A kind of automobile cooling water pump
Technical field
The present invention relates to automobile engine water cooling systems, and in particular to a kind of automobile cooling water pump.
Background technique
Auto pump is one of the ost important components in engine-cooling system, it will be outside the mechanical energy of prime mover or other
Energy sends liquid to, increases liquid energy.
Existing auto pump generally includes the pump housing, pump shaft, impeller, gear and water seal arrangement, and pump shaft is inserted in the pump housing
Inner cavity and one end extend the pump housing, water seal arrangement is set on pump shaft and the inner cavity of the pump housing is separated into upper and lower cavity, tooth
Wheel is installed on one end that pump shaft extends the pump housing, and impeller is installed on one end that pump shaft is located at the lower chamber, passes through water pump
It is linked in engine and just can recycle and pump out in-engine hot water, cold water is pumped into, to keep the normal operation of engine.So
And above structure water pump the exposed outside in the pump housing of gear and pump shaft use single-bearing mounting structure, be used for a long time it is lower will
The service performance of gear is influenced, or even is easily damaged, and existing pump shaft would generally use single bearing mounting structure, it is practical
It will affect the stability of driving pump shaft rotation in use process.
Summary of the invention
The present invention provides a kind of automobile cooling water pump, and the automobile cooling water pump is structurally reasonable, and gear drives pump shaft
Stability when rotation is good.
In order to solve the problems existing in background technology, the invention adopts the following technical scheme: a kind of cooling water car
Pump, including the pump housing, pump shaft, impeller, gear and water seal arrangement, the pump shaft is inserted in the inner cavity of the pump housing and one end is extended
The pump housing, the water seal arrangement are set on pump shaft and the inner cavity of the pump housing are separated into upper and lower cavity, and the gear is installed on water
Pump shaft extends one end of the pump housing, and the impeller is installed on one end that pump shaft is located at the lower chamber, the upper end of the pump housing
Be provided with bearing block, the bearing block passes through pump shaft and extends one end of the pump housing and connect with the pump housing, the bearing block and
Driving chamber is formed between the pump housing, the gear is helical gear and is located in the driving chamber that the side of the bearing block is equipped with
The external port of the power interface communicated with driving chamber, the power interface is equipped with connecting flange, and the pump shaft is located at gear
Upper and lower ends are respectively installed with the first deep groove ball bearing and the second deep groove ball bearing, and the outer ring of first deep groove ball bearing is fixed
The upper port inner wall of bearing block, second deep groove ball bearing is located in upper cavity and pump housing inner wall is fixed in its outer ring.
The cooling water car pump configuration is more compact, by the pump housing be equipped with bearing block, make gear be located at bearing block with
It, can be persistently steady so as to protect gear to be not easily susceptible to external impact damage well in driving chamber between the pump housing
The rotation of fixed driving pump shaft is rotated with the rotation that impeller is stable using the power-equipments sliding tooth wheel such as motor, is moved
The line shaft of power equipment is sequentially connected with power gear, and power gear is arranged at power interface, and with gear engaged transmission, and
It is arranged by the duplex bearing of the first deep groove ball bearing and the second deep groove ball bearing to replace the single bearing structure energy in original structure
Stability when enough installing and using the pump shaft of water pump is more preferable, that is, can guarantee the stability of impeller work.
The further setting of the present invention: the pump shaft, which is on the position of upper cavity, is set with packet skeleton oil in one
Envelope, the interior packet outside framework oil seal are close proximity to the lower end side of the second deep groove ball bearing, and second deep groove ball bearing and
Circlip for shaft is provided between interior packet outside framework oil seal.
The setting of interior packet outside framework oil seal can make the better tightness between upper and lower cavity, and circlip for shaft can
The abrasion that contacts with each other between interior packet outside framework oil seal and the second deep groove ball bearing is avoided, while being conducive to further increase pump body
Sealing performance.
The further setting of the present invention: the pump housing inner wall, which is located at the position of the second deep groove ball bearing upper surface, is equipped with ring
Connected in star, the annular groove are equipped with corresponding circlip for hole, and institute is tightly attached in the lower end surface of the circlip for hole
State the upper surface of the second deep groove ball bearing.When the pump housing is by external greater impact, circlip for hole can be good at preventing
Second deep groove ball bearing moves up, to keep good service performance.
The further setting of the present invention: the impeller includes impeller buss and impeller body, outside the impeller body
Several impeller blades of circumferentially spaced setting are formed, the impeller buss interference is located at lower chamber one end in pump shaft
End, the impeller buss is metal material, and the impeller body is engineering plastics material, the impeller buss and the leaf
Wheel ontology injection molding is integrated.
The further setting of the present invention: it is connected between the bearing block and the pump housing by multiple soket head cap screws.
Can be made by the connection of soket head cap screw it is convenient for disassembly and assembly between bearing block and the pump housing, convenient for the inspection of internal structure
It repairs.
