CN108980421A - A kind of adjustable check valve of cracking pressure - Google Patents
A kind of adjustable check valve of cracking pressure Download PDFInfo
- Publication number
- CN108980421A CN108980421A CN201811065646.2A CN201811065646A CN108980421A CN 108980421 A CN108980421 A CN 108980421A CN 201811065646 A CN201811065646 A CN 201811065646A CN 108980421 A CN108980421 A CN 108980421A
- Authority
- CN
- China
- Prior art keywords
- spring
- regulating part
- cracking pressure
- check valve
- 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
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Classifications
-
- 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
- F16K15/06—Check valves with guided rigid valve members with guided stems
Abstract
Present invention discloses a kind of adjustable check valves of cracking pressure, including valve body (10) and the first spring (70) and spool (30) that are all set in valve body (10), valve seat (15) are provided in valve body (10), first spring (70) pushes spool (30) to push against valve seat (15), valve body (10), which offers, adjusts mouth (14), the adjustable check valve of cracking pressure further includes regulating device (80), second spring (71), the second regulating part (50) being threadedly coupled with adjusting mouth (14) and the first regulating part (60) being threadedly coupled with the second regulating part (50), first spring (70) is set between spool (30) and the first regulating part (50).Second spring (71) is set between spool (30) and the second regulating part (60), rotatable first regulating part (50) of regulating device (80) and the second regulating part (60).By the way that the regulating part of adjustable spring-compressed degree is arranged, so that cracking pressure is adjustable, and cracking pressure adjustable range is big.
Description
Technical field
The present invention relates to a kind of adjustable check valves of cracking pressure.
Background technique
Check valve is that fluid (can be water or oil etc.) can only be flowed along water inlet, and water outlet medium can not but flow back, custom
Claim check valve.Check valve is also known as check-valves or non-return valve.For preventing oil stream reverse flow in hydraulic system, or for pneumatic
Compressed air reverse flow is prevented in system.Spool is usually pushed against valve seat by compression spring by check valve in the prior art
On, it only pushes ball valve or cone valve to contact with its valve seat with compression spring and reaches the requirement of sealing.And the positioning of compression spring is
The position for leaning against the oil outlet of oil pump processes a jump-ring slot, is put into circlip later with its fixation pressure spring and is finally reached limit
Purpose.The cracking pressure of this check valve is definite value, can not be adjusted.
Summary of the invention
It is adjustable unidirectional it is an object of the invention in view of the above-mentioned drawbacks in the prior art, provide a kind of cracking pressure
Valve, and cracking pressure is easy to adjust.
For achieving the above object, present invention employs following technical solutions: a kind of adjustable check valve of cracking pressure,
Including valve body and it is all set in intracorporal first spring of the valve and spool, valve seat, first bullet are provided in the valve body
Spring pushes the spool to push against the valve seat, it is characterised in that: the valve body offers adjusting mouth, and the cracking pressure is adjustable
Check valve further includes regulating device, second spring, with second regulating part that is threadedly coupled of adjusting mouth and with described second
The first regulating part that regulating part is threadedly coupled, first spring are set between the spool and first regulating part.Institute
It states second spring to be set between the spool and second regulating part, rotatable first regulating part of regulating device
With second regulating part.
In addition, the present invention also proposes following attached technical scheme:
The connecting column that the regulating device includes terminal pad, is connected in the terminal pad, second regulating part open up
There is the matching hole with connecting column mating.
The regulating device further includes being rotatably connected in the allen wrench in the terminal pad, first regulating part
Offer the Hexagon hole with allen wrench cooperation.
The regulating device further includes the reinforcing column being connected in the terminal pad.
The second receipts that the spool offers the first accepting hole for accommodating first spring and accommodates the second spring
Rong Kong.
First regulating part is provided with the first supporting surface for supporting first spring, and second regulating part is provided with
Support the second supporting surface of the second spring.
The coefficient of elasticity of first spring is different from the coefficient of elasticity of the second spring.
The coefficient of elasticity of first spring is less than the coefficient of elasticity of the second spring.
The valve body further includes water inlet, and the water inlet and the adjusting mouth are coaxially set.
