A hammer mill

Abstract

This utility model relates to the technical field of hammer mills and discloses a hammer mill, including a casing. A processing shell is fixedly connected to the outside of the casing. A reciprocating mechanism, an extraction mechanism, and a back-blowing mechanism are arranged on the outside of the processing shell. The reciprocating mechanism includes a movable fixed tube, a piston plate, and a reciprocating assembly. The extraction mechanism includes a branch pipe and a feeding pipe, and a circular filter screen is arranged inside the branch pipe. The back-blowing mechanism includes a rotary cylinder, an air pipe, and a nozzle. This utility model can extract the smoke and dust generated during crushing and automatically blow it off, thereby improving ease of use. The circular filter screen can block particulate matter in the smoke and dust, thus preventing particulate matter from entering the fixed tube. It can also automatically clean the circular filter screen to prevent clogging, and can also unclog the arc-shaped filter screen, preventing material overflow.

Description

Technical Field

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

[0002] Hammer mills crush materials by applying impact force through high-speed rotating hammers (or blades). The process can be divided into three stages: impact crushing, collision grinding, and screening. Hammer mills are irreplaceable in the fine crushing of medium-hardness, brittle materials due to their high crushing ratio and flexible particle size adjustment.

[0003] Existing hammer mills generate a large amount of smoke and dust in the crushing chamber during use. This smoke and dust can affect the health of users and the surrounding environment. In addition, the screens on existing hammer mills are prone to clogging during use. When the screens are clogged, they are mostly handled manually. Manual cleaning is time-consuming and laborious, and it can also cause the equipment to stop, thus affecting the efficiency of material crushing. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a hammer mill that solves the aforementioned problems.

[0005] To solve the above technical problems, this utility model provides the following technical solution: a hammer crusher, including a machine box, a processing shell fixedly connected to the outside of the machine box, a crushing hammer and an arc-shaped filter screen arranged inside the processing shell, a feeding hopper fixedly connected to the processing shell, and a reciprocating mechanism, an extraction mechanism and a back-blowing mechanism arranged on the outside of the processing shell;

[0006] The reciprocating mechanism includes a fixed tube, a piston plate, and a reciprocating assembly. The piston plate is distributed inside the fixed tube, and the reciprocating assembly is used to drive the piston plate to move up and down reciprocally inside the fixed tube.

[0007] The extraction mechanism includes a branch pipe and a discharge pipe. The branch pipe is used to extract the smoke and dust in the discharge hopper, and the discharge pipe is used to discharge the smoke and dust. A circular filter screen is installed inside the branch pipe.

[0008] The back-blowing mechanism includes a rotary cylinder, an air pipe, and a nozzle. The rotary cylinder is used to drive the air pipe to rotate back and forth, and the nozzle is used to clean the arc-shaped filter screen by blowing air.

[0009] When the reciprocating assembly drives the piston plate to move downward, the branch pipe can extract the smoke and dust in the hopper. At the same time, the piston plate drives the nozzle to blow air onto the arc-shaped filter screen. When the reciprocating assembly drives the piston plate to move upward, the piston plate can blow the dust adhering to the circular filter screen toward the discharge pipe.

[0010] Preferably, one end of the branch pipe is connected to the fixed pipe, and the other end of the branch pipe is connected to the hopper. A one-way valve is provided on the inner side of the end of the branch pipe near the hopper.

[0011] Preferably, the feed pipe is connected to the branch pipe, and the feed pipe is distributed between the one-way outlet valve and the circular filter screen, and a one-way inlet valve is provided on the inner side of the feed pipe.

[0012] Preferably, the backflushing mechanism further includes a rotating cavity, which is located inside the processing housing and distributed on both sides of the processing housing. The air pipe is distributed inside the rotating cavity and rotatably connected to the processing housing. One end of the air pipe is fixedly connected to the output shaft of the rotary cylinder, and the other end of the air pipe away from the rotary cylinder extends out of the processing housing and is connected to a rotary joint. The end of the rotary joint away from the air pipe is connected to a connecting pipe.

