Foam driving device of sewage treatment tank

Abstract

The invention relates to the field of sewage treatment, in particular to a foam driving device of a sewage treatment pond, which is applied to the sewage treatment pond and comprises an annular water tank and a wave making mechanism, a support column is fixedly arranged on the sewage treatment pond, and the wave making mechanism comprises an annular body structure with expansion and contraction effects and a driving assembly. The ring body structure is arranged on the supporting column in a sleeving mode, the lower half portion of the ring body structure is located below the liquid level, the upper half portion of the ring body structure is located above the liquid level, a plurality of driving plates are evenly distributed on the inner side of the ring body structure in the circumferential direction of the supporting column, and all the driving plates are in transmission connection with the driving assembly; through expansion movement of the ring body structure, namely in the process of moving the driving plate to the outer side, the whole ring body structure is expanded, thrust is applied to a water body around the outer side of the ring body structure, strong and uniform waves are formed, foam discharging is accelerated, and the comprehensiveness and efficiency of foam treatment are improved.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment, in particular to a foam driving device for a sewage treatment pool. Background Art

[0002] Sewage usually refers to the discharged water from life and production that is polluted to a certain extent. Sewage mainly includes domestic sewage, industrial wastewater and initial rainwater. The main pollutants in sewage include pathogen pollutants, oxygen-consuming pollutants, plant nutrients and toxic pollutants. In the process of production and life, pollutants such as wastewater and scum will be produced. In the process of sewage treatment plants treating the collected sewage through sewage pools, there are organic substances and grease in the sewage. These organic substances and grease are oxidized and decomposed during the treatment process, which will produce gas and thus foam. At the same time, some organic matter that cannot be decomposed will settle and produce certain foam. However, the existing technology eliminates it by adding defoaming agents, but it cannot completely eliminate the foam and the elimination effect is poor. Therefore, it is necessary to cooperate with manual treatment of the uneliminated foam, which has high labor intensity and low efficiency.

[0003] The currently disclosed Chinese patent CN220165888U discloses a foam driving device for a sewage treatment pool, which is arranged in the sewage treatment pool and includes a fixed column arranged in the sewage treatment pool. A mounting platform is provided on the top of the fixed column. A plurality of nozzles are arranged in an annular shape on the mounting platform and are oriented outward to spray water outward from the middle of the sewage treatment pool to form a liquid level difference with the outer liquid surface. A water inlet pipe is arranged in an annular shape on the mounting platform. One end of the nozzle is connected to the water inlet pipe through a connecting hose, and the nozzle is connected, fixed and angle-adjusted by a cylinder arranged on the mounting platform. A foam driving auxiliary component is rotatably installed on the fixed column below the mounting platform. The foam driving auxiliary component includes a rotating bearing fixedly installed on the fixed column. A driving motor is provided on the mounting platform. The rotating shaft of the driving motor passes through a mounting hole provided on the mounting platform, and a driving gear is provided at the lower end to mesh with a driven gear arranged at the upper end of the rotating bearing to drive it to rotate. A horizontally arranged driving plate is connected to the rotating bearing, and the driving plate rotates on the water surface to drive the water surface to flow outward.

[0004] According to the above patent, a plurality of nozzles for spraying water outward are arranged in the sewage treatment pool, and a liquid level difference is formed between the middle and the outside of the sewage treatment pool during the water spraying process. The driving plate is rotated, and the driving plate contacts the liquid surface in the pool to make the water in the middle form waves or flow outward, driving the foam to move to the outside and then flow out to complete the foam elimination in the pool. However, due to the rotation of the driving plate, some foam may gather on the inside of the driving plate or other dead corners, which is difficult to be effectively driven to the outside, resulting in incomplete foam removal. Therefore, there is a need for a driving device that can ensure that the foam in the sewage treatment pool is completely driven out, forming a more uniform and controllable water wave, and effectively pushing the foam to the designated collection area. Summary of the invention

[0005] In view of the problems existing in the prior art, a foam driving device for a sewage treatment pool is provided. The present invention causes the overall expansion of the ring structure through the expansion movement of the ring structure, that is, through the process of the driving plate moving outward, so as to apply thrust to the water body around the outside of the ring structure, thereby forming strong and uniform waves, accelerating the discharge of foam, and improving the comprehensiveness and efficiency of foam treatment.

