A device and method for indoxacarb product crystallization

Abstract

The application discloses an indoxacarb finished product crystallization method, which comprises a crystallization cylinder mechanism, a lifting cover plate mechanism, a crystallization plate mechanism, a driving mechanism and a collecting disc. When used, a mixed solution of indoxacarb and an organic solvent is poured into a crystallization chamber, three to five parts by mass of indoxacarb finished product is added as a crystal seed, a pipeline valve on a feeding pipe is opened, the feeding pipe is connected with a refrigerant delivery pipe, a pipeline pump is used to deliver the refrigerant into a distribution part and then into the crystallization plate mechanism through distribution holes one and two, pump one and pump two are started to circulate the refrigerant between a circulating refrigeration pipe and a distribution channel of the distribution part, so that the temperature of the surface of the crystallization plate shell is rapidly reduced, indoxacarb crystals are precipitated on the surface of the crystallization plate shell, the temperature of the surface of the crystallization plate shell is rapidly reduced through accurate control, and the efficiency of the precipitation of the crystals is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of insecticides, in particular to an indoxacarb finished product crystallization device and method. BACKGROUND

[0002] Indoxacarb is a highly toxic, low-residual pesticide, which has strong toxicity to pests, but is safe to animals. It is a new type of broad-spectrum, highly efficient insecticide, which is used as a tool for controlling pests in farmland and horticultural crops, as well as in lawns, gardens and indoor plants in homes and public places. Indoxacarb exerts its effect by affecting the chemical transmitters (neurotransmitters) in the nervous system of insects.

[0003] In the current synthesis process of indoxacarb, in order to improve the activity of indoxacarb, it needs to be purified when indoxacarb is configured, so as to ensure the effectiveness and safety of indoxacarb. Generally, indoxacarb is dissolved in an organic solvent, and then indoxacarb is precipitated from the organic solvent. In the production of indoxacarb crystals, different crystal forms can be obtained in different solvents or at different temperatures of the same solvent. The crystal transformation process of indoxacarb in the solution is not only controlled by thermodynamics, but also affected by kinetics. The existing indoxacarb crystallization production device cannot accurately control the temperature of a specific area in the crystallization tank, so that the precipitation position of the crystals is not fixed, and it is not convenient to collect the crystals. In the later stage of the crystallization process, due to the saturation of the crystals, the precipitation of the crystals becomes more difficult, which is not conducive to improving the crystallization efficiency. SUMMARY

[0004] The purpose of the present application is to provide an indoxacarb finished product crystallization device and method to solve the technical problem that the temperature of a specific area in the crystallization tank cannot be accurately controlled in the prior art, so that the precipitation position of the crystals is not fixed, and it is not convenient to collect the crystals.

[0005] The technical problem solved by the present application can be achieved by the following technical solutions:

[0006] An indoxacarb finished product crystallization method, comprising: step one: lifting the lifting cover plate mechanism on the crystallization cylinder mechanism through the driving mechanism, pouring the mixed solution of indoxacarb and organic solvent into the crystallization chamber, adding 0.3-0.5% of indoxacarb finished product as crystal seeds, and then lowering the lifting cover plate mechanism on the crystallization cylinder mechanism through the driving mechanism.

[0007] Step two: open the pipeline valve on the feeding pipe, connect the feeding pipe with the refrigerant delivery pipe, deliver the refrigerant into the distribution piece through the pipeline pump, deliver the refrigerant into the crystallization plate mechanism through the distribution holes one and two, and close the pipeline valve on the feeding pipe.

[0008] Step three: start pump machine one and pump machine two to circulate the refrigerant between the circulating refrigeration pipe and the distribution channel of the distribution part, so as to quickly reduce the temperature of the surface of the crystal plate shell, so that the indoxacarb crystal is precipitated on the surface of the crystal plate shell.

[0009] Step four: after the crystallization, the lifting cover plate mechanism is lifted by the driving mechanism, so that the collection disc is higher than the surface of the solution, and the crystallization on the collection disc is collected.

