CN203856792U - Deflector type shock-absorption relief valve - Google Patents
Deflector type shock-absorption relief valve Download PDFInfo
- Publication number
- CN203856792U CN203856792U CN201420271668.5U CN201420271668U CN203856792U CN 203856792 U CN203856792 U CN 203856792U CN 201420271668 U CN201420271668 U CN 201420271668U CN 203856792 U CN203856792 U CN 203856792U
- Authority
- CN
- China
- Prior art keywords
- spring
- relief valve
- spool
- seat
- type shock
- 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 - Lifetime
Links
- 238000010521 absorption reaction Methods 0.000 title abstract 3
- 230000035939 shock Effects 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 239000000945 filler Substances 0.000 claims description 10
- 238000013459 approach Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 238000013016 damping Methods 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Safety Valves (AREA)
- Servomotors (AREA)
Abstract
The utility model relates to a deflector type shock-absorption relief valve, mainly overcoming limitation caused by its own structure. The deflector type shock-absorption relief valve comprises a valve seat, a screw barrel, a valve spool and a spring. The valve seat is provided with an oil inlet, and the screw barrel is provided with an oil outlet. The lower end of the valve spool is in slide fit with the inner wall of the valve seat. The lower end surface of the valve spool serves as a first oil pressure bearing surface which forms a first oil pressure reacting cavity with the inner wall of the valve seat. The upper end of the valve spool forms a lower base of the spring, and the upper end surface of the lower base of the spring contacts with the spring. The lower end surface, opposite to the valve seat, of the lower base of the spring is provided with a groove with a downward opening, thus a second oil pressure reacting cavity is formed. The second oil pressure bearing cavity applies an upwards force to the spring so as to expand the opening area of the relief valve and further improve flow capacity thereof. Besides, a circular gap formed between the lower end of the valve spool and the inner wall of the valve seat provides a proper damping action to solve problems such as shaking and abnormal noises on the condition of high relief flow, and accordingly oil pressure fluctuation is stabilized.
Description
Technical field
The utility model relates to a kind of relief valve, particularly a kind of water conservancy diversion disc type shock absorbing relief valve.
Background technique
Relief valve is a kind of conventional hydraulic control valve in hydraulic system, it can be used for controlling on main oil way of hydraulic system the maximum pressure of hydraulic system, also on can for example, working oil path for certain hydraulic actuator (oil hydraulic cylinder), to control the working pressure of this actuator.Relief valve is mainly divided into water conservancy diversion disc type shock absorbing relief valve and pilot operated compound relief valve, wherein water conservancy diversion disc type shock absorbing relief valve has simple in structure, processing cost is lower, the advantage such as be active in one's movements, but existing water conservancy diversion disc type shock absorbing relief valve structure due to self in application has some limitations.
Model utility content
The deficiency having some limitations due to self structure in order to overcome water conservancy diversion disc type shock absorbing relief valve, the utility model provides a kind of water conservancy diversion disc type shock absorbing relief valve.
The technological scheme that the utility model adopts is: a kind of water conservancy diversion disc type shock absorbing relief valve, it comprises the valve seat with filler opening, the swivel nut with oil outlet, spool, spring, described valve seat and swivel nut form the cavity volume of built-in spool and spring, described spool lower end forms slippage with valve base inner wall and coordinates, described spool lower end surface is the first oil keeper pressure surface, described the first oil keeper pressure surface and valve base inner wall form the first oil pressure reaction chamber, described spool upper end forms spring lower seat, this spring lower seat upper-end surface and spring contact, the lower end surface that this spring lower seat is relative with valve seat has downward opening groove, form the second oil pressure reaction chamber, described spring by spring lower seat and spring seat of honour inlay card in swivel nut.
In the middle of described spool, be frustum, its side is the conical surface, by the conical surface and the cooperation of valve seat, controls being communicated with and disconnection of filler opening and oil outlet.
Described groove comprises the first acting surface extending along the spool conical surface, keeps the second acting surface of horizontal parallel and the 3rd acting surface that lower end tilts laterally, and described first, second, third acting surface is smoothly connected successively, forms the second oil keeper pressure surface.
Described spring lower seat comprises diversion disk and round platform.
