A system for processing recycled sand powder

Abstract

The utility model discloses a kind of regenerated sand powder processing systems, in turn including feed lifting system, material conveying system and grinding system, the grinding system includes casing, the grinding assembly in the bottom of casing and the separation assembly in the top of casing, grinding assembly includes grinding roller, hydraulic device, grinding disc and first driving device, the telescopic end of hydraulic device is connected with the support end of grinding roller and can adjust the grinding pressure control of grinding roller discharge granularity;The regenerated sand powder processing system of the utility model adjusts the grinding pressure control of grinding roller by hydraulic device, the discharge granularity of grinding system, and the adjustment process is simple, strong and accurate, can satisfy different application requirements, solve the problem of the finished product application range of system.

Description

Technical Field

[0001] This utility model relates to the field of waste recycling, specifically to a recycled sand and powder processing system. Background Technology

[0002] In the context of rapid modern industrial development, global environmental awareness is increasing, and countries are strengthening the formulation and enforcement of environmental regulations. Large quantities of industrial waste and construction debris, if not properly disposed of, will cause serious pollution to soil, water, and air, placing enormous pressure on the ecological environment. At the same time, the demands of all sectors of society for waste disposal are becoming increasingly stringent, and traditional high-pollution, high-energy-consuming waste treatment methods are no longer sufficient to meet the needs of sustainable development.

[0003] In this context, recycled sand and powder processing systems have emerged as a new type of environmentally friendly waste treatment technology. Through a specific process, this system can transform various waste materials, such as concrete blocks and bricks from construction waste, and slag and furnace slag from industrial waste, into recycled sand and powder products with specific properties and uses. These recycled sand and powder products can be widely used in construction, road engineering, concrete product manufacturing, and other fields, realizing the resource utilization of waste materials. This aligns with the current concepts of circular economy and green development, and has significant environmental and economic benefits.

[0004] However, existing recycled sand and powder processing systems are prone to wear and tear during long-term operation, requiring regular maintenance and replacement. This not only increases the company's operating costs but may also affect the continuity and efficiency of the production line due to equipment downtime, reducing overall economic benefits. In the process of recycled sand and powder processing, the particle size of the material produced by the grinding device needs to be adjusted according to different application requirements. Currently, most recycled sand and powder processing systems use manual adjustment to adjust the particle size of the output particles of the grinding device. The adjustment process is cumbersome, complex, and unstable, resulting in unstable content of sand and powder particles of the target particle size in the finished product. Utility Model Content

[0005] The purpose of this invention is to overcome the problems of high maintenance costs and inconvenient particle size adjustment in existing recycled sand and powder processing equipment, and to provide a highly efficient and easy-to-maintain recycled sand and powder processing system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The first aspect of this utility model is to provide a recycled sand powder processing system, which sequentially includes a feeding and lifting system, a conveying system, and a grinding system, wherein the grinding system includes...

[0008] The casing has a first inlet and a first outlet at its top;

[0009] The grinding assembly includes a grinding roller, a hydraulic device, a grinding disc, and a first drive device. The grinding disc is rotatably mounted on the bottom of the housing. The first drive device is fixed to the outside of the bottom of the housing and connected to the main shaft of the grinding disc to drive the grinding disc to rotate. The grinding roller has a grinding end and a support end. The grinding end is located inside the housing and above the grinding disc to form a grinding zone. The support end extends to the outside of the housing. The hydraulic device is fixed to the outside of the housing. The telescopic end of the hydraulic device is connected to the support end and can adjust the grinding pressure of the grinding roller to control the output particle size.

[0010] The separation component includes a separator, a transmission component, and a second drive device. The separator is located at the top of the casing and has an air ring composed of arc-shaped guide vanes inside it. The second drive device is fixed to the outside of the top of the casing and connected to the air ring through the transmission component. It is used to drive the air ring to rotate, and the rotation of the air ring generates a spiral upward airflow, forming a separation zone above the grinding zone. The ground material is carried into the separation zone by the upward airflow. The qualified fine powder is discharged through the first discharge port with the airflow, and the coarse powder falls back into the grinding zone for recycling.

