CN218325355U

CN218325355U - Vacuum pump body

Info

Publication number: CN218325355U
Application number: CN202223010992.5U
Authority: CN
Inventors: 邵健; 邵建栋; 陆健
Original assignee: WUXI UNIVERSAL PRECISION CASTING CO Ltd
Current assignee: WUXI UNIVERSAL PRECISION CASTING CO Ltd
Priority date: 2022-11-13
Filing date: 2022-11-13
Publication date: 2023-01-17
Anticipated expiration: 2032-11-13

Abstract

The utility model provides a vacuum pump body, include: the water pump comprises a pump body, wherein an air inlet pipe and an air outlet pipe are arranged on the pump body, a front-mounted filtering assembly is arranged on the air inlet pipe and comprises a connecting ring, a sound insulation outer cover is arranged at the top of the connecting ring, a filter cylinder is arranged in the sound insulation outer cover, an air inlet is formed in the top of the sound insulation outer cover, and a transparent strip is arranged on the surface of the sound insulation outer cover; the utility model discloses a set up leading filtering component in the intake pipe, realized the particulate impurity in the filtering gets into the intake pipe before gaseous, prevent effectively that particulate impurity from entering into the pump body in, and then reduce the efficiency of particulate impurity wearing and tearing impeller, through setting up rubber strip and time shape annular, the multiple effect that blocks gas leakage has been realized, it is airtight strong effectively to have strengthened, through setting up syllable-dividing dustcoat and helicla flute, effectively reduce gaseous direct vertically impact on the dustcoat inner wall that gives sound insulation, there is and then reduce the noise that gaseous impact soundproof dustcoat inner wall in-process sent.

Description

Vacuum pump body

Technical Field

The utility model relates to a vacuum pump technical field particularly, relates to a vacuum pump body.

Background

As shown in fig. 1, the vacuum pump includes a pump body 1, and an air inlet pipe 4 and an air outlet pipe 5 are respectively arranged at one end of the pump body 1; the air inlet pipe 4 and the air outlet pipe 5 are respectively communicated with the interior of the pump body 1; when the vacuum pump is used, particle impurities in external air enter the pump body 1 along with the particle impurities, and abrasion of an impeller in the pump body 1 occurs in the long-time rotating process, so in the prior art, part of the vacuum pump connects the air inlet pipe 4 with an external filtering device to avoid the particle impurities from entering the pump body 1, but when the vacuum pump uses the filtering device, the situation that particle impurities are accumulated on the surface of a filter cylinder needs to be frequently disassembled and observed, because the content of the particle impurities in the use environment of the vacuum pump cannot be accurately estimated, the accurate maintenance frequency cannot be determined, the phenomenon that the filtering device is blocked so that the vacuum pump cannot intake air can be caused by untimely maintenance can be caused, and meanwhile, when the vacuum pump enters air through the filtering device, noise can be generated when air flow impacts the shell of the filtering device.

Therefore, it is necessary to develop a vacuum pump body that prevents particle interference.

SUMMERY OF THE UTILITY MODEL

The utility model provides a vacuum pump body solves above-mentioned problem.

In order to achieve the above object, an embodiment of the present invention provides a vacuum pump body, including: the pump body, be provided with intake pipe and outlet duct on the pump body, be provided with leading filtering component in the intake pipe, leading filtering component includes the go-between, the go-between is fixed in the intake pipe, the top surface of go-between is installed the dustcoat that gives sound insulation, be provided with in the dustcoat that gives sound insulation and strain a section of thick bamboo, the air inlet has been seted up at the top of dustcoat that gives sound insulation, the surface of dustcoat that gives sound insulation is provided with the transparent strip.

Furthermore, a spiral groove is formed in the inner wall of the sound insulation outer cover.

Furthermore, the spiral groove is provided with a first inclined surface and a second inclined surface corresponding to the first inclined surface, the first inclined surface is arranged in a mode that the first inclined surface inclines upwards from the direction of the air inlet pipe to the direction of the air inlet pipe, and the second inclined surface is arranged in a mode that the second inclined surface inclines downwards from the direction of the air inlet pipe to the direction of the air inlet pipe.

Furthermore, the bottom of go-between has been seted up back the annular, it is embedded to be equipped with seal structure to return the annular, seal structure's bottom surface with the ring flange top surface of intake pipe tip offsets.

Further, seal structure includes the rubber strip, the bottom surface of rubber strip with the ring flange top surface of air inlet pipe tip offsets.

Furthermore, an arc-shaped surface is arranged on one surface of the rubber strip, which is abutted against the top surface of the flange plate.

Furthermore, a V-shaped groove is formed in the arc-shaped surface.

Further, the radius of the inner wall of the sound insulation outer cover gradually increases from the direction of the air inlet to the direction of the air inlet pipe.

Compared with the prior art, the utility model provides a stop valve, its characteristics are:

1. the front-mounted filter assembly is arranged on the air inlet pipe, so that particle impurities in air before entering the air inlet pipe are filtered, the particle impurities are effectively prevented from entering the pump body, and the efficiency of the particle impurities for wearing the impeller is reduced;

2. the rubber strips are embedded in the circular groove, so that the effect of multiple gas leakage blocking is achieved, the air tightness is effectively enhanced, the sound insulation outer cover and the spiral groove are arranged, the direct vertical impact of gas on the inner wall of the sound insulation outer cover is effectively reduced, and the noise generated in the process of impacting the inner wall of the sound insulation outer cover by the gas is further reduced;

3. set up the transparent stripe on the dustcoat gives sound insulation, reduce the maintenance operation degree of difficulty.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a perspective view of a vacuum pump according to the prior art;

fig. 2 is a perspective view of a preferred embodiment of a vacuum pump body of the present invention;

FIG. 3 is a perspective view of a preferred embodiment of the pre-filter assembly of the present invention;

FIG. 4 is a perspective cross-sectional view of a preferred embodiment of the pre-filter assembly of the present invention;

fig. 5 is a schematic bottom view of the connection ring of the present invention;

fig. 6 is a schematic view of the cross-sectional structure of the rubber strip of the present invention.

Wherein, 1, a pump body; 4. an air inlet pipe; 40. a pre-filter assembly; 41. a connecting ring; 42. a sound insulating enclosure; 43. a transparent strip; 44. an air inlet; 45. a filter cartridge; 46. a circular ring groove; 47. a helical groove; 471. a first inclined plane; 472. a second inclined plane; 48. a sealing structure; 481. a rubber strip; 482. an arc-shaped surface; 483. a V-shaped groove; 5. and an air outlet pipe.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

Referring to fig. 2 to 3, fig. 2 is a perspective view of a pump body of a vacuum pump according to a preferred embodiment of the present invention; fig. 3 is a perspective view of a preferred embodiment of the pre-filter assembly of the present invention. As shown in fig. 2 to 3, the utility model provides a vacuum pump body, include: the vacuum pump comprises a pump body 1, wherein an air inlet pipe 4 and an air outlet pipe 5 are arranged on the pump body 1, the vacuum pump is the same as the vacuum pump in the prior art, an impeller (shown in the figure) is further arranged in the pump body 1, in order to avoid the situation that external air carries particle impurities when entering the pump body 1, and the abrasion of the impeller and the particle impurities is caused when the impeller rotates, so that the damage probability of the impeller in the long-time rotating process is effectively reduced, a front-mounted filter assembly 40 is arranged on the air inlet pipe 4, the front-mounted filter assembly 40 can be used for removing the particle impurities in the air entering the pump body 1, the front-mounted filter assembly 40 comprises a connecting ring 41, the connecting ring 41 mainly has the function of fixedly connecting the air inlet pipe 4 and the front-mounted filter assembly 40 relatively, the end of the air inlet pipe 4 is provided with a flange, that needs to be additionally stated, the connecting ring 41 is used for being directly connected to the flange, a thread pit is arranged on one side, where the air inlet pipe 41 and the flange abuts against the flange, and the thread pit is arranged below the bolt penetrating through the flange below the flange, and the connecting ring 41 is fixed on the connecting ring 4.

Referring to fig. 3 in conjunction with fig. 4, fig. 4 is a perspective sectional view of a preferred embodiment of the pre-filter assembly of the present invention. As shown in fig. 3 to 4, a sound insulation outer cover 42 is mounted at the top of the connection ring 41, a filter cartridge 45 is arranged in the sound insulation outer cover 42, a gas inlet 44 is formed in the top of the sound insulation outer cover 42, external gas enters from the gas inlet 44, the entered gas exists between the filter cartridge 45 and the inner wall of the sound insulation outer cover 42, the gas entering into a cavity between the filter cartridge 45 and the inner wall of the sound insulation outer cover 42 passes through the filter cartridge 45 and enters into the gas inlet pipe 4 from the bottom inside the filter cartridge 45, particles in the gas can be retained outside the filter cartridge 45 at the moment, the filtered gas passes through the filter cartridge 45 and enters into the gas inlet pipe 4, a transparent strip 43 is arranged on the surface of the sound insulation outer cover 42, the transparent strip 43 is made of thickened acrylic material, and mainly functions to observe the accumulation amount of impurities accumulated on the surface of the filter cartridge 45 at any time so as to facilitate timely cleaning the filter cartridge 45 and replacing and overhauling the pre-filter assembly 40.

Please continue to refer to fig. 4. As shown in fig. 4, it should be further described that the soundproof housing 42 is composed of a rigid airtight metal shell and an inner side added sound absorbing material, specifically, the outer layer is usually made of a steel plate with a thickness of 1-2mm, the inner layer is coated with a damping layer such as damping paint, asphalt, etc., in order to prevent the anastomosis effect and the low frequency resonance of the steel plate, in order to improve the noise reduction effect, the inner layer is further coated with a layer of sound absorbing material such as glass wool and a micro-perforated plate, in order to further enhance the noise reduction effect, a spiral groove 47 is formed on the inner wall of the soundproof housing 42, after the external air enters from the air inlet 44, part of the air will impact the inner wall of the soundproof housing 42, the air moves along the concave direction of the spiral groove 47, so as to effectively reduce the direct and vertical impact of the air on the inner wall of the soundproof housing 42, and effectively reduce the noise generated during the impact of the air on the inner wall of the soundproof housing 42. Specifically, the spiral groove 47 has a first slope 471 and a second slope 472 corresponding to the first slope 471, the first slope 471 is inclined upward from the direction of the air inlet pipe 4 to the direction of the air inlet 44, the second slope 472 is inclined downward from the direction of the air inlet 44 to the direction of the air inlet pipe 4, the inner wall radius of the sound-insulating outer cover 42 is gradually increased from the air inlet 44 to the direction of the air inlet pipe 4, the main purpose of the design is to enable the gas which has just entered the spiral groove 47 to move along the first slope 471, and to be transferred to the second slope 472 in the continuous moving process, because the second slope 472 is inclined downward from the direction of the air inlet 44 to the direction of the air inlet pipe 4, the gas which is separated from the second slope 472 can pass through the filter cartridge 45 to achieve the filtering effect.

Please refer to fig. 4 in combination with fig. 5 to 6, fig. 5 is a schematic bottom view of a connection ring according to the present invention; fig. 6 is a schematic view of the cross-sectional structure of the rubber strip of the present invention. As shown in fig. 4 to 6, in order to enhance the sealing effect and avoid the air leakage effect of the gas during the air inlet process, a circular ring groove 46 is formed at the bottom of the connecting ring 41, a sealing structure 48 is embedded in the circular ring groove 46, and the bottom surface of the sealing structure 48 is abutted against the top surface of the flange plate at the end of the air inlet pipe 4. The sealing structure 48 includes a rubber strip 481, the rubber strip 481 is embedded in the circular groove 46, and compared with a whole wide rubber pad, the rubber strip 481 is coiled for several circles to realize the effect of multiple gas discharge blocking, and the bottom surface of the rubber strip 481 abuts against the top surface of the flange at the end of the gas inlet pipe 4. An arc surface 482 is arranged on one surface of the rubber strip 481 which is abutted against the top surface of the flange plate. A V-shaped groove 483 is formed in the arc-shaped surface 482, when the bottom surface of the rubber strip 481 is pressed by the V-shaped groove 483 formed in the arc-shaped surface 482, the two sides of the interior of the V-shaped groove 483 are inwards concave, and the arc-shaped surfaces 482 of the two half surfaces can be tightly attached to the flange plate.

To sum up, the beneficial effects of the utility model are that: through set up leading filtering component 40 on intake pipe 4, realized the filtering and got into the intake pipe 4 preceding particle impurity in the gas, effectively prevent particle impurity and enter into the pump body 1 in, and then reduce the efficiency of particle impurity wearing and tearing impeller, through setting up transparent strip 43, reduce the maintenance operation degree of difficulty, through setting up rubber strip 481 and time shape annular 46, the multiple effect that blocks gas leakage has been realized, it is airtight strong effectively to have strengthened, through setting up syllable-dividing dustcoat 42 and helicla flute 47, effectively reduce gaseous direct vertically impact to on the dustcoat 42 inner wall that gives sound insulation, have and then reduce the noise that gaseous impact dustcoat 42 inner wall in-process sent.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A vacuum pump body, characterized in that it comprises: the pump body (1), be provided with intake pipe (4) and outlet duct (5) on the pump body (1), be provided with leading filtering component (40) on intake pipe (4), leading filtering component (40) are including go-between (41), go-between (41) are fixed on intake pipe (4), sound insulation dustcoat (42) are installed to the top surface of go-between (41), it strains a section of thick bamboo (45) to be provided with in sound insulation dustcoat (42), air inlet (44) have been seted up at the top of sound insulation dustcoat (42), the surface of sound insulation dustcoat (42) is provided with transparent strip (43).

2. A vacuum pump body according to claim 1, wherein: the inner wall of the sound insulation outer cover (42) is provided with a spiral groove (47).

3. A vacuum pump body according to claim 2, wherein: the spiral groove (47) is provided with a first inclined surface (471) and a second inclined surface (472) corresponding to the first inclined surface (471), the first inclined surface (471) is arranged in a mode that the first inclined surface inclines upwards from the direction of the air inlet pipe (4) to the direction of the air inlet pipe (44), and the second inclined surface (472) is arranged in a mode that the second inclined surface inclines downwards from the direction of the air inlet pipe (44) to the direction of the air inlet pipe (4).

4. A vacuum pump body according to claim 1, wherein: the bottom of go-between (41) has been seted up back ring groove (46), it is embedded to be equipped with seal structure (48) to return ring groove (46), the bottom surface of seal structure (48) with the ring flange top surface of intake pipe (4) tip offsets.

5. A vacuum pump body according to claim 4, wherein: the sealing structure (48) comprises a rubber strip (481), and the bottom surface of the rubber strip (481) is abutted to the top surface of the flange plate at the end part of the air inlet pipe (4).

6. A vacuum pump body according to claim 5, wherein: an arc-shaped surface (482) is arranged on one surface of the rubber strip (481) which is abutted against the top surface of the flange plate.

7. A vacuum pump body as claimed in claim 6, wherein: the arc-shaped surface (482) is provided with a V-shaped groove (483).

8. A vacuum pump body as claimed in claim 1, wherein: the radius of the inner wall of the sound insulation outer cover (42) is gradually increased from the direction of the air inlet (44) to the direction of the air inlet pipe (4).