CN210399876U

CN210399876U - Material drying system

Info

Publication number: CN210399876U
Application number: CN201920799442.5U
Authority: CN
Inventors: 张振涛; 越云凯; 杨俊玲; 李小龙; 张钰; 张化福; 张骥; 刘尚卿; 张鹏
Original assignee: Technical Institute of Physics and Chemistry of CAS
Current assignee: Technical Institute of Physics and Chemistry of CAS
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-04-24
Anticipated expiration: 2029-05-29

Abstract

The utility model discloses a material drying system. The material drying system comprises a shell, a feeding part, a first condenser, a first evaporator and a second evaporator; the feeding part is connected with a feeding hole of the shell; the first condenser and the first evaporator are positioned in the shell, and the first condenser is positioned at the upstream of the first evaporator along the advancing direction of the materials; the second evaporator is communicated with the interior of the shell through a pipeline and is used for dehumidifying the interior of the shell. The utility model provides a material drying system is through being connected first condenser and first evaporimeter, can utilize the heat of first condenser release to carry out the drying to the material, utilizes the cold volume of first evaporimeter release to cool off the material simultaneously. And furthermore, the low-grade air in the environment can be fully utilized to heat and cool materials, the traditional steam heating method and the traditional cooling method of a refrigerating system are replaced, and the energy-saving effect is obvious.

Description

Material drying system

Technical Field

The utility model relates to a material drying technology field especially relates to a material drying system.

Background

Drying is an energy-intensive operation process, and with the gradual deepening of the policy of energy conservation and emission reduction, for the drying industry, the energy conservation in the drying process becomes the key point of attention of the drying industry. The traditional Chinese medicine extract drying is an important production unit for producing traditional Chinese medicine preparations by taking traditional Chinese medicine extracts as main processing raw materials, and the reasonability and the advancement of a traditional Chinese medicine extract drying process and equipment are directly related to the yield and the quality of medicines and also related to the energy consumption and the cost of products.

At present, most of traditional Chinese medicine preparations are solid preparations, and the general production process comprises the steps of crushing the Chinese herbal medicines, extracting the crushed Chinese herbal medicines by using water, alcohol or other solvents to obtain an extracting solution, and evaporating and concentrating the extracting solution to obtain an extract. These extracts are rarely used clinically, and most are processed into solid preparations by drying.

Because the traditional Chinese medicine extract has large viscosity and poor air permeability, the temperature of the extract in the drying process generally reaches more than 80 ℃ and the drying time is long in order to obtain better drying effect, and the existing drying technology has the defects of low yield, high energy consumption, low production efficiency, unstable product quality and the like.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims at providing a material drying system to solve among the prior art to the big problem of traditional chinese medicine extract drying energy consumption.

(II) technical scheme

In order to solve the technical problem, the utility model provides a material drying system. The material drying system comprises a shell, a feeding part, a first condenser, a first evaporator and a second evaporator; the feeding part is connected with the feeding hole of the shell; the first condenser and the first evaporator are positioned in the shell, and the first condenser is positioned at the upstream of the first evaporator along the traveling direction of the materials; the second evaporator is communicated with the interior of the shell through a pipeline and used for dehumidifying the interior of the shell.

Further, the material drying system further comprises a second condenser arranged inside the shell, an inlet of the second condenser is communicated with an outlet of the second evaporator through a second compression piece, and an outlet of the second condenser is communicated with an inlet of the second evaporator through a second throttling piece.

Further, a vacuum generating part is connected to the housing.

Further, the vacuum generating part comprises a vacuum generating piece and a circulating water tank, and the circulating water tank is communicated with the vacuum generating piece.

Further, the second evaporator is connected to the case at a position corresponding to the first condenser or the second condenser.

Furthermore, the water receiving container of the second evaporator is also connected with a drain valve.

Further, the feed portion includes the charge-in pump, material drying system still set up in conveyer belt in the casing, the charge-in pump is connected with the feed bin and is used for with material in the feed bin is carried to on the conveyer belt, follows the advancing direction of material, the second condenser, first condenser and first evaporimeter sets gradually the below of conveyer belt.

Further, a distributing device is further arranged between the feeding pump and the conveying belt and is located above the feeding section of the conveying belt.