[0010] A device for indoxacarb product crystallization method, comprising: a crystallization cylinder mechanism, comprising a crystallization cylinder main body, a crystallization cavity is formed in the crystallization cylinder main body, and crystallization cylinder side plates are symmetrically distributed and fixedly connected on the side end face of the crystallization cylinder main body; a screw rod is rotatably connected to the crystallization cylinder side plate;

[0011] A lifting cover plate mechanism, comprising a cover plate main body, cover plate side plates are symmetrically distributed and fixedly connected on the side end face of the cover plate main body, threaded sleeves are embedded and fixedly connected through the end faces of the cover plate side plates, the threaded sleeves on both sides are respectively threadedly connected with the screw rods on both sides, a feed pipe is embedded and fixedly connected through the cover plate main body, a distribution part is fixedly connected to the lower end of the feed pipe, a distribution channel is formed in the distribution part, the distribution channel is in communication with the feed pipe, distribution holes one and two are annularly and uniformly distributed on the side end face of the distribution part, and the distribution channel is in communication with the distribution holes one and two;

[0012] A crystallization plate mechanism, comprising a crystallization plate shell, an inner cavity is formed in the crystallization plate shell, a circulating refrigeration pipe is arranged in the inner cavity, circulating connection pipes one and two are embedded and fixedly connected through the crystallization plate shell, one end of the circulating refrigeration pipe is in communication with the circulating connection pipe one, the other end of the circulating refrigeration pipe is in communication with the circulating connection pipe two, the circulating connection pipe one is in communication with the distribution channel through the distribution hole one, and the circulating connection pipe two is in communication with the distribution channel through the distribution hole two;

[0013] A driving mechanism, which is fixedly connected to the bottom surface of the crystallization cylinder main body, is used to drive the screw rods on both sides of the crystallization cylinder main body to rotate synchronously.

[0014] As a further scheme of the present application, side supports are fixedly connected to both sides of the crystallization cylinder side plate, screw rod stabilizing plates are fixedly connected to the upper ends of the side supports, a stabilizing bearing one is embedded and fixedly connected through the crystallization cylinder side plate, the outer ring of the stabilizing bearing one is fixedly connected with the crystallization cylinder side plate, the screw rod is sleeved and fixedly connected to the inner ring of the stabilizing bearing one, and a stabilizing bearing two is embedded through the screw rod stabilizing plate.

[0015] As a further scheme of the present application, the screw rod and the threaded sleeve are both provided with two.

[0016] As a further solution of the present invention: the crystallization plate mechanism is evenly distributed in an annular shape on the side end surface of the material dividing piece, the circulation connecting pipes 1 of several crystallization plate mechanisms correspond one-to-one with the annular evenly distributed material dividing holes, and the circulation connecting pipes 2 of several crystallization plate mechanisms correspond one-to-one with the annular evenly distributed material dividing holes.

[0017] As a further solution of the present invention: a collecting tray is fixedly connected to the material dividing member, and the collecting tray is arranged below the annularly evenly distributed crystallization plate mechanism, and a through hole is opened through the collecting tray.

[0018] As a further solution of the present invention: the driving mechanism includes a mechanism fixing frame, the mechanism fixing frame is fixedly connected to the bottom surface of the crystallization cylinder body, one side of the mechanism fixing frame is fixedly connected to a mechanism fixing plate 1, the other side of the mechanism fixing frame is fixedly connected to a mechanism fixing plate 2, a driving bearing 1 is embedded through and fixedly connected to the mechanism fixing plate 1, a driven shaft is provided on the mechanism fixing plate 1, and the driven shaft is rotatably connected to the mechanism fixing plate 1 through the driving bearing 1, a driving bearing 2 is embedded through and fixedly connected to the mechanism fixing plate 2, a driving shaft is provided on the mechanism fixing plate 2, and the driving shaft is rotatably provided on the mechanism fixing plate 2 through the driving bearing 2.

[0019] As a further solution of the present invention: a driving wheel is sleeved through the driving shaft and is coaxially fixedly connected thereto, a driven wheel is sleeved through the driven shaft and is coaxially fixedly connected thereto, a transmission belt is provided between the driving wheel and the driven wheel, a motor is fixedly connected to the second mechanism fixing plate, and a driving end of the motor is coaxially fixedly connected to the driving shaft.

