A method of macadam production

Abstract

This invention relates to a method for producing crushed stone, which is accomplished by a crushing production device. The crushing production device includes a crusher, a storage silo with a discharge port at its lower end, a vibrating feeder with its discharge end aligned with the stone inlet, and a feeding belt with its feeding end located below the crushed stone outlet. The crusher has a stone inlet and a crushed stone outlet. The discharge end of the feeding belt is located above the storage silo, and the feeding belt is inclined, with its feeding end lower than its discharge end. The crushing process is as follows: stones are fed into the vibrating feeder and sent to the stone inlet of the crusher. After being crushed into crushed stone by the crusher, the stones are output from the crushed stone outlet to the feeding belt. The feeding belt transports the crushed stone to the storage silo for storage. When crushed stone is needed, it is discharged through the discharge port. The first objective of this invention is to provide a crushing production method that allows for convenient feeding and discharging into the storage silo, solving the problem of laborious feeding and discharging in existing crushing production methods.

Description

Technical Field

[0001] This utility model relates to the field of bridge and road construction technology, specifically to a method for producing crushed stone. Background Technology

[0002] Crushed stone is required during bridge and road construction. Crushed stone is processed using a crusher. In existing crushed stone processing methods, both feeding and discharging are done manually, which is labor-intensive and inefficient. Dust on the crushed stone cannot be separated, affecting the concrete's performance, or it is simply blown away, preventing dust recycling and resulting in waste. Summary of the Invention

[0003] The first objective of this invention is to provide a method for producing crushed stone that allows for convenient feeding and discharging of materials into a storage bin, thereby solving the problem of laborious feeding and discharging in existing crushed stone production methods.

[0004] The second objective of this invention is to provide a method for producing crushed stone that separates dust from the crushed stone, thereby solving the problem that existing crushed stone dust cannot be centrally utilized.

[0005] The above technical problems are solved by the following technical solution: a method for producing crushed stone, characterized in that it is accomplished by a crushing stone production device, which includes a crusher, a storage bin with a discharge port at the lower end, a vibrating feeder with the discharge end aligned with the stone inlet, and a feeding belt with the feeding end located below the crushed stone outlet. The crusher has a stone inlet and a crushed stone outlet. The discharge end of the feeding belt is located above the storage bin. The feeding belt is inclined, with the feeding end lower than the discharge end. The crushing process is as follows: stones are fed into the vibrating feeder and sent to the stone inlet of the crusher. After being crushed into crushed stone by the crusher, the stones are output from the crushed stone outlet to the feeding belt. The feeding belt transports the crushed stone to the storage bin for storage. When crushed stone is needed, it is output through the discharge port.

[0006] Preferably, each of the discharge ports is connected to the inlet of the same vibrating feeder. This ensures a smoother and more uniform output of crushed stone.

[0007] Preferably, the system also includes a loading platform located next to the vibrating feeder, accessible to a truck. When the truck is positioned on the loading platform with its rear facing the vibrating feeder, the cargo in the truck bed can be unloaded into the feed inlet of the vibrating feeder. In use, the truck pulls the stones onto the loading platform and then pours them into the vibrating feeder, improving the convenience of stone transport.