Described diversion disk and round platform are split-type structural, and described diversion disk is socketed on round platform, and spacing by round platform support, form spool and drive and on diversion disk, move or diversion disk band movable valve plug moves down is linked.
Described diversion disk and round platform are integral type structure.
Described spool lower end forms slippage with valve base inner wall and coordinates, and has the annular space of 0.06-0.08mm between both surface of contact.
Described oil outlet is opened in one end that swivel nut contacts with valve seat.
Described filler opening is opened in one end that valve seat approaches swivel nut obliquely, and perpendicular to the conical surface of spool.
Also comprise adjustable lever, adjustable lever is connected with the spring seat of honour through swivel nut, and fastening by locking nut.
The described spring seat of honour is provided with seal ring.
The beneficial effects of the utility model are: water conservancy diversion disc type shock absorbing relief valve has increased groove, form the second oil keeper pressure surface and the second oil pressure reaction chamber, the second oil pressure reaction chamber has produced the power making progress to spring, accelerated the speed of response of spring, increased the decrement of spring, thereby increased the opening area of relief valve, and then increased the through-current capability of relief valve; Spool lower end and valve base inner wall exist suitable annular space that suitable damping function is provided, eliminate vibrations, have solved the problems such as the shake of relief valve under larger flow, abnormal sound, thereby have stablized pressure fluctuation.
Accompanying drawing explanation
Fig. 1 is overall schematic of the present utility model.
Fig. 2 is the partial schematic diagram that the utility model and other hydrovalves are worked good after installing.
Fig. 3 is the enlarged view of A in Fig. 1.
Fig. 4 is partial schematic diagram of the present utility model.
1-valve seat, 2-swivel nut, 21-the first oil pressure reaction chamber, 3-spool, 31-round platform, 32-frustum, the 321-conical surface, 322-the 3rd oil pressure reaction chamber, 4-spring, the 41-spring seat of honour, 42-spring lower seat, 5-filler opening, 51-oil inlet passage, 6-oil outlet, 61-oil discharge passage, 7-diversion disk, 71-groove, 711-the first acting surface, 712-the second acting surface, 713-the 3rd acting surface, 8-annular space, 9-seal ring, 91-red copper pad, 10-adjustable lever.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As Fig. 1, Fig. 2, shown in Fig. 3, a kind of water conservancy diversion disc type shock absorbing relief valve, it comprises the valve seat 1 with filler opening 5, the swivel nut 2 with oil outlet 6, spool 3, spring 4, described valve seat 1 and swivel nut 2 form the cavity volume of built-in spools 3 and spring 4, described spool 3 lower ends form slippage with valve seat 1 inwall and coordinate, described spool 3 lower end surfaces are the first oil keeper pressure surface, described the first oil keeper pressure surface and valve seat 1 inwall form the first oil pressure reaction chamber 21, in the middle of described spool 3, it is frustum 32, its side is the conical surface 321, by the conical surface 321 and the cooperation of valve seat 1, control being communicated with and disconnection of filler opening 5 and oil outlet 6, described spool 3 upper ends form spring lower seat 42, these spring lower seat 42 upper-end surfaces contact with spring 4, the lower end surface that this spring lower seat 42 is relative with valve seat 1 has downward opening groove 71, form the second oil pressure reaction chamber, described spring 4 by spring lower seat 42 with the spring seat of honour 41 inlay cards in swivel nut 2.Described groove 71 comprises the first acting surface 711 extending along spool 3 conical surfaces 321, keep the second acting surface 712 of horizontal parallel and the 3rd acting surface 713 that lower end tilts laterally, described first, second, third acting surface is smoothly connected successively, form the second oil keeper pressure surface, increased groove 71, form the second oil keeper pressure surface and the second oil pressure reaction chamber, increased the decrement of spring 4, thereby increase the through-current capability of water conservancy diversion disc type shock absorbing relief valve.
Described spool 3 lower ends form slippage with valve seat 1 inwall and coordinate, and have the annular space 8 of 0.06-0.08mm between both surface of contact, have reduced annular space 8, eliminate vibrations, have solved the problems such as shake, abnormal sound, thereby have stablized pressure fluctuation.