[0011] Furthermore, a receiving hopper is provided below the separator, the lower part of the receiving hopper has a conical receiving section, and the upper part of the receiving hopper is connected to the machine casing through multiple rod-shaped connectors.

[0012] Furthermore, the first driving device includes a first driving motor and a reducer. The output shaft of the first driving motor is connected to the input shaft of the reducer via a coupling, and the output shaft of the reducer is connected to the grinding disc spindle.

[0013] Furthermore, the hydraulic device includes a hydraulic station, the output end of which is provided with a hydraulic rod, the telescopic end of which is connected to an adjusting rod, and the other end of the adjusting rod is hinged to the support end.

[0014] Furthermore, the second drive device is a speed-adjustable drive device. By adjusting the speed of the second drive device to adjust the speed of the air ring, the discharge particle size of the first discharge port can be further adjusted.

[0015] An adjustable speed drive device is used as the second drive device to drive the air ring to rotate. By coordinating the adjustment of the air ring speed (controlled by the second drive device) and the adjustment of the grinding pressure of the grinding roller (controlled by the hydraulic device), the discharge particle size of the first discharge port can be adjusted, which can expand the control range of the discharge particle size, improve the stability of the finished product, and ensure the content of target particle size sand powder in the finished product.

[0016] Furthermore, the feeding and lifting system is a bucket elevator, which has a second feed inlet at the bottom and a second discharge outlet at the top.

[0017] Furthermore, the material conveying system includes a buffer device and a feeding device. The buffer device includes a buffer chamber with a third inlet at the top and a third outlet at the bottom. A discharge control valve is provided at the third outlet. The feeding device is a vibrating feeder, which is fixed below the third outlet by a bottom support device. The output end of the vibrating feeder is connected to the first inlet.

[0018] Furthermore, the recycled sand and powder system also includes a dust removal system, which includes an air inlet pipe assembly, a dust collector, and a blower assembly. The air inlet pipe assembly is installed at the third discharge port, the first feed port, and the first discharge port and is connected to the dust collector. The dust collector is equipped with a dust collection bag and a dust discharge port at the bottom. The blower assembly includes a negative pressure pipe, a blower, and an air outlet pipe. The negative pressure pipe connects the top of the dust collector to the air intake of the blower, and the air outlet pipe extends from the exhaust port of the blower to the outside.

[0019] The installation of a dust removal system can effectively reduce the emission of dust pollutants during the operation of the recycled sand and powder system, promote cleaner production, and reduce the impact on the environment.

[0020] Furthermore, the buffer chamber is equipped with a material distribution plate to slow down the falling speed of materials.

[0021] Furthermore, the feeding control valve is a push-pull valve.

[0022] Furthermore, the regenerated sand powder system also includes a thin oil lubrication system.

[0023] Compared with the prior art, the present invention has at least the following beneficial effects:

[0024] 1. Rapid repair and reduced downtime: The recycled sand powder processing system provided by this utility model can achieve rapid and accurate repair of the grinding system. When the grinding system has a problem, the hydraulic device can assist maintenance personnel in quickly locating the fault, achieving accurate repair, and reducing the time cost of maintenance and replacement of damaged parts.

[0025] 2. Efficient and precise adjustment of grinding system parameters: The recycled sand powder processing system provided by this utility model controls the output particle size of the grinding system by adjusting the grinding pressure of the grinding roller through a hydraulic device. The adjustment process is simple, stable and accurate, which can meet different application requirements and solve the problem of the applicability range of the system's finished products. Attached Figure Description

[0026] Figure 1 This is a schematic diagram illustrating the working principle of the recycled sand powder processing system of this utility model.

[0027] Figure 2 This is a schematic diagram of the buffer device in Example 1.

[0028] Figure 3 This is a schematic diagram of the material control valve in Example 1.

[0029] Figure 4 This is a schematic diagram of the grinding system in Example 1.

[0030] Figure 5 This is a schematic diagram of the air ring structure in Example 1.

[0031] Figure 6 This is a schematic diagram illustrating the working principle of the thin oil lubrication system in Example 1.

