Crushing and screening device

Abstract

The invention discloses a crushing and screening device, which belongs to the technical field of material treatment and comprises a crushing mechanism, a screening mechanism and a conveying mechanism which are matched with one another. The crushing mechanism comprises a base, a hammer head assembly, an arc-shaped sieve plate and a driving device, a box body is arranged at the top of the base, the hammer head assembly and the arc-shaped sieve plate are correspondingly arranged in the box body up and down, and the driving device is arranged on the base and used for controlling the hammer head assembly to crush blocks in sulfur powder; a discharge hole positioned below the arc-shaped sieve plate is formed in the front side wall of the arc-shaped sieve plate; the screening assembly is arranged on the front side of the base and located below the discharging port of the box body, the support is arranged at the bottom of the screening assembly, and a space for containing the conveying mechanism is formed below the support, and the conveying mechanism can move into the space to contain powder screened by the screening assembly. The method can effectively remove lumps in the sulfur powder, and improves the stability and environmental protection property of the sulfur burning process.

Description

Technical Field

[0001] The invention belongs to the technical field of material processing, and in particular relates to a crushing and screening device. Background Art

[0002] With the rapid development of my country's economy, the coking industry, as one of the important basic industries, has been expanding its production scale. However, the problem of desulfurization waste liquid treatment generated in the coking production process has become increasingly prominent. Traditional desulfurization waste liquid treatment methods mainly include wet desulfurization and dry desulfurization. Among them, the dry desulfurization process has been widely used in coking plants due to its environmental protection and high efficiency.

[0003] In the dry desulfurization process, the sulfur foam produced in the desulfurization process is made into solid sulfur powder through concentration, filtration, drying and other methods. However, due to the strong viscosity of the mixture, hard lumps of varying sizes are easily produced during the drying process. These lumps burn unstably during the sulfur incineration process, resulting in a large number of unburned lumps accumulating at the bottom of the furnace. Under high temperature conditions, these lumps gradually melt into liquid substances and flow out from the bottom of the furnace, emitting a strong stench. This not only seriously affects the environmental protection site, product quality and continuous production stability of the acid production process, but also requires regular manual cleaning, increasing production costs.

[0004] In addition, the original sulfur powder drying system directly transported the sulfur powder to the furnace silo or bagged it through a tube chain machine after drying it. Since the lumps generated during the drying process were not effectively removed, some lumps were contained in the sulfur powder. During the combustion process in the sulfur incinerator, these lumps were not fully burned and fell directly to the top of the furnace. They were slowly melted by the high temperature and formed liquid substances that flowed out from the bottom of the furnace. This not only caused the deterioration of the on-site environment, but also blocked the air inlet pipe, resulting in the inability to continuously operate the production.

[0005] Therefore, there is a need for a crushing and screening device that can effectively remove lumps in sulfur powder and improve the stability and environmental protection of the sulfur incineration process. Summary of the invention

[0006] The purpose of the present invention is to provide a crushing and screening device, which can effectively remove lumps in sulfur powder and improve the stability and environmental protection of the sulfur burning process.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is: A crushing and screening device comprises a crushing mechanism, a screening mechanism and a transport mechanism which cooperate with each other; the crushing mechanism comprises a base with a box body on the top, a hammer assembly and an arc-shaped screen plate correspondingly arranged inside the box body on the upper and lower sides, and a driving device arranged on the base to control the hammer assembly to crush the lumps in the sulfur powder, wherein a feed port is arranged on the top of the box body, and a discharge port located below the arc-shaped screen plate is opened on the front side wall thereof; the screening mechanism comprises a screening assembly arranged on the front side of the base and below the discharge port of the box body, and a bracket arranged at the bottom of the screening assembly and forming a space for accommodating the transport mechanism below, and the transport mechanism can be moved into the space to accommodate the powder screened by the screening assembly.

[0008] A further improvement of the technical solution of the present invention is that the driving device includes a motor arranged on a base, a driving pulley connected to the motor through a transmission shaft, a driven pulley located on the left side wall of the box and connected to the hammer head assembly inside it, and a transmission belt sleeved on the driving pulley and the driven pulley.

