Extraction tower

Abstract

The invention discloses an extraction tower, which comprises a tower body, a main shaft, a reciprocating lifting member, an autorotation member, a motor and a movable sieve plate group, the main shaft is rotatably arranged in the tower body, the main shaft and the tower body are coaxially arranged, the reciprocating lifting member is fixedly installed on the top of the main shaft, the reciprocating lifting member is used for enabling the main shaft to do reciprocating lifting motion, and the autorotation member is used for rotating the main shaft. The top and the bottom of the rotation part are fixedly connected with the main shaft and the bottom inner wall of the tower body respectively, the rotation part is used for enabling the main shaft to rotate, and the multiple movable sieve plate sets are evenly distributed outside the main shaft. The device not only can oscillate and scatter a liquid material in the vertical direction, but also can stir and scatter the liquid material in the horizontal direction, double multi-stage dispersion operation is achieved, the solvent liquid material mixing and contacting effect is improved, and the solvent liquid material contacting degree is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of extraction processing equipment, and in particular to an extraction tower. Background Art

[0002] An extraction tower, also known as a liquid-liquid extraction tower or a solvent extraction tower, is a device used to separate mixtures, and is mainly applied in industries such as petroleum, chemical engineering, pharmaceuticals, food, and biotechnology. Its working principle is to utilize the different solubility characteristics of different substances in two immiscible solvents. After mixing, the target component in one solvent can be transferred to the other solvent, thereby achieving separation; During the above extraction operation process, it is necessary to disperse and mix the two solvents and make them fully contact. The extraction tower can achieve this purpose. For example, the Chinese invention patent with the publication number CN117018678B discloses a vibrating extraction tower. This extraction tower drives a connecting bar to move vertically back and forth through a reciprocating driving member, and the connecting bar drives a movable plate to move up and down in the tower to disperse and mix the solvent liquid materials for full contact. At the same time, a plurality of hollow tubes are provided. When the connecting bar moves up and down, it drives the hollow tubes to engage with a vertically arranged rack, so that the hollow tubes can rotate self - and drive the steel wire strips to rotate, thereby improving the dispersion effect; However, when the above extraction tower is actually operating, first, the solvent liquid materials are dispersed by the reciprocating movable plate, and the liquid materials are only vertically impacted and oscillated, and the mixing and contact effect is limited. Then, the range of dispersing and stirring the liquid materials between the movable plates by the self - rotating hollow tubes vertically arranged with the rack is relatively limited. In summary, the mixing and contact effect of this extraction tower on the liquid materials is relatively low. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above - mentioned technical deficiencies, and propose an extraction tower to solve the technical problem of relatively low mixing and contact effect in the prior art.

[0004] To achieve the above - mentioned technical purpose, the present invention adopts the following technical solutions: The present invention provides an extraction tower, which includes a tower body, a main shaft, a reciprocating lifting member, a self - rotating member, a motor, and a moving sieve plate group. The main shaft is rotatably arranged in the tower body, and the main shaft is coaxially arranged with the tower body. The reciprocating lifting member is fixedly installed at the top of the main shaft, and the reciprocating lifting member is used to make the main shaft perform reciprocating lifting motion. The top and bottom of the self - rotating member are respectively fixedly connected to the main shaft and the bottom inner wall of the tower body, and the self - rotating member is used to make the main shaft rotate. There are several moving sieve plate groups, and the moving sieve plate groups are evenly distributed outside the main shaft.

[0005] In some embodiments, an upper fixed sieve plate and a lower fixed sieve plate are respectively provided at the inner top and inner bottom of the tower body. The outer edges of the upper fixed sieve plate and the lower fixed sieve plate are fixedly connected to the inner wall of the tower body. The top of the reciprocating lifting member penetrates to the top of the upper fixed sieve plate, and the outside of the reciprocating lifting member is slidably connected to the penetration part of the upper fixed sieve plate. The bottom of the self-rotating member is fixedly connected to the inner bottom wall of the tower body, and the top of the self-rotating member penetrates to the top of the lower fixed sieve plate.

