CN205225669U - Miniature plastic class gear pump device - Google Patents
Miniature plastic class gear pump device Download PDFInfo
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- CN205225669U CN205225669U CN201521090443.0U CN201521090443U CN205225669U CN 205225669 U CN205225669 U CN 205225669U CN 201521090443 U CN201521090443 U CN 201521090443U CN 205225669 U CN205225669 U CN 205225669U
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- gear
- pump
- pump housing
- actuation
- pump device
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Abstract
The utility model belongs to the technical field of the gear pump, in particular to miniature plastic class gear pump device, including drive arrangement and inclosed pump body, drive arrangement includes actuating mechanism, driving gear, one -level drive gear, transmission shaft and second grade drive gear, actuating mechanism's output shaft and initiative gear connection, and the driving gear meshes with the meshing of one -level drive gear, one -level drive gear and second grade drive gear, is provided with drive arrangement 0's a drive arrangement 1 and the 2nd drive arrangement 1 in the pump body at least, the axial of actuating mechanism's output shaft and a drive arrangement 1's axial drive arrangement 5. Compared with the prior art, the utility model discloses give up traditional " parallel transmission " mode, adopt the mode of novel " vertical drive " for the axial of actuating mechanism's output shaft is 90 with the interior drive gear's of the pump body axial, thereby makes the pump body can adopt " the parallel goes out water " the mode that is favorable to the medium to flow, and this mode is favorable to the steady in the same direction as sliding of pump body inside flow field, reduced efficiency loss.
Description
Technical field
The utility model belongs to gear pump technical field, particularly the miniature plastic gear pump device of one.
Background technique
Miniature plastic gear pump device known at present, due to the precision problem of plastic cement part, generally there is suction capacity lower, the shortcoming such as not easily form vacuum pressure in the airtight pump housing and efficiency is lower, be only applicable to the comparatively near and occasion that required precision is not high of medium distance pump-unit.And be improve its performance, people often do not stint to increase cost, and the dimensional accuracy improving plastic cement part realizes higher suction capacity, therefore miniature plastic gear pump device price general charged of the prior art is more expensive.
In addition, plastic cement gear pump arrangement known at present, the kind of drive of the actuation gear in its motor and the pump housing, generally adopt " parallel mode ", the axis of the gear shaft namely in the axis of motor output shaft and the pump housing is consistent, the transmission of this mode seems easier on structure space, but when this type of gear pump is installed in slender space, conveniently gear pump draining, generally drain opening can be arranged on gear pump top, namely suction port and drain opening are not point-blank, this can cause the confusion of gear pump interior flow field, cause loss in efficiency.
In view of this, necessaryly provide a kind of miniature plastic gear pump device, its price is lower, and suction capacity is strong, and can meet the requirement of slender installation space.
Model utility content
The purpose of this utility model is: for the deficiencies in the prior art, and provides a kind of miniature plastic gear pump device, and its price is lower, and suction capacity is strong, and can meet the requirement of slender installation space.
To achieve these goals, the utility model adopts following technological scheme:
Miniature plastic gear pump device, comprise drive unit and the airtight pump housing, described drive unit comprises driving mechanism, driving gear, primary transmission gear, transmission shaft and secondary transmission gear, the output shaft of described driving mechanism is connected with described driving gear, described driving gear and described primary transmission gears meshing, described primary transmission gear and described secondary transmission gears meshing, intermeshing first actuation gear and the second actuation gear is at least provided with in the described pump housing, one end of described transmission shaft and described secondary transmission gear interference fit, the other end of described transmission shaft and described first actuation gear interference fit, and the axis of the output shaft of described driving mechanism is axially mutually vertical with described first actuation gear.
One as the miniature plastic gear pump device of the utility model is improved, and described driving gear is set to bevel gear, and described primary transmission gear is set to bevel gear.
One as the miniature plastic gear pump device of the utility model is improved, and described driving mechanism is set to micro motor.
