A cooling device for alkyl lithium raw materials

Abstract

The present invention relates to the technical field of chemical equipment, and specifically to a cooling device for alkyl lithium raw materials, including a base, characterized in that: a discharge seat is fixedly connected to the upper right side of the base, a water cooling cylinder is movably connected to the left side of the top of the discharge seat, a delivery pipe is movably connected to the upper left side of the water cooling cylinder, the bottom end of the delivery pipe is fixedly connected to the upper right side of the base, the top of the delivery pipe is fixedly connected to an air cooling box, the top of the air cooling box is fixedly connected to a vibrating screen box, the top of the vibrating screen box is fixedly connected to a feeding seat, the left side of the vibrating screen box is fixedly connected to a linkage box, the left side of the linkage box is fixedly connected to a control console, a rotating mechanism is provided inside the base, and a vibrating mechanism is provided inside the vibrating screen box. The present invention realizes vibration dispersion and secondary water cooling of powder, and improves the efficiency and stability of the device.

Description

Technical Field

[0001] The invention relates to the technical field of chemical equipment, in particular to a cooling device for alkyl lithium raw materials. Background Art

[0002] Alkyl lithium raw materials refer to alkyl derivatives of lithium, and the general formula of their chemical molecules is RLi, where R is a linear or branched alkyl, cycloalkyl or aryl group. Developed countries began to industrialize the production of alkyl lithium in the 1960s, and it was mainly used in the pharmaceutical field. As an organic synthesis catalyst, domestic research and production of alkyl lithium started late, and only began to enter industrial production in the late 1980s, and was mainly used in the synthetic rubber industry. At present, as an anionic polymerization initiator, alkyl lithium is widely used in pharmaceutical synthesis, petrochemicals, fine chemicals and other fields. Alkyl lithium is often used as a reagent, among which n-butyl lithium solution is the most commonly used. With the continuous growth of the market demand for alkyl lithium, the optimization of the production process of alkyl lithium is also constantly explored.

[0003] The powdered raw materials of alkyl lithium series need to be cooled after being crushed. The existing devices generally use air cooling or water cooling circulation system to cool the powder. The existing technology is similar to a square column vertical cooling device and method for cooling high-temperature powder. The structure of patent number CN112815723A includes a square column tubular main shell, the main shell has an upper cover plate and a lower cover plate; a plurality of rectangular hollow plate-shaped cooling plates are vertically arranged in the main shell, each cooling plate has an upper and lower opening, and forms a material flow cooling channel, and there is a gap between two adjacent cooling plates. A tunnel-shaped cavity air duct is formed, the upper cover plate is provided with a plurality of long strip-shaped feed ports, the lower cover plate is provided with a plurality of long strip-shaped discharge ports, a conical aggregate trough, a hot exhaust gas discharge pipe, an air inlet and an aggregate discharge trough. The invention forms a material flow cooling channel in the hollow plate and a tunnel-shaped cavity air duct between two adjacent cooling plates. The high-temperature powder will not directly contact the cooling airflow, and is particularly suitable for using wet air as cooling air. The equipment is suitable for cooling high-temperature powder, has a simple structure, requires little maintenance, and is environmentally friendly. However, the device still has areas that can be optimized.

[0004] 1. The existing device mainly uses a single cooling mechanism to cool the powder, so that part of the powder reaches a predetermined temperature during the effective cooling process, resulting in part of the powder needing to undergo multiple cooling operations.

[0005] 2. At the same time, some devices mainly discharge the powder into the air cooling box through the output port of the feed seat, making it difficult for some powders to be evenly and effectively distributed inside the cooling box, resulting in some powders agglomerating and quickly passing through the air cooling zone, reducing the working efficiency and practicality of the device. Therefore, a cooling device for alkyl lithium raw materials is urgently needed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a cooling device for alkyl lithium raw materials to solve the problem that the existing device proposed in the above background technology mainly uses a single cooling mechanism to cool the powder material, so that some parts of the powder reach a predetermined temperature during the effective cooling processing stage, thereby causing some powders to need to undergo multiple cooling operations, and at the same time, some devices mainly discharge the powder into the interior of an air cooling box through the output port of a feed seat, making it difficult for some powders to be evenly and effectively distributed inside the cooling box, thereby causing some powders to agglomerate and quickly pass through the air cooling zone.