[0006] In some embodiments, the reciprocating lifting member includes a reciprocating lead screw and a connecting sleeve. The reciprocating lead screw is installed at the inner top of the tower body. The top end of the reciprocating lead screw penetrates to the outside of the top of the tower body. The connecting sleeve is threadedly sleeved on the outside of the reciprocating lead screw. The bottom end of the connecting sleeve is rotatably connected to the top end of the main shaft. The connecting sleeve penetrates to one side of the top of the upper fixed sieve plate, and the outer wall of the connecting sleeve is slidably connected to the penetration part of the upper fixed sieve plate. The top end of the reciprocating lead screw is adapted to the motor.

[0007] In some embodiments, the self-rotating member includes a spiral shaft and a matching sleeve. The bottom end of the spiral shaft is fixedly connected to the center of the inner bottom wall of the tower body. The matching sleeve is threadedly sleeved on the outside of the spiral shaft. The top end of the matching sleeve is fixedly connected to the bottom end of the main shaft. The matching sleeve penetrates to one side of the top of the lower fixed sieve plate.

[0008] In some embodiments, the motor is fixedly installed on the top of the tower body, and the top end of the reciprocating lead screw is fixedly connected to one end of the output shaft of the motor.

[0009] In some embodiments, on the sides of the upper fixed sieve plate and the lower fixed sieve plate facing away from each other, there are respectively provided stirring vanes, and the two stirring vanes are respectively fixedly sleeved on the outside of the connecting sleeve and the matching sleeve.

[0010] In some embodiments, the moving sieve plate group includes a fixed sleeve, a plurality of elastic members, a sliding sleeve and a plurality of moving sieve plates. The fixed sleeve is fixedly sleeved on the outside of the main shaft. A plurality of semi-circular grooves are respectively formed on the outer sides of the top end and the bottom end of the fixed sleeve. The plurality of elastic members are respectively arranged in the plurality of semi-circular grooves. The sliding sleeve is slidably sleeved on the outside of the fixed sleeve. One sides of the plurality of elastic members are fixedly connected to the inner wall of the sliding sleeve. The plurality of moving sieve plates are evenly sleeved on the outside of the sliding sleeve.

[0011] In some embodiments, the elastic member includes a plurality of fixing rods and a plurality of springs. The plurality of fixing rods are respectively fixedly arranged in the plurality of semi-circular grooves, and the fixing rods correspond to the semi-circular grooves one by one. The plurality of springs are respectively sleeved outside the plurality of fixing rods. One ends of the plurality of springs are fixedly connected to the inner walls of the corresponding semi-circular grooves, and the other ends of the plurality of springs are fixedly connected with sliders. The plurality of sliders are respectively slidably sleeved outside the corresponding fixing rods, and one side of the slider is fixedly connected to the inner wall of the sliding sleeve.

[0012] In some embodiments, a plurality of stirring bars are annularly distributed at the top and bottom of the movable sieve plate.

[0013] In some embodiments, a plurality of swing wires are arranged between every two adjacent movable sieve plates on the same fixed sleeve, and the plurality of swing wires on the same horizontal layer are annularly distributed.

[0014] Compared with the prior art, an extraction tower provided by the present invention realizes the purpose of relatively low mixing and contact effect by arranging a tower body, a main shaft, a reciprocating lifting member, a rotating member, a motor and a movable sieve plate group. During specific operation, the solvent liquid material is injected into the tower body through the corresponding inlet, and the motor is started. The motor drives the reciprocating lifting member to drive the main shaft to perform reciprocating lifting motion. The main shaft moves and drives the movable sieve plate group to move up and down reciprocally together, so as to oscillate and disperse the liquid material. At the same time, the bottom of the main shaft is adapted to the rotating member, and the rotating member can guide the main shaft to perform a rotating action when moving up and down, so that the main shaft and the movable sieve plate group can both rotate, and the liquid material can be stirred and dispersed in the horizontal direction. This device can not only oscillate and disperse the liquid material in the vertical direction, but also stir and disperse it in the horizontal direction. Through double and multi-stage dispersion operations, the mixing and contact effect of the solvent liquid material is improved, and the contact degree of the solvent liquid material is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of an extraction tower provided by an embodiment of the present invention; Figure 2 is Figure 1 the sectional structural diagram of; Figure 3 is Figure 2 the left view structural diagram of; Figure 4 is the internal structural diagram of an extraction tower provided by an embodiment of the present invention; Figure 5 is Figure 4 the partial sectional view schematic diagram of the sliding sleeve and the fixed sleeve in; Figure 6 is Figure 4 the partial sectional structural diagram of the reciprocating lifting member and the rotating member in.

