CN105090258A - Rolling bearing structure of gear pump and gear pump - Google Patents

Rolling bearing structure of gear pump and gear pump Download PDF

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Publication number
CN105090258A
CN105090258A CN201510472629.0A CN201510472629A CN105090258A CN 105090258 A CN105090258 A CN 105090258A CN 201510472629 A CN201510472629 A CN 201510472629A CN 105090258 A CN105090258 A CN 105090258A
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CN
China
Prior art keywords
bearing
pump
rolling bearing
pump cover
gear
Prior art date
Application number
CN201510472629.0A
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Chinese (zh)
Inventor
陈义燿
Original Assignee
广州泰旺精密机械有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 广州泰旺精密机械有限公司 filed Critical 广州泰旺精密机械有限公司
Priority to CN201510472629.0A priority Critical patent/CN105090258A/en
Publication of CN105090258A publication Critical patent/CN105090258A/en

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Abstract

The invention discloses a rolling bearing structure of a gear pump. The rolling bearing structure comprises a gear shaft and a pump cover, wherein the gear shaft is provided with a gear; a rolling bearing is arranged between the gear shaft and the pump cover; the rolling bearing can be a needle bearing, a ball bearing or a roller bearing; and the needle bearing can be a drawn cup-type needle bearing, a needle bearing with a needle retainer component, a turning-type needle bearing or a needle bearing provided with a separation-type retainer. The invention further discloses an internal gear pump. The rolling bearing structure has the following advantages that the sliding friction working mode of a self-greasing bearing is replaced by the rolling friction working mode of the rolling bearing, so that high efficiency can be obtained at high rotation speed and high load; driving current can be lowered, so that the effect of energy conservation and carbon saving is realized; load can be uniformly distributed by the rolling bearing, so that the friction resistance is small, and high load can be borne; the precision can be maintained during long-time high-speed operation; and the service life can be greatly prolonged.

Description

The rolling bearing structure of gear pump and gear pump

[technical field]

The present invention relates to gear pump mechanism field, be specially a kind of rolling bearing structure and gear pump of gear pump.

[background technique]

Gear pump relies on the swept volume formed between pumping cylinder and engaging gear to change and the mobile rotary pump carried liquid or make it supercharging.Form two enclosed spaces by two gears, the pump housing and front and back pump cover, when pinion rotation, the volume in the space of the side that is out of gear is large from little change, form vacuum, sucked by liquid, liquid from diminishing greatly, and is clamp-oned in pipeline and is gone by the volume in the space of gears meshing side.Suction chamber and discharge side lean on the line of contact of two gears to separate.The pressure of the exhaust port of gear pump depends on the size pumping place's resistance completely.

Crescent gear pump to have without entrap phenomenon, conveying steadily, efficiency is high, noise is little and the advantage such as long service life.Be widely used in the Newtonian liquid in the industries such as transfer oil, chemical industry, coating, dyestuff, food, grease, medicine or non Newtonian liquid; But the conveying kind lightweight of liquid, volatile liquid are until the large medium of the viscosity such as heavy, thickness, even semisolid liquid, and its range of viscosities be suitable for can reach 0.2-1000000cp.Crescent gear pump is also that two gears, the pump housing and front and back pump cover form two enclosed spaces

Existing gear pump, particularly in crescent gear pump, as depicted in figs. 1 and 2, the tooth axle be wherein connected with gear is connected by self oiling bearing with between the pump cover of front and back, due to when engaging gear pump operation, particularly when high speed operation, self oiling bearing is a stressed friction in direction, extremely easily produce wearing and tearing in the situation of high load and cause precision to reduce, working life serious curtailment.

[summary of the invention]

The object of the invention is to the deficiency overcoming the existence of above-described prior art, provide a kind of surface friction drag little, bearing load is large, the rolling bearing structure of the gear pump of long service life.

Another object of the present invention is to provide one by sliding friction, changes rolling friction into, long service life, operation gear pump more stably.

For achieving the above object, technological scheme of the present invention is: the rolling bearing structure of gear pump, comprises the tooth axle and pump cover that arrange gear, arranges rolling bearing between described tooth axle and pump cover.Replace original self oiling bearing with rolling bearing, the deficiency of sliding bearing can be overcome, can increase the service life, improve running stability.

