Airflow pulverization mill with nozzle convenient to replace

Abstract

The utility model relates to the technical field of boron carbide production, in particular to a jet mill convenient to replace a nozzle, which comprises a gas transmission mechanism, a gas inlet pipe is inserted into the gas outlet end of the gas transmission mechanism, the top wall of the gas inlet pipe is rotatably connected with a moving mechanism, the outer wall of the moving mechanism is screwed with a sliding block, the nozzle is clamped in the sliding block, and the nozzle is connected with the gas transmission mechanism. The air outlet ends of the air inlet pipes are inserted into the left side and the right side of the grinding cavity, a grading mechanism transversely penetrates through the outer wall of one side of the grinding cavity, the air outlet pipes are inserted into the other end of the grading mechanism, and a feeding pipe is inserted into the position, under the grading mechanism, of the grinding cavity. According to the improved jet mill, through a second sliding groove and a moving mechanism, a nozzle can be conveniently and rapidly mounted and dismounted, mutual slippage of a sliding block and the nozzle can be avoided through the adsorption function of a first magnetic attraction piece and a second magnetic attraction piece, operation safety is ensured, local abrasion can be reduced through the design of a conical pipeline, a spiral pipeline and an inverted-conical pipeline in the nozzle, and the service life of the nozzle is prolonged. The crushing operation is improved.

Description

Technical Field

[0001] This utility model relates to the field of boron carbide production technology, specifically to an airflow pulverizer mill with easily replaceable nozzles. Background Technology

[0002] Boron carbide is an extremely hard ceramic material, ranking as the third hardest material after diamond and cubic boron nitride, possessing exceptional hardness and wear resistance. Its lower density than many metals makes it highly sought after in aerospace and military applications. Boron carbide has a high melting point and good thermal stability, maintaining structural stability even at high temperatures. It also exhibits excellent resistance to corrosion from many chemicals, including acids and alkalis.

[0003] An air jet mill is a device that uses a high-speed airflow to pulverize solid materials. It accelerates the material to extremely high speeds using high-pressure gas (usually air), achieving pulverization through high-speed collisions and friction. Air jet mills are widely used in industries such as chemical, pharmaceutical, food, mineral processing, ceramics, and plastics. They utilize the powerful kinetic energy generated by the high-speed airflow to cause material particles to collide and rub against each other, thus achieving highly efficient pulverization.

[0004] In the process of realizing this utility model, the inventors discovered the following problems with the existing technology: 1. Existing air jet mills are often fixed in place, and it is difficult to quickly disassemble them when replacement or maintenance is required; 2. Existing air jet mills require a relatively cumbersome installation process and the use of disassembly tools, which is time-consuming and labor-intensive. At the same time, the nozzles are prone to wear during long-term use, thereby reducing the jetting efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide an airflow pulverizer mill with easily replaceable nozzles, to solve the problems mentioned in the background art, such as existing airflow pulverizer mills being often fixedly installed, making it difficult to quickly disassemble them when replacement or maintenance is needed, and the cumbersome installation process requiring disassembly tools, which is time-consuming and labor-intensive. Furthermore, the nozzles are prone to internal wear during long-term use, reducing spray efficiency. To achieve the above objectives, this utility model provides the following technical solution: an airflow pulverizer mill with easily replaceable nozzles, including an air supply mechanism. An air inlet pipe is inserted into the air outlet end of the air supply mechanism. A moving mechanism is rotatably connected to the top wall of the air inlet pipe. A slider is screwed onto the outer wall of the moving mechanism, and a nozzle is engaged inside the slider. The air outlet end of the air inlet pipe is inserted into the left and right sides of the grinding chamber. A grading mechanism extends transversely through one outer wall of the grinding chamber, and an air outlet pipe is inserted into the other end of the grading mechanism. A feed pipe is inserted into the grinding chamber directly below the grading mechanism.

