A hammer mill-screen quick-release crusher

Abstract

This utility model relates to the field of pulverizer technology and discloses a hammer mill-screen quick-release pulverizer, including a pulverizing shell. Four symmetrically distributed dovetail grooves are provided on the left side of the pulverizing shell. Each dovetail groove has a mounting frame slidably connected inside. Each mounting frame has two symmetrical buffer grooves on its inner sidewall. Each buffer groove has a buffer plate slidably connected inside. A fixing plate is fixedly connected to the side of each pair of buffer plates that are close to each other. This device, through the sliding connection structure between the dovetail grooves and the mounting frames, allows for convenient removal of the mounting frame and screen as a whole from the pulverizing shell. Multiple mounting frames can be operated simultaneously. With the help of buffer springs and dampers, the screen can automatically adjust its position and provide a buffering effect during installation, allowing the screen to fit more tightly against the inner wall of the pulverizing shell. This achieves the purpose of quick screen replacement, avoiding the problems of traditional screens being fixed with bolts, which are inconvenient for disassembly and cleaning.

Description

Technical Field

[0001] This utility model relates to the field of crusher technology, and more specifically, to a hammer mill-screen quick-release crusher. Background Technology

[0002] A pulverizer is a device that uses external force to reduce the size of material particles. It is widely used in many industries such as chemical, food, pharmaceutical, and feed industries. It can process materials in block or strip form into powder to meet the needs of different production processes. Among them, the hammer mill-screen pulverizer occupies a certain application proportion among many types of pulverizers due to its relatively simple structure and high pulverization efficiency. The hammer mill-screen quick-release pulverizer is a type of equipment designed on the basis of conventional structure to facilitate the disassembly and maintenance of components such as screens.

[0003] However, in existing hammer mill-screen quick-release crushers, the quick-release connection structure between the screen and the machine body often uses simple snap-fit ​​or bolt connections. Under the influence of frequent disassembly and assembly over a long period of time and vibration generated during crushing operations, the snap-fit ​​is prone to wear and deformation, and the bolts are prone to loosening. This leads to a decrease in the fit between the screen and the machine body after installation, and material is prone to leaking out from the gap between the screen and the machine body during the crushing process. This not only causes waste of raw materials but also affects the purity of the collected material after crushing. At the same time, the instability of this connection structure will also aggravate the vibration and noise during equipment operation, reducing the overall service life and operational stability of the equipment. Utility Model Content

[0004] (a) Technical problems to be solved In view of the above situation and to overcome the defects of the prior art, this utility model provides a hammer-screen quick-release crusher, which aims to solve the problems in the background art.

[0005] (II) Technical Solution To achieve the above objectives, this application provides the following technical solution: a hammer mill-screen quick-release pulverizer, comprising a pulverizing shell, four symmetrically distributed dovetail grooves on the left side of the pulverizing shell, a mounting frame slidably connected inside each dovetail groove, two symmetrical buffer grooves on the inner side wall of each mounting frame, a buffer plate slidably connected inside each buffer groove, a fixing plate fixedly connected to the side of each pair of buffer plates that are close to each other, multiple buffer springs and multiple dampers fixedly connected to the side of each mounting frame and fixing plate that are close to each other, each damper being located inside the buffer spring, each fixing plate protruding from the mounting frame, a screen fixedly connected to the side of the two sets of fixing plates that are symmetrically connected, the outer surface of the screen contacting the inner wall of the pulverizing shell, two symmetrical closing plates fixedly connected to the inner wall of the pulverizing shell, the bottom surface of each closing plate contacting the upper surface of the screen.

[0006] The present invention is further configured such that a first ball bearing is fixedly connected to the inner wall of the crushing shell, a stepper motor is fixedly connected to the right side of the crushing shell by bolts, and a crushing shaft is fixedly connected to the inner ring of the first ball bearing and the output end of the stepper motor together. The crushing shaft is located in the middle of the screen.

