Raw coal hammer crusher

Abstract

The invention relates to the technical field of raw coal crushers, and provides a raw coal hammer crusher which comprises a bin body and a fixing seat, a bin door is arranged at the front end of the bin body, the side face of the bin body penetrates through and is fixedly connected with a discharging channel, a motor is fixedly installed at the top of the fixing seat, and the motor is fixedly connected with a rotating shaft through an output shaft of the motor; the springing screening mechanism is arranged, so that after raw coal blocks are fed into the bin body through the feeding channel, a motor is started to drive a rotating shaft to rotate, and the rotating shaft rotates to drive a crushing hammer to rotate through a connecting rod to crush the raw coal blocks; in addition, a screen is driven to move downwards repeatedly through cooperation of a rear rotating gear, a toothed bar, an air pressure bin and other assemblies, then a reset spring drives the screen to bounce upwards to be restored, the crushed raw coal blocks are screened through shaking, the screening efficiency is improved, and the raw coal blocks which are not crushed completely are thrown upwards to be crushed continuously due to inertia.

Description

Technical Field

[0001] The present invention relates to the technical field of raw coal crushers, and in particular to a raw coal hammer crusher. Background Art

[0002] Raw coal refers to the product produced by coal mines that has not been washed, screened or processed but only manually picked out gangue and debris, including natural coke and inferior coal, but excluding low calorific value coal (such as stone coal, peat, oil shale, etc.); raw coal can be divided into three categories according to its origin, namely humic coal, saprophytic coal and humic saprophytic coal; according to its degree of carbonization, it can be divided into peat, lignite, bituminous coal and anthracite, and raw coal needs to be crushed after production.

[0003] The patent document with publication number CN118320937B discloses a raw coal hammer crusher, including a base, a fixing frame is fixedly arranged on the top of the base, a shell is fixedly installed on the top of the fixing frame, and the shell is a cylindrical structure, rotating shafts are evenly arranged on the central axis of the shell, and the rotating shafts at both ends are respectively rotatably connected to the two ends of the shell, a connecting mechanism is arranged between each two groups of the rotating shafts, breaking rods are evenly arranged on the outer wall of the rotating shafts, and anti-blocking mechanisms are arranged at the ends of the breaking rods, a driving mechanism is arranged at the end of a group of rotating shafts on the top of the base, and a feed port is arranged at the top of the shell.

[0004] In the above application documents, by starting the motor, a group of rotating rods are driven to rotate under the action of the transmission shaft and the transmission belt. The rotation of one group of rotating rods drives the connecting shaft to rotate in the opposite direction through the gears, and the connecting shaft drives the adjacent group of rotating rods to rotate in the same direction through the connecting belt. If the crushing rods on the outer wall of one group of rotating rods do not hit the raw coal blocks during rotation, the crushing rods on the outer wall of the adjacent rotating rods will rotate in the opposite direction to hit and crush the raw coal blocks, and then screen them through the sieve holes. The raw coal blocks are easily accumulated on the sieve holes, resulting in poor screening efficiency, so it needs to be improved. Summary of the invention

[0005] The present invention provides a raw coal hammer crusher, which solves the problems raised in the above documents.

[0006] The technical solution of the present invention is as follows: A raw coal hammer crusher comprises a bin body and a fixed seat, a bin door is provided at the front end of the bin body, a material discharge channel is penetrated through and fixedly connected to the side of the bin body, a motor is fixedly installed on the top of the fixed seat, the motor is fixedly connected to a rotating shaft through its output shaft, an end of the rotating shaft away from the motor penetrates through and is rotatably connected to the side of the bin body, a connecting rod is fixedly connected to the surface of the rotating shaft, an end of the connecting rod away from the rotating shaft is fixedly connected to a crushing hammer, and a spring screening mechanism, a rebound reduction mechanism and a uniform material discharge mechanism are provided inside the bin body. The elastic screening mechanism includes an arc plate, a sliding rod, a hydraulic bin and a rotating gear. The arc plate is fixedly connected to the interior of the bin body. An opening is provided at the bottom of the arc plate. A screen is slidably connected to the interior of the opening. The bottom of the sliding rod is fixedly connected to the inner bottom of the bin body. A return spring is sleeved on the surface of the sliding rod. The screen is slidably connected to the sliding rod. The hydraulic bin passes through and is fixedly connected to the side of the bin body. A piston is slidably connected to a piston rod A at one end of the hydraulic bin, and a gear rod is fixedly connected to the top of the piston rod A. A piston is slidably connected to a piston rod B at the other end of the hydraulic bin, and the top of the piston rod B is fixedly connected to the bottom of the screen. The rotating gear is fixedly connected to the surface of the rotating shaft.

