CN108869818B - Opening pressure adjustable check valve - Google Patents
Opening pressure adjustable check valve Download PDFInfo
- Publication number
- CN108869818B CN108869818B CN201811059259.8A CN201811059259A CN108869818B CN 108869818 B CN108869818 B CN 108869818B CN 201811059259 A CN201811059259 A CN 201811059259A CN 108869818 B CN108869818 B CN 108869818B
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- Prior art keywords
- spring
- opening pressure
- adjusting
- valve
- adjustable
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
- F16K17/065—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure with differential piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
- F16K15/026—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a one-way valve with adjustable opening pressure, which comprises a valve body (10), and a first spring (70) and a valve core (30) which are arranged in the valve body (10), wherein a valve seat (15) is arranged in the valve body (10), the first spring (70) pushes the valve core (30) to tightly abut against the valve seat (15), the valve body (10) is provided with an adjusting opening (14), the one-way valve with adjustable opening pressure further comprises a second spring (71) and an adjusting piece (50) in threaded connection with the adjusting opening (14), and the first spring (70) and the second spring (71) are arranged between the adjusting piece (50) and the valve core (30). The adjusting piece capable of adjusting the compression degree of the spring is arranged, so that the opening pressure is adjustable, the adjusting range of the opening pressure is large, and the adjustable opening pressure adjusting device can be simultaneously suitable for occasions needing smaller opening pressure and larger opening pressure.
Description
Technical Field
The invention relates to a one-way valve with adjustable opening pressure.
Background
The check valve is commonly called as a check valve, wherein fluid (such as water or oil) can only flow along the water inlet, and the medium at the water outlet can not flow back. Check valves are also known as check valves or check valves. For preventing reverse flow of oil in hydraulic systems or for preventing reverse flow of compressed air in pneumatic systems. In the prior art, a valve core is usually tightly propped against a valve seat by a pressure spring, and only the pressure spring pushes a ball valve or a cone valve to be in contact with the valve seat and achieve the sealing requirement. The pressure spring is positioned by processing a clamp spring groove at the position leaning against the oil outlet of the oil pump, and then putting the clamp spring into the clamp spring to fix the pressure spring so as to finally achieve the purpose of limiting. The opening pressure of the check valve is a fixed value and cannot be adjusted.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a one-way valve with adjustable opening pressure.
In order to achieve the purpose, the invention adopts the following technical scheme: the one-way valve with the adjustable opening pressure comprises a valve body, a first spring and a valve core, wherein the first spring and the valve core are arranged in the valve body, a valve seat is arranged in the valve body, the first spring pushes the valve core to tightly abut against the valve seat, an adjusting opening is formed in the valve body, the one-way valve with the adjustable opening pressure further comprises a second spring and an adjusting piece in threaded connection with the adjusting opening, and the first spring and the second spring are arranged between the adjusting piece and the valve core.
In addition, the invention also provides the following auxiliary technical scheme:
the valve core is provided with a first accommodating hole for accommodating the first spring.
The valve core is provided with a second accommodating hole for accommodating the second spring.
The adjusting member is provided with a first supporting surface that supports the first spring.
The adjusting member is provided with a second support surface that supports the second spring.
The adjusting piece is provided with a first boss matched with the first spring inner ring.
The adjusting piece is provided with a second boss matched with the second spring inner ring.
The adjusting piece is provided with an inner hexagonal hole.
The elastic coefficient of the first spring is smaller than that of the second spring.
The valve body further comprises a water inlet, and the water inlet and the adjusting port are arranged coaxially.
Compared with the prior art, the invention has the advantages that: the adjusting piece capable of adjusting the compression degree of the spring is arranged, so that the opening pressure is adjustable, the adjusting range of the opening pressure is large, and the adjustable opening pressure adjusting device can be simultaneously suitable for occasions needing smaller opening pressure and larger opening pressure.
Drawings
Fig. 1 is a schematic structural diagram of a check valve with adjustable opening pressure of the invention.
Fig. 2 is a schematic view of the adjusting member of fig. 1 moved to the right by a certain distance.
Fig. 3 is a schematic view of the adjusting member of fig. 2 moved to the right by a certain distance.
Detailed Description
The present invention will be described in further non-limiting detail with reference to the following preferred embodiments and accompanying drawings.
As shown in fig. 1 to 3, a check valve with adjustable cracking pressure according to a preferred embodiment of the present invention includes a valve body 10, a valve core 30, an adjusting member 50, a first spring 70, and a second spring 71.
