CN201218171Y - Unidirectional hydraulic axial variable displacement plunger pump - Google Patents
Unidirectional hydraulic axial variable displacement plunger pump Download PDFInfo
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- CN201218171Y CN201218171Y CNU2008201211813U CN200820121181U CN201218171Y CN 201218171 Y CN201218171 Y CN 201218171Y CN U2008201211813 U CNU2008201211813 U CN U2008201211813U CN 200820121181 U CN200820121181 U CN 200820121181U CN 201218171 Y CN201218171 Y CN 201218171Y
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Abstract
The utility model relates to a unidirectional hydraulic-operated variable axial plunger pump which comprises a plunger pump body and a variable mechanism arranged at one side of the plunger pump body. The unidirectional hydraulic-operated variable axial plunger pump is characterized in that the variable mechanism also comprises a first flange (21), a second flange (23), a variable piston (5), a reset spring (22), a transition plate (22) and an electromagnetic directional valve (1),wherein both ends of the variable piston (5) are respectively connected with the first flange (21) and the second flange (23) through a seal way to respectively form a first oil chamber (A) and a second oil chamber (B), and the bottom part of the variable piston (5) is connected with a variable tray (6) arranged in the plunger pump body; and the transition plate (2) is arranged outside a pump body (3) of the plunger pump body. Compared with the prior art, the utility model has the advantages that the oil flow can be regulate and controlled through the electromagnetic directional valve so as to satisfy the regulation of the delivery capacity of the plunger pump, the control is simple, the corresponding action is fast, the reliability is favorable, and the action requirements of a glass fibre-reinforced plastic hydraulic machine can be fully satisfied.
Description
Technical field
The utility model relates to a kind of unidirectional hydraulic axial variable displacement plunger pump.
Background technique
Last century, the seventies came, in order to save the energy, external hydraulic transmission control system transfers research to by the pump displacement controlled hydraulic system, afterwards in the hydraulic system by traditional valve control hydraulic system, novel axial variable displacement plunger pump is able to a large amount of uses, for important function has been played in the national economic development.Specifically can be with reference to Chinese utility model patent: ZL200320123474.2, a kind of " internal controlling electrohydraulic proportion variable axial plunger pump " (notice of authorization number: CN2667194Y) is disclosed, this patent variable partly adopts the mobile upper and lower cavity that makes the oily entering variable piston in the reduction valve of the electrorheological chemical control system pilot valve of proportion electro-magnet, thereby makes the variable piston up-down come the motion of controlled variable head to realize the variable of pump.And for example the patent No. is Chinese utility model patent " the axial variable plunger pump " (notice of authorization number: CN200952456Y) adopted proportional electromagnetic valve and internal control oil circuit to realize of ZL200620079670.8.
But because the diversity of open circuit is difficult to realize standardization, for example: in the glass fibre reinforced plastics hydraulic press, requirement is to plunger pump: being big discharge capacity before the matched moulds, be little discharge capacity during the matched moulds compacting, and big or small discharge capacity is adjustable, the repeatability height.Traditional control system implementation combines for adopting a low pressure and mass flow pump and a high-pressure low-flow pump to add a unidirectional unloading valve component of low pressure.There are deficiencies such as the motive force power utilization is not high, control is loaded down with trivial details, system reliability is poor, energy-saving effect is undesirable in this scheme.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of to flow to the unidirectional hydraulic axial variable displacement plunger pump that moves with realization variable piston at above-mentioned prior art present situation by four-way electromagnetic reversing valve control oil, is particularly suitable for being applied in the glass fibre reinforced plastics hydraulic press system.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of unidirectional hydraulic axial variable displacement plunger pump, and comprise the plunger pump main body and be located at the stroking mechanism of this plunger pump main body one side, it is characterized in that described stroking mechanism comprises again
First flange is located at the pump housing first flange of described plunger pump main body and is installed on the end face;
Second flange is located at second flange of the pump housing of described plunger pump main body and is installed on the end face;
Variable piston, two ends are connected with second flange seal with aforesaid first flange respectively and form first oil pocket and second oil pocket respectively, and the bottom is connected with variable dish in the aforementioned plunger pump main body;
Returnning spring, an end and the aforementioned first flange inner wall end face offset, and the other end and aforementioned variable piston step surface offset;
Transition plate is located at outside the pump housing of described plunger pump main body, has two oil outlets, and two oil outlets of this transition plate communicate with aforementioned first oil pocket and second oil pocket respectively; And
Solenoid directional control valve is arranged on the aforementioned transition plate, is used to control the flow direction of oil.
