Chemical feeding structure and numerical control square sewage treatment equipment

By designing a drug administration structure for sewage treatment, the combination of the fixing frame and floating plate can achieve drug delivery close to the water surface, solving the problem of diffuse and adhesion of the drug powder, improving the drug utilization rate and reducing the risk of agglomeration.

CN119660851AInactive Publication Date: 2025-03-21JIANGXI XINHANG ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202510013473.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-06
Publication Date
2025-03-21
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

During sewage treatment, the powder is prone to spread in the air or adheres to the wall of the sewage pool, resulting in low utilization, affecting the efficiency of imaging monitoring, and it is difficult for the drug to fall into the water.

Method used

A drug delivery structure is designed, including components such as silo, fixing frame, floating plate, discharge port and baffle. By putting the fixing frame and the floating plate into water, the floating plate will be suspended and the fixing frame will be lowered until the discharge port is opened when the trigger member contacts the rod, so that the drug can be placed close to the water surface and avoid diffusion and attachment.

Benefits of technology

Effectively avoids the spread and attachment of drugs, improves the utilization rate of drugs, ensures that the drugs can fall into the water, and reduces water vapor erosion and agglomeration problems.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a chemical dosing structure in the technical field of sewage treatment, which comprises a stock bin, and further comprises two fixing frames which are symmetrically arranged relative to the stock bin and are fixedly connected with the stock bin; the floating plate is located below the two fixing frames and is in sliding connection with the two fixing frames through two contact rods fixedly arranged at the top end of the floating plate; the discharging opening is formed under the stock bin; the two separation blades are symmetrically distributed and rotationally connected to the bottom end of the stock bin; according to the chemical dosing device, during chemical dosing, the fixing frame and the floating plate are directly put into the water surface, after the floating plate suspends, the fixing frame descends relative to the contact rod, the discharging opening can be opened for chemical dosing until the triggering piece descends to make contact with the contact rod, the distance between the discharging opening and the liquid level is a certain height, and then chemical dosing is in the state of being close to the water surface; the problem that the sight line is limited and attached during camera shooting collection due to the fact that the medicine diffuses and drifts in the air is avoided.
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Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a dosing structure and numerically controlled square sewage treatment equipment. Background Art

[0002] ‌Sewage treatment equipment‌ refers to equipment specifically used to treat sewage, which removes pollutants in sewage through physical, chemical or biological methods to make the water quality meet the discharge standards or reuse water quality requirements; When treating sewage, it is often necessary to add drugs to the sewage to improve the efficiency of sewage purification and treatment process. When adding drugs, because the drug powder is usually in powder state, when the drug powder is directly sprinkled into the sewage, the powder will diffuse in the air, or adhere to the wet pool wall of the sewage pool and is difficult to fall, which leads to the utilization rate of the powder. A camera component for monitoring the sewage purification status after drug addition is usually installed above the sewage pool. After the powder diffuses, it will affect the monitoring efficiency of the camera acquisition and is easy to adhere to the camera component. Summary of the invention

[0003] The purpose of the present invention is to provide a dosing structure and a numerically controlled square sewage treatment device to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dosing structure, including a silo, and also including: two fixed frames, which are symmetrically arranged about the silo and fixedly connected to the silo; a floating plate, which is located below the two fixed frames and is slidably connected to the two fixed frames through two contact rods fixed at the top thereof; a discharge port, which is opened directly below the silo; two baffles, which are symmetrically distributed and rotatably connected to the bottom of the silo, and the two baffles are used to close the discharge port; two trigger members, which are respectively rotatably connected to the two fixed frames and whose rotating shafts are respectively sleeved with first torsion springs; two driving rods, which are respectively rotatably connected to the two trigger members at the top and rotatably connected to the two baffles at the bottom.

[0005] As a further solution of the present invention, a slide groove is provided on the inner wall of the discharge port, and a leakage plate is slidably connected inside the slide groove, and the end of the leakage plate extends to the outside of the discharge port, and a plurality of leakage holes are provided on the leakage plate. The two baffles are located directly below the leakage plate, and a turntable is fixedly connected to the rotating shaft of one of the two baffles, and a plurality of top plates are rotatably connected to the turntable. A second torsion spring is sleeved on the rotating shaft of the top plates. When the driving rod pushes the baffle to rotate and releases the closure of the discharge port, the baffle drives the turntable to rotate. When the turntable rotates, the top plate will contact the ends of the leakage plate in turn and lift up the leakage plate. When the top plate passes over the leakage plate, the leakage plate falls rapidly and generates vibration.

