Decoloring device

Abstract

The utility model relates to the technical field of chemical pharmaceutical production devices, and discloses a decolorizing device which comprises a shell and a decolorizing column rotationally arranged in the shell, the bottom of the shell is communicated with a liquid discharge pipe, and the decolorizing column is driven by a motor to rotate; the device further comprises a liquid inlet pipe; the decolorizing column comprises a feeding pipe, a hollow packed column, a discharging pipe, a plug and activated carbon; the packed column is filled with the activated carbon; the upper cover body is communicated with a liquid inlet pipe through a rotary joint; liquid leakage holes are uniformly distributed in the bottom and the side surface of the lower part of the packed column. The activated carbon filled in the decolorizing column is convenient to replace, so that the use efficiency of the decolorizing device is improved; the arrangement of the backflow assembly can enable the decolored liquid to be repeatedly and circularly decolored, and the decoloring effect is good.

Description

Technical Field

[0001] This utility model belongs to the technical field of chemical and pharmaceutical production equipment, and in particular relates to a decolorization device. Background Technology

[0002] In chemical and pharmaceutical production, decolorization equipment is a commonly used device for decolorizing intermediates, semi-finished products, or crude products. For example, in the production of the tridentate nitrogen-containing ligand 2,2':6',2''-terpyridine, or its derivatives, the crude product needs to be decolorized with activated carbon. After filtering out the activated carbon used for decolorization, the product is then concentrated, recrystallized, and dried to obtain the desired finished product.

[0003] However, in actual production, using powdered activated carbon for decolorization requires a subsequent filtration process to remove the activated carbon, which involves more steps and is more complicated to operate.

[0004] Chinese utility model patent CN219091163U, entitled "A Decolorizing Device Used in the Biological Production of Succinic Acid," discloses the following: It includes a decolorizing box, inside which a decolorizing assembly is installed. The decolorizing assembly includes a base plate, on which a first activated carbon decolorizing layer, a second activated carbon decolorizing layer, and a third activated carbon decolorizing layer are disposed. A collection tank is installed at the bottom of the decolorizing box, and a horizontal plate is installed on the collection tank. A motor is installed at the lower end of the horizontal plate, and a connecting shaft is installed on the lower surface of the base plate. The connecting shaft and the motor are connected by a coupling, and the decolorizing box and the decolorizing assembly are rotatably connected by bearings. The motor drives the base plate, which in turn drives the entire decolorizing assembly to rotate relative to the decolorizing box. During rotation, centrifugal force is generated, giving the liquid entering the decolorizing assembly a certain centrifugal force. Driven by this centrifugal force, the liquid quickly passes through the first, second, and third activated carbon decolorizing layers.

[0005] The aforementioned decolorization device uses an activated carbon decolorization layer. The liquid requiring decolorization only needs to pass through this layer to complete the decolorization process, eliminating the need for subsequent filtration. However, in actual use, the activated carbon decolorization layer's decolorization capacity decreases after a period of use, necessitating replacement and regeneration. The nitrogen structure is a large, integrally formed cylindrical shape, making replacement and disassembly inconvenient and reducing its efficiency.

[0006] Therefore, there is an urgent need for a decolorization device to solve the above-mentioned technical problems. Utility Model Content

[0007] The purpose of this invention is to overcome the existing technical problems and provide a decolorization device.

[0008] To achieve the above objectives, this utility model is implemented according to the following technical solution:

[0009] A decolorizing device includes a housing and a decolorizing column rotatably disposed within the housing; the bottom of the housing is connected to a drain pipe, and the decolorizing column is driven to rotate by a motor; it also includes an inlet pipe;

[0010] The decolorization column includes a feed pipe, a hollow packed column, a discharge pipe, a plug, and activated carbon; the activated carbon is filled into the packed column.

[0011] The feed pipe is rotatably positioned at the center of the upper end face of the shell, and the drain pipe is rotatably positioned at the center of the lower end face of the shell. The filling column is located inside the shell. The lower end of the feed pipe is fixedly connected to and communicates with the filling column. The upper end of the drain pipe is fixedly connected to and communicates with the filling column. A plug blocks the drain pipe, and a lower cover is connected to the lower flange of the drain pipe. An upper cover is connected to the upper flange of the feed pipe. The upper cover is connected to the feed pipe via a rotary joint.

[0012] The bottom and lower side of the packed column are evenly distributed with leakage holes;

[0013] A bevel gear A is fixedly installed on the feed pipe located outside the housing, and a bevel gear B is installed on the movable end of the motor. Bevel gear A and bevel gear B mesh with each other.

[0014] This invention's decolorization device uses granular activated carbon, with a particle size larger than the pore size of the drain hole. In use, the liquid to be decolorized enters the packed column through the inlet pipe, then exits through the drain hole into the housing, and finally exits through the outlet pipe. During the decolorization process, the motor can be driven to rotate and stop intermittently. While the decolorization column rotates, the liquid inside passes radially through the activated carbon under centrifugal force; when the column stops, the liquid moves downwards under gravity and is eventually discharged through the drain hole. The rotation of the decolorization column improves decolorization efficiency and ensures full utilization of the activated carbon, while also reducing the amount of liquid remaining in the activated carbon.

