Hammer crusher for ash powder processing

Abstract

The invention belongs to the technical field of ash processing, and particularly relates to a hammer crusher for ash processing, the hammer crusher comprises an ash screening mechanism, a switching mechanism and a raw material discharging mechanism, the ash screening mechanism comprises a screening box body, two rotating plates and a screening cylinder, the screening box body is divided into three cavities by the two rotating plates, and the screening cylinder is arranged in the screening box body; screening cylinders are arranged on the two sides of each rotating plate. The switching mechanism comprises a second motor, the second motor is connected with a switching gear through a transmission assembly, and the switching gear is fixedly arranged in the middles of the top ends of the two rotating plates. The two raw material discharging mechanisms are located above the two material returning cavities correspondingly. The crushing hammer roller is driven to rotate, meanwhile, the two screening barrels located in the screening cavity are driven to rotate at the same time for screening, when too many raw materials are intercepted, the screening barrels are switched within extremely short time through the switching mechanism, the raw materials which are not crushed can be rapidly discharged by pressing down the conical bottom plate, and the screening efficiency is improved. And the working efficiency of the hammer crusher is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of ash powder processing, and particularly relates to a hammer crusher for ash powder processing. Background Art

[0002] After the existing hammer crusher for ash powder processing crushes limestone raw materials, it is often necessary to judge the discharge particle size through a sieve hole. The raw materials that do not reach the discharge particle size need to be crushed again. In this process, it is usually necessary to manually remove the sieve cylinder and then remove the raw materials for secondary crushing, or remove the uncrushed raw materials by operating such as tilting the sieve cylinder. In any case, this process requires the hammer crusher to stop working for a long time, affecting the production efficiency. Moreover, each time the raw materials for secondary crushing are taken out, it takes time and effort for workers to use tools, not only with a large labor intensity, but also further extending the downtime, thereby affecting the efficiency of ash powder processing. Summary of the Invention

[0003] The purpose of the present invention is to provide a hammer crusher for ash powder processing. Based on the crushing principle of the original hammer crusher, an ash powder screening mechanism, a raw material discharging mechanism and a switching mechanism are added, and the quick discharge of raw materials that do not reach the discharge degree is realized under the mutual cooperation of the above mechanisms, so as to improve the production efficiency of the hammer crusher.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: A hammer crusher for ash powder processing, including a crushing box body, an inlet is arranged at the top of the crushing box body, two crushing hammer rollers are arranged inside the crushing box body, and the two crushing hammer rollers are connected by belt drive. Two crushing discharge hoppers are arranged at the bottom of the crushing box body, and the two crushing discharge hoppers correspond to the two crushing hammer rollers one by one. The hammer crusher further includes an ash powder screening mechanism, a raw material discharging mechanism and a switching mechanism, wherein: The ash powder screening mechanism includes a screening box body, the screening box body is arranged below the two crushing discharge hoppers, two rotating plates are rotatably arranged inside the screening box body, and the two rotating plates divide the overall internal space of the screening box body into three cavities in a side-by-side structure. Among them, the cavity located in the middle is configured as a screening cavity, and the cavities located on both sides of the screening cavity are configured as discharge cavities. In addition, both sides of each rotating plate are rotatably connected with a screening cylinder through a connecting component. A set of screening tooth rings are arranged on the circumferential side wall of each screening cylinder. In addition, a plurality of sieve holes are evenly opened on the circumferential side wall of each screening cylinder. On this basis, the ash powder screening mechanism further includes a first power component arranged in the middle of the screening cavity. The first power component includes a set of screening gears, and through the meshing of the screening gears and the screening tooth rings, the screening cylinder rotates in the screening cavity on the basis of the power provided by the first power component; The raw material discharging mechanism includes two groups, which are respectively located above the two discharging cavities. Each raw material discharging mechanism includes a lifting rod located inside the screening cylinder and a pressing component located above the lifting rod. Among them, the bottom end of the lifting rod is connected with a conical bottom plate, which is located at the bottom end inside the screening cylinder and is slidably connected with the inner wall of the screening cylinder. The inside of the lifting rod is hollow, and a group of long strip-shaped lifting grooves are oppositely arranged on the side wall of the lifting rod. In addition, the raw material discharging mechanism further includes a T-shaped support rod, which is composed of a horizontally arranged part and a vertically arranged part integrally. The horizontally arranged part is movably arranged in a group of lifting grooves, and both ends of the horizontally arranged part extend out of the lifting grooves and are fixedly connected with the inner wall of the screening cylinder. The vertically arranged part is movably arranged inside the lifting rod, and a support spring is sleeved on the outer wall of the vertically arranged part. The support spring corresponds to the position of the lifting groove; The switching mechanism includes a second motor for providing switching power. The second motor is connected with two switching gears through a transmission component. Among them, each switching gear is fixedly arranged in the middle of the top ends of the two rotating plates. The switching power output by the second motor is transmitted to the two switching gears through the transmission component, thereby realizing the rotation of the two rotating plates.

[0005] Preferably, the ash powder screening mechanism further includes a connecting frame, which is fixedly installed at the bottom end of the crushing box body and is located below the two crushing discharge hoppers. The screening box body is fixedly installed at the bottom end of the connecting frame. On this basis, the width of the rotating plate is equal to the internal width of the screening box body; In addition, the ash powder screening mechanism further includes an ash powder discharge hopper arranged at the bottom end of the screening cavity and two raw material discharge hoppers respectively arranged at the bottom ends of the two discharging cavities.

