Leaching liquid discharging device

Abstract

An extraction liquid outlet device belongs to the field of plant raw material extraction and comprises an extraction tank, a liquid extraction pipe with an air cylinder is arranged at an upper sealing opening of the extraction tank, the liquid extraction pipe is fixed with an air cylinder shaft, the air cylinder shaft is a hollow shaft, a filter cartridge is fixed at the end of the lower portion of the liquid extraction pipe, and the top end of the liquid extraction pipe is connected with an inlet of a vacuum buffer tank through a vacuum hose. When the leaching solution needs to be pumped out, the leaching solution is vacuumized through a vacuum system, the leaching solution is pumped into the solution pumping pipe and enters the vacuum buffer tank through the air cylinder shaft and the vacuum pipeline in sequence, when the liquid level in the buffer tank reaches the maximum height, the vacuum system is stopped, and the solution in the buffer tank passes through a bottom solution outlet and is fed into the next working procedure through the solution outlet pump. According to the extraction liquid outlet device, the liquid extraction pipe with the air cylinder is arranged at the upper sealing head of the extraction tank, the hollow air cylinder shaft serves as a liquid channel, the extraction liquid is extracted from the upper sealing head, extraction of the extraction liquid is smooth, and the problem that extraction and drainage of the extraction liquid are not smooth is solved.

Description

Technical Field

[0001] The utility model belongs to the field of plant component extraction, and specifically relates to an extraction liquid discharging device for extracting liquid from plant raw materials. Background Art

[0002] In various solvent extraction equipment for plant raw materials, vertical extraction tanks are usually used. The crushed raw materials are put into the feeding port of the upper head of the extraction tank. After heating and extracting with a certain solvent and the raw materials, the extraction liquid needs to be pumped out. A slag discharging head cover is provided at the bottom of the extraction tank, and there is a flat filter plate and a valve at the liquid outlet pipe on the head cover. After the extraction liquid is pumped out from the filter plate, the head cover of the tank is opened to discharge the residue. In order to ensure the smooth flow of the extraction liquid, the raw materials are generally cut into larger pieces, which will lead to incomplete extraction of the active ingredients and a lower yield of the finished product. In order to obtain a higher extraction rate, the raw materials need to be crushed and soaked in the solvent sufficiently, and the active ingredients are extracted and filtered. However, the filter plate is often blocked by fine powder raw materials, making the extraction liquid pumping unsmooth. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an extraction liquid discharging device. By setting a liquid extraction pipe with a cylinder at the upper head of the extraction tank, the extraction liquid is pumped out from the upper head to solve the problem of unsmooth pumping of the extraction liquid.

[0004] To solve the above technical problem, the utility model provides an extraction liquid discharging device, including an extraction tank. A liquid extraction pipe with a cylinder is provided at the upper seal of the extraction tank. The liquid extraction pipe is fixed to the cylinder shaft. The cylinder shaft is a hollow shaft, and the inner cavity of the liquid extraction pipe is communicated with the inner cavity of the cylinder shaft. A filter cylinder is fixed at the lower end of the liquid extraction pipe. The top of the liquid extraction pipe is connected to the inlet of a vacuum buffer tank through a vacuum hose. The liquid outlet at the bottom of the vacuum buffer tank is connected to a liquid outlet pump. The gas outlet at the top of the vacuum buffer tank is connected to a vacuum system through a cooler and a receiving tank.

[0005] As a further description of the above technical solution:

[0006] The filter suction cylinder is cylindrical. The upper and lower ends and the side wall of the filter suction cylinder are all composed of stainless steel wire strips arranged. There are gaps between the wire strips, and the width of the gaps is 0.3 mm.

[0007] As a further description of the above technical solution:

[0008] There are sealing rings at the connection between the liquid extraction pipe and the cylinder shaft and between the two ends of the cylinder shaft and the inner wall of the cylinder. A positioning piston is fixed on the cylinder shaft to prevent the extraction liquid from entering the cylinder.

[0009] As a further description of the above technical solution:

[0010] The two ends of the cylinder body of the cylinder are provided with intake and exhaust regulating valves. An O-ring seal is provided between the positioning piston and the cylinder wall to seal the cylinder and enable the cylinder to lift and lower normally during intake and exhaust.

[0011] As a further description of the above technical solution:

[0012] A glass sight glass is provided at the top of the cylinder shaft. When evacuating and discharging the liquid, it is possible to see whether the liquid is flowing out through the glass sight glass. If no liquid is drawn out of the glass sight glass, the intake and exhaust regulating valve of the cylinder can be operated to push the liquid extraction pipe down a certain position to extract the liquid.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0014] When there is leaching solution in the extraction tank that needs to be drawn out, the intake and exhaust regulating valve is controlled according to the height of the leaching solution level, so that the cylinder shaft drives the liquid extraction pipe to move down, immersing the filter body cylinder into the leaching solution. The vacuum system is evacuated to draw the leaching solution into the inner cavity of the liquid extraction pipe, and it passes through the cylinder shaft and the vacuum pipeline into the vacuum buffer tank in sequence. When the liquid level in the buffer tank reaches the highest level, the vacuum system is stopped. The liquid in the buffer tank passes through the bottom liquid outlet and is sent to the next process by the liquid outlet pump. The residual gas in the vacuum buffer tank is cooled and liquefied by the cooler and collected by the receiving tank. The leaching solution discharging device of the present utility model, by arranging a liquid extraction pipe with a cylinder at the upper head of the extraction tank and using the hollow cylinder shaft as the liquid channel, draws out the leaching solution from the upper head, and the leaching solution is drawn out smoothly, solving the problem of unsmooth pumping and discharging of the leaching solution. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the leaching solution discharging device of the present utility model.