[0020] Beneficial effects of the present invention:

[0021] 1. When the present invention is used, the lifting cover mechanism on the crystallization cylinder mechanism is lifted by the driving mechanism, and the mixed solution of indoxacarb and the organic solvent is poured into the crystallization chamber, and 3 / 1000 to 5 / 1000 of the mass of the finished indoxacarb of the reaction solution is added as a seed crystal. Then, the lifting cover mechanism on the crystallization cylinder mechanism is lowered and covered by the driving mechanism, the pipeline valve on the feed pipe is opened, and the feed pipe and the refrigerant delivery pipe are connected. The refrigerant is delivered to the material distribution member through the pipeline pump and the refrigerant is delivered to the crystallization plate mechanism through the material distribution hole 1 and the material distribution hole 2. The pipeline valve on the feed pipe is closed, and the pump 1 and the pump 2 are started to The refrigerant circulates between the circulating refrigeration pipe and the distributing channel of the distributing member, thereby rapidly reducing the temperature of the outer shell surface of the crystallization plate, causing indoxacarb crystals to precipitate on the outer shell surface of the crystallization plate. At the same time, a collecting tray is provided below the annularly evenly distributed crystallization plate mechanism, and a through hole is provided on the collecting tray. By precisely controlling the temperature of the outer shell surface of the crystallization plate, the outer shell surface temperature of the crystallization plate is rapidly reduced, which is conducive to improving the efficiency of crystallization precipitation. After the crystals are precipitated, the lifting cover mechanism is lifted by the driving mechanism, so that the collecting tray is higher than the solution surface, which is convenient for collecting the crystals on the collecting tray.

[0022] 2、The lifting cover plate mechanism can be driven to lift by the driving mechanism, the driving mechanism drives the lifting cover plate mechanism to lift by rotating the screw rods on both sides of the crystallization cylinder main body, a driven shaft is arranged on the first mechanism fixing plate, a driving shaft is arranged on the second mechanism fixing plate, a driving wheel is coaxially fixedly connected to the driving shaft and penetrates the driving shaft, a driven wheel is coaxially fixedly connected to the driven shaft and penetrates the driven shaft, a transmission belt is arranged between the driving wheel and the driven wheel, the transmission belt can drive the driving shaft and the driven shaft to rotate synchronously, so that the screw rods on both sides of the crystallization cylinder main body rotate synchronously, the stability of the lifting cover plate mechanism during lifting can be ensured, the disturbance of the crystallization liquid during lifting of the lifting cover plate mechanism can be effectively reduced, and small crystal nuclei can be prevented from floating and falling below the collection disc during lifting. BRIEF DESCRIPTION OF DRAWINGS

[0023] The application will be further described below with reference to the drawings.

[0024] Figure 1 is a schematic diagram of the three-dimensional structure of the application Figure 1 ;

[0025] Figure 2 is a schematic diagram of the connection relationship between the crystallization cylinder mechanism and the driving mechanism of the application

[0026] Figure 3 is a schematic diagram of the three-dimensional structure of the lifting cover plate mechanism of the application

[0027] Figure 4 is a schematic diagram of the connection relationship between the lifting cover plate mechanism, the crystallization plate mechanism and the collection disc of the application

[0028] Figure 5 is a schematic diagram of the three-dimensional structure of the crystallization plate mechanism of the application

[0029] Figure 6 is a schematic diagram of part of the crystallization plate mechanism of the application

