Quartz sand production wastewater recycling treatment device

Abstract

The invention relates to the technical field of wastewater treatment, in particular to a quartz sand production wastewater recycling treatment device which comprises a premixing chamber, a discharging chamber, a mixing assembly, an equipartition unit and a leveling assembly. The materials are subjected to slow turbulent flow stirring in the premixing chamber through rotation of the first turbulent flow plate, the stirring is first-stage stirring, the materials are separated in the discharging chamber and then subjected to small-amplitude mixing stirring, and the stirring is second-stage stirring, so that quartz sand with different particle sizes in the materials is uniformly distributed before the materials are spread on the conveying belt through double stirring, and the material spreading efficiency is improved. The problem that the overall dehydration uniformity and the dehydration effect are finally influenced due to non-uniform water permeability of the distributed material caused by non-uniform particle size distribution is avoided; in addition, by means of the leveling action of a leveling roller in the leveling assembly, the materials are flatly laid on the conveying belt according to the set thickness, it is guaranteed that the whole materials can be evenly dewatered, and the overall operation treatment effect is improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a device for recycling and treating wastewater from quartz sand production. Background Technology

[0002] Quartz sand production is a systematic project from raw ore to high-purity finished sand. Its core lies in the gradual separation of quartz and impurities through a series of physical and chemical processes. In this process, a large amount of wastewater is usually generated. Recycling wastewater is not only an environmental protection requirement, but also an inevitable choice for cost reduction, efficiency improvement and sustainable development. Therefore, the wastewater treatment and reuse process is particularly important.

[0003] Currently, in the wastewater treatment process, the first stage is pretreatment, mainly by sedimentation, which forms reusable supernatant and concentrated sludge at the bottom in the sedimentation tank. The concentrated sludge is then further treated by adding flocculants, followed by core dewatering, and finally dry sludge cake and filtered clear liquid are obtained.

[0004] The core dehydration process described above primarily utilizes filtration equipment. (See attached document.) Figure 8 As shown, during the operation, sludge material is fed onto the conveyor belt on the filter machine and continuously transported by the conveyor belt. During the transport process, the material is vacuum-filtered to finally form dry sludge cake and clear liquid.

[0005] The following problems exist in the existing treatment process: 1. Due to the unstable sludge concentration, uneven particle size distribution and rapid settling of sludge material, coarse and fine particles are easily separated. Therefore, after being fed onto the conveyor belt, some areas have strong permeability and some areas have weak permeability. When uniform vacuum suction filtration is performed, the permeability of the final sludge cake is uneven, which affects the uniformity of overall dewatering and the dewatering effect.

[0006] 2. In the current process of feeding the fabric onto the conveyor belt, the thickness distribution of the material on the conveyor belt is not controlled. This can easily lead to some areas of thicker material and some areas of thinner material. As a result, during vacuum suction, the vacuum will preferentially pass through the thinner areas of the material, making it difficult for the thicker areas of the material to be fully vacuumed. This ultimately results in uneven and poor overall dehydration. Summary of the Invention

[0007] Therefore, it is necessary to provide a wastewater recycling and treatment device for quartz sand production, which aims to solve the problems of the prior art.

[0008] This application provides a wastewater recycling and treatment device for quartz sand production, which is used in conjunction with a vacuum belt filter. The vacuum belt filter includes a mounting base and two front-to-back fixed frames, and includes a premixing chamber. Two left-to-right premixing chambers are fixedly arranged on the left side of the mounting base through the two front-to-back fixed frames. A discharge chamber is fixedly arranged between the two fixed frames, and the discharge chamber is located on the right side of the premixing chamber. Both premixing chambers are connected to the discharge chamber through two front-to-back connecting pipes.

[0009] The premixing chamber is equipped with a mixing component for mixing quartz sand of different particle sizes. The lower end of the feeding chamber is provided with multiple feeding troughs that are equidistantly distributed in front and behind. The feeding chamber is also equipped with a material distribution unit for evenly distributing materials.

[0010] A leveling assembly located on the right side of the unloading chamber is provided between the two fixed frames. The leveling assembly includes a leveling roller rotatably mounted on the two fixed frames, with the axis of the leveling roller extending forward and backward.

[0011] During the feeding process, the mixing components use a slow stirring method to mix different particle sizes of quartz sand in the first stage, and the equalization unit uses a secondary mixing method to mix the material after the first stage. During the spreading process, the material is first evenly and quantitatively fed through multiple feeding troughs in the equalization unit, and then the material is spread evenly on the conveyor belt of the vacuum belt filter by the leveling action of the leveling components.

