Roots vacuum pump with detachable shaft sleeve structure

Abstract

The roots vacuum pump with the detachable shaft sleeve structure comprises a vacuum pump body, a base is fixedly arranged at the bottom of the vacuum pump body, a rotating shaft is rotationally installed in the vacuum pump body, and the outer wall of the rotating shaft is sleeved with a detaching assembly. An adjusting assembly is arranged below the base, a mounting plate is arranged below the adjusting assembly, the adjusting assembly comprises first threaded rods, first hexagon nuts and a limiting plate, convex plates are arranged on the two sides of the outer wall of the base, the first threaded rods are arranged in the convex plates, and the first hexagon nuts are in threaded connection with the outer walls of the first threaded rods; the number of the limiting plates is two, two first guide grooves are formed in each limiting plate, the first threaded rods are arranged in the first guide grooves, and second threaded rods are arranged at the positions, located on one sides of the first guide grooves, in the limiting plates. The Roots vacuum pump can be stably installed and fixed and the shaft sleeve can be rapidly disassembled while multi-size adjustment of the Roots vacuum pump is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft sleeve structures, in particular to a Roots vacuum pump with a detachable shaft sleeve structure. Background Art

[0002] A Roots vacuum pump is a positive displacement vacuum pump that utilizes two "8"-shaped rotors rotating synchronously in opposite directions within the pump body to achieve both suction and exhaust functions. A tiny gap, typically 0.1-0.4mm, is maintained between the rotors and between the rotors and the pump body. This gap prevents contact between the rotors while ensuring a tight seal for the gas. As the rotors rotate, gas is drawn into the expanding space between the rotors and the pump body at the inlet. As the rotors rotate, the drawn-in gas is carried to the exhaust port, where the space surrounding the gas gradually shrinks, compressing the gas and expelling it from the pump.

[0003] The existing Roots vacuum pump has some shortcomings when in use. Often, the existing Roots vacuum pump is directly fixed in a fixed installation place by bolts. The existing Roots vacuum pump cannot be adjusted into place at one time during installation. When the size distance of the Roots vacuum pump needs to be slightly adjusted, all the bolts need to be removed, and then the Roots vacuum pump needs to be moved to select an appropriate distance. The operation is cumbersome, time-consuming and labor-intensive, and the position of the Roots vacuum pump cannot be adjusted quickly. In view of the above problems, a Roots vacuum pump with a detachable sleeve structure is proposed for improvement and upgrading. Utility Model Content

[0004] The purpose of the utility model is to provide a Roots vacuum pump with a detachable sleeve structure to solve the problems raised in the above background technology.

[0005] To solve the above problems, the following technical solutions are provided:

[0006] A Roots vacuum pump with a detachable sleeve structure is designed, comprising a vacuum pump body, a base fixedly provided at the bottom of the vacuum pump body, and a rotating shaft rotatably installed inside the vacuum pump body, a disassembly component sleeved on the outer wall of the rotating shaft, an adjustment component provided under the base and a mounting plate provided under the adjustment component, the adjustment component comprising a first threaded rod, a first hexagonal nut and a limit plate, convex plates provided on both sides of the outer wall of the base and a first threaded rod provided inside the convex plates, and a first hexagonal nut threadedly connected to the outer wall of the first threaded rod.

[0007] Furthermore, there are two limit plates, and two first guide grooves are provided inside the two limit plates, and the first threaded rods are both provided inside the first guide grooves.

[0008] Furthermore, a second threaded rod is provided inside the two limit plates on one side of the first guide groove, and the outer wall of the second threaded rod is threadedly connected to a second hexagonal nut. Two second guide grooves are symmetrically opened inside the mounting plate, and the second threaded rod is arranged inside the second guide groove.

[0009] Furthermore, a positioning block is fixedly provided on the upper end of one of the limit plates, a first screw rod is internally threadedly connected to the positioning block, and a threaded knob and a pressure plate are fixedly connected at both ends of the first screw rod.

