CN201539378U - Modified manual pump - Google Patents
Modified manual pump Download PDFInfo
- Publication number
- CN201539378U CN201539378U CN2009200912100U CN200920091210U CN201539378U CN 201539378 U CN201539378 U CN 201539378U CN 2009200912100 U CN2009200912100 U CN 2009200912100U CN 200920091210 U CN200920091210 U CN 200920091210U CN 201539378 U CN201539378 U CN 201539378U
- Authority
- CN
- China
- Prior art keywords
- oil
- piston
- valve
- sleeve
- piston rod
- 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 discloses a modified manual pump, which comprises a pump body connected with an oil tank. A handle is arranged on the outer side of the pump body, a piston chamber is disposed inside the pump body, an oil outlet one-way valve is communicated with the piston chamber, and a rotary valve communicated with the oil outlet one-way valve is disposed on the pump body. A piston casing pipe is embedded inside the piston chamber, a piston rod is disposed inside the piston casing pipe, and the rear end of the piston rod is hinged with the handle. By arranging the piston casing pipe inside the piston chamber and the piston rod inside the piston casing pipe, the modified manual pump has simple structure, difficult damage, high reliability, long service life and lower utilization cost. A piston ring sleeved at the front end of the piston rod has excellent sealing function to avoid oil and pressure leakage and guarantee utilization effect. An oil outlet sealing ring arranged inside an oil return hole at the radial position on the surface of the rotary valve has fine sealing effect and can prevent oil leakage when releasing oil. An oil inlet groove axially arranged on the surface of the rotary valve is capable of leading an oil inlet hole and an oil outlet hole on the pump body to perform oil-taking simultaneously, thereby having high oil-taking rate.
Description
Technical field
The utility model belongs to the hydraulic machinery technical field, particularly a kind of modified model hand pump.
Background technique
At present, to be that armrest is moving push handle with drive plunger pump oil for hand pump pressurization, damages easily in the reciprocal active procedure of plunger, causes the pump housing to destroy, to such an extent as to phenomenons such as leakage of oil and underpressure occur, working life is short, and security incident easily takes place.In addition, traditional rotary valve or selector valve are when the rotation commutation, and spill port and oil outlet are poorly sealed, and leakage of oil easily pollutes or wastes; Simultaneously, traditional rotary valve or selector valve can only hole oil-feeds, and oil-feed speed is low.
The model utility content
The purpose of this utility model provides a kind of modified model hand pump, its simple in structure, safe and reliable, long service life.
For achieving the above object, the technical solution of the utility model is: a kind of modified model hand pump, comprise the pump housing that is connected with oil tank, the pump housing outside is provided with handle, is provided with piston cavity in the pump housing, and communicating with piston cavity is provided with fuel-displaced one-way valve, on the pump housing, also be provided with the rotary valve that communicates with fuel-displaced one-way valve, inlay in the described piston cavity and be provided with piston sleeve, be provided with piston rod in the piston sleeve, piston rod rear end and handle are hinged.
Described piston rod front end sleeve is provided with piston ring.
The spill port that offers axially and radially be connected on the described rotary valve is provided with fuel-displaced seal ring in the spill port of radial position, axially have an oil-feed tank with the spill port of radial position is separated by several angle on the rotary valve surface.
Be provided with pressure-limit valve in the described oil tank, pressure-limit valve is connected with fuel-displaced one-way valve, and described pressure-limit valve comprises sleeve, is provided with ball in the sleeve, and ball is by stage clip and jackscrew roof pressure, and sleeve is provided with oil leaking hole.
Described pressure-limit valve is connected by unloading hole with fuel-displaced one-way valve, and ball diameter is greater than the unloading hole diameter.
The utility model is provided with piston sleeve and interior piston rod thereof in piston cavity, simple in structure, and is not fragile, the reliability height, and long service life, user cost is low.At the sheathed piston ring of piston rod front end, play the excellent sealing effect, prevent leakage of oil, leak and press, guarantee using effect.Be provided with fuel-displaced seal ring in the spill port of rotary valve radial surface position, good sealing effect prevents leakage of oil when draining the oil; Axially have oil-feed tank on the rotary valve surface, can make oil inlet hole and oil outlet oil-feed simultaneously on the pump housing, oil-feed speed height.The purpose that pressure-limit valve has reached the pressure limiting off-load is set in oil cylinder, and it is simple in structure, reliability is high, cost is low, does not need the additional maintenance management, and is not fragile, safe in utilization, convenient.Jackscrew is built in the sleeve, can to realize the different intensity of pressure in the pump housing, regulate simple and reliable to the elastic force size free adjustment of stage clip.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that the A of rotary valve among Fig. 1 is to schematic representation;
Fig. 3 is the structural representation of pressure-limit valve among Fig. 1.
