A device for treating wastewater produced in refined quartz sand production

Abstract

The utility model provides a kind of refined quartz sand production wastewater zero discharge treatment device, including ultrafiltration tank and ultrafiltration plate, the top of the ultrafiltration tank is fixedly provided with the guide cylinder with bottom end in the ultrafiltration tank, the guide cylinder is equipped with the water leakage tray that can move up and down, reset spring is arranged between the bottom in the guide cylinder and the water leakage tray, the upper of the water leakage tray is paved with ultrafiltration plate.In the utility model, by setting guide cylinder, water leakage tray, ultrafiltration plate, cover and pressure rod, so that cover drops and blocks guide cylinder, then ultrafiltration plate is pressed down to a certain position and is in filtering station, when cover moves up to a certain position, then ultrafiltration plate moves up and separates from guide cylinder, at this time, ultrafiltration plate on water leakage tray can be replaced by taking and placing etc., with the advantage that replacing ultrafiltration plate operation is more convenient and safe.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology in quartz sand production, specifically a zero-discharge treatment device for refined quartz sand production wastewater. Background Technology

[0002] The production of refined quartz sand requires a large amount of water. This water contains a lot of impurities and harmful substances. Due to the large volume of water, direct discharge will not only pollute the environment, but also waste water resources.

[0003] To address this issue, cold discharge treatment equipment has been incorporated into the production process of quartz sand. This equipment employs processes including coarse filtration, sedimentation, pH adjustment, pressure filtration, ultrafiltration, and fine filtration. It effectively filters out large and small particulate matter, floating solids, heavy metals, and chemical residues from wastewater. The treated wastewater can be recycled without further discharge treatment. This type of equipment involves an ultrafiltration stage in wastewater treatment. The ultrafiltration stage uses ultrafiltration membrane modules to filter out large organic molecules, microorganisms, and colloidal substances from the pre-treated wastewater. However, the ultrafiltration membrane modules are disc-shaped structures, typically installed using bolts and sealing rings to press them tightly into the filter cartridge. When the filtration efficiency deteriorates and replacement is needed, the high bolt tightening force and numerous bolts required for sealing make disassembly laborious and inconvenient, as operators must individually tighten each bolt. This process is also susceptible to wastewater contamination.

[0004] Therefore, this utility model provides a zero-discharge treatment device for wastewater from refined quartz sand production. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a zero-discharge treatment device for refined quartz sand production wastewater to solve the problems mentioned in the background technology. This utility model has the advantages of making it more convenient and quick to replace ultrafiltration plates, and can effectively avoid wastewater pollution of operators, thereby improving the safety of operators when replacing ultrafiltration plates.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a zero-discharge treatment device for refined quartz sand production wastewater, comprising an ultrafiltration tank and an ultrafiltration plate. A guide cylinder with its bottom end located inside the ultrafiltration tank is fixedly installed at the top of the ultrafiltration tank. A water leakage tray that can move up and down is sleeved inside the guide cylinder. A return spring is provided between the bottom of the guide cylinder and the water leakage tray. The ultrafiltration plate is laid on top of the water leakage tray. A cover that can move up and down is provided on top of the guide cylinder. A pressure rod located above the water leakage tray is fixedly connected to the middle of the bottom of the cover. A water inlet pipe is fixedly connected to the top of the cover. The top of the ultrafiltration tank is connected to the cover through a lifting drive rod 7.

[0007] Furthermore, the ultrafiltration plate includes a hollow disk and an ultrafiltration membrane assembly filled inside the disk. The upper and lower surfaces of the disk are provided with evenly distributed water passage holes, and a sealing ring that seals with the guide cylinder is fixedly fitted around the outer periphery of the disk.

[0008] Furthermore, a positioning tube is provided through the center of the disc, a positioning shaft that is fixedly connected to the center of the top of the leaking tray and is inserted into the positioning tube, a pressure plate is welded to the bottom of the pressure rod, and a rubber gasket that is sealed to the upper end face of the positioning tube is adhered to the bottom of the pressure plate.

[0009] Furthermore, an annular support plate is welded to the bottom of the guide cylinder, with its upper end face abutting against the bottom of the reset spring.

