Hammer mill with cutting and grinding functions

Abstract

The invention discloses a hammer mill with cutting and grinding functions, which comprises a shell and a motor, a rotating shaft is rotatably mounted in the shell, the rotating shaft is in transmission connection with the motor, a plurality of first hammers are fixedly mounted on the rotating shaft, a movable sleeve is sleeved on the rotating shaft, a second hammer is fixedly mounted on the movable sleeve, and a plurality of second hammers are fixedly mounted on the second hammer. The movable sleeve is in clearance fit with the rotating shaft and located on the rotating shaft between the adjacent first hammer pieces, and the tops of the first hammer pieces and the tops of the second hammer pieces are each in a blade shape. The top of the first hammer and the top of the second hammer can be used for striking and cutting materials, and the problem that elastic objects cannot be crushed only by striking the elastic objects through the hammers is solved.

Description

Technical Field

[0001] This invention relates to pulverizers, specifically a hammer mill pulverizer with cutting and grinding functions. Background Technology

[0002] In the field of crushing technology, hammer mills are the most common. However, when crushing highly elastic spherical materials, the impact force of the hammer mill hammers is absorbed by the elastic material. Once the material separates from the hammers, it will return to its original shape. This phenomenon will make it impossible to crush the material.

[0003] The main approach to solving this problem is to use grinding-type pulverizers, such as cone mills. However, highly elastic materials can clog the holes in cone mills, preventing them from working for extended periods and affecting production capacity. Summary of the Invention

[0004] The technical problem this invention aims to solve is that it is inconvenient to use existing pulverizers to pulverize highly elastic materials. This invention provides a hammer mill with cutting and grinding functions, suitable for pulverizing highly elastic materials. To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A hammer mill with cutting and grinding functions includes a housing and a motor. A rotating shaft is rotatably installed inside the housing and is drivenly connected to the motor. A plurality of first hammer blades are fixedly installed on the rotating shaft. The structure is characterized in that: a movable sleeve is fitted on the rotating shaft, and a second hammer blade is fixedly installed on the movable sleeve. The movable sleeve is clearance-fitted with the rotating shaft and is located on the rotating shaft between adjacent first hammer blades. The tops of the first hammer blades and the second hammer blades are respectively blade-shaped.

[0005] The present invention relates to a hammer mill, which is internally equipped with a first hammer that can rotate with the shaft and a second hammer that rotates with the shaft but not synchronously with the first hammer. The tops of all the first and second hammers are blade-shaped, which can be used to strike and cut the material, thus solving the problem that it is impossible to break elastic objects by simply striking them with hammers.

[0006] Preferably, the first hammer blade and the second hammer blade mesh with each other. Since the first hammer blade is fixedly installed on the rotating shaft and rotates with the rotating shaft, while the second hammer blade is only sleeved on the rotating shaft but not tightly fixed to the rotating shaft, the second hammer blade will still rotate with the rotating shaft but not synchronously with the first hammer blade, so that the first and second hammer blades generate relative motion, which can play a grinding role on the material.

[0007] Preferably, the first hammer blade and the second hammer blade are both serrated.

[0008] Preferably, limiting blocks are provided on the rotating shafts on both sides of the movable sleeve to limit the range of motion of the second hammer along the axial direction of the rotating shaft.

[0009] Preferably, the first hammer blade is welded to the rotating shaft, and the second hammer blade is welded to the movable sleeve.

[0010] Preferably, the top of the shell is provided with a material inlet and the bottom is provided with a material outlet. A screen is provided above the material outlet. Large particles that fail to pass through the screen will be cut and ground again, and finally fall through the screen and be discharged from the material outlet.

[0011] Features of this invention: 1. The first and second hammer blades are generally serrated, with the tops shaped like blades; 2. The first hammer blade is welded to the rotating shaft and rotates with the shaft. The second hammer blade is sleeved on the rotating shaft but is not fixed. It can rotate with the rotating shaft but will not strictly follow the rotation. The second hammer blade can also move within a certain range along the axial direction of the rotating shaft.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1) This invention redesigns the hammer blades, dividing them into a first hammer blade that can rotate with the shaft and a second hammer blade that rotates with the shaft but not synchronously with the first hammer blade. The first and second hammer blades are serrated as a whole, with a blade-shaped top, which has a cutting and grinding effect on the material, thus broadening the application range of the hammer mill. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention.

