CN105275484A - Hydraulic control one-way valve - Google Patents
Hydraulic control one-way valve Download PDFInfo
- Publication number
- CN105275484A CN105275484A CN201410334408.2A CN201410334408A CN105275484A CN 105275484 A CN105275484 A CN 105275484A CN 201410334408 A CN201410334408 A CN 201410334408A CN 105275484 A CN105275484 A CN 105275484A
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- valve
- valve seat
- push rod
- piston
- hole
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Abstract
The invention discloses a hydraulic control one-way valve. The hydraulic control one-way valve comprises a valve body, a thread sleeve, a valve core, a valve seat, an ejector rod, fist springs and a piston. The valve seat is located between the thread sleeve and the piston. The ejector rod is provided with a head portion, a limiting portion, a sliding portion and a tail portion along an axial direction. The valve seat is internally provided with a first through hole which is adjacent to an unloading cavity and allows the sliding portion of the ejector rod to penetrate through. The piston is provided with a second through hole allowing the tail portion of the ejector rod to penetrate through. The head portion and the limiting portion of the ejector rod are located into the unloading cavity of the valve seat. The diameter of the limiting portion is larger than that of the first through hole. The hydraulic control one-way valve has following beneficial effects: the piston connected with the ejector rod is arranged in the valve body and the limiting portion and a baffle ring are arranged on the ejector rod such that the first springs, the ejector rod, the piston and the valve seat are connected to a insert-installing type hydraulic assembly; without arranging any thread on the ejector rod and the valve seat, structures of the ejector rod and the valve seat can be simplified in order to be favorable for machining and production of the ejector rod and the valve seat; and the ejector rod, the valve seat and the piston are thus conveniently assembled.
Description
Technical field
The present invention relates to the Hydraulic Elements in coal mine hydraulic supporting hydraulic circuit, specifically, the present invention relates to a kind of hydraulic control one-way valve.
Background technology
Since coal mine fully-mechanized mining starts, due to the difference of various coal mining environment, there is stricter requirement to hydraulic support and supporting equipment.Current hydraulic control one-way valve is provided with the hydraulic package of plug-in, the screw thread matched is provided with in the end and valve seat of push rod, cause push rod and valve seat construction complexity, be unfavorable for manufacturing, and the screwed hole be through due to push rod in valve seat, when push rod moves, ram surface can with the thread contact in valve seat screwed hole, and Long-Time Service can cause valve seat screw thread to be destroyed, and finally can affect the dismounting of push rod.
Summary of the invention
The invention provides a kind of hydraulic control one-way valve, object simplifies push rod structure.
To achieve these goals, the technical scheme that the present invention takes is: a kind of hydraulic control one-way valve, comprise valve body, swivel nut, spool, valve seat, push rod and the first spring be set on push rod, swivel nut to insert in valve pocket with valve body as being threaded, spool is built in swivel nut, unloading cavity is provided with in valve seat, hydraulic control one-way valve also comprises piston in the valve pocket inserting described valve body and coaxial with described valve seat, valve seat is between described swivel nut and piston, described push rod is provided with head vertically, limiting section, sliding part and afterbody, and first through hole that allow the sliding part of push rod pass adjacent with unloading cavity is provided with in valve seat, piston is provided with the second through hole allowing the afterbody of push rod pass, the head of push rod and limiting section are arranged in the unloading cavity of valve seat, the diameter of limiting section is greater than the diameter of the first through hole, afterbody is provided with the back-up ring for axial limiting, described first spring one end is against on limited block, the other end is against on piston, described valve body is provided with the first working hole, the second working hole and the 3rd working hole that are communicated with valve pocket, first working hole is coaxial and be positioned at the side of piston with valve pocket, the axis of the second working hole and the axes normal of valve pocket, and the second working hole is positioned at the side of swivel nut, angle between the axis of the 3rd working hole and the axis of valve pocket is less than 90 degree, and the 3rd working hole is positioned at the side of valve seat.
The end of described valve seat is provided with the valve pad for being connected with described seal spool.
The sealed end of described spool is frustum structure, and the head of described push rod starts to contact at described valve pad place with spool.
The diameter of the sliding part of described push rod is greater than the diameter of described second through hole.
The diameter of the head of described push rod is less than the diameter of described limiting section.
