Sodium metabisulfite production wastewater treatment equipment

Abstract

The utility model discloses a kind of sodium metabisulfite production wastewater treatment equipment, belong to wastewater treatment technical field, comprising: sedimentation tank, the receiving shell is connected and installed in the sedimentation tank outside, the mounting plate is symmetrically installed to the sedimentation tank outer wall, and driving assembly is provided between mounting plate, L-shaped connecting rod is provided in the sedimentation tank, and water layer isolation component is provided on L-shaped connecting rod, cleaning assembly is provided in the sedimentation tank. Thus, the problem of stirring precipitate when recovering clear liquid can be completely solved by the physical isolation of isolation plate, and the stability of water quality after treatment is improved.

Description

Technical Field

[0001] This utility model relates to a wastewater treatment device for sodium metabisulfite production, belonging to the field of wastewater treatment technology. Background Technology

[0002] Sodium metabisulfite is a commonly used chemical raw material, widely applied in industries such as food, pharmaceuticals, printing and dyeing, and papermaking. The production process of sodium metabisulfite generates a large amount of wastewater containing high concentrations of sulfites, sulfates, heavy metal ions (such as lead, cadmium, and mercury), and a certain amount of organic pollutants. If this wastewater is discharged directly without effective treatment, it will pollute water bodies, soil, and the ecological environment, endangering human health and ecological balance. The main methods for treating sodium metabisulfite production wastewater include chemical precipitation, oxidation-reduction, and adsorption.

[0003] In existing wastewater treatment technologies, chemical precipitation is a commonly used method. However, when recovering the supernatant after precipitation, the flowing liquid easily agitates the sediment at the bottom, causing secondary turbidity and affecting the treatment effect. Therefore, there is an urgent need for equipment that can avoid sediment agitation and improve wastewater treatment efficiency. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a wastewater treatment device for sodium metabisulfite production, thereby resolving the issues raised in the background section.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a sodium metabisulfite production wastewater treatment equipment, including a sedimentation tank (1), a receiving shell (2) is connected to the outside of the sedimentation tank (1), mounting plates (3) are symmetrically installed on the outer wall of the sedimentation tank (1), and a driving component is provided between the mounting plates (3), an L-shaped connecting rod (7) is provided in the sedimentation tank (1), and a water layer isolation component is provided on the L-shaped connecting rod (7), and a cleaning component is provided in the sedimentation tank (1); The water layer isolation component includes an isolation plate (8), which is slidably inserted into the housing (2), and the isolation plate (8) is used to isolate the water layer at the bottom of the sedimentation tank (1).

[0006] Preferably, the drive assembly includes a lead screw (4), a motor (5) and a threaded block (6). The lead screw (4) is rotatably mounted between the mounting plates (3), and the threaded block (6) is threaded onto the lead screw (4). The motor (5) is mounted on the outer wall of the mounting plate (3), and the motor (5) is used to drive the lead screw (4) to rotate.

[0007] Preferably, an L-shaped connecting rod (7) is installed on the threaded block (6), and the bottom of the L-shaped connecting rod (7) is installed on the top of the isolation plate (8).

[0008] Preferably, a triangular drain pipe (15) is installed at the bottom of the sedimentation tank (1), and the triangular drain pipe (15) is used to discharge the sediment.

[0009] Preferably, the cleaning assembly includes a connecting rod (10), a scraper (11), and a conical float (12). A rectangular area (9) is provided at the end of the isolation plate (8), and a scraper (11) is provided in the rectangular area (9). The connecting rod (10) is vertically installed on the top of the scraper (11), and the top of the connecting rod (10) slides through the isolation plate (8) to install the conical float (12). A spring (13) is sleeved on the connecting rod (10), and the spring (13) is located between the scraper (11) and the isolation plate (8). The scraper (11) is used to clean the bottom sediment in the sedimentation tank (1).

[0010] Preferably, the top of the scraper (11) is vertically symmetrically equipped with guide posts (14), and the top of the guide posts (14) slides through the isolation plate (8). The guide posts (14) are used to guide the scraper (11).

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. Excellent isolation effect: The physical isolation of the isolation plate completely solves the problem of stirring the sediment during the recovery of clarified liquid, and improves the stability of the treated water quality.

[0012] 2. Highly efficient cleaning: The cleaning components are linked with the isolation plate, and the scraper always stays in contact with the bottom of the pool. Combined with the triangular drain pipe, it greatly reduces sediment residue and lowers the cost of manual cleaning. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the sedimentation tank (1) of this utility model.

