Gear pump easy to maintain

Abstract

The utility model discloses an easy-to-maintain gear pump which comprises a base, the upper end of the base is fixedly connected with a first fixing plate through a first bolt, the upper end of the first fixing plate is fixedly connected with a pump shell sleeve through a first fixing rod, and the side end of the pump shell sleeve is fixedly connected with a first mounting ring; a lower gear cylinder and an upper gear cylinder are connected into the pump shell sleeve in a sleeved mode, a liquid inlet pipe and a liquid outlet pipe are fixedly connected to the left end and the right end of the pump shell sleeve respectively, the liquid inlet pipe and the liquid outlet pipe penetrate into the pump shell sleeve, and the liquid inlet pipe and the liquid outlet pipe are connected with the lower gear cylinder and the upper gear cylinder in a sleeved mode. An assembly structure of the gear pump is composed of the fixing plate, the fixing rod, the pump shell sleeve, the lower gear cylinder, the upper gear cylinder, the motor, the mounting ring, the bolt and the nut, rapid disassembly and assembly can be carried out, and overhaul and maintenance are facilitated; a clamping mechanism is composed of the pump shell sleeve, the upper protruding block, the lower protruding block, the upper gear cylinder, the lower gear cylinder, the upper groove, the lower groove, the clamping plate and the clamping groove, internal assemblies can be prevented from loosening and dislocating, and the stability of the internal structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear pumps, in particular to an easy-to-maintain gear pump. Background Art

[0002] The existing easy-to-maintain gear pump has a complex installation structure and is difficult to disassemble and assemble, which is not conducive to the inspection and maintenance of the gear pump when it fails; the internal components are prone to loosening and dislocation after long-term operation, which is not conducive to the stable operation of the gear pump. A Chinese patent application, filed under the application number CN202121710788.7, discloses a gear pump comprising a pump body, divided into a first pump body and a second pump body, with a main oil inlet and a main oil outlet provided on opposite sides of the first pump body. The first and second pump bodies are connected via a return oil inlet and a return oil outlet, with the return oil inlet connected to the main oil outlet and the return oil outlet connected to the main oil inlet. A driving gear is disposed within the first pump body; a driven gear is disposed within the first pump body and meshes with the driving gear; and a relief valve is inserted into the return oil passage. The minimum gap between the relief valve surface and the inner wall of the return oil passage can be adjusted by adjusting the extent of the relief valve's insertion into the return oil passage, thereby regulating the oil pressure output by the gear pump. This arrangement eliminates the need for connecting other pressure-regulating devices to external piping, and allows the pressure-regulating structure and gear pump to be integrated into the production. However, the gear pump's difficulty in assembly and disassembly can make repair and maintenance difficult, and loosening and dislocation of internal components can reduce the gear pump's operational stability. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide an easy-to-maintain gear pump. The assembly structure of the gear pump is composed of a fixing plate, a fixing rod, a pump casing, a lower gear cylinder, an upper gear cylinder, a motor, a mounting ring, bolts and nuts, which can be quickly disassembled and assembled, which is beneficial to the inspection and maintenance of the gear pump. The clamping mechanism is composed of a pump casing, an upper protrusion, a lower protrusion, an upper gear cylinder, a lower gear cylinder, an upper groove, a lower groove, a clamping plate and a clamping groove, which can prevent the internal components from loosening and dislocating, thereby improving the stability of the internal structure of the gear pump.

[0004] The utility model also provides the above-mentioned easy-to-maintain gear pump, comprising: a base, the upper end of the base is fixedly connected to a first fixing plate by a first bolt, the upper end of the first fixing plate is fixedly connected to a pump housing by a first fixing rod, the side end of the pump housing is fixedly connected to a first mounting ring, the interior of the pump housing is sleeved with a lower gear cylinder and an upper gear cylinder, the left and right ends of the pump housing are respectively fixedly connected to a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe pass through the interior of the pump housing, and the liquid inlet pipe and the liquid outlet pipe are both sleeved with the lower gear cylinder and the upper gear cylinder; a second fixing plate, the lower end of the second fixing plate is fixedly connected to the upper end of the base by a second bolt, the upper end of the second fixing plate is fixedly connected to a motor by a second fixing rod, the side end of the motor is fixedly connected to a second mounting ring, the second mounting ring is fixedly connected to the first mounting ring by a third bolt and a nut, the output end of the motor is fixedly connected to a gear body by a drive shaft, the gear body is sleeved with the lower gear cylinder and the upper gear cylinder, and the end of the gear body away from the motor is sleeved with the lower gear cylinder and the upper gear cylinder by a fixed shaft.

