CN203614836U - Direct-acting overflow valve - Google Patents
Direct-acting overflow valve Download PDFInfo
- Publication number
- CN203614836U CN203614836U CN201320666867.1U CN201320666867U CN203614836U CN 203614836 U CN203614836 U CN 203614836U CN 201320666867 U CN201320666867 U CN 201320666867U CN 203614836 U CN203614836 U CN 203614836U
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- pressure adjusting
- spring
- valve
- valve body
- direct
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- 239000000945 filler Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Abstract
The utility model discloses a direct-acting overflow valve, relates to the field of flow control, and solves the problem that pressure adjusting scope of an existing overflow valve is small. The overflow valve comprises a valve body, a valve element component and a pressure adjusting mechanism, wherein the valve element component and the pressure adjusting mechanism are located in the valve body, an oil inlet and an oil overflow port are formed in the front end of the valve body, and the valve element component comprises a valve element and a valve seat; the pressure adjusting mechanism comprises a pressure adjusting spring and a pressure adjusting screw, wherein the pressure adjusting spring and the pressure adjusting screw are arranged in the valve body, the pressure adjusting spring is formed by nesting seven springs, and the lengths of the seven springs are sequentially increased; one ends of the springs and the valve seat are fixed, and the other ends of the springs are toward the pressure adjusting screw; one end of the longest spring is movably connected with the pressure adjusting screw, the pressure adjusting screw penetrates through a seal cover at the rear end of the valve body and is connected with the seal cover in a threaded way, and one end of the pressure adjusting screw is provided with a hand wheel; the pressure adjusting screw can be driven to compress the pressure adjusting spring by rotating the hand wheel, and the seven pressure levels of the overflow valve can be realized by applying different pre-stresses through the nested springs, so that the pre-compression of the pressure adjusting spring can be improved, the pressure adjusting scope can be expanded, the using scope is wider, and the adaptability is stronger.
Description
Technical field
The utility model relates to flow control field, is specifically related to a kind of range of regulation wide, uses range higher, the direct-acting overflow valve that adaptability is stronger.
Background technique
The function of relief valve is by valve port overflow, makes the pressure in controlled system or loop keep stable, realizes the effect of voltage stabilizing, pressure regulation or pressure limiting.According to structure, relief valve has two kinds of direct-acting type and leading types, for direct-acting overflow valve, when pressure is higher, flow is when larger, requires pressure adjusting spring to have very large rigidity, adjusting function is poor, and the leakage of guiding valve also makes high voltage control be difficult to realize, therefore can only be used for low-pressure low flow occasion.Therefore, pressure regulation range is the important performance indexes of relief valve, and conventionally, the range size of relief valve institute pilot pressure is to be determined by the rigidity of spring and pre compressed magnitude, but, due to the restriction of valve body structure and spring performance, the pre compressed magnitude of a spring can not unrestrictedly increase, therefore, the range of regulation that adopts traditional relief valve of this structure is all conditional, thus, caused relief valve to use range low, the defect of bad adaptability.
Model utility content
The defect existing in order to solve above-mentioned technology, the utility model provides a kind of range of regulation wide, uses range higher, the direct-acting overflow valve that adaptability is stronger.
The utility model is realized the technological scheme that above-mentioned technique effect adopts:
A kind of direct-acting overflow valve, comprise valve body, be positioned at mangetic core assembly and the pressure-regulating device of described valve body, the front end of described valve body is provided with filler opening and oil spilling mouth, the valve seat that described mangetic core assembly comprises spool and offsets with described spool, described pressure-regulating device comprises the pressure adjusting spring and the screw press that are located in described valve body, wherein, described pressure adjusting spring is the spring that at least two length increase successively and nest together, described spring one end is connected with described valve seat, and the other end is connected with described screw press.
Above-mentioned a kind of direct-acting overflow valve, described screw press runs through the sealing cover of described valve rear end and is threaded with it, and one end that described screw press stretches into described valve body is socketed with spring seat, and the other end of described screw press is provided with handwheel.
Above-mentioned a kind of direct-acting overflow valve, in described pressure adjusting spring, one end of each spring is all fixed with described valve seat, and the other end is towards described screw press.
