Efficient decolorizing kettle for acetaminophen production

Abstract

The utility model discloses an efficient decolorizing kettle for acetaminophen production, which relates to the technical field of decolorizing devices and comprises a decolorizing outer cylinder, a decolorizing inner cylinder fixedly connected in the decolorizing outer cylinder, an upper cover fixedly connected to the upper end of the decolorizing inner cylinder, a feed port and a driving device arranged on the upper cover, and a stirring device rotatably connected to the center of the upper cover. The stirring device is located in the inner decolorizing barrel and is in transmission connection with the driving device, a filtering device is connected to the center of the lower end of the inner decolorizing barrel, an electromagnetic valve is arranged at the upper end of the filtering device, the filtering device comprises a filtering barrel, a cleaning and discharging device is slidably connected into the filtering barrel, and an air cylinder device is connected to the lower end of the cleaning and discharging device; the air cylinder device can drive the cleaning and discharging device to move up and down in the filter cylinder, filtering and discharging are efficiently and rapidly carried out, the filter cylinder is cleaned, the decolorizing kettle can be cleaned while stirring is carried out, filtering and discharging are efficiently and rapidly carried out, and the working efficiency of equipment is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of decolorization equipment, specifically relating to a high-efficiency decolorization kettle for the production of acetaminophen. Background Technology

[0002] Decolorization of acetaminophen is an important step in its production process, mainly aimed at removing impurities generated during synthesis to improve the purity and quality of the product.

[0003] Chinese Patent Application No. CN202022727184.5 discloses a high-efficiency decolorizing reactor for the production of methylpyridinium phosphate. In use, methylpyridinium phosphate raw material, a solvent, and a decolorizing agent are injected into the reactor through a hopper. Then, a motor and heating coil are activated by a switch. The motor drives the stirring blades via a rotating shaft to mix the raw materials in the reactor, while the heating coil heats the materials, causing the methylpyridinium phosphate raw material to dissolve in the solvent. Simultaneously, the methylpyridinium phosphate reacts with the decolorizing agent to decolorize the material, completing the decolorization process. The material is then automatically filtered before being discharged, significantly improving decolorization efficiency. However, this structure suffers from poor stirring performance and lacks a cleaning mechanism for the inner wall of the decolorizing reactor. Furthermore, the filter frame needs to be disassembled for cleaning, maintenance, and removal of filter residue, affecting the equipment's operating efficiency. Utility Model Content

[0004] To address the problems mentioned in the background, this invention provides a high-efficiency decolorizing kettle for acetaminophen production, which can clean the kettle while stirring, and efficiently and quickly filter and discharge materials, thereby improving equipment efficiency.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0006] A high-efficiency decolorizing kettle for acetaminophen production includes a decolorizing outer cylinder and a decolorizing inner cylinder fixedly connected inside the outer cylinder. A top cover is fixedly connected to the upper end of the inner cylinder, and the top cover has a feed inlet and a driving device. A stirring device is rotatably connected to the center of the top cover and is located inside the inner cylinder. The stirring device is driven by the driving device. A filter device is connected to the center of the lower end of the inner cylinder. A solenoid valve is provided at the upper end of the filter device to control the connection and disconnection between the filter device and the inner cylinder. The filter device includes a filter cylinder, and a cleaning and discharging device is slidably connected inside the filter cylinder. A cylinder is connected to the lower end of the cleaning and discharging device, and the cylinder can drive the cleaning and discharging device to move up and down inside the filter cylinder, efficiently and quickly performing filtration and discharge, and cleaning the filter cylinder.

[0007] As a further feature of the above scheme, a middle partition is provided in the middle of the inner wall of the decolorizing outer cylinder, a heating chamber is located above the middle partition, a filtration chamber is located below the middle partition, a steam circulation pipe is provided on the heating chamber, and a discharge pipe is provided on the filtration chamber.