[0008] Preferably, the device also includes a crushed stone washing waste residue recovery device, which includes a vertical discharge channel. The upper end of the vertical discharge channel is used to receive crushed stone output from the outlet of the storage silo. The vertical discharge channel includes a front side wall, a right side wall, a rear side wall, and a left side wall connected end to end. The front side wall is provided with several upward spray holes that spray backward. The rear side wall is provided with an upper water inlet hole at the part sprayed by the upward spray holes. The right side wall is provided with several downward spray holes that spray leftward. The left side wall is provided with a lower water inlet hole at the part sprayed by the downward spray holes. All the downward spray holes are located below all the upward spray holes. The upper water inlet hole and the... The lower inlet tunnel is connected to the sedimentation tank, allowing water flowing in from the upper and lower inlets to enter the sedimentation tank. The lower end of the discharge channel is connected to the sedimentation tank. The discharge channel is equipped with an inclined channel section filter plate with filter holes. The discharge channel is equipped with a coarse crushed stone outlet aligned with the bottom end of the channel section filter plate. The coarse crushed stone outlet is connected to the inlet end of the coarse crushed stone receiving hopper. The coarse crushed stone receiving hopper is equipped with a coarse crushed stone discharge port. A water distribution chamber is provided around the discharge channel. The inlets of the upper and lower spray holes are connected to the water distribution chamber. The water distribution chamber is connected to the outlet end of the water pump. The inlet of the water pump is connected to a clean water source. During operation, the crushed stone falls through the vertical feeding channel. First, water is sprayed backward from the upper nozzles, removing dust adhering to the top, bottom, left, and upper right sides of the stone. This dust, along with the water, enters the upper inlet and reaches the sedimentation tank. Dust on the front side of the stone is washed away by the water. Then, water is sprayed to the left from the lower nozzles, removing dust adhering to the top, bottom, front, and rear sides of the stone. This dust, along with the water, enters the lower inlet and reaches the sedimentation tank. Dust on the rear side of the stone is washed away by the water. The washed stone falls onto the filter plate in the channel section, and the water falls into the sedimentation tank. The stone rolls to the coarse crushing outlet, reaches the coarse crushing receiving hopper, and is then discharged from the coarse crushing outlet. The water in the sedimentation tank settles, allowing the dust to be removed as sludge and dried for reuse. This process reduces the amount of dust adhering to the crushed stone, improving its quality, and allowing the crushed stone powder to be separated and utilized independently.

[0009] Preferably, the feeding channel is equipped with a downward-facing exhaust fan located below the filter plate in the channel section. This allows the crushed stone at the bottom to accelerate and separate during its descent, thus facilitating thorough washing of all surfaces of the crushed stone.

[0010] Preferably, the sedimentation tank is equipped with a filter plate in the filtration section. This filter plate separates a clear water zone and a turbid water zone located above the clear water zone. The clear water zone constitutes the clear water source. The lower ends of the upper water inlet, lower water inlet, and discharge channel are located above the turbid water zone. Upon initial use, the output of the clear water source is first turned off. Dust settles on the filter cloth and filter plate, forming a sludge filter layer of a set thickness. Then, the output of clear water from the clear water zone is turned on, allowing the sedimentation tank to utilize dust for filtration, thus facilitating water circulation and cleaning.

[0011] Preferably, the crushed stone washing waste residue recycling device further includes an upper screen plate for receiving the crushed stone output from the discharge port. The upper screen plate is inclined, with its high end located below the discharge port and its low end located above the vertical material discharge channel, allowing the crushed stone under the rollers on the upper screen plate to fall into the vertical material discharge channel. A receiving chamber is located below the upper screen plate, with its bottom wall inclined and equipped with dust removal holes. A spray head is located at the high end of the bottom wall of the receiving chamber, spraying towards the low end of the bottom wall. The crushed stone washing waste residue recycling device also includes a fine crushed stone receiving hopper aligned with the low end of the bottom wall of the receiving chamber to receive the crushed stone rolling off the bottom wall. Dust falling through the dust removal holes falls into the sedimentation tank. The opening area of ​​the screen holes on the upper screen plate is larger than the opening area of ​​the dust removal holes. This allows for the separation of crushed stone by size to meet different needs. Both types of crushed stone can be washed.

[0012] Preferably, the spray head is connected to the outlet end of the water pump. This results in a compact structure.