[0013] Preferably, the end of the connecting pipe away from the rotary joint is connected to the fixed pipe, a one-way blowing valve is provided on the inner side of the connecting pipe, and a one-way suction valve is provided on the outer side of the fixed pipe.

[0014] Preferably, the reciprocating assembly includes a fixed frame, which is fixedly connected to the machining housing. A motor is fixedly connected to the fixed frame, and the output shaft of the motor passes through the fixed frame and is fixedly connected to a drive gear. A driven gear meshes with the outer side of the drive gear, and the driven gear is rotatably connected to the machining housing.

[0015] Preferably, a locating pin is fixedly connected to the driven gear, a connecting rod is rotatably connected to the outside of the locating pin, a sliding rod is hinged to the end of the connecting rod away from the locating pin, and the end of the sliding rod away from the connecting rod passes through the fixed tube and is fixedly connected to the piston plate.

[0016] Preferably, the inner side of the hopper is threaded with a hopper cover, the hopper cover is provided with a handle, the bottom of the machine box is provided with a power distribution box, and the bottom of the power distribution box is provided with a movable base.

[0017] Compared with the prior art, the present invention provides a hammer mill with the following advantages:

[0018] 1. In this utility model, when the crushing hammer is crushing, the reciprocating assembly drives the piston plate to move downward in the fixed tube. After the piston plate moves downward, a negative pressure is generated in the fixed tube. At this time, the dust in the hopper and the processing shell enters the branch pipe. The circular filter screen in the branch pipe blocks the particulate matter in the dust. After the reciprocating assembly drives the piston plate to move upward, the piston plate blows the gas extracted from the fixed plate towards the branch pipe. At this time, the gas back-blowing against the circular filter screen blows the particulate matter on the filter screen into the feed pipe, and then discharges through the feed pipe. This achieves the simultaneous extraction of dust generated during crushing and automatic blowing off of the dust, thereby improving the convenience of use. In addition, the circular filter screen can block the particulate matter in the dust, thereby preventing the particulate matter from entering the fixed tube. At the same time, it can also automatically clean the circular filter screen to prevent it from clogging.

[0019] 2. In this utility model, during the crushing process, the air pipe and nozzle are driven to rotate 30 degrees back and forth by a rotary cylinder. Then, when the piston plate is driven to move down by the reciprocating assembly, the piston plate presses the gas in the fixed pipe toward the air pipe, and then sprays it out through the nozzle on the air pipe. Since the nozzle is located below the arc-shaped filter screen, the nozzle can backflush the arc-shaped filter screen, thereby blowing away the particles that are blocked in the arc-shaped filter screen, thus clearing the arc-shaped filter screen.

[0020] 3. In this utility model, by setting up a hopper cover, the material is poured into the processing shell through the feeding hopper during crushing, and then the feeding hopper is sealed by the hopper cover, so that the material will not overflow from the feeding hopper during subsequent crushing. Attached Figure Description

[0021] Figure 1 This is a first-view schematic diagram of the present invention;

[0022] Figure 2 This is a second-view schematic diagram of the present invention;

[0023] Figure 3 This is a side sectional view of the processed shell of this utility model;

[0024] Figure 4 This is a schematic diagram of the side cut of the shell in this utility model.

[0025] Figure 5 This is a side sectional view of the reciprocating mechanism, extraction mechanism, and backflushing mechanism of this utility model;

[0026] Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point A in the middle.

[0027] In the diagram: 1. Chassis; 2. Processing shell; 3. Crushing hammer; 4. Arc-shaped filter screen; 5. Reciprocating mechanism; 51. Fixed pipe; 511. One-way suction valve; 52. Piston plate; 53. Reciprocating assembly; 531. Fixed frame; 532. Motor; 533. Drive gear; 534. Driven gear; 535. Positioning pin; 536. Connecting rod; 537. Slide rod; 6. Extraction mechanism; 61. Branch pipe; 611. One-way outlet valve; 62. Feed pipe; 621. One-way inlet valve; 63. Circular filter screen; 7. Backflushing mechanism; 71. Rotary cylinder; 72. Air pipe; 73. Nozzle; 74. Rotating chamber; 75. Rotary joint; 76. Connecting pipe; 77. One-way air valve; 8. Feed hopper; 81. Hopper cover. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a hammer crusher.