Described rolling bearing can be needle bearing, ball bearing or roller bearing.

Described needle bearing can be drawn cup type needle bearing, needle bearing, turning type needle bearing or subsidiary divergence type retainer needle bearing with cages for needle assembly.

Described pump cover comprises the front pump cover and rear pump cover that are connected to pump housing both sides, and arrange the through hole for making tooth axle pass in described front pump cover and rear pump cover, described rolling bearing is installed in described through hole, and the inner ring of described rolling bearing is enclosed within described tooth axle outer wall.

Described gear pump can be crescent gear pump.

A kind of gear pump, comprise the pump housing, front pump cover, rear pump cover and the tooth axle of gear is set, described front pump cover and rear pump cover are installed on pump housing side respectively and form enclosed space, described gear is placed in enclosed space, described tooth axle, through the through hole of described front pump cover and rear pump cover, arranges described rolling bearing at described tooth axle and front pump cover and rear pump cover between through-hole wall.

A kind of crescent gear pump, comprise the pump housing, front pump cover, rear pump cover and the tooth axle of gear is set, described front pump cover and rear pump cover are installed on pump housing side respectively and form enclosed space, described gear is placed in enclosed space, described tooth axle, through the through hole of described front pump cover and rear pump cover, arranges described rolling bearing at described tooth axle and front pump cover and rear pump cover between through-hole wall.

The described rolling bearing 3 being arranged on tooth axle 1 and described front pump cover 4 and rear pump cover 6 through hole can state rolling bearing by first and the second rolling bearing forms, and described first states rolling bearing and the second rolling bearing is arranged on side by side in described through hole.

Compared with prior art, the present invention has the following advantages: replace self-lubricating bearing sliding friction mode of operation with the rolling friction of rolling bearing, good usefulness can be obtained under rotating speed and high load. due to by sliding friction, change rolling friction into, therefore can reduce driving current, reach the benefit of energy-saving and carbon-saving; Rolling bearing can mean allocation load, and surface friction drag is little, can bearing load large, can meet when running up for a long time and keep precision, also long service life is extended greatly.

[accompanying drawing explanation]

Fig. 1 is the three-dimensional structure diagram of existing sliding bearing;

Fig. 2 is existing gear pump sectional view;

Fig. 3 is rolling bearing three-dimensional structure diagram;

Fig. 4 is crescent gear pump sectional view;

Fig. 5 is crescent gear pump explosive view;

Fig. 6 is the sectional view that crescent gear pump arranges double rolling bearing;

Fig. 7 is the sectional view figure of external gear pump.

[embodiment]

Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail.

The rolling bearing structure of gear pump, as shown in Figure 3-4, comprise the tooth axle 1 and pump cover that arrange gear, described tooth axle 1 and pump cover arrange rolling bearing 3 between the through hole inside of installing tooth axle 1.By replacing original self-lubricating bearing with rolling bearing, the deficiency that self-lubricating bearing sliding friction exists can be overcome, good usefulness is obtained under rotating speed and high load. due to by sliding friction, change rolling friction into, therefore driving current can be reduced, reach the benefit of energy-saving and carbon-saving, also can increase the service life in addition, improve the precision of high speed operation.Described rolling bearing 3 can be needle bearing, ball bearing or roller bearing.Wherein, preferred needle bearing, the Structure deformation of needle roller is transferred to each needle roller by stressed, can reduce frictional force, improves bearing life, reduces driving current.Wherein, described needle bearing can be drawn cup type needle bearing, needle bearing with cages for needle assembly, turning type needle bearing or subsidiary divergence type retainer needle bearing.

Gear pump comprises the pump housing 9, is connected to the front pump cover 4 of pump housing both sides and rear pump cover 6, in described front pump cover 4 and rear pump cover 6, the through hole be used for through tooth axle 1 is set, described rolling bearing 3 is installed in described through hole, and the inner ring of described rolling bearing 3 is enclosed within described tooth axle 1 outer wall.