[0010] Furthermore, the disassembly assembly includes a first sleeve, a second sleeve and a positioning shaft, the first sleeve and the second sleeve are both rotatably mounted on the outer wall of the positioning shaft, one end of the positioning shaft is clamped on the outer wall of the vacuum pump body, and the outer walls of the first sleeve and the second sleeve are both provided with sealing rings.

[0011] Furthermore, a clamping groove is provided inside the second sleeve, a clamping block is fixedly connected to one end of the first sleeve and one end of the clamping block is arranged on the clamping groove, and a protrusion is fixedly provided at one end of the first sleeve and the second sleeve, a second screw is provided inside one of the protrusions and an anti-slip knob is fixedly connected to one end of the second screw.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model is provided with a first threaded rod, a second threaded rod, a limit plate, a mounting plate, a base, a positioning block, a first screw and other components. The four first threaded rods on the base are clamped on the first guide grooves of the two limit plates, and the four first threaded rods are moved left and right on the first guide grooves for adjustment. Then, the four first hexagonal nuts are locked by a wrench, and the four second threaded rods on the two limit plates are limitedly moved on the second guide grooves of the mounting plate. Finally, the threaded knob is manually rotated to drive the first screw to rotate in the positioning block, prompting the pressure plate to squeeze the base, which is conducive to the multi-size adjustment of the Roots vacuum pump while stably installing and fixing it, thereby improving the installation application range of the Roots vacuum pump, reducing the burden on the staff, and having a simple structure.

[0014] 2. The device of the utility model is provided with a first sleeve, a second sleeve, a positioning shaft, a second screw, an anti-slip knob, a protrusion and other components. By rotating the anti-slip knob, the second screw is driven to rotate in the protrusion on the second sleeve, so that the second screw is rotated away from the protrusion on the first sleeve. Then the worker rotates the first sleeve and the second sleeve from the positioning shaft to the same angle respectively, and at the same time sets a sealing ring on the rear side of the sleeve, which is conducive to the quick disassembly of the sleeve while improving the sealing effect between the sleeve and the rotating shaft, and the operation is convenient.

[0015] With reference to the following description and accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope thereby. The embodiments of the present invention include numerous variations, modifications, and equivalents within the spirit and scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of a Roots vacuum pump with a detachable sleeve structure according to the present invention;

[0018] Figure 2 This is a schematic diagram of the side local motion structure of a Roots vacuum pump with a detachable sleeve structure of the present invention;

[0019] Figure 3 for Figure 1 A schematic diagram of the partially enlarged split structure of the regulating component;

[0020] Figure 4 for Figure 2 A partial enlarged schematic diagram of the disassembled component.

[0021] In the figure: 1. Vacuum pump body; 2. Rotating shaft; 3. Disassembly assembly; 31. First sleeve; 32. Second sleeve; 33. Positioning shaft; 34. Sealing ring; 35. Snap-in block; 36. Snap-in groove; 37. Bump; 38. Anti-slip knob; 39. Second screw; 4. Base; 5. Mounting plate; 51. Second guide groove; 6. Adjustment assembly; 61. First threaded rod; 62. First hexagonal nut; 63. Limiting plate; 64. Second threaded rod; 65. Second hexagonal nut; 66. First guide groove; 67. Positioning block; 68. Threaded knob; 69. First screw; 691. Pressure plate. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1 - Figure 4As shown, the present embodiment provides a Roots vacuum pump with a detachable sleeve structure, comprising a vacuum pump body 1, a base 4 fixedly provided at the bottom of the vacuum pump body 1, and a rotating shaft 2 rotatably installed inside the vacuum pump body 1, a disassembly component 3 is provided on the outer wall of the rotating shaft 2, an adjustment component 6 is provided below the base 4 and a mounting plate 5 is provided below the adjustment component 6, the adjustment component 6 comprises a first threaded rod 61, a first hexagonal nut 62 and a limit plate 63, convex plates are provided on both sides of the outer wall of the base 4 and the first threaded rod 61 is provided inside the convex plate, and the outer wall of the first threaded rod 61 is threadedly connected to the first hexagonal nut 62.

