CN209511171U - For eliminating the ball valve of spool gravity influence - Google Patents

Abstract

The utility model is suitable for valve technology field, it provides a kind of for eliminating the ball valve of spool gravity influence, the variable diameter of valve body, the valve rod of grafting valve body and the spool for connecting valve rod are connected including valve body, positioned at the intracorporal bracket of valve, by bracket, valve rod is equipped with several grooves, spool is located at valve inner, and spool matches with valve rod, and fixed device is equipped between spool and valve body, sealing element is equipped between bracket and variable diameter.Stem internal is equipped with tensioning device, and tensioning device includes compression bar and the positive stop strip for being flexibly connected compression bar, and there are two positive stop strip installations, and arc-shaped setting, positive stop strip one end is flexibly connected compression bar, and the other end has anti-skid chequer, and the end abutment spool with anti-skid chequer.Whereby, the utility model eliminates influence of the spool gravity to valve seal performance, eliminates the potential risk of leakage of valve, improves the safety of valve, so that sealing reliability improves.

Description

For eliminating the ball valve of spool gravity influence

Technical field

The utility model relates to valve technology field more particularly to a kind of ball valves influenced for eliminating spool gravity.

Background technique

Network Si Mu company development and production first polyethylene (PE) the valve in the 1970s, U.S. longs for the world, and largely answer With with polyethylene (PE) gas pipeline system.The 1990s mid-term, polyethylene (PE) gas pipeline is in the vast cities and towns in China It widely applies, people gradually recognize superiority of polyethylene (PE) valve in performance, in price, and gradually begin to use poly- Ethylene (PE) valve replaces metal valve.

Present polyethylene valve is since the advantage in service life and price starts to be increasingly used on drinking water pipeline, mesh It is preceding the problem is that, the spool quality in big size polyethylene valve is very big, not only to undertake so as to cause bracket sealing ring The function of sealing will also undertake the function of support spool weight.This results in sealing ring stress to increase, thus can be to valve seal Performance has an impact

In summary, the existing technology has inconveniences and defects in actual use, so it is necessary to be improved.

Utility model content

For above-mentioned defect, the purpose of this utility model is to provide a kind of for eliminating the ball of spool gravity influence Valve can eliminate the potential risk of leakage of valve, improve the safety of valve, so that sealing reliability improves.

To achieve the goals above, the utility model provides a kind of for eliminating the ball valve of spool gravity influence, including valve Body connects the variable diameter of valve body, the valve rod of grafting valve body and the spool for connecting valve rod, institute positioned at the intracorporal bracket of valve, by bracket Valve rod is stated equipped with several grooves, the spool is located at valve inner, and the spool matches with valve rod, the spool and Fixed device is installed between valve body, sealing element is installed between the bracket and variable diameter.The stem internal is filled equipped with tensioner It sets, and the tensioning device includes compression bar and the positive stop strip for being flexibly connected compression bar, there are two the positive stop strip installations, and is in arc Shape setting, described positive stop strip one end are flexibly connected compression bar, and the other end has anti-skid chequer, and the end abutment valve with anti-skid chequer Core.

It is according to the present utility model that for eliminating the ball valve of spool gravity influence, the bracket is symmetrically installed with two groups, and It is located between spool two sides and variable diameter, the sealing element is bracket sealing ring.

The ball valve according to the present utility model influenced for eliminating spool gravity, the fixed device include fixed pin and consolidate Rationed marketing bushing is equipped with spool gasket between the fixed pin bush(ing) and spool.

The ball valve according to the present utility model influenced for eliminating spool gravity, the valve body have section axially as circle Through-hole, the through-hole is step through-hole, and intermediate throughholes diameter is less than outside through-hole diameter, and the through-hole is axially in along valve body Center symmetric setting.

The ball valve according to the present utility model influenced for eliminating spool gravity, the intermediate throughholes and outer side through hole are coaxial The heart, and the intermediate throughholes and the outer side through hole transition step that is symmetrical set be plane and with through-hole axis perpendicular.

The ball valve according to the present utility model influenced for eliminating spool gravity, the valve body axial centre are opened radially upward There is band step through-hole, radially inner side band step through-hole diameter is big, and radial outside through-hole diameter is small.