[0007] By providing an elastic screening mechanism, the raw coal blocks are put into the bin through the feeding channel, and the motor is turned on to drive the rotating shaft to rotate. The rotating shaft drives the breaker to rotate through the connecting rod to crush the raw coal blocks. The screen is driven to move downward repeatedly through the cooperation of the rear rotating gear, gear rod, air pressure bin and other components. Then the reset spring drives the screen to bounce upward and recover. The crushed raw coal blocks are screened by shaking, thereby improving the screening efficiency. The raw coal blocks that are not completely crushed will be thrown upward due to inertia to continue to be crushed.

[0008] The two ends of the return spring are in initial state in contact with the inner bottom of the bin body and the bottom of the screen. When the screen moves downward, it squeezes the return spring to compress it.

[0009] The teeth on the gear rod are matched with the teeth on the rotating gear, and the rotating gear is an incomplete gear. When the rotating gear rotates and its upper teeth are meshed with the teeth on the gear rod, the gear rod will be driven to move upward.

[0010] The rebound reduction mechanism comprises a connecting plate and a speed reduction block, one end of the connecting plate is fixedly connected to the bottom of the screen, the other end of the connecting plate is provided with a groove, a telescopic spring is arranged inside the groove, an arc block is slidably connected inside the groove through the telescopic spring, and the speed reduction block is fixedly connected to the inner wall of the bin body. By providing a rebound reduction mechanism, when the screen moves downward, the connecting plate will drive the arc block to move downward and contact the speed reduction block. At this time, the arc surface of the arc block is squeezed and compressed into the groove, and there will be no excessive squeezing and resistance with the speed reduction block. When the reset spring drives the screen to bounce upward and restore, the arc block will be squeezed and resisted with the speed reduction block, so that the screen will not bounce back and forth in place, thereby preventing the screen from bouncing back and forth and causing collision between the teeth of the gear rod and the rotating gear.

[0011] The depth of the groove is greater than the lateral length of the arc block, and the arc block can be completely retracted into the groove.

[0012] The arc surface of the arc block faces downward, and one end of the arc block away from the telescopic spring is close to the deceleration block. When the arc surface of the arc block is squeezed, it moves into the groove, and when the arc block moves downward, it contacts the deceleration block.

[0013] The deceleration block is semi-cylindrical as a whole, and the deceleration block and the arc block are both made of rubber. When the arc block and the deceleration block, both made of rubber, are squeezed, greater resistance will be generated.

[0014] The uniform feeding mechanism includes an eccentric disk, an air pressure bin and a connecting frame, the eccentric disk is fixedly connected to the surface of the rotating shaft, the air pressure bin penetrates and is fixedly connected to the side of the bin body, one end of the air pressure bin is provided with an air bag, the other end of the air pressure bin is slidably connected to a piston rod C by an internal piston, the inner side of the connecting frame is rotatably connected to a rotating rod, both ends of the rotating rod are provided with torsion springs, the surface of the rotating rod is fixedly connected with a feeding plate, and one end of the piston rod C away from the air pressure bin is hingedly connected to the bottom of the feeding plate. By providing a uniform feeding mechanism, when the motor is turned on to drive the rotating shaft to rotate, the feeding plate will be driven to swing up and down repeatedly through the cooperation of the eccentric disk, the air bag, the air pressure bin and other components, and the feeding plate is fed by repeatedly swinging up and down so that the raw coal blocks can be evenly dispersed to the screen, thereby improving the crushing and subsequent screening effects, thereby improving the overall efficiency.

