A production line for crushing solidified fly ash blocks

Abstract

This invention relates to the field of waste incineration machinery and equipment technology, specifically disclosing a chelated fly ash solidified block crushing production line. To achieve the process requirement of crushing from one cubic meter to two to three cubic millimeters, a two-stage crushing scheme is adopted, using a jaw static pressure coarse crusher for large-block coarse crushing and a twin-shaft hammer crusher for small-block fine crushing. This achieves sustainable and stable production. Furthermore, based on the unique physical characteristics of chelated fly ash, extensive specialized adjustments have been made to both the jaw static pressure coarse crusher and the twin-shaft hammer crusher. This significantly reduces material debris splashing and leakage while meeting crushing requirements, ensuring the occupational health and safety of operators. The system features low operating noise, high integration, small footprint, and minimal impact on the surrounding environment.

Description

Technical Field

[0001] This invention relates to the field of waste incineration machinery and equipment technology, and in particular to a chelated fly ash solidified block crushing production line. Background Technology

[0002] Fly ash collected from waste incineration contains harmful substances such as heavy metals and dioxins. It is classified as strictly controlled hazardous waste and currently, the vast majority undergoes chelation stabilization treatment with chelating agents. Only after passing inspection can it be disposed of in dedicated landfills. In the waste incineration industry, fly ash that fails random inspections after chelation solidification is increasingly required to undergo secondary chelation treatment. After chelation, fly ash is typically packed into ton bags and transported to dedicated ash silos for storage and solidification. The solidified fly ash usually forms a monolithic ash block of about one cubic meter. Secondary chelation requires first pulverizing the solidified ash block into smaller particles to meet process requirements.

[0003] The physical properties of chelated and solidified fly ash are quite unique. After storage and solidification, the slurry will harden and solidify into ash blocks. After a long period of dehydration, the fly ash blocks will exhibit a certain degree of brittle fracture when subjected to compression or impact. However, this does not mean that the solidified fly ash has an extremely low moisture content. On the contrary, the moisture in the solidified fly ash is stored in the fly ash molecules in the form of a coating. When the solidified fly ash is subjected to extreme compression, high-speed stirring and impact, which can produce behavior similar to cell wall breaking, the moisture coated in the fly ash will be released again. This will destroy the brittleness of the ash blocks and may even cause the ash blocks to re-form into wet mud lumps, making the ash blocks uncompressible.

[0004] Due to the large scale of the crushing process (approximately one cubic meter to two to three cubic millimeters) and the unique physical properties of chelated fly ash, there is currently no equipment that can fully handle the crushing of solidified chelated fly ash blocks. Even the existing equipment that is partially applicable generates significant noise and vibration, affecting surrounding facilities and production personnel. Furthermore, the structural characteristics of the ash blocks cause water to be released during production, damaging the brittleness of the material and resulting in a lack of sustainable and stable production capabilities. Summary of the Invention

[0005] The purpose of this invention is to propose a crushing production line for chelated fly ash solidified blocks. To meet the process requirements of crushing from one cubic meter to two to three cubic millimeters, a two-stage crushing scheme is adopted, using a jaw static pressure coarse crusher for large-block coarse crushing and a twin-shaft hammer crusher for small-block fine crushing. This achieves sustainable and stable production. Furthermore, based on the unique physical characteristics of chelated fly ash, extensive specialized adjustments have been made to both the jaw static pressure coarse crusher and the twin-shaft hammer crusher. This greatly reduces material debris splashing and leakage while meeting crushing requirements, ensuring the occupational health and safety of operators. The production line also features low operating noise, high integration, small footprint, and minimal impact on the surrounding environment.

[0006] To achieve this objective, the present invention adopts the following technical solution.

[0007] A chelated fly ash solidified block crushing production line includes a unpacking mechanism, an elevator, a spiral conveyor belt, a belt conveyor belt, and also a jaw static pressure coarse crusher and a twin-shaft hammer crusher.

