Membrane treatment device for florfenicol mother liquor and treatment method thereof

Abstract

The invention discloses a florfenicol mother liquor membrane treatment device which comprises a cylinder and a core tube, cylinder covers are hermetically mounted at two ends of the cylinder, the core tube is mounted in the center of the interior of the cylinder, a circle of separation layer sleeves the outer side of the core tube, a circle of inner wall layer sleeves the outer side of the separation layer, and a first liquid cavity is formed between the separation layer and the inner wall layer; a second liquid cavity is formed between the separation layer and the core pipe, one barrel cover is connected with a first pipe opening and a second pipe opening, the first pipe opening is communicated with the first liquid cavity, florfenicol mother liquor enters the first liquid cavity from the first pipe opening, the separation layer is made of a nanofiltration membrane material, and the separation layer can achieve the component separation effect of the florfenicol mother liquor; the core tube is communicated with the second liquid cavity, the second tube opening is communicated with the core tube, the second tube opening can output separated penetrating liquid, the separation layer of the device is made of nanofiltration membrane materials, the separation layer can prevent florfenicol components with large molecular weight from passing through, and florfenicol concentrated liquid can be effectively separated from mother liquid through the effect.

Description

Technical Field

[0001] The present invention relates to the technical field of pharmaceutical waste liquid recovery and treatment equipment, and more specifically, to a membrane treatment device for florfenicol mother liquid and a treatment method thereof. Background Art

[0002] Florfenicol is a synthetic chloramphenicol-based broad-spectrum antibacterial drug for veterinary use. A large amount of florfenicol centrifuge mother liquor is produced during the preparation and production process of florfenicol products. Although florfenicol centrifuge mother liquor is a production waste liquid, it still contains a large amount of florfenicol centrifuge components. If it is directly introduced into the wastewater treatment system, it will not only cause a waste of florfenicol components, but also increase the burden of wastewater biochemical treatment. Therefore, how to effectively utilize florfenicol centrifuge mother liquor is the research focus of pharmaceutical companies, and this case is born from this. Summary of the invention

[0003] The object of the present invention is to solve the needs of the above-mentioned prior art and provide a membrane treatment device for florfenicol mother liquor and a treatment method thereof. The separation layer of the device is made of nanofiltration membrane material, and the separation layer can block the passage of florfenicol components with larger molecular weight. Through this effect, florfenicol concentrate can be effectively separated from the mother liquor.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A membrane treatment device for florfenicol mother liquor comprises a cylinder body and a core tube, wherein cylinder covers are sealedly installed at both ends of the cylinder body, the core tube is installed at the central position inside the cylinder body, the core tube is connected to the cylinder covers at both ends of the cylinder body, a circle of separation layer is sleeved on the outer side of the core tube, a circle of inner wall layer is sleeved on the outer side of the separation layer, a first liquid cavity is formed between the separation layer and the inner wall layer, a second liquid cavity is formed between the separation layer and the core tube, one of the cylinder covers is connected with a first pipe opening and a second pipe opening, the first pipe opening is connected to the first liquid cavity, the florfenicol mother liquor enters the first liquid cavity through the first pipe opening, the separation layer is made of nanofiltration membrane material, the separation layer can form a component separation effect of the florfenicol mother liquor, the core tube is connected to the second liquid cavity, the second pipe opening is connected to the core tube, and the second pipe opening can output the separated dialysis liquid.

[0006] Furthermore, a first tee is connected and installed on the first pipe opening, a mother liquid pipe joint and a retained liquid pipe joint are installed on the first tee, and the mother liquid pipe joint and the retained liquid pipe joint are not opened at the same time; a second tee is connected and installed on the second pipe opening, a dialysis liquid pipe joint and a backwash water pipe joint are installed on the second tee, and the dialysis liquid pipe joint and the backwash water pipe joint are not opened at the same time; a plurality of flow holes are opened on the side wall of the core tube, and the second liquid cavity is connected with the inside of the core tube through the flow holes.

[0007] Furthermore, the mother liquid pipe joint and the dialysis liquid pipe joint are opened in pairs at the same time, and the retained liquid pipe joint and the backwash water pipe joint are opened in pairs at the same time.