[0012] According to an advantageous embodiment, the mixing assembly includes a rotating shaft, and three rotating shafts are equidistantly distributed in the premixing chamber. The axis of the rotating shaft is vertical, and a spiral-shaped spoiler is fixedly sleeved on the rotating shaft.

[0013] The adjacent rotating shafts rotate in opposite directions. When the central rotating shaft drives the spoiler to rotate, the spoiler carries the material downwards.

[0014] According to an advantageous embodiment, a layered plate is fixedly provided in the premixing chamber, which divides the premixing chamber into an upper output chamber and a lower mixing chamber.

[0015] The layered plate has two material conveying troughs distributed on the left and right, and the material conveying troughs are located directly above the middle baffle plate.

[0016] According to an advantageous embodiment, the premixing chamber is provided with docking flanges on both the front and rear sides, and both ends of the connecting pipe are connected to the corresponding chambers through the upper end faces of the premixing chamber and the feeding chamber.

[0017] According to an advantageous embodiment, the connecting pipes on different premixing chambers are intermittently staggered, and the connecting pipes are divided into vertical sections, inclined sections and vertical sections from left to right, wherein the inclined sections slope downward from left to right.

[0018] According to an advantageous embodiment, the equalizing unit includes a discharge sleeve, and the lower end face of the discharge chamber is fixedly provided with a discharge sleeve corresponding to the discharge trough. The discharge sleeve is a frustum shape with a smaller top and a larger bottom.

[0019] According to an advantageous embodiment, the lower end face of the feeding chamber is provided with a plurality of recesses corresponding to the feeding grooves. The recesses are recessed from the periphery toward the center of the corresponding feeding grooves. A plurality of partition plates are fixedly provided in the feeding chamber and are distributed at equal intervals in front and behind. The partition plates divide the inner cavity of the feeding chamber into partition cavities corresponding to the feeding grooves.

[0020] According to an advantageous embodiment, the feeding chamber is rotatably provided with two rotating shafts distributed to the left and right and extending forward and backward along their axes. A spiral baffle plate corresponding to the partition cavity is fixedly sleeved on the rotating shaft. The two rotating shafts are respectively connected to corresponding motors, and the two rotating shafts rotate in opposite directions.

[0021] According to an advantageous embodiment, the leveling assembly further includes a lifting seat, and the lifting frames are slidably arranged on the opposite surfaces of the two fixed frames, with the leveling roller rotatably disposed between the two lifting frames.

[0022] The fixed frame is rotatably equipped with a threaded rod with a vertical axis corresponding to the lifting frame. The threaded rod passes through the lifting frame, and the height of the leveling roller is adjusted by manually rotating the threaded rod.

[0023] In summary, the present invention has at least one of the following beneficial effects: In the premixing chamber, the material is slowly stirred by the rotation of the first baffle plate, which is the first stage of stirring. Then, it is further separated and mixed at a small amplitude in the feeding chamber, which is the second stage of stirring. Therefore, the double stirring ensures that the different particle sizes of quartz sand are evenly distributed before the material is laid on the conveyor belt, avoiding the problem of uneven permeability of the material after spreading due to uneven particle size distribution, which ultimately affects the overall dewatering uniformity and dewatering effect.

[0024] In addition, the leveling action of the leveling roller in the leveling assembly allows the material to be spread evenly on the conveyor belt at a set thickness, ensuring that the material can be dehydrated evenly and improving the overall processing efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 A three-dimensional structural schematic diagram of a wastewater recycling and treatment device for quartz sand production according to an embodiment of the present invention is shown.

[0027] Figure 2 A top view schematic diagram of the premixing chamber, feeding chamber, and leveling roller provided according to an embodiment of the present invention is shown.

[0028] Figure 3 A partial cross-sectional perspective view of the three-dimensional structure between the premixing chamber, the layered plate, and the spoiler provided according to an embodiment of the present invention is shown.

[0029] Figure 4 A partial cross-sectional perspective view of the three-dimensional structure between the feeding chamber, the second baffle, and the partition plate provided according to an embodiment of the present invention is shown.

[0030] Figure 5 A partial cross-sectional side view of the material discharge chamber, the second baffle, and the partition plate provided according to an embodiment of the present invention is shown.

