CN103104724A - Check valve with spring pre-tightening force adjustable - Google Patents
Check valve with spring pre-tightening force adjustable Download PDFInfo
- Publication number
- CN103104724A CN103104724A CN 201210533898 CN201210533898A CN103104724A CN 103104724 A CN103104724 A CN 103104724A CN 201210533898 CN201210533898 CN 201210533898 CN 201210533898 A CN201210533898 A CN 201210533898A CN 103104724 A CN103104724 A CN 103104724A
- Authority
- CN
- China
- Prior art keywords
- valve
- spring
- valve seat
- tightening force
- described valve
- 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.)
- Pending
Links
Images
Abstract
The invention provides a check valve with spring pre-tightening force adjustable. The check valve comprises a valve body, a valve seat, a valve plate, a valve rod and a spring. The valve seat is clamped on an opening of the valve body; one side of the valve plate is connected with the valve seat; the valve rod penetrates through the valve seat, and the valve plate is fixed through a nut; the spring penetrates through the valve rod, one end of the spring is fixed on the valve seat, and one end of the spring is connected with an adjusting shim placed on an adjustment nut; and the adjusting nut is connected with outer threads corresponding to the valve rod through inner threads. The check valve with the spring pre-tightening force adjustable has the advantages that because the pre pre-tightening force of the spring of the check valve is adjustable, the adjusting nut rotates to drive the adjusting shim to move left and right along the valve rod, and therefore compression amount of the spring is changed, the pre-tightening force of the spring is adjusted, and accordingly pressure loss of the check valve is changed to satisfy requirements of different users.
Description
Technical field
The present invention relates to a kind of check valve structure, especially relate to the adjustable safety check of a kind of initial tension of spring.
Background technique
The water inlet and outlet safety check of backflow preventer needs the artificial manufacturing pressure loss, and the safety check valve plate needs just can open under certain pressure.The unlatching hydraulic pressure that existing backflow preventer safety check is corresponding is certain, can not adapt to the various demands under different operating modes, and this just needs a kind of check valve structure that can be suitable under various operating conditions.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, safe and reliable adjustable safety check of initial tension of spring.
Technological scheme of the present invention is: the safety check that a kind of initial tension of spring is adjustable, comprise valve body, valve seat,
Valve plate, valve rod and spring, described valve seat is stuck in described valve body openings place, one side of described valve plate contacts sealing with described valve seat, described valve rod passes described valve seat, valve plate and fixes by nut, described spring passes described valve rod, one end is fixed on described valve seat, and an end is connected with adjustment pad on being placed in adjusting nut, and described adjusting nut connects by the internal thread outside thread corresponding with described valve rod.
Advantage and good effect that the present invention has are:
Owing to adopting technique scheme, check-valve spring can be regulated the pretightening force size, relying on rotarily driving of adjusting nut to adjust pad moves left and right along valve rod, thereby change the decrement of spring, adjust the pretightening force size of spring, and then the size of the pressure loss of change safety check, to satisfy different users' requirement.
Description of drawings
Fig. 1 is structural representation of the present invention.
In figure:
1, valve body 2, valve seat 3, valve plate 4, valve rod 5, spring 6, adjusting nut
Embodiment
The invention will be further described below in conjunction with the drawings and the specific embodiments.
As shown in Figure 1, the present invention includes valve body 1, valve seat 2, valve plate 3, valve rod 4 and spring 5, described valve seat 2 is stuck in described valve body 1 opening, one side of described valve plate 3 contacts sealing with described valve seat 2, described valve rod 4 passes described valve seat 2, valve plate 3 and fixes by nut, and described spring 5 passes described valve rod 4, one ends and is fixed on described valve seat 2, one end is connected with adjustment pad on being placed in adjusting nut 6, and described adjusting nut 6 connects by the internal thread outside thread corresponding with described valve rod 4.
During use, spring 5 can be regulated the pretightening force size, relies on rotarily driving of adjusting nut 6 to adjust pad and moves left and right along valve rod 4, thereby change the decrement of spring 5, adjust the pretightening force size of spring 5, and then change the size of the pressure loss of safety check, to satisfy different users' requirement.
Above embodiment has been described in detail the present invention, but described content is only preferred embodiment of the present invention, can not be considered to be used to limiting practical range of the present invention.All equalizations of doing according to the present patent application scope change and improve etc., within all should still belonging to patent covering scope of the present invention.
