Gas suspension type wettable imidacloprid powder crushing device

Abstract

The invention discloses a gas suspension type wettable imidacloprid powder smashing device which comprises a shell, a grinding space is formed in the shell, a discharging pipe is arranged at the top of the shell, a nozzle is arranged at the bottom of the shell, a grinding assembly and a scattering assembly are arranged in the shell, and the spraying assembly is arranged in the shell. The gas suspension type wettable imidacloprid powder smashing device comprises a shell, a scattering assembly is arranged in the shell, a gap exists between the grinding assembly and the inner wall of the shell, the air flow speed above the grinding assembly only can support imidacloprid powder with the particle size meeting the production requirement, and the grinding assembly is located above the scattering assembly. Small-particle imidacloprid powder is supported by flowing air and can be taken out in time, and the phenomenon of repeated grinding is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of wettable imidacloprid powder preparation, and in particular relates to a gas suspension type wettable imidacloprid powder pulverizing device. Background Art

[0002] In the preparation process of wettable imidacloprid powder, the imidacloprid original drug and other auxiliary agents need to be crushed, and then ultrafinely crushed to further refine the particles and improve the fineness and uniformity of the product.

[0003] Existing ultrafine grinding processing methods for imidacloprid technical and other auxiliary agents include mechanical grinding and air flow grinding. Mechanical grinding is to break imidacloprid technical and other auxiliary agents into smaller particles through grinding operation, while air flow grinding is to use high-speed airflow to impact and shear the material to achieve the purpose of grinding.

[0004] However, during the mechanical crushing process, the imidacloprid technical and other additives will generate heat due to the grinding force, which may cause the imidacloprid technical and other additives powders to agglomerate and stick to the equipment.

[0005] Air flow mill is often used to process imidacloprid technical. In order to improve the efficiency of classification, air flow mill is usually equipped with screen to screen materials with larger particle size. However, in actual use, the screen may be affected by material adhesion or blockage, which will affect the classification effect. Screen blockage will affect the particle size distribution of the crushed material, resulting in uneven particle size, and will mix qualified and unqualified particles together, which is prone to repeated ultrafine grinding of wettable imidacloprid powder, reducing the grinding efficiency of wettable imidacloprid powder and affecting product quality. Summary of the invention

[0006] In view of the deficiencies in the prior art, the object of the present invention is to provide a gas-suspended wettable imidacloprid powder pulverizing device.

[0007] To achieve the aforementioned invention object, the technical solution adopted by the present invention comprises a shell, wherein the shell has a grinding space inside, a discharge pipe is arranged at the top of the shell, a nozzle is arranged at the bottom of the shell, a grinding component and a breaking component are arranged in the shell, a gap exists between the grinding component and the inner wall of the shell, the air flow rate above the grinding component can only support the imidacloprid powder with a particle size that meets the production requirements, and the grinding component is located above the breaking component;

[0008] The grinding component has a collecting port and a dropping port, so that the imidacloprid powder can fall from the collecting port into the grinding component for grinding; after grinding, the imidacloprid powder leaves the grinding component from the dropping port and moves toward the breaking component under the action of gravity.

[0009] By using the grinding component and the breaking component in combination, the flowing air is used to lift the imidacloprid powder and suspend it above the grinding component. Large particles of imidacloprid powder fall to the grinding component for grinding due to gravity, and small particles of imidacloprid powder will be lifted up and taken out in time, avoiding repeated grinding while making the crushed imidacloprid powder uniform in particle size, thereby improving the crushing efficiency of wettable imidacloprid powder.

[0010] Preferably, the cross-sectional area of ​​the bottom of the housing is smaller than the cross-sectional area of ​​the top of the housing.

[0011] Compared with the existing technology, there is no screen structure, and the air flow is used to lift the imidacloprid powder. The cross-section of the bottom of the shell is smaller than that of the top. The gas flow rate will also slow down as it moves toward the top of the shell. Large particles of imidacloprid powder fall under the action of gravity, and small particles of imidacloprid powder continue to be suspended to complete screening, avoiding blockage and reducing the workload of subsequent maintenance.

