Solid-liquid separation device for 4-trifluoromethyl nicotinic acid crude product

Abstract

The utility model relates to the technical field of solid-liquid separation, in particular to a solid-liquid separation device for a 4-trifluoromethyl nicotinic acid crude product, which comprises a bottom plate, a plurality of supporting legs are fixedly mounted on the bottom plate, the other ends of the supporting legs are jointly connected with a separation box, a partition plate is fixedly mounted in the separation box, and the partition plate is fixedly connected with the bottom plate. A partition plate is arranged in the separation box and divides the interior of the separation box into two areas with the same size, a pair of supporting frames is fixedly installed in the separation box, the supporting frames are arranged in the two areas respectively, installation plates are arranged on the supporting frames, the bottoms of the installation plates are communicated with a plurality of filter sticks, a plurality of first filter holes are formed in the filter sticks, and the first filter holes are communicated with the installation plates. Materials in the separation box enter the multiple filter rods, liquid is discharged through the first filter holes, solids are left in the filter rods, when more solids are filtered out of the filter rods, the mounting plate is taken out and replaced through the lifting handle, separation operation can be continued, the filter rods of the device can be repeatedly used after being cleaned, damage cannot be caused, and the device is convenient to use. And the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of solid-liquid separation, in particular to a solid-liquid separation device for crude 4-trifluoromethylnicotinic acid. Background Art

[0002] In the field of chemical synthesis, 4-trifluoromethylnicotinic acid is an important organic intermediate widely used in pesticides, medicine and materials science. However, it has always been a technical problem to separate the crude 4-trifluoromethylnicotinic acid from its synthesis reaction solution. Traditional methods mainly use conventional solid-liquid separation technology, such as plate and frame filter press, etc. These technologies have problems such as low processing efficiency, high labor intensity, high water content of filter cake and unsatisfactory product purity, which seriously affect production efficiency and product quality.

[0003] The Chinese patent with publication number CN214551680U discloses a solid-liquid separation device for centrifugal separation of a crude 4-trifluoromethylnicotinic acid product. The patent comprises a shell and a shell cover covering the shell, an electric push rod is installed on the upper surface of the shell, the top end of the electric push rod is fixedly connected to the lower surface of the shell cover, the shell is installed on the upper surface of the base through supporting legs, and a solid-liquid separation cylinder is arranged inside the shell; the solid-liquid separation cylinder is composed of a cylinder body and a cylinder bottom plate, and the cylinder body and the solid-liquid separation cylinder can be driven to rotate synchronously when the fixed plate rotates under the action of the support rod and the connecting sleeve, and the support rod can be driven to move upward through the fixed plate during the extension process of the electric push rod, and then the cylinder bottom plate can be driven to move upward to cooperate with the synchronous movement of the annular scraper plate, so that the solids after centrifugation in the cylinder can be quickly cleaned out, the structure is simple, easy to use, and the cleaning rate is improved.

[0004] Based on the above search and combined with the prior art, we found that:

[0005] The existing device can conveniently remove the bottom plate of the cylinder when hanging out solid materials, which is easy to operate. At the same time, the cleaning brush can be used to clean the cylinder to avoid mesh clogging. Since the crude 4-trifluoromethylnicotinic acid product is in a solid-liquid mixed state, there are a large number of solid components in the mixed solution. During the solid-liquid separation process, it needs to be continuously cleaned with a brush. Long-term brushing will damage the solid-liquid separation cylinder, which needs to be replaced and increases the cost of use. Utility Model Content

[0006] In order to solve the above technical problems, the utility model proposes a solid-liquid separation device for crude 4-trifluoromethylnicotinic acid. The device transports materials through a total feed pipe, and allows the materials to enter two areas in a separation box through a pair of valved feed pipes and a feed pipe for solid-liquid separation. According to actual conditions, the separation operation in one area can be stopped to clean the area, and the other area continues to work, thereby improving work efficiency. The materials entering the separation box enter a plurality of filter rods, the liquid is discharged through a first filter hole, and the solid is retained in the filter rod. When more solids are filtered out of the filter rod, the mounting plate can be taken out and replaced through a handle, and the separation operation can be continued. The filter rod of the device can be reused after cleaning without causing damage, thereby reducing the use cost.

[0007] The technical solution to achieve the purpose of the utility model is: a solid-liquid separation device for crude 4-trifluoromethylnicotinic acid, comprising a bottom plate, a plurality of supporting legs fixedly mounted on the bottom plate, the other ends of the plurality of supporting legs being commonly connected to a separation box, a partition fixedly mounted inside the separation box, the partition dividing the interior of the separation box into two areas of equal size, a pair of supporting frames fixedly mounted inside the separation box, the pair of supporting frames being respectively arranged in two areas, a mounting plate being arranged on each of the pair of supporting frames, a plurality of filter rods being connected to the bottom of each of the pair of mounting plates, a plurality of first filter holes being provided on each of the plurality of filter rods, and a pair of handles being fixedly mounted on each of the pair of mounting plates.

