CN204284882U - A kind of large discharge internal combustion engine oil pump - Google Patents

A kind of large discharge internal combustion engine oil pump Download PDF

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Publication number
CN204284882U
CN204284882U CN201420754140.3U CN201420754140U CN204284882U CN 204284882 U CN204284882 U CN 204284882U CN 201420754140 U CN201420754140 U CN 201420754140U CN 204284882 U CN204284882 U CN 204284882U
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CN
China
Prior art keywords
pump
rotor
oil
pump housing
pump cover
Prior art date
Application number
CN201420754140.3U
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Chinese (zh)
Inventor
吴天宝
邢光炎
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南京宝圣机油泵制造有限公司
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Priority to CN201420754140.3U priority Critical patent/CN204284882U/en
Application granted granted Critical
Publication of CN204284882U publication Critical patent/CN204284882U/en

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Abstract

The utility model discloses a kind of large discharge internal combustion engine oil pump, the technical problem solved is: little for rotor for internal-combustion engine oil pump cavity space of the prior art, plot ratio is little, cause flow little, in internal-combustion engine main frame accelerating process, because rotating speed increases suddenly, oil flow rate does not catch up with the requirement needed for rotating speed increase, can not get the technical problem of lubricating optimum efficiency.The technological scheme taked is: a kind of large discharge internal combustion engine oil pump, comprises the pump housing, rotor assembly and pump cover; The cross section of the pump housing is irregular roundness arcuation; Pump housing HT250 foundry goods; The periphery wall of the pump housing is provided with oil inlet hole, oil outlet, oil pump installation screw and pump cover installation screw; The pump housing is provided with an indent step cavity; Pump cover is tabular; It is interference fit between pump cover and the pump housing; The periphery wall of pump cover is provided with the pump cover mounting hole corresponding with the pump cover installation screw on the pump housing; A side of pump cover is interior attachment face; Interior attachment face is provided with an outer projection corresponding with the positioning convex on internal rotor.

Description

A kind of large discharge internal combustion engine oil pump

Technical field

The utility model relates to a kind of large discharge internal combustion engine oil pump.

Background technique

Along with internal-combustion engine is in multi-field extensive use, its speed-raising, slewing range have larger widening, and namely performance and quality are greatly improved.Therefore, Modern Internal-Combustion Engine is had higher requirement to lubrication system critical piece machine oil pump performance, and the middle-size and small-size internal-combustion engine of current China generally adopts internal messing cycloidal rotor oil pump.In internal combustion engine operation speed-change process, oil pump is along with the change of rotating speed, fuel delivery, pressure can change thereupon, thus produce some destabilizing factors, usually there will be fuel delivery instability, air pocket, pressure fluctuation is large, oil damages large, even bad phenomenon (especially single cylinder engine is more outstanding) such as oil pump overload damage etc., in conventional machine oil pump and host matching design, for ensureing that each position of main frame can obtain sufficient lubrication, the flow of setting, pressure is higher than needed for main frame, therefore, when main frame operation accelerating is to certain limit, generally occur that oil pump transships, cause the pernicious wearing and tearing of oil pump overburdening, increase power consumption, reduce performance and used life, the each lubricating point of main frame is due to pressure, flow is too high excessive, there is abnormal injection, loop oil is made to produce bubble, recycle oil easily produces air pocket, and oily cycle frequency is too high, oil is caused to decline fast, oil consumption is large.

At present, engine oil pump of internal combustion engine of the prior art, rotor chamber space is little, and plot ratio is little, causes flow little, and in internal-combustion engine main frame accelerating process, because rotating speed increases suddenly, oil flow rate does not catch up with the requirement needed for rotating speed increase, can not get the optimum efficiency lubricated.

Model utility content

Technical problem to be solved in the utility model is: little for rotor for internal-combustion engine oil pump cavity space of the prior art, plot ratio is little, cause flow little, in internal-combustion engine main frame accelerating process, because rotating speed increases suddenly, oil flow rate does not catch up with the requirement needed for rotating speed increase, can not get the technical problem of lubricating optimum efficiency.

The purpose of this utility model is to provide one and meets internal combustion engine development demand, have developed a large discharge oil pump, fundamentally changes the large discharge engine oil pump of internal combustion engine of conventional machine oil pump performance.