[0015] In the diagram: 1. Sedimentation tank; 2. Receiving shell; 3. Mounting plate; 4. Lead screw; 5. Motor; 6. Threaded block; 7. L-shaped connecting rod; 8. Isolation plate; 9. Rectangular area; 10. Connecting rod; 11. Scraper; 12. Conical float; 13. Spring; 14. Guide column; 15. Triangular drain pipe. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3 This utility model provides a technical solution: a sodium metabisulfite production wastewater treatment device, including a sedimentation tank, a receiving shell connected to the outside of the sedimentation tank, mounting plates symmetrically mounted on the outer wall of the sedimentation tank, and a driving component between the mounting plates, an L-shaped connecting rod inside the sedimentation tank, and a water layer isolation component on the L-shaped connecting rod, and a cleaning component inside the sedimentation tank; The water layer isolation component includes an isolation plate, which is slidably inserted into the housing, and the isolation plate is used to isolate the water layer at the bottom of the sedimentation tank. The drive assembly includes a lead screw, a motor, and a threaded block. The lead screw is rotatably mounted between the mounting plates, and the threaded block is threaded onto the lead screw. The motor is mounted on the outer wall of the mounting plate and is used to drive the lead screw to rotate. Specifically, in the wastewater treatment process, when the sodium metabisulfite production wastewater enters the sedimentation tank, after a period of sedimentation, the pollutants in the water will form precipitates and settle at the bottom of the tank. At this time, the motor is started, and the motor's output shaft drives the lead screw to rotate between the mounting plates. Since the threaded block is threadedly connected to the lead screw, the rotation of the lead screw is converted into the lateral movement of the threaded block. The threaded block drives the isolation plate through the L-shaped connecting rod to slide from the housing into the sedimentation tank. After the isolation plate is inserted into the water, it can separate the water layer containing precipitates at the bottom of the sedimentation tank from the upper clear water layer. In this way, when the upper clear liquid is subsequently extracted, the bottom precipitates will not be stirred up by the flow of liquid, thus ensuring the purity of the upper clear liquid. The isolation plate is also designed to break through boiling water.

[0018] Furthermore, an L-shaped connecting rod is installed on the threaded block, and the bottom of the L-shaped connecting rod is installed on the top of the isolation plate; Furthermore, a triangular drain pipe is connected to the bottom of the sedimentation tank, and the triangular drain pipe is used to discharge the sediment. Specifically, the sediment cleaned by the scraper can be collected through the triangular drain pipe. When the electric valve on the triangular drain pipe is opened, the sediment is discharged under the action of gravity and water flow, with a small amount of clean water introduced to assist in rinsing, and enters the sludge thickening tank.

[0019] Furthermore, the cleaning assembly includes a connecting rod, a scraper, and a conical float. A rectangular area is provided at the end of the isolation plate, and a scraper is provided within the rectangular area. A connecting rod is vertically installed on the top of the scraper, and a conical float is installed on the top of the connecting rod that slides through the isolation plate. A spring is sleeved on the connecting rod, and the spring is located between the scraper and the isolation plate. The scraper is used to clean the sediment at the bottom of the sedimentation tank. Specifically, when the sedimentation tank is full of liquid, the conical float rises due to buoyancy, and the connecting rod drives the scraper upward, so that it is housed in the rectangular area of ​​the partition plate, preventing the scraper from interfering with the sedimentation process. When the liquid in the sedimentation tank is discharged, the buoyancy of the conical float disappears, and under the action of gravity, it drives the connecting rod and the scraper downward. At the same time, the elastic force of the spring pushes the scraper, so that it always fits tightly against the bottom of the sedimentation tank. When the partition plate moves towards the housing shell under the action of the drive component, the scraper moves synchronously with the partition plate to scrape and clean the sediment at the bottom of the sedimentation tank, and pushes the sediment to the triangular drain pipe for centralized discharge. The state of the conical float changes with the liquid volume in the tank, automatically switching between the scraper's work in the sedimentation and cleaning stages without the need for additional control devices. This coordinates with the overall operation of the equipment, improving the ease of operation and automation. Simultaneously, the conical float's shape has the ability to break up water. When the baffle plate moves laterally under the action of the drive component, it drives the cleaning components to move laterally synchronously through related structures, and the conical float moves laterally accordingly. Its conical shape effectively breaks up the water in the sedimentation tank during lateral movement, reducing water resistance on the float and allowing it to move more smoothly with the baffle plate. This ensures that the scraper and other cleaning components move laterally synchronously with the baffle plate, guaranteeing the stability of the sediment at the bottom of the sedimentation tank. If the float lacks the ability to break water when moving laterally, it is prone to significant disturbance due to water resistance, which may impact the upper and lower water layers separated by the baffle plate, or even stir up bottom sediment. The lateral water-breaking ability of the cone-shaped float can reduce this disturbance, maintain the relative stability of the water layers on both sides of the baffle plate, and ensure that the isolation effect is not affected by the lateral movement of the cleaning components.