[0030] In the figure: 1, crystallization cylinder mechanism; 11, crystallization cylinder main body; 12, crystallization chamber; 13, crystallization cylinder side plate; 14, screw rod; 15, side support; 16, screw rod stabilizing plate; 2, lifting cover plate mechanism; 21, cover plate main body; 22, cover plate side plate; 23, threaded sleeve; 24, feed pipe; 25, distribution piece; 26, distribution hole one; 27, distribution hole two; 3, crystallization plate mechanism; 31, crystallization plate shell; 32, shell inner cavity; 33, circulation connection pipe one; 34, circulation connection pipe two; 35, circulation refrigeration pipe; 36, pump one; 37, pump two; 4, driving mechanism; 41, mechanism fixing frame; 42, mechanism fixing plate one; 43, mechanism fixing plate two; 44, motor; 45, driving bearing one; 46, driving bearing two; 47, driving wheel; 48, driven wheel; 49, transmission belt; 410, driven shaft; 411, driving shaft; 5, collection disc; 6, through hole. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0032] As Figures 1-6As shown, an indoxacarb finished product crystallization device, including: crystallization cylinder mechanism 1, lifting cover plate mechanism 2, crystallization plate mechanism 3 and driving mechanism 4, the crystallization cylinder mechanism 1 includes the crystallization cylinder main body 11, the crystallization cavity 12 is opened on the crystallization cylinder main body 11, the crystallization cylinder side plate 13 is fixedly connected and is symmetrically distributed on the side end face of the crystallization cylinder main body 11, the screw rod 14 is rotatably connected on the crystallization cylinder side plate 13, the lifting cover plate mechanism 2 includes the cover plate main body 21, the cover plate side plate 22 is fixedly connected and is symmetrically distributed on the side end face of the cover plate main body 21, the threaded sleeve 23 is fixedly connected and is embedded through on the end face of the cover plate side plate 22, the threaded sleeve 23 on both sides is respectively screwed with the screw rod 14 on both sides, the feed pipe 24 is fixedly connected and is embedded through on the cover plate main body 21, the distribution piece 25 is fixedly connected on the lower end of the feed pipe 24, the distribution passage is opened in the distribution piece 25, the distribution passage is communicated with the feed pipe 24, the distribution hole one 26 and the distribution hole two 27 are annularly and evenly distributed on the side end face of the distribution piece 25 respectively, the distribution passage is communicated with the distribution hole one 26 and the distribution hole two 27 respectively, the crystallization plate mechanism 3 includes the crystallization plate shell 31, the shell inner cavity 32 is opened in the crystallization plate shell 31, the circulating refrigeration pipe 35 is arranged in the shell inner cavity 32, the circulating connection pipe one 33 and the circulating connection pipe two 34 are fixedly connected and are embedded through on the crystallization plate shell 31 respectively, one end of the circulating refrigeration pipe 35 is communicated with the circulating connection pipe one 33, the other end of the circulating refrigeration pipe 35 is communicated with the circulating connection pipe two 34, the circulating connection pipe one 33 is communicated with the distribution passage through the distribution hole one 26, the circulating connection pipe two 34 is communicated with the distribution passage through the distribution hole two 27, the driving mechanism 4 is fixedly connected on the bottom surface of the crystallization cylinder main body 11, the driving mechanism 4 is used to drive the screw rod 14 on both sides of the crystallization cylinder main body 11 to rotate synchronously.

[0033] The side bracket 15 is fixedly connected on both sides of the crystallization cylinder side plate 13, the screw rod stabilizing plate 16 is fixedly connected on the upper end of the side bracket 15, the stable bearing one is embedded through and fixedly connected on the crystallization cylinder side plate 13, the outer ring of the stable bearing one is fixedly connected with the crystallization cylinder side plate 13, the screw rod 14 is sleeved and fixedly connected on the inner ring of the stable bearing one, the stable bearing two is embedded through on the screw rod stabilizing plate 16, the screw rod 14 is rotatably connected with the screw rod stabilizing plate 16 through the stable bearing two.

[0034] In some specific embodiments, the screw rod 14 and the threaded sleeve 23 are both provided with two.

[0035] In some specific embodiments, the crystallization plate mechanism 3 is annularly and evenly distributed on the side end face of the distribution piece 25, the circulating connection pipe one 33 of the several crystallization plate mechanisms 3 corresponds to the annularly and evenly distributed distribution hole one 26 one by one, the circulating connection pipe two 34 of the several crystallization plate mechanisms 3 corresponds to the annularly and evenly distributed distribution hole two 27 one by one.

[0036] The collecting disc 5 is fixedly connected to the distribution member 25 and is arranged below the crystallization plate mechanism 3.