[0007] To achieve the above object, the present invention provides the following technical solution: a cooling device for alkyl lithium raw materials, comprising:

[0008] The base is characterized in that: a discharge seat is fixedly connected to the upper right side of the base, a water-cooling cylinder is movably connected to the left side of the top of the discharge seat, a delivery pipe is movably connected to the upper left side of the water-cooling cylinder, the bottom end of the delivery pipe is fixedly connected to the upper right side of the base, the top of the delivery pipe is fixedly connected to an air-cooling box, the top of the air-cooling box is fixedly connected to a vibrating screen box, the top of the vibrating screen box is fixedly connected to a feeding seat, the left side of the vibrating screen box is fixedly connected to a linkage box, and the left side of the linkage box is fixedly connected to a control console;

[0009] A rotating mechanism is provided inside the base, and the rotating mechanism includes a motor, and the motor is fixedly connected to the upper part of the inner part of the base. The top of the motor is fixedly connected to a transmission shaft, and the top of the transmission shaft is fixedly connected to a first bevel gear. The right side of the top of the first bevel gear is meshed with a second bevel gear, and the inner wall of the second bevel gear is fixedly connected to the upper part of the outer wall of the water-cooling cylinder.

[0010] A vibration mechanism is provided inside the vibration screen box, and the vibration mechanism includes a third bevel gear, the bottom end of the third bevel gear is meshed and connected to the first bevel gear, a linkage shaft is fixedly connected to the left side of the third bevel gear, the left end of the linkage shaft passes through the left top of the base and is fixedly connected to a driving wheel, the driving wheel is arranged at the lower part of the interior of the linkage box, the outer wall of the driving wheel is meshed and connected to a belt, the upper part of the inner wall of the belt is meshed and connected to a driven wheel, the right side of the driven wheel is fixedly connected to a rotating shaft, and the left end of the rotating shaft passes through the vibration screen box and is fixedly connected to the fourth bevel gear.

[0011] Preferably, a cavity is provided inside the side wall of the water-cooling cylinder, a feeding thread is fixedly connected inside the water-cooling cylinder, a water-cooling cavity is provided inside the feeding thread, and the bottom end of the water-cooling cavity is connected to the cavity.

[0012] Preferably, a water cooler is fixedly connected to the left side of the outer wall of the water-cooling chamber, the left side of the water cooler is connected to the left side of the cavity, the right side of the water cooler is fixedly connected to a water pipe, the other end of the water pipe is fixedly connected to a water pump, and the bottom end of the water pump is fixedly connected to the right side of the outer wall of the water cooling cylinder.

[0013] Preferably, the right side of the fourth bevel gear is meshingly connected with the fifth bevel gear, the inner wall of the fifth bevel gear is fixedly connected with the first rotating frame, the inner wall of the first rotating frame is fixedly connected with the first screen, the bottom end of the first rotating frame is movably connected with a ball, the bottom end of the ball is movably connected to the inner bottom end of the vibrating screen box, the inner bottom end of the vibrating screen box is provided with a first slideway corresponding to the ball, and the bottom end of the first rotating frame is provided with a second slideway corresponding to the ball.

[0014] Preferably, a wave-shaped slide groove is provided on the top of the first rotating frame, a second rotating frame is movably connected to the top of the first rotating frame, a wave-shaped slide groove opposite to the first rotating frame is provided on the bottom of the second rotating frame, and a second screen is fixedly connected to the inner wall of the second rotating frame.

[0015] Preferably, a telescopic rod is fixedly connected to the top of the second rotating frame, a limiting cylinder is sleeved on the top of the telescopic rod, a spring is fixedly connected to the outer ring of the limiting cylinder at the inner top of the vibration screen box, and the bottom end of the spring is fixedly connected to the top of the second rotating frame.

