CN203067393U - Hand-operated pilot valve - Google Patents
Hand-operated pilot valve Download PDFInfo
- Publication number
- CN203067393U CN203067393U CN 201320096308 CN201320096308U CN203067393U CN 203067393 U CN203067393 U CN 203067393U CN 201320096308 CN201320096308 CN 201320096308 CN 201320096308 U CN201320096308 U CN 201320096308U CN 203067393 U CN203067393 U CN 203067393U
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- CN
- China
- Prior art keywords
- valve
- seat
- spring
- valve seat
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a hand-operated pilot valve, which comprises a handle, a valve body, a push rod, a first spring, a first spring seat, a valve seat, a valve rod, a second spring seat, a second spring and a screw plug. One end of the handle is rotatably connected with a hinge pin in the valve body, and the side surface of the bottom of the handle abuts against the push rod. The first spring is sleeved onto the push rod, wherein one end of the first spring abuts against a boss on the push rod and the other end of the first spring abuts against the first spring seat. The push rod is slidably matched with the valve seat. The valve seat is provided with an oil inlet, an oil outlet path and an oil return path. The push rod is internally provided with a blind hole and an oil return hole communicated with the blind hole. The valve rod is slidably matched with the valve seat. One end of the second spring abuts against the second spring seat, while the other end of the second spring abuts against the screw plug. The second spring seat is slidably matched with the screw plug. One end of the screw plug abuts against the valve seat, while the other end of the screw plug is threadedly connected with the valve body. An oil cavity is communicated with the oil outlet path through a communicating oil path. The hand-operated pilot valve has the advantages of simple structure, good sealing performance and convenient operation.
Description
Technical field
The present invention relates to a kind of pilot valve, specifically relate to a kind of manual pilot valve.
Background technique
The State Intellectual Property Office website discloses a kind of manual pilot valve, mangetic core assembly, handle, cam-like handle and push rod that this pilot valve comprises valve body, is made of valve rod and two steel balls, cam-like handle one end and handle are hinged, the cam-like handle the other end is connected with push rod, move and open or close oil circuit thereby promote steel ball in the mangetic core assembly by push rod, realize the function of other valves of pilot operated or element.The shortcoming of its existence is: the one, be provided with two handles, and the linkage structure complexity between cam-like handle and the push rod, and cause the complex structure of whole manual pilot valve; The 2nd, the steel ball in the mangetic core assembly leaks when sealing easily, causes sealability bad; The 3rd, because two steel balls still are to contact with high-pressure and hydraulic oil, the resistance that is subjected to during operating grip is still bigger, makes inconvenient operation.
Summary of the invention
Technical problem to be solved by this invention is, a kind of simple in structure, good seal performance and easy to operate manual pilot valve are provided.
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 the valve body, the described handle the other end is rotatably connected on the interior bearing pin of valve body and the handle bottom sides is against on the push rod, described first spring housing is connected on the push rod and an end is against on the boss of push rod and the other end is against on 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 that is communicated with filler opening, being provided with its opening in the described push rod cooperates to be communicated with the valve rod head or blocks vent line and the blind hole of oil circuit and the spill port that is communicated with blind hole, described valve rod and valve seat sliding fit, described valve rod afterbody is socketed in second spring seat, described second spring, one end is against on second spring seat, the described second spring the other end is against on the screw plug, described second spring seat and screw plug sliding fit, described screw plug one end is against on the valve seat, and the described screw plug the other end and valve body are spirally connected; Also be provided with oil pocket on the described valve seat and be 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 directly is against on the push rod, linkage structure is simple, and have only one lever operated, structure is simpler; By the blind hole in the push rod and valve rod head fitted seal, cooperate to realize sealing with valve seat by valve rod, it is little to compare the resistance that steel ball sealing is subjected to, and is not easy to leak good seal performance; And owing to do not need to overcome high pressure oil to the drag effect of steel ball, and mainly need overcome two spring resistances, the resistance that is subjected to during operating grip is littler, 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 the 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 that cooperates with second spring seat; Described valve rod and valve seat sliding fit refer to, the through hole sliding fit on described stem head and the valve seat; Leave the gap between the through hole of described intermediate bar and valve seat.Described valve rod is realized sealing by two conical surfaces, and sealing effect is better; Valve rod tail end is provided with the arc surface that cooperates with second spring seat and makes that valve rod is difficult for being worn when moving around, and valve rod is difficult for being stuck and being difficult for being damaged when moving around.