[0009] A further improvement of the technical solution of the present invention is that the hammer head assembly includes a main shaft with one end penetrating the left side wall of the box body and connected to the driven pulley and the other end rotatably connected to the right side wall of the box body, a plurality of hammer discs sleeved on the main shaft and evenly spaced along the length direction thereof, and a plurality of hammer heads hinged between each adjacent two hammer discs, and the hammer heads between two adjacent hammer discs are evenly spaced along the circumference of the hammer discs.

[0010] A further improvement of the technical solution of the present invention is that a pin shaft adapted to each hammer head is arranged between two adjacent hammer discs, and the two ends of the bottom of the pin shaft are respectively connected to the main shaft through a spring rod or the two ends of the pin shaft are connected to the two adjacent hammer discs.

[0011] A further improvement of the technical solution of the present invention is that the hammer head includes a connecting plate hinged on a pin shaft at one end, a hammering part with a quadrangular pyramid structure that is larger at the top and smaller at the bottom and is arranged at the other end of the connecting plate, and a hammer tip with a quadrangular pyramid structure is arranged on the hammering part; the inner walls on the front and rear sides of the box body are respectively provided with impact plates located above the arc-shaped screen plate, and the impact plates include a plurality of impact teeth with a triangular prism structure that are arranged along the length direction and cooperate with the hammer tip on the hammer head.

[0012] A further improvement of the technical solution of the present invention is that a guide plate is arranged below the arc-shaped screen plate, which is inclined downward and extends to the outside of the discharge port. The screening assembly includes a screen arranged on a bracket and located below the guide plate, and baffles arranged on the bracket and located around the screen respectively. A sweeping component that reciprocates on the surface of the screen is arranged on the baffle located on the left or right side of the screen, and the baffle on the opposite side of the sweeping component is connected to the bracket in a detachable manner.

[0013] A further improvement of the technical solution of the present invention is that the sweeping component includes a swing motor arranged outside the baffle and a sweeping rod that passes through the baffle and is connected to the swing motor and driven by the swing motor to perform reciprocating motion, wherein a through hole that conforms to the reciprocating motion trajectory of the sweeping rod is opened on the baffle, and brushes are evenly arranged on the bottom of the sweeping rod along its length direction. A further improvement of the technical solution of the present invention is that: the screen is tilted downward, and the diameter of its screen holes is smaller than the diameter of the screen holes of the arc screen plate; the guide plate tilts downward at an angle α, 30°≤α≤60°, and the screen tilts downward at an angle β, 10°≤β≤30°.

[0014] A further improvement of the technical solution of the present invention is that the transport mechanism is a transport trolley with a handle at the front end.

[0015] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is: The crushing and screening device of the present invention can effectively remove lumps in sulfur powder and improve the stability and environmental protection of the sulfur burning process.

[0016] The crushing mechanism and screening mechanism adopted by the present invention can achieve effective crushing and screening of lumps in sulfur powder, and further refine the sulfur powder, so that it can burn more stably after entering the sulfur incinerator. The crushing mechanism adopts a hammer assembly and an arc-shaped screen plate, combined with a driving device to achieve crushing processing, while the screening mechanism improves the efficiency of further screening through a screen and a sweeping component. In addition, the design of the transportation mechanism enables the screened powder to be conveniently transported. The entire device makes the crushing, screening and transportation process of lumps more efficient and convenient, improves production efficiency, reduces labor intensity, and has significant economic benefits and practical value.

[0017] The hammer tip of the hammer head used in the present invention cooperates with the counter-attack teeth on the counter-attack plate, increasing the number of contacts between the material and the hammer head, thereby improving the crushing efficiency. The hammering part of the hammer head with a four-sided platform structure, the hammer tip with a four-sided pyramid structure, and the counter-attack teeth of the counter-attack plate with a triangular prism structure enable the material to be subjected to more impact and shear force during the crushing process, thereby enhancing the crushing effect. At the same time, this design enables the hammer head to disperse the force when crushing the material, reduces the wear of the hammer head, and prolongs the service life of the hammer head assembly.

