Oil extraction device

Abstract

The oil extraction device comprises a leaching tank, a separation tank, a solvent tank, a condenser, a siphon pipeline, a first circulating pipeline and a hydrothermal jacket, the leaching tank is used for storing powder to be subjected to oil extraction, and the solvent tank is used for storing an oil extraction solvent; the two ends of the siphon pipeline communicate with the leaching tank and the separation tank correspondingly, and a port of the siphon pipeline extends into the leaching tank. The separation tank is heated by arranging the hydrothermal jacket, after an oil extraction solvent flows into the separation tank along with extraction oil, the solvent is heated to be changed into gas, the gas flows into the condenser through the first circulating pipe, and the gas is condensed into liquid by the condenser and then flows into the leaching tank through the return pipe again for secondary extraction; therefore, the oil extraction solvent in the leaching tank is always in a sufficient state, the sufficient oil extraction solvent can continuously extract oil to be extracted, a fresh solvent is continuously and circularly added into the extraction process, and the extraction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil extraction, in particular to an oil extraction device. Background Art

[0002] The main methods for extracting oil are mechanical pressing and solvent extraction. Mechanical pressing is a method of extracting oil by squeezing oil out of oil with the help of mechanical external force. Due to physical limits, about 8-16% of oil remains in the oil cake after pressing. In order to fully extract the oil, the extraction method is also required to extract the residual oil.

[0003] At present, the main process used for oil extraction by leaching is n-hexane extraction, and it also includes supercritical CO2 extraction. Supercritical CO2 extraction has the advantages of non-toxic, odorless, non-flammable solvents, no organic solvent residue in the product, mild extraction conditions, and can retain natural active ingredients to the maximum extent.

[0004] The invention with the publication number CN1298408C proposes an oil extraction method and device, including an extraction chamber for receiving oil-containing materials, the extraction chamber including a solvent spray injection system, the system is connected to a high-pressure solvent supply circuit part through an inlet, the extraction chamber is also connected to a low-pressure circuit part through an outlet, and the low-pressure circuit part is connected to a gas recovery vacuum pump system. However, the above oil extraction device is not convenient for recycling the solvent consumed in the extraction process, resulting in the solvent recovery being mostly stopped or recovered only after the extraction is completed, and the extraction efficiency is low. Therefore, an oil extraction device is proposed to solve the above problem. Utility Model Content

[0005] In view of this, the utility model proposes an oil extraction device, which heats the separation tank by arranging a water heating jacket. After the extraction solvent follows the extracted oil into the separation tank, the solvent is heated to become a gas and flows into the interior of the condenser through a first circulation pipe. After being condensed into liquid by the condenser, it flows into the interior of the leaching tank through a reflux pipe again for further extraction, so that the extraction solvent in the leaching tank is always in a sufficient state. The sufficient extraction solvent can continuously extract the oil to be extracted, and fresh solvent is continuously circulated to join the extraction process, thereby improving the extraction efficiency.

[0006] The technical solution of the utility model is implemented as follows: The utility model provides an oil extraction device, including an extraction tank, a separation tank, a solvent tank, a condenser, a siphon pipeline, a first circulation pipeline and a water heating jacket, wherein:

[0007] The leaching tank is used to store the oil powder to be extracted, and the solvent tank is used to store the oil extraction solvent;

[0008] The two ends of the siphon pipeline are respectively connected to the leaching tank and the separation tank, and the port of the siphon pipeline extends to the interior of the leaching tank;

[0009] A liquid supply pipe is connected between the solvent tank and the leaching tank, and a reflux pipe is connected between the leaching tank and the condenser, and the reflux pipe is used for circulating the condensed oil extraction solvent;

[0010] The first circulation pipeline is connected to the separation tank and the condenser;

[0011] A hydrothermal jacket is arranged on the peripheral side of the separation tank and is used to heat the separation tank.

[0012] On the basis of the above technical solution, preferably, a circulating liquid outlet pipe is connected between the solvent tank and the condenser, and both ends of the reflux pipe are respectively connected to the circulating liquid outlet pipe and the liquid supply pipe, and a first three-way valve is provided at the connection between the reflux pipe and the liquid supply pipe, and the first three-way valve is used to regulate the on-off of the liquid supply pipe and one end of the reflux pipe, and a second three-way valve is provided at the connection between the reflux pipe and the circulating liquid outlet pipe, and the second three-way valve is used to regulate the on-off of the circulating liquid outlet pipe and the other end of the reflux pipe.