[0013] Preferably, an external discharge channel is also included. The vertical discharge channel is located within the external discharge channel. The three walls of the external discharge channel form the walls of the vertical discharge channel. One side wall of the external discharge channel is inclined and connects to the lower end of the upper screen plate between the vertical discharge channel and the external discharge channel. Several air blowing holes are provided on one side wall of the external discharge channel. The inlet end of the air blowing holes communicates with the air distribution chamber, which is aligned with the outlet end of the blower. An air suction port is provided on the wall of the discharge channel opposite to one side wall of the external discharge channel. The air suction port is connected to the inlet end of the blower and is equipped with a dust-blocking screen. A dust removal channel is formed between the wall of the discharge channel opposite to one side wall of the external discharge channel and the vertical discharge channel, with its lower end connected to the sedimentation tank. This allows for the first air blowing to remove dust from the crushed stone before washing, improving the washing effect. Furthermore, the secondary vertical cross-blowing method provides good dust removal, and the blown-off dust can be centrally recycled in the sedimentation tank.

[0014] Preferably, the air inlet surface of the dust-blocking mesh is inclined downwards. This improves the dust falling effect.

[0015] Preferably, the fine crushed stone receiving hopper and the coarse crushed stone receiving hopper share a common wall, and the vertical discharge channel is located between the dust discharge channel and the coarse crushed stone receiving hopper. This design offers good structural compactness.

[0016] Preferably, the upper surface of one sidewall of the external feeding channel is provided with a friction-enhancing layer. This allows the crushed stone to tumble as it falls up and down along one sidewall of the external feeding channel, resulting in better dust removal.

[0017] The beneficial effects of this invention are: convenient and labor-saving feeding, convenient discharge and storage; and the ability to separate dust from crushed stone for centralized utilization. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of Embodiment 1 of the stone crushing device;

[0019] Figure 2 This is a partial schematic diagram of Embodiment 2 of the stone crushing device;

[0020] Figure 3 for Figure 2 A magnified view of a portion of point A.

[0021] In the diagram: 1. Crusher; 2. Stone inlet; 3. Crusher outlet; 4. Discharge port; 5. Storage silo; 6. Vibrating feeder; 7. Feeding belt; 8. Vibrating unloader; 9. Truck; 10. Loading platform; 11. Truck hopper; 12. Vertical discharge channel; 13. External discharge channel; 14. One side wall of the external discharge channel; 15. Upper screen plate; 16. Air blowing hole; 17. Air distribution chamber; 18. Blower; 19. Wall opposite the external discharge channel; 20. Suction port; 21. Dust filter; 22. Sedimentation tank; 33. Dropper. Dust channel 23, front side wall 24, right side wall 25, left side wall 26, upper spray hole 27, lower spray hole 28, lower water inlet 29, filter hole 30, filter plate of channel section 31, coarse crushed stone outlet 32, coarse crushed stone receiving hopper 33, coarse crushed stone discharge port 34, water distribution chamber 35, water pump 36, exhaust fan 37, filter plate of filter pool section 38, clear water zone 39, turbid water zone 40, receiving chamber 41, inclined bottom wall of receiving chamber 42, spray head 43, fine crushed stone receiving hopper 44, crushed stone outlet 45. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] Example 1, see Figure 1A method for producing crushed stone is disclosed, which is accomplished by a crushing device including a crusher 1, which has a stone inlet 2 and a crushed stone outlet 3. It also includes a storage bin 5 with a discharge port 4 at its lower end, a vibrating feeder 6 with its discharge end aligned with the stone inlet, and a feeding belt 7 with its feeding end located below the crushed stone outlet. The discharge end of the feeding belt is located above the storage bin, and the feeding belt is inclined, with its feeding end lower than its discharge end. There are two discharge ports, each connected to the inlet end of a vibrating feeder 8. The device also includes a loading platform 10 for a truck 9 located next to the vibrating feeder, allowing the truck to drive onto the platform with its rear facing the vibrating feeder. When the truck is on the loading platform with its rear facing the vibrating feeder, the cargo in the truck bed 11 can be unloaded into the inlet of the vibrating feeder.

[0024] In use, stones are fed into the vibrating feeder by a truck and sent to the stone inlet of the crusher. The stones are crushed into gravel by the crusher and then output from the gravel outlet to the feeding belt. The feeding belt transports the gravel to the storage bin for storage. When the gravel is needed, it is output through the discharge port.

