Adjustable hammer stone crusher and adjusting method thereof

Abstract

The invention relates to the technical field of coke production, and discloses an adjustable hammer stone crusher which comprises a machine body, a driving shaft is rotatably connected to the inner wall of the machine body in a penetrating mode, and a plurality of fixing rods are fixedly connected to the side wall of the driving shaft; the adjusting method comprises the following steps that S1, coal is added into the machine body through the feeding frame, then the first motor is driven to rotate, the driving shaft is driven to rotate through the first wheel, the synchronous belt and the second wheel, the multiple crushing heads are driven to rotate through the multiple fixing rods, and the coal is crushed. In the crushing process, two first hydraulic oil cylinders are adjusted to stretch out and draw back to drive an impact plate to be close to or away from a crushing head, meanwhile, two second hydraulic oil cylinders are adjusted to stretch out and draw back to drive an arc-shaped plate and a crushing plate to be close to or away from the crushing head, the thickness specification of crushed coal can be accurately controlled, and the granularity requirements of different application scenes are met; the coke quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coke production, and in particular to an adjustable hammer stone crusher and an adjusting method thereof. BACKGROUND

[0002] Coke is a kind of solid fuel, which is obtained by dry distillation of coal at a high temperature of about 1000 DEG C. The main component is fixed carbon, followed by ash, and the content of volatile matter and sulfur is very small. It is silver gray with metallic luster, hard and porous. In the production process, in order to improve the quality of coke, coal needs to be put into a hammer stone crusher for crushing treatment.

[0003] At present, the hammer stone crusher mainly realizes the crushing effect under the action of the crushing head, the counterattack plate and the crushing plate when crushing coal. However, in the actual crushing process, due to the particle size and hardness of coal and the discharge particle size of the finished product, the crushing condition and the discharge condition in the hammer stone crusher need to be adjusted accordingly, so as to increase the quality of coke. However, the traditional hammer crusher adopts a structure of "fixed grate + manual adjustment gap", and the adjustment needs to stop, and the screw rod / hydraulic rod is manually operated. It cannot adjust the discharge particle size in real time according to the feed coal quality or the finished product demand, and cannot automatically adjust the discharge particle size according to the finished product demand. In the long-term non-adjustment, it will lead to unqualified finished product particle size, equipment blockage and increased energy consumption, and even cause shutdown failure. SUMMARY

[0004] The technical problem to be solved by the present application is that the prior art cannot adjust the discharge particle size in real time according to the feed coal quality or the finished product demand. Therefore, we propose an adjustable hammer stone crusher.

[0005] In order to achieve the above purpose, the following technical scheme is adopted in the present application: an adjustable hammer stone crusher, comprising a machine body, a driving shaft is rotatably connected through the inner wall of the machine body, a plurality of fixed rods are fixedly connected to the side wall of the driving shaft, and a crushing head is fixedly connected to the end of each fixed rod away from the driving shaft. The machine body is equipped with an adjustment mechanism, which includes an impact plate rotatably connected to the upper part of the inner wall of the machine body via a rotating shaft. Two first hydraulic cylinders corresponding to the impact plate are fixedly connected to the outer wall of the machine body. The output ends of the two first hydraulic cylinders are rotatably connected to the side wall of the impact plate away from the crushing head. An arc-shaped plate is rotatably connected to the lower part of the inner wall of the machine body via a rotating shaft. A crushing plate is fixedly connected to the inner side wall of the arc-shaped plate. Two second hydraulic cylinders corresponding to the crushing plate are fixedly connected to the outer wall of the machine body. The output ends of the two second hydraulic cylinders are rotatably connected to the outer side wall of the crushing plate. The impact plate and the crushing plate are arranged on the same side. A feed frame is fixedly connected through the inner top of the machine body away from the impact plate. A crossbar is rotatably connected to the upper end of the feed frame. A feed plate is fixedly connected to the side wall of the crossbar. A first lower grate plate is fixedly connected through the inner bottom of the machine body.

[0006] Preferably, a second lower grate plate is attached to the upper end of the first lower grate plate, and multiple corresponding discharge ports are opened on the side walls of the first and second lower grate plates. Two cylinders are fixedly connected to the side wall of the machine body, and the output ends of the two cylinders are fixedly connected to the side wall of the second lower grate plate.

[0007] Preferably, a vertical plate is fixedly connected to the upper end of the machine body, and a handle is fixedly connected to the side wall of the crossbar after passing through the side wall of the vertical plate. A nut is threadedly connected to the side wall of the crossbar located between the vertical plate and the handle.

