CN2168974Y - Three-stage vaccum pump set with gas-water series spraying - Google Patents
Three-stage vaccum pump set with gas-water series spraying Download PDFInfo
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- CN2168974Y CN2168974Y CN 93226017 CN93226017U CN2168974Y CN 2168974 Y CN2168974 Y CN 2168974Y CN 93226017 CN93226017 CN 93226017 CN 93226017 U CN93226017 U CN 93226017U CN 2168974 Y CN2168974 Y CN 2168974Y
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Abstract
The utility model relates to a three-stage vacuum pump set with the gas-water series jet. The utility model is connected by two steam jet pumps and a water jet pump in series, and is also provided with a unitized device which is a working centrifugal pump, a water tank, a regulating valve, and a steam-water separator through a pipeline. Two jet pumps with different working principles are connected in series with different working medias, and consequently, the working vacuum degree is raised. The utility model is suitable for the technological processes of the decompression vaporization, the distillation, etc., under higher vacuum. The utility model adopts the method that the jet pumps are horizontally placed, and is installed in low level. Therefore, the utility model has the advantages of simple and reasonable structure, small size, convenient use, and strong unitized performance.
Description
The utility model relates to a kind of vacuum generating equipment, particularly a kind of tandem injection vacuum pump unit.
Industrial vacuum generating equipment mainly is divided into two classes at present: a class is the mechanical volume vacuum pump, and another kind of is the jet type vacuum pump.Described mechanical volume vacuum pump is by machinery action to be changed in the pump chamber swept volume generation cycle to realize bleeding effect, and common have patterns such as sliding valve style, rotary sheet type, roots-type; This class pump is because of having rotation or reciprocating member, therefore exist more easy to wear, need shortcomings such as often maintenance and life-span be short.And the jet type vacuum pump mainly is by the high-speed jet of working medium by nozzle, make at its exit region and form the vacuum effect that realizes bleeding, therefore, this pump does not have mechanical moving element, thus have simple in structure, reliable operation, life-span long, easy to operate, be easy to make maintenance and working medium characteristics such as acquisition easily; Be that single-stage or multi-stage combination by this class pump uses to obtain ultimate vacuum during general the use, the vacuum generating equipment of this usage mode obtains widespread in chemical industry, light industry and food service industry.For example, need to be equipped with vacuum generating equipment so that distilling apparatus is operated in vacuum distillation technology under decompression state, can quicken component distillation effectively like this, degree of vacuum is high more, then distilling effect is good more, and efficient is also just high more.Vacuum crystallization technology also needs evaporating plant is found time, and it is worked under decompression state make it to cool off voluntarily to accelerate the stoste evaporation, and stoste just becomes hypersaturated state to separate out crystallization because temperature reduces.Mostly about absolute pressure 133Pa, the working vacuum degree in vacuum crystallization technology is mostly about absolute pressure 400Pa for working vacuum degree in vacuum distillation technology.At present the vacuum generating equipment that is equipped with in above-mentioned vacuum distillation or vacuum crystallization technology mostly adopts the mechanical volume vacuum pump, and their ultimate vacuum can reach absolute pressure 10
-2Pa can satisfy usage requirement, but owing to have above-mentioned shortcoming, unsatisfactory in the use.And outfit jet type vacuum pump, reaching above-mentioned absolute pressure is the working vacuum degree of 133Pa, at least to adopt the level Four vapor pump, because all use vapor pump for four, it is bigger then to consume steam flow, for example when the tolerance of finding time is 2kg/h, the about 200kg/h of consumption steam flow, just very nervous as steam supply itself, then the steam consumption quantity of 200kg/h has just become extraneous expense, thereby very uneconomical; In addition, also need install carrying out a high position more than 10 meters, will be equipped with 3 condensers simultaneously, also need to build steel structure support, make not only therefore that device volume is big, mechanism complicated huge, manipulate inconvenience, but also increased civil engineering workload and investment.
The purpose of this utility model is to overcome existing deficiency in the above-mentioned prior art, and a kind of vacuum generating device with better using effect reasonable in design, simple in structure is provided.
