CN114593038A - Novel silencer for multistage dry vacuum pump - Google Patents
Novel silencer for multistage dry vacuum pump Download PDFInfo
- Publication number
- CN114593038A CN114593038A CN202011431400.XA CN202011431400A CN114593038A CN 114593038 A CN114593038 A CN 114593038A CN 202011431400 A CN202011431400 A CN 202011431400A CN 114593038 A CN114593038 A CN 114593038A
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- space
- air inlet
- vacuum pump
- pipe
- cylindrical component
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000003584 silencer Effects 0.000 title claims abstract description 31
- 230000001681 protective effect Effects 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims description 32
- 238000007789 sealing Methods 0.000 claims description 26
- 238000003466 welding Methods 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
- F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/14—Provisions for readily assembling or disassembling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention belongs to the field of vacuum pumps, and particularly relates to a novel silencer for a multistage dry vacuum pump. The cylindrical part, the air inlet pipe, the exhaust pipe and the communicating pipe are matched, so that gas exhausted by the vacuum pump can flow along a complex channel in the silencer, and the energy of the gas is consumed in the reciprocating flow process in a path, so that the aim of reducing noise of the silencer is fulfilled; through the arrangement of the protective cover, the silencer can be effectively protected from being damaged by the outside, and the requirements that field operators do not directly contact with the main cylinder of the cylindrical component and can be safely disassembled can be met.
Description
Technical Field
The invention belongs to the field of vacuum pumps, and particularly relates to a novel silencer for a multistage dry vacuum pump.
Background
The silencer is connected to the tail exhaust position of the multi-stage dry type vacuum pump, and noise generated by exhaust of the vacuum pump is effectively reduced. At present, the silencer applied to the multistage dry vacuum pump adopts a ball valve structure, and the material of the ball is mostly rubber material. Although the valve ball made of rubber is inert to almost all chemical substances and has the comprehensive characteristics of small friction coefficient, stable performance, difficult aging, wide temperature application range and excellent sealing performance, the physical characteristics of the valve ball, including higher expansion coefficient, sensitivity to cold flow and poor heat conductivity, require that the design of the valve seat seal is carried out around the characteristics, so that the silencer of the multistage dry vacuum pump has low reliability and the silencing effect is easily influenced.
Disclosure of Invention
In view of the above-mentioned problem of poor reliability of the conventional silencer, an object of the present invention is to provide a novel silencer for a multistage dry vacuum pump.
The purpose of the invention is realized by the following technical scheme:
a novel silencer for a multistage dry vacuum pump comprises a cylindrical component, wherein a partition plate is arranged inside the cylindrical component, one end face of the cylindrical component is provided with an air inlet port, the other end face of the cylindrical component is provided with an air outlet port, the partition plate is arranged in the middle of an inner cavity of the cylindrical component along the cross section of the cylindrical component and divides the inner cavity of the cylindrical component into two spaces, the space close to the air inlet port is a space A, the space close to the air outlet port is a space B, and the partition plate is provided with a communicating pipe for communicating the space A with the space B;
an air inlet pipe is arranged on the air inlet port, one end of the air inlet pipe is arranged on the outer side of the cylindrical component, and the other end of the air inlet pipe penetrates through the partition board in the inner cavity of the cylindrical component and extends into the space B;
an exhaust pipe is arranged on the exhaust port, one end of the exhaust pipe is arranged on the outer side of the cylindrical component, and the other end of the exhaust pipe penetrates through the partition board in the inner cavity of the cylindrical component and extends into the space A;
gas is supplied from the gas supply pipe to the space B, flows from the space B to the space a through the communication pipe, and finally flows out of the cylindrical member from the space a through the gas discharge pipe.
The air inlet pipe is arranged at one end of the outer side of the cylindrical part and is provided with an air inlet pipe connecting flange.
And an exhaust pipe connecting flange is arranged at one end of the exhaust pipe arranged on the outer side of the cylindrical component.
The cylindrical part comprises a main cylinder with one open end and a sealing cover for sealing the opening of the main cylinder;
the air inlet port is arranged on the bottom end face of the main body cylinder, the air outlet port is arranged on the sealing cover, a sealing cover connecting flange is arranged at the opening of the main body cylinder, and the sealing cover is connected with the sealing cover connecting flange through screws.
And a sealing element is also arranged on the joint surface of the sealing cover connecting flange and the sealing cover.
And a protective cover is arranged on the outer side of the main body cylinder.
The welding has connecting screw on the outside terminal surface of closing cap, be equipped with the engaging lug on the safety cover, the engaging lug passes through coupling nut to be fixed on the connecting screw.
The protective cover is provided with heat dissipation holes.