[0025] Example 2 differs from Example 1 in that:

[0026] See Figure 2 and Figure 3 The crushing device also includes a waste slag recovery device for crushed stone washing output from the vibrating feeder. The waste slag recovery device includes a vertical discharge channel 12, located within the external discharge channel 13. The front and rear right walls of the external discharge channel form the front and rear right walls of the vertical discharge channel. One side wall 14 of the external discharge channel (i.e., the upper end of the right side wall) is inclined and connected to the lower end of the upper screen plate 15 between the vertical discharge channel and the external discharge channel. Several air blowing holes 16 are provided on one side wall of the external discharge channel. The inlet end of the air blowing hole is connected to the air distribution chamber 17, which is aligned with the outlet end of the blower 18. An air intake 20 is provided on the wall 19 (i.e., the left side wall) of the discharge channel opposite to one side wall of the external discharge channel. The air intake 20 is connected to the inlet end of the blower and is equipped with a dust filter 21. A dust removal channel 23, whose lower end is connected to the sedimentation tank 22, is formed between the wall opposite to one side wall of the external discharge channel and the vertical discharge channel. The air inlet side surface of the dust filter is tilted downwards.

[0027] The vertical discharge channel includes a front sidewall 24, a right sidewall 25, a rear sidewall, and a left sidewall 26 connected end to end. The front sidewall has several upward spray holes 27 that spray backward. The rear sidewall has an upper water inlet hole at the part sprayed by the upward spray holes. The right sidewall has several downward spray holes 28 that spray left. The left sidewall has a lower water inlet hole 29 at the part sprayed by the downward spray holes. All the downward spray holes are located below all the upward spray holes. The upper and lower water inlets are connected to the sedimentation tank, allowing water flowing in from the upper and lower water inlets to enter the sedimentation tank. The lower end of the feeding channel is connected to the sedimentation tank. The feeding channel is equipped with an inclined channel section filter plate 31 with filter holes 30. The feeding channel has a coarse crushed stone outlet 32 ​​aligned with the bottom end of the channel section filter plate. The coarse crushed stone outlet is connected to the inlet end of the coarse crushed stone receiving hopper 33. The coarse crushed stone receiving hopper has a coarse crushed stone discharge port 34. A water distribution chamber 35 is provided around the periphery of the feeding channel. The inlets of the upper and lower spray holes are connected to the water distribution chamber. The water distribution chamber is connected to the outlet end of the water pump 36. The inlet of the water pump is connected to a clean water source. The feeding channel is equipped with an exhaust fan 37 located below the channel section filter plate with its inlet facing downwards. The sedimentation tank is equipped with a filter plate 38, which separates the crushed stone at the bottom during its descent, facilitating thorough washing of all surfaces. The filter plate separates a clear water zone 39 from a turbid water zone 40 located above the clear water zone. The clear water zone serves as the source of clean water, with the lower ends of the upper and lower inlets and the discharge channel located above the turbid water zone. Upon initial use, the clear water output is turned off, allowing dust to settle on the filter cloth and filter plate, forming a sludge filter layer of a set thickness. Then, the clear water output is turned on, enabling the sedimentation tank to filter dust and facilitating water circulation and cleaning. The upper screen plate catches the crushed stone discharged from the outlet. The upper screen plate is inclined. The upper screen plate has its high end below the discharge port of the vibrating feeder and its low end above the outer channel, allowing the crushed stone under the rollers on the upper screen plate to fall into the vertical material channel. A receiving chamber 41 is located below the upper screen plate, with its bottom wall inclined 42 and equipped with dust removal holes. A spray head 43, pointing towards the low end of the bottom wall of the receiving chamber, is located at the high end of the bottom wall. The crushed stone washing waste recovery device also includes a fine crushed stone receiving hopper 44, aligned with the low end of the bottom wall of the receiving chamber, to catch the crushed stone rolling off the bottom wall. The crushed stone receiving head has a crushed stone outlet 45, and dust falling through the dust removal holes falls into the sedimentation tank. The opening area of ​​the screen holes on the upper screen plate is larger than the opening area of ​​the dust removal holes. The spray head is connected to the outlet end of the water pump. The fine crushed stone receiving hopper and the coarse crushed stone receiving hopper share a common wall, and the vertical material channel is located between the dust removal channel and the coarse crushed stone receiving hopper.

