A universal filter for amination reactions

Abstract

This utility model discloses a universal filter for amination reactions, belonging to the field of filter technology. The filter includes a tank, a cover, and a filter basket. A first pipe is connected to the tank, and a second pipe is connected to the cover. The filter basket divides the internal space of the tank into a first working space and a second working space. The filter basket includes an annular plate and a bottom plate, with a receiving container on the bottom plate. Liquid in the first working space enters the second working space after being filtered by the filter basket. The receiving container protrudes towards the second working space. This utility model, by providing a receiving container on the filter basket, facilitates the collection of some trapped particles, reduces particles retained on the filter basket, reduces the possibility of particles getting stuck in the filter holes, and reduces the frequency of the filter basket needing to be removed for cleaning. A baffle covers the receiving container, reducing the direct impact of the liquid flow on the internal cavity of the receiving container. The baffle and connecting rod are detachably connected, facilitating the collection of particles inside the receiving container.

Description

Technical Field

[0001] This utility model belongs to the field of filters, specifically relating to a general-purpose filter for amination reactions. Background Technology

[0002] Filters are required at multiple points in the carbamazepine amination reaction. Unreacted carbamazepine feedstock may clump during amination, and insoluble byproducts (such as condensation crystals) may form. If a metal catalyst is used, catalyst particles will also be present in the liquid. Basket filters are generally used for filtration. Basket filters trap these large particles, preventing them from entering subsequent reactions or purification processes. They also quickly separate catalyst particles, preventing them from participating in side reactions or contaminating products and preventing pipeline blockage. However, existing basket filters have some problems. Large particles remain in the basket, and the continuous inflow of liquid can cause them to become trapped in the filter pores. This necessitates frequent cleaning of the filter cover, but the large diameter of the basket makes it inconvenient for a single person to remove and clean it. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a universal filter for amination reactions, which reduces the amount of large particles stuck in the filter pores and reduces the frequency of cleaning large particles.

[0004] Technical solution: To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A universal filter for amination reactions includes a tank, a cover fitted onto the tank, and a filter basket disposed within the tank. A first pipe is connected to the tank, and a second pipe is connected to the cover. The filter basket divides the internal space of the tank into a first working space and a second working space. The filter basket includes an annular plate and a bottom plate. A receiving container is provided on the bottom plate. Liquid in the first working space is filtered by the filter basket and then enters the second working space. The receiving container protrudes towards the second working space.

[0006] Furthermore, the base plate is an inverted conical plate, and the lowest point of the base plate is connected to the upper end of the receiving barrel, forming a receiving cavity inside the receiving barrel.

[0007] Furthermore, a baffle is connected to the container, and the baffle is connected to the container via a connecting rod, the length of which is greater than the height of the container.

[0008] Furthermore, the baffle is a circular plate, and the diameter of the baffle is larger than the diameter of the container.

[0009] Furthermore, the center of the baffle protrudes upwards.

[0010] Furthermore, the baffle is detachably connected to the connecting rod.

[0011] Furthermore, a bracket is connected to the side wall of the tank, and a threaded rod is rotatably connected to the bracket, the threaded rod being movably connected to the cover.

[0012] Furthermore, the tank body is connected to a quick-release bolt, and the cover body is provided with a bolt groove corresponding to the quick-release bolt.

[0013] Furthermore, a third pipe is connected to the tank body, and a fourth pipe is connected to the cover body.

[0014] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0015] 1. By providing a container on the filter basket, it is easy to collect some of the trapped particles, reduce the particles remaining on the filter basket, reduce the possibility of particles getting stuck in the filter holes, and reduce the frequency of the filter basket being removed and cleaned as a whole.

[0016] 2. Install a baffle above the container to reduce the impact of the liquid flow on the inner cavity of the container and prevent the liquid flow from washing out the particles accumulated inside the container.

