Fully automatic vertical jet mill with a tamper-proof connection structure

Abstract

A fully automatic vertical jet mill with a tamper-proof connection structure, comprising a jet mill (1), a nozzle (2) connected via a thread to the inner surface of the lower end of the jet mill (1), a flange (3) fixedly connected to the outer circumferential surface of the air inlet end of the nozzle (2), and a frame (4) arranged below the nozzle (2); characterized in that a tamper-proof device (5) is arranged below the jet mill (1), the tamper-proof device (5) comprising two mounting plates (51) each fixedly connected to both sides of the jet mill (1), grooves (52) formed in the undersides of the mounting plates (51), limit frames (53) engaged in the grooves (52), and a guide component (54) arranged above the limit frames (53).

Description

Technical area

[0001] The present utility model relates to the technical field of fully automatic vertical jet mills, in particular a fully automatic vertical jet mill with a tamper-proof connection structure. State of the art

[0002] The fully automatic vertical jet mill, a highly efficient device for producing ultrafine powders, is widely used in fields such as chemistry, pharmaceuticals, and new materials. Its operating principle is based primarily on the collision and friction of material particles within the grinding chamber by a high-speed airflow, resulting in ultrafine grinding and material classification. The nozzle for introducing the high-pressure airflow is a crucial component of the jet mill's operating system. Its mounting stability and tightness directly influence the energy transfer efficiency of the airflow, the grinding effect, and the continuity and safety of the device's operation.

[0003] In existing fully automatic vertical jet mills, the high-pressure air nozzle is typically attached to the main body of the unit via an external threaded connection. While this design is relatively simple with regard to initial assembly, disassembly, and maintenance, it has significant limitations in practical long-term operation. Because the nozzle must continuously deliver a high-pressure airflow, it is often structurally suspended. During operation, the counterforce generated by the high-velocity airflow, the airflow pulsation, and the overall vibration of the unit continuously act on the nozzle and its connection point. With a conventional threaded connection, long-term stress from such alternating loads and vibrations can easily lead to relative displacement or loosening of the threaded pair.During long-term operation, there is a risk of the connection between the nozzle and the air supply line becoming detached, which impairs the normal operation of the device. Content of the utility model

[0004] The purpose of this utility model is to provide a fully automatic vertical jet mill with a tamper-proof connection structure. The inclusion of a tamper-proof mechanism solves the problem that, in known fully automatic vertical jet mills, the connection between the nozzle and the unit lacks such a safety device, leading to the easy loosening of the connection between the nozzle and the air supply line.

[0005] The technical solution of the present utility model is described as follows: A fully automatic vertical jet mill with a tamper-proof connection structure comprises a jet mill, a nozzle connected via a thread to the inner surface of the lower end of the jet mill, a flange fixedly connected to the outer circumferential surface of the air inlet end of the nozzle, and a frame arranged below the nozzle. A tamper-proof mechanism is arranged below the jet mill, comprising two mounting plates, each fixedly connected to both sides of the jet mill, grooves formed in the undersides of the mounting plates, limit frames that engage in the grooves, and a guide component arranged above the limit frames.

[0006] Preferably, the guide component comprises a movable ring rotatably connected to the outer circumferential surface of the nozzle, locking pins that are each fixedly connected to the front and rear sides of the top of the movable ring, a locking ring arranged above the movable ring, and locking holes formed at the front and rear of the top of the locking ring.

[0007] Preferably, the frame is firmly connected to the outer circumferential surface of the jet mill, and fastening openings are formed at the four corners of the underside of the frame.

[0008] Preferably, the dimensions of the grooves are adapted to the boundary frames, and the boundary frames are in close contact with the mounting plates.

[0009] Preferably, the dimensions of the plug holes are adapted to the plug pins, and the plug pins are inserted into the plug holes.

[0010] Preferably, the upper ends of the plug pins are located above the top of the locking ring.

[0011] Preferably, the undersides of the boundary frames are firmly connected to the frame via screws, and several connection holes are formed in a circular arrangement on the front side of the flange.