[0028] During operation, the crushed stone is separated into coarse and fine particles by an upper screen plate. The coarse particles reach the outer channel and then enter the vertical feed channel. The portion above the vertical feed channel in the outer channel is blown to remove dust. As the crushed stone falls through the vertical feed channel, it is first sprayed with water from the upper nozzles to the rear, which removes the dust adhering to the upper, lower, left, and upper right sides of the crushed stone. This dust then enters the upper water inlet and reaches the sedimentation tank. The dust on the front side of the crushed stone is washed down by the water and falls off. The rear side of the crushed stone is sprayed with water from the lower nozzles to the left, which removes the dust adhering to the upper, lower, front, and rear sides of the crushed stone. This dust then enters the lower water inlet and reaches the sedimentation tank. The dust on the rear side of the crushed stone is washed down by the water and falls off. The washed crushed stone falls onto the filter plate in the channel section, and the water falls into the sedimentation tank. The crushed stone rolls to the coarse crushed stone outlet, reaches the coarse crushed stone receiving hopper, and is then discharged from the coarse crushed stone outlet. After sedimentation in the sedimentation tank, the dust is removed and dried in the form of sludge for reuse. The fine gravel is also cleaned of dust after being washed with water.

Claims

1. A method for producing crushed stone, characterized in that, This is accomplished using a stone crushing production device, which includes a stone crusher, a storage silo with a discharge port at the lower end, a vibrating feeder with its discharge end aligned with the stone inlet, and a feeding belt with its feeding end located below the stone outlet. The stone crusher has a stone inlet and a stone outlet. The feeding end of the feeding belt is located above the storage silo, and the feeding belt is inclined with its feeding end lower than its discharging end. The stone crushing process is as follows: stones are fed into the vibrating feeder and sent to the stone inlet of the stone crusher. After being crushed into gravel by the stone crusher, the stones are output from the gravel outlet to the feeding belt. The feeding belt transports the gravel to the storage silo for storage. When the gravel is needed, it is output through the discharge port. It also includes a crushed stone washing waste residue recycling device, which includes a vertical discharge channel. The upper end of the vertical discharge channel is used to receive crushed stone output from the outlet of the storage silo. The vertical discharge channel includes a front side wall, a right side wall, a rear side wall, and a left side wall connected end to end. The front side wall is provided with several upward spray holes that spray backward. The rear side wall is provided with an upper water inlet hole at the part sprayed by the upward spray holes. The right side wall is provided with several downward spray holes that spray leftward. The left side wall is provided with a lower water inlet hole at the part sprayed by the downward spray holes. All the downward spray holes are located below all the upward spray holes. The upper water inlet hole and the lower water inlet hole are located at the same depth. The sedimentation tank is connected to the upper and lower inlet holes, allowing water to flow into it. The lower end of the vertical feed channel is connected to the sedimentation tank. The vertical feed channel is equipped with an inclined filter plate with filter holes. The vertical feed channel has a coarse crushed stone outlet aligned with the bottom end of the filter plate. The coarse crushed stone outlet is connected to the inlet of a coarse crushed stone receiving hopper. The coarse crushed stone receiving hopper has a coarse crushed stone discharge port. A water distribution chamber is located around the vertical feed channel. The inlets of the upper and lower spray holes are connected to the water distribution chamber. The water distribution chamber is connected to the outlet of a water pump. The inlet of the water pump is connected to a clean water source. During the process of crushed stone falling through the vertical material channel, the dust adhering to the four sides of the crushed stone (top, bottom, left, and upper right) is sprayed away by water sprayed backward from the upper nozzle. The dust then enters the upper water inlet and reaches the sedimentation tank along with the water. The dust on the front side of the crushed stone is washed down and falls off. The dust adhering to the four sides of the crushed stone (top, bottom, front, and back) is sprayed away by water