A counterattack hammer crusher for efficient crushing

Abstract

The present invention relates to the technical field of hammer crushers, and proposes an impact hammer crusher with high efficiency crushing, comprising: a bottom plate, a re-crushing mechanism provided on the bottom plate, a transmission mechanism provided on the outside of the crushing mechanism, the transmission mechanism including two transmission components, and a feeding mechanism provided at the bottom of the crushing mechanism for dispersing small-volume materials crushed by the hammer crushing assembly onto the re-crushing mechanism to prevent the materials from accumulating on the re-crushing mechanism. Afterwards, the two transmission components, in coordination with the transmission of the main shaft, can synchronously crush the materials falling from the feeding mechanism through the re-crushing mechanism, without the need for a separate drive device, so that small-volume materials can be crushed. Furthermore, by adjusting the installation position of the fixed block on the transmission mechanism, the downward pressure of the pressing inclined plate on the re-crushing mechanism can be adjusted as needed, thereby making the discharge particle size more uniform. The present invention is simple to operate, has high crushing efficiency, and has good practical performance.

Description

Technical Field

[0001] The present invention relates to the technical field of hammer crushers, and in particular to an impact hammer crusher with high-efficiency crushing. Background Art

[0002] Impact crushers, also known as counterattack crushers, are primarily used for processing materials that frequently require relocation in industries such as metallurgy, chemicals, building materials, and hydropower. They are particularly useful for processing mobile stone materials in highway, railway, and hydropower projects. Various configurations are available, depending on the type of raw material being processed, the scale, and the requirements for the finished product. Impact crushers can process materials with side lengths of 100-500 mm or less, have a compressive strength of up to 350 MPa, a high crushing ratio, and cubic particle formation after crushing. They are widely used for fine crushing in industries such as building materials, ore crushing, railways, highways, energy, transportation, cement, mining, and chemicals. The hammer crusher within an impact crusher operates by using a high-speed swinging hammer to crush and eject the material, which is then impacted by an impact plate.

[0003] However, the current impact hammer crusher only crushes the material through the cooperation of the hammer head and the impact plate. The small-volume material that fails to meet the requirements falls to the bottom of the body frame (the volume is larger than the discharge hole) and is re-crushed by the swinging hammer head. However, since the material is small in volume and low in mass at this time, the inertia is small when it is impacted by the hammer head, resulting in insufficient impact force, and it often needs to be re-impacted multiple times. If the accumulated amount is large, it will indirectly affect the crushing work of other materials, and the crushing efficiency is poor. In addition, in order to ensure that the crushed material can be discharged smoothly and avoid blockage at the discharge hole at the bottom of the body frame, the aperture of the discharge hole is often larger than the size of the crushed material, which makes the particle size uniformity of the material after crushing and discharge poor. In subsequent processing work, the material needs to be re-screened through a screen and the unqualified material needs to be processed again, which increases work costs and reduces work efficiency.

[0004] In view of this, the present invention proposes an impact hammer crusher with high crushing efficiency. Summary of the Invention

[0005] The present invention provides an impact hammer crusher with high crushing efficiency, which solves the problems of poor crushing efficiency and poor uniformity of particle size of materials after crushing in the impact hammer crusher in the related art.

[0006] The technical solution of the present invention is as follows: an impact hammer crusher with high efficiency crushing, comprising: a bottom plate, a crushing mechanism disposed on the upper side of the bottom plate, an F-shaped bracket fixedly connected to the top of the bottom plate for supporting the crushing mechanism, and a supporting bracket; the crushing mechanism includes a crushing frame, a main shaft rotatably connected within the crushing frame, and a hammer crushing assembly disposed on the main shaft;

[0007] A driving mechanism is provided on one side of the crushing frame for rotating the main shaft, thereby driving the hammer crushing assembly to crush the material;

[0008] A feeding mechanism is provided at the bottom of the crushing mechanism for unloading the material after being crushed by the hammer crushing assembly;

[0009] A re-crushing mechanism is provided on the bottom plate, and a transmission mechanism is provided outside the crushing mechanism. The transmission mechanism includes transmission components symmetrically provided on the front and rear sides of the crushing mechanism. The transmission components, in cooperation with the main shaft, can crush the materials falling from the feeding mechanism through the re-crushing mechanism.