[0010] Furthermore, the surface of the drain tray is provided with evenly distributed drain holes, and the outside of the drain tray is fixedly fitted with a limiting sleeve that fits with the guide cylinder with a gap. The top of the limiting sleeve is flush with the upper surface of the drain tray.

[0011] Furthermore, two symmetrical guide sleeves are welded to the cover near the outer periphery, and a guide rod fitted inside the guide sleeve is welded to the top of the ultrafiltration tank.

[0012] Furthermore, the lifting drive rod is fixedly mounted on the outer peripheral wall of the ultrafiltration tank, and the output shaft of the lifting drive rod is fixedly connected to the outer peripheral wall of the cover via a connecting arm.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. In this utility model, by setting a guide cylinder, a water leakage tray, an ultrafiltration plate, a cover and a pressure rod, when the cover descends to block the guide cylinder, the ultrafiltration plate is pressed down to a certain position and is in the filtration position. When the cover moves up to a certain position, the ultrafiltration plate moves up and detaches from the guide cylinder. At this time, the ultrafiltration plate on the water leakage tray can be replaced by taking it out or putting it back in. It has the advantages of making the replacement of ultrafiltration plates more convenient and safe.

[0015] 2. In this utility model, by setting a positioning tube, a positioning shaft and a pressure plate, the ultrafiltration plate can be quickly and accurately aligned with the guide cylinder through the positioning shaft, so that the ultrafiltration plate will not damage the sealing ring due to misalignment when entering and exiting the guide cylinder, and the ultrafiltration plate can be installed quickly and accurately. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the ultrafiltration tank, ultrafiltration membrane module, and leakage tray of the zero-discharge treatment device for refined quartz sand production wastewater after an explosion.

[0017] Figure 2 for Figure 1The main view;

[0018] Figure 3 for Figure 1 A diagram at the bottom;

[0019] Figure 4 This is a schematic diagram of the ultrafiltration tank in the ultrafiltration working state of a zero-discharge treatment device for refined quartz sand production wastewater according to this utility model.

[0020] In the diagram: 1. Ultrafiltration tank; 11. Guide rod; 13. Guide cylinder; 131. Annular support plate; 2. Ultrafiltration plate; 21. Disc; 211. Water passage hole; 212. Sealing ring; 213. Positioning tube; 22. Ultrafiltration membrane module; 3. Leakage tray; 31. Positioning shaft; 32. Limiting sleeve; 33. Leakage hole; 4. Cover; 41. Water inlet pipe; 42. Guide sleeve; 5. Return spring; 6. Pressure rod; 61. Pressure plate; 611. Rubber pad; 7. Lifting drive rod. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1 to 4 This utility model provides a technical solution: a zero-discharge treatment device for wastewater from refined quartz sand production, comprising an ultrafiltration tank 1 and an ultrafiltration plate 2. A guide cylinder 13 with its bottom end located inside the ultrafiltration tank 1 is fixedly installed on the top of the ultrafiltration tank 1. A water-leaking tray 3, which can move up and down, is fitted inside the guide cylinder 13. A return spring 5 is installed between the bottom of the guide cylinder 13 and the water-leaking tray 3. Specifically, an annular support plate 131 with its upper end face abutting against the bottom of the return spring 5 is welded to the bottom of the guide cylinder 13. The ultrafiltration plate 2 is laid on top of the water-leaking tray 3, which supports the ultrafiltration plate 2. The return spring 5, when not under downward pressure, uses its elasticity to push the water-leaking tray 3 upward to the opening of the guide cylinder 13.

[0023] The guide tube 13 is the channel through which the pre-treated wastewater (suspended solids, fine sand, sludge and dissolved substances, etc.) enters the ultrafiltration tank 1. The ultrafiltration plate 2 is used to ultra-filter the pre-treated wastewater for macromolecular organic matter, colloidal matter and microorganisms. The filtered water can be reused for the production and processing of quartz sand, or it can be further treated as needed, such as membrane concentration treatment and crystallization treatment.