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 the oil-feed valve seat, and described vent line is located on the delivery valve seat, and described oil circuit is located on the 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 to install and process more convenient, and filler opening is located at plastic seat in second conical surface and the plastic seat fitted seal better effects if of valve rod, and sealing surface is difficult for being damaged.
As preferably, described filler opening is taper mouth, and filler opening is that taper mouth can be because of there being the sum of errors deflection to have influence on sealing effect when valve rod contacts sealing with second conical surface.
As improvement, described handle outer circumferential face is provided with the elasticity dirt-proof boot, and described dirt-proof boot upper end is fitted on the handle, fixedlys connected with valve body in described dirt-proof boot lower end.Stuffing box gland can prevent that dust and other impurities from entering valve body and blocking handle or increase the resistance that is subjected to when push rod moves, the working life of improving valve.
As preferably, the inclined hole that line and axis with valve rod tilt to intersect centered by the described connection oil circuit, described inclined hole is communicated with oil circuit and vent line, with by transverse holes and vertically the hole make up to realize that oil pocket compares the easier processing of inclined hole with the connection of vent line.
Description of drawings
Shown in Figure 1 is the structural representation of the manual pilot valve of the present invention.
Shown in the 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, the oil-feed valve seat, 6.7, delivery valve seat, 6.8, the oil return valve seat, 6.9, plastic seat, 7, valve rod, 7.1, stem head, 7.2, intermediate bar, 7.3, the 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, the oil-feed path, 11, dirt-proof boot, 12, bearing pin.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
See also shown in Figure 1, the 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 ends are positioned at outside the valve body 2, described handle 1 the other end is rotatably connected on the bearing pin 12 in the valve body 2 and handle 1 bottom sides is against on the push rod 3, described first spring 4 is socketed on the push rod 3 and an end is against on the boss of push rod 3 and the other end is against on first spring seat 5, described push rod 3 and valve seat 6 sliding fits, 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, being provided with its opening in the described push rod 3 cooperates to be communicated with valve rod 7 heads or blocks vent line 6.2 and the blind hole 3.1 of oil circuit 6.3 and the spill port 3.2 that is communicated with blind hole 3.1, described valve rod 7 and valve seat 6 sliding fits, described valve rod 7 afterbodys are socketed in second spring seat 8, described second spring, 9 one ends are against on second spring seat 8, described second spring, 9 the other ends are against on the screw plug 10, described second spring seat 8 and screw plug 10 sliding fits, described screw plug 10 1 ends are against on the valve seat 6, and described screw plug 10 the other ends and valve body 2 are spirally connected; Also be provided with oil pocket 6.4 on the described valve seat 6 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 in the described push rod 3 that its opening and valve rod 7 heads cooperate to be communicated with or the blind hole 3.1 of blocking vent line 6.2 and oil circuit 6.3 refers to, when handle 1 does not lift, leave the gap between push rod 3 and the valve rod 7, vent line 6.2 and oil circuit 6.3 are communicated with behind blind hole 3.1, spill port 3.2; After handle 1 lifted, handle 2 pushed push rod 3 and moves to right, and push rod 3 is pressed on the valve rod 7, and the opening of blind hole 3.1 is blocked sealing by valve rod 7 heads, and fluid can not enter oil circuit 6.3 through blind hole 3.1 from vent line 6.2, 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 joints 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 ends are provided with the arc surface 7.6 that cooperates with second spring seat 8; Described valve rod 7 refers to valve seat 6 sliding fits, the through hole sliding fit on described stem head 7.1 and the valve seat 6; Leave the gap between the through hole of described intermediate bar 7.2 and 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 the oil-feed valve seat 6.6, and described vent line 6.2 is located on the delivery valve seat 6.7, and described oil circuit 6.3 is located on the 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 elasticity dirt-proof boot 11, and described dirt-proof boot 11 upper ends are fitted on the handle 1, fixedlys connected with valve body 2 in described dirt-proof boot 11 lower ends.
