Sewage treatment agent adding and mixing device for sewage treatment

Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment agent adding and mixing device for sewage treatment, which comprises a treatment box, a water inlet pipe, a water outlet pipe, an electromagnetic switch valve and a treatment agent storage tank, and further comprises a treatment agent metering mechanism fixedly arranged at the top of the treatment box, and the treatment agent metering mechanism is connected with the treatment agent storage tank. According to the invention, a flocculating agent can be accurately calculated and quantitatively added according to sewage components, automation and precision of chemical adding are realized, energy waste is avoided, and the cost is reduced; meanwhile, the stirring strength can be accurately regulated and controlled, the flocculation effect is guaranteed, sewage component abnormity is prevented, and the sewage treatment efficiency and quality are improved; in addition, when the sewage pollution is serious, the sewage and the flocculant are mixed more uniformly, the flocculation reaction is ensured to be sufficient, and the sewage treatment effect is further improved; and finally, a stirring intensity abnormity monitoring function is also provided, workers are reminded to overhaul equipment, and efficient and stable sewage treatment work is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment agent adding and mixing device for sewage treatment. Background Art

[0002] Among numerous sewage treatment methods, adding polyacrylamide flocculant for flocculation treatment is a widely used means. When adding polyacrylamide, an adding and mixing device will be used. For example, the publication number: CN115608229A discloses a sewage treatment agent adding and mixing device for sewage treatment.

[0003] However, in the actual sewage treatment operation process, the precise control of the stirring intensity of the stirrer of the adding and mixing device has become a major problem. If the stirring intensity of the stirrer is insufficient, the flocculant cannot be fully mixed with the sewage, making it difficult to exert its best flocculation effect, resulting in the difficulty of effectively precipitating impurities in the sewage and the difficulty of meeting the water quality standard after treatment. Once the stirring intensity is too high, it will damage the structure of the formed floccules, greatly reducing the flocculation effect, causing excessive energy consumption and increasing the sewage treatment cost. Although the intensity of the stirrer can be adjusted by controlling the motor, there will be energy loss during the transmission process. For example, when passing through components such as couplings and bearings, part of the energy will be consumed due to friction, etc. Moreover, the stirrer needs to continuously overcome various external forces of the water body, such as the viscous resistance of the sewage and the water flow impact force, resulting in a deviation between the actual output power of the motor and the theoretical set value, and further making the stirring intensity of the stirrer unable to accurately reach the expected value, leading to a reduction in the efficiency of sewage treatment.

[0004] Therefore, a sewage treatment agent adding and mixing device for sewage treatment is proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the above problems and provide a sewage treatment agent adding and mixing device for sewage treatment.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions: A sewage treatment agent adding and mixing device for sewage treatment includes a treatment tank, a water inlet pipe, a water outlet pipe, an electromagnetic on-off valve, and a treatment agent storage tank. The water inlet pipe and the treatment agent storage tank are both fixedly arranged on the top of the treatment tank. The water outlet pipe is fixedly arranged at the bottom of the side wall of the treatment tank. The electromagnetic on-off valve is arranged on the pipe wall of the water outlet pipe, and further includes: A treatment agent metering mechanism, fixedly arranged on the top of the treatment tank, and the treatment agent metering mechanism is connected to the treatment agent storage tank; A multi-parameter water quality analyzer, fixedly arranged at the bottom of the side wall of the treatment tank, and the detection end of the multi-parameter water quality analyzer extends into the interior of the treatment tank; The stirring motor is fixedly arranged on the outer side wall of the treatment tank. A stirrer is arranged inside the treatment tank, and one end of the stirrer is connected to the output end of the stirring motor; The moving stirring mechanism is arranged on the inner side wall of the treatment tank, and the moving stirring mechanism is connected to one end of the stirrer; The stirring intensity detection mechanism is arranged on the outer side wall of the treatment tank, and the stirring intensity detection mechanism is connected to the moving stirring mechanism; The PLC controller is fixedly arranged on the outer side wall of the treatment tank. The electromagnetic switch valve, the treatment agent metering mechanism, the multi-parameter water quality analyzer, the stirring motor, the moving stirring mechanism and the stirring intensity detection mechanism are all electrically connected to the PLC controller.