[0008] Preferably, each of the multiple crushing heads has a strip-shaped cavity on its inner wall near both ends of the drive shaft, and a crushing block is slidably connected through the inner wall of each of the two strip-shaped cavities. The side wall of the crushing block is elastically connected to the inner wall of the strip-shaped cavity by multiple first springs.

[0009] Preferably, an oil outlet pipe is embedded and fixedly connected to the inner wall of the drive shaft, and a U-shaped pipe is fixedly connected between the inner walls of two adjacent strip-shaped cavities. The side wall of the oil outlet pipe is fixedly connected to multiple U-shaped pipes through multiple oil supply pipes. A rotary joint is fixedly connected to the side wall of the machine body through a bracket. One end of the oil outlet pipe is fixedly connected to one end of the rotary joint, and the other end of the rotary joint is fixedly connected to an oil inlet pipe.

[0010] Preferably, a first motor is fixedly connected to the side wall of the machine body away from the rotary joint via a bracket, a first wheel is fixedly connected to the side wall of the output shaft of the first motor, a second wheel is fixedly connected to the side wall of the drive shaft away from the rotary joint, and a synchronous belt connects the first wheel and the second wheel.

[0011] Preferably, the first lower grate plate is provided with two sets of unblocking mechanisms. The two sets of unblocking mechanisms include two horizontal plates. The upper ends of the two horizontal plates are fixedly connected to multiple unblocking plates corresponding to multiple discharge ports, which divide the area where the multiple discharge ports of the first lower grate plate are located equally. Multiple rectangular rods are slidably connected to the side walls of the two horizontal plates. The upper ends of the multiple rectangular rods are fixedly connected to the lower end of the first lower grate plate. The upper ends of the two unblocking plates are elastically connected to the lower end of the first lower grate plate through multiple second springs.

[0012] Preferably, two U-shaped frames are fixedly connected to the side wall of the machine body above the second lower grate. Slide grooves are opened through both sides of the two U-shaped frames. Slider blocks are slidably connected to the inner walls of the four slide grooves. A connecting rod is rotatably connected between the side walls of two adjacent sliders. A shovel plate is fixedly connected to the side wall of the connecting rod inside the U-shaped frame. The lower end of the shovel plate is in contact with the upper end of the second lower grate. A gear is fixedly connected to the side wall of the connecting rod outside the U-shaped frame. A toothed plate is fixedly connected to the upper side wall of the U-shaped frame away from the inner wall of the machine body. The gear meshes with the toothed plate during movement.

[0013] Preferably, a second motor is fixedly connected to the side wall of the machine body via a bracket. A rotating rod is fixedly connected to the output end of the second motor. Two cams, which correspond to the lower ends of the two horizontal plates, are fixedly connected to the side wall of the rotating rod. The two cams are staggered. A U-shaped rod is fixedly connected between the side walls of two adjacent sliders. The side wall of the U-shaped rod passes through the side wall of the U-shaped frame and the side wall of the machine body. The side wall of the rotating rod away from the two cams is provided with reciprocating threads. Both reciprocating thread side walls are threadedly connected with threaded plates. The side wall of the threaded plate is fixedly connected to its corresponding U-shaped rod side wall.

[0014] An adjustment method for an adjustable hammer crusher, comprising any of the adjustable hammer crushers described above, further comprising the following steps: S1. Coal is added into the machine body through the feed frame, and then the first motor is driven to rotate. The first wheel, the synchronous belt and the second wheel drive the drive shaft to rotate, and multiple fixed rods drive multiple crushing heads to rotate, thus crushing the coal. S2. During the crushing process, the extension and retraction of the two first hydraulic cylinders are adjusted to move the impact plate closer to or away from the crushing head, which can accurately control the coarse and fine specifications of the crushed coal, meet the particle size requirements of different application scenarios, and improve the quality of coke. S3. Adjusting the extension and retraction of the two second hydraulic cylinders can move the arc plate and crushing plate closer to or further away from the crushing head, which can precisely control the outflow specifications of the crushed coal, meet the particle size requirements of different application scenarios, improve coke quality, and further enhance coke quality. S4. Turning the handle will cause the feed plate to rotate via the crossbar, which can adjust the feed size of the feed frame and the amount of coal fed per unit time. S5. External hydraulic oil is squeezed into or extracted from the two strip cavities through the inlet pipe, rotary joint, outlet pipe, delivery pipe, and U-shaped pipe. The extension length of the two crushing blocks can be adjusted to efficiently crush coal of different sizes and hardness, thereby further improving the quality of coke.