Sealed type is equipped with first adjusting screw on described first end face of flange, and the first adjusting screw inner end is positioned at described first oil pocket, and the outer end is connected with first adjusting nut; Sealed type is equipped with second adjusting screw on described second end face of flange, and the second adjusting screw inner end is positioned at described second oil pocket, and the outer end is connected with second adjusting nut.Realize adjusting two grades of discharge capacities of size with this structure, and can guarantee to be stabilized in a fixed value.
Further optimal design, described variable piston base also is provided with the variable slide block that acts on described variable dish.
Further optimal design, described solenoid directional control valve is the four-way valve with P mouth, A mouth, B mouth and T mouth, accordingly, has the P mouth, A mouth, B mouth and the T mouth that are connected conducting with described solenoid directional control valve on the described transition plate end face.
Described plunger pump main body can comprise
The pump housing;
Pump cover is assemblied on the aforementioned pump housing, and forms an airtight space with the pump housing;
The variable dish is located in the aforementioned pump housing;
The backhaul dish is located on the described variable dish;
Transmission shaft is installed in the aforementioned pump housing by the bearing rotary type;
Housing assembly is positioned at the aforementioned pump housing and connects and rotate with transmission shaft with aforementioned transmission shaft; And
Plunger piston slippery boots mechanism is arranged between aforementioned housing assembly and the backhaul dish.
Compared with prior art, advantage of the present utility model is: adjust control oil by solenoid directional control valve and flow to satisfy the adjustment of plunger pump displacement size, control is simple, move corresponding soon, reliability is good, can fully satisfy glass fibre reinforced plastics hydraulic press action request; After being applied in the glass fibre reinforced plastics hydraulic press system, can cut down the consumption of energy discharge capacity control structure simplicity of designization greatly.
Description of drawings
Fig. 1 is the example structure schematic representation.
Fig. 2 is the stroking mechanism structural representation.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment: with reference to illustrated in figures 1 and 2, the unidirectional hydraulic axial variable displacement plunger pump in the present embodiment comprises the plunger pump main body and is located at the stroking mechanism of this plunger pump main body one side.
The plunger pump main body comprises the pump housing 3, pump cover 18, variable dish 6, backhaul dish 13, transmission shaft 10, housing assembly 15, plunger piston slippery boots mechanism 14, slide plate 7, oil distribution casing 16 and ball-joint 12 again.
Plunger piston slippery boots mechanism 14 is arranged at housing assembly 15 mounting points, is pressed in backhaul dish 13 and with plunger piston slippery boots mechanism 14 on 7 on the slide plate by butterfly spring 11 compression force in the ball-joint 12.Oil distribution casing 16 is assemblied in joining on the pasta of pump cover 18.
Stroking mechanism comprises first flange 21, second flange 23, variable piston 5, Returnning spring 22, transition plate 2 and solenoid directional control valve 1 again.
Returnning spring 22 1 ends and first flange, 21 inwall end faces offset, and the other end and variable piston 5 step surfaces offset, and transition plate 2 is located at the pump housing 3 outsides of plunger pump main body, and two oil outlets of this transition plate 2 communicate with the first oil pocket A and the second oil pocket B respectively.
Four-way electromagnetic reversing valve 1 has P mouth, T mouth, A mouth and B mouth, be arranged on the transition plate 2, and the P mouth of this solenoid directional control valve 1, T mouth, A mouth and B mouth P mouth, T mouth, A mouth and the B mouth of corresponding transition plate 2 respectively is provided with.