[0008] The jaw static pressure coarse crusher includes: a dustproof frame, two V-shaped opposing jaw plates, a hydraulic cylinder assembly, and a guide support assembly.

[0009] The dustproof frame is a box-type structure welded from steel plates, with the top and bottom surfaces open and the other four sides closed.

[0010] The two V-shaped opposing jaw plates are arranged inside the dustproof frame. Five large through holes and flange bolt holes are opened on the side of the dustproof frame. Four of the large through holes and flange bolt holes are symmetrically opened at the four corners of the side and serve as guide support through holes. One of the large through holes and flange bolt holes is opened in the middle of the side and serves as a hydraulic cylinder through hole.

[0011] There are two sets of hydraulic cylinder assemblies, each corresponding to one of the two jaw plates. The core components of the hydraulic cylinder assembly are the cylinder piston rod and the hydraulic cylinder. The cylinder piston rod is connected to the jaw plate by passing vertically through the hydraulic cylinder through hole from the outside. The hydraulic cylinder is installed on the side plate using the flange bolt thread hole of the hydraulic cylinder through hole and matches the corresponding cylinder piston rod.

[0012] There are two sets of guide support assemblies, each corresponding to one of the two jaw plates. The core component of the guide support assembly is a linear guide post, which is connected to the jaw plate by passing vertically through the guide support penetration hole from the outside.

[0013] The bottom surface of the dustproof frame is also equipped with a jaw plate guide rail, and steel guide wheels are provided on both sides of the bottom of the jaw plate.

[0014] The dual-shaft hammer crusher includes: a double-cylinder main body and a rotary crushing system.

[0015] The two cylinders of the double-cylinder main body are connected on the side and are composed of two cylinders and end plates on both sides of the cylinders. The enclosed space formed by these two cylinders serves as the crushing chamber.

[0016] Both cylinders are equipped with a power shaft at their central axis.

[0017] The rotary crushing system consists of a hammer turntable, hammer shaft, hammer spacer, and irregularly shaped hammers.

[0018] The hammer disc has a central opening, the size of which matches the outer diameter of the power shaft. Each set of the power shaft has three hammer discs inserted into it. The hammer discs are evenly distributed and installed on the power shaft as a set of hammer discs. Each hammer disc has several hammer shaft holes equidistantly opened on its outer edge. The hammer shaft holes of the three hammer discs in each set of hammer discs correspond to each other. The outer diameter of the hammer shaft matches the hammer shaft hole. The hammer shaft is inserted into the corresponding hammer shaft hole of each set of hammer discs and installed and fixed, so that the hammer shafts are parallel to each other and to the power shaft.

[0019] The irregular hammer blade is a long strip-shaped piece with a hanging hole at one end. Several irregular hammer blades are mounted on the hammer blade shaft through the hanging hole, and each irregular hammer blade is separated by a hammer blade spacer.

[0020] The top of the double-cylinder body is provided with a feeding port, and the bottom of the double-cylinder body is provided with a discharging port.

[0021] After the unpacking mechanism breaks open the packaging, the elevator is used to lift and transport the chelated fly ash solidified block to the top of the two V-shaped opposing jaw plates for unloading. The bottom of the dustproof frame is connected to the input end of the spiral conveyor belt, the output end of the spiral conveyor belt is connected to the feeding port of the double-cylinder body, and the discharge port of the double-cylinder body is connected to the input end of the belt conveyor belt.

[0022] Furthermore, the hydraulic cylinder assembly also includes a piston rod mounting seat, which is located in the middle of the jaw plate. The cylinder piston rod is connected to the jaw plate by bolts to the piston rod mounting seat.

[0023] Furthermore, the guide support assembly also includes a guide post flange mounting seat, which is located at the four corners of the jaw plate. The straight guide post is connected to the jaw plate by means of the guide post flange mounting seat and flange fixation.

