CN205435029U - Automatic drain of vacuum system condenser - Google Patents
Automatic drain of vacuum system condenser Download PDFInfo
- Publication number
- CN205435029U CN205435029U CN201521050299.8U CN201521050299U CN205435029U CN 205435029 U CN205435029 U CN 205435029U CN 201521050299 U CN201521050299 U CN 201521050299U CN 205435029 U CN205435029 U CN 205435029U
- Authority
- CN
- China
- Prior art keywords
- ball valve
- pneumatic ball
- condenser
- vacuum system
- draining device
- 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
Links
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to an automatic drain of vacuum system condenser, its including the ji yecang that lies in condenser below, lie in the recovery storehouse of collection liquid storehouse below, be located ji yecang with retrieve level sensor and a set of pneumatic ball valve between the storehouse, this pneumatic ball valve is located level sensor with retrieve between the storehouse PLC control system basis level sensor detects the condensate liquid level real time control of position a set of pneumatic ball valve makes the condensate quilt it retrieves automatically in time to retrieve the storehouse. This kind of automatic drain of vacuum system condenser makes the condensate of vacuum system condenser in time automatically to be got rid of, has guaranteed the stability of system's vacuum, has improved the efficiency of system's desorption condensate, can retrieve the condensate of as much as possible's high -purity again to the system is simple, and is with low costs, and it is convenient to maintain.
Description
Technical field
This utility model generally relates to the pumping equipment field of condenser, is specifically related to the automatic draining device of a kind of vacuum system condenser.
Background technology
Along with the fast development of China's industrial and agricultural production, the usage quantity of organic solvent is the most increasing.The daily organic solvent amount of some integrated mills is 3 to 4 tons, and medium factory is 1 to 2 ton, the most hundreds of kilogram of midget plant.Type is different but all uses factory's such as container plant of organic solvent, copper-clad plate factory, plastic printing factory, Furniture Factory, chemical fibre factory etc., nationwide.
Containing the carcinogen such as benzene,toluene,xylene, chloralkane in the organic solvent used, no matter it is to volatilize in indoor or in outdoor, all the mankind and animals and plants can be brought harm.The aldehydes that evaporate in air, alkene, aromatic hydrocarbon equal solvent gas, under the effect of sunlight, can react generation acid fume mist, photochemical fog etc. the troposphere (from ground to 10km height) of air.Chlorofluoro-alkane etc. can loss to atmospheric advection layer (top, troposphere to 50km height), with ozone reaction (ozone is played catalyticing decomposition action by chlorine) under the effect of sunlight, reduce ozone concentration, reduce ozone layer and absorb acting on thus the reduction shielding action to earth generation of solar ultraviolet, and also the substantial amounts of greenhouse gases harm mankind and animals and plants can be produced.
Solvent gas in some mixed gas is single, concentration the highest (during such as the gasoline cistern charge of oil of gas station in summer, the only gasoline vapour that its gas outlet ejects), and its saturated vapour pressure variation with temperature is the biggest.Generally this kind organic solvent needs to react in a kettle. or be heated and be allowed under certain condition evaporate, then is recovered through condensation.Mixed gas after this kind of condensation technology will evaporate carries out cooling condensation by condenser, and solvent can become liquid from mixed gas and separate.Using this method institute recovered solvent purity the highest, being not added with other process can use.In order to reduce solution boiling point, improving evaporation efficiency, vaporizer is operated the most under vacuum conditions.Make the particle body such as material gasification or formation by methods such as vacuum evaporation, heating, high-frequency inductions, be then quenched.It is characterized in that purity is high, crystalline structure is good, granularity is controlled, and the boiling point of material solution under vacuo reduces, and makes the driving force of heat transfer of vaporizer increase, therefore certain heat output can be saved the heat transfer area of vaporizer.
But, during utilizing existing vacuum system removing organic solvent, the organic solvent condensed out in a large number can be produced in the catch box of condensing unit, in the case of system vacuum is higher, the organic solvent condensed out has part and again volatilizees, until it reaches the saturated vapor pressure under prevailing condition.The gas that so pumped vacuum systems is extracted out can carry substantial amounts of gaseous state organic solvent, not only wastes organic solvent, is also easy to pollutant atmosphere.The existence of the liguid organic solvent owing to condensing out in a large number, also can affect to the vacuum of pumped vacuum systems.
