A solvent separation device for plant oil extraction

Abstract

The utility model discloses a solvent separation device of vegetable oil extraction relates to the technical field of extraction separation, the utility model discloses a feed channel, separation disc, lower discharge channel, expansion mechanism, upper discharge channel and liquid level monitoring mechanism, the utility model discloses through multiple separation disc makes the enrichment hexane's refrigeration horizontal spread, the hexane in water body inside can rise more quickly and gather to the upper layer of water surface, compared with the waiting in the barrel inside and so on stationary, its separation rate is promoted, through the gas pump with gas is transported to the expansion piece inside through the gas pipe, makes the gasbag steady inflation, occupies the volume of liquid in the separation disc inside, makes the liquid level steady rise, the water level drives the liquid level float to rise, the solvent layer drives the solvent float to rise, relies on the monitoring camera real -time observation judgment gasbag's inflation cut -off point, until the solvent layer of vast majority is flowed out through the overflow tank, along the arc collecting cover and the inclined flow channel is discharged and is collected, and the stable rising liquid level is discharged and is the upper layer solvent.

Description

Technical Field

[0001] This utility model relates to the field of extraction and separation technology, specifically to a solvent separation device for vegetable oil extraction. Background Technology

[0002] In vegetable oil extraction processes, organic solvents such as n-hexane are commonly used as extraction media. Towards the end of the process, the gas discharged from the condenser outlet often contains uncondensed n-hexane solvent. To recover this solvent, a trapping device is typically used to capture it, forming a chilled water mixture rich in n-hexane.

[0003] Currently, the separation of these solvent and water mixtures mainly relies on the traditional static sedimentation method. This method places the mixture in a large storage tank or separation vessel, relying on the density difference between hexane and water to allow them to naturally separate into layers under gravity. The lighter hexane solvent floats to the top, while the heavier water sinks to the bottom. After separation, the upper solvent layer is recovered through a suction pipe or drain valve located at the top.

[0004] However, natural stratification within storage tanks or separation vessels results in low separation efficiency between solvent and water due to the height difference, hindering production efficiency as processing volumes increase. Furthermore, the process of extracting the upper solvent layer easily disturbs the stratified interface, causing some aqueous phase to be carried out along with it. This not only reduces the purity of the recovered solvent but may also affect subsequent processes and the recycling efficiency of the solvent. Utility Model Content

[0005] To address the aforementioned problems, this invention provides a solvent separation device for vegetable oil extraction, which solves the problem that the aqueous phase is easily discharged along with the solvent during solvent separation, reducing the purity of the recovered solvent.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a solvent separation device for vegetable oil extraction, comprising a feeding channel, a separation disc, a lower discharge channel, an expansion mechanism, an upper discharge channel, and a liquid level monitoring mechanism. The separation discs are arranged in multiple sets in an array. The feeding channel is located on one side of the separation disc, with its discharge port located above the feeding channel. The lower discharge channel is fixedly installed at the bottom of the separation disc, with its inlet connected to the bottom of the separation disc. The expansion mechanism is located on the surface of the separation disc, with its expansion end fixedly installed on the inner wall near the bottom of the separation disc. The upper discharge channel is fixedly installed on the rear side of the separation disc. The liquid level monitoring mechanism is located on the surface of the separation disc, with its moving end located inside the separation disc.

[0007] The feeding channel includes a main feeding pipe, a first ball valve, and a branch feeding pipe. The branch feeding pipe is fixedly installed on the surface of the main feeding pipe, and the bottom end of the branch feeding pipe is located inside the separation disc. The first ball valve is located at the connection between the main feeding pipe and the branch feeding pipe.

[0008] The separation plate includes a ring, an overflow groove, and a base. The overflow groove is provided on one side of the top of the ring, and the base is fixedly installed at the bottom of the ring. The cross-section of the base is an inverted trapezoid.