[0016] Explanation of the reference numerals: 100, tower body; 110, upper fixed sieve plate; 120, lower fixed sieve plate; 130, toggle blade; 200, main shaft; 300, reciprocating lifting member; 310, reciprocating screw rod; 320, connecting sleeve; 400, rotating member; 410, screw shaft; 420, adapter sleeve; 500, motor; 600, moving sieve plate group; 610, fixed sleeve; 611, semicircular groove; 620, elastic member; 621, fixed rod; 622, spring; 623, slider; 630, sliding sleeve; 640, moving sieve plate; 641, stirring bar; 650, swing wire; 700, material port; 710, heavy liquid inlet; 720, heavy liquid outlet; 730, light liquid inlet; 740, light liquid outlet. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] In order to solve the technical problem of low mixing contact effect, the present invention provides an extraction tower capable of achieving better low mixing contact effect.

[0019] It should be noted that the extraction tower described in the present invention is used for but not limited to extraction processing, etc. For the convenience of explanation, in the present invention, only an extraction tower applied to extraction processing is used as an example for explanation, and the principle of an extraction tower applied to other types of equipment is essentially the same as the principle applied to extraction processing equipment, which will not be repeated here.

[0020] See also Figure 1 - Figure 6 ,in, Figure 1 1 is a schematic diagram of the structure of an extraction tower in an embodiment of the present invention, wherein the extraction tower comprises a tower body 100, a main shaft 200, a reciprocating lifting member 300, a rotating member 400, a motor 500 and a moving sieve plate group 600, wherein the main shaft 200 is rotatably arranged in the tower body 100, the main shaft 200 is coaxially arranged with the tower body 100, the reciprocating lifting member 300 is fixedly installed at the top of the main shaft 200, the reciprocating lifting member 300 is used to make the main shaft 200 perform reciprocating lifting motion, the top and bottom of the rotating member 400 are respectively fixedly connected to the main shaft 200 and the bottom inner wall of the tower body 100, the rotating member 400 is used to make the main shaft 200 rotate, the motor 500 is installed at the top of the tower body 100 and is used to drive the reciprocating lifting member 300, and a plurality of moving sieve plate groups 600 are provided, and the moving sieve plate groups 600 are evenly distributed and fixedly installed outside the main shaft 200; In this embodiment, the solvent liquid material is injected into the tower body 100 through the corresponding inlet. The motor 500 is started, and the motor 500 drives the reciprocating lifting member 300 to drive the main shaft 200 to perform a reciprocating lifting motion. The main shaft 200 moves and drives the moving sieve plate group 600 to reciprocate up and down together, oscillating and dispersing the liquid material. At the same time, the bottom of the main shaft 200 is adapted to the rotating member 400, and the rotating member 400 can guide the main shaft 200 to perform a self-rotating action during the up and down movement, so that the main shaft 200 and the moving sieve plate group 600 can both rotate, and the liquid material can be stirred and dispersed in the horizontal direction. This device can not only oscillate and disperse the liquid material in the vertical direction, but also stir and disperse it in the horizontal direction, performing double and multi-stage dispersion operations, improving the mixing and contact effect of the solvent liquid material, and ensuring the contact degree of the solvent liquid material.

[0021] In one embodiment, please refer to Figure 2 - Figure 4 and Figure 6 , an upper fixed sieve plate 110 and a lower fixed sieve plate 120 are respectively provided at the inner top and inner bottom of the tower body 100. The outer edges of the upper fixed sieve plate 110 and the lower fixed sieve plate 120 are fixedly connected to the inner wall of the tower body 100. The top of the reciprocating lifting member 300 penetrates through the top of the upper fixed sieve plate 110, and the outside of the reciprocating lifting member 300 is slidably connected to the penetration part of the upper fixed sieve plate 110. The bottom of the rotating member 400 is fixedly connected to the bottom inner wall of the tower body 100, and the top of the rotating member 400 penetrates through the top of the lower fixed sieve plate 120; In this embodiment, the upper fixed sieve plate 110 and the lower fixed sieve plate 120 can not only disperse the solvent liquid material but also stabilize the upper and lower ends of the main shaft 200 and its related components.

