Variable-frequency control defoaming agent feeding device for wastewater treatment of slag factory
By designing a frequency-controlled defoamer dosing device with adjustment and separation mechanisms, the problems of sensor detection accuracy and solid-liquid separation were solved, achieving accurate dosing of defoamer and improving water treatment effect.
Patent Information
- Application Number
- CN202511681695.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-17
- Publication Date
- 2026-02-13
AI Technical Summary
In existing slag plant wastewater treatment equipment, the sensor detection accuracy is affected by accumulated matter, making it impossible to accurately determine the amount of foam. Furthermore, the lack of effective solid-liquid separation leads to inaccurate defoamer dosing and reduced water treatment efficiency.
A frequency-controlled defoamer dosing device including an adjustment mechanism and a separation mechanism was designed. The cam and guide ball clean the probe to ensure the accuracy of defoamer dosing, and the separation plate and moving rod realize solid-liquid separation to avoid solid impurities affecting the treatment effect.
It enables real-time cleaning of the probe and accurate dosing of defoamer, ensuring normal system operation, extending equipment life, and improving water treatment efficiency.
Smart Images
Figure CN121516951A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of wastewater treatment, more particularly to a frequency conversion control defoaming agent dosing device for slag plant wastewater treatment. BACKGROUND
[0002] The slag wastewater contains a large amount of toxic and harmful heavy metal ions, suspended solids, COD and other pollutants. If the wastewater is not treated and directly discharged, it will cause serious environmental pollution and ecological damage. Unordered discharge of wastewater will cause water pollution and soil pollution, endangering human health and the ecological environment. The slag wastewater contains a certain amount of organic matter such as oil, fatty acid and protein. These substances can reduce the surface tension of water, thereby forming foam. The existence of these foams can easily corrode the internal structure, so it is necessary to treat them with defoaming liquid. However, the existing dosing device still has some shortcomings, which are as follows: Firstly, if the probe is not cleaned for a long time, the dirt, oil, suspended solids and other precipitates in the wastewater will accumulate on the surface of the probe. These accumulated substances can affect the detection accuracy of the sensor, leading to distorted measurement data, and thus affecting the system's judgment of the amount of foam. The sensor cannot accurately detect the amount of foam, so the system cannot respond in time, resulting in inaccurate dosing of defoaming agent and possible neglect or over-treatment of the foam problem. Secondly, the slag wastewater often contains a large amount of solid particles such as coal ash and slag. If there is no solid-liquid separation device, these solid impurities in the wastewater cannot be effectively removed, which may affect the subsequent treatment stages such as sedimentation and filtration, resulting in reduced water treatment effect. Without effective solid-liquid separation, the suspended solids and solid substances in the wastewater cannot be fully removed, which may lead to unqualified discharge water quality and increase the risk of environmental pollution.
[0003] Therefore, there is an urgent need for a frequency conversion control defoaming agent dosing device for slag plant wastewater treatment. SUMMARY
[0004] In order to overcome the above-mentioned defects of the prior art, the present application provides a frequency conversion control defoaming agent dosing device for slag plant wastewater treatment to solve the problems existing in the background art.
[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a frequency conversion control defoaming agent dosing device for slag plant wastewater treatment, comprising a supporting mechanism, an adjusting mechanism, a stirring mechanism and a separation mechanism. The side surface of the supporting mechanism is fixedly connected with the side surface of the adjusting mechanism. The bottom end of the adjusting mechanism is connected with the top end of the stirring mechanism. The side surface of the stirring mechanism is fixedly connected with the inner side of the separation mechanism. The bottom end of the separation mechanism is fixedly connected with the top end of the supporting mechanism. The adjusting mechanism comprises a U-shaped support frame, a moving rod connected to the inner side of the U-shaped support frame, a rotating groove formed in the side of the U-shaped support frame, a rotating rod connected to the inner side of the rotating groove, a support plate fixedly connected to the side of the U-shaped support frame, a moving groove formed in the side of the U-shaped support frame, and a limiting rod connected to the inner side of the moving groove. The separating mechanism comprises a fixed plate, a sliding groove formed in the inner side of the fixed plate, a T-shaped sliding groove formed in the top end of the fixed plate, the inner side of the T-shaped sliding groove connected to the side of the rack, a sliding rod fixedly connected to the bottom end of the rack, and the side of the sliding rod connected to the inner side of the T-shaped sliding groove.