[0032] Figure 7 This is a schematic diagram of the dust removal system in Example 1.

[0033] In the diagram: 10 - Bucket elevator; 11 - Second feed inlet; 12 - Second discharge outlet;

[0034] 20-Buffer device; 21-Buffer bin; 211-Distribution plate; 212-Third feed inlet; 213-Third discharge outlet; 214-Discharge control valve; 2141-Handle; 2142-Threaded bolt rod; 2143-Baffle; 2144-Control valve steel frame; 215-Reinforcing rib;

[0035] 30 - Vibrating feeder; 31 - Bottom support device;

[0036] 40-Grinding system; 41-Machine housing; 42-First feed inlet; 43-First discharge outlet; 44-Grinding roller; 441-Grinding end; 442-Support end; 45-Hydraulic station; 46-Hydraulic rod; 47-Adjusting rod; 48-Grinding disc; 481-Grinding disc spindle; 49-First drive motor; 410-Reducer; 411-Coupling; 412-Separator; 4121-Air ring; 4122-Arc-shaped guide vane; 4123-Air ring spindle; 4124-Pulley; 413-Second drive device; 414-Collection hopper; 415-Rod-shaped connector;

[0037] 50 - Dust removal system; 51 - Air inlet duct assembly; 52 - Dust collector; 521 - Dust outlet; 53 - Negative pressure pipeline; 54 - Blower; 55 - Air outlet duct; 56 - Rain cap;

[0038] 60-Thin oil lubrication system; 61-Oil pump; 62-Oil tank; 63-Oil delivery pipeline; 631-Oil valve; 64-Oil return pipeline; 641-Oil cooling device. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to specific implementation methods and embodiments. It should be understood that the following embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Some non-substantial improvements and adjustments made by those skilled in the art based on the content of the present invention still fall within the scope of protection of the present invention.

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0045] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] Example 1

[0047] See Figure 1 This embodiment provides a recycled sand powder processing system, including a feeding and lifting system, a conveying system, a grinding system 40 and a thin oil lubrication system 60, wherein the conveying system includes a buffer device 20 and a vibrating feeder 30;

[0048] See also Figure 1 In this embodiment, the feeding and lifting system is a bucket elevator 10, which has a second feed inlet 11 at the bottom and a second discharge outlet 12 at the top; the buffer device 20 includes a buffer bin 21, which has a third feed inlet 212 at the top and a third discharge outlet 213 at the bottom, and the third feed inlet 212 is connected to the second discharge outlet 11; see also Figure 2 The buffer chamber 21 is equipped with multiple material distribution plates 211, which are welded to the inner wall of the buffer chamber 21 at different inclination angles. This ensures that the falling speed of the material is slowed down after entering the buffer chamber 21, while reducing the impact force of the material on the inner wall of the buffer chamber 21 (to a certain extent reducing noise generation) and reducing the wear of the inner wall of the buffer chamber 21 to extend the service life of the buffer device 20.

[0049] See Figures 2-3 A discharge control valve 214 is provided at the third discharge port 213 to control the discharge flow rate of the buffer device 20. The discharge control valve 214 includes a control valve steel frame 2144, a baffle 2143, a bolt threaded rod 2142, and a handle 2141. The control valve steel frame 2144 provides structural support and installation foundation, and has predetermined strength and rigidity to withstand the pressure and impact during the discharge process. Reinforcing ribs 215 are provided on both sides of the control valve steel frame 2144. The baffle 2143 is located at the control... The valve steel frame 2144 is adapted to the inner wall of the control valve steel frame 2144, and its position can be adjusted within the control valve steel frame 2144 to control the material flow rate; the bolt thread rod 2142 is bolted and welded to the baffle 2143 to form a stable drive connection structure, and the baffle 2143 can be moved when the bolt thread rod 2142 rotates; the handle 2141 is welded to the end of the bolt thread rod 2142, allowing the operator to rotate the bolt thread rod 2142 to control the position of the baffle 2143.

