CN2632359Y - Anticorrosive water ring vacuum pumps - Google Patents
Anticorrosive water ring vacuum pumps Download PDFInfo
- Publication number
- CN2632359Y CN2632359Y CN 03268421 CN03268421U CN2632359Y CN 2632359 Y CN2632359 Y CN 2632359Y CN 03268421 CN03268421 CN 03268421 CN 03268421 U CN03268421 U CN 03268421U CN 2632359 Y CN2632359 Y CN 2632359Y
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- CN
- China
- Prior art keywords
- pump
- pump housing
- cover
- impeller
- water ring
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a corrosion-resistant water ring type vacuum pump and pertains to the field of a liquid variable-capacity type machinery, which comprises a pump consisting of at least one group of a front pump cover with a connecting flange, an air distribution disc, a pump casing and a rear pump cover integrates with the pump casing, an impeller positioned inside a cavity of the pump body and a motor of a driving impeller positioned outside the pump body, and is characterized in that the pump casing is separated into two sections of front and rear. Wherein, the pump casing of front section is integrated with the air distribution disc to constitute a front pump body. The pump casing of rear section is integrated with the rear pump cover to constitute a rear pump body. The front pump cover, the front pump body and the rear pump body are connected into a whole. The utility model adopts the integrated structure of the pump casing of front section and the air distribution disc, has no composite layer, good performance of the corrosion resistant of the flow passage component, simple manufacturing technique, high production efficiency and small workload of the operation and maintenance. The utility model is suitable for the pumping of various corrosive gases and can form the medium of liquid ring inside the pump, and is widely applied to the industries of the chemical, pharmaceutical, paper-making, light textile, food, metallurgy and electronics etc.
Description
Technical field
The utility model belongs to the fluid varactor machine field, relates in particular to a kind of Nash hytor.
Background technique
Nash hytor (Water-Ring Vacuum Pump) belongs to wet vacuum pump, is used for extracting or conveying gas more.Along with developing rapidly of industrial and agricultural production and scientific research cause, all trades and professions are growing to the demand of Nash hytor.But, the gas that contains various acid mediums in oil, the chemical industry production process is extremely strong to the corrosivity of equipment, existing cast iron or steel Nash hytor are not corrosion-resistant, can't for a long time, stably guarantee the degree of vacuum of equipment, service life is short, the integrated operation cost height that the user bears, owing to often vacuum pump is keeped in repair and changes, production brings very big inconvenience to continization.
In order to solve the corrosion-resistant problem of Nash hytor, successively develop stainless steel pump, ceramicpump and composite anticorrosive layer pump, these new pump kinds have some improvement than conventional vacuum pump aspect corrosion-resistant, but still have various deficiencies.The corrosion-resistant scope of stainless steel pump is little, the cost height; The ceramicpump poor toughness, fragile, change trouble; Composite anticorrosive layer pump be owing to adopt the composite structure of unlike material material, and the expansion coefficient difference of its material is prone to composite anticorrosive slabbing problem such as stitch, swell, come off, both influenced its seal clearance, influence its service life again, the maintenance work amount is big, integrated operation cost height.
June 28 nineteen ninety-five bulletin, notification number is to disclose a kind of acid-resistant ceramic liquid-piston rotary vacuum pump in the Chinese patent of CN 2202205Y, its side cover and the pump housing by ceramic fitting make lining, outward cylinder iron or Cast Steel armouring, centre fill with bulking agent and be composited.Have all corrosion resistant characteristics of the side cover and the pump housing.But it exists lamination layer structure complexity, deficiency that manufacture process is loaded down with trivial details.
The model utility content
Technical problem to be solved in the utility model provides that a kind of rational in infrastructure, manufacturing process is simple, corrosion resistance and good, long service life, the operation maintenance workload is little, the integrated operation cost is low corrosion resistant water ring formula vacuum pump.
The technical solution of the utility model is: a kind of corrosion resistant water ring formula vacuum pump is provided, comprise the pump housing that constitutes by at least one group of front pump cover that has a flange, gas distribution plate, pump case, with the rear pump cover of pump case one, be positioned at the endoceliac impeller of pump and be positioned at the motor of the outer drives impeller of the pump housing, it is characterized in that pump case is divided into forward and backward two sections; The pump housing before wherein leading portion pump case and gas distribution plate one constitute; Back segment pump case and rear pump cover one constitute the back pump housing; By fastening piece front pump cover, the preceding pump housing and back pump housing connection are become one.