[0007] The present invention is further configured such that a locking groove is provided at the left end of the crushing shaft, a sealing cover is fixedly connected to the left side of the crushing shell by bolts, a second ball bearing is fixedly connected to the inner wall of the center of the sealing cover, a locking block is fixedly connected to the inner ring of the second ball bearing, the outer surface of the locking block is engaged with the inside of the locking groove, and the left end of each mounting bracket is in contact with the right side of the sealing cover.

[0008] The present invention is further configured such that a feeding hopper is fixedly connected to the inner wall of the upper surface of the crushing shell, and a fixing ring is fixedly connected to the outer surface of the feeding hopper and the upper surface of the crushing shell.

[0009] The present invention is further configured such that four support legs are fixedly connected to the bottom surface of the crushing shell, and an auxiliary handle is fixedly connected to the outer surface of each mounting bracket.

[0010] The present invention is further configured such that a controller is fixedly connected to the front side of the crushing shell, and the controller is electrically connected to the stepper motor via a wire.

[0011] (III) Beneficial Effects Compared with the prior art, the beneficial effects of this utility model are: The sliding connection structure between the dovetail groove and the mounting bracket allows for easy removal of the mounting bracket along with the screen from the crushing chamber. Multiple mounting brackets can be operated simultaneously. Combined with buffer springs and dampers, the screen automatically adjusts its position and provides cushioning during installation, ensuring a tighter fit between the screen and the inner wall of the crushing chamber. This facilitates quick screen replacement, avoiding the inconvenience of disassembly and cleaning associated with traditional screens that are often fixed with bolts. The contact between the sealing plate and the screen effectively prevents material from overflowing from the connection between the screen and the inner wall of the crushing chamber, ensuring proper sieving of the crushed material within the screen, reducing material residue, and preventing contamination of subsequent materials by residual material adhering to the screen and deteriorating. Attached Figure Description

[0012] Figure 1 This is a three-dimensional overall structural diagram of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the crushing shell of this utility model; Figure 3 This is a three-dimensional structural diagram of the first ball bearing of this utility model; Figure 4 This is a three-dimensional structural diagram of the second ball bearing of this utility model; Figure 5 This is a three-dimensional structural diagram of the screen of this utility model; Figure 6 This is a three-dimensional structural diagram of the mounting bracket of this utility model; Figure 7 This is a three-dimensional structural diagram of the damper of this utility model; Figure 8 This is a three-dimensional structural diagram of the fixing plate of this utility model.

[0013] In the diagram: 1. Crushing shell; 2. Support leg; 3. Fixing ring; 4. Feed hopper; 5. Controller; 6. Sealing cover; 7. Sealing plate; 8. Auxiliary handle; 9. Crushing shaft; 10. Screen; 11. Stepper motor; 12. First ball bearing; 13. Engaging groove; 14. Dovetail groove; 15. Second ball bearing; 16. Engaging block; 17. Mounting bracket; 18. Fixing plate; 19. Buffer groove; 20. Buffer plate; 21. Buffer spring; 22. Damper. Detailed Implementation

[0014] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0015] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0016] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0017] Please see Figures 1-8The system includes a crushing shell 1. Four symmetrically distributed dovetail grooves 14 are provided on the left side of the crushing shell 1. A mounting frame 17 is slidably connected inside each dovetail groove 14. Two symmetrical buffer grooves 19 are provided on the inner side wall of each mounting frame 17. A buffer plate 20 is slidably connected inside each buffer groove 19. A fixing plate 18 is fixedly connected to the side of each pair of buffer plates 20 that are close to each other. Multiple buffer springs 21 and multiple dampers 22 are fixedly connected to the side of each mounting frame 17 and fixing plate 18 that are close to each other. Each damper 22 is located inside a buffer spring 21. Each fixing plate 18 protrudes from the mounting frame 17. A screen 10 is fixedly connected to the symmetrical side of the two sets of fixing plates 18. The outer surface of the screen 10 contacts the inner wall of the crushing shell 1. Two symmetrical closing plates 7 are fixedly connected to the inner wall of the crushing shell 1. The bottom surface of each closing plate 7 contacts the upper surface of the screen 10.