Hydraulic control one-way valve of the present invention, the piston be connected with push rod is set in valve body, and by arranging limiting section and back-up ring on push rod, the first spring, push rod, piston and valve seat can be made to connect into the hydraulic package of plug-in, and all without the need to arranging screw thread on push rod and valve seat, thus the structure of push rod and valve seat can be simplified, be conducive to the processing and fabricating of push rod and valve seat, and be convenient to the assembling of push rod and valve seat and piston.
Accompanying drawing explanation
This manual comprises the following drawings, shown content respectively:
Fig. 1 is the sectional view of hydraulic control one-way valve of the present invention;
Fig. 2 is the sectional view of push rod;
Fig. 3 is the sectional view of valve seat;
Fig. 4 is the sectional view of piston;
Fig. 5 is the top view of hydraulic control one-way valve of the present invention;
Be labeled as in figure:
1, swivel nut; 2, valve body; 21, valve pocket; 22, inclined-plane is installed;
3, push rod; 31, head; 32, limiting section; 33, sliding part; 34, afterbody;
4, valve seat; 41, unloading cavity; 42, port; 43, the first through hole; 44, holding tank;
5, piston; 51, the second through hole;
6, back-up ring; 7, spool; 8, the first spring; 9, the second spring; 10, valve pad;
PB, the first working hole; A, the second working hole; PA, the 3rd working hole.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, be described in further detail the specific embodiment of the present invention, object helps those skilled in the art to have more complete, accurate and deep understanding to design of the present invention, technical scheme, and contribute to its enforcement.
As shown in Figures 1 to 5, a kind of hydraulic control one-way valve of the present invention, comprises valve body 2, swivel nut 1, spool 7, valve seat 4, push rod 3, first spring 8 and the second spring 9, first spring 8 and is set on push rod 3.Valve pocket 21 is the circular holes formed from one end of valve body 2 towards valve body 2 internal recess, and swivel nut 1 to insert in valve pocket 21 with valve body 2 for being threaded at this end of valve body 2, and valve pocket 21 is also closed at this end by swivel nut 1.Be provided with at axially spacing to valve seat 4 step surface in valve pocket 21 inside, swivel nut 1 inserts end sleeve in valve pocket 21 in one end of valve seat 4, after swivel nut 1 is tightened, swivel nut 1 promotes that valve seat 4 is mobile in valve pocket 21 makes the other end of valve seat 4 contact with the step surface in valve pocket 21, and swivel nut 1 coordinates with step surface and clamps valve seat 4.Be provided with unloading cavity 41 in valve seat 4, and on the end face of swivel nut 1, be provided with a port 42 be communicated with unloading cavity 41 at valve seat 4, this port 42 is axially run through valve seat 4 end sidewalls and the circular hole coaxial with spool 7.Spool 7 is built in swivel nut 1, the shrinkage pool for holding spool 7 is provided with in swivel nut 1 inside, second spring 9 is arranged in this shrinkage pool, one end of second spring 9 is against on the inwall of swivel nut 1, the other end inserts in spool 7, second spring 9 moves, to realize the closedown of hydraulic control one-way valve towards port 42 place of valve seat 4 for promoting spool 7.This hydraulic control one-way valve also comprises piston 5 in the valve pocket 21 inserting valve body 2 and coaxial with valve seat 4, and valve seat 4 is between swivel nut 1 and piston 5, and piston 5 is cylindrical structural, and piston 5 can axially slide in valve pocket 21.Push rod 3 is and piston 5 and the coaxial revolving body of slide, push rod 3 is provided with head 31 vertically successively, limiting section 32, sliding part 33 and afterbody 34, adjacent with unloading cavity 41 and the first through hole 43 allowing the sliding part 33 of push rod 3 pass is provided with in valve seat 4, piston 5 is provided with the second through hole 51 allowing the afterbody 34 of push rod 3 pass, the head 31 of push rod 3 and limiting section 32 are arranged in the unloading cavity 41 of valve seat 4, the diameter of limiting section 32 is greater than the diameter of the first through hole 43, afterbody 34 is provided with the back-up ring 6 for axial limiting, one end of first spring 8 is against on limited block, the other end is against on piston 5.Owing to being provided with limiting section 32 and back-up ring 6 on push rod 3, push rod 3 is realized axial spacing by limiting section 32 and back-up ring 6, push rod 3 is connected with valve seat 4 and piston 5 and the first spring 8 be set on push rod 3 is integrally formed structure, formation can insert the plug-in hydraulic package in valve pocket 21, push rod 3 and valve seat 4 are threaded without the need to adopting, all without the need to arranging screw thread on push rod 3 and valve seat 4, thus the structure of push rod 3 and valve seat 4 can be simplified, be conducive to the processing and fabricating of push rod 3 and valve seat 4, and be convenient to the assembling of push rod 3 and valve seat 4 and piston 5, improve the efficiency of assembling of hydraulic package.
