CN209229051U - A kind of valve stem spacing structure for ball valve - Google Patents
A kind of valve stem spacing structure for ball valve Download PDFInfo
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- CN209229051U CN209229051U CN201821910432.6U CN201821910432U CN209229051U CN 209229051 U CN209229051 U CN 209229051U CN 201821910432 U CN201821910432 U CN 201821910432U CN 209229051 U CN209229051 U CN 209229051U
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Abstract
A kind of valve stem spacing structure for ball valve, including valve body, valve body two sides have been respectively fixedly connected with connecting tube, body top center is vertically fixedly connected with the valve stem sleeve being connected with valve body, it is axially rotated in valve stem sleeve and is connected with valve rod, valve rod lower end is fixedly connected with positioned at the intracorporal sphere of valve, flow-guiding channel is offered in sphere, valve stem sleeve lower end is extend into valve body, valve stem sleeve bottom side of the wall offers V-notch, valve rod lower end side wall has been wholely set limited block corresponding with V-notch, limited block is located in V-notch, limited block two sides are set as bevel structure, the first sealing structure is provided between valve rod outer wall and valve stem sleeve inner wall, two connection tube ends extend into valve body and contact with sphere, second seals structure is respectively arranged between sphere two sides and two connecting tubes.The utility model structure is simple, the operation is stable, registration, good airproof performance, good limit effect.
Description
Technical field
The utility model belongs to valve technology field more particularly to a kind of valve stem spacing structure for ball valve.
Background technique
Currently, the limit of existing ball valve drills generally by valve rod, shop bolt is then squeezed into, by shop bolt
Cooperate with valve stem sleeve and realizes switch limit.Using the above structure, the position degree of pin hole, verticality, parallel when drilling on valve rod
Degree is not easy control, will appear switch position after finishing assembly so as to cause ball valve not just；In addition, due to being wanted to valve rod intensity
It asks so that the diameter of shop bolt can not be too big, will appear deformation after long-time service to influence the accuracy of switch limit, and
And the poor sealing effect of existing ball valve.
Utility model content
The utility model provides that a kind of structure is simple, the operation is stable, positioning to solve shortcoming in the prior art
Accurately, good airproof performance, good limit effect the valve stem spacing structure for ball valve.
In order to solve the above technical problems, the utility model adopts the following technical solution: a kind of valve stem spacing for ball valve
Structure, including valve body, valve body two sides have been respectively fixedly connected with connecting tube, and body top center is vertically fixedly connected with and valve body phase
The valve stem sleeve of connection axially rotates in valve stem sleeve and is connected with valve rod, and valve rod lower end is fixedly connected with positioned at the intracorporal sphere of valve,
Flow-guiding channel is offered in sphere, valve stem sleeve lower end is extend into valve body, and valve stem sleeve bottom side of the wall offers V-notch, valve rod
Lower end side wall has been wholely set limited block corresponding with V-notch, and limited block is located in V-notch, and limited block two sides are set
It is set to bevel structure, the first sealing structure is provided between valve rod outer wall and valve stem sleeve inner wall, two connection tube ends are extend into
It is contacted in valve body and with sphere, is respectively arranged with second seals structure between sphere two sides and two connecting tubes.
First sealing structure includes several the first seal grooves for being spaced and being provided with valve rod outer wall, each first seal groove
It is inside respectively arranged with the first O-ring seal, the first O-ring seal outer wall and the press of valve stem sleeve inner wall cooperate.
The second seals structure includes the sealing ring that connection inside pipe wall is arranged in, and sphere outer wall and sealing ring sliding connect
Connect, sealing ring outer wall offers the second seal groove, be provided with the second O-ring seal in the second seal groove, the second O-ring seal with
Inside pipe wall press cooperation is connected, connection inside pipe wall is provided with snap ring and washer positioned at sealing ring side, between snap ring and washer
It is provided with disc spring.
The valve rod outer wall is arranged with the axle sleeve above the first sealing structure, and axle sleeve outer wall and valve stem sleeve inner wall rotate
Connection.
The valve stem top outer wall is fixedly connected with handle, and valve stem tip is threaded with the locking screw for set lever
It is female.
Sealing cover is provided at the top of the valve stem sleeve.
By adopting the above technical scheme, the utility model has the advantages that
1, limited block moves the utility model valve rod in V-notch in the course of rotation, and limited block is moved to V-arrangement and lacks
It is respectively formed valve opening point at mouth two sidewalls and valve closes point, to realize the opening and closing of valve, limited block and V-arrangement
Notch side wall cooperatively forms detent by inclined-plane.