Described spring lower seat 42 comprises diversion disk 7 and round platform 31, described diversion disk 7 and round platform 31 can be integral structures, also can be split-type structural, when diversion disk 7 and round platform 31 employing split-type structurals, described diversion disk 7 is socketed on round platform 31, and spacing by round platform 31 supports, forming spool 3 drives and on diversion disks 7, moves or diversion disk 7 moves down with movable valve plug 3 is linked, when having reduced difficulty of processing, do not increase assembling difficulty, and can select according to actual needs the material of diversion disk 7 and spool 3.
Also comprise adjustable lever 10, adjustable lever 10 is connected with the spring seat of honour 41 through swivel nut 2, and fastening by locking nut.By adjustable lever 10, give 4 one pretightening forces of spring, make spring 4 produce the spring force of an expection, form contrast with oil pressure, to control spool, whether move up and down, form the working principle of relief valve.
The described spring seat of honour 41 is provided with seal ring 9, to guarantee the sealing of excessive direct-acting type stream valve inside.
As shown in Figure 2, because also coordinating with other hydrovalves to install, this water conservancy diversion disc type shock absorbing relief valve forms an integral body, the place contacting with other valve bodies at swivel nut 2 is equipped with seal ring 9, the place contacting with other valve bodies in valve seat 1 lower end surface is provided with red copper pad 91, to guarantee outside sealing, filler opening 5 is communicated with oil inlet passage 51, and oil outlet 6 is communicated with oil discharge passage 61, with integrant oil circuit.
Working principle:
Water conservancy diversion disc type shock absorbing relief valve is that the pressure oil in dependence system acts directly on spool 3 and balances each other with spring force etc., to control the switching motion of spool 3, relief valve is to utilize by governor pressure, as signal, to be changed the decrement of spring 4, thereby the change flow area of valve port and the spillway discharge of system reach level pressure object.When system pressure raises, spool 3 rises, and valve port flow area increases, and spillway discharge increases, and then system pressure is declined.Relief valve inside is the basic principle of its level pressure effect by the balance of spool 3 and this negative feedback of motion formation, is also the basic functional principle of all pressure fixing valves, that is:
As PS < F
ttime, valve port is closed;
As PS > F
ttime, valve port is about to open;
Now, PS=F
t=KX
0
P＝P
K?=K·X
0/S
As PS > F
ttime, valve port is opened, and plays voltage stabilizing overflow.
Wherein: total oil pressure that P-relief valve is suffered, S-oil keeper pressure surface area, F
tthe total elastic force of-spring, K-device of spring stiffness coefficient, X
0-spring total displacement amount.
As shown in Figure 1, Figure 2, Figure 4 shows, in the utility model,
Water conservancy diversion disc type shock absorbing relief valve is by the first oil pressure reaction chamber 21, the common power upwards that produces of the second oil pressure reaction chamber (being groove 71) and the 3rd oil pressure reaction chamber 322;
The area of contour of spool 3 lower end surfaces on horizontal plane forms the first oil keeper pressure surface area S
1, the area of contour of groove 71 on horizontal plane form the second oil keeper pressure surface area S
2form the 3rd oil keeper pressure surface area (S with the poor area of contour on horizontal plane of cross section up and down of frustum 32
4-S
3).
While not increasing groove 71, described water conservancy diversion disc type shock absorbing relief valve bears oil pressure formula:
P·S=P
1·S
1＋P
3·（S
4－S
3）=F
T
Increase after groove 71, spring more than 4 bears a P
2s
2power, described water conservancy diversion disc type shock absorbing relief valve bears oil pressure formula:
P
1·S
1＋P
3·（S
4－S
3）＋P
2·S
2=?F
T
Wherein: P
1the oil pressure that the-the first oil keeper pressure surface bears, S
1the-the first oil keeper pressure surface area, P
2the oil pressure that the-the second oil keeper pressure surface bears, S
2the-the second oil keeper pressure surface area, P
3the oil pressure that the-the three oil keeper pressure surface bears, (S
4-S
3)-the 3rd oil keeper pressure surface area.
For example work as P=20MPa,
While not increasing groove 71, P
1+ P
3=20MPa.
Increase after groove 71 S
1(S
4-S
3) be constant, if will keep elastic force F
tconstant, because spring more than 4 bears a P
2s
2power, so (P
1+ P
3) < 20MPa.
