CN103939408A - Side valve type flow switching throttle valve - Google Patents
Side valve type flow switching throttle valve Download PDFInfo
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- CN103939408A CN103939408A CN201410153422.2A CN201410153422A CN103939408A CN 103939408 A CN103939408 A CN 103939408A CN 201410153422 A CN201410153422 A CN 201410153422A CN 103939408 A CN103939408 A CN 103939408A
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- valve seat
- valve
- mounting hole
- hole
- oil
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- Sliding Valves (AREA)
Abstract
The invention discloses a side valve type flow switching throttle valve. The side valve type flow switching throttle valve comprises an oil way plate, a blind hole formed in the center of the oil way plate serves as a valve seat installation hole, and the valve sat provided with a through hole is matched with the valve seat installation hole. The valve seat is arranged in the valve seat installation hole of the oil way plate, and an annular seam S1 formed by the outer side wall of the valve seat and the inner wall of the valve seat installation hole serves as an oil return channel with a large drift diameter. A damping valve core penetrating through the through hole is arranged in the through hole of the valve seat. An annular seam S2 formed by the inner wall of the through hole and the outer wall of a damping valve core serves as an oil return channel with a small drift diameter. An oil way T hole is formed in the lateral wall of a spring installation hole, a valve seat seal gasket is arranged at the bottom of the valve seat, and plane sealing is formed by the lower end face of the valve seat seal gasket and the step face. A side valve type structure is adopted in the side valve type flow switching throttle valve, a spool moves to achieve peripheral balance, the retardant phenomenon cannot be caused, an annular seam throttling method is adopted in a fast speed oil way and a slow speed oil way, and the side valve type flow switching throttle valve has a low requirement for the pollution degree of a system working medium.
Description
Technical field
The present invention relates to a kind of hydraulic throttle valve, be specially a kind of sliding valve style flow switch throttle valve, be mainly used in regulating the flow enter hydraulic actuator, belong to throttle valve field in the flow control valve of hydraulic control valve.
Background technique
Hydraulic system is widely used in the every field of mechanical industry, and the motion speed of throttle valve major control hydraulic actuator, is generally used in oil hydraulic circuit, and throttle valve is by changing throttling cross section or chock length to control the valve class of fluid flow.
Conventional switchable type hydraulic throttle valve adopts steel ball to add thin wall small hole formula structure more at present, in the patent documentation technological scheme of existing switchable type hydraulic throttle valve in Chinese patent literature particularly, invention notice of authorization CN202203467U discloses a kind of switchable type throttle valve, on throttle valve spring, push up a steel ball, throttle valve seat hole is outwards provided with fuel-displaced major path, in throttle valve seat hole, throttle valve spring side is provided with again small aperture passage (seeing that the specification the 1st page [0004] of this patent application OK), because adopting steel ball and spring structure to open and close fuel-displaced major path, when in passage, working fluid fluidised form is unstable, can cause steel ball closing passage not in time or steel ball run away to the problem that a side cannot closing passage, again because aperture passage aperture is little, " described small aperture channel diameter is 0.3mm " (seeing that the specification the 1st page [0005] of this patent application OK) liquid after major path is closed aperture of flowing through, rubbish in hydraulic system can stop up aperture and cut off oil circuit, makes hydraulic system disabler.
In sum, there is following problem in existing switchable type throttle valve:
1, express passway adopts ball valve sealing mode, ball valve liquid body liquid-flow state impact during work, and closing property and sensitivity are poor, have the shortcoming of the fast length of handoff response time at a slow speed of system, job insecurity;
2, slow path adopts thin wall small hole to control the mode of fluid flow, because of thin wall small hole aperture less generally in about 0.3mm, to the turbidity test of hydraulic work system medium-hydraulic oil, require very high, slight solid grain contamination will stop up thin wall small hole, causes whole hydraulic system fails.
3, slow path adopts thin wall small hole structure, and fluid is flowed through and can be produced heat after thin wall small hole and make system heating, all can exert an influence to the life-span of the life-span of hydraulic oil and even whole hydraulic system.
Therefore, design a kind of sealing means reliable, open and close highly sensitively, the changeable throttle valve that damp channel has choke preventing function is association area problem demanding prompt solution.
Summary of the invention
The object of the invention is for a kind of sliding valve style flow switch throttle valve is provided, to solve the problems referred to above of prior art.
