CN103032344A - Circular water cooling system - Google Patents

Circular water cooling system Download PDF

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Publication number
CN103032344A
CN103032344A CN2012105633730A CN201210563373A CN103032344A CN 103032344 A CN103032344 A CN 103032344A CN 2012105633730 A CN2012105633730 A CN 2012105633730A CN 201210563373 A CN201210563373 A CN 201210563373A CN 103032344 A CN103032344 A CN 103032344A
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CN
China
Prior art keywords
water
port
pipeline
links
vacuum suction
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Pending
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CN2012105633730A
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Chinese (zh)
Inventor
李德东
延欣利
秦卫东
李广学
王晓宇
吴白杰
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SHANDONG JINYU TYRE CO Ltd
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SHANDONG JINYU TYRE CO Ltd
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Priority to CN2012105633730A priority Critical patent/CN103032344A/en
Publication of CN103032344A publication Critical patent/CN103032344A/en
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Abstract

The invention discloses a circular water cooling system. The system comprises a vacuum air extracting device, a cooling device and a water pumping device, wherein the first port of the water pumping device is connected with the first port of the vacuum air extracting device through a first pipeline; the second port of the water pumping device is connected with the first port of the cooling device through a second pipeline; and the second port of the vacuum air extracting device is connected with the second port of the cooling device through a third pipeline, so that a circular water cooling system provided with an annular channel is formed. In the scheme, water in the vacuum air extracting device is pumped into the cooling device through the water pumping device in the circular water cooling system, and cooled water is conveyed into the vacuum air extracting device again through the cooling device for reusing, so that the problem of water resource waste in a vacuum pumping process in the prior art is solved.

Description

Recirculating cooling water system
Technical field
The present invention relates to chemical technology field, particularly relate to a kind of recirculating cooling water system.
Background technique
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.Wherein, to be that a kind of variation by pump chamber realizes air-breathing, the variable-capacity vacuum pump of compression and exhaust for Nash hytor.In actual applications, the working solution that can drive in it when the vane rotary in the Nash hytor rotates accordingly, thereby so that this working solution has formed a closed circle that is similar to equal thickness that is decided by the pump chamber shape.Because working solution is water generally, that is to say that this closed circle generally is water ring.At vane rotary front 180 °, the volume that water ring and impeller form the space changes from small to big, and this moment, gas was inhaled into; Behind vane rotary 180 °, the volume that water ring and impeller form the space from large to small, this moment, gas was compressed, when this space communicated with relief opening, gas just was discharged from outside the pump.This Nash hytor high efficiency is air-breathing in order to make, compression and exhaust, can make that water temperature remains on lower temperature in its pump, and this water temperature should remain on 15 ℃ ~ 20 ℃ under the standard condition.Wherein, this standard condition is that temperature is 0 ℃, and pressure is 1 barometric pressure.
Be illustrated in figure 1 as in rubber, tyre industry the pumped vacuum systems figure based on Nash hytor, Nash hytor 100 links to each other with steam-water separator 110 by pipeline 120.Wherein, the high-temperature gas that Nash hytor 100 extracts in the curing bag, because this High Temperature Gas is known from experience the water section vaporization that makes in the Nash hytor, and then cause the interior pump chamber of Nash hytor to diminish, the decrease in efficiency that this Nash hytor is vacuumized curing bag, therefore, need to the water in this high-temperature gas and the Nash hytor 100 be discharged in the steam-water separator 110 together by pipeline 120, and the while is to the water of Nash hytor 100 continual supply uniform temperatures, to reduce the temperature of Nash hytor 100 interior water.Because the centrifugation of steam-water separator 110, the gas that is discharged to steam-water separator is emptying by the relief opening of steam-water separator 110, and the water that is discharged to steam-water separator is discharged to blow-off line by steam-water separator.
In above-mentioned pumped vacuum systems all can partly vaporize owing to utilizing this pumped vacuum systems to extract behind the gas in curing bag the water in the Nash hytor at every turn, thereby so that in this Nash hytor pump chamber diminish.Therefore, for the efficient that guarantees that Nash hytor vacuumizes curing bag, all the gas of the water in the Nash hytor and its extraction to be discharged to steam-water separator after each gas that extracts in the curing bag, and water is discharged to blow-off line the most at last, but in order to guarantee the normal operation of this pumped vacuum systems, must be at any time inject the water of uniform temperature in the Nash hytor.As seen, the vacuum of at every turn using this pumped vacuum systems all can be wasted a large amount of water.