Increase after groove 71 S
1(S
4-S
3) be constant, if will make P
1+ P
3=20MPa, because spring more than 4 bears a P
2s
2power, F
tby original [(P
1s
1)+P
3(S
4-S
3)] increase to [P
1s
1+ P
3(S
4-S
3)+P
2s
2], draw X
0by original [(P
1s
1)+P
3(S
4-S
3)]/K increases to [P
1s
1+ P
3(S
4-S
3)+P
2s
2]/K, so, the extending amount of spring 4 has increased, and has increased the distribution channel of pressure oil, thereby has increased the through-current capability of relief valve.
At relief valve, open moment, because the lower end surface of spring lower seat 42 is all very approaching with the distance of valve seat 1 distance, spring lower seat 42 and swivel nut 2, make the through-current capability of relief valve limited, thus the oil pressure P that the second oil keeper pressure surface bears
2can be very large, thus the oil pressure P bearing with the first oil keeper pressure surface
1give together very large upwarding pressure of spring, spring is fast-response very, upwards produces displacement, and the lower end surface of spring lower seat 42 and valve seat 1 distance are increased, thereby increases the through-current capability of direct current type relief valve.
Water conservancy diversion disc type shock absorbing relief valve is generally used for small flow occasion, be connected on the oil circuit in oil hydraulic pump outlet port, play overflow and pressure stabilization function, in Constant Pump System, the constant pressure that keeps hydraulic system, so the size of total oil pressure that relief valve is suffered has determined Applicable scope and the serviceability of this water conservancy diversion disc type shock absorbing relief valve, and the utility model has increased groove 71 newly, in the situation that meeting identical oil pressure, the decrement of spring 4 is larger, increase the distribution channel of pressure oil, thereby increased the through-current capability of relief valve.
Below described embodiment is only preferred implementation of the present utility model by reference to the accompanying drawings, and the not restriction to protection domain of the present utility model, any improvement of doing based on the utility model spirit all ought to be within the utility model protection domain.
Claims (10)
1. a water conservancy diversion disc type shock absorbing relief valve, it comprises the have filler opening valve seat (1) of (5), the swivel nut (2) with oil outlet (6), spool (3), spring (4), it is characterized in that: described valve seat (1) and swivel nut (2) form the cavity volume of built-in spool (3) and spring (4), described spool (3) lower end forms slippage with valve seat (1) inwall and coordinates, described spool (3) lower end surface is the first oil keeper pressure surface, described the first oil keeper pressure surface and valve seat (1) inwall form the first oil pressure reaction chamber (21), described spool (3) upper end forms spring lower seat (42), this spring lower seat (42) upper-end surface contacts with spring (4), the lower end surface that this spring lower seat (42) is relative with valve seat (1) has downward opening groove (71), form the second oil pressure reaction chamber, described spring (4) by spring lower seat (42) and the spring seat of honour (41) inlay card in swivel nut (2).
2. water conservancy diversion disc type shock absorbing relief valve according to claim 1, it is characterized in that: in the middle of described spool (3), be frustum (32), its side is the conical surface (321), by coordinating of the conical surface (321) and valve seat (1), controls being communicated with and disconnection of filler opening (5) and oil outlet (6).
3. water conservancy diversion disc type shock absorbing relief valve according to claim 2, it is characterized in that: described groove (71) comprises the first acting surface (711) extending along spool (3) conical surface (321), keep second acting surface (712) of horizontal parallel and the 3rd acting surface (713) that lower end tilts laterally, described first, second, third acting surface is smoothly connected successively, forms the second oil keeper pressure surface.
4. water conservancy diversion disc type shock absorbing relief valve according to claim 1 and 2, is characterized in that: described spring lower seat (42) comprises diversion disk (7) and round platform (31).
5. water conservancy diversion disc type shock absorbing relief valve according to claim 4, it is characterized in that: described diversion disk (7) and round platform (31) are split-type structural, described diversion disk (7) is socketed on round platform (31), and spacing by round platform support, form spool (3) and drive and on diversion disk (7), move or diversion disk (7) band movable valve plug (3) moves down is linked.
6. water conservancy diversion disc type shock absorbing relief valve according to claim 4, is characterized in that: described diversion disk (7) and round platform (31) are integral type structure.
7. water conservancy diversion disc type shock absorbing relief valve according to claim 1 and 2, is characterized in that: described spool (3) lower end forms slippage with valve seat (1) inwall and coordinates, and has the annular space (8) of 0.06-0.08mm between both surface of contact.