The ball valve according to the present utility model influenced for eliminating spool gravity, the bracket axially inner side and outside are Plane, the inside and medial plane it is parallel to each other and with bracket axis perpendicular；In the bracket axially inner side plane and valve body Between through-hole and the outer side through hole transition portion step surface of the left and right sides axially engaged for plane.

The ball valve according to the present utility model influenced for eliminating spool gravity, the connector axially inner side end face of the variable diameter For plane, and the plane and the axially external plane axis of bracket are to cooperation.

The ball valve according to the present utility model influenced for eliminating spool gravity, the spool lower end is located at valve inner In blind hole, and spool lower end is fixed by fixed pin and fixed pin bush(ing), and the spool upper end is equipped with square hole, and the square hole with Valve rod lower end matches.

It is according to the present utility model that for eliminating the ball valve of spool gravity influence, the groove is valve stem seal ring recess, and The valve stem seal ring recess is equipped with three, is equipped with valve stem packing ring in the valve stem seal ring recess.

The utility model provide it is a kind of for eliminate spool gravity influence ball valve, including valve body, be located at valve it is intracorporal Bracket connects the variable diameter of valve body, the valve rod of grafting valve body and the spool for connecting valve rod by bracket, and the valve rod is equipped with several A groove, to enhance the airtightness between valve rod and valve body, guarantees valve worked by installing sealing ring in groove Integral sealing in journey improves the work quality of valve.The spool is located at valve inner, and the spool and valve rod phase Match, fixed device is installed between the spool and valve body, the position of spool is fixed using fixed device, enhances spool Stability during the work time, and then guarantee effective work of valve.Sealing element is installed, benefit between the bracket and variable diameter The gap between bracket and variable diameter is filled up with sealing element, while the position of bracket and variable diameter is stablized, makes spool Always it is able to maintain concentric with valve body, variable diameter, bracket and bracket sealing ring, the safety of valve is improved, so that sealing reliability It improves.The stem internal is equipped with tensioning device, and the tensioning device includes compression bar and the positive stop strip for being flexibly connected compression bar, institute It states there are two positive stop strip installations, and arc-shaped setting, described positive stop strip one end is flexibly connected compression bar, and the other end has anti-skidding Line, and the end abutment spool with anti-skid chequer, squeeze the connection of valve rod and spool using tensioning device, achieve Closed combination makes spool and valve rod realize synchronous rotary.Spool gravity is eliminated to valve the utility model has the beneficial effects that having The influence of door sealing performance eliminates so that spool is able to maintain concentric with valve body, variable diameter, bracket and bracket sealing ring always The potential risk of leakage of valve, improves the safety of valve, so that sealing reliability improves.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the longitudinal sectional view of valve body in the utility model；

Fig. 3 is the longitudinal sectional view of bracket in the utility model；

Fig. 4 is the longitudinal sectional view of variable diameter in the utility model；

Fig. 5 is the longitudinal sectional view of valve rod in the utility model；

Fig. 6 is the longitudinal sectional view of bracket sealing ring in the utility model；

Fig. 7 is the structural schematic diagram of pressing device in the utility model；

Fig. 8 is the working state structure schematic diagram of pressing device in the utility model；

A- valve body in the figure, A1, A2- valve body or so hold joint face；The intermediate inner hole step of A3, A4- valve body or so, A5- are blind Hole, A6- valve body upper end through-hole, A7- valve body upper end through-hole step, A8- valve body upper end through-hole internal diameter, B- bracket, outside B1- large end face Edge, B2- small end face internal diameter, B3- bracket sealing ring fixing groove, B4- large end face, B5- small end face, C- variable diameter, the connection of C1- big end Face, C2- fixed outer diameter, C3- reducing support sealing ring fixing groove, D- valve rod, D1- valve stem seal ring recess；It is fixed under D2- valve rod End；E- bracket sealing ring, E1- fixing groove, the bottom E2- fixing end, E3- protruding end, F- valve stem packing ring, G- spool, H- fixed pin, I- fixes pin bush(ing), J- spool gasket, K- compression bar, L- positive stop strip, M- block.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail, it should be understood that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