A kind of three grades of Gas-water Cascade Jet Vacuum Pump Group of the present utility model include the vapor pump that two series connection are provided with, and it is characterized in that also include: a cyclic water tank is arranged on the public base; One centrifugal water pump is connected with described cyclic water tank; One water jet pump is connected mutually with described vapor pump by pipeline fittings; Described three grades of jet pumps are arranged in such a way on described cyclic water tank: the first order is a vapor pump, and its suction inlet is connected with the container that is sucked; It is connected in second level vapor pump subsequently, is connected in third level water jet pump at last, and the connection between described each pump is outlet and directly links to each other facing to suction inlet ground.
Three grades of Gas-water Cascade Jet Vacuum Pump Group of the present utility model also are provided with steam-water separator and regulating valve, and they are successively set in the inlet ductwork of vapor pump.
The arrangement of three jet pumps of the present utility model is to adopt horizontal arrangement low level to install.
It is conspicuous adopting the advantage of the structural type of two steam pumps of the present utility model and water jet pump series connection.On the one hand, adopt two steam pumps and a water jet pump to realize that the series connection use can reach four steam jet series connections of pumps and use all performance index of degree of vacuum, gettering quantity that just can reach, thereby reach the purpose of oversimplifying structure, reducing cost, reduce steam consumption quantity.Though adopted a water jet pump, its operation power is to be supplied with by a centrifugal pump, and the required power consumption of centrifugal pump can be general use department and bears.On the other hand, whole unit is assembled into one, its all component all can be placed on the base, be convenient to like this deposit and transport, make the complete property of unit strong, as long as can use after connecting working steam and power supply, can remove the trouble of user installation from, because the unit height is low, volume is little, it is indoor to put into individual layer, is convenient to operation and maintenance.Moreover, because the third level is adopted water jet pump, can remove the condenser that must use in the series connection of multistage steam jet pump like this from, thereby reduce cost, simplified equipment, when reducing height greatly, also saved steel structure support and reduced institute and taken up space.
Now by a most preferred embodiment and specify the structural feature of three grades of Gas-water Cascade Jet Vacuum Pump Group of the present utility model in conjunction with its accompanying drawing.
Fig. 1 is the general arrangement schematic of a most preferred embodiment of the present utility model.
As shown in the figure, this unit is to be in series by first order vapor pump 5, second level vapor pump 4, third level water jet pump 3.Their suction inlet 13 directly links to each other with outlet 17, and is installed on the cyclic water tank 9 by support is horizontal.The work water of centrifugal pump 1 for third level water jet pump 3 is housed on the unit.Water tank 9 is contained on the base 10 with centrifugal pump 1.Working steam S divides two-way to enter first order vapor pump 5 and second level vapor pump 4 through regulating valve 6 by steam-water separator 7 backs earlier.Working water enters the usefulness of water tank for centrifugal pump 1 circulating water by tail pipe 8.
When this unit uses, in cyclic water tank 9, put into circulating water to flow-off 15, start centrifugal pump 1 and make 3 work of third level water jet pump, working water enters water tank by tail pipe 8 and continues to supply with centrifugal pump 1.Meanwhile, add working steam S, make it enter the nozzle 18 of vapor pump 4,5 by steam-water separator 7, the effect of steam-water separator 7 is will bring moisture content in the steam into to separate the back and discharge, and makes it become dry saturated vapor to improve steam quality.The working steam pressure of two steam ejectors 4,5 has certain requirement, is to show by regulating valve 6 controls and by pressure gauge 11.After three pumps 3,4,5 were worked simultaneously, the suction port 13 of first order pump 5 just can aspirate ambient atmos, and its suction inlet 13 is to be connected with the other sealed gas chamber 2 of water tank, and a flange-interface 14 is housed on described air chamber 2 in addition, specialized in externally to be taken out container.The working vacuum degree shows by the vacuum gauge 12 that is located on the air chamber 2, and carrying out can changing vacuum gauge into McLeod gage when condition of high vacuum degree is measured.In the unit working procedure, need to replenish cooling water with the work cycle water for cooling to keep the unit working stability.
