Dustless hammer mill
By introducing a hammer crusher and a dust prevention device into the hammer mill, the problem of filter clogging was solved, and a highly efficient crushing process with no dust pollution was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG QUFU TAIFENG MASCH EQUIP CO LTD
- Filing Date
- 2025-04-16
- Publication Date
- 2026-06-09
AI Technical Summary
The filter screen of existing hammer mills is easily clogged by materials, causing the mill to malfunction.
A striking device is used to vibrate the filter screen. The rotating motion of the crushing hammer, combined with the cooperation of a triangular plate and a spring, strikes the filter screen to prevent clogging. At the same time, a dustproof device is installed in the feed pipe to block dust.
It effectively prevents filter clogging, ensures smooth material passage, reduces dust pollution, and improves crushing efficiency.
Smart Images
Figure CN224332259U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crusher technology, and in particular to a dust-free hammer crusher. Background Technology
[0002] A crusher is a type of mechanical equipment used for processing materials, and a hammer crusher is one of the crushers used in processing materials, which uses impact to break materials.
[0003] To improve the crushing effect, existing hammer mills have a filter screen at the bottom of the crushing chamber to separate the crushed material in advance. However, the material easily clogs the filter screen, causing the mill to malfunction. Utility Model Content
[0004] This utility model proposes a dust-free hammer mill to overcome the shortcomings of existing technologies.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a dust-free hammer mill, comprising a base, which is placed on the ground to provide support for the whole, a mill housing mounted on the upper surface of the base, a feed pipe fixedly connected to the upper surface of the mill housing, a discharge pipe fixedly connected to the bottom of the mill housing, a filter screen fixedly connected inside the mill housing, wherein there is a cavity between the filter screen and the mill housing, and the crushing hammer rotates inside the annular filter screen by means of a rotating shaft, wherein the crushing hammer can crush the material inside the filter screen, a drive mechanism fixedly mounted on the upper surface of the base, wherein the drive mechanism can drive the rotating shaft to rotate (the drive component can be a motor mounted on the base, the motor is connected to the hinge and the rotating shaft through a reducer, and the motor is powered by a power supply module to drive the rotating shaft to rotate; since the motor drive module is a conventional existing technology, it will not be described in detail here), a striking device set on the arc surface of the filter screen, wherein the striking device can cause the filter screen to vibrate, and a dustproof device set inside the feed pipe, wherein the dustproof device can block dust.
[0006] The effect achieved by the above components is as follows: when materials need to be crushed, the operator feeds the materials into the interior of the annular filter screen through the feed pipe. Then, the operator opens the drive mechanism, which drives the rotating shaft inside the crusher housing to rotate. The rotating shaft drives the crushing hammer to rotate, and the crushing hammer crushes the materials. At the same time, the crushing hammer drives the striking device to strike the filter screen to prevent the filter screen from clogging. The crushed materials pass through the annular filter screen into the cavity between the crusher housing and the filter screen, and finally are sent out of the crusher housing through the discharge pipe.
[0007] Preferably, the striking device includes a fixed cover, which is fixedly connected to the arc surface of the filter screen. Inside the fixed cover, two mutually symmetrical springs are fixedly connected. One end of each spring is fixedly connected to a triangular plate, the inclined surface of which is tilted in the direction of rotation of the crusher. A striking block is fixedly connected to the side of the triangular plate near the fixed cover by means of a support rod.
[0008] The effect achieved by the above components is as follows: when the crushing hammer rotates and moves to the position of the triangular plate, the crushing hammer moves along with the triangular plate using the inclined surface of the triangular plate, and the spring contracts. At this time, the triangular plate, with the help of the support rod, drives the striking block to strike the fixed cover, thereby causing the fixed cover and the filter screen to vibrate. When the crushing hammer moves away from the triangular plate, under the action of the spring's return force, the triangular plate moves away from the fixed cover with the striking block and returns to its original position. As the crushing hammer continues to rotate, the striking block will continuously strike the fixed cover, and the striking device will continuously strike the filter screen to prevent the filter screen from becoming clogged, thus preventing the crushed material from passing through the filter screen.
[0009] Preferably, the spring has a telescopic rod inside, with its two ends fixedly connected to the fixed cover and the triangular plate, respectively.
[0010] The effect achieved by the above components is that by setting the telescopic rod, the direction of movement of the triangle is restricted, preventing the triangle from shaking and improving the stability of the triangle's movement.
[0011] Preferably, a rubber pad is fixedly connected to the fixed cover at the location corresponding to the striking block, wherein the size of the rubber pad is larger than the size of the striking block.