The present invention takes following technological scheme:
A sliding valve style flow switch throttle valve, comprises oil-way board, and it is valve seat mounting hole that described oil-way board center arranges a blind hole, and the valve seat that a medial axis is provided with through hole mates with valve seat mounting hole; Described valve seat is placed in the valve seat mounting hole of oil-way board, and the annulus S1 that valve seat outer side wall and valve seat mounting hole inwall form is the large latus rectum passage of oil return; On described oil-way board, be also provided with the spring mounting hole of placing valve seat Returnning spring; Spring mounting hole be located at valve seat mounting hole under and be communicated with valve seat mounting hole; The cross-section area of described spring mounting hole is less than the cross-section area of valve seat mounting hole, and the upper-end surface of spring mounting hole forms step surface; In the through hole of described valve seat, be provided with the damping spool that runs through through hole; Between through-hole wall and orifice valve outer core, forming annulus S2 is the little latus rectum passage of oil return; On the sidewall of described spring mounting hole, be provided with oil circuit T hole (oil outlet); Described valve seat is provided with valve base sealing pad on bottom, and the lower end surface of valve base sealing pad and step surface form plane sealing; Described valve seat mounting hole oral area is provided with the limit assembly that restriction valve seat departs from valve seat mounting hole.
Described limit assembly is comprised of with back-up ring and back-up ring mounting groove the hole of being located at directly over valve seat mounting hole.
Directly over described valve seat mounting hole, the below of back-up ring mounting groove is provided with the filter mounting hole of placing filter, and filter is fixed with back-up ring after packing filter mounting hole into.
Feature of the present invention is: adopt slide-valve structure, the circumferential hydro-cushion of valve core movement can not produce retardance phenomenon, and asphalt channel adopts annulus throttle style at a slow speed soon, low to system works medium pollution class requirement.
Beneficial effect of the present invention is:
1, to adopt slide-valve structure to close highly sensitive for the large latus rectum passage of load oil return, and system works is stable.
2, large latus rectum pathway closure is used plane sealing mode, and adopts flexible material sealing, reduces system instant impact, improves sealing reliability and avoids impacting the damage that causes system simultaneously.
3, slow path annulus structural design, reduces system works medium pollution class requirement, the heating of minimizing system, the working life of having improved system.
Accompanying drawing explanation
Fig. 1 is assembly structure schematic diagram of the present invention;
Fig. 2 is the vertical section structure schematic diagram of the large latus rectum passage of the present invention open mode;
Fig. 3 is the vertical section structure schematic diagram of the large latus rectum pathway closure of the present invention state;
(in figure, P represents oil-feed, and T represents fuel-displaced, and arrow represents oil circuit traffic direction)
Wherein, 1, back-up ring, 2, filter, 3, valve seat, 4, valve base sealing pad, 5, damping spool, 6, valve seat Returnning spring, 7, oil-way board, 701, step surface, 702, valve seat mounting hole, 703, spring mounting hole.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
A kind of sliding valve style flow switch throttle valve by shown in Fig. 1, Fig. 2 and Fig. 3, comprises oil-way board 7, and it is that the valve seat 3 that valve seat mounting hole 702, one medial axis are provided with through hole mates with valve seat mounting hole 702 that described oil-way board 7 centers arrange a blind hole; Described valve seat 3 is placed in the valve seat mounting hole 702 of oil-way board 7, and the annulus S1 that valve seat 3 outer side walls and valve seat mounting hole 702 inwalls form is the large latus rectum passage of oil return; On described oil-way board 7, be also provided with the spring mounting hole 703 of placing valve seat Returnning spring 6; Spring mounting hole 703 be located at valve seat mounting hole 702 under and be communicated with valve seat mounting hole 702; The cross-section area of described spring mounting hole 703 is less than the cross-section area of valve seat mounting hole 702, and the upper-end surface of spring mounting hole 703 forms step surface 701; In the through hole of described valve seat 3, be provided with the damping spool 5 that runs through through hole; Between through-hole wall and damping spool 5 outer walls, forming annulus S2 is the little latus rectum passage of oil return; On the sidewall of described spring mounting hole 703, be provided with oil circuit T hole (oil outlet); Described valve seat is provided with valve base sealing pad 4 on 3 bottoms, and the lower end surface of valve base sealing pad 4 and step surface 701 form plane sealing; Described valve seat mounting hole 702 oral areas are provided with the limit assembly that restriction valve seat 3 departs from valve seat mounting hole 702.
Described limit assembly is comprised of with back-up ring 1 and back-up ring mounting groove the hole of being located at directly over valve seat mounting hole 702.
Further, directly over described valve seat mounting hole 702, the below of back-up ring mounting groove is provided with the filter mounting hole of placing filter 2, and filter 2 is fixed with back-up ring 1 after packing filter mounting hole into.
As shown in Figure 2, when throttle valve is unloaded, oil return speed is fast, and oil directly flows to T hole from annulus S1 between valve seat 3 and oil-way board 7 step surfaces 701.As shown in Figure 3, when system internal pressure is large, valve seat 3 compression valve seat Returnning springs 6 are closed large latus rectum passage, and oil flows to T hole from annulus S2.
Referring to Fig. 1, Fig. 2, described valve seat 3 is Step Shaft, and valve base sealing pad 4 is arranged on Step Shaft, forms sealing plane.