In the present embodiment, the actual volume of cyclic water tank is 1.3 meters
3Centrifugal pump is selected IS80-65-160 for use, 60 meters of flows
3/ hour, 30 meters of lifts, 7.5 kilowatts of power.Three jet pumps are through specialized designs, and first order vapor pump working pressure is 4kg/cm
2, second level vapor pump working pressure is 3kg/cm
2, third level water jet pump working pressure is 2.5kg/cm
2About 70 kilograms/hour of total work steam consumption quantity.The performance index of this unit are: ultimate vacuum is absolute pressure 66 handkerchiefs (0.5 millimeter of mercury), maximum evacuation tolerance (atmospheric conditions) is 200 kilograms/hour, typical the find time tolerance (atmospheric conditions) of working vacuum degree when absolute pressure 133 handkerchiefs (1 millimeter of mercury) and 266 handkerchiefs (2 millimeter of mercury) is respectively 2.2 kilograms/hour and 4 kilograms/hour, about 5.5 tons/hour of cooling water inflow.
Though principle of the present utility model and structural feature illustrate by a specific embodiment, but this is not to restriction of the present utility model, should be understood that those skilled in the art that also can make various alternative schemes under the situation of the utility model spirit, and these variation schemes all are in scope of the present utility model, for example the increase and decrease of annex and arrangement variation etc.
Claims (5)
1, a kind of three grades of Gas-water Cascade Jet Vacuum Pump Group that can produce condition of high vacuum degree include the vapor pump that two series connection are provided with, and it is characterized in that it also includes: a cyclic water tank, and it is arranged on the public base; One centrifugal water pump is connected with described cyclic water tank; One water jet pump is connected mutually with described vapor pump by pipeline fittings; Described three grades of jet pumps are arranged in such a way on described cyclic water tank: the first order is a vapor pump, its suction inlet is connected with the container that is sucked, it is connected in second level vapor pump subsequently, be connected in third level water jet pump at last, the connection between described each pump is outlet and directly links to each other facing to suction inlet ground.
2, three grades of Gas-water Cascade Jet Vacuum Pump Group as claimed in claim 1 is characterized in that it also is provided with a steam-water separator, be arranged on the import of described vapor pump before.
3, three grades of Gas-water Cascade Jet Vacuum Pump Group as claimed in claim 1 or 2 is characterized in that it also is provided with the regulating valve that is used for steam regulation jet pump working pressure, are arranged in the admission passage of described vapor pump.
4, three grades of Gas-water Cascade Jet Vacuum Pump Group as claimed in claim 1 or 2 is characterized in that, the setting of described jet pump is that horizontal ground low level is installed.
5, three grades of Gas-water Cascade Jet Vacuum Pump Group as claimed in claim 3 is characterized in that the setting of described jet pump is to install horizontally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93226017 CN2168974Y (en) | 1993-07-10 | 1993-07-10 | Three-stage vaccum pump set with gas-water series spraying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93226017 CN2168974Y (en) | 1993-07-10 | 1993-07-10 | Three-stage vaccum pump set with gas-water series spraying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2168974Y true CN2168974Y (en) | 1994-06-15 |
Family
ID=33803698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93226017 Expired - Lifetime CN2168974Y (en) | 1993-07-10 | 1993-07-10 | Three-stage vaccum pump set with gas-water series spraying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2168974Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100498630C (en) * | 2002-12-12 | 2009-06-10 | 工艺塑料艺术材料技术有限公司 | Method and device for regulating the vacuum supply of calibration tools |
| CN103846242A (en) * | 2012-12-04 | 2014-06-11 | 爱阔特(上海)清洗设备制造有限公司 | Pressure reducing device and vacuum drying device |
| CN112334707A (en) * | 2018-06-19 | 2021-02-05 | 真空能量有限责任公司 | Independent boiler equipment of negative pressure heating system |
-
1993
- 1993-07-10 CN CN 93226017 patent/CN2168974Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100498630C (en) * | 2002-12-12 | 2009-06-10 | 工艺塑料艺术材料技术有限公司 | Method and device for regulating the vacuum supply of calibration tools |
| CN103846242A (en) * | 2012-12-04 | 2014-06-11 | 爱阔特(上海)清洗设备制造有限公司 | Pressure reducing device and vacuum drying device |
| CN103846242B (en) * | 2012-12-04 | 2015-10-14 | 爱阔特(上海)清洗设备制造有限公司 | Decompressor and Minton dryer |
| CN112334707A (en) * | 2018-06-19 | 2021-02-05 | 真空能量有限责任公司 | Independent boiler equipment of negative pressure heating system |
| CN112334707B (en) * | 2018-06-19 | 2022-10-21 | 真空能量有限责任公司 | Independent boiler equipment of negative pressure heating system |
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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 | ||
| CX01 | Expiry of patent term |