[0006] Further, the supporting mechanism comprises an L-shaped support frame, a bearing plate fixedly connected to the top end of the L-shaped support frame, the side of the bearing plate fixedly connected to the side of the U-shaped support frame, a placing groove formed in the top end of the L-shaped support frame, the inner side of the placing groove fixedly connected to the side of the stirring mechanism, and a supporting rod fixedly connected to the bottom end of the L-shaped support frame.
[0007] Further, the top end of the support plate is fixedly connected to a first motor, a recess is formed in the bottom end of the U-shaped support frame, the inner side of the recess is connected to the side of the stirring mechanism, a first T-shaped groove is formed in the inner side of the U-shaped support frame, a first elastic spring is fixedly connected to the inner side of the first T-shaped groove, and the side of the moving rod is connected to the inner side of the first T-shaped groove.
[0008] Further, the top end of the moving rod is fixedly connected to a baffle, the side of the moving rod is fixedly connected to a water delivery pipe, the side of the water delivery pipe is connected to the inner side of the U-shaped support frame, a water outlet is formed in the bottom end of the moving rod, the top end of the moving rod is connected to the bottom end of a guide ball, the side of the first motor is fixedly connected to a rotating rod, and the side of the rotating rod is fixedly connected to the inner side of a cam.
[0009] Further, the side of the guide ball is fixedly connected to a work-shaped pressurizing rod, the top end of the work-shaped pressurizing rod is connected to the bottom end of the limiting rod, a second T-shaped groove is formed in the top end of the limiting rod, the inner side of the second T-shaped groove is fixedly connected to the bottom end of the first elastic spring, a turning groove is formed in the side of the cam, and the inner side of the turning groove is connected to the side of the guide ball.
[0010] Further, the stirring mechanism comprises a stirring barrel and stirring blades, a liquid inlet groove is formed at the top end of the stirring barrel, the inner side of the liquid inlet groove is connected with the side of the moving rod, a second motor is fixedly connected to the top end of the stirring barrel, a rotating rod is fixedly connected to the bottom end of the second motor, the side of the rotating rod is fixedly connected with the side of the stirring blades, a pressure sensor is fixedly connected to the side of the stirring blades, a magnetic gap is arranged on the side of the stirring barrel, a feeding port is fixedly connected to the side of the stirring barrel, and a protective plate is connected to the bottom end of the stirring barrel.
[0011] Further, the inner side of the T-shaped sliding groove is connected with a connecting rod, the side of the connecting rod is fixedly connected with a separation plate, the side of the separation plate is connected with the side of the stirring barrel, the top end of the fixed plate is connected with the bottom end of the rack, the side of the rack is fixedly connected with a limiting plate, the side of the limiting plate is fixedly connected with a moving tooth, the side of the moving tooth is fixedly connected with the side of the connecting rod, the inner side of the limiting plate is connected with a guide rod, the side of the guide rod is connected with a second elastic spring, and the top end of the second elastic spring is fixedly connected with the side of the limiting plate.
[0012] Further, the top end of the fixed plate is fixedly connected with a positioning plate, the side of the positioning plate is fixedly connected with a third motor, the side of the third motor is fixedly connected with a driving gear, the side of the driving gear is engaged with the side of the rack, and the side of the driving gear is connected with the side of the moving tooth.