As shown in Figure 1 and Figure 5, valve body 2 is provided with the first working hole PB, the second working hole A and the 3rd working hole PA that are communicated with valve pocket 21.First working hole PB is coaxial and be positioned at the side of piston 5 with valve pocket 21, first working hole PB is opened in the other end relative with the one end at swivel nut 1 place on valve body 2 length direction, the hydraulic oil entered from the first working hole PB can promote piston 5 and move, and then promote push rod 3 by piston 5 and move towards spool 7, until contact with spool 7, time hydraulic control one-way valve open.Second working hole A is opened on a side of valve body 2 thickness direction, the axis of the second working hole A and the axis perpendicular of valve pocket 21, and the second working hole A is positioned at the side of swivel nut 1, the corresponding swivel nut 1 of setting position of the second working hole A, second working hole A is communicated with valve pocket 21, be provided with the liquid pass hole corresponding with shrinkage pool position at the sidewall of swivel nut 1, the shrinkage pool in swivel nut 1 is communicated with the second working hole A by liquid pass hole.3rd working hole PA is that of being opened on valve body 2 installs on inclined-plane 22, this installation inclined-plane 22 is that the lateral edge from the end face edge at the first working hole PB place towards the second working hole A place extends, installation inclined-plane 22 and the angle between this end face and this side are greater than 90 degree, the axis of the 3rd working hole PA is perpendicular with installation inclined-plane 22, by the 3rd working hole PA relative to the first working hole PB and the second working hole A for being obliquely installed, with the attitude of coupling with the joint of the 3rd working hole PA grafting, be convenient to joint and insert.Angle between the axis of the 3rd working hole PA and the axis of valve pocket 21 is less than 90 degree, and the 3rd working hole PA is positioned at the side of valve seat 4, be provided with the liquid pass hole for making unloading cavity 41 be communicated with valve pocket 21 at the sidewall of valve seat 4, the 3rd working hole PA is communicated with unloading hole by this liquid pass hole.
As shown in Figure 5, valve body 2 offers altogether two the second working hole A, valve pocket 21 is positioned at the center position on valve body 2 width, and two the second working hole A are with the axis of valve pocket 21 for line of symmetry is symmetrical, and two the second working hole A are communicated with valve pocket 21 in the axis both sides of valve pocket 21.
As shown in Figure 1, this hydraulic control one-way valve is also provided with a valve pad 10 coaxial with spool 7 at port 42 place of valve seat 4, and spool 7 and valve pad 10 are tightly connected, to strengthen sealing performance.In order to strengthen sealing performance further, can directly for be firmly tightly connected between spool 7 and valve seat 4, metal material is adopted to make spool 7, and vacuum hardening technology will be adopted, refine after quenching, hardness is high again, relative to the sealing of softwood matter, hard sealing not only good seal performance, also ability super-pressure, one way valve long service life.As shown in Figure 1, the head of spool 7 and be frustum structure, the head of spool 7 no longer stretches in unloading cavity 41, and the head 31 of push rod 3 starts to contact with valve pad 10 place of spool 7 only on valve seat 4, the structure of spool 7 is simpler, the more compact structure of hydraulic control one-way valve entirety.
As depicted in figs. 1 and 2, the surface at head 31 place of push rod 3 is smooth surface, the diameter of head 31 is less than the diameter of limiting section 32, limiting section 32 is conical structure, its miner diameter end is connected with head 31, and bigger diameter end is connected with sliding part 33, and the diameter of limiting section 32 bigger diameter end is greater than the diameter of the first through hole 43 on valve seat 4, can position-limiting action be played, thus valve seat 4 slippage can be prevented after push rod 3 is connected with valve seat 4.And the diameter of the sliding part 33 of push rod 3 is greater than the diameter of the second through hole 51 on piston 5, and back-up ring 6 is stuck on afterbody 34, and back-up ring 6 and sliding part 33 are distributed in the both sides of piston 5, carries out axial limiting, make push rod 3 be connected with piston 5 at afterbody 34 pairs of pistons 5.