[0012] The effect achieved by the above components is that the rubber pads protect the fixing cover and prevent the hammering block from damaging it.
[0013] Preferably, the feed tube is provided with a fixing ring inside, the fixing ring is fixedly connected inside the feed tube, and two mutually symmetrical rotating rods are rotatably connected inside the feed tube. One end of the two rotating rods is fixedly connected to the same protective plate, and the arc surface of the rotating rod is fitted with a coil spring, wherein the two ends of the coil spring are fixedly connected to the protective plate and the inner wall of the feed tube, respectively.
[0014] The effect achieved by the above components is as follows: when material is fed through the feed pipe, the material's own gravity squeezes the protective plate, the protective plate rotates with the rotating rod, the coil spring deforms, and after the material passes through the protective plate, the protective plate returns to its original position under the action of the coil spring's restoring force. The protective plate fits with the fixing ring, thus achieving the effect of protecting the feed pipe and preventing dust from drifting out of the crusher's outer shell through the feed pipe. The dustproof device achieves the effect of protecting dust and preventing dust from drifting out of the crusher's outer shell through the feed pipe.
[0015] Preferably, a sealing ring is fixedly connected to the bottom of the fixing ring, wherein the size of the sealing ring is adapted to the size of the fixing ring.
[0016] The effect achieved by the above components is that by setting a sealing ring, the gap between the fixing ring and the protective plate is sealed, preventing dust from drifting out through the gap.
[0017] Preferably, the upper surface of the fixing ring is provided with a slope, wherein the slope is inclined inward towards the inside of the fixing ring.
[0018] The effect achieved by the above components is that by setting up ramps, the materials are guided and prevented from accumulating above the fixed ring.
[0019] In summary, the beneficial effects of this utility model are as follows:
[0020] When the crushing hammer rotates and moves to the position of the triangular plate, the hammer moves along with the inclined surface of the triangular plate, and the spring contracts. At this time, the triangular plate, with the help of the support rod, drives the striking block to strike the fixed cover, thereby causing the fixed cover and the filter screen to vibrate. When the crushing hammer moves away from the triangular plate, under the action of the spring's return force, the triangular plate, along with the striking block, moves away from the fixed cover and returns to its original position. As the crushing hammer continues to rotate, the striking block will continuously strike the fixed cover, and the striking device will continuously strike the filter screen to prevent the filter screen from becoming clogged, thus preventing the crushed material from passing through the filter screen. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0022] Figure 2 This is a cross-sectional view of the outer casing of the crusher of this utility model;
[0023] Figure 3 This is a cross-sectional view of the fixing cover of this utility model;
[0024] Figure 4 This is a three-dimensional structural diagram of the dustproof device of this utility model;
[0025] Figure 5 This utility model Figure 4 A schematic diagram of the three-dimensional structure on the other side.
[0026] Legend: 1. Base; 2. Drive mechanism; 3. Crusher housing; 4. Feed pipe; 5. Discharge pipe; 6. Filter screen; 7. Crushing hammer; 8. Striking device; 81. Fixing cover; 82. Spring; 83. Triangular plate; 84. Striking block; 85. Rubber pad; 86. Telescopic rod; 9. Dustproof device; 91. Fixing ring; 92. Rotating rod; 93. Protective plate; 94. Coil spring; 95. Sealing ring; 96. Ramp. Detailed Implementation
[0027] Reference Figures 1-5 As shown, this embodiment discloses a dust-free hammer mill, characterized by: a base 1, which is placed on the ground to provide support for the whole; a mill housing 3 is mounted on the upper surface of the base 1; a feed pipe 4 is fixedly connected to the upper surface of the mill housing 3; and a discharge pipe 5 is fixedly connected to the bottom of the mill housing 3; a filter screen 6, which is fixedly connected inside the mill housing 3, wherein there is a cavity between the filter screen 6 and the mill housing 3; and a crushing hammer 7, which rotates inside the annular filter screen 6 by means of a rotating shaft, wherein the crushing hammer 7 can crush the material inside the filter screen 6; and a drive. Mechanism 2, drive mechanism 2 is fixedly installed on the upper surface of base 1, wherein drive mechanism 2 can drive the rotating shaft to rotate (drive component 2 can be a motor installed on base 1, the motor is connected to the hinge and rotating shaft through a reducer, and the motor is powered by a power supply module to drive the rotating shaft to rotate. Since the motor drive module is a conventional existing technology, it will not be described in detail here); striking device 8, striking device 8 is set on the arc surface of filter screen 6, wherein striking device 8 can drive filter screen 6 to vibrate; dustproof device 9, dustproof device 9 is set inside feed pipe 4, wherein dustproof device 9 can block dust. When materials need to be crushed, the operator feeds the materials into the annular filter screen 6 through the feed pipe 4. Then, the operator turns on the drive mechanism 2, which rotates the shaft inside the crusher housing 3. The shaft rotates the crushing hammer 7, which crushes the materials. At the same time, the crushing hammer 7 drives the striking device 8 to strike the filter screen 6 to prevent the filter screen 6 from clogging. The crushed materials pass through the annular filter screen 6 into the cavity between the crusher housing 3 and the filter screen 6, and are finally discharged from the crusher housing 3 through the discharge pipe 5.