[0006] As a further solution of the present invention, a base plate is arranged directly below the baffle, the base plate is fixedly connected to the fixing frame, a first motor is fixedly connected to the bottom end of the base plate, a rotating shaft of the first motor passes through the base plate and extends to above the base plate, and a plurality of blades are fixedly connected to the rotating shaft of the first motor.

[0007] As a further solution of the present invention, a ring is slidably connected to the base plate, and two second motors are fixedly connected to the base plate. The rotating shafts of the two second motors are fixedly connected to connecting parts, and the ends of the ring located on the connecting parts are provided with contact parts, and the ends of the contact parts are located on one side of the rotation center of the connecting part.

[0008] As a further solution of the present invention, two auxiliary brackets are fixedly connected to the collar, the driving rod is composed of a first support rod, a second support rod and a spring, the first support rod is slidably connected to the second support rod, the spring is fixedly connected between the first support rod and the second support rod, and the top end of the first support rod and the bottom end of the second support rod are rotatably connected to the trigger member and the baffle respectively; When the two baffles release the seal on the discharge port, they will be in an inclined state, and the intermittent lifting of the auxiliary bracket driven by the collar can cause the two baffles to swing.

[0009] As a further solution of the present invention, a plurality of water absorption sleeves are fixedly connected to the bottom end of the bottom plate, and an impeller is disposed inside each of the water absorption sleeves.

[0010] As a further solution of the present invention, a return spring is fixedly connected between the top of the leakage plate and the inner wall of the slide groove.

[0011] The numerically controlled square sewage treatment equipment comprises a sewage treatment equipment body, wherein two winding motors are fixedly connected to the inner wall of the sewage treatment equipment body, the rotating shafts of the winding motors are fixedly connected to pull ropes, and the two pull ropes are fixedly connected to the two fixing frames respectively.

[0012] Compared with the prior art, the present invention has the following beneficial effects: According to the present invention, when administering medicine, the fixing frame and the floating plate are directly thrown into the water surface. After the floating plate is suspended, the fixing frame descends relative to the contact rod, and the discharge port is not opened until the trigger member descends to contact the contact rod to administer the medicine. At this time, the discharge port is at a certain height away from the liquid surface, so that the medicine is kept close to the water surface to prevent the medicine from diffusing and floating in the air, thereby limiting the line of sight and adhering to the camera during video collection, and also preventing the medicine from scattering to the inner wall of the pool and failing to fall into the water, thereby ensuring the utilization effect of the medicine.

[0013] Furthermore, before dosing, the discharge port can be opened only after the fixed frame is lowered to the limit relative to the floating plate, which can effectively shorten the time the discharge port is open, thereby reducing the erosion of water vapor. After the dosing is completed, the fixed frame is lifted up and rises relative to the floating plate. At this time, the trigger member and the contact rod are disengaged and reset, so that the discharge port can be closed as soon as the dosing is completed. This can prevent the evaporation of water in the sewage or the high-humidity gas from entering the silo to form lumps, which makes it difficult to discharge the material later. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the connection relationship between the fixing frame and the trigger member of the present invention; Figure 3 It is a schematic diagram of the triggering member of the present invention before and after being pushed and rotated by the contact rod; Figure 4 It is a schematic diagram of the positional relationship between the chute, the leakage plate and the turntable of the present invention; Figure 5 for Figure 4 A partial enlarged view of the middle A; Figure 6 Schematic diagram of the positional relationship between the baffle and the discharge port of the present invention; Figure 7 It is a schematic diagram of the positions of the blades, the bottom plate and the liquid surface when the floating plate of the present invention is suspended above the water surface; Figure 8 It is a schematic diagram of the connection relationship between the bottom plate and the water absorption sleeve and the second motor and the bottom plate of the present invention; Fig. 9 It is a schematic diagram of the positional relationship between the bottom plate, the collar and the auxiliary bracket of the present invention; Fig.10 It is a schematic diagram of the auxiliary bracket of the present invention in contact with the baffle; Fig.11 It is an overall schematic diagram of the numerically controlled square sewage treatment equipment of the present invention; Fig.12 It is a schematic diagram of the positional relationship between the numerically controlled square sewage treatment equipment and the dosing structure of the present invention.

