Waste sand treatment system

Abstract

The waste sand treatment system comprises a sand storage mechanism, a screening mechanism, a first collecting mechanism and a second collecting mechanism, the screening mechanism comprises a mechanism body, a first screening net and a second screening net, and the first screening net and the second screening net are both arranged in an inner cavity of the mechanism body; the first screening net and the second screening net divide an inner cavity of the mechanism body into an upper sub-cavity, a middle sub-cavity and a lower sub-cavity from high to low, the sand storage mechanism is connected to the first end of the mechanism body and communicates with the upper sub-cavity, the first collecting mechanism and the second collecting mechanism are both connected to the second end of the mechanism body, and the first collecting mechanism communicates with the middle sub-cavity. And the second collecting mechanism is communicated with the upper sub-cavity and the lower sub-cavity. According to the method, the qualified sand in the waste sand can be efficiently and accurately separated and recycled on the premise that the final product quality and the overall separation efficiency are not obviously reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sand processing equipment, in particular to a waste sand processing system. Background Art

[0002] In the field of chrome ore processing, chrome ore is an important industrial raw material, and its separation and purification process is of great significance for improving product quality and controlling production costs. Traditionally, the separation of chrome ore mostly adopts multi-stage separation technology. The core of this technology is to use multi-stage screening or separation devices to separate the sand particles step by step according to their physical properties such as size and specific gravity, so as to obtain qualified sand that meets the requirements and remove waste sand that does not meet the standards.

[0003] However, in the current multi-stage separation process, the waste sand generated after each stage of separation is often regarded as worthless material and directly discharged. Although this treatment method is simple to operate, it ignores the fact that the waste sand may still contain a certain proportion of qualified sand or reusable components. Through further testing, it was found that a certain amount of sand particles that meet the use standards are hidden in the waste sand. The direct discharge of these sand particles not only causes a huge waste of resources, but also increases the operating costs and environmental burden of enterprises.

[0004] In addition, in order to try to reduce the content of qualified sand in waste sand, some companies and researchers have tried to optimize the separation effect by adjusting the parameters of chrome ore sand separation equipment, such as sand layer thickness, separation plate angle, etc. However, this adjustment often faces a dilemma: on the one hand, fine-tuning of parameters may improve the recovery rate of qualified sand in waste sand to a certain extent, but it may also have an adverse effect on the quality of the final product and the overall separation efficiency, such as uneven distribution of chrome ore sand particle size, decreased separation accuracy or reduced output; on the other hand, if the parameters are not adjusted, the problem of resource waste caused by direct waste discharge will still not be solved.

[0005] In summary, the existing chromium ore separation technology has significant resource waste and efficiency bottlenecks when treating waste sand. There is an urgent need for a method or equipment that can efficiently and accurately separate and recover qualified sand from waste sand to maximize the utilization of chromium ore resources while reducing production costs and environmental impact.

[0006] Technical issues

[0007] Based on this, it is necessary to provide a waste sand treatment system to solve the problem of how to achieve efficient and accurate separation and recovery of qualified sand in waste sand without significantly reducing the quality of the final product and the overall separation efficiency.

[0008] Technical Solutions

[0009] In order to solve the above problems, the present invention adopts the following technical solutions:

[0010] An embodiment of the present invention discloses a waste sand processing system, including a sand storage mechanism, a screening mechanism, a first collecting mechanism and a second collecting mechanism, the screening mechanism including a mechanism body, a first screening net and a second screening net, the first screening net and the second screening net are both arranged in the inner cavity of the mechanism body, and the first screening net and the second screening net divide the inner cavity of the mechanism body from high to low into an upper chamber, a middle chamber and a lower chamber, the sand storage mechanism is connected to the first end of the mechanism body and communicates with the upper chamber, the first collecting mechanism and the second collecting mechanism are both connected to the second end of the mechanism body, and the first collecting mechanism is communicated with the middle chamber, and the second collecting mechanism is communicated with the upper chamber and the lower chamber.

[0011] In one embodiment, the screening mechanism further includes a support member, the mechanism body is a columnar structure, and the mechanism body is transversely arranged on the support member, and the first screening net and the second screening net both extend from the first end toward the second end.

[0012] In one embodiment, the first sieve net and the second sieve net are both obliquely disposed in the mechanism body, and are both inclined downward from the first end toward the second end.

[0013] In one of the embodiments, the screening mechanism further includes a vibrating member, and the vibrating member is disposed on the mechanism body.