[0010] A dust removal mechanism is provided on the bottom plate, and the dust removal mechanism, in cooperation with the driving mechanism, can suck the dust generated inside the crushing frame due to crushing.

[0011] Preferably, the hammer crushing assembly includes a hammer head, several shafts, multiple partitions fixed at equal distances on the outer wall of the main shaft, and a first impact plate and a second impact plate installed on the inner side of the crushing frame. The shaft fixes the multiple partitions in series, and the hammer head is rotatably connected to the shaft located between two adjacent partitions. A discharge chute is provided through the bottom of the crushing frame.

[0012] Preferably, the driving mechanism includes a motor, a first pulley, a transmission belt and a second pulley. The motor is mounted on a support bracket. The first pulley is fixedly connected to the end of the motor output shaft. The main shaft extends to the outside of the crushing frame and passes through and is fixed inside the second pulley. The transmission belt is connected between the first pulley and the second pulley.

[0013] Preferably, the re-crushing mechanism includes a base fixedly connected to the bottom plate, a movable seat is arranged on the base, baffles are fixed on both sides of the top of the movable seat, a pressing slope is arranged on the top of the movable seat located between the two baffles, an arc block is fixed at the intersection of the baffle and the lower part of the pressing slope, and a pressing slope is provided in a sliding sleeve between the two baffles.

[0014] Preferably, the re-crushing mechanism also includes two T-shaped slides opened inside the base, and a T-shaped slide rod is slidably sleeved inside the two T-shaped slides. The top end of the T-shaped slide rod is fixedly connected to the bottom of the movable seat, and one end of the T-shaped slide rod is fixedly connected to a reset spring, and the other end of the reset spring is fixedly connected to the end of the T-shaped slide.

[0015] Preferably, the transmission component includes an H-shaped frame fixedly connected to the outer wall of the crushing frame, a turntable is provided on the inner side of the H-shaped frame, the main shaft rotates through the H-shaped frame and is fixedly connected to the turntable, a transmission frame is provided on one side of the turntable, and vertical rods are fixed at the upper and lower ends of the transmission frame, the vertical rods extend to the inside of the H-shaped frame and are slidably connected to it, and the vertical rods located on the lower side are fixedly connected to the pressing inclined plate.

[0016] Preferably, an adjustment groove is provided on the outer wall of the turntable, two rows of bolt holes are symmetrically provided on the adjustment groove, a fixed block is slidably provided on the inner side of the adjustment groove, the fixed block and the adjustment groove are fixedly connected by fastening bolts and bolt holes, a shifting post is fixed on the outer wall of the fixed block, and the shifting post is slidably sleeved on the inner side of the transmission frame.

[0017] Preferably, the feeding mechanism includes a feeding frame fixedly connected to the bottom of the crushing frame, a through opening connected to the interior of the crushing frame is opened at the top of the feeding frame, a vibration plate is rotatably connected to the inside of the feeding frame through a rotating shaft, and an elastic rope is connected between the vibration plate and the top of the feeding frame to suspend the vibration plate.

[0018] Preferably, a plurality of guide bars are fixed on the top of the vibration plate, the lower gap between two adjacent guide bars is larger than the upper gap, a vibration motor is fixedly installed on the bottom of the vibration plate, and a guide frame is fixed between the feed frame and the vibration plate.

[0019] Preferably, the dust removal mechanism includes a mounting plate fixedly connected to the top of the base plate, an air hood is fixed on the mounting plate, an impeller is arranged inside the air hood, a rotating rod is fixed at the center of the first pulley, the rotating rod rotates and extends to the inside of the air hood and is fixedly connected to the impeller, an exhaust duct is fixedly connected to the side wall of the air hood, an air duct is fixedly connected at the center of the air hood, and a suction duct is fixedly connected between the air duct and the crushing frame.

