Intelligent flow control device suitable for industrial wastewater treatment

Abstract

The utility model discloses an intelligent flow control device suitable for industrial wastewater treatment, which comprises an adjusting tank, the bottom end of the adjusting tank is fixedly provided with a base, and the top end of the adjusting tank is detachably provided with a top cover. According to the utility model, the stability of the water supply flow can be realized, the matching of the water supply flow and the water inlet flow is ensured, the rationality of the set water supply flow is automatically judged in a fixed period, the hysteresis of flow regulation is greatly reduced, the optimal flow control suggestion is automatically given in a fixed period, the intelligent level is improved, and the dependence on experience is reduced; wherein the water level gauge body is arranged in an isolation area, the water level of the isolation area is the same as that of a water storage area due to the principle of a communicating vessel, water in the isolation area is isolated through a blocking net, no impurity pollutes the water, a water baffle can be closed through an adjusting assembly, and after the water in the isolation area is emptied, the water level gauge body is cleaned and disassembled, so that the water level gauge is convenient to clean. The maintenance is convenient, and the emptying of all the adjusting tanks is not needed.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an intelligent flow control device suitable for industrial wastewater treatment. Background Technology

[0002] In the field of industrial wastewater treatment, flow control is a core element in ensuring the efficient operation of the system. Its accuracy and stability are directly related to treatment costs, effluent quality compliance rates, and the long-term reliability of the process equipment. Industrial wastewater has a complex composition, containing high concentrations of organic matter, heavy metals, or toxic substances. Treatment processes typically involve physical sedimentation, biochemical reactions, membrane separation, or multi-stage advanced treatment units.

[0003] Each treatment unit has a strict threshold for adaptability of its flow rate per unit time: if the influent flow rate fluctuates too much, it may cause problems such as disturbance of the sludge layer in the sedimentation tank, inhibition of microbial activity in the biochemical reactor, and a sudden increase in the transmembrane pressure difference of the membrane module, which may lead to a decrease in treatment efficiency or even process collapse.

[0004] Traditional flow control in wastewater treatment suffers from the following shortcomings: First, the adjustment method is relatively mechanical, relying mainly on manual operation or fixed program settings. When the influent flow fluctuates, the system cannot adjust parameters in a timely manner, easily causing the water residence time in the treatment equipment to deviate from the normal range, affecting treatment efficiency. Second, traditional feedback adjustment mechanisms have a slow response speed, taking several minutes or even longer from detecting a flow change to actual adjustment. During this period, excessive fluctuations in treatment parameters may occur, such as unstable dissolved oxygen concentration in the biological treatment tank or abnormal pressure in the membrane filtration equipment. Furthermore, due to the lack of intelligent prediction functions based on water quality data, operators can only repeatedly try to adjust the flow distribution based on experience. When facing complex water quality conditions, it is difficult to balance energy consumption control and treatment effect, resulting in poor process system stability and significant fluctuations in operating costs and water quality compliance rates.

[0005] Finally, before wastewater enters the system, a level gauge is usually placed in a wastewater equalization tank to observe the amount of wastewater stored, thus facilitating timely replenishment. However, existing level gauges are generally placed directly in the equalization tank, which is filled with wastewater. Impurities in the wastewater can corrode the level gauge, adhering to its surface over time. Furthermore, since the level gauge is in wastewater, it needs to be removed for maintenance. Because the surface of the level gauge is contaminated with industrial wastewater, it needs to be cleaned after removal, otherwise it will affect the health of maintenance personnel, making maintenance inconvenient. Utility Model Content

[0006] The purpose of this invention is to provide an intelligent flow control device suitable for industrial wastewater treatment, so as to solve the above-mentioned shortcomings in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an intelligent flow control device suitable for industrial wastewater treatment, comprising an equalization tank, a base fixedly installed at the bottom of the equalization tank, a top cover detachably installed at the top of the equalization tank, an output pipe fixedly installed on the base, one end of the output pipe connected to the bottom of the equalization tank, an input pipe connected to the side wall of the equalization tank, a variable frequency water pump and a flow meter respectively arranged sequentially on the output pipe, a partition plate arranged inside the equalization tank, the partition plate dividing the equalization tank into a water storage area and an isolation area, the output pipe and the input pipe both connected to the water storage area, an installation groove and a water level gauge body arranged inside the installation groove fixedly installed on the inner wall of the isolation area, and an equalization component arranged on the partition plate.