[0013] On the basis of the above technical solution, preferably, it also includes a shelf hole plate, wherein:

[0014] The material shelf hole plate is arranged inside the leaching tank and is used to support the oil powder to be extracted, and the liquid supply pipe is connected to the top of the material shelf hole plate.

[0015] On the basis of the above technical solution, preferably, the siphon pipeline extends to the interior of the leaching tank, and a port of the siphon pipeline located at one end inside the leaching tank is bent downward.

[0016] On the basis of the above technical solution, preferably, the leaching tank comprises a tank body and an airtight cover, wherein:

[0017] The airtight cover is detachably connected to the tank body through bolts, and the airtight cover is connected to an air-breaking valve.

[0018] On the basis of the above technical solution, preferably, it also includes an oil outlet pipeline and an oil supply pipeline, wherein:

[0019] An oil outlet pipeline is connected to the separation tank;

[0020] The oil supply pipeline is connected with the leaching tank and the separation tank, and the oil supply pipeline is connected with the side of the shelf hole plate away from the powdered material to be extracted.

[0021] On the basis of the above technical solution, preferably, it also includes a circulating water jacket, wherein:

[0022] A circulating water jacket is arranged on the outside of the leaching tank and is used for heating and keeping the leaching tank warm.

[0023] On the basis of the above technical solution, preferably, it also includes a liquid level sight glass, wherein:

[0024] A liquid level sight glass is arranged on the peripheral side of the solvent tank and is used to observe the height of the liquid in the solvent tank.

[0025] On the basis of the above technical solution, preferably, it also includes a plurality of pressure gauges and diaphragm vacuum pumps, wherein:

[0026] A plurality of pressure gauges are respectively arranged on the leaching tank, the separation tank, the solvent tank and the condenser, and are used to detect the gas pressure inside the tank;

[0027] A first communicating pipeline is connected between the diaphragm vacuum pump and the separation tank, and the diaphragm vacuum pump is used to extract gas from the separation tank.

[0028] On the basis of the above technical solution, preferably, it also includes a diaphragm compressor, wherein:

[0029] A second communicating pipeline is connected between the diaphragm compressor and the diaphragm vacuum pump, a third communicating pipeline is connected between the diaphragm compressor and the separation tank, and a second circulation pipeline is connected between the diaphragm compressor and the condenser.

[0030] The oil extraction device of the utility model has the following beneficial effects compared with the prior art:

[0031] (1) The extraction oil is heated by a hydrothermal jacket, and the solvent becomes gas and then is cooled by a condenser into liquid, and then flows into the interior of the reflux pipe and flows into the interior of the leaching tank through the reflux pipe to be extracted again. The separation tank is heated by a hydrothermal jacket. After the extraction solvent flows into the separation tank following the extraction oil, the separation tank is heated by a hydrothermal jacket, so that the solvent becomes gas and flows into the interior of the condenser through the first circulation pipe. After being condensed into liquid by the condenser, it flows into the interior of the leaching tank through the reflux pipe for extraction again, so that the extraction solvent in the leaching tank is always sufficient. Sufficient extraction solvent can continuously extract the oil to be extracted, and fresh solvent is continuously circulated to join the extraction process, thereby improving the extraction efficiency.

[0032] (2) By setting up a diaphragm compressor, after the cyclic extraction is completed, the oil supply pipeline is opened to allow all the solvent in the leaching tank to enter the separation tank. At this time, the diaphragm compressor can be started. Under the action of the diaphragm compressor, the residual solvent in the leaching tank and the separation tank can be quickly decompressed and vaporized. The vaporized solvent flows into the condenser through the second circulation pipeline, is condensed by the condenser, and is converted into liquid and flows into the solvent tank through the circulation liquid outlet pipe and is stored, so that the processed oil extraction solvent can be fully extracted and recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 This is a front view structural schematic diagram of an oil extraction device of the utility model;

[0035] Figure 2 It is a front view and cross-sectional view of the leaching tank and the separation tank of the oil extraction device of the utility model;

[0036] Figure 3 It is a left side cross-sectional view of the leaching tank and the separation tank of the oil extraction device of the utility model. DETAILED DESCRIPTION

[0037] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] like Figures 1 to 3As shown, the oil extraction device of the utility model comprises an extraction tank 1, a separation tank 21, a solvent tank 22, a condenser 23, a siphon pipeline 42, a first circulation pipeline 43 and a hydrothermal jacket 51, wherein the extraction tank 1 is used to store oil powder to be extracted, and the solvent tank 22 is used to store the oil extraction solvent; the two ends of the siphon pipeline 42 are respectively connected to the extraction tank 1 and the separation tank 21, and the port of the siphon pipeline 42 extends to the inside of the extraction tank 1; a liquid supply pipe 31 is connected between the solvent tank 22 and the extraction tank 1, and a reflux pipe 33 is connected between the extraction tank 1 and the condenser 23, and the reflux pipe 33 is used for circulating the condensed oil extraction solvent; the first circulation pipeline 43 is connected to the separation tank 21 and the condenser 23; the hydrothermal jacket 51 is arranged on the surrounding side of the separation tank 21, and is used to heat the separation tank 21.