[0013] Technical effects and advantages of the present application: The present application has the advantages that: the adjusting mechanism is provided, the probe is flushed after frequency dosing through the cam and the guide ball, the probe can monitor the running state of the defoamer dosing device in real time, and the internal dirt accumulation or blockage of the equipment can be detected; the probe can remove the internal dirt of the dosing device, ensure the smoothness of the defoamer dosing pipeline, avoid inaccurate or uneven dosing caused by blockage or impurities, and thus maintain the normal working effect of the defoamer.
[0014] The present application has the advantages that: the adjusting mechanism is provided, the probe is flushed after frequency dosing through the cam and the guide ball, the probe can monitor the running state of the defoamer dosing device in real time, and the internal dirt accumulation or blockage of the equipment can be detected; the probe can remove the internal dirt of the dosing device, ensure the smoothness of the defoamer dosing pipeline, avoid inaccurate or uneven dosing caused by blockage or impurities, and thus maintain the normal working effect of the defoamer. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the support mechanism structure of the present application; Figure 3 Structure diagram of adjusting mechanism of the present application; Figure 4 Structure diagram of frame of adjusting mechanism of the present application; Figure 5 Structure diagram of driving mechanism of adjusting mechanism of the present application; Figure 6 Structure diagram of stirring mechanism of the present application; Figure 7 Structure diagram of separating mechanism of the present application; Figure 8 Structure diagram of driving mechanism of separating mechanism of the present application.
[0016] Reference signs are: 1, supporting mechanism; 101, L-shaped supporting frame; 102, load-bearing plate; 103, installation groove; 104, supporting rod; 2, adjusting mechanism; 21, U-shaped supporting frame; 211, rotating groove; 212, supporting plate; 213, moving groove; 214, first T-shaped groove; 215, recess; 22, moving rod; 221, water delivery pipe; 222, baffle; 223, water outlet; 23, cam; 231, turning groove; 232, rotating rod; 233, first motor; 234, guide ball; 235, first elastic spring; 236, limiting rod; 237, second T-shaped groove; 238, I-shaped pressurizing rod; 3, stirring mechanism; 301, stirring barrel; 302, feeding port; 303, protection plate; 304, rotating rod; 305, stirring blade; 306, pressure sensor; 307, second motor; 308, liquid inlet groove; 4, separating mechanism; 41, fixed plate; 411, separating plate; 412, sliding groove; 413, connecting rod; 414, T-shaped sliding groove; 42, rack; 421, sliding rod; 422, positioning plate; 423, third motor; 424, driving gear; 425, limiting plate; 426, second elastic spring; 427, guide rod; 428, moving tooth. DETAILED DESCRIPTION
[0017] The technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application, and additionally, the forms of each structure described in the following embodiments are only examples, and the frequency conversion control defoaming agent dosing device for slag plant wastewater treatment involved in the present application is not limited to each structure described in the following embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.
[0018] ReferenceFigures 1 to 5 The present invention provides a frequency conversion controlled defoamer dosing device for wastewater treatment in slag plants, including a support mechanism 1, an adjustment mechanism 2, a stirring mechanism 3 and a separation mechanism 4. The side of the support mechanism 1 is fixedly connected to the side of the adjustment mechanism 2, the bottom end of the adjustment mechanism 2 is connected to the top end of the stirring mechanism 3, the side of the stirring mechanism 3 is fixedly connected to the inner side of the separation mechanism 4, and the bottom end of the separation mechanism 4 is fixedly connected to the top end of the support mechanism 1. The adjustment mechanism 2 includes a U-shaped support frame 21 and a cam 23. A moving rod 22 is connected to the inner side of the U-shaped support frame 21. A rotating groove 211 is opened on the side of the U-shaped support frame 21. A rotating rod 232 is connected to the inner side of the rotating groove 211. A support plate 212 is fixedly connected to the side of the U-shaped support frame 21. A moving groove 213 is opened on the side of the U-shaped support frame 21. A limit rod 236 is connected to the inner side of the moving groove 213. The separation mechanism 4 includes a fixed plate 41 and a rack 42. A sliding groove 412 is provided on the inner side of the fixed plate 41, and a T-shaped sliding groove 414 is provided on the top of the fixed plate 41. The inner side of the T-shaped sliding groove 414 is connected to the side of the rack 42. A sliding rod 421 is fixedly connected to the bottom end of the rack 42, and the side of the sliding rod 421 is connected to the inner side of the T-shaped sliding groove 414.