[0008] Furthermore, the cylinder is equipped with a filtrate auxiliary mechanism, which includes a plurality of extrusion groups, which are evenly distributed along the length direction of the cylinder, and each of the extrusion groups includes two symmetrically installed elastic extrusion elements. A rotating sleeve is mounted on the outer rotating sleeve of the cylinder, and the inner wall layer is made of an elastic flexible material. During the rotation of the rotating sleeve, the elastic extrusion elements can be driven to extrude the inner wall layer.

[0009] Furthermore, a plurality of driving seats are installed on the inner hole wall of the rotating sleeve, and the driving seats and the extrusion groups are arranged in a one-to-one correspondence.

[0010] Furthermore, the elastic extrusion element includes a moving rod, a box body and a spring. The box body is fixedly connected to the inner wall of the cylinder, the moving rod is installed through the box body, the moving rod is connected to a piston, the piston is matched and installed in the box body, the spring is installed in the box body, one end of the spring is connected to the piston, and the other end is connected to the bottom of the box body hole, the end of the moving rod facing the inner wall layer is connected to an extrusion plate, and the other end of the moving rod extends to contact the inner wall of the driving seat.

[0011] Furthermore, the inner wall of the driving seat is undulating in a wave shape, and is provided with convex points and concave points. The convex points can form a squeezing effect of the extrusion group on the inner wall layer, and the concave points can release the squeezing effect of the extrusion group on the inner wall layer.

[0012] Furthermore, the filtrate auxiliary mechanism also includes a rotating power component, and the rotating power component is transmission-connected to the rotating sleeve.

[0013] Furthermore, the rotating power assembly includes a motor and a driving gear, the driving gear is connected to the output end of the motor, the outer wall of the rotating sleeve is fixedly connected to a transmission gear ring, and the driving gear is meshed with the transmission gear ring.

[0014] A membrane treatment method for a florfenicol mother solution is implemented using a membrane treatment device for a florfenicol mother solution, comprising the following steps:

[0015] (a), opening the mother liquid pipe joint and the dialysis liquid pipe joint, closing the retentate liquid pipe joint and the backwash water pipe joint, and continuously inputting the florfenicol mother liquid into the first liquid cavity through the first pipe opening;

[0016] (b) The florfenicol mother liquor is separated into components through the separation layer, and the organic matter with a molecular weight less than passes through the separation layer into the second liquid cavity, flows into the core tube and is output from the second pipe port. The molecular weight of the florfenicol component is, which is separated and continues to remain in the first liquid cavity;

[0017] (c) turning on the filtrate auxiliary mechanism so that the extrusion group forms a rhythmic extrusion effect on the inner wall layer to promote the separation operation;

[0018] (d) After a batch of florfenicol mother liquor is processed, the mother liquor pipe joint and the dialysis liquid pipe joint are closed, and the retentate liquid pipe joint and the backwash water pipe joint are opened. The florfenicol concentrate retained in the first liquid chamber is discharged from the retentate liquid pipe joint, and backwash water is introduced into the backwash water pipe joint to backwash the separation layer on the side of the first liquid chamber, and the residual florfenicol on the separation layer is removed.

[0019] The beneficial effects of the present invention are:

[0020] 1. The separation layer of the present invention is made of nanofiltration membrane material, and the separation layer can block the passage of florfenicol components with larger molecular weight, and through this effect, the florfenicol concentrate can be effectively separated from the mother liquor.

[0021] 2. The present invention is designed with a filtrate auxiliary mechanism, which can form a rhythmic squeezing effect and effectively promote the filtering operation of the mother liquor.

[0022] 3. The separation layer of the present invention can be backwashed and cleaned, which can not only effectively collect the blocked florfenicol components, but also extend the service life of the separation layer, thereby achieving a non-disassembly self-cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional structural diagram of a membrane treatment device for a florfenicol mother solution in this embodiment;

[0024] Figure 2 It is a cross-sectional structural diagram of a membrane treatment device for florfenicol mother solution in this embodiment at the cylinder position;

[0025] Figure 3 for Figure 2 A magnified view of the position in the figure;

[0026] Figure 4 It is a cross-sectional structural diagram of the rotating sleeve in this embodiment.