[0024] Furthermore, the guide support assembly also includes a displacement sensor, with one of the four linear guide posts in each set of the guide support assembly having the aforementioned displacement sensor built into it.

[0025] Furthermore, a sealing gasket mounting groove is machined at the junction of the front and two sides of the jaw plate, and a Teflon sealing sheet is fixed in the sealing gasket mounting groove with bolts.

[0026] Furthermore, the tip of the irregularly shaped hammer blade has fan-shaped serrations with the tooth tips facing upwards.

[0027] Furthermore, the long side of the irregularly shaped hammer blade on the side where it strikes is provided with an arc-shaped hammer blade.

[0028] Furthermore, the rotary crushing system also includes a centrifugal sealing disc, which is a circular disc with a sealing hole at the center and a boss around the edge of the sealing hole, with fastening screw holes in the boss.

[0029] The centrifugal sealing disc is inserted into the power shaft through the sealing hole, and the centrifugal sealing disc is installed on the power shaft by using a set screw through the fastening screw hole. The other end face of the centrifugal sealing disc without the boss is close to the inner end plate of the crushing chamber and has a gap of less than 0.5mm.

[0030] Furthermore, the centrifugal sealing disc has a spiral centrifugal groove machined on the other end face without the boss.

[0031] Furthermore, a rotating grid is installed between the bottom of the dustproof frame and the input end of the spiral conveyor belt.

[0032] The beneficial effects of this invention are as follows:

[0033] 1. Jaw static pressure coarse crusher has a feeding capacity for extremely large block diameters. Compared with traditional jaw crushers and other types of crushers, the crusher driven by hydraulic cylinders has a larger jaw plate opening, making it more suitable for feeding ultra-large materials.

[0034] 2. It can effectively control secondary pollution such as material debris splashing, dust, and spillage during production. Traditional jaw crushers, cone crushers, and box crushers generate a lot of splashing, dust, and spillage during the crushing process due to the high operating speed of the crushing mechanism, which causes serious secondary pollution to the production environment. It can greatly reduce material debris splashing and spillage while meeting crushing requirements.

[0035] 3. The crushing method is more in line with the material's crushing characteristics. While chelated ash blocks can be broken by high-speed impact or compression from hard objects, the impact speed or compression pressure cannot induce extreme compression, stirring, or kneading effects within the ash block's molecular cells. Otherwise, the water contained within the ash block will be released, leading to crushing failure. In the coarse crushing stage, the material is subjected to compression at different pressures, rates, and frequencies. The jaw plate stroke is controlled when the material is first fed in, compressing the entire ash block until it breaks apart. After the entire ash block breaks, the relative movement of the two jaw plates is controlled to push and shove the material left and right, combined with reciprocating short-stroke compression, to form smaller fragments. In the fine crushing stage, a densely packed multi-blade structure and arc-shaped toothed end hammers are used to obtain smaller particles. The rotary shearing curve during material crushing is optimized, and combined with a screenless structure, the material achieves maximum crushing residence time in the crushing chamber while maintaining good throughput and preventing blockage. Attached Figure Description

[0036] Figure 1This is a three-dimensional structural schematic diagram of an embodiment of the chelated fly ash solidified block crushing production line of the present invention.

[0037] Figure 2 This is a three-dimensional structural schematic diagram of an embodiment of the jaw static pressure coarse crusher described in this invention.

[0038] Figure 3 This is a front sectional view of an embodiment of the jaw static pressure coarse crusher described in this invention.

[0039] Figure 4 This is a three-dimensional schematic diagram of an embodiment of the jaw plate structure described in this invention.

[0040] Figure 5 This is a front cross-sectional view of an embodiment of the dual-shaft hammer crusher described in this invention.

[0041] Figure 6 This is a top cross-sectional view of an embodiment of the dual-shaft hammer crusher described in this invention.

[0042] Figure 7 This is a schematic diagram of the structure of one embodiment of the irregularly shaped hammer blade described in this invention.

