CN220891113U - High-precision small-flow regulating valve - Google Patents
High-precision small-flow regulating valve Download PDFInfo
- Publication number
- CN220891113U CN220891113U CN202322812771.8U CN202322812771U CN220891113U CN 220891113 U CN220891113 U CN 220891113U CN 202322812771 U CN202322812771 U CN 202322812771U CN 220891113 U CN220891113 U CN 220891113U
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- Prior art keywords
- valve
- sleeve
- hole
- flow regulating
- stepped
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 238000005457 optimization Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model belongs to the field of valves, and particularly relates to a high-precision small-flow regulating valve. The utility model provides a high-precision small-flow regulating valve which comprises a valve body, a valve seat, a sleeve, a sealing gasket and a valve core; the valve body is provided with three communicated cavity holes, wherein one cavity hole is stepped; the center of the valve seat is provided with a center hole, the center hole is provided with a sealing surface, the side wall of the valve seat is provided with a flange, the valve seat is sleeved in the stepped cavity hole, and the flange is attached to the stepped surface through a sealing ring; the sleeve is sleeved in the stepped cavity hole, one end of the sleeve is propped against the valve seat, the other end of the sleeve is fixed, and the side wall of the sleeve is provided with a runner hole which continues the stepped cavity hole to be communicated with other cavity holes; the valve core props against the sealing surface to enable the other two cavity holes of the valve body to be unable to communicate. The high-precision small-flow regulating valve provided by the utility model is convenient for replacing the valve seat.
Description
Technical Field
The utility model belongs to the field of valves, and particularly relates to a high-precision small-flow regulating valve.
Background
In a traditional high-precision small-flow valve, a cavity hole in the valve body is provided with a thread bush, the thread bush is in threaded connection with the cavity hole, a valve core blocks a central hole of the thread bush, and the opening and closing of the central hole are controlled by adjusting the valve core so as to adjust the flow. In the long-term use process, the repeated friction between the central hole and the valve core causes the abrasion of the central hole, and the valve core and the central hole are closed to form gaps, so that the flow accuracy of the valve is affected, and the threaded sleeve is required to be replaced periodically. The threaded sleeve is in threaded connection with the cavity hole, so that the engagement of the threaded sleeve and the cavity hole is usually very tight in order to ensure the air tightness, and therefore, the threaded sleeve is difficult to replace each time.
Disclosure of utility model
The high-precision small-flow regulating valve provided by the utility model can effectively solve the problems in the prior art.
The utility model provides a high-precision small-flow regulating valve which comprises a valve body, a valve seat, a sleeve, a sealing gasket and a valve core; the valve body is provided with three communicated cavity holes, wherein one cavity hole is stepped; the center of the valve seat is provided with a center hole, the center hole is provided with a sealing surface, the side wall of the valve seat is provided with a flange, the valve seat is sleeved in the stepped cavity hole, and the flange is attached to the stepped surface through a sealing ring; the sleeve is sleeved in the stepped cavity hole, one end of the sleeve is propped against the valve seat, the other end of the sleeve is fixed, and the side wall of the sleeve is provided with a runner hole which continues the stepped cavity hole to be communicated with other cavity holes; the valve core props against the sealing surface to enable the other two cavity holes of the valve body to be unable to communicate.
As a further optimization of the utility model, the valve further comprises a valve rod, and the valve rod is connected with the valve core.
As a further optimization of the utility model, the valve rod and the valve core are integrally formed.
As a further optimization of the utility model, the valve rod is further provided with a valve cover, the valve cover is sleeved on the valve rod, and one end of the valve cover props against the other end of the sleeve so as to fix the sleeve.
As a further optimization of the utility model, the contact surface of the valve cover and the sleeve is provided with a sealing gasket.
As a further refinement of the utility model, the valve cap is screwed to the valve body or fastened by means of a screw.
As a further optimization of the utility model, the central hole of the valve seat is cylindrical; the valve core is conical corresponding to the shape of the central hole.