[0012] Preferably, the grinding assembly comprises a grinding disc, and the grinding disc is rotatably connected to the top of the shell.

[0013] Preferably, the grinding assembly further comprises a grinding cylinder, the grinding cylinder is fixedly connected to the inner wall of the shell, the collecting port is arranged at the top of the grinding cylinder, a falling channel connected to the collecting port is arranged in the grinding cylinder, the falling channel has a conical inner wall, so that the interior of the grinding cylinder is large at both ends and contracted in the middle;

[0014] The grinding disc is located inside the falling channel, the shape of the grinding disc is adapted to the shape of the inner wall of the falling channel, the grinding disc and the inner wall gap of the falling channel are matched, the grinding disc and the inner wall of the falling channel are used together to grind imidacloprid powder, and the gap between the grinding disc and the lower end of the falling port forms the falling port.

[0015] Preferably, the collecting port has an inclined surface, and when the imidacloprid powder falls on the inclined surface, the imidacloprid powder slides along the inclined surface under the action of gravity.

[0016] Preferably, the breaking up assembly comprises a breaking up rod having a plurality of air supply blades.

[0017] Preferably, the air supply blade comprises a breaking up portion and an air supply portion, and the air supply portion can drive air to flow toward the discharge pipe when the air supply blade rotates.

[0018] Preferably, the air supply portion is close to the inner wall of the shell; and / or the scattering portion is located below the drop opening.

[0019] Compared with the prior art, the advantages of the present invention include:

[0020] (1) The present invention provides a gas suspension type wettable imidacloprid powder pulverizing device, wherein the air flow rate above the grinding assembly can only support imidacloprid powder with a particle size that meets the production requirements. After the air mixed with imidacloprid powder moves to the top of the grinding assembly, large particles of imidacloprid powder fall down, and small particles of imidacloprid powder leave the housing from the discharge pipe along with the air flow, thereby achieving a screening function;

[0021] (2) The present invention provides a gas suspension type wettable imidacloprid powder pulverizing device, which can lift small particles of imidacloprid powder through flowing air and take them out in time, thus avoiding repeated grinding;

[0022] (3) The present invention provides a gas suspension type wettable imidacloprid powder pulverizing device, wherein the heat generated by the grinding component during grinding can be heat exchanged with the flowing air to achieve the heat dissipation effect of the grinding component;

[0023] (4) The present invention provides a gas suspension type wettable imidacloprid powder pulverizing device. After the air mixed with imidacloprid powder moves to the top of the grinding assembly, large particles of imidacloprid powder fall down, and small particles of imidacloprid powder are taken out with the air flow, so that the particle size of the crushed imidacloprid powder can be uniform.

[0024] (5) The present invention provides a gas suspension type wettable imidacloprid powder pulverizing device, which improves the pulverizing efficiency of imidacloprid powder by grinding with a grinding component, and the agglomerated state of imidacloprid powder formed by grinding is dispersed by a dispersing component, and then the large particles of imidacloprid powder are screened by air flow and enter the grinding component again, so that the grinding component mainly grinds the large particles of imidacloprid powder, and the small particles of imidacloprid powder are screened, thereby improving the ultrafine pulverization efficiency of the imidacloprid powder;

[0025] (6) The present invention provides a gas suspension type wettable imidacloprid powder pulverizing device, which, through the setting of the transmission parts, enables the grinding component and the breaking component to share a driving source and simultaneously perform coaxial reversal so that when the grinding component transfers the material to the breaking component, the imidacloprid powder in the agglomerated state can be easily broken up in the opposite rotation direction, thereby improving the ultrafine grinding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1It is an overall schematic diagram of a gas suspension type wettable imidacloprid powder pulverizing device in the present invention;

[0028] Figure 2 This is a schematic diagram of the bottom structure of a gas suspension type wettable imidacloprid powder pulverizing device in the present invention;

[0029] Figure 3 It is a schematic cross-sectional structure diagram of a gas suspension type wettable imidacloprid powder pulverizing device in the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of the grinding barrel in the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the blade in the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the transmission member in the present invention.