[0006] More preferably, the inner walls of the upper and lower sides of the intake pipe are provided with first sliding grooves, and the inner walls of the left and right sides of the intake pipe are provided with second sliding grooves.

[0007] More preferably, the gas delivery mechanism includes a high-pressure air pump, a gas delivery pipe, a gas intake pipe, and a slide bar. The two outlets of the high-pressure air pump are each connected to a gas delivery pipe. The top of each of the two gas delivery pipes is provided with a gas intake pipe. The upper and lower outer walls of the gas intake pipe are provided with slide bars, which are slidably connected to the inside of the first groove.

[0008] More preferably, the moving mechanism includes an adjusting screw, a handle sleeve, and an anti-slip rubber layer. The top end of the adjusting screw is rotatably connected to the top wall of the second sliding groove, the handle sleeve is engaged with the tail end of the adjusting screw, and the anti-slip rubber layer is provided on the inner wall of the handle sleeve.

[0009] More preferably, the slider includes a first magnetic attracting piece, a stop block, a slot, and a compression spring. The slot is opened on the opposite side of the slider, the compression spring is welded between the slot and the stop block, the stop block is slidably connected to the inner wall of the slot, and the first magnetic attracting piece is respectively disposed on the opposite side of the stop block and the slot.

[0010] More preferably, the nozzle has three sections inside its pipe: the end near the air intake pipe is a conical pipe, the end near the inside of the grinding chamber is an inverted conical pipe, and a spiral pipe is formed between the conical pipe and the inverted conical pipe. The nozzle has inserts on the outer walls of its left and right sides, and a second magnetic plate is provided on the inner wall of the opposite side of the inserts. The inserts and slots engage with each other.

[0011] More preferably, the grading mechanism includes a drive motor, a grading wheel, and a rotating shaft. The output end of the drive motor is connected to one end of the rotating shaft, the other end of the rotating shaft is connected to the grading wheel, and the outlet of the grading wheel is connected to an air outlet pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] In this invention, the design of the second sliding groove provides a path for the slider to slide in and out, facilitating quick installation and disassembly of the slider and the air inlet pipe. The design of the first sliding groove ensures that the air inlet pipe follows a fixed path and is precisely aligned with the air inlet of the nozzle, thereby ensuring smooth airflow and pulverizing efficiency. At the same time, the design of the adjusting screw and the handle allows for adjustment of the nozzle's insertion and sliding out, enabling quick installation and disassembly of the nozzle without the need for complex tools or a large amount of manpower. This significantly reduces the time required for maintenance and nozzle replacement, improving overall production efficiency. The anti-slip rubber layer helps the handle to be securely fitted onto the outer wall of the bottom end of the adjusting screw, and allows the operator to easily grip the handle to adjust the screw and control its rotation, improving operating efficiency and installation. The adjusting screw allows the operator to precisely control the position of the slider and nozzle in the air inlet pipe, ensuring that the nozzle can extend into the grinding chamber for airflow injection.

[0014] In this invention, the adsorption function of the first magnetic absorbing piece in the slider and the second magnetic absorbing piece located at both ends of the insert in the nozzle allows the nozzle and slider to be tightly adsorbed together, thus preventing positional displacement and slippage of the slider and nozzle during use, ensuring connection stability and operational safety. The compression and release of the compression spring maintains an appropriate gap between the slot and the stop block, ensuring that the insert can be easily inserted and removed. Disassembling the nozzle is also easy with simple operation, greatly improving the efficiency of nozzle replacement. The design of the conical pipe inside the nozzle helps to accelerate the airflow and increase the airflow input speed, providing greater kinetic energy for crushing. The design of the spiral pipe can evenly distribute the airflow, driving the gas to flow in a spiral, reducing local wear and blockage. The design of the inverted conical pipe can control the diffusion angle of the airflow when it is ejected from the nozzle, achieving more concentrated spraying and more efficient crushing operation. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of the present invention;

[0016] Figure 2 This is a frontal cross-sectional view of the present invention.