sprayed to the left from the lower nozzle. The dust then enters the lower water inlet and reaches the sedimentation tank along with the water. The dust on the rear side of the crushed stone is washed down and falls off. The washed crushed stone falls onto the filter plate in the channel section, the water falls into the sedimentation tank, and the crushed stone rolls to the coarse crushed stone outlet, reaches the coarse crushed stone receiving hopper, and is then output from the coarse crushed stone discharge port.After sedimentation in the sedimentation tank, the dust is removed and dried from the form of sludge. The crushed stone washing waste residue recycling device also includes an upper screen plate to receive the crushed stone output from the discharge port. The upper screen plate is inclined, with its high end located below the discharge port and its low end located above the vertical material channel, so that the crushed stone under the rollers on the upper screen plate falls into the vertical material channel. A receiving chamber is provided below the upper screen plate, with its bottom wall inclined and equipped with dust dropping holes. A spray head is provided at the high end of the bottom wall of the receiving chamber, spraying towards the low end of the bottom wall of the receiving chamber. The crushed stone washing waste residue recycling device also includes a fine crushed stone receiving hopper aligned with the low end of the bottom wall of the receiving chamber to receive the crushed stone rolling off the bottom wall of the receiving chamber. The dust falling through the dust dropping holes falls into the sedimentation tank. The opening area of ​​the sieve holes in the upper sieve plate is larger than the opening area of ​​the dust collection holes; it also includes an external discharge channel, the vertical discharge channel is located inside the external discharge channel, the three walls of the external discharge channel form the walls of the vertical discharge channel, one side wall of the external discharge channel is inclined and connected to the lower end of the upper sieve plate and the vertical discharge channel, the side wall of the external discharge channel is provided with several air blowing holes, the inlet end of the air blowing holes is connected to the air distribution chamber, the air distribution chamber is aligned with the outlet end of the blower, the wall of the discharge channel opposite to the side wall of the external discharge channel is provided with an air suction port, the air suction port is connected to the inlet end of the blower, the air suction port is provided with a dust blocking screen, the wall of the discharge channel opposite to the side wall of the external discharge channel and the vertical discharge channel form a dust collection channel whose lower end is connected to the sedimentation tank.

2. The method for producing crushed stone according to claim 1, characterized in that, It also includes a loading platform that a truck can drive onto, located next to the vibrating feeder; when the truck is on the loading platform with its rear facing the vibrating feeder, the goods on the truck bed can be dumped into the feed inlet of the vibrating feeder.

3. A method for producing crushed stone according to claim 1 or 2, characterized in that, The sedimentation tank is equipped with a filter plate in the filtration section, which separates a clear water zone and a turbid water zone above the clear water zone. The clear water zone constitutes the clear water source. The lower ends of the upper water inlet, lower water inlet, and discharge channel are located above the turbid water zone. When using it for the first time, the output of the clear water source is turned off. The dust settles on the filter cloth and filter plate to form a sludge filter layer of a set thickness. Then, the output of the clear water in the clear water zone is turned on, so that the sedimentation tank can use the dust for filtration, which facilitates the circulation and cleaning of water.

4. A method for producing crushed stone according to claim 1 or 2, characterized in that, The air inlet side surface of the dust-blocking mesh is inclined downwards.

5. A method for producing crushed stone according to claim 1 or 2, characterized in that, The fine crushed stone receiving hopper and the coarse crushed stone receiving hopper share the same wall, and the vertical material discharge channel is located between the dust discharge channel and the coarse crushed stone receiving hopper.

6. A method for producing crushed stone according to claim 1 or 2, characterized in that, A resistance-increasing layer is provided on the upper surface of one side wall of the external feeding channel.

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