CN103953542A - Vane pump - Google Patents

Vane pump Download PDF

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Publication number
CN103953542A
CN103953542A CN201410207886.7A CN201410207886A CN103953542A CN 103953542 A CN103953542 A CN 103953542A CN 201410207886 A CN201410207886 A CN 201410207886A CN 103953542 A CN103953542 A CN 103953542A
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CN
China
Prior art keywords
oil
vane pump
oil suction
oilhole
rotor
Prior art date
Application number
CN201410207886.7A
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Chinese (zh)
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CN103953542B (en
Inventor
齐国兴
王洪继
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王洪继
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Publication date
Application filed by 王洪继 filed Critical 王洪继
Priority to CN201410207886.7A priority Critical patent/CN103953542B/en
Publication of CN103953542A publication Critical patent/CN103953542A/en
Application granted granted Critical
Publication of CN103953542B publication Critical patent/CN103953542B/en

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Abstract

The invention relates to a vane pump applied to a plastic injection machine. The vane pump comprises a pump body, wherein a transmission shaft, a rotor and a stator are arranged in the pump body; vanes are uniformly distributed between the rotor and the stator; an oil distribution disc is arranged at two sides of the rotor and comprises an oil suction distribution disc and an oil pressing distribution disc; an oil cavity is formed among the rotor, a stator, the vanes and the oil distribution disc; the oil cavity is divided into an oil suction zone, an oil pressing zone and a seal zone according to the state and function of the vane pump when the vane pump rotates positively and works; the seal zone is arranged between the oil suction zone and the oil pressing zone; an oil hole is formed in the rotor or the oil distribution disc which forms the oil suction zone. The invention provides the vane pump which is applied to the plastic injection machine, is simple in structure, capable of adapting frequent machine halts and long in service life; moderate negative rotation of the vanes is allowed and the noise is reduced when the vanes rotate negatively; the technical problem that in the prior art, an existing vane pump is too complex in structure and large in negative rotation noise, the negative rotation of the vanes are not allowed and the service life is impacted is solved.

Description

A kind of vane pump

Technical field

The present invention relates to a kind of vane pump, especially design a kind of vane pump being applied in injection machine.

Background technique

As everyone knows, hydraulic vane pump is the power source of hydraulic system, and it has the distinguishing feature such as low noise, high pressure, is widely used in the fields such as lathe, molding machine, leather machine, metal forming machinery, engineering machinery.

In present patent document, also have much about the introduction of vane pump, for example, Chinese patent: " a kind of vane pump (CN202441597U) ", comprise the pump housing, pump cover, main shaft, pump core, oil distribution casing, pump cover is fixedly arranged on the pump housing, between the pump housing and pump cover, form the inner chamber of accommodating pump core and oil distribution casing, main shaft is arranged in pump cover, pump core retainer plate is located on main shaft, oil distribution casing is between pump core and the pump housing, one end end face and the pump core of oil distribution casing are close to, between the other end end face of oil distribution casing and the pump housing, be provided with holddown spring, therefore following in the long-term rotation process of main shaft at pump core, oil distribution casing can remain and being close to of pump core under the elastic compensating effect of holddown spring, thereby the lubricant oil on oil distribution casing can be delivered on pump core timely and effectively.

The use of the vane pump in existing file or the technical problem of solution, mostly be that vane pump normally works, the spinning solution of general vane pump is all same direction, situation when the oil suction force feed of forward, hydraulic vane pump is in loaded work piece process, if immediately quit work or the actuating motor working speed of servo-system is down to 0 o'clock, pump intra vane is subject to oil liquid pressure and impacts, cause oil pump to reverse in right amount, produce and impact and occur noise, unfavorable and affect people's sense of hearing on the overall performance of oil pump.And injection machine often there will be outage state, be all generally therefore to adopt gear pump as power source.If the power source using vane pump as injection machine, can largely exert an influence to blade and vane pump, affect the working life of vane pump.

Summary of the invention

The invention provides one simple in structure, can adapt to frequent shutdown, allow blade suitably to reverse, in the time of reversion, reduce noise, a kind of vane pump being applied on injection machine of long service life; Solved the vane pump structure that exists in prior art too complicated, can not allow blade reversion, reversion noise is large, working life affected technical problem.

Above-mentioned technical problem of the present invention solves by following technical proposals: a kind of vane pump, comprise the pump housing, in the pump housing, be provided with transmission shaft, on transmission shaft, be socketed with rotor, be provided with stator outward at rotor, between rotor and stator, be evenly equipped with blade, both sides at rotor are provided with oil distribution casing, oil distribution casing comprises the oil suction oil distribution casing and the force feed oil distribution casing that are positioned at rotor both sides, at rotor, stator, between blade and oil distribution casing, space forms oil pocket, state and function when oil pocket is worked according to vane pump forward are divided into oil suction district, laminated oil zone and seal area, seal area is between oil suction district and laminated oil zone, offer oilhole forming on the stator in described oil suction district or oil distribution casing.