[0017] Figure 3 This is a schematic diagram of the gas delivery mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the moving mechanism structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the nozzle structure of this utility model.

[0020] In the diagram: 1. Gas delivery mechanism; 101. High-pressure air pump; 102. Gas delivery pipe; 103. Air intake pipe; 104. Sliding bar; 2. Air inlet pipe; 201. First sliding groove; 202. Second sliding groove; 3. Moving mechanism; 301. Adjusting screw; 302. Handle sleeve; 303. Anti-slip rubber layer; 4. Sliding block; 401. First magnetic suction piece; 402. Abutment block; 403. Slot; 404. Compression spring component; 5. Nozzle; 501. Conical pipe; 502. Inverted conical pipe; 503. Spiral pipe; 504. Insert bar; 505. Second magnetic suction piece; 6. Grinding chamber; 7. Grading mechanism; 701. Drive motor; 702. Grading wheel; 703. Rotating shaft; 8. Air outlet pipe; 9. Feed pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1 to 5 This utility model provides a technical solution: an airflow pulverizer that facilitates nozzle replacement, including an air supply mechanism 1, an air inlet pipe 2 inserted into the air outlet end of the air supply mechanism 1, a moving mechanism 3 rotatably connected to the top wall of the air inlet pipe 2, a slider 4 screwed onto the outer wall of the moving mechanism 3, a nozzle 5 engaged inside the slider 4, the air outlet end of the air inlet pipe 2 inserted into the left and right sides of the grinding chamber 6, a grading mechanism 7 transversely penetrating one side of the outer wall of the grinding chamber 6, an air outlet pipe 8 inserted into the other end of the grading mechanism 7, and a feed pipe 9 inserted into the grinding chamber 6 directly below the grading mechanism 7.

[0023] In this embodiment, as Figure 4As shown, the inner walls of the upper and lower sides of the air intake pipe 2 are provided with first sliding grooves 201, and the inner walls of the left and right sides of the air intake pipe 2 are provided with second sliding grooves 202. It should be noted that when using this utility model, the operator needs to first assemble the air intake pipe 2 with the nozzle 5 and the air delivery mechanism 1 respectively. First, screw the sliders 4 that engage on the left and right sides of the nozzle 5 to the outer wall of the moving mechanism 3 provided in the second sliding groove 202, and adjust the entire nozzle 5 to the desired position through the moving mechanism 3. Then, the specific installation with the air delivery mechanism 1 is to first insert the air intake pipe 103 in the air delivery mechanism 1 into the air outlet of the air intake pipe 2. At this time, the sliders 104 provided on the upper and lower sides of the air intake pipe 103 will fit against the first sliding groove 201. The slide is moved until the outlet end of the air intake pipe 103 is tightly fitted to the air inlet of the nozzle 5, completing the installation. In actual use, the design of the second slide groove 202 provides a path for the slider 4 to slide in and out, which facilitates the quick installation and disassembly of the nozzle 5 and the slider 4 with the air intake pipe 2. This makes it easier to maintain and replace worn nozzles 5 and improve the operating efficiency of the equipment. The design of the first slide groove 201 ensures that the air intake pipe 103 follows a fixed path and is accurately aligned with the air inlet of the nozzle 5, thereby ensuring smooth airflow and pulverization efficiency. At the same time, since the nozzle 5 and the air intake pipe 103 can fit tightly, the risk of wear and airflow leakage is reduced, and the sealing performance and operational stability of the system are improved.

