CN203167999U - Vacuum pumping device for tobacco vacuum box - Google Patents
Vacuum pumping device for tobacco vacuum box Download PDFInfo
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- CN203167999U CN203167999U CN 201320209864 CN201320209864U CN203167999U CN 203167999 U CN203167999 U CN 203167999U CN 201320209864 CN201320209864 CN 201320209864 CN 201320209864 U CN201320209864 U CN 201320209864U CN 203167999 U CN203167999 U CN 203167999U
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Abstract
The utility model discloses a vacuum pumping device for a tobacco vacuum box. The vacuum pumping device comprises a vacuum box, a primary steam-jet pump, a first condenser, a secondary steam-jet pump, a second condenser and a water ring vacuum pump and further comprises a shell-and-tube heat exchanger, a first water pump, a second water pump, a third water pump and a cooling tower. The parts form an air channel, a cooling water channel and a water ring pump cooling water channel. The two steam-jet pumps are connected in series with the water ring vacuum pump, the two condensers are in a direct mixed structure, cooling water of the condensers and operating water of the water ring vacuum pump share one cooling tower, and the operating water of the water ring vacuum pump is subjected to circulating cooling through the shell-and-tube heat exchanger. The vacuum pumping device is reasonable in design and high in vacuum degree and cooling efficiency; the water ring vacuum pump operates in a best performance curve area, so that the water ring vacuum pump is stable in operation, not prone to scaling and capable of preventing from being corroded by tobacco impurities; and the vacuum pumping device has good economic benefits and market prospects after popularization.
Description
Technical field:
The utility model relates to the processing that grows tobacco and uses vacuum plant, relates in particular to the vacuum extractor in fields such as a kind of tobacco leaf vacuum conditioning that is applied to tobacco business, vacuum dehydration, vacuum cool-down dehumidifying.
Background technology:
Tobacco processing in documents and materials announcement at present and practical application is used in the vacuum system, mainly contains following type:
(1) mechanical vacuum pump assembly;
(2) steam sprays vacuum system;
(3) steam jet ejector+water jet vavuum pump group;
(4) steam jet ejector+water ring vacuum pump.
In tobacco business, the tactic pattern that vacuumizes of steam jet ejector+water ring vacuum pump is seldom used at present, and its reason mainly is that vacuum is low, the equipment fluctuation of service is reliable.For example in the complete paper " application of YGB-LP type vavuum pump in the tobacco leaf conditioning machine " of " tobacco science and technology " 04 phase leaf moral in 1989, point out: " water ring pump is easy scaling at work; the movement parts quick abrasion; make equipment after operation a period of time performance descend; vacuum instability; the working vacuum degree is usually below 96%, and cleaning and maintenance work are frequent ".For example contain jade at " tobacco science and technology " 05 phase stone in 1989 again, point out in the paper of Xue Xiewen " about problem and the corrective measure that exists in the vacuum conditioning technology ": " all adopting steam jet ejector-water ring vacuum pump to unite as the vacuum system of the used vacuum conditioner of domestic most of cigarette factories finds time; this system utilizes the water-ring vacuum pump speed height of finding time under low vacuum; the steam jet pump big characteristics of speed of finding time under high vacuum; get the evacuation system that the two length combines; be rational at matching way; but owing to do not fully take into account water ring pump performance stable factor inadequately during design, thereby cause its serviceability poor, vacuum descends fast.Former design vacuum is 20 holders, but can only reach 50～80 holders usually; And energy consumption height, efficient are low, and mechanical wear is big, and maintenance workload is big, and spare and accessory parts are changed frequent, have strengthened maintenance cost, have influenced ordinary production ".
In actual applications, traditional steam jet ejector-water ring vacuum pump associating unit only adopts the one-level steam jet pump, if water ring vacuum pump is when 180mmHg works, the suction vacuum of steam jet pump generally can only reach 18～20mmHg, far below 5～8mmHg of present industry employing.
In traditional steam jet ejector-water ring vacuum pump associating unit, condenser adopts tube shell type structure, tobacco impurity is bonded in the tubulation outer wall after using a period of time, cause that heat exchanger effectiveness sharply descends, thereby make the steam condensation insufficient and strengthen the live load of water ring pump even cause the water ring pump service behaviour to worsen, influence the normal use of water ring pump.Simultaneously since water ring pump directly suction contain the gas of tobacco impurity, cause the tobacco impurity concentration in the working water very high, the tobacco corrosion not only takes place, and crock is bonded in impeller surface easily and influences operate as normal.
The utility model content:
Technical problem to be solved in the utility model is: shortcomings such as job insecurity, the vacuum that overcomes prior art is low, maintenance is frequent, by technological improvement, a kind of tobacco leaf vacuum case vacuum extractor is provided, reaches vacuum height, stable and reliable operation, purpose that maintenance capacity is little.
The utility model is that the technical scheme that the technical solution problem is taked is:
A kind of tobacco leaf vacuum case vacuum extractor, contain vacuum tank, one-level steam jet pump, first condenser, second steam jet pump, second condenser and water ring vacuum pump, also comprise shell-and-tube heat exchanger, first water pump, second water pump, the 3rd water pump and cooling tower, above-mentioned each parts form gas passage, cooling-water duct and water ring pump cooling-water duct;
Described gas passage comprises vacuum tank, one-level steam jet pump, first condenser, second steam jet pump, second condenser and water ring vacuum pump, the exhaust outlet of described vacuum tank links to each other by the suction inlet of pipeline with the one-level steam jet pump, the outlet of described one-level steam jet pump links to each other with the air inlet of first condenser, the gas outlet of described first condenser is sprayed pump intake with second steam and is linked to each other, the outlet of described second steam jet pump links to each other with the air inlet of second condenser, and the exhaust outlet of described second condenser links to each other with the water ring vacuum pump air inlet;
Described cooling-water duct comprises cooling tower, first condenser, second condenser, first vacuum water tank, second vacuum water tank and second water pump, the delivery port of described cooling tower links to each other with first condenser, the second condenser water inlet respectively by pipeline, import with second water pump links to each other the delivery port of described first condenser and second condenser with second vacuum water tank by first vacuum water tank respectively, and the outlet of described second water pump links to each other with the water inlet of cooling tower by pipeline;
Described water ring pump cooling-water duct comprises water ring vacuum pump, cooling tower, the 3rd water pump and shell-and-tube heat exchanger, the delivery port of described cooling tower links to each other by the water inlet of pipeline with the 3rd water pump, the outlet of described the 3rd water pump links to each other with the shell side entrance of shell-and-tube heat exchanger, the shell side outlet of described shell-and-tube heat exchanger links to each other with the import of cooling tower, and the working water import of described water ring vacuum pump links to each other with the outlet of the tube side of shell-and-tube heat exchanger;
Described tobacco leaf vacuum case vacuum extractor also comprises steam-water separator, the gas outlet of described water ring vacuum pump links to each other with the air inlet of steam-water separator, the exhaust outlet of described steam-water separator and atmosphere UNICOM, the tube side import of described shell-and-tube heat exchanger links to each other with the delivery port of steam-water separator.
Be provided with water storage tank and first water pump between the water inlet of the delivery port of described cooling tower and first condenser and second condenser.
Be provided with filter between the shell side entrance of the delivery port of described cooling tower and shell-and-tube heat exchanger; The working water water inlet provided upstream of described water ring vacuum pump is equipped with the soft water treating apparatus.
The quantity of described water ring vacuum pump is one or more.
Positive beneficial effect of the present utility model is:
1, it is true to be connected water ring again after the utility model adopts the one-level steam jet pump and the second steam jet pump is connected
The mode of empty pump can improve the vacuum of tobacco leaf vacuum case, the operating pressure of reduction water ring vacuum pump, and then improves operating efficiency and the reliability of water ring vacuum pump.The maximum rate of air sucked in required of water ring vacuum pump approximately is that along with the rising of vacuum, rate of air sucked in required significantly reduces in pressure 180mmHg zone generally speaking.Specified exhaust capacity 20m
3The water ring vacuum pump of/min when the work water temperature reaches 30 degree, aspirates 20 ℃ of air, rates of air sucked in required and can only reach 16.5m when 180mmHg pressure
3/ min.Therefore adopt the structure of two-stage steam jet pump series connection, be conducive to water ring vacuum pump and work in best performance curve, the working vacuum degree of one-level steam jet pump can reach 5mmHg.
2, the working water of water ring vacuum pump is cooled off in the pipeline that cooling tower, shell-and-tube heat exchanger, water circulating pump are formed in the utility model, and the work water temperature stability fully guarantees job stability and the reliability of water ring vacuum pump.
3, the working water of water ring vacuum pump is softened processing by the soft water treating apparatus in the utility model, thereby has avoided the formation of incrustation scale to reduce maintenance load.
4, the utility model adopts shell-and-tube heat exchanger, and the cooling water of having avoided containing a large amount of tobacco impurity enters water ring vacuum pump, thereby has avoided the corrosiveness of tobacco impurity to water ring vacuum pump.
5, in the utility model, because the working water flow of water ring vacuum pump is less, therefore adopted the pipeline structure in parallel with cooling water system, utilize same cooling tower circulation cooling and the low water temperature of acquisition, save investment and operating cost, also saved the floor space of newly-increased cooling tower.
6, the mode that condenser adopts steam and cooling water directly to mix in the utility model has that cooling effectiveness height, circulating resistance are little, the steam condensation fully waits characteristics.
7, the utility model both can have been set up the vacuum system that new tobacco leaf humidification, dehydration, cool-down dehumidification are used, and also can the vacuum system of present relevant device be undergone technological transformation, and had good economic benefit and market prospects after the popularization.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
The specific embodiment:
Below in conjunction with drawings and Examples the utility model is described further:
Embodiment 1: referring to Fig. 1, a kind of tobacco leaf vacuum case vacuum extractor, contain vacuum tank 1, one-level steam jet pump 2, first condenser 3, second steam jet pump 4, second condenser 5, water ring vacuum pump 6, shell-and-tube heat exchanger 13, first water pump 10, second water pump 11, the 3rd water pump 14 and cooling tower 8, above-mentioned each parts form gas passage, cooling-water duct and water ring pump cooling-water duct;
Gas passage comprises vacuum tank 1, one-level steam jet pump 2, first condenser 3, second steam jet pump 4, second condenser 5 and water ring vacuum pump 6, the exhaust outlet of vacuum tank 1 links to each other by the suction inlet of pipeline with one-level steam jet pump 2, the outlet of one-level steam jet pump 2 links to each other with the air inlet of first condenser 3, the gas outlet of first condenser 3 links to each other with the suction inlet of second steam jet pump 4, the outlet of second steam jet pump 4 links to each other with second condenser, 5 air inlets, and the exhaust outlet of second condenser 5 links to each other with the air inlet of water ring vacuum pump 6;
Cooling-water duct comprises cooling tower 8, first condenser 3, second condenser 5, first vacuum water tank 17, second vacuum water tank 16 and second water pump 11, the delivery port of cooling tower 8 links to each other with first condenser 3, second condenser, 5 water inlets respectively by pipeline, first condenser 3 links to each other with the import of second water pump 11 with second vacuum water tank 16 by first vacuum water tank 17 respectively with the delivery port of second condenser 5, and the outlet of second water pump 11 links to each other by the water inlet of pipeline with cooling tower 8;
The water ring pump cooling-water duct comprises water ring vacuum pump 6, cooling tower 8, the 3rd water pump 14 and shell-and-tube heat exchanger 13, the delivery port of cooling tower 8 links to each other by the water inlet of pipeline with the 3rd water pump 14, the outlet of the 3rd water pump 14 links to each other with the shell side entrance of shell-and-tube heat exchanger 13, the shell side outlet of shell-and-tube heat exchanger 13 links to each other with the import of cooling tower 8, and the working water import of water ring vacuum pump 6 links to each other with the outlet of the tube side of shell-and-tube heat exchanger 13;
Between the water inlet of the delivery port of cooling tower 8 and first condenser 3 and second condenser 5, be provided with water storage tank 9 and first water pump 10, between the shell side entrance of the delivery port of cooling tower 8 and shell-and-tube heat exchanger 13, be provided with filter 12, be equipped with soft water treating apparatus 15 in the working water water inlet provided upstream of water ring vacuum pump 6.
As required: the quantity of water ring vacuum pump 6 can be one or more.
The workflow of this utility model is:
After tobacco leaf enters vacuum tank 1 and sealing, start water ring vacuum pump 6, gas in the vacuum tank 1, is finally discharged by the exhaust outlet of water ring vacuum pump 6 successively by one-level steam jet pump 2, first condenser 3, second steam jet pump 4, second condenser 5, water ring vacuum pump 6 along pipeline.When the vacuum in the vacuum tank 1 reaches first setting value, open second condenser 5 and second steam jet pump 4, when reaching second setting value again, open first condenser 3 and one-level steam jet pump 2, one-level steam jet pump 2, second steam jet pump 4 and water ring vacuum pump 6 series operations are evacuated to the working vacuum degree at this moment.
