Cooling device for supercritical extraction process

Abstract

The utility model discloses a cooling device for a supercritical extraction process. The cooling device comprises a cooling pond, the feeding pipes are uniformly distributed in the cooling tank in an upper and lower double-layer manner for multi-section cooling; the air cooling device is arranged above the cooling pool and is used for carrying out primary cooling on the upper layer of the feeding pipe; the water cooling device is arranged on the side face of the cooling pond and used for conducting secondary cooling on the lower layer of the feeding pipe and achieving refrigeration circulation; a feeding pipe opening of the feeding pipe is formed in the upper layer, and a discharging pipe opening of the feeding pipe is formed in the lower layer. According to the cooling device, multi-section type cooling can be conveniently conducted on materials conveyed in the feeding pipe, the materials and the feeding pipe are pre-cooled through the air cooling device, rapid refrigeration is conducted through the water cooling device, the materials are cooled through the combination of air cooling and water cooling, the cooling quality and efficiency can be effectively guaranteed, and the cooling efficiency is improved. And meanwhile, the materials and a material pipe for conveying the materials can be prevented from being damaged due to instantaneous decrease of the temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of supercritical extraction, in particular to a cooling device for supercritical extraction technology. Background Art

[0002] Supercritical extraction is a separation and purification technology that uses supercritical fluid as the extraction solvent. It utilizes the property that the solubility of supercritical fluid depends on the extraction pressure and temperature. Supercritical extraction includes two processes, extraction and separation. It can prevent the oxidation and escape of heat-sensitive substances, and has the advantages of simple process, clean and environmental protection, and fast extraction speed. It is widely used in medicine, food, fragrance and chemical industries.

[0003] During the supercritical extraction process, a cooling device is required to cool the extract and stratify it so that it can be separated quickly. However, the current cooling devices used in supercritical extraction processing have a single function and a slow cooling speed, and cannot cool quickly.

[0004] Through searching, it was found that the Chinese utility model patent with patent publication number "CN215387668U" discloses a cooling device for supercritical extraction processing, including four support seats, a first storage mechanism is fixedly connected to the upper end of the four support seats, a second storage mechanism is fixedly connected inside the first storage mechanism, an in-and-out mechanism is fixedly connected outside the first storage mechanism, and a cooling mechanism is fixedly connected inside the top of the first storage mechanism. The beneficial effects of the utility model are: it is convenient to add coolant into the cooling box through the feed trough and the feed pipe to perform preliminary cooling on the liquid in the extraction box, and the two rotating rods are conveniently driven to rotate through the driving motor and the rotating plate, and the circular groove is conveniently and stably driven to drive several soft brushes of the two rotating rods to rotate quickly. The rotating rod can drive the coolant to rotate to increase the cooling effect of the coolant. Through several soft brushes, it is convenient to clean the cooling box and the extraction box while increasing the flow of coolant. The cooling speed is fast and it is convenient to clean the inside.

[0005] Through the analysis of the above technical solution, the cooling method of this technical solution is to put the extraction liquid into the second storage mechanism, and the first storage mechanism and the stirring device are arranged at the outer end of the second storage mechanism. After the cooling liquid is added to the first storage mechanism, the extraction liquid in the second storage mechanism is cooled by heat transfer.

[0006] However, this refrigeration method has at least the following problems:

[0007] 1. When the refrigerant contacts the inner wall of the second storage mechanism, since the second storage mechanism contains the extraction liquid with a relatively high temperature, the second storage mechanism and the extraction liquid near the inner wall of the second storage mechanism may be cooled rapidly and instantaneously, resulting in a large temperature change of the extraction liquid and the second storage mechanism, which may affect the service life of the second storage mechanism and may also have a certain impact on the extraction liquid.

[0008] 2. Since the refrigerant can only quickly cool the inner wall of the second storage mechanism, the extraction liquid at the center of the second storage mechanism is cooled more slowly, resulting in uneven cooling. Utility Model Content

[0009] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a cooling device for a supercritical extraction process. The cooling device combines an air cooling device and a water cooling device to cool the extract transported in the feeding pipe. The air cooling device pre-cools the extract and the feeding pipe, which can effectively avoid certain influences caused by large temperature differences between the extract and the feeding pipe. The water cooling device is combined to quickly cool the extract, which can improve the refrigeration efficiency and also ensure more uniform cooling.