[0008] As a further description of the above technical solution: the adjustment component includes a through groove formed on the partition plate, the lower end of the through groove passing through the partition plate to connect the water storage area and the partition area, an adjustment plate is provided inside the through groove, and a connecting groove is formed on the adjustment plate to divide the adjustment plate into an adjustment part and a water-blocking part, and the water-blocking part is slidably adapted to the through groove.

[0009] As a further description of the above technical solution: the adjustment part is disposed outside the adjustment pool and slides through the top cover and is connected to the top cover. A spring is connected between the connecting groove and the edge of the top of the adjustment pool. A threaded hole is opened on the adjustment part. A bolt is provided on the outer wall of the adjustment pool. The bolt and the threaded hole are adapted to each other.

[0010] As a further description of the above technical solution: barrier nets are provided on both sides of the lower end of the channel, and a slot is opened at the bottom of the regulating pool, which is located directly below the water-blocking part.

[0011] As a further description of the above technical solution: a water outlet valve is installed at the bottom of the isolation zone.

[0012] As a further description of the above technical solution: a wastewater tank is provided at the bottom of the outlet valve.

[0013] This invention provides an intelligent flow control device suitable for industrial wastewater treatment. It offers the following advantages: a regulating tank stores and regulates wastewater, balancing the influent flow rate with the supply flow rate to subsequent treatment units; a water level gauge detects and indicates the liquid level; a variable frequency water pump transports wastewater from the regulating tank to the subsequent treatment units; and a flow meter detects and indicates the flow rate, ensuring stable supply flow while matching the influent flow rate. The device periodically and automatically assesses the rationality of the set supply flow rate, significantly reducing the lag in flow regulation. It also periodically provides optimal control flow recommendations, improving intelligence and reducing reliance on experience. The water level gauge is located in an isolation zone, where the water level is the same as in the storage zone due to the communicating vessel principle. The water in the isolation zone is isolated by a barrier net, preventing contamination from impurities. The regulating components can seal the baffle plate, allowing the water in the isolation zone to be drained. After cleaning and disassembling the water level gauge, maintenance is convenient without needing to empty the entire regulating tank.

[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0015] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an intelligent flow control device for industrial wastewater treatment proposed in this utility model.

[0017] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective;

[0018] Figure 3 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0019] Figure 4 This is a side sectional view of the present invention.

[0020] Figure 5 For the present utility model Figure 4 A magnified structural diagram at point A;

[0021] Figure 6 This is a three-dimensional structural diagram of the partition plate of this utility model;

[0022] Figure 7 This is a top-view cross-sectional structural diagram of the present invention.

[0023] Legend:

[0024] 1. Regulating tank; 101. Water storage area; 102. Isolation area; 2. Top cover; 3. Base; 4. Output pipe; 5. Variable frequency water supply pump; 6. Flow meter; 7. Divider plate; 8. Through groove; 9. Regulating plate; 901. Water blocking part; 902. Regulating part; 903. Connecting groove; 10. Threaded hole; 11. Spring; 12. Bolt; 13. Input pipe; 14. Barrier mesh; 15. Slot; 16. Outlet valve; 17. Wastewater tank; 18. Mounting groove; 19. Water level gauge body. Detailed Implementation

[0025] 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.