[0022] In one embodiment, please refer to Figure 2 - Figure 3 and Figure 6 , the reciprocating lifting member 300 includes a reciprocating lead screw 310 and a connecting sleeve 320. The reciprocating lead screw 310 is installed at the inner top of the tower body 100. The top end of the reciprocating lead screw 310 penetrates through the outside of the top of the tower body 100. The connecting sleeve 320 is threadedly sleeved on the outside of the reciprocating lead screw 310. The bottom end of the connecting sleeve 320 is rotatably connected to the top end of the main shaft 200. The connecting sleeve 320 penetrates through one side of the top of the upper fixed sieve plate 110, and the outer wall of the connecting sleeve 320 is slidably connected to the penetration part of the upper fixed sieve plate 110. The top end of the reciprocating lead screw 310 is adapted to the motor 500; Further, the rotating member 400 includes a spiral shaft 410 and a matching sleeve 420. The bottom end of the spiral shaft 410 is fixedly connected to the center of the bottom inner wall of the tower body 100. The matching sleeve 420 is threadedly sleeved on the outside of the spiral shaft 410. The top end of the matching sleeve 420 is fixedly connected to the bottom end of the main shaft 200. The matching sleeve 420 penetrates through one side of the top of the lower fixed sieve plate 120; Among them, the motor 500 is fixedly installed at the top of the tower body 100, and the top end of the reciprocating lead screw 310 is fixedly connected to one end of the output shaft of the motor 500; In this embodiment, the motor 500 is started to drive the reciprocating lead screw 310 to rotate. The reciprocating lead screw 310 is in threaded fit with the connecting sleeve 320, and the connecting sleeve 320 can reciprocate up and down under the restriction of the upper fixed sieve plate 110; At the same time, when the connecting sleeve 320 drives the main shaft 200 to reciprocate up and down, the bottom end of the main shaft 200 moves outside the spiral shaft 410 through the adaptor sleeve 420, and the movement track of the adaptor sleeve 420 is the same as the spiral of the spiral shaft 410, so as to realize the self-rotation of the main shaft 200.

[0023] In one embodiment, please refer to Figure 2 - Figure 3 and Figure 6 , on the sides of the upper fixed sieve plate 110 and the lower fixed sieve plate 120 facing away from each other, there are provided stirring blades 130. The two stirring blades 130 are respectively fixedly sleeved outside the connecting sleeve 320 and the adaptor sleeve 420; In this embodiment, the stirring blades 130 can improve the stirring and dispersion degree at the top and bottom of the tower body 100.

[0024] In one embodiment, please refer to Figure 2 - Figure 6 , the movable sieve plate group 600 includes a fixed sleeve 610, a plurality of elastic members 620, a sliding sleeve 630 and a plurality of movable sieve plates 640. The fixed sleeve 610 is fixedly sleeved outside the main shaft 200. A plurality of semi-circular grooves 611 are formed on the outer sides of the top end and the bottom end of the fixed sleeve 610. A plurality of elastic members 620 are respectively arranged in the plurality of semi-circular grooves 611. The sliding sleeve 630 is slidably sleeved outside the fixed sleeve 610. One sides of the plurality of elastic members 620 are fixedly connected to the inner wall of the sliding sleeve 630. The plurality of movable sieve plates 640 are evenly sleeved outside the sliding sleeve 630; In this embodiment, when the main shaft 200 moves up and down, it drives the fixed sleeve 610 to reciprocate up and down. The fixed sleeve 610 is connected to the sliding sleeve 630 through the elastic members 620. The plurality of movable sieve plates 640 are installed outside the sliding sleeve 630. Through the elastic members 620, the movable sieve plates 640 always have freedom in the vertical direction and are always in a shaking state.