[0024] In this embodiment, as Figure 2 and Figure 3As shown, the gas delivery mechanism 1 includes a high-pressure air pump 101, a gas delivery pipe 102, a gas intake pipe 103, and a slide bar 104. Both outlets of the high-pressure air pump 101 are connected to gas delivery pipes 102. Each of the two gas delivery pipes 102 has a gas intake pipe 103 at its top. Slide bars 104 are provided on the upper and lower outer walls of the gas intake pipe 103, and the slide bars 104 are slidably connected inside the first sliding groove 201. It should be noted that the operator needs to first insert the gas intake pipe 103 into the air inlet pipe 2, and then slide it along the slide bars 104 on the upper and lower sides of the gas intake pipe 103 against the inside of the first sliding groove 201 until the gas intake pipe 103 is slid into the air inlet pipe 2 and its outlet end is tightly fitted against the air inlet of the nozzle 5. At this point, the high-pressure air pump 101 is started. High-pressure gas is simultaneously delivered to two gas supply pipes 102 through two outlets, and pushed along the pipes into the air intake pipe 103. Finally, the high-pressure gas is introduced into the nozzle 5 through the air intake pipe 103 and ejected from it, thereby crushing the material inside the grinding chamber 6. In actual use, the high-pressure air pump 101 provides strong airflow power to ensure that the gas can pass through the nozzle 5 at high speed, thereby effectively crushing the material inside the grinding chamber 6. The design of the gas supply pipe 102 and the air intake pipe 103 can precisely control the flow direction and pressure of the gas, which helps to accurately adjust the crushing process. The design of the air intake pipe 103 and the slide bar 104 also makes the replacement process of the nozzle 5 simpler and faster, reducing maintenance time and operational complexity.

[0025] In this embodiment, as Figure 4As shown, the moving mechanism 3 includes an adjusting screw 301, a handle sleeve 302, and an anti-slip rubber layer 303. The top end of the adjusting screw 301 is rotatably connected to the top wall of the second slide groove 202, and the handle sleeve 302 is engaged with the tail end of the adjusting screw 301. The anti-slip rubber layer 303 is provided on the inner wall of the handle sleeve 302. It should be noted that the operator can first insert the adjusting screw 301 through the slider 4 that engages with the nozzle 5, and then engage the handle sleeve 302 with the adjusting screw 301. At the tail end of 1, the anti-slip rubber layer 303 on the inner wall of the handle sleeve 302 will tightly adhere to the outer wall of the tail end of the adjusting screw 301. Then, the operator can rotate the handle sleeves 302 on both the left and right sides at the same time, causing the adjusting screw 301, which is engaged with it, to start rotating on the top wall of the second slide groove 202. At the same time, the slider 4 will move along the thread direction with the nozzle 5 until the nozzle 5 is moved into the interior of the grinding chamber 6. When the nozzle 5 needs to be replaced, it is only necessary to reverse the direction. Rotating the two side grips 302 causes the adjusting screw 301 to rotate in the opposite direction, thereby causing the slider 4 to move the nozzle 5 back to the tail end of the adjusting screw 301. At this point, removing the grips 302 allows the slider 4 and nozzle 5 to be removed together. In actual use, the design of the adjusting screw 301 and grips 302 allows for adjustment of the insertion and sliding of the nozzle 5, enabling quick installation and removal of the nozzle 5 without the need for complex tools or a large amount of manpower. This significantly reduces the time required for maintenance and replacement of the nozzle 5, improving overall production efficiency. The anti-slip rubber layer 303 helps the grips 302 to be securely fitted onto the bottom outer wall of the adjusting screw 301, and allows the operator to hold the grips 302 to control the rotation of the adjusting screw 301, improving operating efficiency and installation. The adjusting screw 301 allows the operator to precisely control the position of the slider 4 and nozzle 5 in the air intake pipe 2, ensuring that the nozzle 5 can extend into the grinding chamber 6 for airflow injection.

[0026] In this embodiment, as Figure 5As shown, the slider 4 includes a first magnetic absorbing piece 401, a stop block 402, a slot 403, and a compression spring 404. The slot 403 is located on the opposite side of the slider 4. The compression spring 404 is welded between the slot 403 and the stop block 402. The stop block 402 is slidably connected to the inner wall of the slot 403. The first magnetic absorbing piece 401 is respectively located on the opposite side of the stop block 402 and the slot 403. It should be noted that before using this utility model, the operator needs to first assemble the slider 4 and the nozzle 5 together. By inserting one end of the insert strips 504 on the left and right sides of the nozzle 5 into the slot 403, the end face of the insert strip 504 will press the stop block 402, thereby pushing and shortening the compression spring 404 welded between the slot 403 and the stop block 402, thereby widening the gap between the stop block 402 and the slot 403 so that it can fully accommodate the insertion of the insert strip 504. At the same time, the magnetic absorbing piece 401 is located on the opposite side of the stop block 402 and the slot 403. The first magnetic absorbing piece 401 on the side will also be attracted together with the second magnetic absorbing pieces 505 at both ends of the insert 504, thus completing the assembly between the slider 4 and the nozzle 5. When disassembly is required, simply press the insert 504 on both sides of the nozzle 5 manually to squeeze the abutment 402 and the compression spring 404, thereby widening the gap between the abutment 402 and the slot 403, and the entire nozzle 5 can be removed. In actual use, the attraction function of the first magnetic absorbing piece 401 can tightly attract the nozzle 5 and the slider 4 together, thereby preventing the slider 4 and the nozzle 5 from shifting or slipping during use, ensuring the stability of the connection and the safety of operation. The compression and release of the compression spring 404 can maintain an appropriate gap between the slot 403 and the abutment 402, ensuring that the insert 504 can be easily inserted and removed. Disassembling the nozzle 5 is also easy with simple operation, greatly improving the efficiency of replacing the nozzle 5.

[0027] In this embodiment, as Figure 5As shown, the nozzle 5 has three internal pipe sections. The end near the air intake pipe 103 is a conical pipe 501, the end near the inside of the grinding chamber 6 is an inverted conical pipe 502, and a spiral pipe 503 is formed between the conical pipe 501 and the inverted conical pipe 502. Inserts 504 are provided on the outer walls of the left and right sides of the nozzle 5, and second magnetic plates 505 are provided on the inner walls of the opposite sides of the inserts 504. The inserts 504 engage with the slots 403. It should be noted that when the operator inserts the inserts 504 on the left and right sides of the nozzle 5 into the slots 403, the second magnetic plates 505 on the opposite sides of the inserts 504 will tightly adhere to the first magnetic plates 401 on the end faces of the abutment 402 and the slot 403, respectively, thus completing the assembly between the slider 4 and the nozzle 5. When the gas supply mechanism 1 supplies gas to the inside of the nozzle 5, the high-pressure gas is transported to the conical pipe 501 through the air intake pipe 103. The path narrows and enters the spiral pipe 503, forming a spiral airflow that is transported forward to the inverted conical pipe 502, and finally sprayed into the grinding chamber 6 to crush the material inside. In actual use, the design of the conical pipe 501 helps to accelerate the airflow, increase the airflow input speed, and provide greater kinetic energy for crushing. At the same time, the inlet end of the conical pipe 501 can reduce the turbulence when the airflow enters, which helps the airflow stability. The design of the middle section spiral pipe 503 can evenly distribute the airflow, which drives the gas spiral flow and helps the jet airflow to be evenly distributed inside the pipe, reducing local wear and blockage. Finally, the design of the inverted conical pipe 502 can control the diffusion of the airflow. Its inverted conical structure helps to control the diffusion angle of the airflow when it is ejected from the nozzle 5, achieving a more concentrated jet, which enables more efficient crushing of materials. At the same time, the inverted conical pipe 502 also helps to reduce the direct impact of the airflow on the outlet end of the nozzle 5, reducing wear.

