A low-temperature pulverizing device for cyclosulfonone raw materials

Abstract

This invention provides a cryogenic pulverizing device for cyclosulfonone raw materials, relating to the field of pesticides and herbicides. The device includes a cryogenic pulverizing component, a dispersing component, and a bottom shell. A cyclone assembly is installed between the bottom shell and the dispersing component. Motors A and B are fixedly installed inside the bottom shell. Motor A operates the cryogenic pulverizing component, and motor B drives the cyclone assembly. This cryogenic pulverizing device, by incorporating the dispersing component and the exhaust component, can simultaneously blow and draw in powder with the assistance of the cyclone assembly. This achieves rapid separation of powdered cyclosulfonone and a leak-proof, sealed processing effect. The cryogenic pulverizing component enables cryogenic pulverization during the initial crushing stage, preventing volatilization. The grinding wheel and dispersing blades facilitate subsequent pulverization and prevent temperature rise during grinding.

Description

Technical Field

[0001] This invention relates to the field of pesticides and herbicides, specifically to a low-temperature pulverizing device for cyclosulfonone raw materials. Background Technology

[0002] Tembotrione is a member of the triketone herbicide class and belongs to the HPPD inhibitor class of herbicides.

[0003] Cyclosulfonyl sulfadiazine can maintain good herbicidal activity throughout the entire growth period of crops, and effectively control broadleaf weeds.

[0004] Different crystal forms of commercially important molecules typically possess different properties and can be used in various situations. For example, crystalline forms are generally more stable than amorphous forms, making them suitable for long-term storage of the solid substance, while amorphous forms are generally more soluble than crystalline forms, making them more useful for certain purposes, such as in pharmaceutical applications. Commercial applications requiring small packaging necessitate pulverizing large crystals into powder using crushing equipment. However, the cyclosulfonone in the powder is prone to dispersion, and existing equipment cannot completely prevent this dispersion. Therefore, operators must wear safety clothing and dust masks, posing certain safety hazards. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a low-temperature pulverization device for cyclic sulfonone raw materials, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a low-temperature pulverizing device for cyclosulfonone raw materials, comprising a low-temperature pulverizing component, a dispersing component and a bottom shell, wherein a cyclone component is installed between the bottom shell and the dispersing component, and motor A and motor B are fixedly installed inside the bottom shell, wherein motor A is used to operate the low-temperature pulverizing component and motor B is used to drive the cyclone component to operate.

[0007] The dispersion assembly includes a rotor, an impeller, an inner shell, and an outer shell. The upper end of the inner shell is connected to the low-temperature pulverizing assembly, and the lower end of the inner shell is fixed to the bottom shell. The rotor is located inside the inner shell and rotates concentrically with it. The output shaft of motor A is connected to the rotor. The impeller is fixed outside the rotor. The inner wall of the inner shell has multiple vertically arranged raised rings. The end of the impeller away from the rotor extends to the raised ring. The inner wall of the inner shell has multiple circumferentially distributed vertical grooves that pass through the raised rings. Exhaust components are installed on the inner shell at positions corresponding to the vertical grooves. The exhaust components connect the inside and outside of the inner shell. The outer shell covers the outside of the inner shell, and its upper and lower ends are sealed to the side walls of the inner shell. The exhaust components are located inside the outer shell, and two suction pipes are installed on the outer wall of the outer shell.

[0008] Preferably, the outer wall of the inner shell is provided with a placement groove at the corresponding vertical groove. The placement groove connects the inside and outside of the inner shell. The exhaust assembly is fixed in the placement groove. The exhaust assembly includes a shrink plate. The two shrink plates are located inside the inner shell with one end close to each other and the other end far apart. It also includes two connecting plates, which are fixedly connected to the upper and lower ends of the two shrink plates respectively. The two connecting plates are fixed to the upper and lower inner walls of the placement groove.