Claims (1)
1. safety check that initial tension of spring is adjustable, comprise valve body (1), valve seat (2), valve plate (3), valve rod (4) and spring (5), described valve seat (2) is stuck in described valve body (1) opening, one side of described valve plate (3) contacts sealing with described valve seat (2), described valve rod (4) passes described valve seat (2), valve plate (3) and fixing by nut, it is characterized in that: described spring (5) passes described valve rod (4), one end is fixed on described valve seat (2), one end is connected with adjustment pad on being placed in adjusting nut (6), described adjusting nut (6) connects by the internal thread outside thread corresponding with described valve rod (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210533898 CN103104724A (en) | 2012-12-11 | 2012-12-11 | Check valve with spring pre-tightening force adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210533898 CN103104724A (en) | 2012-12-11 | 2012-12-11 | Check valve with spring pre-tightening force adjustable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103104724A true CN103104724A (en) | 2013-05-15 |
Family
ID=48312813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210533898 Pending CN103104724A (en) | 2012-12-11 | 2012-12-11 | Check valve with spring pre-tightening force adjustable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103104724A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511686A (en) * | 2013-09-17 | 2014-01-15 | 天津市倒流防止器制造有限公司 | Backflow preventing device structure |
| CN105840889A (en) * | 2016-06-04 | 2016-08-10 | 江苏神通阀门股份有限公司 | Lifting type check valve |
| CN106013134A (en) * | 2016-07-18 | 2016-10-12 | 浙江水利水电学院 | Expanding concrete tubular pile as well as expanding device and expanding method |
| CN106246978A (en) * | 2015-12-29 | 2016-12-21 | 中国特种飞行器研究所 | A kind of aerostatics is with tool-free machine automatization drain tap |
-
2012
- 2012-12-11 CN CN 201210533898 patent/CN103104724A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511686A (en) * | 2013-09-17 | 2014-01-15 | 天津市倒流防止器制造有限公司 | Backflow preventing device structure |
| CN103511686B (en) * | 2013-09-17 | 2016-07-06 | 天津市倒流防止器制造有限公司 | A kind of backflow preventer structure |
| CN106246978A (en) * | 2015-12-29 | 2016-12-21 | 中国特种飞行器研究所 | A kind of aerostatics is with tool-free machine automatization drain tap |
| CN105840889A (en) * | 2016-06-04 | 2016-08-10 | 江苏神通阀门股份有限公司 | Lifting type check valve |
| CN106013134A (en) * | 2016-07-18 | 2016-10-12 | 浙江水利水电学院 | Expanding concrete tubular pile as well as expanding device and expanding method |
| CN106013134B (en) * | 2016-07-18 | 2020-03-17 | 浙江水利水电学院 | Diameter-expanding concrete pipe pile, diameter-expanding device and diameter-expanding method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103104724A (en) | Check valve with spring pre-tightening force adjustable | |
| WO2009113875A3 (en) | Bellows valve | |
| CN201110412Y (en) | Fluid pressure reducing valve | |
| CN101298890A (en) | Adjustable compression release valve | |
| CN101725742A (en) | One-way overflow valve | |
| CN203571146U (en) | Gas pressure reducer | |
| CN202674331U (en) | Pressurizing stop valve | |
| CN101699678B (en) | Hydraulic wire grip | |
| CN102943906A (en) | Check valve device | |
| CN201502761U (en) | Pressure reducing valve with composite valve | |
| CN202937849U (en) | Check valve with adjustable spring pre-tightening force | |
| CN201636400U (en) | One-way overflow valve | |
| CN204062045U (en) | A kind of carbon dioxide reduction valve | |
| CN203335949U (en) | Lifting type check valve | |
| CN203718065U (en) | Pressure release valve | |
| WO2016203332A1 (en) | Hydraulic pressure controller and method for manufacturing a similar hydraulic pressure controller | |
| CN202937845U (en) | Check valve device | |
| CN201546268U (en) | Water inlet device for sanitary ware product with water tank | |
| CN209196187U (en) | A kind of piston valve core driving mechanism applied to check-valves | |
| CN201533129U (en) | Hydraulic tentioner | |
| CN201180831Y (en) | Adjustable pressure reducing valve | |
| CN202192473U (en) | Novel brake structure of spindle box of lathe | |
| CN201827163U (en) | Pressure relief valve for main-control valve of excavating machine | |
| CN207701857U (en) | Variable displacement safety valve | |
| CN202561156U (en) | Adjustable check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130515 |