[0020] Furthermore, guide posts are vertically and symmetrically installed on the top of the scraper, and the top of each guide post slides through the partition plate. The guide posts are used to guide the scraper. Specifically, the guide column slides along the partition plate during the up-and-down and lateral movement of the scraper, which can effectively prevent the scraper from deviating or tilting, ensuring that the scraper always maintains a stable posture and contacts the bottom of the sedimentation tank, thus guaranteeing the uniformity and thoroughness of the cleaning effect.

[0021] The workflow of this embodiment is as follows: The first step is the wastewater sedimentation stage: the wastewater from sodium metabisulfite production is introduced into the sedimentation tank, and a precipitant such as lime or sulfide is added. After the wastewater has settled, a clear liquid is formed on the upper layer and a sediment is formed on the lower layer.

[0022] The second step is the water layer isolation stage: Start the motor, and the motor drives the lead screw to rotate. The threaded block drives the isolation plate to slide from the receiving shell into the sedimentation tank through the L-shaped connecting rod, and inserts it into the water to isolate the upper clear liquid from the lower sediment.

[0023] The third stage is the recovery of the clarified liquid: the isolated upper clarified liquid is recovered through the supernatant outlet of the sedimentation tank. Due to the obstruction of the isolation plate, the sediment will not be stirred, ensuring the purity of the recovered liquid.

[0024] The fourth stage is sediment cleaning and discharge: After recycling is completed, the motor is started in reverse, which drives the isolation plate to move towards the collection shell, and at the same time drives the cleaning components to move laterally at the bottom of the pool; the scraper adheres to the bottom of the pool under the action of the buoyancy of the conical float and the elasticity of the spring, scraping the sediment towards the triangular drain pipe; the drain pipe valve is opened and the sediment is discharged.

[0025] Reset phase: After cleaning, the isolation plate is completely retracted into the receiving shell, the equipment returns to its initial state, and awaits the next round of wastewater treatment.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment device for sodium metabisulfite production, characterized in that, The sedimentation tank (1) is connected to a receiving shell (2) on the outside of the sedimentation tank (1). The outer wall of the sedimentation tank (1) is symmetrically equipped with mounting plates (3), and a driving assembly is provided between the mounting plates (3). An L-shaped connecting rod (7) is provided inside the sedimentation tank (1), and a water layer isolation assembly is provided on the L-shaped connecting rod (7). A cleaning assembly is provided inside the sedimentation tank (1). The water layer isolation component includes an isolation plate (8), which is slidably inserted into the housing (2), and the isolation plate (8) is used to isolate the water layer at the bottom of the sedimentation tank (1).

2. The sodium metabisulfite production wastewater treatment equipment according to claim 1, characterized in that, The drive assembly includes a lead screw (4), a motor (5) and a threaded block (6). The lead screw (4) is rotatably mounted between the mounting plates (3), and the threaded block (6) is threaded on the lead screw (4). The motor (5) is mounted on the outer wall of the mounting plate (3), and the motor (5) is used to drive the lead screw (4) to rotate.

3. The sodium metabisulfite production wastewater treatment equipment according to claim 2, characterized in that, An L-shaped connecting rod (7) is installed on the threaded block (6), and the bottom of the L-shaped connecting rod (7) is installed on the top of the isolation plate (8).

4. The sodium metabisulfite production wastewater treatment equipment according to claim 1, characterized in that, The bottom of the sedimentation tank (1) is connected to a triangular drain pipe (15), which is used to discharge sediment.

5. The sodium metabisulfite production wastewater treatment equipment according to claim 1, characterized in that, The cleaning assembly includes a connecting rod (10), a scraper (11), and a conical float (12). A rectangular area (9) is provided at the end of the isolation plate (8), and a scraper (11) is provided in the rectangular area (9). The connecting rod (10) is vertically installed on the top of the scraper (11), and the top of the connecting rod (10) slides through the isolation plate (8) to install the conical float (12). A spring (13) is sleeved on the connecting rod (10), and the spring (13) is located between the scraper (11) and the isolation plate (8). The scraper (11) is used to clean the bottom sediment in the sedimentation tank (1).

6. The sodium metabisulfite production wastewater treatment equipment according to claim 5, characterized in that, The top of the scraper (11) is vertically symmetrically equipped with guide posts (14), and the top of the guide posts (14) slides through the isolation plate (8). The guide posts (14) are used to guide the scraper (11).

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