Hammer type flour mill

Abstract

The utility model relates to the technical field of flour mills, and discloses a hammer type flour mill which comprises a machine body, a flour milling chamber and a collecting chamber are arranged in the machine body, a discharging port is arranged between the flour milling chamber and the collecting chamber in a communicating mode, a plurality of milling teeth are arranged on the inner wall of the flour milling chamber in an array mode, a rotating shaft is arranged in the flour milling chamber in a rotating mode, and a motor is fixedly arranged on the outer wall of the machine body and connected with one end of the rotating shaft. Each hammering assembly comprises a plurality of sleeves fixedly arranged on the rotating shaft, hammer rods are slidably inserted into the sleeves, sliding plates are arranged at the ends, located in the sleeves, of the hammer rods, hammer heads are fixedly arranged at the other ends of the hammer rods, a plurality of positioning holes are formed in the sleeves in an up-and-down symmetrical mode, and positioning grooves are formed in the sliding plates. The sliding plate penetrates through the positioning hole through a fixing bolt and is inserted into the positioning groove to be fixedly connected with the sleeve. The hammer rod can be adjusted in the sleeve in a sliding mode, so that the distance between the hammer head and the grinding teeth is changed, the device can adapt to material grinding under different hardness and humidity conditions, and the grinding efficiency is improved.

Description

A hammer mill Technical Field

[0001] This utility model relates to the field of grinding mill technology, specifically to a hammer mill. Background Technology

[0002] Hammer mills are a common type of crushing equipment, mainly used for coarse and fine crushing of various materials. Their working principle involves using high-speed rotating hammers to impact, shear, and grind the material, thereby achieving the purpose of crushing. They are widely used in industries such as chemical, pharmaceutical, food, feed, and building materials.

[0003] In existing hammer mills, the distance between the hammers and the inner wall of the grinding chamber is fixed and cannot be changed. However, different materials may require different particle sizes and crushing forces. Therefore, a fixed distance may result in insufficient impact and friction on the material, thereby affecting the crushing efficiency, prolonging the crushing time, and increasing energy consumption. Summary of the Invention

[0004] (I) Technical problems to be solved

[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned defects of the fixed and non-adjustable distance between the hammer and the inner wall of the grinding chamber, and to provide a hammer mill.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a hammer mill, including a machine body, wherein a grinding chamber and a collection chamber are provided inside the machine body, and a discharge port is provided between the grinding chamber and the collection chamber. Multiple grinding teeth are arranged in an array on the inner wall of the grinding chamber. A rotating shaft is rotatably provided inside the grinding chamber. A motor is fixed on the outer wall of the machine body and connected to one end of the rotating shaft. Multiple sets of hammer impact components are arranged in an equidistant array on the rotating shaft. The hammer impact components include multiple sleeves fixed on the rotating shaft. A hammer rod is slidably inserted into the sleeve. A sliding plate is provided at one end of the hammer rod inside the sleeve. A hammer head is fixed at the other end of the hammer rod. Multiple positioning holes are arranged in a vertically symmetrical array on the sleeve. A positioning groove is provided on the sliding plate. The sliding plate is fixedly connected to the sleeve by passing through the positioning holes and inserting into the positioning groove through a fixing bolt.

[0008] As an improvement: the number of sleeves is four, arranged in a circular array on the surface of the rotating shaft, the size of the sliding plate is larger than the cross-sectional size of the hammer rod, and the opening size on one side of the sleeve matches the size of the hammer rod.

[0009] As an improvement: a protective shell is provided around the outside of the positioning hole on the sleeve, and a protective cover is hinged to the top surface of the protective shell. Multiple springs are connected to the protective cover, and one end of each spring is connected to the inner wall of the protective shell.

[0010] As an improvement: a slot is provided at the discharge port, and one end of the slot extends through one side of the machine body. A screen is inserted into the slot and the screen is fixed to the machine body by bolts.

[0011] As an improvement: a collection box is pulled out of the collection chamber, and a blower is located on one side of the machine body. An air pipe is connected to the blower, and one end of the air pipe is connected to the collection chamber of the machine body. A dustproof net is provided on the side wall of the collection box near the air pipe.

[0012] As an improvement: a through hole is provided on the machine body at the position of the grinding chamber, and a cover plate is connected to the through hole.

[0013] (III) Beneficial Effects

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] 1. The hammer rod can slide flexibly inside the sleeve, and the distance between the hammer head and the inner wall of the grinding chamber can be adjusted according to the characteristics of the material and the crushing requirements. This better adapts to the crushing requirements of different materials, improves the crushing quality and efficiency, and can change the particle size of the crushed material. The position can be fixed by fixing bolts to ensure the stability of the hammer head when crushing materials.