[0020] The working principle and beneficial effects of the present invention are:

[0021] 1. In the present invention, a re-crushing mechanism is provided on the bottom plate, and a transmission mechanism is provided on the outside of the crushing mechanism. The transmission mechanism includes transmission components symmetrically arranged on the front and rear sides of the crushing mechanism. A feeding mechanism is provided at the bottom of the crushing mechanism for dispersing small-volume materials crushed by the hammer crushing assembly onto the re-crushing mechanism to prevent the materials from accumulating on the re-crushing mechanism. Afterwards, the two transmission components, in coordination with the transmission of the main shaft, can synchronously crush the materials falling from the feeding mechanism through the re-crushing mechanism, without the need for a separate drive device, so that small-volume materials can be crushed. In addition, by adjusting the installation position of the fixed block on the transmission mechanism, the downward pressure of the material pressing inclined plate on the re-crushing mechanism can be adjusted as needed, thereby making the discharge particle size more uniform, simple to operate, and highly efficient in crushing, with excellent practical performance.

[0022] 2. In the present invention, a dust removal mechanism is provided on the bottom plate. The dust removal mechanism cooperates with the drive mechanism, and no separate drive device is required. The dust generated by the crushing inside the crushing frame can be sucked out, thereby preventing excessive dust from polluting the working environment and reducing the harm to the workers' health. The machine has good safety performance.

[0023] 3. In the present invention, when the pressing inclined plate moves downward, the arc-shaped block fixed at the lower part of the pressing slope will be squeezed, causing the movable seat to move to the left, the T-shaped slide bar to move to the left, and the reset spring to be stretched. When the pressing inclined plate moves upward, the movable seat moves to the right quickly under the action of the reset spring. Under the action of inertia, it can assist the material placed on the pressing slope to move to the left and discharge, thereby avoiding the accumulation of material after being crushed on the pressing slope. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of an impact hammer crusher with high efficiency crushing proposed by the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of the crushing mechanism proposed in the present invention;

[0027] Figure 3 This is a schematic diagram of the transmission mechanism structure proposed by the present invention;

[0028] Figure 4 for Figure 3 A in the middle is an enlarged structural diagram;

[0029] Figure 5 This is a schematic diagram of the structural composition of the feeding mechanism proposed in the present invention;

[0030] Figure 6 This is a schematic diagram of the three-dimensional structure of the re-crushing mechanism proposed in the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the re-crushing mechanism proposed in the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of the dust removal mechanism proposed in the present invention;

[0033] In the figure: 1. F-type bracket; 2. Transmission mechanism; 21. Transmission parts; 211. Transmission frame; 212. Vertical pole; 213. Turntable; 214. H-type frame; 215. Shifting column; 216. Fixing block; 217. Adjusting slot; 218. Bolt hole; 219. Fastening bolt; 3. Crushing mechanism; 31. First impact plate; 32. Second impact plate; 33. Crushing frame; 34. Spacer; 35. Hammer; 36. Discharge chute; 37. Spindle; 38. Shaft; 4. Support bracket; 5. Driving mechanism; 51. Motor; 52. First pulley; 53. Transmission belt; 54. First Second pulley; 6. Dust removal mechanism; 61. Mounting plate; 62. Induced draft hood; 63. Induced draft duct; 64. Exhaust duct; 65. Suction pipe; 66. Rotating rod; 67. Impeller; 7. Re-crushing mechanism; 71. Pressing inclined plate; 72. Arc block; 73. Base; 74. Moving seat; 75. Pressing slope; 76. T-type slideway; 77. T-type slide bar; 78. Return spring; 79. Baffle; 8. Feeding mechanism; 81. Guide frame; 82. Feeding frame; 83. Through port; 84. Rotating shaft; 85. Vibrating plate; 86. Vibrating motor; 87. Guide bar; 88. Elastic rope; 9. Bottom plate. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0035] See also Figure 1 and Figure 2A high-efficiency impact hammer crusher comprises: a base plate 9, a crushing mechanism 3 disposed on the upper side of the base plate 9, an F-shaped bracket 1 fixedly connected to the top of the base plate 9 for supporting the crushing mechanism 3, and a support bracket 4. The crushing mechanism 3 includes a crushing frame 33, within which a main shaft 37 is rotatably connected, and a hammer crushing assembly is mounted on the main shaft 37. The hammer crushing assembly comprises a hammer head 35, a plurality of shafts 38, a plurality of partition plates 34 equidistantly fixed to the outer wall of the main shaft 37, and a first impact plate 31 and a second impact plate 32 mounted on the inner side of the crushing frame 33. The shaft 38 secures the plurality of partition plates 34 in series. The hammer head 35 is rotatably connected to the shaft 38 located between two adjacent partition plates 34. A discharge chute 36 is provided through the bottom of the crushing frame 33. A drive mechanism 5 is disposed on one side of the crushing frame 33 for rotating the main shaft 37, thereby driving the hammer crushing assembly to crush the material. The drive mechanism 5 includes a motor 51, a first pulley 52, a transmission belt 53, and a second pulley 54. The motor 51 is mounted on the support bracket 4. The first pulley 52 is fixedly connected to the end of the output shaft of the motor 51. The main shaft 37 extends to the outside of the crushing frame 33 and passes through and is fixed inside the second pulley 54. The transmission belt 53 is connected between the first pulley 52 and the second pulley 54. When the motor 51 is started, the motor 51 drives the first pulley 52 to rotate via its output shaft. The first pulley 52 drives the second pulley 54 to rotate via the transmission belt 53. The second pulley 54 drives the main shaft 37 to rotate. The main shaft 37 drives the multiple partition plates 34 to rotate synchronously. The partition plates 34 drive the shaft 38 to revolve. The shaft 38 drives the hammer head 35 to swing, striking and crushing the material entering the crushing frame 33.

