Screen-free crusher

Abstract

The utility model discloses a sieve-free crusher in the field of crushers, which comprises a motor, the motor drives a crushing rotor to rotate, the crushing rotor is arranged in a shell with a snail-shaped section, and the shell comprises an upper shell, a lower shell and a feed port. The feeding port comprises a first feeding part which is reduced from top to bottom and a second feeding part which is expanded from top to bottom, the first feeding part is connected with the second feeding part through a fastener, the bottom of the second feeding part is connected with the upper shell, the upper shell is connected with the lower shell through a fastener, and the lower shell is connected with the lower shell through a fastener. A discharging port is formed in the lowest position of the lower shell, impact plates are arranged on the inner wall of the upper shell and the inner wall of the lower shell, and a smashing cavity is formed between the impact plates and the smashing rotor. The crusher can crush materials with high water content, has the advantages of stable operation and low noise, and has wide application value.

Description

Technical Field

[0001] The utility model belongs to the technical field of pulverizers, and particularly relates to a sieveless pulverizer. Background Art

[0002] At present, the horizontal hammer mills used in the biomass energy, feed, and Chinese herbal medicine industries include two types: with screen and without screen. Among them, the screen mill uses the screen to filter the product to obtain the product of the specified particle size, but it cannot handle filamentary raw materials, raw materials with good toughness, and raw materials with high humidity well, because the above raw materials will clog the sieve holes. If you want to get products of different particle sizes, you need to stop the machine and change the screen. Waiting for a long time to stop and change the screen reduces production efficiency.

[0003] Therefore, when crushing high-humidity materials, a screenless crusher is usually used. During actual use, the screenless crusher in the prior art can crush the materials without stopping the machine to change the screen. However, after long-term use, the hammers inside the screenless crusher will wear out, affecting the crushing effect, so the equipment needs to be disassembled and repaired. The disadvantage is that the outer shell of most screenless crushers is a fixed structure or the hammers cannot be completely shown after a part of the outer shell is disassembled, which makes it inconvenient to replace the hammers inside, causing inconvenience to the staff. Utility Model Content

[0004] The utility model aims to provide a sieveless pulverizer, wherein the hammer pieces can be completely exposed after the upper shell body is disassembled, so that the staff can conveniently inspect and replace the hammer pieces.

[0005] The purpose of the utility model is achieved as follows: a screenless crusher, comprising a motor, the motor drives a crushing rotor to rotate, the crushing rotor is arranged in a shell with a snail-shaped cross-section, the shell comprises an upper shell, a lower shell and a feed port, the feed port comprises a first feed part that is reduced from top to bottom and a second feed part that is expanded from top to bottom, the first feed part is connected to the second feed part by a fastener, the bottom of the second feed part is connected to the upper shell, the upper shell is connected to the lower shell by a fastener, the lowest point of the lower shell is provided with a discharge port, the inner walls of the upper shell and the lower shell are provided with impact plates, and a crushing chamber is formed between the impact plate and the crushing rotor.

[0006] When the utility model is used, the motor is started to drive the crushing rotor to rotate counterclockwise, and the material enters the crushing chamber through the feed port. The crushing rotor rotates at high speed to crush the material into smaller particles. The crushed material moves continuously in the crushing chamber until it hits the impact plate and rebounds. It is hit again under the action of the rotating hammer head. After reaching the required degree of crushing, it is discharged through the discharge port. Compared with the prior art, the beneficial effects of the utility model are: the shell cross-section is designed to be snail-shaped, so that the airflow can rotate and accelerate in the inlet and outlet areas, and the pressure in the crushing chamber is strengthened, thereby ensuring that the material can be automatically fed in and out, and further improving the crushing efficiency of the crushing rotor; the staff only needs to remove the fasteners to separate the upper shell and the lower shell, and the axially rotating crushing rotor can be observed and repaired in all directions; the feed port adopts a split structure of the first feed part and the second feed part, which is also convenient for subsequent cleaning and maintenance of the equipment.

[0007] As a further improvement of the utility model, the crushing rotor includes a main shaft and several axially arranged hammer frame plates, a first spacer sleeve is provided between two adjacent hammer frame plates on the main shaft, several hammer frame plates are connected to each other through multiple hammer pins, at least one hammer piece is provided between two adjacent hammer frame plates on the hammer pin, and a second spacer sleeve is provided between two adjacent hammer pieces.

