CN202170867U

CN202170867U - Fluid pumping device

Info

Publication number: CN202170867U
Application number: CN2011201833527U
Authority: CN
Inventors: 郭鲁青; 吴春发
Original assignee: Johnson Electric Shenzhen Co Ltd
Current assignee: Johnson Electric Shenzhen Co Ltd
Priority date: 2011-06-01
Filing date: 2011-06-01
Publication date: 2012-03-21
Anticipated expiration: 2021-06-01

Abstract

The utility model discloses a fluid pumping device, which includes a motor and a gear pump assembly, wherein the gear pump includes a housing, a pump chamber confined by the housing, an inlet and an outlet communicated with the pump chamber, and a driving gear and a driven gear both arranged in the pump chamber; the driving gear is driven by an output shaft of a motor; the driven gear is engaged with the driving gear and rotatably supported on a driven shaft; and the driving gear and the driven gear are mainly made of polyphenylene sulfide. The fluid pumping device provided by the embodiment of the utility model ensures safety, reliability and stability, and has a longer service life.

Description

Fluid pumping apparatus

Technical field

The utility model relates to fluid pumping apparatus, is particularly useful for the automatic supply equipment of beverage.

Background technique

The use of the automatic supply equipment of beverage more and more widely.After the user pressed respective switch or drops into coin, equipment can be seen beverage off through its inner pumping installations automatically.Because pumping installations determines directly whether the automatic supply equipment of beverage is available, therefore, hope to make pumping installations guaranteeing having the long as far as possible life-span under the safe and reliable prerequisite.

The utility model provides a kind of novel fluid pumping installations that is intended to address the above problem.

The model utility content

The utility model provides a kind of fluid pumping apparatus; Comprise motor and gear pump assembly; The pump chamber that said gear pump assembly comprises housing, defined by housing; With pump chamber inlet communicating and outlet, be located at actuation gear and driven gear in the pump chamber, said actuation gear is driven by the output shaft of said motor, said driven gear meshes also with actuation gear and is supported on rotationally on the driven shaft; Wherein, said driven gear and actuation gear are processed by the material that mainly consists of polyphenylene sulfide PPS.

Preferable, the ratio of PPS is 40%～80% in the said material.

Preferable, said material mainly is made up of PPS and glass.

Preferable, the ratio of glass is 20～60% in the said material, the ratio of PPS is 40%～80%.

Preferable, the material that said housing by the material that mainly consists of polyphthalamide PPA, mainly consists of the material of PPS or mainly consists of PEI PEI is processed.

Preferable, said driven shaft is processed by stupalith.

Preferable, said device also comprises at the top board of said gear pump assembly one side, reaches at intermediate plate and the base plate of gear pump assembly opposite side between gear pump assembly and motor.

Preferable, said top board and intermediate plate are processed by rigid material.

Preferable, said housing defines first shoulder and second shoulder, reaches respectively from the two shoulders outward extending vertically first wall portion and the second wall portion above pump chamber; One lid is installed between first shoulder and first wall portion with closed pump chamber; One seal washer is installed between second shoulder, the second wall portion and the junction point that covers the said lid and first shoulder leaks out from said junction to prevent the fluid in the pump chamber.

Preferable, said housing is formed with a supporting base towards a side of motor, and the shaft seal sealing ground of the sheathed said output shaft in sealing ground is installed in this supporting base to prevent that fluid in the pump chamber is along the inwall leakage of output shaft and supporting base; Said shaft seal is processed by the material that mainly consists of fluorine rubber FKM and polytetrafluoroethylene PTFE.

In order further to understand the characteristic and the technology contents of the utility model, see also following detailed description and accompanying drawing, yet institute's accompanying drawing only provides reference and explanation usefulness, is not to be used for the utility model is limited about the utility model.