[0019] The support mechanism 1 includes an L-shaped support frame 101, a load-bearing plate 102 fixedly connected to the top of the L-shaped support frame 101, a side of the load-bearing plate 102 fixedly connected to the side of the U-shaped support frame 21, a placement groove 103 opened at the top of the L-shaped support frame 101, the inner side of the placement groove 103 fixedly connected to the side of the stirring mechanism 3, and a support rod 104 fixedly connected to the bottom of the L-shaped support frame 101.
[0020] The support plate 212 is fixedly connected to the top of the first motor 233, the bottom of the U-shaped support frame 21 is provided with a groove 215, the inner side of the groove 215 is connected to the side of the stirring mechanism 3, the inner side of the U-shaped support frame 21 is provided with a first T-shaped groove 214, the inner side of the first T-shaped groove 214 is fixedly connected with a first elastic spring 235, and the inner side of the first T-shaped groove 214 is connected to the side of the moving rod 22.
[0021] Among them, a baffle 222 is fixedly connected to the top of the moving rod 22, a water supply pipe 221 is fixedly connected to the side of the moving rod 22, the side of the water supply pipe 221 is connected to the inner side of the U-shaped support frame 21, a water outlet 223 is opened at the bottom of the moving rod 22, the top of the moving rod 22 is connected to the bottom of the guide ball 234, a rotating rod 232 is fixedly connected to the side of the first motor 233, and the side of the rotating rod 232 is fixedly connected to the inner side of the cam 23.
[0022] Among them, an I-shaped pressure rod 238 is fixedly connected to the side of the guide ball 234. The top end of the I-shaped pressure rod 238 is connected to the bottom end of the limiting rod 236. The top end of the limiting rod 236 is provided with a second T-shaped groove 237. The inner side of the second T-shaped groove 237 is fixedly connected to the bottom end of the first elastic spring 235. A steering groove 231 is provided on the side of the cam 23. The inner side of the steering groove 231 is connected to the side of the guide ball 234.
[0023] As the cam 23 rotates clockwise, the moving rod 22 is pressed down in sequence. When the moving rod 22 storing defoamer is pressed down, defoamer is added to the inside of the mixing tank 301. If the solvent is sprayed on the detection probe, it will cause errors in subsequent detection. Therefore, after adding the defoamer, the moving rod 22 storing clean water is pressed down to wash away the impurities attached to the probe in time. The first elastic spring 235 makes the top of the guide ball 234 always stick to the inside of the steering groove 231 and slide inside it. The first elastic spring 235 on the side of the moving rod 22 controls the liquid output at the outlet 223. When there is no external force, the outlet 223 at the bottom of the moving rod 22 is connected to the top of the mixing tank 301, effectively preventing the liquid inside from leaking.
[0024] Reference Figure 6 The stirring mechanism 3 includes a stirring tank 301 and stirring blades 305. The top of the stirring tank 301 is provided with a liquid inlet 308. The inner side of the liquid inlet 308 is connected to the side of the moving rod 22. A second motor 307 is fixedly connected to the top of the stirring tank 301. A rotating rod 304 is fixedly connected to the bottom of the second motor 307. The side of the rotating rod 304 is fixedly connected to the side of the stirring blades 305. A pressure sensor 306 is fixedly connected to the side of the stirring blades 305. The side of the stirring tank 301 has a magnetic gap. A feed inlet 302 is fixedly connected to the side of the stirring tank 301. A protective plate 303 is connected to the bottom of the stirring tank 301.