Between wherein said front pump cover and the preceding pump housing and be the contact seal of convex-concave step between the preceding pump housing and the back pump housing and cooperate.
The flange of its described front pump cover is a square flange; Described impeller directly is sleeved on the motor shaft, and the front end of motor shaft is through anticorrosion back-up ring and bolt and impeller is fastening becomes one; Between the described back pump housing and the motor shaft anticorrosion mechanical seal external member is set; But the described basic pump unit array series connection that is made of front pump cover, the preceding pump housing, the back pump housing and impeller is provided with, and the extraction media outlet of last basic pump unit connects successively with the extraction medium import of one basic pump unit, back, constitutes multistage Nash hytor group; Described front pump cover, the preceding pump housing, the back pump housing, anticorrosion back-up ring, bolt and impeller are nonmetallic material.
Compared with the prior art, the utility model has the advantages that:
1. adopt leading portion pump case and the incorporate structure of gas distribution plate, the mechanical strength height, overall sealing performance is good.
2. each member of pump adopts the material with a kind of material, and there is not the different problem of expansion coefficient in no composite bed, corrosion resistance and good, long service life.
3. each member adopts mould compression moulding, does not have thick amount of machining, and smart amount of machining is few, and manufacturing process is simple, the manufacturing efficiency height.
4. adopt the phenolic fiberglass reinforced plastics material to make each member of pump, can guarantee the mechanical strength of each member, saved manufactured materials again, reduced manufacture cost through die pressing.
5. owing to the flow passage components corrosion resistance and good, the operation maintenance workload is little, has reduced user's integrated operation cost.
6. the vacuum pump working solution can be recycled, and has reduced pollution, has reduced operating cost.
Description of drawings
Fig. 1 is a structural representation of the present utility model; Fig. 2 is that the A of Fig. 1 is to view; Fig. 3 is another embodiment's of the utility model a structural representation; Fig. 4 is another embodiment's a structural representation.
Embodiment
Below in conjunction with drawings and Examples the utility model is further elaborated.
Among Fig. 1, pump case is divided into forward and backward two sections, the pump housing 6 before wherein leading portion pump case and gas distribution plate one constitute, back segment pump case and rear pump cover one constitute the back pump housing 9, having the front pump cover 5 of flange 7, the preceding pump housing, the back pump housing and connecting section 11 becomes one through fastening piece 8 connections, be fixed on the support 1, the front end end cap of connecting section and the motor 15 that is positioned at the outer drives impeller of the pump housing 12 connects through fastening piece and becomes one.
For sealing, the convex-concave step contacts between front pump cover and the preceding pump housing and between the preceding pump housing and the back pump housing.
Impeller 2 directly is sleeved on the motor shaft 10, the front end of motor shaft becomes one with impeller is fastening through anticorrosion back-up ring 3 and bolt 4, anticorrosion mechanical seal external member 13 is set between the back pump housing and the motor shaft, anticorrosion mechanical seal external member contacts with axle sleeve 14, and described front pump cover, the preceding pump housing, the back pump housing, anticorrosion back-up ring, bolt and impeller are the phenolic fiberglass reinforced plastics material and make through die pressing.
Among Fig. 2, make each member of pump through die pressing owing to adopt the phenolic fiberglass reinforced plastics material, under the prerequisite that guarantees mechanical strength, the extraction medium inlet/outlet flange 7-1 of front pump cover and 7-2 adopt the structural type of square flange, both guarantee the mechanical strength of connecting flange, saved manufactured materials again.
Among Fig. 3, the pump housing is taked the structural type of twin shaft bolster, two front pump cover, two preceding pump housing and single impeller, wherein front axle bolster 21-1 and rear axle bolster 21-2 are divided into pump housing two ends, and the flow passage components of entire pump are made of as symmetrically arranged front pump cover, the preceding pump housing and an impeller two arrangements of mirrors; A side of pump housing 24-1 and impeller 26 constitutes the first work pump chamber before the first front pump cover 22-1, first, the opposite side of pump housing 24-2 and impeller 26 constitutes the second work pump chamber before the second front pump cover 22-2, second, impeller set is contained on the pump shaft 27, and pump shaft connects with drive motor through coupling 25.The suction of first, second pump cover, relief opening 23-1,23-2 connect with equipment installation respectively, and remaining part is identical with Fig. 1 or Fig. 2.
