CN203797013U - Pressure reducing valve for brake - Google Patents
Pressure reducing valve for brake Download PDFInfo
- Publication number
- CN203797013U CN203797013U CN201420208816.9U CN201420208816U CN203797013U CN 203797013 U CN203797013 U CN 203797013U CN 201420208816 U CN201420208816 U CN 201420208816U CN 203797013 U CN203797013 U CN 203797013U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- spool
- oil outlet
- pressure
- 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
- 230000009467 reduction Effects 0.000 claims description 36
- 239000000945 filler Substances 0.000 claims description 14
- 238000010586 diagram Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 230000006837 decompression Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model discloses a pressure reducing valve for a brake and solves the problem that a brake connected with an existing pressure reducing valve is prone to being damaged due to the fact that the existing pressure reducing valve is low in opening speed. The pressure reducing valve comprises a valve body and a spring seat, a valve seat, a valve core and a spring are arranged in the valve body, one end of the spring is arranged in the sprig seat while the other end of the same is abutted against the valve core, a valve seat oil inlet and a valve seat oil outlet used for being communicated with the brake are arranged on the valve seat, the valve core is arranged in the valve seat and slidably matched with the same, a valve core oil incoming hole and a valve core oil outgoing hole communicated with the same are formed in the valve core, the valve core oil incoming hole corresponds to the valve seat oil inlet, and the valve core oil outgoing hole is provided with a closed first position and a second position communicated with the valve seat oil outlet. An outlet of the pressure reducing valve can be opened only when pressure of oil fed into the pressure reducing valve reaches a certain pressure value by means of reversing, so that pressure range of an inlet of the brake is guaranteed, and damage to the brake is avoided.
Description
Technical field
The utility model relates to a kind of reduction valve, is specifically related to a kind of break reduction valve.
Background technique
Reduction valve is by regulating, inlet pressure being reduced to the outlet pressure of a certain needs, and rely on the energy of medium itself, makes outlet pressure automatically keep stable valve.From hydromechanical viewpoint, reduction valve is a throttle element that local resistance can change, by changing orifice size, the kinetic energy of flow velocity and fluid is changed, cause the different pressure losses, thereby reach the object of decompression, then rely on the adjusting of controlling with regulating system, fluctuation and the spring force of downstream pressure are balanced each other, make downstream pressure keep constant in certain margin of error.With reduction valve, the outlet pressure for reduction valve there are certain requirements break, and the excessive break of outlet pressure can not bear; If outlet pressure is low, break is opened not exclusively, can produce friction and burn out.Existing reduction valve is generally outlet and often opens, outlet pressure slowly raises along with passing into the rising of oil pressure, when passing into oil pressure and being elevated to, when pressing, the setting of reduction valve plays decompression, decompression is to set pressure, often make the break being attached thereto burn out, therefore need to a kind ofly pass into the normally closed reduction valve of outlet that just makes reduction valve open when oil pressure reaches certain pressure value.
Summary of the invention
For solving the characteristic that in background technique, existing reduction valve is often opened, the problem that pressure needs certain process is built in outlet, and the utility model provides a kind of break reduction valve.
The technical solution of the utility model is: a kind of break reduction valve, comprise valve body and spring seat, in described valve body, be provided with valve seat, spool and spring, the interior the other end of spring seat is located in described spring one end and spool offsets, described valve seat is provided with valve seat filler opening and the valve seat oil outlet for being connected with break, described spool is located in valve seat and is coordinated with valve seat slippage, the spool oil outlet that described spool is provided with spool oil inlet hole and is connected with spool oil inlet hole, described spool oil inlet hole is corresponding with valve seat filler opening, the second place that described spool oil outlet has closed primary importance and is connected with valve seat oil outlet.
As a kind of improvement of the present utility model, described valve body is provided with pressure relief opening, and described pressure relief opening is connected with valve seat oil outlet.
As further improvement of the utility model, described spool is provided with shoulder block, and described shoulder block and valve base inner wall fit, and described shoulder block is provided with the pressure release passage that pressure relief opening is connected with valve seat oil outlet.
As further improvement of the utility model, described spool is provided with step, and described step is corresponding with valve seat oil outlet, and described step is provided with the throttling passage that pressure relief opening is connected with valve seat oil outlet.
As further improvement of the utility model, described spool is provided with containing groove, and described containing groove is connected with spool oil inlet hole, and the width of described containing groove is greater than the diameter of valve seat filler opening.
As further improvement of the utility model, described spool is provided with circular groove, and described circular groove is connected with spool oil outlet, and the width of described circular groove is less than the diameter of valve seat oil outlet.