[0024] Preferably, there are two limit plates 63 and two first guide grooves 66 are provided inside the two limit plates 63, the first threaded rods 61 are provided inside the first guide grooves 66, and the second threaded rods 64 are provided inside the two limit plates 63 on one side of the first guide groove 66. The outer wall of the second threaded rod 64 is threadedly connected to the second hexagonal nut 65, and two second guide grooves 51 are symmetrically provided inside the mounting plate 5. The second threaded rods 64 are provided inside the second guide grooves 51, and a positioning block 67 is fixedly provided on the upper end of one of the limit plates 63. The positioning block 67 is threadedly connected to the first screw 69, and the two ends of the first screw 69 are respectively fixedly connected to a threaded knob 68 and a pressure plate 691.

[0025] The four first threaded rods 61 on the base 4 are clamped on the first guide grooves 66 on the two limiting plates 63 to limit the four first threaded rods 61, and the four first threaded rods 61 are moved left and right on the first guide grooves 66 for adjustment, and then the four first hexagonal nuts 62 are locked by a wrench, and the four second threaded rods 64 on the two limiting plates 63 are limited and moved on the second guide grooves 51 on the mounting plate 5, and the four second hexagonal nuts 65 are locked by a wrench, and finally the threaded knob 68 is manually turned to drive the first screw rod 69 to rotate in the positioning block 67, so as to drive the pressure plate 691 to squeeze the base 4.

[0026] Preferably, the disassembly assembly 3 includes a first sleeve 31, a second sleeve 32 and a positioning shaft 33, the first sleeve 31 and the second sleeve 32 are both rotatably mounted on the outer wall of the positioning shaft 33, one end of the positioning shaft 33 is clamped on the outer wall of the vacuum pump body 1, the outer walls of the first sleeve 31 and the second sleeve 32 are both provided with sealing rings 34, a clamping groove 36 is opened inside the second sleeve 32, one end of the first sleeve 31 is fixedly connected to a clamping block 35 and one end of the clamping block 35 is set on the clamping groove 36, one end of the first sleeve 31 and the second sleeve 32 are both fixedly provided with a protrusion 37, one of the protrusions 37 is provided with a second screw 39 inside and one end of the second screw 39 is fixedly connected to an anti-slip knob 38.

[0027] By turning the anti-slip knob 38, the second screw 39 is driven to rotate in the protrusion 37 on the second sleeve 32, so that the second screw 39 is rotated away from the protrusion 37 on the first sleeve 31. Then the worker rotates the first sleeve 31 and the second sleeve 32 to the same angle from the positioning shaft 33 respectively, so that the clamping block 35 on the first sleeve 31 is dislocated from the clamping groove 36 on the second sleeve 32, and at the same time, a sealing ring 34 is set on the rear side of the sleeve.

