Vacuum molecular pump motor

Abstract

The utility model discloses a vacuum molecular pump motor, which relates to the technical field of motor equipment, specifically comprises a pump shell and is characterized in that a baffle plate is arranged on the inner wall of the pump shell close to the lower end, a rotor assembly is arranged in the pump shell, and the bottom end of the rotor assembly is positioned right above the baffle plate; a positioning strip is arranged on the inner wall of the pump shell and located below the baffle, and the inner wall of the pump shell is movably connected with a molecular pump motor through the positioning strip and the baffle. By arranging the butt-joint plate, the flexible clamping rod and the clamping groove, when the molecular pump motor is fixed to the butt-joint plate and taken down, the butt-joint plate is rotated to drive the clamping head to be away from the clamping groove through the flexible clamping rod, then the butt-joint plate is moved downwards again to drive the gear motor to be separated from the rotor assembly, and then the molecular pump motor can be taken down easily. And the effect of simply and rapidly taking down the molecular pump motor is achieved, and the problem that an existing vacuum molecular pump motor is not prone to being taken down from the interior of a vacuum molecular pump to be repaired and maintained is solved.

Description

Technical Field

[0001] The utility model relates to a motor device, in particular to a vacuum molecular pump motor. Background Art

[0002] The vacuum molecular pump motor is a motor used to drive the vacuum molecular pump. The vacuum molecular pump is a device used to generate a high vacuum and achieve a vacuum ring by excluding gas molecules. The vacuum molecular pump motor is a motor used to drive the operation of the vacuum molecular pump. The vacuum molecular pump motor provides power and drives the rotor to rotate, so that the gas molecules are extracted inside the vacuum molecular pump, thereby creating a vacuum environment.

[0003] Today's vacuum molecular pump motors are generally built into the interior of the vacuum molecular pump, and then an external power supply is used to provide power to the vacuum molecular pump motor and control the speed of the vacuum molecular pump motor. However, during use, we found that it is very inconvenient to disassemble the vacuum molecular pump motor. When removing it, the top driving blades and stationary blades must be removed before the vacuum molecular pump motor can be removed for inspection, which particularly affects the observation and maintenance of the vacuum molecular pump motor. Utility Model Content

[0004] The utility model aims to solve the problem that the existing vacuum molecular pump motor is difficult to be removed from the inside of the vacuum molecular pump for repair and maintenance.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A vacuum molecular pump motor comprises a pump casing, wherein a baffle is provided on the inner wall of the pump casing near the lower end, a rotor assembly is provided inside the pump casing, the bottom end of the rotor assembly is located directly above the baffle, a positioning bar is provided on the inner wall of the pump casing below the baffle, the inner wall of the pump casing is movably connected with the molecular pump motor through the positioning bar and the baffle, a positioning groove is provided on the side of the molecular pump motor corresponding to the position of the positioning bar, and the molecular pump motor moves inside the pump casing while the positioning bar is clamped inside the positioning groove, a docking block is fixed on the output shaft of the molecular pump motor, a docking groove is provided on the docking block, and the rotor assembly is movably docked with the output shaft of the molecular pump motor through the docking groove; a docking plate is fixed on the bottom of the molecular pump motor, a tough clamping rod is fixed on the side of the docking plate, the other end of the tough clamping rod is fixed with a clamping head on one side of the pump casing, a clamping groove is provided on the side of the pump casing at the clamping head position, the tough clamping rod is clamped inside the clamping groove through the clamping head, and a control power supply is fixed on the bottom of the docking plate.

[0007] Preferably, the positioning bar and the baffle are arranged perpendicular to each other, and the bottom of the positioning bar is arranged as an arc-shaped inclined surface.

[0008] Preferably, the distance between the baffle and the lower end of the pump housing is the same as the height of the molecular pump motor.

[0009] Preferably, a sealing strip that is butted against the pump housing is provided at the outer ring of the butt joint plate.

[0010] Preferably: the docking plate includes an outer rotating ring, an inner positioning plate and a rotating bearing. The inner wall of the outer rotating ring is fixed to the side of the rotating bearing, and the rotating bearing is fixedly sleeved on the inner positioning plate, so that the outer rotating ring is positioned on the inner positioning plate through the rotating bearing. At this time, an inclined groove is provided at the connection position between one side of the inner wall of the slot and the surface of the pump casing.