Working principle: the transmission shaft 10 of plunger pump is rotated by driven by motor, transmission shaft 10 connects with housing assembly 15 usefulness involute spliness, drive housing assembly 15 rotations, drive of the center line rotation of a plurality of plunger piston slippery boots mechanism 14 around transmission shaft 10, plunger piston slippery boots mechanism 14 is pressed on the variable dish 6 that becomes certain angle of inclination with axis by belleville spring 11 compression force in the ball-joint 12 in backhaul dish 13, at this moment, a plurality of plunger piston slippery boots mechanism 14 makes axially reciprocating simultaneously in housing assembly 15, finish oil suction and press the do action of oil. realize the plunger pump displacement variation by the angle of inclination of adjusting variable dish 6.
The working principle of stroking mechanism is: external control oil is connected the filler opening of cab apron 2, adjusts control oil by solenoid directional control valve 1 and flows to, when solenoid directional control valve 1 must not electricity, control oil enters the second oil pocket B, promote variable piston 5 action left, make variable dish 6 angles of inclination diminish, pump displacement diminishes; When solenoid directional control valve 1 when electric, control oil enters the first oil pocket B, promotes variable piston 5 action to the right, makes variable dish 6 angles of inclination become big, it is big that pump displacement becomes.
Come control pump output discharge capacity by solenoid directional control valve 1, action response is fast, and the reliability height fully satisfies glass fibre reinforced plastics hydraulic press action request.In addition can be by regulating the first adjusting screw 24a and the second adjusting screw 24b at two end flange places, it is big to adjust oil pump, little two grades of discharge capacities, mechanical position limitation can guarantee greatly, little two grades of discharge capacities are stabilized in a fixed value, guarantee axial plunger POF constancy, when being applied in the glass fibre reinforced plastics hydraulic system, can realize that the action of glass fibre reinforced plastics hydraulic press is stable, operating rate is steady.
Claims (6)
1, a kind of unidirectional hydraulic axial variable displacement plunger pump comprises the plunger pump main body and is located at the stroking mechanism of this plunger pump main body one side, it is characterized in that described stroking mechanism comprises again
First flange (21) is located at the pump housing (3) first flanges of described plunger pump main body and is installed on the end face;
Second flange (23) is located at second flange of the pump housing (3) of described plunger pump main body and is installed on the end face;
Variable piston (5), two ends are tightly connected with aforesaid first flange (21) and second flange (23) respectively and form first oil pocket (A) and second oil pocket (B) respectively, and the bottom is connected with variable dish (6) in the aforementioned plunger pump main body;
Returnning spring (22), an end and aforementioned first flange (21) inwall end face offset, and the other end and aforementioned variable piston (5) step surface offset;
Transition plate (2) is located at outside the pump housing (3) of described plunger pump main body, has two oil outlets, and two oil outlets of this transition plate (2) communicate with aforementioned first oil pocket (A) and second oil pocket (B) respectively; And
Solenoid directional control valve (1) is arranged on the aforementioned transition plate (2), is used to control the flow direction of oil.
2, unidirectional hydraulic axial variable displacement plunger pump according to claim 1, it is characterized in that sealed type is equipped with first adjusting screw (24a) on described first flange (21) end face, first adjusting screw (24a) inner end is positioned at described first oil pocket (A), and the outer end is connected with first adjusting nut (19a).
3, unidirectional hydraulic axial variable displacement plunger pump according to claim 1, it is characterized in that sealed type is equipped with second adjusting screw (24b) on described second flange (23) end face, second adjusting screw (24b) inner end is positioned at described second oil pocket (B), and the outer end is connected with second adjusting nut (19b).
4, unidirectional hydraulic axial variable displacement plunger pump according to claim 1 is characterized in that described variable piston (5) bottom also is provided with the variable slide block (4) that acts on described variable dish (6).
5, unidirectional hydraulic axial variable displacement plunger pump according to claim 1, it is characterized in that described solenoid directional control valve (1) is for having the four-way valve of P mouth, A mouth, B mouth and T mouth, accordingly, have P mouth, A mouth, B mouth and the T mouth that is connected conducting with described solenoid directional control valve (1) on described transition plate (2) end face.