2, the utility model limited block and valve rod are structure as a whole, and valve rod is using a Milling Process molding, machining accuracy
Higher, integral strength is bigger, avoids since the caused positioning on the weak side of the process limitation and pin shaft intensity of drilling is inaccurate.
3, the utility model is provided with the first sealing structure between valve rod outer wall and valve stem sleeve inner wall, passes through each first
O-ring seals realize the sealing between valve rod and valve stem sleeve；It is close that second is respectively arranged between sphere two sides and two connecting tubes
Seal structure, snap ring form detent to sealing ring, and disc spring applies pressure to sealing ring to by snap ring, so that sealing ring is close to sphere
Side wall forms sealing, and the 2nd O V-shaped ring realizes sealing ring and connects the sealing between inside pipe wall.
4, valve rod outer wall is arranged with the axle sleeve above the first sealing structure, on the one hand forms sealing, on the other hand subtracts
The abrasion of small valve-rod during rotation；It is provided with sealing cover at the top of valve stem sleeve, forms the sealing at the top of valve stem sleeve.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the schematic view of the front view of valve rod in the utility model；
Fig. 3 is the present invention looks up structural representation of valve rod in the utility model；
Fig. 4 is the schematic view of the front view of valve stem sleeve in the utility model；
Fig. 5 is the present invention looks up structural representation of valve stem sleeve in the utility model；
Fig. 6 is the assembling structure schematic diagram of valve rod and valve stem sleeve in the utility model.
Specific embodiment
As shown in figures 1 to 6, a kind of valve stem spacing structure for ball valve of the utility model, including valve body 1,1 liang of valve body
Side has been respectively fixedly connected with connecting tube 2, and 1 top center of valve body is vertically fixedly connected with the valve stem sleeve 3 being connected with valve body 1, valve
It is axially rotated in rod set 3 and is connected with valve rod 4,4 lower end of valve rod is fixedly connected with the sphere 5 in valve body 1, opens in sphere 5
Equipped with flow-guiding channel 6,3 lower end of valve stem sleeve is extend into valve body 1, and 3 bottom side of the wall of valve stem sleeve offers V-notch 7, under valve rod 4
End sidewalls have been wholely set limited block 8 corresponding with V-notch 7, and limited block 8 is located in V-notch 7,8 two sides of limited block
Be set as bevel structure, 8 two sides of limited block have been respectively fixedly connected with plush copper, 7 two sidewalls of V-notch offer respectively it is corresponding with
The card slot that plush copper is engaged by clamping, 7 two sidewalls of V-notch are equipped with wearing layer respectively, between 3 inner wall of 4 outer wall of valve rod and valve stem sleeve
Be provided with the first sealing structure, two 2 ends of connecting tube extend into valve body 1 and contact with sphere 5,5 two sides of sphere with two
Second seals structure is respectively arranged between connecting tube 2.Plush copper, card slot and wearing layer is not shown in the figure.
First sealing structure includes several the first seal grooves for being spaced and being provided with 4 outer wall of valve rod, each first sealing
The first O-ring seal 9 is respectively arranged in slot, 9 outer wall of the first O-ring seal and the press of 3 inner wall of valve stem sleeve cooperate.
The second seals structure includes the sealing ring 10 that 2 inner wall of connecting tube is arranged in, and 5 outer wall of sphere and sealing ring 10 are sliding
Dynamic connection, 10 outer wall of sealing ring offer the second seal groove, the second O-ring seal 11 are provided in the second seal groove, second is O-shaped
Sealing ring 11 and the press of 2 inner wall of connecting tube cooperate, and 2 inner wall of connecting tube is provided with snap ring 12 and washer positioned at 10 side of sealing ring
13, disc spring 14 is provided between snap ring 12 and washer 13.
4 outer wall of valve rod is arranged with the axle sleeve 15 above the first sealing structure, in 15 outer wall of axle sleeve and valve stem sleeve 3
Wall rotation connection.
4 top exterior walls of valve rod are fixedly connected with handle 16, and 4 top of valve rod is threaded with for set lever 16
Locking nut 17.
Sealing cover 18 is provided at the top of the valve stem sleeve 3.
