CN108953155A - Lobe pump front and rear cover cooling structure - Google Patents
Lobe pump front and rear cover cooling structure Download PDFInfo
- Publication number
- CN108953155A CN108953155A CN201811109267.9A CN201811109267A CN108953155A CN 108953155 A CN108953155 A CN 108953155A CN 201811109267 A CN201811109267 A CN 201811109267A CN 108953155 A CN108953155 A CN 108953155A
- Authority
- CN
- China
- Prior art keywords
- cooling
- water
- cover
- cover plate
- bearing bracket
- Prior art date
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 117
- 239000000498 cooling water Substances 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000000465 moulding Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 9
- 239000010687 lubricating oil Substances 0.000 description 5
- 239000004519 grease Substances 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0092—Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses lobe pump front and rear cover cooling structures, are related to Roots's pump technical field.The present invention includes the drive end bearing bracket for being mounted on pump housing one end and the rear end cap for being mounted on the pump housing other end, and drive end bearing bracket is equipped with front end cover cavity；Drive end bearing bracket intracavity sidewall bottom is equipped with oil discharge outlet；Rear end cap is equipped with rear end cover cavity, and the drive end bearing bracket bottom on the downside of oil discharge outlet is provided with the first cooling trough；Drive end bearing bracket one side is equipped with the first cooling water outlet pipe；First cooling trough end face of drive end bearing bracket bottom is provided with front cover water-cooling cover plate mounting plane；Front cover water-cooling cover plate mounting plane is fixed with front cover water-cooling cover plate by screw；One surface of front cover water-cooling cover plate is provided with the first cooling water intake.The present invention passes through the storage chamber that the drive end bearing bracket designed and rear end cap are used to cool down using one-pass molding in internal setting, increases the structural strength of cooling pipeline, solves the problems, such as that existing rupture using the easy coil pipe of cooling coil causes equipment to damage.
Description
Technical field
The invention belongs to Roots's pump technical fields, more particularly to lobe pump front and rear cover cooling structure.
Background technique
Roots vaccum pump, which refers to, pumps the built-in lobed rotor there are two opposite direction synchronous rotary, between rotor, rotor and pump
There is slight gap between shell inner wall and a kind of non-touching positive displacement vacuum pump.In existing pump, the exhausted big portion that uses in the market
Dividing all is lubricating oil that cooling water coil comes in cooling oil chamber.And some producers use central water supply, hydraulic pressure reaches 8 public affairs
Jin or more, and the pressure of cooling coil is generally limited to 3-4 kilograms, causes disk after entering after cooling coil so as to cause cooling water
Pipe is ruptured by incessantly pressure, to cause emulsification of lubricant, ultimately causes equipment damage.
Summary of the invention
The purpose of the present invention is to provide lobe pump front and rear cover cooling structures, are adopted by the drive end bearing bracket and rear end cap of design
Storage chamber with one-pass molding in internal setting for cooling, increases the structural strength of cooling pipeline, solves existing use
Cooling coil is easy the problem of coil pipe rupture causes equipment to damage.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions:
The present invention is lobe pump front and rear cover cooling structure, including being mounted on the drive end bearing bracket of pump housing one end and being mounted on the pump housing
The rear end cap of the other end, the drive end bearing bracket are equipped with front end cover cavity；Drive end bearing bracket intracavity sidewall bottom is equipped with oil discharge outlet；It is described
Rear end cap is equipped with rear end cover cavity, and the drive end bearing bracket bottom on the downside of the oil discharge outlet is provided with the first cooling trough；The drive end bearing bracket one
Side is equipped with the first cooling water outlet pipe；First cooling trough end face of the drive end bearing bracket bottom is provided with the installation of front cover water-cooling cover plate
Plane；The front cover water-cooling cover plate mounting plane is fixed with front cover water-cooling cover plate by screw；One table of front cover water-cooling cover plate
Face is provided with the first cooling water intake；The drive end bearing bracket one-pass molding；The rear end cap end face of rear end cover cavity side is provided with
Second cooling trough；Rear end cap one side on the downside of the rear end cover cavity is provided with third cooling trough；The rear end cap side
Face is provided with link slot；Second cooling trough is connected to third cooling trough by link slot；The rear end cap bottom is equipped with
First cooling water inlet pipe；First cooling water inlet pipe is connected to third cooling trough；The second of the rear end cap side
Cooling trough and the same end face of third cooling trough are provided with rear cover water-cooling cover plate mounting plane；The rear cover water-cooling cover plate installation is flat
Face is fixed with rear cover water-cooling cover plate by screw；One surface of rear cover water-cooling cover plate is provided with the first cooling water outlet；It is described
Third cooling trough is penetrating through below entire rear end cover cavity, third cooling trough open end and the second cooling trough open end
In the same side of rear end cap；The rear end cap one-pass molding.