Summary of the invention
In order to solve the problem of water resource waste in the vacuum, the embodiment of the invention provides a kind of recirculating cooling water system, and technological scheme is as follows:
A kind of recirculating cooling water system comprises:
Vacuum suction device, cooling unit, water plug;
Wherein, the first port of described water plug links to each other with the first port of described vacuum suction device by the first pipeline, and the second port of described water plug links to each other with the first port of described cooling unit by second pipe; The second port of described vacuum suction device links to each other with the second port of described cooling unit by the 3rd pipeline.
Wherein, above-mentioned recirculating cooling water system also comprises:
Water storing device;
The first port of described water storing device links to each other with the first port of described water plug by described the first pipeline, and the second port of described water storing device links to each other with the first port of described vacuum suction device by the 4th pipeline.
Wherein, above-mentioned recirculating cooling water system also comprises:
Controller for liquid flow;
Wherein, the first port of described controller for liquid flow links to each other with the second port of described cooling unit by described the 3rd pipeline, and described controller for liquid flow the second port links to each other with the second port of described vacuum suction device by the 5th pipeline.
Wherein, above-mentioned recirculating cooling water system also comprises:
Water separator;
The first port of described water separator links to each other with the first port of described water plug by described the first pipeline, and the second port of described water separator links to each other with the first port of described vacuum suction device by the 6th pipeline.
Wherein, above-mentioned recirculating cooling water system also comprises:
Water separator;
Wherein, the first port of described water separator links to each other with the first port of described vacuum suction device by described the 4th pipeline, and the second port of described water separator links to each other with the second port of described water storing device by the 7th pipeline.
Wherein, above-mentioned recirculating cooling water system also comprises:
Controller for liquid flow;
Wherein, the first port of described controller for liquid flow links to each other with the second port of described cooling unit by described the 3rd pipeline, and the second port of described controller for liquid flow links to each other with the second port of described vacuum suction device by the 8th pipeline.
Wherein, described vacuum suction device is Nash hytor.
Wherein, described water separator is the steam-water separator that is connected with spill pipe.
Wherein, described cooling unit is the High-temperature cooling tower that is connected with spill pipe.
Recirculating cooling water system provided by the invention links to each other by the first pipeline the first port of water plug with the first port of vacuum suction device, the second port of water plug links to each other with the first port of cooling unit by second pipe; The second port of vacuum suction device links to each other with the second port of cooling unit by the 3rd pipeline, and then has formed the recirculating cooling water system with annulus.In this programme, this recirculating cooling water system is drawn into cooling unit by water plug with the water in the vacuum suction device, and the water of this cooling unit after with cooling processing again is transported to and recycles in this vacuum suction device, solved the water resource waste problem in the vacuum in the prior art with this.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technological scheme of the prior art, the below will do simple the introduction to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is pumped vacuum systems structural representation of the prior art;
The first structural representation of a kind of recirculating cooling water system that Fig. 2 provides for the embodiment of the invention;
The second structural representation of a kind of recirculating cooling water system that Fig. 3 provides for the embodiment of the invention;
The third structural representation of a kind of recirculating cooling water system that Fig. 4 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technological scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment who obtains under the creative work prerequisite.
Need to prove, recirculating cooling water system provided by the invention is applicable to generation, the manufacturing industry of tire, rubber of chemical field etc.
In order to solve in the prior art problem of water resource waste in the vacuum, the embodiment of the invention provides a kind of recirculating cooling water system, as shown in Figure 2, can comprise:
Vacuum suction device 201, cooling unit 202, water plug 203;
Wherein, the first port of described water plug 203 links to each other with the first port of described vacuum suction device 201 by the first pipeline 204, and the second port of described water plug 203 links to each other with the first port of described cooling unit 202 by second pipe 205; The second port of described vacuum suction device 201 links to each other with the second port of described cooling unit 202 by the 3rd pipeline 206.