[0018] The present invention adopts a pin shaft adapted to each hammer head arranged between two adjacent hammer discs, and the bottom ends of the pin shaft are respectively connected to the main shaft through spring rods, which can absorb part of the impact force, protect the hammer head and the pin shaft, effectively reduce the wear of the hammer head during the crushing process, and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the crushing and screening device of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the hammer assembly in the crushing and screening device of the present invention; Figure 3 It is a schematic diagram of the planar structure of the hammer assembly in Embodiment 1 of the crushing and screening device of the present invention; Figure 4 It is a schematic diagram of the structure of the hammer head in the crushing and screening device of the present invention; Figure 5 It is a schematic plan view of the crushing mechanism in the crushing and screening device of the present invention; Figure 6 It is a schematic diagram of the planar structure of the hammer assembly in Embodiment 2 of the crushing and screening device of the present invention; Among them, 1. base, 2. feed port, 3. discharge port, 4. box body, 5. arc screen plate, 6. bracket, 7. motor, 8. driving pulley, 9. driven pulley, 10. transmission belt, 11. hammer plate, 12. hammer head, 12-1. connecting plate, 12-2. hammering part, 12-3. hammer tip, 13. main shaft, 14. pin shaft, 15. spring rod, 16. impact plate, 17. baffle, 18. swing motor, 19. sweeping rod, 20. brush, 21. transport trolley, 22. handle, 23. guide plate, 24. screen. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with embodiments: Example 1 like Figure 1As shown, this embodiment provides a crushing and screening device, including a crushing mechanism, a screening mechanism and a transport mechanism that cooperate with each other. Specifically, the crushing mechanism includes a base 1, a box 4, a hammer assembly, an arc screen plate 5 and a driving device, the box 4 is arranged on the top of the base 1, the hammer assembly and the arc screen plate 5 are arranged inside the box 4 in correspondence, the driving device is arranged on the base 1, and the driving device controls the hammer assembly to crush the lumps in the sulfur powder, wherein a feed port 2 is provided on the top of the box 4, and a discharge port 3 located below the arc screen plate 5 is provided on the front side wall thereof. During the crushing process, the lumps in the sulfur powder are put into the box 4 from the feed port 2, and are crushed by the hammer assembly inside the box 4, and then the crushed fine sulfur powder enters the discharge port 3 through the arc screen plate 5 and is discharged therefrom, and the lumps that fail to pass through the arc screen plate 5 continue to be crushed. The screening mechanism includes a screening component and a bracket 6, wherein the screening component is arranged at the front side of the base 1 and below the discharge port 3 of the box 4, and is used to further screen the sulfur powder discharged from the discharge port 3 of the crushing mechanism to obtain further refined sulfur powder. The bracket 6 is arranged at the bottom of the screening component, so that a space for accommodating a transport mechanism is formed below the screening component. The transport mechanism can move into the space to accommodate the sulfur powder screened by the screening component and transport it to the sulfur incinerator for combustion. Preferably, the transport mechanism is a transport trolley 21 with a handle 22 at the front end. The present invention realizes the effective crushing and screening of lumps in the sulfur powder, so that it burns more stably after entering the sulfur incinerator.

[0021] Specifically, the driving device includes a motor 7, a driving pulley 8, a driven pulley 9 and a transmission belt 10. The motor 7 is arranged on the base 1. The driving pulley 8 is connected to the motor 7 through a transmission shaft. The driven pulley 9 is located on the left side wall of the box body 4 and is connected to the hammer head assembly therein. The transmission belt 10 is sleeved on the driving pulley 8 and the driven pulley 9. After the motor 7 is started, the driving pulley 8 rotates, so that the driven pulley 9 drives the hammer head assembly to rotate, thereby crushing the block objects.

[0022] Further, such as Figure 2 As shown, the hammer assembly includes a main shaft 13, a plurality of hammer discs 11 and a plurality of hammer heads 12. One end of the main shaft 13 passes through the left side wall of the box body 4 and is connected to the driven pulley 9, and the other end thereof is rotatably connected to the right side wall of the box body 4. The plurality of hammer discs 11 are sleeved on the main shaft 13 and are evenly spaced along the length direction thereof. The plurality of hammer heads 12 are hinged between every two adjacent hammer discs 11, and the hammer heads 12 between two adjacent hammer discs 11 are evenly spaced along the circumference of the hammer disc 11.

[0023] like Figure 3As shown, a pin shaft 14 adapted to each hammer head 12 is arranged between two adjacent hammer discs 11, that is, the hammer head 12 is hinged on the pin shaft 14, and the two ends of the bottom of the pin shaft 14 are respectively connected to the main shaft 13 through spring rods 15, which can absorb part of the impact force, protect the hammer head 12 and the pin shaft 14, effectively reduce the wear of the hammer head 12 during the crushing process, and extend its service life. Preferably, the spring rod 15 can adopt a telescopic rod with a spring sleeve on the outside.

