CN107575599A - A kind of structure for the high sealing liquid flow control ball valve for being easy to connect - Google Patents

Abstract

The invention discloses a structure of a highly sealed liquid flow control ball valve which is convenient for connection, comprising an upper valve housing and a lower valve housing, a ball valve is arranged in the middle of the lower valve housing, the top side of the valve body of the ball valve corresponds to the upper A first leak-proof gasket is provided on the circumference of the bottom end of the valve housing, and a second leak-proof gasket is provided on the bottom side of the valve body of the ball valve and the circumference of the inner cavity of the corresponding lower valve housing. An elastic jacking spring is also arranged below the pad body of the second leak-proof gasket, and the outer ring of the outlet of the internal thread connection and the outer circumferential shell corresponding to the upper valve housing are uniformly provided with external thread lines, and the upper valve housing A sealing connection groove with a ring-shaped cross-sectional shape is also provided at the position of the top end face. The invention can maintain the sealing effect all the time during the whole ball valve rotation process, has longer service life, ensures the actual external connection effect of the traditional ball valve, and expands the scope of application.

Description

A structure of a highly sealed liquid flow control ball valve which is convenient for connection

technical field

The invention relates to the technical field related to valves, in particular to a structure of a highly sealed liquid flow control ball valve which is convenient for connection.

Background technique

The ball valve is a valve whose opening and closing parts are driven by the valve stem and rotate around the axis of the ball valve. It can also be used for the regulation and control of fluids, among which the hard-sealed V-shaped ball valve has a strong shear force between its V-shaped ball core and the metal valve seat of surfacing welding carbide, and is especially suitable for fibers and tiny solid particles. etc. medium. The multi-way ball valve can not only flexibly control the confluence, diversion, and flow direction switching of the medium on the pipeline, but also close any channel and connect the other two channels. This type of valve should generally be installed horizontally in the pipeline. According to the driving mode, the ball valve is divided into: pneumatic ball valve, electric ball valve, manual ball valve. However, the structural design of the traditional ball valve is unreasonable, the installation effect of the sealing ring is not good, and the problem of water leakage is prone to occur, which affects the sealing safety of the valve. However, the scope of application of the traditional ball valve is also limited in the actual external connection of the pipeline, and direct welding connection cannot be used. Improvements are needed.

Contents of the invention

The object of the present invention is to provide a structure of a high-tightness liquid flow control ball valve which is convenient for connection, so as to solve the problems raised in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A structure of a highly sealed liquid flow control ball valve that is easy to connect, including an upper valve housing and a lower valve housing, a ball valve is arranged at the middle of the lower valve housing, and the center of the left side wall of the ball valve is integrally fixed A ball valve core rod is provided, and two O-shaped sealing rings are arranged at the position where the outer diameter of the ball valve core rod is in contact with the shell of the lower valve housing. The top side of the valve body of the ball valve corresponds to the upper valve housing A first leak-proof gasket is provided on the circumference of the bottom end of the shell of the ball valve, and a second leak-proof gasket is provided on the bottom side of the valve body of the ball valve and the circumference of the inner cavity of the corresponding lower valve housing. An elastic jacking spring is also arranged under the pad body of the second leak-proof gasket, and the spring top of the elastic jack-up spring is arranged on the lower surface of the pad body of the second leak-proof gasket. The bottom end of the spring is arranged on the convex edge of the inner cavity at the bottom of the lower valve housing, and the inner thread connection inlet is arranged on the inner cavity circumference side wall of the bottom end of the lower valve housing, and the top end of the upper valve housing The internal thread connection outlet is correspondingly arranged on the peripheral side wall of the internal cavity, and the outer ring of the internal thread connection outlet and the outer circumferential shell corresponding to the upper valve housing are evenly provided with external thread lines. There is also a ring-shaped sealing connection groove at the position of the top end surface. The upper end of the internal thread connection inlet is connected with the valve body cavity above it. The valve body cavity communicates with the internal thread connection outlet through the circulation buffer cavity. Together.