[0015] The technical effects and advantages of this invention are as follows: During the crushing process, this invention adjusts the extension and retraction of two first hydraulic cylinders to move the impact plate closer to or away from the crushing head, thereby precisely controlling the coarseness and fineness of the crushed coal to meet the particle size requirements of different application scenarios and improve coke quality. Simultaneously, adjusting the extension and retraction of two second hydraulic cylinders moves the arc plate and crushing plate closer to or away from the crushing head, thereby precisely controlling the outflow specifications of the crushed coal to meet the particle size requirements of different application scenarios and improve coke quality, further enhancing coke quality.

[0016] This invention uses external hydraulic oil to squeeze into or extract from two strip cavities through an inlet pipe, rotary joint, outlet pipe, delivery pipe, and U-shaped pipe. The extension length of the two crushing blocks can be adjusted to efficiently crush coal of different sizes and hardness, thereby further improving the quality of coke.

[0017] In this invention, multiple unblocking plates intermittently unblock multiple discharge ports. Since the multiple unblocking plates equally divide the area where the multiple discharge ports of the first lower grate are located, the intermittent unblocking process will not affect the outflow of crushed coal. Instead, it unblocks the discharge ports to prevent material from adhering to them, which could cause the load on the first motor to spike and, in severe cases, lead to material blockage and shutdown. Furthermore, if the machine is forced to run after blockage, it could lead to serious malfunctions such as the breakage of the crushing head, requiring a shutdown to resolve the problem. Attached Figure Description

[0018] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the structure of an adjustable hammer crusher according to the present invention; Figure 2 for Figure 1 A schematic diagram of the vertical sectional structure; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 for Figure 1 A schematic diagram of the rear view structure; Figure 5 for Figure 1 Enlarged structural diagram at point B; Figure 6 for Figure 1 A top-view sectional structural diagram; Figure 7 for Figure 6 Enlarged structural diagram at point C; Figure 8 for Figure 1 Enlarged structural diagram at point D; Figure 9 for Figure 1 A structural diagram of the back side; Figure 10 for Figure 4 A schematic diagram of the vertical sectional structure; Figure 11 for Figure 1 Schematic diagram of the structure of the central dredging mechanism; Figure 12 for Figure 11 A schematic diagram of the structure viewed from below.

[0019] Legend: 1. Machine body; 2. Drive shaft; 3. Fixed rod; 4. Crushing head; 5. Impact plate; 6. First hydraulic cylinder; 7. Arc plate; 8. Crushing plate; 9. Second hydraulic cylinder; 10. Feed frame; 11. Horizontal bar; 12. Feed plate; 13. Vertical plate; 14. Handle; 15. Nut; 16. First lower grate; 17. Second lower grate; 18. Discharge port; 19. Cylinder; 20. Strip cavity; 21. Crushed block; 22. First spring; 23. Oil outlet pipe; 4. Oil delivery pipe; 25. U-shaped pipe; 26. Rotary joint; 27. Oil inlet pipe; 28. First motor; 29. ​​First wheel; 30. Second wheel; 31. Rectangular rod; 32. Horizontal plate; 33. Unblocking plate; 34. Second spring; 35. Second motor; 36. Rotating rod; 37. Cam; 38. U-shaped frame; 39. Slide groove; 40. Slider; 41. Connecting rod; 42. Shovel plate; 43. Gear; 44. Tooth plate; 45. Reciprocating thread; 46. Threaded plate; 47. U-shaped rod. Detailed Implementation

[0020] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0021] Reference Figure 1 - Figure 12As shown, the present invention provides a technical solution: an adjustable hammer crusher, including a body 1, a drive shaft 2 rotatably connected through the inner wall of the body 1, a plurality of fixed rods 3 fixedly connected to the side wall of the drive shaft 2, and a crushing head 4 fixedly connected to the end of each of the plurality of fixed rods 3 away from the drive shaft 2.

[0022] The machine body 1 is equipped with an adjustment mechanism, which includes an impact plate 5 rotatably connected to the upper inner wall of the machine body 1 via a rotating shaft. Two first hydraulic cylinders 6 corresponding to the impact plate 5 are fixedly connected to the outer wall of the machine body 1. The output ends of the two first hydraulic cylinders 6 are rotatably connected to the side wall of the impact plate 5 away from the crushing head 4. During the crushing process, the extension and retraction of the two first hydraulic cylinders 6 are adjusted to drive the impact plate 5 closer to or away from the crushing head 4, which can accurately control the coarse and fine specifications of the coal after crushing, meet the particle size requirements of different application scenarios, and improve the quality of coke.