[0039] In a specific implementation, the oil to be extracted is stored in the leaching tank 1, and the oil extraction solvent is stored in the solvent tank 22. When oil extraction is required, the oil extraction solvent is adjusted to flow to the inside of the leaching tank 1 through the liquid supply pipe 31. When the solvent overflows the top of the siphon line 42, the liquid supply pipe 31 is adjusted to disconnect. At this time, the oil to be extracted is extracted in the leaching tank 1, and the siphon line 42 sucks the extracted oil into the separation tank 21 through the siphon effect. The extracted oil is heated by the water heating jacket 51. At this time, the oil extraction solvent contained in the oil becomes gas and flows into the condenser 23 through the first circulation pipeline 43. After being cooled into liquid by the condenser 23, it flows into the reflux pipe 33 and flows into the leaching tank 1 again through the reflux pipe 33 to be extracted again, thereby realizing the recycling of the oil extraction solvent. The separation tank 21 is heated by arranging a hydrothermal jacket 51. After the oil extraction solvent flows into the separation tank 21 along with the extracted oil, the separation tank 21 is heated by the hydrothermal jacket 51, so that the solvent becomes gas and flows into the interior of the condenser 23 through the first circulation pipeline 43. After being condensed into liquid by the condenser 23, it flows into the interior of the leaching tank 1 again through the reflux pipe 33 for further extraction, so that the oil extraction solvent in the leaching tank 1 is always sufficient. The sufficient oil extraction solvent can continuously extract the oil to be extracted, and fresh solvent is continuously circulated to join the extraction process, thereby improving the extraction efficiency.

[0040] As a preferred embodiment, a circulating liquid outlet pipe 32 is connected between the solvent tank 22 and the condenser 23, and the two ends of the reflux pipe 33 are respectively connected to the circulating liquid outlet pipe 32 and the liquid supply pipe 31, and a first three-way valve 34 is provided at the connection between the reflux pipe 33 and the liquid supply pipe 31. The first three-way valve 34 is used to regulate the connection and disconnection of one end of the liquid supply pipe 31 and the reflux pipe 33. A second three-way valve 35 is provided at the connection between the reflux pipe 33 and the circulating liquid outlet pipe 32. The second three-way valve 35 is used to regulate the connection and disconnection of the other end of the circulating liquid outlet pipe 32 and the reflux pipe 33.

[0041] With this design, the solvent condensed from the condenser 23 can flow into the interior of the leaching tank 1 through the reflux pipe 33, and can also flow into and be stored in the interior of the solvent tank 22 through the circulating liquid outlet pipe 32. The connection and disconnection between the liquid supply pipe 31, the circulating liquid outlet pipe 32 and the reflux pipe 33 are regulated by the first three-way valve 34 and the second three-way valve 35.

[0042] As a preferred embodiment, it also includes a shelf plate 41 , wherein the shelf plate 41 is arranged inside the leaching tank 1 to support the oil powder to be extracted, and the liquid supply pipe 31 is connected to the top of the shelf plate 41 .

[0043] As a preferred embodiment, the siphon pipeline 42 extends to the interior of the leaching tank 1, and a port of the siphon pipeline 42 located at one end inside the leaching tank 1 is bent downward.

[0044] As a preferred embodiment, the leaching tank 1 includes a tank body 11 and an airtight cover 12, wherein the airtight cover 12 is detachably connected to the tank body 11 by bolts, and the airtight cover 12 is connected to a vent valve.

[0045] In a specific implementation, the oil to be extracted can be supplied into the interior of the leaching tank 1 by opening the airtight cover 12, and because the leaching tank 1 needs to be extracted under a vacuum environment, when it is necessary to open the airtight cover 12, the air pressure in the leaching tank 1 can be restored by opening the air-breaking valve and then opening the airtight cover 12.

[0046] As a preferred embodiment, it also includes an oil outlet pipeline 44 and an oil supply pipeline 45, wherein the oil outlet pipeline 44 is connected to the separation tank 21; the oil supply pipeline 45 is connected to the leaching tank 1 and the separation tank 21, and the oil supply pipeline 45 is connected to the side of the shelf hole plate 41 away from the oil powder to be extracted.