[0027] Figure numerals: cylinder body 1, cylinder cover 2, first pipe opening 21, second pipe opening 22, first tee 23, mother liquid pipe joint 231, retained liquid pipe joint 232, second tee 24, dialysis liquid pipe joint 241, backwash water pipe joint 242, core tube 3, flow hole 31, separation layer 4, inner wall layer 5, first liquid chamber 6, second liquid chamber 7, filtrate auxiliary mechanism 8, extrusion group 81, elastic extrusion element 82, moving rod 821, extrusion plate 822, box body 823, piston 824, spring 825, rotating sleeve 83, driving seat 831, convex point 832, concave point 833, transmission gear ring 834, rotating power component 84, motor 841, driving gear 842. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figure 1-Figure 4The membrane treatment device of a florfenicol mother liquor shown in the figure comprises a cylinder 1 and a core tube 3, cylinder covers 2 are sealed and installed at both ends of the cylinder 1, the core tube 3 is installed in the central position inside the cylinder 1, the core tube 3 is connected to the cylinder covers 2 at both ends of the cylinder 1, a circle of separation layer 4 is sleeved on the outside of the core tube 3, a circle of inner wall layer 5 is sleeved on the outside of the separation layer 4, both ends of the separation layer 4 and the inner wall layer 5 are closed, the core tube 3 is at the innermost part, the separation layer 4 is sleeved on the outside of the core tube 3, the inner wall layer 5 is sleeved on the outside of the separation layer 4, a first liquid cavity 6 is formed between the separation layer 4 and the inner wall layer 5, a second liquid cavity 7 is formed between the separation layer 4 and the core tube 3, a first pipe opening 21 and a second pipe opening 22 are connected to one of the cylinder covers 2, the first pipe opening 21 is connected to the first liquid cavity 6, the first pipe opening 21 is used to input the florfenicol mother liquor to be treated, the florfenicol mother liquor enters the first liquid cavity 6 from the first pipe opening 21, the separation layer 4 is made of nanofiltration membrane material, the nanofiltration membrane material The organic matter with a relative molecular weight greater than 200 can be intercepted. In the florfenicol mother liquor, the molecular weight of the florfenicol component is 358, so the separation layer 4 can form a component separation effect of the florfenicol mother liquor, the florfenicol component is blocked in the first liquid chamber 6, and the part with a molecular weight less than 200 passes through the separation layer 4 to enter the second liquid chamber 7, which is an ethanol solution. The core tube 3 is connected to the second liquid chamber 7, and the second pipe port 22 is connected to the core tube 3. The second pipe port 22 can output the separated dialysis liquid (ethanol solution). As the treatment operation proceeds, more and more florfenicol is contained in the first liquid chamber 6 to form a florfenicol concentrated solution, which can be subsequently output through the first pipe port 21 for recovery. The present invention well solves the treatment problem of the florfenicol mother liquor, realizes the recycling of waste products, can effectively improve the product yield, reduce the production cost of the drug, and can also reduce the burden of subsequent waste liquid biochemical treatment.

[0030] like Figure 1 and Figure 2As shown, a first tee 23 is connected and installed on the first pipe opening 21, and a mother liquid pipe joint 231 and a retained liquid pipe joint 232 are installed on the first tee 23. A second tee 24 is connected and installed on the second pipe opening 22, and a dialysis liquid pipe joint 241 and a backwash water pipe joint 242 are installed on the second tee 24. In order to prevent pipe cross-talk, the mother liquid pipe joint 231 and the retained liquid pipe joint 232 are set to be opened at different times, and the dialysis liquid pipe joint 241 and the backwash water pipe joint 242 are set to be opened at different times. A plurality of flow holes 31 are opened on the side wall of the core tube 3, and the second liquid cavity 7 is connected with the inside of the core tube 3 through the flow holes 31. The dialysis liquid can enter the core tube 3 from the second liquid cavity 7 and be continuously discharged outward. During the use of the invention, the mother liquid pipe joint 231 and the dialysis liquid pipe joint 241 are paired and opened at the same time, and the retained liquid pipe joint 232 and the backwash water pipe joint 242 are closed. The processing operation of florfenicol mother liquor can be carried out at the same time. The florfenicol mother liquor is input into the first liquid chamber 6 through the mother liquor pipe joint 231, and the dialysis liquid is output through the dialysis liquid pipe joint 241. After a batch of florfenicol mother liquor is processed, the retentate liquid pipe joint 232 and the backwashing water pipe joint 242 are paired and opened at the same time. At this time, the mother liquor pipe joint 231 and the dialysis liquid pipe joint 241 are closed, and the florfenicol concentrated liquid in the first liquid chamber 6 is output through the retentate liquid pipe joint 232. The backwashing water pipe joint 242 is connected to introduce clean water, and the separation layer 4 is backwashed to separate the residual florfenicol component on the separation layer 4. The clean water only contains the florfenicol component and can be mixed with the florfenicol concentrated liquid for processing. Under the above structural design, the separation layer 4 of the present invention can not only meet the separation and collection requirements of the florfenicol components, but also can achieve cleaning without disassembly, and the device has a long service life.

