CN207278927U - A kind of hard seal floating ball valve - Google Patents

Abstract

The utility model discloses a hard-sealed floating ball valve, which comprises a valve body, a valve cover is arranged on one side of the valve body, a valve chamber is arranged in the valve body, a valve ball is arranged in the cavity of the valve chamber, and the valve ball The top is provided with a valve stem, the outer wall of the valve stem is provided with a positioning piece, the bottom of the positioning piece is provided with packing, and the inside of the valve ball is provided with a medium channel. The utility model is provided with a sealing piece at the top and bottom of the valve chamber and makes the sealing piece fit the surface of the valve ball, cooperates with the first gasket and the second gasket, and makes the gap between the valve ball and the valve chamber when the valve is opened and closed. The fit is tighter and the sealing performance is improved. By installing a buffer pad, a second connecting pipe and a sealing block at one end of the water inlet pipe, the outer wall of the second connecting pipe and the inner wall of the water inlet pipe are bonded by using the sealing block. When the valve is opened , The buffer pad can reduce the pressure shock brought by the fluid when it enters the valve chamber, prolonging the service life.

Description

A Hard Seal Floating Ball Valve

technical field

The utility model relates to the field of valves, in particular to a hard-sealed floating ball valve.

Background technique

The ball of the floating ball valve is floating. Under the action of medium pressure, the ball can produce a certain displacement and press tightly on the sealing surface of the outlet end to ensure the seal of the outlet end. The floating ball floating ball valve has a simple structure and good sealing performance, but the ball bears all the load of the working medium and is transmitted to the outlet sealing ring. Therefore, it is necessary to consider whether the material of the sealing ring can withstand the working load of the ball medium. , the sphere may be offset. This structure is generally used for medium and low pressure floating ball valves. The main features of the floating ball valve are its compact structure, reliable sealing, simple structure, and convenient maintenance. It is not only suitable for working media, but also suitable for media with harsh working conditions, such as oxygen, hydrogen peroxide, methane and ethylene, etc., and has been widely used in various industries. The body of the floating ball valve can be integral or combined.

Floating ball valves are divided into hard seal type and soft seal type, which are mainly determined by the material of the valve ball itself. The traditional hard-sealed floating ball valve has poor sealing performance during use, and the water inlet end is often subjected to pressure shocks generated by fluid flow when the valve is suddenly opened, which will easily affect the sealing performance of the floating ball valve over time.

Therefore, it is necessary to invent a hard-sealed floating ball valve to solve the above problems.

Utility model content

The purpose of this utility model is to provide a hard-sealed floating ball valve to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: a hard-sealed floating ball valve, including a valve body, a valve cover is provided on one side of the valve body, a valve chamber is provided in the valve body, and a valve chamber is provided in the valve chamber. There is a valve ball, the top of the valve ball is provided with a valve stem, the outer wall of the valve stem is provided with a positioning piece, the bottom of the positioning piece is provided with packing, the inside of the valve ball is provided with a medium channel, and the valve ball has a One side is provided with a first gasket and the other side is provided with a second gasket, the top and bottom of the valve chamber are provided with sealing sheets, one side of the valve chamber is provided with a first connecting pipe and the other side is provided with a second gasket. Two connecting pipes, the outer walls of the first connecting pipe and the second connecting pipe are both sleeved with sealing blocks, and one end of the second connecting pipe is provided with a buffer pad.

Preferably, the valve cover is provided with screws, and the valve cover is detachably connected to the valve body through screws.

Preferably, the first gasket is arranged at one end of the first connecting pipe, and the second gasket is arranged at one end of the second connecting pipe.

Preferably, the sealing sheet, the first gasket and the second gasket are all attached to the surface of the valve ball.

Preferably, a water inlet pipe runs through the valve cover, and a water outlet pipe runs through the valve body, and the water inlet pipe and the water outlet pipe are connected to the medium channel, and the water inlet pipe, the water outlet pipe and the medium channel Set on the same horizontal plane, the first connecting pipe is arranged at one end of the water outlet pipe, and the second connecting pipe is arranged at one end of the water inlet pipe.

Preferably, both the valve body and the valve cover are provided with mounting flanges, and the top of the valve stem is provided with a handle.

The technical effects and advantages of the utility model: by providing a sealing sheet on the top and bottom of the valve chamber and making the sealing sheet fit the surface of the valve ball, and cooperating with the first gasket and the second gasket, the valve can be opened and closed when the valve is closed. The fit between the ball and the valve chamber is tighter and the sealing performance is improved. By installing a buffer pad, a second connecting pipe and a sealing block at one end of the water inlet pipe, the outer wall of the second connecting pipe and the inner wall of the water inlet pipe are adhered to each other by using the sealing block. Together, when the valve is opened, the buffer pad can reduce the pressure shock brought by the fluid when it enters the valve chamber, prolonging the service life.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