[0006] Preferably, in the ash powder screening mechanism, the connecting component includes two connecting units. Each connecting unit includes two connecting plates. Each connecting plate is composed of a connecting part and a rotating part integrally. The rotating part is rotatably arranged on the circumferential side wall of the screening cylinder, and the screening tooth ring is located between the two rotating parts in each connecting unit. The connecting part is used to connect the rotating part and the rotating plate.

[0007] Preferably, in the ash powder screening mechanism, the first power assembly further includes a rotating shaft, both ends of the rotating shaft are rotatably installed between the top and bottom inside the screening box body, and both of the screening gears are fixedly sleeved on the rotating shaft. In addition, a first bevel gear is also fixedly sleeved on the rotating shaft, the first bevel gear is meshed and connected with a second bevel gear, the second bevel gear is fixedly sleeved on a transmission rod, the transmission rod penetrates through the side wall of the connection frame, and one end of the transmission rod extending outside the connection frame is fixedly connected with a pulley, and the pulley is connected with the rotating shaft of the crushing hammer roller through a first belt.

[0008] Preferably, the switching mechanism further includes connection boxes and closing plates. There are two connection boxes, which are respectively covered outside the two switching gears. The closing plates are arranged on the rotating plates. On any rotating plate, the closing plates are located on both sides of the connection boxes, and the closing plates and the connection boxes jointly fill the gap between the top of the rotating plate and the bottom of the connection frame.

[0009] Preferably, in the switching mechanism, the second motor is located on one outer wall of the screening box body. The transmission assembly includes switching racks, a translation plate, a translation screw rod, a fixed signal block and a movable signal block. Among them, there are two switching racks which are arranged in parallel. The two switching racks are respectively movably installed inside the two connection boxes. The switching racks are meshed and connected with the switching gears. Both ends of the translation plate are respectively fixedly installed at one ends of the two switching racks outside the screening box body. The translation screw rod is arranged in parallel with the switching racks, and one end of the translation screw rod is fixedly connected with the output shaft of the second motor. The other end of the translation screw rod is threadedly connected with the middle part of the translation plate. The fixed signal block is fixedly installed on one side of the screening box body close to the translation plate. The movable signal block is fixedly installed on the translation plate, and the position of the movable signal block corresponds to that of the fixed signal block.

[0010] Preferably, the raw material discharging mechanism further includes dust-proof soft covers. There are two dust-proof soft covers which are respectively arranged in a group of lifting grooves. In addition, the raw material discharging mechanism further includes a movable signal ring and a fixed signal ring. The movable signal ring is fixedly installed at the bottom end of the conical bottom plate, and the fixed signal ring is fixedly installed at the bottom end of the screening cylinder.

[0011] Preferably, in each of the raw material discharging mechanisms, the downward pressing assembly includes a connecting cylinder fixedly arranged inside the crushing discharge hopper. The bottom of the connecting cylinder is open, and a lifting screw cylinder is movably arranged inside the connecting cylinder. The top end of the lifting screw cylinder is always located inside the connecting cylinder, and a limiting block that fits the inner wall of the connecting cylinder is arranged at the top end of the lifting screw cylinder. The bottom end of the lifting screw cylinder extends out of the connecting cylinder. In addition, threads are arranged on the outer wall of the lifting screw cylinder. The lifting screw cylinder is a hollow tubular structure, and the inner diameter of the lifting screw cylinder is larger than the diameter of the vertical part. On this basis, a lifting screw sleeve is rotatably arranged at the bottom end of the connecting cylinder, and the lifting screw sleeve is also rotatably connected to the upper surface of the connecting frame. In addition, the lifting screw sleeve is threadedly sleeved on the outer wall of the lifting screw cylinder.

[0012] Preferably, the hammer crusher further includes a screen hole anti-blocking mechanism. The screen hole anti-blocking mechanism includes two groups and is respectively located inside the two material discharging cavities. Each screen hole anti-blocking mechanism includes a connecting frame, and the connecting frame is fixedly arranged on the inner wall of the screening box. In addition, each screen hole anti-blocking mechanism further includes an anti-blocking roller, a top rod, a middle rotating shaft, a second belt, and a third belt. Among them, the anti-blocking roller is rotatably installed on the connecting frame. There are several top rods and they are evenly arranged on the circumferential outer wall of the anti-blocking roller, and the top rod cooperates with the screen hole. The middle rotating shaft is rotatably installed on the outer wall of the connecting frame. The second belt is simultaneously sleeved on the middle rotating shaft and the lifting screw sleeve to realize the transmission connection between the middle rotating shaft and the lifting screw sleeve. The third belt is simultaneously sleeved on the middle rotating shaft and the anti-blocking roller to realize the transmission connection between the middle rotating shaft and the anti-blocking roller. On this basis, the minimum distance from the anti-blocking roller to the rotating plate is greater than the rotation radius of the rotating plate.

[0013] Preferably, the two groups of screen hole anti-blocking mechanisms are simultaneously powered by a second power assembly. The second power assembly includes a fourth belt and a first motor. Among them, the first motor is fixedly arranged at the top end of the middle rotating shaft in any one group of screen hole anti-blocking mechanisms. The fourth belt is simultaneously sleeved on the two middle rotating shafts in the two groups of screen hole anti-blocking mechanisms to realize the transmission connection between the two middle rotating shafts.