[0015] Notes on the figure numbers: 1. silo; 2. fixed frame; 3. floating plate; 4. discharge port; 5. baffle; 6. trigger member; 7. first torsion spring; 8. driving rod; 9. slide groove; 10. leakage plate; 11. turntable; 12. top plate; 13. second torsion spring; 14. first motor; 15. blade; 16. collar; 17. second motor; 18. connecting member; 19. contact part; 20. auxiliary bracket; 21. first support rod; 22. second support rod; 23. spring; 24. water absorption sleeve; 25. reset spring; 26. sewage treatment equipment body; 27. winding motor; 28. pull rope; 29. ​​contact rod; 30. bottom plate. DETAILED DESCRIPTION

[0016] See also Figure 1-Figure 12 The present invention provides a technical solution: a dosing structure, including a silo 1, and also including: two fixed frames 2, which are symmetrically arranged about the silo 1 and fixedly connected to the silo 1; a floating plate 3, which is located below the two fixed frames 2 and is slidably connected to the two fixed frames 2 through two contact rods 29 fixed on the top thereof; a discharge port 4, which is opened just below the silo 1; two baffles 5, which are symmetrically distributed and rotatably connected to the bottom of the silo 1, and the two baffles 5 are used to close the discharge port 4; two trigger members 6, which are respectively rotatably connected to the two fixed frames 2, and the first torsion springs 7 are sleeved on their rotating shafts; two driving rods 8, which are respectively rotatably connected to the two trigger members 6 at the top and rotatably connected to the two baffles 5 at the bottom.

[0017] like Figure 1-4 , Figure 6-7 As shown: Before use, the powder medicine to be put in the feed bin 1, at this time, the two baffles 5 close the discharge port 4 to prevent the medicine from leaking out, and then the fixed frame 2 and the floating plate 3 are directly put into the water. When the floating plate 3 contacts the water surface, the fixed frame 2 will slide down relative to the contact rod 29 under its own weight, and the contact rod 29 will slide up relative to the fixed frame 2. At this time, the contact rod 29 will gradually move from the bottom to the trigger member 6, as shown in FIG. Figure 3 As shown in a and b, a is a schematic diagram when the contact rod 29 has not risen to the limit height, and b is a schematic diagram after the contact rod 29 rises to the limit height and pushes the trigger member 6 to rotate; That is, after the floating plate 3 is suspended on the water surface, the fixing frame 2 descends relative to the contact rod 29. Only after descending to the limit can the contact rod 29 push the trigger member 6 from below to rotate 90 degrees, thereby causing the trigger member 6 to rotate around the rotation axis and compress the first torsion spring 7. During the rotation of the trigger member 6, the driving rod 8 pushes the baffle 5 to rotate around the rotation axis from a horizontal state to a position close to 90 degrees. At this time, the discharge port 4 is opened, and the medicine inside the silo 1 will fall into the sewage to complete the dosing. After the dosing is completed, the fixing frame 2 is directly lifted out. When the fixing frame 2 is lifted up, the floating plate 3 is still suspended in the water. At this time, the fixing frame 2 rises relative to the floating plate 3, and the trigger member 6 directly rises along the contact rod 29. When the trigger member 6 rises to a level higher than the contact rod 29, the first torsion spring 7 directly drives the trigger member 6 to rotate to the initial position. At this time, the two baffles 5 are pulled by the driving rod 8 to close the discharge port 4 again. When the fixing frame 2 slides up relative to the floating plate 3 to the limit, the floating plate 3 is lifted out of the water together. In the present invention, when administering medicine, the fixing frame 2 and the floating plate 3 are directly put into the water surface. After the floating plate 3 is suspended, the fixing frame 2 descends relative to the contact rod 29, and the discharge port 4 is opened to administer medicine until the trigger member 6 descends to contact the contact rod 29. At this time, the discharge port 4 is at a certain height from the liquid surface, so that the medicine is close to the water surface, so as to prevent the medicine from diffusing and floating in the air, causing the line of sight to be limited and attached during camera collection, and also to prevent the medicine from scattering to the inner wall of the pool and failing to fall into the water. Furthermore, before dosing, the discharge port 4 can be opened only after the fixed frame 2 is lowered to the limit relative to the floating plate 3. After the dosing is completed, the fixed frame 2 is lifted and rises relative to the floating plate 3. At this time, the trigger member 6 and the contact rod 29 are disengaged and reset, so that the discharge port 4 can be closed as soon as possible after the dosing is completed. This can prevent the evaporation of water in the sewage or the high-humidity gas from entering the interior of the silo 1 to form lumps, which makes it difficult to discharge the materials later.