[0015] When the activated carbon needs to be replaced after a period of use, simply open the lower cover, remove the plug, and the granular activated carbon inside will be discharged through the discharge pipe. After discharge, replace the plug, open the upper cover, and refill with new granular activated carbon through the feed pipe. Activated carbon replacement is convenient and quick.

[0016] Preferably, it also includes a reflux assembly; the reflux assembly includes a reflux branch pipe A, a reflux branch pipe B, a connecting pipe, and a reflux pump; the reflux branch pipe A is connected to the side of the inlet pipe, and the reflux branch pipe B is connected to the lower part of the side of the shell; the reflux branch pipe A and the reflux branch pipe B are connected through a connecting pipe, and the connecting pipe is also connected to a reflux pump.

[0017] The reflux assembly allows the decolorized liquid to flow back into the decolorization column from the inlet pipe, creating a circulating flow throughout the decolorization process for better results.

[0018] Preferably, the plug includes a cylindrical plug block with an outer diameter smaller than the inner diameter of the discharge pipe. Two annular grooves are provided on the periphery of the plug block, and O-rings are installed in the annular grooves. A connecting rod is connected to the lower end face of the plug block.

[0019] The plug prevents activated carbon and the decolorized liquid from entering the discharge pipe, while also facilitating the discharge of activated carbon later.

[0020] Preferably, a conical guide block is fixedly installed on the upper end face of the block.

[0021] The guide block not only guides the flow of the decolorized liquid, but also leaves a large gap when the guide block is removed along with the plug, allowing the granular activated carbon to be discharged more smoothly from the discharge pipe.

[0022] Preferably, the connecting rod is a screw rod, and the head of the connecting rod is rotatably connected to the plug; a threaded sleeve is fixedly connected to the center of the lower cover, and the connecting rod passes through the threaded sleeve and is threadedly connected to the threaded sleeve; a baffle is fixed to the tail of the connecting rod, and a handle is fixed to the lower end face of the baffle;

[0023] An elastic washer is fixedly installed on the upper end face of the baffle; when the upper end face of the block is flush with the bottom surface of the filling column, the elastic washer is pressed against the lower end face of the threaded sleeve.

[0024] The connecting rod is a screw, which can be rotated to easily pull the entire block out of the discharge pipe by working with the threaded sleeve, and then the lower cover can be removed; the lower cover, block, and guide block can be disassembled together to allow the activated carbon to be discharged smoothly.

[0025] Components not specified in this invention employ conventional methods in the art, such as motor A, screw, bevel gear, rotary joint, etc. Those skilled in the art can select the appropriate model and installation method based on actual usage requirements, and clearly understand how to install and control them; therefore, they will not be described in detail here. Connection methods involved in this invention, such as flange connection, rotary connection, and fixed connection, are all commonly used connection methods in the art, and will not be described in detail again.

[0026] This utility model achieves the following beneficial effects:

[0027] This invention has a simple structure and is easy to operate. The activated carbon filled in the decolorization column is easy to replace, which improves the efficiency of the decolorization device. The reflux component allows the liquid to be decolorized to be repeatedly circulated for decolorization, resulting in a good decolorization effect. The plug prevents activated carbon and the liquid to be decolorized from entering the discharge pipe, while also facilitating the discharge of activated carbon later. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0029] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0030] Figure 3 for Figure 2 Enlarged view at point E in the middle;

[0031] Figure 4 for Figure 3 A schematic diagram of the downward movement of the middle block.

[0032] In the diagram: 1. Shell; 2. Drain pipe; 3. Motor; 4. Inlet pipe; 5. Feed pipe; 6. Packing column; 7. Discharge pipe; 8. Activated carbon; 9. Lower cover; 10. Upper cover; 11. Rotary joint; 12. Leakage hole; 13. Bevel gear A; 14. Bevel gear B; 15. Return branch pipe A; 16. Return branch pipe B; 17. Connecting pipe; 18. Return pump; 19. Plug; 20. O-ring seal; 21. Connecting rod; 22. Guide block; 23. Threaded sleeve; 24. Baffle; 25. Handle; 26. Elastic washer; 27. Groove. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0034] Example 1

[0035] like Figure 1 As shown, a decolorizing device includes a housing 1 and a decolorizing column rotatably disposed within the housing; the bottom of the housing is connected to a drain pipe 2, and the decolorizing column is driven to rotate by a motor 3; it also includes a liquid inlet pipe 4;

[0036] The decolorization column includes a feed pipe 5, a hollow filling column 6, a discharge pipe 7, a plug, and activated carbon 8; the activated carbon is filled into the filling column.

[0037] The feed pipe is rotatably mounted at the center of the upper end face of the housing via a bearing, and the drain pipe is rotatably mounted at the center of the lower end face of the housing via a bearing. The filling column is located inside the housing. The lower end of the feed pipe is fixedly connected to and communicates with the filling column. The upper end of the drain pipe is fixedly connected to and communicates with the filling column. A plug blocks the drain pipe. The lower end flange of the drain pipe is connected to a lower cover 9. The upper end flange of the feed pipe is connected to an upper cover 10. The upper cover is connected to the feed pipe via a rotary joint 11.

[0038] The bottom and lower side of the packed column are evenly distributed with leakage holes 12;

[0039] A bevel gear A13 is fixedly installed on the feed pipe located outside the housing, and a bevel gear B14 is installed on the movable end of the motor. The bevel gear A and the bevel gear B mesh with each other.

[0040] It also includes a reflux assembly; the reflux assembly includes a reflux branch pipe A15, a reflux branch pipe B16, a connecting pipe 17, and a reflux pump 18; the reflux branch pipe A is connected to the side of the inlet pipe, and the reflux branch pipe B is connected to the lower part of the side of the housing; the reflux branch pipe A and the reflux branch pipe B are connected by a connecting pipe, which is also connected to the reflux pump. The connecting pipe is an optional flexible hose, which facilitates the removal of the top cover.

[0041] The plug includes a cylindrical plug block 19 with an outer diameter smaller than the inner diameter of the discharge pipe. Two annular grooves are provided on the periphery of the plug block, and O-ring seals 20 are installed in the annular grooves. A connecting rod 21 is connected to the lower end face of the plug block.

[0042] Example 2

[0043] like Figures 2 to 4 As shown, based on Embodiment 1, a conical guide block 22 is fixedly installed on the upper end face of the block in this embodiment; the lower cover has a downward groove in the center.

[0044] The connecting rod is a screw rod, and the head of the connecting rod is rotatably connected to the plug; a threaded sleeve 23 is fixedly connected to the center of the lower cover, and the connecting rod passes through the threaded sleeve and is threadedly connected to the threaded sleeve; a baffle 24 is fixed to the tail of the connecting rod, and a handle 25 is fixed to the lower end face of the baffle;

[0045] An elastic washer 26 is fixedly installed on the upper end face of the baffle; when the upper end face of the block is flush with the bottom surface of the filling column, the elastic washer is pressed against the lower end face of the threaded sleeve.

[0046] The technical solution of this utility model is not limited to the specific embodiments described above. All technical modifications made based on the technical solution of this utility model shall fall within the protection scope of this utility model.

Claims

1. A decolorizing device, comprising a housing and a decolorizing column rotatably disposed within the housing; the bottom of the housing is connected to a drain pipe, and the decolorizing column is driven to rotate by a motor; characterized in that: It also includes the inlet pipe; The decolorization column includes a feed pipe, a hollow packed column, a discharge pipe, a plug, and activated carbon; the activated carbon is filled into the packed column. The feed pipe is rotatably positioned at the center of the upper end face of the shell, and the drain pipe is rotatably positioned at the center of the lower end face of the shell. The filling column is located inside the shell. The lower end of the feed pipe is fixedly connected to and communicates with the filling column. The upper end of the drain pipe is fixedly connected to and communicates with the filling column. A plug blocks the drain pipe, and a lower cover is connected to the lower flange of the drain pipe. An upper cover is connected to the upper flange of the feed pipe. The upper cover is connected to the feed pipe via a rotary joint. The bottom and lower side of the packed column are evenly distributed with leakage holes; A bevel gear A is fixedly installed on the feed pipe located outside the housing, and a bevel gear B is installed on the movable end of the motor. The bevel gear A and the bevel gear B mesh with each other.

2. The decolorizing device according to claim 1, characterized in that: It also includes a reflux assembly; the reflux assembly includes reflux branch pipe A, reflux branch pipe B, connecting pipe, and reflux pump; Return branch pipe A is connected to the side of the inlet pipe, and return branch pipe B is connected to the lower part of the side of the shell; return branch pipe A and return branch pipe B are connected by a connecting pipe, and a return pump is also connected to the connecting pipe.

3. The decolorizing device according to claim 1, characterized in that: The plug includes a cylindrical plug block with an outer diameter smaller than the inner diameter of the discharge pipe. Two annular grooves are provided on the periphery of the plug block, and O-rings are installed in the annular grooves. A connecting rod is connected to the lower end face of the plug block.

4. The decolorizing device according to claim 3, characterized in that: A conical guide block is fixedly installed on the upper end face of the block.

5. The decolorizing device according to claim 4, characterized in that: The connecting rod is a screw rod, and the head of the connecting rod is rotatably connected to the plug; a threaded sleeve is fixedly connected to the center of the lower cover, and the connecting rod passes through the threaded sleeve and is threadedly connected to the threaded sleeve; a baffle is fixed to the tail of the connecting rod, and a handle is fixed to the lower end face of the baffle; An elastic washer is fixedly installed on the upper end face of the baffle; when the upper end face of the block is flush with the bottom surface of the filling column, the elastic washer is pressed against the lower end face of the threaded sleeve.

Images