[0011] Preferably, the tough clamping rod is a metal tough clamping rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] By providing a docking plate, a tough clamping rod and a clamping slot, when the molecular pump motor is fixed to the docking plate, the docking plate is rotated to drive the clamping head away from the clamping slot through the tough clamping rod, and then the docking plate is moved downward again to drive the reduction motor to separate from the rotor assembly, so that the molecular pump motor can be easily removed, thereby achieving the effect of simply and quickly removing the molecular pump motor, and solving the problem that the existing vacuum molecular pump motor is not easy to be removed from the inside of the vacuum molecular pump for repair and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front view structure of a vacuum molecular pump motor.

[0015] Figure 2 It is a schematic diagram of a cross-sectional three-dimensional structure of the position of a molecular pump motor in a vacuum molecular pump motor.

[0016] Figure 3 The schematic diagram of the top-view cross-sectional structure of the docking plate and the tough clamping rod position in a vacuum molecular pump motor.

[0017] Figure 4 A vacuum molecular pump motor Figure 3 Schematic diagram of the structure at A in the middle.

[0018] As shown in the figure: 1. Pump housing; 2. Baffle; 3. Rotor assembly; 4. Positioning strip; 5. Molecular pump motor; 6. Positioning groove; 7. Docking block; 8. Docking groove; 9. Docking plate; 10. Tough clamping rod; 11. Clamp head; 12. Clamping groove; 13. Control power supply; 14. Sealing strip; 15. Outer swivel; 16. Inner positioning plate; 17. Rotating bearing; 18. Bevel groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] See also Figures 1 to 4 In the embodiment of the utility model, a vacuum molecular pump motor comprises a pump housing 1, wherein the inner wall of the pump housing 1 is provided with a baffle 2 near the lower end, and the distance between the baffle 2 and the lower end of the pump housing 1 is the same as the height of the molecular pump motor 5, so that the sealing strip 14 is used to stably clamp the position of the molecular pump reduction motor to prevent its shaking and movement from affecting the normal operation of the molecular pump, and the top of the molecular pump motor 5 is limited, and a rotor assembly 3 is provided inside the pump housing 1, and the rotor assembly 3 is a component for driving the driving blades to rotate, and the bottom end of the rotor assembly 3 is located directly above the baffle 2, and the inner wall of the pump housing 1 is provided with a positioning strip 4 below the baffle 2, which is used to The pump motor 5 is positioned, the positioning bar 4 and the baffle 2 are arranged perpendicular to each other, and the bottom of the positioning bar 4 is arranged as an arc slope, so that it is convenient to dock the molecular pump motor 5. The inner wall of the pump housing 1 is movably connected with the molecular pump motor 5 through the positioning bar 4 and the baffle 2. The side of the molecular pump motor 5 is provided with a positioning groove 6 corresponding to the position of the positioning bar 4. When the molecular pump motor 5 moves inside the pump housing 1, the positioning bar 4 is stuck in the positioning groove 6 to position the molecular pump motor 5 to prevent the molecular pump motor 5 from rotating. A docking block 7 is fixed on the output shaft of the molecular pump motor 5, and a docking groove 8 is opened on the docking block 7. The rotor assembly 3 is movably docked with the output shaft of the molecular pump motor 5 through the docking groove 8.

