CN207814070U - Bidirectional relief valve for protecting motor - Google Patents
Bidirectional relief valve for protecting motor Download PDFInfo
- Publication number
- CN207814070U CN207814070U CN201820164355.8U CN201820164355U CN207814070U CN 207814070 U CN207814070 U CN 207814070U CN 201820164355 U CN201820164355 U CN 201820164355U CN 207814070 U CN207814070 U CN 207814070U
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- Prior art keywords
- valve body
- valve
- mounting hole
- oil pocket
- oil
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 125000004122 cyclic group Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model is related to a kind of bidirectional relief valves for protecting motor, including valve body, oil pocket one and oil pocket two are provided in valve body, oil pocket one and oil pocket two are connected separately with fabrication hole one and fabrication hole two, the mounting hole one of connection oil pocket one and the mounting hole two for being connected to oil pocket two are provided on valve body, it is separately installed with overflow relief valve one and overflow relief valve two in mounting hole one and mounting hole two, overflow relief valve one and overflow relief valve two include safety valve body, screw press is set in the outer end centre bore of safety valve body, the inner end of screw press is equipped with relief piston, the inner end of relief piston is equipped with spring, the inner end of spring is equipped with safe spool, the inner end of safe spool is equipped with emergency valve seat.The utility model integrates two overflow relief valves by valve body, it is possible to reduce installation space, and a valve is lower than the cost of two valves, is in addition sealed by a seal ring between overflow relief valve and valve body, improves the sealing effect of valve, improves pressure-resistant quality.
Description
Technical field
The utility model belongs to overflow valve technical field, and in particular to a kind of bidirectional relief valve for protecting motor.
Background technology
With national economy and the rapid development of infrastructure, engineering machinery, handling machinery obtain extremely wide
Raising, rotating mechanism have been widely applied in general application in its field, and overflow valve is exactly to control liquid in raising, Rotary Loop
The key element of pressure motor work, in order to protect the positive and negative rotation of hydraulic motor, two hydraulic fluid port ends of present hydraulic motor to connect respectively
An individual event overflow valve is connect to carry out overflow, but two overflow valves do not only take up larger installation space, and cost is higher,
In addition overflow valve uses copper packing in the sealing structure of valve seat and valve body, and sealing effect is caused to reduce, increase assembly difficulty,
The probability of leakage of oil reduces reliability.
Utility model content
The purpose of this utility model is to provide a kind of bidirectional relief valve for protecting motor, and one-way overflow valve is in protection liquid
Occupancy installation space is larger when pressure motor and cost is higher, and in addition the sealing of valve seat and valve body is bad, and sealing effect is caused to reduce,
Increase assembly difficulty, leakage of oil probability, reduce the problem of reliability.
The utility model is used to protect the bidirectional relief valve of motor, including valve body, and oil pocket one and oil pocket are provided in valve body
Two, oil pocket one and oil pocket two are connected separately with fabrication hole one and fabrication hole two, and the mounting hole of connection oil pocket one is provided on valve body
One with the mounting hole two that is connected to oil pocket two, fabrication hole one and fabrication hole two are respectively communicated with mounting hole one and mounting hole two, mounting hole
One and mounting hole two in be separately installed with overflow relief valve one and overflow relief valve two, overflow relief valve one and overflow relief valve two
Including safety valve body, screw press is set in the outer end centre bore of safety valve body, the inner end of screw press is equipped with relief piston,
The inner end of relief piston is equipped with spring, and the inner end of spring is equipped with safe spool, and the inner end of safe spool is equipped with emergency valve seat, safety
It is equipped with sealing ring between valve body and valve body, the first oil inlet, the second oil inlet, the first oil outlet and second are additionally provided on valve body
Oil outlet.
The valve body is mounted on by bolt on hydraulic motor, and the first oil outlet and the second oil outlet are respectively communicated with hydraulic pressure horse
On the hydraulic fluid port one and hydraulic fluid port two reached, and the first oil outlet and the second oil outlet are provided with O-ring.It is easier for installation quick.
The sealing ring is sleeved on outside safety valve body, and sealing ring is internally provided with stepped hole, the ladder connection of stepped hole
Place is a conical surface, and the conical surface is matched with the conical surface of safety valve body periphery, the aperture of the periphery and valve body mounting hole of sealing ring
Place is provided with mutually matched sealing cone.The sealing effect for improving valve improves pressure-resistant quality.
The taper of the sealing cone is 45 degree, and sealing ring is made using fluorubber material.
Compared with prior art, the utility model has the advantage of：
Integrate two overflow relief valves by valve body, it is possible to reduce installation space, and a valve than two valves at
This is low, is in addition sealed by a seal ring between overflow relief valve and valve body, improves the sealing effect of valve, improve pressure resistance
Quality.