[0024] like Figure 4 As shown, the hammer head 12 includes a connecting plate 12-1, a hammering part 12-2 and a hammer tip 12-3. One end of the connecting plate 12-1 is hinged on the pin 14. The hammering part 12-2 is arranged at the other end of the connecting plate 12-1 and is integrally formed with the connecting plate 12-1. Preferably, the hammering part 12-2 adopts a four-sided pyramid structure with a large top and a small bottom. The hammer tip 12-3 is arranged on the hammering part 12-2 and is integrally formed with it. Preferably, the hammer tip 12-3 adopts a four-sided pyramid structure. Figure 5 As shown, the inner walls of the front and rear sides of the box body 4 are respectively provided with a counter-attack plate 16 located above the arc-shaped screen plate 5, and the counter-attack plate 16 includes a plurality of counter-attack teeth, each counter-attack tooth is arranged along the length direction of the counter-attack plate 16, and preferably, the counter-attack tooth adopts a triangular prism structure. The hammer tip 12-3 of the hammer head 12 cooperates with the counter-attack teeth on the counter-attack plate 16, which increases the number of contacts between the material and the hammer head 12, thereby improving the crushing efficiency, and the hammering part 12-2 of the hammer head with a four-sided platform structure, the hammer tip 12-3 of the four-sided pyramid structure, and the counter-attack teeth of the counter-attack plate 16 with a triangular prism structure, so that the material can be subjected to more impact and shear force during the crushing process, thereby enhancing the crushing effect. At the same time, this design enables the hammer head 12 to disperse the force when crushing the material, reduces the wear of the hammer head 12, and prolongs the service life of the hammer head assembly.

[0025] Furthermore, a guide plate 23 is provided below the arc-shaped screen plate 5, which is inclined downward and extends to the outside of the discharge port 3, and is used to guide the sulfur powder after the crushing process of the crushing mechanism. The screening assembly includes a screen 24 arranged on the bracket 6 and located below the guide plate 23, and baffles 17 arranged on the bracket 6 and located around the screen 24. Under the action of the bracket 6, a space for accommodating the transport trolley 21 can be formed below the screen 24. Among them, a sweeping component is provided on the baffle 17 located on the left or right side of the screen 24, and the sweeping component can reciprocate on the surface of the screen 24. The baffle 17 on the opposite side of the sweeping component is connected to the bracket 6 in a detachable manner, such as plugging or bolting, so as to clean up the materials that cannot be screened by the screen 24.

[0026] Specifically, the sweeping component includes a swing motor 18 and a sweeping rod 19, wherein the swing motor 18 is arranged outside the baffle 17, and the sweeping rod 19 penetrates the baffle 17 and is connected to the swing motor 18 and driven by the swing motor 18 to perform reciprocating motion, wherein a through hole conforming to the reciprocating motion trajectory of the sweeping rod 19 is provided on the baffle 17, and a brush 20 is evenly arranged at the bottom of the sweeping rod 19 along its length direction, which can effectively sweep the material on the surface of the screen 24, so that the powder on the screen 24 is more uniform, and the screen 24 is prevented from being blocked, thereby improving the screening efficiency. Further, the screen 24 is tilted downward, and the diameter of its screen hole is smaller than the diameter of the screen hole of the arc screen plate 5, so that the sulfur powder is finer and the combustion is more complete. Preferably, the guide plate 23 is tilted downward at an angle of α, 30°≤α≤60°, and the screen 24 is tilted downward at an angle of β, 10°≤β≤30°.

[0027] Example 2 like Figure 6 As shown, the crushing and screening device provided in this embodiment has the same structure of the components and the connection mode between the components except the pin shaft 14 as those in Embodiment 1, except that: A pin shaft 14 adapted to each hammer head 12 is arranged between two adjacent hammer discs 11 , that is, the hammer head 12 is hinged on the pin shaft 14 , and both ends of the pin shaft 14 are connected to the two adjacent hammer discs 11 .

