CN206668650U - A kind of interchangeable damping hole type three-way flowrate valve - Google Patents
A kind of interchangeable damping hole type three-way flowrate valve Download PDFInfo
- Publication number
- CN206668650U CN206668650U CN201720326735.2U CN201720326735U CN206668650U CN 206668650 U CN206668650 U CN 206668650U CN 201720326735 U CN201720326735 U CN 201720326735U CN 206668650 U CN206668650 U CN 206668650U
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- China
- Prior art keywords
- interchangeable
- valve
- valve body
- damping
- hole
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- Expired - Fee Related
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- 238000013016 damping Methods 0.000 title claims abstract description 51
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model discloses a kind of interchangeable damping hole type three-way flowrate valve, including valve body, described valve body is sliding valve structure, oil inlet, oil-out and feedback three external hydraulic fluid ports of hydraulic fluid port are set respectively in the side wall of valve body, interchangeable damping head is provided with the side of oil inlet, the damping hole of connection oil inlet and limit spring installation cavity is provided with interchangeable damping head.The utility model uses interchangeable structure to the damping hole in three-way flowrate valve, change the structure and size of the damping hole on three-way flowrate valve, so as to be equipped with various forms of damping holes for different operating modes, reach good Performance Match, be advantageous to the replacing of three-way flowrate valve, safeguard, use cost is saved, improves element utilization rate.
Description
Technical field
A kind of interchangeable damping hole type three-way flowrate valve is the utility model is related to, belongs to technical field of hydraulic.
Background technology
Currently, application of the load sensing Pressure Compensation Technology in engineering truck is more and more extensive, and it both can be with supporting fixed
Pump is measured, again can be to variable pump.Load sensing system using banked direction control valves as representative can realize flow system flow, pressure and power
Match control so that system has good energy conservation characteristic, is widely used in now such as excavator, crane, bull-dozer, pressure
In the engineering machinery such as road machine.In China also there are many technical barriers in the manufacturing of banked direction control valves, such as the manufacturing of main valve body
Cycle is long, complicated etc., and performance is single, can not match different objects and operating mode, changes, maintenance cost is higher.
Utility model content
The purpose of this utility model is, there is provided a kind of simple in construction, working stability, can match different objects and operating mode
Interchangeable damping hole type three-way flowrate valve, with overcome the deficiencies in the prior art.
The technical solution of the utility model：A kind of interchangeable damping hole type three-way flowrate valve, including valve body, described valve body be
Sliding valve structure, oil inlet, oil-out and feedback three external hydraulic fluid ports of hydraulic fluid port are set respectively in the side wall of valve body, in valve body
Valve element is provided with, limit spring is provided with valve element one end, the other end of valve element is connected with spring base, is provided with spring base
Back-moving spring, the other end of back-moving spring and the sealing block Elastic Contact for being threaded in valve body one end, lead in the end of valve body
Cross screw and be fixed with end cap, sealing ring is provided between end cap and sealing block；The side of oil inlet is provided with interchangeable damping
Head, the damping hole of connection oil inlet and limit spring installation cavity is provided with interchangeable damping head.
Further, the interchangeable damping head is cylindrical structural, has annular channel in interchangeable damping the provided circumferentially about of head,
First through hole is radially arranged in annular channel, be provided centrally with connecting with first through hole second in interchangeable damping head is logical
Hole, described annular channel, first through hole and the second through hole constitute the damping hole on interchangeable damping head.
Further, the interchangeable damping hole is connected by screw thread with valve body.
Further, the side of the interchangeable damping head is provided with plug screw, and plug screw is connected by screw thread with valve body.
Due to using above-mentioned technical proposal, the utility model has the advantage of：The utility model is in three-way flowrate valve
Damping hole uses interchangeable structure, changes the structure and size of the damping hole on three-way flowrate valve, so as to be different works
Condition is equipped with various forms of damping holes, reaches good Performance Match, is advantageous to the replacing of three-way flowrate valve, safeguards, saving makes
With cost, element utilization rate is improved.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Description of reference numerals：1- plug screws, the interchangeable damping heads of 2-, 3- limit springs, 4- valve elements, 5- spring bases, 6- are multiple
Position spring, 7- sealing blocks, 8- screws, 9- end caps, 10- sealing rings, 11- valve bodies, 12- annular channels, 13- first through hole, 14- the
Two through holes.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are clearer, it is right with reference to the accompanying drawings and examples
The utility model is described in further detail.
