A waste liquid stratification recovery device

Abstract

This utility model discloses a stratified waste liquid recycling device, including a first solid-liquid separation mechanism and a second solid-liquid separation mechanism. The first solid-liquid separation mechanism includes a transparent first tank, which comprises a bottom tank at the lower end and an upper tank at the upper end. The bottom tank is open at the upper end, and the upper and lower ends of the upper tank are connected through each other. The upper tank and the bottom tank are sealed together by a flange. A first conveying pipe is provided above the upper tank, and a first water pump is connected to the first conveying pipe. A water suction pipe is provided inside the first tank through a lifting mechanism, and the water suction pipe is connected to the beginning of the first conveying pipe by a flexible hose. At least one second solid-liquid separation mechanism is provided, and at least one second solid-liquid separation mechanism is connected to the end of the first conveying pipe. Through this utility model, most of the solid waste is separated in the first solid-liquid separation mechanism, and the solid waste is poured out by disassembling the bottom tank, avoiding blockage caused by poorly flowing solid waste and improving the smoothness of solid-liquid separation.

Description

Technical Field

[0001] This utility model relates to the field of separation technology, specifically to a waste liquid stratification and recovery device. Background Technology

[0002] Chemical mechanical polishing (CMP) is widely used for planarization of precision surfaces such as optical glass, semiconductor chips (silicon wafers, compound semiconductors), and sapphire substrates. The polishing slurries used, especially cerium oxide slurries, contain high-value rare earth oxide abrasive particles (such as cerium dioxide, CeO2). After polishing, the slurry needs to be recycled, requiring stratification and separation of different components. During the initial separation, due to the high amount of solid waste in the waste liquid, a large amount of solid waste accumulates and settles. Because of the characteristics of the solid waste in the cerium oxide slurry, a large amount of solid waste agglomerates, resulting in poor flowability. Conventional methods, such as setting a discharge port at the bottom of the separation equipment, cannot directly remove the precipitated solid waste. Utility Model Content

[0003] To address the shortcomings of the existing technology, this invention proposes a waste liquid stratification and recycling device.

[0004] To achieve the above-mentioned technical effects, the present invention adopts the following solution:

[0005] A waste liquid stratification and recycling device includes a first solid-liquid separation mechanism and a second solid-liquid separation mechanism;

[0006] The first solid-liquid separation mechanism includes a transparent first tank body, which includes a bottom tank at the lower end and an upper tank at the upper end. The bottom tank is open at the upper end, and the upper and lower ends of the upper tank are connected through each other. The upper tank and the bottom tank are sealed together by a flange. A first conveying pipe is provided above the upper tank, and a first water pump is connected to the first conveying pipe. A water suction pipe is provided in the first tank body through a lifting mechanism, and the water suction pipe is connected to the first end of the first conveying pipe through a flexible hose.

[0007] The second solid-liquid separation mechanism is provided at least one, and at least one of the second solid-liquid separation mechanisms is connected to the end of the first conveying pipe.

[0008] In a preferred embodiment, the second solid-liquid separation mechanism includes a transparent second barrel, with an inlet at the upper end of the second barrel connected to the end of the first conveying pipe, and a discharge port at the lower end of the second barrel, wherein a vertically arranged discharge pipe is connected to the discharge port via a valve.

[0009] The two adjacent second solid-liquid separation mechanisms are connected by a conveying mechanism. The conveying mechanism includes a second conveying pipe and a second water pump connected to the second conveying pipe. The valve on the first second solid-liquid separation mechanism is a three-way valve. The three-way valve connects the corresponding discharge port, the discharge pipe and the beginning of the second conveying pipe. The end of the second conveying pipe is connected to the liquid inlet on the second second solid-liquid separation mechanism.

[0010] In a preferred embodiment, the upper end of the second barrel is sealed with a second barrel cover, the liquid inlet is located on the second barrel cover, and the second barrel cover is also provided with a vent that communicates with the interior of the second barrel. The outer end of the vent is connected to a rotary air inlet valve.

[0011] In a preferred embodiment, the second barrel lid is detachably mounted on the upper end of the second barrel body, and the second barrel lid and the second barrel body are connected by bolts.

[0012] In a preferred embodiment, the lower end of the upper barrel is provided with a first flange plate, the upper end of the bottom barrel is provided with a second flange plate, a sealing ring is sandwiched between the first flange plate and the second flange plate, and the first flange plate and the second flange plate are locked together by bolts.

[0013] In a preferred embodiment, the lifting mechanism includes either a cylinder or an electric push rod. The cylinder or electric push rod is fixed to the upper end of the first barrel by a bracket, and the telescopic end of the cylinder or electric push rod extends downward and is connected to the water pumping pipe through a connecting frame.

