Membrane filtration device for separating and purifying insect repellent intermediate

Abstract

The utility model provides a membrane filtration device for separating and purifying insect repellent intermediates, which comprises a barrel, detachable end covers are mounted at two ends of the barrel, water outlets are mounted on the outer surfaces of the end covers, a water inlet is mounted in the middle of the upper portion of the outer surface of the barrel, a nano-filtration membrane core is mounted in the barrel, and the nano-filtration membrane core is mounted in the barrel. The two ends of the nano-filtration membrane core make contact with the two end covers respectively, a housing is installed on the side, close to the water inlet, of the inner surface of the barrel, a plurality of annular pipes are evenly installed on the face, away from the water inlet, of the housing, and a space formed by the housing and the barrel is communicated with the annular pipes. The annular pipe is arranged on the nano-filtration membrane core in a sleeving manner, the annular pipe and the nano-filtration membrane core are concentrically arranged, and a plurality of branch pipe heads facing the nano-filtration membrane core are uniformly mounted on the outer surface of the annular pipe. The area, close to the water inlet, of the nano-filtration membrane core is prevented from being excessively impacted.

Description

Technical Field

[0001] This invention relates to a membrane filtration device for separating and purifying intermediates of anthelmintic drugs, belonging to the field of anthelmintic drug intermediate production. Background Technology

[0002] Anthelmintic drug intermediates are key raw materials used in the synthesis of antiparasitic drugs. These intermediates are prepared through chemical synthesis and are ultimately used to produce various anthelmintics. Filtering solutions using nanofiltration membranes is one of the common methods for separating and purifying anthelmintic drug intermediates. A nanofiltration membrane consists of a nanofiltration membrane core installed inside a cylinder, which has an inlet and an outlet. Because the connection range between the inlet and the cylinder is small, when the solution enters the cylinder through the inlet under the drive of the pump, the solution impacts a small area of ​​the nanofiltration membrane core with a large impact force. That is, the area of ​​the nanofiltration membrane core near the inlet receives a large impact load from the solution, making the area of ​​the nanofiltration membrane core near the inlet easily damaged. Therefore, it is necessary to design a membrane filtration device for separating and purifying anthelmintic drug intermediates so that the solution is evenly dispersed around the nanofiltration membrane core. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a membrane filtration device for separating and purifying intermediates of anthelmintic drugs, thereby solving the problems mentioned in the background art. This invention ensures that the solution is uniformly dispersed around the nanofiltration membrane core, preventing excessive impact on the area of ​​the nanofiltration membrane core near the water inlet.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a membrane filtration device for separating and purifying intermediates of anthelmintic drugs, comprising a cylindrical body, both ends of which are equipped with detachable end caps, an outlet is installed on the outer surface of the end caps, an inlet is installed at the middle position of the upper part of the outer surface of the cylindrical body, a nanofiltration membrane core is installed inside the cylindrical body, the two ends of the nanofiltration membrane core are in contact with the two end caps respectively, a cover is installed on the inner surface of the cylindrical body near the inlet, a plurality of annular tubes are evenly installed on the side of the cover away from the inlet, the space formed by the cover and the cylindrical body is in communication with the annular tubes, the annular tubes are sleeved on the nanofiltration membrane core and the annular tubes are concentrically arranged with the nanofiltration membrane core, and a plurality of branch pipe heads facing the nanofiltration membrane core are evenly installed on the outer surface of the annular tubes.

[0005] Furthermore, a water collection box is provided on the lower side of the cylinder, and the water collection box is connected to the cylinder through a connector, with the water outlet located directly above the water collection box.

[0006] Furthermore, the connecting component includes a connecting rod, which is installed at the lower middle position of the outer surface of the cylinder. A first flange is fixedly connected to the lower end of the connecting rod, and a second flange is fixedly connected to the first flange by bolts. A lifting rod is installed on the lower surface of the second flange, and the lower end of the lifting rod is installed at the bottom of the water collection box.

[0007] Furthermore, a drain pipe is installed on the lower part of one side of the water collection box, and a threaded cap is threadedly connected to the end of the drain pipe away from the water collection box.

[0008] Furthermore, a first ring is installed at both ends of the cylinder, and a second ring is installed at the end of the end cap near the cylinder. The first ring is connected and fixed to the second ring by multiple bolts.