[0036] See also Figure 1 and Figure 5A feed mechanism 8 is located at the bottom of the crushing mechanism 3, serving to discharge material crushed by the hammer crushing assembly. The feed mechanism 8 comprises a feed frame 82 fixedly connected to the bottom of the crushing frame 33. A through-hole 83 is defined at the top of the feed frame 82, communicating with the interior of the crushing frame 33. A vibrating plate 85 is rotatably connected to the inside of the feed frame 82 via a rotating shaft 84. An elastic rope 88 suspends the vibrating plate 85 from the top of the feed frame 82. Multiple guide bars 87 are fixed to the top of the vibrating plate 85, with the gap between adjacent guide bars 87 being greater than the gap between adjacent guide bars 87. A vibration motor 86 is fixedly mounted at the bottom of the vibrating plate 85, and a guide frame 81 is secured between the feed frame 82 and the vibrating plate 85. Material crushed by the hammers 35 in the crushing frame 33 falls through the discharge chute 36 and through-hole 83 onto the vibrating plate 85. Any oversized material is re-crushed by the swinging of the hammers 35. (It is worth noting that the width of the discharge chute 36 in the present invention is larger than the diameter of the discharge hole of the existing crusher, which facilitates smaller materials (which may be materials of unqualified size) to fall directly from the discharge chute 36 without the need for the hammer head 35 to re-impact them), and the vibration motor 86 is started. The vibration motor 86 vibrates the inclined vibration plate 85, so that the material falling onto the vibration plate 85 can be vibrated and fall by the vibration plate 85, and under the guidance of the guide bar 87, the material falling onto the vibration plate 85 can be dispersed as much as possible to avoid accumulation.

[0037] See also Figure 1 、 Figure 6 as well as Figure 7A re-crushing mechanism 7 is provided on the bottom plate 9. The re-crushing mechanism 7 includes a base 73 fixedly connected to the bottom plate 9, a movable seat 74 is provided on the base 73, baffles 79 are fixed on both sides of the top of the movable seat 74, a pressing slope 75 is provided on the top of the movable seat 74 between the two baffles 79, an arc-shaped block 72 is fixed at the intersection of the baffle 79 and the pressing slope 75, and a pressing inclined plate 71 is slidably sleeved between the two baffles 79. The re-crushing mechanism 7 also includes two T-shaped slides 76 opened inside the base 73, and a T-shaped slide rod 77 is slidably sleeved inside the two T-shaped slides 76. The top of the T-shaped slide rod 77 is fixedly connected to the bottom of the movable seat 74, and one end of the T-shaped slide rod 77 is fixedly connected to the return spring 78, and the other end of the return spring 78 is fixedly connected to the end of the T-shaped slide 76. The materials shaken off from the vibrating plate 85 are dispersed and fall onto the inclined pressing slope 75, rolling downward on the pressing slope 75. At the same time, the pressing slope 71 is controlled to move downward and squeeze the pressing slope 75, so that the unqualified materials between the pressing slope 71 and the pressing slope 75 due to their large volume can be further crushed. In the process of the pressing slope 71 moving downward, the arc block 72 is squeezed, causing the movable seat 74 to move left, the T-shaped slide 77 to move left, and the return spring 78 to stretch. When the pressing slope 71 moves upward, the movable seat 74 moves quickly to the right under the action of the return spring 78. Under the action of inertia, it can assist the materials placed on the pressing slope 75 to move left and discharge.