[0005] According to the easy-to-maintain gear pump described in the utility model, the lower end of the base is fixedly connected to rollers, and the rollers are located at the four corners of the lower end of the base, which facilitates movement and improves convenience of use.

[0006] According to the easy-to-maintain gear pump described in the utility model, the side end of the base is fixedly connected to the mounting plate by a fourth bolt, which facilitates the fixing of the handle. The front end of the mounting plate is fixedly connected to the handle, which is easy to move and improves the convenience of use.

[0007] According to the easily maintainable gear pump of the present invention, an upper protrusion and a lower protrusion are fixedly connected to the rear inner wall of the pump housing, thereby improving the stability of the internal structure.

[0008] According to the easily maintainable gear pump of the present invention, a lower groove is provided at one end of the lower gear cylinder near the rear inner wall of the pump casing, which engages with a lower protrusion, and an upper groove is provided at one end of the upper gear cylinder near the rear inner wall of the pump casing, which engages with an upper protrusion. This facilitates stable installation of the lower and upper gear cylinders.

[0009] According to the easy-to-maintain gear pump of the present invention, the upper end of the lower gear cylinder is provided with a clamping groove, and the clamping grooves are symmetrically distributed at the left and right ends of the lower gear cylinder, which is conducive to the stable installation of the lower gear cylinder and the upper gear cylinder.

[0010] According to the easy-to-maintain gear pump of the present invention, a clamping plate is provided at the lower end of the upper gear cylinder. The clamping plates are symmetrically distributed at the left and right ends of the upper gear cylinder and engage with the clamping grooves, which facilitates the stable installation of the lower gear cylinder and the upper gear cylinder.

[0011] According to the easy-to-maintain gear pump of the present invention, the drive shaft is sleeved with a shaft sleeve, and the shaft sleeve is sleeved with the lower gear cylinder and the upper gear cylinder, which is beneficial to the protection of the drive shaft. Beneficial effects

[0012] 1. Compared with the existing technology, this easy-to-maintain gear pump has an assembly structure composed of a fixing plate, a fixing rod, a pump casing, a lower gear cylinder, an upper gear cylinder, a motor, a mounting ring, bolts and nuts, which can be quickly disassembled and assembled, facilitating the inspection and maintenance of the gear pump.

[0013] 2. Compared with the existing technology, this easy-to-maintain gear pump has a clamping mechanism composed of a pump casing, an upper protrusion, a lower protrusion, an upper gear cylinder, a lower gear cylinder, an upper groove, a lower groove, a clamping plate and a clamping groove, which can prevent internal components from loosening and dislocating, and improve the stability of the internal structure of the gear pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a schematic diagram of the internal structure of an easy-to-maintain gear pump of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of an easy-to-maintain gear pump of the utility model;

[0017] Figure 3 This is a schematic diagram of the longitudinal cross-sectional structure of an easy-to-maintain gear pump of the utility model;

[0018] Figure 4 This is a schematic diagram of the transverse cross-sectional structure of an easy-to-maintain gear pump of the present utility model.