[0021] A docking plate 9 is fixed at the bottom of the molecular pump motor 5, and the docking plate 9 includes an outer rotating ring 15, an inner positioning plate 16 and a rotating bearing 17. The inner wall of the outer rotating ring 15 is fixed to the side of the rotating bearing 17, and the rotating bearing 17 is fixedly sleeved on the inner positioning plate 16, so that the outer rotating ring 15 is positioned on the inner positioning plate 16 through the rotating bearing 17. At this time, an inclined groove 18 is provided at the connection position between one side of the inner wall of the slot 12 and the surface of the pump housing 1. When the outer rotating ring 15 rotates on the inner positioning plate 16 through the rotating bearing 17, the outer rotating ring 15 drives the tough clamping rod 10 to drive the clamping head 11 to move in the direction of the inclined surface, so that the clamping head 11 is convenient for the separation of the slot 12. Then, the docking plate 9 is moved downward to drive the molecular pump motor 5 to be removed from the inside of the pump housing 1. A sealing strip 14 that docks with the pump housing 1 is provided at the outer ring position of the docking plate 9, and a tough clamping rod is fixed on the side of the docking plate 9. 10. The tough clamping rod 10 is a metal tough clamping rod 10, so that the tough clamping rod 10 has sufficient toughness to bend. The other end of the tough clamping rod 10 is located on one side of the pump housing 1 and a clamping head 11 is fixed thereon. A clamping slot 12 is provided on the side of the pump housing 1 at the position of the clamping head 11. The tough clamping rod 10 is clamped in the inside of the clamping slot 12 through the clamping head 11. A control power supply 13 is fixed to the bottom of the docking plate 9. When removing the molecular pump motor 5, you first need to rotate the outer rotating ring 15, and then the outer rotating ring 15 drives the tough clamping rod 10 to move. The tough clamping rod 10 will drive the clamping head 11 to slowly move out of the clamping slot 12 along the inclined groove 18 on the inner wall of the clamping slot 12, so that the clamping head 11 fits on the surface of the pump housing 1, and then move the docking plate 9 downward to drive the molecular pump motor 5 to move out of the pump housing 1. In this way, the molecular pump motor 5 can be easily removed, which is convenient for repair and maintenance.

Claims

1. A vacuum molecular pump motor, comprising a pump housing (1), characterized in that: The pump housing (1) is provided with a baffle (2) on the inner wall of the pump housing (1) near the lower end, a rotor assembly (3) is provided inside the pump housing (1), the bottom end of the rotor assembly (3) is located directly above the baffle (2), a positioning strip (4) is provided on the inner wall of the pump housing (1) below the baffle (2), a molecular pump motor (5) is movably connected to the inner wall of the pump housing (1) via the positioning strip (4) and the baffle (2), a positioning groove (6) is provided on the side of the molecular pump motor (5) corresponding to the position of the positioning strip (4), the molecular pump motor (5) moves inside the pump housing (1) and the positioning strip (4) is stuck inside the positioning groove (6), and the molecular pump motor (5) is A docking block (7) is fixed on the output shaft, a docking groove (8) is provided on the docking block (7), and the rotor assembly (3) is movably docked with the output shaft of the molecular pump motor (5) through the docking groove (8); a docking plate (9) is fixed on the bottom of the molecular pump motor (5), a tough clamping rod (10) is fixed on the side of the docking plate (9), the other end of the tough clamping rod (10) is located on a side of the pump housing (1) and a clamping head (11) is fixed thereon, a clamping groove (12) is provided on the side of the pump housing (1) at the position of the clamping head (11), the tough clamping rod (10) is clamped in the inside of the clamping groove (12) through the clamping head (11), and a control power supply (13) is fixed on the bottom of the docking plate (9).

2. A vacuum molecular pump motor according to claim 1, characterized in that: The positioning strip (4) and the baffle (2) are arranged perpendicular to each other, and the bottom of the positioning strip (4) is arranged as an arc-shaped inclined surface.

3. A vacuum molecular pump motor according to claim 1, characterized in that: The distance between the baffle (2) and the lower end of the pump housing (1) is the same as the height of the molecular pump motor.

4. A vacuum molecular pump motor according to claim 1, characterized in that: A sealing strip (14) is provided at the outer ring position of the docking plate (9) for docking with the pump housing (1).

5. A vacuum molecular pump motor according to claim 1, characterized in that: The docking plate (9) comprises an outer rotating ring (15), an inner positioning plate (16) and a rotating bearing (17); the inner wall of the outer rotating ring (15) is fixed to the side of the rotating bearing (17); the rotating bearing (17) is fixedly sleeved on the inner positioning plate (16); in this way, the outer rotating ring (15) is positioned on the inner positioning plate (16) through the rotating bearing (17); at this time, an inclined groove (18) is provided at a position where one side of the inner wall of the clamping groove (12) is connected to the surface of the pump housing (1).

6. A vacuum molecular pump motor according to claim 1, characterized in that: The tough clamping rod (10) is a metal tough clamping rod (10).

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