[0024] In this technical solution, a cover 4 that can move up and down is provided above the guide cylinder 13. Specifically, two guide sleeves 42 that are close to the outer periphery and symmetrical are welded on the cover 4, and a guide rod 11 that is sleeved in the guide sleeve 42 is welded to the top of the ultrafiltration tank 1. When the cap 4 descends and contacts the top of the guide cylinder 13, it can seal the guide cylinder 13. Specifically, a sealing gasket is glued to the top of the guide cylinder 13. The bottom center of the cap 4 is fixedly connected to a pressure rod 6 located above the leakage tray 3. The function of the pressure rod 6 is to press the ultrafiltration plate 2 mentioned above into the guide cylinder 13. That is to say, when the cap 4 descends, the pressure rod 6 will simultaneously press the ultrafiltration plate 2 downward, and the leakage tray 3 will descend. At this time, the return spring 5 will be compressed. When the cap 4 moves upward, the leakage tray 3 will drive the ultrafiltration plate 2 to rise. When the ultrafiltration plate 2 extends out of the guide cylinder 13, and the cap 4 rises and the pressure rod 6 leaves the ultrafiltration plate 2, the ultrafiltration plate 2 can be easily removed and replaced. The leakage tray 3 will not extend out of the guide cylinder 13. Select a suitable return spring 5 according to this requirement.

[0025] The ultrafiltration plate 2 includes a hollow disk 21 and an ultrafiltration membrane assembly 22 filled in the disk 21. The upper and lower surfaces of the disk 21 are provided with evenly distributed water passage holes 211. A sealing ring 212 that seals with the guide cylinder 13 is fixedly sleeved on the outer periphery of the disk 21. The sealing ring 212 can ensure the sealing degree of the contact between the ultrafiltration plate 2 and the guide cylinder 13 and prevent leakage.

[0026] The top of the cover 4 is fixedly connected to a water inlet pipe 41, which is used to connect to the wastewater transmission pipeline after pretreatment. The top of the ultrafiltration tank 1 is connected to the cover 4 via a lifting drive rod 7. The function of the lifting drive rod 7 is to provide driving force for the up and down movement of the cover 4. A pressure pipe is also provided on the cover 4. This pressure pipe is used for air circulation. A certain pressure can be injected into the guide cylinder 13 as needed through the pressure pipe, thereby improving the ultrafiltration efficiency.

[0027] Specifically, the lifting drive rod 7 is fixedly installed on the outer peripheral wall of the ultrafiltration tank 1. The output shaft of the lifting drive rod 7 is fixedly connected to the outer peripheral wall of the cover 4 through the connecting arm. In specific implementation, the lifting drive rod 7 can be a hydraulic cylinder. In this embodiment, there are two lifting drive rods 7, which are symmetrically arranged relative to the cover 4. When in use, the two lifting drive rods 7 are connected to a solenoid valve with synchronous lifting control to realize synchronous lifting control of the lifting drive rods 7.

[0028] In this embodiment, a positioning tube 213 is provided through the middle of the disc 21. The "through" here means that the two ends of the positioning tube 213 are flush with the upper and lower end faces of the disc 21. A positioning shaft 31 that is inserted and cooperates with the positioning tube 213 is fixedly connected to the middle of the top of the water leakage tray 3. In specific implementation, the positioning shaft 31 can be set into a conical structure. The purpose is to quickly position the ultrafiltration plate 2 on the water leakage tray 3. A pressure plate 61 is welded to the bottom of the pressure rod 6. A rubber gasket 611 that seals with the upper end face of the positioning tube 213 is glued to the bottom of the pressure plate 61. After the pressure plate 61 contacts the upper end face of the positioning tube 213, it will block the positioning tube 213.

[0029] In this embodiment, the surface of the drain tray 3 is provided with evenly distributed drain holes 33, and the outside of the drain tray 3 is fixedly fitted with a limiting sleeve 32 that fits with the guide cylinder 13. The top of the limiting sleeve 32 is flush with the upper surface of the drain tray 3. This arrangement makes the up-and-down movement of the drain tray 3 within the guide cylinder 13 smoother.