Compared with the prior art, the present invention has the advantages that passing through the regulating part that adjustable spring-compressed degree is arranged,
So that cracking pressure is adjustable, and cracking pressure adjustable range is big, can be applicable to smaller cracking pressure and larger unlatching simultaneously
The occasion of pressure；In addition, the present invention is additionally provided with regulating device, cracking pressure adjusts more convenient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the adjustable check valve of cracking pressure of the present invention.
Fig. 2 is that the second regulating part moves right the schematic diagram after certain distance in Fig. 1.
Fig. 3 is that the first regulating part moves right the schematic diagram after certain distance in Fig. 2.
Fig. 4 is that the first regulating part moves right the schematic diagram after certain distance in Fig. 1.
Fig. 5 is the right view of the adjustable check valve of cracking pressure in Fig. 3.
Fig. 6 is the schematic diagram of regulating device and the mating of the first, second regulating part.
Specific embodiment
In conjunction with the preferred embodiment and its attached drawing is further non-limitingly described in detail technical solution of the present invention.
As shown in Figures 1 to 4, corresponding to a kind of adjustable check valve of the cracking pressure of preferred embodiment of the present invention, packet
Include valve body 10, spool 30, the first regulating part 50, the second regulating part 60, the first spring 70 and second spring 71.
The valve body 10 includes water inlet 11 and the water outlet 12 communicated with water inlet 11, and water inlet 11 is used for and water inlet pipe
Road is connected, and water outlet 12 with outlet pipeline for being connected.Valve body 10 further include the adjusting mouth 13 that is threadedly coupled with regulating part 50 with
And the slide fit hole 14 being slidably matched with spool 30, the sliding mating of spool 30 is in slide fit hole 14, and one end is provided with the conical surface 31,
It can lean to seal water inlet 11 with the valve seat 15 being arranged in valve body 10.Preferably, water inlet 11 and adjusting mouth 13 are coaxial
Line setting；With no restrictions, water inlet 11 and water outlet 12 are parallel to each other the angle of water outlet 12 and water inlet 11 in the present embodiment.
Spool 30 includes the through-hole 32 for extending radially through spool 30, accommodate the first accepting hole 33 of the first spring 70 and accommodates the
Second accepting hole 34 of two springs 71, the second regulating part 60, which is threaded in, to be adjusted in mouth 13, and then screw thread connects the first regulating part 50
Connect at 60 center of the second regulating part, rotate the second regulating part 60 can after, the second regulating part 60 can be moved along 13 axis of mouth is adjusted；Rotation
Turn the first regulating part 50, then the first regulating part 50 can be made mobile relative to the second regulating part 60.First regulating part 50 includes support
First supporting surface 51 of 70 one end of the first spring, the second regulating part 60 include second supporting surface of support 71 one end of second spring
61.In the present embodiment, the diameter of the first spring 70 is less than the diameter of second spring 71, therefore the diameter of the first accepting hole 33 is less than
The diameter of second accepting hole 34.
By the first regulating part 50 of rotation and adjustable first spring 70 of the second regulating part 60, second spring 71 to spool
30 thrust, thus the size (i.e. cracking pressure) of pressure needed for adjusting the liquid-driving spool 30 of the entrance of water inlet 11.Below
For several possible positions:
As shown in Figure 1, the first regulating part 50 and the second regulating part 60 are generally in the position for adjusting 13 middle part of mouth, at this
Under position, the first spring 70 and second spring 71 are in compressive state, and the first spring 70 and second spring 71 apply spool 30
Plus-pressure is allowed to compress valve seat 15, and cracking pressure is larger at this time；
As shown in Fig. 2, the second regulating part 60 is moved rightwards in Fig. 2 relative to Fig. 1, and under this position, second spring 71
It restores, only the first spring 70 applies pressure to spool 30, and cracking pressure reduces at this time.
As shown in figure 3, the first regulating part 50 is moved rightwards in Fig. 3 relative to Fig. 2, and under this position, second spring 71
State is constant, and the decrement of the first spring 70 becomes smaller, and cracking pressure is smaller.