[0018] A slide groove 9 is provided on the inner wall of the discharge port 4, and a leakage plate 10 is slidably connected inside the slide groove 9. The end of the leakage plate 10 extends to the outside of the discharge port 4. A plurality of leakage holes are provided on the leakage plate 10. Two baffles 5 are located directly below the leakage plate 10. A turntable 11 is fixedly connected to the rotating shaft of one of the two baffles 5. A plurality of top plates 12 are rotatably connected to the turntable 11. A second torsion spring 13 is sleeved on the rotating shaft of the top plates 12. When the driving rod 8 pushes the baffle 5 to rotate and releases the closure of the discharge port 4, the baffle 5 drives the turntable 11 to rotate. When the turntable 11 rotates, the top plate 12 will contact the end of the leakage plate 10 in turn and lift the leakage plate 10. When the top plate 12 passes over the leakage plate 10, the leakage plate 10 falls rapidly and generates vibration.

[0019] like Figure 4-Figure 6 As shown: When the contact rod 29 pushes the trigger member 6 to rotate, the trigger member 6 pushes the two baffles 5 to open through the driving rod 8, and the powder medicine inside the silo 1 falls through the leakage hole on the leakage plate 10 to complete the discharge. When the baffle 5 is opened, it will rotate from a horizontal to an inclined state. At this time, the baffle 5 will drive the turntable 11 and the top plate 12 to rotate. One side of the top plate 12 is restricted by the turntable 11, so that the top plate 12 can only rotate in one direction. When the top plate 12 rotates to contact the cylindrical outer end of the leakage plate 10, the leakage plate 10 will be lifted up from the inside of the chute 9. At this time, when the top plate 12 passes over the cylindrical end of the leakage plate 10, the leakage plate 10 falls quickly and generates vibration to prevent the medicine from being blocked inside the discharge port 4; When the baffle 5 is closed, the top sheet 12 rotates in the opposite direction and contacts the leakage plate 10 . At this time, the top sheet 12 directly rotates around the rotation axis and compresses the second torsion spring 13 to rotate the top sheet 12 , and then passes over the leakage plate 10 .

[0020] A base plate 30 is provided directly below the baffle 5, and the base plate 30 is fixedly connected to the fixing frame 2. A first motor 14 is fixedly connected to the bottom end of the base plate 30, and a rotating shaft of the first motor 14 extends through the base plate 30 to the top of the base plate 30, and a plurality of blades 15 are fixedly connected to the rotating shaft of the first motor 14.

[0021] like Figure 1 , Figure 7-Figure 9 As shown: When the medicine falls from the discharge port 4, it will fall on the liquid surface and will be in the middle position of the blade 15. At this time, the first motor 14 rotates to drive the blade 15 to rotate to disturb the water surface. Firstly, it can assist in crushing the powder medicine falling on the liquid surface to avoid its blockage. Secondly, it can increase the fluidity of the water surface after the powder and sewage are mixed, so that the sewage after the mixed medicine can diffuse to the surroundings, thereby improving the efficiency of drug administration.

[0022] A collar 16 is slidably connected to the bottom plate 30, and two second motors 17 are fixedly connected to the bottom plate 30. The rotating shafts of the two second motors 17 are fixedly connected to a connecting member 18. The ends of the collar 16 located on the connecting member 18 are provided with contact portions 19, and the ends of the contact portions 19 are located on one side of the rotation center of the connecting member 18.

