CN2605443Y - Unloading over-flow valve of hydraulic jack - Google Patents
Unloading over-flow valve of hydraulic jack Download PDFInfo
- Publication number
- CN2605443Y CN2605443Y CN 03219407 CN03219407U CN2605443Y CN 2605443 Y CN2605443 Y CN 2605443Y CN 03219407 CN03219407 CN 03219407 CN 03219407 U CN03219407 U CN 03219407U CN 2605443 Y CN2605443 Y CN 2605443Y
- Authority
- CN
- China
- Prior art keywords
- valve
- adjustable lever
- hydraulic jack
- valve body
- thread bush
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to the hydraulic jack structure improving technical field, which is to provide a novel hydraulic jack unloading relief valve and composed of a valve seat, a valve body, a ball valve, an adjustable lever, a thread bushing, an elastomer, a clasp, a hand wheel and so on. In the utility model, the clockwise and anti-clockwise rotations of the thread bushing are driven through the clockwise and anti-clockwise rotations of the hand wheel, so that the adjustable lever can be in left or right movement to compress or release the ball valve for the purpose that the valve can be in a shut or unlock state. The advantages of the utility model are that the adjustable lever is only for left-and-right movement and not for radial rotation in the valve so that the abrasion and the technical difficulty of metal processing are reduced. The utility model is easy to use with long service life.
Description
Technical field
The utility model belongs to communications and transportation and promotes class, relates to jack structure and improves technical field.
Technical background
The hydraulic jack unloading overflow valve is a commonly used and indispensable key device in all types of hydraulic jack productions and the use.In the past the hydraulic jack unloading overflow valve of Sheng Chaning as shown in Figure 1, it mainly is made up of valve seat (1), valve body (2), ball valve (3), adjustable lever (4), seal ring (5) and handwheel (9).In use, handwheel (9) is rotated in a clockwise direction, drive adjustable lever (4) rotates and is moved to the left, and ball valve (3) is pushed up on the drain mouth of pipe of tangible valve seat (1), forms the closed condition of this valve.Handwheel (9) is rotated in a counter-clockwise direction, and drive adjustable lever (4) despining also moves right, and at this moment just forms the off-load overflow situation.For preventing that hydraulic oil from flowing out from the thread pitch of adjustable lever (4), promptly taked to add a seal ring (5) at the polished rod place.This valve has quite high same core degree requirement to valve body (2), adjustable lever (4) in process of production, and the endoporus of valve body (2) and seal ring (5) do circumference and rotate to add and move axially, and the roughness to valve body (2) surface of contact during friction also has strict requirement; Be blind hole with this surface of contact again, bring certain difficulty at this moment just for the gold machining of valve body (2).In actual using process, the user is being ignorant of under the situation of structure as adjustable lever (4) is being screwed out fully, and the high pressure oil of oil cylinder inside and gas together spray ball valve (3); Then, the user loses because of ball valve (3) not only under being ignorant of situation but also with in adjustable lever (4) the screw-in valve body (2), causes the artificial damage of this valve.
Summary of the invention
The technical problems to be solved in the utility model is to have proposed a kind of new type hydraulic jack unloading overflow valve for overcoming the above-mentioned defective that exists.It is made up of valve seat, valve body, ball valve, adjustable lever, seal ring, elastomer, snap ring, thread bush, handwheel and flow-off.Valve body is fixed on the valve seat, has flow-off between valve body and the valve seat.Adjustable lever places valve body and with one heart, and the ball valve in the valve seat is pressed on the adjustable lever left side and the right contacts with handwheel by thread bush, and thread bush is movably connected in the valve body right-hand member, and thread bush fuses with handwheel again.Be with elastomer and snap ring on the valve inner adjustable lever that flexibly connects with thread bush, snap ring is to be stuck on the valve interior wall.The Kong Xianwei through-hole structure that rubs mutually with the adjustable lever seal ring.When handwheel turns clockwise, drive thread bush and turn clockwise, because of the thread bush activity is contained on the valve body, also progressively be moved to the left at thread bush up time rotation while thread bush.Thereby the adjustable lever that will be close to thread bush is moved to the left and presses to ball valve, makes ball valve compress the fluid guidance port on the valve seat and makes valve be closed condition.When handwheel is rotated counterclockwise, drive thread bush and be rotated counterclockwise, thereby thread bush is rotated counterclockwise also progressively move right simultaneously and breaks away from adjustable lever, and adjustable lever under the elastomer active force to the right trace move.Elastomer is according to using the available elastic washer of needs, spring and polyester circle etc.Moving right of adjustable lever makes ball valve loose in valve seat, and high-pressure and hydraulic oil enters in the valve body by oil diverting port on the valve seat, and at this moment step-down makes valve be opening state by the discharge of the flow-off on the valve body.