Further, a discharging device is arranged in the shell and arranged on the discharging section of the conveying belt.

Furthermore, a material receiving tank is arranged on the shell at a position opposite to the position of the material feeder.

(III) advantageous effects

The utility model provides a material drying system is through passing through first compression piece and first throttle intercommunication with first condenser and first evaporimeter, can utilize the heat of first condenser release to carry out the drying to the material, utilizes the cold volume of first evaporimeter release to cool off the material simultaneously. And the low-grade air energy in the environment is fully utilized to heat and cool the materials, the traditional steam heating method and the traditional cooling method of the refrigerating system are replaced, and the energy-saving effect is obvious. The system utilizes the first condenser to generate different heating temperatures in multiple sections, can control the foaming degree of the traditional Chinese medicine extract, and avoids the phenomenon of overheating of the traditional Chinese medicine extract in the speed-reducing drying stage. In addition, the first evaporator is arranged to dehumidify the inside of the system, and the quality of dried products is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structure diagram of a material drying system provided by an embodiment of the present invention.

The reference numbers illustrate:

1. a housing; 2. a first condenser; 3. a first evaporator; 4. a second evaporator; 5. a first compression member; 6. a first orifice member; 7. a second condenser; 8. a second compression member; 9. a second orifice member; 10. a vacuum generating member; 11. a circulating water tank; 12. a drain valve; 13. a feed pump; 14. a conveyor belt; 15. a storage bin; 16. a distributing device; 17. a blanking device; 18. a material receiving tank; 19. scraping the material device; 20. a stepping motor; 21. a first regulating valve; 22. a second on-off valve; 23. a third on-off valve; 24. and a fourth switch valve.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the utility model provides a material drying system. The material drying system comprises a shell 1, a feeding part, a first condenser 2, a first evaporator 3 and a second evaporator 4; the feeding part is connected with a feeding hole of the shell 1; the first condenser 2 and the first evaporator 3 are positioned in the shell 1, the first condenser 2 is positioned at the upstream of the first evaporator 3 along the advancing direction of materials, a first compression piece 5 is connected between the inlet of the first condenser 2 and the outlet of the first evaporator 3, and a first throttling piece 6 is connected between the outlet of the first condenser 2 and the inlet of the first evaporator 3; the second evaporator 4 communicates with the inside of the casing 1 through a pipe to dehumidify the inside of the casing 1.

The utility model provides a material drying system is through communicating first condenser 2 and first evaporimeter 3 through first compression piece 5 and first throttle 6, and then first condenser 2, first evaporimeter 3, first compression piece 5 and first throttle 6 intercommunication form a refrigerating system, and the heat that utilizes 2 releases of first condenser is dried the material, utilizes the cold volume of 3 releases of first evaporimeter to cool off the material simultaneously. And the low-grade air energy in the environment is fully utilized to heat and cool the materials, the traditional steam heating method and the traditional cooling method of the refrigerating system are replaced, and the energy-saving effect is obvious.

In addition, the second evaporator 7 is arranged to cool and dehumidify the inside of the system.

Specifically, the following description will be given by taking the material to be dried as the traditional Chinese medicine extract as an example.

The embodiment of the utility model provides a material drying system is mainly including casing 1, and casing 1 is used for bearing the utility model provides an in embodiment first condenser 2 and first evaporimeter 3. A feed inlet is formed in the shell 1, wherein the feed part is connected with the feed inlet of the shell 1 and used for conveying the traditional Chinese medicine extract into the shell 1 for drying and cooling; a first compression element 5 is connected between the outlet of the first condenser 2 and the inlet of the first evaporator 3, and a first throttle element 6 is connected between the inlet of the first condenser 2 and the outlet of the first evaporator 3.

The first condenser 2 and the first evaporator 3 may use a fin-and-tube heat exchanger, the first compression member 5 may be a piston compressor, and the first throttle 6 may be a throttle valve or a capillary tube, etc.

Thus, the working medium absorbs the low-grade air energy of the external environment in the first evaporator 3, the temperature and enthalpy of the working medium are improved through the first compression part 5, latent heat is released in the first condenser 2, a heat source is provided for drying the traditional Chinese medicine extract, the working medium after releasing the latent heat is cooled and decompressed through the first throttling part 6, and then enters the first evaporator 3 again to absorb the low-grade air energy of the environment, and therefore a cycle is completed.

