CN209908753U - Metering gear pump suitable for coating is carried - Google Patents
Metering gear pump suitable for coating is carried Download PDFInfo
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- CN209908753U CN209908753U CN201920691141.0U CN201920691141U CN209908753U CN 209908753 U CN209908753 U CN 209908753U CN 201920691141 U CN201920691141 U CN 201920691141U CN 209908753 U CN209908753 U CN 209908753U
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Abstract
The application provides a metering gear pump suitable for paint conveying, which comprises a pump body, and a top plate and a bottom plate which are arranged on two sides of the pump body; the pump body comprises a middle plate, and a driving gear and a driven gear which are positioned in the middle plate; the driving gear is meshed with the driven gear; a driving shaft is arranged at the center of the driving gear, penetrates through the top plate from the inside of the pump body and extends to the outside of the pump body; a driven shaft is arranged at the center of the driven gear; the surfaces of the metering gear pump which are in contact with each other and have relative motion are coated with a diamond-like coating. The beneficial effect of this application: the diamond-like coating is coated on the surfaces of the parts of the metering gear pump which are in contact with each other and have relative motion, so that the surface hardness of the parts is improved, the friction coefficient of the surfaces of the parts is reduced, the abrasion among the parts is reduced, the corrosion resistance of the parts is improved, and the service life of the metering gear pump is prolonged.
Description
Technical Field
The application relates to the technical field of gear pumps, in particular to a metering gear pump suitable for conveying coatings.
Background
Gear pumps are rotary pumps that deliver or pressurize fluid by virtue of the change in working volume and movement created between a pump cylinder and a meshing gear. The metering gear pump for paint delivery provides stable and consistent paint flow regulation for an automatic spray system. In order to ensure the stability of the automatic spraying system, the gear pump is required to work stably, the flow precision is good, the transmission efficiency is high, and the service life is long. And sliding friction is adopted between the internal rotating parts and the static parts of the traditional gear pump, lubrication-free meshing is adopted between the gears, the parts of the gear pump are extremely easy to wear, and the parts cannot be repaired after being worn, so that the service life of the gear pump is short. Therefore, how to increase the service life of the gear pump is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
It is an object of the present application to address the above problems and it is desirable to provide a metering gear pump suitable for paint delivery.
The application provides a metering gear pump suitable for paint conveying, which comprises a pump body, and a top plate and a bottom plate which are arranged on two sides of the pump body; the pump body comprises a middle plate, and a driving gear and a driven gear which are positioned in the middle plate; the driving gear is meshed with the driven gear; a driving shaft is arranged at the center of the driving gear, penetrates through the top plate from the inside of the pump body and extends to the outside of the pump body; a driven shaft is arranged at the center of the driven gear; the surfaces of the metering gear pump which are in contact with each other and have relative motion are coated with a diamond-like coating. By adopting the technical scheme, the surface hardness of each part is improved, the friction coefficient of the surface of each part is reduced, and the abrasion among the parts is reduced, so that the service life of the metering gear pump is prolonged.
According to the technical scheme provided by certain embodiments of the application, the thickness of the diamond-like coating is 0.002 mm-0.005 mm.
According to the technical scheme provided by certain embodiments of the application, the surface hardness of the diamond-like coating is more than or equal to HV (Vickers hardness) 2500.
According to the technical scheme provided by certain embodiments of the application, the diamond-like carbon coating is coated on the surfaces of corresponding parts of the metering gear pump by a low-temperature coating method. By adopting the technical scheme, the hardness of the diamond-like coating is ensured, and the matrix hardness of each part of the metering gear pump is not lost, so that the phenomena of collapse, coating peeling and the like of each part of the metering gear pump are avoided.
According to the technical scheme provided by certain embodiments of the application, each part of the metering gear pump adopts 9Cr18MoV as a base material. By adopting the technical scheme, the strength of the matrix of each part of the metering gear pump is ensured.
According to the technical scheme provided by certain embodiments of the application, the heat treatment hardness of the material 9Cr18MoV is HRC (Rockwell hardness) 56-HRC 60.
The beneficial effect of this application: the diamond-like coating is coated on the surfaces of the parts of the metering gear pump which are in contact with each other and have relative motion, so that the surface hardness of the parts is improved, the friction coefficient of the surfaces of the parts is reduced, the abrasion among the parts is reduced, the corrosion resistance of the parts is improved, and the service life of the metering gear pump is prolonged.
Drawings
FIG. 1 is a schematic cross-sectional structural view of a metering gear pump suitable for paint delivery provided by an embodiment of the present application;
fig. 2 is an exploded view of a metering gear pump suitable for paint delivery according to an embodiment of the present application.
The text labels in the figures are represented as:
1. a top plate; 2. a base plate; 3. a driving gear; 4. a driven gear; 5. a driven shaft; 6. a drive shaft; 7. a middle plate.
Detailed Description
The following detailed description of the present application is given for the purpose of enabling those skilled in the art to better understand the technical solutions of the present application, and the description in this section is only exemplary and explanatory, and should not be taken as limiting the scope of the present application in any way.