Above-mentioned a kind of direct-acting overflow valve, one end and the described spring seat of the spring that in described spring, length is the longest fix.
Above-mentioned a kind of direct-acting overflow valve, described pressure adjusting spring is seven springs that length increases successively and nests together.
Above-mentioned a kind of direct-acting overflow valve, described spool is located at the connectivity part between described filler opening and described oil spilling mouth.
Above-mentioned a kind of direct-acting overflow valve, the front end of described valve body is provided with the pin for limiting described spool stroke.
Above-mentioned a kind of direct-acting overflow valve, the joining place of described sealing cover and described valve body is provided with seal ring.
The beneficial effects of the utility model are: this direct-acting overflow valve adopt some length to increase progressively successively and the spring of nested cooperation as pressure adjusting spring, increase the pre compressed magnitude of pressure adjusting spring, make the pretightening force of pressure adjusting spring obtain echelon enhancing, seven pressure ranks of relief valve are realized, expand range of regulation, use range higher, adaptability is stronger.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1-valve body, 2-spool, 3-sealing cover, 4-handwheel, 5-screw press, 6-pressure adjusting spring, 7-valve seat, 8-spring seat, 9-filler opening, 10-oil spilling mouth, 11-pin.
Embodiment
For making that the utility model is had to further understanding, below with reference to Figure of description and specific embodiment, the utility model is described in further detail:
Shown in Fig. 1, a kind of direct-acting overflow valve, comprise valve body 1, be positioned at mangetic core assembly and the pressure-regulating device of valve body 1, the front end of valve body 1 is provided with filler opening 9 and oil spilling mouth 10, the valve seat 7 that mangetic core assembly comprises spool 2 and offsets with spool 2, spool 2 is located at the connectivity part between filler opening 9 and oil spilling mouth 10, the circulation of change control liquid oil by its station from filler opening 9 to oil spilling mouth 10, pressure-regulating device comprises the pressure adjusting spring 6 and the screw press 5 that are located in valve body 1, wherein, pressure adjusting spring 6 is at least two springs that length increases successively and nests together, spring one end is connected with valve seat 7, the other end is connected with screw press 5.As preferred embodiment of the present utility model, pressure adjusting spring 6 is seven springs that length increases successively and nests together.
When enforcement, screw press 5 runs through the sealing cover 3 of valve body 1 rear end and is threaded with it, and one end that screw press 5 stretches into valve body 1 is socketed with spring seat 8, and spring seat 8 is fixed on sealing cover 3 and can relative sliding with screw press 5, and spring seat 8 is provided with boss.The other end of screw press 5 is provided with handwheel 4, clockwise rotates handwheel 4 and can drive screw press 5 to move right in valve body 1, rotates counterclockwise handwheel 4 and can drive screw press 5 to be moved to the left in valve body 1.In order to make the movement of screw press 5 more smooth and easy flexibly, not blocked by the friction of pressure adjusting spring 6, in pressure adjusting spring 6, one end of each spring is all fixedly connected with valve seat 7, the other end is all towards screw press 5, wherein, one end of the spring that in each spring, length is the longest is socketed on the boss of spring seat 8, fixes with spring seat 8.Because of can relative sliding between spring seat 8 and screw press 5, and spring seat 8 be fixed on sealing cover 3, therefore rotating handwheel 4 while driving screw press 5 move forward or retreat, can not cause transverse warping to pressure adjusting spring 6.
Further, when enforcement, de-for preventing that oil pressure from crossing ambassador's spool 2 punching, cause hydraulic pressure accident or device damage, the front end of valve body 1 is provided with the pin 11 for limiting spool 2 strokes.In the time that spool 2 is washed open by excessive hydraulic pressure, pin 11 can block the protruding part of spool 2 ends, and the stroke of spool 2 is terminated in safety range.Meanwhile, for guaranteeing the tightness of relief valve, the joining place of sealing cover 3 and valve body 1 is provided with seal ring.
