Solvent-out crystallization device for pesticide intermediate

Abstract

The utility model discloses a solvent-out crystallization device for pesticide intermediates, which comprises a solvent-out tank, a liquid inlet pipe and a feed hopper are arranged on the solvent-out tank, a water storage hopper is fixedly connected to the inner wall of the solvent-out tank, a discharge pipe is rotatably connected to the lower part of the water storage hopper, and a separation mechanism for separating crystals from liquid is arranged in the solvent-out tank. The separation mechanism comprises a filter screen cylinder rotationally connected to the side wall of the discharging pipe, a discharging pipe is arranged below the filter screen cylinder in a communicating mode, a sealing cover is arranged on the discharging pipe, a drainage pipe is arranged below the solventing-out tank in a communicating mode, and an electric valve is arranged on the water storage hopper. The separation mechanism is arranged, crystals are separated out on the water storage hopper, solid-liquid separation can be completed in the equipment through rotation of the filter screen cylinder, the equipment has the separation function, a solution does not need to be transferred into special equipment for separation, and therefore the equipment is richer in function.

Description

Technical Field

[0001] The utility model relates to the technical field of dissolution crystallization devices for pesticide intermediates, in particular to a dissolution crystallization device for pesticide intermediates. Background Art

[0002] During the production process of pesticides, various intermediate chemical reactions are used to obtain the final target product. Dissolution crystallization is a method of dissolving the solute in water or other organic solvents, and then adding a certain solvent (called a dissolving agent or precipitating agent) to reduce the solubility of the solute in the original solvent, thereby quickly crystallizing out.

[0003] The existing dissolution crystallization device for pesticide intermediates has a relatively simple function. It is only a place for dissolution crystallization of pesticide intermediates. The generated crystals are then obtained through a filtering device. However, these obtained crystals contain a large amount of water and cannot be directly effectively separated from the liquid in the current equipment. They must be transferred to other specialized equipment to achieve this. This exposes the functional deficiency of the current equipment, that is, it does not have the ability to separate solids and liquids. Therefore, it is necessary to design a dissolution crystallization device for pesticide intermediates to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a dissolution crystallization device for pesticide intermediates.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A dissolution crystallization device for a pesticide intermediate comprises a dissolution tank, wherein the dissolution tank is provided with a liquid inlet pipe and a feeding hopper, the inner wall of the dissolution tank is fixedly connected to a water storage hopper, a discharge pipe is rotatably connected below the water storage hopper, a separation mechanism for separating crystals and liquid is provided in the dissolution tank, the separation mechanism comprises a filter screen cylinder rotatably connected to the side wall of the discharge pipe, a discharge pipe is connected below the filter screen cylinder, a sealing cover is provided on the discharge pipe, a drain pipe is connected below the dissolution tank, an electric valve is provided on the water storage hopper, a discharge port is opened on the side wall of the dissolution tank, a sealing plate is provided in the discharge port, a motor is installed on the inner wall of the dissolution tank through a mounting assembly, a second gear and a first gear are respectively provided on the motor output shaft and the discharge pipe, and an observation mechanism for observing the dissolution of liquid is provided on the side wall of the dissolution tank.

[0007] Preferably, the observation mechanism comprises two observation ports opened on the side wall of the dissolution tank, and observation windows are provided in the observation ports.

[0008] Preferably, a transverse plate is fixedly connected to the inner wall of the dissolution tank, and the discharge pipe is rotatably connected to the transverse plate.

[0009] Preferably, the bottom of the dissolution tank is provided with an inclined surface, and the drain pipe is provided with a drain valve.

[0010] Preferably, a mounting plate is fixedly connected to the side wall of the dissolution tank, an electric slider is provided on the mounting plate, and a material guide plate is fixedly connected to the upper end of the electric slider.

[0011] Preferably, the mounting plate is an electric slide rail, and the cross-section of the guide plate is C-shaped.