[0016] Legend Explanation:

[0017] 10 Extraction tank; 11 Upper seal; 12 Liquid extraction pipe; 13, Filter cylinder; 20, Cylinder; 21, Cylinder shaft; 22, Piston; 23, Intake and exhaust regulating valve; 24, Glass sight glass; 30 Vacuum hose; 40 Vacuum buffer tank; 50 Cooler; 60 Receiving tank; 70 Liquid outlet pump. Detailed Embodiment

[0018] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0019] A leaching solution discharging device, as Figure 1As shown in the figure, it includes an extraction tank 10. At the upper seal 11 of the extraction tank 10, there is a liquid extraction pipe 12 with a cylinder 20. The liquid extraction pipe 12 is fixed to the cylinder shaft 21 of the cylinder 20. The cylinder shaft 21 is a hollow shaft, and the inner cavity of the liquid extraction pipe 12 communicates with the inner cavity of the cylinder shaft 21. There are sealing rings at the connection between the liquid extraction pipe 12 and the cylinder shaft 21 and between the two ends of the cylinder shaft 21 and the inner wall of the cylinder to prevent the extraction liquid from entering the cylinder 20. At both ends of the cylinder body of the cylinder 20, there are air inlet and exhaust regulating valves 23. A positioning piston 22 is fixed on the cylinder shaft 21, and an O-ring is provided between the positioning piston 22 and the cylinder wall to seal the cylinder and enable the cylinder to lift and lower normally when admitting and exhausting air. At the top of the cylinder shaft 20, there is a glass sight glass 24. When evacuating and extracting liquid, it can be seen through the glass sight glass 24 whether the liquid is flowing out. If no liquid is extracted from the glass sight glass 24, the air inlet and exhaust regulating valve 24 of the cylinder 20 can be operated to push the liquid extraction pipe 12 down a certain position to extract the liquid. At the lower end of the liquid extraction pipe 12, a filter cylinder 13 is fixed. The filter cylinder 13 is cylindrical, and the upper and lower ends and the side wall of the filter cylinder 13 are all composed of stainless steel wire strips. There is a gap with a width of 0.3 mm between the stainless steel wire strips on the side wall. The top of the liquid extraction pipe 12 is connected to the inlet of a vacuum buffer tank 40 through a vacuum hose 30. The liquid outlet at the bottom of the vacuum buffer tank 40 is connected to a liquid outlet pump 70. The gas outlet at the top of the vacuum buffer tank 40 is connected to a vacuum system through a cooler 50 and a receiving tank 60.

[0020] When there is leaching liquid in the extraction tank 10 that needs to be extracted, the air inlet and exhaust regulating valve 23 is controlled according to the height of the leaching liquid level, so that the cylinder shaft 21 drives the liquid extraction pipe 12 to move down, immersing the filter cylinder 13 in the leaching liquid. By evacuating through the vacuum system, the leaching liquid is pumped into the inner cavity of the liquid extraction pipe 12, and then passes through the cylinder shaft 21 and the vacuum pipeline 30 into the vacuum buffer tank 40 in sequence. When the liquid level in the buffer tank 40 reaches the highest level, the vacuum system is stopped, and the liquid in the buffer tank 40 is sent to the next process by the liquid outlet pump 70 through the liquid outlet at the bottom. The residual gas in the vacuum buffer tank 40 is cooled and liquefied by the cooler 50 and collected by the receiving tank 60. The leaching liquid extraction device of the present utility model solves the problem of unsmooth extraction and discharge of leaching liquid by arranging a liquid extraction pipe 12 with a cylinder and a liquid extraction cylinder 13 at the upper head 11 of the extraction tank 10, using the hollow cylinder shaft 21 as the liquid passage, and extracting the leaching liquid smoothly from above.

[0021] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the present utility model.

Claims

1. A device for discharging an extractant, comprising an extraction tank (10), characterized in that: A liquid extraction pipe (12) with a cylinder (20) is provided at the upper sealing opening (11) of the extraction tank (10). The liquid extraction pipe (12) is fixed to the cylinder shaft (21) of the cylinder (20). The cylinder shaft (21) is a hollow shaft. The inner cavity of the liquid extraction pipe (12) is communicated with the inner cavity of the cylinder shaft (21). A filter cartridge (13) is fixed at the lower end of the liquid extraction pipe (12). The top end of the liquid extraction pipe (12) is connected to the inlet of a vacuum buffer tank (40) through a vacuum hose (30). The liquid outlet at the bottom of the vacuum buffer tank (40) is connected to a liquid outlet pump (70). The gas outlet at the top of the vacuum buffer tank (40) is connected to a vacuum system through a cooler (50) and a receiving tank (60).

2. The extract discharging device according to claim 1, characterized in that: The filter cartridge (13) is cylindrical in shape, and the upper and lower ends and the side wall of the filter cartridge (13) are composed of stainless steel wire strips, with gaps between the stainless steel wire strips on the side wall.

3. The extract discharging device according to claim 2, characterized in that: The gap width is 0.3 mm.

4. The extract discharging device according to claim 1 or 2, characterized in that: There are sealing rings at the joints between the liquid extraction pipe (12) and the cylinder shaft (21) and between the two ends of the cylinder shaft (21) and the inner wall of the cylinder.

5. The extract discharging device according to claim 1 or 2, characterized in that: A positioning piston (22) is fixed on the cylinder shaft (21), an O-type sealing ring is arranged between the positioning piston (22) and the cylinder wall, and intake and exhaust regulating valves (23) are arranged on both end sides of the cylinder body of the cylinder (20).

6. The extract discharging device according to claim 5, characterized in that: The top end of the cylinder shaft (21) is provided with a glass sight glass (24).

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