[0009] The discharge channel includes a discharge pipe and a second ball valve. The discharge pipe is fixedly installed at the bottom of the separation disc, and the second ball valve is located at the connection between the discharge pipe and the separation disc.

[0010] The expansion mechanism includes an air pump, an air supply pipe, a three-way solenoid valve, and an expansion component. The air pump is fixedly installed on the outside of the separation plate, and the expansion component is fixedly installed on the inner wall of the separation plate. One end of the air supply pipe is connected to the output end of the air pump, and the other end is connected to the top of the expansion component. The three-way solenoid valve is located on the surface of the air supply pipe.

[0011] The expansion component consists of a venting ring and an airbag. The venting ring is fixedly connected to the inner wall of the separation disc, and the airbag is fixedly installed inside the venting ring. There are multiple sets of airbags, which are arranged at equal intervals. Both the venting ring and the airbag maintain a certain distance from the inner bottom of the separation disc.

[0012] The upper discharge channel includes an arc-shaped collection hood and an inclined flow channel. The arc-shaped collection hood is fixedly installed on the outside of the separation disc, and the inclined flow channel is fixedly installed on the surface of the arc-shaped collection hood.

[0013] The liquid level monitoring mechanism includes a transparent scale plate, a guide rod, a solvent float, a water level float, and a monitoring camera. The transparent scale plate is embedded in the surface of the separation plate, the guide rod is fixedly installed on the top of the transparent scale plate and is located inside the separation plate, the solvent float and the water level float are both slidably sleeved on the surface of the guide rod, and the solvent float is located above the water level float. The monitoring camera is set on the outside of the separation plate and is correspondingly set with the transparent scale plate.

[0014] The beneficial effects of this utility model are as follows: This invention utilizes multiple separation discs to allow the frozen hexane-enriched layer to spread out horizontally, enabling the hexane inside the water to rise and collect at the surface more quickly. Compared to concentrating it inside the cylinder and waiting for it to settle, the separation rate is improved. A gas pump delivers gas through a gas pipe to the expansion chamber, causing the gasbag to expand steadily, occupying the volume of the liquid inside the separation disc. This results in a stable rise in the liquid level. The water layer causes the water level float to rise, and the solvent layer causes the solvent float to rise. A monitoring camera continuously observes and determines the expansion cutoff point of the gasbag until most of the solvent layer flows out through the overflow channel and is collected along the arc-shaped collection hood and inclined flow channel. This method of steadily raising the liquid level and discharging the upper layer of solvent minimizes disturbance to the solvent layer compared to directly sucking the upper layer of solvent from the top, reducing the possibility of some water accidentally being discharged along with the solvent. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the first partial structure of this utility model; Figure 3 This is a partial split diagram of the present invention; Figure 4 This is a schematic cross-sectional view of the third part of this utility model; Figure 5 yes Figure 4 Enlarged schematic diagram of section A in the middle.

[0016] Reference numerals: 1. Feeding channel; 101. Main feed pipe; 102. First ball valve; 103. Sub-feed pipe; 2. Separating disc; 201. Ring body; 202. Overflow trough; 203. Chassis; 3. Lower discharge channel; 301. Discharge pipe; 302. Second ball valve; 4. Expansion mechanism; 401. Air pump; 402. Air supply pipe; 403. Three-way solenoid valve; 404. Expansion component; 5. Upper discharge channel; 501. Arc-shaped collection hood; 502. Inclined flow channel; 6. Liquid level monitoring mechanism; 601. Transparent scale plate; 602. Guide rod; 603. Solvent float; 604. Water level float; 605. Monitoring camera. Detailed Implementation

[0017] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0018] Figure 1 - Figure 5 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figure 1 - Figure 5 The present invention will be further described below.