Oil pocket is to divide according to the number of blade, there are how many blades just to have how many oil pockets, and oil suction district, seal area and laminated oil zone are to divide according to the variation of oil pressure in cavity, an oil suction district may comprise multiple oil pockets, same, laminated oil zone or seal area also may comprise multiple oil pockets, and which oily district oil pocket belongs to judges according to the pressure in oil pocket.

Vane pump is in the time of normal work, transmission shaft forward rotor driven forward, vane pump forms 2 oil suctions and 2 force feeds in the time that transmission shaft rotates a circle, each oil pocket volume in oil suction district all changes from small to big, produce thus vacuum, oil suction district connects filler opening and carries out oil suction, and each oil pocket volume of laminated oil zone is all from large to small, hydraulic oil is squeezed, and laminated oil zone connects oil outlet and carries out force feed.

In the time that vane pump is applied on injection machine, because injection machine needs often to shut down, the rotating speed that therefore produces transmission shaft is down to 0, and now the blade in vane pump receives that oil liquid pressure impacts, and causes oil pump to reverse in right amount.Oil suction district is now due to the reversion of rotor, and from large to small, and each oil pocket volume of laminated oil zone changes from small to big each oil pocket volume in oil suction district, the therefore function of oil suction district and laminated oil zone reversion.The oil pocket in oil suction district diminishes gradually, and hydraulic oil is squeezed, and the oil pocket of laminated oil zone becomes large gradually.Therefore in the cavity in the oil suction district in the time of forward, offer through hole, can be in the time that vane pump reverse, draining fast, preventing that vane pump from too much reversing affect working life, the noise problem that reduction brings thus simultaneously.And in the time that the pump housing is normally worked, through hole can be used as filler opening oil-feed, accelerate oil-feed speed, improve pump housing pressure.

As preferably, described oilhole is opened in the side of oil suction district near seal area.Oilhole is opened in first cavity of oily district variation, that is to say in oil pocket maximum in oil suction district, and be that side near seal area at cavity, make the pump housing in the time there is Reversion, carry out draining once forwarding the oil suction district very first time to, thereby prevent reversion.

Oilhole can be opened on stator, also can be opened on oil suction oil distribution casing or force feed oil distribution casing.As preferably, described oilhole is opened on oil suction oil distribution casing, and described oilhole penetrates into an other side by a side of side plate along transmission shaft direction, and oilhole is connected with the inlet port on the pump housing.Oil suction oil distribution casing is positioned at transmission shaft end, simple in structure, and interference part is few, therefore on oil suction oil distribution casing, offers oilhole, and technique is simple to operation.

As preferably, described oilhole has two, lays respectively on oil suction oil distribution casing near inlet port one side, between the inlet port on oilhole and oil suction oil distribution casing, is provided with UNICOM's groove.Be twice oil suction and twice force feed owing to possessing vane pump, therefore in all oil suctions district, all need to arrange oilhole, make stress equalization, smooth running.Between inlet port on oilhole and oil suction oil distribution casing, be interconnected by UNICOM's groove, can better draining or oil suction in the time of forward.

As preferably, described blade is 12, and oil pocket comprises Liang Ge oil suction district, He Liangge seal area, two laminated oil zones, each cavity volume in oil suction district becomes greatly gradually, and each cavity volume of laminated oil zone diminishes gradually, and described oilhole is opened in a cavity of cavity volume maximum in oil suction district.The inner chamber of stator is oval, rotor and stator coaxial rotating, and the size of oil pocket is along with the position difference of blade rotation changes.Oilhole is opened in of cavity volume maximum, and when guarantee You district occurs to exchange, energy effective off-load of the very first time, significantly reduces until oil pump reliably working is effectively protected in elimination recoil, and eliminate the noise recoiling.

Therefore, a kind of vane pump of the present invention possesses following advantage: in oil suction district, in the cavity of maximum, near seal area one side, oilhole is set, when oil pump was recoiled in moment; be able to effective off-load; significantly reduce until oil pump reliably working is effectively protected in elimination recoil, and eliminate the noise of recoil.Oilhole is opened on oil suction oil distribution casing, convenient processing, and also draining is effective.

Brief description of the drawings

Fig. 1 is the schematic diagram of a kind of vane pump of the present invention.

Fig. 2 is the schematic diagram of the vane pump pump core of Fig. 1 inner stator, rotor and blade formation.

Fig. 3 is the plan view of the oil suction oil distribution casing in Fig. 1.

Fig. 4 is the rear view of Fig. 3.