The valve body 10 comprises a water inlet 11 and a water outlet 12 communicated with the water inlet 11, the water inlet 11 is used for being connected with a water inlet pipeline, and the water outlet 12 is used for being connected with a water outlet pipeline. The valve body 10 further comprises an adjusting port 13 in threaded connection with the adjusting member 50 and a sliding hole 14 in sliding fit with the valve core 30, the valve core 30 is in sliding fit in the sliding hole 14, and one end of the valve core is provided with a conical surface 31 which can abut against a valve seat 15 arranged in the valve body 10 so as to seal the water inlet 11. Preferably, the water inlet 11 and the adjusting port 13 are arranged coaxially; the angle between the water outlet 12 and the water inlet 11 is not limited, and the water inlet 11 and the water outlet 12 are parallel to each other in this embodiment.
The valve core 30 includes a through hole 32 radially penetrating the valve core 30, a first receiving hole 33 receiving the first spring 70, and a second receiving hole 34 receiving the second spring 71, and the adjusting member 50 is screwed in the adjusting port 13 and includes a first support surface 51 supporting one end of the first spring 70 and a second support surface 52 supporting one end of the second spring 71. In this embodiment, the diameter of the first spring 70 is smaller than that of the second spring 71, and the diameter of the first receiving hole 33 is smaller than that of the second receiving hole 34. For better positioning of the spring, the adjusting member 50 is further provided with a first boss 53 engaged with the inner ring of the first spring 70 and a second boss 54 engaged with the second spring 71, and the first boss 53 and the second boss 54 are stepped.
The pushing force of the first spring 70 and the second spring 71 on the valve core 30 can be adjusted by rotating the adjusting member 50, so as to adjust the amount of pressure (i.e. the opening pressure) required by the liquid entering from the water inlet 11 to push the valve core 30. The following are several possible positions of the adjustment member 50:
as shown in fig. 3, when the adjusting member 50 is located at the right position, the second spring 71 is in a natural state, and only the first spring 70 applies pressure to the valve element 30 to press the valve seat 15, and the opening pressure is smaller;
as shown in fig. 2, when the adjusting member 50 moves to a position in the middle of the adjusting port 13, both ends of the second spring 71 just abut against the valve core 30 and the adjusting member 50, respectively, and the opening pressure increases;
as the adjusting member 50 continues to move to the left as shown in fig. 1, the first and second springs 70 and 71 are compressed, and the opening pressure continues to increase.
It can be seen that the opening pressure continues to increase as the adjustment member 50 moves from right to left. In general, the first spring 70 is made of a material with a small elastic coefficient, and when the first spring 70 acts alone, the opening pressure is small, the pressure loss is small, and the oil pump is suitable for an oil path requiring small pressure loss; the second spring 71 is made of a material with a larger elastic coefficient, and when a larger stopping pressure is needed, the opening pressure can be greatly increased by moving the adjusting piece 13 to the second spring 71. In order to facilitate the rotation of the adjusting part 13, an inner hexagonal hole 17 is further formed at one end of the adjusting part 13, and the adjusting part can be adjusted by using a commonly used inner hexagonal wrench.
Normally, the fitting between the valve core 30 and the slide fitting hole 14 and the fitting between the first adjusting member 50 and the adjusting port 13 already have high sealing performance, and in order to further prevent liquid from leaking out of the adjusting port 13, a sealing end cover (not shown) may be additionally installed outside the adjusting port 13, at this time, the depth of the adjusting port 13 may be correspondingly lengthened, and when the opening pressure needs to be adjusted, the sealing end cover may be removed first, then the adjustment is performed, and the sealing end cover is returned after the adjustment is completed.
The invention has the advantages that: the adjusting piece capable of adjusting the compression degree of the spring is arranged, so that the opening pressure is adjustable, the adjusting range of the opening pressure is large, and the adjustable opening pressure adjusting device can be simultaneously suitable for occasions needing smaller opening pressure and larger opening pressure.
It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. The utility model provides an opening pressure adjustable check valve, includes valve body (10) and all sets up in first spring (70) and case (30) in valve body (10), be provided with disk seat (15) in valve body (10), first spring (70) promote case (30) support tightly disk seat (15), its characterized in that:
the valve body (10) is provided with an adjusting port (13), the one-way valve with adjustable opening pressure further comprises a second spring (71) and an adjusting piece (50) in threaded connection with the adjusting port (13), the first spring (70) and the second spring (71) are arranged between the adjusting piece (50) and the valve core (30), and the adjusting piece (50) simultaneously adjusts the compression degree of the first spring (70) and the second spring (71);
when the adjusting piece (50) is located at the right position, the first spring (70) is abutted against the valve core (30); when the adjusting piece (50) moves to the middle position, the first spring (70) is in a compressed state, and two ends of the second spring (71) are abutted against the valve core (30) and the adjusting piece (50);
when the adjusting piece (50) is located at the left end position, the first spring (70) and the second spring (71) are both in a compressed state;
the adjusting piece (50) is provided with a first boss (53) matched with the inner ring of the first spring (70); the adjusting piece (50) is provided with a second boss (54) matched with the inner ring of the second spring (71); the first boss (53) and the second boss (54) are stepped.