[0028] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A crushing and screening device, characterized in that: The invention comprises a crushing mechanism, a screening mechanism and a transport mechanism which cooperate with each other; the crushing mechanism comprises a base (1) with a box (4) on the top, a hammer assembly and an arc-shaped screen plate (5) arranged correspondingly in the box (4) from top to bottom, and a driving device arranged on the base (1) for controlling the hammer assembly to crush the lumps in the sulfur powder, wherein the box (4) is provided with a feed inlet (2) on the top, and a discharge outlet (3) located below the arc-shaped screen plate (5) on the front side wall; the screening mechanism comprises a screening assembly arranged on the front side of the base (1) and located below the discharge outlet (3) of the box (4), and a bracket (6) arranged at the bottom of the screening assembly and having a space for accommodating the transport mechanism formed thereunder, wherein the transport mechanism can move into the space to accommodate the powder screened by the screening assembly.

2. A crushing and screening device according to claim 1, characterized in that: The driving device comprises a motor (7) arranged on a base (1), a driving pulley (8) connected to the motor (7) via a transmission shaft, a driven pulley (9) located on the left side wall of the box body (4) and connected to a hammer assembly inside the box body (4), and a transmission belt (10) sleeved on the driving pulley (8) and the driven pulley (9).

3. A crushing and screening device according to claim 2, characterized in that: The hammer assembly comprises a main shaft (13) with one end penetrating through the left side wall of the box (4) and connected to a driven pulley (9) and with the other end rotatably connected to the right side wall of the box (4), a plurality of hammer discs (11) sleeved on the main shaft (13) and evenly spaced along the length direction thereof, and a plurality of hammer heads (12) hinged between each two adjacent hammer discs (11), wherein the hammer heads (12) between the two adjacent hammer discs (11) are evenly spaced along the circumference of the hammer discs (11).

4. A crushing and screening device according to claim 3, characterized in that: A pin shaft (14) adapted to each hammer head (12) is provided between two adjacent hammer discs (11), and two ends of the bottom of the pin shaft (14) are respectively connected to the main shaft (13) through spring rods (15) or two ends of the pin shaft (14) are connected to two adjacent hammer discs (11).

5. A crushing and screening device according to claim 4, characterized in that: The hammer head (12) comprises a connecting plate (12-1) hinged at one end on a pin shaft (14), a hammering portion (12-2) with a quadrangular pyramid structure having a larger top and a smaller bottom and arranged at the other end of the connecting plate (12-1), and a hammer tip (12-3) with a quadrangular pyramid structure arranged on the hammering portion (12-2); and counter-attack plates (16) located above the arc-shaped screen plate (5) are respectively arranged on the inner walls on both the front and rear sides of the box body (4), and the counter-attack plates (16) comprise a plurality of counter-attack teeth with a triangular prism structure arranged along the length direction thereof and cooperating with the hammer tip (12-3) on the hammer head (12).

6. A crushing and screening device according to claim 5, characterized in that: A guide plate (23) is arranged below the arc-shaped screen plate (5) and is inclined downward and extends to the outside of the discharge port (3). The screening assembly comprises a screen (24) arranged on the bracket (6) and located below the guide plate (23), and baffles (17) arranged on the bracket (6) and located around the screen (24). A sweeping component that reciprocates on the surface of the screen (24) is arranged on the baffle (17) located on the left or right side of the screen (24), and the baffle (17) on the opposite side of the sweeping component is connected to the bracket (6) in a detachable manner.

7. A crushing and screening device according to claim 6, characterized in that: The sweeping component comprises a swinging motor (18) arranged outside the baffle (17) and a sweeping rod (19) penetrating the baffle (17) and connected to the swinging motor (18) and driven by the swinging motor to perform reciprocating motion, wherein a through hole conforming to the reciprocating motion trajectory of the sweeping rod (19) is provided on the baffle (17), and brushes (20) are evenly arranged at the bottom of the sweeping rod (19) along its length direction.

8. A crushing and screening device according to any one of claims 6 or 7, characterized in that: The screen (24) is tilted downward, and the diameter of its screen holes is smaller than the diameter of the screen holes of the arc-shaped screen plate (5); the guide plate (23) is tilted downward at an angle α, 30°≤α≤60°, and the screen (24) is tilted downward at an angle β, 10°≤β≤30°.

9. A crushing and screening device according to any one of claims 6 or 7, characterized in that: The transport mechanism is a transport trolley (21) with a handle (22) at the front end.

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