Line and the inclined hole that tilts to intersect with the axis of valve rod 7 centered by the described connection oil circuit 6.5, described inclined hole is communicated with oil circuit 6.5 and vent line 6.2.
When assembling, the center line of the center line of valve rod 7 and push rod 3 is positioned at same axis can make.
Among Fig. 1, under the effect of second spring 9, second conical surface 7.5 is pressed on the 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, bar 3 bears down on one to the right in handle 1 bottom, push rod 3 moves to right, first spring seat 5 is compressed, push rod 3 promotion valve rods 7 move to right together and compress second spring 9, blind hole 3.1 and first conical surface, 7.4 fitted seal, second conical surface 7.5 leaves plastic seat 6.9, the hydraulic oil that enters from the oil-feed path 10.1 of screw plug 10 from the filler opening 6.1 of plastic seat 6.9 enter behind the oil pocket 6.4 under pressure via be communicated with oil circuit 6.5, vent line 6.2 enters main valve.
Claims (6)
1. 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 outside the valve body (2), described handle (1) the other end is rotatably connected on the interior bearing pin (11) of valve body (2) upward and bottom sides is against on the push rod (3), described first spring (4) is socketed in that push rod (3) is gone up and an end is against on the boss of push rod (3) and the other end is against on 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) that is communicated with filler opening (6.1), it is characterized in that: be provided with its opening in the described push rod (3) and cooperate to be communicated with valve rod (7) head or block vent line (6.2) and the blind hole (3.1) of oil circuit (6.3) and the spill port (3.2) that is communicated with blind hole (3.1), described valve rod (7) and valve seat (6) sliding fit, described valve rod (7) afterbody is socketed in second spring seat (8), described second spring (9) one ends are against on second spring seat (8), described second spring (9) the other end is against on the screw plug (10), described second spring seat (8) and screw plug (10) sliding fit, described screw plug (10) one ends are against on the valve seat (6), and described screw plug (10) the other end and valve body (2) are spirally connected; Also be provided with oil pocket (6.4) on the described valve seat (6) 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).
2. manual pilot valve according to claim 1, it is characterized in that: 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) that cooperates with second spring seat (8); Described valve rod (7) refers to valve seat (6) sliding fit, the through hole sliding fit on described stem head (7.1) and the valve seat (6); Leave the gap between the through hole of described intermediate bar (7.2) and valve seat (6).
3. manual pilot valve according to claim 2, 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 the oil-feed valve seat (6.6), described vent line (6.2) is located on the delivery valve seat (6.7), and described oil circuit (6.3) is located on the 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).
4. manual pilot valve according to claim 3, it is characterized in that: described filler opening (6.1) is taper mouth.
5. manual pilot valve according to claim 1, it is characterized in that: described handle (1) outer circumferential face is provided with elasticity dirt-proof boot (11), and described dirt-proof boot (11) upper end is fitted on the handle (1), and fixedly connected with valve body (2) in described dirt-proof boot (11) lower end.
6. manual pilot valve according to claim 1 is characterized in that: the inclined hole that the axis of line and valve rod (7) tilts to intersect centered by the described connection oil circuit (6.5), described inclined hole connection oil pocket (6.4) and vent line (6.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320096308 CN203067393U (en) | 2013-03-04 | 2013-03-04 | Hand-operated pilot valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320096308 CN203067393U (en) | 2013-03-04 | 2013-03-04 | Hand-operated pilot valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067393U true CN203067393U (en) | 2013-07-17 |
Family
ID=48766183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320096308 Withdrawn - After Issue CN203067393U (en) | 2013-03-04 | 2013-03-04 | Hand-operated pilot valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195765A (en) * | 2013-03-04 | 2013-07-10 | 宁波长壁流体动力科技有限公司 | Hand-operated pilot valve |
-
2013
- 2013-03-04 CN CN 201320096308 patent/CN203067393U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195765A (en) * | 2013-03-04 | 2013-07-10 | 宁波长壁流体动力科技有限公司 | Hand-operated pilot valve |
| CN103195765B (en) * | 2013-03-04 | 2015-06-24 | 宁波长壁流体动力科技有限公司 | Hand-operated pilot valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130717 Effective date of abandoning: 20150624 |
|
| RGAV | Abandon patent right to avoid regrant |