CN102678538A - Soft sealing mechanism of manual hydraulic pump - Google Patents
Soft sealing mechanism of manual hydraulic pump Download PDFInfo
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- CN102678538A CN102678538A CN2012101928013A CN201210192801A CN102678538A CN 102678538 A CN102678538 A CN 102678538A CN 2012101928013 A CN2012101928013 A CN 2012101928013A CN 201210192801 A CN201210192801 A CN 201210192801A CN 102678538 A CN102678538 A CN 102678538A
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- valve seat
- spool
- oil
- soft seal
- hydraulic pump
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Abstract
The invention relates to a soft sealing mechanism of a manual hydraulic pump, and in particular relates to pressure maintaining sealing used for the manual hydraulic pump, belonging to the technical field of hydraulic equipment. The soft sealing mechanism mainly comprises a pump cylinder, an oil absorption one-way valve, a spring, a valve core, a soft sealing ring, a valve seat and a hydraulic pump body. A first oil hole channel and a second oil hole channel are respectively arranged in the hydraulic pump body, an oil inlet hole channel is arranged between the inner cavity of the pump cylinder and the first oil hole channel, the valve seat and the valve core of an oil pressure one-way valve are sequentially connected in the oil inlet hole channel, the soft sealing ring is installed on an excircle of a lug boss between the valve seat and the valve core, and the valve seat and the valve core are sealed by the soft sealing ring. The soft sealing mechanism has a simple, compact and reasonable structure, the sealing performance of the soft sealing structure is good, pressure oil leakage caused by the traditional hard sealing structure is avoided, the cost is low, and the use is convenient.
Description
Technical field
The present invention relates to a kind of soft seal mechanism of hydraulic hand-pump, specifically be used for the pressurize sealing of hand-hydraulic valve, belong to the hydraulic equipment technical field.
Background technique
Emergency power output under the debugging and the state of emergency has obtained extensively diversely using hydraulic hand-pump as hydraulic system; Its working principle is to shake handle to drive piston reciprocates; Through the order opening and closing of two one-way valves, accomplish the process of the oil suction and the hydraulic oil of certain volume of output and pressure.
The pressure oil one-way valve of present hydraulic hand-pump; The hard sealing structure that all adopts steel ball or metal awl guiding valve under spring and fluid pressure action, to contact with the aperture of metal seat valve; Because the precision of the cutting of Metal Contact face is limited, therefore be difficult to the phenomenon of stopping a leak.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of soft sealing structure of hydraulic hand-pump is provided: be provided with the oil-feed duct between the pump barrel inner chamber and the first oilhole road, connect the valve seat and the spool of pressing oily one-way valve in the oil-feed duct successively; Valve seat and spool adopt raised head face contact seal; And installed the soft seal circle additional at boss cylindrical position, and sealing is strengthened, and the pressure oil of having avoided traditional hard sealing structure to cause leaks; Simple in structure, cost is low.
According to technological scheme provided by the invention, the soft seal mechanism of hydraulic hand-pump mainly comprises pump barrel, hydraulic pump body, switch valve seat, spring, spool, soft seal circle and valve seat.Through the pump barrel that is threaded, be respectively equipped with first oilhole road that communicates with oil cylinder and the second oilhole road that communicates with fuel tank in the hydraulic pump body upper end in the hydraulic pump body.Be provided with the oil-feed duct between the said pump barrel inner chamber and the first oilhole road.
Said hydraulic pump body right-hand member connects the switch valve seat through bolt, is provided with the switch valve pocket in the switch valve seat.The said first oilhole road all communicates with the switch valve pocket with the second oilhole road.Be provided with the oil-feed duct between the said pump barrel inner chamber and the first oilhole road, connect the valve seat and the spool of pressing oily one-way valve in the oil-feed duct successively, the soft seal circle is installed between valve seat and the spool.Connect through spring between spool and the hydraulic pump body.
Preferably, the boss cylindrical position of said valve seat is provided with the valve seat circular groove, connects the soft seal circle in the valve seat circular groove.Said valve seat is provided with the valve seat groove, embeds the soft seal circle in the valve seat groove.The boss cylindrical position of said spool is provided with the spool circular groove, connects the soft seal circle in the spool circular groove.Said spool is provided with the spool groove, embeds the soft seal circle in the spool groove.
The present invention is simple, compact and reasonable for structure; The sealability of the soft sealing structure of the pressure oil one-way valve of hydraulic hand-pump is better, and the pressure oil of having avoided traditional hard sealing structure to cause leaks; Cost is low, and is easy to use.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 presses oily one-way valve schematic representation for embodiment's one soft seal.
Fig. 3 presses oily one-way valve schematic representation for embodiment's two soft seals.
Fig. 4 presses oily one-way valve schematic representation for embodiment's three soft seals.
Fig. 5 presses oily one-way valve schematic representation for embodiment's four soft seals.