[0047] In a specific implementation, the oil after heating and separation can be discharged from the oil outlet pipeline 44 by opening the oil outlet pipeline 44 , and after the cyclic extraction is completed, the remaining solvent can be completely discharged into the interior of the separation tank 21 by opening the oil supply pipeline 45 .

[0048] As a preferred embodiment, it further comprises a circulating water jacket 52 , wherein the circulating water jacket 52 is arranged on the outside of the leaching tank 1 for heating and keeping the leaching tank 1 warm.

[0049] In a specific implementation, the inner part of the circulating water jacket 52 is circulated with heat-insulating water, and the leaching tank 1 is kept warm by the water, so that the leaching tank 1 can stably extract the oil to be extracted.

[0050] As a preferred embodiment, a liquid level sight glass 61 is further included, wherein the liquid level sight glass 61 is arranged on the peripheral side of the solvent tank 22 for observing the height of the liquid in the solvent tank 22 .

[0051] In a specific implementation, the liquid level height in the solvent tank 22 can be continuously observed through the liquid level sight glass 61 , and the outflow amount of the solvent in the solvent tank 22 can be inferred.

[0052] As a preferred embodiment, it also includes multiple pressure gauges 62 and a diaphragm vacuum pump 71, wherein the multiple pressure gauges 62 are respectively arranged on the leaching tank 1, the separation tank 21, the solvent tank 22 and the condenser 23, for detecting the air pressure inside the tank; a first connecting pipe 81 is connected between the diaphragm vacuum pump 71 and the separation tank 21, and the diaphragm vacuum pump 71 is used to extract the gas in the separation tank 21.

[0053] Specifically, when it is necessary to evacuate the air in the leaching tank 1, the separation tank 21, the solvent tank 22 and the condenser 23 to form a vacuum, the vacuum extraction can be performed by starting the diaphragm vacuum pump 71, and the vacuum extraction state can be continuously observed through the pressure gauge 62 during the extraction process.

[0054] As a preferred embodiment, it also includes a diaphragm compressor 72, wherein a second connecting pipeline 82 is connected between the diaphragm compressor 72 and the diaphragm vacuum pump 71, a third connecting pipeline 83 is connected between the diaphragm compressor 72 and the separation tank 21, and a second circulation pipeline 9 is connected between the diaphragm compressor 72 and the condenser 23.

[0055] In a specific implementation, after the cyclic extraction is completed, the oil supply pipeline 45 is opened to allow all the solvent in the leaching tank 1 to enter the interior of the separation tank 21. At this time, the diaphragm compressor 72 can be started. Under the action of the diaphragm compressor 72, the residual solvent in the leaching tank 1 and the separation tank 21 can be quickly decompressed and vaporized. The vaporized solvent flows into the interior of the condenser 23 through the second circulation pipeline 9, is condensed by the condenser 23, and is converted into liquid and flows into and is stored in the interior of the solvent tank 22 through the circulation liquid outlet pipe 32, so that the processed oil extraction solvent can be fully extracted and recycled.

[0056] It should be noted that the above pipelines are all equipped with control valves.

[0057] The working principle of the utility model is introduced as follows:

[0058] First, open the airtight cover 12 and feed the oil to be extracted to the top of the shelf plate 41 to complete the feeding. Then, start the diaphragm vacuum pump 71 to evacuate the leaching tank 1, the separation tank 21, the solvent tank 22 and the condenser 23. Adjust the first three-way valve 34 to connect the liquid supply pipe 31. At this time, the oil extraction solvent can flow to the inside of the leaching tank 1 through the liquid supply pipe 31. When the solvent overflows the top of the siphon line 42, adjust the first three-way valve 34 to disconnect the liquid supply pipe 31 and connect the reflux pipe 33. At this time, the oil to be extracted is extracted in the leaching tank 1. The siphon line 42 sucks the extracted oil into the inside of the separation tank 21 through the siphon effect. The extracted oil is heated by the water heating jacket 51. At this time, the oil extraction solvent contained in the oil becomes gas and flows into the inside of the condenser 23 through the first circulation pipe 43. After being cooled into liquid by the condenser 23, it flows into the inside of the reflux pipe 33 and flows into the inside of the leaching tank 1 again through the reflux pipe 33 to be extracted again, and the cyclic extraction is performed. After the cyclic extraction is completed, the oil supply pipeline 45 is opened to discharge all the residual solvent into the interior of the separation tank 21. At this time, the diaphragm compressor 72 can be started. Under the action of the diaphragm compressor 72, the residual solvent in the leaching tank 1 and the separation tank 21 can be quickly decompressed and vaporized. The vaporized solvent flows into the interior of the condenser 23 through the second circulation pipeline 9, is condensed by the condenser 23, and is converted into liquid and flows into and is stored in the interior of the solvent tank 22 through the circulation liquid outlet pipe 32.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An oil extraction device, characterized in that: The invention comprises a leaching tank (1), a separation tank (21), a solvent tank (22), a condenser (23), a siphon pipeline (42), a first circulation pipeline (43) and a water heating jacket (51), wherein: The extraction tank (1) is used to store the oil powder to be extracted, and the solvent tank (22) is used to store the oil extraction solvent; The two ends of the siphon pipeline (42) are respectively connected to the leaching tank (1) and the separation tank (21), and the end of the siphon pipeline (42) extends to the interior of the leaching tank (1); A liquid supply pipe (31) is connected between the solvent tank (22) and the leaching tank (1), and a reflux pipe (33) is connected between the leaching tank (1) and the condenser (23), wherein the reflux pipe (33) is used for circulating the condensed oil extraction solvent; The first circulation pipeline (43) is connected to the separation tank (21) and the condenser (23); A water heating jacket (51) is arranged on the peripheral side of the separation tank (21) and is used to heat the separation tank (21).