[0016] Preferably, a cold air groove is opened on the inner wall of the air cooling box, a filter is fixedly connected to the inner wall of the cold air groove, an air cooling machine is fixedly connected to the right side of the air cooling box, an air inlet pipe is fixedly connected to the bottom end of the air cooling machine, the left end of the air inlet pipe is connected to the bottom of the cold air groove, an exhaust pipe is fixedly connected to the top of the air cooling machine, and the left end of the exhaust pipe is connected to the top of the cold air groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The cooling device for alkyl lithium raw materials is provided with a water cooling mechanism. The control console starts the motor to drive the transmission shaft, the first bevel gear, the second bevel gear, the water cooling cylinder and the feeding screw to rotate synchronously. The feeding screw drives the powder to be discharged evenly. The cold water in the cavity and the water cooling cavity is circulated back and forth through the water pipe and the water pump of the water cooler. The cold water cools the powder for a second time through the feeding screw and the water cooling cylinder. Through the above design, the water cooling of the powder is achieved, and it is avoided that part of the powder reaches a predetermined temperature in the effective cooling processing stage, thereby avoiding the need for multiple cooling operations for part of the powder, so that the cooling efficiency is improved, and the stability and practicality of the device are improved.

[0019] 2. The cooling device for the alkyl lithium raw material is provided with a vibration dispersion mechanism. The control console starts the motor to drive the transmission shaft, bevel gear, linkage shaft, driving wheel, belt, driven wheel, rotating shaft and the first rotating frame to rotate. The first rotating frame drives the second rotating frame and the telescopic rod to vibrate up and down and reciprocate to compress the spring. At the same time, the second rotating frame drives the second screen to vibrate synchronously, so that part of the powder passes through the first screen and falls on the top of the first screen, and the first rotating frame drives the first screen to rotate synchronously, so that the powder passes through the first screen and is evenly scattered inside the air-cooled box. Through the above design, vibration dispersion is achieved, and it is avoided that some powders are difficult to be evenly and effectively distributed inside the cooling box, thereby avoiding some powders from agglomerating and quickly passing through the air-cooled zone, so that the cooling efficiency is improved, and the efficiency and practicality of the device are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic front view of the structure of the present invention;

[0021] Figure 2 It is a schematic cross-sectional view of the structure of the present invention;

[0022] Figure 3 It is a front cross-sectional schematic diagram of the local structure of the base and the rotating mechanism of the present invention;

[0023] Figure 4 It is a schematic front cross-sectional view of the partial structure of the water cooling box and the rotating mechanism of the present invention;

[0024] Figure 5 It is a schematic front view cross-sectional view of the local structure of the vibrating screen box and the vibrating mechanism of the present invention;

[0025] Figure 6 For the present invention Figure 5 A schematic diagram of the structure enlargement in the middle;

[0026] Figure 7 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B in the middle.

[0027] In the figure: 101, base; 102, discharge seat; 103, water cooling cylinder; 104, conveying pipe; 105, air cooling box; 106, vibrating screen box; 107, feeding seat; 108, linkage box; 109, control console; 2, rotating mechanism; 201, motor; 202, transmission shaft; 203, first bevel gear; 204, second bevel gear; 205, cavity; 206, feeding thread; 207, water cooling cavity; 208, water cooler; 209, water pipe; 210, water pump; 3, vibration mechanism; 301, third bevel gear; 3 02, linkage shaft; 303, driving wheel; 304, belt; 305, driven wheel; 306, rotating shaft; 307, fourth bevel gear; 308, fifth bevel gear; 309, first rotating frame; 310, first screen; 311, ball bearing; 312, first slide; 313, second slide; 321, second rotating frame; 322, second screen; 323, telescopic rod; 324, limiting cylinder; 325, spring; 331, cold air slot; 332, filter; 333, air cooler; 334, air inlet pipe; 335, exhaust pipe. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-7 , an embodiment provided by the present invention:

[0030] A cooling device for alkyl lithium raw materials, comprising:

[0031] A base 101, a discharge seat 102 is fixedly connected to the upper right side of the base 101, a water-cooling cylinder 103 is movably connected to the left top of the discharge seat 102, a delivery pipe 104 is movably connected to the upper left side of the water-cooling cylinder 103, the bottom end of the delivery pipe 104 is fixedly connected to the upper right side of the base 101, an air-cooling box 105 is fixedly connected to the top of the delivery pipe 104, a vibrating screen box 106 is fixedly connected to the top of the air-cooling box 105, a feeding seat 107 is fixedly connected to the top of the vibrating screen box 106, a linkage box 108 is fixedly connected to the left side of the vibrating screen box 106, a control console 109 is fixedly connected to the left side of the linkage box 108, a rotating mechanism 2 is provided inside the base 101, and a vibrating mechanism 3 is provided inside the vibrating screen box 106.