[0025] The pressure sensor 306 fixed on the side of the stirring blade 305 can sense the amount of sediment inside the stirring tank 301 during its movement, thereby better controlling the start and stop of the second motor 307. After the excess solids are discharged, the subsequent liquid is stirred more thoroughly, and the space for foaming inside the device is increased. There is a one-way flipping magnetic plate at the connection between the lower and upper sides of the stirring tank 301. When the separation plate 411 is pushed in from the outside, the magnetic plate opens inward. When the separation plate 411 is moved out of the inner side of the stirring tank 301, the magnetic plate closes again, providing a sealed space for the stirring tank 301.
[0026] Reference Figure 7 and Figure 8A connecting rod 413 is connected to the inner side of the T-shaped chute 414. A separation plate 411 is fixedly connected to the side of the connecting rod 413. The side of the separation plate 411 is connected to the side of the mixing tank 301. The top end of the fixing plate 41 is connected to the bottom end of the rack 42. A limiting plate 425 is fixedly connected to the side of the rack 42. A moving tooth 428 is fixedly connected to the side of the limiting plate 425. The side of the moving tooth 428 is fixedly connected to the side of the connecting rod 413. A guide rod 427 is connected to the inner side of the limiting plate 425. A second elastic spring 426 is connected to the side of the guide rod 427. The top end of the second elastic spring 426 is fixedly connected to the side of the limiting plate 425.
[0027] The top of the fixed plate 41 is fixedly connected to the positioning plate 422, the side of the positioning plate 422 is fixedly connected to the third motor 423, the side of the third motor 423 is fixedly connected to the drive gear 424, the side of the drive gear 424 meshes with the side of the rack 42, and the side of the drive gear 424 is connected to the side of the moving gear 428.
[0028] The distance that the connecting rod 413 moves is equal to the length of the rack 42, so that the moving teeth 428 on both sides of the rack 42 play a limiting role during operation. It is not necessary to carefully measure how much movement is needed to make the separating plate 411 completely retract into the inner side of the sliding groove 412.
[0029] Working principle of the invention: When the second motor 307 starts and drives the rotating rod 304 to rotate, the wastewater and catalyst inside the mixing tank 301 are fully mixed. Under the stirring action of the stirring blades 305, foam will form on the surface of the wastewater inside. The accumulation of foam will corrode the mechanical parts inside the mixing tank 301. Therefore, to suppress the foam during the stirring process, the distance between the foam and the top of the mixing tank 301 is transmitted to the display screen in real time by a detection instrument at the top of the mixing tank 301. Then, the first motor 233 is started to drive the guide ball 234 to move inside the turning groove 231. When the guide ball 234 moves from the staggered position to the parallel position in the turning groove 231, it drives the limiting rod 236 connected to the I-shaped pressure rod 238 to move. When the I-shaped pressure rod 238 is driven to the top of the moving rod 22, and the guide ball 234 moves to its top inside the turning groove 231, the shape of the cam 23 causes it to press down on the I-shaped pressure rod 238, thereby pressing down on the moving rod 22. As a result, the outlet 223 at the bottom of the moving rod 22 is exposed inside the mixing tank 301, and the liquid is released into the inside of the mixing tank 301 through the water supply pipe 221 to eliminate the foam in the wastewater that is foaming in the stirring state. The height of the foam from the top of the mixing tank 301 is calculated and an appropriate amount of agent is added. The amount of agent added is controlled by the length of time the protruding end of the cam 23 stays on the side of the guide ball 234. After the foam is eliminated, the surface of the detector needs to be cleaned. This can be achieved by moving the guide ball 234 to another parallel groove in the steering groove 231, causing the limit rod 236 to move the I-shaped pressure rod 238 to the other side, compressing the moving rod 22 on the other side, thereby opening the moving rod 22 at the other end and spraying clean water onto the surface of the detector, which can effectively extend its service life. When the first motor 233 starts and drives the steering groove 231 to rotate from the parallel groove to the intersection, the elastic action of the first elastic spring 235 pushes the I-shaped pressure rod 238 back to the inside of the steering groove 231, so that the guide ball 234 is always in contact with the inside of the steering groove 231.
