CN216044397U

CN216044397U - Magnetic fluid sealing Roots vacuum pump

Info

Publication number: CN216044397U
Application number: CN202121507555.7U
Authority: CN
Inventors: 吴骏驰
Original assignee: Nantong Tianyi Vacuum Equipment Co ltd
Current assignee: Nantong Tianyi Vacuum Equipment Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2022-03-15
Anticipated expiration: 2031-07-02

Abstract

The utility model discloses a magnetic fluid sealing Roots vacuum pump, which belongs to the technical field of Roots vacuum pumps, and is characterized in that the Roots vacuum pump is installed by arranging an anti-seismic connecting seat, the anti-seismic connecting seat is provided with an installation seat and a movable connecting seat, the vertical vibration generated in the working process of the Roots pump can be well buffered by the cooperation of a hydraulic support column, a first spring sleeve and a first spring, the fixed base is also provided with a sliding connecting groove, a U-shaped plate can be movably arranged in the sliding connecting groove and can effectively buffer the vibration generated in the transverse direction in the working process of the Roots pump by the cooperation of a second spring, so that the vibration of the Roots pump in the working process is reduced as much as possible, and the stability of magnetic fluid in the interior of the Roots pump is ensured, effectively prolongs the service life of the roots pump.

Description

Magnetic fluid sealing Roots vacuum pump

Technical Field

The utility model belongs to the technical field of Roots vacuum pumps, and particularly relates to a magnetic fluid sealing Roots vacuum pump.

Background

The Roots vacuum pump is a variable displacement vacuum pump in which two blade-shaped rotors rotating synchronously in opposite directions are installed in the pump, small gaps are formed between the rotors and the inner wall of a pump shell, and the rotors and the inner wall of the pump shell are not in contact with each other, the structure and the working principle of the variable displacement vacuum pump are similar to those of a Roots blower, an air suction port of the variable displacement vacuum pump is connected with a vacuum container or a main pump of a vacuum system during working, the rotors and the pump shell of the variable displacement vacuum pump are not in contact with each other, the gaps are generally 0.1-0.8 mm, oil lubrication is not needed, the molded lines of the rotors comprise circular arcs, involutes, cycloid lines and the like, the volume utilization rate of the involute rotor pump is high, the processing precision is easy to guarantee, and therefore the molded lines of the rotors are of the multi-purpose involute type. The Roots vacuum pump has the advantages of quick start, low power consumption, low operation and maintenance cost, high pumping speed and high efficiency, and is insensitive to a small amount of water vapor and dust contained in a pumped body, so the Roots vacuum pump is widely applied, and comprises a pump body, a main shaft is arranged in the pump body, side covers are usually arranged at two ends of the pump body, and the main shaft needs to penetrate through the side covers to be connected with a motor;

the connector part of the existing Roots vacuum pump is realized by a magnetic fluid sealing technology, the magnetic fluid sealing technology is developed on the basis of magnetic fluid, and when the magnetic fluid is injected into a gap with a magnetic field, the whole gap can be filled with the magnetic fluid to form a liquid O-shaped sealing ring which is commonly used for vacuum sealing due to the flexible sealing performance;

however, the stability of the conventional magnetic fluid sealing roots vacuum pump is neglected in the use process, and the roots pump is directly fixed on the bottom surface or the mounting plate in the use process in the prior art, so that certain vibration can be generated in the working process of the roots pump, the balance of the magnetic fluid in the vacuum pump is damaged, and the normal use of the roots pump is influenced.

SUMMERY OF THE UTILITY MODEL

The magnetic fluid sealed roots vacuum pump can effectively buffer the vibration in the transverse direction and the vertical direction generated during the working of the roots pump through the matched use of the mounting seat, the movable connecting seat and the fixed base, so that the stability of the magnetic fluid in the roots pump is ensured, the quality of a roots pump body is ensured while the interior of the roots pump has good sealing property, and the problems in the background technology are solved.

In order to solve the above problems, the present invention adopts the following technical solutions.

