Automatic treatment system for production wastewater

Abstract

The utility model relates to an automatic treatment system for production wastewater, which comprises a wastewater collecting tank and a weighing module, the wastewater collecting tank is flexibly connected with a wastewater inlet pipeline and a wastewater discharge pipeline, the wastewater inlet pipeline is connected with an inlet control valve, the wastewater discharge pipeline is connected with a discharge control valve, and the weighing module is connected with the wastewater collecting tank. The inlet control valve and the discharge control valve are interlocked with the weighing module; the waste water collecting tank is further connected with a pressure transmitter and a pressure adjusting assembly, the pressure adjusting assembly comprises a gas inlet pipeline and a gas outlet pipeline which are connected to the waste water collecting tank, the gas inlet pipeline is connected with a first control valve body and a gas supply gas source, and the gas outlet pipeline is connected with a second control valve body. The full-automatic treatment system for the production wastewater provided by the utility model can realize the functions of automatic collection, temporary storage, discharge, abnormal alarm and the like of the wastewater, eliminates tedious links of pipeline connection and manual wastewater pumping, improves the safety, and effectively improves the working efficiency at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to an automatic production wastewater treatment system. Background Art

[0002] At present, the wastewater collection and discharge system in the production workshop is composed of a receiving tank, a liquid level meter, and a material transfer pump, with a simple structure and a low degree of automation. The liquid level monitoring needs to be manually viewed on the screen of the main control room, and the automatic material transfer operation cannot be realized. Before each material transfer, the material transfer pump and pipeline need to be manually connected and monitored on site by a dedicated person. If the material transfer pump is not turned off in time after the wastewater in the receiving tank is emptied, it will also cause energy waste.

[0003] On the other hand, since the liquid level is detected by using an ultrasonic level meter, the fluctuation of the liquid level during wastewater collection and discharge will affect the measurement of the level meter, making the data inaccurate, and long-term operation may also cause damage to the transfer pump.

[0004] Currently, before discharging wastewater into the wastewater receiving tank each time, it is necessary to manually confirm whether the liquid level in the tank meets the discharge requirements. If not, the wastewater needs to be emptied before the wastewater can be discharged. This requires downtime and waiting, and requires a lot of manpower to perform the wastewater pumping operation, which seriously affects production efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic production wastewater treatment system to at least partially solve the technical problems mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic production wastewater treatment system, comprising: a wastewater collection tank and a weighing module connected to the mounting leg position thereof, the wastewater collection tank being softly connected with a wastewater inlet pipeline and a wastewater outlet pipeline, the wastewater inlet pipeline being connected with an inlet control valve, the wastewater outlet pipeline being connected with a outlet control valve, and the inlet control valve and the outlet control valve being interlocked with the weighing module;

[0007] The wastewater collection tank is also connected to a pressure transmitter and a pressure regulating assembly for regulating the pressure inside the tank. The pressure regulating assembly includes a gas inlet pipeline and a gas exhaust pipeline connected to the wastewater collection tank. The gas inlet pipeline is connected to a first control valve body, the gas inlet pipeline is connected to an air supply source, and the gas exhaust pipeline is connected to a second control valve body.

[0008] In one embodiment, the wastewater discharge pipeline is further connected to a delivery pump body for liquid pumping.

[0009] In one embodiment, the delivery pump body adopts a pneumatic diaphragm pump. By adopting a pneumatic diaphragm pump, electric drive can be avoided, thereby avoiding the occurrence of explosive accidents of flammable gas.

[0010] In one embodiment, a flow meter is connected to the outlet of the delivery pump body to measure the discharge amount of wastewater.

[0011] In one embodiment, the wastewater collection tank is also connected to a temperature sensor, which is used to monitor the temperature changes in the wastewater collection tank in real time to avoid abnormal temperature rise or fall.

[0012] In one embodiment, the gas inlet pipeline and the gas outlet pipeline are combined into a gas inlet and outlet pipeline, which is connected to a wastewater collection tank through the gas inlet and outlet pipeline to avoid interference with the metering accuracy of the weighing module caused by multiple pipeline connections.

[0013] In one embodiment, the first control valve body is a self-operated nitrogen supply valve for achieving accurate control of the nitrogen flow rate.