[0038] See also Figure 1 、 Figure 3 as well as Figure 4A transmission mechanism 2 is provided outside the crushing mechanism 3. The transmission mechanism 2 includes transmission components 21 symmetrically arranged on the front and rear sides of the crushing mechanism 3. The transmission components 21, in conjunction with the main shaft 37, can crush the material falling from the feeding mechanism 8 through the re-crushing mechanism 7. The transmission component 21 includes an H-shaped frame 214 fixedly connected to the outer wall of the crushing frame 33. A turntable 213 is provided inside the H-shaped frame 214. The main shaft 37 rotates through the H-shaped frame 214 and is fixedly connected to the turntable 213. A transmission frame 211 is provided on one side of the turntable 213. Vertical rods 212 are fixed to the upper and lower ends of the transmission frame 211. The vertical rods 212 extend into the interior of the H-shaped frame 214 and are slidably connected thereto. The vertical rod 212 located on the lower side is fixedly connected to the pressing inclined plate 71. An adjustment slot 217 is formed on the outer wall of the turntable 213, and two rows of bolt holes 218 are symmetrically formed on the adjustment slot 217. A fixing block 216 is slidably mounted inside the adjustment slot 217. The fixing block 216 is fixedly connected to the adjustment slot 217 via a fastening bolt 219 and the bolt hole 218. A shifting post 215 is fixed to the outer wall of the fixing block 216 and slidably sleeved inside the transmission frame 211. When the main shaft 37 rotates, it can drive the turntable 213 to rotate, and the turntable 213 drives the shifting post 215 to revolve. When the shifting post 215 revolves, it pushes the transmission frame 211, and the transmission frame 211 drives the vertical rod 212 to slide up and down inside the H-shaped frame 214. The vertical rod 212 that slides up and down drives the press inclined plate 71 to move up and down.

[0039] It is worth noting that, with the combined action of the fastening bolts 219 and the bolt holes 218, it is convenient to select a suitable position for installation of the fixing block 216 inside the adjustment groove 217. When the installation position of the fixing block 216 is closer to the center of the turntable 213, the amplitude of the up and down swing of the vertical rod 212 is smaller, so that the downward pressure of the pressing inclined plate 71 can be adjusted as needed to make the discharge particle size more uniform.

[0040] See also Figure 1 and Figure 8A dust removal mechanism 6 is provided on the bottom plate 9. The dust removal mechanism 6, in cooperation with the drive mechanism 5, can suck the dust generated by the crushing inside the crushing frame 33. The dust removal mechanism 6 includes a mounting plate 61 fixedly connected to the top of the bottom plate 9. A draft hood 62 is fixed on the mounting plate 61. An impeller 67 is provided inside the draft hood 62. A rotating rod 66 is fixed at the center of the first pulley 52. The rotating rod 66 rotates and extends into the interior of the draft hood 62 and is fixedly connected to the impeller 67. An exhaust pipe 64 is fixedly connected to the side wall of the draft hood 62. An draft duct 63 is fixedly connected to the center of the draft hood 62. A suction pipe 65 is fixedly connected between the draft duct 63 and the crushing frame 33. During the rotation of the first pulley 52, it can drive the rotating rod 66 to rotate, and the rotating rod 66 drives the impeller 67 to rotate at high speed, so that the pressure inside the induced draft hood 62 changes. The induced draft hood 62 sucks the dust generated by the crushing inside the crushing frame 33 through the induced draft duct 63 and the suction pipe 65, and discharges the sucked dust through the exhaust pipe 64. A dust bag can be installed at the end of the exhaust pipe 64 to collect the discharged dust.