[0037] The driving mechanism 4 comprises a mechanism fixing frame 41 fixedly connected to the bottom surface of the crystallization cylinder body 11, a mechanism fixing plate one 42 fixedly connected to one side of the mechanism fixing frame 41, and a mechanism fixing plate two 43 fixedly connected to the other side of the mechanism fixing frame 41. The driving bearing one 45 is embedded and fixedly connected to the mechanism fixing plate one 42, and the driven shaft 410 is arranged on the mechanism fixing plate one 42 and rotationally connected to the mechanism fixing plate one 42 through the driving bearing one 45. The driving bearing two 46 is embedded and fixedly connected to the mechanism fixing plate two 43, and the driving shaft 411 is arranged on the mechanism fixing plate two 43 and rotationally arranged on the mechanism fixing plate two 43 through the driving bearing two 46. The driving shaft 411 is coaxially and fixedly connected to the driving pulley 47 embedded in the driving shaft 411. The driven shaft 410 is coaxially and fixedly connected to the driven pulley 48 embedded in the driven shaft 410. The transmission belt 49 is arranged between the driving pulley 47 and the driven pulley 48. The motor 44 is fixedly connected to the mechanism fixing plate two 43, and the driving end of the motor 44 is coaxially and fixedly connected to the driving shaft 411.

[0038] In some specific embodiments, the feeding pipe 24 is respectively provided with a pipe valve and a pipe pump.

[0039] An indoxacarb finished product crystallization method comprises the following steps:

[0040] Step one: the lifting cover plate mechanism 2 on the crystallization cylinder mechanism 1 is lifted by the driving mechanism 4, the mixed solution of indoxacarb and organic solvent is poured into the crystallization chamber 12, and the reaction liquid containing three to five parts by mass of indoxacarb finished product as crystal seeds is added, and then the lifting cover plate mechanism 2 on the crystallization cylinder mechanism 1 is lowered by the driving mechanism 4.

[0041] Step two: the pipe valve on the feeding pipe 24 is opened, the feeding pipe 24 is connected to the refrigerant delivery pipe, the refrigerant is delivered into the distribution member 25 by the pipe pump, the refrigerant is delivered into the crystallization plate mechanism 3 through the distribution holes one 26 and the distribution holes two 27, and then the pipe valve on the feeding pipe 24 is closed.

[0042] Step three: the pump one 36 and the pump two 37 are started to circulate the refrigerant between the circulating refrigeration pipe 35 and the distribution channel of the distribution member 25, so as to rapidly reduce the temperature of the surface of the crystallization plate shell 31, and make the indoxacarb crystals precipitate on the surface of the crystallization plate shell 31.

[0043] Step four: after the crystallization, the lifting cover plate mechanism 2 is lifted by the driving mechanism 4, so that the collecting disc 5 is higher than the surface of the solution, and the crystallization on the collecting disc 5 is collected.

[0044] In order to facilitate the person skilled in the art to understand the working principle of the present application, the working principle of the present application will be briefly described in combination with specific application scenarios:

[0045] In use, the lifting cover plate mechanism 2 on the crystallization cylinder mechanism 1 is lifted by the driving mechanism 4, the mixed solution of indoxacarb and organic solvent is poured into the crystallization chamber 12, and 0.03-0.05% of indoxacarb product is added as a crystal seed, then the lifting cover plate mechanism 2 on the crystallization cylinder mechanism 1 is lowered by the driving mechanism 4, the pipeline valve on the feed pipe 24 is opened, the feed pipe 24 is connected with the refrigerant delivery pipe, the refrigerant is delivered into the distribution piece 25 by the pipeline pump, and then the refrigerant is delivered into the crystallization plate mechanism 3 through the distribution hole one 26 and the distribution hole two 27, the pipeline valve on the feed pipe 24 is closed, and the pump one 36 and the pump two 37 are started to circulate the refrigerant between the circulating refrigeration pipe 35 and the distribution channel of the distribution piece 25, so that the temperature of the surface of the crystallization plate shell 31 is rapidly reduced, and the indoxacarb crystals are precipitated on the surface of the crystallization plate shell 31, and the collection tray 5 is arranged below the annular and uniformly distributed crystallization plate mechanism 3, and the through hole 6 is formed in the collection tray 5, the temperature of the surface of the crystallization plate shell 31 is rapidly reduced by accurately controlling the temperature of the surface of the crystallization plate shell 31, which is beneficial to improving the precipitation efficiency of the crystals, and after the crystals are precipitated, the lifting cover plate mechanism 2 is lifted by the driving mechanism 4, so that the collection tray 5 is higher than the surface of the solution, and the crystals on the collection tray 5 are collected.