One as the miniature plastic gear pump device of the utility model is improved, described gear pump arrangement also comprises upper shell and lower shell body, described upper shell is connected with described lower shell body buckle, described upper shell and described lower shell body are formed and are used for accommodating described driving mechanism, described driving gear, the containing space of described primary transmission gear and described secondary transmission gear, the other end of described transmission shaft through after the through hole on described upper shell with described first actuation gear interference fit, described primary transmission gear is fixed on described lower shell body by axle, the upper surface of described upper shell is formed with the containing groove for placing the described pump housing.
One as the miniature plastic gear pump device of the utility model is improved, the described pump housing comprises pump body top cover, pump housing lower cover, the first seal ring, the second seal ring, suction port and drain opening, described pump body top cover is connected by locking nut with described pump housing lower cover, described first seal ring is arranged between described pump body top cover and described pump housing lower cover, described second seal ring is arranged between described pump housing lower cover and described transmission shaft, and described suction port and described drain opening are arranged at the both sides of described pump housing lower cover respectively.
One as the miniature plastic gear pump device of the utility model is improved, and the upper surface of described first actuation gear and described second actuation gear is placed with thin slice, and described thin slice is set to wear resistant plastic thin slice or sheet metal.
One as the miniature plastic gear pump device of the utility model is improved, and the upper surface of described thin slice is provided with Elastic force support parts, and described Elastic force support parts are plastic elastomeric, rubber elastomer or Synthetic Oil.
One as the miniature plastic gear pump device of the utility model is improved, and described primary transmission gear comprises the first gear and the second gear, and described first gear engages with described driving gear, described second gear and described secondary transmission gears meshing.
One as the miniature plastic gear pump device of the utility model is improved, described secondary transmission gear comprises gear and is arranged at some gear hubs in described gear, is formed with the passage can passed for described transmission shaft between some described gear hubs.
One as the miniature plastic gear pump device of the utility model is improved, and described transmission shaft comprises interconnective cylindrical portion and flat portion, and the shape of the axis hole of described first actuation gear is mated with described flat portion.
Working principle of the present utility model is: driving mechanism drives driving gear, driving gear drives primary transmission gear, primary transmission gear then drives secondary transmission gear, thus the power exported from driving mechanism reaches through slowing down and exports certain rotating speed and moment of torsion and order about transmission shaft and drive the first actuation gear in the airtight pump housing and the second actuation gear to engage each other, in the pump housing, the first actuation gear and the second actuation gear engage each other and rotate thus produce certain vacuum, barometric pressure can by medium (as liquid, gas) be pressed in the pump housing from the position that distance gear pump arrangement is higher, the drive of the teeth groove of the first actuation gear and the second actuation gear and engagement in the pump housing, thus excavationg pump is external, reach the ability of fed sheet of a media.
Relative to prior art, the utility model abandons traditional " parallel drive " mode, adopt the mode of novel " vertical-transmission ", the axis making actuation gear in the axis of the output shaft of driving mechanism and the pump housing (the first actuation gear and the second actuation gear) is 90 °, thus the pump housing can be adopted be conducive to " parallel water outlet " mode of media flow, namely suction port is axially axially consistent with drain opening, and this mode is conducive to the steadily smooth of pump body flow field, and lower efficiency loss.The utility model can meet the requirement of slender installation space.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the utility model and Advantageous Effects thereof are described in detail, wherein:
Fig. 1 is decomposition texture schematic diagram of the present utility model.
Fig. 2 is the perspective view (removal upper shell) of drive unit in the utility model.
Fig. 3 is the perspective view of transmission shaft and secondary transmission gear in the utility model.
Fig. 4 is plan structure schematic diagram of the present utility model (removal pump body top cover).
Fig. 5 is the structural representation of A-A section in Fig. 3.
Fig. 6 is the sectional structure schematic diagram of the pump housing airtight in the utility model.
Wherein:
1-drive unit;
11-driving mechanism, 12-driving gear, 13-primary transmission gear, 131-first gear, 132-second gear, 14-transmission shaft, 141-cylindrical portion, 142-flat portion, 15-secondary transmission gear, 151-gear, 152-gear hub, 153-passage, 16-upper shell, 161-through hole, 162-containing groove, 17-lower shell body, 18-axle;
The 2-pump housing;
20-suction port, 21-first actuation gear, 22-second actuation gear, 23-pump body top cover, 24-pump housing lower cover, 25-first seal ring, 26-second seal ring, 27-drain opening, 28-locking nut, 29-thin slice, 210-Elastic force support parts.