[0028] The use principle and use process of the present invention are as follows: when installing the Roots vacuum pump, the four first threaded rods 61 on the base 4 are clamped on the first guide grooves 66 on the two limit plates 63 to limit the four first threaded rods 61. According to the installation distance of the Roots vacuum pump, the four first threaded rods 61 are moved left and right on the first guide grooves 66 for adjustment. When the distance is adjusted to a suitable distance, the four first hexagonal nuts 62 are locked by a wrench. After fixing, the four second threaded rods 64 on the two limit plates 63 are limited and moved on the second guide grooves 51 on the mounting plate 5 to adjust the Roots vacuum pump on the base 4 to move back and forth. After moving to a suitable distance, the four second hexagonal nuts 65 are locked by a wrench, and finally the threaded knob 68 is manually turned to drive the first screw 69 to rotate. The rotation of the positioning block 67 causes the pressure plate 691 to squeeze the base 4. When the distance of the Roots vacuum pump is not appropriate, only one set of hexagonal nuts needs to be removed for adjustment. There is no need to remove all of them when installing the Roots vacuum pump. The Roots vacuum pump can be adjusted to multiple sizes while being stably installed and fixed, saving time and effort. By turning the anti-slip knob 38, the second screw 39 is driven to rotate in the protrusion 37 on the second sleeve 32, so that the second screw 39 is rotated away from the protrusion 37 on the first sleeve 31. Then the worker rotates the first sleeve 31 and the second sleeve 32 to the same angle from the positioning shaft 33 respectively, so that the clamping block 35 on the first sleeve 31 is misaligned from the clamping groove 36 on the second sleeve 32. At the same time, a sealing ring 34 is provided on the rear side of the sleeve, which can quickly disassemble the sleeve while improving the sealing effect between the sleeve and the rotating shaft 2.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

Claims

1. A Roots vacuum pump with a detachable sleeve structure, characterized in that: The invention comprises a vacuum pump body (1), wherein a base (4) is fixedly provided at the bottom of the vacuum pump body (1), and a rotating shaft (2) is rotatably installed inside the vacuum pump body (1), and a disassembly component (3) is sleeved on the outer wall of the rotating shaft (2), an adjustment component (6) is provided below the base (4), and a mounting plate (5) is provided below the adjustment component (6), and the adjustment component (6) comprises a first threaded rod (61), a first hexagonal nut (62) and a limiting plate (63), convex plates are provided on both sides of the outer wall of the base (4), and the first threaded rod (61) is provided inside the convex plates, and the outer wall of the first threaded rod (61) is threadedly connected to the first hexagonal nut (62).

2. A Roots vacuum pump with a detachable sleeve structure according to claim 1, characterized in that: There are two limit plates (63) and two first guide grooves (66) are provided inside the two limit plates (63), and the first threaded rods (61) are arranged inside the first guide grooves (66).

3. The Roots vacuum pump with a detachable sleeve structure according to claim 2, characterized in that: A second threaded rod (64) is provided inside the two limiting plates (63) on one side of the first guide groove (66), and the outer wall of the second threaded rod (64) is threadedly connected to a second hexagonal nut (65). Two second guide grooves (51) are symmetrically provided inside the mounting plate (5), and the second threaded rod (64) is arranged inside the second guide groove (51).

4. The Roots vacuum pump with a detachable sleeve structure according to claim 3, characterized in that: A positioning block (67) is fixedly provided on the upper end of one of the limit plates (63), and a first screw rod (69) is internally threadedly connected to the positioning block (67), and a threaded knob (68) and a pressure plate (691) are fixedly connected at both ends of the first screw rod (69).

5. The Roots vacuum pump with a detachable sleeve structure according to claim 1, characterized in that: The disassembly assembly (3) comprises a first shaft sleeve (31), a second shaft sleeve (32) and a positioning shaft (33); the first shaft sleeve (31) and the second shaft sleeve (32) are both rotatably mounted on the outer wall of the positioning shaft (33); one end of the positioning shaft (33) is clamped on the outer wall of the vacuum pump body (1); and the outer walls of the first shaft sleeve (31) and the second shaft sleeve (32) are both provided with sealing rings (34).

6. The Roots vacuum pump with a detachable sleeve structure according to claim 5, characterized in that: A clamping groove (36) is provided inside the second shaft sleeve (32); one end of the first shaft sleeve (31) is fixedly connected to a clamping block (35), and one end of the clamping block (35) is arranged on the clamping groove (36); one end of the first shaft sleeve (31) and the second shaft sleeve (32) are both fixedly provided with a protrusion (37); a second screw rod (39) is provided inside one of the protrusions (37), and one end of the second screw rod (39) is fixedly connected to an anti-slip knob (38).

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