Embodiment

Below by embodiment, and by reference to the accompanying drawings, the technological scheme of invention is described in further detail.

Embodiment:

As illustrated in fig. 1 and 2, a kind of vane pump, comprises the pump housing and the pump core and the transmission shaft 10 that are positioned at the pump housing.The pump housing comprises the front case 1 and the rear case 9 that are positioned at the left and right sides, offers inlet port 3 on front case 1, offers force feed mouth 6 on rear case 9.Pump core comprise be positioned on transmission shaft 10 and with the rotor 7 of transmission shaft 10 synchronous rotaries, on rotor 7, offer blade groove 16, in blade groove 16, be plugged with blade 5, be socketed with stator 4 at the external peripheral surface of rotor 7, the center of stator 4 offers oval-shaped hole, stator 4 and rotor 7 coaxial rotatings, leave space between stator 4 and rotor 7.In the time that vane pump is normally worked, blade 5 is under the centrifugal action of rotor 7, and one end of blade 5 is pressed close to stator 4 all the time.Oil suction oil distribution casing 2 and force feed oil distribution casing 8 are installed in the both sides of pump core, and oil suction oil distribution casing 2 is positioned at inlet port one side, and force feed oil distribution casing 8 is positioned at force feed mouth one side.The end face of oil suction oil distribution casing 2 and force feed oil distribution casing 8 is pressed close to two end faces of rotor, therefore, forms oil pocket 12 by oil distribution casing, stator, rotor and blade.Due to the center of stator offer for oval-shaped hole, therefore, in the time that blade rotates with rotor, the volume of oil pocket 12 can change.In the time that vane pump is normally worked, namely when rotor 7 forward, the volume of oil pocket 12 changes from small to big and forms oil suction district, carries out oil suction, and behind seal area, the volume of oil pocket forms laminated oil zone from large to small, carries out force feed.In the present embodiment, comprise 12 blades, form 12 oil pockets 12, comprise Liang Ge oil suction district, He Liangge laminated oil zone, two seal areas, is connected by seal area between oil suction district and laminated oil zone.Oil suction district, seal area and laminated oil zone all comprise multiple oil pockets, oil pockets of the volume maximum in oil suction district in oil suction district near that oil pocket 12 of seal area, the position adjacent with seal area at this oil pocket of volume maximum offers oilhole 11, and oilhole 11 is opened on the oil suction oil distribution casing 2 that forms cavity.

As shown in Figures 3 and 4, on oil suction oil distribution casing, offer two symmetrical oil suction openings 14 and two force feed openings 13 that are arranged symmetrically with, near two oil suction openings 14, be respectively processed with an oilhole 11, oilhole 11 is connected with the oil suction opening 14 on oil suction oil distribution casing 2 by UNICOM's groove 15.Oilhole 11 is opened near the oil suction opening 14 of oil suction oil distribution casing 2, and oilhole 11 is positioned on same camber line with oil suction oil distribution casing oil suction opening 14 lower limbs.

In the time that vane pump is applied on injection machine, due to the frequent shutdown of injection machine, if immediately quit work or the actuating motor working speed of servo-system is down to 0 o'clock, pump intra vane is subject to oil liquid pressure and impacts, and causes oil pump to reverse in right amount, produces and impacts and occur noise.When there is when reversion, oil suction district becomes laminated oil zone, in the time that reversion starts, due to the oilhole that has in oil suction district, can realize fast draining, impacts thereby reduce oil liquid pressure, improves vane pump working life.

Claims (7)

1. a vane pump, comprise the pump housing, in the pump housing, be provided with transmission shaft, on transmission shaft, be socketed with rotor, be provided with stator outward at rotor, between rotor and stator, be evenly equipped with blade, both sides at rotor are provided with oil distribution casing, oil distribution casing comprises the oil suction oil distribution casing and the force feed oil distribution casing that are positioned at rotor both sides, it is characterized in that: at rotor, stator, between blade and oil distribution casing, space forms oil pocket, state when oil pocket is worked according to vane pump forward is divided into oil suction district, laminated oil zone and seal area, seal area is between oil suction district and laminated oil zone, offer oilhole forming on the stator in described oil suction district or oil distribution casing.
2. a kind of vane pump according to claim 1, is characterized in that: described oilhole is opened in the side of oil suction district near seal area.
3. a kind of vane pump according to claim 1 and 2, is characterized in that: described oilhole is opened on oil suction oil distribution casing, and described oilhole penetrates into an other side by a side of side plate along transmission shaft direction, and oilhole is connected with the inlet port on the pump housing.
4. a kind of vane pump according to claim 1 and 2, is characterized in that: described oilhole has two, lays respectively at close inlet port one side on oil suction oil distribution casing, between the inlet port on oilhole and oil suction oil distribution casing, is provided with UNICOM's groove.
5. a kind of vane pump according to claim 3, is characterized in that: described oilhole has two, lays respectively at close inlet port one side on oil suction oil distribution casing, between the inlet port on oilhole and oil suction oil distribution casing, is provided with UNICOM's groove.
6. a kind of vane pump according to claim 1 and 2, it is characterized in that: described blade is 12, oil pocket comprises Liang Ge oil suction district, He Liangge seal area, two laminated oil zones, each cavity volume in oil suction district becomes large gradually, each cavity volume of laminated oil zone diminishes gradually, and described oilhole is opened in a cavity of cavity volume maximum in oil suction district.
7. a kind of vane pump according to claim 5, it is characterized in that: described blade is 12, oil pocket comprises Liang Ge oil suction district, He Liangge seal area, two laminated oil zones, each cavity volume in oil suction district becomes large gradually, each cavity volume of laminated oil zone diminishes gradually, and described oilhole is opened in a cavity of cavity volume maximum in oil suction district.
CN201410207886.7A 2014-05-17 2014-05-17 A kind of vane pump CN103953542B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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CN103953542A true CN103953542A (en) 2014-07-30
CN103953542B CN103953542B (en) 2017-08-08