[0025] In one embodiment, please refer to Figure 5, wherein, the elastic member 620 includes a plurality of fixing rods 621 and a plurality of springs 622. The plurality of fixing rods 621 are respectively fixedly arranged in a plurality of semi-circular grooves 611, and the fixing rods 621 correspond to the semi-circular grooves 611 one by one. The plurality of springs 622 are respectively sleeved outside the plurality of fixing rods 621. One ends of the plurality of springs 622 are fixedly connected to the inner walls of the corresponding semi-circular grooves 611, and the other ends of the plurality of springs 622 are fixedly connected with sliders 623. The plurality of sliders 623 are respectively slidably sleeved outside the corresponding fixing rods 621. One side of the slider 623 is fixedly connected to the inner wall of the sliding sleeve 630; In this embodiment, the sliding sleeve 630 is slidably connected to the outside of the fixing rod 621 through the slider 623. When the sliding sleeve 630 moves up and down, it can squeeze the spring 622.

[0026] In one embodiment, please refer to Figure 2 and Figure 4 , a plurality of stirring bars 641 are annularly distributed on the top and bottom of the movable sieve plate 640; In this embodiment, the stirring bars 641 can improve the horizontal stirring effect of the movable sieve plate 640.

[0027] In one embodiment, please refer to Figure 2 - Figure 4 , a plurality of swing wires 650 are arranged between every two adjacent movable sieve plates 640 on the same fixed sleeve 610, and the plurality of swing wires 650 in the same horizontal layer are annularly distributed; In this embodiment, the swing wire 650 has elasticity. When the main shaft 200 rotates and moves up and down, the swing wire 650 can randomly disturb the solvent liquid material to maintain the dispersion degree.

[0028] In one embodiment, please refer to Figure 1 and Figure 2 , a material port 700 is arranged outside the tower body 100. The material port 700 includes a heavy liquid inlet 710 (see the heavy liquid inlet 710 in Figure 2 , the same below, not described in detail), a heavy liquid outlet 720 (see the heavy liquid outlet 720 in Figure 2 , the same below, not described in detail), a light liquid inlet 730 (see the light liquid inlet 730 in Figure 2 , the same below, not described in detail), and a light liquid outlet 740 (see the light liquid outlet 740 in Figure 2 , the same below, not described in detail).

[0029] In one embodiment, please refer to Figure 1 , the diameter dimensions of the top and bottom of the tower body 100 are both larger than the diameter dimension of the middle part of the tower body 100, so as to reduce the flow rate of the liquid material flowing through the top and bottom of the tower body 100 and ensure the mixing effect.

[0030] To better understand the present invention, the following is a detailed description of the technical solution of the present invention in conjunction with Figures 1 to 6 Inject the solvent liquid material into the tower body 100 through the corresponding material port 700. Start the motor 500, and the motor 500 drives the reciprocating lead screw 310 to rotate. The reciprocating lead screw 310 is threadedly adapted to the connecting sleeve 320. The connecting sleeve 320 can perform reciprocating lifting under the restriction of the upper fixed sieve plate 110 to oscillate and disperse the liquid material in the vertical direction. At the same time, when the connecting sleeve 320 drives the main shaft 200 to perform reciprocating lifting, the bottom end of the main shaft 200 moves outside the spiral shaft 410 through the adapter sleeve 420. The moving track of the adapter sleeve 420 is consistent with the spiral of the spiral shaft 410, so as to realize the self-rotation of the main shaft 200 and stir and disperse the liquid material in the horizontal direction. Furthermore, when the main shaft 200 moves up and down, it drives the fixed sleeve 610 to perform reciprocating lifting. The fixed sleeve 610 is connected to the sliding sleeve 630 through the elastic member 620. A plurality of moving sieve plates 640 are installed outside the sliding sleeve 630. Through the elastic member 620, the moving sieve plates 640 always have freedom in the vertical direction and are always in a shaking state. This device can not only oscillate and disperse the liquid material in the vertical direction, but also stir and disperse it in the horizontal direction, with double multi-stage dispersion operations, improving the mixing and contact effect of the solvent liquid material and ensuring the contact degree of the solvent liquid material.

