Condensation system based on negative-pressure normal-temperature drying and plant aromatic gas collection

Abstract

The condensing system based on negative pressure normal temperature drying and plant aromatic gas collection comprises a refrigerating machine 1, a negative pressure generating device 2 and a drying barrel 3, and is characterized by further comprising a cold water pool 4, a condensing coil set 5, a water inlet pipeline 6 and a water outlet pipeline 7, one end of the condensing coil set 5 is connected with the negative pressure generating device 2, and the other end of the condensing coil set 5 is connected with the drying barrel 3; the condensing coil set 5 is arranged in the cold water pool 4 and soaked in cold water, one ends of the water inlet pipeline 6 and the water outlet pipeline 7 are respectively connected with the refrigerating machine 1, and the other ends are respectively connected with the cold water pool 4. According to the utility model, in negative-pressure normal-temperature drying and plant aromatic gas collection operation, a better condensation effect can be obtained through optimization of the condensation pipeline, the collection efficiency is improved, and water vapor is prevented from entering the tail-end negative-pressure generating device 2 in the whole negative-pressure normal-temperature drying process.

Description

Technical Field

[0001] This utility model relates to the technical field of primary agricultural product processing equipment, and in particular to a condensation system based on negative pressure ambient temperature drying and collection of plant aromatic gases. Background Technology

[0002] Our company has independently developed negative pressure room temperature drying and plant aromatic gas collection equipment and technology. It mainly realizes the simultaneous drying and collection of plant aromatic gases to form hydrosols under negative pressure room temperature environment, and obtains primary processed products such as dried products, plant hydrosols and plant pure oils. The main components include a drying drum, a negative pressure generating device, a condensing device, and a liquid collection device. Related technologies have been patented, such as: a negative pressure low-temperature internal circulation fruit and vegetable drying system (application number 2023104806213) and a staged condensation negative pressure drying and hydrosol collection device (application number 2023228023668). In existing solutions, the liquid collection device and condensing pipeline are placed separately, and the liquid collection device is placed in a normal pressure and room temperature environment. To achieve a more ideal room temperature drying environment, we set the vacuum degree to -98 kPa or below, corresponding to a boiling temperature of 25°C or below. However, this boiling temperature is lower than the room temperature under normal pressure (e.g., 30°C). At this temperature, the hydrosol already collected in the liquid collection device will remain in a boiling state, leading to water ingress into the negative pressure generating device connected to the liquid collection device. In addition, there are also problems with poor condensation effect and slow collection efficiency. Therefore, further optimization is needed to improve efficiency and suitability for large-scale industrial and mining production operations. Summary of the Invention

[0003] The present invention aims to provide a condensation system based on negative pressure ambient temperature drying and collection of plant aromatic gases, which can be applied to negative pressure ambient temperature drying and hydrosol collection operations, greatly improving the efficiency of operation and solving the problem of water vapor being drawn into the terminal negative pressure generating device.

[0004] The present invention adopts the following technical solution:

[0005] A condensation system based on negative pressure ambient temperature drying and collection of plant aromatic gases includes a chiller 1, a negative pressure generating device 2, and a drying drum 3. It is characterized by further including a cold water tank 4, a condenser coil assembly 5, an inlet pipe 6, and an outlet pipe 7. One end of the condenser coil assembly 5 is connected to the negative pressure generating device 2, and the other end is connected to the drying drum 3. The condenser coil assembly 5 is placed in the cold water tank 4 and immersed in cold water. One end of the inlet pipe 6 and the outlet pipe 7 are respectively connected to the chiller 1, and the other end are respectively connected to the cold water tank 4.

[0006] The condenser coil group 5 can be set as one group or several groups, and the groups are connected in series to form a condenser coil group array.

[0007] The condenser coil assembly 5 includes a coil 8 and a manifold 9, and the coil 8 and the manifold 9 are sealed and welded together.

[0008] The coil 8 is a spiral-shaped tube, and the collection tank 9 is an integral tank including a lid.

[0009] The coil 8 includes an upper port 81 and a lower port 82.

[0010] The lid of the liquid collection tank 9 is provided with a first opening 91 and a second opening 92, and the bottom of the liquid collection tank 9 is provided with a third opening 93.

[0011] The third opening 93 of the liquid collection tank 9 is connected to the transfer liquid collection tank 10 outside the cold water pool 4.

[0012] A heating module is loaded on the drying drum 3.

[0013] The negative pressure generating device 2 can be a vacuum pump.

[0014] The bottom and walls of the cold water tank 4 are provided with several openings for pipe connections, and all openings and pipe connections are sealed to achieve the standard of no air leakage and no water leakage.

[0015] Working principle of this utility model:

[0016] This invention uses a heating module loaded on the drying drum to create a heating environment inside the drum. A negative pressure environment is created inside the drum by evacuating air using a negative pressure generating device (such as a vacuum pump). The dried material boils at a low temperature under negative pressure, and the hot steam is drawn into a vacuum pipe by the vacuum pump and enters a condenser coil group placed in a cold water tank. The resulting hydrosol temporarily enters the distribution tank of the condenser coil group. The distribution tank is connected to an external collection tank, and the hydrosol in the distribution tank is output to the transfer collection tank outside the condenser tank through a solenoid valve.