[0008] As a further improvement of the present invention, the plurality of hammer pins are evenly distributed in the circumferential direction around the main shaft.

[0009] As a further improvement of the utility model, the hammer piece is a rectangular blade-shaped structure.

[0010] As a further improvement of the utility model, the hammer piece includes a hammer handle and a hammer head, the hammer handle is connected to the hammer pin, and the cross-section of the hammer head is a right-angled trapezoidal structure.

[0011] As a further improvement of the utility model, the main shaft is supported on the base through a bearing seat, a rolling bearing is arranged between the main shaft and the bearing seat, and the motor is coaxially connected to the main shaft through a coupling.

[0012] As a further improvement of the present invention, the main shaft includes a first shaft body, a second shaft body and a third shaft body arranged in sequence from left to right, the diameters of the first shaft body and the third shaft body are both smaller than the diameter of the second shaft body, and a key groove is provided on the third shaft body, and a connecting key is provided in the key groove.

[0013] As a further improvement of the utility model, the rolling bearing is positioned on the main shaft by means of a tightening sleeve and a locating ring, a double-lip sealing ring is also arranged between the bearing seats, and an end cover is arranged at the end of the bearing seat corresponding to the main shaft.

[0014] As a further improvement of the utility model, the motor, the housing and the bearing seat are all arranged on the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the front view of the first embodiment of the utility model.

[0016] Figure 2 for Figure 1 Cross-sectional view at AA in the middle.

[0017] Figure 3 It is a top view of the first embodiment of the utility model.

[0018] Figure 4 This is an axial cross-sectional view of the crushing rotor in Example 1 of the utility model.

[0019] Figure 5 This is an axial cross-sectional view of the grinding rotor of the second embodiment of the utility model.

[0020] Figure 6 This is a radial cross-sectional view of the grinding rotor of the second embodiment of the utility model.

[0021] Among them, 1 is a motor, 2 is a crushing rotor, 201 is a main shaft, 201a is a first shaft, 201b is a second shaft, 201c is a third shaft, 201d is a keyway, 202 is a hammer frame plate, 203 is a first spacer, 204 is a hammer pin, 205 is a hammer piece, 205a is a hammer handle, 205b is a hammer head, 206 is a second spacer, 3 is a bearing seat, 4 is a base, 5 is a coupling, 6 is a fastener, 7 is a positioning ring, 8 is a double-lip sealing ring, 9 is an end cover, 10 is a shell, 1001 is an upper shell, 1002 is a lower shell, 1003 is a feed port, 1003a is a first feed part, 1003b is a second feed part, 1004 is a discharge port, 11 is a fastener, and 12 is an impact plate. DETAILED DESCRIPTION Embodiment 1

[0022] like Figure 1-4As shown, a screenless pulverizer includes a motor 1, which drives a pulverizing rotor 2 to rotate. Specifically, the pulverizing rotor 2 includes a main shaft 201 and a plurality of axially arranged hammer rack plates 202. A first spacer 203 is sleeved between two adjacent hammer rack plates 202 on the main shaft 201. The plurality of hammer rack plates 202 are connected to each other through four hammer pins 204. The four hammer pins 204 are evenly distributed in the circumferential direction of the main shaft 201. Two hammer pieces 205 are arranged between the hammer pins 204 and the adjacent two hammer rack plates 202. Preferably, the hammer pieces 205 are rectangular blade-shaped structures. A second spacer 206 is arranged between the hammer pieces 205; the main shaft 201 includes a first shaft body 201a, a second shaft body 201b and a third shaft body 201c which are arranged from left to right in sequence, the diameters of the first shaft body 201a and the third shaft body 201c are smaller than the diameter of the second shaft body 201b, the first shaft body 201a and the third shaft body 201c are supported on the base 4 through the bearing seat 3 respectively, a rolling bearing is arranged between the main shaft 201 and the bearing seat 3, the motor 1 is coaxially connected with the third shaft body 201c through the coupling 5, and a keyway 201d is provided on the third shaft body 201c, and the keyway 2 A connecting key is provided in 01d for radial positioning; the rolling bearing is axially positioned on the main shaft 201 through a tightening sleeve 6 and a positioning ring 7; a double-lip sealing ring 8 is also provided between the bearing seat 3 and the bearing seat 3, which can help reduce friction and wear on the shaft; an end cover 9 is provided at the end of the bearing seat 3 corresponding to the main shaft 201 to prevent pollutants such as dirt, dust and water from entering; the grinding rotor 2 is arranged in a shell 10 with a snail-shaped cross section, and the shell 10 includes an upper shell 1001, a lower shell 1002 and a feed port 1003, and the feed port 1003 includes a first feed port that is reduced from top to bottom. The first feed part 1003a and the second feed part 1003b which expands from top to bottom, the first feed part 1003a is connected to the second feed part 1003b by a fastener 11, the bottom of the second feed part 1003b is connected to the upper shell 1001, the upper shell 1001 is connected to the lower shell 1002 by the fastener 11, the lower shell 1002 is provided with a discharge port 1004 at the lowest point, the inner walls of the upper shell 1001 and the lower shell 1002 are both provided with impact plates 12, and a crushing chamber is formed between the impact plate 12 and the crushing rotor 2; the motor 1, the housing 10 and the bearing seat 3 are all arranged on the base 4. Embodiment 2