[0050] See also Figure 1 The vibrating feeder 30 has a feed end and an output end. The bottom of the vibrating feeder 30 is provided with a bottom support device 31, so that the feed end of the vibrating feeder 30 is located below the third discharge port 213, which is used to receive the material falling from the buffer bin 2 and to uniformly and continuously transport the material to the grinding system 40.

[0051] See Figure 1 , Figure 4 The grinding system 40 includes a housing 41, a grinding assembly located at the bottom of the housing 41, and a separation assembly located at the top of the housing 41. The top of the housing 41 has a first feed inlet 42 and a first discharge outlet 43. The grinding assembly includes a grinding roller 44, a hydraulic device, a grinding disc 48, and a first drive device for driving the grinding disc 48 to rotate. The grinding disc 48 is rotatably mounted on the bottom of the housing 41. The first drive device includes a first drive motor 49 fixed to the outside of the bottom of the housing 41 and a reducer 410. The output shaft of the first drive motor 49 is connected to the input shaft of the reducer 410 through a coupling 411. The output shaft of the reducer 410 is connected to the grinding disc spindle 481. The grinding roller 44 has a grinding end 441 and a support end 442, wherein the grinding end 441 is located in the housing. A grinding zone is formed inside the housing 41 and above the grinding disc 48, with the support end 442 extending outside the housing 41. A hydraulic device is used to adjust the grinding pressure of the grinding roller 44 to adjust the discharge particle size at the first discharge port 42. The hydraulic device includes a hydraulic station 45, with a hydraulic rod 46 at the output end. An adjusting rod 47 is connected to the telescopic end of the hydraulic rod 46, and the other end of the adjusting rod 47 is hinged to the support end 442. Adjusting the hydraulic set pressure of the hydraulic device causes the hydraulic station 45 to push the hydraulic rod 46 to extend and retract, causing the adjusting rod 47 to rotate at a fixed point, thus changing the position of the grinding roller 44. This adjusts the distance between the grinding roller 44 and the grinding disc 48, thereby adjusting the grinding pressure and ultimately adjusting the discharge particle size of the grinding system 40. (See also...) Figure 1 , Figures 4-5The separation assembly includes a separator 412, a transmission assembly, and a second drive device 413. The separator 412 is located on the top of the housing 41 and has an air ring 4121 formed by arc-shaped guide vanes 4122 inside it. The second drive device 413 is fixed to the outer side of the top of the housing 41. The transmission assembly includes an air ring main shaft 4123 located on the central axis of the air ring 4121 and a pulley 4124 connecting the air ring main shaft 4123 and the output shaft of the second drive device 413. The second drive device 413 is connected to the air ring main shaft 4123 and the pulley 4124 via the belt. The wheel 4124 is driven to connect with the air ring 4121, which drives the air ring 4121 to rotate and generate a spiral upward airflow, forming a separation zone above the grinding zone. A receiving hopper 414 is provided below the separator 412. The lower part of the receiving hopper 414 has a conical receiving section, and the upper part of the receiving hopper 414 is connected to the top of the casing 41 through multiple rod-shaped connectors 415. The ground material is carried into the separation zone by the upward airflow. The qualified fine powder is discharged through the first discharge port 43 with the airflow, and the coarse powder falls back into the grinding zone along the receiving section of the receiving hopper 414 for recycling and grinding.

[0052] See Figure 1 , Figure 6 The grinding system 40 has multiple lubrication holes (not shown in the figure) on its grinding components and vulnerable parts. The thin oil lubrication system 60 includes an oil pump 61, an oil tank 62, an oil delivery pipe 63, and a return oil pipe 64. The oil pump 61 is connected to the oil tank 62. The multiple lubrication holes on the grinding components and vulnerable parts of the grinding system 40 are connected to the oil tank 62 through the oil delivery pipe 63. An oil valve 631 is installed on the oil delivery pipe 63 to control the flow direction and flow rate of the lubricating oil. An oil cooling device 641 is installed on the return oil pipe 64 to cool the returning lubricating oil. The cooled oil is then transported back to the oil tank 62 for recirculation.