[0014] Compared with existing technologies, the beneficial effects are:

[0015] This invention features a simple structure and convenient operation. Waste liquid is loaded into the first tank of the first solid-liquid separation mechanism. After settling and stratifying, solid sediment accumulates in the bottom tank, while the liquid remains on top. A lifting mechanism drives a pumping pipe to extract the liquid from below the surface. The extracted liquid is then transported through a first conveying pipe to a second solid-liquid separation mechanism for further settling and separation. After liquid extraction is complete, the bottom tank is removed, and the solid sediment is poured out. This invention effectively separates most of the solid waste within the first solid-liquid separation mechanism. Furthermore, the removal of the solid waste by disassembling the bottom tank avoids blockages caused by poorly flowing solid waste, thus improving the smoothness of solid-liquid separation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0018] Figure 3 This is a schematic diagram of the lifting mechanism in this utility model.

[0019] Reference numerals in the attached drawings: 1. First solid-liquid separation mechanism; 101. First barrel; 1011. Bottom barrel; 1012. Upper barrel; 102. First flange plate; 103. Second flange plate; 104. Sealing ring; 105. First conveying pipe; 106. First water pump; 107. Cylinder; 108. Water suction pipe; 109. Flexible hose; 2. Second solid-liquid separation mechanism; 201. Second barrel; 202. Barrel cover; 203. Liquid inlet; 204. Rotary air inlet valve; 205. Discharge port; 206. Discharge pipe; 207. Valve; 208. Water inlet; 3. Conveying mechanism; 301. Second conveying pipe; 302. Second water pump. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] A waste liquid stratification and recycling device includes a first solid-liquid separation mechanism 1 and a second solid-liquid separation mechanism 2;

[0022] The first solid-liquid separation mechanism 1 includes a transparent first tank 101. The first tank 101 includes a bottom tank 1011 at the lower end and an upper tank 1012 at the upper end. The bottom tank 1011 is open at the upper end, and the upper and lower ends of the upper tank 1012 are connected through each other. The upper tank 1012 and the bottom tank 1011 are sealed together by a flange. A first conveying pipe 105 is provided above the upper tank 1012. A first water pump 106 is connected to the first conveying pipe 105. A water suction pipe 108 is provided inside the first tank 101 through a lifting mechanism. The water suction pipe 108 is connected to the first end of the first conveying pipe 105 through a flexible hose 109.

[0023] The second solid-liquid separation mechanism 2 is provided at least one, and at least one second solid-liquid separation mechanism 2 is connected to the end of the first conveying pipe 105.

[0024] The liquid containing solid waste is poured into the first tank 101 for primary separation, separating most of the solid waste. First, it is allowed to stand in the first tank 101, and after standing, it separates into layers: a solid sediment layer at the bottom and a liquid layer at the top. The solid sediment layer accumulates in the bottom tank 1011. Then, separation is carried out by driving the water pumping pipe 108 to extend below the liquid surface through the lifting mechanism to extract the liquid. The liquid is pumped through the second conveying pipe 301 to a second solid-liquid separation mechanism 2 at the rear. After the liquid extraction is completed, the bottom tank 1011 is removed, thereby pouring out the solid sediment.

[0025] After primary separation, the liquid is transported to the second solid-liquid separation unit 2 for secondary separation. Similarly, sedimentation and stratification occur first, and then the lower valve 207 is opened to discharge the lower fixed sediment and liquid in stages. The fixed sediment is discharged from the discharge pipe 206, and the liquid can be sent to another second solid-liquid separation unit 2 for tertiary separation. Depending on the separation requirements, different numbers of second solid-liquid separation units 2 can be connected in sequence to achieve multi-stage separation.

[0026] This invention separates most of the solid waste in the first solid-liquid separation mechanism 1, and pours out the solid waste by disassembling the bottom tank 1011, thus avoiding blockage caused by the poorly flowing solid waste and improving the smoothness of solid-liquid separation.

[0027] In a preferred embodiment, the second solid-liquid separation mechanism 2 includes a transparent second barrel 201. The upper end of the second barrel 201 is provided with a liquid inlet 203 connected to the end of the first conveying pipe 105, and the lower end of the second barrel 201 is provided with a discharge port 205. A vertically arranged discharge pipe 206 is connected to the discharge port 205 through a valve 207.

[0028] Two adjacent second solid-liquid separation mechanisms 2 are connected by a conveying mechanism 3. The conveying mechanism 3 includes a second conveying pipe 301 and a second water pump 302 connected to the second conveying pipe 301. The valve 207 on the first second solid-liquid separation mechanism 2 is a three-way valve. The three-way valve connects the corresponding discharge port 205, discharge pipe 206 and the beginning of the second conveying pipe 301. The end of the second conveying pipe 301 is connected to the liquid inlet 203 on the second second solid-liquid separation mechanism 2.

[0029] After the previous separation step, the liquid is fed into the second tank 201 through the inlet 203 for settling and stratification. A small amount of solid waste settles in the lower layer. Although the solid waste may clump together, the amount is small, allowing it to be discharged from the bottom of the second tank 201 through the appropriately sized discharge port 205 and discharge pipe 206, after opening valve 207. If further separation is not required, after discharging the solid sediment, valve 207 is opened again, and the liquid is discharged through discharge pipe 206. If further separation is required, after opening valve 207, the liquid is pumped through the second conveying pipe 301 to the second tank 201 of the next second solid-liquid separation mechanism 2.