The structural representation of interchangeable damping hole type three-way flowrate valve of the present utility model is as shown in figure 1, including valve body 11, institute
The valve body 11 stated is sliding valve structure, sets oil inlet P, oil-out T and feedback hydraulic fluid port LS tri- respectively in the side wall of valve body 11
Individual external hydraulic fluid port, is provided with valve element 4 in valve body 11, and limit spring 3, the other end and bullet of valve element 4 are provided with the one end of valve element 4
Spring abutment 5 connects, and back-moving spring 6 is provided with spring base 5, the other end of back-moving spring 6 is with being threaded in the one end of valve body 11
The Elastic Contact of sealing block 7, end cap 9 is fixed with by screw 8 in the end of valve body 11, set between end cap 9 and sealing block 7
There is sealing ring 10；Interchangeable damping first 2 is provided with the side of oil inlet P, the interchangeable damping hole 2 passes through screw thread and the phase of valve body 11
Even, connection oil inlet P and the damping hole of the installation cavity of limit spring 3 are provided with interchangeable damping first 2.The interchangeable damping first 2
Side be provided with plug screw 1, plug screw 1 is connected by screw thread with valve body 11.The interchangeable damping first 2 is cylinder knot
Structure, there is annular channel 12 in interchangeable the provided circumferentially about of damping first 2, first through hole 13 be radially arranged in annular channel 12,
It is logical in the second through hole 14 for being provided centrally with connecting with first through hole 13 of interchangeable damping first 2, described annular channel 12, first
The through hole 14 of hole 13 and second constitutes the damping hole in interchangeable damping first 2.
Operation principle of the present utility model：When 4 left and right sides pressure regulation of valve element of three-way flowrate valve, three-way flowrate valve
Left end pressure is equal to feedback hydraulic fluid port LS pressure (Load Sense load feedbacks) plus the pretightning force of back-moving spring 3, works as work
During load change, change pressure is fed back on three-way flowrate valve by feeding back hydraulic fluid port LS, the opening of the oil inlet P of three-way flowrate valve
Amount will change with the change of feedback hydraulic fluid port LS pressure, so as to change the shunt volume of oil return box.So pass through three-way flowrate
The shunting action of valve, the flow into working connection can be adjusted and control load maximum pressure.
Claims (4)
1. a kind of interchangeable damping hole type three-way flowrate valve, including valve body (11), it is characterised in that：Described valve body (11) is guiding valve
Structure, oil inlet (P), oil-out (T) and feedback hydraulic fluid port (LS) three external oil collectings are set respectively in the side wall of valve body (11)
Mouthful, be provided with valve element (4) in the valve body (11), be provided with limit spring (3) in valve element (4) one end, the other end of valve element (4) with
Spring base (5) connects, and back-moving spring (6) is provided with spring base (5), the other end of back-moving spring (6) is with being threaded in
Sealing block (7) Elastic Contact of valve body (11) one end, is fixed with end cap (9) by screw (8) in the end of valve body (11), is holding
Sealing ring (10) is provided between lid (9) and sealing block (7)；Interchangeable damping head (2) is provided with the side of oil inlet (P),
The damping hole of connection oil inlet (P) and limit spring (3) installation cavity is provided with interchangeable damping head (2).
2. interchangeable damping hole type three-way flowrate valve according to claim 1, it is characterised in that：The interchangeable damping head (2)
For cylindrical structural, there is annular channel (12) in interchangeable the provided circumferentially about of damping head (2), set in the radial direction of annular channel (12)
Be equipped with first through hole (13), it is interchangeable damping head (2) the second through hole (14) for being provided centrally with connecting with first through hole (13),
Described annular channel (12), first through hole (13) and the second through hole (14) constitutes the damping hole on interchangeable damping head (2).
3. interchangeable damping hole type three-way flowrate valve according to claim 1, it is characterised in that：The interchangeable damping hole (2)
It is connected by screw thread with valve body (11).
4. interchangeable damping hole type three-way flowrate valve according to claim 1, it is characterised in that：The interchangeable damping head (2)
Side be provided with plug screw (1), plug screw (1) is connected by screw thread with valve body (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720326735.2U CN206668650U (en) | 2017-03-30 | 2017-03-30 | A kind of interchangeable damping hole type three-way flowrate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720326735.2U CN206668650U (en) | 2017-03-30 | 2017-03-30 | A kind of interchangeable damping hole type three-way flowrate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206668650U true CN206668650U (en) | 2017-11-24 |
Family
ID=60366517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720326735.2U Expired - Fee Related CN206668650U (en) | 2017-03-30 | 2017-03-30 | A kind of interchangeable damping hole type three-way flowrate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206668650U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547820A (en) * | 2018-07-16 | 2018-09-18 | 贵州大学 | A kind of box-like orifice valve of pressure difference control group |
-
2017
- 2017-03-30 CN CN201720326735.2U patent/CN206668650U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547820A (en) * | 2018-07-16 | 2018-09-18 | 贵州大学 | A kind of box-like orifice valve of pressure difference control group |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 |