As preferably, the back-up ring 6 be arranged on the afterbody 34 of push rod 3 is circlip for shaft.
As preferably, as shown in figures 1 and 3, valve seat 4 is provided with from the end face holding tank 44 that inwardly recessed of being formed is circular towards the end of piston 5, this holding tank 44 is for holding the first spring 8, this holding tank 44 is communicated with the first through hole 43 and coaxial, sliding part 33 is enclosed within sliding part 33 through holding tank 44, first spring 8, and one end of the first spring 8 to be inserted in holding tank 44 and is against on the inwall of holding tank 44.Valve seat 4 arranges this holding tank 44, can position the first spring 8, make the first spring 8 axial location more reliable, the first spring 8 can not bend inclination in valve seat 4, improve the steering capability to the first spring 8, guarantee that the axial force of the first spring 8 is more excellent.
The operating principle of this hydraulic control one-way valve is identical with the hydraulic control one-way valve of prior art, and the length of this hydraulic control one-way valve is 132mm, width is 80mm, thickness is 85mm, and nominal flow rate is 250L/min, and nominal pressure is 50MPa, and working media is emulsion.
Below by reference to the accompanying drawings to invention has been exemplary description.Obviously, specific implementation of the present invention is not subject to the restrictions described above.As long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; Or without improvement, above-mentioned design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention.
Claims (5)
1. a hydraulic control one-way valve, comprise valve body, swivel nut, spool, valve seat, push rod and the first spring be set on push rod, swivel nut to insert in valve pocket with valve body as being threaded, spool is built in swivel nut, unloading cavity is provided with in valve seat, it is characterized in that: also comprise piston in the valve pocket inserting described valve body and coaxial with described valve seat, valve seat is between described swivel nut and piston, described push rod is provided with head vertically, limiting section, sliding part and afterbody, and first through hole that allow the sliding part of push rod pass adjacent with unloading cavity is provided with in valve seat, piston is provided with the second through hole allowing the afterbody of push rod pass, the head of push rod and limiting section are arranged in the unloading cavity of valve seat, the diameter of limiting section is greater than the diameter of the first through hole, afterbody is provided with the back-up ring for axial limiting, described first spring one end is against on limited block, the other end is against on piston, described valve body is provided with the first working hole, the second working hole and the 3rd working hole that are communicated with valve pocket, first working hole is coaxial and be positioned at the side of piston with valve pocket, the axis of the second working hole and the axes normal of valve pocket, and the second working hole is positioned at the side of swivel nut, angle between the axis of the 3rd working hole and the axis of valve pocket is less than 90 degree, and the 3rd working hole is positioned at the side of valve seat.
2. hydraulic control one-way valve according to claim 1, is characterized in that: the end of described valve seat is provided with the valve pad for being connected with described seal spool.
3. hydraulic control one-way valve according to claim 2, is characterized in that: the sealed end of described spool is frustum structure, and the head of described push rod starts to contact at described valve pad place with spool.
4. the hydraulic control one-way valve according to Claims 2 or 3, is characterized in that: the diameter of the sliding part of described push rod is greater than the diameter of described second through hole.
5. hydraulic control one-way valve according to claim 4, is characterized in that: the diameter of the head of described push rod is less than the diameter of described limiting section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410334408.2A CN105275484A (en) | 2014-07-14 | 2014-07-14 | Hydraulic control one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410334408.2A CN105275484A (en) | 2014-07-14 | 2014-07-14 | Hydraulic control one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105275484A true CN105275484A (en) | 2016-01-27 |
Family
ID=55145216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410334408.2A Withdrawn CN105275484A (en) | 2014-07-14 | 2014-07-14 | Hydraulic control one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105275484A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676117A (en) * | 2017-09-22 | 2018-02-09 | 鸿大智能机械有限公司 | Hydraulic control one-way valve |
| CN108412828A (en) * | 2018-03-27 | 2018-08-17 | 中国石油化工股份有限公司 | A kind of hydraulic control flat valve |
-
2014
- 2014-07-14 CN CN201410334408.2A patent/CN105275484A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676117A (en) * | 2017-09-22 | 2018-02-09 | 鸿大智能机械有限公司 | Hydraulic control one-way valve |
| CN108412828A (en) * | 2018-03-27 | 2018-08-17 | 中国石油化工股份有限公司 | A kind of hydraulic control flat valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160127 |