[0028] Reference Figures 1-5As shown, the striking device 8 includes a fixed cover 81, which is fixedly connected to the arc surface of the filter screen 6. Inside the fixed cover 81, two mutually symmetrical springs 82 are fixedly connected. One end of the spring 82 is fixedly connected to a triangular plate 83. The inclined surface of the triangular plate 83 is inclined in the direction of rotation of the crusher 7. The side of the triangular plate 83 near the fixed cover 81 is fixedly connected to a striking block 84 by means of a support rod. When the crushing hammer 7 rotates to the position of the triangular plate 83, the crushing hammer 7 moves along with the triangular plate 83 using the inclined surface of the triangular plate 83. The spring 82 contracts, and at this time, the triangular plate 83 drives the striking block 84 to strike the fixed cover 81 with the help of the support rod, thereby causing the fixed cover 81 and the filter screen 6 to vibrate. When the crushing hammer 7 moves away from the triangular plate 83, under the action of the spring 82's return force, the triangular plate 83 moves away from the fixed cover 81 with the striking block 84, and the triangular plate 83 returns to its original position. As the crushing hammer 7 continues to rotate, the striking block 84 will continuously strike the fixed cover 81, and the striking device 8 will continuously strike the filter screen 6 to prevent the filter screen 6 from becoming clogged, thus preventing the crushed material from passing through the filter screen 6.
[0029] Reference Figures 1-5 As shown, a telescopic rod 86 is provided inside the spring 82, with its two ends fixedly connected to the fixed cover 81 and the triangular plate 83, respectively. The telescopic rod 86 restricts the movement direction of the triangular plate 83, preventing it from wobbling and improving its stability. A rubber pad 85 is fixedly connected to the fixed cover 81 at the location corresponding to the striking block 84, with the rubber pad 85 being larger than the striking block 84. The rubber pad 85 protects the fixed cover 81, preventing damage from the striking block 84.
[0030] Reference Figures 1-5 As shown, a fixing ring 91 is provided inside the feed pipe 4, which is fixedly connected to the inside of the feed pipe 4. Two symmetrical rotating rods 92 are rotatably connected inside the feed pipe 4. One end of each rotating rod 92 is fixedly connected to the same protective plate 93. A coil spring 94 is fitted onto the arc surface of the rotating rod 92, with both ends of the coil spring 94 fixedly connected to the protective plate 93 and the inner wall of the feed pipe 4, respectively. When material is fed through the feed pipe 4, the material's own weight compresses the protective plate 93, causing the protective plate 93 to rotate along with the rotating rods 92. The coil spring 94 deforms. After the material passes through the protective plate 93, the protective plate 93 returns to its original position under the restoring force of the coil spring 94, and the protective plate 93 fits against the fixing ring 91, thus achieving the effect of protecting the feed pipe 4 and preventing dust from drifting out of the crusher casing 3 through the feed pipe 4. The dustproof device 9 achieves the effect of protecting against dust, preventing dust from drifting out of the crusher casing 3 through the feed pipe 4.
[0031] Reference Figures 1-5As shown, a sealing ring 95 is fixedly connected to the bottom of the fixing ring 91, and the size of the sealing ring 95 is adapted to the size of the fixing ring 91. The sealing ring 95 effectively seals the gap between the fixing ring 91 and the protective plate 93, preventing dust from escaping through the gap. A ramp 96 is formed on the upper surface of the fixing ring 91, sloping inwards. The ramp 96 guides the material, preventing it from accumulating above the fixing ring 91.