[0031] Figure 6 A partial cross-sectional perspective view of the three-dimensional structure of the feeding chamber provided according to an embodiment of the present invention is shown.

[0032] Figure 7 A three-dimensional structural diagram of the leveling roller, lifting frame, and fixing frame provided according to an embodiment of the present invention is shown.

[0033] Figure 8 A three-dimensional structural schematic diagram of a vacuum belt filter provided according to an embodiment of the present invention is shown.

[0034] The above-mentioned attached drawings include the following reference numerals: 1. Mounting base; 2. Fixing frame; 3. Premixing chamber; 4. Discharge chamber; 40. Discharge trough; 5. Connecting pipe; 6. Mixing component; 61. First baffle plate; 62. Layering plate; 63. Feed trough; 7. Equalizing unit; 70. Discharge sleeve; 71. Lower groove; 72. Divider plate; 73. Rotating shaft; 74. Second baffle plate; 8. Leveling component; 80. Leveling roller; 81. Lifting frame; 82. Threaded rod. Detailed Implementation

[0035] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] like Figure 1As shown, a wastewater recycling and treatment device for quartz sand production is used in conjunction with a vacuum belt filter. The vacuum belt filter includes an installation base 1 for support and two front-to-back fixed frames 2. It includes a premixing chamber 3. Two left-to-right premixing chambers 3 are fixedly arranged on the left side of the installation base 1 through the two front-to-back fixed frames. A discharge chamber 4 is fixedly arranged between the two fixed frames 2. The discharge chamber 4 is located on the right side of the premixing chamber 3. Both premixing chambers 3 are connected to the discharge chamber 4 through two front-to-back connecting pipes 5.

[0037] like Figure 1 , Figure 3 and Figure 5 As shown, the premixing chamber 3 is equipped with a mixing component 6 for mixing quartz sand of different particle sizes. The lower end of the feeding chamber 4 is provided with multiple feeding troughs 40 that are equidistantly distributed in front and behind. The feeding chamber 4 is equipped with a material distribution unit 7 for evenly distributing materials.

[0038] like Figure 1 and Figure 7 As shown, a leveling assembly 8 is provided between the two fixed frames 2 on the right side of the unloading chamber 4. The leveling assembly 8 includes a leveling roller 80 rotatably mounted on the two fixed frames 2, with the axis of the leveling roller 80 extending back and forth.

[0039] First, the mixing component 6 in the premixing chamber 3 is used to uniformly mix the different particles of quartz sand in the material. Then, the mixed material enters the feeding chamber 4 and is evenly distributed by the equalization unit 7 through multiple feeding troughs 40 onto the conveyor belt in the vacuum belt filter. Subsequently, the leveling component 8 is used to level the material so that it is spread evenly on the conveyor belt.

[0040] It should be further noted that in the treatment of wastewater from quartz sand production, after pretreatment, sludge thickening, and sludge buffering (with the addition of flocculant PAM), a vacuum belt filter is required for the core dewatering process, ultimately yielding dry sludge cake and clear liquid. The vacuum belt filter is an existing external technology (see [link to relevant documentation]). Figure 8 During the filtration process, the corresponding material (here, the material is a slurry containing flocculant and mixed with quartz sand, hereinafter referred to as the material) is fed onto the conveyor belt of the vacuum belt filter. During the conveying process, the vacuum box in the filter performs vacuum suction filtration on the material, and the final treatment forms a dry mud cake and a clear liquid, which will not be described in detail later.

[0041] During operation, the material is first pumped into two premixing chambers 3. The mixing components 6 in the premixing chambers 3 perform preliminary mixing of quartz sand of different particle sizes in the material. The material is then pumped into the discharge chamber 4 through the connecting pipe 5. The material is then evenly distributed by the uniform unit and finally falls onto the conveyor belt through each discharge chute 40, forming equidistant discharge points. As the conveyor belt continues to transport the material, the leveling rollers 80 in the leveling component 8 flatten the material at each discharge point, so that the material is transported in a flat state with quartz sand of different particle sizes evenly distributed inside. Finally, the material is filtered by a vacuum belt filter to obtain dry mud cake and clean water.