As shown in fig. 1 and fig. 2, the metering gear pump suitable for paint delivery provided by the present embodiment includes a pump body, and a top plate 1 and a bottom plate 2 disposed on two sides of the pump body; the pump body comprises a middle plate 7, a driving gear 3 and a driven gear 4 which are positioned in the middle plate; the driving gear 3 is meshed with the driven gear 4; a driving shaft 6 is arranged at the center of the driving gear 3, and the driving shaft 6 penetrates through the top plate 1 from the inside of the pump body and extends to the outside of the pump body; a driven shaft 5 is arranged at the center of the driven gear 4; the surfaces of the metering gear pump which are in contact with each other and have relative motion are coated with diamond-like carbon, and the specific coating positions are shown by chain lines in figure 2. It should be noted that the parts of the metering gear pump proposed in the present application include: top plate 1, bottom plate 2, driving gear 3, driven gear 4, driven shaft 5, driving shaft 6 and medium plate 7.
In a preferred embodiment, the diamond-like coating has a thickness of between 0.002mm and 0.005 mm.
In a preferred embodiment, the surface hardness of the diamond-like coating is HV2500 or greater.
In a preferred embodiment, the diamond-like coating is coated on the surfaces of the corresponding parts of the metering gear pump by a low-temperature coating method.
In a preferred embodiment, the material 9Cr18MoV is used as the base material for all parts of the metering gear pump.
In a preferred embodiment, the material 9Cr18MoV has a heat treatment hardness value of between HRC56 and HRC 60.
According to the metering gear pump suitable for paint conveying, the diamond-like coating is coated on the surfaces, which are in contact with each other and move relatively, of the parts of the metering gear pump by adopting a low-temperature coating method, so that the surface hardness of the parts is improved, the friction coefficient of the surfaces of the parts is reduced, and the wear resistance of the metering gear pump is improved; the surface energy of the diamond-like coating is low, so that the diamond-like coating is not easy to adsorb on the surface of a part when media such as paint are conveyed, and the pollution to the part is reduced; the diamond-like coating has stronger corrosion resistance, and avoids the corrosion of paint and the like to the gear base material. The material 9Cr18MoV is used as the base material of each part, so that the base strength of each part of the metering gear pump is improved, and meanwhile, the material has good grinding processability and can realize high-precision processing of the parts. The matrix strength of parts, the surface strength, the surface wear resistance, the surface pollution resistance, the corrosion resistance and the like of parts which are in contact with each other and move relatively are main factors influencing the service life of the metering gear pump. Therefore, the metering gear pump suitable for paint delivery provided by the embodiment of the application has a longer service life.
The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention in other instances, which may or may not be practiced, are intended to be within the scope of the present application.
Claims (6)
1. A metering gear pump suitable for paint conveying is characterized by comprising a pump body, a top plate (1) and a bottom plate (2) which are arranged on two sides of the pump body; the pump body comprises a middle plate (7), and a driving gear (3) and a driven gear (4) which are positioned in the middle plate (7); the driving gear (3) is meshed with the driven gear (4); a driving shaft (6) is arranged at the center of the driving gear (3), and the driving shaft (6) penetrates through the top plate (1) from the inside of the pump body and extends to the outside of the pump body; a driven shaft (5) is arranged at the center of the driven gear (4); the surfaces of all parts of the metering gear pump which are in contact with each other and have relative motion are coated with diamond-like carbon coatings.
2. The metered gear pump suitable for paint delivery of claim 1 wherein said diamond-like coating has a thickness of 0.002mm to 0.005 mm.
3. The metered gear pump suitable for paint delivery of claim 1 wherein said diamond-like coating has a surface hardness of HV2500 or greater.
4. The metered gear pump adapted for paint delivery of claim 1 wherein said diamond-like coating is applied to said metered gear pump respective part surfaces by a low temperature coating process.
5. The metering gear pump for paint delivery as set forth in claim 1, wherein each component of the metering gear pump is made of 9Cr18MoV as a base material.
6. The metered gear pump adapted for paint delivery of claim 5 wherein said material 9Cr18MoV has a heat treated hardness between HRC56 and HRC 60.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920691141.0U CN209908753U (en) | 2019-05-15 | 2019-05-15 | Metering gear pump suitable for coating is carried |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920691141.0U CN209908753U (en) | 2019-05-15 | 2019-05-15 | Metering gear pump suitable for coating is carried |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209908753U true CN209908753U (en) | 2020-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920691141.0U Active CN209908753U (en) | 2019-05-15 | 2019-05-15 | Metering gear pump suitable for coating is carried |
Country Status (1)
| Country | Link |
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| CN (1) | CN209908753U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973377A (en) * | 2019-05-15 | 2019-07-05 | 天津铭捷智能装备有限公司 | A kind of measurement gear pump suitable for coating conveying |
| CN115111155A (en) * | 2022-08-30 | 2022-09-27 | 成都东日瑞姆机械有限公司 | A gear pump for new forms of energy battery module injecting glue |
-
2019
- 2019-05-15 CN CN201920691141.0U patent/CN209908753U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973377A (en) * | 2019-05-15 | 2019-07-05 | 天津铭捷智能装备有限公司 | A kind of measurement gear pump suitable for coating conveying |
| CN115111155A (en) * | 2022-08-30 | 2022-09-27 | 成都东日瑞姆机械有限公司 | A gear pump for new forms of energy battery module injecting glue |
| CN115111155B (en) * | 2022-08-30 | 2022-11-11 | 成都东日瑞姆机械有限公司 | A gear pump for new forms of energy battery module injecting glue |
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