[0031] Relying entirely on the autonomous penetration of florfenicol mother solution is inefficient. Based on the high-efficiency operation requirements of industrial production, such as Figure 1 and Figure 2 As shown, the present invention is provided with a filtrate auxiliary mechanism 8 on the cylinder 1, and the filtrate auxiliary mechanism 8 includes a plurality of extrusion groups 81, and the plurality of extrusion groups 81 are evenly distributed along the length direction of the cylinder 1, and each extrusion group 81 includes two symmetrically installed elastic extrusion elements 82, and a rotating sleeve 83 is provided on the outer rotating sleeve of the cylinder 1, and the inner wall layer 5 is made of an elastic flexible material. During the rotation of the rotating sleeve 83, the elastic extrusion element 82 can be driven to extrude the inner wall layer 5, and as the inner wall layer 5 is extruded, its effect is transmitted to the first liquid chamber 6, which will accelerate the flow of the florfenicol mother liquor in the first liquid chamber 6 and form a pressurization effect, which can promote the separation efficiency of the florfenicol mother liquor, so that the treatment efficiency of the florfenicol mother liquor is significantly improved.

[0032] like Figure 4 As shown, the inner hole wall of the rotating sleeve 83 is equipped with a plurality of driving seats 831, such as Figure 2As shown, the drive seat 831 and the extrusion group 81 are arranged in a one-to-one correspondence, so that in the present invention, all the extrusion groups 81 can extrude synchronously, such as Figure 4 As shown, the inner wall of the driving seat 831 is undulating in a wave shape, and the inner wall of the driving seat 831 is provided with convex points 832 and concave points 833, and the convex points 832 and concave points 833 are arranged alternately. The convex points 832 can form an extrusion effect of the extrusion group 81 on the inner wall layer 5, and the concave points 833 can release the extrusion effect of the extrusion group 81 on the inner wall layer 5. In this way, as the rotating sleeve 83 rotates, all the extrusion groups 81 can form a rhythmic extrusion effect.

[0033] like Figure 3 As shown, the elastic extrusion element 82 includes a moving rod 821, a box body 823 and a spring 825. The box body 823 is fixedly connected to the inner wall of the cylinder 1. The moving rod 821 is installed through the box body 823. The moving rod 821 is connected with a piston 824. The piston 824 is matched and installed in the box body 823. The spring 825 is installed in the box body 823. One end of the spring 825 is connected to the piston 824, and the other end is connected to the bottom of the box body 823. The piston 824 plays a role in guiding the movement of the moving rod 821, and the spring 825 plays a role in restoring the moving rod 821. The end of the moving rod 821 facing the inner wall layer 5 is connected with an extrusion plate 822. The other end extends to contact the inner wall of the driving seat 831. As the rotating sleeve 83 rotates, the convex point 832 contacts the moving rod 821, which will push the moving rod 821 to move toward the inner wall layer 5. The extrusion plate 822 matches the shape of the inner wall layer 5. The extrusion plate 822 will form an extrusion deformation effect on the flexible inner wall layer 5. As the rotating sleeve 83 continues to rotate, the concave point 833 will contact the moving rod 821. Under the action of the spring 825, the moving rod 821 will form a reset movement. The extrusion plate 822 no longer squeezes the inner wall layer 5, and the inner wall layer 5 automatically recovers. As the rotating sleeve 83 rotates, the elastic extrusion element 82 can form a rhythmic extrusion effect.