[0019] Legend:

[0020] 1. Base; 2. Lower groove; 3. Lower gear cylinder; 4. Fixed shaft; 5. Clamping groove; 6. Gear body; 7. Clamping plate; 8. Upper groove; 9. Upper gear cylinder; 10. Motor; 11. Second mounting ring; 12. Third bolt; 13. Nut; 14. Roller; 15. Handle; 16. Mounting plate; 17. Fourth bolt; 18. Pump casing; 19. First mounting ring; 20. Liquid inlet pipe; 21. Liquid outlet pipe; 22. Second fixing plate; 23. Second bolt; 24. First fixing plate; 25. First bolt; 26. First fixing rod; 27. Drive shaft; 28. Bushing; 29. ​​Second fixing rod; 30. Upper bump; 31. Lower bump. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0022] Reference Figure 1-4 , The utility model embodiment is an easy-to-maintain gear pump, which includes: a base 1, the lower end of the base 1 is fixedly connected to a roller 14, which moves the gear pump, and the roller 14 is located at the four corners of the lower end of the base 1. The side end of the base 1 is fixedly connected to the mounting plate 16 by a fourth bolt 17, which fixes the handle 15. The front end of the mounting plate 16 is fixedly connected to the handle 15, and the gear pump is moved. The upper end of the base 1 is fixedly connected to the first fixing plate 24 by a first bolt 25, which fixes the pump casing 18. The upper end of the first fixing plate 24 is fixedly connected to the pump casing 18 by a first fixing rod 26, and the lower gear cylinder 3 and the lower gear cylinder 9 are installed. The side end of the pump casing 18 is fixedly connected to the first mounting ring 19, which is docked and fixed with the second mounting ring 11. The rear inner wall of the pump casing 18 is fixedly connected to the upper protrusion 30 and the lower protrusion 31, which clamp the upper gear cylinder 9 and the lower gear cylinder 3. The internal sleeve of the pump casing 18 There are a lower gear cylinder 3 and an upper gear cylinder 9, a gear body 6 is installed, a lower groove 2 is provided at one end of the rear inner wall of the lower gear cylinder 3 close to the pump casing 18, the lower gear cylinder 3 is clamped, the lower groove 2 is clamped with the lower protrusion 31, an upper groove 8 is provided at one end of the rear inner wall of the upper gear cylinder 9 close to the pump casing 18, the upper gear cylinder 9 is clamped, the upper groove 8 is clamped with the upper protrusion 30, the upper end of the lower gear cylinder 3 is provided with a slot 5, the upper gear cylinder 9 is clamped, the slots 5 are symmetrically distributed on the lower At the left and right ends of the gear cylinder 3 and the lower end of the upper gear cylinder 9, there are provided clamping plates 7 to clamp the lower gear cylinder 3. The clamping plates 7 are symmetrically distributed at the left and right ends of the upper gear cylinder 9. The clamping plates 7 are clamped with the clamping grooves 5. The left and right ends of the pump casing 18 are respectively fixedly connected with the liquid inlet pipe 20 and the liquid outlet pipe 21 for liquid inlet and liquid outlet. The liquid inlet pipe 20 and the liquid outlet pipe 21 pass through the interior of the pump casing 18. The liquid inlet pipe 20 and the liquid outlet pipe 21 are both sleeved with the lower gear cylinder 3 and the upper gear cylinder 9;

[0023] The second fixed plate 22, the lower end of the second fixed plate 22 is fixedly connected to the upper end of the base 1 by a second bolt 23, the upper end of the second fixed plate 22 is fixedly connected to the motor 10 by a second fixing rod 29, providing power for the rotation of the gear body 6, and driving the gear body 6 to rotate through the drive shaft 27, the side end of the motor 10 is fixedly connected to the second mounting ring 11, and docked and fixed with the first mounting ring 19, the second mounting ring 11 is fixedly connected to the first mounting ring 19 by a third bolt 12 and a nut 13, the output end of the motor 10 is fixedly connected to the gear body 6 through the drive shaft 27, and rotates to keep the gear pump in operation, the gear body 6 is sleeved with the lower gear cylinder 3 and the upper gear cylinder 9, and the end of the gear body 6 away from the motor 10 is sleeved with the lower gear cylinder 3 and the upper gear cylinder 9 through the fixed shaft 4, the drive shaft 27 is sleeved with a shaft sleeve 28, and the shaft sleeve 28 is sleeved with the lower gear cylinder 3 and the upper gear cylinder 9.