[0014] The beneficial effects of the present invention are as follows: While driving the crushing hammer roller to rotate, the hammer crusher provided by the present invention also drives two screening cylinders located inside the screening cavity to rotate simultaneously for screening, so that the raw materials crushed in the crushing box are screened immediately after falling, and the uncrushed raw materials are left in the screening cylinder. When too much intercepted raw material accumulates, the switching mechanism is used to quickly swap the positions of the screening cylinder originally located in the screening cavity and the screening cylinder located in the discharge cavity within a very short time. On the basis that the raw material discharging mechanism presses down the conical bottom plate in the screening cylinder located in the discharge cavity to enable the uncrushed raw materials to be quickly discharged, the screening cylinder located in the screening cavity has already started screening the raw materials simultaneously. This not only reduces the labor intensity of the operators but also improves the working efficiency of the hammer crusher and effectively improves the processing efficiency of the ash powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the internal structure of the crushing box in the present invention; Figure 3 is a schematic diagram of the internal structure of the connecting frame in the present invention; Figure 4 is a schematic diagram of the internal structure of the screening box in the present invention; Figure 5 is a schematic diagram of the internal structure of the screening cylinder in the present invention; Figure 6 is a schematic diagram of the switching mechanism in the present invention; Figure 7 is a sectional structure schematic diagram of the lifting rod and the conical bottom plate in the present invention; Figure 8 is a connection schematic diagram of the anti-blocking roller and the screening cylinder in the present invention; Figure 9 is a schematic diagram of the internal structure of the connecting cylinder in the present invention; In the figure: crushing box body 1; feed inlet 2; crushing hammer roller 3; crushing discharge hopper 4; ash powder screening mechanism 5, connecting frame 501, screening box body 502, rotating plate 503, screening cylinder 504, screening tooth ring 505, ash powder discharge hopper 506, raw material discharge hopper 507; raw material discharge mechanism 6, T-shaped support rod 601, lifting rod 602, conical bottom plate 603, lifting groove 604, horizontal part 605, vertical part 606, support spring 607, dust-proof soft cover 608, movable signal ring 609, fixed signal ring 610; sieve hole anti-blocking mechanism 7, connecting frame 701, anti-blocking roller 702, ejector rod 703, middle rotating shaft 704, second belt 705, third belt 706; switching mechanism 8, switching gear 801, second motor 802, connecting box 803, closing plate 804; screening cavity 9; material withdrawal cavity 10; connecting component 11, connecting plate 1101, connecting part 1102, rotating part 1103; first power component 12, screening gear 1201, rotating shaft 1202, first bevel gear 1203, second bevel gear 1204, transmission rod 1205, pulley 1206, first belt 1207; transmission component 13, switching rack 1301, translation plate 1302, translation screw rod 1303, fixed signal block 1304, movable signal block 1305; pressing-down component 14, connecting cylinder 1401, lifting screw barrel 1402, limiting block 1403, lifting screw sleeve 1404; second power component 15, fourth belt 1501, first motor 1502. Detailed implementation manner

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] In the present technical solution, as Figure 1-2 shown, a hammer crusher for ash powder processing includes a crushing box body 1. A feed inlet 2 is fixedly installed at the top end of the crushing box body 1. Two crushing hammer rolls 3 are arranged inside the crushing box body 1, and the two crushing hammer rolls 3 are connected by belt drive. Two crushing discharge hoppers 4 are fixedly installed at the bottom end of the crushing box body 1, and the two crushing discharge hoppers 4 correspond to the two crushing hammer rolls 3 one by one.

[0020] It should be noted that the crushing box body 1 and the crushing hammer rolls 3 are used by bringing in the prior art. The driving process of the crushing hammer rolls 3 and the process of the crushing hammer rolls 3 realizing the crushing of raw materials are common structures and common methods in the prior art. Specifically in this application, the raw materials enter the crushing box body 1 through the feed inlet 2, and are crushed under the action of the two crushing hammer rolls 3, and the crushed products respectively fall into the two crushing discharge hoppers 4.

[0021] In the present technical solution, as Figure 1-4 shown, the hammer crusher further includes an ash powder screening mechanism 5, a raw material discharging mechanism 6 and a switching mechanism 8.

[0022] Specifically, as Figure 2-4 shown, the ash powder screening mechanism 5 includes a screening box body 502. The screening box body 502 is arranged below the two crushing discharge hoppers 4. Two rotating plates 503 are rotatably arranged inside the screening box body 502, and the two rotating plates 503 divide the overall internal space of the screening box body 502 into three cavities in a side-by-side structure. Among them, the cavity located in the middle is configured as a screening cavity 9, and the cavities located on both sides of the screening cavity 9 are configured as discharging cavities 10.

[0023] The ash powder screening mechanism 5 further includes a connecting frame 501, which is fixedly installed at the bottom end of the crushing box body 1 and is located below the two crushing discharge hoppers 4. The screening box body 502 is fixedly installed at the bottom end of the connecting frame 501. On this basis, the width of the rotating plate 503 is equal to the internal width of the screening box body 502. In addition, the ash powder screening mechanism 5 further includes an ash powder discharge hopper 506 provided at the bottom end of the screening cavity 9 and two raw material discharge hoppers 507 respectively provided at the bottom ends of the two material return cavities 10.