Need to prove, adopt the form of presentation of this first port, the second port just in order clearly to set forth the annexation between the device, is not the port for device for limiting.Can clearly set forth under the prerequisite of the annexation between the device, this first port can be the second port, and the second port also can be the first end mouth.
Compared with prior art, recirculating cooling water system provided by the invention links to each other by the first pipeline the first port of water plug with the first port of vacuum suction device, and the second port of water plug links to each other with the first port of cooling unit by second pipe; The second port of vacuum suction device links to each other with the second port of cooling unit by the 3rd pipeline, and then has formed the recirculating cooling water system with annulus.In this programme, this recirculating cooling water system is drawn into cooling unit by water plug with the water in the vacuum suction device, and the water of this cooling unit after with cooling processing again is transported to and recycles in this vacuum suction device, solved the water resource waste problem in the vacuum in the prior art with this.
In actual applications, vacuum suction device can extract the gas in the curing bag, create vacuum environment to make things convenient for the loading and unloading of tire for curing bag, consider that this kind industry of vacuum suction device becomes to produce needs, this vacuum suction device can be one or more sets Nash hytors; Certainly, any other vacuum suction devices of can extracting gases and can participate in this recirculating cooling water system also all are suitable for this recirculating cooling water system.Simultaneously, for the convenient large water gaging of discharging from vacuum suction device that stores, further, this recirculating cooling water system can also comprise: water storing device.In order to guarantee the pure of water quality in the water storing device, this water storing device can be underground aqua storage tank or the water storage tank of building confined space in; In addition, in order to build conveniently, save economic spending, this water storing device also can be directly to be built in open-air underground aqua storage tank or water storage tank, and this all is rational.
Need to prove, exhaust gas temperature in the curing bag that vacuum suction device extracts is usually up to 100 ℃, this High Temperature Gas is known from experience makes the water section in the vacuum suction device be vaporized into water vapour, the mixed gas that the waste gas of this water vapour and extraction forms is known from experience the pressure that makes in the vacuum suction device and is higher than extraneous barometric pressure, and this will cause certain difficulty to the water that water plug extracts in this vacuum suction device.Generally, because the density of mixed gas is less than the density of air, can be first with the discharging of the mixed gas in the vacuum suction device, and then with the water in the water plug extracting vacuum air extractor.
Further, in order faster the mixed gas in the vacuum suction device and water to be separated to improve the working efficiency of whole recirculating cooling water system, this recirculating cooling water system can also comprise: water separator.After vacuum suction device is discharged to water separator with mixed gas and water, centrifugation by water separator can separate mixed gas and water fast, isolated mixed gas cognition is discharged from steam-water separator, and isolated water can be taken away by water plug easily, the follow-up hydronic process of sustainable participation.Simultaneously, in order to guarantee this recirculating cooling water system efficiency operation, this water separator can be for being connected with the steam-water separator of spill pipe.Steam-water separator directly links to each other with spill pipe, and having avoided affects the working efficiency of whole recirculating cooling water system owing to connecting tube between steam-water separator and the water plug goes wrong in the actual application.
In addition, also need to prove, vacuum suction device can extracting gases be to rotate accordingly and form an airtight water ring because its inner impeller can drive working solution when rotated, this water ring upper inside surface and impeller hub are tangent, lower inner surface just contacts with blade tip, form a crescent-shaped space between impeller hub and the water ring this moment, and this space is divided into several loculuses that lobe numbers equates by impeller.If 0 ° as starting point take the top of impeller, the volume of impeller loculus when front 180 ° of rotation changes from small to big so, and communicates with intakeport on the end face, and this moment, gas was inhaled into.
As mentioned above; when the temperature of vacuum air extractor extracting gases is very high; can make its inner water section vaporization; the pump chamber of corresponding vacuum suction device will diminish; will reduce like this efficient of vacuum suction device extracting gases; in order to reduce the degree of water vapor, the common lower water of serviceability temperature as far as possible.And after being cooled once via the water that water plug is delivered to cooling unit; water temperature is usually still up to 70 ℃; this moment, so the water of high-temperature should not sent back to vacuum suction device immediately; in order to obtain the lower water of temperature; just should allow water in cooling unit, cool off repeatedly; this cooling repeatedly both can be by having realized also relying on technician's self experience to realize to doing cool time to limit; for example; artificial set one day or two days as limiting cool time; after reaching this restriction cool time; think to cool off and finish, the water in the cooling unit is transported in the vacuum suction device.
In order to realize the above-mentioned function that water is repeatedly cooled off, this cooling unit can be High-temperature cooling tower or the High-temperature cooling tower that is connected with spill pipe, the High-temperature cooling tower can cool off the water that is transported to the High-temperature cooling tower by water plug, and the final water that must reach certain chilling temperature, and the spill pipe that is connected to the High-temperature cooling tower can be transported to the water of High-temperature cooling tower middle water level line above flow-off in the water storing device, reduce the water temperature in the water storing device, these water are after being drawn into the High-temperature cooling tower cooler, temperature will be lower than 70 ℃ of cooling water temperatures once, so circulation is gone down, and the water temperature in the High-temperature cooling tower finally can reach the water temperature of satisfied temperature requirement.Need to prove, different seasons, industrial production is different to the temperature requirement of the water that cooling in the High-temperature cooling tower is finished, for example: in summer, because ambient temperature is higher, it is 40 ℃ ~ 50 ℃ that this water temperature is required, and in the winter time, because ambient temperature is lower, it is about 30 ℃ that this water temperature is required, and this all is rational.
Need to prove, the High-temperature cooling tower of cooling unit to be the High-temperature cooling tower still be connected with spill pipe no matter, no matter it is connected with water storing device or is connected with vacuum suction device, all must water could be extracted in the cooling unit by the pressure-acting of water plug; On the other hand, the pressure-acting of this water plug also helps water to inject the High-temperature cooling tower with the form of umbrella, like this can increasing heat radiation area, thereby make the High-temperature cooling tower take away more heat, improve the cooling effectiveness of High-temperature cooling tower, therefore, further, this water plug can be water pump.Certainly, any device that other can the depended on pressure effect draws water can participate in this recirculating cooling water system, and this all is rational.
Because the working procedure of recirculating cooling water system is a continuous working procedure, that is to say, in industrial processes, the water in the vacuum suction device should be updated at any time, also namely, the water that cooling is finished in the cooling unit should be able to pass through pipeline at any time and be transported in the vacuum suction device.In order to guarantee to have at any time cooled water to fill in the vacuum suction device, further, this circulation can also comprise: controller for liquid flow.Whether this controller for liquid flow both can play the effect of switch, control cooled water and can be transported in the vacuum withdraw device, the quantity delivered in the time of can controlling again cooled water and be transported in the vacuum suction device.Therefore, this controller for liquid flow can be manually-operated gate or automatic valve, certainly is not limited to this.
Below in conjunction with concrete application example, a kind of recirculating cooling water system provided by the invention is introduced.
As shown in Figure 3, a kind of recirculating cooling water system can comprise:
Nash hytor 301, High-temperature cooling tower 302, water pump 303, water reservoir 304, steam-water separator 305;
Wherein, the first port of described water reservoir 304 links to each other with the first port of described water pump 303 by the first pipeline 311, and the second port of described water reservoir 304 links to each other with the second port of described steam-water separator 305 by the 7th pipeline 309; The first port of described High-temperature cooling tower 302 links to each other with described water pump 303 by described second pipe 306, and the second port of described High-temperature cooling tower 302 links to each other with described Nash hytor 301 by described the 3rd pipeline 307; Described steam-water separator 305 links to each other with the first port of described vacuum pump by described the 4th pipeline 308.
To the composition of recirculating cooling water system and the description of annexation, the working procedure of introducing in detail recirculating cooling water system of the present invention below in conjunction with accompanying drawing is as follows based on above:
(1) Nash hytor 301 extracts the interior waste gas of curing bag, and the mixed gas of this waste gas and water vapour and the water in the Nash hytor are discharged in the steam-water separator 305 by pipeline 308;
(2) under the centrifugation of steam-water separator 305, mixed gas and water are distinguished, and mixed gas is discharged from outside the steam-water separator 305 simultaneously, and water is discharged in the water reservoir 304 by pipeline 309;
(3) water pump 303 is extracted into the water in the water reservoir 304 in the High-temperature cooling tower 302 by pipeline 306;
(4) the water part through 302 coolings of High-temperature cooling tower is discharged in the Nash hytor 301 by pipeline 307, and a part is discharged in the water reservoir 304 via pipeline 301, continuously participates in cooling procedure, in order to obtain the lower water of temperature.
