Automatic washing system for thickener overflow weir
By designing an automated thickener overflow weir flushing system, the automatic swinging of the duckbill valve is achieved by using a motor-driven swing block and transmission mechanism. This solves the dead zone problem of traditional thickener overflow weir flushing devices, improves cleaning efficiency and safety, and reduces manual labor intensity.
Patent Information
- Application Number
- CN202521772999.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-20
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-20
AI Technical Summary
Traditional thickener overflow weir flushing devices have blind spots and reduced spray pressure, resulting in poor flushing effect, and manual cleaning poses safety risks.
An automatic flushing system for the overflow weir of a thickener was designed. The system uses a motor to drive the oscillating block to rotate, and a transmission mechanism to drive the duckbill valve to automatically oscillate left and right for spraying. Combined with a sliding pair guide mechanism consisting of a slider and a chute, stability and accuracy are ensured.
It achieves fully automatic, thorough, and uniform rinsing of the thickener overflow weir, improving cleaning efficiency and quality, reducing labor intensity, and extending equipment lifespan.
Smart Images

Figure CN224672165U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of overflow weir flushing technology, specifically an automatic flushing system for a thickener overflow weir. Background Technology
[0002] The thickener overflow weir is a ring-shaped trough or effluent trough installed at the top edge of the thickener tank. Its core function is to control and discharge the upper clear liquid (i.e., overflow) after solid-liquid separation. By maintaining a fixed liquid level, it ensures sufficient static pressure for the underflow sludge to be discharged smoothly from the bottom, while preventing unsettled solid particles from entering the clear liquid. It is a key component for achieving efficient and continuous separation and ensuring that the overflow water quality meets standards.
[0003] Traditional thickener overflow weir ore treatment flushing devices mostly adopt a fixed nozzle structure, which has dead corners and significant spray pressure attenuation, thus failing to achieve good flushing effect and efficiency. Utility Model Content
[0004] The purpose of this invention is to provide an automatic flushing system for the overflow weir of a thickener, in order to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic flushing system for a thickener overflow weir, including a thickener overflow port, a thickener overflow weir body provided on one side of the thickener overflow port, a thickener overflow weir support channel steel provided inside the thickener overflow weir body, a main pipe provided on one side of the thickener overflow weir support channel steel, and a cleaning mechanism provided on the outer wall of the main pipe;
[0006] The cleaning mechanism includes a hose, which is fixedly connected to the bottom end of a main pipe. A connecting pipe is fixedly connected to the bottom end of the hose, and a duckbill valve is provided at the bottom end of the connecting pipe. A support ring is fixedly connected to the outer wall of the connecting pipe, and a fixing rod is fixedly connected to the outer wall of the support ring. A support frame is fixedly connected to the end of the fixing rod away from the support ring. A second support frame is fixedly connected to the outer wall of the main pipe, and a protective box is fixedly connected to the bottom of the second support frame. A motor is fixedly connected to the inner wall of the protective box, and a push shaft is provided inside the support frame. A swing block is fixedly connected to the end of the push shaft away from the support frame.
[0007] The motor output end is fixedly connected to an output shaft, and the swing block is fixedly connected to the outer wall of the output shaft. The output shaft passes through one side of the protective box and rotates, so that the motor can drive the swing block to rotate through the output shaft.
[0008] The support frame has a slot on the side away from the fixed rod, and the push shaft is movably connected to the inner wall of the slot, so that the push shaft can push the support frame to move through the slot, thereby achieving the purpose of oscillating and rinsing the duckbill valve.
[0009] A slider is fixedly connected to the outer wall of the fixed rod, and a support frame is fixedly connected to the outer wall of the main pipe. A sliding groove is fixedly connected to the bottom of the support frame, and the slider is slidably connected to the inner wall of the sliding groove to ensure the stability of the duckbill valve during the swinging process.
[0010] The duckbill valve is connected to the bottom of the connecting pipe via a flange. The main pipe, hose, connecting pipe and duckbill valve are connected in sequence, thereby enabling the delivery of cleaning water.
[0011] Compared with the prior art, this utility model provides an automatic flushing system for the overflow weir of a thickener, which has the following beneficial effects:
[0012] 1. This utility model uses a motor to drive the oscillating block to rotate, and a transmission mechanism consisting of a push shaft, a support frame, and a fixed rod converts the rotational motion into the reciprocating oscillation of the connecting pipe, thereby driving the duckbill valve to automatically oscillate and spray left and right. The beneficial effect of this structure is that it achieves fully automatic, thorough, and uniform rinsing of the thickener overflow weir. Compared with traditional manual cleaning methods, it can improve cleaning efficiency and quality, while effectively avoiding the safety risks of personnel working in high-risk environments and reducing labor intensity.
