diethyltoluene diamine reaction mixture filter tank

Abstract

The utility model discloses diethyl toluene diamine reaction mixture filter tank relates to chemical equipment field. This diethyl toluene diamine reaction mixture filter tank includes tank body, and is equipped with filter unit in tank body. Filter unit contains first, second filter screen and cleaning component, and second filter screen is below first filter screen, and cleaning component contains pivot, sleeve, brush, scraper and carousel, and cleaning component is used for beating adhering object above two. This diethyl toluene diamine reaction mixture filter tank is rotated to brush and scraper by rotating pivot, and the adhering object on first filter screen and second filter screen is beaten and cleaned, prevents filter screen to be blocked, guarantees the smooth progress of filtration process, improves the filtration efficiency. At the same time, without manual frequent cleaning filter screen, reduce the labor intensity, reduce the production interruption time because of manual cleaning, improve the continuity of production.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment, and in particular to a filter tank for a diethyltoluene diamine reaction mixture. Background Technology

[0002] Diethyltoluenediamine (DETDA) is an important chemical raw material with wide applications in numerous industrial sectors. During its production, the DETDA reaction mixture typically contains characteristic impurities from the DETDA synthesis process, such as unreacted toluenediamine (TDA), ethylation byproducts (e.g., monoethyltoluenediamine, polyethylation impurities), acidic catalyst residues (e.g., aluminum trichloride, sulfuric acid, commonly used catalysts in DETDA ethylation reactions), and solid particles agglomerated due to the acidity of the system. To obtain a high-purity DETDA product, the reaction mixture needs to be filtered to remove these impurities.

[0003] Currently, common filtration equipment presents several problems when filtering diethyltoluene diamine reaction mixtures. As the filtration process continues, a large amount of deposits gradually accumulate on the filter screen, clogging the pores and significantly reducing filtration speed and efficiency. Existing traditional filtration equipment lacks an effective cleaning mechanism, requiring regular manual cleaning of the filter screen. This not only increases labor intensity but also affects production continuity and product quality if cleaning is not timely. Therefore, developing a diethyltoluene diamine reaction mixture filter tank that can effectively solve the above problems is of significant practical importance. Utility Model Content

[0004] The purpose of this invention is to provide a filter tank for diethyltoluene diamine reaction mixture to solve the problem that traditional filtration equipment lacks an effective cleaning mechanism and requires manual cleaning of the filter screen regularly, which not only increases labor intensity but also affects the continuity of production and product quality due to untimely cleaning.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a diethyltoluene diamine reaction mixture filter tank includes a tank body, and a filter unit is provided in the tank body. The filter unit includes a first filter screen, a second filter screen, and a cleaning component. The second filter screen is disposed below the first filter screen, and the cleaning component is disposed above the first and second filter screens. The cleaning component is used to break up the deposits on the first and second filter screens.

[0006] Preferably, an inlet pipe is provided on the upper side of one side of the tank, and an outlet pipe is provided at the bottom of the tank.

[0007] Preferably, the mesh size of the second filter plate is smaller than that of the first filter plate.

[0008] Preferably, the filter unit further includes a connecting rod, which is fixedly connected between the first filter plate and the second filter plate, and the connecting rod is used to connect the first filter plate and the second filter plate into a whole.

[0009] Preferably, the cleaning assembly includes a rotating shaft, a sleeve, a brush, a scraper, and a turntable. The sleeve is fitted onto the rotating shaft, the brush is fixedly connected to one side of the sleeve, the scraper is fixedly connected to the other side of the sleeve, and the turntable is mounted on the top of the rotating shaft.

[0010] Preferably, a bolt is provided on one side of the sleeve, the bolt being used to fix the sleeve to the rotating shaft.

[0011] Preferably, a brush and a scraper are provided above both the first filter plate and the second filter plate.

[0012] Preferably, an annular baffle is provided on the inner side of the tank, and the first filter screen and the second filter screen are movably mounted on the annular baffle.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. The diethyltoluene diamine reaction mixture filter tank is equipped with a cleaning component. The brushes and scrapers in the cleaning component rotate under the drive of a rotating shaft, breaking up and cleaning the deposits on the first and second filter screens, preventing filter clogging, ensuring smooth filtration, and improving filtration efficiency. Simultaneously, it eliminates the need for frequent manual cleaning of the filter screens, reducing labor intensity, minimizing production downtime caused by manual cleaning, and improving production continuity.