Description of reference numerals: 1-pump barrel, 2-hydraulic pump body, 3-switch valve seat, 4-switch valve pocket, 5-oil-feed duct, the 6-second oilhole road, the 7-first oilhole road, 8-spring, 9-spool, 9-1-spool circular groove, 9-2-spool groove, 10-soft seal circle, 11-valve seat, 11-1-valve seat circular groove, 11-2-valve seat groove.
Embodiment
Following the present invention will combine the embodiment in the accompanying drawing to further describe:
As shown in Figure 1, the present invention mainly comprises pump barrel 1, hydraulic pump body 2, switch valve seat 3, spring 8, spool 9, soft seal circle 10 and valve seat 11.
Through the pump barrel 1 that is threaded, be respectively equipped with first oilhole road 7 that communicates with oil cylinder and the second oilhole road 6 that communicates with fuel tank in hydraulic pump body 2 upper ends in the hydraulic pump body 2.Be provided with oil-feed duct 5 between said pump barrel 1 inner chamber and the first oilhole road 7.
Said hydraulic pump body 2 right-hand members connect switch valve seat 3 through bolt, are provided with switch valve pocket 4 in the switch valve seat 3.The said first oilhole road 6 all communicates with switch valve pocket 4 with the second oilhole road 7.
Be provided with oil-feed duct 5 between said pump barrel 1 inner chamber and the first oilhole road 7, connect the valve seat 11 and spool 9 of pressing oily one-way valve in the oil-feed duct 5 successively, soft seal circle 10 is installed between valve seat 11 and the spool 9.Connect through spring 8 between spool 9 and the hydraulic pump body 2.
Embodiment one as shown in Figure 2, the boss cylindrical position of said valve seat 11 is provided with valve seat circular groove 11-1, connects soft seal circle 10 among the valve seat circular groove 11-1.
Embodiment two as shown in Figure 3, said valve seat 11 is provided with valve seat groove 11-2, embeds soft seal circle 10 among the valve seat groove 11-2.
Embodiment three as shown in Figure 4, the boss cylindrical position of said spool 9 is provided with spool circular groove 9-1, connects soft seal circle 10 among the spool circular groove 9-1.
Embodiment four as shown in Figure 5, said spool 9 is provided with spool groove 9-2, embeds soft seal circle 10 among the spool groove 9-2.
Working principle of the present invention is: when the hydraulic hand-pump oil suction, piston moves upward and produces negative pressure and open oil sucting one-way valve, and the fluid in the fuel tank is through in the second oilhole road 6, switch valve pocket 4 and the oil suction duct suction pump tube 1.When hand-hydraulic pump pressure oil; Piston moves downward; Pressure oil gets into oil-feed duct 5 through the valve seat 11 of pressing oily one-way valve, overcomes the hydraulic coupling and the spring force that act on the spool 9 of pressing oily one-way valve then, promotes spool 9 and moves downward; The pressure oil of top gets into the first oilhole road 7 through spool 9, finally gets into oil cylinder.
When fuel feeding stopped, the hydraulic coupling and the spring force that acting on spool 9 belows moved upward spool 9, the end face of spool 9 contact with the raised head face of valve seat 11 form hard sealing and through soft seal circle 10 with sealing between spool 9 and the valve seat 10.In the liquid under pressure into a soft seal 10 step deformation, snapping the metal spool 9 and metal sealing surface of the valve seat 11 contacts, plug the leak path, to eliminate the pressure oil leak purposes.When the needs oil cylinder resets, unscrew switch valve.Under external force, in-oil cylinder pressure oil is pushed the switch one-way valve open and is flowed back to fuel tank through the second oilhole road 6.
The present invention is simple for structure, owing to eliminated the leakage of the valve seat of pressing oily one-way valve and the pressure oil of the contact position of spool, so be particularly suitable for requiring the hydraulic system of pressurize.
Claims (5)
1. the soft seal mechanism of a hydraulic hand-pump; Comprise pump barrel (1) and hydraulic pump body (2); Through the pump barrel that is threaded (2), be respectively equipped with first oilhole road (7) that communicates with oil cylinder and the second oilhole road (6) that communicates with fuel tank in hydraulic pump body (2) upper end in the hydraulic pump body (2); Be provided with oil-feed duct (5) between said pump barrel (1) inner chamber and the first oilhole road (7); It is characterized in that: the valve seat (11) that also comprises spring (8), the spool (9) of pressing oily one-way valve, soft seal circle (10) and the oily one-way valve of pressure; Connect valve seat (11) and spool (9) in the said oil-feed duct (5) successively; Between valve seat (10) and the spool (9) soft seal circle (10) is installed, connects through spring (8) between spool (9) and the hydraulic pump body (2);
Said hydraulic pump body (2) right-hand member connects switch valve seat (3) through bolt, and switch valve seat (3) inboard is provided with switch valve pocket (4); The said first oilhole road (7) and the second oilhole road (6) all communicate with switch valve pocket (4).
2. the soft seal mechanism of hydraulic hand-pump as claimed in claim 1, it is characterized in that: the boss cylindrical position of said valve seat (11) is provided with valve seat circular groove (11-1), connects soft seal circle (10) in the valve seat circular groove (11-1).