[0042] In the above process, the operation mode of setting up two premixing chambers 3 can ensure that a single premixing chamber 3 is always pumped in and fed, which facilitates maintenance or cleaning of the premixing chamber 3 without stopping the machine. This ensures that there are no additional factors such as sedimentation or agglomeration in the premixing chamber 3 that would interfere with the filtration process, thereby improving the overall processing quality and operating efficiency. The premixing step in the premixing chamber 3, combined with the uniform mixing step in the feeding chamber 4, ensures that the material on the conveyor belt of the feeding chamber 4 contains quartz sand of different particle sizes, avoiding the problem of uneven distribution of quartz sand of different particle sizes on the conveyor belt, which would lead to uneven permeability of the material in some areas. Before the material enters the filtration process, the leveling component 8 levels the material to a set thickness on the conveyor belt, avoiding the problem of uneven permeability caused by uneven thickness of the material after it is spread out. In summary, the above operation process avoids affecting the overall dewatering performance and improves the overall processing quality.

[0043] like Figure 1 and Figure 3 As shown, the mixing component 6 includes a rotating shaft. Three rotating shafts are equidistantly distributed in the premixing chamber 3. The axis of the rotating shaft is vertical. A spiral baffle 61 is fixedly sleeved on the rotating shaft. The rotating shaft is connected to an external motor (not shown in the figure).

[0044] The adjacent rotating shafts rotate in opposite directions. When the central rotating shaft drives the spoiler 61 to rotate, the spoiler 61 carries the material downwards.

[0045] like Figure 3 As shown, a layered plate 62 is fixedly installed inside the premixing chamber 3, which divides the inner cavity of the premixing chamber 3 into an upper output chamber and a lower mixing chamber.

[0046] The layered plate 62 has two left and right distributed material conveying channels 63, which are located directly above the middle baffle plate 61.

[0047] like Figure 1 and Figure 2As shown, the premixing chamber 3 is provided with docking flanges on both the front and rear sides. The docking flanges are connected to the pipeline in the external water pump. Both ends of the connecting pipe 5 are connected to the corresponding chambers through the upper end faces of the premixing chamber 3 and the feeding chamber 4.

[0048] The connecting pipes 5 on the different premixing chambers 3 are intermittently staggered. The connecting pipes 5 are divided into vertical section, inclined section and vertical section from left to right, wherein the inclined section is inclined downward from left to right.

[0049] During operation, an external water pump gradually pumps the treated material into the mixing chamber from below the premixing chamber 3 through a pipeline. The material gradually accumulates and rises in the mixing chamber, then enters the output chamber through the conveying trough 63. Finally, it enters the connecting pipe 5 through the output chamber and begins to enter the discharge chamber 4. It should be noted that the feeding route is from bottom to top, and the inclined and vertical sections of the connecting pipe 5 are oriented in the same direction to avoid the problem of quartz sand deposition during the process of entering the discharge chamber 4 from the premixing chamber 3, which could lead to uneven particle size and uneven material distribution, thus affecting the treatment effect.

[0050] While the above operations are being performed, the external motor drives the rotating shaft and the baffle plate 61 to rotate synchronously. This causes the front and rear baffle plates 61 to carry the newly entered material upwards, while the middle baffle plate 61 carries the material downwards. As a result, relative flow occurs between the two adjacent baffle plates 61, creating a stirring action. Compared to the existing method of direct stirring by blades, the above process is slower and does not cut the material, thus avoiding affecting the flocculation effect. Furthermore, the position of the feed trough 63 prevents material that has not been stirred by the baffle plates 61 from directly entering the output chamber during the stirring process, ensuring that the overall premixing effect meets the processing requirements.

[0051] Additional notes regarding the operation of the two premixing chambers 3 are needed: a valve (not shown in the figure) is installed at the connection between the connecting pipe 5 and the premixing chamber 3 to control the material conveying route. Therefore, when one of the premixing chambers 3 needs to stop operation and enter the maintenance and cleaning state, the corresponding valve is closed before cleaning and maintenance. Furthermore, the premixing chamber 3 is an integral assembly, which facilitates subsequent maintenance. The above operation process and components are all external existing technologies, and will not be elaborated further.

[0052] like Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, the equal distribution unit 7 includes a discharge sleeve 70. The lower end face of the discharge chamber 4 is fixedly provided with a discharge sleeve 70 corresponding to the discharge trough 40. In order to avoid the problem of material dispersion caused by the impact force when the material is discharged from the discharge chamber 4 onto the conveyor belt, the discharge sleeve 70 is a frustum shape with a smaller top and a larger bottom. This is used to reduce the flow rate of the material during discharge and at the same time expand the discharge area, so as to facilitate the formation of the required material pile at the corresponding discharge point.

