CN202756704U - Adjustable resistance check valve - Google Patents
Adjustable resistance check valve Download PDFInfo
- Publication number
- CN202756704U CN202756704U CN 201220399748 CN201220399748U CN202756704U CN 202756704 U CN202756704 U CN 202756704U CN 201220399748 CN201220399748 CN 201220399748 CN 201220399748 U CN201220399748 U CN 201220399748U CN 202756704 U CN202756704 U CN 202756704U
- Authority
- CN
- China
- Prior art keywords
- valve
- spring
- valve body
- adjustable resistance
- spool
- 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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- Check Valves (AREA)
Abstract
The utility model discloses an adjustable resistance check valve comprising a valve body (1), a valve core (4), a valve cap (7), a spring (6), and an adjusting bolt (12). The valve cap (7) is installed on the valve body (1). A cavity is used for movement of the valve core (4) and arranged at the center of the valve cap (7). The spring (6) is arranged in the cavity. The adjusting bolt (12) is installed on the upper portion of the valve cap (7) and pressed on the spring (6) through a baffle (8). One end of the valve core (4) is connected with the valve body (1) through a sealing ring (3). The adjustable resistance check valve has the advantages of being compact in structure, small in volume, light in weight, convenient to install, adjustable in fluid resistance, sensitive and rapid in opening and closing, and suitable for being installed in various fluid, gas system pipes and the like where water head resistance is relatively high required and preventing mediums from back flowing.
Description
Technical field
The utility model relates to a kind of safety check, relates in particular to a kind of adjustable resistance safety check.
Technical background
Pipeline is that safety check is installed in the refluence that is used for preventing medium in the pipeline for delivery of the visual plant of medium and hydraulic pressure, air pressure control, to guarantee control and normally carrying out of producing.Safety check generally comprises valve body, spool and spring, relies on gravity or spring to arrange to the medium source direction and forms certain pretightening force, when the medium of carrying reaches certain pressure, overcomes this pretightening force, and medium will back down spool and reach the conveying purpose; When the medium reverse flow, then spool is closed in gravity or spring action meeting, cuts off medium channel.
In the prior art, the pretightening force of safety check is definite when dispatching from the factory, only can play the effect of one-way valve in the use, can not adjust according to the requirement of using, along with hydraulics is applied in industry-by-industry, various device more and more widely, and safety check is as the control unit in the hydraulic system, act on extremely important, on the rubber and plastic extrusion equipment, according to the difference of raw material batch, the resistance of accurately controlling safety check seems even more important especially.Therefore, but the safety check of a kind of resistance trimming of needs, can be according to the difference of raw material batch, the pressure medium of each workshop section of accurate adjustment and the pressure balance of lubrication system, thus guarantee the stable of quality of product, but have no the report of this series products or technology in the prior art.
Summary of the invention
In order to solve the problems of the prior art, the purpose of this utility model provides a kind of adjustable resistance safety check that resistance is adjustable, can satisfy the requirement of fluid medium pressure accurate adjustment that has, and uses this valve can guarantee the stability of quality of product.
For achieving the above object, the technological means of employing described in the utility model is: a kind of adjustable resistance safety check, comprise valve body, spool, valve gap, spring, adjusting bolt, described valve gap is installed on the valve body, described valve gap center is provided with the cavity for valve core movement, mounting spring in the cavity, described adjusting bolt is installed in valve gap top, and is pressed on the spring by catch; One end of described spool is connected with valve body by seal ring.
Further, described spool is connected fixing bolt with seal ring and connects.
Further, described valve gap and valve body joint are provided with gasket seal.
Further, described adjusting bolt is connected with valve gap by fastening nut, pad and the seal ring that connects successively.
The beneficial effects of the utility model are: by adjusting bolt, so that the safety check resistance is adjustable, can satisfy the requirement of fluid medium pressure accurate adjustment, guarantee the stability of quality of product.
Description of drawings
Below in conjunction with accompanying drawing the technical solution of the utility model is described.