[0023] An arc-shaped plate 7 is rotatably connected to the lower inner wall of the machine body 1 via a rotating shaft. A crushing plate 8 is fixedly connected to the inner side wall of the arc-shaped plate 7. Two second hydraulic cylinders 9, corresponding to the crushing plate 8, are fixedly connected to the outer side wall of the machine body 1. The output ends of the two second hydraulic cylinders 9 are rotatably connected to the outer side wall of the crushing plate 8. Adjusting the extension and retraction of the two second hydraulic cylinders 9 causes the arc-shaped plate 7 and the crushing plate 8 to move closer to or away from the crushing head 4. This allows for precise control of the outflow specifications of the crushed coal, meeting the particle size requirements of different application scenarios, improving coke quality, and further enhancing coke quality.

[0024] The impact plate 5 and the crushing plate 8 are set on the same side. The inner top of the machine body 1 away from the impact plate 5 is fixedly connected to the feed frame 10. The upper end of the feed frame 10 is rotatably connected to the crossbar 11. The side wall of the crossbar 11 is fixedly connected to the feed plate 12. The inner bottom of the machine body 1 is fixedly connected to the first lower grate plate 16.

[0025] A vertical plate 13 is fixedly connected to the upper end of the machine body 1. A handle 14 is fixedly connected to the side wall of the horizontal bar 11 after passing through the side wall of the vertical plate 13. A nut 15 is threadedly connected to the side wall of the horizontal bar 11 between the vertical plate 13 and the handle 14. By rotating the handle 14, the feed plate 12 is rotated through the horizontal bar 11, which can adjust the feed size of the feed frame 10 and the amount of coal fed per unit time.

[0026] The upper end of the first lower grate plate 16 is attached to the second lower grate plate 17. The side walls of the first lower grate plate 16 and the second lower grate plate 17 are provided with a plurality of corresponding discharge ports 18. Two cylinders 19 are fixedly connected to the side wall of the machine body 1. The output ends of the two cylinders 19 are fixedly connected to the side wall of the second lower grate plate 17. By adjusting the extension and retraction of the two cylinders 19, the second lower grate plate 17 is moved on the upper surface of the first lower grate plate 16, thereby adjusting the spacing between the plurality of corresponding discharge ports 18 between the first lower grate plate 16 and the second lower grate plate 17. Different discharge particle sizes can be automatically adjusted as needed, increasing the service life of the equipment.

[0027] Multiple crushing heads 4 have strip-shaped cavities 20 on their inner walls near both ends of the drive shaft 2. The inner walls of the two strip cavities 20 are sealed and slidably connected with crushing blocks 21. The side walls of the crushing blocks 21 are elastically connected to the inner walls of the strip cavities 20 by multiple first springs 22.

[0028] An oil outlet pipe 23 is embedded and fixedly connected to the inner wall of the drive shaft 2. A U-shaped pipe 25 is fixedly connected between the inner walls of two adjacent strip cavities 20. The side wall of the oil outlet pipe 23 is fixedly connected to multiple U-shaped pipes 24 and multiple oil supply pipes 24 respectively. A rotary joint 26 is fixedly connected to the side wall of the machine body 1 through a bracket. One end of the oil outlet pipe 23 is fixedly connected to one end of the rotary joint 26, and the other end of the rotary joint 26 is fixedly connected to an oil inlet pipe 27.

[0029] External hydraulic oil is squeezed into or extracted from the two strip cavities 20 through the inlet pipe 27, rotary joint 26, outlet pipe 23, oil delivery pipe 24, and U-shaped pipe 25, thereby increasing or decreasing the space within the two strip cavities 20. This allows adjustment of the extension length of the two crushing blocks 21, enabling efficient crushing of coal of different sizes and hardness, and further improving the quality of coke.

[0030] A first motor 28 is fixedly connected to the side wall of the machine body 1 away from the rotary joint 26 via a bracket. A first wheel 29 is fixedly connected to the side wall of the output shaft of the first motor 28. A second wheel 30 is fixedly connected to the side wall of the drive shaft 2 away from the rotary joint 26. A synchronous belt connects the first wheel 29 and the second wheel 30.