[0053] The lower end face of the feeding chamber 4 is provided with a plurality of recessed grooves 71 corresponding to the feeding groove 40. The recessed grooves 71 are recessed from the periphery toward the center of the corresponding feeding groove 40. A plurality of partition plates 72 are fixedly installed in the feeding chamber 4 and are distributed at equal intervals in front and behind. The partition plates 72 divide the inner cavity of the feeding chamber 4 into partition cavities corresponding to the feeding groove 40.

[0054] like Figure 1 and Figure 4 As shown, the feeding chamber 4 is rotatably equipped with two rotating shafts 73 that are distributed left and right and whose axes extend front and back. The rotating shafts 73 are fixedly fitted with spiral baffles 74 that correspond to the partition chamber. The two rotating shafts 73 are respectively connected to corresponding motors, and the two rotating shafts 73 rotate in opposite directions.

[0055] During operation, after the material enters the feeding chamber 4, the material enters each partitioned cavity in batches and is discharged from the corresponding feeding chute 40 onto the conveyor belt. In the above process, the feeding interference between adjacent feeding ports is reduced by the separation method to ensure that the material feeding amount at each feeding point is the same (it is acceptable if they are not too similar). The material is guided through the corresponding feeding chute 40 by the lower groove 71 to avoid material accumulation.

[0056] During the material feeding process, the motor drives the second baffle plate 74 to rotate synchronously via the corresponding rotating shaft 73. Therefore, within the same partitioned chamber, the second baffle plate 74 on the left moves backward while carrying the material, and the baffle plate on the right moves forward while carrying the material. As a result, there is a small-amplitude mixing and stirring process between the materials in the partitioned chamber. This, combined with the premixing process, further ensures the uniformity of the quartz sand particle size distribution in the material. In summary, the secondary mixing process improves the final processing quality.

[0057] like Figure 1 and Figure 7 As shown, the leveling assembly 8 also includes a lifting frame 81. The lifting frames 81 are slidably arranged on the opposite surfaces of the two fixed frames 2, and the leveling roller 80 is rotatably arranged between the two lifting frames 81.

[0058] The fixed frame 2 is rotatably provided with a threaded rod 82 with a vertical axis corresponding to the lifting frame 81. The threaded rod 82 is threaded through the lifting frame 81, and the height of the leveling roller 80 can be adjusted by manually rotating the threaded rod 82.

[0059] Before processing, the threaded rod 82 is manually rotated according to the required material spreading thickness to adjust the distance between the leveling roller 80 and the conveyor belt to match the spreading thickness. Then, processing begins. Material from the feeding chamber 4 is fed onto the conveyor belt, forming multiple material piles directly below the feeding trough 40. The conveyor belt gradually transports these piles past the leveling roller 80, which levels the material to the specified thickness. The material is then gradually moved above the vacuum box for vacuum suction filtration. During this process, the leveling roller 80 compresses all the material piles and, using the equidistant and uniform feeding method, forms the required thickness of material with a uniform distribution, avoiding uneven material distribution that could lead to inconsistent permeability and improving the overall processing effect. Regarding the set thickness after spreading, it should be noted that the set thickness value described above was obtained through analysis of the characteristics of the material by those skilled in the art. It was determined that this set thickness allows for sufficient vacuum suction filtration of the material, and is considered an existing technology feature, which will not be elaborated further.

[0060] Additional explanation is needed regarding the overall operation process. Compared to existing technologies that simply spread materials onto a conveyor belt using a material distributor and then perform vacuum suction filtration, this technical solution adds a premixing chamber 3, a discharge chamber 4, a connecting pipe 5, a mixing component 6, a leveling unit 7, and a leveling component 8. First, the mixing component 6 performs slow, turbulent mixing in the premixing chamber 3. Then, the material is conveyed to the discharge chamber 4 through the connecting pipe 5. Next, the leveling unit 7 separates the material in the discharge chamber 4 and performs a small-scale mixing process in the separating chamber. Therefore, through premixing... The mixing process and the small-amplitude mixing process involve mixing different particle sizes of quartz sand in the material, and finally, the material is spread evenly on the conveyor belt to a set thickness by the leveling component 8, ensuring that the material can be dehydrated evenly and improving the overall processing effect. In addition, the above-mentioned added components are all external existing mechanical parts, and can be used for a long time after a single installation. Compared with the economic benefits brought by improving the processing effect, the cost of the added components is negligible. Therefore, this technical solution is a specific improvement based on the defects of the existing technology and to solve the defects of the technology.