[0026] Reference Figures 1-7 An intelligent flow control device for industrial wastewater treatment includes an equalization tank 1. A base 3 is fixedly installed at the bottom of the equalization tank 1, and a top cover 2 is detachably installed at the top. An output pipe 4 is fixedly installed on the base 3, with one end of the output pipe 4 connected to the bottom of the equalization tank 1. An input pipe 13 is installed along the side wall of the equalization tank 1. A variable frequency water pump 5 and a flow meter 6 are sequentially installed on the output pipe 4. A partition plate 7 is installed inside the equalization tank 1, dividing it into a water storage area 101 and an isolation area 102. Both the output pipe 4 and the input pipe 13 are connected to the water storage area 101. An installation groove 18 and a water level gauge body 19 installed inside the installation groove 18 are fixedly installed on the inner wall of the isolation area 102. An equalization assembly is installed on the partition plate 7. The equalization tank 1 is used to store and regulate wastewater, balancing the influent flow rate with the subsequent treatment flow rate. The water supply flow rate is controlled by a water level gauge 19, which detects and indicates the liquid level. A variable frequency water pump 5 is used to transport sewage from the inlet regulating tank 1 to the subsequent treatment unit. A water supply flow meter 6 detects and indicates the flow rate, which can stabilize the water supply flow rate and ensure the matching of the water supply flow rate with the inlet flow rate. The system automatically judges the rationality of the set water supply flow rate at regular intervals, greatly reducing the lag in flow regulation. It also automatically provides the best control flow rate suggestion at regular intervals, improving the level of intelligence and reducing reliance on experience. The water level gauge 19 is located in the isolation zone 102. The water level in the isolation zone 102 is the same as that in the water storage zone 101 due to the principle of communicating vessels. The water in the isolation zone 102 is isolated by the barrier net 14, so no impurities will cause pollution. The baffle plate can be closed by the regulating component. After the water in the isolation zone 102 is drained, the water level gauge 19 can be cleaned and disassembled, which facilitates its maintenance without having to empty the entire regulating tank 1. The water level gauge body 19 and the mounting slot 18 can be fixed by plugging or screwing, depending on the model of the water level gauge body 19.

[0027] The PID control logic of the above-mentioned variable frequency water supply pump 5 is as follows:

[0028] Start the water supply pump (start frequency = 15HZ). After a 2-second delay, determine whether the pump is running based on the pump feedback signal. If the pump is not running, issue an alarm signal. If the pump is running, wait 10 seconds for the pump to stabilize before manually setting the coarse operating frequency. This coarse operating frequency is calculated manually: Coarse frequency = Coarse water volume / Rated pump flow rate × 50HZ.

[0029] After setting the operating frequency, wait 10 seconds, then set the PID (PID parameters: PV = water supply flow rate, SP = set water supply flow rate = coarse water volume (set value), MV = water pump frequency set value) SP = coarse water volume, put the PID automatic control into operation, and start the flow rate reasonable judgment timing at the same time.

[0030] During automatic control operation, an unreasonable operating frequency is detected: if 15Hz≤P or P≥50Hz (lasting 300s), an alarm signal is issued to remind manual intervention for adjustment; if no unreasonable operating frequency alarm is detected, the PID automatic control operation is maintained.

[0031] After the PID automatic control is put into operation, a 1800-second delay is set to judge the reasonableness of the flow rate: if the change value of the liquid level in regulating tank 1 = Ht (current liquid level in regulating tank 1) - H(t-1800) (liquid level in regulating tank 1 1800 seconds ago) ≤ 0.3m (set value), the flow rate is reasonable, the timing is restarted, and the flow rate reasonableness is judged again after a 1800-second delay, and the process is repeated; if the change value of the liquid level in regulating tank 1 = Ht (current liquid level in regulating tank 1) - H(t-1800) (liquid level in regulating tank 1 1800 seconds ago) > 0.3m (set value), the flow rate is unreasonable, and the system gives a flow rate suggestion: suggested flow rate = set water supply flow rate + 2 × area of ​​regulating tank 1 (set value) × (Ht (current liquid level in regulating tank 1) - H(t-1800) (liquid level in regulating tank 1 1800 seconds ago)). The suggested flow rate is given and then manually confirmed. If it is not manually confirmed (default value), the PID automatic control will continue to run. If it is manually confirmed, the SP will be automatically adjusted to the suggested flow rate, and the automatic control will run at this value, and the process will be repeated.

[0032] As a preferred technical solution of this embodiment, the adjustment component includes a through groove 8 formed on the partition plate 7. The lower end of the through groove 8 passes through the partition plate 7, connecting the water storage area 101 and the partition area. An adjustment plate 9 is provided inside the through groove 8. A connecting groove 903 is formed on the adjustment plate 9, which divides the adjustment plate 9 into an adjustment part 902 and a water-blocking part 901. The water-blocking part 901 is slidably adapted to the through groove 8. The opening of the through groove 8 enables the water levels of the water storage area 101 and the isolation area 102 to be level. By adjusting the water-blocking part 901 downward, the isolation area 102 and the water storage area 101 can be separated, and the wastewater in the isolation area 102 can be drained, so that the water level gauge body 19 can be disassembled and repaired.

