CN103195765B - Hand-operated pilot valve - Google Patents
Hand-operated pilot valve Download PDFInfo
- Publication number
- CN103195765B CN103195765B CN201310067047.5A CN201310067047A CN103195765B CN 103195765 B CN103195765 B CN 103195765B CN 201310067047 A CN201310067047 A CN 201310067047A CN 103195765 B CN103195765 B CN 103195765B
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- valve
- seat
- spring
- valve seat
- oil
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Abstract
A hand-operated pilot valve comprises a handle, a valve body, an ejector rod, a first spring, a first spring seat, a valve seat, a valve rod, a second spring seat, a second spring and a plug, wherein one end of the handle is in rotational connection with a pin shaft in the valve body; the side surface at the bottom of the handle is propped against the ejector rod; the first spring is in sleeve joint with the ejector rod; one end of the first spring is propped against a lug boss on the ejector rod; the other end of the first spring is propped against the first spring seat; the ejector rod is in slide fit with the valve seat; an oil inlet, an oil outlet line and an oil return line are arranged on the valve seat; a blind hole and an oil return hole communicated with the blind hole are formed in the ejector rod; the valve rod is in slide fit with the valve seat; one end of the second spring is propped against the second spring seat; the other end of the second spring is propped against the plug; the second spring seat is in slide fit with the plug; one end of the plug is propped against the valve seat; the other end of the plug is in threaded connection with the valve body; and an oil chamber is communicated with the oil outlet line through a communication oil line. The hand-operated pilot valve is simple in structure, good in sealing performance and convenient to operate.
Description
Technical field
The present invention relates to a kind of pilot valve, specifically relate to a kind of manual pilot valve.
Background technique
State Intellectual Property Office website discloses a kind of manual pilot valve, this pilot valve comprises valve body, the mangetic core assembly be made up of valve rod and two steel balls, handle, cam-like handle and push rod, cam-like handle one end and handle hinged, the cam-like handle the other end is connected with push rod, the steel ball promoted in mangetic core assembly by push rod moves thus opens or cut out oil circuit, realizes the function of other valves of pilot operated or element.Its shortcoming existed is: one is be provided with two handles, and the linkage structure complexity between cam-like handle and push rod, cause the complex structure of whole manual pilot valve; Two is that steel ball in mangetic core assembly easily leaks when sealing, and causes sealability bad; Three are due to two steel balls or contact with high pressure liquid force feed, and the resistance be subject to during operating grip is still comparatively large, makes inconvenient operation.
Summary of the invention
Technical problem to be solved by this invention is, provides that a kind of structure is simple, good seal performance and easy to operate manual pilot valve.
Technical solution of the present invention is, a kind of manual pilot valve with following structure is provided, it comprises handle, valve body, push rod, first spring, first spring seat, valve seat, valve rod, second spring seat, second spring and screw plug, described handle one end is positioned at outside valve body, the described handle the other end is rotatably connected on the bearing pin in valve body and handle bottom sides is against on push rod, described first spring housing is connected on boss that on push rod and one end is against push rod and the other end is against on the first spring seat, described push rod and valve seat sliding fit, described valve seat is provided with filler opening, vent line and oil circuit, described screw plug is provided with the oil-feed path be communicated with filler opening, its opening and valve rod head fits is provided with the spill port be communicated with or block vent line and the blind hole of oil circuit and be communicated with blind hole in described push rod, described valve rod and valve seat sliding fit, described valve rod afterbody is socketed in the second spring seat, described second spring one end is against on the second spring seat, the described second spring the other end is against on screw plug, described second spring seat and screw plug sliding fit, described screw plug one end is against on valve seat, the described screw plug the other end and valve body are spirally connected, described valve seat is also provided with oil pocket and is communicated with oil circuit, described oil pocket is communicated with vent line through being communicated with oil circuit.
After adopting above structure, manual pilot valve of the present invention compared with prior art, has the following advantages:
Because handle bottom sides of the present invention is directly against on push rod, linkage structure is simple, and only have one lever operated, structure is simpler; By the blind hole in push rod and valve rod head fitted seal, to be coordinated with valve seat by valve rod and realize sealing, compare the resistance that steel ball sealing is subject to little, be less likely to occur to leak, good seal performance; And owing to not needing to overcome the drag effect of high pressure oil to steel ball, and mainly needing to overcome two spring resistances, the resistance be subject to during operating grip is less, lever operated convenience.