[0031] The first lower grate 16 is provided with two sets of unblocking mechanisms. The two sets of unblocking mechanisms include two horizontal plates 32. The upper ends of the two horizontal plates 32 are fixedly connected to multiple unblocking plates 33, which correspond one-to-one with multiple discharge ports 18. They divide the area where the multiple discharge ports 18 of the first lower grate 16 are located equally. Multiple rectangular rods 31 are slidably connected to the side walls of the two horizontal plates 32. The upper ends of the multiple rectangular rods 31 are fixedly connected to the lower end of the first lower grate 16. The upper ends of the two unblocking plates 33 are elastically connected to the lower end of the first lower grate 16 through multiple second springs 34.

[0032] A second motor 35 is fixedly connected to the side wall of the machine body 1 via a bracket. A rotating rod 36 is fixedly connected to the output end of the second motor 35. Two cams 37, which are in contact with the lower ends of the two horizontal plates 32 respectively, are fixedly connected to the side wall of the rotating rod 36. The two cams 37 are staggered.

[0033] When the coal is crushed and discharged from the multiple discharge ports 18 on the first lower grate 16 and the second lower grate 17, the second motor 35 is driven to rotate, which in turn drives the rotating rod 36 to rotate, and drives the two cams 37 to rotate. Since the two cams 37 are staggered, they can press against the lower ends of the two horizontal plates 32 respectively, causing the two horizontal plates 32 to move up and down alternately under the pressure of the two cams 37 and the elastic force of the multiple second springs 34. That is, when one horizontal plate 32 moves up, the other horizontal plate 32 moves up. The downward movement of the multiple unblocking plates 33 allows them to intermittently unblock the multiple discharge ports 18. Since the multiple unblocking plates 33 divide the area where the multiple discharge ports 18 of the first lower grate 16 are located equally, the intermittent unblocking process will not affect the outflow of crushed coal. Instead, it unblocks the discharge ports 18, preventing material from adhering to them and causing the load on the first motor 28 to spike. In severe cases, this could lead to material blockage and shutdown. Furthermore, if the machine is forced to run after blockage, it could cause serious malfunctions such as the breakage of the crushing head 4, requiring the machine to be shut down for troubleshooting.

[0034] It should be noted that the side wall of the unblocking plate 33 is in contact with the side wall of the discharge port 18 on the first lower grate 16 away from the cylinder 19. Therefore, when the second lower grate 17 moves, it will only adjust the size of the discharge port 18 on the first lower grate 16, and will not affect the normal passage of the unblocking plate 33 through the discharge port 18 on the first lower grate 16 and the second lower grate 17.

[0035] Two U-shaped frames 38 are fixedly connected to the side wall of the machine body 1 above the second lower grate plate 17. The two side walls of the two U-shaped frames 38 are provided with sliding grooves 39. The inner walls of the four sliding grooves 39 are slidably connected to sliders 40. The side walls of two adjacent sliders 40 are rotatably connected to a connecting rod 41. The side wall of the connecting rod 41 inside the U-shaped frame 38 is fixedly connected to a shovel plate 42. The lower end of the shovel plate 42 is in contact with the upper end of the second lower grate plate 17. The side wall of the connecting rod 41 outside the U-shaped frame 38 is fixedly connected to a gear 43. The upper side wall of the U-shaped frame 38 away from the inner wall of the machine body 1 is fixedly connected to a toothed plate 44. The gear 43 meshes with the toothed plate 44 during the movement.

[0036] A U-shaped rod 47 is fixedly connected between the side walls of two adjacent sliders 40. The side wall of the U-shaped rod 47 passes through the side wall of the U-shaped frame 38 and the side wall of the machine body 1. The side wall of the rotating rod 36 away from the two cams 37 is provided with reciprocating threads 45. The side walls of the two reciprocating threads 45 are threadedly connected with threaded plates 46. The side wall of the threaded plate 46 is fixedly connected to the side wall of its corresponding U-shaped rod 47.