[0013] 2. This utility model, by setting up a sliding pair guide mechanism composed of a slider and a groove, ensures the linear motion accuracy and overall stability of the fixed rod and duckbill valve during reciprocating swing. The beneficial effects of this structure are that it effectively prevents the spray device from shaking or jamming during operation, ensuring the accuracy and consistency of the water spray trajectory, making the cleaning operation more reliable; at the same time, the motor is sealed in a protective box, extending its service life under high humidity and dusty conditions, and reducing maintenance costs. Attached Figure Description
[0014] Figure 1 This is a top view of the structure of this utility model;
[0015] Figure 2 This is a front view of the structure of this utility model;
[0016] Figure 3 This is a front view of the general manager's office;
[0017] Figure 4 This is a bottom view of the general manager's office;
[0018] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.
[0019] In the diagram: 1. Thickener overflow port; 2. Cleaning mechanism; 21. Hose; 22. Connecting pipe; 23. Duckbill valve; 24. Support ring; 25. Fixing rod; 26. Slider; 27. Slide groove; 28. Support frame one; 29. Support frame; 201. Push shaft; 202. Swing block; 203. Motor; 204. Protective box; 205. Support frame two; 3. Main pipe; 4. Thickener overflow weir body; 5. Thickener overflow weir support channel steel. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] This utility model provides the following technical solution:
[0022] Combination Figures 1 to 5 An automatic flushing system for a thickener overflow weir includes a thickener overflow port 1, a thickener overflow weir body 4 on one side of the thickener overflow port 1, a thickener overflow weir support channel steel 5 on the inner side of the thickener overflow weir body 4, a main pipe 3 on one side of the thickener overflow weir support channel steel 5, and a cleaning mechanism 2 on the outer wall of the main pipe 3. By integrating the cleaning mechanism 2 onto the main pipe 3 and placing it adjacent to the thickener overflow weir body 4 and the thickener overflow weir support channel steel 5, an integrated automatic cleaning device is formed, which realizes efficient and automated in-situ cleaning of the overflow weir, significantly improving the efficiency and convenience of cleaning operations and overcoming the difficulties and dangers of manual cleaning.
[0023] Cleaning mechanism 2 includes a hose 21, which is fixedly connected to the bottom end of the main pipe 3. A connecting pipe 22 is fixedly connected to the bottom end of the hose 21. A duckbill valve 23 is provided at the bottom end of the connecting pipe 22. A support ring 24 is fixedly connected to the outer wall of the connecting pipe 22. A fixing rod 25 is fixedly connected to the outer wall of the support ring 24. A support frame 29 is fixedly connected to the end of the fixing rod 25 away from the support ring 24. A second support frame 205 is fixedly connected to the outer wall of the main pipe 3. A protective box 204 is fixedly connected to the bottom of the second support frame 205. The inner wall of the protective box 204 is fixedly connected to... There is a motor 203, and a push shaft 201 is set inside the support frame 29. The end of the push shaft 201 away from the support frame 29 is fixedly connected to a swing block 202. The motor 203 drives the transmission chain consisting of the swing block 202, the push shaft 201, the support frame 29, the fixed rod 25 and the support ring 24, which ultimately drives the connecting pipe 22 and the duckbill valve 23 to swing, realizing stable automatic reciprocating swing spraying. The cleaning coverage is large and there are no dead corners. The motor 203 is placed in the protective box 204, which is effectively protected and has a long service life.
[0024] The output end of the motor 203 is fixedly connected to an output shaft, and the swing block 202 is fixedly connected to the outer wall of the output shaft. The output shaft passes through one side of the protective box 204 and rotates, ensuring the directness and reliability of the power output of the motor 203. The structure is simple and compact, and the transmission efficiency is high. The design of the output shaft passing through the protective box 204 ensures power transmission while maintaining the sealing of the protective box 204 to the greatest extent, effectively preventing water vapor and dust from entering and protecting the core components of the motor.
[0025] A slot is provided on the side of the support frame 29 away from the fixed rod 25. The push shaft 201 is movably connected to the inner wall of the slot. The movable connection between the slot and the push shaft 201 constitutes an efficient swing conversion mechanism, which converts the rotational motion of the swing block 202 into the linear reciprocating motion of the support frame 29. The structure is simple and the operation is reliable. It realizes the stable swing of the duckbill valve 23 at a specific angle and frequency, ensuring a uniform spray rinsing effect.