In the figure: 1 valve body, 2 valve cover, 3 valve chamber, 4 valve ball, 5 valve stem, 6 positioning piece, 7 packing, 8 medium channel, 9 first gasket, 10 second gasket, 11 sealing piece, 12 first connecting pipe, 13 second connecting pipe, 14 sealing block, 15 buffer pad, 16 screw, 17 mounting flange, 18 handle, 19 water inlet pipe, 20 water outlet pipe.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The utility model provides a hard-sealed floating ball valve as shown in Figure 1, which includes a valve body 1, a valve cover 2 is provided on one side of the valve body 1, and a valve chamber 3 is arranged inside the valve body 1. The inner cavity of the valve chamber 3 is provided with a valve ball 4, the top of the valve ball 4 is provided with a valve stem 5, the outer wall of the valve stem 5 is provided with a positioning piece 6, the bottom of the positioning piece 6 is provided with a packing 7, the valve The inside of the ball 4 is provided with a medium passage 8, the first gasket 9 is provided on one side of the valve ball 4 and the second gasket 10 is provided on the other side, and the top and bottom of the valve chamber 3 are provided with sealing sheets 11 One side of the valve chamber 3 is provided with a first connecting pipe 12 and the other side is provided with a second connecting pipe 13, and the outer walls of the first connecting pipe 12 and the second connecting pipe 13 are both sleeved with a sealing block 14, so One end of the second connecting pipe 13 is provided with a buffer pad 15, and a buffer pad 15, a second connecting pipe 13 and a sealing block 14 are provided at one end of the water inlet pipe 19, and the outer wall of the second connecting pipe 13 is connected to the water inlet by using the sealing block 14. The inner wall of the pipeline 19 is bonded. When the valve is opened, the buffer pad 15 can reduce the pressure shock caused by the fluid entering the valve chamber 3 and prolong the service life.

The bonnet 2 is provided with screws 16, the bonnet 2 is detachably connected with the valve body 1 through the screws 16, the first gasket 9 is arranged at one end of the first connecting pipe 12, and the second gasket 10 Set at one end of the second connecting pipe 13, the sealing sheet 11, the first gasket 9 and the second gasket 10 are all attached to the surface of the valve ball 4, and the sealing sheet 11 and the Make the sealing sheet 11 fit the surface of the valve ball 4, and cooperate with the first gasket 9 and the second gasket 10, so that the valve ball 4 and the valve chamber 3 fit more tightly when the valve is opened and closed, and the sealing performance is improved , the valve cover 2 is provided with a water inlet pipe 19, and the valve body 1 is provided with a water outlet pipe 20, and the water inlet pipe 19 and the water outlet pipe 20 are connected to the medium channel 8, and the water inlet pipe 19. The water outlet pipe 20 and the medium channel 8 are arranged on the same horizontal plane, the first connecting pipe 12 is arranged at one end of the water outlet pipe 20, the second connecting pipe 13 is arranged at one end of the water inlet pipe 19, the valve body 1 and the valve The cover 2 is provided with mounting flanges 17, which are easy to disassemble and install. The top of the valve stem 5 is provided with a handle 18, which is convenient for starting and closing the valve.

The working principle of the utility model: when in use, install the valve through the installation flange 17, turn the handle 18 to drive the valve ball 4 to rotate in the inner cavity of the valve chamber 3 to control the opening and closing of the valve, and use the sealing block 14 to make the second connecting pipe 13 The outer wall is attached to the inner wall of the water inlet pipe 19. When the valve is opened, the buffer pad 15 can reduce the pressure shock caused by the fluid entering the valve chamber 3 and prolong the service life. The sealing sheets 11 provided on the top and bottom of the valve chamber 3 And make the sealing sheet 11 and the surface of the valve ball 4 fit together, cooperate with the first gasket 9 and the second gasket 10, make the valve ball 4 and the valve chamber 3 fit more tightly when the valve is opened and closed, and improve the sealing performance.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model, All should be included within the protection scope of the present utility model.

Claims (6)

1. A hard-sealed floating ball valve, including a valve body (1), characterized in that: a valve cover (2) is provided on one side of the valve body (1), and a valve chamber ( 3), the inner cavity of the valve chamber (3) is provided with a valve ball (4), the top of the valve ball (4) is provided with a valve stem (5), and the outer wall of the valve stem (5) is provided with a positioning piece ( 6), the bottom of the positioning piece (6) is provided with packing (7), the inside of the valve ball (4) is provided with a medium channel (8), and the side of the valve ball (4) is provided with a first gasket (9) and the other side is provided with a second gasket (10), the top and bottom of the valve chamber (3) are provided with sealing sheets (11), and one side of the valve chamber (3) is provided with a first connection The pipe (12) and the other side are provided with a second connecting pipe (13), and the outer walls of the first connecting pipe (12) and the second connecting pipe (13) are both sleeved with a sealing block (14). A buffer pad (15) is provided at one end of the connecting pipe (13). 2. A hard-sealed floating ball valve according to claim 1, characterized in that: the valve cover (2) is provided with a screw (16), and the valve cover (2) is connected to the valve body through the screw (16) (1) Detachable connection. 3. A hard-sealed floating ball valve according to claim 1, characterized in that: the first gasket (9) is set at one end of the first connecting pipe (12), and the second gasket (10) is set At one end of the second connecting pipe (13). 4. A hard-sealed floating ball valve according to claim 1, characterized in that: the sealing sheet (11), the first gasket (9) and the second gasket (10) are all connected to the valve ball (4) Surface fit. 5. A hard-sealed floating ball valve according to claim 1, characterized in that: a water inlet pipe (19) runs through the valve cover (2), and a water outlet pipe runs through the valve body (1). The pipeline (20), the water inlet pipeline (19) and the water outlet pipeline (20) are all connected to the medium channel (8), and the water inlet pipeline (19), the water outlet pipeline (20) and the medium channel (8) are set as On the same horizontal plane, the first connecting pipe (12) is arranged at one end of the water outlet pipe (20), and the second connecting pipe (13) is arranged at one end of the water inlet pipe (19). 6. A hard-sealed floating ball valve according to claim 1, characterized in that: the valve body (1) and the valve cover (2) are provided with mounting flanges (17), and the valve stem (5 ) with a handle (18) on top.