6,, it is characterized in that described plunger pump main body comprises according to the arbitrary described unidirectional hydraulic axial variable displacement plunger pump of claim 1 to 5
The pump housing (3);
Pump cover (18) is assemblied on the aforementioned pump housing (3), and forms an airtight space with the pump housing (3);
Variable dish (6) is located in the aforementioned pump housing (3);
Backhaul dish (13) is located on the described variable dish (6);
Transmission shaft (10) is installed in the aforementioned pump housing (3) by the bearing rotary type;
Housing assembly (15) is positioned at the aforementioned pump housing (3) and connects and rotate with transmission shaft (10) with aforementioned transmission shaft (10); And
Plunger piston slippery boots mechanism (14) is arranged between aforementioned housing assembly (15) and the backhaul dish (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201211813U CN201218171Y (en) | 2008-07-09 | 2008-07-09 | Unidirectional hydraulic axial variable displacement plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201211813U CN201218171Y (en) | 2008-07-09 | 2008-07-09 | Unidirectional hydraulic axial variable displacement plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201218171Y true CN201218171Y (en) | 2009-04-08 |
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ID=40541008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201211813U Expired - Lifetime CN201218171Y (en) | 2008-07-09 | 2008-07-09 | Unidirectional hydraulic axial variable displacement plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201218171Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155373A (en) * | 2011-05-19 | 2011-08-17 | 宁波合力机泵有限公司 | Pneumatically-controlled variable reciprocating pump |
| CN102278474A (en) * | 2011-06-12 | 2011-12-14 | 鞍山重型矿山机器股份有限公司 | Contact type dynamic sealing method and dynamic sealing device of dishing sealing ring |
| CN103277275A (en) * | 2013-05-29 | 2013-09-04 | 宁波恒力液压股份有限公司 | Electrically-controlled multifunctional combined proportional variable axial plunger pump |
| CN104533781A (en) * | 2014-12-30 | 2015-04-22 | 南京萨伯工业设计研究院有限公司 | Electromagnetic reversing swash plate plunger pump and control method thereof |
| CN104533741A (en) * | 2014-12-30 | 2015-04-22 | 南京萨伯工业设计研究院有限公司 | Servo control variable piston pump and control method thereof |
| CN104533854A (en) * | 2014-12-30 | 2015-04-22 | 南京萨伯工业设计研究院有限公司 | Hydraulic pump unilateral pressure-bearing servo variable device and control method thereof |
| CN113700624A (en) * | 2021-07-16 | 2021-11-26 | 北京中金泰达电液科技有限公司 | High-pressure high-speed axial plunger pump |
-
2008
- 2008-07-09 CN CNU2008201211813U patent/CN201218171Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155373A (en) * | 2011-05-19 | 2011-08-17 | 宁波合力机泵有限公司 | Pneumatically-controlled variable reciprocating pump |
| CN102278474A (en) * | 2011-06-12 | 2011-12-14 | 鞍山重型矿山机器股份有限公司 | Contact type dynamic sealing method and dynamic sealing device of dishing sealing ring |
| CN103277275A (en) * | 2013-05-29 | 2013-09-04 | 宁波恒力液压股份有限公司 | Electrically-controlled multifunctional combined proportional variable axial plunger pump |
| CN103277275B (en) * | 2013-05-29 | 2015-09-02 | 宁波恒力液压股份有限公司 | Electric controlled multi-functional compositely proportional axial variable displacement plunger pump |
| CN104533781A (en) * | 2014-12-30 | 2015-04-22 | 南京萨伯工业设计研究院有限公司 | Electromagnetic reversing swash plate plunger pump and control method thereof |
| CN104533741A (en) * | 2014-12-30 | 2015-04-22 | 南京萨伯工业设计研究院有限公司 | Servo control variable piston pump and control method thereof |
| CN104533854A (en) * | 2014-12-30 | 2015-04-22 | 南京萨伯工业设计研究院有限公司 | Hydraulic pump unilateral pressure-bearing servo variable device and control method thereof |
| CN113700624A (en) * | 2021-07-16 | 2021-11-26 | 北京中金泰达电液科技有限公司 | High-pressure high-speed axial plunger pump |
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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: 20090408 Effective date of abandoning: 20080709 |