[0030] Working principle: During use, the production wastewater, which has undergone coarse filtration, sedimentation, and neutralization treatment, is injected into the guide cylinder 13 through the inlet pipe 41 by a water pump. After being filtered by the ultrafiltration membrane module 22 in the ultrafiltration plate 2, the wastewater enters the bottom of the ultrafiltration tank 1. Colloidal substances, large molecular organic matter, and microorganisms in the wastewater are trapped on the ultrafiltration membrane module 22. When the filtration effect of the ultrafiltration membrane module 22 decreases and needs to be replaced periodically, the lifting drive rod 7 is pushed forward, the guide sleeve 42 rises, the cover 4 rises, the pressure plate 61 rises, the reset spring 5 extends, and pushes the leakage tray. As the tray 3 moves upward, the ultrafiltration plate 2 also moves upward. When it extends beyond the top opening of the guide tube 13, the operator can remove it directly. Then, the new ultrafiltration plate 2 is placed on the leaking tray 3 and quickly positioned by the positioning shaft 31. Then, the lifting drive rod 7 is controlled to drive the cover 4 to descend. The pressure plate 61 descends and contacts the top of the positioning tube 213. The disc 21 will enter the guide tube 13 and descend. When the cover 4 seals the top opening of the guide tube 13, the ultrafiltration plate 2 is replaced. Then, water can continue to be supplied to the guide tube 13 through the water inlet pipe 41.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A zero-discharge treatment device for wastewater from refined quartz sand production, comprising an ultrafiltration tank (1) and an ultrafiltration plate (2), characterized in that, The top of the ultrafiltration tank (1) is fixedly provided with a guide cylinder (13) whose bottom end is located inside the ultrafiltration tank (1). A water leakage tray (3) that can move up and down is sleeved inside the guide cylinder (13). A reset spring (5) is provided between the bottom of the guide cylinder (13) and the water leakage tray (3). An ultrafiltration plate (2) is laid on top of the water leakage tray (3). A cover (4) that can move up and down is provided on top of the guide cylinder (13). A pressure rod (6) located above the water leakage tray (3) is fixedly connected to the middle of the bottom of the cover (4). A water inlet pipe (41) is fixedly connected to the top of the cover (4). The top of the ultrafiltration tank (1) is connected to the cover (4) through a lifting drive rod (7).

2. The zero-discharge treatment device for refined quartz sand production wastewater according to claim 1, characterized in that: The ultrafiltration plate (2) includes a hollow disk (21) and an ultrafiltration membrane assembly (22) filled in the disk (21). The upper and lower surfaces of the disk (21) are provided with uniformly distributed water passage holes (211). The outer periphery of the disk (21) is fixedly fitted with a sealing ring (212) that seals with the guide cylinder (13).

3. The zero-discharge treatment device for refined quartz sand production wastewater according to claim 2, characterized in that: A positioning tube (213) is provided through the middle of the disc (21). A positioning shaft (31) that is inserted into and cooperates with the positioning tube (213) is fixedly connected to the middle of the top of the water leakage tray (3). A pressure plate (61) is welded to the bottom of the pressure rod (6). A rubber pad (611) that is sealed to the bottom of the pressure plate (61) is bonded to the top of the pressure plate (61).

4. The zero-discharge treatment device for refined quartz sand production wastewater according to claim 1, characterized in that: The bottom of the guide tube (13) is welded with an annular support plate (131) whose upper end face abuts against the bottom of the return spring (5).

5. The zero-discharge treatment device for refined quartz sand production wastewater according to claim 1, characterized in that: The drain tray (3) has evenly distributed drain holes (33) on its surface. The drain tray (3) is fixedly fitted with a limiting sleeve (32) that is in clearance fit with the guide cylinder (13). The top of the limiting sleeve (32) is flush with the upper surface of the drain tray (3).

6. The zero-discharge treatment device for refined quartz sand production wastewater according to claim 1, characterized in that: Two symmetrical guide sleeves (42) are welded to the cover (4) near the outer periphery, and a guide rod (11) is welded to the top of the ultrafiltration tank (1) and fitted inside the guide sleeves (42).

7. The zero-discharge treatment device for refined quartz sand production wastewater according to claim 6, characterized in that: The lifting drive rod (7) is fixedly installed on the outer peripheral wall of the ultrafiltration tank (1), and the output shaft of the lifting drive rod (7) is fixedly connected to the outer peripheral wall of the cover (4) through the connecting arm.

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