[0024] In addition, both sides of each rotating plate 503 are rotatably connected with a screening cylinder 504 through a connecting component 11. A set of screening tooth rings 505 are provided on the circumferential side wall of each screening cylinder 504. A plurality of screening holes are evenly opened on the circumferential side wall of each screening cylinder 504. On this basis, the ash powder screening mechanism 5 further includes a first power component 12 provided in the middle of the screening cavity 9. The first power component 12 includes a set of screening gears 1201.

[0025] Based on the above structure, as Figure 4-5 shown, the connecting component 11 includes two connecting units. Each connecting unit includes two connecting plates 1101. Among them, each connecting plate 1101 is composed of a connecting part 1102 and a rotating part 1103 which are integrally arranged. The rotating part 1103 is rotatably arranged on the circumferential side wall of the screening cylinder 504, and the screening tooth ring 505 is located between the two rotating parts 1103 in each connecting unit; the connecting part 1102 is used to connect the rotating part 1103 and the rotating plate 503.

[0026] Based on the above embodiment, the crushed products falling into the two crushing discharge hoppers 4 fall into the two screening cylinders 504 in the screening cavity 9 under the guiding action of the crushing discharge hoppers 4. Through the meshing of the screening gears 1201 and the screening tooth rings 505, the screening cylinders 504 rotate in the screening cavity 9 on the basis of the power provided by the first power component 12, so as to realize the screening of the crushed products in the screening cavity 9 by the screening cylinders 504. The ash powder reaching the discharge particle size is screened out of the screening cylinder 504 and discharged and collected by the ash powder discharge hopper 506, and the raw materials that do not reach the discharge particle size are intercepted in the screening cylinder 504.

[0027] The rotational power of the screening gear 1201 is provided by the first power component 12, as Figure 2-4As shown in the figure, the first power assembly 12 further includes a rotating shaft 1202. Both ends of the rotating shaft 1202 are rotatably installed between the top and bottom inside the screening box body 502. Both screening gears 1201 are fixedly sleeved on the rotating shaft 1202. In addition, a first bevel gear 1203 is also fixedly sleeved on the rotating shaft 1202. The first bevel gear 1203 is meshed with a second bevel gear 1204. The second bevel gear 1204 is fixedly sleeved on the transmission rod 1205. The transmission rod 1205 penetrates through the side wall of the connection frame 501, and one end of the transmission rod 1205 extending outside the connection frame 501 is fixedly connected with a pulley 1206. The pulley 1206 is connected to the rotating shaft of the crushing hammer roller 3 through a first belt 1207.

[0028] Based on the above embodiment, on the basis of the normal operation of the crushing hammer roller 3, the transmission rod 1205 is driven to rotate through the first belt 1207. When the transmission rod 1205 rotates, the first bevel gear 1203 is driven to rotate through the second bevel gear 1204, so that the rotating shaft 1202 rotates simultaneously with the first bevel gear 1203. When the rotating shaft 1202 rotates, the screening gear 1201 is driven to rotate, and then the two screening cylinders 504 on both sides of the rotating shaft 1202 are driven to rotate simultaneously through the screening tooth ring 505.

[0029] In this technical solution, the embodiment further provides a switching mechanism 8 for switching between the screening cylinder 504 containing the raw materials that have not reached the discharge particle size and the unused screening cylinder 504, as Figure 3-6 shown. The switching mechanism 8 includes a second motor 802 for providing switching power. The second motor 802 is connected with two switching gears 801 through a transmission assembly 13. Among them, each switching gear 801 is fixedly arranged at the middle part of the top of the two rotating plates 503. In this embodiment, the switching power output by the second motor 802 is transmitted to the two switching gears 801 through the transmission assembly 13, so as to realize the rotation of the two rotating plates 503. When the two rotating plates 503 rotate, the screening cylinders 504 on both sides of the rotating plates 503 will be replaced in position.

[0030] Specifically, as Figure 6 shown, the switching mechanism 8 further includes a connection box 803 and a closing plate 804. There are two connection boxes 803, which are respectively covered outside the two switching gears 801. The closing plate 804 is arranged on the rotating plate 503. On any one of the rotating plates 503, the closing plate 804 is located on both sides of the connection box 803, and the closing plate 804 and the connection box 803 jointly fill the gap between the top of the rotating plate 503 and the bottom of the connection frame 501 to prevent the ash powder obtained by screening in the screening cavity 9 from escaping.

[0031] In addition, in the switching mechanism 8, the second motor 802 is located on an outer wall side of the screening box body 502. The transmission assembly 13 includes a switching rack 1301, a translation plate 1302, a translation screw rod 1303, a fixed signal block 1304, and a movable signal block 1305. Among them, there are two switching racks 1301 which are arranged in parallel to each other. The two switching racks 1301 are respectively movably installed inside two connecting boxes 803. The switching rack 1301 is meshed and connected with the switching gear 801. Two ends of the translation plate 1302 are respectively fixedly installed at one end of the two switching racks 1301 located outside the screening box body 502. The translation screw rod 1303 is arranged in parallel with the switching rack 1301, and one end of the translation screw rod 1303 is fixedly connected with the output shaft of the second motor 802. The other end of the translation screw rod 1303 is threadedly connected with the middle part of the translation plate 1302. The fixed signal block 1304 is fixedly installed on a side of the screening box body 502 close to the translation plate 1302. The movable signal block 1305 is fixedly installed on the translation plate 1302, and the position of the movable signal block 1305 corresponds to that of the fixed signal block 1304.