Embodiment
Below in conjunction with embodiment and Figure of description, the utility model is described in further detail, but mode of execution of the present utility model is not limited thereto.
As shown in Figures 1 to 6, the miniature plastic gear pump device that the utility model provides, comprise drive unit 1 and the airtight pump housing 2, drive unit 1 comprises driving mechanism 11, driving gear 12, primary transmission gear 13, transmission shaft 14 and secondary transmission gear 15, the output shaft of driving mechanism 11 is connected with driving gear 12, driving gear 12 engages with primary transmission gear 13, primary transmission gear 13 engages with secondary transmission gear 15, intermeshing first actuation gear 21 and the second actuation gear 22 is at least provided with in the pump housing 2, one end of transmission shaft 14 and secondary transmission gear 15 interference fit, the other end of transmission shaft 14 and the first actuation gear 13 interference fit, and the axis of the output shaft of driving mechanism 11 is axially mutually vertical with the first actuation gear 21, to meet the requirement of slender installation space.
Driving gear 12 is set to bevel gear, and primary transmission gear 13 is set to bevel gear.Because driving gear 12 and primary transmission gear 13 have employed bevel gear and bevel gear engagement driving mode respectively, can realize " vertical-transmission ", the axis making actuation gear in the axis of the output shaft of driving mechanism 11 and the pump housing 2 (first actuation gear 21 and the second actuation gear 22) is 90 °, the utility model so just can be made to be applied in slender space, thus " parallel water outlet " mode being conducive to media flow can be adopted, namely suction port is axially axially consistent with drain opening.
Driving mechanism 11 is set to micro motor, and volume is little, and can provide driving force.When micro motor rotates, driving gear 12 and primary transmission gear 13 engage each other, and drive it to rotate in the opposite direction, primary transmission gear 13 engages with secondary transmission gear 15 again, again because secondary transmission gear 15 and transmission shaft 14 are close-fitting (interference fit), therefore when secondary transmission gear 15 rotates, transmission shaft 14 also synchronous rotary, and then drive the first actuation gear 21 in the airtight pump housing 2 and the second actuation gear 22 to rotate.
Gear pump arrangement also comprises upper shell 16 and lower shell body 17, upper shell 16 is connected with lower shell body 17 buckle, upper shell 16 and lower shell body 17 form the containing space being used for accommodating driving mechanism 11, driving gear 12, primary transmission gear 13 and secondary transmission gear 14, the other end of transmission shaft 14 through after the through hole 161 on upper shell 16 with the first actuation gear 21 interference fit, primary transmission gear 21 is fixed on lower shell body 17 by axle 18, and the upper surface of upper shell 16 is formed with the containing groove 162 for placing the pump housing 2.Upper shell 16 plays a part to connect the pump housing 2 and drive unit 1.
The pump housing 2 comprises pump body top cover 23, pump housing lower cover 24, first seal ring 25, second seal ring 26, suction port 20 and drain opening 27, pump body top cover 23 is connected by locking nut 28 with pump housing lower cover 24, first seal ring 25 is arranged between pump body top cover 23 and pump housing lower cover 24, second seal ring 26 is arranged between pump housing lower cover 24 and transmission shaft 14, suction port 20 and drain opening 27 are arranged at the both sides of pump housing lower cover 24 respectively, and suction port 20 and drain opening 27 are parallel to each other.With locking nut 28 fix pump body top cover 23 and pump housing lower cover 24 time compress the first seal ring 25, form closed area.First actuation gear 21 and the second actuation gear 22 are placed in this closed area, and the first actuation gear 21 rotates under the drive of transmission shaft 14, thus itself and the second actuation gear 22 are engaged each other.By the engagement of the first actuation gear 21 and the second actuation gear 22, gas is first brought into by the teeth groove part of the first actuation gear 21 and the second actuation gear 22, is discharged in the position of contact points, forms vacuum.
The upper surface of the first actuation gear 21 and the second actuation gear 22 is placed with thin slice 29, and thin slice 29 is set to wear resistant plastic thin slice or sheet metal.In the utility model, thin slice 29 is one piece.