[0034] like Figure 1 As shown, the filtrate auxiliary mechanism 8 also includes a rotating power component 84, which is in transmission connection with the rotating sleeve 83. The rotating power component 84 can drive the rotating sleeve 83 to rotate at a uniform speed, and the rotating power component 84 includes a motor 841 and a driving gear 842. The driving gear 842 is connected to the output end of the motor 841. The outer wall of the rotating sleeve 83 is fixedly connected with a transmission ring gear 834. The driving gear 842 is meshed with the transmission ring gear 834. When the motor 841 is started, the driving gear 842 can be driven to rotate, and then the rotating sleeve 83 is driven to rotate at a uniform speed through the meshing relationship to meet the demand of driving the extrusion group 81.

[0035] A membrane treatment method for a florfenicol mother solution is implemented using a membrane treatment device for a florfenicol mother solution, comprising the following steps:

[0036] (a), opening the mother liquid pipe joint 231 and the dialysis liquid pipe joint 241, closing the retentate liquid pipe joint 232 and the backwash water pipe joint (242), and the florfenicol mother liquid is transported by the pipeline and continuously input into the first liquid chamber 6 through the first pipe opening 21;

[0037] (b) The separation layer 4 forms a permeability effect. The florfenicol mother solution passes through the separation layer 4 to complete the component separation. The organic matter with a molecular weight less than 200 passes through the separation layer 4 into the second liquid chamber 7, flows into the core tube 3 and is output from the second pipe port 22. The molecular weight of the florfenicol component is 358, which is separated and continues to remain in the first liquid chamber 6;

[0038] (c) opening the filtrate auxiliary mechanism 8, so that the extrusion group 81 forms a rhythmic extrusion effect on the inner wall layer 5 to promote the separation operation. With the continuous treatment of the florfenicol mother liquor, the content of the florfenicol component in the first liquid chamber 6 is significantly increased, and a florfenicol concentrate is formed in the first liquid chamber 6;

[0039] (d) After a batch of florfenicol mother liquor is processed, the mother liquor pipe joint 231 and the dialysis liquid pipe joint 241 are closed, and the retained liquid pipe joint 232 and the backwash water pipe joint 242 are opened. The florfenicol concentrated solution retained in the first liquid chamber 6 is output from the retained liquid pipe joint 232, and backwash water is introduced into the backwash water pipe joint 242 to backwash the separation layer 4 on the side of the first liquid chamber 6. The residual florfenicol on the separation layer 4 is removed, and the backwash water contains only the florfenicol component, which can be combined with the florfenicol concentrated solution for subsequent processing.

[0040] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A membrane treatment device for florfenicol mother liquor, characterized in that: The invention comprises a cylinder (1) and a core tube (3), wherein cylinder covers (2) are sealedly installed at both ends of the cylinder (1), the core tube (3) is installed at the central position inside the cylinder (1), the core tube (3) is connected to the cylinder covers (2) at both ends of the cylinder (1), a separation layer (4) is sleeved on the outer side of the core tube (3), an inner wall layer (5) is sleeved on the outer side of the separation layer (4), a first liquid cavity (6) is formed between the separation layer (4) and the inner wall layer (5), and a second liquid cavity (7) is formed between the separation layer (4) and the core tube (3), wherein A first pipe opening (21) and a second pipe opening (22) are connected to one of the barrel covers (2); the first pipe opening (21) is connected to the first liquid chamber (6); the florfenicol mother liquid enters the first liquid chamber (6) through the first pipe opening (21); the separation layer (4) is made of nanofiltration membrane material; the separation layer (4) can form a component separation effect of the florfenicol mother liquid; the core tube (3) is connected to the second liquid chamber (7); the second pipe opening (22) is connected to the core tube (3); and the second pipe opening (22) can output the separated dialysis liquid.

2. A membrane treatment device for florfenicol mother solution according to claim 1, characterized in that: The first pipe opening (21) is connected to and installed with a first tee (23), on which a mother liquid pipe joint (231) and a retained liquid pipe joint (232) are installed, and the mother liquid pipe joint (231) and the retained liquid pipe joint (232) are not opened at the same time; the second pipe opening (22) is connected to and installed with a second tee (24), on which a dialysis liquid pipe joint (241) and a backwash water pipe joint (242) are installed, and the dialysis liquid pipe joint (241) and the backwash water pipe joint (242) are not opened at the same time; a plurality of flow holes (31) are opened on the side wall of the core tube (3), and the second liquid chamber (7) is connected to the interior of the core tube (3) through the flow holes (31).