[0006] In order to solve the problems of the prior art, the present invention provides a foam driving device for a sewage treatment pool, which is applied in the sewage treatment pool and includes an annular water tank arranged in a surrounding form at the edge of the sewage treatment pool, and a wave making mechanism arranged in the center of the sewage treatment pool, wherein the sewage treatment pool is fixedly provided with a pillar for installing the wave making mechanism, and the wave making mechanism includes a ring structure with expansion and contraction effects, and a driving component for driving the ring structure to move, wherein the ring structure is sleeved on the pillar, the lower half of the ring structure is located below the liquid surface, the upper half of the ring structure is located above the liquid surface, and the ring structure The lower end is sealed and connected to the pillar, and a plurality of driving plates are evenly distributed on the inner side of the ring structure in the circumferential direction around the pillar, all of which are transmission-connected to the driving assembly, and the inner side of the ring structure is fitted to all of the driving plates. The pillar is vertically arranged in the sewage treatment tank, and each of the driving plates can move in a direction perpendicular to the axis of the pillar. When the driving assembly synchronously drives all of the driving plates to move outward, the ring structure expands as a whole following the movement of all of the driving plates, so that the water surrounding the ring structure in the sewage treatment tank forms waves outward, thereby driving the foam to flow into the annular water tank.

[0007] Preferably, the sewage treatment tank has an inner annular surface and an outer annular surface, an annular water trough is formed between the inner annular surface and the outer annular surface, the height of the inner annular surface is lower than the height of the outer annular surface, and the edge of the outer annular surface is provided with a water outlet connected to the annular water trough, when the sewage liquid level exceeds the upper end surface of the inner annular surface, the foam on the liquid surface can enter the annular water trough.

[0008] Preferably, a net bag is provided in the annular water trough, which is surrounded therein and opened upward, and the net bag has an inner circumferential edge and an outer circumferential edge, the outer circumferential edge is fixedly connected to the outer annular surface, the inner circumferential edge is fixedly provided with a ring piece that is in sliding contact with the inner annular surface and tightly fits, and a water storage tank body with a water replenishment port and a water outflow port is provided around the top of the outer circumferential edge. When the ring piece moves upward to its upper end above the liquid level, the foam is blocked by the ring piece and cannot enter the net bag. At this time, the water storage tank body opens the water outflow port to allow clean water to flow into the net bag and take away the attached foam. Conversely, when the ring piece moves downward to its upper end submerged in water, the foam can flow into the net bag, and the water storage tank body closes the water outflow port.

[0009] Preferably, the bottom surface of the water storage tank body is provided with the water flow outlet which surrounds it, and an opening and closing valve is provided at the water flow outlet. A trigger member which cooperates with the opening and closing valve is provided on the ring plate. When the ring plate moves upward until its upper end is higher than the liquid level, the trigger member moves upward with the ring plate, causing the opening and closing valve to open the water flow outlet. Conversely, when the ring plate moves downward until its upper end is submerged in water, the trigger member moves downward with the ring plate, causing the opening and closing valve to close the water flow outlet under its own action.

[0010] Preferably, a linkage component is connected between each driving plate and the ring piece. When the driving plate remains in place, the ring piece is in a docking state with the water storage tank body under the action of the linkage component, so that the upper end of the ring piece is higher than the liquid level. Conversely, when the driving plate moves outward, the ring piece is disconnected from the water storage tank body under the action of the linkage component, so that the upper end of the ring piece is submerged in water.

[0011] Preferably, the bottom surface of the water storage tank body has an extended edge extending downward, and a water gap is formed between the extended edge and the ring piece for foam to flow into the net bag after the upper end of the ring piece is immersed in water. The edge of the ring piece has a step that can contact the extended edge. When the step contacts the extended edge, the water gap is closed, and at the same time, the water outlet on the water storage tank body is fully opened under the action of the trigger member on the opening and closing valve.

[0012] Preferably, a gravity block for increasing the weight of the ring piece is fixedly provided on the inner surface of the ring piece.