[0007] Preferably, the treatment agent metering mechanism includes a metering pump fixedly arranged on the top of the treatment tank. The output end of the metering pump is communicated with the bottom of the side wall of the treatment agent storage tank, and a treatment agent drain pipe is fixedly arranged at the output end of the metering pump, and the treatment agent drain pipe extends inward from the top of the treatment tank.

[0008] Preferably, the moving stirring mechanism includes a fixed cylinder fixedly arranged on the inner wall of the treatment tank. The two ends of the stirrer are respectively movably inserted with a first square rod and a second square rod. One end of the first square rod is fixedly connected to the output end of the stirring motor. One end of the stirrer extends into the fixed cylinder through a sealing component. The end of the second square rod far away from the stirrer is fixedly provided with a rotating shaft, and one end of the rotating shaft extends to the outside of the fixed cylinder. A fixed disk is rotatably arranged at the end of the stirrer located inside the fixed cylinder, and two electromagnetic telescopic rods are symmetrically and fixedly arranged between one side of the fixed disk and the inner side wall of the fixed cylinder.

[0009] Preferably, the electromagnetic telescopic rod includes a sleeve fixedly arranged on the inner side wall of the fixed cylinder. A connecting rod is inserted into the sleeve. An electromagnet block is fixedly arranged inside the sleeve. A permanent magnet block is fixedly arranged at one end of the connecting rod located inside the sleeve. A spring is fixedly arranged between the electromagnet block and the permanent magnet block.

[0010] Preferably, limiting sliders are fixedly arranged at both the bottom and the bottom of the fixed disk. Two limiting slide rods are symmetrically and fixedly arranged inside the fixed cylinder. The middle parts of the two limiting sliders are respectively slidably connected to the rod walls of the two limiting slide rods.

[0011] Preferably, the stirring intensity detection mechanism includes a box body fixedly arranged on the outer side wall of the treatment tank. A box cover is arranged on one side of the box body. A torque meter is installed on the inner side wall of the box body. One end of the rotating shaft extends into the interior of the box body and is fixedly provided with a coupling. The rotating end of the torque meter is fixedly connected to one end of the rotating shaft through the coupling. A pulse counter is fixedly arranged at the bottom of the box body.

[0012] Preferably, a hollow drain plate is fixedly arranged on the inner top wall of the treatment tank. The lower end of the treatment agent drain pipe extends into the interior of the hollow drain plate. A plurality of uniformly distributed drain holes are formed on the lower surface of the hollow drain plate. A wiping plate is fixedly arranged on the stirring blade of the stirrer, and the wiping plate can be arranged in contact with the lower surface of the hollow drain plate.

[0013] Preferably, the stirrer adopts a multi-blade structure, and three blades are in a group. A plurality of uniformly distributed liquid mixing holes are formed on the surface of the stirring blade of the stirrer.

[0014] Compared with the existing technology, the beneficial effects of the present invention are as follows: Through the arranged stirring intensity detection mechanism, the stirring intensity detection mechanism based on the strain gauge principle can detect the rotation intensity of the stirrer in real time and feed the data back to the PLC controller. The PLC controller can intelligently and automatically adjust the power of the stirring motor according to this, accurately control the stirring intensity of the stirrer, ensure the best flocculation effect, avoid the negative impact of improper stirring intensity on the flocculation effect and the quality of sewage treatment, prevent abnormal distribution of sewage components at the same time, ensure the accuracy of subsequent water quality index measurement, and improve the overall efficiency and quality of sewage treatment.

[0015] Through the arranged treatment agent metering mechanism and multi-parameter water quality analyzer, the multi-parameter water quality analyzer can detect the components of sewage. The PLC controller accurately calculates the required dosage of flocculant according to the detection data and controls the metering pump to add the flocculant quantitatively, realizing the automation and precision of chemical agent addition, improving the rationality of sewage treatment, avoiding energy waste, and reducing the cost of sewage treatment.