[0009] Preferably, the impeller has multiple blades on its exterior, and a U-shaped groove is formed at the end of the blades away from the impeller.

[0010] Preferably, a shrink shroud concentric with the inner shell is fixedly installed at the lower end of the inner shell, the bottom shell is fixed to the lower end of the shrink shroud, a diffuser concentric with the shrink shroud is fixedly installed at the output end of motor A, the upper end of the diffuser is fixed to the rotor, the lower end of the diffuser and the lower end of the shrink shroud are on the same plane, the cyclone assembly is located between the lower ends of the two, the cyclone assembly is rotatably connected to the shrink shroud and the diffuser, and a ring of air inlets is opened on the bottom side of the shrink shroud.

[0011] Preferably, the cyclone assembly includes a rotating ring, which is inserted between the contraction shroud and the diffusion shroud and rotatably connected to both. The output shaft of the motor B is equipped with a gear, and a gear ring is fixedly installed on the bottom surface of the rotating ring. The gear meshes with the gear ring, and a fan blade is fixedly installed on the upper surface of the rotating ring. When the rotating ring rotates, the fan blade can draw in air from the air inlet and blow air upward.

[0012] Preferably, a support ring is fixedly installed at the bottom end of the shrink cover, and the outer circle of the toothed ring is inserted into the support ring and rotatably connected to it.

[0013] Preferably, the cryogenic pulverizing assembly includes a feed inlet and a grinding wheel. The feed inlet is fixed to the upper end of the inner shell and communicates with its interior. The grinding wheel is located inside the feed inlet and fixed to the rotor. The two are coaxially arranged. The interior of the feed inlet has a two-section structure. The diameter of the inner wall of the upper end gradually decreases downwards, and the diameter of the inner wall of the lower end gradually increases downwards. The two are joined at the middle position. The grinding wheel is located inside the lower end of the feed inlet. The diameter of the grinding wheel gradually increases from top to bottom. The gap between the grinding wheel and the feed inlet gradually decreases from top to bottom. Multiple circumferentially distributed convex strips are fixedly installed on the outer wall of the grinding wheel. A circumferentially distributed concave strip is opened on the lower inner wall of the feed inlet. A sealing cover is fixedly installed on the outside of the feed inlet. A coolant circulation pipe is installed on the sealing cover. Multiple heat dissipation fins are fixedly installed on the outside of the end of the feed inlet inside the sealing cover.

[0014] Preferably, a ring of dispersing blades is fixedly installed on the bottom surface of the grinding wheel below the feed inlet.

[0015] Preferably, a perforated screen is fixedly installed at the upper end of the inner shell below the dispersing blades, and the main shaft of the rotor passes through the perforated screen and is rotatably connected to it.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This cryogenic pulverizing equipment for cyclosulfonone raw materials, through the setting of a dispersion component and an exhaust component, allows the cyclosulfonone crystals that fall off to the inner wall of the inner shell to be crushed when the rotor rotates. Similarly, the high-speed rotating impeller can also crush the cyclosulfonone crystals. When the crystals are in powder form, the rotor of the cyclone component rotates, and the fan blades blow air upwards. External air enters through the air inlet and blows the powdered cyclosulfonone out through the exhaust component. At the same time, the cyclosulfonone that has not been powdered falls with gravity, is hit by the fan blades again, and then comes into contact with the impeller again to be crushed once more. As the crushing is completed, the powdered cyclosulfonone will completely enter the outer shell. The outer shell needs to be connected to an air extraction device, such as a cyclone separator, which can simultaneously suck up the powder while blowing it with the help of the cyclone component. This achieves the effect of quickly separating the powdered cyclosulfonone and sealing it to prevent leakage.

[0018] 2. This low-temperature pulverizing equipment for cyclosulfonone raw materials, by setting up a low-temperature pulverizing component, ensures that the cyclosulfonone crystals are pulverized by the grinding wheel when they are first fed in. During the pulverizing process, the processing area will heat up, especially the metal feed inlet. Before heating up, the cooling liquid is circulated into the sealed cover to quickly remove the heat near the feed inlet, thereby achieving the effect of low-temperature pulverization in the initial crushing stage and preventing volatilization.