The upper surface of thin slice is provided with Elastic force support parts 210, and Elastic force support parts 210 are plastic elastomeric, rubber elastomer or the Synthetic Oil with certain viscosity.In the utility model, Elastic force support parts 210 are two pieces, lay respectively at directly over the first actuation gear 21 and the second actuation gear 22, utilize the compression rebounding force of Elastic force support parts 210, the upper surface gentle touchdown of the one side of thin slice 29 and the first actuation gear 21 and the second actuation gear 22 can be made, reduce the inner space of the airtight pump housing 2 and outside space, when the first actuation gear 21 and the second actuation gear 22 are moved, produce larger degree of vacuum.
That is, the utility model by increasing by wear resistant plastic thin slice or a sheet metal in the airtight pump housing 2, and Elastic force support parts 210(plastic cement is set on thin slice 29, rubber elastomer or Synthetic Oil), utilize plastic elastomeric, the elasticity of rubber elastomer or Synthetic Oil, promote the surface contact of the first actuation gear 21 and the second actuation gear 22 in wear resistant plastic thin slice or sheet metal one end and the pump housing 2, to reduce the airtight cavity space of the pump housing 2 and outside space, larger vacuum can be produced when allowing miniature plastic gear pump device work, thus improve its suction capacity, and then shorten the time lag that gear pump starts to water outlet.
Primary transmission gear 13 comprises the first gear 131 and the second gear 132, first gear 131 and the second gear 132 and forms a bevel gear, and the first gear 131 engages with driving gear 12, and the second gear 132 engages with secondary transmission gear 15.
Some the gear hubs 152 that secondary transmission gear 15 comprises gear 151 and is arranged in gear 151, are formed with the passage 153 can passed for transmission shaft 14 between some gear hubs 152.Secondary transmission gear 15 structural stability of this structure is reliable, reliable transmission.
The shape that transmission shaft 14 comprises the axis hole of interconnective cylindrical portion 141 and flat portion 142, first actuation gear 21 is mated with flat portion 142, and by the transmission of transmission shaft 14, driving force can be passed to the first actuation gear 21 by secondary transmission gear 15.
Working principle of the present utility model is: driving mechanism 11 drives driving gear 12, driving gear 12 drives primary transmission gear 13, primary transmission gear 13 drives secondary transmission gear 14, thus the power exported from driving mechanism 11 reaches through slowing down and exports certain rotating speed and moment of torsion and order about transmission shaft 14 and drive the first actuation gear 21 in the airtight pump housing 2 and the second actuation gear 22 to engage each other, in the pump housing 2, the first actuation gear 21 and the second actuation gear 22 engage each other and rotate thus produce certain vacuum, barometric pressure can by medium (as liquid, gas) be pressed in the pump housing 2 from the position that distance gear pump arrangement is higher, the drive of the teeth groove of the first actuation gear 21 and the second actuation gear 22 and engagement in the pump housing 2, thus discharge outside the pump housing 2, reach the ability of fed sheet of a media.
In a word, the utility model abandons traditional " parallel drive " mode, adopt the mode of novel " vertical-transmission ", the axis making actuation gear in the axis of the output shaft of driving mechanism 11 and the pump housing 2 (first actuation gear 21 and the second actuation gear 22) is 90 °, thus the pump housing 2 can be adopted be conducive to " parallel water outlet " mode of media flow, namely suction port is axially axially consistent with drain opening, and this mode is conducive to the steadily smooth of the pump housing 2 interior flow field, and lower efficiency loss.The utility model can meet the requirement of slender installation space.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also change above-mentioned mode of execution and revise.Therefore, the utility model is not limited to embodiment disclosed and described above, also should fall in the protection domain of claim of the present utility model modifications and changes more of the present utility model.In addition, although employ some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (10)
1. miniature plastic gear pump device, it is characterized in that: comprise drive unit and the airtight pump housing, described drive unit comprises driving mechanism, driving gear, primary transmission gear, transmission shaft and secondary transmission gear, the output shaft of described driving mechanism is connected with described driving gear, described driving gear and described primary transmission gears meshing, described primary transmission gear and described secondary transmission gears meshing, intermeshing first actuation gear and the second actuation gear is at least provided with in the described pump housing, one end of described transmission shaft and described secondary transmission gear interference fit, the other end of described transmission shaft and described first actuation gear interference fit, and the axis of the output shaft of described driving mechanism is axially mutually vertical with described first actuation gear.
