CN213711948U

CN213711948U - Valve seat limiting device for ball valve

Info

Publication number: CN213711948U
Application number: CN202022468900.2U
Authority: CN
Inventors: 王奕麟; 王久英
Original assignee: HARBIN ZHONGTONG VALVE FACTORY
Current assignee: HARBIN ZHONGTONG VALVE FACTORY
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-07-16
Anticipated expiration: 2030-10-30

Abstract

A valve seat limiting device for a ball valve. At present, valves on pipelines for water, oil, gas and the like only adopt a simple valve seat to realize the closing function of the pipeline, the valve seat is deformed and crumpled due to the pressure difference between an inner cavity and an outer cavity when the pipeline is closed, the valve seat loses the function after a long time, and the leakage of water, oil and gas is caused because the valve seat cannot be well done in serious cases. A valve seat limiting device for a ball valve, comprising: the ball valve comprises a left valve body (1), a right valve body (2), valve seats (3) and a limiting blocking ring (4), wherein the limiting blocking ring is installed on the outer side of a ball body, the two valve seats are installed in annular clamping grooves of the left valve body and the right valve body respectively, threaded grooves (5) are formed in the outer sides of the annular clamping grooves, the threaded grooves are screwed with threaded sleeves (4-1) of the limiting blocking ring, the threaded sleeves are connected with annular baffles (4-2), and the annular baffles and the threaded sleeves are of an integrated structure. The utility model is applied to the valve field.

Description

Valve seat limiting device for ball valve

Technical Field

The utility model relates to a disk seat stop device for ball valve.

Background

The ball valve is a valve which is driven by a valve rod and rotates around the axis of the ball valve. And can also be used for regulating and controlling the fluid. At present, valves on pipelines for water, oil, gas and the like only adopt a simple valve seat to realize the closing effect of the pipeline, the valve seat is deformed and crumpled due to the effect of pressure difference between an inner cavity and an outer cavity when the pipeline is closed, the valve seat loses the effect after a long time, and the leakage of water, oil and gas is caused to be bad in serious cases, even the life health is influenced. In order to solve the existing problem, the inner and outer protective sleeves are arranged on the inner and outer sides of the valve seat in the matching shape between the valve seats, and the inner and outer protective sleeves are connected through threads, so that the valve cannot deform under the action of the protective sleeve due to external pressure, the service life of the valve seat is prolonged, the inner and outer protective sleeves and the valve seat need to be matched technically by adopting the structure, the required precision is high, the production process is complex, the internal structure of the valve body needs to be changed, and the cost is increased.

Disclosure of Invention

The utility model aims at providing a disk seat stop device for ball valve.

The above purpose is realized by the following technical scheme:

a valve seat limiting device for a ball valve, comprising: left valve body, right valve body, disk seat and spacing fender ring, spacing fender ring install in the spheroid outside, two the disk seat install respectively in the ring groove of left valve body and right valve body, seted up the thread groove in ring groove's the outside, the thread groove close with the thread bush of spacing fender ring soon, the thread bush be connected with ring baffle, ring baffle with the thread bush structure as an organic whole.

The valve seat limiting device for the ball valve is characterized in that a sealing ring is arranged between the valve seat and the limiting baffle ring.

The valve seat limiting device for the ball valve is characterized in that the annular baffle plate on the limiting baffle ring is provided with at least two process holes.

The utility model has the advantages that:

1. the utility model arranges the inner and outer protective sleeves at the inner and outer sides of the valve seat according to the matching shape between the ball body and the valve seat, and the inner and outer protective sleeves are connected by screw threads, so that the valve can not deform under the action of the protective sleeve due to the external pressure, the service life of the valve seat is prolonged, and the life and health are guaranteed; simultaneously the utility model discloses simple structure, the low price is the pipeline valve of new generation.

The utility model discloses install the sealing washer between valve body and spacing fender ring, increased the leakproofness between disk seat and the valve body, it has the fabrication hole to process simultaneously on the ring baffle of spacing fender ring, can make things convenient for limit baffle to take out from the thread groove.

The utility model has the characteristics of simple structure, convenient operation, the production and processing of being convenient for, low in production cost etc, increased the disk seat life of ball valve.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 is a schematic structural view of the limit stop ring.

Fig. 4 is a sectional view a-a of fig. 3.

In the figure: 1. the valve comprises a left valve body, 2 a right valve body, 3 a valve seat, 4 a limiting baffle ring, 4-1 a threaded sleeve, 4-2 an annular baffle plate, 5 a threaded groove, 6 a sealing ring, 7 a fabrication hole, 8 and a ball body.

The specific implementation mode is as follows:

example 1:

a valve seat limiting device for a ball valve, comprising: the ball valve comprises a left valve body 1, a right valve body 2, a valve seat 3 and a limiting blocking ring 4, wherein the limiting blocking ring is installed on the outer side of a ball body, the two valve seats are respectively installed in annular clamping grooves of the left valve body and the right valve body, a thread groove 5 is formed in the outer side of the annular clamping grooves, the thread groove is screwed with a thread sleeve 4-1 of the limiting blocking ring, the thread sleeve is connected with an annular baffle plate 4-2, and the annular baffle plate and the thread sleeve are of an integrated structure.

Example 2:

according to the valve seat limiting device for the ball valve in embodiment 1, a sealing ring 6 is arranged between the valve seat and the limiting baffle ring.

Example 3:

according to the valve seat limiting device for the ball valve in the embodiment 1 or 2, the annular baffle plate on the limiting baffle ring is provided with at least two process holes 7.

Claims

1. A valve seat limiting device for a ball valve, comprising: left valve body, right valve body, disk seat and spacing fender ring, characterized by: the limiting baffle ring is arranged on the outer side of the ball body, the two valve seats are respectively arranged in the annular clamping grooves of the left valve body and the right valve body, threaded grooves are formed in the outer sides of the annular clamping grooves, the threaded grooves are screwed with the threaded sleeves of the limiting baffle ring, the threaded sleeves are connected with the annular baffle plate, and the annular baffle plate and the threaded sleeves are of an integral structure.

2. A seat retainer for a ball valve as defined in claim 1, wherein: and a sealing ring is arranged between the valve seat and the limit baffle ring.

3. A seat retainer for a ball valve as defined in claim 1, wherein: at least two fabrication holes are arranged on the annular baffle plate on the limit baffle ring.