[0014] In one of the embodiments, the mechanism body is elastically disposed on the support member.

[0015] In one embodiment, the sand storage mechanism includes a first sand storage hopper, a second sand storage hopper and a sand-generating pipe, the first sand storage hopper is connected to the mechanism body, the second sand storage hopper is connected to the lower sand port, and the first sand storage hopper and the second sand storage hopper are connected through a sand-generating pipe.

[0016] In one embodiment, the sand storage mechanism further includes a sending tank, and the sending tank is connected between the first sand storage hopper and the second sand storage hopper.

[0017] In one of the embodiments, the first sand storage hopper is flexibly connected to the mechanism body.

[0018] In one embodiment, both the first sand storage hopper and the second sand storage hopper are provided with a material level detection member.

[0019] Beneficial Effects

[0020] In the waste sand treatment system disclosed in the embodiment of the present invention, by adopting the design of a double-layer screening net, i.e., a first screening net and a second screening net, the internal space of the screening mechanism is effectively divided into three areas, thereby realizing multi-stage screening of waste sand. This design greatly improves the accuracy and efficiency of screening, and can more finely distinguish between usable sand and unusable sand in waste sand. This process not only simplifies the complexity of waste sand treatment, but also significantly improves the recycling rate of resources. In traditional methods, waste sand is often simply discharged, and the usable sand resources therein are wasted in large quantities. The system of the present invention can maximize the recovery of these usable sands, reducing the raw material costs of the enterprise. At the same time, since unnecessary emissions are reduced, the pollution burden on the environment is also reduced, which is in line with the current concept of green production and sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the waste sand treatment system disclosed in an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 100-sand storage mechanism, 110-first sand storage hopper, 120-second sand storage hopper, 130-sand delivery pipeline, 140-sending tank, 200-screening mechanism, 210-mechanism body, 211-upper chamber, 212-middle chamber, 213-lower chamber, 220-first screening net, 230-second screening net, 240-support, 300-first collecting mechanism, 400-second collecting mechanism, 500-detection mechanism. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0025] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a centered element at the same time. The terms "vertical", "horizontal", "left", "right", "top", "bottom", "bottom end", "top end" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] like Figure 1 As shown, an embodiment of the present invention discloses a waste sand processing system, including a sand storage mechanism 100, a screening mechanism 200, a first collecting mechanism 300 and a second collecting mechanism 400.

[0028] The sand storage mechanism 100 is the starting point of the system. The sand storage mechanism is responsible for storing the waste sand to be processed and has the function of conveying the waste sand to the screening mechanism. The waste sand is conveyed into the upper chamber 211 of the screening mechanism by some means (such as automatic conveyor belt, pneumatic conveying, etc.) to provide raw materials for subsequent screening operations.

[0029] The screening mechanism 200 is the core component of the entire system, including the main body 210 and the first screening net 220 and the second screening net 230 arranged in the inner cavity thereof. The two layers of screening nets divide the inner cavity of the main body 210 of the mechanism into three areas from top to bottom: the upper chamber 211, the middle chamber 212 and the lower chamber 213. After the waste sand enters the upper chamber 211, it is firstly screened by the first screening net 220. The larger particles of sand are retained in the upper chamber 211, and the medium-sized sand passes through the first screening net 220 and falls into the middle chamber 212, while the finer sand particles and impurities continue to pass through the second screening net 230 and enter the lower chamber 213. This design realizes multi-stage screening of waste sand, effectively improving the screening accuracy and efficiency.

[0030] The first collecting mechanism 300 is connected to the middle separation chamber 212 and is specifically responsible for collecting the usable sand that meets certain particle size requirements and remains after preliminary screening in the middle separation chamber 212. These usable sands can be directly reused in production after further processing, thus maximizing the utilization of resources.

[0031] The second collecting mechanism 400 is connected to the upper chamber 211 and the lower chamber 213, and is used to collect the unusable sand screened in the two chambers. The unusable sand may include oversized or undersized particles, impurities, etc., which will be collected and subsequently processed or disposed.

[0032] It can be seen from the above that in the waste sand treatment system disclosed in the embodiment of the present invention, by adopting the design of a double-layer screening net, namely the first screening net 220 and the second screening net 230, the internal space of the screening mechanism 200 is effectively divided into three areas, thereby realizing multi-stage screening of waste sand. This design greatly improves the accuracy and efficiency of screening, and can more finely distinguish between usable sand and unusable sand in waste sand. This process not only simplifies the complexity of waste sand treatment, but also significantly improves the recycling rate of resources. In traditional methods, waste sand is often simply discharged, and the usable sand resources therein are wasted in large quantities. The system of the present invention can maximize the recovery of these usable sands, reducing the raw material costs of the enterprise. At the same time, since unnecessary emissions are reduced, the pollution burden on the environment is also reduced, which is in line with the current concept of green production and sustainable development.