[0019] A solvent separation device for vegetable oil extraction includes a feed channel 1, a separation plate 2, a lower discharge channel 3, an expansion mechanism 4, an upper discharge channel 5, and a liquid level monitoring mechanism 6. The separation plate 2 is arranged in multiple sets in an array. The feed channel 1 is located on one side of the separation plate 2, and its discharge port is located above the feed channel 1. The lower discharge channel 3 is fixedly installed at the bottom of the separation plate 2, and its feed port is connected to the bottom of the separation plate 2. The expansion mechanism 4 is disposed on the surface of the separation plate 2, and its expansion end is fixedly installed on the inner wall near the bottom of the separation plate 2. The upper discharge channel 5 is fixedly installed on the rear side of the separation plate 2. The liquid level monitoring mechanism 6 is disposed on the surface of the separation plate 2, and its moving end is located inside the separation plate 2. Specifically, the process involves feeding hexane-enriched chilled water into the separation plate 2 through the feed channel 1, holding the hexane-containing chilled water to be separated in the separation plate 2, discharging the lower layer of separated water through the lower discharge channel 3, controlling the rise of the liquid level in the separation plate 2 through the expansion mechanism 4, discharging the upper layer of separated hexane solvent through the upper discharge channel 5, and detecting the liquid level position in the separation plate 2 through the liquid level monitoring mechanism 6.

[0020] The feeding channel 1 includes a main feeding pipe 101, a first ball valve 102 and a branch feeding pipe 103. The branch feeding pipe 103 is fixedly installed on the surface of the main feeding pipe 101, and the bottom end of the branch feeding pipe 103 is located inside the separation disc 2. The first ball valve 102 is located at the connection between the main feeding pipe 101 and the branch feeding pipe 103. Specifically, the hexane-enriched chilled water is transported through the main feed pipe 101 to the interior of each set of separation discs 2 via the sub-feed pipe 103, and the connection and disconnection between the main feed pipe 101 and the sub-feed pipe 103 are controlled by the first ball valve 102.

[0021] The separation plate 2 includes a ring 201, an overflow groove 202 and a base plate 203. An overflow groove 202 is provided on one side of the top of the ring 201, and a base plate 203 is fixedly installed at the bottom of the ring 201. The cross section of the base plate 203 is set in an inverted trapezoidal shape. Specifically, the ring 201 and the chassis 203 hold the hexane-enriched chilled water to be separated. During the process of the liquid rising to the surface through the overflow tank 202, the solvent layer can overflow and be discharged and collected through the upper discharge channel 5. The bottom of the chassis 203 is recessed to keep the expansion member 404 at a distance from it, so as to avoid the expansion member 404 from obstructing the discharge of the water layer.

[0022] The lower discharge channel 3 includes a discharge pipe 301 and a second ball valve 302. The discharge pipe 301 is fixedly installed at the bottom of the chassis 203, and the second ball valve 302 is located at the connection between the discharge pipe 301 and the chassis 203. Specifically, the water layer is discharged and collected through the discharge pipe 301, and the connection and disconnection between the chassis 203 and the discharge pipe 301 are controlled by the second ball valve 302.

[0023] The expansion mechanism 4 includes an air pump 401, an air supply pipe 402, a three-way solenoid valve 403, and an expansion member 404. The air pump 401 is fixedly installed on the outside of the ring 201, and the expansion member 404 is fixedly installed on the inner wall of the ring 201. One end of the air supply pipe 402 is connected to the output end of the air pump 401, and the other end is connected to the top of the expansion member 404. The three-way solenoid valve 403 is disposed on the surface of the air supply pipe 402. Specifically, the gas is delivered from the gas supply pipe 402 to the expansion member 404 by the air pump 401, causing the expansion member 404 to expand. The flow direction of the gas at the gas supply pipe 402 is controlled by the three-way solenoid valve 403, which facilitates the control of the gas delivery to the expansion member 404 or the discharge of the gas from the expansion member 404.