The recirculating cooling water system that the present embodiment provides, steam-water separator with Nash hytor be discharged to mixed vapour in it and moisture from, then cool off via water pump isolated water being extracted in the High-temperature cooling tower, at last cooling is finished the water that reaches uniform temperature and again be transported to continuation utilization in the Nash hytor by pipeline, solved in the pumped vacuum systems extracting vacuum process of at every turn using steam-water separator and Nash hytor composition in the prior art and all can waste a large amount of water problems.
Finish the water yield that the working solution that reaches uniform temperature flows to Nash hytor in order to control to cool off in the High-temperature cooling tower, also namely control more accurately this recirculating cooling water system, the present invention also provides another embodiment, as shown in Figure 4, a kind of recirculating cooling water system can comprise:
Nash hytor 401, valve 402, High-temperature cooling tower 403, water pump 404, water reservoir 405, steam-water separator 406;
Wherein, the first port of described water reservoir 405 links to each other with the first port of described water pump 404 by the first pipeline 412, and the second port of described water reservoir 405 links to each other with the second port of described steam-water separator 406 by the 7th pipeline 411; The first port of described High-temperature cooling tower 403 links to each other with described water pump 404 by described second pipe 407, and the second port of described High-temperature cooling tower 403 links to each other with described valve 402 by described the 3rd pipeline 408; Described Nash hytor 401 links to each other with described steam-water separator 406 by described the 4th pipeline 410, and described Nash hytor 401 links to each other with described valve 402 by described the 8th pipeline 409.
To the composition of recirculating cooling water system and the description of annexation, the working procedure of introducing in detail recirculating cooling water system of the present invention below in conjunction with accompanying drawing is as follows based on above:
(1) Nash hytor 401 extracts the interior waste gas of curing bag, and the mixed gas of this waste gas and water vapour and the water in the Nash hytor are discharged in the steam-water separator 406 by pipeline 410;
(2) under the centrifugation of steam-water separator 406, mixed gas and water are distinguished, and mixed gas is discharged from outside the steam-water separator 406 simultaneously, and water is discharged in the water reservoir 405 by pipeline 411;
(3) water pump 404 is extracted into the water in the water reservoir 405 in the High-temperature cooling tower 403 by pipeline 407;
(4) the water part through 403 coolings of High-temperature cooling tower is transported in the Nash hytor 401 by pipeline 409 under the control action of valve 402, a part is discharged in the water reservoir 405 via pipeline 413, continuously participate in cooling procedure, in order to obtain the lower water of temperature.
The recirculating cooling water system that embodiment provides, steam-water separator 305 with Nash hytor 301 be discharged to mixed vapour in it and moisture from, then cool off via water pump isolated water being extracted in the High-temperature cooling tower, cooling is finished the water that reaches uniform temperature by the control action of valve and again be transported to continuation utilization in the Nash hytor with certain flow by pipeline, solved the pumped vacuum systems of at every turn using steam-water separator and Nash hytor composition in the prior art and all can waste a large amount of water problems.
Need to prove, the form of presentation of above-mentioned employing the first pipeline to the eight pipelines is not in order to limit a certain pipeline just in order clearly to set forth the annexation between the device.Can clearly set forth under the prerequisite of the annexation between the device, the first pipeline can be for arbitrary pipeline of second pipe to the eight pipelines, and same, this situation also is applicable to arbitrary pipeline of second pipe to the eight pipelines.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the present invention.Multiple modification to these embodiments will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, in other embodiments realization.Therefore, the present invention will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
The above only is the specific embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (9)

1. a recirculating cooling water system is characterized in that, comprising:
Vacuum suction device, cooling unit, water plug;
Wherein, the first port of described water plug links to each other with the first port of described vacuum suction device by the first pipeline, and the second port of described water plug links to each other with the first port of described cooling unit by second pipe; The second port of described vacuum suction device links to each other with the second port of described cooling unit by the 3rd pipeline.