For crescent gear pump, as shown in Figure 4 and Figure 5, comprise the pump housing 9, front pump cover 4, rear pump cover 6 and the tooth axle 1 that gear 11 is set, described front pump cover 4 and rear pump cover 6 are installed on the pump housing 9 side respectively and form enclosed space, the driving gear 11 be fixed on described gear 1 is placed in enclosed space and is connected with a joggle with external toothing 10, described tooth axle 1 is through the through hole on described front pump cover 4 and rear pump cover 6, at described tooth axle 1 and front pump cover 4 and rear pump cover 6, described rolling bearing 3 is set between through-hole wall, the Structure deformation rolling described dynamic bearing 3 is transferred on each needle roller or ball by stressed, frictional force can be reduced, improve bearing life, reduce driving current, and effectively can improve bearing pressure, avoid wearing and tearing and run fricative vibrations, increase the service life greatly.Described front pump cover 4 and between rear pump cover 6 and the described pump housing 9, pressure plate 5 is set respectively.At described front pump cover 4 outer installation protecgulum 7, at rear pump cover 6 outer installation bonnet 7.Oil sealing 8 is provided with between described protecgulum 2 and tooth axle 1.Form an annular space narrowed gradually between described external toothing 10 and the top circle portion of driving gear 11, in described annular space, be provided with described shimming assembly.Described shimming assembly comprises calking positive and calking bluff bit, described calking positive repeatedly with described calking bluff bit above described calking positive repeatedly above described calking bluff bit, between described calking positive and described calking bluff bit, pole and shell fragment are set, described calking positive and described calking bluff bit two sides are provided with groove, described groove is plugged with pole, for pressurize.Described calking positive and described calking bluff bit can do expansion expansion action, better tightness, and pressurize is good.Described shimming assembly is the design of two-piece bias, can effectively strengthen radial compensation usefulness.Described driving gear 11 is fixed on wheel shaft 1, is bearing in the described pump housing 9 by wheel shaft 1.Filler opening 91 on the described pump housing 9 and between oil outlet in 90 ° of angles.Described driving gear 11 is arranged off-centre relative to external toothing 10, and described driving gear 11 engages with relative teeth portion interdependent in external toothing 10.A sickle-shaped annular space narrowed gradually is formed between described external toothing 10 and the top circle portion of described driving gear 11--pump chamber, is provided with substantially suitable with the side peripheral profile of described pump chamber above-mentioned pressure plate 5 in described pump chamber.

For crescent gear pump, as shown in Figure 6, the described rolling bearing 3 being arranged on tooth axle 1 and described front pump cover 4 and rear pump cover 6 through hole can state rolling bearing 31 by first and the second rolling bearing 32 forms, and described first states rolling bearing 31 and the second rolling bearing 32 is arranged on side by side in described through hole.Two independently rolling bearings 3 are set, effectively can ensure the operational reliability of rolling bearing 3, be just that one of them rolling bearing (described first states rolling bearing 31 or the second rolling bearing 32) is damaged, another rolling bearing can also work, improve operational reliability, and assembling is also very simple.The outer end being arranged on described first rolling bearing 31 that through hole is gone out is fixed by back-up ring 14, can effectively prevent described first to state rolling bearing 31 and the second rolling bearing 32 comes off from through hole.

As shown in Figure 7, external gear pump, comprises the active gear shaft 11 that arranges gear and passive wheel shaft 12, the pump housing 9 and is arranged on front pump cover 6 and rear pump cover 4, described active gear shaft 11 and being connected at the pump housing 9 internal messing on passive wheel shaft 12 of the described pump housing 9 both sides.Described active gear shaft 11 and passive wheel shaft 12 are arranged among two axis holes of front pressure plate 5 and rear pressure plate 5 respectively, arrange rolling bearing 3 between the inside of axis hole.By replacing original sliding bearing with rolling bearing, the deficiency of sliding bearing can be overcome, increase the service life, replaced by rolling bearing, change rolling friction into, good usefulness can be obtained under high rotating speed and high load. due to by sliding friction, change rolling friction into, therefore can reduce driving current, reach the gear pump of the benefit of energy-saving and carbon-saving.Improve running stability.Wherein, described rolling bearing 3 can be needle bearing or ball bearing or roller bearing.Preferred needle bearing.Wherein, described needle bearing can be drawn cup type needle bearing, needle bearing with cages for needle assembly, turning type needle bearing or subsidiary divergence type retainer needle bearing.Described active gear shaft 11 and passive wheel shaft 12 are arranged in the inside of two axis holes of front pressure plate 5 and rear pressure plate 5 respectively, described rolling bearing 3 is installed in the axis hole of described 7, and the inner ring of described rolling bearing 3 is enclosed within described active gear shaft 11 and passive wheel shaft 12 outer wall.