Further, the front cover water-cooling cover plate is rectangular configuration；First cooling water intake is arranged in lid water cooling
Cover plate central.
Further, one surface of rear cover water-cooling cover plate is provided with the first groove；First groove and the second cooling water
Slot one end is corresponding；The same surface of rear cover water-cooling cover plate is provided with the second groove；Second groove and third cooling trough one
End corresponds to；First cooling water outlet is close to first groove one end.
The invention has the following advantages:
1, the present invention is integrally formed the structural strength for increasing cooling aqueduct by the drive end bearing bracket and rear end cap of design,
Increase the safety of water flowing cooling, improves service life of equipment, it is convenient to cold with front cover water-cooling cover plate and the cooperation of rear cover water-cooling cover plate
But sink is cleared up.
2, the present invention passes through the drive end bearing bracket of design and the cooling water cavity of rear end cap in oil pocket lower part, so that heat exchange is more
It is smooth, the lubricating oil in oil pocket can be made preferably to keep lower temperature, to extend the service life of lubricating oil.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will be described below to embodiment required
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the main view of drive end bearing bracket；
Fig. 2 is the cross-sectional view in Fig. 1 at A-A；
Fig. 3 is the backsight partial sectional view of drive end bearing bracket；
Fig. 4 is the view of A direction in Fig. 3；
Fig. 5 is the main view of front cover water-cooling cover plate；
Fig. 6 is the main view of rear end cap；
Fig. 7 is the cross-sectional view in Fig. 6 at B-B；
Fig. 8 is the main view of rear cover water-cooling cover plate；
Fig. 9 is that drive end bearing bracket and rear end cap are mounted on the structural schematic diagram on the pump housing；
In attached drawing, parts list represented by the reference numerals are as follows:
1- drive end bearing bracket, 2- front cover water-cooling cover plate, 3- rear end cap, 4- rear cover water-cooling cover plate, the front end 101- cover cavity, 102- row
Hydraulic fluid port, the first cooling trough of 103-, the first cooling water outlet pipe of 104-, 105- front cover water-cooling cover plate mounting plane, 201- first
Cooling water intake, the second cooling trough of 301-, 302- third cooling trough, 303- link slot, 304- rear cover water-cooling cover plate peace
Dress plane, the first cooling water inlet pipe of 305-, the rear end 306- cover cavity, the first cooling water outlet of 401-, the first groove of 402-,
The second groove of 403-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
It please refers to shown in Fig. 1-8, the present invention is lobe pump front and rear cover cooling structure, before being mounted on pump housing one end
End cap 1 and the rear end cap 3 for being mounted on the pump housing other end, drive end bearing bracket 1 are equipped with front end cover cavity 101；101 side wall bottom of front end cover cavity
Portion is equipped with oil discharge outlet 102；Rear end cap 3 is equipped with rear end cover cavity 306, and it is cold that 1 bottom of drive end bearing bracket of 102 downside of oil discharge outlet is provided with first
But sink 103；1 one side of drive end bearing bracket is equipped with the first cooling water outlet pipe 104；103 end of the first cooling trough of 1 bottom of drive end bearing bracket
Face is provided with front cover water-cooling cover plate mounting plane 105；Front cover water-cooling cover plate mounting plane 105 is fixed with front cover water cooling lid by screw
Plate 2；2 one surface of front cover water-cooling cover plate is provided with the first cooling water intake 201；Cooling water passes through the on front cover water-cooling cover plate 2
One cooling water intake 201 enters the first cooling trough 103, and the heat that machine envelope and the pump housing generate is transmitted to front end by lubricating grease
On lid 1, logical heat transfer exchanges heat to cooling water, and cooling water temperature is discharged after increasing through the first cooling water outlet pipe 104,
It is recycled by water and takes heat out of, reduce the temperature of lubricating grease, ensure the normal operation of machine envelope, the cooling water tank that inside opens up,
Increasing allows to allow the hydraulic pressure by water flow by the hydraulic pressure increase of water flow, cools down more safe and reliable than coil pipe；
3 end face of rear end cap of 306 side of rear end cover cavity is provided with the second cooling trough 301；306 downside of rear end cover cavity
3 one side of rear end cap is provided with third cooling trough 302；3 one side of rear end cap is provided with link slot 303；Second cooling trough 301 with