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104196721A (en) * 2014-07-31 2014-12-10 安徽恒博电气科技有限公司 Single-action vane pump
CN104728585A (en) * 2014-12-10 2015-06-24 马勒技术投资(中国)有限公司 High-efficiency variable-displacement oil pump reducing periodical loads of liquid
CN110418895A (en) * 2017-03-14 2019-11-05 格兰富控股联合股份公司 Pump assembly

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3311064A (en) * 1963-07-05 1967-03-28 Zahnradfabrik Friedrichshafen Vane-type rotary pumps
JPH06185471A (en) * 1992-12-16 1994-07-05 Kayaba Ind Co Ltd Vane pump
JPH1026086A (en) * 1996-07-05 1998-01-27 Kayaba Ind Co Ltd Seizure preventing structure for vane pump
US6280150B1 (en) * 1997-09-18 2001-08-28 Jidosha Kiki Co., Ltd. Variable displacement pump
CN2791302Y (en) * 2005-02-05 2006-06-28 崔勇达 High-performace balancing-type hydraulic vane pump
JP2007056684A (en) * 2005-08-22 2007-03-08 Kayaba Ind Co Ltd Vane pump
CN102840134A (en) * 2012-09-05 2012-12-26 浙江台州先顶液压有限公司 Hydraulic control mechanism for vanes
CN103089615A (en) * 2013-02-04 2013-05-08 孙国校 Leakage type high-pressure vane pump and its use method
CN203822623U (en) * 2014-05-17 2014-09-10 王洪继 Vanepump

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3311064A (en) * 1963-07-05 1967-03-28 Zahnradfabrik Friedrichshafen Vane-type rotary pumps
JPH06185471A (en) * 1992-12-16 1994-07-05 Kayaba Ind Co Ltd Vane pump
JPH1026086A (en) * 1996-07-05 1998-01-27 Kayaba Ind Co Ltd Seizure preventing structure for vane pump
US6280150B1 (en) * 1997-09-18 2001-08-28 Jidosha Kiki Co., Ltd. Variable displacement pump
CN2791302Y (en) * 2005-02-05 2006-06-28 崔勇达 High-performace balancing-type hydraulic vane pump
JP2007056684A (en) * 2005-08-22 2007-03-08 Kayaba Ind Co Ltd Vane pump
CN102840134A (en) * 2012-09-05 2012-12-26 浙江台州先顶液压有限公司 Hydraulic control mechanism for vanes
CN103089615A (en) * 2013-02-04 2013-05-08 孙国校 Leakage type high-pressure vane pump and its use method
CN203822623U (en) * 2014-05-17 2014-09-10 王洪继 Vanepump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104196721A (en) * 2014-07-31 2014-12-10 安徽恒博电气科技有限公司 Single-action vane pump
CN104728585A (en) * 2014-12-10 2015-06-24 马勒技术投资(中国)有限公司 High-efficiency variable-displacement oil pump reducing periodical loads of liquid
CN104728585B (en) * 2014-12-10 2017-04-19 马勒技术投资(中国)有限公司 High-efficiency variable-displacement oil pump reducing periodical loads of liquid
CN110418895A (en) * 2017-03-14 2019-11-05 格兰富控股联合股份公司 Pump assembly

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PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Processing method of vane pump rotor groove

Effective date of registration: 20180731

Granted publication date: 20170808

Pledgee: Zhejiang Merchants Bank Limited by Share Ltd Taizhou branch

Pledgor: Wang Hongji

Registration number: 2018330000210

PE01 Entry into force of the registration of the contract for pledge of patent right