CN202561156U - Adjustable check valve - Google Patents
Adjustable check valve Download PDFInfo
- Publication number
- CN202561156U CN202561156U CN2012202298717U CN201220229871U CN202561156U CN 202561156 U CN202561156 U CN 202561156U CN 2012202298717 U CN2012202298717 U CN 2012202298717U CN 201220229871 U CN201220229871 U CN 201220229871U CN 202561156 U CN202561156 U CN 202561156U
- Authority
- CN
- China
- Prior art keywords
- valve
- spring
- valve rod
- spring eye
- valve body
- 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
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- Safety Valves (AREA)
- Check Valves (AREA)
Abstract
The utility model discloses an adjustable check valve. The adjustable check valve comprises a valve body and a valve clack, wherein the valve body is internally provided with a valve seat corresponding to the valve clack; a valve rod is arranged at the back side of the valve clack; the valve body is provided with a spring hole for containing the valve rod; the valve rod enters into the spring hole; the back end of the valve rod in the spring hole is provided with a spring member; the lower end of the spring member is ejected to the valve rod whole the upper end thereof is ejected to a stop member in the spring hole; the stop member is a check block close to a step surface at the upper end of the spring hole; an adjusting hole is arranged above the spring hole of the valve body; the spring hole is linearly communicated with the adjusting hole; the back end of the check block is provided with an adjusting rod in a fixing manner; the adjusting rod permeates through the adjusting hole to extend outwards; and the adjusting rod is matched with the adjusting hole through a screw thread. The adjustable check valve, disclosed by the utility model, can adjust elastic restoring force of the valve clack conveniently.
Description
Technical field
The utility model relates to a kind of adjustable safety check.
Background technique
Conventional check valves generally comprises valve body and flap; Corresponding flap is provided with valve seat in the valve body; The flap rear side is provided with valve rod, and valve body is provided with the spring eye that holds valve rod, and valve rod gets in the spring eye; Valve rod rear end in the spring eye is provided with spring part, and the spring part lower end withstands on that the other end withstands on the block piece in the spring eye on the valve rod.But the spring part of this safety check is non-adjustable for the pressure elasticity of valve rod; Can occur changing at the long-term elastic-restoring force of the pressure spring of back safety check that uses; The undesirable situation of pressure that possibly cause flap; The elastic-restoring force of many is pressure spring dies down, and makes the sealing dynamics of safety check flap not enough.
Summary of the invention
The utility model technical problem to be solved provides a kind of adjustable safety check that can regulate the flap elastic-restoring force easily.
For this reason, the adjustable safety check that the utility model provides comprises valve body and flap, and corresponding flap is provided with valve seat in the valve body; The flap rear side is provided with valve rod, and valve body is provided with the spring eye that holds valve rod, and valve rod gets in the spring eye; Valve rod rear end in the spring eye is provided with spring part, and the spring part lower end withstands on the valve rod, and the upper end withstands on the block piece in the spring eye; Block piece is the block near the step surface of spring eye upper end, and the spring eye top on the valve body offers adjustment hole, and spring eye communicates with the adjustment hole straight line; The block rear end is fixed with adjustable lever, and adjustable lever passes outside adjustment hole extends, adjustable lever and adjustment hole screw-thread fit.
Because in the adjustable safety check that the utility model provides; Adjustable lever and adjustment hole screw-thread fit; The user is as long as rotary regulating lever can make adjustable lever perhaps move up downwards; The pressure of block is increased, pressure spring spare, thus make the also corresponding increase of the pressure that is delivered to flap; Otherwise, pull-off spring spare when adjustable lever moves up, thus the pressure of flap is reduced.The adjustable safety check of the utility model this relatively simple for structure, but the effect of regulating flap pressure is fine, the person's of being easy to use operation.
Description of drawings
The structure cross-sectional schematic of the adjustable safety check that provides for the utility model among the figure.
Embodiment
Adjustable safety check as shown in the figure, that the utility model provides comprises valve body 1 and flap 2, and corresponding flap 2 is provided with valve seat 3 in the valve body 1; Flap 2 rear sides are provided with valve rod 4, and valve body 1 is provided with the spring eye 5 that holds valve rod 4, and valve rod 4 gets in the spring eye 5; Valve rod 4 rear ends in the spring eye 5 are provided with spring part 6, and spring part 6 lower ends withstand on the valve rod 4, and the upper end withstands on the block piece in the spring eye 5; Block piece is that step surface 7 can stop block 8 near the block 8 of the step surface 7 of spring eye 5 upper ends, and it can excessively not moved up; Spring eye 5 tops on the valve body 1 offer adjustment hole 9, and spring eye 5 communicates with adjustment hole 9 straight lines, and block 8 rear ends are fixed with adjustable lever 10; Adjustable lever 10 passes outside adjustment hole 9 extends, and adjustable lever 10 outer ends one general configuration is used for the handle of rotary regulating lever 10, adjustable lever 10 and adjustment hole 9 screw-thread fit.In the present embodiment, valve body 1 upper end has valve gap 11, and adjustment hole 9 all is arranged on the valve gap 11 with spring eye 5, and valve rod 4 tops and adjustment hole 9 cooperation places are provided with seal ring 12.
Claims (3)
1. an adjustable safety check comprises valve body (1) and flap (2), and corresponding flap (2) is provided with valve seat (3) in the valve body (1); Said flap (2) rear side is provided with valve rod (4); Said valve body (1) is provided with the spring eye (5) that holds valve rod (4), and said valve rod (4) gets in the spring eye (5), and valve rod (4) rear end in the said spring eye (5) is provided with spring part (6); Said spring part (6) lower end withstands on the valve rod (4); The upper end withstands on the block piece in the spring eye (5), it is characterized in that: said block piece is the block (8) near the step surface (7) on the spring eye (5), and spring eye (5) top on the said valve body (1) offers adjustment hole (9); Said spring eye (5) communicates with adjustment hole (9) straight line; Said block (8) rear end is fixed with adjustable lever (10), and adjustable lever (10) passes outside adjustment hole (9) extends, said adjustable lever (10) and adjustment hole (9) screw-thread fit.
2. adjustable safety check according to claim 1 is characterized in that: said valve body (1) upper end has valve gap (11), and said adjustment hole (9) and spring eye (5) all are arranged on the valve gap (11).
3. adjustable safety check according to claim 1 and 2 is characterized in that: said valve rod (4) top and adjustment hole (9) cooperation place are provided with seal ring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202298717U CN202561156U (en) | 2012-05-22 | 2012-05-22 | Adjustable check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202298717U CN202561156U (en) | 2012-05-22 | 2012-05-22 | Adjustable check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202561156U true CN202561156U (en) | 2012-11-28 |
Family
ID=47210815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202298717U Expired - Fee Related CN202561156U (en) | 2012-05-22 | 2012-05-22 | Adjustable check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202561156U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307091A (en) * | 2018-09-26 | 2019-02-05 | 河北博路天宝石油设备制造有限公司 | A kind of explosion-proof type valve of oil equipment |
-
2012
- 2012-05-22 CN CN2012202298717U patent/CN202561156U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307091A (en) * | 2018-09-26 | 2019-02-05 | 河北博路天宝石油设备制造有限公司 | A kind of explosion-proof type valve of oil equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20140522 |