Third cooling trough 302 is connected to by link slot 303；3 bottom of rear end cap is equipped with the first cooling water inlet pipe 305；First is cooling
Water water inlet pipe 305 is connected to third cooling trough 302；The second cooling trough 301 and third cooling trough of 3 side of rear end cap
302 same end faces are provided with rear cover water-cooling cover plate mounting plane 304；Rear cover water-cooling cover plate mounting plane 304 is fixed with by screw
Rear cover water-cooling cover plate 4；4 one surface of rear cover water-cooling cover plate is provided with the first cooling water outlet 401；Third cooling trough 302 is passing through
Lead to below entire rear end cover cavity 306,302 open end of third cooling trough and 301 open end of the second cooling trough are in rear end
The same side of lid 3；Cooling water enters third cooling trough 302 by the first cooling water inlet pipe 305, enters through link slot 303
The heat that second cooling trough 301, machine envelope and the pump housing generate is transmitted on rear end cap 3 by lubricating grease, and leading to heat transfer will be hot
To cooling water, cooling water temperature is discharged after increasing through the first cooling water outlet 401 for amount exchange, is recycled by water by heat band
Out, the temperature of lubricating grease is reduced, ensures the normal operation of machine envelope, using cooling water tank is directly opened up on rear end cap 3, increases and permits
Perhaps by the hydraulic pressure of water flow, cool down more safe and reliable than coil pipe；Since cooling water cavity is in oil pocket lower part, so that heat exchange is more
It is smooth, the lubricating oil in oil pocket can be made preferably to keep lower temperature, to extend the service life of lubricating oil.
Wherein, front cover water-cooling cover plate 2 is rectangular configuration；First cooling water intake 201 is arranged in lid water-cooling cover plate 2
The heart.
Wherein, 4 one surface of rear cover water-cooling cover plate is provided with the first groove 402；First groove 402 and the second cooling trough 301
One end is corresponding；The same surface of rear cover water-cooling cover plate 4 is provided with the second groove 403；Second groove 403 and third cooling trough 302 1
End corresponds to；First cooling water outlet 401 forms S-shaped circuit close to 402 one end of the first groove, improves cooling efficiency.
Wherein as shown in figure 9, drive end bearing bracket 1, rear end cap 3, front cover water-cooling cover plate 2 and rear cover water-cooling cover plate 4 are mounted on pump
It accesses higher hydraulic pressure on body to cool down to the machine envelope of two axial ends, cool down highly effective and safe.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (3)
1. lobe pump front and rear cover cooling structure, including being mounted on the drive end bearing bracket (1) of pump housing one end and being mounted on the pump housing other end
Rear end cap (3), the drive end bearing bracket (1) be equipped with front end cover cavity (101)；Front end cover cavity (101) sidewall bottom is equipped with
Oil discharge outlet (102)；The rear end cap (3) is equipped with rear end cover cavity (306), it is characterised in that: on the downside of the oil discharge outlet (102)
Drive end bearing bracket (1) bottom is provided with the first cooling trough (103)；Drive end bearing bracket (1) one side is equipped with the first cooling water outlet pipe
(104)；The first cooling trough (103) end face of drive end bearing bracket (1) bottom is provided with front cover water-cooling cover plate mounting plane (105)；
The front cover water-cooling cover plate mounting plane (105) is fixed with front cover water-cooling cover plate (2) by screw；The front cover water-cooling cover plate
(2) one surfaces are provided with the first cooling water intake (201)；
Rear end cap (3) end face of rear end cover cavity (306) side is provided with the second cooling trough (301)；In the rear end cap
Rear end cap (3) one side on the downside of chamber (306) is provided with third cooling trough (302)；Rear end cap (3) one side is provided with connection
Slot (303)；Second cooling trough (301) is connected to third cooling trough (302) by link slot (303)；The rear end
It covers (3) bottom and is equipped with the first cooling water inlet pipe (305)；First cooling water inlet pipe (305) and third cooling trough
(302) it is connected to；The second cooling trough (301) of rear end cap (3) side is provided with third cooling trough (302) same end face
Rear cover water-cooling cover plate mounting plane (304)；The rear cover water-cooling cover plate mounting plane (304) is fixed with rear cover water cooling by screw
Cover board (4)；(4) one surface of rear cover water-cooling cover plate is provided with the first cooling water outlet (401).