[0037] During the rotation of the rotating rod 36, the two reciprocating threads 45 drive the two threaded plates 46 to move back and forth. The two U-shaped rods 47 drive the four sliders 40 to move back and forth on the inner walls of the four grooves 39. Taking a single U-shaped frame 38 as an example, when the two sliders 40 slide away from the inner wall of the machine body 1, the connecting rod 41 drives the shovel plate 42 to move, shoveling up the coal located above the second lower grate plate 17. Then, the gear 43 at the upper end of the connecting rod 41 meshes with the toothed plate 44. At this time, the connecting rod 41 drives the shovel plate 42 to rotate upward, throwing the shoveled coal upward, avoiding the accumulation of coal above the second lower grate plate 17, which occupies the effective crushing space inside the machine body 1. The new feed cannot fully contact the crushing head 4 and can only fall on the surface of the accumulation layer to be "crushed" rather than impact crushed, reducing the hourly processing capacity of the equipment. At the same time, the accumulated coal will buffer the impact force of the crushing head 4. Materials that could be crushed in one impact need to be impacted multiple times, further reducing the crushing efficiency.

[0038] An adjustment method for an adjustable hammer crusher, comprising any of the aforementioned adjustable hammer crushers, further comprising the following steps: S1. Coal is added into the machine body 1 through the feed frame 10, and then the first motor 28 is driven to rotate. The first wheel 29, the synchronous belt and the second wheel 30 drive the drive shaft 2 to rotate. Multiple fixed rods 3 drive multiple crushing heads 4 to rotate, thereby crushing the coal. S2. During the crushing process, the extension and retraction of the two first hydraulic cylinders 6 are adjusted to move the impact plate 5 closer to or further away from the crushing head 4, which can accurately control the coarse and fine specifications of the crushed coal, meet the particle size requirements of different application scenarios, and improve the quality of coke. S3. Adjust the extension and retraction of the two second hydraulic cylinders 9 to move the arc plate 7 and the crushing plate 8 closer to or away from the crushing head 4. This can precisely control the outflow specifications of the crushed coal, meet the particle size requirements of different application scenarios, improve the quality of coke, and further enhance the quality of coke. S4. Rotate handle 14, which drives feed plate 12 to rotate via crossbar 11, thereby adjusting the feed size of feed frame 10 and the amount of coal fed per unit time. S5. External hydraulic oil is squeezed into or extracted from the two strip cavities 20 through the oil inlet pipe 27, rotary joint 26, oil outlet pipe 23, oil delivery pipe 24 and U-shaped pipe 25. The extension length of the two crushing blocks 21 can be adjusted to efficiently crush coal of different sizes and hardness, thereby improving the quality of coke.

[0039] Working principle: During the coke production process, when crushing coal, coal is first added into the machine body 1 through the feed frame 10. Then, the first motor 28 is driven to rotate, which drives the drive shaft 2 to rotate through the first wheel 29, the synchronous belt, and the second wheel 30. Multiple fixed rods 3 drive multiple crushing heads 4 to rotate, crushing the coal. The crushed coal flows out through the discharge ports 18 on the first lower grate 16 and the second lower grate 17. At this time, by adjusting the extension and retraction of the two cylinders 19, the second lower grate 17 is moved on the upper surface of the first lower grate 16. The spacing between the multiple discharge ports 18 corresponding to the first lower grate 16 and the second lower grate 17 can be adjusted, which can automatically adjust the discharge particle size as needed, increasing the service life of the equipment. During the crushing process, adjusting the extension and retraction of the two first hydraulic cylinders 6 drives the impact plate 5 to move closer to or further away from the crushing head 4, which can precisely control the coarseness and fineness of the crushed coal, meet the particle size requirements of different application scenarios, and improve the quality of coke. Simultaneously adjusting the extension and retraction of the two second hydraulic cylinders 9, the arc plate 7 and the crushing plate 8 are moved closer to or further away from the crushing head 4, which can precisely control the outflow specifications of the crushed coal, meet the particle size requirements of different application scenarios, improve the quality of coke, and further enhance the quality of coke. Furthermore, by turning the handle 14, the feed plate 12 is rotated via the crossbar 11, which can adjust the feed size of the feed frame 10 and the amount of coal fed per unit time. Meanwhile, when efficiently crushing coal of different sizes and hardness, external hydraulic oil is squeezed into or extracted from the two strip cavities 20 through the oil inlet pipe 27, rotary joint 26, oil outlet pipe 23, oil delivery pipe 24 and U-shaped pipe 25. The extension length of the two crushing blocks 21 can be adjusted to efficiently crush coal of different sizes and hardness, thereby further improving the quality of coke. When the coal is crushed and discharged from the multiple discharge ports 18 on the first lower grate 16 and the second lower grate 17, the second motor 35 is driven to rotate, which in turn drives the rotating rod 36 to rotate, and drives the two cams 37 to rotate. Since the two cams 37 are staggered, they can press against the lower ends of the two horizontal plates 32 respectively, causing the two horizontal plates 32 to move up and down alternately under the pressure of the two cams 37 and the elastic force of the multiple second springs 34. That is, when one horizontal plate 32 moves up, the other horizontal plate 32 moves up. The downward movement of the multiple unblocking plates 33 allows multiple discharge ports 18 to be unblocked intermittently. Since the multiple unblocking plates 33 divide the area where the multiple discharge ports 18 of the first lower grate 16 are located equally, the intermittent unblocking process will not affect the outflow of crushed coal. Instead, it unblocks the discharge ports 18, preventing material from adhering to the discharge ports 18 and causing the load of the first motor 28 to surge. In severe cases, it may cause material blockage and shutdown. Furthermore, if the machine is forced to run after blockage, it may cause serious malfunctions such as the breakage of the crushing head 4, requiring the machine to be shut down for troubleshooting. During the rotation of the rotating rod 36, the two reciprocating threads 45 drive the two threaded plates 46 to move back and forth. The two U-shaped rods 47 drive the four sliders 40 to move back and forth on the inner walls of the four grooves 39. Taking a single U-shaped frame 38 as an example, when the two sliders 40 slide away from the inner wall of the machine body 1, the connecting rod 41 drives the shovel plate 42 to move, shoveling up the coal located above the second lower grate plate 17. Then, the gear 43 at the upper end of the connecting rod 41 meshes with the toothed plate 44. At this time, the connecting rod 41 drives the shovel plate 42 to rotate upward, throwing the shoveled coal upward, avoiding the accumulation of coal above the second lower grate plate 17, which occupies the effective crushing space inside the machine body 1. The new feed cannot fully contact the crushing head 4 and can only fall on the surface of the accumulation layer to be "crushed" rather than impact crushed, reducing the hourly processing capacity of the equipment. At the same time, the accumulated coal will buffer the impact force of the crushing head 4. Materials that could be crushed in one impact need to be impacted multiple times, further reducing the crushing efficiency.

