CN2620113Y - Direct connected water ring type vacuum pump - Google Patents
Direct connected water ring type vacuum pump Download PDFInfo
- Publication number
- CN2620113Y CN2620113Y CN 03221529 CN03221529U CN2620113Y CN 2620113 Y CN2620113 Y CN 2620113Y CN 03221529 CN03221529 CN 03221529 CN 03221529 U CN03221529 U CN 03221529U CN 2620113 Y CN2620113 Y CN 2620113Y
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- China
- Prior art keywords
- impeller
- pump
- exhaust
- direct
- intake
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- Expired - Fee Related
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Abstract
The direct-connected water ring vacuum pump of the utility model relates to a single-stage single-acting water ring vacuum pump. The structure comprises a pump cover, an intake and exhaust disc, a pump impeller, a mechanical seal device and a motor. The impeller is installed inside the pump in which the front end is provided with a pump cover. The intake and exhaust disc is arranged between the impeller and the pump cover. The motor is directly linked to the pump rear through a motor connecting end cover. The impeller is fixed on the motor shaft, and the mechanical seal device mounting hole of the impeller is provided with the mechanical seal device. The pump cover is provided with an air inlet, an water inlet hole as well as an exhaust and drain outlet. The intake and exhaust disc is provided with an air inlet, an water inlet hole as well as an exhaust and drain outlet in which the lateral is provided with an exhaust valve plate. The impeller has an impeller body provided with a plurality of vanes. The vane root and the impeller body incenter are in streamline shape arrangement. The impeller body centre has a motor shaft hole. One end of the impeller body is provided with a mechanical seal device mounting hole, and the other end is provided with a motor shaft end cover mounting hole.
Description
Technical field
What the direct-connected Nash hytor of the utility model related to is the single Nash hytor of a kind of single-stage.
Background technique
The Nash hytor pump housing is split type at present, and sealability is relatively poor, causes seepage easily, influences the raising of degree of vacuum, also is not easy to maintenance.In addition.Be the right angle type arrangement in the blade of impeller and the impeller between the cover, during work resistance to water-flow big, consumed energy is many, causes that the motor power (output) loss is big.
Summary of the invention
The purpose of this utility model is to provide a kind of direct-connected Nash hytor at above-mentioned deficiency, has overall structure, and the pump housing, pump cover, heart are the impeller of streamline, and be simple in structure, compact, and good seal performance is easy to maintenance, saving power.
The straight empty pump of direct-connected water ring type takes following scheme to realize: direct-connected Nash hytor structure comprises pump cover, intake and exhaust dish, the pump housing, impeller, mechanical seal device, motor.Impeller is housed in the pump housing, and pump housing fore device has pump cover, and device has the intake and exhaust dish between impeller and pump cover, and motor connects end cap by motor and directly is connected with pump housing rear end.Pump cover is provided with suction port, water inlet, exhaust outlet mouth, and the intake and exhaust dish is provided with suction port, water inlet, exhaust outlet hole.Impeller has impeller body, impeller body is provided with some blades, root of blade and impeller body heart are streamline (circular arc) setting, there is motor axis hole at the impeller body center, be provided with mechanical seal device mounting hole (step hole) at impeller body one end, the other end has motor shaft end cap mounting hole.Impeller is fixed on the motor shaft by pin, key.In turbomachine seal arrangement mounting hole, mechanical seal device is housed.Mechanical seal device comprises rotary packing ring, spring, stationary seal ring, seal ring.The stationary seal ring device is in pump housing seal ring mounting hole, device has " O " shape seal ring on stationary seal ring, device has seal ring in the rotary packing ring, be used for sealing movingly with motor shaft, stationary seal ring and rotary packing ring end face are realized motive sealing (minute surface sealing), prevent that aqueous vapor leaks into pump housing outside along motor shaft, pump housing motor axis hole in the pump housing.Be provided with pump housing inner chamber in the pump housing, be used to install impeller, the pump housing one end is opened, and the other end is provided with eccentric pivot hole, seal ring mounting hole, is used to install motor shaft.
The intake and exhaust dish is provided with inlet hole, water inlet, exhaust outlet hole, and device has exhaust valve plate in the outside, exhaust outlet hole, and exhaust valve plate is the elastic one-way valve block, and exhaust valve plate is equipped with gland outward, is back in the pump housing with gas, the water that prevents to discharge.Inlet hole is connected with suction port on the pump cover, and the water inlet is connected with water inlet on the pump cover, and the exhaust outlet hole is connected with exhaust outlet mouth on the pump cover.
