A stable vacuum pump rotor assembly

Abstract

This utility model discloses a stable vacuum pump rotor assembly, including a rotor body and blades. The rotor body has a groove inside, and the middle body of the blade is located inside the groove. Both sides of the rotor body have clearance grooves, and the two ends of the blade pass through the clearance grooves. Two fixing blocks are fixedly connected to the top of the rotor body. Each fixing block has a slot, and a stop block is movably connected in the slot. The stop block has a slot, and a first screw is inserted into the slot. The top of the rotor body has two second threaded grooves, and the first screw is threadedly connected to the corresponding second threaded groove. This utility model can not only achieve a stable connection between the rotor body and the middle body of the blade through the cooperation of the stop block and the first screw, but also further fix the rotor body and the blade through the setting of auxiliary fixing components.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump rotor technology, and in particular to a vacuum pump rotor assembly that is stably installed. Background Technology

[0002] When using a car vacuum pump rotor, the rotor generally needs to be matched with a shaft and installed together; otherwise, it cannot be used.

[0003] As disclosed in the patent CN215486447U, a stable high-strength automotive vacuum pump rotor, the existing technology has the problem that the blades of the high-strength automotive vacuum pump rotor are directly plugged in during use, resulting in poor stability and easy detachment during use, which leads to failure to work. In order to better address the above problems, promote the development of the industry's technical level, and improve core competitiveness, this application proposes a new composition structure that is different from the existing technology. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a stable vacuum pump rotor assembly.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A stable vacuum pump rotor assembly includes a rotor body and blades. The rotor body has a groove inside, and the middle body of the blade is located inside the groove. Both sides of the rotor body have clearance grooves, and the two ends of the blade pass through the clearance grooves. Multiple fixing blocks are fixedly connected to the top of the rotor body, and a slot is formed between every two fixing blocks. A stop block is movably connected in the slot. The stop block has a slot, and a first screw is inserted into the slot. The top of the rotor body has two second threaded grooves, and the first screw is threadedly connected to the corresponding second threaded groove. Auxiliary fixing components are provided on both sides of the rotor body.

[0007] As a further embodiment of this utility model, the auxiliary fixing component includes two L-shaped plates, which are welded to the outer wall of the rotor body. Each of the two L-shaped plates is rotatably connected with a second screw. One end of the second screw is threadedly connected to a pressing block through a first threaded groove, and the pressing block is in contact with the blade.

[0008] As a further embodiment of this invention, the first threaded groove is formed on the extrusion block.

[0009] As a further embodiment of this invention, the stop block contacts the top of the blade.

[0010] As a further embodiment of this invention, the slot is connected to the second threaded groove at its corresponding position.

[0011] As a further embodiment of this invention, the top of the inner ring of the rotor body is provided with an inclined surface.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. By using the combination of the stop block and the first screw, this utility model can not only restrict the height of the rotor body, but also provide extrusion force on the height of the blade intermediate body, so that the rotor body and the blade intermediate body are stably connected, avoiding the situation that is easy to detach during use, and improving the stability of the device.

[0014] 2. By setting up auxiliary fixing components, the extrusion blocks make extrusion contact with the parts of the blades that extend out of the rotor body at both ends, and the blades are subjected to horizontal clamping force, thereby further fixing the rotor body and the blades, and making the device more stable during operation.

[0015] 3. This utility model, through the combined use of the clearance groove and the recess, facilitates the positioning and installation of the blades by the staff, and also allows the position of the blades to be initially restricted. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a vacuum pump rotor assembly that can be installed stably according to this utility model.

[0017] Figure 2 This is a schematic cross-sectional view of an L-shaped plate structure for a stable vacuum pump rotor assembly proposed in this utility model.

[0018] Figure 3 This is a schematic cross-sectional view of the rotor structure of a vacuum pump rotor assembly that can be installed stably according to this utility model.

[0019] In the figure: 1. Alternating groove; 2. Groove; 3. Blade; 4. Stop block; 5. First screw; 6. Slot; 7. Fixing block; 8. Rotor body; 9. L-shaped plate; 10. Extrusion block; 11. Second screw; 12. First threaded groove; 13. Groove opening; 14. Second threaded groove; 15. Inclined surface. Detailed Implementation

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Therefore, all other embodiments of this application described herein, and all embodiments obtained by those skilled in the art without creative effort based on the embodiments in this application, should fall within the scope of protection of this application.

[0021] Reference Figures 1-3 A stable vacuum pump rotor assembly includes a rotor body 8 and blades 3. The rotor body 8 has a groove 2 inside, the width tolerance of the groove 2 is H7 / g6, and it forms a transition fit with the blades 3 with a gap of 0.05-0.1mm. The middle body of the blades 3 is located inside the groove 2. Both sides of the rotor body 8 have clearance grooves 1, and both ends of the blades 3 pass through the clearance grooves 1.

[0022] The use of the clearance groove 1 and the groove 2 makes it easier for workers to position and install the blade 3, and also allows the position of the blade 3 to be initially restricted.