[0030] Example 1: Please refer to Figures 1-6 A hammer mill includes a casing 1, a processing shell 2 fixedly connected to the outside of the casing 1, a crushing hammer 3 and an arc-shaped filter screen 4 disposed inside the processing shell 2, a feeding hopper 8 fixedly connected to the processing shell 2, a hopper cover 81 threadedly connected to the inside of the feeding hopper 8, a handle disposed on the hopper cover 81, an electrical distribution box disposed at the bottom of the casing 1, a movable base disposed at the bottom of the electrical distribution box, and a reciprocating mechanism 5, an extraction mechanism 6 and a back-blowing mechanism 7 disposed on the outside of the processing shell 2.

[0031] The reciprocating mechanism 5 includes a fixed tube 51, a piston plate 52, and a reciprocating assembly 53. The piston plate 52 is distributed inside the fixed tube 51, and the reciprocating assembly 53 is used to drive the piston plate 52 to move up and down reciprocally inside the fixed tube 51.

[0032] The extraction mechanism 6 includes a branch pipe 61 and a discharge pipe 62. The branch pipe 61 is used to extract the smoke and dust in the discharge hopper 8, and the discharge pipe 62 is used to discharge the smoke and dust. A circular filter screen 63 is installed inside the branch pipe 61.

[0033] Backflush mechanism 7 includes a rotary cylinder 71, an air pipe 72 and a nozzle 73. The rotary cylinder 71 is used to drive the air pipe 72 to rotate back and forth, and the nozzle 73 is used to blow air to clean the arc-shaped filter screen 4.

[0034] When the reciprocating assembly 53 drives the piston plate 52 to move downward, the branch pipe 61 can extract the smoke and dust in the feed hopper 8. At the same time, the piston plate 52 drives the nozzle 73 to blow air onto the arc-shaped filter screen 4. When the reciprocating assembly 53 drives the piston plate 52 to move upward, the piston plate 52 can blow the dust adhering to the circular filter screen 63 down to the feed pipe 62.

[0035] Initially, the piston plate 52 is located on the inner top surface of the fixed tube 51. During use, material is poured into the processing shell 2 through the hopper 8, and then the hopper 8 is closed by the lid 81. The material is then crushed by the rotating crushing hammer 3. The crushed material is then filtered by the arc-shaped filter screen 4 and falls down. While the crushing hammer 3 is rotating, the user starts the reciprocating assembly 53 and the rotary cylinder 71. The reciprocating assembly 53 drives the piston plate 52 to move downwards within the fixed tube 51. After the piston plate 52 moves downwards, a negative pressure is generated within the fixed tube 51. At this time, the dust from the hopper 8 and the processing shell 2 enters the branch pipe 61. The circular filter screen 63 in the branch pipe 61 then blocks the particulate matter in the dust. Gas then enters the fixed tube 51, and simultaneously, the downward movement of the piston plate 52 forces the gas from the fixed tube 51 into the air pipe 72. The gas is sprayed through the nozzle 73 on the air pipe 72, and the gas sprayed from the nozzle 73 back-blown onto the arc-shaped filter screen 4, thereby blowing away the material blocking the arc-shaped filter screen 4 and clearing the arc-shaped filter screen 4. The rotary cylinder 71 drives the air pipe 72 and the nozzle 73 to rotate back and forth, thereby increasing the back-blowing range of the arc-shaped filter screen 4. Then, after the reciprocating assembly 53 drives the piston plate 52 to move upward, the piston plate 52 moves upward and blows the gas in the fixed pipe 51 to the branch pipe 61. At this time, the gas back-blown onto the circular filter screen 63, thereby blowing the particles on the circular filter screen 63 down to the feed pipe 62, and then discharged through the feed pipe 62. This achieves the ability to extract smoke and dust, automatically discharge the extracted smoke and dust, and back-blown onto the arc-shaped filter screen 4, thereby clearing the arc-shaped filter screen 4.