[0032] Based on the above embodiment, start the second motor 802 to drive the translation screw rod 1303 to rotate. When the translation screw rod 1303 rotates, it drives the translation plate 1302 to move towards the direction close to the screening box body 502. At this time, the translation plate 1302 drives the two switching racks 1301 to move. The switching gear 801 is driven to rotate half a circle through the switching rack 1301, so that the rotating plate 503 rotates half a circle simultaneously following the switching gear 801. At this time, the screening cylinder 504 containing the intercepted raw materials and the empty screening cylinder 504 switch positions.

[0033] In this technical solution, this embodiment also provides a raw material discharging mechanism 6 for discharging the raw materials inside the screening cylinder 504, as Figure 4-5 、 Figure 7 shown. The raw material discharging mechanism 6 includes two groups and is respectively located above two material discharging cavities 10. Each raw material discharging mechanism 6 includes a lifting rod 602 located inside the screening cylinder 504 and a pressing-down assembly 14 located above the lifting rod 602. Among them, the bottom end of the lifting rod 602 is connected with a conical bottom plate 603. The conical bottom plate 603 is located at the inner bottom end of the screening cylinder 504 and is slidably connected with the inner wall of the screening cylinder 504. The inside of the lifting rod 602 is hollow, and a group of long strip-shaped lifting grooves 604 are oppositely opened on the side wall of the lifting rod 602.

[0034] In addition, the raw material discharging mechanism 6 further includes a T-shaped support rod 601, which is composed of a horizontal portion 605 and a vertical portion 606 integrally provided. The horizontal portion 605 is movably arranged in a group of lifting grooves 604, and both ends of the horizontal portion 605 extend out of the lifting grooves 604 and are fixedly connected to the inner wall of the screening cylinder 504. The vertical portion 606 is movably arranged inside the lifting rod 602, and a support spring 607 is sleeved on the outer wall of the vertical portion 606. The support spring 607 corresponds to the position of the lifting groove 604. On this basis, the raw material discharging mechanism 6 further includes a dust-proof soft cover 608. There are two dust-proof soft covers 608, which are respectively arranged in a group of lifting grooves 604 to prevent ash and powder from entering the lifting grooves 604 and causing jamming of the sliding operation of the vertical portion 606 and the lifting rod 602. In addition, the raw material discharging mechanism 6 further includes a movable signal ring 609 and a fixed signal ring 610. The movable signal ring 609 is fixedly installed at the bottom end of the conical bottom plate 603, and the fixed signal ring 610 is fixedly installed at the bottom end of the screening cylinder 504.

[0035] Thus, on the basis that the T-shaped support rod 601 is fixed to the inner wall of the screening cylinder 504, the lifting rod 602 together with the conical bottom plate 603 can separate the conical bottom plate 603 from the screening cylinder 504 on the premise of compressing the support spring 607, so that the bottom end of the screening cylinder 504 is opened.

[0036] The power for the downward movement of the lifting rod 602 is provided by the downward pressing assembly 14. As Figure 3 , Figure 8-9 shown, the downward pressing assembly 14 includes a connecting cylinder 1401 fixedly arranged inside the crushing discharge hopper 4. The bottom of the connecting cylinder 1401 is open, and a lifting threaded cylinder 1402 is movably arranged inside the connecting cylinder 1401. The top end of the lifting threaded cylinder 1402 is always located inside the connecting cylinder 1401, and a limiting block 1403 that fits the inner wall of the connecting cylinder 1401 is provided at the top end of the lifting threaded cylinder 1402. The bottom end of the lifting threaded cylinder 1402 extends out of the connecting cylinder 1401. In addition, threads are provided on the outer wall of the lifting threaded cylinder 1402. The lifting threaded cylinder 1402 is a hollow tubular structure, and the inner diameter of the lifting threaded cylinder 1402 is larger than the diameter of the vertical portion 606. On this basis, a lifting screw sleeve 1404 is rotatably arranged at the bottom end of the connecting cylinder 1401, and the lifting screw sleeve 1404 is also rotatably connected to the upper surface of the connecting frame 501. In addition, the lifting screw sleeve 1404 is threadedly sleeved on the outer wall of the lifting threaded cylinder 1402.

[0037] Up to this point, when the lifting screw sleeve 1404 rotates, it will cause the lifting screw barrel 1402 to move downward from the connecting barrel 1401, so that the bottom end of the lifting screw barrel 1402 presses against the top end of the lifting rod 602, causing the lifting rod 602 to drive the conical bottom plate 603 to move downward. When the conical bottom plate 603 moves downward, the bottom end of the screening barrel 504 is gradually opened, so that the raw materials accumulated on the conical bottom plate 603 slide down from the conical bottom plate 603. The power source for the rotation of the lifting screw sleeve 1404 will be presented later.