2. The check valve of claim 1, wherein the opening pressure is adjustable by: the valve core (30) is provided with a first accommodating hole (33) for accommodating the first spring (70).
3. The check valve of claim 1, wherein the opening pressure is adjustable by: the valve core (30) is provided with a second accommodating hole (34) for accommodating the second spring (71).
4. The check valve of claim 1, wherein the opening pressure is adjustable by: the adjusting member (50) is provided with a first support surface (51) that supports the first spring (70).
5. The check valve of claim 1, wherein the opening pressure is adjustable by: the adjusting member (50) is provided with a second support surface (52) that supports the second spring (71).
6. The check valve of claim 1, wherein the opening pressure is adjustable by: the adjusting piece (50) is provided with an inner hexagonal hole (17).
7. The check valve of claim 1, wherein the opening pressure is adjustable by: the elastic coefficient of the first spring (70) is smaller than the elastic coefficient of the second spring (71).
8. The check valve of claim 1, wherein the opening pressure is adjustable by: the valve body (10) further comprises a water inlet (11), and the water inlet (11) and the adjusting port (13) are arranged coaxially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811059259.8A CN108869818B (en) | 2018-09-12 | 2018-09-12 | Opening pressure adjustable check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811059259.8A CN108869818B (en) | 2018-09-12 | 2018-09-12 | Opening pressure adjustable check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108869818A CN108869818A (en) | 2018-11-23 |
| CN108869818B true CN108869818B (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811059259.8A Active CN108869818B (en) | 2018-09-12 | 2018-09-12 | Opening pressure adjustable check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108869818B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118273B (en) * | 2019-05-16 | 2024-05-14 | 广东万和新电气股份有限公司 | Water flow check valve and gas water heater |
| CN110425739A (en) * | 2019-07-17 | 2019-11-08 | 华帝股份有限公司 | Check valve subassembly and water heater |
| CN113187936A (en) * | 2021-05-28 | 2021-07-30 | 安徽省白湖阀门厂有限责任公司 | Intelligent adjusting device of check valve |
| CN114562400B (en) * | 2022-03-25 | 2024-10-29 | 河北华北柴油机有限责任公司 | Constant-pressure backflow preventing device for diesel engine preheating system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2874014Y (en) * | 2006-01-26 | 2007-02-28 | 中国石化胜利油田有限公司孤岛采油厂 | Water injection pipe string bottom valve |
| CN201236974Y (en) * | 2008-07-22 | 2009-05-13 | 宁波星箭航天机械厂 | Non-return valve |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5609300A (en) * | 1995-01-09 | 1997-03-11 | Campbell Hausfeld/Scott Fetzer Company | Airless paint sprayer outlet check valve |
| DE102004014485B3 (en) * | 2004-03-24 | 2005-09-15 | Sauer-Danfoss (Neumünster) GmbH & Co OHG | Pressure relief valve for hydraulic system has a sliding valve body and forms a pressure-sealed chamber for a valve spring |
| CN201844080U (en) * | 2010-11-15 | 2011-05-25 | 中国船舶重工集团公司第七一○研究所 | Air pressure self-adjusting safety valve |
| CN202302120U (en) * | 2011-09-20 | 2012-07-04 | 何东 | Small-aperture pressure valve |
| CN103352884A (en) * | 2013-06-20 | 2013-10-16 | 天津市华荣气动液压成套设备有限公司 | Novel one-way valve |
| CN204153248U (en) * | 2014-10-17 | 2015-02-11 | 莱芜钢铁集团电子有限公司 | A kind of overflow modulating valve |
| CN206268523U (en) * | 2016-12-16 | 2017-06-20 | 浙江汇润电气有限公司 | A kind of delivery pump and its relief valve |
| CN207437854U (en) * | 2017-11-13 | 2018-06-01 | 陈华 | For the spool of Explosion-proof Non-return Valve |
-
2018
- 2018-09-12 CN CN201811059259.8A patent/CN108869818B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2874014Y (en) * | 2006-01-26 | 2007-02-28 | 中国石化胜利油田有限公司孤岛采油厂 | Water injection pipe string bottom valve |
| CN201236974Y (en) * | 2008-07-22 | 2009-05-13 | 宁波星箭航天机械厂 | Non-return valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108869818A (en) | 2018-11-23 |
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