[0041] Working Principle and Usage Process: During operation, the motor 51 is started, and the motor 51 drives the first pulley 52 to rotate via its output shaft. The first pulley 52 drives the second pulley 54 to rotate via the transmission belt 53. The second pulley 54 drives the main shaft 37 to rotate. The main shaft 37 drives the multiple partition plates 34 to rotate synchronously. The partition plates 34 drive the shaft 38 to revolve. The shaft 38 drives the hammer 35 to swing, striking and crushing the material entering the crushing frame 33. The material in the crushing frame 33, crushed by the hammer 35, falls through the discharge chute 36 and the opening 83 onto the vibrating plate 85. Some oversized material is re-crushed during the swinging of the hammer 35. The vibration motor 86 is started, and the vibration motor 86 vibrates the inclined vibrating plate 85, so that the material falling onto the vibrating plate 85 can be vibrated and dropped. Under the guidance of the guide bar 87, the material falling onto the vibrating plate 85 can be dispersed as much as possible to avoid accumulation. During the rotation of the main shaft 37, the turntable 213 is driven to rotate, and the turntable 213 drives the shifting post 215 to revolve. When the shifting post 215 revolves, it pushes the transmission frame 211, and the transmission frame 211 drives the vertical rod 212 to slide up and down inside the H-shaped frame 214. The vertical rod 212 that slides up and down drives the pressing ramp 71 to move up and down. The materials shaken off from the vibration plate 85 are dispersed and fall onto the inclined pressing slope 75, rolling downward on the pressing slope 75. At the same time, the pressing ramp 71 is controlled to move downward and squeeze with the pressing slope 75, so that the unqualified materials between the pressing ramp 71 and the pressing slope 75 due to their large volume can be further crushed. As the pressing sloping plate 71 moves downward, it squeezes the arc block 72, causing the movable seat 74 to move leftward, the T-shaped slide bar 77 to move leftward, and the return spring 78 to stretch. When the pressing sloping plate 71 moves upward, the return spring 78 causes the movable seat 74 to move rightward quickly. Under the action of inertia, the material placed on the pressing slope 75 can be assisted to move leftward and discharge. In addition, as the first pulley 52 rotates, it can drive the rotating rod 66 to rotate. The rotating rod 66 drives the impeller 67 to rotate at high speed, causing the pressure inside the hood 62 to change. The hood 62 sucks the dust generated by the crushing inside the crushing frame 33 through the duct 63 and the suction pipe 65, and discharges the sucked dust through the exhaust pipe 64. A dust bag can be installed at the end of the exhaust pipe 64 to collect the discharged dust.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An impact hammer crusher with high efficiency, comprising: A bottom plate (9), a crushing mechanism (3) arranged on the upper side of the bottom plate (9), an F-shaped bracket (1) fixedly connected to the top of the bottom plate (9) for supporting the crushing mechanism (3), and a supporting bracket (4), wherein the crushing mechanism (3) includes a crushing frame (33), a main shaft (37) is rotatably connected inside the crushing frame (33), and a hammer crushing assembly is arranged on the main shaft (37); A driving mechanism (5) is provided on one side of the crushing frame (33) for rotating the main shaft (37) to drive the hammer crushing assembly to crush the material; A feeding mechanism (8) is provided at the bottom of the crushing mechanism (3) for unloading the material after being crushed by the hammer crushing assembly; A re-crushing mechanism (7) is provided on the bottom plate (9), and a transmission mechanism (2) is provided outside the crushing mechanism (3). The transmission mechanism (2) includes transmission components (21) symmetrically arranged on the front and rear sides of the crushing mechanism (3). The transmission components (21) can crush materials falling from the feeding mechanism (8) through the re-crushing mechanism (7) in cooperation with the main shaft (37). A dust removal mechanism (6) is provided on the bottom plate (9), and the dust removal mechanism (6) can suck dust generated by crushing inside the crushing frame (33) in cooperation with the driving mechanism (5); The hammer crushing assembly includes a hammer head (35), a plurality of shafts (38), a plurality of partition plates (34) fixed at equal distances on the outer wall of the main shaft (37), and a first impact plate (31) and a second impact plate (32) installed on the inner side of the crushing frame (33); the shaft (38) fixes the plurality of partition plates (34) in series; the hammer head (35) is rotatably connected to the shaft (38) located between two adjacent partition plates (34); and a discharge chute (36) is provided through the bottom of the crushing frame (33); The driving mechanism (5) comprises a motor (51), a first pulley (52), a transmission belt (53) and a second pulley (54); the motor (51) is mounted on a support bracket (4); the first pulley (52) is fixedly connected to the end of the output shaft of the motor (51); the main shaft (37) extends to the outside of the crushing frame (33) and passes through and is fixed to the inside of the second pulley (54); the transmission belt (53) is transmission-connected between the first pulley (52) and the second pulley (54); The re-crushing mechanism (7) includes a base (73) fixedly connected to the bottom plate (9), a movable seat (74) is provided on the base (73), baffles (79) are fixed on both sides of the top of the movable seat (74), a pressing slope (75) is provided on the top of the movable seat (74) between the two baffles (79), an arc block (72) is fixed at the intersection of the baffle (79) and the pressing slope (75), and a pressing slope (71) is provided between the two baffles (79) in a sliding sleeve. The re-crushing mechanism (7) further comprises two T-shaped slideways (76) opened inside the base (73), a T-shaped slide bar (77) is slidably sleeved inside the two T-shaped slideways (76), the top end of the T-shaped slide bar (77) is fixedly connected to the bottom of the movable seat (74), one end of the T-shaped slide bar (77) is fixedly connected to a return spring (78), and the other end of the return spring (78) is fixedly connected to the end of the T-shaped slideway (76); The transmission component (21) includes an H-shaped frame (214) fixedly connected to the outer wall of the crushing frame (33), a turntable (213) is provided inside the H-shaped frame (214), the main shaft (37) rotates through the H-shaped frame (214) and is fixedly connected to the turntable (213), a transmission frame (211) is provided on one side of the turntable (213), and vertical rods (212) are fixed at the upper and lower ends of the transmission frame (211), the vertical rods (212) extend into the interior of the H-shaped frame (214) and are slidably connected thereto, and the vertical rod (212) located on the lower side is fixedly connected to the pressing inclined plate (71); An adjustment groove (217) is provided on the outer wall of the rotary disc (213), two rows of bolt holes (218) are symmetrically provided on the adjustment groove (217), a fixed block (216) is slidably provided inside the adjustment groove (217), the fixed block (216) and the adjustment groove (217) are fixedly connected via fastening bolts (219) and the bolt holes (218), a shifting post (215) is fixed on the outer wall of the fixed block (216), and the shifting post (215) is slidably sleeved on the inner side of the transmission frame (211).