[0016] 2. Adjusting the distance between the hammer and the grinding chamber can reduce friction and collision between the hammer and the inner wall of the grinding chamber, thereby reducing equipment wear and extending the service life of the equipment.

[0017] 3. A blower is also installed on one side of the machine body, which can use the air pressure difference to suck the dust generated during the crushing process into the collection box, preventing the dust from drifting into the air and reducing pollution to the working environment. Attached Figure Description

[0018] Figure 1 is a structural schematic diagram of a hammer mill according to the present invention;

[0019] Figure 2 is a schematic diagram of the exploded structure of Figure 1;

[0020] Figure 3 is a schematic diagram of the body structure in Figure 1;

[0021] Figure 4 is a schematic diagram of the hammer impact assembly structure of a hammer mill according to this utility model;

[0022] Figure 5 is a schematic diagram of a partial frontal cross-sectional structure of Figure 4;

[0023] Figure 6 is a magnified schematic diagram of part A in Figure 5.

[0024] [Explanation of Labels in the Attached Image]

[0025] 1. Machine body; 2. Grinding chamber; 3. Collection chamber; 4. Discharge port; 5. Grinding teeth; 6. Rotating shaft; 7. Motor; 8. Sleeve; 9. Hammer rod; 10. Slide plate; 11. Hammer head; 12. Positioning hole; 13. Positioning groove; 14. Fixing bolt; 15. Protective shell; 16. Protective cover; 17. Slot; 18. Screen; 19. Collection box; 20. Blower; 21. Air pipe; 22. Dustproof net; 23. Through hole; 24. Cover plate. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0027] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0028] To make the content of this utility model easier to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0029] Example 1

[0030] Referring to Figures 1, 3 to 6, a hammer mill includes a body 1 with a feed pipe at the top. The body 1 contains a grinding chamber 2 and a collection chamber 3, connected by a discharge port 4. Multiple grinding teeth 5 are arrayed on the inner wall of the grinding chamber 2, equidistantly spaced. A rotating shaft 6 rotatably operates within the grinding chamber 2. A motor 7 is fixed to the outer wall of the body 1 and connected to one end of the rotating shaft 6. Multiple sets of hammer impact components are arrayed equidistantly on the rotating shaft 6. Each hammer impact component includes four sleeves 8 fixed to the rotating shaft 6 in a circular pattern. An array is set on the surface of the rotating shaft 6. A hammer rod 9 is slidably inserted into the sleeve 8. A sliding plate 10 is provided at one end of the hammer rod 9 inside the sleeve 8, and a hammer head 11 is fixedly provided at the other end of the hammer rod 9. The size of the sliding plate 10 is larger than the cross-sectional size of the hammer rod 9. The size of the opening on one side of the sleeve 8 matches the size of the hammer rod 9. This setting limits the displacement range of the hammer rod 9 to prevent the hammer head 11 from falling out of the sleeve 8. Multiple positioning holes 12 are arranged symmetrically on the sleeve 8. A positioning groove 13 is provided on the sliding plate 10. The sliding plate 10 is fixedly connected to the sleeve 8 by passing through the positioning holes 12 and inserting into the positioning groove 13 through the fixing bolts 14.

[0031] Meanwhile, to facilitate the adjustment of the hammering assembly, as shown in Figure 2, a through hole 23 is provided on the machine body 1 at the position of the grinding chamber 2, and a cover plate 24 is connected to the through hole 23. This design allows the cover plate 24 to be opened to adjust the distance between the hammer head 11 and the grinding teeth 5.

[0032] Material enters the grinding chamber 2 through the feed pipe. The motor 7 drives the rotating shaft 6 to rotate, thereby driving the hammer assembly to rotate. The high-speed rotating hammer head 11 impacts the material by cooperating with the grinding teeth 5, thereby crushing the material into smaller particles. If it is necessary to change the size of the crushed particles, the machine needs to be stopped. The fixing bolt 14 is removed from the positioning groove 13, and the hammer rod 9 is slid along the sleeve 8 to a suitable distance so that the distance between the hammer head 11 and the grinding teeth 5 is appropriate. Then, the fixing bolt 14 is inserted from the positioning hole 12 into the positioning groove 13 to fix the position of the hammer head 11 and ensure the stability during use.