[0023] like Figure 5 and 6 As shown, the difference between this embodiment and the first embodiment is that: a hammer piece 205 is arranged between two adjacent hammer frame plates 202 on the hammer pin 204. Specifically, the hammer piece 205 includes a hammer handle 205a and a hammer head 205b. The hammer handle 205a is connected to the hammer pin 204, and the cross-section of the hammer head 205b is a right-angled trapezoidal structure.

[0024] The advantages of the utility model are that the crushing effect can be controlled by changing the speed of the motor 1, the type or number or the arrangement spacing position of the hammer pieces 205; the screenless crusher can crush materials with a high water content, has the advantages of stable operation and low noise, and has wide application value.

[0025] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A screenless pulverizer, comprising a motor, wherein the motor drives a pulverizing rotor to rotate, characterized in that: The crushing rotor is arranged in an outer shell with a snail-shaped cross-section, the outer shell includes an upper shell, a lower shell and a feed port, the feed port includes a first feed part that is reduced from top to bottom and a second feed part that is expanded from top to bottom, the first feed part is connected to the second feed part through a fastener, the bottom of the second feed part is connected to the upper shell, the upper shell is connected to the lower shell through a fastener, the lowest point of the lower shell is provided with a discharge port, the inner walls of the upper shell and the lower shell are both provided with impact plates, and a crushing chamber is formed between the impact plate and the crushing rotor.

2. A screenless pulverizer according to claim 1, characterized in that: The crushing rotor includes a main shaft and a plurality of axially arranged hammer frame plates, a first spacer is sleeved between two adjacent hammer frame plates on the main shaft, the plurality of hammer frame plates are connected to each other through a plurality of hammer pins, at least one hammer piece is arranged between two adjacent hammer frame plates on the hammer pin, and a second spacer is arranged between two adjacent hammer pieces.

3. A screenless pulverizer according to claim 2, characterized in that: The plurality of hammer pins are evenly distributed around the circumference of the main shaft.

4. A screenless pulverizer according to claim 2, characterized in that: The hammer piece is a rectangular blade-shaped structure.

5. A screenless pulverizer according to claim 2, characterized in that: The hammer piece comprises a hammer handle and a hammer head, the hammer handle is connected to a hammer pin, and the cross section of the hammer head is a right-angle trapezoidal structure.

6. A screenless pulverizer according to claim 2, characterized in that: The main shaft is supported on the base through a bearing seat, a rolling bearing is arranged between the main shaft and the bearing seat, and the motor is coaxially connected to the main shaft through a coupling.

7. A screenless pulverizer according to claim 6, characterized in that: The main shaft includes a first shaft body, a second shaft body and a third shaft body which are arranged in sequence from left to right. The diameters of the first shaft body and the third shaft body are both smaller than the diameter of the second shaft body. A keyway is provided on the third shaft body, and a connecting key is provided in the keyway.

8. A screenless pulverizer according to claim 6, characterized in that: The rolling bearing is positioned on the main shaft by means of a tightening sleeve and a positioning ring. A double-lip sealing ring is also arranged between the bearing seats. An end cover is arranged at the end of the bearing seat corresponding to the main shaft.

9. A screenless pulverizer according to claim 6, characterized in that: The motor, the housing and the bearing seat are all arranged on the base.

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