Therefore, it is necessary to propose the automatic draining device of a kind of vacuum system condenser, condensed fluid can be got rid of timely automatedly, both ensure that the vacuum of system, improve the efficiency of system removing organic solvent, highly purified organic solvent as much as possible can be reclaimed again, decrease the organic solvent entering air simultaneously, reduce and pollute.
Utility model content
The purpose of this utility model is to provide the automatic draining device of a kind of vacuum system condenser, the automatic draining device of this kind of vacuum system condenser can get rid of condensed fluid in time, both ensure that the vacuum of system, highly purified organic solvent as much as possible can have been reclaimed again.
This utility model provides the automatic draining device of a kind of vacuum system condenser, and it includes liquid-collecting bin, is positioned at the lower section of condenser and communicates therewith；Recovery bin, is positioned at the lower section of described liquid-collecting bin for reclaiming organic solvent from liquid-collecting bin；Liquid level sensor, it is between described liquid-collecting bin and described recovery bin；It is characterized in that, also include one group of pneumatic ball valve, it is between described liquid level sensor and described recovery bin, according to described liquid level sensor, PLC control system detects that the level of condensate of position controls described one group of pneumatic ball valve in real time so that condensed fluid is reclaimed the most in time by described recovery bin.
Further, the automatic draining device of above-mentioned vacuum system condenser, described liquid-collecting bin has top and bottom, and described liquid-collecting bin extends to lower end from upper end, and for accommodating the closed cavity of liquid between top and bottom, the lower end section of this cavity is gradually reduced.
Further, the automatic draining device of above-mentioned vacuum system condenser, the upper end of described liquid-collecting bin is connected with the lower leakage fluid dram of condenser by pipeline.
Further, the automatic draining device of above-mentioned vacuum system condenser, described recovery bin has the top of opening and the bottom of sealing, and described recovery bin extends to bottom from top, for accommodating the cavity volume of condensed fluid between this top and bottom.
Further, the automatic draining device of above-mentioned vacuum system condenser, the top of described recovery bin is removably connected connection with the lower end of described liquid-collecting bin by pipeline.
Further, the automatic draining device of above-mentioned vacuum system condenser, described liquid level sensor is installed on the pipeline between described liquid-collecting bin and described recovery bin, in real time detection liquid level real-time Transmission signal.
Further, the automatic draining device of above-mentioned vacuum system condenser, described one group of pneumatic ball valve includes that the first pneumatic ball valve and the second pneumatic ball valve, described first pneumatic ball valve and described second pneumatic ball valve are sequentially installed between described liquid level sensor and described recovery bin.
Further, the automatic draining device of above-mentioned vacuum system condenser, described liquid level sensor, described first pneumatic ball valve and described second pneumatic ball valve all electrically connect with PLC control system.
Further, the automatic draining device of above-mentioned vacuum system condenser, under vacuum conditions, according to described liquid level sensor, PLC control system detects that the level of condensate of position controls the opening and closing in turn of the first pneumatic ball valve and the second pneumatic ball valve in real time so that the condensed fluid between the first pneumatic ball valve and the second pneumatic ball valve is reclaimed the most in time by described recovery bin.
Further, the automatic draining device of above-mentioned vacuum system condenser, when described first pneumatic ball valve is closed, and described second pneumatic ball valve is in open mode, the condensed fluid between described first pneumatic ball valve and described second pneumatic ball valve is discharged into described recovery bin；When described first pneumatic ball valve is in open mode, and described second pneumatic ball valve is closed, condensed fluid condenser flows into the pipeline enclosure between described liquid-collecting bin and described liquid-collecting bin and described second ball valve.
The beneficial effects of the utility model are, the automatic draining device of this kind of vacuum system condenser, utilize the PLC control system transmission signal real-time response to liquid level sensor, by the open and close controlling of one group of pneumatic ball valve is got rid of condensed fluid in time, both ensure that the vacuum of system, and improve the efficiency of system removing organic solvent, highly purified organic solvent as much as possible can be reclaimed again, decrease the organic solvent entering air simultaneously, reduce and pollute；And this system is simple, low cost of manufacture is easy to maintenance, easily operates, it is achieved that Automatic Control, eliminates manually-operated complicated, eliminates the organic solvent that frequently may be contacted device by manual operation and the cause infringement to personnel health.
Accompanying drawing explanation
Fig. 1 is the structural representation of the automatic draining device of a kind of vacuum system condenser of this utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in more details, so as to the advantage being more fully understood that scheme of the present utility model and its various aspects.But, specific embodiments described below and embodiment are only descriptive purposes rather than to restriction of the present utility model.
As it is shown in figure 1, the automatic draining device of a kind of vacuum system condenser of this utility model embodiment, including reactor 1, for the airtight cavity with discharging opening, it is connected with condenser 2 by pipeline；The upper air vent 21 of condenser 2 is connected with electromagnetic valve 3 and check valve 4 in turn, is then connected with pumped vacuum systems 5 by pipeline；The lower leakage fluid dram 22 of condenser connects liquid-collecting bin 6 by pipeline；Liquid-collecting bin 6 is mainly used to collect the liquid organic solvent condensed out by condenser 2, connects recovery bin 9 by pipeline, is sequentially installed with 7, one group of pneumatic ball valve 8 of liquid level sensor between liquid-collecting bin 6 and recovery bin 9.
Structure and the function of each several part of the automatic draining device of this kind vacuum system condenser are described further below.
Reactor 1, has the container physically or chemically reacted, by designing the structure of container and parameter configuration, it is achieved the heating of technological requirement, evaporates, cool down and the mixture function of low high speed.Reactor can use stainless steel material manufacture.It is the vaporizer of ORGANIC SOLVENT MIXTURES in this embodiment.
Condenser 2, for the parts of refrigeration system, belongs to the one of heat exchanger, gas or steam can be transformed into liquid, by the heat in container, in the way of quickly, passes in the air near container.The work process of condenser 2 is the process of a heat release.Condenser 2 is used for condensing the organic solvent gas come from reactor 1 through pipeline diffusion in this embodiment.
Electromagnetic valve 3 and check valve 4 belong to duct element, are used for realizing the opening and closing of pipeline, and added check valve 4 can realize the one-way flow of object in pipeline.These two kinds of duct elements jointly act on and can make vacuum one-way flow outward in system in this embodiment, it is to avoid vacuum flows backwards and destroys the vacuum of system.
Pumped vacuum systems 5 is typically provided with vacuum pump, is connected by pipeline and intrasystem air pressure is extracted into vacuum state.
Except above-mentioned part, the main discharge portion of this automatic draining device includes: liquid-collecting bin 6, and it is positioned at the lower section of condenser 2；Recovery bin 9, it is positioned at the lower section of described liquid-collecting bin 6；Liquid level sensor 7, it is between described liquid-collecting bin 6 and described recovery bin 9；It is characterized in that, also include one group of pneumatic ball valve 8, it is between described liquid level sensor 7 and described recovery bin 9, according to described liquid level sensor 7, the PLC control system of this automatic draining device detects that the level of condensate of position controls described one group of pneumatic ball valve 8 in real time so that condensed fluid is reclaimed automatically in time by described recovery bin 9.
Further, the automatic draining device of above-mentioned vacuum system condenser, described liquid-collecting bin 6 has upper end 61 and lower end 62, and described liquid-collecting bin 6 extends to lower end 62 from upper end 61, for accommodating the closed cavity 63 of liquid between upper end 61 and lower end 62, this cavity 63 section in lower end 62 is gradually reduced.
Further, the automatic draining device of above-mentioned vacuum system condenser, the upper end 61 of described liquid-collecting bin 6 is connected with the lower leakage fluid dram 22 of condenser 2 by pipeline.
Further, the automatic draining device of above-mentioned vacuum system condenser, described recovery bin 9 has top 91 and the bottom 92 of sealing of opening, and described recovery bin 9 extends to bottom 92 from top 91, for accommodating the cavity volume 93 of condensed fluid between this top 91 and bottom 92.
Further, the automatic draining device of above-mentioned vacuum system condenser, the top 91 of described recovery bin 9 is removably connected with the lower end 62 of described liquid-collecting bin by pipeline.
Further, the automatic draining device of above-mentioned vacuum system condenser, described liquid level sensor 7 is installed on the pipeline between described liquid-collecting bin 6 and described recovery bin 9, and detection liquid level real-time Transmission signal are to PLC control system in real time.Liquid level sensor is divided into two classes: a class is contact, including single flange static pressure/bis-flange differential pressure liquid levelTransmitter, float ball type level transducer etc., Equations of The Second Kind is contactless, is divided into supersonic level sensor, radar level transmitter etc..Select static pressure throw-in type liquid transmitter in this embodiment, both ensure that the watertightness of sensor, and made again reference pressure chamber communicate with ambient pressure, thus ensure that high accuracy and the high stability of measurement.
Further, the automatic draining device of above-mentioned vacuum system condenser, described one group of pneumatic ball valve 8 includes that the first pneumatic ball valve 81 and the second pneumatic ball valve 82, described first pneumatic ball valve 81 and described second pneumatic ball valve 82 are sequentially installed between described liquid level sensor 7 and described recovery bin 9.Pneumatic ball valve is to be furnished with pneumatic actuator on ball valve.The execution speed of pneumatic actuator is relatively fast, the fastest switching speed 0.05 second/time, so being generally also pneumatic fast cut-off ball valve.The operation principle of pneumatic ball valve is to make valve unimpeded or inaccessible by rotary spool.Pneumatic ball valve simple in construction, volume is little, lightweight；The sealing surface of ball valve mainly makes made of plastic at present, good airproof performance, and sealing surface and sphere are often at closure state, are difficult to by medium erosion；Pneumatic ball valve is easy to maintenance, and sealing ring is typically all movable, and dismounting and change is the most more convenient；And pneumatic ball valve is applied widely, latus rectum from little to several millimeter, big to several meters, all can be applied from fine vacuum to high pressure.The most in the present embodiment, the switch element discharging condensed fluid selects this to organize pneumatic ball valve.
Further, the automatic draining device of above-mentioned vacuum system condenser, described liquid level sensor 7, described first pneumatic ball valve 81 and described second pneumatic ball valve 82 all electrically connect with PLC control system.
Further, the automatic draining device of above-mentioned vacuum system condenser, under vacuum conditions, according to described liquid level sensor 7, PLC control system detects that the level of condensate of position controls the first pneumatic ball valve 81 and opening and closing in turn of the second pneumatic ball valve 82 in real time so that the condensed fluid between the first pneumatic ball valve 81 and the second pneumatic ball valve 82 is reclaimed automatically in time by described recovery bin 9.
Further, the automatic draining device of above-mentioned vacuum system condenser, when described first pneumatic ball valve 81 is closed, when described second pneumatic ball valve 82 is in open mode, the condensed fluid between described first pneumatic ball valve 81 and described second pneumatic ball valve 82 is discharged into described recovery bin 9；When described first pneumatic ball valve 81 is in open mode, and described second pneumatic ball valve 82 is closed, condensed fluid condenser 2 flows into the pipeline enclosure between described liquid-collecting bin 6 and described liquid-collecting bin 6 and described second ball valve 82.
The discharge opeing process of the automatic draining device of this kind of vacuum system condenser be briefly described into:
Reactor 1 by self function and the vacuum action of pumped vacuum systems 5, can make the organic solvent being mixed with in material in reactor 1 volatilize rapidly, and wherein electromagnetic valve 3 and check valve 4 are to prevent gas backflow, it is ensured that the vacuum of system.The organic solvent evaporated can condense into liquid when through condenser 2, flows in liquid-collecting bin 6.The original state of the first pneumatic ball valve 81 and the second pneumatic ball valve 82 is unlatching.After system is extracted into certain vacuum, when starting liquid organic solvent condensation occur in condenser, the second pneumatic ball valve 82 is first closed by PLC control system.After system runs a period of time, when liquid level sensor 7 detects that there is liquid level position, first close the first pneumatic ball valve 81 be then turned on the second pneumatic ball valve 82, the so condensed fluid between the first pneumatic ball valve 81 and the second pneumatic ball valve 82 can flow into receipts storehouse 9 in.After all flowing into recovery bin 9 Deng the condensed fluid between the first pneumatic ball valve 81 and the second pneumatic ball valve 82, first close the second pneumatic ball valve 82 and be then turned on the first pneumatic ball valve 81, so when liquid level sensor 7 detects the liquid level of position again, repeat above-mentioned first pneumatic ball valve 81 and the opening and closing operations of the second pneumatic ball valve 82 so that the condensed fluid between the first pneumatic ball valve 81 and the second pneumatic ball valve 82 again flows into recovery bin 9.System is so constantly run repeatedly, until the organic solvent content of material is discharged to required numerical value in reactor 1.
The execution effect of the present embodiment is, the automatic draining device of this kind of vacuum system condenser, utilize the PLC control system transmission signal real-time response to liquid level sensor, by the open and close controlling of one group of pneumatic ball valve is got rid of condensed fluid in time, both ensure that the vacuum of system, and improve the efficiency of system removing organic solvent, highly purified organic solvent as much as possible can be reclaimed again, decrease the organic solvent entering air simultaneously, reduce and pollute；And this system is simple, low cost of manufacture, easy to maintenance, easily operate, it is achieved that Automatic Control, eliminate manually-operated complicated, eliminate the infringement that may frequently be contacted organic solvent that device causes by manual operation to personnel health.
It is last that it is noted that obviously above-described embodiment is only for clearly demonstrating this utility model example, and not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And the obvious change thus amplified out or variation still in protection domain of the present utility model among.
Claims (8)
1. an automatic draining device for vacuum system condenser, it includes
Liquid-collecting bin, is positioned at the lower section of condenser and communicates therewith；
Recovery bin, is positioned at the lower section of described liquid-collecting bin for reclaiming organic solvent from liquid-collecting bin；
Liquid level sensor, it is between described liquid-collecting bin and described recovery bin；It is characterized in that, also include one group of pneumatic ball valve, it is between described liquid level sensor and described recovery bin, according to described liquid level sensor, PLC control system detects that the level of condensate of position controls that group pneumatic ball valve described in real time so that condensed fluid is reclaimed the most in time by described recovery bin.
2. the automatic draining device of vacuum system condenser as claimed in claim 1, it is characterized in that, described liquid-collecting bin has top and bottom, and described liquid-collecting bin extends to lower end from upper end, for accommodating the closed cavity of liquid between top and bottom, the lower end section of this cavity is gradually reduced.
3. the automatic draining device of vacuum system condenser as claimed in claim 1, it is characterised in that the upper end of described liquid-collecting bin is connected with the lower leakage fluid dram of condenser by pipeline.
4. the automatic draining device of vacuum system condenser as claimed in claim 1, it is characterised in that described recovery bin has the top of opening and the bottom of sealing, and described recovery bin extends to bottom from top, for accommodating the cavity volume of condensed fluid between this top and bottom.
5. the automatic draining device of the vacuum system condenser as described in claim 1 or 2 or 4, it is characterised in that the top of described recovery bin is removably connected with the lower end of described liquid-collecting bin by pipeline.
6. the automatic draining device of vacuum system condenser as claimed in claim 1, it is characterised in that described liquid level sensor is installed on the pipeline between described liquid-collecting bin and described recovery bin, in real time detection liquid level real-time Transmission signal.
7. the automatic draining device of vacuum system condenser as claimed in claim 1, it is characterized in that, that group pneumatic ball valve described includes that the first pneumatic ball valve and the second pneumatic ball valve, described first pneumatic ball valve and described second pneumatic ball valve are sequentially installed between described liquid level sensor and described recovery bin.