Referring to Fig. 1, the utility model provides a kind of for eliminating the ball valve of spool gravity influence, including valve A, is located at Bracket B in valve A, by the variable diameter C of bracket B connection valve A, the valve rod D of grafting valve A and the spool G of valve rod D is connected, The valve rod D is equipped with several grooves, by installing sealing ring in groove, to enhance close between valve rod D and valve A Closing property guarantees the Integral sealing of valve during the work time, improves the work quality of valve.The spool G is located in valve A Portion, and the spool G and valve rod D matches, and is equipped with fixed device between the spool G and valve body D, utilizes fixed device pair The position of spool G is fixed, the stability of enhancing spool G during the work time, and then guarantees effective work of valve.It is described Sealing element is installed between bracket B and variable diameter C, the gap between bracket B and variable diameter C is filled up using sealing element, simultaneously The position of bracket B and variable diameter C are stablized, are able to maintain spool G always and valve A, variable diameter C, bracket B and bracket sealing ring E's is concentric, improves the safety of valve, so that sealing reliability improves.Tensioning device is equipped with inside the valve rod D, and described Tensioning device includes the compression bar K and positive stop strip L for being flexibly connected compression bar K, and there are two the positive stop strip L installations, and arc-shaped is set It sets, the one end the positive stop strip L is flexibly connected compression bar K, and the other end has anti-skid chequer, and the end abutment spool G with anti-skid chequer, Valve rod D and the connection of spool G are squeezed using tensioning device, achieve closed combination, realizes spool G and valve rod D Synchronous rotary.

Preferably, the bracket B of the utility model is symmetrically installed with two groups, and be located at the two sides spool G and variable diameter C it Between, the sealing element is that bracket sealing ring E is defined the position of spool G by two pack support B being symmetrically installed, and is enhanced Its stability during the work time, while the gap between spool G and variable diameter C is filled up using sealing element, enhance close Airtightness between sealing and variable diameter C improves working efficiency and job stability.

In addition, the fixation device of the utility model includes fixed pin H and fixation pin bush(ing) I, the fixed pin bush(ing) I and valve Spool gasket J is installed between core G, the position of spool G is fixed using fixed pin bush(ing) I and fixed pin H, it is steady to enhance it It is qualitative, while spool gasket J is put between fixed pin bush(ing) I and spool G, spool gasket J inner hole and fixed pin bush(ing) I inner hole, Circular hole is placed with one heart under spool G outer circle, and insertion fixed pin H realizes fixed spool G into fixed pin bush(ing) I inner hole.

Further, the bracket B axle of the utility model is inwardly and outside is plane, and the inside and medial plane are mutual It is parallel and vertical with the bracket B axle heart；The outside of bracket the B axle inside side plane and valve A intermediate throughholes and the left and right sides Through-hole transition portion step surface axially engages for plane, and valve A transition portion step plane is for preventing bracket B axle to inwardly Direction is mobile.

Preferably, the connector axially inner side end face of the variable diameter C of the utility model is plane, and the plane and bracket B axle to Medial plane axially engages, and variable diameter C connector inner side end is for preventing bracket B axle to moving in outward direction.

The utility model is in implementation process: as figures 2-6, fixed pin bush(ing) I is fixed on bottom in valve A；Valve rod Valve A internal upper part is mounted on after D installation valve stem packing ring D1；Spool G is mounted in valve A, valve A both ends connect variable diameter C, two A bracket B is respectively arranged between the two sides spool G and variable diameter C, and bracket B and the contact position variable diameter C are equipped with bracket sealing ring E；Fixed pin H Valve A bottom is fixed on by fixed pin bush(ing) I；

Spool gasket J is put on fixed pin bush(ing) I by fixed pin H, and the bottom spool G is placed on spool gasket J.Fixed pin Bushing I outer diameter passed through tight fit and was fixed on inside the blind hole A5 of bottom lower end in valve A.Described tri- points of valve stem packing ring F It is not installed in valve rod D in valve stem seal ring recess D1；Then the valve rod D sub-assembly of 3 valve stem packing rings will be loaded onto out of valve A It is packed into the valve A upper end through-hole of diameter, is realized by through-hole A6 internal diameter cooperation in valve body upper end in 3 valve stem packing rings and valve body D Sealing.