[0024] Working principle: Use an easy-to-maintain gear pump to transport liquid. Start the motor 10, and the motor 10 will drive the internal gear body 6 to rotate at high speed through the drive shaft 27. The liquid enters the gear pump from the liquid inlet pipe 20. When the gear body 6 rotates, the negative pressure causes the liquid to enter the pump chamber. As the gear body 6 rotates at high speed, the liquid flows along the outer contour of the gear body 6. The rotation of the gear body 6 pushes the liquid to flow toward the liquid outlet pipe 21. The liquid flows in the pump chamber to reach the liquid outlet pipe 21, and then flows out through the liquid outlet pipe 21.

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An easy-to-maintain gear pump, characterized in that: include: A base (1), wherein the upper end of the base (1) is fixedly connected to a first fixing plate (24) via a first bolt (25), the upper end of the first fixing plate (24) is fixedly connected to a pump casing (18) via a first fixing rod (26), the side end of the pump casing (18) is fixedly connected to a first mounting ring (19), the interior of the pump casing (18) is sleeved with a lower gear cylinder (3) and an upper gear cylinder (9), the left and right ends of the pump casing (18) are respectively fixedly connected with a liquid inlet pipe (20) and a liquid outlet pipe (21), the liquid inlet pipe (20) and the liquid outlet pipe (21) pass through the interior of the pump casing (18), and the liquid inlet pipe (20) and the liquid outlet pipe (21) are both sleeved with the lower gear cylinder (3) and the upper gear cylinder (9); A second fixing plate (22), the lower end of the second fixing plate (22) is fixedly connected to the upper end of the base (1) via a second bolt (23), the upper end of the second fixing plate (22) is fixedly connected to the motor (10) via a second fixing rod (29), the side end of the motor (10) is fixedly connected to the second mounting ring (11), the second mounting ring (11) is fixedly connected to the first mounting ring (19) via a third bolt (12) and a nut (13), the output end of the motor (10) is fixedly connected to the gear body (6) via a drive shaft (27), the gear body (6) is sleeved with the lower gear cylinder (3) and the upper gear cylinder (9), and the end of the gear body (6) away from the motor (10) is sleeved with the lower gear cylinder (3) and the upper gear cylinder (9) via a fixed shaft (4).

2. The easily maintainable gear pump according to claim 1, characterized in that: The lower end of the base (1) is fixedly connected to a roller (14), and the roller (14) is located at the four corners of the lower end of the base (1).

3. The easily maintainable gear pump according to claim 1, characterized in that: The side end of the base (1) is fixedly connected to a mounting plate (16) via a fourth bolt (17), and the front end of the mounting plate (16) is fixedly connected to a handle (15).

4. The easily maintainable gear pump according to claim 1, characterized in that: An upper protrusion (30) and a lower protrusion (31) are fixedly connected to the rear inner wall of the pump casing (18).

5. The easily maintainable gear pump according to claim 1, characterized in that: A lower groove (2) is provided at one end of the lower gear cylinder (3) close to the rear inner wall of the pump casing (18), and the lower groove (2) is engaged with the lower protrusion (31). An upper groove (8) is provided at one end of the upper gear cylinder (9) close to the rear inner wall of the pump casing (18), and the upper groove (8) is engaged with the upper protrusion (30).

6. The easily maintainable gear pump according to claim 1, characterized in that: A clamping slot (5) is provided at the upper end of the lower gear cylinder (3), and the clamping slots (5) are symmetrically distributed at the left and right ends of the lower gear cylinder (3).

7. The easily maintainable gear pump according to claim 1, characterized in that: A clamping plate (7) is provided at the lower end of the upper gear cylinder (9), and the clamping plates (7) are symmetrically distributed at the left and right ends of the upper gear cylinder (9), and the clamping plates (7) are clamped with the clamping slot (5).

8. The easily maintainable gear pump according to claim 1, characterized in that: The drive shaft (27) is sleeved with a shaft sleeve (28), and the shaft sleeve (28) is sleeved with the lower gear cylinder (3) and the upper gear cylinder (9).

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