Rapid crystallization and purification device for chloroacetic acid

Abstract

The utility model provides a quick crystallization and purification device for chloroacetic acid, which belongs to the field of chemical production and comprises a shell, the shell is communicated with two injection pipes and a discharge pipe, a cooling component is arranged on the shell, a plurality of connecting blocks are fixedly connected to the side wall of the shell, upright posts are fixedly connected to the connecting blocks, and the upright posts are fixedly connected to the injection pipes and the discharge pipe. A heating assembly is arranged on the shell; a stirring assembly; the stirring assembly comprises four guide rods fixedly connected to the upper end face of the shell, the four guide rods are jointly and fixedly connected with a sliding plate, the four guide rods are arranged in a one-to-one correspondence mode, and each pair of correspondingly arranged guide rods are jointly and fixedly connected with a connecting plate. According to the utility model, the crystallization process can be quickly carried out in the shell, the practicability of the device is improved, and meanwhile, the arranged scraping plate and the stirring roller can be used for scraping crystals on the side wall of the shell, so that a user can conveniently clean the residual crystals in the shell, and the workload of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production, in particular to a rapid crystallization and purification device for chloroacetic acid. Background Art

[0002] Chloroacetic acid is an important chemical raw material and intermediate with broad development prospects. Before crystallization and purification, dichloromethane and chlorinated liquid need to be poured into a reaction kettle and stirred at a certain temperature to make them fully mixed, and then a rapid crystallization and purification device is used to carry out crystallization and purification on it.

[0003] The existing rapid crystallization and purification devices for chloroacetic acid generally put raw materials into the device in sequence, stir them and then discharge them from the device, and place the saturated solution in the external environment for natural cooling and crystal precipitation. This not only has a cumbersome operation process, but also has a slow cooling rate of the solution and low purification efficiency. Content of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a rapid crystallization and purification device for chloroacetic acid.

[0005] An embodiment of the utility model provides a rapid crystallization and purification device for chloroacetic acid, including:

[0006] A housing, the housing is communicated with two injection pipes and a discharge pipe, a cooling component is arranged on the housing, a plurality of connecting blocks are fixedly connected to the side wall of the housing, columns are fixedly connected to the plurality of connecting blocks, and a heating component is arranged on the housing;

[0007] A stirring component; the stirring component includes four guide rods fixedly connected to the upper end face of the housing, a sliding plate is fixedly connected to the four guide rods together, the four guide rods are arranged in one-to-one correspondence, connecting plates are fixedly connected to each pair of corresponding guide rods together, two threaded rods are rotatably connected to the upper end face of the housing, the two threaded rods are respectively rotatably connected to the two connecting plates, two support plates are fixedly connected to the upper end face of the housing, a worm is rotatably connected to the two support plates together, worm wheels are fixedly connected to the two threaded rods, the worm and the two worm wheels are arranged in a matching manner, the two threaded rods are both threadedly penetrated through the sliding plate, a rotating machine is fixedly connected to the upper end face of the sliding plate, an output end of the rotating machine rotatably penetrates through the sliding plate and is fixedly connected to a rotating roller, the rotating roller rotatably penetrates through the housing, a servo motor is fixedly connected to one of the connecting plates, an output end of the servo motor is arranged on the worm, a plurality of stirring rollers are fixedly connected to the rotating roller, and a scraping plate is fixedly connected to the rotating roller.

[0008] Further, the cooling assembly comprises a cooling cavity arranged on the shell, a cooling pipe is arranged in the cooling cavity, the water outlet of the cooling pipe is connected to a water tank, a refrigeration component is arranged on the water tank, a water pump is arranged on one side wall of the water tank, the water suction end of the water pump is connected to the water tank, and the water outlet end of the water pump is connected to the water inlet end of the cooling pipe.

[0009] Furthermore, the heating assembly comprises a heating chamber arranged on the shell, and a heating plate and a plurality of heating rods are arranged in the heating chamber.

[0010] Furthermore, the lower end surfaces of the plurality of columns are fixedly connected with cushion blocks.

[0011] Furthermore, the scraper is arranged in an arc shape.

[0012] Furthermore, the cooling pipe is made of metal.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. Inject the chloroacetic acid raw material into the shell, then the heating rod and the heating plate start working to heat the raw material, and at the same time the rotating machine starts working to stir the raw material in the shell, accelerating the rapid mixing of the chloroacetic acid raw material, so that the raw material dissolves in the hot solvent and quickly reaches a saturated state. When the solute and the solvent are fully mixed, stop heating and stirring. At this time, the solution temperature will gradually decrease, so that the solubility of the solution decreases, and the solution becomes supersaturated, so that the purified substance precipitates crystals from the supersaturated solution, and the purified substance precipitates from it, while all or most of the impurities remain in the solution, thereby achieving the purpose of purification. After that, the material is discharged through the discharge pipe. At this time, the servo motor starts working to make the scraper descend, and at the same time the rotating machine starts working. The scraper and the stirring roller can scrape the crystals on the side wall of the shell, which is convenient for users to clean the residual crystals in the shell.