For solving the problems of the technologies described above, the technological scheme that the utility model is taked is:

A kind of large discharge internal combustion engine oil pump, comprises the pump housing, rotor assembly and pump cover; The described pump housing is connected with pump cover, forms a rotor chamber between the pump housing and pump cover; Described rotor assembly is positioned at foregoing rotor chamber;

The cross section of the described pump housing is irregular roundness arcuation; Described pump housing HT250 foundry goods; The periphery wall of the described pump housing is provided with oil inlet hole, oil outlet, oil pump installation screw and pump cover installation screw; The described pump housing is provided with an indent step cavity; The wall thickness of the indent step cavity on the described pump housing is 23mm; Two independently oil suction chambers and go out oil pocket are provided with in described indent step cavity; Described oil suction chamber is connected with oil inlet hole, described in go out oil pocket and be connected with oil outlet; Described oil suction chamber and to go out oil pocket not coplanar, and oil suction chamber is higher than going out oil pocket; Rotor fixed position hole is provided with in described indent step cavity; The center in described rotor fixed position hole and the center decentraction of indent step cavity;

Described rotor assembly comprises internal rotor and external rotor; Described external rotor is circular, and the inwall of external rotor is provided with internal messing tooth; Described external rotor is located in indent step cavity, and the inwall of the outer wall of external rotor and indent step cavity is fitted; Described internal rotor is cylindrical shape, and the lower end of internal rotor is provided with inner rotor shaft, and the upper end outer wall of internal rotor is provided with the outer gearing tooth be meshed with internal messing tooth; The top of described internal rotor is provided with positioning convex;

Described pump cover is tabular; It is interference fit between described pump cover and the pump housing; The periphery wall of described pump cover is provided with the pump cover mounting hole corresponding with the pump cover installation screw on the pump housing; A side of described pump cover is interior attachment face; Described interior attachment face is provided with an outer projection corresponding with the positioning convex on internal rotor.

Further improvement, described large discharge internal combustion engine oil pump also comprises Sealing; Described Sealing is arranged on the joint between pump cover and the pump housing.

Preferably, Sealing is O RunddichtringO.

The utility model is compared with prior art:

The wall thickness reduction of the indent step cavity 1, on the utility model middle pump body, to 23mm, increases the space of rotor chamber, and the space of rotor chamber increases, and the plot ratio of oil pump is increased.Take model as S1110 oil pump, flow has increased to 11 liters by original 8 liters, adds 3 liters, thus increases the flow into and out of oil, and the lubricating function of main frame obtains enhancing.

2, the utility model pump housing application HT250 high strength casting, ensures that the performances such as its pressure born are constant, and have employed the camber design of irregular garden, than former oil pump weight reduction 0.13 kilogram.

3, the utility model pump cover is provided with outer projection, and during installation, the outer projection on pump cover directly contacts the positioning convex on internal rotor, significantly reduces the friction of pump cover; Fundamentally save raw material, be convenient to maintenance, reduce cost of production and user's maintenance cost.

4, the easily damaged parts in oil pump is the pump housing and internal rotor mainly, oil pump easily damaged parts of the prior art has been broken just to be needed to change whole oil pump, and the oil pump in the utility model, oil pump is contained on diesel engine, with diesel engine fixed position entirety, because pump cover is provided with outer projection, during installation, outer projection on pump cover directly contacts the positioning convex on internal rotor, and therefore, the easily damaged parts of this utility model oil pump is inner internal rotor; Pump cover only need be pulled down taking-up internal rotor by the maintenance of this utility model oil pump, loads onto new internal rotor, for user has saved cost; Therefore oil pump of the present utility model just has practicability.

5, the utility model is provided with oil inlet hole, oil outlet and pump cover installation screw on the pump housing, is loaded by internal rotor in the pump housing, with special tool, pump cover is pressed into the pump housing, and re-use the sealing of O RunddichtringO, anti-leakage function strengthens further.

In sum, large discharge internal combustion engine oil pump described in the utility model changes the irrational power consumption of traditional oil pump and wearing and tearing, meet the lubricating condition that main frame can obtain the optimum state on a large scale under speed change working condition, thus the speed-raising of combustion motor and improve quality and played good supporting effect.

Accompanying drawing explanation

Fig. 1 is the plan view of embodiment.

Fig. 2 is the sectional view of embodiment.

Fig. 3 is the plan view of the pump housing.

Fig. 4 is the plan view of pump cover.

Wherein, 1, the pump housing, 1.1, indent step cavity, 2, rotor assembly, 3, pump cover, 3.1, interior attachment face, 3.2, outer projection, 4, Sealing, 5, bolt, 6, oil suction chamber, 7, oil pump installation screw, 8, pump cover installation screw, 9, oil inlet hole, 10, oil outlet, 11, rotor fixed position hole, 12, pump cover mounting hole, 13, go out oil pocket.