2. The impact hammer crusher with high efficiency crushing according to claim 1, characterized in that: The feeding mechanism (8) comprises a feeding frame (82) fixedly connected to the bottom of the crushing frame (33); a through opening (83) communicating with the interior of the crushing frame (33) is provided at the top of the feeding frame (82); a vibration plate (85) is rotatably connected to the inside of the feeding frame (82) via a rotating shaft (84); and an elastic rope (88) for suspending the vibration plate (85) is connected between the vibration plate (85) and the top of the feeding frame (82).

3. The impact hammer crusher with high efficiency crushing according to claim 2, characterized in that: A plurality of guide bars (87) are fixed on the top of the vibration plate (85), and the lower gap between two adjacent guide bars (87) is larger than the upper gap. A vibration motor (86) is fixedly installed on the bottom of the vibration plate (85), and a guide frame (81) is fixed between the feed frame (82) and the vibration plate (85).

4. The impact hammer crusher with high efficiency crushing according to claim 3, characterized in that: The dust removal mechanism (6) comprises a mounting plate (61) fixedly connected to the top of the base plate (9); an air induced draft hood (62) is fixed on the mounting plate (61); an impeller (67) is provided inside the air induced draft hood (62); a rotating rod (66) is fixed at the center of the first pulley (52); the rotating rod (66) rotates and extends into the air induced draft hood (62) and is fixedly connected to the impeller (67); an exhaust pipe (64) is fixedly connected to the side wall of the air induced draft hood (62); an air induced draft duct (63) is fixedly connected to the center of the air induced draft hood (62); and a suction pipe (65) is fixedly connected between the air induced draft duct (63) and the crushing frame (33).

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