[0024] The expansion component 404 consists of a venting ring and an airbag. The venting ring is fixedly connected to the inner wall of the ring body 201. The airbag is fixedly installed inside the venting ring. There are multiple sets of airbags, which are arranged at equal intervals. Both the venting ring and the airbag maintain a certain distance from the top surface of the chassis 203. Specifically, the gas is evenly delivered to each group of air bladders through the venting ring, so that each group of air bladders expands stably and ensures the stable rise of the liquid level. The distance between the venting ring, air bladder and chassis 203 allows the water layer to pass through the expansion member 404 and be discharged.

[0025] The upper discharge channel 5 includes an arc-shaped collection cover 501 and an inclined flow channel 502. The arc-shaped collection cover 501 is fixedly installed on the outside of the ring body 201, and the inlet of the arc-shaped collection cover 501 is correspondingly set with the overflow channel 202. The inclined flow channel 502 is fixedly installed on the surface of the arc-shaped collection cover 501. Specifically, the solvent layer overflowing when the liquid level rises is received by the arc-shaped collection hood 501, and the solvent is discharged by sliding down the inclined flow channel 502, so that it is collected uniformly.

[0026] The liquid level monitoring mechanism 6 includes a transparent scale plate 601, a guide rod 602, a solvent float 603, a water level float 604, and a monitoring camera 605. The transparent scale plate 601 is embedded in the surface of the ring 201. The guide rod 602 is fixedly installed on the top of the transparent scale plate 601 and is located inside the ring 201. The solvent float 603 and the water level float 604 are both slidably sleeved on the surface of the guide rod 602, and the solvent float 603 is located above the water level float 604. The overall density of the solvent float 603 is less than the density of the solvent, and the overall density of the water level float 604 is between the densities of the solvent and water. The monitoring camera 605 is set on the outside of the ring 201 and is correspondingly set with the transparent scale plate 601. Specifically, the transparent scale plate 601 facilitates the identification of the rising positions of the solvent float 603 and the water level float 604, the guide rod 602 limits the movement range of the solvent float 603 and the water level float 604, the solvent float 603 indicates the liquid level position of the solvent, and the water level float 604 indicates the interface position between water and solvent.

[0027] In summary: When using this invention, during the hexane solvent capture process, when the hexane-enriched chilled water is allowed to settle, it is transported to the interior of the separation plate 2 through the main feed pipe 101 and the branch feed pipe 103. When the monitoring camera 605 detects that the liquid level is close to the overflow tank 202, the first ball valve 102 is operated to disconnect the flow of that component feed pipe 103, and the liquid is transported to the interior of the remaining separation plates 2. The liquid then separates into layers inside the separation plates 2, with the water layer at the bottom and the solvent layer at the top. The solvent float 603 and the water level float 604 are driven by the liquid to slide and float upwards along the surface of the guide rod 602. The water level float 604 is located between the water layer and the solvent layer, and the solvent float 603 is located above the solvent layer. The monitoring camera 605 monitors the changes of both layers in real time, and the air pump 401 is operated to supply gas through the gas delivery pipe 40. 2. The liquid is conveyed to the expansion member 404 and then to each group of air bladders through the ventilation ring, causing it to expand evenly. The air bladders occupy the space inside the separation plate 2, forcing the liquid to float upwards. The gas is controlled to be conveyed stably, so that the solvent layer moves steadily upwards and overflows from the overflow tank 202, minimizing the disturbance of the solvent layer during the separation operation and preventing some water from being accidentally discharged with the solvent. The solvent is discharged through the arc-shaped collection hood 501 and the inclined flow channel 502 and is collected and recycled. After most of the solvent is discharged from the upper discharge channel 5, the second ball valve 302 is operated to connect the discharge pipe 301 to the chassis 203. A small amount of solvent and water layer is discharged from the chassis 203 and collected and recycled for reuse, so that it can participate in the solvent capture process again. The three-way solenoid valve 403 is operated to allow the gas inside the expansion member 404 to be discharged, completing the solvent separation step.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A solvent separation device for vegetable oil extraction, characterized in that, The system includes a feeding channel (1), a separating disc (2), a lower discharge channel (3), an expansion mechanism (4), an upper discharge channel (5), and a liquid level monitoring mechanism (6). The separating discs (2) are arranged in multiple groups in an array. The feeding channel (1) is located on one side of the separating disc (2), and its discharge port is located above the feeding channel (1). The lower discharge channel (3) is fixedly installed at the bottom of the separating disc (2), and its inlet is connected to the bottom of the separating disc (2). The expansion mechanism (4) is located on the surface of the separating disc (2), and its expansion end is fixedly installed on the inner wall near the bottom of the separating disc (2). The upper discharge channel (5) is fixedly installed on the rear side of the separating disc (2). The liquid level monitoring mechanism (6) is located on the surface of the separating disc (2), and its moving end is located inside the separating disc (2).