Description of drawings

In the accompanying drawing:

Fig. 1 illustrates the ssembly drawing of the utility model one embodiment's fluid pumping apparatus;

Fig. 2 illustrates the exploded view of said fluid pumping apparatus;

Fig. 3 illustrates the gear pump assembly of said fluid pumping apparatus;

Fig. 4 partly illustrates the exploded view of said fluid pumping apparatus.

Embodiment

Below in conjunction with accompanying drawing, describe in detail through embodiment the utility model, the technological scheme that makes the utility model and other beneficial effects is obvious.

Fig. 1 and Fig. 2 illustrate the ssembly drawing and the exploded view of the utility model one embodiment's fluid pumping apparatus respectively.Said fluid pumping apparatus 10 is particularly useful for the automatic supply equipment of beverage (like the coffee vending machine) etc., comprises motor 30, gear pump assembly 40, at the top board 60 of gear pump assembly 40 1 sides, and at intermediate plate 70 and the base plate 80 of gear pump assembly 40 opposite sides between gear pump assembly 40 and motor 30.

The bottom of motor 30 has a pair of power connection end 32 and is used to connect external power supply, and its output shaft 34 supports and pass base plate 80 and intermediate plate 70 and gear pump assembly 40 couplings by bearing 36; The end cap of motor 30 contiguous gear pump assembly 40 1 sides is provided with mounting hole 38.Preferable, motor 30 is a direct current motor, its output shaft 34 can be processed by stainless steel.

Gear pump assembly 40 has molded and shaped housing 41.With reference to figure 3 and Fig. 4, housing 41 is roughly rectangular in the lump, and Qi Sijiao offers assembling through hole 41a.The side that housing 41 deviates from motor 30 defines a cavity 42 as pump chamber.Housing 41 is provided with inlet 43 and communicates with pump chamber 42 respectively with outlet 44.Be equipped with actuation gear 45 and driven gear 46 in the pump chamber 42.Consult Fig. 3 in the lump, actuation gear 45 is connected with the output shaft 34 of motor 30 to rotate with output shaft 34, and driven gear 46 and actuation gear 45 mesh and be rotatably mounted in the support of the driven shaft 47 of housing 41.After motor 30 energisings, actuation gear 45 complements each other to form pumping function with driven gear 46, and fluid is discharged in the 43 suction pump chambers 42 that enter the mouth and via outlet 44.Housing 41 defines two

shoulders

48,49 and respectively from two shoulders, 48,49 extended vertically two

wall portions

50,51 above pump chamber 42.One lid 52 is installed between shoulder 48 and the wall portion 50, is used for closed pump chamber 42.One seal washer 53 is installed between shoulder 49, wall portion 51 and the top board 60 and covers the junction point of lid 52 and shoulder 48, is used to prevent that the fluids in the pump chamber 42 from leaking out from said junction.Housing 41 forms supporting base 55 that supports a shaft seal (not shown) and the boss 54 that supports driven shaft 47 rotationally towards a side of motor 30; Be sheathed on to said shaft seal sealing output shaft 34 and sealing ground and be installed in supporting base 55, to prevent that fluid in the pump chamber 42 is along the inwall leakage of output shaft 34 and supporting base 55.

Preferable, in the present embodiment, lid 52 is processed by stainless steel; Seal washer 53 is processed by silica gel; Shaft seal is processed by the mixture of fluorine rubber (FKM) and polytetrafluoroethylene (PTFE), can when guaranteeing sealing effect, have preferably wear resistance, acid resistance, and resistant of high or low temperature; Driven shaft 47 is processed by stupalith, have wear resistance and acid resistance preferably, so the life-span is longer; Actuation gear 45 and driven gear 46 are by mainly consisting of polyphenylene sulfide (Polyphenylene sulfide; Abbreviation PPS) material is processed, and the material of for example mainly being made up of PPS and glass is processed, wherein; The ratio of glass is 20%～60%, and the ratio of PPS is 40%～80%; Housing 41 is processed by the material that mainly consists of polyphthalamide (Polyphthalamide is called for short PPA).As substituting, housing 41 also can be processed by the material that mainly consists of PEI (PEI) or mainly consist of PPS.