[0010] The utility model is implemented by constructing a cooling device for supercritical extraction process, including a cooling pool;

[0011] The feeding pipe is evenly distributed in the cooling pool in the form of upper and lower double layers for multi-stage cooling;

[0012] The air cooling device is arranged above the cooling pool to perform primary cooling on the upper layer of the feeding pipe;

[0013] A water cooling device is arranged on the side of the cooling pool to perform secondary cooling on the lower layer of the feeding pipe and realize a refrigeration cycle;

[0014] The feeding pipe opening of the feeding pipe is arranged on the upper layer, and the discharging pipe opening is arranged on the lower layer.

[0015] As described in the previous paragraph, the feed pipe opening of the feeding pipe is set on the upper layer, and the discharge pipe opening is set on the lower layer. Combined with the installation positions of the air cooling device and the water cooling device, the feeding pipe and the material transported in the feeding pipe can be cooled in a step-by-step manner, thereby effectively avoiding the influence of the feeding pipe and the material due to the large temperature difference, while also ensuring the cooling efficiency and making the cooling more uniform.

[0016] Specifically, the cooling pool includes a cooling frame and a top cover, and a closed cavity is formed by the cooling frame and the top cover. The feeding pipe is inserted into the cooling frame from the upper side of the cooling frame and discharged from the lower side of the cooling frame.

[0017] As described in the above paragraph, setting the cooling pool as a cooling frame and a top cover is to facilitate installation of an air cooling device above the feeding pipe, so as to pre-cool the feeding pipe and its materials.

[0018] Specifically, the feeding pipe is a coil structure, and its upper and lower layers are kept in communication.

[0019] As described in the previous paragraph, setting the feeding pipe as a coil ensures that the material being transported has sufficient time to cool, thereby ensuring the cooling quality. At the same time, the upper and lower layers of the feeding pipe remain connected to ensure that the material being transported is first air-cooled and then water-cooled, forming a stepped multi-stage cooling.

[0020] Specifically, the air cooling device is a plurality of fans arranged on the top cover, the air outlets of the fans correspond to the feed pipes inside the cooling pool, and exhaust holes are also provided on the top cover.

[0021] As described in the previous paragraph, the exhaust holes are provided to facilitate the exhaust of the air blown out by the air cooling device.

[0022] Specifically, baffles are provided on both ends of the inner side of the top cover.

[0023] As described in the above paragraph, the baffle is provided to reduce the impact of the ripples on the inner wall of the cooling pool caused by the start-up of the air cooling device to blow out ripples on the cooling water.

[0024] Specifically, the water cooling device includes a water inlet pipe, a water outlet pipe and a refrigeration system. The pipe openings of the water inlet pipe and the water outlet pipe are both arranged on the side of the cooling frame and the height of the water outlet pipe is kept higher than the water inlet pipe. The refrigeration system is arranged outside the cooling pool and is respectively connected to the water inlet pipe and the water outlet pipe, thereby ensuring that the water inlet pipe, the water outlet pipe and the cooling pool are interconnected.

[0025] As described in the above paragraph, the specific form of setting up the water cooling device is to facilitate the refrigeration circulation of cooling water, thereby ensuring that the cooling water flowing into the cooling pool is always in a low temperature state, so as to continuously cool the material transported in the feeding pipe.

[0026] Specifically, cooling water is stored inside the cooling frame of the cooling pool, and the liquid level of the cooling water is higher than the outlet pipe opening and lower than the upper layer of the feeding pipe.

[0027] As described in the previous paragraph, the liquid level of the cooling water is set to prevent the cooling water from directly contacting the upper feeding pipe, which would make it impossible to achieve stepped cooling.