[0028] In this embodiment, as Figure 1 and Figure 2As shown, the grading mechanism 7 includes a drive motor 701, a grading wheel 702, and a rotating shaft 703. The output end of the drive motor 701 is connected to one end of the rotating shaft 703, and the other end of the rotating shaft 703 is connected to the grading wheel 702. An air outlet pipe 8 is connected to the outlet of the grading wheel 702. It should be noted that the multiple high-pressure airflows sprayed from the nozzle 5 collide and rub against the material inside the grinding chamber 6, causing it to be pulverized. The pulverized material is then moved upwards to the grading mechanism 7 under the influence of the high-pressure airflow. Simultaneously, the operator can start the drive motor 701 to rotate the rotating shaft 703, thereby causing the grading wheel 702, which is connected to the other end of the rotating shaft 703, to rotate synchronously. During this process, the pulverized material passes through the grading wheel 702 and... Driven by the rotation, material particles that meet the standard size are pushed to the outlet pipe 8 and discharged from it by the rotating airflow. Material particles that do not meet the specifications will continue to remain in the grinding chamber 6 for further crushing. In actual use, the rotation of the classifying wheel 702 can effectively screen the crushed material, ensuring that only particles that meet the particle size requirements are discharged, improving product consistency and quality. At the same time, through effective classification, it ensures that the crushed material is discharged quickly, avoiding blockage in the grinding chamber 6, improving the equipment's processing capacity and output. Furthermore, the design of the classifying mechanism 7 can screen out excessively fine material particles, preventing them from being over-crushed in the grinding chamber 6, thereby reducing energy waste and material loss.

[0029] The usage and advantages of this utility model: This airflow pulverizer, which facilitates nozzle replacement, operates as follows:

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the operator first inserts one end of the insert strips 504 on both sides of the nozzle 5 into the slot 403. At this time, the end face of the insert strip 504 will press against the abutment 402, causing the compression spring 404 to shorten, thereby widening the gap between the abutment 402 and the slot 403, so that the insert strip 504 can be fully inserted. At the same time, the first magnetic piece 401 located on the opposite side of the abutment 402 and the slot 403 will be attracted together with the second magnetic pieces 505 located at both ends of the insert strip 504, completing the assembly between the slider 4 and the nozzle 5. Then, the operator can insert the adjusting screw 301 through the slider 4 that is engaged with the nozzle 5, and lock the sleeve 302 into the tail end of the adjusting screw 301, so that the anti-tampering mechanism is properly secured. The rubber layer 303 is tightly attached to the outer wall of the tail end of the adjusting screw 301. Then, the operator can simultaneously rotate the left and right sleeves 302, causing the adjusting screw 301 to rotate. During this process, the slider 4 will move along the thread direction with the nozzle 5 until the nozzle 5 is moved into the interior of the grinding chamber 6. Then, the operator slides the upper and lower sliders 104 of the air intake pipe 103 against the interior of the first sliding groove 201 until the air intake pipe 103 is slid into the air inlet pipe 2 and its outlet end is tightly attached to the air inlet of the nozzle 5. At this time, the high-pressure air pump 101 is started, and the high-pressure gas is simultaneously delivered to the two air supply pipes 102 through the two air outlets, and the high-pressure gas is pushed into the pipeline. The high-pressure gas is introduced into the conical pipe 501 through the air intake pipe 103. During this process, the gas delivery path narrows and enters the spiral pipe 503, forming a spiral airflow that is transported forward into the inverted conical pipe 502 and finally ejected from it. At the same time, material is fed into the grinding chamber 6 from the feed pipe 9. The airflow ejected from the nozzle 5 will crush the material. The crushed material will move upward to the classifying mechanism 7 under the drive of the high-pressure airflow. Meanwhile, the operator can start the drive motor 701 to drive the rotating shaft 703 connected to it to rotate, thereby driving the classifying wheel 702 connected to the other end of the rotating shaft 703 to rotate synchronously. During this process, the crushed material will pass through the classifying wheel 702 and be driven by it to rotate. During this process, material particles that meet the standard size are pushed to the outlet pipe 8 by the rotating airflow and discharged from it, while material particles that do not meet the standard size will continue to remain in the grinding chamber 6 for further crushing. When it is necessary to replace the nozzle 5, simply rotate the two side sleeves 302 in the opposite direction to drive the adjusting screw 301 to rotate in the opposite direction, so that the slider 4 and the nozzle 5 move back to the tail end position of the adjusting screw 301. Then, remove the sleeves 302 to remove the slider 4 and the nozzle 5 together. Then, manually press the inserts 504 on both sides of the nozzle 5 to squeeze the abutment 402 and the compression spring 404, and widen the gap between the abutment 402 and the slot 403, so that the entire nozzle 5 can be removed.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An airflow pulverizer with easily replaceable nozzles, comprising an air delivery mechanism (1), characterized in that: The air outlet of the air supply mechanism (1) is connected to an air inlet pipe (2). The top wall of the air inlet pipe (2) is rotatably connected to a moving mechanism (3). The outer wall of the moving mechanism (3) is screwed with a slider (4). The inside of the slider (4) is engaged with a nozzle (5). The air outlet of the air inlet pipe (2) is inserted into the left and right sides of the grinding chamber (6). A grading mechanism (7) runs horizontally through one side of the outer wall of the grinding chamber (6). The other end of the grading mechanism (7) is connected to an air outlet pipe (8). The grinding chamber (6) is located directly below the grading mechanism (7) and a feed pipe (9) is inserted.