[0016] Through the arranged mobile stirring mechanism, when the sewage is severely polluted and the quantitative addition of the flocculant by the metering pump reaches a certain value, the mobile stirring mechanism can be automatically started. The mobile stirring mechanism can drive the stirrer to move left and right reciprocally in the treatment tank, and cooperate with the rotation of the stirrer itself to realize more uniform and efficient stirring of the sewage and polyacrylamide flocculant, ensure the full progress of the flocculation reaction, and further improve the sewage treatment effect. Description of the Drawings

[0017] Figure 1 is a three-dimensional view of a sewage treatment agent addition and mixing device for sewage treatment provided by the present invention; Figure 2 It is a stereoscopic diagram of another perspective of a sewage treatment agent adding and mixing device for sewage treatment provided by the present invention; Figure 3 It is a three-dimensional diagram of a treatment box of a sewage treatment agent adding and mixing device for sewage treatment provided by the present invention after being cut open; Figure 4 It is a three-dimensional diagram of a mobile stirring mechanism of a sewage treatment agent adding and mixing device for sewage treatment provided by the present invention; Figure 5 It is a stereoscopic diagram of an electromagnetic telescopic rod of a sewage treatment agent adding and mixing device for sewage treatment provided by the present invention; Figure 6 It is a stereoscopic diagram of a stirring intensity detection mechanism of a sewage treatment agent adding and mixing device for sewage treatment provided by the present invention.

[0018] In the figure: 1 treatment box, 2 water inlet pipe, 3 water outlet pipe, 4 electromagnetic switch valve, 5 treatment agent storage tank, 6 treatment agent metering mechanism, 61 metering pump, 62 treatment agent discharge pipe, 7 multi-parameter water quality analyzer, 8 stirring motor, 9 stirrer, 10 mobile stirring mechanism, 101 fixed cylinder, 102 first square rod, 103 second square rod, 104 rotating shaft, 105 fixed plate, 106 electromagnetic telescopic rod, 11 stirring intensity detection mechanism, 111 box body, 112 box cover, 113 torque meter, 114 coupling, 115 pulse counter, 12 PLC controller, 13 sleeve, 14 connecting rod, 15 electromagnetic block, 16 permanent magnet block, 17 spring, 18 limit slider, 19 limit slider, 20 hollow discharge plate, 21 discharge hole, 22 wiping plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figures 1-6 As shown, a sewage treatment agent adding and mixing device for sewage treatment includes a treatment box 1, an inlet pipe 2, an outlet pipe 3, an electromagnetic switch valve 4 and a treatment agent storage tank 5, the inlet pipe 2 and the treatment agent storage tank 5 are fixedly arranged on the top of the treatment box 1, the outlet pipe 3 is fixedly arranged on the bottom of the side wall of the treatment box 1, and the electromagnetic switch valve 4 is arranged on the pipe wall of the outlet pipe 3, and also includes: The treatment agent metering mechanism 6 is fixedly arranged on the top of the treatment tank 1. The treatment agent metering mechanism 6 is connected to the treatment agent storage tank 5. The treatment agent metering mechanism 6 includes a metering pump 61 fixedly arranged on the top of the treatment tank 1. The output end of the metering pump 61 is communicated with the bottom of the side wall of the treatment agent storage tank 5. And a treatment agent drain pipe 62 is fixedly arranged at the output end of the metering pump 61. And the treatment agent drain pipe 62 extends inward from the top of the treatment tank 1. The metering pump 61 can quantitatively extract the polyacrylamide flocculant inside the treatment agent storage tank 5 and discharge it into the inside of the treatment agent drain pipe 62. A hollow drain plate 20 is fixedly arranged on the inner wall of the top of the treatment tank 1. The lower end of the treatment agent drain pipe 62 extends into the inside of the hollow drain plate 20. A plurality of uniformly distributed drain holes 21 are formed on the lower surface of the hollow drain plate 20. The hollow drain plate 20 and the drain holes 21 can increase the discharge area of the polyacrylamide flocculant and improve the contact efficiency between the polyacrylamide flocculant and the sewage.