[0033] In the embodiment of the present invention, the screening mechanism 200 further includes a support member 240, the mechanism body 210 is a columnar structure, and the mechanism body 210 is transversely arranged on the support member 240, and the first screening net 220 and the second screening net 230 both extend from the first end toward the second end. Specifically, the screening mechanism 200 is composed of the mechanism body 210, the first screening net 220, the second screening net 230 and the support member 240. The mechanism body 210 is designed as a columnar structure, which is transversely arranged on the support member 240. This layout not only ensures the overall stability of the screening mechanism, but also facilitates the smooth flow of waste sand during the screening process.

[0034] The first screening net 220 and the second screening net 230 are key components of the screening mechanism, and both extend from the first end of the mechanism body 210 toward the second end. This design allows the waste sand to be graded and screened through two layers of screening nets in sequence after entering the screening mechanism. Specifically, the waste sand first contacts the first screening net 220. After preliminary screening, the sand particles that meet the specific particle size requirements pass through the screen and fall into the middle chamber 212 below, while the sand particles that do not meet the requirements are retained in the upper chamber 211. Subsequently, the sand particles in the middle chamber 212 continue to flow downward, and after further screening by the second screening net 230, the finer sand particles and impurities are finally separated into the lower chamber 213.

[0035] During the entire screening process, the support member 240 provides a solid support platform for the mechanism body 210 and its internal components, ensuring the stability and reliability of the screening mechanism during operation. At the same time, the extended design of the screening net makes full use of the screening area, improving the screening efficiency and processing capacity.

[0036] Furthermore, the first screening net 220 and the second screening net 230 can be arranged obliquely in the main body 210 of the mechanism, and the first screening net 220 and the second screening net 230 can be inclined downward from the first end toward the second end. The original intention of the design of this inclined setting is to promote the smooth flow of sand. When the waste sand is fed into the screening mechanism 200, due to the inclination angle of the screening net, the sand can naturally flow downward along the surface of the screen while receiving the screening effect of the screening net. This process not only reduces the accumulation and retention of sand during the screening process, but also speeds up the screening speed and improves the screening efficiency.

[0037] Specifically, the waste sand first enters the upper chamber 211 of the screening mechanism 200, and then begins to flow downward along the first screening net 220 under the action of gravity and the inclined screen. In this process, the sand particles with larger particle sizes are intercepted by the first screening net 220, while the sand particles with smaller particle sizes pass through the screen and fall into the middle chamber 212. Then, the sand particles in the middle chamber 212 continue to flow downward along the second screening net 230 to undergo further screening. Finally, the finer sand particles and impurities pass through the second screening net 230 and enter the lower chamber 213, while the usable sand that meets the requirements remains in the middle chamber 212, waiting to be collected by the first collection mechanism 300.

[0038] In addition, the tilted screen helps improve the screening accuracy. Since the sand always maintains a certain flow speed during the screening process, it can contact the screen surface more fully, increasing the screening effect. At the same time, the tilt angle of the screen can also be adjusted according to actual needs to meet the needs of processing waste sand of different particle sizes and properties.

[0039] In the embodiment of the present invention, the screening mechanism 200 may further include a vibrator, which may be disposed on the mechanism body 210. In this case, the vibrator is cleverly disposed on the mechanism body 210, and its function is to generate periodic vibrations during the screening process, thereby driving the screening net and the sand on the screen to vibrate at high frequency.

[0040] This vibration has a significant impact on the screening process. First, vibration can break the static friction between the sand, making it easier for the sand to form a dynamic flow layer on the screen, thereby accelerating the speed of sand passing through the screen and improving screening efficiency. Secondly, vibration can also help shake off the sand or impurities adhering to the screen, reduce the blockage of the screen, and keep the screening net unobstructed. Finally, vibration can also enhance the screening effect, allowing the sand to more fully contact the screen surface during the vibration process, improving the accuracy and quality of screening.