[0012] The utility model has the following beneficial effects:

[0013] 1. This device is equipped with a separation mechanism. Crystals are precipitated on the water storage bucket. Through the rotation of the filter cylinder, solid-liquid separation can be completed inside the device, so that the device has a separation function. There is no need to transfer the solution to a special device for separation, which makes the device more functional.

[0014] 2. The device is provided with a material guide plate, which can be used to extend it under the discharge pipe. The material guide plate catches the crystal so that the crystal rolls out along the inclined surface of the material guide plate, thereby facilitating the crystal receiving;

[0015] 3. The device is provided with an electric slide rail, which can drive the guide plate to move left or right by starting the electric slide rail, so that there is no need to move the guide plate manually, thereby improving the automation degree of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a dissolution crystallization device for a pesticide intermediate proposed by the utility model;

[0017] Figure 2 for Figure 1 A magnified view of the structure at A;

[0018] Figure 3 for Figure 1 Side view of

[0019] Figure 4 It is a side view of a dissolution crystallization device for pesticide intermediates proposed by the utility model.

[0020] In the figure: 1 dissolution tank, 2 observation port, 3 observation window, 4 filter screen cylinder, 5 sealing cover, 6 discharge pipe, 7 discharge port, 8 sealing plate, 9 drain pipe, 10 water storage hopper, 11 electric valve, 12 discharge pipe, 13 first gear, 14 motor, 15 second gear, 16 cross plate, 17 mounting plate, 18 electric slider, 19 guide plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-4 A dissolution crystallization device for pesticide intermediates includes a dissolution tank 1, which includes a tank body and a tank cover, the joint of which is not shown in the figure, a liquid inlet pipe and a feeding hopper are arranged on the dissolution tank 1, a water storage bucket 10 is fixedly connected to the inner wall of the dissolution tank 1, and a discharge pipe 12 is rotatably connected under the water storage bucket 10, a separation mechanism for separating crystals and liquid is arranged in the dissolution tank 1, and the separation mechanism includes a filter screen cylinder 4 rotatably connected to the side wall of the discharge pipe 12, a discharge pipe 6 is connected below the filter screen cylinder 4, a sealing cover 5 is arranged on the discharge pipe 6, and a sealing cover 5 is arranged below the dissolution tank 1 There is a drain pipe 9, an electric valve 11 is provided on the water storage hopper 10, a discharge port 7 is opened on the side wall of the dissolution tank 1, a sealing plate 8 is provided in the discharge port 7, and the connection between the sealing plate 8 and the dissolution tank 1 is a prior art in the field of reaction tanks, so it is not described in detail. A motor 14 is installed on the inner wall of the dissolution tank 1 through a mounting assembly, and a second gear 15 and a first gear 13 are respectively provided on the output shaft of the motor 14 and the discharge pipe 12. The teeth and meshing details of the second gear 15 and the first gear 13 are not shown in the figure. In fact, the second gear 15 and the first gear 13 are meshed with each other.

[0023] An observation mechanism for observing the dissolution of liquid is disposed on the side wall of the dissolution tank 1 . The observation mechanism includes two observation ports 2 opened on the side wall of the dissolution tank 1 . An observation window 3 is disposed in the observation port 2 .

[0024] In the utility model, a transverse plate 16 is fixedly connected to the inner wall of the dissolution tank 1 , and the discharge pipe 6 is rotatably connected to the transverse plate 16 .

[0025] In the utility model, an inclined surface is provided at the bottom of the dissolution tank 1, and a drain valve is provided on the drain pipe 9 to facilitate the discharge of waste water.

[0026] In the utility model, a mounting plate 17 is fixedly connected to the side wall of the dissolution tank 1, an electric slider 18 is provided on the mounting plate 17, and a material guide plate 19 is fixedly connected to the upper end of the electric slider 18, providing a ready-made material guide mechanism, and the operator does not need to use other tools to receive the material.