3. the soft seal mechanism of hydraulic hand-pump as claimed in claim 1, it is characterized in that: said valve seat (11) is provided with valve seat groove (11-2), embeds soft seal circle (10) in the valve seat groove (11-2).
4. the soft seal mechanism of hydraulic hand-pump as claimed in claim 1, it is characterized in that: the boss cylindrical position of said spool (9) is provided with spool circular groove (9-1), connects soft seal circle (10) in the spool circular groove (9-1).
5. the soft seal mechanism of hydraulic hand-pump as claimed in claim 1, it is characterized in that: said spool (9) is provided with spool groove (9-2), embeds soft seal circle (10) in the spool groove (9-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101928013A CN102678538A (en) | 2012-06-12 | 2012-06-12 | Soft sealing mechanism of manual hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101928013A CN102678538A (en) | 2012-06-12 | 2012-06-12 | Soft sealing mechanism of manual hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102678538A true CN102678538A (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101928013A Pending CN102678538A (en) | 2012-06-12 | 2012-06-12 | Soft sealing mechanism of manual hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102678538A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986983A (en) * | 2015-03-02 | 2016-10-05 | 富阳通力机械制造有限公司 | Novel ultrahigh-pressure hydraulic manual pump |
| CN110939618A (en) * | 2019-12-26 | 2020-03-31 | 许尚志 | Pressure maintaining type single-action hydraulic manual mechanism |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4515253A (en) * | 1982-04-16 | 1985-05-07 | Kabushiki Kaisha Showa Seisakusho | Damping force generating device for an oil damper |
| EP0606980A2 (en) * | 1993-01-11 | 1994-07-20 | Zymark Corporation | Liquid chromatography system |
| JP2005315230A (en) * | 2004-04-30 | 2005-11-10 | Fuji Techno:Kk | Manual pump |
| CN200985794Y (en) * | 2006-12-22 | 2007-12-05 | 郑州恒达液压工程中心 | Liquid return circuit turnoff valve |
| CN201031829Y (en) * | 2007-04-30 | 2008-03-05 | 张介民 | Compound oil cylinder cylinder rod operation gear changes |
| JP2010077950A (en) * | 2008-09-29 | 2010-04-08 | Mitsubishi Heavy Ind Ltd | Valve device for internal combustion engine |
| CN201687982U (en) * | 2010-06-10 | 2010-12-29 | 沃泰阀门(昆山)有限公司 | Hard and soft dual seal fixed ball valve |
| CN201810815U (en) * | 2010-09-17 | 2011-04-27 | 张彪 | Compositive manifold control switch |
| CN102147028A (en) * | 2011-04-15 | 2011-08-10 | 王元清 | Low-pressure pilot operated safety valve |
| CN102410168A (en) * | 2011-09-20 | 2012-04-11 | 三一重工股份有限公司 | Pumping mechanism and concrete pumping device |
-
2012
- 2012-06-12 CN CN2012101928013A patent/CN102678538A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4515253A (en) * | 1982-04-16 | 1985-05-07 | Kabushiki Kaisha Showa Seisakusho | Damping force generating device for an oil damper |
| EP0606980A2 (en) * | 1993-01-11 | 1994-07-20 | Zymark Corporation | Liquid chromatography system |
| JP2005315230A (en) * | 2004-04-30 | 2005-11-10 | Fuji Techno:Kk | Manual pump |
| CN200985794Y (en) * | 2006-12-22 | 2007-12-05 | 郑州恒达液压工程中心 | Liquid return circuit turnoff valve |
| CN201031829Y (en) * | 2007-04-30 | 2008-03-05 | 张介民 | Compound oil cylinder cylinder rod operation gear changes |
| JP2010077950A (en) * | 2008-09-29 | 2010-04-08 | Mitsubishi Heavy Ind Ltd | Valve device for internal combustion engine |
| CN201687982U (en) * | 2010-06-10 | 2010-12-29 | 沃泰阀门(昆山)有限公司 | Hard and soft dual seal fixed ball valve |
| CN201810815U (en) * | 2010-09-17 | 2011-04-27 | 张彪 | Compositive manifold control switch |
| CN102147028A (en) * | 2011-04-15 | 2011-08-10 | 王元清 | Low-pressure pilot operated safety valve |
| CN102410168A (en) * | 2011-09-20 | 2012-04-11 | 三一重工股份有限公司 | Pumping mechanism and concrete pumping device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986983A (en) * | 2015-03-02 | 2016-10-05 | 富阳通力机械制造有限公司 | Novel ultrahigh-pressure hydraulic manual pump |
| CN105986983B (en) * | 2015-03-02 | 2018-10-09 | 富阳通力机械制造有限公司 | A kind of Ultra-high Pressure Hand Pump |
| CN110939618A (en) * | 2019-12-26 | 2020-03-31 | 许尚志 | Pressure maintaining type single-action hydraulic manual mechanism |
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Application publication date: 20120919 |