As a further refinement of the utility model, the side wall of the sleeve engages the inner wall of the stepped bore.
As a further refinement of the utility model, the end of the sleeve remote from the valve seat is provided with a collar inwardly.
The high-precision small-flow regulating valve provided by the utility model is convenient for replacing the valve seat.
Drawings
FIG. 1 is a schematic view in semi-section of a prior art structure;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1;
FIG. 3 is a schematic view of the structure of the present embodiment in semi-section;
FIG. 4 is an enlarged schematic view of a portion of FIG. 3;
The valve comprises a valve body 1, a stepped cavity hole 1a, a valve seat 2, a flange 2a, a sleeve 3, a runner hole 3a, a sealing gasket 4, a valve core 5, a valve rod 6, a valve cover 7 and a threaded sleeve 8.
Detailed Description
The internal structure of the existing high-precision small-flow regulating valve is shown in fig. 1 and 2, the valve body 1 is provided with three mutually communicated cavity holes, a thread bush 8 is sleeved in one cavity hole, the thread bush 8 is in threaded connection with the cavity hole, the center of the thread bush 8 is provided with a center hole, and when the valve is closed, the valve core 5 is matched with the center hole to block the center hole, so that the other two cavity holes of the valve body 1 cannot be communicated; when the valve is opened, the valve core 5 is separated from the central hole, so that the other two cavity holes of the valve body 1 are communicated; when the flow is required to be regulated, the valve core 5 is controlled to act.
In the use, the valve core 5 will rub with the center hole in the action process, the valve will wear easily in the frequent opening and closing process, or the impurity in the flowing medium will destroy the center hole, thus causing the valve to leak, the common solution is more thread sleeve 8. However, in order to ensure the tightness, the threaded engagement of the threaded sleeve 8 and the cavity hole is usually very tight, and sometimes a sealant is used, so that the threaded sleeve 8 is very inconvenient to detach.
This embodiment is an improvement over the prior art and, as shown in fig. 3 and 4, includes a valve body 1, a valve seat 2, a sleeve 3, a gasket 4, and a valve element 5.
The valve body 1 is provided with three-way bores, one of which is stepped, called stepped bore 1a. The shape of the valve seat 2 corresponds to the shape of the end with the smaller section of the stepped cavity hole 1a, a circle of flange 2a is arranged on the side wall of the valve seat 2, when the valve seat 2 is sleeved into the end with the smaller section of the stepped cavity hole 1a, the flange 2a is attached to the stepped surface of the stepped cavity hole 1a, and a sealing gasket 4 is arranged between the flange 2a and the stepped surface in order to ensure the tightness of the attachment of the flange 2a to the stepped surface. The center of the valve seat 2 is provided with a center hole, the center hole is provided with a sealing surface, when the valve core 5 is in contact with the center Kong Wen of the valve seat 2, the valve core 5 props against the sealing surface to block the center hole, so that the other two cavity holes in the valve body 1 cannot be communicated, and when the valve core 5 is separated from the center hole, the other two cavity holes of the valve body 1 can be communicated. In this embodiment, the valve rod 6 is provided, the valve rod 6 is connected with the valve core 5, the distance between the valve core 5 and the central hole can be controlled by controlling the valve rod 6, the valve rod 6 and the valve core 5 are integrated, and in other embodiments, the valve rod 6 and the valve core 5 can be made into a detachable structure.