[0014] In one embodiment, the second control valve body adopts a single-call valve to enable one-way flow of gas, thereby preventing air from entering the wastewater collection tank and causing an increase in the concentration of combustible gas in the tank, thereby ensuring operational safety and reliability.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the fully automatic production wastewater treatment system provided by the utility model can automatically measure the amount of liquid in the wastewater collection tank by setting a weighing module, and can realize automatic wastewater pumping operation by interlocking with the valve body of the gas inlet pipeline and the gas outlet pipeline; further, through the pressure regulating component, the pressure of the wastewater collection tank can be adaptively adjusted to ensure that the pressure in the tank is in a normal state and that the oxygen content in the tank is appropriate. The utility model can realize the functions of automatic wastewater collection, temporary storage, discharge, abnormal alarm, etc., eliminate the cumbersome pipe connection and manual wastewater pumping links, improve safety, and effectively improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the fully automatic production wastewater treatment system in the embodiment of the utility model.

[0017] The meaning of each number in the figure is:

[0018] 1. Wastewater collection tank; 101. Mounting legs; 2. Weighing module; 3. Wastewater inlet pipeline; 4. Inlet control valve; 5. Wastewater discharge pipeline; 6. Discharge control valve; 7. Delivery pump body; 8. Soft connection structure; 9. Flow meter; 10. Pressure transmitter; 11. Gas inlet pipeline; 12. First control valve body; 13. Gas discharge pipeline; 14. Second control valve body; 15. Gas inlet and outlet pipelines; 16. Temperature sensor. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] See also Figure 1 This embodiment discloses an automatic production wastewater treatment system, including a wastewater collection tank 1, a weighing module 2 and an automatic control system.

[0022] The weighing module 2 is connected to the wastewater collection tank 1 and is used to measure the weight of the wastewater collection tank 1 and the wastewater inside. The mounting legs 101 of the wastewater collection tank 1 are mounted on the weighing module 2. To facilitate the installation or maintenance of the weighing module 2, a handle or lifting lug is provided on the wastewater collection tank 1 for easy lifting.

[0023] In one embodiment, the periphery of the weighing module 2 is further covered with a waterproof cover, which is sealed and connected to the mounting legs 101 to prevent waste water from penetrating and causing damage to the weighing module 2 .

[0024] The wastewater collection tank 1 is provided with a wastewater inlet end and a wastewater outlet end, the wastewater inlet end is connected to a wastewater inlet pipeline 3, the wastewater inlet pipeline 3 is connected to an inlet control valve 4 for on-off and flow control of the pipeline, the wastewater outlet end is connected to a wastewater outlet pipeline 5, the wastewater outlet pipeline 5 is connected to a discharge control valve 6 for on-off and flow control of the pipeline, and a delivery pump body 7 for liquid pumping, and the other end of the wastewater outlet pipeline 5 is connected to the plant wastewater treatment device. The inlet control valve 4, the discharge control valve 6 and the delivery pump body 7 are all interlocked with the weighing module 2, and the wastewater inlet timing, discharge timing, inlet amount and discharge amount are controlled according to the measurement of the weighing module 2 to realize automatic liquid discharge operation.

[0025] Various solvents contained in production wastewater are usually easy to volatilize flammable gases. When the concentration of flammable gases reaches a certain value, the electric drive system is prone to ignition, which can easily ignite the flammable gases and cause the risk of explosion. Therefore, in this embodiment, the delivery pump body 7 is preferably a pneumatic diaphragm pump to avoid the safety risks easily brought by the electric drive structure.

[0026] Specifically, the wastewater collection tank 1 is installed at the lowest point of the workshop, so that the wastewater flows into the wastewater collection tank 1 by gravity, so as to reduce the energy consumption when the wastewater is transferred as much as possible. In other embodiments not shown, a pumping structure can also be used to pump the wastewater. The wastewater collection tank 1 can select different materials or inner wall coatings according to the properties of the wastewater, such as stainless steel, fiberglass, glass lining, ceramic paint, etc., according to actual needs.

[0027] In actual application, during the operation of liquid inlet and outlet, wastewater will cause impact and fluctuation on the pipeline, making the weighing value unstable, and the deadweight of the pipeline will also interfere with the accuracy of measurement. In order to ensure the stability and measurement accuracy of the weighing module 2, in this embodiment, a soft connection structure 8 is added between the wastewater inlet pipeline 3 and the wastewater collection tank 1, between the wastewater discharge pipeline 5 and the wastewater collection tank 1, and other hard-connected pipelines to eliminate the impact of the impact of wastewater and the deadweight of the pipeline on the weighing value. Exemplarily, the bottom of the wastewater inlet pipeline 3 can be connected to the wastewater collection tank 1 with a soft retractable tube.