[0031] The above specific embodiments of the present invention do not constitute a limitation to the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An extraction column, characterized in that, Comprising: Tower body; Main shaft, the main shaft is rotatably arranged in the tower body, and the main shaft is coaxially arranged with the tower body; Reciprocating lifting member, the reciprocating lifting member is fixedly installed at the top of the main shaft, and the reciprocating lifting member is used to make the main shaft perform reciprocating lifting motion; Rotating member, the top and bottom of the rotating member are respectively fixedly connected to the main shaft and the bottom inner wall of the tower body, and the rotating member is used to make the main shaft rotate; Motor, the motor is installed at the top of the tower body and is used to drive the reciprocating lifting member; And Moving sieve plate group, there are several moving sieve plate groups, and the moving sieve plate groups are evenly distributed outside the main shaft.

2. The extraction column according to claim 1, wherein, An upper fixed sieve plate and a lower fixed sieve plate are respectively arranged at the inner top and inner bottom of the tower body, the outer edges of the upper fixed sieve plate and the lower fixed sieve plate are fixedly connected to the inner wall of the tower body, the top of the reciprocating lifting member penetrates to the top of the upper fixed sieve plate, and the outside of the reciprocating lifting member is slidably connected to the penetration part of the upper fixed sieve plate, the bottom of the rotating member is fixedly connected to the bottom inner wall of the tower body, and the top of the rotating member penetrates to the top of the lower fixed sieve plate.

3. An extraction column according to claim 2, characterized in that, The reciprocating lifting member includes a reciprocating lead screw and a connecting sleeve, the reciprocating lead screw is installed at the inner top of the tower body, the top end of the reciprocating lead screw penetrates to the outside of the top of the tower body, the connecting sleeve is threadedly sleeved outside the reciprocating lead screw, the bottom end of the connecting sleeve is rotatably connected to the top end of the main shaft, the connecting sleeve penetrates to one side of the top of the upper fixed sieve plate, and the outer wall of the connecting sleeve is slidably connected to the penetration part of the upper fixed sieve plate, and the top end of the reciprocating lead screw is adapted to the motor.

4. An extraction column according to claim 3, wherein The rotating member includes a spiral shaft and a matching sleeve, the bottom end of the spiral shaft is fixedly connected to the center of the bottom inner wall of the tower body, the matching sleeve is threadedly sleeved outside the spiral shaft, the top end of the matching sleeve is fixedly connected to the bottom end of the main shaft, and the matching sleeve penetrates to one side of the top of the lower fixed sieve plate.

5. An extraction column according to claim 3, characterized in that, The motor is fixedly installed at the top of the tower body, and the top end of the reciprocating lead screw is fixedly connected to one end of the output shaft of the motor.

6. An extraction column according to claim 4, characterized in that, On one side of the upper fixed sieve plate and the lower fixed sieve plate facing away from each other, there are stirring blades, and the two stirring blades are respectively fixedly sleeved outside the connecting sleeve and the matching sleeve.

7. An extraction column according to claim 1, characterized in that, The moving sieve plate group includes a fixed sleeve, several elastic members, a sliding sleeve and several moving sieve plates, the fixed sleeve is fixedly sleeved outside the main shaft, several semi-circular grooves are respectively opened on the outer sides of the top end and the bottom end of the fixed sleeve, several elastic members are respectively arranged in several semi-circular grooves, the sliding sleeve is slidably sleeved outside the fixed sleeve, one side of several elastic members is fixedly connected to the inner wall of the sliding sleeve, and several moving sieve plates are evenly sleeved outside the sliding sleeve.

8. An extraction column according to claim 7, wherein, The elastic member includes a plurality of fixing rods and a plurality of springs. The plurality of fixing rods are respectively fixedly arranged in the plurality of semi-circular grooves, and the fixing rods correspond to the semi-circular grooves one by one. The plurality of springs are respectively sleeved outside the plurality of fixing rods. One ends of the plurality of springs are fixedly connected to the inner walls of the corresponding semi-circular grooves, and the other ends of the plurality of springs are fixedly connected with sliders. The plurality of sliders are respectively slidably sleeved outside the corresponding fixing rods, and one side of the slider is fixedly connected to the inner wall of the sliding sleeve.

9. An extraction column according to claim 7, characterized in that, A plurality of stirring bars are annularly distributed at the top and bottom of the moving sieve plate.

10. An extraction column according to claim 7, characterized in that, A plurality of swinging wires are arranged between every two adjacent moving sieve plates on the same fixing sleeve, and the plurality of swinging wires at the same horizontal layer are annularly distributed.

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