In other words, the first condenser 2 is capable of transforming the vapour into a liquid, transferring the heat in the first condenser 2 to the air in the vicinity of the first condenser 2 in a fast manner; first evaporimeter 3 can carry out the heat exchange with microthermal condensate liquid and external air, and the working medium gasification absorbs heat, reaches refrigerated effect. This is equivalent to drying the traditional Chinese medicine extract by using the heat released by the first condenser 2, and cooling the traditional Chinese medicine extract by using the cold released by the first evaporator 3. Thus, the first condenser 2 is disposed upstream of the first evaporator 3 in the traveling direction of the herbal extract.

The second evaporator 4 is connected to the housing 1 for dehumidifying the inside of the housing 1, and the second evaporator 4 provided here may also use a fin-tube heat exchanger or other components capable of realizing a dehumidifying function. Wherein the second evaporator 4 can be communicated with the shell through a pipeline. The second evaporator 4 can be used for timely dehumidifying the shell 1, so that adverse influence of water vapor in the shell 1 on the drying effect of the traditional Chinese medicine extract is avoided.

Still further, the housing 1 is also connected with a vacuum generating part; the vacuum generating part comprises a vacuum generating part 10 and a circulating water tank 11, and the circulating water tank 11 is communicated with the vacuum generating part 10.

Through communicating a vacuum generating part on casing 1, can improve the inside vacuum of casing 1, and then can reduce the required drying temperature of dry traditional chinese medicine extract to a certain extent, can further reduce the energy consumption like this. The vacuum generating part may use a vacuum pump, and accordingly, a circulation water tank 11 may be connected to the vacuum pump in order to lower the operating temperature of the vacuum pump. A second on-off valve 22 is connected to the circulation line of the circulation water tank 11, and parameters such as the flow rate of the circulation water in the circulation water tank 11 can be controlled by controlling the second on-off valve 22.

A first control valve 21 is further provided on a pipe between the vacuum generating part and the second evaporator 4, and whether or not a vacuum atmosphere needs to be formed inside the casing 1 can be controlled by controlling the first control valve 21 and the second on-off valve 22.

Still further, the material drying system further comprises a second condenser 7 arranged in the housing 1. The drying effect of the material drying system on the traditional Chinese medicine extract can be further improved by arranging the second condenser 7. Specifically, as shown in fig. 1, the second condenser 7 is disposed at an upstream position of the first condenser 2 in the traveling direction of the herbal extract. The inlet of the second condenser 7 communicates with the outlet of the second evaporator 4 through a second compression element 8, and the outlet of the second condenser 7 communicates with the inlet of the second evaporator 4 through a second throttle element 9.

The system can generate different heating temperatures in multiple sections by utilizing the first condenser 2 and the second condenser 7, can control the foaming degree of the traditional Chinese medicine extract, and avoids the phenomenon of overheating of the traditional Chinese medicine extract in the speed reduction drying stage.

Specifically, be provided with cold working medium in second evaporimeter 4, when first condenser 2 and second condenser 7 dry out the moisture in the traditional chinese medicine extract, vapor can be inhaled in the pipeline that second evaporimeter 4 and casing 1 are connected, when the cold working medium in second evaporimeter 4 meets high temperature vapor, can absorb heat the vaporization and become liquid, and then reduce the temperature of the high temperature vapor around second evaporimeter 4, make its condensation become liquid, the liquid after the condensation will remain in the stock solution device in second evaporimeter 4, and then realized the dehumidification to casing 1 inside.

Wherein, the second condenser 7 can use a finned tube heat exchanger, the second compression part 8 can be a piston compressor, and the second throttling part 9 can be a throttling valve or a capillary tube, etc. The length of the dry section of the traditional Chinese medicine extract can be prolonged by arranging the second condenser 7. In addition, because second condenser 7 and first condenser 2 are two parts of mutually independent, consequently, can set up the drying temperature of first condenser 2 and second condenser 7 respectively for this material drying system possesses preheating, the function of heating, has expanded this material drying system's use scene greatly. Of course, in alternative embodiments, it is also possible to provide the first condenser 2 with a relatively long length and to provide a different number of fins at different positions on the first condenser 2 in order to achieve the above-mentioned object.