[0021] The multi-parameter water quality analyzer 7 is fixedly arranged at the bottom of the side wall of the treatment tank 1. The detection end of the multi-parameter water quality analyzer 7 extends into the inside of the treatment tank 1. In order to avoid the sediment at the bottom of the treatment tank 1 affecting the detection result of the multi-parameter water quality analyzer 7, it is necessary to stir the sewage first before detection.

[0022] The stirring motor 8 is fixedly arranged on the outer side wall of the treatment tank 1. A stirrer 9 is arranged inside the treatment tank 1. And one end of the stirrer 9 is connected to the output end of the stirring motor 8. The stirrer 9 adopts a multi-blade structure, and three blades are in a group. A plurality of uniformly distributed liquid mixing holes are formed on the surface of the stirring blades of the stirrer 9. The liquid mixing holes can increase the stirring fluidity of the sewage and the polyacrylamide flocculant and improve the quality of stirring and mixing. A wiping plate 22 is fixedly arranged on the stirring blade of the stirrer 9. And the wiping plate 22 can be in contact with the lower surface of the hollow drain plate 20. Since the drain holes 21 of the polyacrylamide flocculant may be blocked, the wiping plate 22 will be driven to rotate together when the stirrer 9 rotates, so that the drain holes 21 on the lower surface of the hollow drain plate 20 are cleaned by the wiping plate 22 to avoid blockage.

[0023] The moving stirring mechanism 10 is arranged on the inner side wall of the treatment tank 1, and the moving stirring mechanism 10 is connected to one end of the stirrer 9. The moving stirring mechanism 10 includes a fixed cylinder 101 fixedly arranged on the inner wall of the treatment tank 1. The two ends of the stirrer 9 are respectively movably inserted with a first square rod 102 and a second square rod 103. One end of the first square rod 102 is fixedly connected to the output end of the stirring motor 8. One end of the stirrer 9 extends into the interior of the fixed cylinder 101 through a sealing assembly. A rotating shaft 104 is fixedly arranged at the end of the second square rod 103 away from the stirrer 9. One end of the rotating shaft 104 extends to the outside of the fixed cylinder 101. A fixed disk 105 is rotatably arranged at the end of the stirrer 9 located inside the fixed cylinder 101. Two electromagnetic telescopic rods 106 are symmetrically and fixedly arranged between one side of the fixed disk 105 and the inner side wall of the fixed cylinder 101. The electromagnetic telescopic rod 106 includes a sleeve 13 fixedly arranged on the inner side wall of the fixed cylinder 101. A connecting rod 14 is inserted into the interior of the sleeve 13. An electromagnet block 15 is fixedly arranged inside the sleeve 13. A permanent magnet block 16 is fixedly arranged at the end of the connecting rod 14 located inside the sleeve 13. A spring 17 is fixedly arranged between the electromagnet block 15 and the permanent magnet block 16. When the electromagnet block 15 is powered on and current flows into the interior of the electromagnet block 15, a magnetic suction force on the permanent magnet block 16 is generated, so that the permanent magnet block 16 and the connecting rod 14 synchronously overcome the elastic force of the spring 17 and move towards the interior of the sleeve 13, thereby being able to pull the fixed disk 105 and one end of the stirrer 9 to move. When the electromagnet block 15 is powered off, at this time, the elastic force of the spring 17 causes the stirrer 9 to move to the left; limiting sliders 18 are fixedly arranged at the bottom and the bottom of the fixed disk 105. Two limiting slide rods 19 are symmetrically and fixedly arranged inside the fixed cylinder 101. The middle parts of the two limiting sliders 18 are respectively slidably connected to the rod walls of the two limiting slide rods 19. The limiting sliders 18 and the limiting slide rods 19 can limit the position of the fixed disk 105, so that the fixed disk 105 can only move horizontally and will not rotate.