[0033] As a preferred technical solution of this embodiment, the adjusting part 902 is disposed outside the adjusting pool 1 and slides through the top cover 2 and is connected to the top cover 2. A spring 11 is connected between the connecting groove 903 and the edge of the top of the adjusting pool 1. A threaded hole 10 is provided on the adjusting part 902. A bolt 12 is provided on the outer wall of the adjusting pool 1. The bolt 12 and the threaded hole 10 are mutually adapted. The function of the spring 11 is to keep the baffle plate in an upward state. After the baffle plate is moved downward, the adjusting part 902 is locked by the bolt 12, so that the baffle plate can block the through groove 8.

[0034] As a preferred technical solution of this embodiment, the lower end of the through groove 8 is provided with barrier nets 14 on both sides, and the bottom end of the regulating pool 1 is provided with a slot 15, which is located directly below the water-blocking part 901; the water-blocking part 901 can further increase its sealing performance by being inserted into the slot 15.

[0035] As a preferred technical solution in this embodiment, a water outlet valve 16 is connected and installed at the bottom end of the isolation zone 102; the water in the isolation zone 102 can be released through the water outlet valve 16.

[0036] As a preferred technical solution in this embodiment, a wastewater tank 17 is provided at the bottom of the outlet valve 16; the wastewater discharged from the isolation zone 102 can be received through the wastewater tank 17 for convenient subsequent recycling.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An intelligent flow control device suitable for industrial wastewater treatment, comprising an equalization tank (1), a base (3) fixedly installed at the bottom of the equalization tank (1), a top cover (2) detachably installed at the top of the equalization tank (1), an output pipe (4) fixedly installed on the base (3), one end of the output pipe (4) being connected to the bottom of the equalization tank (1), an input pipe (13) being installed in connection with the side wall of the equalization tank (1), and a variable frequency water pump (5) and a flow meter (6) being sequentially arranged on the output pipe (4), characterized in that, The regulating tank (1) is provided with a partition plate (7) inside, which divides the regulating tank (1) into a water storage area (101) and an isolation area (102). The output pipe (4) and the input pipe (13) are both connected to the water storage area (101). The inner wall of the isolation area (102) is fixedly installed with an installation groove (18) and a water level gauge body (19) set inside the installation groove (18). The partition plate (7) is provided with a regulating component.

2. The intelligent flow control device for industrial wastewater treatment according to claim 1, characterized in that, The adjustment component includes a through groove (8) formed on the partition plate (7). The lower end of the through groove (8) passes through the partition plate (7) and connects the water storage area (101) and the partition area. An adjustment plate (9) is provided inside the through groove (8). A connecting groove (903) is formed on the adjustment plate (9). The connecting groove (903) divides the adjustment plate (9) into an adjustment part (902) and a water-blocking part (901). The water-blocking part (901) is slidably adapted to the through groove (8).

3. The intelligent flow control device for industrial wastewater treatment according to claim 2, characterized in that, The adjustment part (902) is located outside the adjustment pool (1) and slides through the top cover (2). A spring (11) is connected between the connecting groove (903) and the edge of the top of the adjustment pool (1). A threaded hole (10) is provided on the adjustment part (902). A bolt (12) is provided on the outer wall of the adjustment pool (1). The bolt (12) and the threaded hole (10) are mutually compatible.

4. The intelligent flow control device for industrial wastewater treatment according to claim 2, characterized in that, The lower end of the channel (8) is provided with barrier nets (14) on both sides, and the bottom end of the regulating pool (1) is provided with a slot (15), which is located directly below the water-blocking part (901).

5. The intelligent flow control device for industrial wastewater treatment according to claim 1, characterized in that, A water outlet valve (16) is connected to the bottom end of the isolation zone (102).

6. The intelligent flow control device for industrial wastewater treatment according to claim 5, characterized in that, Wastewater tank (17) is provided at the bottom of the outlet valve (16).

Images