[0027] In the present invention, the mounting plate 17 is an electric slide rail, so that the guide plate 19 can automatically move into the dissolution tank 1, thereby improving the automation of the device. The cross section of the guide plate 19 is C-shaped.

[0028] When in use, the pesticide intermediate liquid is injected into the dissolution tank 1 from the liquid inlet pipe, and the dissolution agent is poured from the feed hopper. Crystals are precipitated on the water storage bucket 10. After a period of time, the dissolution is completed and the electric valve 11 is opened, and the solution enters the filter screen cylinder 4. The motor 14 is started, and the motor 14 drives the filter screen cylinder 4 to rotate through the mesh of the second gear 15 and the first gear 13. The liquid in the solution passes through the mesh of the filter screen cylinder 4 under the action of centrifugal force and enters the dissolution tank 1, and the crystals remain in the filter screen cylinder 4. After a period of time, only the crystals are left in the filter screen cylinder 4, and the liquid is discharged from the drain pipe 9. The sealing plate 8 can be opened, the sealing cover 5 can be opened, and the crystals discharged from the discharge pipe 6 can be taken out with tools. It is worth noting that when the discharge pipe 6 stops at the side of the discharge port 7 after the rotation;

[0029] For receiving the crystal, a ready-made tool, namely a guide plate 19 , can be used. The guide plate 19 is extended below the discharge pipe 6 . The guide plate 19 receives the crystal so that the crystal rolls out along the inclined surface of the guide plate 19 .

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and practical concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dissolution crystallization device for pesticide intermediates, comprising a dissolution tank (1), characterized in that: The dissolution tank (1) is provided with a liquid inlet pipe and a feeding hopper, the inner wall of the dissolution tank (1) is fixedly connected with a water storage hopper (10), and a discharge pipe (12) is rotatably connected below the water storage hopper (10). A separation mechanism for separating crystals and liquid is provided in the dissolution tank (1), and the separation mechanism comprises a filter screen cylinder (4) rotatably connected to the side wall of the discharge pipe (12), a discharge pipe (6) is connected below the filter screen cylinder (4), and a sealing cover (5) is provided on the discharge pipe (6). The dissolution tank (1) is provided with a liquid inlet pipe (10), and a liquid inlet pipe (10) is provided with a liquid inlet pipe (10). 1) is connected to a drain pipe (9) at the bottom, the water storage hopper (10) is provided with an electric valve (11), the side wall of the dissolution tank (1) is provided with a discharge port (7), a sealing plate (8) is provided in the discharge port (7), a motor (14) is installed on the inner wall of the dissolution tank (1) through a mounting assembly, a second gear (15) and a first gear (13) are provided on the output shaft of the motor (14) and the discharge pipe (12) respectively, and an observation mechanism for observing the dissolution of liquid is provided on the side wall of the dissolution tank (1).

2. The dissolution crystallization device for a pesticide intermediate according to claim 1, characterized in that: The observation mechanism comprises two observation ports (2) opened on the side wall of the dissolution tank (1), and an observation window (3) is provided in the observation port (2).

3. The dissolution crystallization device for a pesticide intermediate according to claim 2, characterized in that: A transverse plate (16) is fixedly connected to the inner wall of the dissolution tank (1), and the discharge pipe (6) is rotatably connected to the transverse plate (16).

4. The dissolution crystallization device for a pesticide intermediate according to claim 3, characterized in that: The bottom of the dissolution tank (1) is provided with an inclined surface, and the drainage pipe (9) is provided with a drainage valve.

5. The dissolution crystallization device for a pesticide intermediate according to claim 4, characterized in that: The side wall of the dissolution tank (1) is fixedly connected to a mounting plate (17), an electric slider (18) is provided on the mounting plate (17), and a material guide plate (19) is fixedly connected to the upper end of the electric slider (18).

6. The dissolution crystallization device for pesticide intermediates according to claim 5, characterized in that: The mounting plate (17) is an electric slide rail, and the material guide plate (19) has a C-shaped cross section.

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