[0015] 2. The water pump starts working, transporting the cooling water in the water tank to the cooling pipe to cool the solution in the shell, speeding up the cooling rate of the solution in the shell, so that the crystallization process can be completed quickly in the shell, improving the purification efficiency. Brief Description of the Figures

[0016] Figure 1 It is a structural stereoscopic diagram of a chloroacetic acid rapid crystallization and purification device described in an embodiment of the utility model.

[0017] Figure 2 It is a three-dimensional top view of the structure of a chloroacetic acid rapid crystallization and purification device described in the embodiment of the utility model.

[0018] Figure 3This is a three-dimensional cross-sectional view of a rapid crystallization and purification device for chloroacetic acid described in the embodiments of the present utility model.

[0019] In the above-mentioned drawings: 1 housing, 2 injection pipe, 3 column, 4 guide rod, 5 sliding plate, 6 threaded rod, 7 worm, 8 worm gear, 9 rotating machine, 10 stirring roller, 11 scraper, 12 cooling chamber, 13 cooling pipe, 14 water tank, 15 water pump, 16 heating chamber, 17 heating rod, 18 cushion block. Specific implementation mode

[0020] The technical solutions in the embodiments of the present utility model will be further described below with reference to the drawings and embodiments.

[0021] As Figures 1-3 shown, the embodiments of the present utility model propose a rapid crystallization and purification device for chloroacetic acid, including:

[0022] A housing 1, the housing 1 is communicated with two injection pipes 2 and a discharge pipe, a cooling assembly is provided on the housing 1, a plurality of connecting blocks are fixedly connected to the side wall of the housing 1, a plurality of columns 3 are fixedly connected to the plurality of connecting blocks, and a cushion block 18 is fixedly connected to the lower end surfaces of the plurality of columns 3, which improves the stability of the device. A heating assembly is provided on the housing 1; a stirring assembly; the stirring assembly includes four guide rods 4 fixedly connected to the upper end surface of the housing 1, a sliding plate 5 is fixedly connected to the four guide rods 4 together, the four guide rods 4 are arranged in one-to-one correspondence, and a connecting plate is fixedly connected to each pair of corresponding guide rods 4 together. Two threaded rods 6 are rotatably connected to the upper end surface of the housing 1, and the two threaded rods 6 are respectively rotatably connected to the two connecting plates;

[0023] Two support plates are fixedly connected to the upper end surface of the housing 1, a worm 7 is rotatably connected to the two support plates together, worm wheels 8 are fixedly connected to the two threaded rods 6, the worm 7 and the two worm wheels 8 are arranged in a matching manner, the two threaded rods 6 both penetrate through the sliding plate 5 in a threaded manner, a rotating machine 9 is fixedly connected to the upper end surface of the sliding plate 5, the output end of the rotating machine 9 rotates through the sliding plate 5 and is fixedly connected to a rotating roller, the rotating roller rotates through the housing 1, a servo motor is fixedly connected to one of the connecting plates, the output end of the servo motor is arranged on the worm 7, a plurality of stirring rollers 10 are fixedly connected to the rotating roller, and a scraper 11 is fixedly connected to the rotating roller. The scraper 11 is arc-shaped, which is convenient for scraping the crystals on the inner wall of the housing 1;

[0024] Cooling assembly; the cooling assembly includes a cooling chamber 12 provided on the housing 1. A cooling pipe 13 is provided in the cooling chamber 12. The water outlet end of the cooling pipe 13 is communicated with a water tank 14. A refrigeration member is provided on the water tank 14. The refrigeration member is a prior art and can cool the water in the water tank 14, which will not be elaborated here. A water pump 15 is provided on one side wall of the water tank 14. The water suction end of the water pump 15 is communicated with the water tank 14, and the water outlet end of the water pump 15 is communicated with the water inlet end of the cooling pipe 13. The cooling pipe 13 is made of metal material, with better heat conduction efficiency, which improves the cooling rate of the solution in the housing 1. The heating assembly includes a heating chamber 16 provided on the housing 1. A heating plate and a plurality of heating rods 17 are provided in the heating chamber 16. The heating plate and the heating rods 17 are prior arts and will not be elaborated here.