Further, in order to enable the rapid discharge of the moisture of the casing 1, the second evaporator 4 as described above is connected to the casing 1 at a position corresponding to the first condenser 2 or the second condenser 7. Therefore, after the traditional Chinese medicine extract is dried, the generated water vapor can be directly adsorbed to the surface of the second evaporator 4, and the purpose of quickly discharging the water vapor is further achieved.

In addition, a drain valve 12 is connected to a water receiving container, such as a water receiving tray, of the second evaporator 4 in order to drain the water on the surface of the second evaporator 4 in time.

It is worth mentioning that although two refrigeration systems are shown in fig. 1, and the first evaporator 3 and the first condenser 2 belong to one of the refrigeration systems, and the second evaporator 4 and the second condenser 7 belong to the other refrigeration system, they do not constitute a limitation to the present application. For example, the first evaporator 3, the first condenser 2, the second evaporator 4 and the second condenser 7 may also belong to different refrigeration systems, respectively; or, the first evaporator 3, the first condenser 2, the second evaporator 4 and the second condenser 7 may all belong to the same refrigeration system; even the first evaporator 3, the first condenser 2 and the second evaporator 4 may belong to one and the same refrigeration system, while the second condenser 7 alone belongs to another refrigeration system, and so on.

The feeding portion in this embodiment includes a feeding pump 13, and the material drying system further includes a conveyor belt 14 disposed in the housing 1, and the feeding pump 13 is connected with the bin 15 and is used for conveying the material in the bin 15 to the conveyor belt 14, and along the traveling direction of the material, the second condenser 7, the first condenser 2 and the first evaporator 3 are sequentially disposed below the conveyor belt 14.

Referring to fig. 1, a storage bin 15 is used for containing the undried Chinese medicine extract, a third on-off valve 23 is arranged between the storage bin 15 and the feeding pump 13, when the third on-off valve 23 is opened, the undried Chinese medicine extract flows into the feeding pump 13, and the material can be conveyed into the shell 1 to be dried through the conveying of the feeding pump 13 and the lifting of the stepping motor 20. As described above, due to the different functions of the first condenser 2, the second condenser 7 and the first evaporator 3, the second condenser 7, the first condenser 2 and the first evaporator 3 are sequentially arranged below the conveyor belt 14 along the traveling direction of the herbal extract.

The lower part of the conveyor belt 14 specifically refers to the lower part of the belt on the side of the conveyor belt 14 for carrying the Chinese medicinal extract (i.e. between two rotating wheels on the conveyor belt 14).

In a preferred embodiment, the material drying system further comprises a distributor 16, the distributor 16 being arranged above the infeed section of the conveyor belt 14. After being lifted into the shell 1 by the stepping motor 20, the traditional Chinese medicine extract is evenly and flatly paved on the conveyor belt 14 through the distributor 16, and the conveyor belt 14 operates at a speed set by the process to convey the traditional Chinese medicine extract to a drying and cooling position.

Further, a blanking device 17 is arranged in the shell 1, and the blanking device 17 is arranged on the blanking section of the conveyor belt 14; a material receiving tank 18 is also arranged on the shell 1 at a position opposite to the position of the blanking device 17.

Referring to fig. 1, in order to ensure that the dried Chinese medicinal extract can fall down in time, a feeder 17 is further disposed in the housing 1, and the feeder 17 is disposed at a feeding position of the conveyor belt 14. The feeder 17 is a pneumatic cutter which is arranged near the rotary wheel, and the dried traditional Chinese medicine extract can be cut off by the pneumatic cutter.

Still further, a scraper 19 is disposed at the rotation position of the conveyor belt 14 for scraping the herbal extract on the conveyor belt 14.

Referring to fig. 1, a material receiving tank 18 is further provided on the housing 1 at a position opposite to the position of the downer 17. The dried and cooled traditional Chinese medicine extract falls into a material receiving tank 18 to be crushed under the combined action of a material discharging device 17 and a material scraping device 19, and the crushed traditional Chinese medicine extract is discharged through an air lock type discharging device. Wherein, the receiving tank 18 can be arranged on the shell 1 at the position corresponding to the pneumatic chopper.

