CN214534597U - High-sealing type fixed ball valve - Google Patents
High-sealing type fixed ball valve Download PDFInfo
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- CN214534597U CN214534597U CN202120171125.6U CN202120171125U CN214534597U CN 214534597 U CN214534597 U CN 214534597U CN 202120171125 U CN202120171125 U CN 202120171125U CN 214534597 U CN214534597 U CN 214534597U
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Abstract
The utility model relates to a fixed ball valve of high canned type, including valve body, valve rod and spheroid, the one end that the valve body corresponds the valve rod is equipped with the valve rod seat of being connected with the spheroid after supplying the valve rod to insert the valve body, be equipped with limit stop in the valve rod seat, there is the packing chamber that supplies the packing to fill between valve rod and the valve rod seat, the cover is equipped with the gland that is used for impressing the packing into the packing chamber with the packing on the valve rod, its characterized in that: be equipped with first sealing mechanism between valve rod and the limit stop, first sealing mechanism is including setting up the arc lug that corresponds spheroid one end at the valve rod and setting up the first sealing washer between limit stop and the arc lug, the external diameter of arc lug is greater than limit stop's internal diameter, first sealing washer is equipped with the arc ball bowl with arc lug outer peripheral face looks adaptation towards arc lug one end, first sealing washer one end offsets with limit stop, and the other end passes through arc ball bowl and arc lug interference connection.
Description
Technical Field
The utility model relates to a fluid control's valve field, in particular to fixed ball valve of high canned type.
Background
The ball valve is a valve which is driven by a valve rod through a starting and closing part (a ball body) and rotates by 90 degrees around the axis of the valve rod, and is mainly used for regulating and controlling fluid. Since birth, ball valves have been widely used in petroleum refining, long-distance pipelines, chemical industry, paper making, pharmacy, water conservancy, electric power, municipal administration, steel industry and other industries, and belong to indispensable parts in the mechanical field.
In the prior art, ball valves can be divided into floating ball valves and fixed ball valves. Compared with a floating ball valve, the fixed ball valve has the advantages that the ball body does not float, and the valve seat can move. During operation, the fluid pressure in front of the valve is
The acting force generated on the ball body is completely transmitted to the valve rod and the fixed shaft, and the ball body cannot move towards the valve seat, so that the valve seat cannot bear overlarge pressure, the fixed ball valve is small in torque, small in deformation of the valve seat, stable in sealing performance and long in service life, and is suitable for high-pressure and large-caliber occasions.
The existing ball valve has the following defects in the actual use process:
1. when the fixed ball valve is assembled, the valve rod needs to be inserted into the valve rod seat and then connected with the ball body, so a gap is reserved between the valve core and the valve rod seat, in order to prevent fluid from flowing upwards from the valve rod seat, filler is usually added into the gap, then the sealing ring is placed at the connecting end of the valve rod and the ball body to seal the valve rod and the ball body, but the valve rod and the sealing ring which are caused by the sealing mode are required to be tightly jointed to effectively seal the lower end of the gap, so that the efficiency of installing the valve rod at each time is low, and the sealing effect still has defects.
2. The valve rod and the valve rod seat of the fixed ball valve are sealed through rubber packing, the rubber material can be fatigue-aged at high temperature and high pressure, the valve must be opened when the packing is replaced every time, the valve rod is detached and replaced, the operation is very inconvenient, and a fluid pipeline must be temporarily sealed, so that the normal use is stopped.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the not enough to above-mentioned prior art is directed against, the utility model provides a high canned type fixed ball valve, this fixed ball valve is through the sealed limit stop lower extreme of first sealing mechanism, make elastic sealing element further strengthen sealed effect through the elastic force after the seal packing is ageing through second sealing mechanism, through third sealing mechanism, make the fluid can not enter into the spheroid top by the separation of second sealing washer, simultaneously through setting up sealed regulation hole on the gland, make the user can be under the condition that need not dismantle any part when daily maintenance, just can adjust the relative position of gland on the valve rod through sealed regulation hole, and then adjust the leakproofness of seal packing and reduce the change maintenance frequency, avoid shutting down the loss that the water that stops to cause.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a double sealing's fixed ball valve, includes valve body, valve rod and spheroid, the one end that the valve body corresponds the valve rod is equipped with the valve rod seat of being connected with the spheroid after supplying the valve rod to insert the valve body, be equipped with limit stop in the valve rod seat, there is the packing chamber that supplies to seal the packing to fill between valve rod and the valve rod seat, the cover is equipped with the gland that is used for impressing seal packing in the packing chamber on the valve rod, its characterized in that: be equipped with first sealing mechanism between valve rod and the limit stop, first sealing mechanism is including setting up the arc lug that corresponds spheroid one end at the valve rod and setting up the first sealing washer between limit stop and the arc lug, the external diameter of arc lug is greater than limit stop's internal diameter, first sealing washer is equipped with the arc ball bowl with arc lug outer peripheral face looks adaptation towards arc lug one end, first sealing washer one end offsets with limit stop, and the other end passes through arc ball bowl and arc lug interference connection.