As preferably, described valve rod comprises integrated stem head, intermediate bar and valve rod tail, the end of described stem head is provided with first conical surface with blind hole fitted seal, described intermediate bar and valve rod tail joint are provided with second conical surface with the filler opening fitted seal of valve seat, and described valve rod tail end is provided with the arc surface coordinated with the second spring seat; Described valve rod and valve seat sliding fit refer to, the through hole sliding fit on described stem head and valve seat; Gap is left between described intermediate bar and the through hole of valve seat.Described valve rod realizes sealing by two conical surfaces, and sealing effect is better; Valve rod tail end is provided with the arc surface coordinated with the second spring seat and valve rod is not easily worn when moving around, and valve rod is not easily stuck when moving around and not easily damaged.
As preferably, described valve seat comprises oil-feed valve seat, delivery valve seat and oil return valve seat, and described filler opening is located on oil-feed valve seat, and described vent line is located on delivery valve seat, and described oil circuit is located on oil return valve seat; Described oil-feed valve seat is provided with a plastic seat, and described filler opening is located at plastic seat.Described valve seat divides three parts install and process more convenient, and filler opening is located at plastic seat in second conical surface of valve rod and plastic seat fitted seal better effects if, and sealing surface is not easily damaged.
As preferably, described filler opening is taper mouth, and filler opening is that taper mouth can not have influence on sealing effect because of having error and deflection when valve rod and the second taper-face contact seal.
As improvement, described handle outer circumferential face is provided with resilient dust cover, and described dirt-proof boot upper end is fitted on handle, and described dirt-proof boot lower end is fixedly connected with valve body.Stuffing box gland can prevent from dust and other impurities from entering valve body blocking handle or increase the resistance that push rod is subject to when moving, improve the working life of valve.
As preferably, centered by described connection oil circuit, line and the axis with valve rod tilt crossing inclined hole, and described inclined hole is communicated with oil circuit and vent line, and are combined to realize compared with being communicated with of oil pocket and vent line by transverse holes and longitudinal hole, and inclined hole is more easily processed.
Accompanying drawing explanation
It is the structural representation of manual pilot valve of the present invention shown in Fig. 1.
Shown in figure: 1, handle, 2, valve body, 3, push rod, 3.1, blind hole, 3.2, spill port, 4, first spring, 5, first spring seat, 6, valve seat, 6.1, filler opening, 6.2, vent line, 6.3, oil circuit, 6.4, oil pocket, 6.5, be communicated with oil circuit, 6.6, oil-feed valve seat, 6.7, delivery valve seat, 6.8, oil return valve seat, 6.9, plastic seat, 7, valve rod, 7.1, stem head, 7.2, intermediate bar, 7.3, valve rod tail, 7.4, first conical surface, 7.5, second conical surface, 7.6, arc surface, 8, second spring seat, 9, second spring, 10, screw plug, 10.1, oil-feed path, 11, dirt-proof boot, 12, bearing pin.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Refer to shown in Fig. 1, manual pilot valve of the present invention, it comprises handle 1, valve body 2, push rod 3, first spring 4, first spring seat 5, valve seat 6, valve rod 7, second spring seat 8, second spring 9 and screw plug 10, described handle 1 one end is positioned at outside valve body 2, described handle 1 the other end is rotatably connected on the bearing pin 12 in valve body 2 and handle 1 bottom sides is against on push rod 3, described first spring 4 is socketed on boss that on push rod 3 and one end is against push rod 3 and the other end is against on the first spring seat 5, described push rod 3 and valve seat 6 sliding fit, described valve seat 6 is provided with filler opening 6.1, vent line 6.2 and oil circuit 6.3, described screw plug 10 is provided with oil-feed path 10.1, its opening and valve rod 7 head fits is provided with the spill port 3.2 be communicated with or block vent line 6.2 and the blind hole 3.1 of oil circuit 6.3 and be communicated with blind hole 3.1 in described push rod 3, described valve rod 7 and valve seat 6 sliding fit, described valve rod 7 afterbody is socketed in the second spring seat 8, described second spring 9 one end is against on the second spring seat 8, described second spring 9 the other end is against on screw plug 10, described second spring seat 8 and screw plug 10 sliding fit, described screw plug 10 one end is against on valve seat 6, described screw plug 10 the other end and valve body 2 are spirally connected, described valve seat 6 be also provided with oil pocket 6.4 and be communicated with oil circuit 6.5, described oil pocket 6.4 is communicated with vent line 6.2 through being communicated with oil circuit 6.5.Be provided with its opening in described push rod 3 to refer to the blind hole 3.1 of oil circuit 6.3 to be communicated with or to block vent line 6.2 with valve rod 7 head fits, when handle 1 does not lift, leave gap between push rod 3 and valve rod 7, vent line 6.2 is communicated with after blind hole 3.1, spill port 3.2 with oil circuit 6.3; After handle 1 lifts, handle 2 pushes push rod 3 and moves to right, and push rod 3 is pressed on valve rod 7, and the opening of blind hole 3.1 is blocked sealing by valve rod 7 head, and fluid can not enter oil circuit 6.3 from vent line 6.2 through blind hole 3.1, and vent line 6.2 and oil circuit 6.3 are cut off.