[0033] To improve work efficiency and reduce operating steps, as shown in Figures 2 and 3, a slot 17 is provided at the discharge port 4, with one end of the slot 17 penetrating one side of the machine body 1. A screen 18 is inserted into the slot 17 and is fixed inside the machine body 1 by bolts. The screen 18 allows materials that meet the standards to be screened into the collection chamber 3 without manual screening. Furthermore, materials that do not meet the standards will be struck again by the hammers 11 to bring them to the required particle size. The screen 18 is detachable, allowing for the replacement of different specifications to suit various screening needs.

[0034] Example 2

[0035] During the crushing process, a certain amount of dust is generated, which pollutes the environment. Based on Embodiment 1 and referring to Figure 2, a collection box 19 is pulled out of the collection chamber 3, and a blower 20 is located on one side of the machine body 1. An air pipe 21 is connected to the blower 20, and one end of the air pipe 21 is connected to the collection chamber 3 of the machine body 1. A dustproof net 22 is provided on the side wall of the collection box 19 near the air pipe 21. The dustproof net 22 can block dust and prevent dust from damaging the blower 20. When the blower 20 is working, the air pressure difference in the collection chamber 3 is less than the air pressure difference in the grinding chamber 2, so that dust is sucked into the collection chamber 3, preventing dust from drifting away, thereby reducing pollution to the surrounding environment and harm to the health of workers.

[0036] To prevent material from damaging the fixing bolt 14 during crushing, as shown in Figures 5 and 6, a protective shell 15 is provided around the outside of the positioning hole 12 on the sleeve 8. A protective cover 16 is hinged to the top surface of the protective shell 15. Multiple springs are connected to the protective cover 16, and one end of the spring is connected to the inner wall of the protective shell 15. The protective shell 15 and the protective cover 16 form a barrier to protect the fixing bolt 14 inside, preventing dust and foreign objects from entering the positioning hole 12. Moreover, the springs can apply a force to the protective cover 16 to prevent it from opening during rotation.

[0037] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A hammer mill, comprising a body (1), wherein the body (1) is provided with a grinding chamber (2) and a collecting chamber (3), and a discharge port (4) is provided between the grinding chamber (2) and the collecting chamber (3), characterized in that: The grinding chamber (2) has multiple grinding teeth (5) arranged in an array on its inner wall. A rotating shaft (6) is rotatably arranged inside the grinding chamber (2). A motor (7) is fixedly arranged on the outer wall of the machine body (1) and connected to one end of the rotating shaft (6). Multiple sets of hammering components are arranged equidistantly on the rotating shaft (6). The hammering components include multiple sleeves (8) fixedly arranged on the rotating shaft (6). A hammer rod (9) is slidably inserted into the sleeve (8). A sliding plate (10) is provided at one end of the hammer rod (9) inside the sleeve (8). A hammer head (11) is fixedly arranged at the other end of the hammer rod (9). Multiple positioning holes (12) are arranged symmetrically on the sleeve (8). A positioning groove (13) is provided on the sliding plate (10). The sliding plate (10) is inserted into the positioning groove (13) and fixedly connected to the sleeve (8) by passing through the positioning hole (12) with a fixing bolt (14).

2. The hammer mill according to claim 1, characterized in that: There are four sleeves (8) arranged in a circular array on the surface of the rotating shaft (6). The size of the slide plate (10) is larger than the cross-sectional size of the hammer rod (9). The opening size on one side of the sleeve (8) matches the size of the hammer rod (9).

3. A hammer mill according to claim 2, characterized in that: The sleeve (8) is surrounded by a protective shell (15) outside the positioning hole (12). A protective cover (16) is hinged to the top surface of the protective shell (15). Multiple springs are connected to the protective cover (16), and one end of each spring is connected to the inner wall of the protective shell (15).

4. A hammer mill according to claim 1, characterized in that: A slot (17) is provided at the outlet (4) position, and one end of the slot (17) passes through one side of the machine body (1). A screen (18) is inserted into the slot (17), and the screen (18) is fixed in the machine body (1) by bolts.

5. A hammer mill according to claim 1, characterized in that: A collection box (19) is pulled out inside the collection chamber (3). A blower (20) is located on one side of the body (1). An air pipe (21) is connected to the blower (20). One end of the air pipe (21) is connected to the collection chamber (3) of the body (1). A dustproof net (22) is provided on the side wall of the collection box (19) near the air pipe (21).

6. A hammer mill according to claim 1, characterized in that: The machine body (1) has a through hole (23) located in the grinding chamber (2), and a cover plate (24) is connected to the through hole (23).

Images