[0019] 3. The low-temperature pulverization equipment for cyclosulfonone raw materials, by setting up grinding wheels and dispersing blades, allows the grinding wheels to pulverize the cyclosulfonone crystals in the first step, and the dispersing blades to hit the cyclosulfonone crystal fragments, causing them to collide internally, thereby causing them to break due to impact, which facilitates the next step of pulverization and avoids the temperature rise caused by grinding. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

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

[0022] Figure 3 This is an exploded view of the structure of the low-temperature pulverizing component of the present invention;

[0023] Figure 4 This is a diagram showing the internal structure of the cryogenic pulverizing component of the present invention;

[0024] Figure 5 This is a structural diagram of the dispersion component of the present invention;

[0025] Figure 6 This is a structural breakdown diagram of the distributed component of the present invention;

[0026] Figure 7This is a partial structural diagram of the dispersion component of the present invention;

[0027] Figure 8 This is a structural diagram of the dispersion component and the exhaust component of the present invention;

[0028] Figure 9 This is a split view of the dispersion component and the exhaust component of the present invention;

[0029] Figure 10 This is a split view of the exhaust component of the present invention.

[0030] In the diagram: 1. Low-temperature grinding assembly; 101. Feed inlet; 102. Grinding wheel; 103. Raised bar; 104. Concave bar; 105. Sealing cover; 106. Coolant circulation pipe; 107. Heat dissipation fins; 108. Dispersing blades; 2. Dispersing assembly; 201. Rotor; 202. Impeller; 2021. Blade; 2022. U-shaped groove; 203. Inner shell; 204. Outer shell; 205. Raised ring 206. Vertical slot; 207. Exhaust assembly; 2071. Shrink plate; 2072. Connecting plate; 208. Suction pipe; 209. Placement slot; 210. Permeable mesh; 3. Bottom shell; 4. Motor A; 5. Motor B; 6. Cyclone assembly; 601. Rotating ring; 602. Gear; 603. Gear ring; 604. Fan blade; 605. Support ring; 7. Shrink cover; 8. Diffuser cover; 9. Air inlet. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0032] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0033] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0035] like Figure 1-10 As shown, a cryogenic pulverizing device for cyclosulfonone raw materials includes a cryogenic pulverizing component 1, a dispersing component 2, and a bottom shell 3. A cyclone component 6 is installed between the bottom shell 3 and the dispersing component 2. A motor A4 and a motor B5 are fixedly installed inside the bottom shell 3. The motor A4 is used to operate the cryogenic pulverizing component 1, and the motor B5 is used to drive the cyclone component 6 to operate.

[0036] The dispersing assembly 2 includes a rotor 201, an impeller 202, an inner shell 203, and an outer shell 204. The upper end of the inner shell 203 is connected to the low-temperature pulverizing assembly 1, and the lower end of the inner shell 203 is fixed to the bottom shell 3. The rotor 201 is located inside the inner shell 203 and is concentrically connected to it. The output shaft of the motor A4 is connected to the rotor 201. The impeller 202 is fixed outside the rotor 201. The inner wall of the inner shell 203 is provided with multiple vertically arranged protruding rings 205. The end of the impeller 202 away from the rotor 201 extends... At the protruding ring 205, the inner wall of the inner shell 203 is provided with multiple vertical grooves 206 arranged in a circular array. The vertical grooves 206 pass through the protruding ring 205. Exhaust components 207 are installed on the inner shell 203 at positions corresponding to the vertical grooves 206. The exhaust components 207 connect the inside and outside of the inner shell 203. The outer shell 204 covers the outside of the inner shell 203, and its upper and lower ends are sealed to the side walls of the inner shell 203. The exhaust components 207 are located inside the outer shell 204. Two suction pipes 208 are installed on the outer wall of the outer shell 204.