[0017] The condenser coil assembly can be set as one group, or flexibly set as several groups depending on the production specifications. Each group is connected in series and sealed and welded together to form a condenser coil array, which is suitable for drying drums with larger drying capacity and production line layout. By increasing the contact area and distance, and staged condensation and collection, the condensation effect is enhanced. The distribution tank and condenser coil are connected in series and placed in a cold water pool, so that the boiling temperature of the hydrosol in the distribution tank under high vacuum is lower than the temperature at room temperature, such as 30°C. This prevents the hydrosol in the distribution tank from continuing to boil, which would cause water vapor to easily enter the vacuum pump connected to the end of the distribution tank.

[0018] The beneficial effects of this utility model are as follows: (1) The spiral coil and multiple coil scheme increase the contact area and distance, resulting in better condensation effect. (2) When the drying and collection operations reach a high vacuum, the low temperature boiling point corresponding to the collection tank is lower than the room temperature environment (e.g., the room temperature environment is 30℃, while when the vacuum reaches -98kpa, the corresponding boiling temperature is 25℃). In this case, the hydrosol in the collection tank will boil again. If the collection tank and the condensation pipeline are connected and placed in a constant temperature cold water pool, the secondary boiling of the hydrosol and the water vapor being drawn into the terminal vacuum negative pressure generating device can be avoided. (3) The specifications and number of condensation coil groups can be flexibly set according to the needs of the experiment or large-scale industrial and mining production to achieve the best hydrosol collection effect. Attached Figure Description

[0019] Figure 1 : A schematic diagram of the structure of this utility model;

[0020] Figure 2 Schematic diagram of the structure of "5-condenser coil group";

[0021] Figure 3 Example 2: Production line schematic diagram.

[0022] 1-Refrigeration unit; 2-Negative pressure generating device; 3-Drying drum; 4-Cold water pool; 5-Condensing coil assembly; 6-Inlet water pipe; 7-Outlet water pipe; 8-Coil; 81-Upper port; 82-Lower port; 9-Collection tank; 91-First opening; 92-Second opening; 93-Third opening; 10-Transfer collection tank. Detailed Implementation

[0023] Example 1: As Figure 1 As shown, the condenser coil group 5 is set as a group, and a drying tank 3 is configured.

[0024] A condensation system based on negative pressure ambient temperature drying and collection of plant aromatic gases includes a refrigeration unit 1, a negative pressure generating device 2, a drying drum 3, a cold water tank 4, a condensation coil assembly 5, an inlet water pipe 6, an outlet water pipe 7, and the condensation coil assembly 5 is installed in the cold water tank 4.

[0025] The condenser coil assembly 5 includes coils 8 and a manifold tank 9.

[0026] The coil 8 is a spiral-shaped tube, and the collection tank 9 is an integral tank including a lid.

[0027] The coil 8 includes an upper port 81 and a lower port 82.

[0028] The lid of the liquid collection tank 9 is provided with a first opening 91 and a second opening 92, and the bottom of the liquid collection tank 9 is provided with a third opening 93.

[0029] The coil 8 is positioned above the distribution tank 9. The lower port 82 of the coil 8 is sealed and welded to one of the openings (first opening 91 or second opening 92) of the distribution tank 9. The other set of openings (second opening 92 or first opening 91) is connected to the drying tank 3 outside the cold water pool 4. The upper port 81 of the coil 8 is connected to the negative pressure generating device 2 outside the cold water pool 4.

[0030] The bottom of the cold water tank 4 is provided with an opening, and a matching vacuum pipe is connected through this opening to the third opening 93 at the lower end of the distribution tank 9 and the transfer collection tank 10 outside the cold water tank 4. The hydrosol in the distribution tank 9 is transported to the transfer collection tank 10 by the switching of the solenoid valve.

[0031] In addition, necessary holes are made at the bottom and on the wall of the cold water pool 4 for connecting the condenser coil group 5 to the drying tank 3, negative pressure generating device 2 and transfer collection tank 10 outside the cold water pool 4. All holes and connections are sealed to achieve the standard of no air leakage and no water leakage.

[0032] One end of the inlet pipe 6 and the outlet pipe 7 are connected to the chiller 1, and the other end is connected to the cold water pool 4. The chiller 1 is connected to an external water source and delivers cold water to the cold water pool 4, immersing the condenser coil group 5 in the cold water. The inlet and outlet water form a circulation, so that the cold water capacity and temperature in the cold water pool 4 are maintained, and the condensation effect is stable and reliable.

[0033] Example 2: As Figure 3 As shown, the condenser coil group 5 is set up in three groups connected in series, and a drying tank 3 is configured.