And when the material drying system stops running, the fourth switch valve 24 is opened, and the storage bin 15 is emptied. Wherein the fourth on-off valve 24 is connected between the third on-off valve 23 and the feed pump 13.

The following explains the method of using the material drying system:

firstly, preheating traditional Chinese medicine extract in a storage bin 15 to a process set temperature, then opening a third switch valve 23 connected below the storage bin 15 to enable the traditional Chinese medicine extract to fall into a feeding pump 13, feeding the traditional Chinese medicine extract by the feeding pump 13 at a feeding rate set by a preset process, uniformly and flatly paving the traditional Chinese medicine extract on a conveyor belt 14 through a distributor 16, and operating the conveyor belt 14 at a rate set by the process;

secondly, starting a vacuum pump and a first regulating valve 21 connected with the vacuum pump, and maintaining a certain vacuum degree of the system by controlling the opening degree of the first regulating valve 21, wherein correspondingly, the second evaporator 4 is also required to be started in the step;

again, the second compression element 8, the second condenser 7 and the second throttle element 9 are opened, while maintaining the open state of the second evaporator 4;

thirdly, starting the first condenser 2, the first evaporator 3, the first compression part 5 and the first throttling part 6 and keeping the conveyor belt 14 to continuously run, so that the traditional Chinese medicine extract sequentially passes through the second condenser 7, the first condenser 2 and the first evaporator 3 to be respectively preheated, heated and cooled;

and thirdly, the dried traditional Chinese medicine extract is peeled off by a scraper 19, falls into a material receiving tank 18 for crushing after being cut off by pneumatic cutting, and the crushed traditional Chinese medicine extract is discharged by an air brake type discharger.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A material drying system comprises a shell (1), and is characterized by further comprising a feeding part, a first condenser (2), a first evaporator (3) and a second evaporator (4);

the feeding part is connected with a feeding hole of the shell (1);

the first condenser (2) and the first evaporator (3) are located inside the housing (1), the first condenser (2) being located upstream of the first evaporator (3) in the direction of travel of the material;

the second evaporator (4) is communicated with the interior of the shell (1) through a pipeline to dehumidify the interior of the shell (1).

2. The material drying system according to claim 1, characterized in that it further comprises a second condenser (7) arranged inside the housing (1), the inlet of the second condenser (7) communicating with the outlet of the second evaporator (4) through a second compression element (8), the outlet of the second condenser (7) communicating with the inlet of the second evaporator (4) through a second throttle element (9).

3. The material drying system according to claim 1, characterized in that a vacuum generating part is further connected to the housing (1).

4. The material drying system according to claim 3, characterized in that the vacuum generating part comprises a vacuum generating member (10) and a circulating water tank (11), the circulating water tank (11) being in communication with the vacuum generating member (10).

5. The material drying system according to claim 2, characterized in that the second evaporator (4) is connected on the housing (1) at a position corresponding to the first condenser (2) or the second condenser (7).

6. The material drying system according to claim 1, characterized in that a drain valve (12) is further connected to the water receiving container of the second evaporator (4).

7. Material drying system according to claim 2, characterised in that the feed section comprises a feed pump (13),

the material drying system also comprises a conveyor belt (14) arranged in the shell (1),

the feeding pump (13) is connected with a bin (15) and used for conveying the materials in the bin (15) to the conveyor belt (14),

along the advancing direction of material, second condenser (7), first condenser (2) and first evaporimeter (3) set gradually in the below of conveyer belt (14).

8. The material drying system according to claim 7, characterized in that a distributor (16) is further arranged between the feed pump (13) and the conveyor belt (14), the distributor (16) being located above the feeding section of the conveyor belt (14).

9. Material drying system according to claim 7, characterized in that a downer (17) is further arranged in the housing (1), which downer (17) is arranged on a downer section of the conveyor belt (14).

10. Material drying system according to claim 9, characterised in that a material receiving tank (18) is also arranged on the housing (1) at a position opposite to the position of the downer (17).