The baffle includes inside and outside nested outer baffle and inlayer baffle, the outer peripheral face of outer baffle with main part drum inner wall welding, the intake pipe with the bottom terminal surface welding of main part drum is in the same place, just the intake pipe passes outer baffle and with outer baffle welding is in the same place, inlayer baffle embedding the inside of outer baffle, communicating pipe with the blast pipe passes respectively inlayer baffle and with inlayer baffle welding is in the same place, the blast pipe with the closing cap welding is in the same place.
The invention has the advantages and positive effects that:
1. according to the invention, through the matching arrangement of the cylindrical component with the partition plate arranged inside, the air inlet pipe, the exhaust pipe and the communicating pipe, the same performance as that of a silencer with a ball valve structure can be realized, and meanwhile, the ball valve structure is not included, so that the condition that the sealing reliability similar to a ball valve is damaged does not exist, and the reliability is high;
2. the invention has simple structure, and the key structure can be manufactured in a welding mode; meanwhile, the length of the path of the internal exhaust channel can be adjusted according to the type of the connected vacuum pump, so that the most adaptive silencer can be completed;
3. the invention adopts the stainless steel protective cover, which can effectively protect the silencer from being damaged by the outside; meanwhile, the silencer has high heat due to the heat conduction effect of the exhaust gas, and the silencer cannot be disassembled by field operators, so that the requirements that the field operators do not directly contact with the main cylinder of the cylindrical component and can be safely disassembled can be met after the protective cover is installed.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention with the protective cover removed;
FIG. 2 is a schematic cross-sectional view of the present invention with the protective cover removed;
FIG. 3 is a schematic view of the external structure of the present invention with the protective cover removed;
fig. 4 is a schematic view of the external structure of the present invention after the protective cover is installed.
In the figure: 1-cylindrical part, 101-main body cylinder, 1011-cover connecting flange, 102-cover, 1021-connecting screw, 2-partition, 201-outer partition, 202-inner partition, 3-communicating pipe, 4-air inlet pipe, 401-air inlet pipe connecting flange, 5-exhaust pipe, 501-exhaust pipe connecting flange, 6-screw, 7-sealing piece, 8-protective cover, 801-connecting lug, 802-heat dissipation hole, 9-connecting nut, 001-space A and 002-space B.
Detailed Description
The invention is described in further detail below with reference to figures 1-4.
A novel silencer for a multistage dry vacuum pump is shown in figures 1-3 and comprises a cylindrical component 1 with a partition plate 2 inside, wherein one end face of the cylindrical component 1 is provided with an air inlet port, the other end face of the cylindrical component 1 is provided with an air outlet port, the partition plate 2 is arranged in the middle of an inner cavity of the cylindrical component 1 along the cross section of the cylindrical component 1, the inner cavity of the cylindrical component 1 is divided into two spaces by the partition plate 2, the space close to the air inlet port is a space A001, the space close to the air outlet port is a space B002, and the partition plate 2 is provided with a communicating pipe 3 for communicating the space A001 with the space B002;
an air inlet pipe 4 is arranged on the air inlet port, one end of the air inlet pipe 4 is arranged on the outer side of the cylindrical component 1, and the other end of the air inlet pipe 4 penetrates through the partition plate 2 in the inner cavity of the cylindrical component 1 and extends into the space B002;
an exhaust pipe 5 is arranged on the exhaust port, one end of the exhaust pipe 5 is arranged outside the cylindrical component 1, and the other end of the exhaust pipe 5 penetrates through the partition plate 2 in the inner cavity of the cylindrical component 1 and extends into the space A001;
the gas is supplied from the gas supply pipe 4 to the space B002, flows from the space B002 to the space a 001 through the communication pipe 3, and finally flows out of the cylindrical member 1 from the space a 001 through the gas discharge pipe 5. The pipe diameters of the communicating pipe 3, the air inlet pipe 4 and the exhaust pipe 5 are not less than 18mm in the embodiment, and the lengths are not less than 25 mm.
The intake pipe 4 establishes one in the outside of tube-shape part 1 and serves and be equipped with intake pipe connection flange 401, conveniently connects the vacuum pump output, intake pipe connection flange 401 and intake pipe 4 welded connection in this embodiment.
The exhaust pipe 5 is provided with an exhaust pipe connecting flange 501 at one end of the outer side of the tubular member 1, so as to facilitate connection of a subsequent exhaust pipeline, wherein the exhaust pipe connecting flange 501 is welded with the exhaust pipe 5 in the embodiment.