[0009] Furthermore, the side of the cover facing away from the water inlet is evenly provided with multiple round holes, and a connecting pipe is fixedly connected to the outer surface of the annular pipe, with the end of the connecting pipe away from the annular pipe installed in the round hole.

[0010] The beneficial effects of this utility model are:

[0011] 1. Install a cover inside the cylinder near the inlet, and then evenly fit multiple annular tubes on the cover onto the nanofiltration membrane core. At this time, the solution entering from the inlet first enters the space formed by the cover and the cylinder, and then the solution flows into multiple annular tubes. Finally, the solution flows out through multiple branch pipes on the annular tubes, so that the solution is evenly dispersed around the nanofiltration membrane core, preventing the area of ​​the nanofiltration membrane core near the inlet from being excessively impacted.

[0012] 2. A water collection box is installed on the lower side of the container formed by the cylinder and the end cap, and the water outlet is located directly above the water collection box. When leakage occurs at the connection between the water inlet or outlet and the pipe due to sealing failure, the leaked solution drips into the water collection box, realizing the centralized collection of the solution and preventing the leaked solution from dripping randomly. Attached Figure Description

[0013] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the structure of a membrane filtration device for separating and purifying intermediates of anthelmintic drugs according to the present invention;

[0015] Figure 2 This is a cross-sectional view of a membrane filtration device for separating and purifying intermediates of anthelmintic drugs according to the present invention;

[0016] Figure 3 This is a schematic diagram of the assembly of the cover, inlet and cylinder in a membrane filtration device for separating and purifying intermediates of anthelmintic drugs according to this utility model.

[0017] Figure 4 This is a perspective view of the annular tube in a membrane filtration device for separating and purifying intermediates of anthelmintic drugs according to the present invention.

[0018] In the diagram: 1-Cylinder, 2-Inlet, 3-First Ring, 4-Water Collection Box, 5-Connecting Rod, 6-First Flange, 7-Second Flange, 8-Hanging Rod, 9-Drain Pipe, 10-Threaded Cap, 11-Second Ring, 12-Outlet, 13-End Cap, 14-Nano Filter Membrane Core, 15-Annular Pipe, 16-Casing, 17-Connecting Pipe, 18-Branch Pipe Head. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please see Figure 1 and Figure 2 This utility model provides a technical solution: a membrane filtration device for separating and purifying intermediates of anthelmintic drugs, comprising a cylindrical body 1, with detachable end caps 13 installed at both ends of the cylindrical body 1. A first ring 3 is installed at each end of the cylindrical body 1, and a second ring 11 is installed at the end of the end cap 13 near the cylindrical body 1. The first ring 3 is connected and fixed to the second ring 11 by multiple bolts, facilitating the assembly and disassembly of the end cap 13 from the cylindrical body 1. An outlet 12 is installed on the outer surface of the end cap 13, and a [missing information - likely a device or component] is installed at the middle position of the upper part of the outer surface of the cylindrical body 1. The inlet 2 is located inside the cylinder 1, where a nano-filter membrane core 14 is installed. The two ends of the nano-filter membrane core 14 are in contact with two end caps 13. The solution mixed with the intermediate of the insect repellent drug enters the space formed by the cylinder 1 and the end caps 13 through the inlet 2. When the solution passes through the nano-filter membrane core 14, the nano-filter membrane core 14 filters out the impurities. The filtered solution mixed with the intermediate of the insect repellent drug is discharged through the outlet 12. A drain valve is installed at the bottom of the cylinder 1. After opening the drain valve, the impurities inside the cylinder 1 can be discharged.

[0021] See Figures 1-4A cover 16 is installed on the inner surface of the cylinder 1 near the inlet 2. Multiple annular tubes 15 are evenly installed on the side of the cover 16 away from the inlet 2. The space formed by the cover 16 and the cylinder 1 communicates with the annular tubes 15. Multiple round holes are evenly installed on the side of the cover 16 away from the inlet 2. A connecting pipe 17 is fixedly connected to the outer surface of the annular tubes 15. The end of the connecting pipe 17 away from the annular tube 15 is installed in a round hole. The annular tube 15 is sleeved on the nanofiltration membrane core 14, and the annular tube 15 and the nanofiltration membrane core 14 are arranged concentrically. Multiple annular tubes 15 are evenly installed on the outer surface of the annular tube 15. Multiple branch pipe heads 18 facing the nanofiltration membrane core 14 are installed in the cylinder 1 near the water inlet 2 with a cover 16. Then, multiple annular tubes 15 installed on the cover 16 are evenly fitted onto the nanofiltration membrane core 14. At this time, the solution entering from the water inlet 2 first enters the space formed by the cover 16 and the cylinder 1, and then the solution flows into the multiple annular tubes 15. Finally, the solution flows out through the multiple branch pipe heads 18 on the annular tubes 15, so that the solution is evenly dispersed around the nanofiltration membrane core 14, preventing the area of ​​the nanofiltration membrane core 14 near the water inlet 2 from being excessively impacted.