[0017] 3. The baffle and connecting rod are detachable, making it convenient to collect particles from the container. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0019] Figure 2 This is a schematic diagram of the filter basket structure in Example 1;

[0020] Figure 3 This is a top view schematic diagram of the filter basket structure in Example 1;

[0021] Figure 4 This is a schematic diagram of the baffle structure in Example 2. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0023] like Figure 1As shown, a general-purpose filter for amination reactions includes a tank 1, a cover 2, and a filter basket 3. The tank 1 is cylindrical in shape and sealed at the bottom with an elliptical end cap. The tank 1 is supported by multiple support feet 11. The cover 2 is fitted onto the tank 1 and is also elliptical in shape. Quick-release bolts 7 are connected to the tank 1. The quick-release bolts 7 are a combination of existing eye nuts and screw rods. The screw rod is rotatably connected to the tank 1. Multiple quick-release bolts 7 are arranged in a ring on the side of the top of the tank 1. The cover 2 has bolt grooves corresponding to the quick-release bolts 7. By rotating the screw rod into the corresponding bolt groove on the cover 2 and tightening the eye nut onto the cover 2, the cover 2 is pressed onto the tank 1 to complete the seal. A bracket 6 is connected to the side wall of the tank body 1. The bracket 6 is inverted L-shaped and has a threaded rod 61 rotatably connected to it. One end of the bracket 6 is provided with a threaded sleeve corresponding to the threaded rod 61. A handwheel 62 is provided at the upper end of the threaded rod 61. The height of the threaded rod 61 can be adjusted by rotating the threaded rod 61 through the handwheel 62. The lower end of the threaded rod 61 is movably connected to the cover body 2. A cylindrical cap is provided at the center of the top of the cover body 2. The lower end of the threaded rod 61 passes through the top wall of the cylindrical cap and enters the cylindrical cap. A protruding block is connected to the lower end of the threaded rod 61. The diameter of the protruding block is larger than the diameter of the through hole at the top of the cylindrical cap. When the threaded rod 61 rises, it drives the cover body 2 to move upward through the cylindrical cap. The lower end of the bracket 6 is movably connected to the side wall of the tank body 1. After loosening the quick-release bolt 7, the cover body 2 can be lifted by rotating the threaded rod 61 through the handwheel 62. Then, by rotating the bracket 6, the cover body 2 can be moved away from directly above the tank body 1.

[0024] like Figure 1 , Figure 2 and Figure 3As shown, the filter basket 3 is installed inside the tank 1. The filter basket 3 includes an annular plate 31 and a bottom plate 32. The filter basket 3 is cylindrical in shape, and the bottom plate 32 is an inverted conical plate. The height of the bottom plate 32 gradually decreases from the outer circumference to the center. A through hole is formed at the center of the bottom plate 32, and a receiving bucket 33 is connected to the center of the bottom plate 32. The receiving bucket 33 is positioned with its opening facing upwards and protrudes towards the second working space 102. The lowest point of the center of the bottom plate 32 is connected to the upper outer edge of the receiving bucket 33, forming a receiving cavity inside the receiving bucket 33. Multiple filter holes 301 are provided on the annular plate 31 and the bottom plate 32. The multiple filter holes 301 are evenly arranged on the annular plate 31 and the bottom plate 32. The annular plate 31 includes an edge plate 311 provided on its top side. The inner wall of the tank 1 is provided with a support ring corresponding to the edge plate 311. The filter basket 3 is supported by the edge plate 311 placed on the support ring. The filter basket 3 divides the space inside the tank 1 into a first working space 101 and a second working space 102. A second pipe 42 is connected to the cover 2. External liquid enters the first working space 101 inside the tank 1 through the second pipe 42. After being filtered by the filter basket 3, the liquid in the first working space 101 enters the second working space 102. Large particles and impurities remain on the filter basket 3. A first pipe 41 is connected to the bottom wall of the tank 1. The liquid in the second working space 102 is discharged from the tank 1 through the first pipe 41. The first pipe 41 also includes a transparent pipe 411 for easy observation of the discharged liquid.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the side plates and bottom plate of the container 33 are composed of closed plates. No through holes are provided on either the side plates or the bottom plate of the container 33. A connecting rod 51 is located at the center of the bottom plate of the container 33. The length of the connecting rod 51 is greater than the height of the container 33. A baffle 5 is connected to the upper end of the connecting rod 51. The baffle 5 is a circular plate with a diameter larger than the diameter of the container 33. Therefore, the baffle 5 is located directly above the container 33 and maintains a certain distance from the upper end of the container 33. When the filter basket 3 filters the liquid, the large particles trapped are subjected to gravity and liquid flow. Some particles will slide into the receiving tank 33 (a small number of particles may get stuck or remain on the filter basket 3), accumulating in the receiving cavity of the receiving tank 33. Since the baffle 5 is located at the top of the receiving tank 33, it reduces the direct impact of the liquid flow from top to bottom on the receiving cavity of the receiving tank 33, reducing the possibility of the accumulated particles in the receiving tank 33 being flushed out. During long-term use, it reduces the number and retention time of particles on the filter basket 3, reduces the possibility of particles getting stuck on the filter holes 301, and reduces the frequency of the filter basket 3 being removed and cleaned as a whole.