By adopting the technical scheme, the limit stop matched with the thickness of the valve rod is arranged in the valve rod seat, so that the part of the valve rod connected with the ball body is not drawn out of the valve rod seat in the use process, the valve rod seat is divided into a packing cavity for accommodating the sealing packing by the limit stop for ensuring the sealing effect, and a first sealing mechanism for placing a first sealing ring is arranged, because the outer diameter of the arc-shaped lug is larger than the inner diameter of the limit stop, when the ball valve is assembled, the valve rod penetrates through the outside of the valve body outside the inner cavity of the valve body, the first sealing ring is arranged on the connecting surface of the valve rod and the limit stop, the arc-shaped ball bowl in the first sealing ring can be mutually matched with the arc-shaped lug on the valve rod, namely, one end of the arc-shaped lug on the valve rod, which faces the limit stop, is of a spherical structure with a width which is narrowed, and the inner diameter of the arc-shaped ball bowl can be gradually reduced along with the arc-shaped lug, and the connection interference refers to the valve rod locking process, the valve rod can be pulled towards one end of the limit stop by the locking force of the packing gland, the gap between the first sealing ring and the arc-shaped convex block is gradually reduced, the sealing effect is realized, and the fluid is prevented from leaking outwards from the valve rod seat.
The double-sealing fixed ball valve can be further configured as follows: and a second sealing mechanism is further arranged between the sealing filler and the filler gland and comprises an elastic sealing element sleeved on the peripheral surface of the valve rod, one end of the elastic sealing element abuts against the sealing filler, and the other end of the elastic sealing element abuts against the filler gland.
By adopting the technical scheme, the elastic sealing element is arranged between the sealing filler and the filler gland, so that the sealing filler can be pushed to be sealed by the elastic force of the elastic sealing element through the elastic force of the elastic sealing element if gaps are generated during daily aging, and the sealing effect is further improved.
The double-sealing fixed ball valve can be further configured as follows: the packing gland is in threaded connection with the valve rod, a plurality of sealing adjusting holes are formed in the peripheral surface of the packing gland, and the packing gland axially rotates on the valve rod by poking the sealing adjusting holes.
Adopt above-mentioned technical scheme, because seal through the sealing filler of rubber material between the valve rod of ball valve and the valve rod seat, rubber materials can be fatigue aging under high temperature high pressure, change the filler at every turn and all must open the valve, change after lifting off the valve rod, it is very inconvenient to operate, and must temporarily seal the fluid pipeline, lead to the suspend of normal use, through seting up sealed regulation hole at the gland periphery, make the user can be under the condition that need not dismantle any part when daily maintenance, just can adjust the relative position of gland on the valve rod through inserting the regulation pole to sealed regulation hole, and then adjust the leakproofness of sealing filler and reduce the change maintenance frequency, avoid shutting down the loss that the water caused.
The double-sealing fixed ball valve can be further configured as follows: the valve body comprises a left valve body and a right valve body, a third sealing mechanism is arranged between the ball body and the left and right valve bodies, and the third sealing mechanism comprises a second sealing ring which is arranged at one end of the left and right valve bodies corresponding to the ball body.
By adopting the technical scheme, the second sealing ring is arranged between the ball body and the left and right valve bodies, so that fluid can not flow into the ball body from the flow channel of the valve body, and the sealing performance of the valve body is improved.
The present invention will be further described with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention.
Fig. 2 is a cross-sectional view of an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the first sealing mechanism and the second sealing mechanism according to the embodiment of the present invention.
Fig. 4 is a schematic perspective view of a packing gland according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1-4, a double-sealed fixed ball valve includes a valve body 1, a valve rod 2 and a ball body 3, wherein a valve rod seat 4 is provided at an end of the valve body 1 corresponding to the valve rod 2, the valve rod seat 4 is used for connecting the valve rod 2 with the ball body 3 after being inserted into the valve body 1, a limit stop 41 is provided in the valve rod seat 4, a packing cavity for packing the packing 5 is provided between the valve rod 2 and the valve rod seat 4, a packing gland 6 for pressing the packing 5 into the packing cavity is sleeved on the valve rod 2, a first sealing mechanism is provided between the valve rod 2 and the limit stop 41, the first sealing mechanism includes an arc-shaped projection 21 provided at an end of the valve rod 2 corresponding to the ball body 3 and a first sealing ring 7 provided between the limit stop 41 and the arc-shaped projection 21, an outer diameter of the arc-shaped projection 21 is larger than an inner diameter of the limit stop 41, an arc-shaped ball bowl 71 adapted to an outer peripheral surface of the arc-shaped projection 21 is provided at an end of the first sealing ring 7 facing the arc-shaped projection 21, one end of the first sealing ring 7 is abutted against the limit stop 41, the other end is in interference connection with the arc-shaped convex block 21 through the arc-shaped ball bowl 71, a second sealing mechanism is arranged between the sealing packing 5 and the packing gland 6, the second sealing mechanism comprises an elastic sealing element 8 sleeved on the peripheral surface of the valve rod 2, one end of the elastic sealing element 8 is propped against the sealing packing 5, the other end is propped against the packing gland 6, the packing gland 6 is in threaded connection with the valve rod 2, the peripheral surface of the packing gland 6 is provided with a plurality of sealing adjusting holes 61, the packing gland 6 is axially rotated on the valve rod 2 by shifting the sealing adjusting hole 61, the valve body 1 comprises a left valve body 11 and a right valve body 12, and a third sealing mechanism is arranged between the ball body 3 and the left valve body 11 and the right valve body 12, and the third sealing mechanism comprises a second sealing ring 9 which is arranged at one end of the left valve body 11 and one end of the right valve body 12 corresponding to the ball body 3.