2. miniature plastic gear pump device according to claim 1, is characterized in that: described driving gear is set to bevel gear, described primary transmission gear is set to bevel gear.
3. miniature plastic gear pump device according to claim 1, is characterized in that: described driving mechanism is set to micro motor.
4. miniature plastic gear pump device according to claim 1, it is characterized in that: described gear pump arrangement also comprises upper shell and lower shell body, described upper shell is connected with described lower shell body buckle, described upper shell and described lower shell body are formed and are used for accommodating described driving mechanism, described driving gear, the containing space of described primary transmission gear and described secondary transmission gear, the other end of described transmission shaft through after the through hole on described upper shell with described first actuation gear interference fit, described primary transmission gear is fixed on described lower shell body by axle, the upper surface of described upper shell is formed with the containing groove for placing the described pump housing.
5. miniature plastic gear pump device according to claim 1, it is characterized in that: the described pump housing comprises pump body top cover, pump housing lower cover, the first seal ring, the second seal ring, suction port and drain opening, described pump body top cover is connected by locking nut with described pump housing lower cover, described first seal ring is arranged between described pump body top cover and described pump housing lower cover, described second seal ring is arranged between described pump housing lower cover and described transmission shaft, and described drain opening and described suction port are arranged at the both sides of described pump housing lower cover respectively.
6. miniature plastic gear pump device according to claim 5, is characterized in that: the upper surface of described first actuation gear and described second actuation gear is placed with thin slice, and described thin slice is set to wear resistant plastic thin slice or sheet metal.
7. miniature plastic gear pump device according to claim 6, is characterized in that: the upper surface of described thin slice is provided with Elastic force support parts, and described Elastic force support parts are plastic elastomeric, rubber elastomer or Synthetic Oil.
8. miniature plastic gear pump device according to claim 1, it is characterized in that: described primary transmission gear comprises the first gear and the second gear, described first gear engages with described driving gear, described second gear and described secondary transmission gears meshing.
9. miniature plastic gear pump device according to claim 1, it is characterized in that: described secondary transmission gear comprises gear and is arranged at some gear hubs in described gear, between some described gear hubs, be formed with the passage can passed for described transmission shaft.
10. miniature plastic gear pump device according to claim 1, is characterized in that: described transmission shaft comprises interconnective cylindrical portion and flat portion, and the shape of the axis hole of described first actuation gear is mated with described flat portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521090443.0U CN205225669U (en) | 2015-12-24 | 2015-12-24 | Miniature plastic class gear pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521090443.0U CN205225669U (en) | 2015-12-24 | 2015-12-24 | Miniature plastic class gear pump device |
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| Publication Number | Publication Date |
|---|---|
| CN205225669U true CN205225669U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521090443.0U Active CN205225669U (en) | 2015-12-24 | 2015-12-24 | Miniature plastic class gear pump device |
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| CN (1) | CN205225669U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204363A (en) * | 2016-12-20 | 2018-06-26 | Mgi库贴公司 | Board-like gear pump and hydraulic stator pin |
| CN109973384A (en) * | 2017-12-28 | 2019-07-05 | 比亚迪股份有限公司 | Oil pump component and electric oil pump assembly and vehicle with it |
-
2015
- 2015-12-24 CN CN201521090443.0U patent/CN205225669U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204363A (en) * | 2016-12-20 | 2018-06-26 | Mgi库贴公司 | Board-like gear pump and hydraulic stator pin |
| CN109973384A (en) * | 2017-12-28 | 2019-07-05 | 比亚迪股份有限公司 | Oil pump component and electric oil pump assembly and vehicle with it |
| CN109973384B (en) * | 2017-12-28 | 2021-06-18 | 比亚迪股份有限公司 | Oil pump assembly and electric oil pump assembly and vehicle with same |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |