CN218842215U - Vacuum system of low-temperature vacuum dryer - Google Patents
Vacuum system of low-temperature vacuum dryer Download PDFInfo
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- CN218842215U CN218842215U CN202222966780.8U CN202222966780U CN218842215U CN 218842215 U CN218842215 U CN 218842215U CN 202222966780 U CN202222966780 U CN 202222966780U CN 218842215 U CN218842215 U CN 218842215U
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Abstract
The utility model relates to a low temperature vacuum drier vacuum system, including the workstation module, receive the fluid reservoir module, the fluid-discharge tank, the vacuum pump module, exhaust module and heating module, the workstation module is connected with the heating module and realizes the heating, the export of workstation module and the access connection who receives the fluid reservoir module, the liquid phase export of receiving the fluid reservoir module is connected with the fluid-discharge tank, the gaseous phase export of receiving the fluid reservoir module and the access connection of vacuum pump module, the export and the exhaust module of vacuum pump module are connected, be equipped with preceding stage condensation unit in the export of workstation module, be equipped with the medium level condensation unit on receiving the fluid reservoir module, the import and the gaseous phase export of receiving the fluid reservoir module all are located and receive fluid reservoir module upper portion, the liquid phase export of receiving the fluid reservoir module is located and receives the fluid reservoir module bottom, the medium level condensation unit sets up on receiving fluid reservoir module upper portion; the utility model provides high condensation effect, the high-usage of intermediate level condensation unit.
Description
Technical Field
The utility model relates to a vacuum drying technical field especially relates to a low temperature vacuum drying machine vacuum system.
Background
Leather manufacturing in the leather-making process, it is necessary to reduce the moisture content of the leather from 60% to 75% to 16% to 18% after wet processing, and the solvents and water brought in during the moisturizing process also need to be removed. At present, leather factories at home and abroad commonly adopt an evaporation drying method, namely, moisture or solvent in leather is firstly changed into steam, and then the steam is driven away. The vacuum drier is the main equipment for evaporation drying method, and supplies enough heat to leather by heat source through conduction heating mode under vacuum state, so that the water is evaporated and boiled, and the vaporization speed is accelerated. Meanwhile, the vaporized steam is quickly pumped out by vacuumizing, a negative pressure state is formed around the leather, and a large humidity gradient is formed between the inner layer and the outer layer of the leather and between the surface of the leather and surrounding media, so that the vaporization speed is increased, and the aim of quickly drying is fulfilled.
The Chinese utility model patent with publication number CN210683817U provides a leather vacuum drying control system, which ensures that the vacuum platen realizes independent vacuum pumping and pollution discharge functions in the processes of vacuum pumping and pollution discharge to avoid blockage by respectively arranging independent vacuum pumping channels and pollution discharge channels on two sides of a platform unit; in addition, a pre-cooling channel is arranged in the vacuumizing channel, and the vacuumizing channel and the blowdown vacuum channel can be pre-cooled simultaneously through cooling water in the pre-cooling channel, so that the cooling effect of the subsequent process is ensured; and meanwhile, the condensation module is arranged on the external pipeline, so that secondary cooling can be performed, and the cooling effect is improved.
However, the vacuum drying control system still has some defects, when primary vacuum pumping is carried out, the oil ring pump is usually started to carry out vacuum pumping operation, the roots pump is not started in the process, water vapor in the working table plate is only subjected to pre-cooling treatment through the pre-cooling channel, liquid and vapor enter the liquid receiving tank unit, the liquid is discharged into the liquid discharging tank through the one-way valve, the vapor enters the oil ring pump and then is discharged from the exhaust tank after entering the liquid collecting tank, the condensation effect is poor, when the vacuum degree reaches a certain degree to start the roots pump to strengthen vacuum pumping, a water body is subjected to secondary cooling through the condensation module after being subjected to pre-cooling, the condensation module adopts two condensers, the condensation effect when the roots pump is started can only be ensured, and the utilization rate of the condensers is low.
Therefore, the utility model provides a low temperature vacuum drying machine vacuum system solves above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a low temperature vacuum drying machine vacuum system promotes the condensation effect, improves condensation equipment utilization ratio.
In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a low temperature vacuum drying machine vacuum system which innovation point lies in: the device comprises a workbench module, a liquid receiving tank module, a liquid discharging tank, a vacuum pump module, an exhaust module and a heating module;
the workbench module is connected with the heating module to realize heating, an outlet of the workbench module is connected with an inlet of the liquid collecting tank module, a liquid phase outlet of the liquid collecting tank module is connected with the liquid discharging groove, a gas phase outlet of the liquid collecting tank module is connected with an inlet of the vacuum pump module, and an outlet of the vacuum pump module is connected with the exhaust module;
the liquid-phase separation device is characterized in that a preceding stage condensation unit is arranged in an outlet of the workbench module, a middle stage condensation unit is arranged on the liquid collecting tank module, an inlet and a gas phase outlet of the liquid collecting tank module are both positioned on the upper portion of the liquid collecting tank module, a liquid phase outlet of the liquid collecting tank module is positioned at the bottom of the liquid collecting tank module, and the middle stage condensation unit is arranged on the upper portion of the liquid collecting tank module.
Furthermore, the workbench module comprises a plurality of overlapped workbenches, a vacuum pipeline is arranged on the outer side of each workbench, and the preceding stage condensation unit is arranged in the vacuum pipeline;
the liquid collecting tank module comprises a plurality of liquid collecting tanks which correspond to the working tables one by one, the vacuum pipeline outlet of each working table is connected with the inlet of the corresponding liquid collecting tank through a first pipeline, the liquid phase outlet of each liquid collecting tank is connected with the liquid discharging groove through a second pipeline, and the gas phase outlet of each liquid collecting tank is connected with a third pipeline;
the vacuum pump module comprises an oil ring pump, a first condenser and a roots pump, third pipelines of all liquid receiving tanks are connected in parallel and then connected with the oil ring pump through fourth pipelines, the first condenser is connected with the fourth pipelines through a fifth pipeline and connected with the liquid receiving tank module in parallel, the first condenser is connected with the roots pump through a sixth pipeline, the roots pump is connected with the oil ring pump through a seventh pipeline, the first condenser is connected with a second liquid collecting tank through a sixteenth pipeline, and the second liquid collecting tank is connected with a liquid discharge tank through a seventeenth pipeline;
the exhaust module comprises a first liquid collecting tank and an exhaust tank, the oil ring pump is connected with the first liquid collecting tank through an eighth pipeline, and the first liquid collecting tank is connected with the exhaust tank through a ninth pipeline.
Furthermore, the middle-stage condensing unit comprises a plurality of cooling pipes which correspond to the liquid collecting tanks one to one, and the cooling pipes are connected in series and are connected with an external cooling water source to form a cooling water circulation loop.
Further, the vacuum pump module further comprises a second condenser, a circulating oil pump and an oil storage tank, the oil ring pump is connected with the second condenser through a tenth pipeline, the second condenser is connected with the circulating oil pump through an eleventh pipeline, the circulating oil pump is connected with the oil storage tank through a twelfth pipeline, the oil storage tank is connected with a liquid discharge tank through a thirteenth pipeline and is connected with the first liquid collecting tank through a fourteenth pipeline, and the exhaust tank is connected with the fourteenth pipeline through a fifteenth pipeline.
Further, the second pipeline, the third pipeline, the fourth pipeline, the thirteenth pipeline and the seventeenth pipeline are all connected with one-way valves.