[0038] In this technical solution, a screen hole anti-blocking mechanism 7 for preventing the screen holes on the screening barrel 504 from being blocked is also provided. As Figure 3-4 , Figure 8 shown, the screen hole anti-blocking mechanism 7 includes two groups and is respectively located inside the two discharging cavities 10. Each screen hole anti-blocking mechanism 7 includes a connecting frame 701, and the connecting frame 701 is fixedly arranged on the inner wall of the screening box body 502. In addition, each screen hole anti-blocking mechanism 7 further includes an anti-blocking roller 702, a top rod 703, a middle rotating shaft 704, a second belt 705 and a third belt 706. Among them, the anti-blocking roller 702 is rotatably installed on the connecting frame 701. There are several top rods 703 and they are evenly arranged on the circumferential outer wall of the anti-blocking roller 702. The top rod 703 cooperates with the screen holes. The middle rotating shaft 704 is rotatably installed on the outer wall of the connecting frame 501. The second belt 705 is sleeved on the middle rotating shaft 704 and the lifting screw sleeve 1404 at the same time to realize the transmission connection between the middle rotating shaft 704 and the lifting screw sleeve 1404. The third belt 706 is sleeved on the middle rotating shaft 704 and the anti-blocking roller 702 at the same time to realize the transmission connection between the middle rotating shaft 704 and the anti-blocking roller 702. On this basis, the minimum distance from the anti-blocking roller 702 to the rotating plate 503 is greater than the rotation radius of the rotating plate 503.

[0039] Based on the above embodiments, by driving the anti-blocking roller 702 to drive the top rod 703 to rotate, the raw materials blocking the screen holes on the side wall of the screening barrel 504 are pushed open by the top rod 703, so that the screening barrel 504 performs anti-blocking treatment while discharging the raw materials.

[0040] Specifically, the two groups of screen hole anti-blocking mechanisms 7 are simultaneously powered by the second power assembly 15. The second power assembly 15 includes a fourth belt 1501 and a first motor 1502. Among them, the first motor 1502 is fixedly arranged at the top end of the middle rotating shaft 704 in any one group of screen hole anti-blocking mechanisms 7. The fourth belt 1501 is sleeved on the two middle rotating shafts 704 in the two groups of screen hole anti-blocking mechanisms 7 at the same time to realize the transmission connection between the two middle rotating shafts 704.

[0041] Based on the above embodiments, on the basis that the first motor 1502 drives the middle rotating shaft 704 below it to rotate, the fourth belt 1501 can drive the two middle rotating shafts 704 to rotate simultaneously. At this time, the third belt 706 drives the anti-blocking roller 702 to rotate, so that the ejector rod 703 is inserted into the sieve holes on the screening cylinder 504. At the same time, the second belt 705 drives the lifting screw sleeve 1404 to rotate, so that the pressing component 14 starts to work.

[0042] Specifically: When the present invention is in use, the crushing hammer roller 3 is driven to rotate by an externally connected motor. When the crushing hammer roller 3 rotates, the driving rod 1205 is driven to rotate by the first belt 1207. When the driving rod 1205 rotates, the first bevel gear 1203 is driven to rotate by the second bevel gear 1204, so that the rotating shaft 1202 rotates simultaneously with the first bevel gear 1203. When the rotating shaft 1202 rotates, the screening gear 1201 is driven to rotate, and then the two screening cylinders 504 on both sides of the rotating shaft 1202 are driven to rotate simultaneously by the screening gear ring 505.

[0043] The raw materials for ash powder processing are added into the crushing box body 1 through the feeding port 2. The raw materials are crushed into ash powder by the crushing hammer roller 3. The ash powder enters the two rotating screening cylinders 504 through the two crushing discharge hoppers 4. The ash powder is screened by the rapidly rotating screening cylinders 504, so that the raw materials with insufficient crushing degree that fall simultaneously with the ash powder remain in the screening cylinders 504.

[0044] The lifting rod 602 located in the screening cylinder 504 is supported by the support spring 607, so that the movable signal ring 609 at the bottom end of the conical bottom plate 603 is located above the fixed signal ring 610 at the bottom end of the screening cylinder 504. When the raw materials remaining in the screening cylinder 504 are too much, the conical bottom plate 603 is driven to descend, so that the movable signal ring 609 moves to the position of the fixed signal ring 610. The fixed signal ring 610 is triggered by the movable signal ring 609, so that the fixed signal ring 610 emits a signal. At this time, the crushing hammer roller 3 is controlled to stop moving, and the raw material addition is stopped. Then, the second motor 802 is started. The second motor 802 drives the translation threaded rod 1303 to rotate. When the translation threaded rod 1303 rotates, the translation plate 1302 is driven to move in the direction close to the screening box body 502. At this time, the translation plate 1302 drives the two switching racks 1301 to move. The switching gear 801 is driven to rotate half a turn by the switching racks 1301, so that the rotating plate 503 rotates half a turn simultaneously with the switching gear 801. At this time, the screening cylinder 504 containing the intercepted raw materials is switched with the empty screening cylinder 504. Then, the crushing hammer roller 3 is driven to rotate again, and the raw materials are continuously added. The empty screening cylinder 504 is used for screening again, so that the hammer crusher can continue the raw material crushing operation after pausing for a very short time.

[0045] In the above process, when the translation plate 1302 drives the movable signal block 1305 to move simultaneously, when the movable signal block 1305 contacts the fixed signal block 1304, the screening cylinder 504 filled with raw materials and the empty screening cylinder 504 complete the switching. And at this time, the fixed signal block 1304 emits a signal to control the start of the first motor 1502. The first motor 1502 drives the middle rotating shaft 704 below it to rotate, and drives two middle rotating shafts 704 to rotate simultaneously through the fourth belt 1501. At this time, the third belt 706 drives the anti-blocking roller 702 to rotate, so that the ejector rod 703 is inserted into the screen holes on the screening cylinder 504 and drives the screening cylinder 504 to rotate. Meanwhile, the second belt 705 drives the lifting screw sleeve 1404 to rotate, and drives the lifting threaded cylinder 1402 to move downward from the connecting cylinder 1401 through the lifting screw sleeve 1404, so that the bottom end of the lifting threaded cylinder 1402 presses the top end of the lifting rod 602, causing the lifting rod 602 to drive the conical bottom plate 603 to move downward. When the conical bottom plate 603 moves downward, the bottom end of the screening cylinder 504 is gradually opened, so that the raw materials accumulated on the conical bottom plate 603 slide down from the conical bottom plate 603 and are then discharged out of the crusher through the raw material discharge hopper 507. The ash powder screened by the screening cylinder 504 is discharged through the ash powder discharge hopper 506.