[0015] The eccentric disk is close to the airbag, and the airbag is in an expanded state in the initial state. When the eccentric disk rotates with the shaft, it will repeatedly squeeze the airbag. The compressed airbag will enter the air pressure chamber to push the piston rod C to move upward.

[0016] The unloading plate is tilted in an initial state, and is close to the bottom of the unloading channel. When the raw coal blocks enter the bin through the unloading channel, they will first contact the unloading plate.

[0017] The working principle and beneficial effects of the present invention are: 1. The present invention is provided with a spring screening mechanism, so that after the raw coal blocks are put into the bin body through the feeding channel, the motor is turned on to drive the rotating shaft to rotate. When the rotating shaft rotates and drives the breaker hammer to rotate through the connecting rod to crush the raw coal blocks, the screen is driven to move downward repeatedly through the cooperation of the rear rotating gear, the gear rod, the air pressure bin and other components, and then the reset spring drives the screen to bounce upward to restore. The crushed raw coal blocks are screened by shaking, thereby improving the screening efficiency. The raw coal blocks that are not completely crushed will be thrown upward due to inertia to continue to be crushed.

[0018] 2. The present invention is provided with a rebound reduction mechanism, so that when the screen moves downward, the connecting plate drives the arc block to move downward and contact the deceleration block. At this time, the arc surface of the arc block is squeezed into the groove and will not produce too much extrusion and resistance with the deceleration block. When the reset spring drives the screen to bounce upward and restore, the arc block will be squeezed with the deceleration block to produce resistance, so that the screen will not bounce back and forth in place, preventing the screen from bouncing back and forth and causing collision between the teeth of the gear rod and the rotating gear.

[0019] 3. The present invention is provided with a uniform feeding mechanism, so that when the motor is turned on to drive the rotating shaft to rotate, the feeding plate will be driven to swing up and down repeatedly through the cooperation of the eccentric disk, air bag, air pressure chamber and other components. The feeding plate is repeatedly swung up and down to feed the raw coal blocks, so that the raw coal blocks can be evenly dispersed on the screen, thereby improving the crushing and subsequent screening effects, thereby improving the overall efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Figure 1 It is a three-dimensional front view of the overall structure of the present invention; Figure 2 It is a three-dimensional back view of the overall structure of the present invention; Figure 3 It is a three-dimensional cross-sectional view of the overall structure of the present invention; Figure 4 A three-dimensional schematic diagram of the structure of the elastic screening mechanism of the present invention; Figure 5 A three-dimensional schematic diagram of the structure of the springback mitigation mechanism of the present invention; Figure 6 For the present invention Figure 5 A magnified view of the structure at center A; Figure 7 It is a three-dimensional schematic diagram of the uniform feeding mechanism structure of the present invention; Figure 8 It is a three-dimensional cross-sectional view of the uniform feeding mechanism structure of the present invention.