In this embodiment, the valve seat 2 is fixed by the sleeve 3, the sleeve 3 is arranged at the end with larger section of the stepped cavity 1a, one end of the sleeve 3 is pressed against the valve seat 2, and the other end of the sleeve 3 is fixed to fix the valve seat 2. Specifically, be provided with valve gap 7, valve gap 7 cover is established on valve rod 6, and the one end of valve gap 7 supports the other end of sleeve 3, and valve gap 7 and valve body 1 screw thread fastening or through the fix with screw, just can fix sleeve 3, and then fix disk seat 2. Preferably, a gasket 4 is also provided between the contact surface of the valve cover 7 and the sleeve 3, ensuring tightness. The side wall of the sleeve 3 is provided with a runner hole 3a, the runner hole 3a is used for continuing the stepped cavity hole 1a to be communicated with other cavities, and in order not to influence the flow, the size of the runner hole 3a is larger than the hole at the joint of the stepped cavity hole 1a and the other cavities. In the embodiment, the side wall of the sleeve 3 is attached to the inner wall of the stepped cavity hole 1a, so that on one hand, the design can well ensure that fluid cannot overflow from the outer side wall of the valve seat 2, and on the other hand, the sleeve 3 can be effectively prevented from being deformed by extrusion force of two ends. In other embodiments, the end of the sleeve 3 far away from the valve seat 2 is provided with a retainer ring inwards, and when the sleeve is disassembled, a finger can easily disassemble the sleeve 3 by buckling the retainer ring.
In the present embodiment, the center hole of the valve seat 2 is cylindrical, the valve body 5 is conical corresponding to the shape of the center hole, and the cylindrical center hole is plugged by the conical valve body 5. In other embodiments, the valve core 5 may also be a sphere, and the central hole may be configured as a circular arc corresponding to the sphere, which is determined according to the specific application requirements.
When the valve cover 7 and the valve body 1 are loosened, the sleeve 3 and the valve seat 2 can be taken out easily in sequence, the valve seat 2 is replaced, the installation is very convenient, and the workload and the working strength of field operators can be greatly reduced.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.
Claims (9)
1. The high-precision small-flow regulating valve is characterized by comprising a valve body, a valve seat, a sleeve, a sealing gasket and a valve core;
the valve body is provided with three communicated cavity holes, wherein one cavity hole is stepped;
The center of the valve seat is provided with a center hole, the center hole is provided with a sealing surface, the side wall of the valve seat is provided with a flange, the valve seat is sleeved in the stepped cavity hole, and the flange is attached to the stepped surface through a sealing ring;
The sleeve is sleeved in the stepped cavity hole, one end of the sleeve is propped against the valve seat, the other end of the sleeve is fixed, and the side wall of the sleeve is provided with a runner hole which continues the stepped cavity hole to be communicated with other cavity holes;
the valve core props against the sealing surface to enable the other two cavity holes of the valve body to be unable to communicate.
2. The high-precision small-flow regulating valve as claimed in claim 1, further comprising a valve stem connected to the valve core.
3. The high-precision small-flow regulating valve as claimed in claim 1, wherein the valve stem is integrally formed with the valve core.
4. The high-precision small-flow regulating valve as claimed in claim 2, further comprising a valve cover, wherein the valve cover is sleeved on the valve rod, and one end of the valve cover abuts against the other end of the sleeve to fix the sleeve.
5. The high-precision small-flow regulating valve as claimed in claim 4, wherein the contact surface of the valve cover and the sleeve is provided with a sealing gasket.
6. The high-precision small flow regulating valve as claimed in claim 4, wherein the valve cover is screwed or bolted to the valve body.
7. The high-precision small flow regulating valve as claimed in claim 1, wherein the central hole of the valve seat is cylindrical; the valve core is conical corresponding to the shape of the central hole.
8. The high-precision small-flow regulating valve as claimed in claim 1, wherein the side wall of the sleeve is attached to the inner wall of the stepped bore.
9. A high accuracy low flow regulator valve according to claim 8, wherein the end of the sleeve remote from the valve seat is provided with a retainer ring inwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322812771.8U CN220891113U (en) | 2023-10-20 | 2023-10-20 | High-precision small-flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322812771.8U CN220891113U (en) | 2023-10-20 | 2023-10-20 | High-precision small-flow regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220891113U true CN220891113U (en) | 2024-05-03 |
Family
ID=90840817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322812771.8U Active CN220891113U (en) | 2023-10-20 | 2023-10-20 | High-precision small-flow regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220891113U (en) |
-
2023
- 2023-10-20 CN CN202322812771.8U patent/CN220891113U/en active Active
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