[0040] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. An adjustable hammer-stone crusher, characterized in that, Including the body, the inner wall of the body is rotatably connected with a drive shaft throughout, the side wall of the drive shaft is fixedly connected with a plurality of fixed rods, and the end of the plurality of fixed rods away from the drive shaft is fixedly connected with a crushing head; The adjusting mechanism is arranged on the body, the adjusting mechanism comprises a back plate rotatably connected to the upper inner wall of the body through a rotating shaft, the outer side wall of the body is fixedly connected with two first hydraulic oil cylinders corresponding to the back plate, the output ends of the two first hydraulic oil cylinders are rotatably connected with the side wall of the back plate away from the crushing head, the lower inner wall of the body is rotatably connected with an arc-shaped plate through a rotating shaft, the inner side wall of the arc-shaped plate is fixedly connected with a crushing plate, the outer side wall of the body is fixedly connected with two second hydraulic oil cylinders corresponding to the crushing plate, the output ends of the two second hydraulic oil cylinders are rotatably connected with the outer side wall of the crushing plate, the back plate and the crushing plate are arranged on the same side, the inner top of the body away from the back plate is fixedly connected with an inlet frame throughout, the upper end of the inlet frame is rotatably connected with a horizontal rod, the side wall of the horizontal rod is fixedly connected with an inlet plate, and the inner bottom of the body is fixedly connected with a first lower grate plate throughout.

2. An adjustable hammer stone crusher as claimed in claim 1, wherein: The upper end of the first lower grate plate is attached with a second lower grate plate, a plurality of discharge ports are formed in the side walls of the first lower grate plate and the second lower grate plate, two cylinders are fixedly connected to the side wall of the body, and the output ends of the two cylinders are fixedly connected with the side wall of the second lower grate plate.

3. An adjustable hammer stone crusher as claimed in claim 1, wherein: The upper end of the body is fixedly connected with a vertical plate, the side wall of the horizontal rod is fixedly connected with a handle after penetrating the side wall of the vertical plate, and the side wall of the horizontal rod between the vertical plate and the handle is threadedly connected with a nut.

4. An adjustable hammer stone crusher as claimed in claim 1, wherein: The inner wall of the two ends of the plurality of crushing heads close to the drive shaft is provided with a strip-shaped cavity, and the inner walls of the two strip-shaped cavities are sealingly and slidingly connected with a crushing block.