[0037] The outer casing 204 is composed of two semi-circular shells that can be disassembled for later cleaning. The blades of the impeller 202 extend to the protruding ring 205, but there is a gap between them. The gap of the exhaust component 207 is small. When the cyclosulfonone crystals are not broken down to the required particle diameter, they cannot pass through the exhaust component 207. The suction pipe 208 outside the outer casing 204 needs to be connected to an exhaust fan or a cyclone separator with an exhaust fan during actual use.

[0038] The outer wall of the inner shell 203 is provided with a placement slot 209 at the corresponding vertical groove 206. The placement slot 209 connects the inside and outside of the inner shell 203. The exhaust component 207 is fixed in the placement slot 209. The exhaust component 207 includes a shrink plate 2071. The two shrink plates 2071 are located inside the inner shell 203 with one end close to each other and the other end far apart. It also includes two connecting plates 2072, which are fixedly connected to the upper and lower ends of the two shrink plates 2071 respectively. The two connecting plates 2072 are fixed to the upper and lower inner walls of the placement slot 209.

[0039] The diffused exhaust assembly 207 makes it difficult for the cyclic sulfonone powder to return, and cyclic sulfonone that has not been crushed into powder is difficult to pass through the exhaust assembly 207.

[0040] The impeller 202 has multiple blades 2021 on its outside, and a U-shaped groove 2022 is provided at the end of the blade 2021 away from the impeller 202.

[0041] The impeller 202 with U-shaped groove 2022 can increase the contact force with cyclosulfonone crystals, resulting in high crushing efficiency when impacting cyclosulfonone.

[0042] A concentric contraction shroud 7 is fixedly installed at the lower end of the inner shell 203. The bottom shell 3 is fixed to the lower end of the contraction shroud 7. A diffuser shroud 8 concentric with the contraction shroud 7 is fixedly installed at the output end of the motor A4. The upper end of the diffuser shroud 8 is fixed to the rotor 201. The lower end of the diffuser shroud 8 is on the same plane as the lower end of the contraction shroud 7. The cyclone assembly 6 is located between the lower ends of the two. The cyclone assembly 6 is rotatably connected to the contraction shroud 7 and the diffuser shroud 8. A ring of air inlets 9 is opened on the side of the bottom end of the contraction shroud 7.

[0043] The contraction shroud 7 and the diffusion shroud 8 cause the cyclone sulfonate falling with gravity to hit the cyclone assembly 6, and then be brought back up by the cyclone assembly 6.

[0044] Cyclone assembly 6 includes a rotating ring 601, which is snapped between the contraction shroud 7 and the diffuser shroud 8 and rotatably connected to them. The output shaft of motor B5 is equipped with a gear 602. A gear ring 603 is fixedly mounted on the bottom surface of the rotating ring 601, and the gear 602 meshes with the gear ring 603. A fan blade 604 is fixedly mounted on the upper surface of the rotating ring 601. When the rotating ring 601 rotates, the fan blade 604 can draw in air from the air inlet 9 and blow air upward.

[0045] The high-speed rotation of the rotating ring 601 will prevent powder from entering between the rotating ring 601 and the shrinkage shroud 7 or the diffusion shroud 8.

[0046] A support ring 605 is fixedly installed at the bottom of the shrink cover 7, and the outer circle of the toothed ring 603 is inserted into the support ring 605 and rotatedly connected to it.

