Chemical engineering batch reaction device material circulation device

Abstract

The utility model discloses a kind of chemical intermittent reaction device material circulation devices, it is related to chemical production equipment technical field, including reaction kettle, the lower portion of the reaction kettle is equipped with discharge port and is equipped with valve, the right side of the reaction kettle is equipped with material extraction port and is fixedly connected with circulation device, the front side of the circulation device is fixedly connected with reverse flushing device, the material extraction port right side of reaction kettle is fixedly connected with solenoid valve one, the right side of the solenoid valve one is fixedly connected with filter tank, the lower portion of the filter tank is equipped with discharge port and is fixedly connected with the power source of its circulating pump, the outlet of the circulating pump is fixedly connected with check valve, when the material in reaction kettle reacts, material in reaction kettle enters filter tank by solenoid valve one, and impurities are intercepted by filter cartridge, clean material returns reaction kettle by circulating pump, check valve, reflux main pipeline, shunt pipe and discharge pipeline, avoid impurities accumulation to affect reaction.

Description

Technical Field

[0001] This utility model relates to a material circulation device for a chemical batch reaction unit, and belongs to the field of chemical production equipment technology, specifically to a material circulation device for a chemical batch reaction unit. Background Technology

[0002] This product is a material circulation device for a chemical batch reaction unit, belonging to the field of chemical production equipment technology. It is mainly used in the chemical batch reaction process to help optimize reaction efficiency and product quality by circulating, filtering, and refluxing the materials in the reactor.

[0003] During the circulation process, various impurities inevitably arise or are mixed into the materials in the reactor, such as excess crystals precipitated during crystallization reactions, metal oxides generated during oxidation reactions, and salt precipitates produced during acid-base neutralization reactions. If these impurities accumulate with the materials in the circulation system, they may be mixed into the final product, which may lead to product scrap, especially in high-precision fields such as pharmaceuticals and electronic chemicals. Utility Model Content

[0004] This utility model provides a material circulation device for a chemical intermittent reaction apparatus. One purpose is to provide a real-time filtration function to solve the problem that impurities during the reaction process can affect the reaction efficiency. Another purpose is to solve the problem of cumbersome cleaning of the filter components, thereby improving the cleaning efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A material circulation device for a chemical intermittent reaction unit includes a reaction vessel, with a discharge port and valve at the bottom of the reaction vessel, a suction port on the right side of the reaction vessel and a circulation device fixedly connected thereto, and a backwashing device fixedly connected to the front side of the circulation device.

[0007] A further improvement of this utility model is that: a solenoid valve is fixedly connected to the right side of the feed port of the reactor, a filter tank is fixedly connected to the right side of the solenoid valve, a discharge port is provided below the filter tank and a circulating pump, the power source of the filter tank, is fixedly connected to the discharge port of the circulating pump, a check valve is fixedly connected to the discharge port of the circulating pump, a return main pipe is fixedly connected to the other end of the check valve, the other end of the return main pipe is fixedly connected to the reactor and a diversion pipe is fixedly connected to the inside of the reactor, and several discharge pipes are fixedly connected to the bottom of the diversion pipe.

[0008] A further improvement of the present invention is that: a filter cylinder is fixedly connected inside the filter tank and a fixing frame is fixedly connected behind the filter cylinder, and an impurity outlet is provided behind the filter cylinder.

[0009] A further improvement of the present invention is that: a solenoid valve is fixedly connected to the impurity outlet of the filter cartridge on the outside of the fixing frame one, and an impurity conveying pipe is fixedly connected to the other end of the solenoid valve two, and a solid-liquid separation tank is fixedly connected to the other end of the impurity conveying pipe.

[0010] A further improvement of this utility model is that: a fixing frame two is fixedly connected to the outside of the solid-liquid separation tank; a cleaning liquid storage tank is fixedly connected to the left side of the solid-liquid separation tank via the fixing frame two; a water outlet is provided below the solid-liquid separation tank and a cleaning liquid return pipe is fixedly connected thereto; the other end of the cleaning liquid return pipe is fixedly connected to the cleaning liquid storage tank; a water outlet is provided at the bottom of the cleaning liquid storage tank and a backwash pump, the power source of which is fixedly connected to the front; an output pipe is fixedly connected to the water outlet of the backwash pump; a backwash port is provided outside the backwash pump of the filter tank and a solenoid valve three is fixedly connected thereto; the other end of the solenoid valve three is fixedly connected to the output pipe.