The spool G is installed in valve A internal diameter, and spool G internal diameter and valve A internal diameter are coaxial, the square hole in spool G outer circle It is packed into the lower fixing end D2 in valve rod D；Circular hole is aligned with the blind hole A5 of valve A lower end under spool G outer circle, and spool gasket J is put Enter between fixed pin bush(ing) I and spool G, spool gasket J inner hole with circular hole is concentric under fixed pin bush(ing) I inner hole, spool G outer circle puts It sets, insertion fixed pin H realizes fixed spool G into fixed pin bush(ing) I inner hole.

The bracket sealing ring E and variable diameter C is assembled, bracket of the bottom fixing end E2 in bracket sealing ring E on variable diameter C On the fixing groove E1 of sealing ring E, then fixed outer diameter installation is entered on the small end face internal diameter B2 on bracket B and variable diameter C, realizes branch Bracket sealing ring fixing groove B3 on fixing groove E1 and bracket B on frame sealing ring E is fixed.

The group of the valve A, valve rod D, valve stem packing ring D1, spool G, fixed pin H, fixed pin bush(ing) I and spool gasket J Fit a set of and bracket B, variable diameter C, two sets of assembly of bracket sealing ring E, wherein a set of bracket B, variable diameter C, bracket sealing ring E Assembly butt fusion welding company is passed through by valve A on the big end joint face and valve A on variable diameter C or so end joint face It connects；Another set of bracket B, variable diameter C, bracket sealing ring E assembly pass through the valve on the big end joint face and valve A on variable diameter C Body A or so holds joint face to connect by butt fusion welding, to form complete polyethylene valve as shown in Figure 1.Described one Kind eliminates spool gravity and passes through rotary valve rod D to the polyethylene valve that sealing ring influences to the rotation with movable valve plug G, realizes Valve it is on and off.

The intermediate throughholes and outer side through hole are concentric, and the intermediate throughholes and the outer side through hole that is symmetrical set are excessive Part step be plane and with through-hole axis perpendicular.The valve A axial centre is provided with band step through-hole radially upward, and diameter is inside Side band step through-hole diameter is big, and radial outside through-hole diameter is small.The connector axially inner side end face of the variable diameter C is plane, and should Plane axially engages plane outward with bracket B axle.The lower end the spool G is located in the blind hole A5 inside valve A, and spool G Lower end is fixed by fixed pin H and fixed pin bush(ing) I, and the upper end the spool G is equipped with square hole, and the square hole and the lower end valve rod D Match, be coupled using square hole and the fixing end of the lower end valve rod D, guarantees that valve rod D can carry out the rotation of spool G Control guarantees working efficiency and work quality.The groove is valve stem seal ring recess D1, and the valve stem seal ring recess D1 is equipped with Three, valve stem packing ring is equipped in the valve stem seal ring recess D1, and three valve stem seal ring recess D1 is utilized to add valve stem seals Circle guarantees the closed combination of valve rod D and valve A, prevents occurring leakage phenomenon during the work time, improves close in the course of work Closing property.

As shown in Fig. 7~8, at work, contacted to enhance valve rod D with the effective of spool G, it can also be in valve rod D A tensioning device is installed in portion, using effective contact of tensioning device enhancing valve rod D and spool G, improves working efficiency.Rise in use When tight device, compression bar K is depressed, so that positive stop strip L is realized bending under the lower pressure of compression bar K, in the process of bending, due to positive stop strip L material is vulcanie and arc-shaped, reversed bending can be realized due to the own resilient of vulcanie, thus in the low of block M Under shelves, the one end positive stop strip L is exposed from the opening being located at below block M, to enable side of the positive stop strip L effectively to spool G Hole is contacted, and effective friction of spool G and valve rod D is enhanced, and improves rotation efficiency.