[0032] Working principle: When materials need to be crushed, the operator feeds the material into the annular filter screen 6 through the feed pipe 4. Then, the operator opens the drive mechanism 2, which rotates the shaft inside the crusher housing 3. The shaft rotates the crushing hammer 7, which crushes the material. The crushed material passes through the annular filter screen 6 and enters the cavity between the crusher housing 3 and the filter screen 6. Finally, it is discharged from the crusher housing 3 through the discharge pipe 5. When the crushing hammer 7 rotates to the position of the triangular plate 83, the crushing hammer 7 moves with the help of the inclined surface of the triangular plate 83. Spring 82... When the telescopic rod 86 retracts, the triangular plate 83, with the help of the support rod, drives the striking block 84 to strike the fixed cover 81, thereby causing the fixed cover 81 and the filter screen 6 to vibrate. When the crushing hammer 7 moves away from the triangular plate 83, under the action of the spring 82's return force, the triangular plate 83, along with the striking block 84, moves away from the fixed cover 81 and returns to its original position. As the crushing hammer 7 continues to rotate, the striking block 84 will continuously strike the fixed cover 81, and the striking device 8 will continuously strike the filter screen 6 to prevent the filter screen 6 from becoming clogged, thus preventing the crushed material from passing through the filter screen 6.
[0033] When material is fed through the feed pipe 4, the material's own gravity compresses the protective plate 93. The protective plate 93 rotates along with the rotating rod 92, and the coil spring 94 deforms. After the material passes through the protective plate 93, the protective plate 93 returns to its original position under the restoring force of the coil spring 94. The protective plate 93 is attached to the fixing ring 91 with the sealing ring 95, thus achieving the effect of protecting the feed pipe 4 and preventing dust from drifting out of the crusher shell 3 through the feed pipe 4. The dustproof device 9 also achieves the effect of protecting dust and preventing dust from drifting out of the crusher shell 3 through the feed pipe 4.
Claims
1. A dust-free hammer mill, characterized in that: Includes a base (1), which is placed on the ground to provide support for the whole. A crusher shell (3) is installed on the upper surface of the base (1). A feed pipe (4) is fixedly connected to the upper surface of the crusher shell (3). A discharge pipe (5) is fixedly connected to the bottom of the crusher shell (3). A filter screen (6) is fixedly connected to the inside of the crusher housing (3), wherein there is a cavity between the filter screen (6) and the crusher housing (3); Crushing hammer (7), which rotates inside the annular filter screen (6) by means of a rotating shaft, wherein the crushing hammer (7) can crush the material inside the filter screen (6); A drive mechanism (2) is fixedly mounted on the upper surface of the base (1), wherein the drive mechanism (2) can drive the rotating shaft to rotate; A striking device (8) is provided on the arc surface of the filter screen (6), wherein the striking device (8) can cause the filter screen (6) to vibrate; Dustproof device (9) is installed inside the feed pipe (4) and can block dust.
2. The dust-free hammer mill according to claim 1, characterized in that: The striking device (8) includes a fixed cover (81), which is fixedly connected to the arc surface of the filter screen (6). Inside the fixed cover (81), there are two mutually symmetrical springs (82). One end of the spring (82) is fixedly connected to a triangular plate (83). The inclined surface of the triangular plate (83) is inclined in the direction of rotation of the crusher (7). The side of the triangular plate (83) near the fixed cover (81) is fixedly connected to a striking block (84) by means of a support rod.
3. The dust-free hammer mill according to claim 2, characterized in that: The spring (82) has a telescopic rod (86) inside, and the two ends of the telescopic rod (86) are fixedly connected to the fixed cover (81) and the triangular plate (83) respectively.
4. The dust-free hammer mill according to claim 2, characterized in that: The fixing cover (81) is fixedly connected to a rubber pad (85) at the corresponding striking block (84), wherein the size of the rubber pad (85) is larger than the size of the striking block (84).
5. The dust-free hammer mill according to claim 1, characterized in that: The feed pipe (4) is provided with a fixing ring (91) inside. The fixing ring (91) is fixedly connected inside the feed pipe (4). The feed pipe (4) is rotatably connected with two mutually symmetrical rotating rods (92). One end of the two rotating rods (92) is fixedly connected to the same protective plate (93). The arc surface of the rotating rod (92) is fitted with a coil spring (94), wherein the two ends of the coil spring (94) are fixedly connected to the protective plate (93) and the inner wall of the feed pipe (4) respectively.
6. The dust-free hammer mill according to claim 5, characterized in that: A sealing ring (95) is fixedly connected to the bottom of the fixing ring (91), wherein the size of the sealing ring (95) is adapted to the size of the fixing ring (91).
7. The dust-free hammer mill according to claim 5, characterized in that: The upper surface of the fixing ring (91) is provided with a ramp (96), wherein the ramp (96) is inclined inward towards the inside of the fixing ring (91).