[0053] When the recycled sand and powder processing system is working, the material to be processed enters the bucket elevator 10 through the second feed inlet 11, is lifted to the required height by the bucket elevator 10, and then discharged from the second discharge outlet 12. It then enters the buffer bin 21 through the third feed inlet 212, where the falling speed is slowed by the action of multiple distribution plates 211. The bolt thread rod 2142 is rotated by the lever 2141 to move the baffle 2143, controlling the opening of the discharge control valve 214 to discharge the material. The material then falls through the third discharge outlet 213 into the feed end of the vibrating feeder 30. Under the action of the vibrating feeder 30, it is evenly and continuously conveyed to the first feed inlet 42, and then falls into the grinding area of ​​the grinding system 40. The grinding disc 48 rotates under the action of the first drive motor 49 and the reducer 410, driving the grinding roller 44 to rotate. While the material to be processed is being ground, the second drive device 413 drives the air ring 4121 inside the separator 412 to rotate through the transmission component, generating a spiral upward airflow that forms a separation zone above the grinding zone. The ground material is carried into the separation zone by the upward airflow. Qualified fine powder is discharged through the first discharge port 43 with the airflow, while unqualified coarse powder falls back into the grinding zone for recycling along the receiving part of the receiving hopper 414. When it is necessary to adjust the discharge particle size at the first discharge port 43 (grinding system), the hydraulic setting pressure of the hydraulic device is adjusted. The hydraulic station 45 pushes the hydraulic rod 46 to extend and retract, driving the adjusting rod 47 to rotate at a fixed point, causing the position of the grinding roller 44 to change, thereby adjusting the distance between the grinding roller 44 and the grinding disc 48, adjusting the grinding pressure, and thus adjusting the discharge particle size of the grinding system 40.

[0054] During the operation of the grinding system 40, the oil valve 631 is opened and the oil pump 61 is started. The lubricating oil in the oil tank 62 is delivered to multiple lubrication holes on the grinding components and vulnerable parts of the grinding system 40 by the action of the oil pump 61, thereby reducing the friction of the grinding components and vulnerable parts in the grinding system 40 due to high-power operation, so that the grinding system 40 can work efficiently for a long time. The returned lubricating oil is cooled by the oil cooling device 641 and then sent back to the oil tank 62 through the return oil pipe 64 for recirculation.

[0055] Example 2

[0056] This embodiment sets up a dust removal system based on embodiment 1. Referring to Figure 7, the dust removal system includes an air inlet pipe assembly 51, a dust collector 52, and a blower assembly. The air inlet pipe assembly 51 is installed at the third discharge port 213, the first inlet port 42, and the first discharge port 43 in embodiment 1 and is connected to the dust collector 52. The dust collector 52 is equipped with a dust collection bag (not shown in the figure) and a dust discharge port 521 at the bottom. The blower assembly includes a negative pressure pipe 53, a blower 54, and an air outlet pipe 55. The negative pressure pipe 53 connects the top of the dust collector 52 to the air intake of the blower 54. The air outlet pipe 55 extends from the exhaust port of the blower 54 to the outside. The outlet of the air outlet pipe 55 faces upward and is equipped with a rain cap 5 at its outlet.

[0057] During the operation of the grinding system 40, the blower 54 is turned on, and the blower 54 reduces the internal pressure of the dust collector 52 to a negative pressure state, thereby drawing the dust pollutants generated at the third discharge port 213, the first feed port 42 and the first discharge port 43 during the operation of the grinding system 40 into the dust collector 52. The dust-laden airflow enters the dust collector 52 and is circulated for dust reduction. The dust is filtered through the dust collection bag inside the dust collector 52, and the dust trapped by the dust collector 52 is discharged centrally through the dust discharge port 521. The filtered gas with qualified dust content is discharged through the negative pressure pipe 53 and the air outlet pipe 55 under the action of the blower 54.

[0058] Example 3

[0059] Based on Example 1, this embodiment uses a variable frequency motor as the second drive device 413. The speed of the air ring 4121 can be adjusted by adjusting the speed of the variable frequency motor.