[0024] The stirring intensity detection mechanism 11 is arranged on the outer side wall of the treatment tank 1. The stirring intensity detection mechanism 11 is connected to the mobile stirring mechanism 10. The stirring intensity detection mechanism 11 includes a box body 111 fixedly arranged on the outer side wall of the treatment tank 1. One side of the box body 111 is provided with a box cover 112. A torque meter 113 is installed on the inner side wall of the box body 111. One end of the rotating shaft 104 extends into the interior of the box body 111 and is fixedly provided with a coupling 114. The rotating end of the torque meter 113 is fixedly connected to one end of the rotating shaft 104 through the coupling 114. A pulse counter 115 is fixedly arranged at the bottom of the box body 111. One end of the stirrer 9 drives the rotating shaft 104 to rotate. At the same time, the rotating shaft 104 drives the rotating end of the torque meter 113 to rotate through the coupling 114. The torque meter 113 can detect the rotating intensity of the stirrer 9 in real time. The torque meter 113 mainly detects the rotating intensity of the stirrer 9 in real time based on the strain gauge principle. Strain gauges are pasted on the surface of the internal shaft body thereof. When the rotating shaft 104 drives the rotating end of the torque meter 113 to rotate, the torque value borne by the stirrer 9 at present can be accurately calculated, so as to reflect the rotating intensity of the stirrer 9 in real time. When the stirring power of the stirrer 9 is too high or too low, the torque meter 113 will immediately capture the abnormal change of the stirring intensity and generate a pulse signal. This pulse signal will be directly transmitted to the pulse counter 115. The pulse counter 115 has an accurate counting function.

[0025] The PLC controller 12 is fixedly arranged on the outer side wall of the treatment tank 1. The electromagnetic switch valve 4, the treatment agent metering mechanism 6, the multi-parameter water quality analyzer 7, the stirring motor 8, the mobile stirring mechanism 10 and the stirring intensity detection mechanism 11 are all electrically connected to the PLC controller 12.