[0011] A further improvement of the present invention is that: a limiting ring is fixedly connected inside the solid-liquid separation tank, a filter screen bracket is snapped above the limiting ring, the filter screen bracket is located below the impurity conveying pipe, a filter screen is provided inside the filter screen bracket, and a lifting handle is fixedly connected above the filter screen.

[0012] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0013] 1. This utility model provides a material circulation device for a chemical intermittent reaction apparatus. When the material in the reactor reacts, the material in the reactor enters the filter tank through the solenoid valve. Impurities are intercepted by the filter cartridge. The clean material returns to the reactor through the circulation pump, check valve, return main pipeline, diversion pipe and discharge pipeline, so as to avoid the accumulation of impurities affecting the reaction.

[0014] 2. This utility model provides a material circulation device for a chemical intermittent reaction device. When the backwashing device is started, solenoid valve one is closed and solenoid valves two and three are opened. The backwashing pump sends the cleaning liquid in the cleaning liquid storage tank through the output pipe and solenoid valve three into the filter tank to wash the filter cartridge. Impurities enter the solid-liquid separation tank through solenoid valve two and impurity conveying pipe, and are separated by the filter screen support. The cleaning liquid flows back through the cleaning liquid return pipe. Impurities can be removed and cleaned by pulling the handle without disassembling the filter cartridge. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the material circulation device of the chemical intermittent reaction device of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the circulation device of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the filter tank of this utility model;

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

[0019] Figure 5 This is a schematic diagram of the separation structure of the solid-liquid separation tank of this utility model.

[0020] In the diagram: 1. Reactor; 2. Circulation device; 3. Backwashing device; 21. Solenoid valve one; 22. Filter tank; 23. Circulation pump; 24. Check valve; 25. Main return pipe; 26. Diverter pipe; 27. Discharge pipe; 28. Filter cartridge; 29. ​​Fixing frame one; 31. Solenoid valve two; 32. Impurity conveying pipe; 34. Solid-liquid separation tank; 35. Fixing frame two; 36. Cleaning fluid return pipe; 37. Cleaning fluid storage tank; 38. Backwashing pump; 39. Output pipe; 310. Solenoid valve three; 311. Limiting ring; 312. Filter screen support; 313. Lifting handle. Detailed Implementation

[0021] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments:

[0022] like Figure 1 As shown, this utility model provides a material circulation device for a chemical intermittent reaction apparatus, including a reactor 1. The reactor 1 has a discharge port and a valve at its bottom. The reactor 1 has a suction port on its right side and a circulation device 2 is fixedly connected thereto. A backwashing device 3 is fixedly connected to the front side of the circulation device 2. The suction port on the right side of the reactor 1 is the starting point of the circulation and is directly connected to the solenoid valve 21 of the circulation device 2 through a pipeline to ensure that the material can smoothly enter the circulation system. The backwashing device 3 is connected to the filter tank 22 of the circulation device 2 through a pipeline to realize the directional delivery of the cleaning liquid.

[0023] like Figure 2As shown, this utility model provides a technical solution: a solenoid valve 21 is fixedly connected to the right side of the feed port of the reactor 1; a filter tank 22 is fixedly connected to the right side of the solenoid valve 21; a discharge port is provided below the filter tank 22 and a circulating pump 23, the power source of the filter tank 22, is fixedly connected to it; a check valve 24 is fixedly connected to the outlet of the circulating pump 23; a return main pipe 25 is fixedly connected to the other end of the check valve 24; the other end of the return main pipe 25 is fixedly connected to the reactor 1, and a diversion pipe 26 is fixedly connected to the inside of the reactor 1; several... The dry discharge pipe 27 connects to the discharge port of the reactor 1 via a solenoid valve 21 and a filter tank 22. The solenoid valve 21 controls the start and stop of the circulation. Meanwhile, the discharge port below the filter tank 22 is connected to a circulation pump 23 to provide power for the material flow. The outlet of the circulation pump 23 is connected to a check valve 24 to prevent material backflow. The check valve 24 is connected to the reactor 1 via a return main pipe 25. The return main pipe 25 extends into a branch pipe 26 inside the reactor. Several discharge pipes 27 are provided below the branch pipe 26 to ensure that the returned material is evenly distributed in the reactor and to avoid local impact.