[0046] It should be noted that the functions of the movable signal ring 609 and the fixed signal ring 610, and the movable signal block 1305 and the fixed signal block 1304 are equivalent to proximity switches. They are brought into use in the prior art. In this application, only the working process of generating signals when they approach each other is brought into use. In addition, when the movable signal block 1305 contacts the fixed signal block 1304, the fixed signal block 1304 emits signal data, and the signal data is continuously emitted during the contact, but only the first segment of signal data at the moment of just contact is valid, that is, a trigger signal is generated during the contact to control the start of the driving first motor 1502.

[0047] After the raw materials in the screening cylinder 504 are discharged, the first motor 1502 is reversely driven to drive the lifting threaded cylinder 1402 to rise, and the conical bottom plate 603 is driven to reset under the elastic force of the support spring 607. At this time, after the device emits a signal through the fixed signal ring 610, the second motor 802 is reversely rotated, that is, on the premise of switching the rack 1301 and the switching gear 801, the switching mechanism 8 runs reversely, and the screening cylinder 504 filled with raw materials and the empty screening cylinder 504 are switched again, repeating the above working steps to realize the long-term operation of the whole device and improve the production efficiency.

[0048] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A hammer crusher for ash powder processing, comprising a crushing box body, a feeding port is arranged at the top end of the crushing box body, two crushing hammer rollers are arranged inside the crushing box body, and the two crushing hammer rollers are connected by belt drive, two crushing discharge hoppers are arranged at the bottom end of the crushing box body, and the two crushing discharge hoppers correspond to the two crushing hammer rollers one by one, characterized in that, The hammer crusher further includes a ash powder screening mechanism, a switching mechanism and a raw material discharging mechanism, wherein: The ash powder screening mechanism includes a screening box body, the screening box body is arranged below the two crushing discharge hoppers, two rotating plates are rotatably arranged inside the screening box body, and the two rotating plates divide the overall internal space of the screening box body into three cavities in a side-by-side structure. Among them, the cavity located in the middle is configured as a screening cavity, and the cavities located on both sides of the screening cavity are configured as material discharging cavities. In addition, both sides of each rotating plate are rotatably connected with a screening cylinder through a connecting component. A set of screening tooth rings are arranged on the circumferential side wall of each screening cylinder. In addition, a plurality of screening holes are evenly formed on the circumferential side wall of each screening cylinder. On this basis, the ash powder screening mechanism further includes a first power component arranged in the middle of the screening cavity. The first power component includes a set of screening gears, and through the meshing of the screening gears and the screening tooth rings, the screening cylinder rotates in the screening cavity on the basis of the power provided by the first power component; The switching mechanism includes a second motor for providing switching power. The second motor is connected with two switching gears through a transmission component. Among them, each switching gear is fixedly arranged in the middle of the top ends of the two rotating plates. The switching power output by the second motor is transmitted to the two switching gears through the transmission component, so as to realize the rotation of the two rotating plates; The raw material discharging mechanism includes two groups, and is respectively located above the two material discharging cavities. Each raw material discharging mechanism includes a lifting rod inside the screening cylinder and a pressing component above the lifting rod. Among them, the bottom end of the lifting rod is connected with a conical bottom plate. The conical bottom plate is located at the bottom end inside the screening cylinder and is slidably connected with the inner wall of the screening cylinder. The inside of the lifting rod is hollow, and a set of long strip-shaped lifting grooves are oppositely formed on the side wall of the lifting rod. In addition, the raw material discharging mechanism further includes a T-shaped support rod. The T-shaped support rod is composed of a horizontally arranged part and a vertically arranged part which are integrally arranged. The horizontally arranged part is movably arranged in a set of lifting grooves, and both ends of the horizontally arranged part extend out of the lifting grooves and are fixedly connected with the inner wall of the screening cylinder. The vertically arranged part is movably arranged inside the lifting rod, and a support spring is sleeved on the outer wall of the vertically arranged part. The support spring corresponds to the position of the lifting groove.

2. The hammer crusher for ash powder processing according to claim 1, characterized in that: The ash powder screening mechanism further includes a connecting frame. The connecting frame is fixedly installed at the bottom end of the crushing box body and is located below the two crushing discharge hoppers. The screening box body is fixedly installed at the bottom end of the connecting frame. On this basis, the width of the rotating plate is equal to the internal width of the screening box body; In addition, the ash powder screening mechanism further includes an ash powder discharge hopper arranged at the bottom end of the screening cavity and two raw material discharge hoppers respectively arranged at the bottom ends of the two material discharging cavities.

3. The hammer crusher for ash powder processing according to claim 2, characterized in that: In the ash powder screening mechanism, the connection assembly includes two connection units. Each connection unit includes two connection plates. Each of the connection plates is composed of a connection part and a rotating part integrally arranged. The rotating part is rotatably arranged on the circumferential side wall of the screening cylinder, and the screening tooth ring is located between the two rotating parts in each connection unit. The connection part is used to connect the rotating part and the rotating plate.

