CN201909059U - Fixed ball valve - Google Patents

Fixed ball valve Download PDF

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Publication number
CN201909059U
CN201909059U CN2010206668771U CN201020666877U CN201909059U CN 201909059 U CN201909059 U CN 201909059U CN 2010206668771 U CN2010206668771 U CN 2010206668771U CN 201020666877 U CN201020666877 U CN 201020666877U CN 201909059 U CN201909059 U CN 201909059U
Authority
CN
China
Prior art keywords
valve
ball
valve seat
screw
groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010206668771U
Other languages
Chinese (zh)
Inventor
孟庆银
张建华
尤广泉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANTONG POWER STATION VALVE CO Ltd
Original Assignee
NANTONG POWER STATION VALVE CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NANTONG POWER STATION VALVE CO Ltd filed Critical NANTONG POWER STATION VALVE CO Ltd
Priority to CN2010206668771U priority Critical patent/CN201909059U/en
Application granted granted Critical
Publication of CN201909059U publication Critical patent/CN201909059U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a fixed ball valve, and relates to the technical field of a valve. The fixed ball valve comprises a valve body, wherein the left side and the right side of the valve body are respectively connected with a valve cover, each valve cover is internally and respectively provided with a valve seat, a valve ball is arranged between the two valve seats, and the surface of the valve ball which is opposite to the two valve seats is respectively provided with two inclined surfaces which are matched with each other; each valve cover is axially provided with a valve cover groove, each valve cover groove is internally provided with a spring, the outer surface of the valve seat is radially provided with the valve seat groove, each valve cover is radially provided with a screw nail hole and a screw thread hole, one end of the screw nail hole is communicated with the valve seat groove, the other end of the screw nail hole is connected with the screw thread hole, and the screw nail hole is arranged at one side of the valve seat groove which is far away from the valve ball; and the screw nail hole is in internally threaded connection with the screw nail, and the free end of the screw nail is tapered; and the fixed ball valve further comprises two drain plugs which are matched with the screw thread holes. By adopting the screw nail, the fixed ball valve offsets the medium pressure and the spring elasticity, so that the friction turning on (turning off) is unavailable between the valve ball and the valve seat, the abrasion between the valve ball and the valve seat is reduced, and the sealing property is improved.

Description

A kind of fixing ball valve
Technical field
The utility model relates to the technical field of valve.
Background technique
Fixing ball valve is mainly used in every field such as oil, chemical industry, iron and steel, metallurgy and electric power, and with respect to the valve of other controlling plumbing fixtures medium circulations, fixing ball valve has advantages such as resistance of medium is little, easy to operate.The basic structure of existing fixing ball valve is valve body, valve gap, place the valve ball between valve body and the valve gap, and the valve seat that between valve gap and valve ball, is provided with, under the state of valve closing, form sealing surface between valve seat and the ball valve, and between valve seat and valve gap, also be provided with Regulation spring, its effect mainly is the relative movement that is used between regulating valve seat and the valve ball, to guarantee the normal switch of valve.
And we know, the sealing material of traditional valve seat construction mostly adopts harder material, and are the entrance point sealings, and harder sealing material needs sealing surface that higher seal pressure will be arranged, and moment of torsion must increase like this.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiencies in the prior art, a kind of fixing ball valve that reduces moment of torsion, reduces wear to be provided.
The purpose of this utility model is achieved in that a kind of fixing ball valve, comprise valve body, the left and right sides of valve body connects valve gap respectively, valve seat is set respectively in each valve gap, a valve ball is set between two valve seats, valve ball is arranged in the described valve body, on the valve ball face relative with two valve seats the inclined-plane that cooperatively interacts is set respectively; The valve gap groove axially is set on the described valve gap, in the valve gap groove spring is set, one end conflict valve gap of spring, the other end conflict valve seat of spring, the outer surface of described valve seat radially is provided with the valve seat groove, and screw hole and tapped hole radially are set on the described valve gap, and an end of screw hole is connected with the valve seat groove, the other end of screw hole links to each other with tapped hole, and screw hole is arranged on the side of valve seat groove away from valve ball; Described screw hole internal thread attachment screw, the free end of screw is taper; Described fixing ball valve also comprises two plugs that can cooperate with described tapped hole.
Before screw and valve seat effect, metal seat valve closely contacts with valve ball, fluid pressure and spring force all act on the valve ball, and after screw is pressed in the valve seat groove, screw is born pressure medium and spring force, and the valve seat on the right moves right, the valve seat on the left side is moved to the left, thereby make between valve ball and the valve seat micro-gap is arranged, open (closing) valve this moment, avoided the friction between valve seat and the valve ball, and moment is unloaded moment of torsion, and reduced the wearing and tearing of valve ball and sealing surface of seat, made sealability more reliable.And behind valve opening (closing), screw can be screwed out, valve seat is contacted once more with valve ball, make it form sealing once more.Again the screw taking-up is blocked screw hole with plug screw-in tapped hole after forming sealing.
The utility model adopts screw to offset pressure medium and spring force, and making does not have friction and open (closing) and reduced moment of torsion between valve ball and the metal seat valve, has reduced the wearing and tearing between valve ball and the metal seat valve, has improved sealability.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is an A portion enlarged view among Fig. 1.
Fig. 3 is the partial schematic diagram of screw after screwing in.
Among the figure, 1 valve body, 2 first Expanded graphites, 3 first O-ring seals, 4 valve gaps, 4-1 screw hole, 4-2 valve gap groove, 5 valve seats, 5-1 valve seat groove, 6 valve balls, 7 second O-ring seals, 8 the 3rd O-ring seals, 9 second Expanded graphites, 10 fire-protection rings, 11 springs, 12 plugs, 13 screws.
Embodiment
As shown in Figure 1, 2, 3, be a kind of fixing ball valve, comprise valve body 1, the left and right sides of valve body 1 connects valve gap 4 respectively, and first Expanded graphite 2 and first O-ring seals 3 are set between valve body 1 and each valve gap 4.Be provided with respectively in each valve gap 4 between 5, two valve seats 5 of valve seat a valve ball 6 is set, valve ball 6 is arranged in the valve body 1, on the relative face of valve ball 6 and two valve seats 5 inclined-plane that cooperatively interacts is set respectively.Second O-ring seals 7, the 3rd O-ring seals 8, second Expanded graphite 9 and fire-protection ring 10 are set between valve gap 4 and the valve seat 5.Valve gap groove 4-2 axially is set on the valve gap 4, in the valve gap groove 4-2 spring 11 is set, an end conflict valve gap 4 of spring 11, the other end conflict fire-protection ring 10 of spring 11.The outer surface of valve seat 5 radially is provided with valve seat groove 5-1, screw hole 4-1 and tapped hole 4-3 radially are set on the valve gap 4, the end of screw hole 4-1 is connected with valve seat groove 5-1, and the other end of screw hole 4-1 links to each other with tapped hole 4-3, and screw hole 4-1 is arranged on the side of valve seat groove 5-1 away from valve ball 6.Screw hole 4-1 internal thread attachment screw 13, the free end of screw 13 is taper.Fixing ball valve also comprises two plugs 12 that can cooperate with tapped hole 4-3.
Below disclose the utility model with preferred embodiment, so it is not in order to restriction the utility model, and all employings are equal to replaces or technological scheme that the equivalent transformation mode is obtained, all drops within the protection domain of the present utility model.