[0012] Preferably, a connecting ring is firmly attached to the outer circumferential surface of the nozzle, and the top of the connecting ring is flush with the lower end of the jet mill.

[0013] The advantageous effect of the present utility model is as follows: By incorporating a locking mechanism, a mechanical support and limiting structure is added to the conventional threaded connection between the nozzle and the jet mill. The interaction of mounting plates, grooves, and limiting frames effectively restricts the displacement and loosening of the nozzle under vibration and the counterforce of the airflow, thus increasing the connection security between the nozzle and the external air supply line. The structure, consisting of a movable ring, locking pins, and a locking ring in the guide component, assists in quickly positioning the nozzle during assembly and maintains its vertical position, thereby ensuring precise thread alignment, improving assembly accuracy and efficiency, and further increasing the connection security between the nozzle and the external air supply line.The design of the connecting ring reinforces the connection strength between the nozzle and the main body and further increases the connection reliability between the nozzle and the external air supply line. The overall structure is simple and reliable. While retaining the original threaded connection type, the connection reliability of the nozzle is significantly improved, thereby increasing the resistance to loosening between the nozzle and the external air supply line and ensuring the long-term stable operation of the device. Description of the attached drawings

[0014] In order to explain the technical solution of the embodiments of the present utility model more clearly, a brief description of the drawings required to describe the embodiments is given below. Fig. Figure 1 is a perspective view of a fully automatic vertical jet mill with a tamper-proof connection structure; Fig. Figure 2 is a sectional view of a jet mill in the fully automatic vertical jet mill with a tamper-proof connection structure; Fig. Figure 3 is an assembly sequence diagram of a nozzle in the fully automatic vertical jet mill with a tamper-proof connection structure; Fig. Figure 4 shows a sectional view of a mounting plate in the fully automatic vertical jet mill with a tamper-proof connection structure; Fig. Figure 5 is a right side view of the fully automatic vertical jet mill with a tamper-proof connection structure.

[0015] Explanation of reference numbers: 1. Jet mill; 2. Nozzle; 3. Flange; 4. Frame; 5. Release lock; 51. Mounting plate; 52. Groove; 53. Limiting frame; 54. Guide component; 541. Movable ring; 542. Plug pin; 543. Locking ring; 544. Plug hole; 6. Mounting opening; 7. Connection hole; 8. Connection ring. Detailed description

[0016] The technical solutions of the embodiments of this utility model are described clearly and completely below with reference to the accompanying drawings. The described embodiments represent only a portion of the embodiments of this utility model, not all of them. Example 1

[0017] With reference to Fig. 1 and Fig. Section 4 describes the first embodiment of the present utility model, wherein this embodiment provides a fully automatic vertical jet mill with a tamper-proof connection structure. The fully automatic vertical jet mill with a tamper-proof connection structure comprises a jet mill 1, a nozzle 2 which is connected via a thread to the inner surface of the lower end of the jet mill 1, a flange 3 which is fixedly connected to the outer circumferential surface of the air inlet end of the nozzle 2, and a frame 4 which is arranged below the nozzle 2.A release device 5 is arranged below the jet mill 1, comprising two mounting plates 51, each rigidly connected to both sides of the jet mill 1, grooves 52 formed in the undersides of the mounting plates 51, limit frames 53 that engage in the grooves 52, and a guide component 54 arranged above the limit frames 53. The frame 4 is rigidly connected to the outer circumferential surface of the jet mill 1, and mounting openings 6 are formed at the four corners of the underside of the frame 4. The dimensions of the grooves 52 are adapted to the limit frames 53, and the limit frames 53 are in close contact with the mounting plates 51. The undersides of the limit frames 53 are rigidly connected to the frame 4 by screws, and several connection holes 7 are formed in a circular arrangement on the front side of the flange 3.