[0022] In the figure: 1. bin body; 2. bin door; 3. unloading channel; 4. fixed seat; 5. motor; 6. rotating shaft; 7. connecting rod; 8. breaker; 9. elastic screening mechanism; 91. arc plate; 92. opening; 93. screen; 94. slide rod; 95. reset spring; 96. hydraulic bin; 97. piston rod A; 98. gear rod; 99. piston rod B; 910. rotating gear; 10. rebound reduction mechanism; 101. connecting plate; 102. groove; 103. telescopic spring; 104. arc block; 105. speed reduction block; 11. uniform unloading mechanism; 111. eccentric disk; 112. air pressure bin; 113. air bag; 114. piston rod C; 115. connecting frame; 116. rotating rod; 117. torsion spring; 118. unloading plate. DETAILED DESCRIPTION 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0023] Example 1 like Figure 1 to Figure 6The present embodiment proposes a raw coal hammer crusher, including a bin body 1 and a fixed seat 4, a bin door 2 is provided at the front end of the bin body 1, a material discharge channel 3 is penetrated and fixedly connected to the side of the bin body 1, a motor 5 is fixedly installed on the top of the fixed seat 4, the motor 5 is fixedly connected to a rotating shaft 6 through its output shaft, the end of the rotating shaft 6 away from the motor 5 penetrates and is rotatably connected to the side of the bin body 1, a connecting rod 7 is fixedly connected to the surface of the rotating shaft 6, and a crushing hammer 8 is fixedly connected to the end of the connecting rod 7 away from the rotating shaft 6, and a spring screening mechanism 9, a rebound reduction mechanism 10 and a uniform material discharge mechanism 11 are provided inside the bin body 1. The spring screening mechanism 9 includes an arc plate 91, a slide bar 94, a hydraulic bin 96 and a rotating gear 910. The arc plate 91 is fixedly connected to the interior of the bin body 1. An opening 92 is provided at the bottom of the arc plate 91. A screen 93 is slidably connected to the interior of the opening 92. The bottom of the slide bar 94 is fixedly connected to the inner bottom of the bin body 1. A return spring 95 is sleeved on the surface of the slide bar 94. The two ends of the return spring 95 are in conflict with the inner bottom of the bin body 1 and the bottom of the screen 93 in the initial state. When the screen 93 moves downward, it squeezes the return spring 95 to compress it, and the screen The net 93 is slidably connected with the slide rod 94, the hydraulic chamber 96 penetrates and is fixedly connected to the side of the chamber body 1, the internal piston at one end of the hydraulic chamber 96 is slidably connected with a piston rod A97, the top of the piston rod A97 is fixedly connected with a gear rod 98, the internal piston at the other end of the hydraulic chamber 96 is slidably connected with a piston rod B99, the top of the piston rod B99 is fixedly connected to the bottom of the screen 93, the rotating gear 910 is fixedly connected to the surface of the rotating shaft 6, the teeth on the gear rod 98 are matched with the teeth on the rotating gear 910, and the rotating gear 910 is an incomplete gear, and the rotating gear When 910 rotates and its upper teeth mesh with the teeth on the gear rod 98, the gear rod 98 will be driven to move upward, and the rebound reduction mechanism 10 includes a connecting plate 101 and a deceleration block 105. One end of the connecting plate 101 is fixedly connected to the bottom of the screen 93, and the other end of the connecting plate 101 is provided with a groove 102. A telescopic spring 103 is arranged inside the groove 102. An arc block 104 is slidably connected to the inside of the groove 102 through the telescopic spring 103. The depth of the groove 102 is greater than the horizontal length of the arc block 104. The arc block 104 can be completely retracted into the groove 1 02, the speed reduction block 105 is fixedly connected to the inner wall of the warehouse body 1, the arc surface of the arc block 104 is downward, and the end of the arc block 104 away from the telescopic spring 103 is close to the speed reduction block 105, and the arc surface of the arc block 104 will move into the groove 102 when squeezed, and will contact the speed reduction block 105 when the arc block 104 moves downward. The speed reduction block 105 is semi-cylindrical as a whole, and the materials of the speed reduction block 105 and the arc block 104 are both rubber materials. When the arc block 104 and the speed reduction block 105, which are both made of rubber, are squeezed, a large resistance will be generated.

[0024] In this embodiment, the raw coal block is put into the bin body 1 through the feeding channel 3, and the motor 5 is turned on. The motor 5 drives the rotating shaft 6 to rotate through its output shaft, and the rotating shaft 6 rotates to drive the connecting rod 7 to rotate. The connecting rod 7 rotates to drive the crushing hammer 8 to rotate to crush the raw coal block. The crushed raw coal block will fall onto the arc plate 91, and then fall to the bottom of the bin body 1 after being screened by the screen 93. The rotation of the rotating shaft 6 will also drive the rotating gear 910 to rotate. At the beginning, the rotating gear 910 rotates, and its upper teeth mesh with the teeth on the gear rod 98, which will drive the gear rod When the gear 98 moves upward, the gear rod 98 moves upward to drive the piston rod A97 upward. The upward movement of the piston rod A97 drives the piston rod B99 downward through the hydraulic pressure in the hydraulic chamber 96. The downward movement of the piston rod B99 drives the screen 93 downward. At this time, the return spring 95 is gradually squeezed. When the rotating gear 910 rotates to the toothless part and disengages from the gear rod 98, the return spring 95 rebounds and drives the screen 93 to bounce up and recover, thus forming a cycle. The screen 93 repeatedly moves downward and then bounces back to recover, forming a shaking The raw coal blocks are automatically screened to improve the screening efficiency and prevent the raw coal blocks from accumulating in the screen 93. The raw coal blocks that are not completely crushed will be thrown upward due to inertia and contact the crushing hammer 8 for crushing again to ensure that the raw coal blocks are completely crushed. When the screen 93 moves downward, it will also drive the connecting plate 101 to move downward. The connecting plate 101 moves downward and drives the arc block 104 to move downward. The arc block 104 moves downward and contacts the deceleration block 105. At this time, the arc surface of the arc block 104 is squeezed and shrinks into the groove 102 without contacting the deceleration block 105. Block 105 is squeezed too much and produces resistance. When the reset spring 95 rebounds and mobilizes the screen 93 to bounce up and recover, the arc block 104 moves upward and its straight surface contacts the deceleration block 105. At this time, the straight surface of the arc block 104 will be squeezed and deformed by the deceleration block 105. The squeezing of the arc block 104 and the deceleration block 105, both of which are made of rubber, will produce a large resistance to prevent the screen 93 from bouncing back and forth due to inertia when it bounces up and recovers, thereby preventing the gear rod 98 from moving back and forth and its upper teeth from colliding with the upper teeth of the rotating gear 910.