Description of the drawings
Fig. 1 is the main structure diagram of the utility model；
Fig. 2 is the backsight structural representation of the utility model；
Fig. 3 is the sectional view of the utility model；
Fig. 4 is the hydraulic schematic diagram of the utility model；
Fig. 5 is the mounting structure schematic diagram of sealing ring；
Fig. 6 is the structural schematic diagram of emergency valve seat；
In figure：1, valve body, 2, safety valve body, 3, sealing ring, 4, fabrication hole one, 5, bolt, 6, O-ring, 7, hydraulic motor,
8, reversal valve, 9, oil pocket one, 10, emergency valve seat, 11, safe spool, 12, spring, 13, relief piston, 14, screw press, 15,
Oilhole, 16, fabrication hole two, 17, oil pocket two, V1, the first oil inlet, V2, the second oil inlet, C1, the first oil outlet, C2 second goes out
Hydraulic fluid port, A1, hydraulic fluid port one, B1, hydraulic fluid port two.
Specific implementation mode
Below against attached drawing, specific embodiment of the present utility model is described in further detail.
The bidirectional relief valve for protecting motor as shown in Figure 1 to Figure 3, including valve body 1 are provided with oil pocket in valve body 1
1 and oil pocket 2 17, oil pocket 1 and oil pocket 2 17 be connected separately with fabrication hole 1 and fabrication hole 2 16, be provided on valve body 1
It is connected to the mounting hole one of oil pocket 1 and the mounting hole two for being connected to oil pocket 2 17, fabrication hole 1 and fabrication hole 2 16 are respectively communicated with peace
Hole one and mounting hole two are filled, overflow relief valve one and overflow relief valve two are separately installed in mounting hole one and mounting hole two, is overflow
It includes safety valve body 2 to flow safety valve one and overflow relief valve two, and screw press is arranged in the outer end centre bore of safety valve body 2
14, the inner end of screw press 14 is equipped with relief piston 13, and the inner end of relief piston 13 is equipped with spring 12,13 periphery of relief piston
O-ring seal is provided in annular groove, the inner end of spring 12 is equipped with safe spool 11, and the inner end of safe spool 11 is equipped with safety valve
Seat 10 is equipped with sealing ring 3, the first oil inlet V1, the second oil inlet is additionally provided on valve body 1 between safety valve body 2 and valve body 1
V2, the first oil outlet C1 and the second oil outlet C2.Oilhole 15 is provided on emergency valve seat 10, the oilhole 15 on overflow relief valve one
It is connected to oil pocket 1, the oilhole 15 on overflow relief valve two is connected to oil pocket 2 17.The end of fabrication hole 1 and fabrication hole 2 16 is equal
It is provided with screw plug.
The valve body 1 is mounted on by bolt 5 on hydraulic motor 7, and the first oil outlet C1 and the second oil outlet C2 connect respectively
On two A2 of one A1 of hydraulic fluid port and hydraulic fluid port of logical hydraulic motor 7, and O-ring 6 is provided at the first oil outlet C1 and the second oil outlet C2.
First oil inlet V1 and the second oil inlet V2 is separately connected the hydraulic fluid port A and hydraulic fluid port B of reversal valve 8, the oil inlet P connection of reversal valve 8
Oil pump, oil return inlet T connect fuel tank.As shown in Figure 4.
As shown in Figure 5 and Figure 6, the sealing ring 3 is sleeved on outside safety valve body 2, front end and 1 spiral shell of valve body of safety valve body 2
Line connects, and sealing ring 3 is internally provided with stepped hole, and the ladder junction of stepped hole is a conical surface, the conical surface and safety valve
The conical surface of 2 periphery of body matches, and mutually matched sealed taper is provided at the aperture of 1 mounting hole of periphery and valve body of sealing ring 3
Face.The taper of the sealing cone is 45 degree, and sealing ring 3 is made using fluorubber material.
Operation principle：When reversal valve 8 is in middle position, oil pump coming oil is from the oil inlet P of reversal valve 8 directly from oil return inlet T
Oil return box, bidirectional relief valve and hydraulic motor 7 do not work.
When reversal valve 8 is in the commutation position of left chamber, hydraulic fluid port A of the high pressure oil through reversal valve 8 flows into bidirectional relief valve
First oil inlet V1 enters one A1 of hydraulic fluid port of hydraulic motor 7 by the first oil outlet C1 of valve body 1, by hydraulic motor 7
It is flowed out by two B1 of hydraulic fluid port after portion's cycle, the second oil outlet C2, the second oil inlet V2 for passing through bidirectional relief valve successively enter commutation
The hydraulic fluid port B of valve 8 carries out oil return, and this completes a normal way to cycle oil, hydraulic motor 7 works normally.In the course of work
In as in the case of there are abnormal resistance or damage parts, hydraulic system can make the oil pocket 1 of bidirectional relief valve form high pressure, this
When high-voltage oil liquid can be pushed by the oilhole 15 of emergency valve seat 10 safe spool 11 overcome spring 12 bearing force be detached from safety valve
Seat 10 flows through the fabrication hole 2 16 on valve body 1 and enters oil pocket 2 17, and oil pocket 2 17 is carried out by the second oil outlet C2 of valve body 1
Oil return, this cyclic process ensure that system pressure in the case where setting pressure more than bidirectional relief valve, can unload at any time
High pressure protects hydraulic motor 7.The height of setting pressure is realized by rotating the suitable of screw press 14, reverse direction, pressure regulation
The depth that screw rod 14 holds relief piston 13 carrys out compressed spring 12, to adjust setting pressure.
