmission shell 3 and the top of valve body 1 are fixedly connected;

[0017] In the embodiment, the output end of pneumatic mechanism 2 is fixedly connected with valve stem 4 for driving ball 7 to rotate, the bottom of valve stem 4 extends inwardly through transmission shell 3 and the top of valve body 1 in sequence, valve body 1 is provided with a through hole corresponding to valve stem 4, the through hole is filled with sealing packing 5 to ensure the sealing between valve stem 4 and the inner wall of the through hole, the inner bottom of transmission shell 3 is provided with packing gland 6 corresponding to sealing packing 5 for pressing sealing packing 5 tightly;

[0018] In the embodiment, one end of valve stem 4 fixedly connected with ball 7 in valve body 1 is used for controlling the flow of material, one end of valve body 1 is fixedly connected with end cover 8, end cover 8 and valve body 1 are fixedly connected by fixed bolt 12, end cover 8 is provided with inlet, end cover 8 and valve body 1 are fixedly inserted with sealing washer 13 to ensure the sealing between end cover 8 and valve body 1;

[0019] In the embodiment, one end of valve body 1 away from end cover 8 is provided with discharge port 9, ball 7 is provided with through hole corresponding to discharge port 9 and inlet, for the passage of material, one end of valve body 1 close to end cover 8 and discharge port 9 is fixedly inserted with sealing ring 10, one side of sealing ring 10 is in contact with the outer wall of ball 7 to ensure the sealing between ball 7 and valve body 1.

[0020] In the embodiment, the sealing packing 5 is arranged, the connection sealing between the valve stem 4, the transmission shell 3 and the valve body 1 is guaranteed, meanwhile, the packing gland 6 can effectively fix the sealing packing 5, the sealing ring 10 is arranged, the sealing between the ball 7 and the inner wall of the valve body 1 is guaranteed.

[0021] In the embodiment, the multiple sealing structures are arranged, the overall sealing of the pneumatic ball valve is effectively improved, and the use stability of the pneumatic ball valve is guaranteed.

[0022] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the application concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. Pneumatic ball valve comprising a valve body (1) and a pneumatic mechanism (2), characterized in that: The bottom of the pneumatic mechanism (2) is fixedly connected with a transmission shell (3), the transmission shell (3) is fixedly connected with the top of the valve body (1), the output end of the pneumatic mechanism (2) is fixedly connected with a valve rod (4), the bottom of the valve rod (4) extends inwardly through the transmission shell (3) and the top of the valve body (1) in sequence, the valve body (1) is provided with a through hole corresponding to the valve rod (4), the through hole is filled with a sealing packing (5), the inner bottom of the transmission shell (3) is inserted with a packing gland (6) corresponding to the sealing packing (5), one end of the valve rod (4) in the valve body (1) is fixedly connected with a ball (7), one end of the valve body (1) is fixedly connected with an end cover (8), the end cover (8) is provided with an inlet, one end of the valve body (1) away from the end cover (8) is provided with an outlet (9), the ball (7) is provided with a through hole corresponding to the outlet (9) and the inlet, the end of the valve body (1) close to the end cover (8) and the outlet (9) is fixedly inserted with a sealing ring (10), one side of the sealing ring (10) is in contact with the outer wall of the ball (7).

2. Aerodynamic ball valve according to claim 1, characterized in that: The top of the pneumatic mechanism (2) and the transmission shell (3) are fixedly connected through a plurality of fastening bolts (11).

3. Aerodynamic ball valve according to claim 1, characterized in that: The end cover (8) and the valve body (1) are fixedly connected through a fixing bolt (12).

4. The aerodynamic ball valve of claim 1, wherein: The end cover (8) and the valve body (1) are fixedly inserted with a sealing gasket (13).

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