[0026] Now, the operation principle of the present invention is described as follows: The staff conveys the sewage generated in daily life and industrial enterprises through a conveying pipeline, and then filters the generated sewage to remove the impurities with larger particles in the sewage. Then, the sewage is injected into the interior of the water inlet pipe 2 through the conveying pipeline, so that the sewage falls into the interior of the treatment tank 1 until the sewage reaches a certain liquid level height and then the injection stops; The staff manually operates the PLC controller 12 to start the mixing motor 8 to work. The mixing motor 8 can drive the mixer 9 to rotate, so that the mixer 9 rotates inside the treatment tank 1 and agitates the sewage. After 30 seconds of agitation, the mixing motor 8 stops working. Wait for a period of time to allow the water to settle fully (5 - 15 minutes) to stabilize the particles and bubbles in the water. Then, manually operate the PLC controller 12 to start the multi-parameter water quality analyzer 7 to work. The multi-parameter water quality analyzer 7 can detect the components of the sewage and obtain key index data such as the pH value, dissolved oxygen, and chemical oxygen demand of the sewage (if time permits, multiple consecutive measurements can be carried out within a period of time, and the average value can be taken as the measurement result to improve the data accuracy). The multi-parameter water quality analyzer 7 feeds back the detected data to the PLC controller 12. The PLC controller 12, relying on the built-in intelligent operation system, accurately calculates the dosage of polyacrylamide flocculant required based on the water quality detection data. Subsequently, the PLC controller 12 controls the metering pump 61 to start working according to the calculation result, so that the metering pump 61 quantitatively extracts the polyacrylamide flocculant inside the treatment agent storage tank 5 and discharges it into the inside of the treatment agent drain pipe 62, and then discharges it into the inside of the treatment tank 1 in a large area through the hollow drain plate 20 and the drain holes 21 on its lower surface. At the same time, the PLC controller 12 also starts the mixing motor 8 to work again. The mixing motor 8 drives the mixer 9 to fully mix the sewage and the polyacrylamide flocculant, so that the suspended particles and colloid substances in the sewage are flocculated into larger flocs and precipitate to the bottom of the treatment tank 1. At the same time, the upper layer of water becomes clear, thus realizing the preliminary purification of the sewage. The upper layer of clear water can be discharged through an external suction pipe, and the sediment at the bottom can be discharged through the water outlet pipe 3; When the addition amount of the polyacrylamide flocculant exceeds a certain amount (the detection value of the metering pump 61 reaches the threshold preset inside the PLC controller 12), it indicates that the sewage is severely polluted. The metering pump 6 will feedback an electrical signal to the PLC controller 12, and the PLC controller 12 will immediately start the energized electromagnet 15 to work for 5 seconds, so that the energized electromagnet 15 is powered on. When an electric current flows into the energized electromagnet 15, a magnetic suction force on the permanent magnet 16 is generated, causing the permanent magnet 16 and the connecting rod 14 to synchronously overcome the elastic force of the spring 17 and move into the inside of the sleeve 13, thereby being able to pull the fixed disk 105 and one end of the stirrer 9 to move (since the stirrer 9 is pulled through the first square rod 102 and the second square rod 103 to be respectively connected to the output end of the stirring motor 8 and the rotating shaft 104, it can ensure the power transmission effect between the output end of the stirring motor 8 and the stirrer 9 and between the stirrer 9 and the rotating shaft 104, ensuring the stable and efficient operation of the entire stirring system. At the same time, it can also enable the stirrer 9 to slide between the first square rod 102 and the second square rod 103), causing the stirrer 9 to move to the right inside the treatment tank 1. After 5 seconds, the energized electromagnet 15 is powered off, and the power-off duration is 8 seconds. At this time, the magnetic suction force of the energized electromagnet 15 disappears, and the permanent magnet 16 and the connecting rod 14 move to the outside of the sleeve 13 under the action of the elastic force of the spring 17, thereby being able to cause the fixed disk 105 to push the stirrer 9 to move to the left inside the treatment tank 1. By circulating the start-stop operation of the above-mentioned energized electromagnet 15, the stirrer 9 moves back and forth left and right inside the treatment tank 1, increasing the fluid disturbance and expanding the stirring range, thereby realizing more uniform and efficient stirring of the sewage and the polyacrylamide flocculant, ensuring the full progress of the flocculation reaction, and improving the sewage treatment effect; When the sewage or the mixture of sewage and flocculant is stirred, one end of the agitator 9 drives the rotating shaft 104 to rotate. At the same time, the rotating shaft 104 drives the rotating end of the torque meter 113 to rotate through the coupling 114. The torque meter 113 can detect the rotation strength of the agitator 9 in real time. The torque meter 113 mainly detects the rotation strength of the agitator 9 in real time based on the strain gauge principle. The internal shaft surface is affixed with a strain gauge. When the rotating shaft 104 drives the rotating end of the torque meter 113 to rotate, the shaft is deformed due to the torque, and the strain gauge is stretched or compressed, which causes the resistance value of the strain gauge to change. The resistance value change is converted into an electrical signal through the measuring circuit. The output is then processed by the signal processing unit inside the instrument, such as amplification, filtering, analog-to-digital conversion, etc. Finally, the torque value currently borne by the stirrer 9 is accurately calculated based on a specific algorithm and calibration parameters, so as to reflect the rotation intensity of the stirrer 9 in real time. The detected electrical signal is sent to the PLC controller 12. The PLC controller 12 automatically and intelligently adjusts the power of the stirring motor 8 according to the real-time rotation intensity data fed back by the torque meter 113, and accurately controls the stirring intensity of the stirrer 9. Taking industrial wastewater treatment as an example, a large number of experimental studies have shown that when the stirring power is in the range of 1 to 1.5 kW (the stirring power is positively correlated with the stirring intensity ), the flocculation effect is most ideal, and the stirring intensity in this range is regarded as an appropriate range. If the stirring power of the agitator 9 is currently detected to be lower than 1 to 1.5 kW, the PLC controller 12 will increase the output power of the stirring motor 8 accordingly based on the detected value, so that the stirring power of the agitator 9 is increased to the appropriate range, thereby enhancing the treatment efficiency of the sewage or the mixture of sewage and flocculant, and ensuring that the flocculation reaction is fully carried out. On the contrary, if the stirring power of the agitator 9 is detected to be higher than 1 to 1.5 kW, the PLC controller 12 will reduce the power of the stirring motor 8 according to the detection result, and adjust the stirring power of the agitator 9 back to the appropriate range, which can effectively avoid the stirring intensity. If the stirring power is too large, the floc structure that has been formed will be destroyed and broken into fine particles again, which will affect the subsequent solid-liquid separation process, reduce the flocculation effect, and thus have a negative impact on the quality of sewage treatment. At the same time, maintaining the stirring power within a reasonable range can also prevent abnormal changes in the distribution of sewage components, for example, avoid uneven concentration of soluble substances or changes in the state of suspended particles, thereby ensuring that the subsequent measurement accuracy of key indicators such as sewage pH, dissolved oxygen, and chemical oxygen demand is not disturbed, and thus can provide accurate and real-time intensity monitoring data for the stirring operation, helping operators to timely and comprehensively grasp the stirring state and improve the overall efficiency and quality of sewage treatment; During the sewage treatment process, when the stirring power of the stirrer 9 is higher or lower than the appropriate range of 1 to 1.5 kW, the torque meter 113 will immediately detect the abnormal change in the stirring intensity and generate a pulse signal, which will be directly transmitted to the pulse counter 115. The pulse counter 115 has an accurate counting function and can perform real-time counting on the input pulse signal to achieve quantitative statistics of the fluctuating change in the stirring intensity of the stirrer 9, thereby reflecting the frequency of the stirring intensity deviating from the appropriate range. After the counting is completed, the pulse counter 115 will quickly feedback an electrical signal to the PLC controller 12. After receiving this electrical signal, the PLC controller 12 will visually display the counting result of the pulse counter 115 on the connected display screen. A counting threshold is preset inside the PLC controller 12. Once the counting result reaches this threshold, it means that the abnormal frequency of the stirring motor 8 or the stirrer 9 is too high. At this time, the alarm built into the PLC controller 12 will be immediately activated to remind the staff. After receiving the alarm, the staff can promptly repair the stirring motor 8 or the stirrer 9 to ensure that the equipment returns to the normal operating state, thereby ensuring the efficient progress of the sewage treatment work and continuously maintaining a good sewage treatment effect.