Embodiment

For making content of the present utility model more become apparent, be further described below in conjunction with accompanying drawing 1-4 and embodiment.

In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.

Embodiment:

The present embodiment take model as S1110 oil pump is example, as shown in Figure 1, 2:

S1110 oil pump in the present embodiment, comprises the pump housing 1, rotor assembly 2, pump cover 3 and Sealing 4.

The pump housing 1 is connected with pump cover 3, forms a rotor chamber between the pump housing 1 and pump cover 3; Rotor assembly 2 is positioned at foregoing rotor chamber; Sealing 4 is arranged on the joint between pump cover 3 and the pump housing 1.

As shown in Figure 3.The cross section of the pump housing 1 is irregular roundness arcuation.Pump housing 1HT250 foundry goods; The periphery wall of the pump housing 1 is provided with oil inlet hole 9, oil outlet 10, oil pump installation screw 7 and pump cover installation screw 8; The pump housing 1 is provided with an indent step cavity 1.1; The wall thickness of the indent step cavity 1.1 on the pump housing 1 is 23mm; Two independently oil suction chambers 6 and go out oil pocket 13 are provided with in indent step cavity 1.1; Oil suction chamber 6 is connected with oil inlet hole 9, goes out oil pocket 13 and is connected with oil outlet 10; Oil suction chamber 6 and to go out oil pocket 13 not coplanar, and oil suction chamber 6 is higher than going out oil pocket 13; Rotor fixed position hole 11 is provided with in indent step cavity 1.1; The center in rotor fixed position hole 11 and the center decentraction of indent step cavity 1.1.

The cross section of the pump housing 1 in the present embodiment is irregular roundness arcuation, and it is upper that irregular roundness arcuation mentioned here refers at the normal arc-shaped pump housing, cuts out some or increase, making it to become irregular arc-shaped.

Rotor assembly 2 comprises internal rotor and external rotor; External rotor is circular, and the inwall of external rotor is provided with internal messing tooth; Described external rotor is located in indent step cavity 1.1, and the inwall of the outer wall of external rotor and indent step cavity 1.1 is fitted; Internal rotor is cylindrical shape, and the lower end of internal rotor is provided with inner rotor shaft, and the upper end outer wall of internal rotor is provided with the outer gearing tooth be meshed with internal messing tooth; The top of described internal rotor is provided with positioning convex.Inner rotor shaft in the present embodiment and internal rotor as a whole.

As shown in Figure 4.Pump cover 3 is in tabular; It is interference fit between pump cover 3 and the pump housing 1; The periphery wall of pump cover 3 is provided with the pump cover mounting hole 12 corresponding with the pump cover installation screw 8 on the pump housing 1; A side of pump cover 3 is interior attachment face 3.1; Interior attachment face 3.1 is provided with an outer projection 3.2 corresponding with the positioning convex on internal rotor.

The blanks such as the pump housing in S1110 oil pump, pump cover, internal rotor, external rotor carry out fine finishing by illustrated dimensions, make to meet drawing requirement.

Internal rotor in rotor assembly 2, external rotor are loaded in the pump housing 1, then by pump cover 3 by the special tool press-in pump housing 1, and fixed by bolt 5.The pump housing 1 and pump cover 3 form closed rotor chamber.

Special tool in the present embodiment is for being specifically designed to the instrument installed made by pump cover 3 in prior art.

The pump housing 1 in the present embodiment is adding man-hour, by the wall thickness reduction of the indent step cavity 1.1 on the pump housing 1 to 23mm; HT250 high strength casting applied by the pump housing 1, ensure that the performances such as its pressure born are constant, add the space of rotor chamber, the space of rotor chamber increases, its plot ratio is increased, and flow has increased to 11 liters by original 8 liters, adds 3 liters, thus the flow increased into and out of oil, the lubricating function of main frame obtains enhancing.The pump housing 1 cross section is irregular roundness arcuation, saves raw material, than former oil pump weight reduction 0.13 kilogram, reduces cost of production and user's maintenance cost.Pump cover 3 is provided with outer projection, makes the installation of pump cover 3 more convenient, reliably; When mounted, the outer projection 3.2 on pump cover 3 directly contacts the positioning convex on internal rotor, significantly reduces the friction of pump cover 3 simultaneously; Fundamentally save raw material, be convenient to maintenance, reduce cost of production and user's maintenance cost.The pump housing 1 is provided with oil inlet hole 9, oil outlet 10 and pump cover installation screw 7, is loaded by internal rotor in the pump housing 1, with special tool, pump cover 3 is pressed into the pump housing 1, re-uses O RunddichtringO sealing 4, can leakage proof.