In conclusion the utility model provides a kind of for eliminating the ball valve of spool gravity influence, including valve body, it is located at The intracorporal bracket of valve, connected by bracket the variable diameter of valve body, grafting valve body valve rod and connect the spool of valve rod, on the valve rod Equipped with several grooves, by installing sealing ring in groove, to enhance the airtightness between valve rod and valve body, guarantee valve Integral sealing during the work time improves the work quality of valve.The spool is located at valve inner, and the spool with Valve rod matches, and fixed device is equipped between the spool and valve body, and the position of spool is fixed using fixed device, Enhance the stability of spool during the work time, and then guarantees effective work of valve.It is equipped between the bracket and variable diameter Sealing element fills up the gap between bracket and variable diameter using sealing element, while carrying out to the position of bracket and variable diameter steady It is fixed, it is able to maintain spool always concentric with valve body, variable diameter, bracket and bracket sealing ring, the safety of valve is improved, so that close Reliability is sealed to improve.The stem internal is equipped with tensioning device, and the tensioning device includes compression bar and flexible connection compression bar Positive stop strip, there are two the positive stop strip installations, and arc-shaped setting, described positive stop strip one end are flexibly connected compression bar, the other end With anti-skid chequer, and the end abutment spool with anti-skid chequer, the connection of valve rod and spool is squeezed using tensioning device, Closed combination is achieved, is that spool and valve rod realize synchronous rotary.Spool is eliminated the utility model has the beneficial effects that having Influence of the gravity to valve seal performance so that spool be able to maintain always it is same with valve body, variable diameter, bracket and bracket sealing ring The heart eliminates the potential risk of leakage of valve, improves the safety of valve, so that sealing reliability improves.

Certainly, the utility model can also have other various embodiments, without departing substantially from the spirit of the present invention and its essence In the case of, those skilled in the art work as can make various corresponding changes and modifications, but these according to the utility model Corresponding changes and modifications all should belong to the protection scope of the utility model the attached claims.

Claims (10)

1. a kind of for eliminating the ball valve of spool gravity influence, which is characterized in that including valve body, be located at the intracorporal bracket of valve, logical The variable diameter of bracket connection valve body, the valve rod of grafting valve body and the spool for connecting valve rod are crossed, the valve rod is equipped with several grooves, The spool is located at valve inner, and the spool matches with valve rod, and fixed device is equipped between the spool and valve body, Sealing element is installed between the bracket and variable diameter；

The stem internal is equipped with tensioning device, and the tensioning device includes compression bar and the positive stop strip for being flexibly connected compression bar, institute It states there are two positive stop strip installations, and arc-shaped setting, described positive stop strip one end is flexibly connected compression bar, and the other end has anti-skidding Line, and the end abutment spool with anti-skid chequer.

2. according to claim 1 for eliminating the ball valve of spool gravity influence, which is characterized in that the bracket is symmetrically pacified It equipped with two groups, and is located between spool two sides and variable diameter, the sealing element is bracket sealing ring.

3. according to claim 1 for eliminating the ball valve of spool gravity influence, which is characterized in that the fixed device packet Fixed pin and fixed pin bush(ing) are included, spool gasket is installed between the fixed pin bush(ing) and spool.

4. according to claim 1 for eliminating the ball valve of spool gravity influence, which is characterized in that the valve body axial zone Having section is circular through-hole, and the through-hole is step through-hole, and intermediate throughholes diameter is less than outside through-hole diameter, and the through-hole Axially be centrosymmetric setting along valve body.

5. it is according to claim 4 for eliminate spool gravity influence ball valve, which is characterized in that the intermediate throughholes with Outer side through hole is concentric, and the intermediate throughholes are plane and and through-hole with the outer side through hole transition step being symmetrical set Axis perpendicular.

6. according to claim 4 for eliminating the ball valve of spool gravity influence, which is characterized in that in the valve body axial direction The heart is provided with band step through-hole radially upward, and radially inner side band step through-hole diameter is big, and radial outside through-hole diameter is small.

7. according to claim 4 for eliminating the ball valve of spool gravity influence, which is characterized in that the support shaft is inside Side and outside are plane, the inside and medial plane it is parallel to each other and with bracket axis perpendicular；The bracket axially inner side Plane and the outer side through hole transition portion step surface of valve body intermediate throughholes and the left and right sides axially engage for plane.

8. according to claim 7 for eliminating the ball valve of spool gravity influence, which is characterized in that the connector of the variable diameter Axially inner side end face is plane, and the plane and the axially external plane axis of bracket are to cooperation.

9. according to claim 3 for eliminating the ball valve of spool gravity influence, which is characterized in that the spool lower end position In in the blind hole of valve inner, and spool lower end is fixed by fixed pin and fixed pin bush(ing), and the spool upper end is equipped with square hole, And the square hole matches with valve rod lower end.

10. according to claim 1 for eliminating the ball valve of spool gravity influence, which is characterized in that the groove is valve Bar seal groove, and the valve stem seal ring recess is equipped with three, is equipped with valve stem packing ring in the valve stem seal ring recess.