[0026] A slider 26 is fixedly connected to the outer wall of the fixed rod 25, and a support frame 28 is fixedly connected to the outer wall of the main pipe 3. A groove 27 is fixedly connected to the bottom of the support frame 28. The slider 26 is slidably connected to the inner wall of the groove 27. The sliding guide pair formed by the slider 26 and the groove 27 provides precise constraint and guidance for the movement of the fixed rod 25 and the entire spray component connected to it, effectively preventing shaking and deviation during the movement, enhancing the stability and reliability of the duckbill valve 23 swing process, and ensuring the accurate landing point of the flushing water flow.
[0027] The duckbill valve 23 is connected to the bottom of the connecting pipe 22 via a flange. The main pipe 3, hose 21, connecting pipe 22 and duckbill valve 23 are connected in sequence. The flange connection facilitates the installation, disassembly and replacement of the duckbill valve 23 and makes maintenance convenient. The internally connected flow channel design ensures that the cleaning water can be smoothly delivered from the main pipe 3 to the duckbill valve 23 and sprayed out. The hose 21 allows the connecting pipe 22 to swing flexibly within a certain range without affecting the water supply. The duckbill valve 23 can form a flat fan-shaped spray surface with a wide coverage and high cleaning efficiency.
[0028] In actual operation, when this device is used, the main pipe 3 can sequentially deliver the cleaning water to the hose 21, the connecting pipe 22 and the duckbill valve 23. The motor 203 is started and the output shaft of the motor 203 can drive the swing block 202 to rotate. The swing block 202 can push the support frame 29 to move through the push shaft 201, so that the support frame 29 can drive the fixed rod 25 to move. The fixed rod 25 can drive the connecting pipe 22 to move through the support ring 24, thereby realizing the left and right swing of the duckbill valve 23, achieving good spray rinsing quality and efficiency. At the same time, by using the motor 203, the automatic swing can be achieved.
Claims
1. An automatic flushing system for a thickener overflow weir, comprising a thickener overflow port (1), characterized in that: A thickener overflow weir body (4) is provided on one side of the thickener overflow port (1), a thickener overflow weir support channel steel (5) is provided on the inner side of the thickener overflow weir body (4), a main pipe (3) is provided on one side of the thickener overflow weir support channel steel (5), and a cleaning mechanism (2) is provided on the outer wall of the main pipe (3). The cleaning mechanism (2) includes a hose (21), which is fixedly connected to the bottom end of the main pipe (3). A connecting pipe (22) is fixedly connected to the bottom end of the hose (21). A duckbill valve (23) is provided at the bottom end of the connecting pipe (22). A support ring (24) is fixedly connected to the outer wall of the connecting pipe (22). A fixing rod (25) is fixedly connected to the outer wall of the support ring (24). A support frame (29) is fixedly connected to the end of the fixing rod (25) away from the support ring (24). A second support frame (205) is fixedly connected to the outer wall of the main pipe (3). A protective box (204) is fixedly connected to the bottom of the second support frame (205). A motor (203) is fixedly connected to the inner wall of the protective box (204). A push shaft (201) is provided inside the support frame (29). A swing block (202) is fixedly connected to the end of the push shaft (201) away from the support frame (29).
2. The automatic flushing system for a thickener overflow weir according to claim 1, characterized in that: The output end of the motor (203) is fixedly connected to an output shaft, and the swing block (202) is fixedly connected to the outer wall of the output shaft. The output shaft passes through one side of the protective box (204) and rotates.
3. The automatic flushing system for a thickener overflow weir according to claim 1, characterized in that: The support frame (29) has a slot on the side away from the fixed rod (25), and the push shaft (201) is movably connected to the inner wall of the slot.
4. The automatic flushing system for a thickener overflow weir according to claim 1, characterized in that: The outer wall of the fixed rod (25) is fixedly connected to a slider (26), the outer wall of the main pipe (3) is fixedly connected to a support frame (28), the bottom of the support frame (28) is fixedly connected to a groove (27), and the slider (26) is slidably connected to the inner wall of the groove (27).
5. The automatic flushing system for a thickener overflow weir according to claim 1, characterized in that: The duckbill valve (23) is connected to the bottom end of the connecting pipe (22) via a flange, and the main pipe (3), hose (21), connecting pipe (22) and duckbill valve (23) are connected in sequence.