Although the present invention describes with reference to specific embodiment, this description not meaning that is construed as limiting the present invention.With reference to description of the invention, other change of the disclosed embodiments, all can expect for those skilled in the art, this change should belong in appended claims limited range.

Claims (7)

1. the rolling bearing structure of gear pump, comprises the tooth axle and pump cover that arrange gear, it is characterized in that, arrange rolling bearing between described tooth axle and pump cover.
2. according to the rolling bearing structure of gear pump according to claim 1, it is characterized in that, described rolling bearing is needle bearing, ball bearing or roller bearing.
3. according to the rolling bearing structure of gear pump according to claim 2, it is characterized in that, described needle bearing is drawn cup type needle bearing, needle bearing, turning type needle bearing or subsidiary divergence type retainer needle bearing with cages for needle assembly.
4. according to the rolling bearing structure of gear pump according to claim 3, it is characterized in that, described pump cover comprises the front pump cover and rear pump cover that are connected to pump housing both sides, through hole for making tooth axle pass is set in described front pump cover and rear pump cover, described rolling bearing is installed in described through hole, and the inner ring of described rolling bearing is enclosed within described tooth axle outer wall.
5. a gear pump, comprise the pump housing, front pump cover, rear pump cover and the tooth axle of gear is set, described front pump cover and rear pump cover are installed on pump housing side respectively and form enclosed space, described gear is placed in enclosed space, described tooth axle passes the through hole of described front pump cover and rear pump cover, it is characterized in that, arrange between described tooth axle and front pump cover and rear pump cover are in through hole as arbitrary in claim 1-4 as described in rolling bearing.
6. according to the rolling bearing structure of gear pump according to claim 1, it is characterized in that, a kind of crescent gear pump, comprise the pump housing, front pump cover, rear pump cover and the tooth axle of gear is set, described front pump cover and rear pump cover are installed on pump housing side respectively and form enclosed space, described gear is placed in enclosed space, described tooth axle passes the through hole of described front pump cover and rear pump cover, it is characterized in that, arrange between described tooth axle and front pump cover and rear pump cover are in through hole as arbitrary in claim 1-4 as described in rolling bearing.
7. according to the rolling bearing structure of gear pump according to claim 6, it is characterized in that, the described rolling bearing being arranged on tooth axle and described front pump cover and rear pump cover through hole can state rolling bearing by first and the second rolling bearing forms, and described first states rolling bearing and the second rolling bearing is arranged on side by side in described through hole.
CN201510472629.0A 2015-08-04 2015-08-04 Rolling bearing structure of gear pump and gear pump CN105090258A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510472629.0A CN105090258A (en) 2015-08-04 2015-08-04 Rolling bearing structure of gear pump and gear pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510472629.0A CN105090258A (en) 2015-08-04 2015-08-04 Rolling bearing structure of gear pump and gear pump

Publications (1)

Publication Number Publication Date
CN105090258A true CN105090258A (en) 2015-11-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510472629.0A CN105090258A (en) 2015-08-04 2015-08-04 Rolling bearing structure of gear pump and gear pump

Country Status (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105840503A (en) * 2016-05-11 2016-08-10 广州泰旺精密机械有限公司 High pressure oil outlet structure of internal gear pump and internal gear pump
CN105840492A (en) * 2016-05-11 2016-08-10 广州泰旺精密机械有限公司 Pump body of internal gear pump and internal gear pump
CN106438344A (en) * 2016-10-27 2017-02-22 辽宁瑞德橡塑科技有限公司 Self-lubricating gear pump for hot melt

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105840503A (en) * 2016-05-11 2016-08-10 广州泰旺精密机械有限公司 High pressure oil outlet structure of internal gear pump and internal gear pump
CN105840492A (en) * 2016-05-11 2016-08-10 广州泰旺精密机械有限公司 Pump body of internal gear pump and internal gear pump
CN106438344A (en) * 2016-10-27 2017-02-22 辽宁瑞德橡塑科技有限公司 Self-lubricating gear pump for hot melt
CN106438344B (en) * 2016-10-27 2018-09-25 辽宁瑞德橡塑科技有限公司 A kind of hot melt self-lubricating gear pump

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