As shown in figure 4, the first regulating part 50 is moved rightwards in Fig. 4 relative to Fig. 1, and under this position, the first spring 70
It restores, only second spring 71 applies pressure to spool 30, and cracking pressure is less than the cracking pressure of spool in Fig. 1.
As it can be seen that by adjusting the relative position of the first regulating part 50 and the second regulating part 60, it can large-scale regulating valve
The cracking pressure of core.Under normal conditions, the first spring 70 is different with 71 coefficient of elasticity of second spring.In the present embodiment, the first bullet
The coefficient of elasticity of spring 70 is smaller, and when the first 70 independent role of spring, cracking pressure is smaller, and the pressure loss is small, is suitable for needing
It will be in the oil circuit of the smaller pressure loss；And second spring 71 is then made of the material of larger coefficient of elasticity, when larger section of needs
Only when pressure, the relative position of the first regulating part 50 and the second regulating part 60 is adjusted, second spring 71 is intervened, can make to open
Pressure is substantially improved.
For convenience of the first regulating part 50 of rotation, it is also provided with Hexagon hole 17 in 50 one end of the first regulating part, can be used
Common allen wrench is adjusted.Due to individually rotation the first regulating part 50 when, the second regulating part 60 may transfer,
Likewise, adjust the second regulating part 60 when, the first regulating part 50 may also can transfer, in this case, be just difficult to by first adjust
Part 50 and the second regulating part 60 are adjusted to respective suitable position, for this purpose, following regulating device 80 can be used, such as Fig. 5 and Fig. 6 institute
Show, which includes terminal pad 81, four connecting columns 82 being connected in terminal pad 81 and be connected to terminal pad 81
On reinforcing column 84.4 and four one-to-one matching holes 62 of connecting column 82 are also provided on 60 surface of the second regulating part, are matched
Hole 62 is connect preferably to be uniformly distributed using 60 center of the second regulating part as the center of circle.Reinforcing 84 one end of column can be protruded into the matching hole 62,
The other end is connected with terminal pad 81, and in the present embodiment, the two is connected through a screw thread.Reinforcing column 84 is threaded in 81 side of terminal pad
The quantity in face, reinforcing column 84 is not limited to one.The via hole passed through for allen wrench 90 is additionally provided at 81 center of terminal pad
83。
Method using the regulating device 80 is as follows: connecting column 82 being inserted into matching hole 62 first, then by interior hexagonal
Spanner 90 passes through via hole 83 and is inserted into Hexagon hole 17, when needing to rotate the first regulating part 50, holds reinforcing column 84 on the other hand
Holding position (if without reinforcing column 84, can directly hold terminal pad 81, it is more laborsaving to hold reinforcing column 84), then rotate interior hexagonal
The first regulating part 50 can be adjusted in spanner 90.When needing to rotate the second regulating part 60, holding reinforcing column 84 (or terminal pad
81) it rotates, the first regulating part 50 can also follow the second regulating part 60 mobile at this time, solid again after the second regulating part 60 is rotated in place
Surely it lives the second regulating part 60 and adjusts the first regulating part 50.
Under normal conditions, cooperation, the first regulating part 50 and the second regulating part 60 and second of spool 30 and slide fit hole 14
Regulating part 60 and the cooperation adjusted between mouth 13 have been provided with higher leakproofness, to further prevent liquid to seep from mouth 13 is adjusted
Out, end cover (not shown) can be installed outside mouth 13 additional adjusting, the depth for adjusting mouth 13 at this time can be lengthened accordingly, need to adjust
When saving cracking pressure, end cover can be first removed, is adjusted later, adjusting, which finishes, puts in back end cover.
The present invention has the advantages that by the regulating part that adjustable spring-compressed degree is arranged, so that cracking pressure can
It adjusts, and cracking pressure adjustable range is big, can be applicable to the occasion of smaller cracking pressure and larger cracking pressure simultaneously；Separately
Outside, the present invention is additionally provided with regulating device, and cracking pressure adjusts more convenient.