The beneficial effects of the present invention are: a kind of cooling water car pump configuration of the invention is more compact, assembles more square
Just, make the stability of gear driving pump shaft rotation more lasting, be conducive to keep good transfer efficiency.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In the accompanying drawings, similar element or portion
Divide and is generally identified by similar appended drawing reference.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is the structural schematic diagram of the automobile cooling water pump in the present invention.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solution of the present invention.Following embodiment is only used for
Clearly illustrate technical solution of the present invention, therefore be only used as example, and cannot be used as a limitation and limit protection model of the invention
It encloses.
It should be noted that unless otherwise indicated, technical term or scientific term used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
As shown in Figure 1, a kind of automobile cooling water pump of the embodiment of the present invention, including the pump housing 1, pump shaft 2, impeller 3, gear
4 and water seal arrangement 5, pump shaft 2 is inserted in the inner cavity of the pump housing 1 and the pump housing 1 is extended in one end, and further, water seal arrangement 5 is set with
In being separated into upper and lower cavity 11,12 on pump shaft 2 and by the inner cavity of the pump housing 1, gear 4 is installed on pump shaft 2 and extends the pump housing 1
One end, impeller 3 is installed on one end that pump shaft 2 is located in lower chamber 12, further, is fixed with bearing in the upper end of the pump housing 1
Seat 6, one end (i.e. upper end) that pump shaft 2 extends the pump housing 1 pass through bearing block 6, form driving chamber between bearing block 6 and the pump housing 1
13, gear 4 is helical gear and is located in driving chamber 13, further, is covered respectively in the upper and lower ends that pump shaft 2 is located at gear 4
Equipped with the first deep groove ball bearing 7 and the second deep groove ball bearing 8,7 outer ring of the first deep groove ball bearing is in the upper port of bearing block 6
Wall, and the second deep groove ball bearing 8 is located in upper cavity 11 and 1 inner wall of the pump housing is fixed in its outer ring, by being equipped with axis on the pump housing 1
Hold seat 6, make gear 4 in the driving chamber 13 between bearing block 6 and the pump housing 1, so as to protect well gear 4 not vulnerable to
Damaged to external impact, can lasting stability driving pump shaft 2 rotation, with the rotation that impeller 3 is stable, institute
The side for stating bearing block 6 is equipped with the power interface 17 communicated with driving chamber, and the external port of the power interface 17 is equipped with connection method
Orchid can be installed a seal closure by connecting flange, be rotated using the power-equipments sliding tooth wheel such as motor, and power-equipment moves
Power axis is sequentially connected with power gear, and power gear is arranged at power interface 17, and with the engaged transmission of gear 4, seal closure cover
Outside power gear, the wheel shaft of power gear is installed on the inside of seal closure by bearing and machine envelope;The wheel shaft of power gear from
It stretches out in seal closure, and is sequentially connected with power-equipment;And pass through pair of the first deep groove ball bearing 7 and the second deep groove ball bearing 8
Stability when bearing setting is to replace the single bearing structure in original structure that pump shaft 2 can be made to install and use is more preferable.
In the present embodiment, pump shaft 2, which is on the position of upper cavity 11, is set with packet outside framework oil seal 9 in one, interior packet bone
Frame oil sealing 9 is close proximity to the lower end side of the second deep groove ball bearing 8, and sets between the second deep groove ball bearing 8 and Nei Bao outside framework oil seal 9
It is equipped with circlip for shaft 10, the setting of interior packet outside framework oil seal 9 can make the better tightness between upper and lower cavity 11,12, and
Circlip for shaft 10 can be avoided the friction that contacts with each other between interior packet outside framework oil seal 9 and the second deep groove ball bearing 8, be conducive into
One step improves the sealing performance inside the pump housing 1.
In the present embodiment, 1 inner wall of the pump housing, which is located at the position of 8 upper surface of the second deep groove ball bearing, is equipped with annular groove 14,
Annular groove 14 is equipped with corresponding circlip for hole 15, and the second deep-groove ball is tightly attached in the lower end surface of circlip for hole 15
The upper surface of bearing 8, so that circlip for hole 15 can be good at preventing second when the pump housing 1 is by external greater impact
Deep groove ball bearing 8 moves up, to keep good service performance.
In the present embodiment, impeller 3 includes impeller buss 31 and impeller body 32, forms edge outside the impeller body 32
Circumferentially spaced several impeller blades, 31 interference of impeller buss are located at 12 one end of lower chamber in pump shaft 2
End, the impeller buss 31 are metal material, and the impeller body 32 is engineering plastics material, the impeller buss 31 and institute
It states the injection molding of impeller body 32 to be integrated, the outside of the impeller buss 31 has circumferentially spaced positioning protrusion, described
There is circumferentially spaced positioning groove inside impeller body 32, the positioning protrusion correspondence is moulded in positioning groove,
So that the two is fixedly connected, effect is good, and the process for saving man-made assembly.
In the present embodiment, is connected between bearing block 6 and the pump housing 1 by multiple soket head cap screws 16, pass through soket head cap screw
16 connection can make it is convenient for disassembly and assembly between bearing block 6 and the pump housing 1, convenient for the maintenance of internal structure.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations;To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement;And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.