[0022] See Figure 1 and Figure 2 A water collection box 4 is provided on the lower side of the cylinder 1. A connecting rod 5 is installed at the middle position of the lower part of the outer surface of the cylinder 1. The lower end of the connecting rod 5 is connected and fixed to a first flange 6. The first flange 6 is fixed to a second flange 7 by bolts. A hanger 8 is installed on the lower surface of the second flange 7. The lower end of the hanger 8 is installed at the bottom of the water collection box 4. The water outlet 12 is located directly above the water collection box 4. A drain pipe 9 is installed at the lower part of one side of the water collection box 4. The end of the drain pipe 9 away from the water collection box 4 is threadedly connected to a threaded cap 10. The water collection box 4 is set on the lower side of the container formed by the cylinder 1 and the end cap 13, and the water outlet 12 is located directly above the water collection box 4. When the connection between the water inlet 2 or the water outlet 12 and the pipe leaks due to sealing failure, the leaked solution drips into the water collection box 4, realizing the centralized collection of the solution and preventing the leaked solution from dripping randomly.

[0023] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A membrane filtration device for separating and purifying intermediates of anthelmintic drugs, comprising a cylindrical body (1), characterized in that: Both ends of the cylindrical body (1) are equipped with detachable end caps (13). An outlet (12) is installed on the outer surface of the end caps (13). An inlet (2) is installed in the middle of the upper part of the outer surface of the cylindrical body (1). A nanofiltration membrane core (14) is installed inside the cylindrical body (1). Both ends of the nanofiltration membrane core (14) are in contact with the two end caps (13). A cover (1) is installed on the inner surface of the cylindrical body (1) near the inlet (2). 6) A plurality of annular tubes (15) are evenly installed on the side of the cover (16) away from the water inlet (2). The space formed by the cover (16) and the cylinder (1) is connected to the annular tubes (15). The annular tubes (15) are sleeved on the nanofiltration membrane core (14) and the annular tubes (15) and the nanofiltration membrane core (14) are arranged concentrically. A plurality of branch pipe heads (18) facing the nanofiltration membrane core (14) are evenly installed on the outer surface of the annular tubes (15).

2. The membrane filtration device for separating and purifying intermediates of anthelmintic drugs according to claim 1, characterized in that: A water collection box (4) is provided on the lower side of the cylinder (1). The water collection box (4) is connected to the cylinder (1) through a connector. The water outlet (12) is located directly above the water collection box (4).

3. The membrane filtration device for separating and purifying intermediates of anthelmintic drugs according to claim 2, characterized in that: The connector includes a connecting rod (5). The connecting rod (5) is installed at the lower middle position of the outer surface of the cylinder (1). The lower end of the connecting rod (5) is connected and fixed to a first flange (6). The first flange (6) is fixed to a second flange (7) by bolts. A lifting rod (8) is installed on the lower surface of the second flange (7). The lower end of the lifting rod (8) is installed at the bottom of the water collection box (4).

4. The membrane filtration device for separating and purifying intermediates of anthelmintic drugs according to claim 2, characterized in that: A drain pipe (9) is installed on the lower part of one side of the water collection box (4), and a threaded cap (10) is threadedly connected to the end of the drain pipe (9) away from the water collection box (4).

5. The membrane filtration device for separating and purifying intermediates of anthelmintic drugs according to claim 1, characterized in that: Both ends of the cylinder (1) are equipped with a first ring (3), and the end cap (13) is equipped with a second ring (11) at the end near the cylinder (1). The first ring (3) is connected and fixed to the second ring (11) by multiple bolts.

6. The membrane filtration device for separating and purifying intermediates of anthelmintic drugs according to claim 1, characterized in that: The cover (16) has a plurality of round holes evenly installed on the side away from the water inlet (2). A connecting pipe (17) is fixedly connected to the outer surface of the annular pipe (15). The end of the connecting pipe (17) away from the annular pipe (15) is installed in the round hole.

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