2. recirculating cooling water system according to claim 1 is characterized in that, also comprises:
Water storing device;
The first port of described water storing device links to each other with the first port of described water plug by described the first pipeline, and the second port of described water storing device links to each other with the first port of described vacuum suction device by the 4th pipeline.
3. recirculating cooling water system according to claim 1 is characterized in that, also comprises:
Controller for liquid flow;
Wherein, the first port of described controller for liquid flow links to each other with the second port of described cooling unit by described the 3rd pipeline, and described controller for liquid flow the second port links to each other with the second port of described vacuum suction device by the 5th pipeline.
4. recirculating cooling water system according to claim 1 is characterized in that, also comprises:
Water separator;
The first port of described water separator links to each other with the first port of described water plug by described the first pipeline, and the second port of described water separator links to each other with the first port of described vacuum suction device by the 6th pipeline.
5. recirculating cooling water system according to claim 2 is characterized in that, also comprises:
Water separator;
Wherein, the first port of described water separator links to each other with the first port of described vacuum suction device by described the 4th pipeline, and the second port of described water separator links to each other with the second port of described water storing device by the 7th pipeline.
6. recirculating cooling water system according to claim 5 is characterized in that, also comprises:
Controller for liquid flow;
Wherein, the first port of described controller for liquid flow links to each other with the second port of described cooling unit by described the 3rd pipeline, and the second port of described controller for liquid flow links to each other with the second port of described vacuum suction device by the 8th pipeline.
7. the described recirculating cooling water system of any one is characterized in that according to claim 1-6, and described vacuum suction device is Nash hytor.
8. the described recirculating cooling water system of any one is characterized in that according to claim 1-6, and described water separator is the steam-water separator that is connected with spill pipe.
9. the described recirculating cooling water system of any one is characterized in that according to claim 1-6, and described cooling unit is the High-temperature cooling tower that is connected with spill pipe.
CN2012105633730A 2012-12-21 2012-12-21 Circular water cooling system Pending CN103032344A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2591296Y (en) * 2002-12-29 2003-12-10 山东晨鸣纸业集团股份有限公司 Water-ring vacuum pump water supply system
CN101473994A (en) * 2009-01-19 2009-07-08 徐文忠 Evacuating device of tobacco vacuum moisture regain box
JP2011047335A (en) * 2009-08-27 2011-03-10 Nittan Co Ltd Liquid ring vacuum pump device
CN201953673U (en) * 2011-03-24 2011-08-31 四川华神农大动物保健药品有限公司 Water saving device of water-ring vacuum pump
CN202301071U (en) * 2011-10-28 2012-07-04 济南大学 Water supply system of water ring vacuum pump
CN202360417U (en) * 2011-10-31 2012-08-01 南通龙鹰真空泵业有限公司 Water supply device of improved water-ring vacuum pump
CN202358920U (en) * 2011-11-28 2012-08-01 安徽六国化工股份有限公司 Vacuum device of monoammonium phosphate double effect concentration system
CN202441620U (en) * 2012-02-03 2012-09-19 太尔胶粘剂(广东)有限公司 Vacuum set for adhesives production

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2591296Y (en) * 2002-12-29 2003-12-10 山东晨鸣纸业集团股份有限公司 Water-ring vacuum pump water supply system
CN101473994A (en) * 2009-01-19 2009-07-08 徐文忠 Evacuating device of tobacco vacuum moisture regain box
JP2011047335A (en) * 2009-08-27 2011-03-10 Nittan Co Ltd Liquid ring vacuum pump device
CN201953673U (en) * 2011-03-24 2011-08-31 四川华神农大动物保健药品有限公司 Water saving device of water-ring vacuum pump
CN202301071U (en) * 2011-10-28 2012-07-04 济南大学 Water supply system of water ring vacuum pump
CN202360417U (en) * 2011-10-31 2012-08-01 南通龙鹰真空泵业有限公司 Water supply device of improved water-ring vacuum pump
CN202358920U (en) * 2011-11-28 2012-08-01 安徽六国化工股份有限公司 Vacuum device of monoammonium phosphate double effect concentration system
CN202441620U (en) * 2012-02-03 2012-09-19 太尔胶粘剂(广东)有限公司 Vacuum set for adhesives production

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Application publication date: 20130410