[0043] Figure 8 This is a front view of an embodiment of the centrifugal sealing disc described in this invention.

[0044] Figure 9 This is a left view of one embodiment of the centrifugal sealing disc described in this invention.

[0045] The components include: unpacking mechanism 111, elevator 222, spiral conveyor belt 333, belt conveyor belt 444, jaw static pressure coarse crusher 555, twin-shaft hammer crusher 666, rotary screen 777, dustproof frame 11, jaw plate 22, hydraulic cylinder piston rod 33, hydraulic cylinder 44, linear guide column 55, steel guide wheel 66, piston rod mounting seat 77, guide column flange mounting seat 88, displacement sensor 99, and Teflon sealing sheet 1. 00, flange bolt thread hole 110, guide support through hole 120, hydraulic cylinder through hole 130, cylinder 1, end plate 2, power shaft 3, hammer turntable 4, hammer shaft 5, hammer spacer 6, irregular hammer 7, hammer shaft hole 8, suspension hole 9, fan-shaped serration 10, arc-shaped hammer blade 19, centrifugal sealing disc 12, sealing hole 13, boss 14, fastening screw hole 15, spiral centrifugal groove 16, feeding port 17, discharging port 18. Detailed Implementation

[0046] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0047] A chelated fly ash solidified block crushing production line includes a unpacking mechanism 111, an elevator 222, a spiral conveyor belt 333, a belt conveyor belt 444, and also includes a jaw static pressure coarse crusher 555 and a twin-shaft hammer crusher 666.

[0048] like Figure 1 As shown, the solidified fly ash mostly forms a whole ash block of about one cubic meter. Secondary chelation first requires crushing the solidified fly ash block into particles of two to three cubic millimeters to meet the process requirements. Due to the large crushing scale required by the process (about one cubic meter to two to three cubic millimeters) and the special physical characteristics of chelated fly ash, a two-stage crushing method combining coarse and fine crushing is required. Since the volume of the feed material for coarse crushing is one cubic meter and the feed fly ash block is hard, the jaw static pressure coarse crusher 555 has a larger opening and is more suitable for feeding large pieces of material. The hydraulically driven jaw plate 22 has a large extrusion force, which can effectively coarsely crush large pieces of material into particle size that meets the feeding requirements of fine crushing. The twin-shaft hammer crusher 666 continues to crush the feed material. Small pieces of material are hammered and rotated back and forth by densely distributed irregular hammers 7 in the crushing chamber to obtain the maximum crushing residence time and complete the uniform fine particle size output.

[0049] The jaw static pressure coarse crusher 555 includes: a dustproof frame 11, two V-shaped opposing jaw plates 22, a hydraulic cylinder assembly, and a guide support assembly.

[0050] The dustproof frame 11 is a box-type structure welded from steel plates, with the top and bottom surfaces open and the other four sides closed.

[0051] The two V-shaped opposing jaw plates 22 are arranged inside the dustproof frame 11. Five large through holes and flange bolt holes 110 are opened on the side of the dustproof frame 11. Four of the large through holes and flange bolt holes 110 are symmetrically opened at the four corners of the side and serve as guide support through holes 120. One of the large through holes and flange bolt holes 110 is opened in the middle of the side and serves as a hydraulic cylinder through hole 130.

[0052] There are two sets of hydraulic cylinder assemblies, each corresponding to one of the two jaw plates 22. The core components of the hydraulic cylinder assembly are the cylinder piston rod 33 and the hydraulic cylinder 44. The cylinder piston rod 33 is connected to the jaw plate 22 by passing vertically through the hydraulic cylinder through hole 130 from the outside. The hydraulic cylinder 44 is installed on the side using the flange bolt thread hole 110 of the hydraulic cylinder through hole 130 and matches the corresponding cylinder piston rod 33.