[0030] During wastewater treatment, sedimentation occurs. When the pressure sensor 306 on the side of the stirring blade 305 reaches the set maximum value, the second motor 307 stops operating. Once the solids inside the stirring tank 301 have settled to the bottom, the third motor 423 is activated to drive the rack 42 to slide. The connecting rod 413, fixedly connected to the side of the moving gear 428, connects to the separation plate 411, thereby driving the separation plate 411 into the inner side of the stirring tank 301, dividing the inner side of the stirring tank 301 into upper and lower sections. The sediment at the bottom can be discharged by opening the protective plate 303, allowing for better solid-liquid separation. When the separation plate 411 needs to enter the inner side of the stirring tank 301, the third motor 423 is activated to drive... The driving gear 424 on its side drives the connecting rod 413 fixed on the side of the moving gear 428 through the meshing between the driving gear 424 and the rack 42. A separation plate 411 is fixedly connected to the other end of the connecting rod 413, so that it slides inside the sliding groove 412 and seals the bottom of the mixing tank 301. When the driving gear 424 drives the rack 42 to move to the side of the moving gear 428, the separation plate 411 just seals the side of the mixing tank 301. When the connecting rod 413 drives the separation plate 411 to move out of the inner side of the mixing tank 301 and into the inner side of the sliding groove 412, the driving gear 424 drives the rack 42 to move to the side of the moving gear 428 at the other end, so that the separation plate 411 is stored inside the fixed plate 41.
[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A frequency conversion controlled defoamer dosing device for wastewater treatment in a slag plant, comprising a support mechanism (1), characterized in that: It also includes an adjustment mechanism (2), a stirring mechanism (3) and a separation mechanism (4). The side of the support mechanism (1) is fixedly connected to the side of the adjustment mechanism (2), the bottom end of the adjustment mechanism (2) is connected to the top end of the stirring mechanism (3), the side of the stirring mechanism (3) is fixedly connected to the inner side of the separation mechanism (4), and the bottom end of the separation mechanism (4) is fixedly connected to the top end of the support mechanism (1). The adjustment mechanism (2) includes a U-shaped support frame (21) and a cam (23). A moving rod (22) is connected to the inner side of the U-shaped support frame (21). A rotating groove (211) is opened on the side of the U-shaped support frame (21). A rotating rod (232) is connected to the inner side of the rotating groove (211). A support plate (212) is fixedly connected to the side of the U-shaped support frame (21). A moving groove (213) is opened on the side of the U-shaped support frame (21). A limit rod (236) is connected to the inner side of the moving groove (213). The separation mechanism (4) includes a fixed plate (41) and a rack (42). A sliding groove (412) is provided on the inner side of the fixed plate (41), and a T-shaped sliding groove (414) is provided on the top of the fixed plate (41). The inner side of the T-shaped sliding groove (414) is connected to the side of the rack (42). A sliding rod (421) is fixedly connected to the bottom end of the rack (42), and the side of the sliding rod (421) is connected to the inner side of the T-shaped sliding groove (414).
2. The frequency conversion controlled defoamer dosing device for wastewater treatment in a slag plant according to claim 1, characterized in that: The support mechanism (1) includes an L-shaped support frame (101), a load-bearing plate (102) is fixedly connected to the top of the L-shaped support frame (101), the side of the load-bearing plate (102) is fixedly connected to the side of the U-shaped support frame (21), a placement groove (103) is opened at the top of the L-shaped support frame (101), the inner side of the placement groove (103) is fixedly connected to the side of the stirring mechanism (3), and a support rod (104) is fixedly connected to the bottom of the L-shaped support frame (101).