The utility model has the advantages that:
the utility model discloses a through set up the intermediate level condensation unit on receiving the fluid reservoir, when only starting oil ring pumping vacuum, gas in the workstation module is after the condensation of preceding stage condensation unit, get into and carry out the secondary condensation by the intermediate level condensation unit in receiving the fluid reservoir module, condensation effect has effectively been improved, after the vacuum degree reaches a certain degree, start the lobe pump and strengthen the evacuation, gas can be after the condensation of preceding stage condensation unit equally, get into and carry out the secondary condensation by the intermediate level condensation unit in receiving the fluid reservoir module, then carry out the cubic condensation through first condenser again, thereby reach condensation effect, the intermediate level condensation unit high-usage.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic connection diagram of the vacuum system of the low-temperature vacuum dryer of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the vacuum system of a low-temperature vacuum dryer comprises a workbench module, a liquid collecting tank module, a liquid discharging tank, a vacuum pump module, an exhaust module and a heating module 34;
the workbench module comprises a plurality of overlapped workbenches 21, a vacuum pipeline is arranged on the outer side of each workbench 21, a preceding stage condensation unit is arranged in the vacuum pipeline, each workbench 21 is connected with a heating module 34, and each workbench 21 is heated by the heating module 34; the liquid collecting tank module comprises a plurality of liquid collecting tanks 22 which are in one-to-one correspondence with the working tables 21, the vacuum pipeline outlet of each working table 21 is connected with the inlet of the corresponding liquid collecting tank 22 through a first pipeline 1, the liquid phase outlet of the liquid collecting tank 22 is connected with a liquid discharge groove 24 through a second pipeline 2, and the gas phase outlet of the liquid collecting tank 22 is connected with a third pipeline 3; the vacuum pump module comprises an oil ring pump 25, a first condenser 26 and a roots pump 27, third pipelines 3 of all liquid collecting tanks 22 are connected in parallel and then are connected with the oil ring pump 25 through fourth pipelines 4, the first condenser 26 is connected with the fourth pipelines 4 through fifth pipelines 5 and is connected with the liquid collecting tank module in parallel, the first condenser 26 is connected with the roots pump 27 through a sixth pipeline 6, the roots pump 27 is connected with the oil ring pump 25 through a seventh pipeline 7, the first condenser 26 is connected with a second liquid collecting tank 31 through a sixteenth pipeline 16, and the second liquid collecting tank 31 is connected with a liquid discharge tank 24 through a seventeenth pipeline 17; the exhaust module comprises a first liquid collecting tank 32 and an exhaust tank 33, the outlet of the oil ring pump is connected with the first liquid collecting tank 32 through an eighth pipeline 8, and the first liquid collecting tank 32 is connected with the exhaust tank 33 through a ninth pipeline 9.
Receive and be equipped with the intermediate level condensation unit on the fluid reservoir module, the intermediate level condensation unit includes a plurality of and receives the cooling tube 23 of fluid reservoir 22 one-to-one, and each cooling tube 23 is established ties and is set up to be connected with outside cooling water source and form cooling water circulation circuit, receive the import and the gaseous phase export of fluid reservoir 22 and all be located and receive fluid reservoir 22 upper portion, receive the liquid phase export of fluid reservoir 22 and be located and receive fluid reservoir module bottom, the cooling tube setting is on corresponding fluid reservoir 22 upper portion of receiving, carries out the condensation to the gaseous phase of following the import entering of receiving fluid reservoir 22.
The vacuum pump module further comprises a second condenser 28, a circulating oil pump 29 and an oil storage tank 30, the oil ring pump 25 is connected with the second condenser 28 through a tenth pipeline 10, the second condenser 28 is connected with the circulating oil pump 29 through an eleventh pipeline 11, the circulating oil pump 29 is connected with the oil storage tank 30 through a twelfth pipeline 12, the oil storage tank 30 is connected with the liquid discharge tank 24 through a thirteenth pipeline 13 and is connected with a first liquid collection tank 32 through a fourteenth pipeline 14, and the exhaust tank 33 is connected with a fourteenth pipeline 14 through a fifteenth pipeline 15. The second pipeline 2, the third pipeline 3, the fourth pipeline 4, the thirteenth pipeline 13 and the seventeenth pipeline 17 are all connected with one-way valves, so that gas phase or liquid phase fluid is prevented from flowing back.