[0053] There are two sets of guide support assemblies, each corresponding to one of the two jaw plates 22. The core component of the guide support assembly is a linear guide post 55, which is connected to the jaw plate 22 by passing vertically through the guide support penetration hole 120 from the outside.

[0054] The bottom surface of the dustproof frame 11 is also provided with jaw plate 22 guide rails, and steel guide wheels 66 are provided on both sides of the bottom of the jaw plate 22.

[0055] like Figure 2 , Figure 3 As shown, the dustproof frame 11 dynamically suspends the jaw plate 22 inside the dustproof frame 11 through the linear guide post 55 and the jaw plate 22 guide rail. Two hydraulic cylinders 44 installed on both sides of the dustproof frame 11 are connected to the hydraulic station to provide power for the operation of the jaw plate 22, allowing the jaw plate 22 to reciprocate relative to each other inside the dustproof frame 11. The pressure load generated by the extrusion motion is borne by the dustproof frame 11. When the jaw plate 22 is running, the steel guide wheels 66 installed on both sides of the bottom of the jaw plate 22 support the downward gravity of the jaw plate 22. The four linear guide posts 55 on each side of the jaw plate 22 constrain the linear running posture of the jaw plate 22 and bear the uneven off-center load pressure when the jaw plate 22 is compressed.

[0056] The dual-shaft hammer crusher 666 includes: a double-cylinder main body and a rotary crushing system.

[0057] The two cylinders 1 of the double cylinder body are connected on the side and are enclosed by the two cylinders 1 and the end plates 2 on both sides of the cylinder 1. The enclosed space formed by them serves as the crushing chamber.

[0058] The two cylinders 1 are each equipped with a power shaft 3.

[0059] like Figure 5 As shown, in order to ensure production stability while maintaining sufficiently small particle size, the main body of the double cylinder needs to be equipped with two sets of power shafts 3. The feed cylinder 1 is the primary crushing mechanism, and the discharge cylinder 1 is the secondary crushing mechanism. The fly ash blocks are fed by the primary crushing mechanism. After being crushed into smaller block sizes by the high-speed hammer crusher of the primary mechanism, the material enters the secondary crushing mechanism along the rotation tangential direction. The secondary crushing mechanism then crushes the material into even smaller particles.

[0060] The rotary crushing system consists of a hammer turntable 4, a hammer shaft 5, a hammer spacer 6, and irregularly shaped hammers 7.

[0061] The hammer disc 4 has a central hole, the size of which matches the outer diameter of the power shaft 3. Each set of power shaft 3 has three hammer discs 4 inserted into it. The hammer discs 4 are evenly distributed and installed on the power shaft 3, forming a set of hammer discs 4. Each hammer disc 4 has several hammer shaft holes 8 equidistantly opened on its outer edge. The hammer shaft holes 8 of the three hammer discs 4 in each set of hammer discs 4 correspond to each other. The outer diameter of the hammer shaft 5 matches the hammer shaft hole 8. The hammer shaft 5 is inserted into the corresponding hammer shaft hole 8 of each set of hammer discs 4 and installed and fixed, so that the hammer shafts 5 are parallel to each other and to the power shaft 3.

[0062] The irregular hammer blade 7 is a long strip-shaped piece with a hanging hole 9 at one end. Several irregular hammer blades 7 are mounted on the hammer blade shaft 5 through the hanging hole 9, and the hammer blade spacer 6 is used as a spacing between each irregular hammer blade 7.

[0063] like Figure 6 As shown, when the dual-shaft hammer crusher 666 is working, the power shaft 3 drives the hammer turntable 4 to rotate. The hammer shaft 5, which is fixed on the outer edge of the hammer turntable 4, drives the irregular hammer 7 to rotate. Under the action of centrifugal force, the tip of the irregular hammer 7 will spread out along the radial axis towards the cylinder wall of the cylinder 1. After the fly ash blocks enter, they will be crushed into fine particles by the hammering of the irregular hammer 7.