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, valve body, 2, fixing bolt, 3, seal ring, 4, spool, 5, gasket seal, 6, spring, 7, valve gap, 8, catch, 9, seal ring, 10, pad, 11, fastening nut, 12, adjusting bolt.
Embodiment
A kind of adjustable resistance safety check as shown in Figure 1, comprise valve body 1, spool 4, valve gap 7, spring 6, adjusting bolt 12, described valve gap 7 is installed on the valve body 1, described valve gap 7 centers are provided with the cavity for spool 4 motions, mounting spring 6 in the cavity, described adjusting bolt 12 is installed in valve gap 7 tops, and is pressed on the spring 6 by catch 8; One end of described spool 4 is connected with valve body 1 by seal ring 3.
Further, described spool 4 is connected with seal ring by fixing bolt 2 connections.
Further, described valve gap 7 and valve body 1 joint are provided with gasket seal 5.
Further, described adjusting bolt 12 is connected with seal ring by the fastening nut 11, the pad 10 that connect successively and is connected with valve gap 7.
Medium flows along the direction of arrow, flow to the right side by valve, need to overcome the Action of Gravity Field of spool and the spring pressure of spool tail end, can promote spool removes, medium just can flow to the right side, spool 4 can be under the acting in conjunction of spring 6 and valve body 1 inner fluid, mobile in the cavity of valve gap 7, be provided with adjusting bolt 12 and spring 6 on the valve gap 7, in order to control unlatching dynamics and the amplitude peak of spool 4, this valve arrangement is compact, and volume is little, and is lightweight, easy for installation, fluid resistance is adjustable, the switch rapid sensitive, can be used for vertical, the comprehensive installation such as horizontal is applicable to various fluids, in the system pipeline that gas etc. are had relatively high expectations to the head resistance, prevent that medium from flowing backwards.
Claims (4)
1. adjustable resistance safety check, it is characterized in that: comprise valve body (1), spool (4), valve gap (7), spring (6), adjusting bolt (12), described valve gap (7) is installed on the valve body (1), described valve gap (7) center is provided with the cavity for spool (4) motion, mounting spring (6) in the cavity, described adjusting bolt (12) is installed in valve gap (7) top, and is pressed on the spring (6) by catch (8); One end of described spool (4) is connected with valve body (1) by seal ring (3).
2. adjustable resistance safety check according to claim 1, it is characterized in that: described spool (4) is connected 3 with seal ring) connect by fixing bolt (2).
3. adjustable resistance safety check according to claim 1, it is characterized in that: described valve gap (7) and valve body (1) joint are provided with gasket seal (5).
4. adjustable resistance safety check according to claim 1 is characterized in that: described adjusting bolt (12) is connected 9 by the fastening nut (11), the pad (10) that connect successively with seal ring) be connected with valve gap (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220399748 CN202756704U (en) | 2012-08-14 | 2012-08-14 | Adjustable resistance check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220399748 CN202756704U (en) | 2012-08-14 | 2012-08-14 | Adjustable resistance check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756704U true CN202756704U (en) | 2013-02-27 |
Family
ID=47735888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220399748 Expired - Fee Related CN202756704U (en) | 2012-08-14 | 2012-08-14 | Adjustable resistance check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756704U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498780A (en) * | 2013-10-18 | 2014-01-08 | 钟小玉 | Single-cylinder double-acting reciprocating piston pump with improved structure |
| CN104295778A (en) * | 2014-09-12 | 2015-01-21 | 诸文伟 | Natural gas lift check valve |
-
2012
- 2012-08-14 CN CN 201220399748 patent/CN202756704U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498780A (en) * | 2013-10-18 | 2014-01-08 | 钟小玉 | Single-cylinder double-acting reciprocating piston pump with improved structure |
| CN103498780B (en) * | 2013-10-18 | 2016-04-06 | 钟小玉 | A kind of structure improved single-cylinder dual-action reciprocating piston pump |
| CN104295778A (en) * | 2014-09-12 | 2015-01-21 | 诸文伟 | Natural gas lift check valve |
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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: 20130227 Termination date: 20130814 |