[0015] 2. The diethyltoluene diamine reaction mixture filtration tank achieves staged filtration by setting a first filter plate and a second filter plate, with the pore size of the second filter plate being smaller than that of the first filter plate. The reaction mixture first undergoes preliminary filtration through the first filter plate to remove larger particles of impurities, and then undergoes fine filtration through the second filter plate, effectively improving the filtration accuracy and yielding a diethyltoluene diamine product with higher purity. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the filter unit structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the cleaning component structure of this utility model.

[0020] In the diagram: 1. Tank; 11. Inlet pipe; 12. Outlet pipe; 2. Filter unit; 21. First filter screen; 22. Second filter screen; 23. Connecting rod; 24. Cleaning assembly; 241. Rotary shaft; 242. Sleeve; 243. Brush; 244. Scraper; 245. Turntable. Detailed Implementation

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

[0022] Example 1: This utility model provides the following... Figures 1-3 The diethyltoluene diamine reaction mixture filter tank shown includes a tank body 1, and a filter unit 2 is provided inside the tank body 1. The filter unit 2 includes a first filter screen 21, a second filter screen 22, and a cleaning component 24. The second filter screen 22 is located below the first filter screen 21, and the cleaning component 24 is located above the first filter screen 21 and the second filter screen 22. The cleaning component 24 is used to break up the deposits on the first filter screen 21 and the second filter screen 22.

[0023] The tank 1 is made of acid-resistant 316L stainless steel or reinforced polypropylene, which is suitable for the acidic environment of the reaction system. The tank 1 is wrapped with a jacketed temperature control layer. The two ends of the jacket are respectively equipped with water inlet pipe and water outlet pipe, which can be used to introduce circulating hot water at 40-60℃ to maintain the temperature of the reaction mixture in the tank and prevent the DETDA mixture from becoming too cold and increasing in viscosity, which would cause impurities to adhere and clog the filter screen.

[0024] Furthermore, an inlet pipe 11 is provided on the upper side of one side of the tank 1, and an outlet pipe 12 is provided at the bottom of the tank 1. The diethyltoluene diamine reaction mixture enters the tank 1 through the inlet pipe 11 on the upper side of one side of the tank 1. First, the mixture falls onto the first filter plate 21, which performs preliminary filtration, trapping larger particles above the plate, while smaller particles and liquid pass through the mesh of the first filter plate 21 into the space below. Next, the mixture after preliminary filtration continues to fall and reaches the second filter plate 22. Because the mesh of the second filter plate 22 is smaller, it can further filter the mixture, removing even finer impurities, so that the relatively pure diethyltoluene diamine liquid after two stages of filtration flows out from the outlet pipe 12 at the bottom of the tank 1, completing the filtration process.

[0025] Furthermore, the mesh size of the second filter plate 22 is smaller than that of the first filter plate 21.

[0026] Both the first filter plate 21 and the second filter plate 22 are made of acid-resistant sintered stainless steel mesh with apertures of 80 mesh and 120 mesh, respectively, which are suitable for the graded filtration of coarse TDA particles and fine catalyst residues. The edges of the mesh plates are wrapped with polytetrafluoroethylene sealing edges to prevent acidic mixtures from leaking from the gap between the mesh plates and the tank.

[0027] Furthermore, the cleaning assembly 24 includes a rotating shaft 241, a sleeve 242, a brush 243, a scraper 244, and a turntable 245. The sleeve 242 is fitted onto the rotating shaft 241, the brush 243 is fixedly connected to one side of the sleeve 242, the scraper 244 is fixedly connected to the other side of the sleeve 242, and the turntable 245 is mounted on the top of the rotating shaft 241.

[0028] Furthermore, a bolt is provided on one side of the sleeve 242, which is used to fix the sleeve 242 to the rotating shaft 241. The sleeve 242 is fitted onto the rotating shaft 241 and fixed by the bolt. This design makes the installation and removal of the cleaning component 24 more convenient.

[0029] Furthermore, brushes 243 and scrapers 244 are installed above both the first filter plate 21 and the second filter plate 22. During the filtration process, when a certain amount of deposits accumulate on the first filter plate 21 and the second filter plate 22, the cleaning assembly 24 is activated. By rotating the turntable 245, the rotating shaft 241 is driven to rotate, and the sleeve 242 on the rotating shaft 241 rotates along with it. During the rotation, the brushes 243 on one side of the sleeve 242 continuously brush the deposits on the filter plate, breaking them up and loosening them; while the scrapers 244 on the other side of the sleeve 242 scrape the broken deposits off the filter plate, preventing them from clogging the filter again. Through the coordinated action of the brushes 243 and the scrapers 244, automatic cleaning of the filter plates is achieved, ensuring that the filtration performance of the filter plates is always in good condition, thereby maintaining the high-efficiency filtration of the filter tank.

[0030] Example 2: This utility model provides the following... Figures 1-3 The diethyltoluene diamine reaction mixture filter tank shown includes a tank body 1, and a filter unit 2 is provided inside the tank body 1. The filter unit 2 includes a first filter screen 21, a second filter screen 22, and a cleaning component 24. The second filter screen 22 is located below the first filter screen 21, and the cleaning component 24 is located above the first filter screen 21 and the second filter screen 22. The cleaning component 24 is used to break up the deposits on the first filter screen 21 and the second filter screen 22.

[0031] Furthermore, the filter unit 2 also includes a connecting rod 23, which is fixedly connected between the first filter plate 21 and the second filter plate 22. The connecting rod 23 is used to connect the first filter plate 21 and the second filter plate 22 into a whole.

[0032] Furthermore, an annular stop is provided on the inner side of the tank 1, and the first filter screen 21 and the second filter screen 22 are movably mounted on the annular stop. The connecting rod 23 connects the first filter screen 21 and the second filter screen 22 into a whole, enhancing the structural stability of the filter unit 2, making the filter screen less prone to deformation or displacement during the filtration process, and ensuring the stability of the filtration effect. Moreover, the first filter screen 21 and the second filter screen 22 are movably mounted on the annular stop on the inner side of the tank 1, which facilitates the disassembly and installation of the whole unit, and makes it convenient for the maintenance and replacement of the filter screens.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A filter tank for a diethyltoluenediamine reaction mixture, comprising a tank body (1), characterized in that, The tank (1) is provided with a filter unit (2), which includes a first filter plate (21), a second filter plate (22) and a cleaning component (24). The second filter plate (22) is located below the first filter plate (21), and the cleaning component (24) is located above the first filter plate (21) and the second filter plate (22). The cleaning component (24) is used to break up the deposits on the first filter plate (21) and the second filter plate (22).

2. The diethyltoluenediamine reaction mixture filter tank according to claim 1, characterized in that, An inlet pipe (11) is provided on one side of the tank (1), and an outlet pipe (12) is provided at the bottom of the tank (1).

3. The diethyltoluenediamine reaction mixture filter tank according to claim 1, characterized in that, The mesh size of the second filter plate (22) is smaller than that of the first filter plate (21).

4. The diethyltoluenediamine reaction mixture filter tank according to claim 1, characterized in that, The filter unit (2) also includes a connecting rod (23), which is fixedly connected between the first filter plate (21) and the second filter plate (22). The connecting rod (23) is used to connect the first filter plate (21) and the second filter plate (22) into a whole.

5. The diethyltoluenediamine reaction mixture filter tank according to claim 1, characterized in that, The cleaning assembly (24) includes a rotating shaft (241), a sleeve (242), a brush (243), a scraper (244), and a turntable (245). The sleeve (242) is fitted onto the rotating shaft (241), the brush (243) is fixedly connected to one side of the sleeve (242), the scraper (244) is fixedly connected to the other side of the sleeve (242), and the turntable (245) is mounted on the top of the rotating shaft (241).

6. The diethyltoluenediamine reaction mixture filter tank according to claim 5, characterized in that, A bolt is provided on one side of the sleeve (242), which is used to fix the sleeve (242) to the rotating shaft (241).

7. The diethyltoluenediamine reaction mixture filter tank according to claim 5, characterized in that, A brush (243) and a scraper (244) are provided above the first filter plate (21) and the second filter plate (22).

8. The diethyltoluenediamine reaction mixture filter tank according to claim 5, characterized in that, An annular baffle is provided on the inner side of the tank (1), and the first filter screen (21) and the second filter screen (22) are movably installed on the annular baffle.

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