When reversal valve 8 is in the commutation position of right chamber, the work when commutation position of left chamber is in reversal valve 8
Principle is identical, equally has overload protection function.
In conclusion the utility model integrates two overflow relief valves by valve body, it is possible to reduce installation space, and one
A valve is lower than the cost of two valves, is in addition sealed by a seal ring between overflow relief valve and valve body, improves valve
Sealing effect improves pressure-resistant quality.
Term "inner", "outside", " longitudinal direction ", " transverse direction ", "upper", "lower", "top", "bottom" in the description of the present invention,
The orientation or positional relationship of equal instructions is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing this practicality newly
Type rather than require the utility model must be with specific azimuth configuration and operation, therefore should not be understood as to the utility model
Limitation.
Claims (4)
1. a kind of bidirectional relief valve for protecting motor, including valve body (1), it is characterised in that be provided with oil pocket in valve body (1)
One (9) and oil pocket two (17), oil pocket one (9) and oil pocket two (17) are connected separately with fabrication hole one (4) and fabrication hole two (16), valve
Be provided with the mounting hole one of connection oil pocket one (9) and the mounting hole two that is connected to oil pocket two (17) on body (1), fabrication hole one (4) and
Fabrication hole two (16) is respectively communicated with mounting hole one and mounting hole two, and overflow safety is separately installed in mounting hole one and mounting hole two
Valve one and overflow relief valve two, overflow relief valve one and overflow relief valve two include safety valve body (2), safety valve body (2)
The inner end of setting screw press (14) in the centre bore of outer end, screw press (14) is equipped with relief piston (13), relief piston (13)
Inner end be equipped with spring (12), the inner end of spring (12) is equipped with safe spool (11), and the inner end of safe spool (11) is equipped with safety
Valve seat (10), is equipped with sealing ring (3) between safety valve body (2) and valve body (1), valve body is additionally provided with the first oil inlet on (1)
(V1), the second oil inlet (V2), the first oil outlet (C1) and the second oil outlet (C2).
2. the bidirectional relief valve according to claim 1 for protecting motor, it is characterised in that：The valve body (1) passes through
Bolt (5) is mounted on hydraulic motor (7), and the first oil outlet (C1) and the second oil outlet (C2) are respectively communicated with hydraulic motor (7)
Hydraulic fluid port one (A1) and hydraulic fluid port two (A2) on, and be provided with O-ring (6) at the first oil outlet (C1) and the second oil outlet (C2).
3. the bidirectional relief valve according to claim 2 for protecting motor, it is characterised in that：Sealing ring (3) set
External in safety valve body (2), sealing ring (3) is internally provided with stepped hole, and the ladder junction of stepped hole is a conical surface, described
The conical surface is matched with the conical surface of safety valve body (2) periphery, is arranged at the periphery of sealing ring (3) and the aperture of valve body (1) mounting hole
There is mutually matched sealing cone.
4. the bidirectional relief valve according to claim 3 for protecting motor, it is characterised in that：The cone of the sealing cone
Degree is 45 degree, and sealing ring (3) is made using fluorubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820164355.8U CN207814070U (en) | 2018-01-31 | 2018-01-31 | Bidirectional relief valve for protecting motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820164355.8U CN207814070U (en) | 2018-01-31 | 2018-01-31 | Bidirectional relief valve for protecting motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207814070U true CN207814070U (en) | 2018-09-04 |
Family
ID=63322371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820164355.8U Active CN207814070U (en) | 2018-01-31 | 2018-01-31 | Bidirectional relief valve for protecting motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207814070U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594567A (en) * | 2019-10-09 | 2019-12-20 | 山东国能实业有限公司 | Oil injection valve for tensioning device |
-
2018
- 2018-01-31 CN CN201820164355.8U patent/CN207814070U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594567A (en) * | 2019-10-09 | 2019-12-20 | 山东国能实业有限公司 | Oil injection valve for tensioning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 273522 No. 2998, Yihua Road, Tangcun Town, Zoucheng City, Jining City, Shandong Province Patentee after: Shandong yikaide Hydraulic Co.,Ltd. Address before: 273522 No. 2998, Yihua Road, Tangcun Town, Zoucheng City, Jining City, Shandong Province Patentee before: ZOUCHENG YIKDE HYDRAULIC CO.,LTD. |