[0041] Furthermore, the mechanism body 210 can be elastically arranged on the support member 240. Specifically, the mechanism body 210, as the main part of the screening mechanism 200, is no longer just rigidly fixed on the support member 240, but can be connected to the support member 240 through some elastic connection device (such as a spring, a rubber pad, etc.). This elastic setting enables the mechanism body 210 to produce a certain elastic deformation and displacement when subjected to the vibration generated by the vibrating member, thereby enhancing the dynamic effect during the screening process.

[0042] When the vibrating element starts to work, the vibrations it generates are first transmitted to the mechanism body 210. Due to the elastic connection between the mechanism body 210 and the support element, these vibrations are converted into tiny vibrations and displacements of the mechanism body 210. The superposition of such vibrations and displacements causes the screening net and the sand on the screen to be subjected to more complex and diverse forces, thereby promoting the flow and screening of the sand.

[0043] On the one hand, the elastic setting enables the screen to produce a certain amplitude and frequency change during the vibration process. This change helps to break the static friction between the sand, making it easier for the sand to form a dynamic flow layer on the screen, thereby improving the screening efficiency. On the other hand, the elastic setting can also reduce the impact and damage of vibration on other parts of the system, thereby improving the stability and durability of the system.

[0044] In addition, due to the elastic setting of the mechanism body 210, the entire screening mechanism 200 will present a "flexible screening" state during the vibration process. This state makes the screening process softer and more uniform, helps to reduce the breakage and wear of the sand, and protects the integrity and quality of the sand.

[0045] In an optional embodiment, the sand storage mechanism 100 may include a first sand storage hopper 110, a second sand storage hopper 120 and a sand emission pipe 130, the first sand storage hopper 110 may be connected to the mechanism body 210, the second sand storage hopper 120 may be connected to the lower sand port, and the first sand storage hopper 110 and the second sand storage hopper 120 may be connected through the sand emission pipe 130. Among them, the first sand storage hopper 110 may be designed to be open at the top, and the bottom is connected to the mechanism body 210, so that sand can be added from the top and smoothly fall into the inside of the mechanism body 100. The mechanism body 210 is the support and connection part of the entire sand storage mechanism 200, and its design needs to ensure the stability of the structure and the reliability of the connection.

[0046] The second sand storage hopper 120 can be located on the side of the first sand storage hopper 110, and can be connected to the sand outlet of the sand generating system or other receiving equipment, so as to receive and temporarily store the sand material dropped from the sand generating system or other receiving equipment. The design of the second sand storage hopper 120 needs to consider its capacity and receiving efficiency to meet actual production needs.

[0047] The first sand storage hopper 110 and the second sand storage hopper 120 are connected through the sand generating pipeline 130. The design of the sand generating pipeline 130 needs to ensure that the sand can flow smoothly from one sand storage hopper to another sand storage hopper. Considering the need to control the flow of sand, a regulating valve or a flow meter and other devices can be set in the pipeline. In addition, the layout of the sand generating pipeline 130 should be flexible and diverse to adapt to different production environments and process requirements.

[0048] In order to further improve the automation and control accuracy of the sand storage mechanism, the present invention can also add a valve for automatically controlling the opening and closing of the sand-generating pipeline 130 or a related position. The valve can automatically adjust the opening degree or realize the opening and closing control according to the production demand, so as to realize the precise control of the sand material flow. By integrating advanced control systems and sensor technologies, the sand storage mechanism can also realize functions such as remote monitoring and fault diagnosis, thereby improving production efficiency and the convenience of equipment maintenance.

[0049] Further, the sand storage mechanism 100 may further include a sending tank 140, and the sending tank 140 may be connected between the first sand storage hopper 110 and the second sand storage hopper 120. Specifically, the sending tank 140 is designed as an independent container that can be connected between the first sand storage hopper 110 and the second sand storage hopper 120. The upper part thereof may be connected to the second sand storage hopper 120 through a pipeline or a valve, and the lower part thereof may be connected to the second sand storage hopper 110. The sending tank 140 may be equipped with a stirring device or a power device such as a pneumatic / hydraulic pressure device to provide the power required for sand transportation.

[0050] During operation, when the sand in the second sand storage hopper 120 accumulates to a certain amount, the sand can be introduced into the sending tank 140 by controlling the valve. Subsequently, the power device in the sending tank 140 is started to transport the sand to the first sand storage hopper 110 through the pipeline at a certain speed and pressure. Due to the buffering effect of the sending tank 140, the stability and continuity of the sand transportation process can be ensured, and problems such as blockage or unstable flow caused by the sudden drop of a large amount of sand can be avoided.