Cooling water from cooling tower 8 is temporary in the water storage tank 9, be divided into two-way during work, one the tunnel enters second condenser 5 and first condenser 3, respectively condensation is carried out in the work exhaust steam of second steam jet pump 4 and one-level steam jet pump 2, condensed hot water enters respectively in second vacuum water tank 16 and first vacuum water tank 17, sends cooling tower 8 coolings back to by second water pump 11 then; Another road enters in the shell-and-tube heat exchanger 13 through ducted filter 12, and the working water of water ring vacuum pump 6 is cooled off, and the water after the heat exchange is sent back in the cooling tower 8.
The circulation cooling in the pipeline of shell-and-tube heat exchanger 13, soft water treating apparatus 15 compositions of the working water of water ring vacuum pump 6, gas is separated out then, working water circulates the cooling use.
In the utility model, two-stage steam jet pump and water ring vacuum pump 6 series connection, two condensers adopt direct hybrid combination, and the working water of the cooling water of condenser and water ring vacuum pump 6 shares a cooling tower 8, and the working water of water ring vacuum pump 6 is through shell-and-tube heat exchanger 13 circulation coolings.The utility model is reasonable in design, vacuum is high, cooling effectiveness is high, and water ring vacuum pump 6 can be worked in the best performance curve zone, and working stability, less scaling can avoid being subjected to the corrosion of tobacco impurity.
Embodiment 2: referring to Fig. 2, the principle of present embodiment and composition structure are substantially the same manner as Example 1, something in common does not repeat, difference is: described tobacco leaf vacuum case vacuum extractor also comprises steam-water separator 7, the gas outlet of water ring vacuum pump 6 links to each other with the air inlet of steam-water separator 7, the exhaust outlet of steam-water separator 7 and atmosphere UNICOM, the tube side import of shell-and-tube heat exchanger 13 links to each other with the delivery port of steam-water separator 7.The circulation cooling in the pipeline that steam-water separator 7, shell-and-tube heat exchanger 13, soft water treating apparatus 15 are formed of the working water of water ring vacuum pump 6, when water ring vacuum pump 6 starts, the working water draining of water ring vacuum pump 6 enters steam-water separator 7 with the gas of suction, and gas is separated out then, working water circulates the cooling use.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction; every foundation technical spirit of the present utility model all still belongs within the protection domain of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment does.
Claims (5)
1. tobacco leaf vacuum case vacuum extractor, contain vacuum tank (1), one-level steam jet pump (2), first condenser (3), second steam jet pump (4), second condenser (5) and water ring vacuum pump (6), it is characterized in that: described tobacco leaf vacuum case vacuum extractor also comprises shell-and-tube heat exchanger (13), first water pump (10), second water pump (11), the 3rd water pump (14) and cooling tower (8), and above-mentioned each parts form gas passage, cooling-water duct and water ring pump cooling-water duct;
Described gas passage comprises vacuum tank (1), one-level steam jet pump (2), first condenser (3), second steam jet pump (4), second condenser (5) and water ring vacuum pump (6), the exhaust outlet of described vacuum tank (1) links to each other by the suction inlet of pipeline with one-level steam jet pump (2), the outlet of described one-level steam jet pump (2) links to each other with the air inlet of first condenser (3), the gas outlet of described first condenser (3) links to each other with the suction inlet of second steam jet pump (4), the outlet of described second steam jet pump (4) links to each other with the air inlet of second condenser (5), and the exhaust outlet of described second condenser (5) links to each other with water ring vacuum pump (6) air inlet;
Described cooling-water duct comprises cooling tower (8), first condenser (3), second condenser (5), first vacuum water tank (17), second vacuum water tank (16) and second water pump (11), the delivery port of described cooling tower (8) by pipeline respectively with first condenser (3), second condenser (5) water inlet links to each other, import with second water pump (11) links to each other the delivery port of described first condenser (3) and second condenser (5) with second vacuum water tank (16) by first vacuum water tank (17) respectively, and the outlet of described second water pump (11) links to each other by the water inlet of pipeline with cooling tower (8);
Described water ring pump cooling-water duct comprises water ring vacuum pump (6), cooling tower (8), the 3rd water pump (14) and shell-and-tube heat exchanger (13), the delivery port of described cooling tower (8) links to each other by the water inlet of pipeline with the 3rd water pump (14), the outlet of described the 3rd water pump (14) links to each other with the shell side entrance of shell-and-tube heat exchanger (13), and the shell side outlet of described shell-and-tube heat exchanger (13) links to each other with the import of cooling tower (8); The working water import of described water ring vacuum pump (6) links to each other with the tube side outlet of shell-and-tube heat exchanger (13).
2. tobacco leaf vacuum case vacuum extractor according to claim 1, it is characterized in that: described tobacco leaf vacuum case vacuum extractor also comprises steam-water separator (7), the gas outlet of described water ring vacuum pump (6) links to each other with the air inlet of steam-water separator (7), the exhaust outlet of described steam-water separator (7) and atmosphere UNICOM, the tube side import of described shell-and-tube heat exchanger (13) links to each other with the delivery port of steam-water separator (7).
3. tobacco leaf vacuum case vacuum extractor according to claim 2 is characterized in that: be provided with water storage tank (9) and first water pump (10) between the water inlet of the delivery port of described cooling tower (8) and first condenser (3) and second condenser (5).
4. tobacco leaf vacuum case vacuum extractor according to claim 3 is characterized in that: be provided with filter (12) between the shell side entrance of the delivery port of described cooling tower (8) and shell-and-tube heat exchanger (13); The working water water inlet provided upstream of described water ring vacuum pump (6) is equipped with soft water treating apparatus (15).
5. tobacco leaf vacuum case vacuum extractor according to claim 4 is characterized in that: the quantity of described water ring vacuum pump (6) is one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320209864 CN203167999U (en) | 2013-04-24 | 2013-04-24 | Vacuum pumping device for tobacco vacuum box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320209864 CN203167999U (en) | 2013-04-24 | 2013-04-24 | Vacuum pumping device for tobacco vacuum box |
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| Publication Number | Publication Date |
|---|---|
| CN203167999U true CN203167999U (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320209864 Expired - Fee Related CN203167999U (en) | 2013-04-24 | 2013-04-24 | Vacuum pumping device for tobacco vacuum box |
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| CN (1) | CN203167999U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106590788A (en) * | 2016-12-30 | 2017-04-26 | 北京健坤伟华新能源科技有限公司 | Ultralow-pressure swing adsorption biogas purifying device |
| CN108344221A (en) * | 2017-12-22 | 2018-07-31 | 佛山精迅能冷链科技有限公司 | A kind of vacuum precooling machine of adjustable governor pressure |
| CN110419758A (en) * | 2019-07-24 | 2019-11-08 | 河南中烟工业有限责任公司 | Cooling water recirculation system and vacuum conditioner |
| CN115607698A (en) * | 2022-10-20 | 2023-01-17 | 张家港市环宇制药设备有限公司 | Steam-water separation and discharge device for sterilization cabinet |
-
2013
- 2013-04-24 CN CN 201320209864 patent/CN203167999U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106590788A (en) * | 2016-12-30 | 2017-04-26 | 北京健坤伟华新能源科技有限公司 | Ultralow-pressure swing adsorption biogas purifying device |
| CN108344221A (en) * | 2017-12-22 | 2018-07-31 | 佛山精迅能冷链科技有限公司 | A kind of vacuum precooling machine of adjustable governor pressure |
| CN108344221B (en) * | 2017-12-22 | 2024-05-28 | 佛山精迅能冷链科技有限公司 | Vacuum precooler capable of regulating pressure |
| CN110419758A (en) * | 2019-07-24 | 2019-11-08 | 河南中烟工业有限责任公司 | Cooling water recirculation system and vacuum conditioner |
| CN115607698A (en) * | 2022-10-20 | 2023-01-17 | 张家港市环宇制药设备有限公司 | Steam-water separation and discharge device for sterilization cabinet |
| CN115607698B (en) * | 2022-10-20 | 2024-04-19 | 张家港市环宇制药设备有限公司 | Steam-water separation and discharge device for sterilizing cabinet |
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Granted publication date: 20130904 Termination date: 20180424 |
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