It is pointed out that the technical concepts and features of above-mentioned preferred embodiment only to illustrate the invention, its object is to
Those skilled in the art can understand the contents of the present invention and implements accordingly, and protection of the invention can not be limited with this
Range.Any equivalent change or modification in accordance with the spirit of the invention should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of adjustable check valve of cracking pressure, including valve body (10) and the first spring being all set in the valve body (10)
(70) and spool (30) it, is provided with valve seat (15) in the valve body (10), first spring (70) pushes the spool (30)
Push against the valve seat (15), it is characterised in that: the valve body (10), which offers, adjusts mouth (14), the adjustable list of cracking pressure
It further include regulating device (80), second spring (71), the second regulating part (50) being threadedly coupled with adjusting mouth (14) to valve
And the first regulating part (60) being threadedly coupled with second regulating part (50), first spring (70) are set to the valve
Between core (30) and first regulating part (50).The second spring (71) is set to the spool (30) and described second and adjusts
It saves between part (60), rotatable first regulating part (50) of the regulating device (80) and second regulating part (60).
2. according to the adjustable check valve of cracking pressure described in claim 1, it is characterised in that: the regulating device (80) includes connecting
The connecting column (82) for connecing disk (81), being connected on the terminal pad (81), second regulating part (60) offer and the company
Connect the matching hole (62) of column (82) mating.
3. according to the adjustable check valve of cracking pressure described in claim 2, it is characterised in that: the regulating device (80) further includes
Be rotatably connected in the allen wrench (90) on the terminal pad (81), first regulating part (50) offer with it is described interior
The Hexagon hole (17) of die nut (90) cooperation.
4. according to the adjustable check valve of cracking pressure described in claim 2, it is characterised in that: the regulating device (80) further includes
The reinforcing column (84) being connected on the terminal pad (81).
5. according to the adjustable check valve of cracking pressure described in claim 1, it is characterised in that: the spool (30) offers receiving
The first accepting hole (33) of first spring (70) and the second accepting hole (34) for accommodating the second spring (71).
6. according to the adjustable check valve of cracking pressure described in claim 1, it is characterised in that: the first regulating part (50) setting
There is the first supporting surface (51) for supporting first spring (70), second regulating part (60) is provided with support second bullet
The second supporting surface (61) of spring (71).
7. according to the adjustable check valve of cracking pressure described in claim 1, it is characterised in that: the elasticity of first spring (70)
Coefficient is different from the coefficient of elasticity of the second spring (71).
8. according to the adjustable check valve of cracking pressure described in claim 7, it is characterised in that: the elasticity of first spring (70)
Coefficient is less than the coefficient of elasticity of the second spring (71).
9. according to the adjustable check valve of cracking pressure described in claim 1, it is characterised in that: the valve body (10) further includes into water
Mouth (11), the water inlet (11) and the adjusting mouth (13) are coaxially set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811065646.2A CN108980421A (en) | 2018-09-12 | 2018-09-12 | A kind of adjustable check valve of cracking pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811065646.2A CN108980421A (en) | 2018-09-12 | 2018-09-12 | A kind of adjustable check valve of cracking pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108980421A true CN108980421A (en) | 2018-12-11 |
Family
ID=64546084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811065646.2A Pending CN108980421A (en) | 2018-09-12 | 2018-09-12 | A kind of adjustable check valve of cracking pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108980421A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201236974Y (en) * | 2008-07-22 | 2009-05-13 | 宁波星箭航天机械厂 | Non-return valve |
| KR20110039628A (en) * | 2009-10-12 | 2011-04-20 | 장해철 | Pressure control 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 |
| CN203743543U (en) * | 2014-01-16 | 2014-07-30 | 浙江众博矿业机械有限公司 | High-pressure safety 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 CN201811065646.2A patent/CN108980421A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201236974Y (en) * | 2008-07-22 | 2009-05-13 | 宁波星箭航天机械厂 | Non-return valve |
| KR20110039628A (en) * | 2009-10-12 | 2011-04-20 | 장해철 | Pressure control 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 |
| CN203743543U (en) * | 2014-01-16 | 2014-07-30 | 浙江众博矿业机械有限公司 | High-pressure safety 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181211 |
|
| RJ01 | Rejection of invention patent application after publication |