The utility model provides a pair of low temperature vacuum drying machine vacuum system, through setting up the intermediate level condensation unit on receiving the fluid reservoir, when only starting oil ring pump evacuation, gas in the workstation module is after condensation of preceding stage condensation unit once, get into and carry out the secondary condensation by the intermediate level condensation unit in receiving the fluid reservoir module, condensation effect has effectively been improved, after the vacuum degree reaches a certain degree, start the lobe pump and strengthen the evacuation, gas can be after condensation of preceding stage condensation unit once equally, get into and receive and carry out the secondary condensation by the intermediate level condensation unit in the fluid reservoir module, then carry out the cubic condensation through first condenser again, thereby reach condensation effect, intermediate level condensation unit high-usage.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a low temperature vacuum drying machine vacuum system which characterized in that: the device comprises a workbench module, a liquid receiving tank module, a liquid discharging tank, a vacuum pump module, an exhaust module and a heating module;
the workbench module is connected with the heating module to realize heating, an outlet of the workbench module is connected with an inlet of the liquid collecting tank module, a liquid phase outlet of the liquid collecting tank module is connected with the liquid discharging groove, a gas phase outlet of the liquid collecting tank module is connected with an inlet of the vacuum pump module, and an outlet of the vacuum pump module is connected with the exhaust module;
the liquid-phase separation device is characterized in that a preceding stage condensation unit is arranged in an outlet of the workbench module, a middle stage condensation unit is arranged on the liquid collecting tank module, an inlet and a gas phase outlet of the liquid collecting tank module are both positioned on the upper portion of the liquid collecting tank module, a liquid phase outlet of the liquid collecting tank module is positioned at the bottom of the liquid collecting tank module, and the middle stage condensation unit is arranged on the upper portion of the liquid collecting tank module.
2. The low temperature vacuum dryer vacuum system of claim 1, wherein: the workbench module comprises a plurality of overlapped workbenches, a vacuum pipeline is arranged on the outer side of each workbench, and the pre-stage condensation unit is arranged in the vacuum pipeline;
the liquid collecting tank module comprises a plurality of liquid collecting tanks which correspond to the working tables one by one, the vacuum pipeline outlet of each working table is connected with the inlet of the corresponding liquid collecting tank through a first pipeline, the liquid phase outlet of each liquid collecting tank is connected with the liquid discharging groove through a second pipeline, and the gas phase outlet of each liquid collecting tank is connected with a third pipeline;
the vacuum pump module comprises an oil ring pump, a first condenser and a roots pump, third pipelines of all liquid receiving tanks are connected in parallel and then connected with the oil ring pump through fourth pipelines, the first condenser is connected with the fourth pipelines through a fifth pipeline and connected with the liquid receiving tank module in parallel, the first condenser is connected with the roots pump through a sixth pipeline, the roots pump is connected with the oil ring pump through a seventh pipeline, the first condenser is connected with a second liquid collecting tank through a sixteenth pipeline, and the second liquid collecting tank is connected with a liquid discharge tank through a seventeenth pipeline;
the exhaust module comprises a first liquid collecting tank and an exhaust tank, the oil ring pump is connected with the first liquid collecting tank through an eighth pipeline, and the first liquid collecting tank is connected with the exhaust tank through a ninth pipeline.
3. The low temperature vacuum dryer vacuum system of claim 2, wherein: the middle-stage condensing unit comprises a plurality of cooling pipes which correspond to the liquid collecting tanks one to one, and the cooling pipes are connected in series and are connected with an external cooling water source to form a cooling water circulation loop.
4. The low temperature vacuum dryer vacuum system of claim 2, wherein: the vacuum pump module further comprises a second condenser, a circulating oil pump and an oil storage tank, the oil ring pump is connected with the second condenser through a tenth pipeline, the second condenser is connected with the circulating oil pump through an eleventh pipeline, the circulating oil pump is connected with the oil storage tank through a twelfth pipeline, the oil storage tank is connected with a liquid discharge tank through a thirteenth pipeline and is connected with the first liquid collecting tank through a fourteenth pipeline, and the exhaust tank is connected with the fourteenth pipeline through a fifteenth pipeline.
5. The low temperature vacuum dryer vacuum system of claim 4, wherein: and the second pipeline, the third pipeline, the fourth pipeline, the thirteenth pipeline and the seventeenth pipeline are all connected with one-way valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222966780.8U CN218842215U (en) | 2022-11-08 | 2022-11-08 | Vacuum system of low-temperature vacuum dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222966780.8U CN218842215U (en) | 2022-11-08 | 2022-11-08 | Vacuum system of low-temperature vacuum dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218842215U true CN218842215U (en) | 2023-04-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222966780.8U Active CN218842215U (en) | 2022-11-08 | 2022-11-08 | Vacuum system of low-temperature vacuum dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218842215U (en) |
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2022
- 2022-11-08 CN CN202222966780.8U patent/CN218842215U/en active Active
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