[0025] The detailed working process of the present utility model is as follows:

[0026] The user places the device in a designated workplace. First, inject the chloroacetic acid raw material into the housing 1 through the injection pipe 2. Then, the heating rods 17 and the heating plate start to work to heat the raw material in the housing 1. At the same time, the rotating machine 9 starts to work. The output end of the rotating machine 9 drives the rotating roller to rotate. The stirring roller 10 on the rotating roller stirs the raw material in the housing 1 to accelerate the rapid mixing of the chloroacetic acid raw material, so that the raw material is dissolved in the hot solvent, and the solution quickly reaches a saturated state. When the solute and the solvent are fully mixed, stop heating and stirring at this time. At the same time, the water pump 15 starts to work. The water pump 15 transports the cooling water in the water tank 14 into the cooling pipe 13. The cooling water in the cooling pipe 13 will cool the solution in the housing 1, accelerating the cooling rate of the solution in the housing 1, enabling the crystallization process to be quickly completed in the housing 1, improving the purification efficiency. At this time, the temperature of the solution in the housing 1 will gradually decrease, reducing the solubility of the solution, and the solution becomes supersaturated, so that the substance to be purified precipitates crystals from the supersaturated solution, and the substance to be purified precipitates therefrom, while allowing all or most of the impurities to remain in the solution, thus achieving the purpose of purification. Then, the material is discharged from the housing 1 through the discharge pipe. Then, the servo motor starts to work. The output end of the servo motor drives the worm 7 to rotate. The worm 7 drives the worm wheel 8 to rotate. The threaded rod 6 connected to the worm wheel 8 starts to rotate. The sliding plate 5 provided on the threaded rod 6 starts to descend, driving the rotating machine 9 and the rotating roller to descend, so that the scraper 11 moves downward. When the scraper 11 moves to the designated position, the rotating machine 9 starts to work at this time, so that the scraper 11 and the stirring roller 10 scrape the crystals on the side wall of the housing 1, facilitating the user to clean the residual crystals in the housing 1 and reducing the workload of the staff.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.

Claims

1. A chloroacetic acid rapid crystallization purification device, characterized in that, include: A shell (1), the shell (1) being connected to two injection pipes (2) and a discharge pipe, the shell (1) being provided with a cooling assembly, a plurality of connection blocks being fixedly connected to the side wall of the shell (1), a plurality of connection blocks being fixedly connected to columns (3), and a heating assembly being provided on the shell (1); A stirring assembly; the stirring assembly comprises four guide rods (4) fixedly connected to the upper end surface of the shell (1), the four guide rods (4) are commonly fixedly connected to a sliding plate (5), the four guide rods (4) are arranged in a one-to-one correspondence, each pair of the correspondingly arranged guide rods (4) are commonly fixedly connected to a connecting plate, the upper end surface of the shell (1) is rotatably connected to two threaded rods (6), the two threaded rods (6) are respectively rotatably connected to two connecting plates, the upper end surface of the shell (1) is fixedly connected to two support plates, the two support plates are commonly rotatably connected to a worm (7), the two threaded rods (6) are Both are fixedly connected with a worm gear (8), the worm (7) and the two worm gears (8) are matched, the two threaded rods (6) are threadedly penetrated through the sliding plate (5), the upper end surface of the sliding plate (5) is fixedly connected with a rotating machine (9), the output end of the rotating machine (9) rotates through the sliding plate (5) and is fixedly connected with a rotating roller, the rotating roller rotates through the housing (1), one of the connecting plates is fixedly connected with a servo motor, the output end of the servo motor is arranged on the worm (7), a plurality of stirring rollers (10) are fixedly connected to the rotating roller, and a scraper (11) is fixedly connected to the rotating roller.

2. A chloroacetic acid rapid crystallization purification device according to claim 1, characterized in that, in: The cooling assembly comprises a cooling chamber (12) arranged on a housing (1), a cooling pipe (13) being arranged in the cooling chamber (12), a water outlet end of the cooling pipe (13) being connected to a water tank (14), a refrigeration component being arranged on the water tank (14), a water pump (15) being arranged on a side wall of the water tank (14), a water suction end of the water pump (15) being connected to the water tank (14), and a water outlet end of the water pump (15) being connected to a water inlet end of the cooling pipe (13).

3. A chloroacetic acid rapid crystallization purification device according to claim 1, characterized in that, in: The heating component comprises a heating chamber (16) arranged on a housing (1), wherein a heating plate and a plurality of heating rods (17) are arranged in the heating chamber (16).

4. A chloroacetic acid rapid crystallization purification device according to claim 1, characterized in that, in: The lower end surfaces of the plurality of upright posts (3) are all fixedly connected with cushion blocks (18).

5. A chloroacetic acid rapid crystallization purification device according to claim 1, characterized in that, in: The scraper (11) is arranged in an arc shape.

6. A chloroacetic acid rapid crystallization purification device according to claim 2, characterized in that, in: The cooling pipe (13) is made of metal.

Images