[0023] like Figure 7-Figure 9 As shown: The collar 16 is in a normal state and is flush with the bottom plate 30 or slightly lower than the bottom plate 30. When the floating plate 3 is suspended above the water surface, the liquid level P of the sewage submerges half the height of the blade 15. The second motor 17 drives the connecting member 18 to rotate. When the connecting member 18 rotates to below the contact portion 19, the collar 16 is lifted up, and the rotation center of the connecting member 18 is on one side of the contact portion 19. When the connecting member 18 rotates upward to a vertical position, it passes over the contact portion 19 to make the collar 16 fall down quickly to complete the lifting of the collar 16. When the powder inside the silo 1 falls above the liquid surface, the rotation of the blades 15 assists in crushing and spreading the medicine. The lifting and lowering of the collar 16 separates the sewage from the bottom plate 30 and the collar 16, so that the sewage and the powder are mixed into a separate area, and the sewage is stirred by the blades 15 in a small range, thereby increasing the crushing effect of the powder. Then, when the collar 16 descends, the rotation of the blades 15 spreads the mixed sewage to the surroundings.

[0024] Two auxiliary brackets 20 are fixedly connected to the collar 16. The driving rod 8 is composed of a first support rod 21, a second support rod 22 and a spring 23. The first support rod 21 is slidably connected to the second support rod 22. The spring 23 is fixedly connected between the first support rod 21 and the second support rod 22. The top end of the first support rod 21 and the bottom end of the second support rod 22 are rotatably connected to the trigger member 6 and the baffle 5 respectively. When the two baffles 5 release the seal on the discharge port 4 , they will be in a tilted state, and the intermittent lifting of the auxiliary bracket 20 driven by the collar 16 can cause the two baffles 5 to swing.

[0025] like Figure 4 , Figure 7-Figure 10 As shown: When the trigger member 6 rotates, the first support rod 21 and the spring 23 push the second support rod 22 to drive the baffle 5 to rotate to open. After the baffle 5 rotates, it will contact the top of the auxiliary bracket 20, that is, Fig.10 The state shown, when the ring 16 drives the auxiliary bracket 20 to rise and fall, the auxiliary bracket 20 will rise and fall cyclically, and when the auxiliary bracket 20 rises, it will push the two baffles 5 to rotate to the left and right sides, at this time, the baffles 5 will drive the second bracket 22 to slide along the inside of the first support rod 21 and compress the spring, and the first support rod 21 and the second bracket 22 will also rotate accordingly; When the collar 16 descends and drives the auxiliary bracket 20 to descend, the spring 23 will be elastically relaxed, and the baffle 5 will also rotate toward the middle, and will intermittently lift the leakage plate 10 through the top plate 12 to generate vibration; When the two baffles 5 swing left and right, they can guide the falling powder medicine so that the medicine can be evenly discharged to a larger area below, thereby avoiding the risk of increasing agglomeration after the medicine is concentrated and mixed with sewage.

[0026] A plurality of water absorbing sleeves 24 are fixedly connected to the bottom end of the bottom plate 30 , and each of the water absorbing sleeves 24 is provided with an impeller.

[0027] like Figure 8 As shown: The impeller can be of various types in the prior art, which will not be described in detail. Its function is to slowly rotate inside the water absorption sleeve 24 so that the sewage stirred by the blades 15 can be more conveniently diffused to the surroundings, thereby increasing the range of drug delivery.

[0028] A return spring 25 is fixedly connected between the top of the leakage plate 10 and the inner wall of the slide groove 9 .

[0029] like Figure 5 As shown: When the leakage plate 10 rises along the slide groove 9, it will squeeze the return spring 25. When the top plate 12 passes over the cylindrical end of the leakage plate 10, the return spring 25 will easily drive the leakage plate 10 to fall quickly, thereby generating vibration to prevent the discharge port 4 from being blocked.

[0030] The CNC square sewage treatment equipment comprises a sewage treatment equipment body 26 , the inner wall of which is fixedly connected to two winding motors 27 , the rotating shafts of which are fixedly connected to pull ropes 28 , and the two pull ropes 28 are fixedly connected to two fixing frames 2 respectively.

[0031] like Figure 11-Figure 12 As shown: By winding up the pull rope 28 by the winding motor 27, the fixed frame 2 is lifted and lowered inside the sewage treatment equipment body 26 to automatically dosing the medicine. The equipment has a high degree of automation, low operating costs, and can realize remote APP process control.