4. The hammer crusher for ash powder processing according to claim 3, characterized in that: In the ash powder screening mechanism, the first power assembly further includes a rotating shaft. The two ends of the rotating shaft are respectively rotatably installed between the top end and the bottom end inside the screening box body. The two screening gears are both fixedly sleeved on the rotating shaft. In addition, a first bevel gear is also fixedly sleeved on the rotating shaft. The first bevel gear is meshed with a second bevel gear. The second bevel gear is fixedly sleeved on the transmission rod. The transmission rod penetrates through the side wall of the connection frame, and one end of the transmission rod extending outside the connection frame is fixedly connected with a pulley. The pulley is connected with the rotating shaft of the crushing hammer roller through a first belt.

5. A hammer crusher for ash powder processing according to claim 4, characterized in that: The switching mechanism further includes a connection box and a closing plate. There are two connection boxes, which are respectively covered outside the two switching gears. The closing plate is arranged on the rotating plate. On any rotating plate, the closing plate is located on both sides of the connection box, and the closing plate and the connection box together fill the gap between the top end of the rotating plate and the bottom end of the connection frame.

6. The hammer crusher for ash powder processing according to claim 5, wherein: In the switching mechanism, the second motor is located on one outer wall of the screening box body. The transmission assembly includes a switching rack, a translation plate, a translation screw rod, a fixed signal block and a movable signal block. Among them, there are two switching racks which are arranged in parallel with each other. The two switching racks are respectively movably installed inside the two connection boxes. The switching rack is meshed with the switching gear. The two ends of the translation plate are respectively fixedly installed at one ends of the two switching racks outside the screening box body. The translation screw rod is arranged in parallel with the switching rack. One end of the translation screw rod is fixedly connected with the output shaft of the second motor. The other end of the translation screw rod is threadedly connected with the middle part of the translation plate. The fixed signal block is fixedly installed on one side of the screening box body close to the translation plate. The movable signal block is fixedly installed on the translation plate, and the position of the movable signal block corresponds to that of the fixed signal block.

7. A hammer crusher for grey powder processing according to claim 6, characterized in that: The raw material discharging mechanism further includes two dust-proof soft covers which are respectively arranged in a group of lifting grooves. In addition, the raw material discharging mechanism further includes a movable signal ring and a fixed signal ring. The movable signal ring is fixedly installed at the bottom end of the conical bottom plate, and the fixed signal ring is fixedly installed at the bottom end of the screening cylinder.

8. A hammer crusher for ash powder processing according to claim 7, characterized in that: In each of the raw material discharging mechanisms, the pressing-down assembly includes a connecting cylinder fixedly arranged inside the crushing discharge hopper. The bottom of the connecting cylinder is open, and a lifting screw cylinder is movably arranged inside the connecting cylinder. The top end of the lifting screw cylinder is always located inside the connecting cylinder, and a limiting block that fits with the inner wall of the connecting cylinder is provided at the top end of the lifting screw cylinder. The bottom end of the lifting screw cylinder extends out of the connecting cylinder. In addition, threads are provided on the outer wall of the lifting screw cylinder. The lifting screw cylinder is a hollow tubular structure, and the inner diameter of the lifting screw cylinder is larger than the diameter of the vertical part. On this basis, a lifting screw sleeve is rotatably arranged at the bottom end of the connecting cylinder, and the lifting screw sleeve is also rotatably connected to the upper surface of the connecting frame. In addition, the lifting screw sleeve is threadedly sleeved on the outer wall of the lifting screw cylinder.

9. The hammer crusher for ash powder processing according to claim 8, characterized in that: The hammer crusher further includes a screen hole anti-blocking mechanism. The screen hole anti-blocking mechanism includes two groups and is respectively located inside the two discharging cavities. Each screen hole anti-blocking mechanism includes a connecting frame, and the connecting frame is fixedly arranged on the inner wall of the screening box body. In addition, each screen hole anti-blocking mechanism further includes an anti-blocking roller, a top rod, a middle rotating shaft, a second belt and a third belt. Among them, the anti-blocking roller is rotatably installed on the connecting frame. There are several top rods and they are evenly arranged on the circumferential outer wall of the anti-blocking roller, and the top rod is matched with the screen hole. The middle rotating shaft is rotatably installed on the outer wall of the connecting frame. The second belt is simultaneously sleeved on the middle rotating shaft and the lifting screw sleeve to realize the transmission connection between the middle rotating shaft and the lifting screw sleeve. The third belt is simultaneously sleeved on the middle rotating shaft and the anti-blocking roller to realize the transmission connection between the middle rotating shaft and the anti-blocking roller. On this basis, the minimum distance from the anti-blocking roller to the rotating plate is greater than the rotation radius of the rotating plate.

10. A hammer crusher for ash powder processing according to claim 9, characterized in that: The two groups of screen hole anti-blocking mechanisms are simultaneously powered by a second power assembly. The second power assembly includes a fourth belt and a first motor. Among them, the first motor is fixedly arranged at the top end of the middle rotating shaft in any one group of screen hole anti-blocking mechanisms. The fourth belt is simultaneously sleeved on the two middle rotating shafts in the two groups of screen hole anti-blocking mechanisms to realize the transmission connection between the two middle rotating shafts.

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