[0033] Reference numerals:

[0034] 1. Shell; 2. Feeding pipe; 3. Fan; 4. Discharging rack; 5. Grinding motor; 6. Discharging pipe; 7. Nozzle; 8. Driving rod; 9. Grinding cylinder; 10. Grinding disc; 11. Breaking rod; 12. Air supply blades; 13. Transmission parts; 1301. Rotating sleeve; 1302. Internal gear ring; 1303. Driven gear; 1304. Driving gear; 1305. Toothed disc; 14. Breaking tool; 15. Air supply fan blades; 16. Short-circuit rod. DETAILED DESCRIPTION

[0035] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the present invention after long-term research and extensive practice. The following will further explain the technical solution, its implementation process and principle, etc. in conjunction with the drawings in the embodiments of this application and specific implementation cases.

[0036] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, the present invention covers any substitution, modification, equivalent method and scheme made on the spirit, principle and scope of the present invention defined by the claims. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present application, "first", "second", "third" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "an" and other similar words do not indicate a quantity limitation, but indicate the existence of at least one. "Include" or "comprise" and other similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0038] In the description of the present application, the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, when positional terms such as both sides, outside, up and down are used, it should be understood that they are only used to facilitate understanding and description, considering that the structure may be facing other positions.

[0039] In the description of this application, unless otherwise clearly specified and limited, the technical or scientific terms used should have the usual meanings understood by persons with general skills in the field to which this application belongs. Terms such as "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection, or an integrated connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] The embodiment of the present invention is intended to introduce and illustrate the structural composition of the gas-suspended wettable imidacloprid powder pulverizing device and the coordination relationship between the various components. Unless otherwise specified, the size, material and manufacturing process of each component in the gas-suspended wettable imidacloprid powder pulverizing device in the embodiment of the present invention can be selected according to the specific situation and are not specifically limited or explained herein.

[0041] Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the following detailed description of the present invention. For those skilled in the art, the present invention can be fully understood without the description of these details.

[0042] Example 1

[0043] See also Figure 1 and Figure 2 A gas suspension type wettable imidacloprid powder pulverizing device comprises a shell 1, a grinding space is provided inside the shell 1, a discharge pipe 6 is provided at the top of the shell 1, a nozzle 7 is provided at the bottom of the shell 1, a grinding component and a breaking component are provided in the shell 1, there is a gap between the grinding component and the inner wall of the shell 1, the air flow rate above the grinding component can only support the imidacloprid powder with a particle size that meets the production requirements, and the grinding component is located above the breaking component;

[0044] It can be understood that a discharge rack 4 is fixedly connected to the top of the shell 1, a fan 3 is fixedly connected inside the discharge rack 4, a discharge port is opened on one side of the discharge rack 4, a discharge pipe 6 is fixedly connected to the discharge port, and the discharge pipe 6 is arranged above the grinding assembly. By starting the fan 3, small particles of imidacloprid powder can be blown toward the discharge pipe 6.

[0045] It should be noted that the imidacloprid technical can be used to improve the dispersibility and suspension of imidacloprid in water by mixing with a surfactant.

[0046] The grinding component has a collecting port and a dropping port, so that the imidacloprid powder can fall into the grinding component from the collecting port for grinding; after being ground, the imidacloprid powder leaves the grinding component from the dropping port and moves toward the breaking component under the action of gravity.

[0047] It can be understood that the nozzle 7 has multiple nozzles arranged at the bottom of the shell 1 and connected to the inside of the grinding space. It is necessary to connect the nozzle 7 to a pipe that can convey gas, and control the gas flow rate through the pipe access to the common pressure regulating device in the prior art, so as to achieve the technical effect required by the present invention. When the imidacloprid powder enters the shell 1, the flow rate inside the gas conveying pipe is adjusted by the pressure regulating device, and sprayed into the shell 1 through the nozzle 7, so that the imidacloprid powder mixed airflow rises and moves to the top of the grinding cylinder 9. At this time, the gas flow rate is weakened, and the air flow rate above the grinding component can only support the imidacloprid powder with a particle size that meets the production requirements. Qualified imidacloprid powder will enter the discharging rack 4, and the start-up of the fan 3 can blow the small particles of imidacloprid powder to the discharging pipe 6, and take it out and collect it through the discharging pipe 6, while the unqualified large particles of imidacloprid powder will fall into the collecting port by gravity, and enter the falling channel along the inclined surface to complete the screening.