8. the automatic draining device of vacuum system condenser as claimed in claim 7, it is characterised in that described liquid level sensor, described first pneumatic ball valve and described second pneumatic ball valve all electrically connect with PLC control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521050299.8U CN205435029U (en) | 2015-12-14 | 2015-12-14 | Automatic drain of vacuum system condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521050299.8U CN205435029U (en) | 2015-12-14 | 2015-12-14 | Automatic drain of vacuum system condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205435029U true CN205435029U (en) | 2016-08-10 |
Family
ID=57181203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521050299.8U Expired - Fee Related CN205435029U (en) | 2015-12-14 | 2015-12-14 | Automatic drain of vacuum system condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205435029U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107308677A (en) * | 2017-07-27 | 2017-11-03 | 大连维钛克科技股份有限公司 | A kind of Full-automatic cold condensate recovery device for hydrocarbon cleaning machine high vacuum system |
| CN108380138A (en) * | 2018-04-13 | 2018-08-10 | 浙江国森精细化工科技有限公司 | A kind of retracting device of the reaction kettle of environment-friendlyacrylic acrylic acid esters adhesive production |
| CN114146442A (en) * | 2021-12-14 | 2022-03-08 | 中国船舶重工集团公司第七0三研究所 | Vacuum rotational flow exchange device and control method thereof |
-
2015
- 2015-12-14 CN CN201521050299.8U patent/CN205435029U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107308677A (en) * | 2017-07-27 | 2017-11-03 | 大连维钛克科技股份有限公司 | A kind of Full-automatic cold condensate recovery device for hydrocarbon cleaning machine high vacuum system |
| CN108380138A (en) * | 2018-04-13 | 2018-08-10 | 浙江国森精细化工科技有限公司 | A kind of retracting device of the reaction kettle of environment-friendlyacrylic acrylic acid esters adhesive production |
| CN114146442A (en) * | 2021-12-14 | 2022-03-08 | 中国船舶重工集团公司第七0三研究所 | Vacuum rotational flow exchange device and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205435029U (en) | Automatic drain of vacuum system condenser | |
| CN203139670U (en) | Fragrance recycling device for ossein maillard reaction | |
| CN201578867U (en) | Solution concentration device | |
| CN202440010U (en) | Storage tank for volatile liquid materials | |
| CN110102072A (en) | Hypergravity rectifying couples the device and control method of decompression separation methanol-water with reacting | |
| CN202705075U (en) | Low-temperature evaporating, condensing and liquefying circulatory device | |
| CN202546730U (en) | Atmospheric deoxidation system capable of recovering exhaust steam | |
| CN204953521U (en) | Double -phase extraction prosthetic devices of box complete set soil underground water pollution | |
| CN202464526U (en) | Storage tank with liquid seal respiration valve and condensing and recycling device | |
| CN214106348U (en) | Ethylene oxide-containing tail gas recovery equipment | |
| CN207101945U (en) | A kind of anticorrosive paint process steam formula condenser device | |
| CN205300299U (en) | Device of noncondensable gas in vertical condenser of desorption | |
| CN209204703U (en) | A kind of reduced steam circulation distilling apparatus | |
| CN204201480U (en) | A kind of accumulator tank Waste resources reused utilizes environmental protecting device | |
| CN207958241U (en) | Organic matter carbonization system | |
| CN205860802U (en) | A kind of low-pressure steam partition condensing unit | |
| WO2020108230A1 (en) | Integrated treatment system and treatment method for organic exhaust gas from thermal desorption of contaminated soil | |
| CN203054492U (en) | Intelligent thermal system steam energy saving control device | |
| CN207850110U (en) | A kind of steam condensate recovering device | |
| CN202199141U (en) | Vacuum plant for recycling solvent | |
| CN106621424A (en) | Wastewater treater | |
| CN205874123U (en) | Recovery processing device of hydrazine hydrate waste liquid | |
| CN219689394U (en) | Chemical waste liquid solidification drying device | |
| CN212673873U (en) | Environment-friendly vacuum device for condensing non-condensable gas | |
| CN203595437U (en) | Sulfuric acid vacuum heat recovery cooler |
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: 20160810 Termination date: 20161214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |