Pressurizing nozzle for jet mill

Abstract

The utility model relates to the technical field of jet mill pressurizing nozzles, and discloses a jet mill pressurizing nozzle which comprises an adjusting pipe, the left end of the adjusting pipe is fixedly connected with a threaded pipe, the inner wall of the adjusting pipe is fixedly connected with a fixing sleeve, the inner wall of the fixing sleeve is rotatably connected with a rotating block, and the inner wall of the rotating block is connected with an adjusting mechanism through a fixing shaft. A connecting rod is fixedly connected to the periphery of the rotating block, a baffle is fixedly connected to the periphery of the connecting rod, the baffle is slidably connected to the inner wall of the fixing sleeve, a variable-pressure pipe is fixedly connected to the right end of the fixing sleeve, and a spray head is fixedly connected to the right end of the adjusting pipe. According to the pressurizing nozzle, by means of the unique variable-pressure pipe structure, the circular truncated cone shape of the pressurizing nozzle and the through holes with different sizes in the left side and the right side, air flow is naturally accelerated and pressurized when passing through the variable-pressure pipe, and the speed and the pressure of the air flow can be flexibly adjusted according to different material characteristics and smashing requirements.

Description

Technical Field

[0001] This utility model relates to the field of airflow mill booster nozzle technology, and in particular to a booster nozzle for airflow mills. Background Technology

[0002] In modern industrial production, air jet mills, as highly efficient material pulverizing equipment, are widely used in many fields such as chemical engineering, mining, and new materials. The nozzle of the air jet mill, as its core component, plays a crucial role in the pulverizing effect and production efficiency of the equipment. It converts high-pressure gas into high-speed airflow, utilizing the kinetic energy of the airflow to impact the material, thereby achieving the purpose of pulverization. In actual production processes, different materials have varying characteristics, such as hardness, particle size, and brittleness, which places diverse demands on the performance of the air jet mill nozzle.

[0003] Currently, most ordinary nozzles employ a fixed structure, limiting the acceleration and pressurization effect of airflow as it passes through. Their internal channel shape and size are fixed, making flexible adjustments impossible to meet the pulverization requirements of different materials. When processing materials with high hardness, insufficient airflow velocity and pressure make it difficult to fully pulverize the material in a short time, resulting in low production efficiency and increased production costs. Furthermore, for materials with strict particle size distribution requirements, ordinary nozzles cannot precisely control the airflow velocity, easily leading to over-pulverization or under-pulverization, affecting product quality stability. To address this technical problem, this application proposes a pressurizing nozzle for airflow mills. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pressure boosting nozzle for airflow mills. This pressure boosting nozzle utilizes a unique pressure-changing tube structure, with its frustum shape and through holes of different sizes on the left and right sides, to allow the airflow to be naturally accelerated and pressurized as it passes through the pressure-changing tube. Furthermore, the airflow speed and pressure can be flexibly adjusted according to different material characteristics and pulverization requirements.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A pressurizing nozzle for an air jet mill includes an adjusting tube, a threaded tube fixedly connected to the left end of the adjusting tube, a fixed sleeve fixedly connected to the inner wall of the adjusting tube, a rotating block rotatably connected to the inner wall of the fixed sleeve, an adjusting mechanism connected to the inner wall of the rotating block via a fixed shaft, a connecting rod fixedly connected to the outer periphery of the rotating block, a baffle fixedly connected to the outer periphery of the connecting rod, the baffle slidably connected to the inner wall of the fixed sleeve, a transformer tube fixedly connected to the right end of the fixed sleeve, and a nozzle fixedly connected to the right end of the adjusting tube.

[0007] Furthermore, the adjustment mechanism includes a worm gear located on the inner wall of the rotating block and connected to a fixed shaft. The front end of the worm gear is engaged with a worm wheel, the inner wall of the worm wheel is fixedly connected to a rotating rod, and the top end of the rotating rod is fixedly connected to a rotating component.

[0008] Furthermore, the rotating assembly includes a knob located at the top of the rotating rod, the knob being rotatably connected to the top of the adjusting tube, and a limit ring being fixedly connected to the bottom of the knob, the limit ring being rotatably connected to the inner wall of the adjusting tube.

[0009] Furthermore, the outer wall of the knob is provided with anti-slip strips.

[0010] Furthermore, a fixed platform is fixedly connected to the left end of the fixed sleeve, and the rotating rod is rotatably connected to the inner wall of the fixed platform.

[0011] Furthermore, the transformer tube is shaped like a frustum, with a through hole on the left side and a through hole on the right side. The two through holes are connected, and the left through hole is larger than the right through hole.

[0012] Furthermore, the outer wall of the threaded tube is provided with a threaded groove, and a gasket is provided on the right side of the outer wall of the threaded tube.

[0013] This utility model has the following beneficial effects:

[0014] In this invention, the booster nozzle, through its unique transformer tube structure, utilizes its frustum shape and through holes of different sizes on the left and right sides to allow the airflow to naturally accelerate and pressurize as it passes through the transformer tube. In actual use, compared with ordinary nozzles, it can effectively increase the speed and pressure of the airflow, enhance the impact crushing ability on materials, and thus improve the working efficiency of the airflow mill.