[0028] For example, the upper and lower limits of the weighing value of the weighing module 2 are preset in the automatic control system. When the weight in the wastewater collection tank 1 measured by the weighing module 2 reaches the upper limit, the inlet control valve 4 is closed, the discharge control valve 6 is opened, the switch valve of the delivery pump body 7 is opened, and the wastewater is discharged to the factory wastewater treatment device through the action of the delivery pump body 7. When the weight in the wastewater collection tank 1 measured by the weighing module 2 reaches the lower limit, the discharge control valve 6 is closed, the switch valve of the delivery pump body 7 is closed, and the wastewater discharge operation stops, realizing the fully automatic wastewater discharge operation.

[0029] In a preferred embodiment, a flow meter 9 is connected to the outlet of the delivery pump body 7, and the flow meter 9 is used to measure the discharge amount of the wastewater.

[0030] In actual application, when the liquid is being filled, the pressure in the wastewater collection tank 1 will increase. If the exhaust is not smooth, the pressure in the tank will continue to increase, which will cause a safety accident. When the wastewater is discharged, as the liquid level in the wastewater collection tank 1 decreases, the pressure in the wastewater collection tank 1 will also decrease. To ensure operational safety, in this embodiment, the wastewater collection tank 1 is connected to a pressure transmitter 10 for pressure monitoring, so as to detect abnormal pressure in the wastewater collection tank 1 in a timely manner and take countermeasures in a timely manner.

[0031] Correspondingly, the wastewater collection tank 1 is also connected to a pressure regulating assembly, which can adaptively adjust the pressure in the tank according to the pressure in the tank fed back by the pressure transmitter 10 to balance the pressure in the tank. Figure 1 The pressure regulating assembly includes a gas inlet pipeline 11 and a gas outlet pipeline 13 connected to the wastewater collection tank 1. The gas inlet pipeline 11 is connected to a first control valve body 12, and the gas outlet pipeline 13 is connected to a second control valve body 14. In order to ensure that the oxygen content in the wastewater collection tank 1 is appropriate and the safety of the system, the gas inlet pipeline 11 is connected to an inert gas such as nitrogen. When the pressure in the tank increases and reaches the preset pressure value, the second control valve body 14 automatically opens, and the gas in the tank is discharged into the workshop exhaust gas treatment system through the gas outlet pipeline 13. If the exhaust is not smooth, the pressure in the tank continues to rise, and the upper limit alarm value of the pressure transmitter 10 is set, and the feedback is fed back to the main control room, so that the workshop can troubleshoot the problem in time. During the discharge operation, when the pressure in the tank decreases and is lower than the preset pressure value, the first control valve body 12 is opened, and nitrogen is added to the tank through the gas inlet pipeline 11 to maintain the pressure in the tank at a slightly positive pressure. At the same time, the lower limit alarm value of the pressure transmitter 10 is set. When the pressure is lower than the set value for a long time and does not return to the normal range, an alarm prompt is issued.

[0032] The gas inlet pipeline 11 and the gas outlet pipeline 13 can be connected to the wastewater collection tank 1 respectively, or they can be collected in the same pipeline: the gas inlet and outlet pipeline 15, which is softly connected to the wastewater collection tank 1 through the gas inlet and outlet pipeline 15. The latter has a simpler structure and can avoid interference with the measurement accuracy of the weighing module 2 caused by multiple pipeline connections. Preferably, the aforementioned pressure transmitter 10 is connected to the gas outlet pipeline 13, and the instrument's own gravity is removed through the soft connection to further ensure the measurement accuracy of the weighing module 2 and prevent weight value fluctuations caused by instrument maintenance and replacement.

[0033] In a preferred embodiment, the second control valve body 14 on the gas discharge pipeline 13 adopts a single-call valve to make the gas flow in one direction, prevent air from entering the wastewater collection tank 1 and causing the concentration of combustible gas in the tank to increase, and ensure the safety and reliability of the operation. On the other hand, the single-call valve is a mechanical structure, not easy to damage, and can be automatically opened when the pressure in the tank increases to avoid the occurrence of safety accidents. The first control valve body 12 on the gas inlet pipeline 11 adopts a self-operated nitrogen supply valve, which can detect the pressure in the tank without the need for an external signal control line. When the pressure at the storage tank end drops to a certain value, the valve automatically opens to replenish nitrogen. When the pressure reaches the set upper limit, the valve automatically closes. It is sensitive to reaction and has high control accuracy, and can achieve accurate control of the nitrogen flow rate.