[0061] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0062] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" 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 communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A wastewater recycling and treatment device for quartz sand production, used in conjunction with a vacuum belt filter, characterized in that, include: The vacuum belt filter is equipped with two premixing chambers distributed on the left and right. The right premixing chamber is located to the right of the right premixing chamber. Both premixing chambers are connected to the discharge chamber through two connecting pipes distributed front and back. The premixing chamber is equipped with a mixing component for mixing quartz sand of different particle sizes. The lower end of the feeding chamber is provided with multiple feeding troughs that are equidistantly distributed in front and behind. The feeding chamber is also equipped with a material distribution unit for evenly distributing materials. The mixing component includes a baffle plate. Three baffle plates are equidistantly distributed in a spiral shape in the premixing chamber. The rotation directions of adjacent baffle plates are opposite. The middle baffle plate carries the material downward and slowly stirs the material. The uniform unit stirs the material in sections. A layered plate is fixedly installed in the premixing chamber, which divides the premixing chamber into an upper output chamber and a lower mixing chamber. Two feed troughs are provided on the layered plate, which are located directly above the middle baffle plate. A leveling assembly is provided on the right side of the feeding chamber. The leveling assembly includes leveling rollers with their axes extending forward and backward. During the material spreading process, multiple feeding troughs in the equalizing unit distribute the material evenly and quantitatively. Subsequently, the leveling component levels the material so that it is spread evenly on the conveyor belt of the vacuum belt filter.

2. The wastewater recycling and treatment device for quartz sand production according to claim 1, characterized in that: The mixing assembly also includes rotating shafts. Three rotating shafts are equidistantly distributed in the premixing chamber, with the axis of the rotating shafts being vertical. A spoiler is fixedly sleeved on the corresponding rotating shaft.

3. The wastewater recycling and treatment device for quartz sand production according to claim 1, characterized in that: The premixing chamber is gradually filled with material from bottom to top while being slowly stirred. Then the material enters the output chamber from the conveying trough and begins to be conveyed outward.

4. The wastewater recycling and treatment device for quartz sand production according to claim 1, characterized in that: The premixing chamber is equipped with docking flanges on both the front and rear sides, and both ends of the connecting pipe are connected to the corresponding chambers through the upper end faces of the premixing chamber and the feeding chamber.

5. The wastewater recycling and treatment device for quartz sand production according to claim 1, characterized in that: The connecting pipes on the different premixing chambers are intermittently staggered. The connecting pipes are divided into vertical sections, inclined sections and vertical sections from left to right, with the inclined sections sloping downwards from left to right.

6. The wastewater recycling and treatment device for quartz sand production according to claim 1, characterized in that: The equalization unit includes a discharge sleeve. The lower end face of the discharge chamber is fixedly provided with a discharge sleeve corresponding to the discharge trough. The discharge sleeve is a frustum shape with a smaller top and a larger bottom.

7. The wastewater recycling and treatment device for quartz sand production according to claim 1, characterized in that: The lower end face of the feeding chamber is provided with multiple recessed grooves corresponding to the feeding slots. The recessed grooves are recessed from the periphery toward the center of the corresponding feeding slots. Multiple partition plates are fixedly installed in the feeding chamber and are distributed at equal intervals in front and behind. The partition plates divide the inner cavity of the feeding chamber into partition cavities corresponding to the feeding slots.

8. The wastewater recycling and treatment device for quartz sand production according to claim 1, characterized in that: The feeding chamber is equipped with two rotating shafts that are distributed to the left and right and extend forward and backward. A spiral baffle plate corresponding to the partition cavity is fixedly sleeved on the rotating shaft. The two rotating shafts are respectively connected to the corresponding motors, and the two rotating shafts rotate in opposite directions.

9. The wastewater recycling and treatment device for quartz sand production according to claim 1, characterized in that: The leveling assembly also includes lifting frames. The vacuum belt filter is equipped with two lifting frames that slide up and down, and the leveling roller is rotatably positioned between the two lifting frames. The vacuum belt filter is equipped with a threaded rod with a vertical axis that corresponds to the lifting frame. The threaded rod passes through the lifting frame, and the height of the leveling roller is adjusted by manually rotating the threaded rod.

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