The cylindrical part 1 in the embodiment comprises a main body cylinder 101 with one open end and a cover 102 for closing the opening of the main body cylinder 101, wherein the bottom end surface of the outer side of the main body cylinder 101 and the outer surface of the cover 102 are respectively provided with a use mark; the air inlet port is arranged on the bottom end face of the main body cylinder 101, the air outlet port is arranged on the cover 102, a cover connecting flange 1011 is arranged at the opening of the main body cylinder 101, the main body cylinder 101 is connected with the cover connecting flange 1011 through welding, and the cover 102 is connected with the cover connecting flange 1011 through a screw 6; the separator 2 comprises an outer separator 201 and an inner separator 202 which are nested inside and outside, the outer peripheral surface of the outer separator 201 is welded with the inner wall of the main body cylinder 101, the air inlet pipe 4 penetrates through the outer separator 201 and is welded with the outer separator 201, the air inlet pipe 4 is welded with the bottom end surface of the main body cylinder 101, the inner separator 202 is embedded into the outer separator 201, the communicating pipe 3 and the exhaust pipe 5 respectively penetrate through the inner separator 202 and are welded with the inner separator 202, and the exhaust pipe 5 is welded with the sealing cover 102. The cover 102, the exhaust pipe 5, the inner partition 202 and the communication pipe 5 can be taken out together by removing the screws 8, so that the maintenance and the cleaning are convenient.
The sealing member 7 is further disposed on the joint surface of the cover connecting flange 1011 and the cover 102, and in this embodiment, the sealing member 7 is an O-ring made of an elastic material, and plays a role in sealing.
As shown in fig. 4, a protective cover 8 is provided on the outer side of the main body cylinder 101 to protect the inner cylindrical member 1 and to prevent a worker from directly contacting the cylindrical member 1 having a high temperature in an operating state; the outer end face of the sealing cover 102 is welded with a connecting screw 1021, the protective cover 8 is provided with a connecting lug 801, and the connecting lug 801 is fixed on the connecting screw 1021 through a connecting nut 9, so that a worker can take down the protective cover 8 and the sealing cover 102 together without directly contacting with the main cylinder 101; the protective cover 8 is provided with heat dissipation holes 802, the heat dissipation holes 8 are uniformly distributed in the embodiment, and the area of each heat dissipation hole 8 is not less than 60mm2And the function of heat dissipation is achieved. In this embodiment, the protective cover 8 is made of stainless steel.
The working principle is as follows:
the gas is discharged from the vacuum pump and the tail exhaust part, is input into the space B002 from the gas inlet pipe 4, flows to the space A001 from the space B002 through the communicating pipe 3, and finally flows out of the cylindrical part 1 from the space A001 through the exhaust pipe 5; in the whole process, gas with high energy enters the silencer, flows along the inner channel of the silencer, and consumes the energy of the gas in the reciprocating flow process in the path, so that the purpose of noise reduction of the silencer is achieved.
Claims (9)
1. A novel silencer for a multi-stage dry vacuum pump, comprising: the exhaust device comprises a cylindrical component (1) with a partition plate (2) arranged inside, wherein an air inlet port is formed in one end face of the cylindrical component (1), an exhaust port is formed in the other end face of the cylindrical component (1), the partition plate (2) is arranged in the middle of an inner cavity of the cylindrical component (1) along the cross section of the cylindrical component (1), the inner cavity of the cylindrical component (1) is divided into two spaces by the partition plate (2), the space close to the air inlet port is a space A (001), the space close to the exhaust port is a space B (002), and a communicating pipe (3) communicating the space A (001) with the space B (002) is arranged on the partition plate (2);
an air inlet pipe (4) is arranged on the air inlet port, one end of the air inlet pipe (4) is arranged on the outer side of the cylindrical component (1), and the other end of the air inlet pipe (4) penetrates through the partition plate (2) in the inner cavity of the cylindrical component (1) and extends into the space B (002);
an exhaust pipe (5) is arranged on the exhaust port, one end of the exhaust pipe (5) is arranged outside the cylindrical component (1), and the other end of the exhaust pipe (5) penetrates through the partition plate (2) in the inner cavity of the cylindrical component (1) and extends into the space A (001);
gas is input into the space B (002) from the gas inlet pipe (4), flows into the space A (001) from the space B (002) through the communicating pipe (3), and finally flows out of the cylindrical part (1) from the space A (001) through the gas outlet pipe (5).
2. The novel silencer for a multi-stage dry vacuum pump as claimed in claim 1, wherein: the air inlet pipe (4) is arranged at one end of the outer side of the cylindrical part (1) and is provided with an air inlet pipe connecting flange (401).
3. The novel silencer for a multi-stage dry vacuum pump as claimed in claim 1, wherein: an exhaust pipe connecting flange (501) is arranged at one end of the exhaust pipe (5) arranged on the outer side of the cylindrical component (1).
4. The novel silencer for a multi-stage dry vacuum pump as claimed in claim 1, wherein: the cylindrical part (1) comprises a main cylinder (101) with one open end and a cover (102) for closing the opening of the main cylinder (101);
the air inlet port is formed in the bottom end face of the main body cylinder (101), the air outlet port is formed in the sealing cover (102), a sealing cover connecting flange (1011) is arranged at the opening of the main body cylinder (101), and the sealing cover (102) is connected with the sealing cover connecting flange (1011) through a screw (6).