During the assembly, valve rod 2 is connected with spheroid 3, then sheathe in first sealing washer 7 on the valve rod 2, the messenger arc ball bowl 71 of first sealing washer 7 is inconsistent with the arc lug 21 of valve rod 2, then wear out valve rod 2 from valve body 1 is inside, make first sealing washer 7 tightly pressed from both sides by arc lug 21 and limit stop 41, then pack the intracavity with sealed 5 packing, after sheathe in elastic sealing element 8, again with gland 6 threaded connection, make gland 6 can upwards take-up valve rod 2, realize first sealing mechanism, gland 6 supports elastic sealing element 8 simultaneously, realize second sealing mechanism, rethread second sealing washer 9 seals the runner realization third sealing mechanism on left valve body 11 and the right valve body 12.
Claims (5)
1. The utility model provides a fixed ball valve of high canned type, includes valve body, valve rod and spheroid, the one end that the valve body corresponds the valve rod is equipped with the valve rod seat of being connected with the spheroid after supplying the valve rod to insert the valve body, be equipped with limit stop in the valve rod seat, there is the packing chamber that supplies the packing to fill between valve rod and the valve rod seat, the cover is equipped with the gland that is used for impressing the packing into the packing intracavity with the packing on the valve rod, its characterized in that: be equipped with first sealing mechanism between valve rod and the limit stop, first sealing mechanism is including setting up the arc lug that corresponds spheroid one end at the valve rod and setting up the first sealing washer between limit stop and the arc lug, the external diameter of arc lug is greater than limit stop's internal diameter, first sealing washer is equipped with the arc ball bowl with arc lug outer peripheral face looks adaptation towards arc lug one end, first sealing washer one end offsets with limit stop, and the other end passes through arc ball bowl and arc lug interference connection.
2. The high-seal type fixed ball valve according to claim 1, wherein: and a second sealing mechanism is further arranged between the sealing filler and the filler gland and comprises an elastic sealing element sleeved on the peripheral surface of the valve rod, one end of the elastic sealing element abuts against the sealing filler, and the other end of the elastic sealing element abuts against the filler gland.
3. A high-seal type fixed ball valve according to claim 1 or 2, wherein: the packing gland is in threaded connection with the valve rod, a plurality of sealing adjusting holes are formed in the peripheral surface of the packing gland, and the packing gland axially rotates on the valve rod by poking the sealing adjusting holes.
4. A high-seal type fixed ball valve according to claim 1 or 2, wherein: the valve body comprises a left valve body and a right valve body, a third sealing mechanism is arranged between the ball body and the left and right valve bodies, and the third sealing mechanism comprises a second sealing ring which is arranged at one end of the left and right valve bodies corresponding to the ball body.
5. A high-seal type fixed ball valve according to claim 3, wherein: the valve body comprises a left valve body and a right valve body, a third sealing mechanism is arranged between the ball body and the left and right valve bodies, and the third sealing mechanism comprises a second sealing ring which is arranged at one end of the left and right valve bodies corresponding to the ball body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120171125.6U CN214534597U (en) | 2021-01-21 | 2021-01-21 | High-sealing type fixed ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120171125.6U CN214534597U (en) | 2021-01-21 | 2021-01-21 | High-sealing type fixed ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214534597U true CN214534597U (en) | 2021-10-29 |
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ID=78311649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120171125.6U Active CN214534597U (en) | 2021-01-21 | 2021-01-21 | High-sealing type fixed ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214534597U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118375748A (en) * | 2024-06-25 | 2024-07-23 | 山西长河液压设备有限公司 | Anti-blocking high-pressure ball valve |
-
2021
- 2021-01-21 CN CN202120171125.6U patent/CN214534597U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118375748A (en) * | 2024-06-25 | 2024-07-23 | 山西长河液压设备有限公司 | Anti-blocking high-pressure ball valve |
| CN118375748B (en) * | 2024-06-25 | 2024-08-16 | 山西长河液压设备有限公司 | Anti-blocking high-pressure ball valve |
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