[0026] like Figure 1 and Figure 2As shown, the baffle 5 and the connecting rod 51 are detachably connected by a threaded connection. The upper end of the connecting rod 51 has an external thread, and the center of the baffle 5 has an internal thread corresponding to the connecting rod 51. After the filter has been used for a period of time, the cover 2 can be opened, the baffle 5 can be removed, and the particles in the container 33 can be collected without removing the entire filter basket 3. A third pipe 43 is connected to the side wall of the tank 1 for connecting to other external pipes, and a fourth pipe 44 is connected to the top wall of the cover 2 for connecting to other external pipes.

[0027] Example 2

[0028] like Figure 4 As shown, the difference from Embodiment 1 is that the baffle 5 in this embodiment has an upward convex plate at its center, and the outer edge of the baffle 5 is also circular. The upward convex baffle 5 can better resist the impact of liquid. The edge of the baffle 5 is closer to the surface of the bottom plate 32, which reduces the impact of the liquid flow on the aggregated particles in the container 33.

[0029] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A general filter for amination reaction, characterized by, The device includes a tank (1), a cover (2) covering the tank (1), and a filter basket (3) disposed inside the tank (1). A first pipe (41) is connected to the tank (1), and a second pipe (42) is connected to the cover (2). The filter basket (3) divides the space inside the tank (1) into a first working space (101) and a second working space (102). The filter basket (3) includes an annular plate (31) and a bottom plate (32). A receiving bucket (33) is provided on the bottom plate (32). Liquid in the first working space (101) is filtered by the filter basket (3) and then enters the second working space (102). The receiving bucket (33) protrudes towards the second working space (102).

2. The universal filter for amination reactions according to claim 1, characterized in that, The base plate (32) is an inverted conical plate, and the lowest point of the base plate (32) is connected to the upper end of the container (33), forming a receiving cavity inside the container (33).

3. The universal filter for amination reaction according to claim 2, characterized in that, A baffle (5) is connected to the container (33), and the baffle (5) is connected to the container (33) via a connecting rod (51). The length of the connecting rod (51) is greater than the height of the container (33).

4. The universal filter for amination reactions according to claim 3, characterized in that, The baffle (5) is a circular plate, and the diameter of the baffle (5) is larger than the diameter of the container (33).

5. The universal filter for amination reactions according to claim 3, characterized in that, The baffle (5) has an upward convex center.

6. The universal filter for amination reactions according to claim 3, characterized in that, The baffle (5) is detachably connected to the connecting rod (51).

7. The universal filter for amination reactions according to claim 1, characterized in that, A bracket (6) is connected to the side wall of the tank (1), and a threaded rod (61) is rotatably connected to the bracket (6). The threaded rod (61) is movably connected to the cover (2).

8. The universal filter for amination reaction according to claim 1, characterized in that, The tank body (1) is connected to a quick-release bolt (7), and the cover body (2) is provided with a bolt groove corresponding to the quick-release bolt (7).

9. The universal filter for amination reactions according to claim 1, characterized in that, The tank (1) is connected to a third pipe (43), and the cover (2) is connected to a fourth pipe (44).

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