[0015] In this invention, the airflow speed and pressure can be flexibly adjusted according to different material characteristics and pulverization requirements. When processing materials with different particle size requirements, the airflow speed can be precisely controlled to avoid over-pulverization or under-pulverization, ensuring the stability of product quality. This adjustability greatly improves the applicability of the nozzle, enabling it to meet the needs of various working scenarios. Attached Figure Description

[0016] Figure 1 This is a perspective view of a pressure boosting nozzle for an airflow mill proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the transformer structure of a booster nozzle for an airflow mill proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the fixed platform structure for a pressure boosting nozzle for an airflow mill proposed in this utility model;

[0019] Figure 4 for Figure 3 Enlarged view of point A;

[0020] Figure 5 This is a schematic diagram of the baffle structure of a pressure boosting nozzle for an airflow mill proposed in this utility model;

[0021] Figure 6 This is a schematic diagram of the worm gear structure of a pressure boosting nozzle for an airflow mill proposed in this utility model.

[0022] Legend:

[0023] 1. Adjusting pipe; 2. Threaded pipe; 3. Gasket; 4. Nozzle; 5. Fixing sleeve; 6. Transformer pipe; 7. Fixing platform; 8. Rotating rod; 9. Worm gear; 10. Worm; 11. Rotating block; 12. Connecting rod; 13. Baffle; 14. Limiting ring; 15. Knob. Detailed Implementation

[0024] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figure 2 , Figure 3 and Figure 5 An embodiment of this utility model provides a pressure boosting nozzle for an air mill, comprising an adjusting pipe 1, a threaded pipe 2 fixedly connected to the left end of the adjusting pipe 1, a fixed sleeve 5 fixedly connected to the inner wall of the adjusting pipe 1, a rotating block 11 rotatably connected to the inner wall of the fixed sleeve 5, a worm gear 10 and a worm wheel 9 connected to the inner wall of the rotating block 11 via a fixed shaft, a connecting rod 12 fixedly connected to the outer periphery of the rotating block 11, a baffle 13 fixedly connected to the outer periphery of the connecting rod 12, the baffle 13 slidably connected to the inner wall of the fixed sleeve 5, a transformer pipe 6 fixedly connected to the right end of the fixed sleeve 5, and a nozzle 4 fixedly connected to the right end of the adjusting pipe 1.

[0026] Specifically, when the air mill is started, the airflow enters the regulating pipe 1. The regulating pipe 1 serves as the airflow transmission channel, guiding the airflow to flow stably to the subsequent components. The airflow then passes through the fixed sleeve 5, which supports and positions the internal rotatable components, ensuring the stable operation of components such as the rotating block 11. When it reaches the transformer pipe 6, since the transformer pipe 6 is truncated cone-shaped and the through holes on the left and right sides are connected, with the left through hole being larger than the right through hole, according to the principles of fluid mechanics, the airflow will accelerate in the constricted channel when passing through the transformer pipe 6, thereby increasing the flow velocity. The accelerated airflow continues to move forward, reaching the nozzle 4, and finally being sprayed out from the nozzle 4 to perform operations such as crushing the material.

[0027] Reference Figure 1 , Figure 4 and Figure 6 The worm 10 is located on the inner wall of the rotating block 11 and connected to the fixed shaft. The front end of the worm 10 is meshed with the worm wheel 9. The inner wall of the worm wheel 9 is fixedly connected to the rotating rod 8. The top of the rotating rod 8 is fixedly connected to the knob 15. The knob 15 is rotatably connected to the top of the adjusting tube 1. The bottom end of the knob 15 is fixedly connected to the limit ring 14. The limit ring 14 is rotatably connected to the inner wall of the adjusting tube 1. The outer wall of the knob 15 is provided with an anti-slip strip. The left end of the fixed sleeve 5 is fixedly connected to the fixed platform 7. The rotating rod 8 is rotatably connected to the inner wall of the fixed platform 7. The transformer tube 6 is in the shape of a frustum. The left side of the transformer tube 6 is provided with a through hole. The right side of the transformer tube 6 is also provided with a through hole. The two through holes are connected, and the left through hole is larger than the right through hole. The outer wall of the threaded tube 2 is provided with a threaded groove. The right side of the outer wall of the threaded tube 2 is provided with a gasket 3.