[0064] The top of the double-cylinder body is provided with a feeding port 17, and the bottom of the double-cylinder body is provided with a discharge port 18.

[0065] After the unpacking mechanism 111 breaks open the packaging, the elevator 222 lifts and transports the chelated fly ash solidified block to the top of the two V-shaped opposing jaw plates 22. The bottom of the dustproof frame 11 is connected to the input end of the spiral conveyor belt 333, the output end of the spiral conveyor belt 333 is connected to the feeding port 17 of the double-cylinder body, and the discharge port 18 of the double-cylinder body is connected to the input end of the belt conveyor 444.

[0066] like Figure 1 As shown, the overall process of fly ash blocks entering the production line is as follows: the unpacking mechanism 111 breaks open the packaging, the elevator 222 lifts the large fly ash blocks to the jaw static pressure coarse crusher 555 for coarse crushing, and after coarse crushing, the screw conveyor 333 transports the small fly ash blocks to the twin-shaft hammer crusher 666 for fine crushing. The fly ash fines that meet the process requirements are carried away from the production line by the belt conveyor 444.

[0067] Furthermore, the hydraulic cylinder assembly also includes a piston rod mounting seat 77, which is located in the middle of the jaw plate 22. The cylinder piston rod 33 is connected to the jaw plate 22 by bolts to the piston rod mounting seat 77.

[0068] Furthermore, the guide support assembly also includes a guide post flange mounting seat 88, which is located at the four corners of the jaw plate 22. The straight guide post 55 is connected to the jaw plate 22 by means of the guide post flange mounting seat 88 and flange fixation.

[0069] Furthermore, the guide support assembly also includes a displacement sensor 99, and in each of the four linear guide posts 55 of the guide support assembly, one of the linear guide posts 55 has the aforementioned displacement sensor 99 built into it.

[0070] like Figure 2 , Figure 3 As shown, the displacement sensor 99 is used to provide feedback on the displacement signal of the jaw plate 22, and to control the movement mode of the jaw plate 22 manually or by program. The operating mode of the jaw plate 22 can be arbitrarily set so that the equipment can better adapt to production needs.

[0071] Furthermore, a sealing gasket mounting groove is machined at the junction of the front and two sides of the jaw plate 22, and a Teflon sealing sheet 100 is fixed in the sealing gasket mounting groove with bolts.

[0072] Teflon sealing sheet 100 installation position as follows Figure 4 As shown, the Teflon sealing sheets 100 on both sides of the jaw plate 22 and the sides of the dustproof frame 11 form a dynamic, sealed extrusion cavity, which confines the material within the cavity and prevents it from leaking outwards.

[0073] Furthermore, the tip of the irregular hammer blade 7 is a fan-shaped serration 10 with the tooth tips facing upwards.

[0074] Furthermore, the irregularly shaped hammer 7 has an arc-shaped hammer blade 19 on the long side of the side where it strikes.

[0075] like Figure 7 As shown, when the solidified fly ash is subjected to extreme extrusion, high-speed stirring and impact, etc., which can produce a behavior similar to cell wall breaking, the moisture trapped in the fly ash will be released again. This will destroy the brittleness of the fly ash block and even cause the fly ash block to re-form a wet mud lump. Conventional blades have straight edges. After hammering the material, the material moves in a direction perpendicular to the hammering direction. The optimized arc-shaped hammer blade 19 will cause the material to rotate after hammering and move along the edge towards the cylinder wall of the cylinder 1. The tip of the conventional blade has a straight edge. The optimized fan-shaped saw teeth 10 have a good cleaning effect on the material adhering to the cylinder wall of the cylinder 1. The tooth shape is consistent with the edge of the fan-shaped saw teeth 10. After the irregular hammer blade 7 rotates in the working direction, it has a good chip removal effect when scraping the material adhering to the cylinder wall, and the material is not easy to adhere to the tooth groove.