[0025] Example 2 like Figures 1 to 8Based on the same concept as the above-mentioned embodiment 1, a second embodiment is also proposed. The uniform feeding mechanism 11 includes an eccentric disk 111, a pneumatic chamber 112 and a connecting frame 115. The eccentric disk 111 is fixedly connected to the surface of the rotating shaft 6. The pneumatic chamber 112 penetrates and is fixedly connected to the side of the chamber body 1. An air bag 113 is arranged at one end of the pneumatic chamber 112. The piston at the other end of the pneumatic chamber 112 is slidably connected to a piston rod C114. The eccentric disk 111 is close to the air bag 113, and the air bag 113 is in an expanded state in the initial state. When the eccentric disk 111 rotates with the rotating shaft 6, it will repeatedly squeeze When the piston rod 114 is pushed to the air bag 113, the air bag 113 is squeezed and the air pressure inside it enters the air pressure bin 112, pushing the piston rod C114 to move upward. The inner side of the connecting frame 115 is rotatably connected to a rotating rod 116. Torsion springs 117 are provided at both ends of the rotating rod 116. The surface of the rotating rod 116 is fixedly connected to a discharge plate 118. The end of the piston rod C114 away from the air pressure bin 112 is hingedly connected to the bottom of the discharge plate 118. The discharge plate 118 is initially inclined, and the discharge plate 118 is close to the bottom of the discharge channel 3. When the raw coal block enters the bin body 1 through the discharge channel 3, it will first contact the discharge plate 118.