[0047] The cryogenic pulverizing assembly 1 includes a feed inlet 101 and a grinding wheel 102. The feed inlet 101 is fixed to the upper end of the inner shell 203 and communicates with its interior. The grinding wheel 102 is located inside the feed inlet 101 and fixed to the rotor 201. The two are coaxially arranged. The interior of the feed inlet 101 has a two-section structure. The diameter of the inner wall at the upper end gradually decreases downwards, while the diameter of the inner wall at the lower end gradually increases downwards. The two sections are joined at the middle. The grinding wheel 102 is located inside the lower end of the feed inlet 101. The diameter of the grinding wheel 102 gradually increases from top to bottom. The gap between the grinding wheel 102 and the feed inlet 101 gradually decreases from top to bottom. The outer wall of the grinding wheel 102 is fixedly equipped with a plurality of circumferentially distributed protruding strips 103. The inner wall of the lower end of the feed inlet 101 is provided with a ring of circumferentially distributed concave strips 104. The feed inlet 101 is fixedly covered by a sealing cover 105. A coolant circulation pipe 106 is installed on the sealing cover 105. A plurality of heat dissipation fins 107 are fixedly installed on the outer side of the end of the feed inlet 101 inside the sealing cover 105.

[0048] The structure of the grinding wheel 102 and the feed inlet 101 can initially crush large cyclosulfonone crystals, while the externally installed sealing cover 105 needs to be connected to the coolant circulation device in the prior art so as to remove the heat near the feed inlet 101 in time during processing.

[0049] A ring of dispersing blades 108 is fixedly installed on the bottom surface of the grinding wheel 102 below the feed inlet 101.

[0050] The upper end of the inner shell 203 is fixedly installed with a through mesh 210 below the dispersing blade 108, and the main shaft of the rotor 201 passes through the through mesh 210 and is rotatably connected to it.

[0051] During operation, the cyclosulfonone crystals are crushed by the grinding wheel 102 in the first step. During this crushing process, the processing area heats up, especially the metal inlet. Before this heating, cooling fluid is circulated into the sealing cover 105 to quickly remove heat from the area near the inlet 101. After the grinding wheel 102 crushes the cyclosulfonone crystals in the first step, the dispersing blades 108 strike the cyclosulfonone crystal fragments, causing them to collide internally and break up due to impact, facilitating further crushing and preventing overheating during grinding. As the rotor 201 rotates, the falling cyclosulfonone crystals are thrown by the impeller 202 onto the inner wall of the inner shell 203 for further crushing. The high-speed rotating impeller 202 can also crush cyclosulfonone crystals. When the crystals are in powder form, the rotor 201 of the cyclone assembly 6 rotates, and the fan blades 604 blow air upwards. External air enters through the air inlet 9, blowing the powdered cyclosulfonone out of the exhaust assembly 207. At the same time, the cyclosulfonone that has not turned into powder falls with gravity and is hit again by the fan blades 604, then comes into contact with the impeller 202 again and is crushed once more. As the crushing is completed, the powdered cyclosulfonone will completely enter the outer casing 204. The outer casing 204 needs to be connected to an air extraction device, such as a cyclone separator, which can simultaneously suck up the powder while blowing it with the help of the cyclone assembly 6.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0053] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-temperature grinding apparatus for raw materials of Sulfentrazone, characterized by: The application relates to a low-temperature pulverizing device, which comprises a low-temperature pulverizing assembly, a dispersing assembly and a bottom shell, a cyclone assembly is arranged between the dispersing assembly and the bottom shell, a motor A and a motor B are fixedly arranged in the bottom shell, the motor A is used for operating the low-temperature pulverizing assembly, and the motor B is used for driving the cyclone assembly to operate. The dispersing assembly comprises a rotor, an impeller, an inner shell and an outer shell, the upper end of the inner shell is connected with the low-temperature pulverizing assembly, the lower end of the inner shell is fixed with the bottom shell, the rotor is arranged in the inner shell and is connected with the inner shell in a concentric rotating mode, the output shaft of the motor A is connected with the rotor, the impeller is fixed outside the rotor, a plurality of convex rings arranged in an up-down mode are arranged on the inner wall of the inner shell, one end of the impeller away from the rotor extends to the position of the convex rings, a plurality of vertical grooves arranged in a circumferential array are arranged on the inner wall of the inner shell, the vertical grooves pass through the convex rings, air exhausting assemblies are arranged at positions corresponding to the vertical grooves on the inner shell, the air exhausting assemblies are communicated between the inside and outside of the inner shell, the outer shell is arranged outside the inner shell and is sealed with the side wall of the inner shell at both upper and lower ends, the air exhausting assemblies are arranged in the outer shell, and two air suction pipes are arranged on the outer wall of the outer shell. Placing grooves are formed in the outer wall of the inner shell and communicated between the inside and outside of the inner shell, the air exhausting assemblies are fixed in the placing grooves, the air exhausting assemblies comprise two contraction plates, one end of the two contraction plates is close to each other and the other end is away from each other, two connecting plates are fixedly connected with the upper and lower ends of the two contraction plates and fixed with the upper and lower inner walls of the placing grooves. A plurality of blade plates are arranged outside the impeller, and U-shaped grooves are formed in one end of the blade plates away from the impeller. The lower end of the inner shell is fixedly provided with a contraction cover concentric with the inner shell, the bottom shell is fixed with the lower end of the contraction cover, the output end of the motor A is fixedly provided with a diffusion cover concentric with the contraction cover, the upper end of the diffusion cover is fixed with the rotor, the lower end of the diffusion cover is in the same plane with the lower end of the contraction cover, the cyclone assembly is arranged between the lower ends of the contraction cover and the diffusion cover, the cyclone assembly is rotatably connected with the contraction cover and the diffusion cover, and a plurality of air inlet holes are formed in the bottom side of the contraction cover. The cyclone assembly comprises a rotating ring, the rotating ring is clamped between the contraction cover and the diffusion cover and rotatably connected with the two, the output shaft of the motor B is provided with a gear, the bottom surface of the rotating ring is fixedly provided with a gear ring, the gear is engaged with the gear ring, the upper surface of the rotating ring is fixedly provided with a fan blade, and the fan blade can inhale air from the air inlet holes and blow air upward when the rotating ring rotates.