2. The oil extraction device according to claim 1, characterized in that: A circulating liquid outlet pipe (32) is connected between the solvent tank (22) and the condenser (23); two ends of the reflux pipe (33) are respectively connected to the circulating liquid outlet pipe (32) and the liquid supply pipe (31); a first three-way valve (34) is provided at the connection between the reflux pipe (33) and the liquid supply pipe (31); the first three-way valve (34) is used to regulate the connection between one end of the liquid supply pipe (31) and the reflux pipe (33); a second three-way valve (35) is provided at the connection between the reflux pipe (33) and the circulating liquid outlet pipe (32); the second three-way valve (35) is used to regulate the connection between the other end of the circulating liquid outlet pipe (32) and the reflux pipe (33).

3. The oil extraction device according to claim 1, characterized in that: It also includes a shelf hole plate (41), wherein: The material shelf orifice plate (41) is arranged inside the leaching tank (1) and is used to support the oil powder to be extracted, and the liquid supply pipe (31) is connected to the top of the material shelf orifice plate (41).

4. The oil extraction device according to claim 1, characterized in that: The siphon pipeline (42) extends to the interior of the leaching tank (1), and a port of the siphon pipeline (42) located at one end inside the leaching tank (1) is bent downward.

5. The oil extraction device according to claim 1, characterized in that: The leaching tank (1) comprises a tank body (11) and an airtight cover (12), wherein: The airtight cover (12) is detachably connected to the tank body (11) via bolts, and the airtight cover (12) is connected to an air-breaking valve.

6. The oil extraction device according to claim 3, characterized in that: It also includes an oil outlet pipeline (44) and an oil supply pipeline (45), wherein: An oil outlet pipeline (44) is connected to the separation tank (21); The oil supply pipeline (45) is connected to the leaching tank (1) and the separation tank (21), and the oil supply pipeline (45) is connected to the side of the shelf hole plate (41) away from the powdered material to be extracted.

7. The oil extraction device according to claim 1, characterized in that: It also includes a circulating water jacket (52), wherein: A circulating water jacket (52) is arranged on the outside of the leaching tank (1) and is used to heat and keep the leaching tank (1) warm.

8. The oil extraction device according to claim 1, characterized in that: Also included is a liquid level sight glass (61), wherein: A liquid level sight glass (61) is arranged on the peripheral side of the solvent tank (22) and is used to observe the height of the liquid in the solvent tank (22).

9. The oil extraction device according to claim 1, characterized in that: It also includes a plurality of pressure gauges (62) and a diaphragm vacuum pump (71), wherein: A plurality of pressure gauges (62) are respectively arranged on the leaching tank (1), the separation tank (21), the solvent tank (22) and the condenser (23) for detecting the gas pressure inside the tank; A first communication pipeline (81) is connected between the diaphragm vacuum pump (71) and the separation tank (21), and the diaphragm vacuum pump (71) is used to extract gas from the separation tank (21).

10. The oil extraction device according to claim 9, characterized in that: Also included is a diaphragm compressor (72), wherein: A second connecting pipeline (82) is connected between the diaphragm compressor (72) and the diaphragm vacuum pump (71), a third connecting pipeline (83) is connected between the diaphragm compressor (72) and the separation tank (21), and a second circulation pipeline (9) is connected between the diaphragm compressor (72) and the condenser (23).

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