[0076] Furthermore, the rotary crushing system also includes a centrifugal sealing disc 12, which is a disc structure with a sealing hole 13 at the center of the disc. A boss 14 is machined around the edge of the sealing hole 13, and the boss 14 has fastening screw holes 15.

[0077] The centrifugal sealing disc 12 is inserted into the power shaft 3 through the sealing hole 13, and the centrifugal sealing disc 12 is installed on the power shaft 3 by using the set screw through the fastening screw hole 15. The other end face of the centrifugal sealing disc 12 without the boss 14 is close to the inner end plate 2 of the crushing chamber and has a gap of less than 0.5mm.

[0078] Furthermore, the centrifugal sealing disc 12 has a spiral centrifugal groove 16 machined on the other end face without the boss 14.

[0079] like Figure 8 , Figure 9 As shown, during the hammer crushing of materials, materials will overflow from the gap between the power shaft 3 and the end plate 2. A centrifugal sealing disc 12 needs to be installed. The centrifugal sealing disc 12 is installed on the power shaft 3 through the fastening screw hole 15 and rotates with the power shaft 3. Therefore, the centrifugal sealing disc 12 cannot directly contact the end plate 2. In order to solve the problem of material overflow, the centrifugal sealing disc 12 has a spiral centrifugal groove 16 machined on the other end face without the boss 14. When the material passes through the centrifugal sealing disc 12, it is thrown out along the spiral line by the spiral centrifugal groove 16 and re-enters the crushing chamber, and cannot overflow from the gap.

[0080] Furthermore, a rotating grid 777 is installed between the bottom of the dustproof frame 11 and the input end of the spiral conveyor belt 333.

[0081] like Figure 1 As shown, after the jaw static pressure coarse crusher 555 completes the fracturing, the coarse crushed fly ash blocks enter the rotating grid 777 from the bottom of the dustproof frame 11. Small ash blocks directly pass through the rotating grid 777's blades and enter the spiral conveyor belt 333. Ash blocks that cannot pass through are crushed into passable ash blocks by the auxiliary shearing of the rotating grid 777's blades and enter the spiral conveyor belt 333.

[0082] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A production line for crushing chelated fly ash solidified blocks, comprising an unpacking mechanism, an elevator, a spiral conveyor belt, and a belt conveyor belt, characterized in that, It also includes jaw static pressure coarse crushers and twin-shaft hammer crushers; The jaw static pressure coarse crusher includes: a dustproof frame, two V-shaped opposing jaw plates, a hydraulic cylinder assembly, and a guide support assembly; The dustproof frame is a box-type structure welded from steel plates, with the top and bottom surfaces open and the other four sides closed. The two V-shaped opposing jaw plates are arranged inside the dustproof frame. Five large through holes and flange bolt holes are opened on the side of the dustproof frame. Four of the large through holes and flange bolt holes are symmetrically opened at the four corners of the side and serve as guide support through holes. One of the large through holes and flange bolt holes is opened in the middle of the side and serves as a hydraulic cylinder through hole. There are two sets of hydraulic cylinder assemblies, each corresponding to two jaw plates. The core components of the hydraulic cylinder assembly are the cylinder piston rod and the hydraulic cylinder. The cylinder piston rod is connected to the jaw plate by passing vertically through the hydraulic cylinder through hole from the outside. The hydraulic cylinder is installed on the side using the flange bolt thread hole of the hydraulic cylinder through hole and matches the corresponding cylinder piston rod. There are two sets of guide support assemblies, each corresponding to two jaw plates. The core component of the guide support assembly is a linear guide post, which is connected to the jaw plate by passing vertically through the guide support penetration hole from the outside. The bottom surface of the dustproof frame is also provided with a jaw plate guide rail, and steel guide wheels are provided on both sides of the bottom of the jaw plate; The dual-shaft hammer crusher includes: a double-cylinder main body and a rotary crushing system; The two cylinders of the double-cylinder main body are connected on the side and are composed of two cylinders and end plates on both sides of the cylinders. The enclosed space formed by these two cylinders serves as the crushing chamber. Both cylinders are equipped with a power shaft at their central axis. The rotary crushing system consists of a hammer turntable, hammer shaft, hammer spacer, and irregularly shaped hammers; The hammer disc has a central hole, the size of which matches the outer diameter of the power shaft. Each set of the power shaft has three hammer discs inserted into it. The hammer discs are evenly distributed and installed on the power shaft as a set of hammer discs. Each hammer disc has several hammer shaft holes equidistantly opened on its outer edge. The hammer shaft holes of the three hammer discs in each set of hammer discs correspond to each other. The outer diameter of the hammer shaft matches the hammer shaft hole. The hammer shaft is inserted into the corresponding hammer shaft hole of each set of hammer discs and installed and fixed, so that the hammer shafts are parallel to each other and to the power shaft. The irregular hammer blade is a long strip-shaped piece with a hanging hole at one end. Several irregular hammer blades are mounted on the hammer blade shaft through the hanging hole, and each irregular hammer blade is separated by the hammer blade spacer. The top of the double-cylinder body is provided with a feeding port, and the bottom of the double-cylinder body is provided with a discharging port; After the unpacking mechanism breaks open the packaging, the elevator is used to lift and transport the chelated fly ash solidified block to the top of the two V-shaped opposing jaw plates for unloading. The bottom of the dustproof frame is connected to the input end of the spiral conveyor belt, the output end of the spiral conveyor belt is connected to the feeding port of the double-cylinder body, and the discharge port of the double-cylinder body is connected to the input end of the belt conveyor belt.