[0048] It should be noted that the nozzle 7 is fixedly installed at an installation angle at the bottom of the housing 1 .

[0049] See also Figure 3 , the cross-sectional area of ​​the bottom of the shell 1 is smaller than the cross-sectional area of ​​the top of the shell 1, and the cross-sectional area of ​​the shell 1 in the direction of movement from the bottom to the top gradually increases, so that the speed of the gas flowing toward the top of the shell 1 decreases;

[0050] The grinding assembly includes a grinding disc 10, which is rotatably connected to the top of the shell 1. The grinding assembly also includes a grinding cylinder 9, which is fixedly connected to the inner wall of the shell 1. The collecting port is arranged at the top of the grinding cylinder 9. A falling channel connected to the collecting port is arranged in the grinding cylinder 9. The falling channel has a conical inner wall, so that the interior of the grinding cylinder 9 is large at both ends and contracted in the middle. The collecting port has an inclined surface. When the imidacloprid powder falls on the inclined surface, the imidacloprid powder slides along the inclined surface under the action of gravity, and the large particles of imidacloprid powder can slide into the interior of the falling channel through the inclined surface when falling.

[0051] The grinding disc 10 is located inside the falling channel, and the shape of the grinding disc 10 is adapted to the shape of the inner wall of the falling channel. The grinding disc 10 and the inner wall gap of the falling channel are matched, and the grinding disc 10 and the inner wall of the falling channel are used together to grind imidacloprid powder. The gap between the grinding disc 10 and the lower end of the falling opening forms the falling opening. The rotation of the grinding disc 10 can cooperate with the falling channel to grind large particles of imidacloprid powder, and during grinding, since large particles of imidacloprid powder can vibrate between the grinding disc 10 and the falling channel, even if large particles of imidacloprid powder are agglomerated, they can automatically fall under the action of gravity to avoid sticking.

[0052] See also Figure 3 , Figure 5 The scattering assembly includes a scattering rod 11, which has a plurality of air supply blades 12, which are fixedly connected to the scattering rod 11, and the air supply blades 12 have a scattering portion and an air supply portion. The air supply portion can drive air to flow toward the discharge pipe 6 when the air supply blades 12 rotate. The scattering portion is specifically a scattering tool 14, which is a plate-shaped structure, and its bottom is horizontally arranged. Compared with the fan blades in the prior art, the wind transmission strength is weaker when it rotates, which can reduce the wind resistance when the winding falls after grinding is completed, which is helpful for scattering. The dispersing link is carried out, and the specific structure of the air supply part is the air supply fan blade 15, whose shape structure, installation angle and function are the same as those of the fan blade, all of which are for stirring the air for blowing; specifically, a dispersing motor 13 is fixedly connected to the bottom of the shell 1, and the driving end of the dispersing motor 13 is fixedly connected to the dispersing rod 11. By starting the dispersing motor 13, the dispersing rod 11 can be driven to rotate, and the rotation of the dispersing rod 11 drives the dispersing tool 14 and the air supply fan blade 15 to rotate, so that the dispersing tool 14 can disperse the agglomerated state of large particles of imidacloprid powder.

[0053] See also Figure 3 , Figure 4 , Figure 6 The top of the discharging frame 4 is fixedly connected with a grinding motor 5, the top of the driving rod 8 is fixedly connected with the driving end of the grinding motor 5, and a transmission member 13 is arranged in the housing 1, and the transmission member 13 is used to drive the coaxial reverse rotation between the grinding disc 10 and the breaking rod 11;