Embodiment
As Fig. 1, Fig. 2, modified model hand pump shown in Figure 3, comprise the pump housing 1, be provided with oil tank 2, the hinged handle 8 that is provided with of a side on the pump housing 1 top, oil tank 2 is fixedly installed on the pump housing 1, on the pump housing 1, be provided with piston cavity 4, oil hole 5, rotary valve 9, fuel-displaced one-way valve 10 and oil outlet a, filler opening b (selector valve 9 commutation backs for oil outlet b, filler opening a), rotary valve 9 communicates with fuel-displaced one-way valve 10 and oil outlet a, filler opening b, and piston cavity 4 communicates with fuel-displaced one-way valve 10.Fuel-displaced one-way valve 10 is a prior art, repeats no more.In piston cavity 4, inlay and be provided with piston sleeve 3, be provided with the locking bearing pin that radially contacts with piston sleeve 3 on the pump housing 1 top, be provided with piston rod 6 in the piston sleeve 3, the rear end of piston rod 6 and handle 8 are hinged, to-and-fro motion by handle 8 application pistons 6, can overcome the flimsy defective of piston rod 6 to-and-fro motion, increase the service life; Front end sleeve at piston rod 6 is provided with piston ring 18, and piston ring 18 can adopt YX circle, good sealing effect especially.The spill port 91 that on rotary valve 9, offers axially and radially be connected, different with traditional approach, be provided with in the spill port 91 of radial position from the fuel-displaced seal ring 92 of benefit property, in case leak-stopping oil, on rotary valve 9 surfaces, axially have an oil-feed tank 93 with the spill port 91 of radial position is separated by several angle, make oil inlet hole b and oil outlet a oil-feed simultaneously, increased oil inlet passage, improve oil-feed speed; Simultaneously, in order to improve seal, on rotary valve 9, also be provided with seal ring 94.Angle between spill port 91 and the oil-feed tank 93 is 90 °, also can take other angles.Oil tank 2 inside are provided with pressure-limit valve 11, pressure-limit valve 11 is fixed on the pump housing 1, this pressure-limit valve 11 comprises sleeve 12, sleeve 12 is provided with oil leaking hole 16, be provided with ball 13 in sleeve 12 inside, ball 13 is by the stage clip 14 of top and jackscrew 15 roof pressures, on the pump housing 1 below the ball 13, be provided with unloading hole 17, unloading hole 17 leads to fuel-displaced one-way valve 10, be connected by unloading hole 17 between pressure-limit valve 11 and the fuel-displaced one-way valve 10, the diameter of ball 13 is greater than the diameter of unloading hole 17, and ball 13 can not fallen in the fuel-displaced one-way valve 10 by unloading hole 17, utilizes the following disc sealing unloading hole 17 of ball 13.
Be not limited to above-mentioned mode of execution, the pressure-limit valve 11 that the utility model uses not only can adopt ball valve, also can adopt needle-valve.
Claims (5)
1. modified model hand pump, comprise the pump housing that is connected with oil tank, the pump housing outside is provided with handle, be provided with piston cavity in the pump housing, communicating with piston cavity is provided with fuel-displaced one-way valve, also is provided with the rotary valve that communicates with fuel-displaced one-way valve on the pump housing, it is characterized in that: inlay in the described piston cavity and be provided with piston sleeve, be provided with piston rod in the piston sleeve, piston rod rear end and handle are hinged.
2. modified model hand pump as claimed in claim 1 is characterized in that: described piston rod front end sleeve is provided with piston ring.
3. modified model hand pump as claimed in claim 1 or 2, it is characterized in that: the spill port that offers axially and radially be connected on the described rotary valve, be provided with fuel-displaced seal ring in the spill port of radial position, on the rotary valve surface, axially have an oil-feed tank with the spill port of radial position is separated by several angle.
4. modified model hand pump as claimed in claim 3 is characterized in that: be provided with pressure-limit valve in the described oil tank, pressure-limit valve is connected with fuel-displaced one-way valve, described pressure-limit valve comprises sleeve, be provided with ball in the sleeve, ball is by stage clip and jackscrew roof pressure, and sleeve is provided with oil leaking hole.
5. modified model hand pump as claimed in claim 4 is characterized in that: described pressure-limit valve is connected by unloading hole with fuel-displaced one-way valve, and ball diameter is greater than the unloading hole diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200912100U CN201539378U (en) | 2009-06-30 | 2009-06-30 | Modified manual pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200912100U CN201539378U (en) | 2009-06-30 | 2009-06-30 | Modified manual pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201539378U true CN201539378U (en) | 2010-08-04 |
Family
ID=42590829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200912100U Expired - Fee Related CN201539378U (en) | 2009-06-30 | 2009-06-30 | Modified manual pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201539378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828945A (en) * | 2012-02-06 | 2012-12-19 | 上海中欧汽车电器有限公司 | Distributing shaft and manual hydraulic pump provided with same |
-
2009
- 2009-06-30 CN CN2009200912100U patent/CN201539378U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828945A (en) * | 2012-02-06 | 2012-12-19 | 上海中欧汽车电器有限公司 | Distributing shaft and manual hydraulic pump provided with same |
| CN102828945B (en) * | 2012-02-06 | 2015-06-03 | 上海中欧汽车电器有限公司 | Distributing shaft and manual hydraulic pump provided with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20120630 |