The beneficial effects of the utility model are, reduction valve is arranged to export normally off, mode by commutation just makes reduction valve outlet open while making oil pressure that reduction valve passes into reach certain pressure value, thereby guarantees the pressure range of break entrance, avoids the damage of break.And the utility model also have simple in structure, easy to assembly, the advantage that more can be consistent with the special operation condition of break.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model embodiment's structural representation.
Accompanying drawing 2 is the structural representation of spool 4 in accompanying drawing 1.
Accompanying drawing 3 is the plan view of accompanying drawing 2.
Accompanying drawing 4 is the half sectional view of accompanying drawing 2.
Accompanying drawing 5 is the utility model embodiment's hydraulic schematic diagram.
Accompanying drawing 6 is the pressure diagram schematic diagram of the utility model and existing reduction valve.
In figure, 1, valve body; 11, pressure relief opening; 2, spring seat; 3, valve seat; 31, valve seat filler opening; 32, valve seat oil outlet; 4, spool; 41, spool oil inlet hole; 42, spool oil outlet; 43, shoulder block; 431, pressure release passage; 44, step; 441, throttling passage; 45, containing groove; 46, circular groove; 5, spring.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
By Fig. 1 in conjunction with Fig. 2, 3, 4, 5, shown in 6, a kind of break reduction valve, comprise valve body 1 and spring seat 2, in described valve body 1, be provided with valve seat 3, spool 4 and spring 5, described spring 5 one end are located at the interior the other end of spring seat 2 and spool 4 offsets, described valve seat 3 is provided with valve seat filler opening 31 and the valve seat oil outlet 32 for being connected with break, described spool 4 is located in valve seat 3 and is coordinated with valve seat 3 slippages, the spool oil outlet 42 that described spool 4 is provided with spool oil inlet hole 41 and is connected with spool oil inlet hole 41, described spool oil inlet hole 41 is corresponding with valve seat filler opening 31, the second place that described spool oil outlet 42 has closed primary importance and is connected with valve seat oil outlet 32.The beneficial effects of the utility model are, reduction valve is arranged to export normally off, mode by commutation just makes reduction valve outlet open while making oil pressure that reduction valve passes into reach certain pressure value, thereby guarantees the pressure range of break entrance, avoids the damage of break.And the utility model also have simple in structure, easy to assembly, the advantage that more can be consistent with the special operation condition of break.
Described valve body 1 is provided with pressure relief opening 11, and described pressure relief opening 11 is connected with valve seat oil outlet 32.Specifically, described spool 4 is provided with shoulder block 43, and described shoulder block 43 fits with valve seat 3 inwalls, and described shoulder block 43 is provided with the pressure release passage 431 that pressure relief opening 11 is connected with valve seat oil outlet 32.In particular, described spring and the shoulder block on spool offset.Specifically, described spool 4 is provided with step 44, and described step 44 is corresponding with valve seat oil outlet 32, and described step 44 is provided with the throttling passage 441 that pressure relief opening 11 is connected with valve seat oil outlet 32.Such structure can play good dynamic throttling effect, the setting that particularly spool is topped bar, along with the motion of spool, on step, the relative position of throttling passage and valve seat oil outlet can be adjusted, thereby play the effect of adjustable throttle valve, improved the dynamic performance of reduction valve.
Described spool 4 is provided with containing groove 45, and described containing groove 45 is connected with spool oil inlet hole 41, and the width of described containing groove 45 is greater than the diameter of valve seat filler opening 31.Specifically, described spool 4 is provided with circular groove 46, and described circular groove 46 is connected with spool oil outlet 42, and the width of described circular groove 46 is less than the diameter of valve seat oil outlet 32.The width of containing groove is greater than the diameter of valve seat filler opening, be convenient to medium and flow in spool, and the width of circular groove is less than the diameter of valve seat oil outlet, is convenient to medium to flow out spool, plays quick unlatching reduction valve, can guarantee again that the outflow of medium is used simultaneously.
When medium flows in spool cavity through valve seat filler opening, spool oil inlet hole from P mouth, now, medium in spool backs down spring, spool is slippage in valve seat, spool oil outlet is communicated with valve seat oil outlet, medium can be fast communicated with break from P mouth, and by the mode of commutation, thereby while guaranteeing that reduction valve P mouth pressure medium reaches certain value, reduction valve goes out eloquence and can open fast.Now, because the width of containing groove on spool is greater than the diameter of valve seat filler opening, spool moves rear P mouth still can provide medium to spool by valve seat filler opening.And after spool moves, step and be located at the relative valve seat oil outlet motion of throttling passage on step, thus play the effect of adjustable throttle valve, guarantee that reduction valve outlet pressure is stable.In accompanying drawing 6, be 1. the pressure diagram in existing reduction valve outlet port, P is the pressure of the fashionable medium of MEDIA FLOW, and A is the outlet pressure medium pressure of break joint medium (with).2. be the utility model reduction valve at the pressure diagram at valve seat oil outlet place, P is the fashionable pressure medium of MEDIA FLOW, A for outlet pressure medium with the pressure of break joint medium.When the pressure of P mouth inflow reaches P1, reduction valve of the present utility model is opened fast, now exports pressure medium and slowly rises to P2 from P1, and the P1 value of selecting is 16bar conventionally, and P2 is 20bar.Certainly according to the actual needs, can select the spring of different elasticity coefficient, outlet pressure medium is adjusted.