The working principle of this direct-acting overflow valve is:
Under original state, in pressure adjusting spring 6, the longest spring of length keeps certain pre compressed magnitude, its pretightening force make valve seat 7 tightly prop up spool 2 to the right, spool 2 is closed, and filler opening 9 and oil spilling mouth 10 on valve body 1 are cut off mutually, relief valve does not play pressure regulation effect.Along with the continuous rising of filler opening 9 pressure, in the time that spool 2 right side hydraulic couplings are greater than the pretightening force of pressure adjusting spring 6, spool 2 is moved to the left, spool 2 is opened, conducting between filler opening 9 and oil spilling mouth 10, unnecessary fluid, from the excessive oil sump tank of oil spilling mouth 10, makes the pressure stability at filler opening 9 places on setting.In the hydraulic control system that need to be applied to different pressures rank time, handwheel 4 on rotatable screw press 5, in the time of the larger pressore setting of needs, clockwise rotate handwheel 4, screw press 5 is moved right, next stage spring is formed to extruding, make next stage spring produce pretightening force, by the pretightening force stack of multistage spring, strengthen the pretightening force that spool 2 need to overcome, strengthen the pressore setting of relief valve.In the time of the less pressore setting of needs, rotate counterclockwise handwheel 4, screw press 5 is moved to the left, reduce the pre compressed magnitude of spring, the pretightening force that spool 2 need to be overcome has obtained weakening, has reduced the pressore setting of relief valve.
This direct-acting overflow valve adopt some length to increase progressively successively and the spring of nested cooperation as pressure adjusting spring, increase the pre compressed magnitude of pressure adjusting spring, make the pretightening force of pressure adjusting spring obtain echelon enhancing, seven pressure ranks of relief valve are realized, make the pressore setting of relief valve realize multi-level setting, expanded range of regulation, used range higher, adaptability is stronger.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and specification, describe is principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications; these changes and improvements all fall in claimed scope of the present utility model, and the protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (6)
1. a direct-acting overflow valve, comprise valve body, be positioned at mangetic core assembly and the pressure-regulating device of described valve body, the front end of described valve body is provided with filler opening and oil spilling mouth, the valve seat that described mangetic core assembly comprises spool and offsets with described spool, described pressure-regulating device comprises the pressure adjusting spring and the screw press that are located in described valve body, it is characterized in that, described pressure adjusting spring is the spring that at least two length increase successively and nest together, described spring one end is connected with described valve seat, and the other end is connected with described screw press.
2. a kind of direct-acting overflow valve according to claim 1, it is characterized in that, described screw press runs through the sealing cover of described valve rear end and is threaded with it, and one end that described screw press stretches into described valve body is socketed with spring seat, and the other end of described screw press is provided with handwheel.
3. a kind of direct-acting overflow valve according to claim 1, is characterized in that, in described pressure adjusting spring, one end of each spring is all fixed with described valve seat, and the other end is towards described screw press.
4. according to a kind of direct-acting overflow valve described in claim 1 or 3, it is characterized in that, one end and the described spring seat of the spring that in described spring, length is the longest fix.
5. according to a kind of direct-acting overflow valve described in claim 1 or 3, it is characterized in that, described pressure adjusting spring is seven springs that length increases successively and nests together.
6. a kind of direct-acting overflow valve according to claim 1, is characterized in that, described spool is located at the connectivity part between described filler opening and described oil spilling mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320666867.1U CN203614836U (en) | 2013-10-25 | 2013-10-25 | Direct-acting overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320666867.1U CN203614836U (en) | 2013-10-25 | 2013-10-25 | Direct-acting overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614836U true CN203614836U (en) | 2014-05-28 |
Family
ID=50767483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320666867.1U Expired - Fee Related CN203614836U (en) | 2013-10-25 | 2013-10-25 | Direct-acting overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614836U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810687A (en) * | 2020-06-15 | 2020-10-23 | 徐兴勇 | Pressure relief direct-acting overflow valve |
-
2013
- 2013-10-25 CN CN201320666867.1U patent/CN203614836U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810687A (en) * | 2020-06-15 | 2020-10-23 | 徐兴勇 | Pressure relief direct-acting overflow valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20151025 |
|
| EXPY | Termination of patent right or utility model |