[0046] The lifting cover plate mechanism 2 can be driven to lift by the driving mechanism 4, the driving mechanism 4 drives the screw rods 14 on both sides of the crystallization cylinder body 11 to rotate, thereby driving the lifting cover plate mechanism 2 to lift, the driven shaft 410 is arranged on the mechanism fixed plate one 42, the driving shaft 411 is arranged on the mechanism fixed plate two 43, the driving wheel 47 is coaxially and fixedly connected with the driving shaft 411 and is sleeved and connected with the driving shaft 411, the driven wheel 48 is coaxially and fixedly connected with the driven shaft 410 and is sleeved and connected with the driven shaft 410, the transmission belt 49 is arranged between the driving wheel 47 and the driven wheel 48, the driving shaft 411 and the driven shaft 410 can be driven to rotate synchronously by arranging the transmission belt 49, thereby synchronously rotating the screw rods 14 on both sides of the crystallization cylinder body 11, the stability of the lifting cover plate mechanism 2 during lifting can be ensured, the disturbance of the crystallization liquid during lifting of the lifting cover plate mechanism 2 can be effectively reduced, and the smaller crystal nucleus can be prevented from floating and falling into the lower part of the collection tray 5 during lifting.

[0047] The above describes several embodiments of the present application in detail, but the embodiments of the present application are not limited thereto, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the patent scope of the present application.

Claims

1. A device for crystallizing indoxacarb finished product, characterized in that: The invention comprises a crystallization barrel mechanism (1), wherein the crystallization barrel mechanism (1) comprises a crystallization barrel body (11), a crystallization chamber (12) is provided on the crystallization barrel body (11), crystallization barrel side plates (13) are symmetrically distributed and fixedly connected on the side end surface of the crystallization barrel body (11), and screws (14) are rotatably connected to the crystallization barrel side plates (13); The lifting cover mechanism (2) comprises a cover body (21), a cover side plate (22) symmetrically distributed on the side end surface of the cover body (21) and fixedly connected, a threaded sleeve (23) is embedded through and fixedly connected to the end surface of the cover side plate (22), the threaded sleeves (23) on both sides are respectively threadedly connected to the screws (14) on both sides, a feed pipe (24) is embedded through and fixedly connected to the cover body (21), a material distribution piece (25) is fixedly connected to the lower end of the feed pipe (24), a material distribution channel is opened in the material distribution piece (25), and the material distribution channel is connected to the feed pipe (24), and a material distribution hole (26) and a material distribution hole (27) are respectively evenly distributed in an annular manner on the side end surface of the material distribution piece (25), and the material distribution channel is respectively connected to the material distribution hole (26) and the material distribution hole (27); The crystallization plate mechanism (3) comprises a crystallization plate shell (31), a shell inner cavity (32) is provided in the crystallization plate shell (31), a circulating refrigeration pipe (35) is provided in the shell inner cavity (32), a circulating connecting pipe 1 (33) and a circulating connecting pipe 2 (34) are respectively embedded and fixedly connected on the crystallization plate shell (31), one end of the circulating refrigeration pipe (35) is connected to the circulating connecting pipe 1 (33), and the other end of the circulating refrigeration pipe (35) is connected to the circulating connecting pipe 2 (34), the circulating connecting pipe 1 (33) is connected to the distributing channel through the distributing hole 1 (26), and the circulating connecting pipe 2 (34) is connected to the distributing channel through the distributing hole 2 (27); The driving mechanism (4) is fixedly connected to the bottom surface of the crystallizing cylinder body (11), and the driving mechanism (4) is used to drive the screws (14) on both sides of the crystallizing cylinder body (11) to rotate synchronously.

2. The indoxacarb finished product crystallization device according to claim 1, characterized in that: Both sides of the crystallizing cylinder side plate (13) are fixedly connected with side brackets (15), and the upper ends of the side brackets (15) are fixedly connected with screw stabilizing plates (16). A stabilizing bearing 1 is embedded through and fixedly connected to the crystallizing cylinder side plate (13), and the outer ring of the stabilizing bearing 1 is fixedly connected to the crystallizing cylinder side plate (13). The screw (14) is sleeved and fixedly connected to the inner ring of the stabilizing bearing 1. A stabilizing bearing 2 is embedded through and fixedly connected to the screw stabilizing plate (16). The screw (14) is rotatably connected to the screw stabilizing plate (16) through the stabilizing bearing 2.