[0034] In another preferred embodiment, the wastewater collection tank 1 is also connected to a temperature sensor 16, which is used to monitor the temperature changes in the wastewater collection tank 1 in real time. When abnormal temperature rise or drop occurs, prompts are issued in time to facilitate the workshop to promptly discover and solve the problem.

[0035] In another preferred embodiment, the wastewater collection tank 1 is further provided with a sealed sampling port, through which it is possible to observe at any time whether the material in the tank has changed, thereby ensuring the safety of the operation to a greater extent.

[0036] In this embodiment, the automatic control system adopts a DCS control system, which can perform logic program editing according to actual needs. By performing real-time monitoring and logical judgment on the weighing module 2, pressure transmitter 10, temperature sensor 16, etc., it can realize automatic program control of each valve and pump body, thereby realizing the full process operation of production wastewater collection, transfer, and early warning.

[0037] Before use, the system needs to calibrate the zero point of the weighing module 2, determine the current value as the empty state of the wastewater collection tank 1, and set a maximum weight (W1) and a minimum weight (W2). When the weight in the tank reaches W1, the data is transmitted to the automatic control system, and an open signal is given to the switch valve of the delivery pump body 7. The delivery pump body 7 starts working, and the discharge control valve 6 between the delivery pump body 7 and the wastewater collection tank 1 is opened, and the automatic wastewater discharge operation begins. When the weight in the receiving tank reaches the minimum value (W2), the system automatically stops, the material transfer operation is completed, and the corresponding delivery pump body 7 and discharge control valve 6 are closed.

[0038] In order to ensure the pressure balance of the system, a single call valve and a self-operated nitrogen supply valve are installed on the gas inlet and outlet pipes 15 at the top of the wastewater collection tank 1. The self-operated nitrogen supply valve is set to open below a certain pressure and closed above a certain pressure. When the pressure in the tank decreases during the wastewater discharge process, nitrogen can be replenished in time to prevent air from entering. The single call valve is set to open above a certain pressure. When the pressure in the tank increases due to temperature or other factors, the pressure can be relieved through the single call valve to ensure the pressure balance in the wastewater collection tank 1. At the same time, the tank body is equipped with a temperature sensor 16. Once the set limit is exceeded, a prompt alarm is issued to facilitate the operator to arrive at the scene for timely disposal.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An automatic production wastewater treatment system, characterized in that: include: A wastewater collection tank (1) and a weighing module (2) connected to the position of the mounting leg (101) thereof, wherein the wastewater collection tank (1) is softly connected to a wastewater inlet pipeline (3) and a wastewater outlet pipeline (5), the wastewater inlet pipeline (3) is connected to an inlet control valve (4), the wastewater outlet pipeline (5) is connected to a outlet control valve (6), and both the inlet control valve (4) and the outlet control valve (6) are interlocked with the weighing module (2); The wastewater collection tank (1) is also connected to a pressure transmitter (10) and a pressure regulating assembly for regulating the pressure inside the tank, the pressure regulating assembly comprising a gas inlet pipeline (11) and a gas outlet pipeline (13) connected to the wastewater collection tank (1), the gas inlet pipeline (11) being connected to a first control valve body (12), the gas inlet pipeline (11) being connected to an air supply source, and the gas outlet pipeline (13) being connected to a second control valve body (14).

2. The automatic production wastewater treatment system according to claim 1 is characterized in that: The wastewater discharge pipeline (5) is also connected to a delivery pump body (7).

3. The automatic production wastewater treatment system according to claim 2 is characterized in that: The delivery pump body (7) adopts a pneumatic diaphragm pump.

4. The automatic production wastewater treatment system according to claim 2 is characterized in that: The outlet of the delivery pump body (7) is connected to a flow meter (9).

5. The automatic production wastewater treatment system according to claim 1 is characterized in that: The wastewater collection tank (1) is also connected to a temperature sensor (16).

6. The automatic production wastewater treatment system according to claim 1 is characterized in that: The gas inlet pipeline (11) and the gas outlet pipeline (13) are combined into a gas inlet and outlet pipeline (15), which is connected to the wastewater collection tank (1) via the gas inlet and outlet pipeline (15).

7. The automatic production wastewater treatment system according to claim 1 is characterized in that: The first control valve body (12) is a self-operated nitrogen supply valve.

8. The automatic production wastewater treatment system according to claim 1 is characterized in that: The second control valve body (14) is a single call valve.

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