2. lobe pump front and rear cover cooling structure according to claim 1, which is characterized in that the front cover water-cooling cover plate
It (2) is rectangular configuration；First cooling water intake (201) is arranged at lid water-cooling cover plate (2) center.
3. lobe pump front and rear cover cooling structure according to claim 1, which is characterized in that the rear cover water-cooling cover plate
(4) one surfaces are provided with the first groove (402)；First groove (402) and the second cooling trough (301) one end fits；It is described
Rear cover water-cooling cover plate (4) same surface is provided with the second groove (403)；Second groove (403) and third cooling trough (302)
One end fits；First cooling water outlet (401) is arranged in the first groove (402) one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811109267.9A CN108953155B (en) | 2018-09-21 | 2018-09-21 | Cooling structure for front end cover and rear end cover of Roots pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811109267.9A CN108953155B (en) | 2018-09-21 | 2018-09-21 | Cooling structure for front end cover and rear end cover of Roots pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108953155A true CN108953155A (en) | 2018-12-07 |
| CN108953155B CN108953155B (en) | 2024-05-10 |
Family
ID=64471672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811109267.9A Active CN108953155B (en) | 2018-09-21 | 2018-09-21 | Cooling structure for front end cover and rear end cover of Roots pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108953155B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2625606Y (en) * | 2003-06-04 | 2004-07-14 | 上海萃曼真空机电制造有限公司 | Cooling structure for Root's vacuum pump |
| CN202867218U (en) * | 2012-10-18 | 2013-04-10 | 江阴天田真空设备制造有限公司 | Roots vacuum pump with magnetic transmission gear |
| CN103062063A (en) * | 2013-01-19 | 2013-04-24 | 上海零澜机械科技有限公司 | Convection and fully-cooled type end cover structure for novel roots pump |
| CN207598584U (en) * | 2017-11-20 | 2018-07-10 | 江阴天田真空设备制造有限公司 | The mechanical seal cooling structure of vacuum pump |
| CN208816338U (en) * | 2018-09-21 | 2019-05-03 | 江阴天田真空设备制造有限公司 | Lobe pump front and rear cover cooling structure |
-
2018
- 2018-09-21 CN CN201811109267.9A patent/CN108953155B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2625606Y (en) * | 2003-06-04 | 2004-07-14 | 上海萃曼真空机电制造有限公司 | Cooling structure for Root's vacuum pump |
| CN202867218U (en) * | 2012-10-18 | 2013-04-10 | 江阴天田真空设备制造有限公司 | Roots vacuum pump with magnetic transmission gear |
| CN103062063A (en) * | 2013-01-19 | 2013-04-24 | 上海零澜机械科技有限公司 | Convection and fully-cooled type end cover structure for novel roots pump |
| CN207598584U (en) * | 2017-11-20 | 2018-07-10 | 江阴天田真空设备制造有限公司 | The mechanical seal cooling structure of vacuum pump |
| CN208816338U (en) * | 2018-09-21 | 2019-05-03 | 江阴天田真空设备制造有限公司 | Lobe pump front and rear cover cooling structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108953155B (en) | 2024-05-10 |
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