[0028] Specifically, when the knob 15 is manually rotated, the anti-slip strip on the outer wall of the knob 15 increases friction, making it easier for the user to operate. When the knob 15 is rotated, it drives the rotating rod 8, which is fixedly connected to it, to rotate. The rotating rod 8 is fixedly connected to the worm wheel 9, so the worm wheel 9 rotates accordingly. The worm wheel 9 meshes with the worm 10, and the rotation of the worm wheel 9 drives the worm 10 to rotate. The worm 10 is connected to the rotating block 11 through a fixed shaft, which in turn drives the rotating block 11 to rotate. The connecting rod 12, which is fixedly connected to the outer periphery of the rotating block 11, rotates with the rotation of the rotating block 11. The connecting rod 12 then drives the baffle 13 to rotate. When it is necessary to increase the flow rate, rotating the knob 15 causes the baffle 13 to block part of the gap in the transformer tube 6. This reduces the effective flow area of ​​the transformer tube 6, and the flow rate of the airflow will further increase. Conversely, when it is necessary to increase the flow rate, the knob 15 is rotated to make the baffle 13 block part of the gap in the transformer tube 6. This reduces the effective flow area of ​​the transformer tube 6, and the flow rate of the airflow will further increase. To reduce the flow rate, rotate knob 15 to remove the baffle 13 from blocking the transformer tube 6, restoring the effective flow area of ​​the transformer tube 6 and reducing the airflow velocity accordingly. During the entire adjustment process, the limiting ring 14, which is fixedly connected to the bottom of knob 15, rotates on the inner wall of the regulating tube 1, acting as a limit to prevent excessive rotation of knob 15. Rotating rod 8 is rotatably connected to the inner wall of fixed platform 7, which is fixed to the left end of fixed sleeve 5, providing stable support for rotating rod 8 and ensuring smooth operation of rotating parts. Threaded tube 2 is used to connect with the air jet nozzle of the air mill. The threaded connection with the nozzle is achieved through the threaded groove on the outer wall, ensuring that the nozzle is installed firmly. Gasket 3 is located on the right side of the outer wall of threaded tube 2, acting as a seal and buffer to prevent airflow leakage and protect the threaded connection from vibration and other factors.

[0029] Working principle: After connecting the nozzle to the air jet port of the air mill through the threaded pipe 2, start the air mill. The generated airflow will enter the regulating pipe 1, pass through the fixed sleeve 5 and reach the transformer pipe 6. Because the left and right ends of the transformer pipe 6 are connected and the left opening is larger than the right opening, the airflow velocity will increase when the airflow passes through the transformer pipe 6. Then the airflow will reach the nozzle 4 and finally be sprayed out through the nozzle 4. When it is necessary to adjust the airflow velocity, the knob 15 can be turned, which will drive the worm gear 9 to continue to rotate through the rotating rod 8. Under the action of the meshing of the worm gear 9 and the worm 10, the rotating block 11 will be driven to rotate through the worm 10, which will drive the baffle 13 to rotate through the connecting rod 12. When it is necessary to increase the flow velocity, simply turn the knob 15 to make the baffle 13 block part of the gap in the transformer pipe 6. Conversely, turn the knob to release the baffle 13 from blocking the transformer pipe 6.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure-boosting nozzle for an air jet mill, characterized in that: The device includes an adjusting pipe (1), a threaded pipe (2) fixedly connected to the left end of the adjusting pipe (1), a fixed sleeve (5) fixedly connected to the inner wall of the adjusting pipe (1), a rotating block (11) rotatably connected to the inner wall of the fixed sleeve (5), an adjusting mechanism connected to the inner wall of the rotating block (11) via a fixed shaft, a connecting rod (12) fixedly connected to the outer periphery of the rotating block (11), a baffle (13) fixedly connected to the outer periphery of the connecting rod (12), the baffle (13) slidably connected to the inner wall of the fixed sleeve (5), a transformer pipe (6) fixedly connected to the right end of the fixed sleeve (5), and a nozzle (4) fixedly connected to the right end of the adjusting pipe (1).

2. The booster nozzle for an airflow mill according to claim 1, characterized in that: The adjustment mechanism includes a worm (10) located on the inner wall of the rotating block (11) and connected by a fixed shaft. The front end of the worm (10) is engaged with a worm wheel (9). The inner wall of the worm wheel (9) is fixedly connected with a rotating rod (8). The top end of the rotating rod (8) is fixedly connected with a rotating component.

3. A booster nozzle for an airflow mill according to claim 2, characterized in that: The rotating assembly includes a knob (15) located at the top of the rotating rod (8), the knob (15) being rotatably connected to the top of the adjusting tube (1), and a limit ring (14) being fixedly connected to the bottom of the knob (15), the limit ring (14) being rotatably connected to the inner wall of the adjusting tube (1).

4. A booster nozzle for an airflow mill according to claim 3, characterized in that: The outer wall of the knob (15) is provided with anti-slip strips.

5. A booster nozzle for an airflow mill according to claim 2, characterized in that: The left end of the fixed sleeve (5) is fixedly connected to the fixed platform (7), and the rotating rod (8) is rotatably connected to the inner wall of the fixed platform (7).

6. A booster nozzle for an airflow mill according to claim 1, characterized in that: The transformer tube (6) is in the shape of a frustum. A through hole is opened on the left side of the transformer tube (6), and a through hole is also opened on the right side of the transformer tube (6). The two through holes are connected, and the through hole on the left side is larger than the through hole on the right side.

7. A booster nozzle for an airflow mill according to claim 1, characterized in that: The outer wall of the threaded tube (2) is provided with a threaded groove, and a gasket (3) is provided on the right side of the outer wall of the threaded tube (2).

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