[0008] As a further feature of the above scheme, a decolorizing semi-circular tank is fixedly connected to the lower end of the decolorizing inner cylinder. An installation slot is opened at the center of the lower end face of the decolorizing semi-circular tank. The installation slot is used to install a solenoid valve. The decolorizing semi-circular tank is located inside the heating chamber.

[0009] As a further provision of the above scheme, the stirring device includes a rotating main shaft connected to a drive device. A mounting platform is fixedly connected to the lower end of the rotating main shaft. An alternating ring bracket is connected to the mounting platform. The ring bracket is coaxial with the decolorizing semi-circular tank. A stirring column is provided inside the ring bracket. A rotating groove is opened at the lower end of the ring bracket. The rotating groove is rotatably connected to the outer end of the solenoid valve.

[0010] As a further feature of the above solution, the filter cylinder is located inside the filter chamber and its upper end is fixedly connected to the middle partition plate. The lower end of the filter cylinder protrudes from the bottom plate of the decolorizing outer cylinder, and a mounting bracket fixed to the bottom plate of the decolorizing outer cylinder is provided below the filter cylinder.

[0011] As a further provision of the above scheme, the cleaning and discharging device includes a cleaning upper circular plate with a through groove, and a vertically downward support column on the lower end face of the cleaning upper circular plate. A sealing lower circular plate is fixedly connected to the lower end of the support column, and the cleaning upper circular plate and the sealing lower circular plate are slidably and sealingly connected to the inner wall of the filter cylinder.

[0012] As a further feature of the above solution, the cylinder device includes a cylinder, which is fixedly connected to the mounting bracket. The cylinder is provided with a vertically upward connecting rod, the upper end of which is fixedly connected to the lower sealing circular plate. The cylinder drives the cleaning upper circular plate and the sealing lower circular plate to move up and down inside the filter cylinder through the connecting rod, so as to efficiently and quickly filter and discharge materials, and clean the filter cylinder.

[0013] This utility model has the following beneficial effects:

[0014] The stock solution and decolorizing agent are added to the inner decolorizing cylinder through the feed inlet. Steam is added to the heating chamber through the steam circulation pipe to heat the stock solution and decolorizing agent. The drive device drives the stirring device to rotate inside the inner decolorizing cylinder, increasing the stirring effect and cleaning the inner wall of the decolorizing kettle, thus improving the decolorization efficiency. When the solenoid valve is activated, the stock solution and decolorizing agent enter the filter cylinder through the through groove. After filtration, they enter the filter chamber, while solid residue remains in the filter cylinder. The cylinder drives the cleaning upper circular plate and the sealing lower circular plate to move downward inside the filter cylinder through the connecting rod, automatically discharging the solid residue and cleaning the filter cylinder at the same time, greatly improving the working efficiency of the equipment. Attached Figure Description

[0015] Figure 1 This is a first cross-sectional schematic diagram of the present invention;

[0016] Figure 2 This is a second cross-sectional view of the present invention;

[0017] Figure 3 This is a schematic diagram of the decolorizing inner cylinder of this utility model;

[0018] Figure 4 This is a schematic diagram of the stirring device of this utility model;

[0019] Figure 5 This is a schematic diagram of the cleaning and discharging device of this utility model.

[0020] 1. Decolorizing outer cylinder; 2. Top cover; 3. Drive device; 4. Feed inlet; 5. Decolorizing inner cylinder; 6. Stirring device; 7. Filtering device; 8. Solenoid valve; 101. Intermediate partition plate; 102. Steam circulation pipe; 103. Discharge pipe; 501. Decolorizing semi-circular tank; 502. Mounting slot; 601. Rotating spindle; 602. Mounting platform; 603. Circular support; 604. Stirring column; 605. Rotating groove; 701. Mounting bracket; 702. Cylinder device; 7021. Cylinder; 7022. Connecting rod; 703. Cleaning and discharging device; 7031. Cleaning upper circular plate; 7032. Sealing lower circular plate; 7033. Support column; 7034. Through groove; 704. Filter cylinder. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-5 This application will be described in detail with reference to the embodiments.

[0023] like Figure 1 , Figure 2As shown, a high-efficiency decolorizing kettle for acetaminophen production includes an inner decolorizing cylinder 5 fixedly connected inside a decolorizing outer cylinder 1. A top cover 2 is fixedly connected to the upper end of the inner decolorizing cylinder 5, and the top cover 2 has a feed inlet 4 and a driving device 3. A stirring device 6 is rotatably connected to the center of the top cover 2. The stirring device 6 is located inside the inner decolorizing cylinder 5 and is connected to the driving device 3. A filter device 7 is connected to the center of the lower end of the inner decolorizing cylinder 5. A solenoid valve 8 is provided at the upper end of the filter device 7, which controls the connection and disconnection between the filter device 7 and the inner decolorizing cylinder 5. The filter device 7 includes a filter cylinder 704, and a cleaning and discharging device 703 is slidably connected inside the filter cylinder 704. A cylinder device 702 is connected to the lower end of the cleaning and discharging device 703, which can drive the cleaning and discharging device 703 to move up and down inside the filter cylinder 704, efficiently and quickly filtering and discharging, and cleaning the filter cylinder 704.

[0024] The inner wall of the decolorizing outer cylinder 1 is provided with a middle partition plate 101 in the middle position. The space above the middle partition plate 101 is a heating chamber, and the space below the middle partition plate 101 is a filtering chamber. The heating chamber is provided with a steam circulation pipe 102, and the filtering chamber is provided with a discharge pipe 103.

[0025] like Figure 3 As shown, a decolorizing semi-circular tank 501 is fixedly connected to the lower end of the decolorizing inner cylinder 5. An installation slot 502 is opened at the center of the lower end face of the decolorizing semi-circular tank 501. The installation slot 502 is used to install the solenoid valve 8. The decolorizing semi-circular tank 501 is located in the heating chamber.

[0026] like Figure 4 As shown, the stirring device 6 includes a rotating spindle 601, which is connected to the drive device 3. A mounting platform 602 is fixedly connected to the lower end of the rotating spindle 601. An alternating ring brackets 603 are connected to the mounting platform 602. The ring brackets 603 are coaxial with the decolorizing semi-circular tank 501. A stirring column 604 is provided inside the ring brackets 603. A rotating groove 605 is opened at the lower end of the ring brackets 603. The rotating groove 605 is rotatably connected to the outer end of the solenoid valve 8.

[0027] like Figure 1 , Figure 5 As shown, the filter cylinder 704 is located inside the filter chamber and its upper end is fixedly connected to the middle partition plate 101. The lower end of the filter cylinder 704 protrudes from the bottom plate of the decolorizing outer cylinder 1. A mounting bracket 701 fixed to the bottom plate of the decolorizing outer cylinder 1 is provided below the filter cylinder 704. The cleaning and discharging device 703 includes a cleaning upper circular plate 7031. A through groove 7034 is opened on the cleaning upper circular plate 7031. A vertically downward support column 7033 is provided on the lower end face of the cleaning upper circular plate 7031. A sealing lower circular plate 7032 is fixedly connected to the lower end of the support column 7033. The cleaning upper circular plate 7031 and the sealing lower circular plate 7032 are slidably and sealingly connected to the inner wall of the filter cylinder 704.

[0028] The cylinder device 702 includes a cylinder 7021, which is fixedly connected to the mounting bracket 701. The cylinder 7021 is provided with a vertically upward connecting rod 7022. The upper end of the connecting rod 7022 is fixedly connected to the lower sealing circular plate 7032. The cylinder 7021 drives the cleaning upper circular plate 7031 and the sealing lower circular plate 7032 to move up and down inside the filter cylinder 704 through the connecting rod 7022, so as to efficiently and quickly filter and discharge materials, and clean the filter cylinder 704.

[0029] The working process of this utility model is as follows: The raw liquid and decolorizing agent are added into the decolorizing inner cylinder 5 through the feed port 4. Steam is added to the heating chamber through the steam circulation pipe 102 to heat the raw liquid and decolorizing agent. The driving device 3 drives the stirring device 6 to rotate in the decolorizing inner cylinder 5. The stirring column 604 agitates and increases the stirring effect. The circular support 603 cleans the inner wall of the decolorizing semi-circular tank 501 at the same time. The solenoid valve 8 is activated, and the raw liquid and decolorizing agent enter the filter cylinder 704 through the through groove 7034. After filtration, they enter the filter chamber. The solid residue remains in the filter cylinder 704. The cylinder 7021 drives the cleaning upper circular plate 7031 and the sealing lower circular plate 7032 to move downward in the filter cylinder 704 through the connecting rod 7022, automatically discharging the solid residue and cleaning the inner wall of the filter cylinder 704 at the same time.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. 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 high-efficiency decolorizing autoclave for acetaminophen production, comprising a decolorizing outer cylinder, a decolorizing inner cylinder fixedly connected inside the outer cylinder, a top cover fixedly connected to the upper end of the inner cylinder, and a feed inlet and a driving device on the top cover, characterized in that... A stirring device is rotatably connected to the center of the top cover. The stirring device is located inside the decolorizing inner cylinder and is connected to a driving device. A filter device is connected to the center of the lower end of the decolorizing inner cylinder. A solenoid valve is provided at the upper end of the filter device. The filter device includes a filter cylinder. A cleaning and discharging device is slidably connected inside the filter cylinder. A cylinder device is connected to the lower end of the cleaning and discharging device. The cylinder device can drive the cleaning and discharging device to move up and down inside the filter cylinder.

2. The high-efficiency decolorizing reactor for acetaminophen production according to claim 1, characterized in that, The inner wall of the decolorizing outer cylinder is provided with a middle partition plate. Above the middle partition plate is a heating chamber, and below the middle partition plate is a filtration chamber. The heating chamber is provided with a steam circulation pipe, and the filtration chamber is provided with a discharge pipe.

3. The high-efficiency decolorizing reactor for acetaminophen production according to claim 1, characterized in that, The lower end of the decolorizing inner cylinder is fixedly connected to a decolorizing semi-circular tank. An installation hole groove is opened at the center of the lower end face of the decolorizing semi-circular tank, and the decolorizing semi-circular tank is located inside the heating chamber.

4. The high-efficiency decolorizing reactor for acetaminophen production according to claim 3, characterized in that, The stirring device includes a rotating main shaft connected to a drive device. A mounting platform is fixedly connected to the lower end of the rotating main shaft. An alternating ring bracket is connected to the mounting platform. The ring bracket is coaxial with the decolorizing semi-circular tank. A stirring column is provided inside the ring bracket. A rotating groove is opened at the lower end of the ring bracket. The rotating groove is rotatably connected to the outer end of the solenoid valve.

5. The high-efficiency decolorizing reactor for acetaminophen production according to claim 1, characterized in that, The filter cylinder is located inside the filter chamber and its upper end is fixedly connected to the middle partition plate. The lower end of the filter cylinder protrudes from the bottom plate of the decolorizing outer cylinder. A mounting bracket fixed to the bottom plate of the decolorizing outer cylinder is provided below the filter cylinder.

6. The high-efficiency decolorizing reactor for acetaminophen production according to claim 1, characterized in that, The cleaning and discharging device includes an upper cleaning plate with a through groove, and a vertically downward support column on the lower end face of the upper cleaning plate. A sealing lower plate is fixedly connected to the lower end of the support column. The upper cleaning plate and the sealing lower plate are slidably and sealingly connected to the inner wall of the filter cylinder.

7. The high-efficiency decolorizing reactor for acetaminophen production according to claim 5, characterized in that, The cylinder device includes a cylinder, which is fixedly connected to the mounting bracket. The cylinder is provided with a vertically upward connecting rod, and the upper end of the connecting rod is fixedly connected to the lower sealing circular plate.

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