[0032] The rotating mechanism 2 includes a motor 201, which is fixedly connected to the upper part of the interior of the base 101. The top of the motor 201 is fixedly connected to a transmission shaft 202, and the top of the transmission shaft 202 is fixedly connected to a first bevel gear 203. The top right side of the first bevel gear 203 is meshedly connected to a second bevel gear 204. The inner wall of the second bevel gear 204 is fixedly connected to the upper part of the outer wall of the water-cooling cylinder 103. Through this design, the limited rotation of the water-cooling cylinder 103 is realized. A cavity 205 is opened inside the side wall of the water-cooling cylinder 103. The inside of the water-cooling cylinder 103 is fixedly connected to a feeding thread 206. Through this design, the inside of the water-cooling cylinder 103 is realized. In order to ensure uniform and stable feeding of powder, a water-cooling chamber 207 is provided inside the feeding thread 206, and the bottom end of the water-cooling chamber 207 is connected to the cavity 205. Through this design, the contact area inside the water-cooling cylinder 103 is improved, thereby improving the water cooling efficiency. A water cooler 208 is fixedly connected to the left side of the outer wall of the water-cooling chamber 207, and the left side of the water cooler 208 is connected to the left side of the cavity 205. A water pipe 209 is fixedly connected to the right side of the water cooler 208, and a water pump 210 is fixedly connected to the other end of the water pipe 209. The bottom end of the water pump 210 is fixedly connected to the right side of the outer wall of the water-cooling cylinder 103. Through this design, the normal operation of the water cooling circulation system is achieved.

[0033] The vibration mechanism 3 includes a third bevel gear 301, the bottom end of the third bevel gear 301 is meshed and connected to the first bevel gear 203, the left side of the third bevel gear 301 is fixedly connected with a linkage shaft 302, the left end of the linkage shaft 302 passes through the left top of the base 101 and is fixedly connected with a driving wheel 303, the driving wheel 303 is arranged at the lower part of the linkage box 108, through this design, the limited rotation of the driving wheel 303 is realized, the outer wall of the driving wheel 303 is meshed and connected with a belt 304, the upper part of the inner wall of the belt 304 is meshed and connected with a driven wheel 305, the right side of the driven wheel 305 is fixedly connected with a rotating shaft 306, the left end of the rotating shaft 306 passes through the vibration screen box 106 and is fixedly connected with a fourth bevel gear 307, through this design, The linkage of the fourth bevel gear 307 is realized, and the right side of the fourth bevel gear 307 is meshedly connected with the fifth bevel gear 308, the inner wall of the fifth bevel gear 308 is fixedly connected with the first rotating frame 309, the inner wall of the first rotating frame 309 is fixedly connected with the first screen 310, the bottom end of the first rotating frame 309 is movably connected with the ball 311, the bottom end of the ball 311 is movably connected to the inner bottom end of the vibration screen box 106, the inner bottom end of the vibration screen box 106 is provided with a first slideway 312 corresponding to the ball 311, and the bottom end of the first rotating frame 309 is provided with a second slideway 313 corresponding to the ball 311. Through this design, the smoothness of the rotation of the first rotating frame 309 is improved, and the top of the first rotating frame 309 is provided with a wavy The top of the first rotating frame 309 is movably connected to the second rotating frame 321, and the bottom of the second rotating frame 321 is provided with a wavy sliding groove opposite to the first rotating frame 309. The inner wall of the second rotating frame 321 is fixedly connected with the second screen 322. Through this design, the first rotating frame 309 drives the second rotating frame 321 to slide up and down, thereby realizing vibration screening and discharging of the powder. The top of the second rotating frame 321 is fixedly connected to the telescopic rod 323, and the top of the telescopic rod 323 is sleeved with a limiting cylinder 324. The inner top of the vibration screen box 106 is located at the outer ring of the limiting cylinder 324 and is fixedly connected with a spring 325. The bottom end of the spring 325 is fixedly connected to the top of the second rotating frame 321. Through this design, the second rotating frame 321 is realized. The movable frame 321 is buffered for the up and down vibration, thereby avoiding the first rotating frame 309 and the second rotating frame 321 from colliding with each other to a certain extent. A cold air groove 331 is opened on the inner wall of the air cooling box 105, and a filter screen 332 is fixedly connected to the inner wall of the cold air groove 331. Through this design, the filter screen 332 filters the powder to avoid the powder from entering the air cooling circulation system. An air cooler 333 is fixedly connected to the right side of the air cooling box 105, and an air inlet pipe 334 is fixedly connected to the bottom end of the air cooler 333. The left end of the air inlet pipe 334 is connected to the bottom of the cold air groove 331. An exhaust pipe 335 is fixedly connected to the top of the air cooler 333, and the left end of the exhaust pipe 335 is connected to the top of the cold air groove 331. Through this design, circulating air cooling of the powder is achieved.