Claims

1. A drug delivery structure, comprising a silo (1), characterized in that: Also includes: Two fixed frames (2) are symmetrically arranged with respect to the material bin (1) and are both fixedly connected to the material bin (1); A floating plate (3) is located below the two fixing frames (2) and is slidably connected to the two fixing frames (2) via two contact rods (29) fixed to the top of the floating plate (3); The discharge port (4) is located directly below the silo (1); Two baffles (5) are symmetrically distributed and rotatably connected to the bottom end of the silo (1), and the two baffles (5) are used to close the discharge port (4); Two trigger members (6) are rotatably connected to the two fixing frames (2) respectively, and the rotation axes of the two trigger members are sleeved with first torsion springs (7); The two driving rods (8) have top ends rotatably connected to the two trigger members (6) and bottom ends rotatably connected to the two blocking pieces (5).

2. A drug delivery structure according to claim 1, characterized in that: The inner wall of the discharge port (4) is provided with a slide groove (9), a leakage plate (10) is slidably connected inside the slide groove (9), the end of the leakage plate (10) extends to the outside of the discharge port (4), a plurality of leakage holes are provided on the leakage plate (10), two baffles (5) are located directly below the leakage plate (10), a rotating disk (11) is fixedly connected to the rotating shaft of one of the two baffles (5), and a plurality of rotating disks (11) are rotatably connected to the rotation shaft of the rotation disk (11). A top plate (12) is provided, and a second torsion spring (13) is sleeved on the rotation axis of each of the top plates (12). When the driving rod (8) pushes the baffle plate (5) to rotate and releases the blockage of the discharge port (4), the baffle plate (5) drives the turntable (11) to rotate. When the turntable (11) rotates, the top plate (12) contacts the ends of the leakage plate (10) in sequence and lifts up the leakage plate (10). When the top plate (12) passes over the leakage plate (10), the leakage plate (10) falls down quickly and generates vibration.

3. A drug delivery structure according to claim 2, characterized in that: A bottom plate (30) is arranged directly below the baffle (5), the bottom plate (30) being fixedly connected to the fixing frame (2), a first motor (14) being fixedly connected to the bottom end of the bottom plate (30), a rotating shaft of the first motor (14) passing through the bottom plate (30) and extending to above the bottom plate (30), and a plurality of blades (15) being fixedly connected to the rotating shaft of the first motor (14).

4. A drug delivery structure according to claim 3, characterized in that: A collar (16) is slidably connected to the bottom plate (30), two second motors (17) are fixedly connected to the bottom plate (30), the rotating shafts of the two second motors (17) are fixedly connected to a connecting member (18), and the ends of the collar (16) located on the connecting member (18) are provided with a contact portion (19), and the end of the contact portion (19) is located on one side of the rotation center of the connecting member (18).

5. A drug delivery structure according to claim 4, characterized in that: Two auxiliary brackets (20) are fixedly connected to the collar (16); the driving rod (8) is composed of a first support rod (21), a second support rod (22) and a spring (23); the first support rod (21) is slidably connected to the second support rod (22); the spring (23) is fixedly connected between the first support rod (21) and the second support rod (22); the top end of the first support rod (21) and the bottom end of the second support rod (22) are rotatably connected to the trigger member (6) and the baffle (5) respectively; When the two baffles (5) release the seal on the discharge port (4), they are in a tilted position, and the intermittent lifting and lowering of the auxiliary bracket (20) driven by the collar (16) can cause the two baffles (5) to swing.

6. A drug delivery structure according to claim 5, characterized in that: A plurality of water absorption sleeves (24) are fixedly connected to the bottom end of the bottom plate (30), and each of the water absorption sleeves (24) is provided with an impeller inside.

7. A drug delivery structure according to claim 1, characterized in that: A return spring (25) is fixedly connected between the top of the leakage plate (10) and the inner wall of the slide groove (9).

8. A numerically controlled square sewage treatment device, suitable for a drug-feeding structure as claimed in claims 1 to 7, comprising a sewage treatment device body (26), characterized in that: Two winding motors (27) are fixedly connected to the inner wall of the sewage treatment equipment body (26), the rotating shafts of the winding motors (27) are fixedly connected to pull ropes (28), and the two pull ropes (28) are respectively fixedly connected to the two fixing frames (2).