[0018] During operation, the jet mill 1 serves as the main unit and performs the function of ultra-fine grinding and classifying powders. Since its structural design and functions are based on established and mature technologies, they will not be discussed further here. The nozzle 2 is responsible for introducing the high-pressure airflow and providing the grinding force. Its mounting stability directly influences the airflow transmission efficiency and the operational reliability of the unit. The nozzle 2 is in close contact with the jet mill 1. The flange 3 is connected to the external air supply line via the circularly arranged connection holes 7, thus providing a stable air supply connection point and reinforcing the tightness of the connection. The frame 4 serves to mount the entire unit stably on the floor or a base and supports the weight of the unit.The locking mechanism 5, with its components such as the mounting plates 51, the grooves 52, and the limiting frames 53, provides mechanical support and a secure stop for the nozzle 2, thus preventing it from loosening due to vibrations or the counterforce of the airflow and ensuring a reliable connection between the nozzle 2 and the external line. The grooves 52 allow for quick engagement and positioning of the limiting frames 53. After the limiting frames 53 are engaged in the grooves 52, they are securely fastened to the frame 4 with screws, thus providing support and a stop for the nozzle 2 and preventing its displacement or loosening. The mounting holes 6 are used for screw fastening, ensuring stable mounting of the entire device on the floor or a platform.The connection holes 7 are used for connection to the external air supply line, thus ensuring a stable airflow inlet.

[0019] The connection between nozzle 2 and the external air supply line is made via flange 3 and connection holes 7. Nozzle 2 is threaded to the blast mill 1. Once connected, nozzle 2 is in close contact with the blast mill 1. At this point, the limiting frames 53 are engaged in the grooves 52 and securely fastened to the frame 4 with screws. The limiting frames 53 support the mounted nozzle 2 and restrict its position, thus preventing displacement or loosening and ensuring a secure connection between nozzle 2 and the external air supply line. Example 2

[0020] With reference to Fig. 2 and Fig. Section 3 describes the second embodiment of the present utility model, which is based on the previous embodiment.

[0021] In detail, it is as follows: The guide component 54 comprises a movable ring 541, which is rotatably connected to the outer circumferential surface of the nozzle 2; locking pins 542, which are each fixedly connected to the front and rear sides of the top of the movable ring 541; a locking ring 543, which is arranged above the movable ring 541; and locking holes 544, which are formed at the front and rear of the top of the locking ring 543. The dimensions of the locking holes 544 are adapted to the locking pins 542, and the locking pins 542 are inserted into the locking holes 544. The upper ends of the locking pins 542 are located above the top of the locking ring 543.

[0022] The jet mill 1 serves as the main body of the device and performs the function of ultra-fine grinding and classifying powders. Since its structure and functions are based on established and mature technologies, they will not be discussed further here. The nozzle 2 is responsible for introducing the high-pressure airflow and providing the grinding force. Its mounting stability directly influences the airflow transmission efficiency and the operational reliability of the device. The nozzle 2 is in close contact with the jet mill 1. The flange 3 is connected to the external air supply line via the circularly arranged connection holes 7, thus providing a stable air supply connection point and reinforcing the tightness of the connection. The frame 4 serves to mount the entire device stably on the floor or a base and supports the weight of the device.The locking device 5, with its components such as the mounting plates 51, the grooves 52, and the limiting frames 53, provides mechanical support and a secure stop for the nozzle 2, thus preventing it from loosening due to vibrations or the counterforce of the airflow and ensuring a secure connection between the nozzle 2 and the external line. The grooves 52 allow for quick engagement and positioning of the limiting frames 53. After the limiting frames 53 are engaged in the grooves 52, they are firmly connected to the frame 4 via screws, thus providing support and a stop for the nozzle 2 and preventing its displacement or loosening.