[0028] The utility model has the following beneficial effects:

[0029] The cooling device combines an air cooling device and a water cooling device to cool the extract in the feeding pipe. The air cooling device precools the extract and the feeding pipe, which can effectively avoid certain effects caused by large temperature differences between the extract and the feeding pipe. The water cooling device is combined to quickly cool the extract, which can improve the cooling efficiency and ensure more uniform cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the specific implementation of the present invention, they are used to explain the present invention, but do not constitute any limitation to the present invention. In the accompanying drawings:

[0031] Figure 1 It is a structural schematic diagram of the utility model;

[0032] Figure 2 yes Figure 1 Schematic diagram of the main viewing direction;

[0033] Figure 3 yes Figure 1 Schematic diagram of the top view direction;

[0034] Figure 4 yes Figure 3 Sectional view of AA in the middle;

[0035] Figure 5 It is a schematic diagram of the structure of the utility model without the cover plate and the air cooling device;

[0036] In the figure: 1. Cooling frame; 2. Top cover; 3. Feed pipe; 4. Water inlet pipe; 5. Water outlet pipe; 6. Refrigeration system; 7. Air cooling device; 8. Exhaust hole; 9. Baffle. DETAILED DESCRIPTION

[0037] The technical solution of the present invention is further specifically described below through specific embodiments in combination with the accompanying drawings; it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not intended to limit the present invention in any way; the accompanying drawings in the present invention are only used to assist in the description of the embodiments and to facilitate understanding, and are not intended to limit the present invention in any way.

[0038] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0039] As described in the background technology, the existing supercritical extraction cooling device cannot ensure the uniformity of cooling when cooling the extract, and may cause part of the extract and the container containing the extract to be affected by large temperature changes, or damage the container of the extract, thereby affecting its service life.

[0040] For the reasons stated above, please refer to the attached Figure 1 , the utility model provides a cooling device for a supercritical extraction process, comprising a cooling pool;

[0041] Feeding pipe 3, evenly distributed in the cooling pool in the form of upper and lower double layers for multi-stage cooling;

[0042] The air cooling device 7 is arranged above the cooling pool to perform primary cooling on the upper layer of the feeding pipe 3;

[0043] A water cooling device is arranged on the side of the cooling pool to perform secondary cooling on the lower layer of the feeding pipe 3 and realize a refrigeration cycle;

[0044] The feed pipe opening of the feeding pipe 3 is arranged at the upper layer, and the discharge pipe opening is arranged at the lower layer.

[0045] As described in the previous paragraph, the feed pipe opening of the feeding pipe is set on the upper layer, and the discharge pipe opening is set on the lower layer. Combined with the installation positions of the air cooling device and the water cooling device, the feeding pipe and the material transported in the feeding pipe can be cooled in a step-by-step manner, thereby effectively avoiding the influence of the feeding pipe and the material due to the large temperature difference, while also ensuring the cooling efficiency and making the cooling more uniform.

[0046] Specifically, the cooling pool includes a cooling frame 1 and a top cover 2, and a closed cavity is formed by the cooling frame 1 and the top cover 2. The feeding pipe 3 is inserted into the cooling frame 1 from the upper side of the cooling frame 1 and discharged from the lower side of the cooling frame 1.

[0047] As described in the above paragraph, setting the cooling pool as a cooling frame and a top cover is to facilitate installation of an air cooling device above the feeding pipe, so as to pre-cool the feeding pipe and its materials.

[0048] Please see attached Figure 5 Specifically, the feeding pipe 3 is a coil structure, and its upper and lower layers are kept connected.

[0049] As described in the previous paragraph, setting the feeding pipe as a coil ensures that the material being transported has sufficient time to cool, thereby ensuring the cooling quality. At the same time, the upper and lower layers of the feeding pipe remain connected to ensure that the material being transported is first air-cooled and then water-cooled, forming a stepped multi-stage cooling.

[0050] Please see attached Figure 1It can be seen that, specifically, the air cooling device 7 is a plurality of fans arranged on the top cover 2 , the air outlets of the fans correspond to the feed pipes 3 inside the cooling pool, and exhaust holes 8 are also opened on the top cover 2 .

[0051] As described in the previous paragraph, the exhaust holes are provided to facilitate the exhaust of the air blown out by the air cooling device.

[0052] Please see attached Figure 4 It can be seen that, specifically, baffles 9 are further provided on both ends of the inner side of the top cover 2 .

[0053] As described in the above paragraph, the baffle is provided to reduce the impact of the ripples on the inner wall of the cooling pool caused by the start-up of the air cooling device to blow out ripples on the cooling water.

[0054] Specifically, the water cooling device includes a water inlet pipe 4, a water outlet pipe 5 and a refrigeration system 6. The pipe openings of the water inlet pipe 4 and the water outlet pipe 5 are both arranged on the side of the cooling frame 1 and the height of the water outlet pipe 5 is kept higher than the water inlet pipe 4. The refrigeration system 6 is arranged outside the cooling pool and is respectively connected to the water inlet pipe 4 and the water outlet pipe 5, thereby ensuring that the water inlet pipe 4, the water outlet pipe 5 and the cooling pool are interconnected.