The magnetic fluid sealing Roots vacuum pump comprises a Roots vacuum pump and a fixed base, wherein the Roots vacuum pump is fixedly connected to the fixed base, the magnetic fluid sealing Roots vacuum pump is provided with an anti-seismic connecting seat, the anti-seismic connecting seat comprises a mounting seat, a movable connecting seat and the fixed base, the mounting seat is fixedly connected to the movable connecting seat, and the movable connecting seat is movably connected to the fixed base.

Preferably, the mounting seat on be provided with the vacuum pump mounting box, the lateral wall of vacuum pump mounting box seted up the bolt hole, the vacuum pump mounting box in be provided with splint, splint swing joint inside the vacuum pump mounting box.

Preferably, the outer wall of vacuum pump mounting box on be provided with locking bolt, locking bolt through with the threaded connection of bolt hole and final butt at the surface of splint, the mount pad still be provided with the fixed plate, fixed plate fixed connection at the lower extreme of vacuum pump mounting box, the fixed plate lower extreme be provided with the connecting block, connecting block fixed connection at the lower extreme of fixed plate.

Preferably, the movable connecting seat comprises a U-shaped plate and an installation block, the installation block is fixedly connected to the U-shaped plate, an installation groove is formed in the installation block, and the shape and the size of the installation groove are matched with the connection block.

Preferably, the mounting seat is connected and mounted on the mounting block through the matching use of the connecting block and the mounting groove.

Preferably, the both ends of U template be provided with hydraulic support column and first spring sleeve, the one end fixed connection of hydraulic support column on the U template, other end fixed connection is at the lower terminal surface of fixed plate, first spring sleeve fixed connection at the both ends of U template, just first spring sleeve in be provided with first spring, the first spring sleeve's of one end fixed connection interior bottom surface, the lower terminal surface of other end fixed connection fixed plate.

Preferably, the fixed base on be provided with the sliding connection groove, the width size of sliding connection groove and the phase-match of U template, the U template pass through sliding connection groove swing joint and install on fixed base.

Preferably, the lateral wall of unable adjustment base on be provided with a plurality of second spring sleeves, second spring sleeve fixed connection at unable adjustment base's lateral wall, unable adjustment base on still be provided with the second spring, the both ends of second spring fixed connection respectively on the lateral wall of the inner wall of second spring sleeve and U template.

Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

(1) the magnetic fluid sealing Roots vacuum pump is characterized in that the mounting seat and the movable connecting seat are arranged, the connecting block arranged on the mounting seat is matched with the mounting block arranged on the movable connecting seat, the mounting seat can be connected and mounted on the movable connecting seat, and the vibration of the Roots pump in the vertical direction generated in the working process can be well buffered through the cooperation of the hydraulic support column, the first spring sleeve and the first spring.

(2) The magnetic fluid sealing roots vacuum pump is provided with the fixing base, the fixing base is provided with the sliding connection groove, the U-shaped plate can be movably installed in the sliding connection groove and can effectively buffer vibration generated in the transverse direction in the working process of the roots pump through the matching of the second spring, so that the vibration of the roots pump during working is reduced as much as possible, the stability of the magnetic fluid in the interior of the roots pump is ensured, the interior of the roots pump can have good sealing performance, the quality of a roots pump body is ensured, and the service life of the roots pump is effectively prolonged.

Drawings

FIG. 1 is a schematic view of the structure of the anti-seismic connecting base of the present invention;

FIG. 2 is a structural exploded view of the anti-seismic connector housing of the present invention;

FIG. 3 is a schematic structural view of a fixing base according to the present invention;

FIG. 4 is a schematic view of the connection structure between the movable connecting seat and the fixed base.

The corresponding relationship between the reference numbers of the figures and the names of the components in the figures is as follows:

in the figure: 100. an anti-seismic connecting base;

10. a mounting seat; 11. a vacuum pump mounting box; 111. a vacuum pump interface; 112. bolt holes; 12. a splint; 13. locking the bolt; 14. a fixing plate; 15. connecting blocks;

20. a movable connecting seat; 21. a U-shaped plate; 211. a hydraulic prop; 212. a first spring sleeve; 213. a first spring; 22. mounting blocks; 221. mounting grooves;

30. a fixed base; 31. a sliding connecting groove; 32. a second spring sleeve; 33. a second spring.