Described valve rod 7 comprises integrated stem head 7.1, intermediate bar 7.2 and valve rod tail 7.3, the end of described stem head 7.1 is provided with first conical surface 7.4 with blind hole 3.1 fitted seal, described intermediate bar 7.2 and valve rod tail 7.3 joint are provided with second conical surface 7.5 with filler opening 6.1 fitted seal of valve seat 6, and described valve rod tail 7.3 end is provided with the arc surface 7.6 coordinated with the second spring seat 8; Described valve rod 7 refers to valve seat 6 sliding fit, described stem head 7.1 and the through hole sliding fit on valve seat 6; Gap is left between described intermediate bar 7.2 and the through hole of valve seat 6.
Described valve seat 6 comprises oil-feed valve seat 6.6, delivery valve seat 6.7 and oil return valve seat 6.8, and described filler opening 6.1 is located on oil-feed valve seat 6.6, and described vent line 6.2 is located on delivery valve seat 6.7, and described oil circuit 6.3 is located on oil return valve seat 6.8; Described oil-feed valve seat 6.6 is provided with a plastic seat 6.9, and described filler opening 6.1 is located at plastic seat 6.9.
Described filler opening 6.1 is taper mouth.
Described handle 1 outer circumferential face is provided with resilient dust cover 11, and described dirt-proof boot 11 upper end is fitted on handle 1, and described dirt-proof boot 11 lower end is fixedly connected with valve body 2.
Centered by described connection oil circuit 6.5, line and the axis with valve rod 7 tilt crossing inclined hole, and described inclined hole is communicated with oil circuit 6.5 and vent line 6.2.
When assembling, the center line of valve rod 7 and the center line of push rod 3 are positioned at same axis and can make.
In Fig. 1, under the effect of the second spring 9, second conical surface 7.5 is pressed in plastic seat 6.9, has blocked the filler opening 6.1 of plastic seat 6.9, and vent line 6.2 is communicated with oil circuit 6.3 through the blind hole 3.1 in push rod 3, spill port 3.2; Lift handle 1, bear down on one to the right bottom handle 1 bar 3, push rod 3 moves to right, first spring seat 5 is compressed, push rod 3 promotes valve rod 7 and to move to right together compression second spring 9, blind hole 3.1 and the first conical surface 7.4 fitted seal, second conical surface 7.5 leaves plastic seat 6.9, enters main valve under pressure after the hydraulic oil entered from the oil-feed path 10.1 of screw plug 10 enters oil pocket 6.4 from the filler opening 6.1 of plastic seat 6.9 via connection oil circuit 6.5, vent line 6.2.
Claims (5)
1. a manual pilot valve, it comprises handle (1), valve body (2), push rod (3), first spring (4), first spring seat (5), valve seat (6), valve rod (7), second spring seat (8), second spring (9) and screw plug (10), described handle (1) one end is positioned at valve body (2) outward, described handle (1) the other end bearing pin (12) be rotatably connected in valve body (2) goes up and bottom sides is against on push rod (3), described first spring (4) is socketed on boss that the upper and one end of push rod (3) is against push rod (3) and the other end is against on the first spring seat (5), described push rod (3) and valve seat (6) sliding fit, described valve seat (6) is provided with filler opening (6.1), vent line (6.2) and oil circuit (6.3), described screw plug (10) is provided with the oil-feed path (10.1) be communicated with filler opening (6.1), it is characterized in that: be provided with its opening and valve rod (7) head fits in described push rod (3) with the spill port (3.2) be communicated with or block vent line (6.2) and the blind hole (3.1) of oil circuit (6.3) and be communicated with blind hole (3.1), described valve rod (7) and valve seat (6) sliding fit, described valve rod (7) afterbody is socketed in the second spring seat (8), described second spring (9) one end is against on the second spring seat (8), described second spring (9) the other end is against on screw plug (10), described second spring seat (8) and screw plug (10) sliding fit, described screw plug (10) one end is against on valve seat (6), described screw plug (10) the other end and valve body (2) are spirally connected, described valve seat (6) be also provided with oil pocket (6.4) and be communicated with oil circuit (6.5), described oil pocket (6.4) is communicated with vent line (6.2) through being communicated with oil circuit (6.5),
Described valve rod (7) comprises integrated stem head (7.1), intermediate bar (7.2) and valve rod tail (7.3), the end of described stem head (7.1) is provided with first conical surface (7.4) with blind hole (3.1) fitted seal, described intermediate bar (7.2) and valve rod tail (7.3) joint are provided with second conical surface (7.5) with the filler opening of valve seat (6) (6.1) fitted seal, and described valve rod tail (7.3) end is provided with the arc surface (7.6) coordinated with the second spring seat (8); Described valve rod (7) and valve seat (6) sliding fit refer to, described stem head (7.1) and the through hole sliding fit on valve seat (6); Gap is left between the through hole of described intermediate bar (7.2) and valve seat (6).