[0018] Specifically, the screen 10 can be installed or removed by sliding the mounting bracket 17 in the dovetail groove 14. The buffer plate 20 slides in the buffer groove 19 in conjunction with the buffer spring 21 and the damper 22, which can buffer the vibration of the screen 10 and keep it in contact with the inner wall of the crushing shell 1. The sealing plate 7 contacts the screen 10 to prevent material leakage, which solves the problems of easy loosening and material leakage in traditional connections and improves the installation stability and sealing performance.

[0019] Please see Figures 1-8 The inner wall of the crushing shell 1 is fixedly connected to a first ball bearing 12, and the right side of the crushing shell 1 is fixedly connected to a stepper motor 11 by bolts. The inner ring of the first ball bearing 12 and the output end of the stepper motor 11 are fixedly connected to a crushing shaft 9, which is located in the middle of the screen 10.

[0020] Specifically, the stepper motor 11 drives the crushing shaft 9 to rotate, and the first ball bearing 12 supports and reduces the resistance of the crushing shaft 9, so that the crushing shaft 9 rotates stably in the middle of the screen 10 to carry out crushing operations. Combined with the screening function of the screen 10, the crushing efficiency is improved and the problem of unstable operation of the crushing shaft 9 affecting the crushing effect is solved.

[0021] Please see Figures 1-8 The left end of the crushing shaft 9 is provided with a locking groove 13. The left side of the crushing shell 1 is fixedly connected to the sealing cover 6 by bolts. The inner wall of the center of the sealing cover 6 is fixedly connected to the second ball bearing 15. The inner ring of the second ball bearing 15 is fixedly connected to the locking block 16. The outer surface of the locking block 16 is engaged with the inside of the locking groove 13. The left end of each mounting bracket 17 is in contact with the right side of the sealing cover 6.

[0022] Specifically, the sealing cover 6 is fixed to the left side of the crushing shell 1 by bolts. The locking block 16 in the second ball bearing 15 engages with the locking groove 13 of the crushing shaft 9, which helps to support the crushing shaft 9 and enhance its rotational stability. At the same time, the sealing cover 6 abuts against the mounting bracket 17 to prevent it from sliding, thus solving the problems of the left end of the crushing shaft 9 being unsupported and prone to shaking and the mounting bracket 17 being prone to displacement.

[0023] Please see Figures 1-8 The inner wall of the upper surface of the crushing shell 1 is fixedly connected to the feed hopper 4. The outer surface of the feed hopper 4 and the upper surface of the crushing shell 1 are fixedly connected to the fixing ring 3. The bottom surface of the crushing shell 1 is fixedly connected to four support legs 2. The outer surface of each mounting bracket 17 is fixedly connected to an auxiliary handle 8.

[0024] Specifically, the material enters the crushing shell 1 through the feed hopper 4, the fixing ring 3 strengthens the connection between the feed hopper 4 and the crushing shell 1, the support leg 2 stably supports the entire equipment, and the auxiliary handle 8 facilitates the operation of the mounting frame 17 for disassembling and assembling the screen 10, thus solving the problems of easy loosening of the feed hopper 4, unstable equipment placement, and inconvenient disassembly and assembly of the screen 10.

[0025] Please see Figures 1-8 A controller 5 is fixedly connected to the front of the crushing shell 1, and the controller 5 is electrically connected to the stepper motor 11 through a wire.

[0026] Specifically, the controller 5 controls the start, stop and speed of the stepper motor 11 through wires, thereby adjusting the operating state of the crushing shaft 9 to adapt to the crushing requirements of different materials, improving the convenience of equipment operation and the flexibility of crushing operation, and solving the problem that traditional equipment is difficult to accurately control the crushing process.