Working principle and characteristics thereof: the straight empty pump of direct-connected water ring type is a structure of utilizing the different hearts with impeller of the pump housing to install, when impeller is done rotation, constitute the water ring that becomes off-centre with impeller, be filled in of the rotation of interlobate water along with impeller, between blade, constantly do periodic to-and-fro motion, change the middle volume of blade, under the corresponding cooperation of fixing intakeport and relief opening, finish air-breathing compression and exhaust process.Known that by Dalton's law the absolute pressure in the pump chamber equals partial pressure and saturated vapor pressure sum, the work water temperature is high more, and saturation vapour pressure is just high more, and the absolute pressure in the corresponding pump chamber is also high more, and the degree of vacuum that can be extracted into is also low more like this.So for degree of vacuum and the pumping efficiency that improves water ring pump, the working water temperature of use is low, and to constantly give the supplementing water cooling.The straight empty pump of the direct-connected water ring type of the utility model is horizontal direct-connection type, whole pump is connected motor by intake and exhaust pump cover, intake and exhaust dish, pump case and connects end cap with impeller, compositions such as mechanical seal, impeller directly is bearing on the motor reel, the support of pump is the support of motor, and is therefore, simple in structure, compact, good airproof performance, easy to maintenance.
For remove water ring pump in running because pressure reduction changes the overcompression produced greatly and the phenomenon of insufficient compression, reduce the power that pump consumes, in the outside, exhaust outlet hole of intake and exhaust dish exhaust valve plate is housed.
The axle envelope adopts single end face hard alloy mechanical seal device, it is to lean on contact end face on the generation suitable impacting force of the pressure of resilient member and sealing medium at rotating ring that rotates and stationary ring, these two end faces are fitted tightly, keep between end face one deck as thin as a wafer liquid film and reach the purpose of sealing.
Impeller adopts Cuprum alloy or special cast iron, and its corrosion resistance is better.Because its root of blade and its body heart are streamline (circular arc) setting, water between blade during work, gas are little with the impeller rotational resistance, reduce motor power consumption, greatly saving power.
The straight empty pump of the direct-connected water ring type of the utility model is mainly used to suction, carries air and other gas, be specially adapted to aspirate the gas that contains a large amount of water vapors, be applicable to that also suction contains certain corrosive gas, the for example vacuum distillation of chemical industry, drying, the vacuum degassing of plastic article industry, shaping, the vacuum drying of leather industry, the vacuum concentration of beverage industry, the true dehydration of light textile, paper industry etc.It makes the fore pump of Roots pump, can improve the using scope of Roots pump greatly.
Description of drawings
The utility model is described in further detail below with reference to accompanying drawing.
Fig. 1 is direct-connected Nash hytor structure assembling view.
Fig. 2 is the impeller sectional view of direct-connected Nash hytor.
Fig. 3 is the mechanical seal device schematic representation of direct-connected Nash hytor.
Embodiment
Comprise pump cover 1, intake and exhaust dish 8, the pump housing 16, impeller, mechanical seal device, motor 21 with reference to accompanying drawing 1,2,3 direct-connected Nash hytor structures.In the pump housing 16 impeller is housed, the pump housing 16 fore devices have pump cover 1, and device has intake and exhaust dish 8 between impeller and pump cover 1, and motor 21 connects end cap 20 by motor and directly is connected with the pump housing 16 rear ends.Pump cover 1 is provided with suction port 4, water inlet 2, exhaust outlet mouth 3, and intake and exhaust dish 8 is provided with suction port 10, water inlet 9, exhaust outlet hole 7.Impeller has impeller body 11, impeller body 11 is provided with some blades 12, blade 12 roots and impeller body heart are streamline (circular arc) setting, there is motor axis hole 13 at the impeller body center, be provided with mechanical seal device mounting hole (step hole) 14 at impeller body one end, the other end has motor shaft end cap mounting hole 15.Impeller is fixed on the motor shaft 19 by pin, key.In turbomachine seal arrangement mounting hole 14, mechanical seal device is housed.Mechanical seal device comprises rotary packing ring 22, spring 23, stationary seal ring 24, seal ring 25.Stationary seal ring 24 devices are in pump housing seal ring mounting hole, device has " O " shape seal ring 25 on stationary seal ring, device has seal ring 26 in the rotary packing ring, be used for sealing movingly with motor shaft 19, stationary seal ring 24 is realized motive sealing (minute surface sealing) with rotary packing ring 22 end faces, prevents that aqueous vapor leaks into pump housing outside along motor shaft, pump housing motor axis hole in the pump housing.Be provided with pump housing inner chamber 17 in the pump housing 16, be used to install impeller, the pump housing one end is opened, and is provided with pump cover and connects step 18, connects screw, and the other end is provided with eccentric pivot hole, seal ring mounting hole, is used to install motor shaft.