As a further solution of the present invention: the upper valve housing and the lower valve housing are butted up and down to form a whole.

As a further solution of the present invention: the first anti-leakage gasket and the second anti-leakage gasket are both made of soft rubber materials.

As a further solution of the present invention: a guiding and fixing ring is also provided on the circumferential inner wall at the position where the internal thread connection outlet and the circulation buffer chamber are connected to each other, and the ring body of the guiding and fixing ring faces to the side of the internal thread connection outlet. One side is provided with an inclined conical surface structure.

Compared with the prior art, the beneficial effect of the present invention is: the present invention adds a first leak-proof gasket, a second leak-proof gasket and an elastic jacking spring on the basis of the traditional single ball valve, so that the leak-proof gasket can To a certain degree of anti-leakage effect, once the actual liquid flow rate is too large and impacts the gasket and separates from the ball valve, the elastic jacking spring can continuously provide the second anti-leakage spring under the action of its own elastic force at the bottom in real time. The leaky sealing gasket exerts a large jacking force, so that the sealing effect can be maintained throughout the ball valve rotation process, thereby further ensuring the safety of the entire ball valve, longer service life and higher sealing performance; Moreover, the added sealing connection groove and external thread pattern can realize the direct welding connection effect between the whole ball valve and other pipe bodies, and the added internal thread connection outlet can directly realize the direct connection effect between the whole ball valve and other pipe bodies, thus greatly expanding the The pipe body connection method of the traditional ball valve further ensures the actual external connection effect of the traditional ball valve, expands the scope of application, and meets the higher demand for ball valves.

Description of drawings

Fig. 1 is a structural schematic diagram of the structure of a high-tightness liquid flow control ball valve which is convenient for connection.

Fig. 2 is an enlarged schematic diagram of the structure at A in the structure of a high-tight liquid flow control ball valve that is easy to connect.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figures 1-2, in the embodiment of the present invention, a structure of a high-tight liquid flow control ball valve that is convenient for connection includes an upper valve housing 1 and a lower valve housing 2, and the upper valve housing 1 and the lower valve housing The housing 2 is connected up and down with each other, and a ball valve 9 is arranged in the middle of the lower valve housing 2. A ball valve core rod 12 is integrally fixed at the center of the left side wall of the ball valve 9. The ball valve core Two O-rings 13 are arranged at the position where the outer diameter of the rod 12 is in contact with the housing of the lower valve housing 2. The top side of the valve body of the ball valve 9 corresponds to the housing bottom of the upper valve housing 1. A first anti-leakage gasket 11 is provided on the circumference of the end, and a second anti-leakage gasket 10 is provided on the bottom side of the valve body of the ball valve 9 and the inner cavity of the middle part of the corresponding lower valve housing 2. The first anti-leakage gasket 11 and the second anti-leakage gasket 10 are all made of soft rubber material, and an elastic jacking spring 14 is also arranged under the pad body of the second anti-leakage gasket 10, and the The spring top of the elastic jack-up spring 14 is arranged on the pad body lower surface of the second leak-proof gasket 10, and the spring bottom end of the elastic jack-up spring 14 is arranged on the inner cavity convex edge of the lower valve housing 2 bottom, so that By adding the first anti-leakage gasket 11, the second anti-leakage gasket 10 and the elastic jacking spring 14 on the basis of the traditional single ball valve 9, the anti-leakage gasket plays a certain role in preventing water leakage. Once the actual liquid flow rate exceeds When the ball valve 9 is separated from the ball valve 9 due to impact, the elastic jacking spring 14 can continuously apply a larger jacking force to the second leak-proof gasket 10 in real time at the bottom under the action of its own elastic force. It acts as a force, so that the sealing effect can be maintained throughout the entire ball valve rotation process, thereby further ensuring the safety of the entire ball valve, longer service life, and higher sealing performance; the bottom of the lower valve housing 2 An internal thread connection inlet 3 is provided on the inner cavity circumferential side wall of the end portion, and an internal thread connection outlet 4 is correspondingly provided on the inner cavity circumferential side wall of the top end portion of the upper valve housing 1, and an outer thread connection outlet 4 of the inner thread connection outlet 4 is provided. The ring, the outer circumferential shell corresponding to the upper valve housing 1 is evenly provided with external thread lines 7, and the top end surface of the upper valve housing 1 is also provided with a ring-shaped sealing connection groove 6, The upper end of the internal thread connection inlet 3 and the valve body cavity above it communicate with each other, the valve body cavity communicates with the internal thread connection outlet 4 through the flow buffer chamber 8, and the internal thread connection outlet 4 and the flow buffer chamber 8 communicate with each other A guiding and fixing ring 5 is also arranged on the circumferential inner ring wall at the connection position, and the ring body of the guiding and fixing ring 5 is arranged as an inclined tapered surface structure on the side of the inner thread connection outlet 4, so that the traditional single Structural ball valve pipe The two ends of the connection end are improved, and the added sealing connection groove 6 and external thread pattern 7 can realize the direct welding connection effect of the whole ball valve and other pipe bodies, and the added internal thread connection outlet 4 can directly realize the connection between the whole ball valve and other pipes. The direct connection effect of the pipe body greatly expands the pipe body connection method of the traditional ball valve, and further guarantees the actual external connection effect of the traditional ball valve. The effect greatly expands the scope of application and meets the higher demand for ball valves.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (4)