[0055] As described in the above paragraph, the specific form of setting up the water cooling device is to facilitate the refrigeration circulation of cooling water, thereby ensuring that the cooling water flowing into the cooling pool is always in a low temperature state, so as to continuously cool the material transported in the feeding pipe.

[0056] Furthermore, the refrigeration system 6 is composed of a compressor, an evaporator, a condenser, and an expansion valve. This is a prior art, and its purpose is to circulate and cool the cooling water in the cooling pool, which will not be described in detail here.

[0057] Specifically, cooling water is stored inside the cooling frame 1 of the cooling pool, and the liquid level of the cooling water is higher than the outlet of the water outlet pipe 5 and lower than the upper layer of the feeding pipe 3 .

[0058] As described in the previous paragraph, the liquid level of the cooling water is set to prevent the cooling water from directly contacting the upper feeding pipe, which would make it impossible to achieve stepped cooling.

[0059] When the cooling device is in use, the refrigeration system 6 is first started to drive the cooling water in the cooling frame 1 to flow and cool, and the air cooling device 7 is started at the same time (that is, the fan is powered on), and then the external extraction liquid is transported to the feeding pipe 3 by starting the external pump body. The extraction liquid in the feeding pipe 3 enters the cooling frame 1 through the feeding pipe opening, is first pre-cooled by the air blown out by the air cooling device 7, and then flows into the feeding pipe 3 of the lower layer to contact with the cooling water for further cooling, thereby realizing step-type cooling, and finally is discharged from the discharge pipe opening of the feeding pipe 3 to complete the cooling.

[0060] The above description is a detailed description of the preferred feasible embodiment of the utility model, but the embodiment is not used to limit the scope of the patent application of the utility model. All equivalent changes or modified changes completed under the technical spirit suggested by the utility model should fall within the patent scope covered by the utility model.

Claims

1. A cooling device for supercritical extraction process, characterized in that: include cooling pool; The feeding pipe is evenly distributed in the cooling pool in the form of upper and lower double layers for multi-stage cooling; The air cooling device is arranged above the cooling pool to perform primary cooling on the upper layer of the feeding pipe; A water cooling device is arranged on the side of the cooling pool to perform secondary cooling on the lower layer of the feeding pipe and realize a refrigeration cycle; The feeding pipe opening of the feeding pipe is arranged on the upper layer, and the discharging pipe opening is arranged on the lower layer.

2. The cooling device for supercritical extraction process according to claim 1, characterized in that: The cooling pool comprises a cooling frame and a top cover, and a closed cavity is formed by the cooling frame and the top cover. The feeding pipe is inserted into the cooling frame from the upper side of the cooling frame and discharged from the lower side of the cooling frame.

3. The cooling device for supercritical extraction process according to claim 2, characterized in that: The feeding pipe is a coil structure, and the upper and lower layers thereof are kept in communication.

4. The cooling device for supercritical extraction process according to claim 2, characterized in that: The air cooling device is a plurality of fans arranged on the top cover, the air outlets of the fans correspond to the feed pipes inside the cooling pool, and exhaust holes are also opened on the top cover.

5. The cooling device for supercritical extraction process according to any one of claims 2 or 4, characterized in that: Baffles are also arranged on both ends of the inner side of the top cover.

6. The cooling device for supercritical extraction process according to claim 2, characterized in that: The water cooling device includes a water inlet pipe, a water outlet pipe and a refrigeration system. The pipe openings of the water inlet pipe and the water outlet pipe are both arranged on the side of the cooling frame and the height of the water outlet pipe is kept higher than the water inlet pipe. The refrigeration system is arranged outside the cooling pool and is respectively connected to the water inlet pipe and the water outlet pipe, thereby ensuring that the water inlet pipe, the water outlet pipe and the cooling pool are interconnected.

7. The cooling device for supercritical extraction process according to claim 2, characterized in that: The cooling frame of the cooling pool stores cooling water inside, and the liquid level of the cooling water is higher than the outlet pipe and lower than the upper layer of the feeding pipe.

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