3. The frequency conversion controlled defoamer dosing device for wastewater treatment in a slag plant according to claim 1, characterized in that: The top of the support plate (212) is fixedly connected to the first motor (233), the bottom of the U-shaped support frame (21) is provided with a groove (215), the inner side of the groove (215) is connected to the side of the stirring mechanism (3), the inner side of the U-shaped support frame (21) is provided with a first T-shaped groove (214), the inner side of the first T-shaped groove (214) is fixedly connected to a first elastic spring (235), and the inner side of the first T-shaped groove (214) is connected to the side of the moving rod (22).
4. The frequency conversion controlled defoamer dosing device for wastewater treatment in a slag plant according to claim 3, characterized in that: A baffle (222) is fixedly connected to the top of the moving rod (22), a water pipe (221) is fixedly connected to the side of the moving rod (22), the side of the water pipe (221) is connected to the inner side of the U-shaped support frame (21), a water outlet (223) is opened at the bottom of the moving rod (22), the top of the moving rod (22) is connected to the bottom of the guide ball (234), a rotating rod (232) is fixedly connected to the side of the first motor (233), and the side of the rotating rod (232) is fixedly connected to the inner side of the cam (23).
5. The frequency conversion controlled defoamer dosing device for wastewater treatment in a slag plant according to claim 4, characterized in that: The guide ball (234) is fixedly connected to the side of an I-shaped pressure rod (238). The top end of the I-shaped pressure rod (238) is connected to the bottom end of a limiting rod (236). The top end of the limiting rod (236) is provided with a second T-shaped groove (237). The inner side of the second T-shaped groove (237) is fixedly connected to the bottom end of a first elastic spring (235). The side of the cam (23) is provided with a steering groove (231). The inner side of the steering groove (231) is connected to the side of the guide ball (234).
6. The frequency conversion controlled defoamer dosing device for wastewater treatment in a slag plant according to claim 1, characterized in that: The stirring mechanism (3) includes a stirring tank (301) and stirring blades (305). The top of the stirring tank (301) is provided with a liquid inlet groove (308). The inner side of the liquid inlet groove (308) is connected to the side of the moving rod (22). The top of the stirring tank (301) is fixedly connected with a second motor (307). The bottom of the second motor (307) is fixedly connected with a rotating rod (304). The side of the rotating rod (304) is fixedly connected to the side of the stirring blades (305). The side of the stirring blades (305) is fixedly connected with a pressure sensor (306). The side of the stirring tank (301) has a magnetic gap. The side of the stirring tank (301) is fixedly connected with a feed inlet (302). The bottom of the stirring tank (301) is connected with a protective plate (303).
7. The frequency conversion controlled defoamer dosing device for wastewater treatment in a slag plant according to claim 1, characterized in that: The inner side of the T-shaped chute (414) is connected to a connecting rod (413), and the side of the connecting rod (413) is fixedly connected to a separation plate (411). The side of the separation plate (411) is connected to the side of the mixing tank (301). The top end of the fixing plate (41) is connected to the bottom end of the rack (42). The side of the rack (42) is fixedly connected to a limiting plate (425). The side of the limiting plate (425) is fixedly connected to a moving tooth (428). The side of the moving tooth (428) is fixedly connected to the side of the connecting rod (413). The inner side of the limiting plate (425) is connected to a guide rod (427). The side of the guide rod (427) is connected to a second elastic spring (426). The top end of the second elastic spring (426) is fixedly connected to the side of the limiting plate (425).
8. The frequency conversion controlled defoamer dosing device for wastewater treatment in a slag plant according to claim 7, characterized in that: A positioning plate (422) is fixedly connected to the top of the fixed plate (41), a third motor (423) is fixedly connected to the side of the positioning plate (422), a drive gear (424) is fixedly connected to the side of the third motor (423), the side of the drive gear (424) meshes with the side of the rack (42), and the side of the drive gear (424) is connected to the side of the moving gear (428).