8. water conservancy diversion disc type shock absorbing relief valve according to claim 1 and 2, is characterized in that: described oil outlet (6) is opened in one end that swivel nut (2) contacts with valve seat (1).
9. water conservancy diversion disc type shock absorbing relief valve according to claim 2, is characterized in that: described filler opening (5) is opened in one end that valve seat (1) approaches swivel nut (2) obliquely, and perpendicular to the conical surface (321) of spool (3).
10. water conservancy diversion disc type shock absorbing relief valve according to claim 1 and 2, is characterized in that: also comprise adjustable lever (10), adjustable lever (10) is connected with the spring seat of honour (41) through swivel nut (2), and fastening by locking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271668.5U CN203856792U (en) | 2014-05-26 | 2014-05-26 | Deflector type shock-absorption relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271668.5U CN203856792U (en) | 2014-05-26 | 2014-05-26 | Deflector type shock-absorption relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856792U true CN203856792U (en) | 2014-10-01 |
Family
ID=51606646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420271668.5U Expired - Lifetime CN203856792U (en) | 2014-05-26 | 2014-05-26 | Deflector type shock-absorption relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856792U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061417A (en) * | 2017-06-19 | 2017-08-18 | 太仓市宇航造纸机械厂 | A kind of overflow valve |
| CN107061813A (en) * | 2017-06-19 | 2017-08-18 | 太仓市宇航造纸机械厂 | A kind of valve |
| CN107100915A (en) * | 2017-06-19 | 2017-08-29 | 太仓市宇航造纸机械厂 | A kind of structure of relief valve |
| CN107166050A (en) * | 2017-06-19 | 2017-09-15 | 太仓市宇航造纸机械厂 | A kind of valve arrangement |
| CN107314136A (en) * | 2017-06-19 | 2017-11-03 | 太仓市宇航造纸机械厂 | A kind of safety valve |
| CN108167253A (en) * | 2017-12-27 | 2018-06-15 | 邵立坤 | Buffer overflow valve |
| CN112145494A (en) * | 2020-10-09 | 2020-12-29 | 山东大学 | Ultrahigh-pressure overflow valve driven by servo motor and working method thereof |
| CN114396497A (en) * | 2021-12-31 | 2022-04-26 | 浙江大学温州研究院 | Passive micro valve with constant flow output and method thereof |
| CN114837751A (en) * | 2022-04-28 | 2022-08-02 | 中国航发南方工业有限公司 | Method and device for installing flow guide disc |
-
2014
- 2014-05-26 CN CN201420271668.5U patent/CN203856792U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061417A (en) * | 2017-06-19 | 2017-08-18 | 太仓市宇航造纸机械厂 | A kind of overflow valve |
| CN107061813A (en) * | 2017-06-19 | 2017-08-18 | 太仓市宇航造纸机械厂 | A kind of valve |
| CN107100915A (en) * | 2017-06-19 | 2017-08-29 | 太仓市宇航造纸机械厂 | A kind of structure of relief valve |
| CN107166050A (en) * | 2017-06-19 | 2017-09-15 | 太仓市宇航造纸机械厂 | A kind of valve arrangement |
| CN107314136A (en) * | 2017-06-19 | 2017-11-03 | 太仓市宇航造纸机械厂 | A kind of safety valve |
| CN108167253A (en) * | 2017-12-27 | 2018-06-15 | 邵立坤 | Buffer overflow valve |
| CN112145494A (en) * | 2020-10-09 | 2020-12-29 | 山东大学 | Ultrahigh-pressure overflow valve driven by servo motor and working method thereof |
| CN114396497A (en) * | 2021-12-31 | 2022-04-26 | 浙江大学温州研究院 | Passive micro valve with constant flow output and method thereof |
| CN114396497B (en) * | 2021-12-31 | 2024-05-24 | 浙江大学温州研究院 | Passive micro valve with constant flow output and method thereof |
| CN114837751A (en) * | 2022-04-28 | 2022-08-02 | 中国航发南方工业有限公司 | Method and device for installing flow guide disc |
| CN114837751B (en) * | 2022-04-28 | 2023-11-03 | 中国航发南方工业有限公司 | Method and device for installing guide disc |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141001 |