High pressure resistant micro gear pump

Abstract

The utility model discloses a high pressure -resistant miniature gear pump, it includes: front pump cover, the inside of front pump cover is provided with ventilation round groove and front pump cover groove, the inner surface screw thread connection of front pump cover has fixed bolt, the side surface screw thread connection of fixed bolt has rear pump cover, the inside of rear pump cover is provided with heat dissipation groove, the inner surface welding of heat dissipation groove has the fin no.

Description

Technical Field

[0001] This utility model relates to the industrial field, and in particular to a high-pressure resistant micro gear pump. Background Technology

[0002] High-pressure resistant micro gear pumps can achieve precise metering and delivery of small-flow, high-pressure liquids in industry, such as chemical reagent addition and cooling circulation; in laboratories, they can be used for precise flow control of liquid delivery and sampling; in the medical field, they can accurately fill drugs and deliver cleaning fluids; and they can also be used in small hydraulic or fluid systems in the automotive, aerospace and other fields to meet the high-pressure fluid transmission needs of multiple scenarios.

[0003] Existing high-pressure resistant micro gear pumps consist of a front cover, a rear cover, a rotor, and a magnetic cover. The front cover is fixedly connected to the rear cover by a positioning pin, and a drive gear and a driven gear are arranged between the front and rear covers. However, the anti-vibration and heat dissipation of the device are not considered. For example, Chinese patent disclosure "A Micro Gear Pump" with application number "CN201721029876.4" consists of a front cover, a rear cover, a rotor, and a magnetic cover. The front cover is fixedly connected to the rear cover by a positioning pin, and a drive gear and a driven gear are arranged between the front and rear covers. However, the anti-vibration and heat dissipation of the device are not considered, which seriously affects the user experience. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a high-pressure resistant micro gear pump. This aims to improve the technical problem that existing high-pressure resistant micro gear pumps do not consider the anti-vibration and heat dissipation of the device during use, which seriously affects the user experience.

[0005] This utility model also provides a high-pressure resistant micro gear pump, comprising: a front pump cover, wherein the interior of the front pump cover is provided with a ventilation groove and a front pump cover groove, a fixing bolt is threadedly connected to the inner surface of the front pump cover, a rear pump cover is threadedly connected to the side surface of the fixing bolt, a heat dissipation groove is provided inside the rear pump cover, a heat dissipation fin one is welded to the inner surface of the heat dissipation groove, a heat dissipation fin two is welded to the lower surface of the heat dissipation groove, and a middle section groove is provided inside the heat dissipation fin two.

[0006] According to the high-pressure resistant micro gear pump provided by this utility model, an output shaft runs through the interior of the middle section groove, and a rotor core is fixedly connected to the side surface of the output shaft.

[0007] According to the high-pressure resistant micro gear pump provided in this utility model, the output shaft has a rotor core and a master-slave gear assembly fixedly connected to its side surface.

[0008] According to the high-pressure resistant micro gear pump provided in this utility model, the side surface of the output shaft is rotatably connected to a bearing, oil seal two, oil seal three and a sealing assembly.

[0009] According to the high-pressure resistant micro gear pump provided by this utility model, the side surface of the fixing bolt is threaded to the pump body, the pump body is provided with a suction chamber, and the suction chamber is provided with a suction pipe and a discharge pipe respectively.

[0010] According to the high-pressure resistant micro gear pump provided by this utility model, a middle bearing is rotatably connected to the side surface of the output shaft, and a middle section groove is fixedly connected to the side surface of the middle bearing.

[0011] According to the high-pressure resistant micro gear pump provided by this utility model, a magnet is fixedly connected to the side surface of the output shaft, and a stator core is rotatably connected to the side surface of the magnet. The stator core is internally permeated with winding insulation.

[0012] According to the high-pressure resistant micro gear pump provided by this utility model, the outer surface of the rear pump cover is fixedly connected with a terminal, the interior of the rear pump cover is provided with a rear pump cover groove, and the inner surface of the rear pump cover groove is fixedly connected with a capacitor.