[0036] It should be noted that the machine housing 1 is equipped with a drive mechanism for driving the crushing hammer 3 to rotate, and the processing shell 2 is also equipped with a feeding port.

[0037] Example 2: See Figures 1-6 Unlike the first embodiment described above, one end of the branch pipe 61 is connected to the fixed pipe 51, and the other end of the branch pipe 61 is connected to the discharge hopper 8. A one-way valve 611 is provided on the inner side of the end of the branch pipe 61 near the discharge hopper 8. The discharge pipe 62 is connected to the branch pipe 61, and the discharge pipe 62 is distributed between the one-way valve 611 and the circular filter screen 63. A one-way inlet valve 621 is provided on the inner side of the discharge pipe 62.

[0038] When the piston plate 52 moves downward, the dust in the hopper 8 enters the branch pipe 61 through the one-way valve 611. At this time, the circular filter screen 63 blocks the particulate matter in the gas. Then the gas enters the fixed pipe 51. When the piston plate 52 moves upward, the piston plate 52 presses the previously extracted gas back against the branch pipe 61. At this time, the gas back-blowing against the circular filter screen 63 blows out the particulate matter on the circular filter screen 63. Since the branch pipe 61 is equipped with a one-way valve 611 at the end connected to the hopper 8, the gas squeezed by the piston plate 52 when it moves upward enters the feed pipe 62 after being blown towards the circular filter screen 63. Then it is discharged after passing through the one-way valve 621 on the feed pipe 62. Thus, the gas containing dust can be extracted at the same time, and the particulate matter can be automatically blown out.

[0039] Example 3, see Figures 1-6 Unlike the second embodiment described above, the back-blowing mechanism 7 also includes a rotating cavity 74, which is located inside the processing shell 2 and distributed on both sides of the processing shell 2. The air pipe 72 is distributed inside the rotating cavity 74 and is rotatably connected to the processing shell 2. One end of the air pipe 72 is fixedly connected to the output shaft of the rotary cylinder 71. The other end of the air pipe 72, away from the rotary cylinder 71, extends out of the processing shell 2 and is connected to a rotary joint 75. The end of the rotary joint 75, away from the air pipe 72, is connected to a connecting pipe 76. The end of the connecting pipe 76, away from the rotary joint 75, is connected to a fixed pipe 51. A one-way blowing valve 77 is provided inside the connecting pipe 76, and a one-way suction valve 511 is provided outside the fixed pipe 51.

[0040] During crushing, the rotary cylinder 71 is activated, which drives the air pipe 72 to rotate reciprocally within the rotating chamber 74. The rotation of the air pipe 72 drives the nozzle 73 to rotate reciprocally. When the piston plate 52 moves down, the piston plate 52 squeezes the gas in the original fixed pipe 51 into the connecting pipe 76. After that, the gas enters the one-way blowing valve 77 and then enters the air pipe 72 through the rotary joint 75 connected to the connecting pipe 76. After that, it is sprayed out through the nozzle 73 on the air pipe 72. The gas sprayed out by the nozzle 73 back-blowing the arc-shaped filter screen 4, thereby back-blowing and unblocking the arc-shaped filter screen 4. After that, when the piston plate 52 moves up, it draws in air through the one-way suction valve 511, thereby making the piston plate 52 move better.

[0041] Example 4, see Figures 1-6Unlike Embodiment 3 above, the reciprocating assembly 53 includes a fixed frame 531, which is fixedly connected to the processing housing 2. A motor 532 is fixedly connected to the fixed frame 531. The output shaft of the motor 532 passes through the fixed frame 531 and is fixedly connected to a drive gear 533. A driven gear 534 meshes with the outer side of the drive gear 533. The driven gear 534 is rotatably connected to the processing housing 2. A positioning pin 535 is fixedly connected to the driven gear 534. A connecting rod 536 is rotatably connected to the outer side of the positioning pin 535. A sliding rod 537 is hinged to the end of the connecting rod 536 away from the positioning pin 535. The end of the sliding rod 537 away from the connecting rod 536 passes through the fixed tube 51 and is fixedly connected to the piston plate 52.