[0034] Working principle: When the powder needs to be water-cooled, the motor 201 is first started through the control console 109, and the motor 201 drives the transmission shaft 202 to rotate, and the transmission shaft 202 drives the first bevel gear 203 to rotate synchronously, and the first bevel gear 203 engages to drive the second bevel gear 204 to rotate, and the second bevel gear 204 drives the water-cooling cylinder 103 to rotate, and the water-cooling cylinder 103 drives the feeding thread 206 to rotate synchronously, and the feeding thread 206 drives the powder to be discharged evenly. At the same time, through the water cooler 208, the water pipe 209 and the water pump 210, the cold water in the cavity 205 and the water cooling cavity 207 circulates back and forth, and the cold water passes through the feeding thread 206 and the water cooling cylinder 103 to perform secondary cooling on the powder, thereby realizing the water cooling operation of the powder.

[0035] When the powder needs to be vibrated and dispersed, the motor 201 is first started through the console 109, the motor 201 drives the transmission shaft 202 to rotate, the transmission shaft 202 drives the first bevel gear 203 to rotate synchronously, the first bevel gear 203 meshes to drive the third bevel gear 301 to rotate, the third bevel gear 301 drives the linkage shaft 302 to rotate, the linkage shaft 302 drives the driving wheel 303 to rotate, the driving wheel 303 meshes to drive the belt 304 to rotate, the belt 304 meshes to drive the driven wheel 305 to rotate, the driven wheel 305 drives the rotating shaft 306 to rotate, the rotating shaft 306 drives the fourth bevel gear 307 to rotate synchronously, the fourth bevel gear 307 drives the fifth bevel gear 308 to rotate, and the fifth bevel gear 308 drives the first rotating frame 309 to rotate, and the first rotating frame 309 drives the ball 311 to slide inside the first slide 312 and the second slide 313, and the first rotating frame 309 drives the second rotating frame 321 to vibrate up and down, and the second rotating frame 321 drives the telescopic rod 323 to slide inside the limiting cylinder 324, and reciprocates to compress the spring 325, and at the same time, the second rotating frame 321 drives the second screen 322 to vibrate synchronously, so that part of the powder passes through the second screen 322 and falls on the top of the first screen 310, and then drives the first screen 310 to rotate synchronously through the first rotating frame 309, so that the powder passes through the first screen 310 and is evenly scattered inside the air-cooled box 105, thereby realizing the vibration dispersion operation of the powder.

[0036] When the powder needs to be air-cooled, the air cooler 333 is started through the control console 109. The air cooler 333 performs water-cooling circulation on the air cooling box 105 through the air inlet pipe 334 and the exhaust pipe 335. At the same time, the cold air passes through the filter 332 to blow the powder in a one-way manner to cool it down, thereby realizing the air cooling operation of the powder. The operation ends here.