The central authorities of intermediate plate 70 establish key hole shape penetration hole 72, and the output shaft 34 of the big block supply machine 30 of penetration hole 72 passes and accommodate bearing 36, are complementary to accommodate boss 54 than boss 54 shapes of zonule and housing 41.The central authorities of base plate 80 establish the rotating shaft 34 of penetration hole 82 power supply machines 30 and pass and accommodate bearing 36.The radial shape of top board 60, intermediate plate 70 and base plate and size are corresponding basically with housing 41, and each comfortable four drift angle is all offered pilot hole with the corresponding part, position of the pilot hole 41a of housing 41, and four fixedly are assembled together through four screws of growing 94.Intermediate plate 70 and base plate 80 are provided with a pair of mounting hole in the corresponding part, position with the mounting hole 38 of motor 30, and the three fixedly is assembled together through two short screw (not shown)s.Preferable, top board 60 and intermediate plate 70 are processed by stainless steel, and base plate 80 is made of plastics.

The utility model embodiment's fluid pumping apparatus is when working procedure, and two intermeshed

gear

45,46 in the pump chamber 42 of housing 41 and the pump chamber can be immersed in the beverage.Because PPS has extraordinary low water absorbable, even therefore long-time the immersion, two gears of being processed by this

material

45,46 can not expand distortion yet; Both can not produce excessive engagement so that stall; And the adding of glass makes gear have mechanical strength preferably, therefore; Better performances such as the resistance to high temperature of two gears, wear resistance, acid fastness and Security among the utility model embodiment, and the life-span is longer.Further; Adopt the PPA material to process housing among the utility model embodiment; Measurable dilatancy can not take place even be immersed in for a long time in the beverage yet, and then have influence on the stability of fluid flow pressure, therefore can when guaranteeing than stability, effectively practice thrift cost.In addition, top board, intermediate plate are processed by stainless steel material in the utility model, and base plate is made of plastics, and can when guaranteeing mechanical strength, practice thrift cost.

The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.

Claims

1. fluid pumping apparatus; Comprise motor and gear pump assembly; The pump chamber that said gear pump assembly comprises housing, defined by housing; With pump chamber inlet communicating and outlet, be located at actuation gear and driven gear in the pump chamber, said actuation gear is driven by the output shaft of said motor, said driven gear meshes also with actuation gear and is supported on rotationally on the driven shaft; It is characterized in that said driven gear and actuation gear are processed by the material that mainly consists of polyphenylene sulfide PPS.

2. device as claimed in claim 1 is characterized in that, the material that said housing by the material that mainly consists of polyphthalamide PPA, mainly consists of the material of PPS or mainly consists of PEI PEI is processed.

3. device as claimed in claim 1 is characterized in that said driven shaft is processed by stupalith.

4. device as claimed in claim 1 is characterized in that, said device also comprises at the top board of said gear pump assembly one side, reaches at intermediate plate and the base plate of gear pump assembly opposite side between gear pump assembly and motor.

5. device as claimed in claim 4 is characterized in that said top board and intermediate plate are processed by rigid material.

6. device as claimed in claim 1 is characterized in that, said housing defines first shoulder and second shoulder, reaches respectively from the two shoulders outward extending vertically first wall portion and the second wall portion above pump chamber; One lid is installed between first shoulder and first wall portion with closed pump chamber; One seal washer is installed between second shoulder, the second wall portion and the junction point that covers the said lid and first shoulder leaks out from said junction to prevent the fluid in the pump chamber.

7. device as claimed in claim 1; It is characterized in that; Said housing is formed with a supporting base towards a side of motor, and the shaft seal sealing ground of the sheathed said output shaft in sealing ground is installed in this supporting base to prevent that fluid in the pump chamber is along the inwall leakage of output shaft and supporting base.