2. The solvent separation device for vegetable oil extraction according to claim 1, characterized in that, The feeding channel (1) includes a main feeding pipe (101), a first ball valve (102) and a branch feeding pipe (103). The branch feeding pipe (103) is fixedly installed on the surface of the main feeding pipe (101), and the bottom end of the branch feeding pipe (103) is located inside the separation disc (2). The first ball valve (102) is located at the connection between the main feeding pipe (101) and the branch feeding pipe (103).

3. The solvent separation device for vegetable oil extraction according to claim 1, characterized in that, The separation plate (2) includes a ring (201), an overflow groove (202) and a base (203). An overflow groove (202) is provided on one side of the top of the ring (201), and a base (203) is fixedly installed at the bottom of the ring (201). The cross section of the base (203) is set in an inverted trapezoidal shape.

4. The solvent separation device for vegetable oil extraction according to claim 1, characterized in that, The lower discharge channel (3) includes a discharge pipe (301) and a second ball valve (302). The discharge pipe (301) is fixedly installed at the bottom of the separation disc (2), and the second ball valve (302) is located at the connection between the discharge pipe (301) and the separation disc (2).

5. The solvent separation device for vegetable oil extraction according to claim 1, characterized in that, The expansion mechanism (4) includes an air pump (401), an air supply pipe (402), a three-way solenoid valve (403), and an expansion component (404). The air pump (401) is fixedly installed on the outside of the separation plate (2), and the expansion component (404) is fixedly installed on the inner wall of the separation plate (2). One end of the air supply pipe (402) is connected to the output end of the air pump (401), and the other end is connected to the top of the expansion component (404). The three-way solenoid valve (403) is disposed on the surface of the air supply pipe (402).

6. The solvent separation apparatus for vegetable oil extraction according to claim 5, characterized in that, The expansion component (404) consists of a ventilation ring and an air bladder. The ventilation ring is fixedly connected to the inner wall of the separation disc (2). The air bladder is fixedly installed inside the ventilation ring. There are multiple sets of air bladders, which are arranged at equal intervals. The ventilation ring and the air bladder maintain a certain distance from the bottom inner side of the separation disc (2).

7. The solvent separation apparatus for vegetable oil extraction according to claim 1, characterized in that, The upper discharge channel (5) includes an arc-shaped collection cover (501) and an inclined flow channel (502). The arc-shaped collection cover (501) is fixedly installed on the outside of the separation disc (2), and the inclined flow channel (502) is fixedly installed on the surface of the arc-shaped collection cover (501).

8. The solvent separation device for vegetable oil extraction according to claim 1, characterized in that, The liquid level monitoring mechanism (6) includes a transparent scale plate (601), a guide rod (602), a solvent float (603), a water level float (604), and a monitoring camera (605). The transparent scale plate (601) is embedded in the surface of the separation plate (2). The guide rod (602) is fixedly installed on the top of the transparent scale plate (601) and is located inside the separation plate (2). The solvent float (603) and the water level float (604) are both slidably sleeved on the surface of the guide rod (602), and the solvent float (603) is located above the water level float (604). The monitoring camera (605) is set on the outside of the separation plate (2) and is correspondingly set with the transparent scale plate (601).

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