[0008] In some embodiments, the separation box is provided with a pair of openings, each of the pair of openings is slidably connected to a filter box, the filter box is provided with a plurality of second filter holes, and the size of the second filter holes is smaller than the size of the first filter holes.

[0009] In some embodiments, a pair of drainage pipes are connected to the bottom of the separation box, a collecting box is arranged on the bottom plate, and the collecting box is located below the pair of drainage pipes.

[0010] In some embodiments, a pair of splash-proof boxes are provided on the separation box, and the pair of splash-proof boxes are respectively located above two areas separated by the partition, and the pair of splash-proof boxes are both connected to a feed pipe.

[0011] In certain embodiments, the other ends of a pair of the feed pipes are rotatably connected to a connecting sleeve, the other ends of the connecting sleeves are rotatably connected to a feed pipe with a valve, and the other ends of the pair of the feed pipes with valves are commonly connected to a main feed pipe.

[0012] Compared with the prior art, the present invention has the following significant advantages:

[0013] First, the utility model uses a pair of valved feed pipes and a feed pipe to allow materials to enter two areas in the separation box for solid-liquid separation. According to actual conditions, one of the valved feed pipes can be closed to stop the separation operation in one area, and the area can be cleaned, while the other area can continue to work, thereby improving work efficiency;

[0014] Secondly, in the utility model, the material enters the separation box through the feed pipe and then flows into a plurality of filter rods connected to the mounting plate. The liquid in the material is discharged through the first filter hole, and the solid is retained in the filter rod. When a large amount of solid is filtered out of the filter rod, the mounting plate can be taken out and replaced through the handle, and the separation operation can be continued after a new filter rod is put in. The filter rod of the device can be reused after cleaning without damage, thereby reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure from a first viewing angle provided in one embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall three-dimensional structure from a second viewing angle provided in one embodiment of the utility model;

[0018] Figure 3 It is a schematic diagram of a supporting frame structure provided in one embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of a filter rod provided in one embodiment of the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of a filter box provided in one embodiment of the utility model.

[0021] Explanation of the accompanying drawings: 1. Base plate; 2. Support legs; 3. Separation box; 4. Partition; 5. Support frame; 6. Mounting plate; 7. Filter rod; 8. First filter hole; 9. Handle; 10. Opening; 11. Filter box; 12. Second filter hole; 13. Drain pipe; 14. Collecting box; 15. Splash-proof box; 16. Feed pipe; 17. Connecting sleeve; 18. Feed pipe with valve; 19. Main feed pipe. DETAILED DESCRIPTION

[0022] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides a solid-liquid separation device for crude 4-trifluoromethylnicotinic acid by improvement. The technical solution of the utility model is:

[0024] like Figure 1-Figure 5 As shown, a solid-liquid separation device for crude 4-trifluoromethylnicotinic acid comprises a bottom plate 1, a plurality of supporting legs 2 are fixedly mounted on the bottom plate 1, the other ends of the plurality of supporting legs 2 are commonly connected to a separation box 3, a partition plate 4 is fixedly mounted inside the separation box 3, the partition plate 4 divides the interior of the separation box 3 into two areas of equal size, a pair of supporting frames 5 are fixedly mounted inside the separation box 3, the pair of supporting frames 5 are respectively arranged in the two areas, a mounting plate 6 is arranged on each of the pair of supporting frames 5, a plurality of filter rods 7 are connected to the bottom of the pair of mounting plates 6, a plurality of first filter holes 8 are opened on the plurality of filter rods 7, a pair of handles 9 are fixedly mounted on each of the pair of mounting plates 6, materials enter the separation box 3 and then flow into the plurality of filter rods 7 connected to the mounting plates 6, liquid in the materials is discharged through the first filter holes 8, solids are retained in the filter rods 7, when more solids are filtered out of the filter rods 7, the mounting plate 6 is taken out and replaced by the handle, and the separation operation can be continued after a new filter rod 7 is placed, and the filter rods 7 of the device can be reused after cleaning without causing damage, thereby reducing the use cost.

[0025] Furthermore, a pair of openings 10 are provided on the separation box 3, and a filter box 11 is slidably connected to the pair of openings 10. A plurality of second filter holes 12 are provided on the filter box 11. The size of the second filter holes 12 is smaller than the size of the first filter holes 8. A small volume of solids exists in the material filtered by the filter rod 7 and is not filtered out. The mixed material passes through the filter box 11 again. The size of the second filter holes 12 on the filter box 11 is smaller, so that the solid-liquid separation can be sufficient.