[0023] Multiple fixing blocks 7 are welded to the top of the rotor body 8. The fixing blocks 7 have an L-shaped structure, and a slot 6 is formed between every two fixing blocks 7. The blade 3 is placed in the groove 2 and the two ends of the blade 3 pass through the clearance groove 1. A stop block 4 is slidably connected in the slot 6. A slot 13 is opened on the stop block 4. A first screw 5 is inserted into the slot 13. Two second threaded grooves 14 are opened on the top of the rotor body 8, and the first screw 5 is threadedly connected to the corresponding second threaded groove 14.

[0024] Push the two stops 4 to move them towards the middle until the slot 13 connects with the second threaded slot 14. At this time, the stops 4 contact the top of the blade 3. Then, insert the first screw 5 from the slot 13 into the second threaded slot 14 and rotate the first screw 5 to make it enter the second threaded slot 14, thereby fixing the position of the stops 4. This restricts and fixes the position of the blade 3 in the rotor body 8. It not only restricts the height of the rotor body 8, but also provides extrusion force in the height of the blade 3 intermediate body, so that the rotor body 8 and the blade 3 intermediate body are stably connected.

[0025] It should be noted that auxiliary fixing components are provided on both sides of the rotor body 8. The auxiliary fixing components include two L-shaped plates 9, which are welded to the outer wall of the rotor body 8. A second screw 11 is rotatably connected to each of the two L-shaped plates 9. The tensile strength of the first screw 5 and the second screw 11 is ≥800MPa.

[0026] One end of the second screw 11 is threaded to the pressing block 10 through the first threaded groove 12, and the pressing block 10 is in contact with the blade 3. Rotating the second screw 11 causes the pressing block 10 to move until the pressing block 10 is pressed into contact with the blade 3, thereby further fixing the position of the two ends of the blade 3 extending out of the rotor body 8. At the same time, the pressing block 10 can increase the friction with the two ends of the blade 3. The first threaded groove 12 is opened on the pressing block 10, and the displacement distance of the pressing block 10 is within the length of the first threaded groove 12. The stop block 4 is in contact with the top of the blade 3, and the groove 13 is connected to the second threaded groove 14 at its corresponding position.

[0027] The top of the inner ring of the rotor body 8 is provided with a slope 15, the slope angle of which is 40-60° and the guide length is ≥2-5mm, which makes it easier for the staff to insert the blade 3 into the rotor body 8. This application can also add a locking nut on the first screw 5 and the second screw 11 as needed to achieve further fixation.

[0028] Working principle: When it is necessary to install the blade 3 on the rotor body 8, first place the blade 3 in the groove 2 and make the two ends of the blade 3 pass through the clearance groove 1. Then push the two stops 4 to move them towards the middle until the groove 13 is connected to the second threaded groove 14. At this time, the stops 4 contact the top of the blade 3. Then insert the first screw 5 from the groove 13 into the second threaded groove 14 and rotate the first screw 5 to make the first screw 5 enter the second threaded groove 14, thereby fixing the position of the stops 4. Then the stops 4 restrict and fix the position of the blade 3 in the rotor body 8. Then rotate the second screw 11 to make the pressing block 10 move horizontally along the L-shaped plate 9 until the pressing block 10 presses and contacts the blade 3, thereby further fixing the position of the two ends of the blade 3 that protrude from the rotor body 8.

[0029] This utility model has been described through the above embodiments. Those skilled in the art will understand that this utility model is not limited to the above embodiments. Many more modifications can be made based on the teachings of this utility model, and all such modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A stable mounted vacuum pump rotor assembly comprising a rotor body (8) and blades (3), characterized in that, The rotor body (8) has a groove (2) inside, and the middle body of the blade (3) is located inside the groove (2). Both sides of the rotor body (8) have clearance grooves (1), and both ends of the blade (3) pass through the clearance grooves (1). The top of the rotor body (8) is fixedly connected to multiple fixing blocks (7), and a slot (6) is formed between every two fixing blocks (7). A stop block (4) is movably connected in the slot (6). The stop block (4) has a slot (13), and a first screw (5) is inserted into the slot (13). The top of the rotor body (8) has two second threaded slots (14), and the first screw (5) is threadedly connected to the corresponding second threaded slot (14). Both sides of the rotor body (8) are provided with auxiliary fixing components.

2. A stable mounted vacuum pump rotor assembly according to claim 1, characterized in that The auxiliary fixing assembly includes two L-shaped plates (9), which are welded to the outer wall of the rotor body (8). Each of the two L-shaped plates (9) is rotatably connected with a second screw (11). One end of the second screw (11) is threaded to a pressing block (10) through a first threaded groove (12), and the pressing block (10) is in contact with the blade (3).

3. A stable mounted vacuum pump rotor assembly according to claim 2, wherein, The first threaded groove (12) is formed on the extrusion block (10).

4. A stable mounted vacuum pump rotor assembly as claimed in claim 1, wherein, The stop (4) is in contact with the top of the blade (3).

5. A stable mounted vacuum pump rotor assembly as claimed in claim 1, wherein, The slot (13) is connected to the second threaded slot (14) at its corresponding position.

6. A stable mounted vacuum pump rotor assembly as claimed in claim 1, wherein, The top of the inner ring of the rotor body (8) is provided with a slope (15).

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