5. The novel silencer for a multi-stage dry vacuum pump of claim 4, wherein: and a sealing element (7) is also arranged on the joint surface of the sealing cover connecting flange (1011) and the sealing cover (102).
6. The novel silencer for a multi-stage dry vacuum pump of claim 4, wherein: the outer side of the main body cylinder (101) is provided with a protective cover (8).
7. The novel silencer for a multi-stage dry vacuum pump of claim 6, wherein: the welding has connecting screw (1021) on the outside terminal surface of closing cap (102), be equipped with engaging lug (801) on safety cover (8), engaging lug (801) are fixed through coupling nut (9) on connecting screw (1021).
8. The novel silencer for a multi-stage dry vacuum pump of claim 6, wherein: the protective cover (8) is provided with heat dissipation holes (802).
9. The novel silencer for a multi-stage dry vacuum pump of claim 4, wherein: the partition board (2) comprises an outer partition board (201) and an inner partition board (202) which are nested inside and outside, the outer peripheral face of the outer partition board (201) is welded with the inner wall of the main body cylinder (101), the air inlet pipe (4) is welded with the bottom end face of the main body cylinder (101), the air inlet pipe (4) penetrates through the outer partition board (201) and is welded with the outer partition board (201), the inner partition board (202) is embedded into the outer partition board (201), the communicating pipe (3) and the exhaust pipe (5) penetrate through the inner partition board (202) respectively and are welded with the inner partition board (202), and the exhaust pipe (5) and the sealing cover (102) are welded together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011431400.XA CN114593038A (en) | 2020-12-07 | 2020-12-07 | Novel silencer for multistage dry vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011431400.XA CN114593038A (en) | 2020-12-07 | 2020-12-07 | Novel silencer for multistage dry vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114593038A true CN114593038A (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011431400.XA Pending CN114593038A (en) | 2020-12-07 | 2020-12-07 | Novel silencer for multistage dry vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114593038A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345587A (en) * | 2023-10-26 | 2024-01-05 | 南通柯瑞特机械制造有限公司 | Surge muffler device for vacuum pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4930597A (en) * | 1989-04-07 | 1990-06-05 | Arvin Industries, Inc. | Noise attenuation apparatus |
| CN2441980Y (en) * | 2000-08-04 | 2001-08-08 | 毛毳 | Engine silencer with silencing material on end cover |
| CN204283558U (en) * | 2014-12-11 | 2015-04-22 | 安徽江淮汽车股份有限公司 | A kind of exhaust silencer composition |
| CN204283577U (en) * | 2014-08-21 | 2015-04-22 | 徐州重型机械有限公司 | A kind of vent systems of motor and hoist |
| CN105781698A (en) * | 2014-12-22 | 2016-07-20 | 潼南县佳禾机械种植专业合作社 | Silencer |
| CN205955798U (en) * | 2016-08-27 | 2017-02-15 | 安徽合力股份有限公司 | A tail gas silencer for joining in marriage three way catalyst converter's combustion forklifts |
| CN109973190A (en) * | 2019-04-18 | 2019-07-05 | 重庆隆鑫机车有限公司 | Double broadband muffler |
-
2020
- 2020-12-07 CN CN202011431400.XA patent/CN114593038A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4930597A (en) * | 1989-04-07 | 1990-06-05 | Arvin Industries, Inc. | Noise attenuation apparatus |
| CN2441980Y (en) * | 2000-08-04 | 2001-08-08 | 毛毳 | Engine silencer with silencing material on end cover |
| CN204283577U (en) * | 2014-08-21 | 2015-04-22 | 徐州重型机械有限公司 | A kind of vent systems of motor and hoist |
| CN204283558U (en) * | 2014-12-11 | 2015-04-22 | 安徽江淮汽车股份有限公司 | A kind of exhaust silencer composition |
| CN105781698A (en) * | 2014-12-22 | 2016-07-20 | 潼南县佳禾机械种植专业合作社 | Silencer |
| CN205955798U (en) * | 2016-08-27 | 2017-02-15 | 安徽合力股份有限公司 | A tail gas silencer for joining in marriage three way catalyst converter's combustion forklifts |
| CN109973190A (en) * | 2019-04-18 | 2019-07-05 | 重庆隆鑫机车有限公司 | Double broadband muffler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345587A (en) * | 2023-10-26 | 2024-01-05 | 南通柯瑞特机械制造有限公司 | Surge muffler device for vacuum pump |
| CN117345587B (en) * | 2023-10-26 | 2024-05-24 | 南通柯瑞特机械制造有限公司 | Surge muffler device for vacuum pump |
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| PB01 | Publication | ||
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Application publication date: 20220607 |