[0027] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sewage treatment agent adding and mixing device for sewage treatment, comprising a treatment box (1), a water inlet pipe (2), a water outlet pipe (3), an electromagnetic switch valve (4) and a treatment agent storage tank (5), wherein the water inlet pipe (2) and the treatment agent storage tank (5) are both fixedly arranged on the top of the treatment box (1), the water outlet pipe (3) is fixedly arranged on the bottom of the side wall of the treatment box (1), and the electromagnetic switch valve (4) is arranged on the pipe wall of the water outlet pipe (3), characterized in that: Also includes: A treatment agent metering mechanism (6) is fixedly arranged on the top of the treatment box (1), and the treatment agent metering mechanism (6) is connected to the treatment agent storage tank (5); A multi-parameter water quality analyzer (7) is fixedly arranged at the bottom of the side wall of the processing box (1), and a detection end of the multi-parameter water quality analyzer (7) extends into the interior of the processing box (1); A stirring motor (8) is fixedly mounted on the outer wall of the processing box (1); a stirrer (9) is arranged inside the processing box (1), and one end of the stirrer (9) is connected to the output end of the stirring motor (8); A movable stirring mechanism (10) is arranged on the inner wall of the processing box (1), and the movable stirring mechanism (10) is connected to one end of the stirrer (9); A stirring intensity detection mechanism (11) is arranged on the outer wall of the processing box (1), and the stirring intensity detection mechanism (11) is connected to the movable stirring mechanism (10); A PLC controller (12) is fixedly mounted on the outer wall of the treatment box (1); the electromagnetic switch valve (4), the treatment agent metering mechanism (6), the multi-parameter water quality analyzer (7), the stirring motor (8), the mobile stirring mechanism (10) and the stirring intensity detection mechanism (11) are all electrically connected to the PLC controller (12).