The utility model hydraulic jack unloading overflow valve is owing to increased thread bush, elastomer on prior art.When making Guan Kaifa, its adjustable lever do not rotate and about only doing trace move, reduce to rub between adjustable lever and the valve body, also reduced adjustable lever and valve body finishing technology difficulty.Again because adjustable lever and thread bush also reduce concentricity requirement in the gold machining for dividing body structure, change existing through hole owing to having improved valve body and seal ring friction position into by original blind hole again, help the processing of hole precision and reduced abrasion, guarantee sealing, increase the service life seal ring.Again owing to increase snap ring, when maintenance, prevent arbitrarily dismounting and damage.
Description of drawings
Fig. 1 is the prior art structural representation;
Fig. 2 is the utility model hydraulic jack unloading overflow valve structural representation;
In Fig. 1, Fig. 2: the 1-valve seat; The 2-valve body; The 3-ball valve; The 4-adjustable lever; The 5-seal ring; The 6-elastomer, a kind of in available elastic washer, spring, the polyester circle; The 7-snap ring; The 8-thread bush; The 9-handwheel; The 10-flow-off.
Embodiment
See Fig. 2: the number of assembling steps of the utility model hydraulic jack unloading overflow valve is as follows:
1, each parts is made or chosen by figure;
2, valve body (2) is fixed on the valve seat (1);
3, ball valve (3) is placed on the fluid guidance port of valve seat (1);
4, seal ring (5) is enclosed within adjustable lever (4) appropriate location;
5, elastomer (6) is inserted on the adjustable lever (4);
6, the adjustable lever (4) that will be with seal ring (5) elastomer and (6) is packed in the valve body (2);
7, load onto snap ring (7);
8, handwheel (9) and thread bush (8) is fixing;
9, the thread bush (8) of on valve body (2), screwing on.
The operating process of the utility model hydraulic jack unloading overflow valve is as follows:
1, the handwheel (9) that turns clockwise drives thread bush (8) and also turn clockwise, and thread bush (8) also progressively is moved to the left;
2, because thread bush (8) is moved to the left, compressing adjustable lever (4) also is moved to the left adjustable lever (4);
3, because adjustable lever (4) is moved to the left, compressing ball valve (3) makes ball valve (3) roof pressure valve seat (1) go up fluid guidance port, makes whole system be closed condition.
4, be rotated counterclockwise handwheel (9), drive thread bush (8) and also be rotated counterclockwise, and thread bush (8) also progressively move right;
5, because thread bush (8) moves right, the power of compressing adjustable lever (4) disappears, and under the elastic force of elastomer (6), adjustable lever (4) is also moved right;
6, move right owing to adjustable lever (4), the power of compressing ball valve (3) disappears, under the thrust of hydraulic jack inner high voltage oil, the lift off a seat fluid guidance port of (1) of ball valve (3), the interior high pressure oil of hydraulic jack is entered in the valve body (2) by the fluid guidance port of valve seat (1), discharge through flow-off (10) again.Make whole system be opening state.
Claims (3)
1, a kind of hydraulic jack unloading overflow valve, it is by valve seat (1), valve body (2), ball valve (3), adjustable lever (4), seal ring (5) and handwheel (9) are formed, valve body (2) is fixed on the valve seat (1), adjustable lever (4) places valve body (2), ball valve (3) is pressed on adjustable lever (4) left side and the right contacts with handwheel (9), it is characterized in that adjustable lever (4) the right contacts with handwheel (9) by thread bush (8), turnbuckle (8) is movably connected in valve body (2) right-hand member, handwheel (9) is fixed into one with thread bush (8),, and be with elastomer (6) on the adjustable lever (4) in thread bush (8) and valve body (2) joint.
2,, it is characterized in that elastomer (6) right-hand member on the adjustable lever (4) in thread bush (8) and valve body (2) joint is equipped with snap ring (7) according to the described hydraulic jack unloading overflow valve of claim 1.
3,, it is characterized in that the hole employing through-hole structure that rubs mutually with seal ring (5) according to the described hydraulic jack unloading overflow valve of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03219407 CN2605443Y (en) | 2003-01-17 | 2003-01-17 | Unloading over-flow valve of hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03219407 CN2605443Y (en) | 2003-01-17 | 2003-01-17 | Unloading over-flow valve of hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2605443Y true CN2605443Y (en) | 2004-03-03 |
Family
ID=34161221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03219407 Expired - Fee Related CN2605443Y (en) | 2003-01-17 | 2003-01-17 | Unloading over-flow valve of hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2605443Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975125A (en) * | 2010-10-09 | 2011-02-16 | 南京理工大学 | Device for measuring linear burning rate of liquid propellant in high pressure environment |
-
2003
- 2003-01-17 CN CN 03219407 patent/CN2605443Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975125A (en) * | 2010-10-09 | 2011-02-16 | 南京理工大学 | Device for measuring linear burning rate of liquid propellant in high pressure environment |
| CN101975125B (en) * | 2010-10-09 | 2013-06-05 | 南京理工大学 | Device for measuring linear burning rate of liquid propellant in high pressure environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |