CN213574516U

CN213574516U - Noise reduction structure of vacuum pump

Info

Publication number: CN213574516U
Application number: CN202021109240.2U
Authority: CN
Inventors: 张达; 傅杰; 杜威; 汪斐; 吴青云
Original assignee: Ningbo Aifake Vacuum Technology Research Institute Co ltd; Ulvac Ningbo Co Ltd
Current assignee: Ningbo Aifake Vacuum Technology Research Institute Co ltd; Ulvac Ningbo Co Ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-06-29
Anticipated expiration: 2030-06-16

Abstract

The utility model relates to the technical field of vacuum pump noise reduction, and discloses a noise reduction structure of a vacuum pump, which comprises a plurality of limit screws fixed at a preset position, an elastic framework which is in a closed ring shape and is sleeved on the limit screws, and a strip-shaped noise insulation part which is in a guide sliding fit with the elastic framework, wherein the elastic material comprises a main beam, a secondary beam and an auxiliary beam, the elastic material is provided with a central hole and is provided with matching holes at even intervals along the axial direction, limiting bolts are inserted between the matching holes at the two ends of the main beam of the elastic material and the central hole of the secondary beam as well as between the matching holes of the secondary beam and the central hole of the auxiliary beam in an interference manner, the main beam, the secondary beam and the auxiliary beam are spliced and fixed by the limiting bolts, adjacent noise insulation parts are mutually abutted or spliced to form a noise insulation layer with the size and the shape consistent with the preset position, the noise reduction structure, the laying difficulty is reduced, the laying rate is improved, and the applicability is obviously improved.

Description

Noise reduction structure of vacuum pump

Technical Field

The utility model relates to a technical field that makes an uproar falls in the vacuum pump especially relates to a structure of making an uproar falls in vacuum pump.

Background

The vacuum pump refers to a device or equipment for obtaining vacuum by pumping a pumped container by using a mechanical, physical, chemical or physicochemical method. In general, a vacuum pump is a device for improving, generating and maintaining a vacuum in a certain closed space by various methods. Vacuum pumps can be basically classified into two types, i.e., a gas trap pump and a gas transfer pump, according to the operating principle of the vacuum pump. It is widely used in metallurgy, chemical industry, food, electronic coating and other industries.

Vacuum pump is in the use, and its noise mainly derives from the motor and the pump body to the noise is very big, causes environmental pollution easily, and the field work personnel receive the noise influence for a long time, can cause various irreversible injuries, and chinese patent publication No. CN209195634U discloses a vacuum pump silencing device, including the sound-proof housing, install on the base sound-proof housing bottom, the inside vacuum pump that is provided with of sound-proof housing, the vacuum pump bottom is provided with the support, the bearing mounting is on the mount pad, be provided with the shock pad between support and the mount pad, the mount pad passes through damper and sets up on the base, sound-proof housing inner wall and upper end all are provided with sound absorbing structure.

In the above patent, only the sound absorption structure made of a sound absorption material is disclosed, and the specific structure of the sound absorption structure and the connection relationship between the sound absorption structure and the sound-proof housing are not disclosed, and in the drawings in the specification, only the sound absorption structure can be seen as a layer structure, and vacuum pumps of different sizes have different shapes and sizes of the sound-proof housing outside the sound absorption structure due to different arrangements of a pump body and a motor, which causes the difference of the sizes of the required sound absorption structures, and the sizes of the sound absorption structures need to be designed separately for vacuum pumps of different models, resulting in the reduction of applicability; in addition, the existing fixing mode adopts a glue pasting mode, and glue is easy to age, so that the sound absorption structure falls off.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the shortcoming that prior art sound absorbing structure suitability is low and easily drops, provide a structure of making an uproar falls of vacuum pump, can be suitable for not making an uproar falling of unidimensional vacuum pump.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

a noise reduction structure of a vacuum pump comprises a plurality of limit screws fixed at preset positions, an elastic framework which is sleeved on the limit screws and is in a closed ring shape, and a strip-shaped sound insulation part which is in guide sliding fit with the elastic framework, wherein the elastic framework comprises main beams which are arranged in parallel, a secondary beam which is connected between the end parts of the two main beams, and a plurality of auxiliary beams which are arranged at uniform intervals along the length direction of the secondary beam, the sound insulation part is arranged on each main beam and each auxiliary beam, the main beams and the secondary beams are arranged in a detachable mode, the main beams and the auxiliary beams are made of elastic materials with the same size and shape, each elastic material is provided with a central hole which is penetrated through at two ends and a plurality of matching holes which are penetrated through along the axial direction of the elastic material, and limit bolts are inserted between the matching holes at two ends of the main beams and the matching holes at two ends of the secondary beams and the, the main beam, the secondary beam and the auxiliary beam are spliced and fixed through the limiting bolts, and the adjacent sound insulation parts are mutually abutted or spliced to form a sound insulation layer with the same size and shape as the preset position.

By adopting the scheme, the elastic materials can be produced in a unified manner, the size of the elastic materials is cut according to the outer shells of the vacuum pumps of different models, the elastic frameworks with required sizes and shapes can be formed only by splicing the elastic frameworks through the limiting bolts, the sound insulation parts are in strip shapes with the same size, and the lengths of the sound insulation parts are cut according to requirements, so that the mass production can be realized, the arrangement of noise reduction structures in areas with irregular shapes in the actual use process is met, the arrangement difficulty is reduced, and the arrangement rate is improved; and only need stop screw just can lay on the shell body, avoid the pollution problem and the problem that drops that glue brought.

Preferably, be provided with 3 cooperation pieces on every girder and auxiliary beam at least, the cooperation piece includes the guide ring that cup joints with girder or auxiliary beam and the slider of perpendicular outside protruding the establishing of the outer wall of self-guide ring, is provided with the spout that runs through to both ends and supply the slider embedding to slide the complex in the portion that gives sound insulation near one side of slider.

Adopt above-mentioned scheme, set up the cooperation piece more than 3 and can satisfy the fixed of puigging portion both ends and central point department, cooperation piece removes the setting, can adjust according to the demand, because elastic fixation is concatenation formation, operating personnel can select the number of cooperation piece to assemble according to length, and is very convenient.

Preferably, the slider has a cross-section of a "T" shape, or a "dovetail" shape, or an "I" shape.

By adopting the scheme, the shape can meet the requirement that the sound insulation part is fixedly connected with the elastic framework and is not easy to fall off automatically.

Preferably, the adjacent sound insulation portions are joined to each other, a groove is recessed in an upper end of the sound insulation portion, and a projection that engages with the groove in the upper end of the adjacent sound insulation portion extends downward from a lower end of the sound insulation portion.

By adopting the scheme, after the sound insulation parts are connected through splicing, the generation of empty areas can be reduced for some irregular areas, and the sound insulation effect is improved.

Preferably, a plurality of frustum-shaped noise reduction bulges with outward pointed ends are uniformly distributed on one side of the noise insulation part away from the elastic framework.

By adopting the scheme, the noise absorption can be improved by arranging the noise reduction protrusions, and the noise reduction effect is improved.

Preferably, the sound insulation portion has an arc-shaped sound insulation groove recessed on a side thereof adjacent to the elastic frame.

Adopt above-mentioned scheme, the sound insulation groove set up with forming the sound insulation region between sound insulation part and the shell body, further improve the effect of making an uproar.

The utility model discloses owing to adopted above technical scheme, have following technological effect: the structure of making an uproar falls by stop screw, elasticity skeleton and puigging constitute, the elasticity skeleton is tailor and is spliced and fix on the shell body through stop screw according to the shape and the size in the region of establishing, the puigging is the strip that the size is unanimous, only need carry on according to the demand length tailor can, the puigging forms even puigging with mutual concatenation fixed and adjacent puigging between the puigging each other of elasticity skeleton, the structure of making an uproar should fall can be produced in batches and satisfy the laying of the irregular regional structure of making an uproar that falls of some shapes in the in-service use process, reduce and lay the degree of difficulty, improve and lay the.

Drawings

FIG. 1 is a front view of a vacuum pump with a noise reduction structure of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is an isometric view of a noise reduction structure of the present invention;

FIG. 4 is a partially exploded view of the noise reducing structure of the present invention;

fig. 5 is an enlarged view of a in fig. 4.

The names of the parts indicated by the numerical references in the above figures are as follows: 1. an outer housing; 2. a pump body; 3. a motor; 4. a limit screw; 5. an elastic skeleton; 51. a secondary beam; 52. a main beam; 53. an auxiliary beam; 54. a mating hole; 55. a central bore; 6. a sound insulating section; 61. a sound deadening bulge; 62. a sound insulation groove; 63. a chute; 64. a groove; 65. a bump; 7. a limiting bolt; 8. a matching block; 81. a guide ring; 82. a slide block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Examples

The conventional vacuum pump is shown in fig. 1-2, and includes a motor 3, a pump body 2, and the main noise is derived from the air sucked by the pump body 2 and the sound generated by the rotation of the motor 3, so the motor 3 and the pump body 2 are generally placed inside an outer casing 1 (a sound-proof cover in the reference) as described in the reference, the bottom of the motor 3 and the pump body 2 is a movable base, the outer casing 1 is covered on the base and then fixed, and the noise reduction structure is disposed on the inner wall of the outer casing 1 and on the base.

Now disclose a structure of making an uproar falls of vacuum pump, refer to fig. 3-5 and show, including fixing a plurality of stop screw 4 in preset position department, cup joint and be closed annular elastic framework 5 on stop screw 4 and with elastic framework 5 direction cooperation of sliding and be banding noise-insulating part 6, one side equipartition that elastic framework 5 was kept away from to noise-insulating part 6 has the protruding 61 of the amortization of a plurality of pointed ends outwards frustum form, the one side recess that noise-insulating part 6 is close to elastic framework 5 has curved sound-insulating groove 62. The soundproof part 6 is made of soundproof material, the present embodiment adopts soundproof cotton, and is made of polyester fiber, the elastic framework 5 includes main beams 52 arranged in parallel, secondary beams 51 connected between the ends of the two main beams 52, and a plurality of secondary beams 53 arranged at regular intervals along the length direction of the secondary beams 51, the soundproof part 6 is arranged on each main beam 52 and each secondary beam 53, the main beams 52, the secondary beams 51 and the secondary beams 53 are detachable, the main beams 52, the secondary beams 51 and the secondary beams 53 are made of elastic material with the same size and shape, in the present embodiment, the elastic material is rubber, the elastic material has a center hole 55 through which both ends pass and a plurality of matching holes 54 through which the elastic material passes along the axial direction, the matching holes 54 at both ends of the main beam 52, the center holes 55 at both ends of the secondary beams 51, and the matching holes 54 of the secondary beams 51 and the center hole 55 of the auxiliary beams 53 are inserted with a limit bolt 7, the main beam 52, the auxiliary beam 51 and the auxiliary beam 53 are spliced and fixed through the limiting bolt 7, and the adjacent sound insulation parts 6 are mutually abutted or spliced to form a sound insulation layer with the size and the shape consistent with those of the preset position.

In above-mentioned setting, elastic material can be unified production, and carry out the tailorring of size according to the shell body 1 and the base size of the vacuum pump of different models, only need splice through spacing bolt 7 and can form the elastic framework 5 of required size and shape, sound-proof section 6 is the strip of size unanimity, only need carry out tailorring of length as required can, like this, can produce in batches, satisfy laying of some irregular regional noise reduction structures of shape in the in-service use, reduce and lay the degree of difficulty, improve and lay the rate.

In order to improve the firmness of the combination of the sound insulation part 6 and the elastic framework 5, at least 3 matching blocks 8 are arranged on each main beam 52 and each auxiliary beam 53, so as to ensure that at least two ends and the middle position of the sound insulation part 6 are fixedly connected with the main beams 52 and the auxiliary beams 53, the sound insulation part 6 is prevented from being protruded, each matching block 8 comprises a guide ring 81 sleeved with the main beam 52 or the auxiliary beam 53 and a sliding block 82 vertically and outwards protruded from the outer wall of the guide ring 81, one side of the sound insulation part 6, close to the sliding block 82, is provided with a sliding groove 63 which penetrates through to the two ends and is used for the sliding block 82 to be embedded and slidably matched, the cross section of the sliding block 82 is in a T shape, a dovetail shape or an I shape, and the firmness of the combination of the sound insulation.

In order to improve the combination between the adjacent sound insulation parts 6 and avoid the sound insulation parts 6 from deforming to form empty areas to cause noise leakage, the adjacent sound insulation parts 6 are spliced with each other, a groove 64 is recessed in the upper end of the sound insulation part 6, and a projection 65 matched with the groove 64 in the upper end of the adjacent sound insulation part 6 extends downwards from the lower end of the sound insulation part 6.

The structure of making an uproar falls of this scheme is by stop screw 4, elasticity skeleton 5 and puigging 6 are constituteed, elasticity skeleton 5 tailors and splices and fix on shell body 1 through stop screw 4 according to the shape and the size in the region of establishing, puigging 6 is the strip that the size is unanimous, only need carry on tailorring of length according to the demand can, puigging 6 splices each other with elasticity skeleton 5 fixed and adjacent puigging 6 between each other and forms even puigging, the structure of making an uproar should fall can be produced in batches and satisfy the laying of the structure of making an uproar falls in some irregular regions of shape in-service use, reduce and lay the degree of difficulty, improve and lay the rate and show.

Claims

1. A structure of making an uproar falls in vacuum pump which characterized in that: comprises a plurality of limit screws (4) fixed at preset positions, an elastic framework (5) which is sleeved on the limit screws (4) and is in a closed ring shape, and a strip-shaped sound insulation part (6) which is in guiding sliding fit with the elastic framework (5), wherein the elastic framework (5) comprises main beams (52) which are arranged in parallel, a secondary beam (51) which is connected between the end parts of the two main beams (52), and a plurality of auxiliary beams (53) which are arranged at uniform intervals along the length direction of the secondary beam (51), the sound insulation part (6) is arranged on each main beam (52) and each auxiliary beam (53), the main beams (52) and the secondary beams (51) and (53) can be detached, the main beams (52) and the secondary beams (51) and (53) are made of elastic materials with consistent sizes and shapes, the elastic materials are provided with central holes (55) which are penetrated through at two ends and a plurality of matching holes (54) which are penetrated and are arranged at uniform intervals along the axial direction, and limiting bolts (7) are inserted between the matching holes (54) at the two ends of the main beam (52) and the central holes (55) at the two ends of the secondary beam (51) and between the matching holes (54) of the secondary beam (51) and the central holes (55) of the auxiliary beam (53) in an interference manner, the main beam (52), the secondary beam (51) and the auxiliary beam (53) are spliced and fixed through the limiting bolts (7), and adjacent sound insulation parts (6) are mutually abutted or spliced to form a sound insulation layer with the size and the shape consistent with the preset position.

2. A noise reduction structure of a vacuum pump according to claim 1, wherein: every girder (52) and auxiliary beam (53) go up to be provided with 3 cooperation pieces (8) at least, cooperation piece (8) including with girder (52) or auxiliary beam (53) guide ring (81) that cup joint and from the perpendicular outside protruding slider (82) of establishing of the outer wall of guide ring (81), be provided with in the portion of giving sound insulation (6) one side that is close to slider (82) and run through to both ends and supply slider (82) embedding sliding fit's spout (63).

3. A noise reduction structure of a vacuum pump according to claim 2, wherein: the cross section of the sliding block (82) is T-shaped, dovetail-shaped or I-shaped.

4. A noise reduction structure of a vacuum pump according to claim 1, wherein: the adjacent sound insulation parts (6) are spliced with each other, a groove (64) is sunken in the upper end of each sound insulation part (6), and a lug (65) matched with the groove (64) in the upper end of the adjacent sound insulation part (6) extends downwards from the lower end of each sound insulation part (6).

5. A noise reduction structure of a vacuum pump according to claim 1, wherein: one side of the sound insulation part (6) far away from the elastic framework (5) is evenly provided with a plurality of frustum-shaped noise reduction bulges (61) with outward pointed ends.

6. A noise reducing structure of a vacuum pump according to claim 5, wherein: one side of the sound insulation part (6) close to the elastic framework (5) is provided with an arc-shaped sound insulation groove (62) in a concave mode.