[0013] Beneficial effects Compared with existing technologies, this high-pressure resistant micro gear pump rapidly dissipates the heat generated during operation through a heat dissipation trough, heat sink one, heat sink two, and ventilation groove, preventing equipment vibration caused by eccentric operation due to component deformation caused by high temperature. When the equipment is running, the magnet can effectively prevent component deformation caused by high temperature and prevent vibration caused by eccentric operation. Ultimately, the device achieves efficient heat dissipation and effectively prevents the thermal expansion and contraction of components, thus effectively preventing device vibration. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a cross-sectional view of the practical high-pressure resistant micro gear pump; Figure 2 This is a perspective view of the practical high-pressure resistant miniature gear pump; Figure 3 This is a front view of the practical high-pressure resistant miniature gear pump; Figure 4 This is a top view of the practical high-pressure resistant micro gear pump; Figure 5 This is a bottom view of the practical high-pressure resistant micro gear pump.

[0015] Legend: 1. Rear pump cover; 2. Heat dissipation groove; 3. Heat dissipation fin one; 4. Heat dissipation fin two; 5. Front pump cover; 6. Ventilation groove; 7. Fixing bolts; 8. Pump body; 9. Master-slave gear assembly; 10. Terminal; 11. Suction chamber; 12. Bearing; 13. Oil seal two; 14. Rotor core one; 15. Magnet; 16. Rotor core two; 17. Stator core; 18. Winding insulation; 19. Intermediate bearing; 20. Capacitor; 21. Front pump cover groove; 22. Rear pump cover groove; 23. Intermediate section groove; 24. Oil seal three; 25. Suction pipe; 26. Discharge pipe; 27. Output shaft; 28. Sealing assembly. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of this utility model. Preferred embodiments of this utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of this utility model, but they should not be construed as limiting the scope of protection of this utility model.

[0017] Reference Figure 1 , Figure 2 , Figure 3 and Figure 5 This utility model discloses a high-pressure resistant micro gear pump, comprising: a front pump cover 5, the interior of which is provided with a ventilation groove 6 and a front pump cover groove 21; a fixing bolt 7 is threadedly connected to the inner surface of the front pump cover 5; a rear pump cover 1 is threadedly connected to the side surface of the fixing bolt 7; a heat dissipation groove 2 is provided inside the rear pump cover 1; a heat dissipation fin 3 is welded to the inner surface of the heat dissipation groove 2; a heat dissipation fin 4 is welded to the lower surface of the heat dissipation groove 2; a middle section groove 23 is provided inside the heat dissipation fin 4; an output shaft 27 passes through the middle section groove 23; a rotor core 14 is fixedly connected to the side surface of the output shaft 27; a rotor core 16 and a master-slave gear assembly 9 are fixedly connected to the side surface of the output shaft 27; a bearing 12, an oil seal 13, an oil seal 24 and a sealing assembly 28 are rotatably connected to the side surface of the output shaft 27; a pump body 8 is threadedly connected to the side surface of the fixing bolt 7; a suction chamber 11 is provided inside the pump body 8; a suction pipe 25 and a discharge pipe 26 pass through the suction chamber 11 respectively. Specifically, during the operation of the device, the heat dissipation groove 2, heat dissipation fin 1 3, heat dissipation fin 2 4 and ventilation groove 6 quickly dissipate the heat generated during the operation of the equipment, and prevent the equipment vibration caused by the eccentric operation due to the deformation of the components caused by high temperature.