2. manual pilot valve according to claim 1, it is characterized in that: described valve seat (6) comprises oil-feed valve seat (6.6), delivery valve seat (6.7) and oil return valve seat (6.8), described filler opening (6.1) is located on oil-feed valve seat (6.6), described vent line (6.2) is located on delivery valve seat (6.7), and described oil circuit (6.3) is located on oil return valve seat (6.8); Described oil-feed valve seat (6.6) is provided with a plastic seat (6.9), and described filler opening (6.1) is located at plastic seat (6.9).
3. manual pilot valve according to claim 2, is characterized in that: described filler opening (6.1) is taper mouth.
4. manual pilot valve according to claim 1, it is characterized in that: described handle (1) outer circumferential face is provided with resilient dust cover (11), described dirt-proof boot (11) upper end is fitted on handle (1), and described dirt-proof boot (11) lower end is fixedly connected with valve body (2).
5. manual pilot valve according to claim 1, it is characterized in that: centered by described connection oil circuit (6.5), line and the axis of valve rod (7) tilt crossing inclined hole, described inclined hole is communicated with oil pocket (6.4) and vent line (6.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310067047.5A CN103195765B (en) | 2013-03-04 | 2013-03-04 | Hand-operated pilot valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310067047.5A CN103195765B (en) | 2013-03-04 | 2013-03-04 | Hand-operated pilot valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103195765A CN103195765A (en) | 2013-07-10 |
| CN103195765B true CN103195765B (en) | 2015-06-24 |
Family
ID=48718503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310067047.5A Active CN103195765B (en) | 2013-03-04 | 2013-03-04 | Hand-operated pilot valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103195765B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317773A (en) * | 2015-11-04 | 2016-02-10 | 宁波长壁流体动力科技有限公司 | Improved type manual pilot valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB672969A (en) * | 1948-10-21 | 1952-05-28 | Climax Rock Drill & Engineering Works Ltd | Improvements relating to control valves for liquids and gases |
| CN2864185Y (en) * | 2005-11-29 | 2007-01-31 | 中煤北京煤矿机械有限责任公司 | Manual lead table control valve |
| CN201606325U (en) * | 2009-12-21 | 2010-10-13 | 胡斌杰 | Pilot valve |
| CN201723519U (en) * | 2010-06-07 | 2011-01-26 | 宁波长壁流体动力科技有限公司 | Manual pilot valve |
| CN203067393U (en) * | 2013-03-04 | 2013-07-17 | 宁波长壁流体动力科技有限公司 | Hand-operated pilot valve |
-
2013
- 2013-03-04 CN CN201310067047.5A patent/CN103195765B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB672969A (en) * | 1948-10-21 | 1952-05-28 | Climax Rock Drill & Engineering Works Ltd | Improvements relating to control valves for liquids and gases |
| CN2864185Y (en) * | 2005-11-29 | 2007-01-31 | 中煤北京煤矿机械有限责任公司 | Manual lead table control valve |
| CN201606325U (en) * | 2009-12-21 | 2010-10-13 | 胡斌杰 | Pilot valve |
| CN201723519U (en) * | 2010-06-07 | 2011-01-26 | 宁波长壁流体动力科技有限公司 | Manual pilot valve |
| CN203067393U (en) * | 2013-03-04 | 2013-07-17 | 宁波长壁流体动力科技有限公司 | Hand-operated pilot valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103195765A (en) | 2013-07-10 |
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