The utility model in use, passing through rotational handle 16 rotates that sphere 5 is driven to rotate with ovable valve stem 4 in work,
Limited block 8 moves valve rod 4 in V-notch 7 in the course of rotation, and limited block 8, which is moved at 7 two sidewalls of V-notch, to be distinguished
It forms valve opening point and valve closes point, to realize the opening and closing of valve, limited block 8 passes through with 7 side wall of V-notch
Inclined-plane cooperatively forms detent, and 8 two sides of limited block have been respectively fixedly connected with plush copper, and 7 two sidewalls of V-notch offer correspondence respectively
The card slot being engaged by clamping with plush copper, so that the detent of limited block 8 and V-notch 7 is more firm；The utility model is outside valve rod 4
It is provided with the first sealing structure between 3 inner wall of wall and valve stem sleeve, realizes valve rod 4 and valve stem sleeve 3 by each first O-ring seals
Between sealing；Second seals structure is respectively arranged between 5 two sides of sphere and two connecting tubes 2, snap ring 12 is to sealing ring 10
Formed detent, disc spring 14 to by snap ring 12 to sealing ring 10 apply pressure so that sealing ring 10 be close to 5 side wall of sphere formed it is close
Envelope, the 2nd O V-shaped ring 10 realize the sealing between sealing ring 10 and 2 inner wall of connecting tube；4 outer wall of valve rod is arranged with positioned at first
Axle sleeve 15 above sealing structure, on the one hand forms sealing, on the other hand reduces the abrasion of valve rod 4 during rotation；Valve rod
3 top of set is provided with sealing cover 18, forms the sealing at 3 top of valve stem sleeve.
The present embodiment not makes any form of restriction the shape of the utility model, material, structure etc., all foundations
The technical essence of the utility model any simple modification, equivalent change and modification to the above embodiments, belong to this reality
With the protection scope of new technique scheme.
Claims (6)
1. a kind of valve stem spacing structure for ball valve, including valve body, valve body two sides have been respectively fixedly connected with connecting tube, valve body top
Portion center is vertically fixedly connected with the valve stem sleeve being connected with valve body, axially rotates in valve stem sleeve and is connected with valve rod, under valve rod
End, which is fixedly connected with, offers flow-guiding channel in the intracorporal sphere of valve, sphere, it is characterised in that: valve stem sleeve lower end is extend into
In valve body, valve stem sleeve bottom side of the wall offers V-notch, and valve rod lower end side wall has been wholely set corresponding with V-notch
Limited block, limited block are located in V-notch, and limited block two sides are set as bevel structure, between valve rod outer wall and valve stem sleeve inner wall
It is provided with the first sealing structure, two connection tube ends extend into valve body and contact with sphere, and sphere two sides are connect with two
Second seals structure is respectively arranged between pipe.
2. the valve stem spacing structure according to claim 1 for ball valve, it is characterised in that: the first sealing structure packet
Several the first seal grooves for being spaced and being provided with valve rod outer wall are included, are respectively arranged with the first O-ring seal in each first seal groove,
First O-ring seal outer wall and the press of valve stem sleeve inner wall cooperate.
3. the valve stem spacing structure according to claim 2 for ball valve, it is characterised in that: the second seals structure packet
The sealing ring that connection inside pipe wall is set is included, sphere outer wall is slidably connected with sealing ring, and sealing ring outer wall offers the second sealing
Slot is provided with the second O-ring seal in the second seal groove, and the second O-ring seal cooperates with inside pipe wall press is connect, in connecting tube
Wall is provided with snap ring and washer positioned at sealing ring side, and disc spring is provided between snap ring and washer.
4. the valve stem spacing structure according to claim 3 for ball valve, it is characterised in that: the valve rod outer wall is arranged with
Axle sleeve above the first sealing structure, axle sleeve outer wall and valve stem sleeve inner wall are rotatablely connected.
5. the valve stem spacing structure according to claim 4 for ball valve, it is characterised in that: the valve stem top outer wall is solid
Surely it is connected with handle, valve stem tip is threaded with the locking nut for set lever.
6. the valve stem spacing structure according to claim 5 for ball valve, it is characterised in that: setting at the top of the valve stem sleeve
There is sealing cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821910432.6U CN209229051U (en) | 2018-11-20 | 2018-11-20 | A kind of valve stem spacing structure for ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821910432.6U CN209229051U (en) | 2018-11-20 | 2018-11-20 | A kind of valve stem spacing structure for ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209229051U true CN209229051U (en) | 2019-08-09 |
Family
ID=67503651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821910432.6U Active CN209229051U (en) | 2018-11-20 | 2018-11-20 | A kind of valve stem spacing structure for ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209229051U (en) |
-
2018
- 2018-11-20 CN CN201821910432.6U patent/CN209229051U/en active Active
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