Every technician's notice: although the utility model describes according to above-mentioned embodiment; but invention thought of the present utility model is not limited in this model utility; the repacking of any utilization inventive concept, all will include in this patent scope of patent protection.
Claims (6)
1. a break reduction valve, comprise valve body (1) and spring seat (2), in described valve body (1), be provided with valve seat (3), spool (4) and spring (5), described spring (5) one end is located at the interior the other end of spring seat (2) and spool (4) offsets, it is characterized in that: described valve seat (3) is provided with valve seat filler opening (31) and the valve seat oil outlet (32) for being connected with break, described spool (4) is located in valve seat (3) and is coordinated with valve seat (3) slippage, the spool oil outlet (42) that described spool (4) is provided with spool oil inlet hole (41) and is connected with spool oil inlet hole (41), described spool oil inlet hole (41) is corresponding with valve seat filler opening (31), the second place that described spool oil outlet (42) has closed primary importance and is connected with valve seat oil outlet (32).
2. break reduction valve according to claim 1, is characterized in that described valve body (1) is provided with pressure relief opening (11), and described pressure relief opening (11) is connected with valve seat oil outlet (32).
3. break reduction valve according to claim 2, it is characterized in that described spool (4) is provided with shoulder block (43), described shoulder block (43) fits with valve seat (3) inwall, and described shoulder block (43) is provided with the pressure release passage (431) that pressure relief opening (11) is connected with valve seat oil outlet (32).
4. according to the break reduction valve described in claim 2 or 3, it is characterized in that described spool (4) is provided with step (44), described step (44) is corresponding with valve seat oil outlet (32), and described step (44) is provided with the throttling passage (441) that pressure relief opening (11) is connected with valve seat oil outlet (32).
5. break reduction valve according to claim 1, it is characterized in that described spool (4) is provided with containing groove (45), described containing groove (45) is connected with spool oil inlet hole (41), and the width of described containing groove (45) is greater than the diameter of valve seat filler opening (31).
6. break reduction valve according to claim 1 or 5, it is characterized in that described spool (4) is provided with circular groove (46), described circular groove (46) is connected with spool oil outlet (42), and the width of described circular groove (46) is less than the diameter of valve seat oil outlet (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420208816.9U CN203797013U (en) | 2014-04-28 | 2014-04-28 | Pressure reducing valve for brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420208816.9U CN203797013U (en) | 2014-04-28 | 2014-04-28 | Pressure reducing valve for brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203797013U true CN203797013U (en) | 2014-08-27 |
Family
ID=51379225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420208816.9U Expired - Lifetime CN203797013U (en) | 2014-04-28 | 2014-04-28 | Pressure reducing valve for brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203797013U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286925A (en) * | 2016-08-17 | 2017-01-04 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of novel voltage stabilizing overflow valve |
| CN107676506A (en) * | 2017-10-30 | 2018-02-09 | 圣邦集团有限公司 | A kind of restriction adjustable type three-way flowrate valve |
| CN110220022A (en) * | 2019-05-13 | 2019-09-10 | 芜湖美的厨卫电器制造有限公司 | Safety valve and water heater |
-
2014
- 2014-04-28 CN CN201420208816.9U patent/CN203797013U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286925A (en) * | 2016-08-17 | 2017-01-04 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of novel voltage stabilizing overflow valve |
| CN106286925B (en) * | 2016-08-17 | 2018-11-16 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of novel voltage stabilizing overflow valve |
| CN107676506A (en) * | 2017-10-30 | 2018-02-09 | 圣邦集团有限公司 | A kind of restriction adjustable type three-way flowrate valve |
| CN107676506B (en) * | 2017-10-30 | 2024-04-23 | 圣邦集团有限公司 | Three-way flow valve with adjustable throttling port |
| CN110220022A (en) * | 2019-05-13 | 2019-09-10 | 芜湖美的厨卫电器制造有限公司 | Safety valve and water heater |
| CN110220022B (en) * | 2019-05-13 | 2023-08-25 | 芜湖美的厨卫电器制造有限公司 | Safety valve and water heater |
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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 |
Granted publication date: 20140827 |
|
| CX01 | Expiry of patent term |