Claims (1)

1. a fixing ball valve comprises valve body, and the left and right sides of valve body connects valve gap respectively, valve seat is set respectively in each valve gap, a valve ball is set between two valve seats, and valve ball is arranged in the described valve body, on the valve ball face relative with two valve seats the inclined-plane that cooperatively interacts is set respectively; The valve gap groove axially is set on the described valve gap, in the valve gap groove spring is set, one end conflict valve gap of spring, the other end conflict valve seat of spring, it is characterized in that: the outer surface of described valve seat radially is provided with the valve seat groove, and screw hole and tapped hole radially are set on the described valve gap, and an end of screw hole is connected with the valve seat groove, the other end of screw hole links to each other with tapped hole, and screw hole is arranged on the side of valve seat groove away from valve ball; Described screw hole internal thread attachment screw, the free end of screw is taper; Described fixing ball valve also comprises two plugs that can cooperate with described tapped hole.
CN2010206668771U 2010-12-20 2010-12-20 Fixed ball valve Expired - Fee Related CN201909059U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206668771U CN201909059U (en) 2010-12-20 2010-12-20 Fixed ball valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206668771U CN201909059U (en) 2010-12-20 2010-12-20 Fixed ball valve

Publications (1)

Publication Number Publication Date
CN201909059U true CN201909059U (en) 2011-07-27

Family

ID=44301260

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010206668771U Expired - Fee Related CN201909059U (en) 2010-12-20 2010-12-20 Fixed ball valve

Country Status (1)

Country Link
CN (1) CN201909059U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102878315A (en) * 2012-10-23 2013-01-16 浙江超达阀门股份有限公司 Ball valve with zero friction between valve seat and ball
CN105402436A (en) * 2015-12-31 2016-03-16 上海高中压阀门股份有限公司 Large-diameter bolted connection ball valve
CN111577920A (en) * 2020-04-30 2020-08-25 方正阀门集团股份有限公司 High-temperature hard-sealing fixed ball valve
CN111577930A (en) * 2020-04-30 2020-08-25 方正阀门集团股份有限公司 Switch sealing surface separation ball valve
CN111981154A (en) * 2020-07-08 2020-11-24 浙江福瑞科流控机械有限公司 Valve structure capable of realizing forced double-closing zero friction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102878315A (en) * 2012-10-23 2013-01-16 浙江超达阀门股份有限公司 Ball valve with zero friction between valve seat and ball
CN105402436A (en) * 2015-12-31 2016-03-16 上海高中压阀门股份有限公司 Large-diameter bolted connection ball valve
CN111577920A (en) * 2020-04-30 2020-08-25 方正阀门集团股份有限公司 High-temperature hard-sealing fixed ball valve
CN111577930A (en) * 2020-04-30 2020-08-25 方正阀门集团股份有限公司 Switch sealing surface separation ball valve
CN111981154A (en) * 2020-07-08 2020-11-24 浙江福瑞科流控机械有限公司 Valve structure capable of realizing forced double-closing zero friction

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110727

Termination date: 20141220

EXPY Termination of patent right or utility model