2. The airflow pulverizer with easily replaceable nozzles according to claim 1, characterized in that: The upper and lower inner walls of the air intake pipe (2) are provided with first grooves (201), and the upper and lower inner walls of the air intake pipe (2) are provided with second grooves (202).

3. The airflow pulverizer with easily replaceable nozzles according to claim 2, characterized in that: The gas delivery mechanism (1) includes a high-pressure air pump (101), a gas delivery pipe (102), a gas intake pipe (103), and a slide bar (104). The two outlets of the high-pressure air pump (101) are each connected to a gas delivery pipe (102). The top of each of the two gas delivery pipes (102) is provided with a gas intake pipe (103). The upper and lower outer walls of the gas intake pipe (103) are provided with slide bars (104). The slide bars (104) are slidably connected inside the first sliding groove (201).

4. The airflow pulverizer with easily replaceable nozzles according to claim 2, characterized in that: The moving mechanism (3) includes an adjusting screw (301), a handle (302), and an anti-slip rubber layer (303). The top end of the adjusting screw (301) is rotatably connected to the top wall of the second slide groove (202). The handle (302) is engaged with the tail end of the adjusting screw (301). The anti-slip rubber layer (303) is provided on the inner wall of the handle (302).

5. The airflow pulverizer with easily replaceable nozzles according to claim 1, characterized in that: The slider (4) includes a first magnetic absorbing piece (401), a stop block (402), a slot (403), and a compression spring (404). The slot (403) is opened on the opposite side of the slider (4). The compression spring (404) is welded between the slot (403) and the stop block (402). The stop block (402) is slidably connected to the inner wall of the slot (403). The first magnetic absorbing piece (401) is respectively disposed on the opposite side of the stop block (402) and the slot (403).

6. The airflow pulverizer with easily replaceable nozzles according to claim 5, characterized in that: The nozzle (5) has three sections inside its pipe. The end near the air intake pipe (103) is a conical pipe (501), the end near the inside of the grinding chamber (6) is an inverted conical pipe (502), and a spiral pipe (503) is formed between the conical pipe (501) and the inverted conical pipe (502). The outer walls of the left and right sides of the nozzle (5) are provided with inserts (504), and the inner walls of the opposite sides of the inserts (504) are provided with second magnetic plates (505). The inserts (504) and the slots (403) engage with each other.

7. The airflow pulverizer with easily replaceable nozzles according to claim 1, characterized in that: The grading mechanism (7) includes a drive motor (701), a grading wheel (702), and a rotating shaft (703). The output end of the drive motor (701) is connected to one end of the rotating shaft (703), and the other end of the rotating shaft (703) is connected to the grading wheel (702). The outlet of the grading wheel (702) is connected to an air outlet pipe (8).

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