HT250 foundry goods in the present embodiment is foundry goods of the prior art, and its concrete composition the present embodiment is not described in detail.

The utility model does not relate to partly all same as the prior art or employing prior art and is realized.

Claims (3)

1. a large discharge internal combustion engine oil pump, comprises the pump housing (1), rotor assembly (2) and pump cover (3); The described pump housing (1) is connected with pump cover (3), forms a rotor chamber between the pump housing (1) and pump cover (3); Described rotor assembly (2) is positioned at foregoing rotor chamber; It is characterized in that,
The cross section of the described pump housing (1) is irregular roundness arcuation; The described pump housing (1) HT250 foundry goods; The periphery wall of the described pump housing (1) is provided with oil inlet hole (9), oil outlet (10), oil pump installation screw (7) and pump cover installation screw (8); The described pump housing (1) is provided with an indent step cavity (1.1); The wall thickness of the indent step cavity (1.1) on the described pump housing (1) is 23mm; Two independently oil suction chambers (6) and go out oil pocket (13) are provided with in described indent step cavity (1.1); Described oil suction chamber (6) is connected with oil inlet hole (9), described in go out oil pocket (13) and be connected with oil outlet (10); Described oil suction chamber (6) and to go out oil pocket (13) not coplanar, and oil suction chamber (6) is higher than going out oil pocket (13); Rotor fixed position hole (11) is provided with in described indent step cavity (1.1); The center of described rotor fixed position hole (11) and the center decentraction of indent step cavity (1.1);
Described rotor assembly (2) comprises internal rotor and external rotor; Described external rotor is circular, and the inwall of external rotor is provided with internal messing tooth; Described external rotor is located in indent step cavity (1.1), and the inwall of the outer wall of external rotor and indent step cavity (1.1) is fitted; Described internal rotor is cylindrical shape, and the lower end of internal rotor is provided with inner rotor shaft, and the upper end outer wall of internal rotor is provided with the outer gearing tooth be meshed with internal messing tooth; The top of described internal rotor is provided with positioning convex;
Described pump cover (3) is in tabular; Be interference fit between described pump cover (3) and the pump housing (1); The periphery wall of described pump cover (3) is provided with the pump cover mounting hole (12) corresponding with the pump cover installation screw (8) on the pump housing (1); A side of described pump cover (3) is interior attachment face (3.1); Described interior attachment face (3.1) is provided with an outer projection (3.2) corresponding with the positioning convex on internal rotor.
2. large discharge internal combustion engine oil pump as claimed in claim 1, it is characterized in that, described large discharge internal combustion engine oil pump also comprises Sealing (4); Described Sealing (4) is arranged on the joint between pump cover (3) and the pump housing (1).
3. large discharge internal combustion engine oil pump as claimed in claim 2, it is characterized in that, described Sealing (4) is O RunddichtringO.
CN201420754140.3U 2014-12-04 2014-12-04 A kind of large discharge internal combustion engine oil pump CN204284882U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420754140.3U CN204284882U (en) 2014-12-04 2014-12-04 A kind of large discharge internal combustion engine oil pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420754140.3U CN204284882U (en) 2014-12-04 2014-12-04 A kind of large discharge internal combustion engine oil pump

Publications (1)

Publication Number Publication Date
CN204284882U true CN204284882U (en) 2015-04-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420754140.3U CN204284882U (en) 2014-12-04 2014-12-04 A kind of large discharge internal combustion engine oil 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
CN107524907A (en) * 2017-10-19 2017-12-29 项达章 Big flow engine oil pump of internal combustion engine
CN107606459A (en) * 2017-08-21 2018-01-19 王道红 A kind of big flow internal combustion engine lubricating oil pump
CN107654831A (en) * 2017-10-21 2018-02-02 王友宏 A kind of big flow engine oil pump of internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107606459A (en) * 2017-08-21 2018-01-19 王道红 A kind of big flow internal combustion engine lubricating oil pump
CN107524907A (en) * 2017-10-19 2017-12-29 项达章 Big flow engine oil pump of internal combustion engine
CN107654831A (en) * 2017-10-21 2018-02-02 王友宏 A kind of big flow engine oil pump of internal combustion engine

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