[0023] For the threaded connection of the nozzle 2, the connecting pins 542 on both sides are pre-aligned with the connecting holes 544 and inserted. At this point, the upper end of the nozzle 2 is in a vertical position relative to the internal thread of the jet mill 1, allowing the nozzle 2 to be rotated and connected. This enables quick positioning during the threaded connection of the nozzle 2 and simultaneously ensures that the nozzle 2 remains in a vertical position throughout the process. This guarantees the correct alignment of the thread, ensures the correctness of the connection, improves the mounting stability of the nozzle 2, and further increases the connection reliability between the nozzle 2 and the external line. Example 3

[0024] With reference to Fig. 1, Fig. 2, and Fig.Section 5 describes the third embodiment of the present utility model, which is based on the two previous embodiments.

[0025] In detail, this is as follows: A connecting ring 8 is firmly attached to the outer circumferential surface of the nozzle 2, and the top of the connecting ring 8 is flush with the lower end of the jet mill 1.

[0026] The connecting ring 8 is firmly connected to the plug pins 542. After the nozzle 2 has been assembled, the connecting ring 8 is in close contact with the locking ring 543. At this point, the connecting ring 8 and the locking ring 543 are firmly connected by screws, further increasing the connection strength between the nozzle 2 and the jet mill 1 and further increasing the connection reliability between the nozzle 2 and the external air supply line.

[0027] It should be noted that the above embodiments serve only to illustrate, and not to limit, the technical solution of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, it should be obvious to those skilled in the art that the technical solution of the present utility model can be modified or replaced by equivalent alternatives without departing from the spirit and scope of the technical solution of the present utility model. All such modifications and alternatives shall fall within the scope of protection of the claims of the present utility model.

Claims

[1] A fully automatic vertical jet mill with a tamper-proof connection structure, comprising a jet mill (1), a nozzle (2) connected via a thread to the inner surface of the lower end of the jet mill (1), a flange (3) firmly connected to the outer circumferential surface of the air inlet end of the nozzle (2), and a frame (4) arranged below the nozzle (2); characterized by , that a release device (5) is arranged below the jet mill (1), wherein the release device (5) comprises two mounting plates (51) which are each firmly connected to both sides of the jet mill (1), grooves (52) which are formed in the undersides of the mounting plates (51), limiting frames (53) which are latched into the grooves (52), and a guide component (54) which is arranged above the limiting frames (53). [2] The fully automatic vertical jet mill with a tamper-proof connection structure according to claim 1, characterized by , that the guide component (54) comprises a movable ring (541) rotatably connected to the outer circumferential surface of the nozzle (2), locking pins (542) fixedly connected to the front and rear sides of the top of the movable ring (541), a locking ring (543) arranged above the movable ring (541), and locking holes (544) formed at the front and rear of the top of the locking ring (543). [3] The fully automatic vertical jet mill with a tamper-proof connection structure according to claim 1, characterized by , that the frame (4) is firmly connected to the outer circumferential surface of the jet mill (1) and that fastening openings (6) are formed at the four corners of the underside of the frame (4). [4] The fully automatic vertical jet mill with a tamper-proof connection structure according to claim 1, characterized by, that the dimensions of the grooves (52) are adapted to the limiting frames (53) and the limiting frames (53) are in close contact with the mounting plates (51). [5] The fully automatic vertical jet mill with a tamper-proof connection structure according to claim 2, characterized by , that the dimensions of the plug holes (544) are adapted to the plug pins (542) and the plug pins (542) are inserted into the plug holes (544). [6] The fully automatic vertical jet mill with a tamper-proof connection structure according to claim 2, characterized by , that the upper ends of the plug pins (542) are located above the top of the locking ring (543). [7] The fully automatic vertical jet mill with a tamper-proof connection structure according to claim 1, characterized by, that the undersides of the boundary frames (53) are firmly connected to the frame (4) by means of screws and that several connection holes (7) are formed in a circular arrangement on the front side of the flange (3). [8] The fully automatic vertical jet mill with a tamper-proof connection structure according to claim 1, characterized by , that a connecting ring (8) is firmly attached to the outer circumferential surface of the nozzle (2) and the top of the connecting ring (8) is flush with the lower end of the jet mill (1).

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