[0024] like Figure 3 As shown, this utility model provides a technical solution: a filter cylinder 28 is fixedly connected inside the filter tank 22, and a fixing frame 29 is fixedly connected behind the filter cylinder 28. An impurity outlet is provided at the rear of the filter cylinder 28. The filter cylinder 28 inside the filter tank 22 is a cylindrical filter screen structure, which is supported and fixed by the fixing frame 29 at the rear to ensure that it will not shake due to the impact of the material during filtration. At the same time, the impurity outlet of the filter cylinder 28 is connected to an external pipe, which serves as both a temporary storage channel for impurities during filtration and a path for impurities to be discharged during cleaning, thus achieving a seamless connection between filtration and impurity discharge.

[0025] like Figure 4As shown, this utility model provides a technical solution: A solenoid valve 31 is fixedly connected to the impurity outlet of the filter cartridge 28 on the outside of a fixing frame 29. An impurity conveying pipe 32 is fixedly connected to the other end of the solenoid valve 31. A solid-liquid separation tank 34 is fixedly connected to the other end of the impurity conveying pipe 32. A fixing frame 35 is fixedly connected to the outside of the solid-liquid separation tank 34. A cleaning fluid storage tank 37 is fixedly connected to the left side of the solid-liquid separation tank 34 via the fixing frame 35. A water outlet is provided below the solid-liquid separation tank 34 and a cleaning fluid return pipe 36 is fixedly connected to it. The other end of the cleaning fluid return pipe 36 is fixedly connected to the cleaning fluid storage tank 37. The bottom of the cleaning fluid storage tank 37 is provided with an outlet and a backwash pump 38, the power source of which is fixedly connected to the front. The outlet of the backwash pump 38 is fixedly connected to an output pipe 39. The filter tank 22 is provided with a backwash port on the outside of the backwash pump 38 and is fixedly connected to a solenoid valve 310. The other end of the solenoid valve 310 is fixedly connected to the output pipe 39. During cleaning, the solenoid valve 310 is opened, and the backwash pump 38 pressurizes the cleaning fluid in the cleaning fluid storage tank 37 and delivers it to the filter tank 22. The cleaning fluid flows through the filter cartridge 28 in the opposite direction to the material filtration, effectively removing impurities trapped on the surface.

[0026] like Figure 5 As shown, this utility model provides a technical solution: a limiting ring 311 is fixedly connected inside the solid-liquid separation tank 34, and a filter screen bracket 312 is snapped above the limiting ring 311. The filter screen bracket 312 is located below the impurity conveying pipe 32. A filter screen is provided inside the filter screen bracket 312, and a lifting handle 313 is fixedly connected above the filter screen. When the cleaning liquid containing impurities enters the tank, solid-liquid separation is achieved through the filter screen of the filter screen bracket 312. The liquid flows back to the cleaning liquid storage tank 37 through the cleaning liquid return pipe 36 at the bottom of the tank, and the impurities remain on the surface of the filter screen. For the impurities on the surface of the filter screen, the filter screen bracket 312 can be removed by lifting the handle 313 for cleaning.

[0027] The working principle of the material circulation device of this chemical batch reaction unit will be explained in detail below.

[0028] like Figure 1-5As shown, when the material undergoes an intermittent reaction in the reactor 1, the solenoid valve 21 at the discharge port on the right side of the reactor 1 opens. The material inside the reactor flows into the filter cartridge 28 inside the filter tank 22 via a pipe under gravity. The filter cartridge 28 is fixed by a bracket 29, and its filter screen can trap solid impurities in the material. The filtered clean material enters the cavity of the filter tank 22 and is then drawn by the circulating pump 23 connected to the discharge port at the bottom of the filter tank 22. This pump serves as the power source to transport the material to the check valve 24. After passing through the check valve 24, the material enters... The material enters the main return pipe 25 and is finally delivered to the distribution pipe 26 inside the reactor 1. Several discharge pipes 27 connected below the distribution pipe 26 evenly disperse the material back into the reactor 1, where it mixes with the material inside and continues to react. When the circulating pump 23 stops running, the check valve 24 can intercept the material falling downward in the main return pipe 25, preventing it from flowing back into the filter tank 22 and ensuring the stability of the system during the next startup. When the filter cartridge 28 needs to be cleaned, the system switches to the reverse flushing mode, first closing the solenoid valve 21 to cut off the reaction. The material passage between vessel 1 and filter tank 22 is established; simultaneously, solenoid valves 2 and 310 are opened to connect the cleaning circuit, and then the backwash pump 38 is started. Powered by the cleaning fluid storage tank 37, the cleaning fluid in the storage tank is transported through the output pipe 39 and solenoid valve 310 to the backwash port of filter tank 22 to backwash the filter cartridge 28, removing impurities trapped on its surface. The cleaning fluid carrying the impurities then flows out from the impurity outlet at the rear of filter cartridge 28, and enters the solid-liquid separation tank 34 through solenoid valve 2 31 and impurity conveying pipe 32. The solid-liquid separation tank 34 is fixed by the fixing frame 35. The internal filter screen support 312 is snapped in by the limiting ring 311. The filter screen can perform secondary filtration of impurities to achieve solid-liquid separation. The separated clean cleaning liquid flows back to the cleaning liquid storage tank 37 through the cleaning liquid return pipe 36 below the solid-liquid separation tank 34 to achieve recycling. At the same time, the intercepted solid impurities remain in the filter screen support 312. The filter screen support 312 can be removed from the solid-liquid separation tank 34 by pulling the handle 313. After manually cleaning the impurities, it is reinstalled to complete the cleaning process.

[0029] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A material circulation device for a chemical batch reaction unit, comprising a reaction vessel (1), characterized in that: The reactor (1) has a discharge port and a valve at its bottom. The reactor (1) has a suction port on its right side and a circulation device (2) is fixedly connected to it. The circulation device (2) is fixedly connected to a backwashing device (3) at its front side. The reactor (1) has a solenoid valve (21) fixedly connected to the right side of the suction port. The solenoid valve (21) has a filter tank (22) fixedly connected to the right side of the filter tank (22). The filter tank (22) has a filter cylinder (28) fixedly connected inside and a fixing frame (29) fixedly connected behind the filter cylinder (28). The filter cylinder (28) has an impurity outlet at its rear. The filter cylinder (28) has a solenoid valve (31) fixedly connected to the impurity outlet outside the fixing frame (29). The other end of the solenoid valve (31) is fixedly connected to an impurity conveying pipe (32). The other end of the impurity conveying pipe (32) is fixedly connected to a solid-liquid separation tank (34). A fixing frame two (35) is fixedly connected to the outside of the solid-liquid separation tank (34). A cleaning liquid storage tank (37) is fixedly connected to the left side of the solid-liquid separation tank (34). A water outlet is provided below the solid-liquid separation tank (34) and a cleaning liquid return pipe (36) is fixedly connected. The other end of the cleaning liquid return pipe (36) is fixedly connected to the cleaning liquid storage tank (37). A water outlet is provided at the bottom of the cleaning liquid storage tank (37) and a backwash pump (38) is fixedly connected to the front of it. An output pipe (39) is fixedly connected to the water outlet of the backwash pump (38). A backwash port is provided outside the backwash pump (38) and a solenoid valve three (310) is fixedly connected. The other end of the solenoid valve three (310) is fixedly connected to the output pipe (39).

2. The material circulation device for a chemical intermittent reaction unit according to claim 1, characterized in that: The filter tank (22) has a discharge port at the bottom and a circulation pump (23) that is its power source is fixedly connected to it. A check valve (24) is fixedly connected to the outlet of the circulation pump (23). The other end of the check valve (24) is fixedly connected to a return main pipe (25). The other end of the return main pipe (25) is fixedly connected to the reactor (1) and a diversion pipe (26) is fixedly connected to the inside of the reactor (1). Several discharge pipes (27) are fixedly connected below the diversion pipe (26).

3. The material circulation device for a chemical intermittent reaction unit according to claim 2, characterized in that: The solid-liquid separation tank (34) is fixedly connected to a limiting ring (311), and a filter screen bracket (312) is snapped above the limiting ring (311). The filter screen bracket (312) is located below the impurity conveying pipe (32). The filter screen bracket (312) is equipped with a filter screen inside and a lifting handle (313) is fixedly connected above the filter screen.

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