Detailed Description

The utility model is further described below in connection with specific embodiments.

Examples

As shown in fig. 1 to 4, which are schematic structural views of an anti-seismic connecting base of a magnetofluid sealed roots vacuum pump according to a preferred embodiment of the present invention, the anti-seismic connecting base 100 of this embodiment includes an installation base 10, a movable connecting base 20 and a fixed base 30, the installation base 10 is fixedly connected to the movable connecting base 20, and the movable connecting base 20 is movably connected to the fixed base 30.

The vacuum pump mounting box 10 is provided with a vacuum pump mounting box 11, the vacuum pump mounting box 11 is used for fixedly mounting a roots pump, the vacuum pump mounting box 11 is provided with a vacuum pump interface 111, the vacuum pump interface 111 is used for connecting an external component with the roots pump, the side wall of the vacuum pump mounting box 11 is provided with a bolt hole 112, a clamping plate 12 is arranged in the vacuum pump mounting box 11, the clamping plate 12 is movably connected inside the vacuum pump mounting box 11, the clamping plate 12 is used for fixedly clamping the roots pump in the vacuum pump mounting box 11, the outer wall of the vacuum pump mounting box 11 is provided with a locking bolt 13, the locking bolt 13 is connected with the bolt hole 112 through a thread and finally abuts against the surface of the clamping plate 12, and the locking bolt 13 is used for applying thrust to the clamping plate 12 so that the clamping plate 12 clamps the roots pump, the mounting base 10 is further provided with a fixing plate 14, the fixing plate 14 is fixedly connected to the lower end of the vacuum pump mounting box 11, a connecting block 15 is arranged at the lower end of the fixing plate 14, and the connecting block 15 is fixedly connected to the lower end of the fixing plate 14.

The movable connecting seat 20 comprises a U-shaped plate 21 and a mounting block 22, the mounting block 22 is fixedly connected on the U-shaped plate 21, the mounting block 22 is provided with a mounting groove 221, the shape and size of the mounting groove 221 are matched with those of the connecting block 15, the mounting seat 10 is connected and mounted on the mounting block 22 through the matching use of the connecting block 15 and the mounting groove 221, two ends of the U-shaped plate 21 are provided with a hydraulic support column 211 and a first spring sleeve 212, one end of the hydraulic supporting column 211 is fixedly connected to the U-shaped plate 21, the other end is fixedly connected to the lower end face of the fixing plate 14, the first spring sleeve 212 is fixedly connected to two ends of the U-shaped plate 21, and a first spring 213 is arranged in the first spring sleeve 212, one end of the first spring 213 is fixedly connected to the inner bottom surface of the first spring sleeve 212, and the other end is fixedly connected to the lower end surface of the fixing plate 14.

Unable adjustment base 30 on be provided with sliding connection groove 31, sliding connection groove 31's width size and U template 21's phase-match, U template 21 install on unable adjustment base 30 through sliding connection groove 31 swing joint, unable adjustment base 30's lateral wall on be provided with a plurality of second spring sleeve 32, second spring sleeve 32 fixed connection at unable adjustment base 30's lateral wall, unable adjustment base 30 on still be provided with second spring 33, second spring 33's both ends difference fixed connection on second spring sleeve 32's inner wall and U template 21's lateral wall.

In this embodiment, when the anti-vibration connecting base 100 is used for installing the magnetic fluid sealing roots vacuum pump, the roots pump is fixedly installed in the vacuum pump installation box 11, the locking bolt 13 is screwed inwards to cause the clamping plate 12 to clamp the roots pump, the installation base 10 is installed on the installation block 22 through the matching connection of the connecting block 15 and the installation groove 221, the hydraulic support column 211 and the first spring 213 are fixedly connected to the lower end face of the fixing plate 14, the second spring 33 is fixedly connected to the U-shaped plate 21 and the side wall of the fixing base 30 to complete the integral assembly, at this time, when the roots pump is started to work, the roots pump generates certain vibration, but due to the anti-vibration connecting base 100, the vibration of the roots pump can be buffered in the vertical direction by the action of the hydraulic support column 211, the first spring sleeve 212 and the first spring 213, the vibration in the transverse direction can be well buffered by the matching action of the U-shaped plate 21 and the second spring 33, and finally the vibration generated in the working process of the roots pump can be buffered in the transverse direction and the vertical direction, so that the vibration of the roots pump is greatly reduced.