2. The chelated fly ash solidified block crushing production line according to claim 1, characterized in that, The hydraulic cylinder assembly also includes a piston rod mounting seat, which is located in the middle of the jaw plate. The cylinder piston rod is connected to the jaw plate by bolts to the piston rod mounting seat.

3. The chelated fly ash solidified block crushing production line according to claim 1, characterized in that, The guide support assembly also includes a guide post flange mounting seat, which is located at the four corners of the jaw plate. The straight guide post is connected to the jaw plate by means of the guide post flange mounting seat and flange fixation.

4. The chelated fly ash solidified block crushing production line according to claim 1, characterized in that, The guide support assembly also includes a displacement sensor, and in each of the four linear guide posts of the guide support assembly, one of the linear guide posts has the displacement sensor built into it.

5. The chelated fly ash solidified block crushing production line according to claim 1, characterized in that, The jaw plate has a sealing gasket mounting groove machined at the junction of the front and two sides, and a Teflon sealing sheet is fixed in the sealing gasket mounting groove with bolts.

6. The chelated fly ash solidified block crushing production line according to claim 1, characterized in that, The tip of the irregularly shaped hammer blade has fan-shaped serrations with the tooth tips facing upwards.

7. The chelated fly ash solidified block crushing production line according to claim 1 or 6, characterized in that, The irregularly shaped hammer blade has an arc-shaped hammer blade on the long side of the side where it strikes.

8. The chelated fly ash solidified block crushing production line according to claim 1, characterized in that, The rotary crushing system also includes a centrifugal sealing disc, which is a circular disc with a sealing hole at the center and a ring of bosses around the edge of the sealing hole. The bosses have fastening screw holes. The centrifugal sealing disc is inserted into the power shaft through the sealing hole, and the centrifugal sealing disc is installed on the power shaft by using a set screw through the fastening screw hole. The other end face of the centrifugal sealing disc without the boss is close to the inner end plate of the crushing chamber and has a gap of less than 0.5mm.

9. The chelated fly ash solidified block crushing production line according to claim 8, characterized in that, The centrifugal sealing disc has a spiral centrifugal groove machined on the other end face without a boss.

10. The chelated fly ash solidified block crushing production line according to claim 1, characterized in that, A rotating grid is installed between the bottom of the dustproof frame and the input end of the spiral conveyor belt.

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