Between pump cover 1 and the intake and exhaust dish 8 seal ring or sealant layer are housed, intake and exhaust dish 8 is provided with inlet hole 10, water inlet 9, exhaust outlet hole 7,7 outside devices have exhaust valve plate 6 in the exhaust outlet hole, exhaust valve plate 6 is the elastic one-way valve block, outside the exhaust valve plate 6 gland 5 is housed, is back in the pump housing with gas, the water that prevents to discharge.Inlet hole 10 on the intake and exhaust dish 8 is connected with suction port 4 on the pump cover 1, and water inlet 9 is connected with water inlet 2 on the pump cover 1, and exhaust outlet hole 7 is connected with exhaust outlet mouth 3 on the pump cover 1.
Claims (8)
1, a kind of direct-connected Nash hytor is characterized in that structure comprises pump cover, intake and exhaust dish, the pump housing, impeller, mechanical seal device, motor; Impeller is housed in the pump housing, pump housing fore device has pump cover, and device has the intake and exhaust dish between impeller and pump cover, and motor connects end cap by motor and directly is connected with pump housing rear end, impeller is fixed on the motor shaft, in the mechanical seal device mounting hole of impeller mechanical seal device is housed.
2, direct-connected Nash hytor according to claim 1 is characterized in that pump cover is provided with suction port, water inlet, exhaust outlet mouth.
3, direct-connected Nash hytor according to claim 1 is characterized in that the intake and exhaust dish is provided with suction port, water inlet, exhaust outlet hole.
4, direct-connected Nash hytor according to claim 1 is characterized in that the outside, the exhaust outlet hole device on the intake and exhaust dish has exhaust valve plate.
5, direct-connected Nash hytor according to claim 1, it is characterized in that impeller has impeller body, impeller body is provided with some blades, root of blade and impeller body heart are the streamline setting, there is motor axis hole at the impeller body center, be provided with the mechanical seal device mounting hole at impeller body one end, the other end has motor shaft end cap mounting hole.
6, direct-connected Nash hytor according to claim 1 is characterized in that mechanical seal device comprises rotary packing ring, spring, stationary seal ring, seal ring.
7, direct-connected Nash hytor according to claim 1 is characterized in that being provided with pump housing inner chamber in the pump housing, is used to install impeller, the pump housing one end is opened, be provided with pump cover and connect step, connect screw, the other end is provided with eccentric pivot hole, seal ring mounting hole, is used to install motor shaft.
8, direct-connected Nash hytor according to claim 1 is characterized in that between pump cover and the intake and exhaust dish seal ring or sealant layer being housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03221529 CN2620113Y (en) | 2003-04-30 | 2003-04-30 | Direct connected water ring type vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03221529 CN2620113Y (en) | 2003-04-30 | 2003-04-30 | Direct connected water ring type vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2620113Y true CN2620113Y (en) | 2004-06-09 |
Family
ID=34244702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03221529 Expired - Fee Related CN2620113Y (en) | 2003-04-30 | 2003-04-30 | Direct connected water ring type vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2620113Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603518B (en) * | 2009-06-24 | 2010-09-22 | 奉化市釜用密封件有限公司 | Mechanical seal for vacuum equipment and lubrication method thereof |
| CN105179268A (en) * | 2015-09-06 | 2015-12-23 | 广德玉龙泵业有限公司 | Vacuum pump |
| CN108087277A (en) * | 2017-12-25 | 2018-05-29 | 广东肯富来泵业股份有限公司 | Combined dispenser twin-stage liquid rotary pump |
-
2003
- 2003-04-30 CN CN 03221529 patent/CN2620113Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603518B (en) * | 2009-06-24 | 2010-09-22 | 奉化市釜用密封件有限公司 | Mechanical seal for vacuum equipment and lubrication method thereof |
| CN105179268A (en) * | 2015-09-06 | 2015-12-23 | 广德玉龙泵业有限公司 | Vacuum pump |
| CN108087277A (en) * | 2017-12-25 | 2018-05-29 | 广东肯富来泵业股份有限公司 | Combined dispenser twin-stage liquid rotary pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040609 Termination date: 20110430 |