[0030] In a preferred embodiment, the upper end of the second barrel body 201 is sealed with a second barrel cover 202, the liquid inlet 203 is provided on the second barrel cover 202, and the second barrel cover 202 is also provided with a vent that communicates with the interior of the second barrel body 201. The outer end of the vent is connected to a rotary air inlet valve 204.

[0031] When discharging liquid, the air pressure inside the second tank 201 can be adjusted by rotating the rotary air inlet valve 204, thereby controlling the flow rate of the discharged liquid. A water inlet 208 can also be provided on the tank lid 202. The water inlet 208 needs to be equipped with a sealing plug. Before settling, the solid-waste ratio of the wastewater can be adjusted by injecting clean water into the second tank 201.

[0032] In a preferred embodiment, the second barrel cover 202 is detachably mounted on the upper end of the second barrel body 201, and the second barrel cover 202 and the second barrel body 201 are connected by bolts.

[0033] In a preferred embodiment, the lower end of the upper barrel 1012 is provided with a first flange plate 102, the upper end of the bottom barrel 1011 is provided with a second flange plate 103, a sealing ring 104 is sandwiched between the first flange plate 102 and the second flange plate 103, and the first flange plate 102 and the second flange plate 103 are locked together by bolts.

[0034] In a preferred embodiment, the lifting mechanism includes either a cylinder 107 or an electric push rod. The cylinder 107 or the electric push rod is fixed to the upper end of the first barrel 101 by a bracket. The telescopic end of the cylinder 107 or the electric push rod extends downward and is connected to the water pumping pipe 108 through a connecting frame.

[0035] Vertically distributed scale lines can be set on the outer walls of both the first barrel 101 and the second barrel 201 for reference during separation.

[0036] In the description of this utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "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 utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component 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.

[0037] Furthermore, the terms "first" and "second" 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" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A layered recovery apparatus for waste liquids, characterized by, It includes a first solid-liquid separation mechanism (1) and a second solid-liquid separation mechanism (2); The first solid-liquid separation mechanism (1) includes a transparent first barrel (101), which includes a bottom barrel (1011) at the lower end and an upper barrel (1012) at the upper end. The bottom barrel (1011) has an opening at the upper end, and the upper and lower ends of the upper barrel (1012) are connected through each other. The upper barrel (1012) and the bottom barrel (1011) are sealed together by a flange. A first conveying pipe (105) is provided above the upper barrel (1012), and a first water pump (106) is connected to the first conveying pipe (105). A water pumping pipe (108) is provided inside the first barrel (101) through a lifting mechanism. The water pumping pipe (108) is connected to the first end of the first conveying pipe (105) through a hose (109). The second solid-liquid separation mechanism (2) is provided with at least one, and at least one second solid-liquid separation mechanism (2) is connected to the end of the first conveying pipe (105).

2. The layered recovery apparatus for waste liquids of claim 1, wherein, The second solid-liquid separation mechanism (2) includes a transparent second barrel (201), the upper end of the second barrel (201) is provided with a liquid inlet (203) connected to the end of the first conveying pipe (105), the lower end of the second barrel (201) is provided with a discharge port (205), and the discharge port (205) is connected to a vertically arranged discharge pipe (206) through a valve (207); The two adjacent second solid-liquid separation mechanisms (2) are connected by a conveying mechanism (3). The conveying mechanism (3) includes a second conveying pipe (301) and a second water pump (302) connected to the second conveying pipe (301). The valve (207) on the first second solid-liquid separation mechanism (2) is a three-way valve. The three-way valve connects the corresponding discharge port (205), discharge pipe (206) and the beginning of the second conveying pipe (301). The end of the second conveying pipe (301) is connected to the inlet (203) on the second second solid-liquid separation mechanism (2).

3. The apparatus for layered recovery of waste liquids of claim 2, wherein, The upper end of the second barrel body (201) is sealed with a second barrel cover (202), the liquid inlet (203) is located on the second barrel cover (202), the second barrel cover (202) is also provided with a vent that communicates with the inside of the second barrel body (201), and the outer end of the vent is connected to a rotary air inlet valve (204).

4. The layered recovery apparatus for waste liquids of claim 3, wherein, The second barrel lid (202) is detachably mounted on the upper end of the second barrel body (201), and the second barrel lid (202) and the second barrel body (201) are connected by bolts.

5. The layered recovery apparatus for waste liquids of claim 1, wherein, The lower end of the upper barrel (1012) is provided with a first flange plate (102), and the upper end of the bottom barrel (1011) is provided with a second flange plate (103). A sealing ring (104) is sandwiched between the first flange plate (102) and the second flange plate (103), and the first flange plate (102) and the second flange plate (103) are locked together by bolts.

6. The layered recovery apparatus for waste liquids of claim 1, wherein, The lifting mechanism comprises one of a pneumatic cylinder (107) or an electric push rod, the pneumatic cylinder (107) or the electric push rod is fixed on the upper end of the first barrel (101) through a support, and the telescopic end of the pneumatic cylinder (107) or the electric push rod extends downward and is connected with the water suction pipe (108) through a connecting frame.

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