3. A membrane treatment device for florfenicol mother solution according to claim 2, characterized in that: The mother liquid pipe joint (231) and the dialysis liquid pipe joint (241) are paired and opened at the same time, and the retained liquid pipe joint (232) and the backwash water pipe joint (242) are paired and opened at the same time.

4. A membrane treatment device for florfenicol mother solution according to claim 1, characterized in that: The cylinder (1) is provided with a filtrate auxiliary mechanism (8), the filtrate auxiliary mechanism (8) comprising a plurality of extrusion groups (81), the plurality of extrusion groups (81) being evenly distributed along the length direction of the cylinder (1), each of the extrusion groups (81) comprising two symmetrically mounted elastic extrusion elements (82), the cylinder (1) being externally rotatably sleeved with a rotating sleeve (83), the inner wall layer (5) being made of an elastic flexible material, and the rotating sleeve (83) being able to drive the elastic extrusion elements (82) to extrude the inner wall layer (5) during its rotation.

5. A membrane treatment device for florfenicol mother solution according to claim 4, characterized in that: A plurality of drive seats (831) are installed on the inner hole wall of the rotating sleeve (83), and the drive seats (831) and the extrusion groups (81) are arranged in a one-to-one correspondence.

6. A membrane treatment device for florfenicol mother solution according to claim 5, characterized in that: The elastic extrusion element (82) comprises a moving rod (821), a box body (823) and a spring (825); the box body (823) is fixedly connected to the inner wall of the cylinder (1); the moving rod (821) is installed through the box body (823); the moving rod (821) is connected to a piston (824); the piston (824) is matched and installed in the box body (823); the spring (825) is installed in the box body (823); one end of the spring (825) is connected to the piston (824), and the other end is connected to the bottom of the hole of the box body (823); the end of the moving rod (821) facing the inner wall layer (5) is connected to the extrusion plate (822); the other end of the moving rod (821) extends to contact the inner wall of the driving seat (831).

7. A membrane treatment device for florfenicol mother solution according to claim 5, characterized in that: The inner wall of the drive seat (831) is undulating in a wave shape, and is provided with convex points (832) and concave points (833). The convex points (832) can form an extrusion effect of the extrusion group (81) on the inner wall layer (5), and the concave points (833) can release the extrusion effect of the extrusion group (81) on the inner wall layer (5).

8. A membrane treatment device for florfenicol mother solution according to claim 4, characterized in that: The filtrate auxiliary mechanism (8) further comprises a rotating power assembly (84), and the rotating power assembly (84) is in transmission connection with the rotating sleeve (83).

9. A membrane treatment device for florfenicol mother solution according to claim 8, characterized in that: The rotating power assembly (84) comprises a motor (841) and a driving gear (842), wherein the driving gear (842) is connected to the output end of the motor (841), and a transmission ring gear (834) is fixedly connected to the outer wall of the rotating sleeve (83), and the driving gear (842) is meshed with the transmission ring gear (834).

10. A membrane treatment method for florfenicol mother solution, which is implemented by using a membrane treatment device for florfenicol mother solution according to any one of claims 1 to 9, characterized in that: The steps include: (a), opening the mother liquid pipe joint (231) and the dialysis liquid pipe joint (241), closing the retentate liquid pipe joint (232) and the backwash water pipe joint (242), and continuously inputting the florfenicol mother liquid into the first liquid chamber (6) through the first pipe opening (21); (b) The florfenicol mother liquor passes through the separation layer (4) to complete component separation. Organic matter with a molecular weight less than 200 passes through the separation layer (4) into the second liquid chamber (7), flows into the core tube (3) and is output from the second pipe port (22). The molecular weight of the florfenicol component is 358, which is separated and continues to remain in the first liquid chamber (6); (c) turning on the filtrate auxiliary mechanism (8) so that the extrusion group (81) forms a rhythmic extrusion effect on the inner wall layer (5) to promote the separation operation; (d) After a batch of florfenicol mother liquor is processed, the mother liquor pipe joint (231) and the dialysis liquid pipe joint (241) are closed, and the retained liquid pipe joint (232) and the backwash water pipe joint (242) are opened, and the florfenicol concentrated liquid retained in the first liquid chamber (6) is discharged from the retained liquid pipe joint (232), and backwash water is introduced into the backwash water pipe joint (242) to backwash and clean the surface of the separation layer (4) on the side of the first liquid chamber (6), and the residual florfenicol on the separation layer (4) is removed.

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