[0015] In the diagram: 1-Limit stop, 2-Modible sleeve, 3-Second hammer, 4-First hammer, 5-Material inlet, 6-Motor, 7-Screen, 8-Material outlet, 9-Outer shell, 10-Rotating shaft. Detailed Implementation

[0016] The present invention will be further described below with reference to specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0017] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0019] Please see Figure 1 An embodiment of the hammer mill with cutting and grinding functions of the present invention includes a housing 9 and a motor 6. A rotating shaft 10 is rotatably installed inside the housing 9, and the rotating shaft 10 is drivenly connected to the motor 6. A plurality of first hammers 4 are welded and installed on the rotating shaft 10. A movable sleeve 2 is fitted on the rotating shaft 10, and a second hammer 3 is welded and installed on the movable sleeve 2. The movable sleeve 2 is clearance-fitted with the rotating shaft 10 and is located on the rotating shaft 10 between adjacent first hammers 4. A material inlet 5 is provided at the top of the housing 9, and a material outlet 8 is provided at the bottom. A screen 7 is provided above the material outlet 8.

[0020] The tops of the first hammer blade 4 and the second hammer blade 3 are respectively blade-shaped. After the material enters from the material inlet 5, it first contacts the tops of the first hammer blade 4 and the second hammer blade 3 and is cut and struck, thus achieving preliminary crushing.

[0021] The first hammer blade 4 and the second hammer blade 3 mesh with each other. Since the first hammer blade 4 is fixedly mounted on the rotating shaft 10 and rotates with the rotating shaft 10, while the second hammer blade 3 is only sleeved on the rotating shaft 10 but is not tightly fixed to the rotating shaft 10, the second hammer blade 3 will still rotate with the rotating shaft 10 but not synchronously with the first hammer blade 4, so that the first and second hammer blades generate relative motion, which can play a grinding role on the material.

[0022] Preferably, the first hammer blade 4 and the second hammer blade 3 are both serrated.

[0023] Limiting blocks 1 are respectively provided on the rotating shafts 10 on both sides of the movable sleeve 2 to limit the range of movement of the second hammer 3 along the axial direction of the rotating shaft 10.

[0024] In operation, the first hammer 4 rotates at high speed driven by the motor 6, while the second hammer 3 passively rotates or remains stationary, creating relative motion between them. Because the movable sleeve 2 is blocked by the limiting block 1 on the rotating shaft 10, the axial movement range of the second hammer 3 is restricted, maintaining a certain distance between the first and second hammers to prevent collision. Material enters the crusher housing 9 from the material inlet 5, first contacting the blade-shaped tops of the first and second hammers, causing them to be cut and struck, resulting in initial crushing. As the material falls, it enters the space between the first and second hammers for further grinding. Large particles that fail to pass through the screen 7 are cut and ground again, eventually falling through the screen 7 and being discharged from the material outlet 8.

[0025] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A hammer mill with cutting and grinding functions, comprising a housing (9) and a motor (6), wherein a rotating shaft (10) is rotatably installed inside the housing, the rotating shaft is connected to the motor for transmission, and a plurality of first hammers (4) are fixedly installed on the rotating shaft, characterized in that: A movable sleeve (2) is fitted on the rotating shaft, and a second hammer blade (3) is fixedly installed on the movable sleeve. The movable sleeve is in clearance fit with the rotating shaft and is located on the rotating shaft between adjacent first hammer blades. The tops of the first hammer blade and the second hammer blade are respectively blade-shaped.

2. The hammer mill with cutting and grinding functions according to claim 1, characterized in that, The first hammer blade and the second hammer blade mesh with each other.

3. The hammer mill with cutting and grinding functions according to claim 1, characterized in that, The first hammer blade and the second hammer blade are both serrated.

4. The hammer mill with cutting and grinding functions according to claim 1, characterized in that, Limiting blocks (1) are respectively provided on the rotating shafts on both sides of the movable sleeve.

5. The hammer mill with cutting and grinding functions according to claim 1, characterized in that, The first hammer blade is welded to the rotating shaft, and the second hammer blade is welded to the movable sleeve.

6. The hammer mill with cutting and grinding functions according to any one of claims 1-5, characterized in that, The top of the shell is provided with a material inlet (5), the bottom is provided with a material outlet (8), and a screen (7) is provided above the material outlet.

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