Among Fig. 4, the pump housing adopts the structural type of double pump chamber, bilobed wheel, and front axle bolster 31-1 and rear axle bolster 31-2 are divided into pump housing two ends, and the flow passage components of entire pump are made of as symmetrically arranged front pump cover, the preceding pump housing, the back pump housing and impeller two arrangements of mirrors; Wherein pump housing 34-1, the first back pump housing 35-1 and the first impeller 33-1 constitute first pump chamber before the first front pump cover 32-1, first, pump housing 34-2, the second back pump housing 35-2 and the second impeller 33-2 constitute second pump chamber before the second front pump cover 32-2, second, two impeller concentric locking collars are contained on the pump shaft 36, and pump shaft connects with drive motor through coupling 37.The relief opening of first pump cover connects through the suction port of connecting tube 38 with second pump cover, constitutes two-stage tandem pump structure form, and the relief opening of the suction port of first pump cover and second pump cover connects with equipment installation respectively, and remaining part is identical with Fig. 1 or Fig. 2.
The utility model adopts leading portion pump case and gas distribution plate integral structure, no composite bed, and the flow passage components corrosion resistance and good, manufacturing process is simple, the manufacturing efficiency height, the operation maintenance workload is little.Be applicable to the medium of pumping various corrosive gass and in pump, forming pendular ring, can be used for pumping the pulp water that does not contain suspended particulate or crystallization, organic and inorganic sour acid solution.Can be widely used in industries such as chemical industry, pharmacy, papermaking, light textile, food, metallurgy, electronics.
Claims (7)
1. corrosion resistant water ring formula vacuum pump, comprise the pump housing that constitutes by at least one group of front pump cover that has a flange, gas distribution plate, pump case, with the rear pump cover of pump case one, be positioned at the endoceliac impeller of pump and be positioned at the motor of the outer drives impeller of the pump housing, it is characterized in that:
Pump case is divided into forward and backward two sections; Wherein
The pump housing before leading portion pump case and gas distribution plate one constitute;
Back segment pump case and rear pump cover one constitute the back pump housing;
By fastening piece front pump cover, the preceding pump housing and back pump housing connection are become one.
2. according to the described corrosion resistant water ring formula of claim 1 vacuum pump, it is characterized in that between described front pump cover and the preceding pump housing and the preceding pump housing and the back pump housing between be the contact seal of convex-concave step and cooperate.
3. according to claim 1 or 2 described corrosion resistant water ring formula vacuum pumps, the flange that it is characterized in that described front pump cover is a square flange.
4. according to claim 1 or 2 described corrosion resistant water ring formula vacuum pumps, it is characterized in that described impeller directly is sleeved on the motor shaft, the front end of motor shaft is through anticorrosion back-up ring and bolt and impeller is fastening becomes one.
5. according to claim 1 or 2 described corrosion resistant water ring formula vacuum pumps, it is characterized in that between the described back pump housing and the motor shaft anticorrosion mechanical seal external member being set.
6. according to claim 1 or 2 described corrosion resistant water ring formula vacuum pumps, it is characterized in that but the described basic pump unit array series connection that is made of front pump cover, the preceding pump housing, the back pump housing and impeller is provided with, the extraction media outlet of last basic pump unit, connect successively with the extraction medium import of one basic pump unit, back, constitute multistage Nash hytor group.
7. according to claim 1 or 2 described corrosion resistant water ring formula vacuum pumps, it is characterized in that described front pump cover, the preceding pump housing, the back pump housing, anticorrosion back-up ring, bolt and impeller are nonmetallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03268421 CN2632359Y (en) | 2003-06-20 | 2003-06-20 | Anticorrosive water ring vacuum pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03268421 CN2632359Y (en) | 2003-06-20 | 2003-06-20 | Anticorrosive water ring vacuum pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2632359Y true CN2632359Y (en) | 2004-08-11 |
Family
ID=34299393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03268421 Expired - Fee Related CN2632359Y (en) | 2003-06-20 | 2003-06-20 | Anticorrosive water ring vacuum pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2632359Y (en) |
-
2003
- 2003-06-20 CN CN 03268421 patent/CN2632359Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040811 |