[0037] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and range of equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A cooling device for an alkyl lithium raw material, comprising a base (101), characterized in that: A discharge seat (102) is fixedly connected to the upper right side of the base (101); a water cooling cylinder (103) is movably connected to the upper left side of the top of the discharge seat (102); a delivery pipe (104) is movably connected to the upper left side of the water cooling cylinder (103); the bottom end of the delivery pipe (104) is fixedly connected to the upper right side of the base (101); the top of the delivery pipe (104) is fixedly connected to an air cooling box (105); the top of the air cooling box (105) is fixedly connected to a vibrating screen box (106); the top of the vibrating screen box (106) is fixedly connected to a feed seat (107); the left side of the vibrating screen box (106) is fixedly connected to a linkage box (108); the left side of the linkage box (108) is fixedly connected to a control console (109); A rotating mechanism (2) is provided inside the base (101), and the rotating mechanism (2) comprises a motor (201), the motor (201) is fixedly connected to the upper part of the base (101), the top end of the motor (201) is fixedly connected to a transmission shaft (202), the top end of the transmission shaft (202) is fixedly connected to a first bevel gear (203), the top right side of the first bevel gear (203) is meshingly connected to a second bevel gear (204), and the inner wall of the second bevel gear (204) is fixedly connected to the upper part of the outer wall of the water-cooling cylinder (103); A vibrating mechanism (3) is provided inside the vibrating screen box (106), and the vibrating mechanism (3) comprises a third bevel gear (301), the bottom end of the third bevel gear (301) is meshedly connected to the first bevel gear (203), a linkage shaft (302) is fixedly connected to the left side of the third bevel gear (301), the left end of the linkage shaft (302) passes through the top left side of the base (101) and is fixedly connected to a driving wheel (303), the driving wheel (303) is arranged at the lower part of the linkage box (108), the outer wall of the driving wheel (303) is meshedly connected to a belt (304), the upper part of the inner wall of the belt (304) is meshedly connected to a driven wheel (305), the right side of the driven wheel (305) is fixedly connected to a rotating shaft (306), and the rotating shaft (3 06) passes through the vibrating screen box (106) and is fixedly connected to a fourth bevel gear (307); the right side of the fourth bevel gear (307) is meshedly connected to a fifth bevel gear (308); the inner wall of the fifth bevel gear (308) is fixedly connected to a first rotating frame (309); the inner wall of the first rotating frame (309) is fixedly connected to a first screen (310); the bottom end of the first rotating frame (309) is movably connected to a ball (311); the bottom end of the ball (311) is movably connected to the inner bottom end of the vibrating screen box (106); the inner bottom end of the vibrating screen box (106) is provided with a first slideway (312) corresponding to the ball (311); and the bottom end of the first rotating frame (309) is provided with a second slideway (313) corresponding to the ball (311).

2. The cooling device for alkyl lithium raw materials according to claim 1, characterized in that: A cavity (205) is provided inside the side wall of the water-cooling cylinder (103), a material feeding thread (206) is fixedly connected inside the water-cooling cylinder (103), a water-cooling cavity (207) is provided inside the material feeding thread (206), and the bottom end of the water-cooling cavity (207) is connected to the cavity (205).

3. The cooling device for an alkyl lithium raw material according to claim 2, characterized in that: A water cooler (208) is fixedly connected to the left side of the outer wall of the water cooling chamber (207); the left side of the water cooler (208) is connected to the left side of the cavity (205); the right side of the water cooler (208) is fixedly connected to a water pipe (209); the other end of the water pipe (209) is fixedly connected to a water pump (210); the bottom end of the water pump (210) is fixedly connected to the right side of the outer wall of the water cooling cylinder (103).

4. The cooling device for alkyl lithium raw materials according to claim 1, characterized in that: A wave-shaped slide groove is provided at the top of the first rotating frame (309), a second rotating frame (321) is movably connected to the top of the first rotating frame (309), a wave-shaped slide groove opposite to the first rotating frame (309) is provided at the bottom of the second rotating frame (321), and a second screen (322) is fixedly connected to the inner wall of the second rotating frame (321).

5. The cooling device for an alkyl lithium raw material according to claim 4, characterized in that: A telescopic rod (323) is fixedly connected to the top of the second rotating frame (321), a limiting cylinder (324) is sleeved on the top of the telescopic rod (323), and a spring (325) is fixedly connected to the outer ring of the limiting cylinder (324) at the inner top of the vibration screen box (106), and the bottom end of the spring (325) is fixedly connected to the top of the second rotating frame (321).

6. The cooling device for alkyl lithium raw materials according to claim 5, characterized in that: The inner wall of the air cooling box (105) is provided with a cold air groove (331), the inner wall of the cold air groove (331) is fixedly connected to a filter (332), the right side of the air cooling box (105) is fixedly connected to an air cooling machine (333), the bottom end of the air cooling machine (333) is fixedly connected to an air inlet pipe (334), the left end of the air inlet pipe (334) is connected to the bottom of the cold air groove (331), the top end of the air cooling machine (333) is fixedly connected to an exhaust pipe (335), and the left end of the exhaust pipe (335) is connected to the top of the cold air groove (331).

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