[0042] In use, the motor 532 drives the drive gear 533 to rotate, the drive gear 533 rotates and drives the driven gear 534 to rotate, the driven gear 534 rotates and drives the positioning pin 535 to rotate, the positioning pin 535 moves and drives the connecting rod 536 to move, the connecting rod 536 moves and drives the slide rod 537 to move, the slide rod 537 moves and drives the piston plate 52 to move. As the driven gear 534 rotates, the driven gear 534 drives the connecting rod 536 and the slide rod 537 to move back and forth through the positioning pin 535, thus realizing the reciprocating drive of the piston plate 52.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hammer mill, comprising a casing, a processing shell fixedly connected to the outside of the casing, a crushing hammer and an arc-shaped filter screen disposed inside the processing shell, and a feeding hopper fixedly connected to the processing shell, characterized in that: The outer side of the processing shell is provided with a reciprocating mechanism, an extraction mechanism and a back-blowing mechanism; The reciprocating mechanism includes a fixed tube, a piston plate, and a reciprocating assembly. The piston plate is distributed inside the fixed tube, and the reciprocating assembly is used to drive the piston plate to move up and down reciprocally inside the fixed tube. The extraction mechanism includes a branch pipe and a discharge pipe. The branch pipe is used to extract the smoke and dust in the discharge hopper, and the discharge pipe is used to discharge the smoke and dust. A circular filter screen is installed inside the branch pipe. The back-blowing mechanism includes a rotary cylinder, an air pipe, and a nozzle. The rotary cylinder is used to drive the air pipe to rotate back and forth, and the nozzle is used to clean the arc-shaped filter screen by blowing air. When the reciprocating assembly drives the piston plate to move downward, the branch pipe can extract the smoke and dust in the hopper. At the same time, the piston plate drives the nozzle to blow air onto the arc-shaped filter screen. When the reciprocating assembly drives the piston plate to move upward, the piston plate can blow the dust adhering to the circular filter screen toward the discharge pipe.

2. The hammer mill according to claim 1, characterized in that: One end of the branch pipe is connected to the fixed pipe, and the other end of the branch pipe is connected to the hopper. A one-way valve is provided on the inner side of the end of the branch pipe near the hopper.

3. A hammer mill according to claim 2, characterized in that: The discharge pipe is connected to the branch pipe, and the discharge pipe is distributed between the one-way outlet valve and the circular filter screen. A one-way inlet valve is provided on the inner side of the discharge pipe.

4. A hammer mill according to claim 1, characterized in that: The backflush mechanism also includes a rotating cavity, which is located inside the processing housing and distributed on both sides of the processing housing. The air pipe is distributed inside the rotating cavity and is rotatably connected to the processing housing. One end of the air pipe is fixedly connected to the output shaft of the rotary cylinder, and the other end of the air pipe away from the rotary cylinder extends out of the processing housing and is connected to a rotary joint. The end of the rotary joint away from the air pipe is connected to a connecting pipe.

5. A hammer mill according to claim 4, characterized in that: The end of the connecting pipe away from the rotary joint is connected to the fixed pipe. A one-way blowing valve is provided on the inner side of the connecting pipe, and a one-way suction valve is provided on the outer side of the fixed pipe.

6. A hammer mill according to claim 1, characterized in that: The reciprocating assembly includes a fixed frame, which is fixedly connected to the machining housing. A motor is fixedly connected to the fixed frame, and the output shaft of the motor passes through the fixed frame and is fixedly connected to a drive gear. A driven gear meshes with the outer side of the drive gear, and the driven gear is rotatably connected to the machining housing.

7. A hammer mill according to claim 6, characterized in that: A locating pin is fixedly connected to the driven gear, and a connecting rod is rotatably connected to the outside of the locating pin. A sliding rod is hinged to the end of the connecting rod away from the locating pin, and the end of the sliding rod away from the connecting rod passes through the fixed tube and is fixedly connected to the piston plate.

8. A hammer mill according to claim 1, characterized in that: The inner side of the hopper is threaded with a hopper cover, and the hopper cover is provided with a handle. The bottom of the machine box is provided with a power distribution box, and the bottom of the power distribution box is provided with a movable base.

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