[0051] In the embodiment of the present invention, the first sand storage hopper 110 can be flexibly connected to the mechanism body 210. In this case, the first sand storage hopper 110 may be subjected to greater impact and vibration during the falling process of the sand material. The flexible connection can effectively absorb these impacts and vibrations, reducing damage to the mechanism body 210 and the entire sand storage mechanism 100. At the same time, the flexible connection allows a certain installation error and displacement space between the first sand storage hopper 110 and the mechanism body 210. This enables the sand storage mechanism 100 to maintain a good working state under different installation environments and conditions, and improves its adaptability and reliability.

[0052] In the embodiments disclosed in the present invention, both the first sand storage hopper 110 and the second sand storage hopper 120 can be provided with a material level detection component 500. In this case, the material level detection component 500 can monitor the amount of sand in the sand storage hopper in real time and accurately, and provide reliable data support for the automatic control of the sand storage mechanism. By real-time monitoring of the amount of sand, the storage state of the sand can be accurately grasped to avoid the adverse effects of too much or too little sand on production. At the same time, through the material level detection component 500, the situation of insufficient sand in the sand storage hopper can be discovered in time, and the corresponding replenishment mechanism can be triggered, such as starting the conveying equipment to replenish the sand in the sand storage hopper. In this way, the continuity and stability of the sand supply can be ensured, and production interruptions caused by shortage of sand can be avoided, thereby improving production efficiency.

[0053] The material level detector 500 can also help prevent sand from overflowing or accumulating too much. When the sand in the sand storage hopper reaches the preset upper limit, the detector will send a signal to prompt the operator or the automatic control system to take corresponding measures, such as stopping the conveying or opening the sand discharge device, to avoid sand waste and environmental pollution. In some cases, excessive sand or improper accumulation may cause safety hazards, such as structural overload and collapse. The setting of the material level detector 500 helps to detect and deal with these problems in a timely manner, ensuring the safety of the sand storage mechanism and the surrounding environment.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A waste sand treatment system, characterized in that: The invention comprises a sand storage mechanism (100), a screening mechanism (200), a first collecting mechanism (300) and a second collecting mechanism (400); the screening mechanism (200) comprises a mechanism body (210), a first screening net (220) and a second screening net (230); the first screening net (220) and the second screening net (230) are both arranged in the inner cavity of the mechanism body (210); and the first screening net (220) and the second screening net (230) divide the inner cavity of the mechanism body (210) from high to low into an upper cavity and a lower cavity. The sand storage mechanism (100) is connected to a first end of the mechanism body (210) and is in communication with the upper chamber (211); the first collecting mechanism (300) and the second collecting mechanism (400) are both connected to the second end of the mechanism body (210); the first collecting mechanism (300) is in communication with the middle chamber (212); and the second collecting mechanism (400) is in communication with the upper chamber (211) and the lower chamber (213).

2. The waste sand treatment system according to claim 1, characterized in that: The screening mechanism (200) further comprises a support member (240); the mechanism body (210) is a columnar structure, and the mechanism body (210) is transversely arranged on the support member (240); and the first screening net (220) and the second screening net (230) both extend from the first end portion toward the second end portion.

3. The waste sand treatment system according to claim 2, characterized in that: The first screening net (220) and the second screening net (230) are both arranged obliquely in the mechanism body (210), and are both inclined downwardly from the first end toward the second end.

4. The waste sand treatment system according to claim 2, characterized in that: The screening mechanism (200) further comprises a vibrating member, wherein the vibrating member is arranged on the mechanism body (210).

5. The waste sand treatment system according to claim 4, characterized in that: The mechanism body (210) is elastically arranged on the support member (240).

6. The waste sand treatment system according to claim 1, characterized in that: The sand storage mechanism (100) comprises a first sand storage hopper (110), a second sand storage hopper (120) and a sand generating pipe (130); the first sand storage hopper (110) is connected to the mechanism body (210); the second sand storage hopper (120) is connected to a lower sand port; and the first sand storage hopper (110) and the second sand storage hopper (120) are connected via the sand generating pipe (130).

7. The waste sand treatment system according to claim 6, characterized in that: The sand storage mechanism (100) further comprises a sending tank (140), wherein the sending tank (140) is connected between the first sand storage hopper (110) and the second sand storage hopper (120).

8. The waste sand treatment system according to claim 6, characterized in that: The first sand storage hopper (110) is flexibly connected to the mechanism body (210).

9. The waste sand treatment system according to claim 6, characterized in that: The first sand storage hopper (110) and the second sand storage hopper (120) are both provided with a material level detection component (500).

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