2. A sewage treatment agent adding and mixing device for sewage treatment according to claim 1, characterized in that: The treatment agent metering mechanism (6) comprises a metering pump (61) fixedly arranged on the top of the treatment box (1), the output end of the metering pump (61) being connected to the bottom of the side wall of the treatment agent storage tank (5), and a treatment agent drain pipe (62) is fixedly arranged at the output end of the metering pump (61), and the treatment agent drain pipe (62) extends inward from the top of the treatment box (1).

3. A sewage treatment agent adding and mixing device for sewage treatment according to claim 1, characterized in that: The movable stirring mechanism (10) comprises a fixed cylinder (101) fixedly arranged on the inner wall of the processing box (1); a first square rod (102) and a second square rod (103) are movably inserted at both ends of the stirrer (9); one end of the first square rod (102) is fixedly connected to the output end of the stirring motor (8); one end of the stirrer (9) extends to the inside of the fixed cylinder (101) through a sealing component; one end of the second square rod (103) away from the stirrer (9) is fixedly provided with a rotating shaft (104); one end of the rotating shaft (104) extends to the outside of the fixed cylinder (101); one end of the stirrer (9) located inside the fixed cylinder (101) is rotatably provided with a fixed disk (105); two electromagnetic telescopic rods (106) are symmetrically fixedly provided between one side of the fixed disk (105) and the inner side wall of the fixed cylinder (101).

4. A sewage treatment agent adding and mixing device for sewage treatment according to claim 3, characterized in that: The electromagnetic telescopic rod (106) comprises a sleeve (13) fixedly arranged on the inner side wall of the fixed tube (101), a connecting rod (14) inserted into the interior of the sleeve (13), an electromagnetic block (15) fixedly arranged inside the sleeve (13), a permanent magnet block (16) fixedly arranged at one end of the connecting rod (14) located inside the sleeve (13), and a spring (17) fixedly arranged between the electromagnetic block (15) and the permanent magnet block (16).

5. A sewage treatment agent adding and mixing device for sewage treatment according to claim 3, characterized in that: The bottom and the bottom of the fixed plate (105) are both fixedly provided with limit sliders (18), and the interior of the fixed cylinder (101) is symmetrically fixedly provided with two limit sliders (19), and the middle parts of the two limit sliders (18) are respectively slidably connected to the rod walls of the two limit sliders (19).

6. A sewage treatment agent adding and mixing device for sewage treatment according to claim 3, characterized in that: The stirring intensity detection mechanism (11) comprises a box body (111) fixedly arranged on the outer wall of the processing box (1), a box cover (112) being arranged on one side of the box body (111), a torque meter (113) being installed on the inner wall of the box body (111), one end of the rotating shaft (104) extending into the interior of the box body (111) and being fixedly provided with a coupling (114), a rotating end of the torque meter (113) being fixedly connected to one end of the rotating shaft (104) via the coupling (114), and a pulse counter (115) being fixedly provided at the bottom of the box body (111).

7. A sewage treatment agent adding and mixing device for sewage treatment according to claim 2, characterized in that: A hollow drainage plate (20) is fixedly provided on the top inner wall of the treatment box (1), the lower end of the treatment agent drainage pipe (62) extends to the interior of the hollow drainage plate (20), a plurality of evenly distributed drainage holes (21) are provided on the lower surface of the hollow drainage plate (20), and a wiping plate (22) is fixedly provided on the stirring blade of the stirrer (9), and the wiping plate (22) can be arranged in contact with the lower surface of the hollow drainage plate (20).

8. A sewage treatment agent adding and mixing device for sewage treatment according to claim 1, characterized in that: The stirrer (9) adopts a multi-blade structure, with three blades forming a group. The surface of the stirring blade of the stirrer (9) is provided with a plurality of evenly distributed liquid mixing holes.

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