[0054] The transmission member 13 includes a rotating sleeve 1301, an inner gear ring 1302, three driven gears 1303, a driving gear 1304, and a toothed disc 1305. A driving rod 8 is rotatably connected in the housing 1, and the breaking rod 11 is fixedly connected to the driving rod 8. A through hole for the driving rod 8 to pass through is provided in the grinding disc 10, and the grinding disc 10 is rotatably connected to the driving rod 8. The rotating sleeve 1301 is sleeved on the driving rod 8, and the rotating sleeve 1301 is fixedly connected to the grinding disc 10, and the toothed disc 1305 is fixedly connected to the driving rod 8. The three driven gears 1303 are all rotatably connected to the toothed disc 1305, the driving gear 1304 is fixedly connected to the driving rod 8, the driving gear 1304 is meshed with the driven gear 1303, and the inner gear ring 1302 is fixedly connected to the rotating sleeve 1301. The inner gear ring 1302 is meshed with the three driven gears 1303. The grinding cylinder 9 is fixedly connected with a plurality of short-circuit rods 16 along the outer surface. The short-circuit rods 16 are fixedly connected to the inner wall of the shell 1. The driving rod 8 can be driven to rotate by starting the grinding motor 5. The driving rod 8 is used to drive the breaking rod 11 to rotate and cooperate with the falling channel to grind large-particle imidacloprid powder. The rotation of the driving rod 8 can drive the active gear 1304 to rotate accordingly. The transmission of the active gear 1304 and the driven gear 1303 can make the inner gear ring 1302 drive the rotating sleeve 1301 to rotate in the opposite direction to the driving rod 8, so that the breaking rod 11 and the grinding disc 10 are coaxially reversed, thereby avoiding the situation where the breaking rod 11 and the grinding disc 10 rotate in the same direction and the breaking effect is deteriorated.

[0055] It can be understood that the air supply part is close to the inner wall of the shell 1; and / or the dispersion part is located below the drop port. By adjusting the position of the dispersion part, large particles of imidacloprid powder in agglomerated state can fall into the dispersion part. A discharge pipe 2 is connected to the shell 1, and the conveying pipeline can be connected through the discharge pipe 2, so that the raw materials enter the shell 1 through the conveying pipeline and the discharge pipe 2, and continuous crushing processing can be realized.

[0056] Working principle:

[0057] After the imidacloprid powder enters the shell 1, the flow rate inside the gas delivery pipeline is adjusted by the pressure regulating device, and the gas is sprayed into the shell 1 through the nozzle 7, so that the imidacloprid powder mixed airflow rises and moves to the top of the grinding cylinder 9. At this time, the gas flow rate is weakened, and the air flow rate above the grinding component can only support the imidacloprid powder with a particle size that meets the production requirements. Qualified imidacloprid powder will enter the discharging rack 4, and the fan 3 can be started to blow small particles of imidacloprid powder to the discharging pipe 6, and collected through the discharging pipe 6, while unqualified large particles of imidacloprid powder will fall into the collecting port by gravity and enter the falling channel along the inclined surface to complete the screening. The grinding motor 5 can be started to drive the driving rod 8 to rotate, and the driving rod 8 is used to drive the grinding disc 10 to rotate and cooperate with the falling channel to grind large particles of imidacloprid powder. The ground imidacloprid powder will be affected by the heat generated by the grinding to form agglomerates, and During grinding, since the large particles of imidacloprid powder can generate vibrations between the grinding disc 10 and the falling channel, the imidacloprid powder in agglomerated state can automatically fall from the falling port under the action of gravity, and the driving rod 8 is used to drive the breaking rod 11 to rotate and cooperate with the falling channel to grind the large particles of imidacloprid powder. The rotation of the driving rod 8 can drive the active gear 1304 to rotate accordingly. The transmission of the active gear 1304 and the driven gear 1303 can make the internal gear ring 1302 drive the rotating sleeve 1301 to rotate in the opposite direction of the driving rod 8, so that the breaking rod 11 and the grinding disc 10 are coaxially reversed, and the breaking rod 11 is used to rotate to drive the breaking tool 14 and the air supply fan blades 15 to rotate, so that the breaking tool 14 breaks up the agglomerated state of the large particles of imidacloprid powder. The imidacloprid powder after breaking up will rise the mixed airflow again, and will be sieved again at the top of the grinding cylinder 9, thereby realizing continuous pulverization.