[0026] Furthermore, a pair of drain pipes 13 are connected to the bottom of the separation box 3, and a collecting box 14 is provided on the bottom plate 1. The collecting box 14 is located below the pair of drain pipes 13, and the separated liquid is discharged through the drain pipes 13 and enters the collecting box 14 for collection.

[0027] Furthermore, a pair of splash-proof boxes 15 are provided on the separation box 3 . The pair of splash-proof boxes 15 are respectively located above two areas separated by the partition plate 4 . A feed pipe 16 is connected to the pair of splash-proof boxes 15 .

[0028] Furthermore, the other ends of the pair of feed pipes 16 are rotatably connected to a connecting sleeve 17, and the other ends of the connecting sleeve 17 are rotatably connected to a valved feed pipe 18. The other ends of the pair of valved feed pipes 18 are commonly connected to a main feed pipe 19. The material is transported through the main feed pipe 19, and the material enters the two areas in the separation box 3 through the pair of valved feed pipes 18 and the feed pipe 16 for solid-liquid separation. According to actual conditions, the separation operation in one area can be stopped to clean the area, while the other area continues to work, thereby improving work efficiency.

[0029] The specific working method is: the material is transported through the main feed pipe 19, and the material is allowed to enter the two areas in the separation box 3 through a pair of valved feed pipes 18 and feed pipes 16 for solid-liquid separation. According to the actual situation, one of the valved feed pipes 18 can be closed to stop the separation operation in one area, and the area can be cleaned. The other area can continue to work, which improves the work efficiency. The splash box 15 can prevent the splashing of the entered material, and the feed pipe 16 can be rotated to move the splash box 15 to facilitate the cleaning of the inside of the separation box 3. The material enters the separation box 3 through the feed pipe 16 and then flows into the multiple filter rods 7 connected to the mounting plate 6. The liquid in the material passes through The first filter hole 8 is discharged, and the solid is retained in the filter rod 7. When more solids are filtered out of the filter rod 7, the mounting plate 6 is taken out and replaced by the handle 9. After the new filter rod 7 is put in, the separation operation can be continued. The filter rod 7 of the device can be reused after cleaning without damage, which reduces the cost of use. A smaller volume of solids is not filtered out in the material filtered by the filter rod 7, and the mixed material passes through the filter box 11 again. The second filter hole 12 on the filter box 11 is smaller in size, which can fully separate the solid and liquid. A collecting box 14 is provided on the bottom plate 1, and the collecting box 14 is located below a pair of drainage pipes 13. The separated liquid is discharged through the drainage pipe 13 and enters the collecting box 14 for collection.

[0030] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. A solid-liquid separation device for crude 4-trifluoromethylnicotinic acid, comprising a bottom plate (1), characterized in that: A plurality of supporting legs (2) are fixedly mounted on the bottom plate (1), the other ends of the plurality of supporting legs (2) are commonly connected to a separation box (3), a partition (4) is fixedly mounted inside the separation box (3), the partition (4) divides the interior of the separation box (3) into two areas of equal size, a pair of supporting frames (5) are fixedly mounted inside the separation box (3), the pair of supporting frames (5) are respectively arranged in the two areas, a mounting plate (6) is arranged on the pair of supporting frames (5), a plurality of filter rods (7) are connected to the bottom of the pair of mounting plates (6), a plurality of first filter holes (8) are provided on the plurality of filter rods (7), and a pair of handles (9) are fixedly mounted on the pair of mounting plates (6).

2. The solid-liquid separation device for crude 4-trifluoromethylnicotinic acid according to claim 1, characterized in that: The separation box (3) is provided with a pair of openings (10), each of the pair of openings (10) is slidably connected to a filter box (11), the filter box (11) is provided with a plurality of second filter holes (12), and the size of the second filter holes (12) is smaller than the size of the first filter holes (8).

3. The solid-liquid separation device for crude 4-trifluoromethylnicotinic acid according to claim 1, characterized in that: The bottom of the separation box (3) is connected to a pair of drainage pipes (13), and a collection box (14) is provided on the bottom plate (1), wherein the collection box (14) is located below the pair of drainage pipes (13).

4. The solid-liquid separation device for crude 4-trifluoromethylnicotinic acid according to claim 1, characterized in that: A pair of splash-proof boxes (15) are provided on the separation box (3), the pair of splash-proof boxes (15) are respectively located above two areas separated by the partition (4), and the pair of splash-proof boxes (15) are both connected to a feed pipe (16).

5. The solid-liquid separation device for crude 4-trifluoromethylnicotinic acid according to claim 4, characterized in that: The other ends of the pair of feed pipes (16) are both rotatably connected to a connecting sleeve (17), the other ends of the connecting sleeve (17) are rotatably connected to a feed pipe with a valve (18), and the other ends of the pair of feed pipes with valves (18) are commonly connected to a main feed pipe (19).

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