[0060] This embodiment can adjust the discharge particle size of the first discharge port 43 by coordinating the speed adjustment of the air ring 4121 (adjusting the speed of the variable frequency motor 413) and the grinding pressure adjustment of the grinding roller 44 (adjusting the set pressure of the hydraulic device). This not only expands the control range of the discharge particle size and improves the stability of the finished product, but also ensures the content of target particle size sand powder in the finished product.

[0061] Although the present invention has been described in detail above through preferred embodiments, the above embodiments are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. A regenerated sand flour processing system, characterized by, The system comprises, in sequence, a feeding and lifting system, a conveying system, and a grinding system, wherein the grinding system includes... The casing has a first inlet and a first outlet at its top; The grinding assembly includes a grinding roller, a hydraulic device, a grinding disc, and a first drive device. The grinding disc is rotatably mounted on the bottom of the housing. The first drive device is fixed to the outside of the bottom of the housing and connected to the grinding disc spindle to drive the grinding disc to rotate. The grinding roller has a grinding end and a supporting end. The grinding end is located inside the machine housing and above the grinding disc to form a grinding zone. The supporting end extends to the outside of the machine housing. The hydraulic device is fixed to the outside of the machine housing. The telescopic end of the hydraulic device is connected to the supporting end and can adjust the grinding pressure of the grinding roller to control the output particle size. The separation component includes a separator, a transmission component, and a second drive device. The separator is located at the top of the casing and has an air ring composed of arc-shaped guide vanes inside it. The second drive device is fixed to the outside of the top of the casing and connected to the air ring through the transmission component. It is used to drive the air ring to rotate, and the rotation of the air ring generates a spiral upward airflow, forming a separation zone above the grinding zone. The ground material is carried into the separation zone by the upward airflow. The qualified fine powder is discharged through the first discharge port with the airflow, and the coarse powder falls back into the grinding zone for recycling.

2. The regenerated sand dust processing system according to claim 1, wherein, The separator is provided with a receiving hopper below it. The lower part of the receiving hopper has a conical receiving section. The upper part of the receiving hopper is connected to the machine casing through multiple rod-shaped connectors.

3. The recycled sand dust processing system of claim 1, wherein, The first driving device includes a first driving motor and a reducer. The output shaft of the first driving motor is connected to the input shaft of the reducer via a coupling, and the output shaft of the reducer is connected to the grinding disc spindle.

4. The recycled sand dust processing system of claim 1, wherein, The hydraulic device includes a hydraulic station, the output end of which is provided with a hydraulic rod, the telescopic end of which is connected to an adjusting rod, and the other end of the adjusting rod is hinged to the support end.

5. The recycled sand dust processing system of claim 1, wherein, The second drive device is a speed-adjustable drive device. By adjusting the speed of the second drive device, the speed of the air ring can be adjusted, which can further adjust the discharge particle size of the first discharge port.

6. The recycled sand dust processing system of claim 1, wherein, The feeding and lifting system is a bucket elevator, which has a second feed inlet at the bottom and a second discharge outlet at the top.

7. The recycled sand dust processing system of claim 1, wherein The material conveying system includes a buffer device and a feeding device. The buffer device includes a buffer chamber with a third inlet at the top and a third outlet at the bottom. A discharge control valve is provided at the third outlet. The feeding device is a vibrating feeder, which is fixed below the third outlet by a bottom support device. The output end of the vibrating feeder is connected to the first inlet.

8. The recycled sand dust processing system of claim 1, wherein, The recycled sand and powder processing system also includes a dust removal system, which includes an air inlet pipe assembly, a dust collector, and a blower assembly. The air inlet pipe assembly is installed at the third discharge port, the first feed port, and the first discharge port and is connected to the dust collector. The dust collector is equipped with a dust collection bag and a dust discharge port at the bottom. The blower assembly includes a negative pressure pipe, a blower, and an air outlet pipe. The negative pressure pipe connects the top of the dust collector to the air intake of the blower, and the air outlet pipe extends from the exhaust port of the blower to the outside.

9. The recycled sand powder processing system of claim 7, wherein, The buffer chamber is equipped with a material distribution plate to slow down the falling speed of materials.

10. The recycled sand dust processing system of claim 1, wherein, The regenerated sand powder processing system further comprises a thin oil lubrication system.

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