Referring to Fig. 1, Fig. 2, valve seat Returnning spring 6 is placed in the interior upper-end surface of mounting hole 703 and contacts with valve seat 3 lower end surfaces, supports valve seat 3, and its unloaded large latus rectum passage is often opened.
In addition to the implementation, all employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (3)
1. a sliding valve style flow switch throttle valve, comprises oil-way board, it is characterized in that: it is valve seat mounting hole that described oil-way board center arranges a blind hole, and the valve seat that a medial axis is provided with through hole mates with valve seat mounting hole; Described valve seat is placed in the valve seat mounting hole of oil-way board, and the annulus S1 that valve seat outer side wall and valve seat mounting hole inwall form is the large latus rectum passage of oil return; On described oil-way board, be also provided with the spring mounting hole of placing valve seat Returnning spring; Spring mounting hole be located at valve seat mounting hole under and be communicated with valve seat mounting hole; The cross-section area of described spring mounting hole is less than the cross-section area of valve seat mounting hole, and the upper-end surface of spring mounting hole forms step surface; In the through hole of described valve seat, be provided with the damping spool that runs through through hole; Between through-hole wall and orifice valve outer core, forming annulus S2 is the little latus rectum passage of oil return; On the sidewall of described spring mounting hole, be provided with oil circuit oil outlet; Described valve seat is provided with valve base sealing pad on bottom, and the lower end surface of valve base sealing pad and step surface form plane sealing; Described valve seat mounting hole oral area is provided with the limit assembly that restriction valve seat departs from valve seat mounting hole.
2. a kind of sliding valve style flow switch throttle valve according to claim 1, is characterized in that: limit assembly is comprised of with back-up ring and back-up ring mounting groove the hole of being located at directly over valve seat mounting hole.
3. a kind of sliding valve style flow switch throttle valve according to claim 2, it is characterized in that: directly over described valve seat mounting hole, the below of back-up ring mounting groove is provided with the filter mounting hole of placing filter, and filter is fixed with back-up ring after packing filter mounting hole into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410153422.2A CN103939408B (en) | 2014-04-16 | 2014-04-16 | A kind of side valve type flow switch choke valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410153422.2A CN103939408B (en) | 2014-04-16 | 2014-04-16 | A kind of side valve type flow switch choke valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103939408A true CN103939408A (en) | 2014-07-23 |
| CN103939408B CN103939408B (en) | 2016-05-11 |
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ID=51187234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410153422.2A Active CN103939408B (en) | 2014-04-16 | 2014-04-16 | A kind of side valve type flow switch choke valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103939408B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020088447A1 (en) * | 2018-10-29 | 2020-05-07 | 宁波奥克斯电气股份有限公司 | Throttling apparatus and air conditioner |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4593715A (en) * | 1983-12-02 | 1986-06-10 | Glyco-Antriebstechnik Gmbh | Hydraulic controllable two-port valve for a liquid stream |
| EP2226697A1 (en) * | 2009-03-05 | 2010-09-08 | Neoperl GmbH | Flow rate regulator |
| CN201802694U (en) * | 2010-09-17 | 2011-04-20 | 实用动力(中国)工业有限公司 | Plug-in type throttling valve with annular cross section |
| CN201874910U (en) * | 2010-11-29 | 2011-06-22 | 广西玉柴重工有限公司 | One-way throttle valve |
| CN202203467U (en) * | 2011-08-11 | 2012-04-25 | 富阳通力机械制造有限公司 | Long floor jack throttle valve capable of controlling lowering speed |
| CN203809395U (en) * | 2014-04-16 | 2014-09-03 | 江苏海力达机电制造有限公司 | Slide valve type flow shifting throttling valve |
-
2014
- 2014-04-16 CN CN201410153422.2A patent/CN103939408B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4593715A (en) * | 1983-12-02 | 1986-06-10 | Glyco-Antriebstechnik Gmbh | Hydraulic controllable two-port valve for a liquid stream |
| EP2226697A1 (en) * | 2009-03-05 | 2010-09-08 | Neoperl GmbH | Flow rate regulator |
| CN201802694U (en) * | 2010-09-17 | 2011-04-20 | 实用动力(中国)工业有限公司 | Plug-in type throttling valve with annular cross section |
| CN201874910U (en) * | 2010-11-29 | 2011-06-22 | 广西玉柴重工有限公司 | One-way throttle valve |
| CN202203467U (en) * | 2011-08-11 | 2012-04-25 | 富阳通力机械制造有限公司 | Long floor jack throttle valve capable of controlling lowering speed |
| CN203809395U (en) * | 2014-04-16 | 2014-09-03 | 江苏海力达机电制造有限公司 | Slide valve type flow shifting throttling valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020088447A1 (en) * | 2018-10-29 | 2020-05-07 | 宁波奥克斯电气股份有限公司 | Throttling apparatus and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103939408B (en) | 2016-05-11 |
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