[0034] A condensation system based on negative pressure ambient temperature drying and collection of plant aromatic gases includes a refrigeration unit 1, a negative pressure generating device 2, a drying drum 3, a cold water tank 4, a condensation coil assembly 5, an inlet water pipe 6, an outlet water pipe 7, and the condensation coil assembly 5 is installed in the cold water tank 4.

[0035] The condenser coil assembly 5 includes coils 8 and a manifold tank 9.

[0036] The coil 8 is a spiral-shaped tube, and the collection tank 9 is an integral tank including a lid.

[0037] The coil 8 includes an upper port 81 and a lower port 82.

[0038] The lid of the liquid collection tank 9 is provided with a first opening 91 and a second opening 92, and the bottom of the liquid collection tank 9 is provided with a third opening 93.

[0039] The three sets of condenser coils 5 have the same structure. Specifically, the coil 8 is set above the manifold tank 9, and the lower port 82 of the coil 8 is connected in series with the manifold tank 9. It can be connected to the first opening 91 or the second opening 92, and the connection is sealed by welding.

[0040] The three sets of condenser coil groups 5 are connected in series via connecting pipes. Specifically, the upper port 81 of the coil 8 of the first set of condenser coil groups 5 is connected to the upper port 81 of the coil 8 of the second set of condenser coil groups 5; another opening (second opening 91 or first opening 92) of the liquid distribution tank 9 of the second set of condenser coil groups 5 is connected to the upper port 81 of the coil 8 of the third set of condenser coil groups 5.

[0041] Another opening (second opening 91 or first opening 92) of the collector 9 of the first set of condensing coils 5 is connected to the drying tank 3 outside the cold water pool 4; another opening (second opening 91 or first opening 92) of the collector 9 of the third set of condensing coils 5 is connected to the negative pressure generating device 2 outside the cold water pool 4.

[0042] Depending on the scale of the production line and the grouping of the drying drum 3, the condenser coil group 5 can be set up in several groups, and each group is connected to each other in series in a sealed manner. The first group of condenser coil group 5 and the last group of condenser coil group 5 are respectively sealed to the drying drum 3 and the negative pressure generating device 2.

[0043] An opening is provided at the bottom of the cold water tank 4. A matching vacuum pipe is connected through this opening to the third opening 93 at the lower end of the distribution tank 9 and the collection tank outside the cold water tank 4. The hydrosol in the distribution tank 9 is transported to the transfer collection tank 10 by the switching of the solenoid valve.

[0044] One end of the inlet pipe 6 and the outlet pipe 7 are connected to the chiller 1, and the other end is connected to the cold water pool 4. The chiller 1 is connected to an external water source and delivers cold water to the cold water pool 4, immersing the condenser coil group 5 in the cold water. The inlet and outlet water form a circulation, so that the cold water capacity and temperature in the cold water pool 4 are maintained, and the condensation effect is stable and reliable.

[0045] Of course, all internal and external components of the cold water tank 4 must have openings and connectors at the corresponding locations in the cold water tank 4, and all openings and connections must be sealed.

Claims

1. A condensation system based on negative pressure ambient temperature drying and collection of plant aromatic gases, comprising a refrigeration unit (1), a negative pressure generating device (2), and a drying drum (3), characterized in that: It also includes a cold water tank (4), a condenser coil assembly (5), an inlet pipe (6), and an outlet pipe (7). One end of the condenser coil assembly (5) is connected to the negative pressure generating device (2), and the other end is connected to the drying barrel (3). The condenser coil assembly (5) is placed in the cold water tank (4) and immersed in cold water. One end of the inlet pipe (6) and the outlet pipe (7) are respectively connected to the refrigeration unit (1), and the other end is respectively connected to the cold water tank (4).

2. The condensation system based on negative pressure ambient temperature drying and collection of plant aromatic gases according to claim 1, characterized in that: The condenser coil group (5) can be set as one group or several groups, and the groups are connected in series to form a condenser coil group array.

3. The condensation system based on negative pressure ambient temperature drying and collection of plant aromatic gases according to claim 1, characterized in that: The condenser coil assembly (5) includes a coil (8) and a manifold (9), and the coil (8) and the manifold (9) are sealed and welded together.

4. A condensation system based on negative pressure ambient temperature drying and collection of plant aromatic gases according to claim 3, characterized in that: The coil (8) is a spiral-shaped tube, and the collection tank (9) is an integral tank including a lid.

5. A condensation system based on negative pressure ambient temperature drying and collection of plant aromatic gases according to claim 4, characterized in that: The coil (8) includes an upper port (81) and a lower port (82).

6. A condensation system based on negative pressure ambient temperature drying and collection of plant aromatic gases according to claim 4, characterized in that: The lid of the liquid collection tank (9) is provided with a first opening (91) and a second opening (92), and the bottom of the liquid collection tank (9) is provided with a third opening (93).

7. A condensation system based on negative pressure ambient temperature drying and collection of plant aromatic gases according to claim 6, characterized in that: The third opening (93) of the distribution tank (9) is connected to the transfer collection tank (10) outside the cold water pool (4).

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