3. The indoxacarb finished product crystallization device according to claim 1, characterized in that: There are two screw rods (14) and two threaded sleeves (23).

4. The indoxacarb finished product crystallization device according to claim 1, characterized in that: The crystallization plate mechanisms (3) are evenly distributed in an annular manner on the side end surface of the material distribution member (25); the circulation connecting pipes (33) of a plurality of crystallization plate mechanisms (3) correspond one to one with the annular evenly distributed material distribution holes (26); and the circulation connecting pipes (34) of a plurality of crystallization plate mechanisms (3) correspond one to one with the annular evenly distributed material distribution holes (27).

5. The indoxacarb finished product crystallization device according to claim 1, characterized in that: A collecting plate (5) is fixedly connected to the material dividing member (25), and the collecting plate (5) is arranged below the annularly evenly distributed crystallization plate mechanism (3). A through hole (6) is formed through the collecting plate (5).

6. The indoxacarb finished product crystallization device according to claim 1, characterized in that: The driving mechanism (4) includes a mechanism fixing frame (41), which is fixedly connected to the bottom surface of the crystallizing tube body (11), a mechanism fixing plate 1 (42) is fixedly connected to one side of the mechanism fixing frame (41), and a mechanism fixing plate 2 (43) is fixedly connected to the other side of the mechanism fixing frame (41), a driving bearing 1 (45) is embedded through and fixedly connected to the mechanism fixing plate 1 (42), a driven shaft (410) is provided on the mechanism fixing plate 1 (42), and the driven shaft (410) is rotatably connected to the mechanism fixing plate 1 (42) through the driving bearing 1 (45), a driving bearing 2 (46) is embedded through and fixedly connected to the mechanism fixing plate 2 (43), and a driving shaft (411) is provided on the mechanism fixing plate 2 (43), and the driving shaft (411) is rotatably provided on the mechanism fixing plate 2 (43) through the driving bearing 2 (46).

7. The indoxacarb finished product crystallization device according to claim 6, characterized in that: A driving wheel (47) is sleeved through the driving shaft (411) and coaxially fixedly connected thereto; a driven wheel (48) is sleeved through the driven shaft (410) and coaxially fixedly connected thereto; a transmission belt (49) is provided between the driving wheel (47) and the driven wheel (48); a motor (44) is fixedly connected to the second mechanism fixing plate (43); and a driving end of the motor (44) is coaxially fixedly connected to the driving shaft (411).

8. A crystallization method for the indoxacarb finished product crystallization device according to claim 5, characterized in that: include: S1: The lifting cover mechanism (2) on the crystallization cylinder mechanism (1) is lifted by the driving mechanism (4), and a mixed solution of indoxacarb and an organic solvent is poured into the crystallization chamber (12). At the same time, 3 / 1000 to 5 / 1000 of the mass of the finished indoxacarb is added to the reaction solution as a seed crystal. The lifting cover mechanism (2) on the crystallization cylinder mechanism (1) is then lowered and covered by the driving mechanism (4); S2: Open the pipeline valve on the feed pipe (24) and connect the feed pipe (24) with the refrigerant delivery pipe, deliver the refrigerant to the distribution member (25) through the pipeline pump and deliver the refrigerant to the crystallization plate mechanism (3) through the distribution hole 1 (26) and the distribution hole 2 (27), and close the pipeline valve on the feed pipe (24); S3: Start pump 1 (36) and pump 2 (37) to circulate the refrigerant between the circulating refrigeration pipe (35) and the distributing channel of the distributing member (25), thereby rapidly reducing the surface temperature of the crystallization plate housing (31), causing indoxacarb crystals to precipitate on the surface of the crystallization plate housing (31); S4: After the crystals are precipitated, the lifting cover mechanism (2) is lifted by the driving mechanism (4), so that the collecting plate (5) is higher than the surface of the solution, and the crystals on the collecting plate (5) are collected.

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