1. a kind of structure for the high sealing liquid flow control ball valve for being easy to connect, including upper valve chest and lower valve chest, its feature exist In being provided with ball valve at the medium position of the lower valve chest, ball be integrally fixedly installed at the left side wall center of the ball valve Valve core rod, the external diameter of rod body of the ball valve core bar are provided with two O shapes with the opening position that the housing of lower valve chest is in contact and sealed Circle, the first leak-proof sealing pad, institute are provided with the housing bottom circumference circle of valve chest in the valve body top side face of the ball valve, correspondence State the valve body bottom side of ball valve, be correspondingly provided with the second leak-proof sealing pad on the housing central section lumen circumference circle of lower valve chest, institute State and an elasticity jack-up spring is additionally provided with below the pad of the second leak-proof sealing pad, the elasticity jacks up the spring top of spring It is arranged on the pad lower surface of the second leak-proof sealing pad, the spring bottom end that the elasticity jacks up spring is arranged under lower valve chest On the inner chamber convex edge in portion, internal thread connection entrance is provided with the bottom terminal ends lumen circumference side wall of the lower valve chest, it is described Internal thread connection outlet is correspondingly arranged in the top end lumen circumference side wall of upper valve chest, the internal thread connection outlet At outer ring, external screw thread lines, the top end of the upper valve chest are uniformly offered in correspondence on the outer circumference housing of valve chest Face opening position is additionally provided with the sealed connection groove that cross sectional shape is annular, upper end and its top of the internal thread connection entrance Valve body cavity be interconnected together, valve body cavity by flowing buffer chamber and internal thread connection outlet it is interconnected together with.

A kind of 2. structure of high sealing liquid flow control ball valve for being easy to connect according to claim 1, it is characterised in that institute State valve chest and present down to be mutually butted with lower valve chest and link into an integrated entity.

A kind of 3. structure of high sealing liquid flow control ball valve for being easy to connect according to claim 1, it is characterised in that institute The first leak-proof sealing pad and the second leak-proof sealing pad is stated to be made of soft rubber material.

A kind of 4. structure of high sealing liquid flow control ball valve for being easy to connect according to claim 1, it is characterised in that institute State internal thread connection outlet and be oriented to fixation with being additionally provided with one on the circumference inner ring wall of flowing buffer chamber interconnection opening position Ring, inward-facing be threadedly coupled on the side side of outlet of ring body for being oriented to retainer ring are arranged to tilt cone structure.