5. An adjustable hammer stone crusher as claimed in claim 4, wherein: The inner wall of the drive shaft is embedded and fixedly connected with an oil outlet pipe, the inner walls between adjacent two strip-shaped cavities are fixedly connected with U-shaped pipes, the side walls of the oil outlet pipes are fixedly communicated with the plurality of U-shaped pipes through a plurality of oil conveying pipes, the side wall of the body is fixedly connected with a rotary joint through a support, one end of the oil outlet pipe is fixedly communicated with one end of the rotary joint, and the other end of the rotary joint is fixedly communicated with an oil inlet pipe.

6. An adjustable hammer stone crusher as claimed in claim 5 wherein: The side wall of the body away from the rotary joint is fixedly connected with a first motor through a support, the output shaft side wall of the first motor is fixedly connected with a first wheel, the side wall of the drive shaft away from the rotary joint is fixedly connected with a second wheel, and the first wheel and the second wheel are connected with a synchronous belt.

7. An adjustable hammer stone crusher as claimed in claim 2, wherein: Two groups of dredging mechanisms are arranged on the first lower grate plate, the two groups of dredging mechanisms comprise two horizontal plates, a plurality of dredging plates corresponding to the plurality of discharge ports are fixedly connected to the upper ends of the two horizontal plates, the plurality of discharge ports of the first lower grate plate are equally divided, the side walls of the two horizontal plates are slidingly connected with a plurality of rectangular rods, the upper ends of the plurality of rectangular rods are fixedly connected with the lower end of the first lower grate plate, and the upper ends of the two dredging plates are elastically connected with the lower end of the first lower grate plate through a plurality of second springs.

8. An adjustable hammer stone crusher as claimed in claim 7 wherein: The side wall of the machine body is fixedly connected with two U-shaped frames through the support, two sliding grooves are formed in the side walls of the two U-shaped frames, sliding blocks are slidably connected to the inner walls of the four sliding grooves, connecting rods are rotatably connected between the side walls of the adjacent two sliding blocks, a shovel plate is fixedly connected to the side wall of the connecting rod in the U-shaped frame, the lower end of the shovel plate is attached to the upper end of the second lower grate, and a gear is fixedly connected to the side wall of the U-shaped frame away from the inner wall of the machine body.

9. An adjustable hammer crusher as claimed in claim 8, characterized in that: The side wall of the machine body is fixedly connected with a second motor through the support, a rotating rod is fixedly connected to the output end of the second motor, two cams corresponding to the lower ends of the two horizontal plates are fixedly connected to the side wall of the rotating rod, the two cams are staggered, a U-shaped rod is fixedly connected between the side walls of the adjacent two sliding blocks, the side wall of the U-shaped rod penetrates the side walls of the U-shaped frame and the machine body, reciprocating threads are formed in the side walls of the rotating rod away from the two cams, threaded plates are threadedly connected to the side walls of the two reciprocating threads, and the side wall of the threaded plate is fixedly connected with the side wall of the corresponding U-shaped rod.

10. A method of adjusting an adjustable hammer stone crusher comprising an adjustable hammer stone crusher according to any one of claims 1-9, characterized in that: Further comprising the following steps: S1, coal is added into the machine body through the feeding frame, then the first motor is driven to rotate, the driving shaft is driven to rotate through the first wheel, the synchronous belt and the second wheel, and the plurality of fixed rods drive the plurality of crushing heads to rotate to crush the coal; S2, during the crushing process, the two first hydraulic cylinders are adjusted to extend and retract, the back plate is driven to approach or move away from the crushing head, the size of the crushed coal can be accurately controlled, the particle size requirements of different application scenarios are met, and the coke quality is improved; S3, the two second hydraulic cylinders are adjusted to extend and retract, the arc-shaped plate and the crushing plate are driven to approach or move away from the crushing head, the outflow specification of the crushed coal can be accurately controlled, the particle size requirements of different application scenarios are met, and the coke quality is improved, and the coke quality is improved again; S4, the handle is rotated, the feeding plate is driven to rotate through the horizontal rod, the feeding size of the feeding frame can be adjusted, and the coal feeding amount per unit time is adjusted; S5, the hydraulic oil in the external environment is extruded into or extracted from the two strip-shaped cavities through the oil inlet pipe, the rotary joint, the oil outlet pipe, the oil delivery pipe and the U-shaped pipe, the extension length of the two crushing blocks can be adjusted, different sizes and hardness of coal can be efficiently crushed, and the coke quality is improved again.

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