[0018] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4A middle bearing 19 is rotatably connected to the side surface of the output shaft 27, and a middle section groove 23 is fixedly connected to the side surface of the middle bearing 19; a magnet 15 is fixedly connected to the side surface of the output shaft 27, and a stator core 17 is rotatably connected to the side surface of the magnet 15, with a winding insulation 18 penetrating inside the stator core 17; a terminal 10 is fixedly connected to the outer surface of the rear pump cover 1, and a rear pump cover groove 22 is provided inside the rear pump cover 1, with a capacitor 20 fixedly connected to the inner surface of the rear pump cover groove 22; Specifically, when the equipment is running, the magnet 15 can effectively prevent the deformation of the components caused by high temperature and prevent the vibration caused by the eccentric operation of the equipment. At the same time, the bearing 12, oil seal 13, oil seal 24 and sealing assembly 28 can effectively ensure the efficient operation and sealing of the device. Ultimately, the device achieves efficient heat dissipation and effectively prevents the thermal expansion and contraction of the components, and effectively prevents the vibration of the device.

[0019] Working principle: During the operation of the device, the heat dissipation groove 2, heat dissipation fin 1 3, heat dissipation fin 2 4 and ventilation groove 6 quickly dissipate the heat generated during the operation of the equipment, avoiding equipment vibration caused by eccentric operation due to component deformation caused by high temperature; when the equipment is running, the magnet 15 can effectively prevent the component deformation caused by high temperature and prevent the vibration caused by eccentric operation of the equipment. At the same time, the bearing 12, oil seal 2 13, oil seal 3 24 and sealing assembly 28 can effectively ensure the efficient operation and sealing of the device; ultimately, the device achieves efficient heat dissipation and effectively prevents the thermal expansion and contraction of components, effectively preventing the vibration of the device.

[0020] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings. However, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model.

Claims

1. A high-pressure resistant micro gear pump, characterized in that, include: The front pump cover (5) has a ventilation groove (6) and a front pump cover groove (21) inside. The inner surface of the front pump cover (5) is threaded with a fixing bolt (7). The side surface of the fixing bolt (7) is threaded with a rear pump cover (1). The rear pump cover (1) has a heat dissipation groove (2) inside. The inner surface of the heat dissipation groove (2) is welded with a heat dissipation fin one (3). The lower surface of the heat dissipation groove (2) is welded with a heat dissipation fin two (4). The interior of the heat dissipation fin two (4) has a middle section groove (23).

2. The high-pressure resistant micro gear pump according to claim 1, characterized in that, An output shaft (27) runs through the interior of the middle section groove (23), and a rotor core (14) is fixedly connected to the side surface of the output shaft (27).

3. The high-pressure resistant micro gear pump according to claim 2, characterized in that, The output shaft (27) has a rotor core (16) and a master-slave gear assembly (9) fixedly connected to its side surface.

4. The high-pressure resistant micro gear pump according to claim 3, characterized in that, The output shaft (27) is rotatably connected to a bearing (12), an oil seal two (13), an oil seal three (24), and a sealing assembly (28).

5. The high-pressure resistant micro gear pump according to claim 1, characterized in that, The side surface of the fixing bolt (7) is threaded with a pump body (8), and the pump body (8) is provided with a suction chamber (11). The suction chamber (11) is provided with a suction pipe (25) and a discharge pipe (26) respectively.

6. The high-pressure resistant micro gear pump according to claim 4, characterized in that, The output shaft (27) is rotatably connected to a middle bearing (19), and the middle bearing (19) is fixedly connected to a middle section groove (23) on its side surface.

7. The high-pressure resistant micro gear pump according to claim 4, characterized in that, A magnet (15) is fixedly connected to the side surface of the output shaft (27), and a stator core (17) is rotatably connected to the side surface of the magnet (15). A winding insulation (18) passes through the interior of the stator core (17).

8. The high-pressure resistant micro gear pump according to claim 1, characterized in that, The outer surface of the rear pump cover (1) is fixedly connected to a terminal (10), and the interior of the rear pump cover (1) is provided with a rear pump cover groove (22), and the inner surface of the rear pump cover groove (22) is fixedly connected to a capacitor (20).

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