[0026] In this embodiment, when the rotating shaft 6 is turned on to drive the connecting rod 7 and the breaker 8 to rotate for crushing, the rotation of the rotating shaft 6 will also drive the eccentric disk 111 to rotate. The rotation of the eccentric disk 111 will repeatedly squeeze the airbag 113. The air pressure inside the airbag 113 will enter the air pressure bin 112 to drive the piston rod C114 to move upward. The upward movement of the piston rod C114 will drive the unloading plate 118 to rotate upward and become horizontal. When the eccentric disk 111 rotates away from the airbag 113, the airbag 113 rebounds and the air pressure returns to the airbag 113. At this time, the piston rod C114 moves downward and drives the unloading plate 118 to restore. The unloading plate 118 repeatedly swings up and down, so that the raw coal blocks enter the bin body 1 through the unloading channel 3 and can be evenly dispersed to the screen when passing through the unloading plate 118, thereby improving the crushing and subsequent screening effects, thereby improving the overall efficiency.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A raw coal hammer crusher, characterized in that: The invention comprises a bin body (1) and a fixed seat (4), wherein a bin door (2) is arranged at the front end of the bin body (1), a material discharge channel (3) is penetrated through and fixedly connected to the side of the bin body (1), a motor (5) is fixedly mounted on the top of the fixed seat (4), the motor (5) is fixedly connected to a rotating shaft (6) via its output shaft, the end of the rotating shaft (6) away from the motor (5) penetrates through and is rotatably connected to the side of the bin body (1), a connecting rod (7) is fixedly connected to the surface of the rotating shaft (6), the end of the connecting rod (7) away from the rotating shaft (6) is fixedly connected to a breaker (8), and a spring screening mechanism (9), a rebound reduction mechanism (10) and a uniform material discharge mechanism (11) are arranged inside the bin body (1). The elastic screening mechanism (9) comprises an arc plate (91), a slide rod (94), a hydraulic bin (96) and a rotating gear (910); the arc plate (91) is fixedly connected to the interior of the bin body (1); an opening (92) is provided at the bottom of the arc plate (91); a screen (93) is slidably connected to the interior of the opening (92); the bottom of the slide rod (94) is fixedly connected to the inner bottom of the bin body (1); a return spring (95) is sleeved on the surface of the slide rod (94); the screen (93) is slidably connected to the slide rod (94); The hydraulic chamber (96) is slidably connected to a rod (94), the hydraulic chamber (96) penetrates and is fixedly connected to the side of the chamber body (1), the internal piston at one end of the hydraulic chamber (96) is slidably connected to a piston rod A (97), the top of the piston rod A (97) is fixedly connected to a gear rod (98), the internal piston at the other end of the hydraulic chamber (96) is slidably connected to a piston rod B (99), the top of the piston rod B (99) is fixedly connected to the bottom of the screen (93), and the rotating gear (910) is fixedly connected to the surface of the rotating shaft (6).

2. A raw coal hammer crusher according to claim 1, characterized in that: In the initial state, both ends of the return spring (95) are in contact with the inner bottom of the bin body (1) and the bottom of the screen (93).

3. A raw coal hammer crusher according to claim 2, characterized in that: The teeth on the gear rod (98) are matched with the teeth on the rotating gear (910), and the rotating gear (910) is an incomplete gear.

4. A raw coal hammer crusher according to claim 3, characterized in that: The rebound reduction mechanism (10) comprises a connecting plate (101) and a speed reduction block (105); one end of the connecting plate (101) is fixedly connected to the bottom of the screen (93); the other end of the connecting plate (101) is provided with a groove (102); a telescopic spring (103) is arranged inside the groove (102); an arc block (104) is slidably connected inside the groove (102) via the telescopic spring (103); and the speed reduction block (105) is fixedly connected to the inner wall of the bin body (1).

5. A raw coal hammer crusher according to claim 4, characterized in that: The depth of the groove (102) is greater than the lateral length of the arc-shaped block (104).

6. A raw coal hammer crusher according to claim 5, characterized in that: The arc surface of the arc block (104) faces downward, and one end of the arc block (104) away from the telescopic spring (103) is close to the deceleration block (105).

7. A raw coal hammer crusher according to claim 6, characterized in that: The deceleration block (105) is semi-cylindrical in shape as a whole, and the deceleration block (105) and the arc block (104) are both made of rubber.

8. A raw coal hammer crusher according to claim 7, characterized in that: The uniform feeding mechanism (11) comprises an eccentric disk (111), an air pressure chamber (112) and a connecting frame (115); the eccentric disk (111) is fixedly connected to the surface of the rotating shaft (6); the air pressure chamber (112) penetrates and is fixedly connected to the side of the chamber body (1); an air bag (113) is provided at one end of the air pressure chamber (112); a piston rod C (114) is slidably connected to an internal piston at the other end of the air pressure chamber (112); a rotating rod (116) is rotatably connected to the inner side of the connecting frame (115); torsion springs (117) are provided at both ends of the rotating rod (116); a feeding plate (118) is fixedly connected to the surface of the rotating rod (116); and an end of the piston rod C (114) away from the air pressure chamber (112) is hingedly connected to the bottom of the feeding plate (118).

9. A raw coal hammer crusher according to claim 8, characterized in that: The eccentric disk (111) is close to the airbag (113), and the airbag (113) is in an expanded state in an initial state.

10. A raw coal hammer crusher according to claim 9, characterized in that: In an initial state, the unloading plate (118) is arranged to be inclined, and the unloading plate (118) is close to the bottom of the unloading channel (3).

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