[0027] Working principle: Material enters the crushing shell 1 through the feed hopper 4. The stepper motor 11 drives the crushing shaft 9 to rotate. The first ball bearing 12 and the second ball bearing 15 support the crushing shaft 9 from both sides and reduce rotational resistance. The locking block 16 in the second ball bearing 15 engages with the locking groove 13 of the crushing shaft 9, further enhancing the rotational stability of the crushing shaft 9 and enabling the crushing shaft 9 to stably crush in the middle of the screen 10. During the crushing process, the buffer plate 20 slides in the buffer groove 19 in conjunction with the buffer spring 21 and the damper 22 to buffer the vibration of the screen 10 and keep it in close contact with the inner wall of the crushing shell 1. The sealing plate 7 contacts the screen 10 to prevent material leakage from the gaps. The sealing cover 6 is fixed to the left side of the crushing shell 1 by bolts and abuts against the mounting bracket 17 to prevent the mounting bracket 17 from sliding and shifting in the dovetail groove 14. The controller 5 controls the start, stop and speed of the stepper motor 11 through wires to adapt to the crushing requirements of different materials. The support leg 2 provides stable support for the entire equipment, ensuring that the entire crushing process is efficient and stable.

[0028] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hammer mill-screen quick-release pulverizer, comprising a pulverizing shell (1), characterized in that: The left side of the crushing shell (1) has four symmetrically distributed dovetail grooves (14). Each dovetail groove (14) is slidably connected to a mounting bracket (17). Each mounting bracket (17) has two symmetrical buffer grooves (19) on its inner sidewall. Each buffer groove (19) is slidably connected to a buffer plate (20). The sides of each pair of buffer plates (20) that are close to each other are fixedly connected to a fixing plate (18). The sides of each mounting bracket (17) and fixing plate (18) that are close to each other are fixedly connected to each other. Multiple buffer springs (21) and multiple dampers (22) are connected. Each damper (22) is located inside the buffer spring (21). Each fixed plate (18) protrudes from the mounting bracket (17). A screen (10) is fixedly connected to one side of the two sets of fixed plates (18) facing each other. The outer surface of the screen (10) is in contact with the inner wall of the crushing shell (1). Two symmetrical closed plates (7) are fixedly connected to the inner wall of the crushing shell (1). The bottom surface of each closed plate (7) is in contact with the upper surface of the screen (10).

2. The hammer mill-screen quick-release pulverizer according to claim 1, characterized in that: The inner wall of the crushing shell (1) is fixedly connected to a first ball bearing (12), and the right side of the crushing shell (1) is fixedly connected to a stepper motor (11) by bolts. The inner ring of the first ball bearing (12) and the output end of the stepper motor (11) are fixedly connected to a crushing shaft (9), which is located in the middle of the screen (10).

3. The hammer mill-screen quick-release pulverizer according to claim 2, characterized in that: The left end of the crushing shaft (9) is provided with a locking groove (13). The left side of the crushing shell (1) is fixedly connected to a sealing cover (6) by bolts. The inner wall of the center of the sealing cover (6) is fixedly connected to a second ball bearing (15). The inner ring of the second ball bearing (15) is fixedly connected to a locking block (16). The outer surface of the locking block (16) is engaged with the inside of the locking groove (13). The left end of each mounting bracket (17) is in contact with the right side of the sealing cover (6).

4. The hammer mill-screen quick-release pulverizer according to claim 1, characterized in that: The upper surface of the crushing shell (1) is fixedly connected to the inner wall of the feed hopper (4), and the outer surface of the feed hopper (4) and the upper surface of the crushing shell (1) are fixedly connected to a fixing ring (3).

5. A hammer mill-screen quick-release pulverizer according to claim 1, characterized in that: The bottom surface of the crushing shell (1) is fixedly connected to four support legs (2), and the outer surface of each mounting bracket (17) is fixedly connected to an auxiliary handle (8).

6. A hammer mill-screen quick-release pulverizer according to claim 2, characterized in that: A controller (5) is fixedly connected to the front of the crushing shell (1), and the controller (5) is electrically connected to the stepper motor (11) through a wire.

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