While the utility model has been described in further detail in connection with specific embodiments thereof, it will be understood that the utility model is not limited thereto, and that various other modifications and substitutions may be made by those skilled in the art without departing from the spirit of the utility model, which should be considered to be within the scope of the utility model as defined by the appended claims.

Claims

1. A magnetic fluid sealing Roots vacuum pump comprises a Roots vacuum pump and a fixed base (30), wherein the Roots vacuum pump is fixedly connected to the fixed base (30);

the method is characterized in that:

the magnetic fluid sealing Roots vacuum pump is provided with an anti-seismic connecting base (100), the anti-seismic connecting base (100) comprises a mounting base (10), a movable connecting base (20) and a fixed base (30), the mounting base (10) is fixedly connected to the movable connecting base (20), and the movable connecting base (20) is movably connected to the fixed base (30).

2. A magnetofluid-sealed roots vacuum pump as claimed in claim 1, wherein: the vacuum pump mounting structure is characterized in that a vacuum pump mounting box (11) is arranged on the mounting seat (10), a bolt hole (112) is formed in the side wall of the vacuum pump mounting box (11), a clamping plate (12) is arranged in the vacuum pump mounting box (11), and the clamping plate (12) is movably connected inside the vacuum pump mounting box (11).

3. A magnetic fluid seal roots vacuum pump according to claim 2, wherein: the outer wall of vacuum pump mounting box (11) on be provided with locking bolt (13), locking bolt (13) through with the threaded connection of bolt hole (112) and final butt on the surface at splint (12), mount pad (10) still be provided with fixed plate (14), fixed plate (14) fixed connection at the lower extreme of vacuum pump mounting box (11), fixed plate (14) lower extreme be provided with connecting block (15), connecting block (15) fixed connection at the lower extreme of fixed plate (14).

4. A magnetofluid-sealed roots vacuum pump as claimed in claim 1, wherein: activity connecting seat (20) include U template (21) and installation piece (22), installation piece (22) fixed connection on U template (21), installation piece (22) on be provided with mounting groove (221), the shape size and the connecting block (15) phase-match of mounting groove (221).

5. A magnetic fluid seal Roots vacuum pump according to claim 4, wherein: the mounting seat (10) is connected and mounted on the mounting block (22) through the matching of the connecting block (15) and the mounting groove (221).

6. A magnetic fluid seal Roots vacuum pump according to claim 4, wherein: the both ends of U template (21) be provided with hydraulic support post (211) and first spring sleeve (212), the one end fixed connection of hydraulic support post (211) on U template (21), other end fixed connection is at the lower terminal surface of fixed plate (14), first spring sleeve (212) fixed connection at the both ends of U template (21), just first spring sleeve (212) in be provided with first spring (213), the interior bottom surface of the first spring sleeve (212) of one end fixed connection of first spring (213), the lower terminal surface of other end fixed connection fixed plate (14).

7. A magnetofluid-sealed roots vacuum pump as claimed in claim 1, wherein: the fixed base (30) on be provided with sliding connection groove (31), sliding connection groove (31) the width size and the phase-match of U template (21), U template (21) install on fixed base (30) through sliding connection groove (31) swing joint.

8. A magnetofluid-sealed roots vacuum pump as claimed in claim 1, wherein: the lateral wall of unable adjustment base (30) on be provided with a plurality of second spring sleeve (32), second spring sleeve (32) fixed connection at the lateral wall of unable adjustment base (30), unable adjustment base (30) on still be provided with second spring (33), both ends of second spring (33) fixed connection respectively on the lateral wall of the inner wall of second spring sleeve (32) and U template (21).