[0058] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, some simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A gas suspension type wettable imidacloprid powder pulverizing device, comprising a housing (1), wherein the housing (1) has a grinding space therein, characterized in that: The top of the shell (1) is provided with a discharge pipe (6), the bottom of the shell (1) is provided with a nozzle (7), a grinding component and a breaking component are provided in the shell (1), a gap exists between the grinding component and the inner wall of the shell (1), the air flow rate above the grinding component can only support imidacloprid powder with a particle size that meets the production requirements, and the grinding component is located above the breaking component; The grinding assembly has a collecting port and a dropping port, so that the imidacloprid powder can fall from the collecting port into the grinding assembly for grinding; after being ground, the imidacloprid powder leaves the grinding assembly from the dropping port and moves toward the breaking assembly under the action of gravity; The scattering assembly comprises a scattering rod (11), wherein the scattering rod (11) has a plurality of air supply blades (12); A transmission member (13) is provided in the housing (1), and the transmission member (13) is used to drive the grinding disc (10) and the beating rod (11) to rotate coaxially and reversely; The transmission member (13) comprises a rotating sleeve (1301), an inner gear ring (1302), three driven gears (1303), a driving gear (1304), and a toothed disc (1305); a driving rod (8) is rotatably connected in the housing (1); the breaking rod (11) is fixedly connected to the driving rod (8); a through hole for the driving rod (8) to pass through is formed in the grinding disc (10); the grinding disc (10) is rotatably connected to the driving rod (8); the rotating sleeve (1301) is sleeved on the driving rod (8), and the rotating sleeve (1301) is fixedly connected to the grinding disc (10), the toothed disc (1305) is fixedly connected to the driving rod (8), the three driven gears (1303) are all rotatably connected to the toothed disc (1305), the driving gear (1304) is fixedly connected to the driving rod (8), the driving gear (1304) is meshingly connected with the driven gear (1303), the inner gear ring (1302) is fixedly connected to the rotating sleeve (1301), and the inner gear ring (1302) is meshingly connected with the three driven gears (1303).

2. A gas suspension wettable imidacloprid powder pulverizing device according to claim 1, characterized in that: The cross-sectional area of ​​the bottom of the shell (1) is smaller than the cross-sectional area of ​​the top of the shell (1).

3. A gas suspension type wettable imidacloprid powder pulverizing device according to claim 1, characterized in that: The grinding assembly comprises a grinding disc (10), wherein the grinding disc (10) is rotatably connected to the top of the shell (1).

4. A gas suspension type wettable imidacloprid powder pulverizing device according to claim 3, characterized in that: The grinding assembly further comprises a grinding cylinder (9), wherein the grinding cylinder (9) is fixedly connected to the inner wall of the housing (1), the collecting port is arranged at the top of the grinding cylinder (9), and a falling channel connected to the collecting port is arranged inside the grinding cylinder (9), wherein the falling channel has a conical inner wall, so that the interior of the grinding cylinder (9) is in a shape with large ends and contracted in the middle; The grinding disc (10) is located inside the falling channel, the shape of the grinding disc (10) is adapted to the shape of the inner wall of the falling channel, the grinding disc (10) and the inner wall of the falling channel are gap-matched, the grinding disc (10) and the inner wall of the falling channel are used together to grind imidacloprid powder, and the gap between the grinding disc (10) and the lower end of the falling opening forms the falling opening.

5. A gas suspension type wettable imidacloprid powder pulverizing device according to claim 4, characterized in that: The collecting port has an inclined surface, and when the imidacloprid powder falls on the inclined surface, the imidacloprid powder slides along the inclined surface under the action of gravity.

6. A gas suspension type wettable imidacloprid powder pulverizing device according to claim 1, characterized in that: The air supply blade (12) comprises a breaking up portion and an air supply portion, and the air supply portion is capable of driving air to flow toward the discharge pipe (6) when the air supply blade (12) rotates.

7. A gas suspension type wettable imidacloprid powder pulverizing device according to claim 6, characterized in that: The air supply portion is close to the inner wall of the shell (1); And / or, the breaking up portion is located below the drop opening.

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