2. The low-temperature grinding device for a raw material of Sulfentrazone according to claim 1, characterized in that: The bottom end of the contraction cover is fixedly provided with a supporting ring, and the outer circle of the gear ring is clamped in the supporting ring and rotatably connected with the supporting ring.

3. The low-temperature grinding device for a raw material of Sulfentrazone according to claim 2, characterized in that: The low-temperature pulverizing assembly comprises a feeding port and a grinding wheel, the feeding port is fixed with the upper end of the inner shell and communicated with the inside of the inner shell, the grinding wheel is arranged in the feeding port and fixed with the rotor, and the two are coaxially arranged, the inside of the feeding port is in a two-section structure, the inner wall of the upper end is gradually contracted downwards in diameter, the inner wall of the lower end is gradually increased in diameter downwards, and the two are combined at the middle position, the grinding wheel is arranged in the lower end inside of the feeding port, the diameter of the grinding wheel is gradually increased from top to bottom, the gap between the grinding wheel and the feeding port is gradually reduced from top to bottom, a plurality of convex strips arranged in a circumferential array are fixedly arranged on the outer wall of the grinding wheel, a plurality of concave strips arranged in a circumferential array are formed in the lower end inner wall of the feeding port, a sealing cover is fixedly arranged outside the feeding port, a cooling liquid circulating pipe is arranged on the sealing cover, and a plurality of heat dissipation fins are fixedly arranged outside the end of the feeding port in the sealing cover.

4. The low-temperature grinding device for a raw material of Sulfentrazone according to claim 3, characterized in that: The bottom surface of the grinding wheel is fixedly installed with a ring of dispersing blades below the feeding port.

5. The low-temperature grinding device for a raw material of Sulfentrazone according to claim 4, characterized in that: The upper end of the inner shell is fixedly installed with a meshing screen below the dispersing blades, and the main shaft of the rotor penetrates through the meshing screen and is rotationally connected therewith.

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