[0013] Preferably, a sealing ring is fixedly provided on the inner ring surface of the sewage treatment tank, which surrounds the inner ring surface and fits with the inner surface of the ring sheet.

[0014] Preferably, the linkage assembly includes a pull rope fixedly connected between the driving plate and the gravity block, and a guide wheel for the pull rope to pass around from above, the guide wheel is located above the gravity block, and an axial connection for the guide wheel to be rotatably connected is fixedly provided on the water storage tank body.

[0015] Preferably, the sewage treatment tank is provided with a liquid level sensor for detecting the height of the sewage liquid level therein.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention uses the expansion movement of the ring structure of the wave-making mechanism, that is, the process of the driving plate moving outward, which causes the ring structure to expand as a whole, exerts thrust on the water around the outside of the ring structure. Since the driving plate moves perpendicular to the axis of the pillar, the water around the ring structure is pushed outward forcefully, forming strong and uniform waves, accelerating the discharge of foam. Compared with the traditional method of rotating the driving plate, it ensures that the foam on the liquid surface is fully driven outward, realizes the effective management of the foam in the sewage treatment pool, and improves the comprehensiveness and efficiency of the foam treatment.

[0018] 2. The present invention realizes the flushing of the net bag through the up and down movement of the ring piece and the precise control of the water storage tank body. Regular flushing of the net bag not only removes the foam, but also reduces the retention of organic matter and other pollutants carried by the foam in the net bag, avoids the accumulation of a large amount of foam inside the net bag, can continuously and effectively collect new foam, and avoids reducing the rate of driving the foam into the net bag due to foam clogging, thereby ensuring a smooth and efficient foam treatment process.

[0019] 3. The present invention realizes the up and down movement of the ring piece by the pull rope of the linkage assembly following the movement of the driving plate, and controls the linkage between the trigger member and the opening and closing valve at the same time. As the ring piece moves up, the trigger member thereon interacts with the opening and closing valve at the bottom of the water storage bin, causing the opening and closing valve to open, the water flow gap to be closed, and the opened water inlet to introduce clean water into the net bag to mix with the foam, effectively stripping the foam and carrying it through the net bag for discharge, thereby ensuring the cleanliness of the inside of the net bag. As the ring piece descends, the trigger member thereon moves downward accordingly, causing the opening and closing valve to close, the water flow gap to be opened, the clean water injection to stop, and the net bag to continue to collect foam, thereby realizing the automation of foam processing in the net bag and ensuring the continuity of foam driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a three-dimensional structural schematic diagram of a foam driving device of a sewage treatment pool.

[0021] Figure 2 The present invention is a partial plan cross-sectional view of a foam driving device of a sewage treatment tank.

[0022] Figure 3 The present invention is a partial three-dimensional structural cross-sectional view of a foam driving device of a sewage treatment pool.

[0023] Figure 4 The present invention is a schematic diagram of a state in which the upper end of a ring plate of a foam driving device of a sewage treatment pool is higher than the liquid surface.

[0024] Figure 5 The present invention is a schematic diagram of a state in which the upper end of a ring plate of a foam driving device of a sewage treatment pool is submerged in water.

[0025] Figure 6 yes Figure 3 An enlarged schematic diagram of point A.

[0026] Figure 7 yes Figure 2 An enlarged schematic diagram of point B.

[0027] Figure 8 yes Figure 2 Enlarged schematic diagram of point C.

[0028] Fig. 9 The present invention is a three-dimensional structural schematic diagram of a wave-making mechanism of a foam driving device of a sewage treatment tank.

[0029] Fig.10 The present invention is a partial three-dimensional structural cross-sectional view of a wave-making mechanism of a foam driving device of a sewage treatment tank.

[0030] The numbers in the figure are: 1, sewage treatment tank; 11, pillar; 2, annular water tank; 21, inner ring surface; 22, outer ring surface; 221, water outlet; 3, wave making mechanism; 31, ring structure; 311, driving plate; 3111, guide rod; 3112, guide sleeve; 32, driving assembly; 321, rotating ring sleeve; 322, connecting rod; 4, net bag; 41, inner edge; 411, ring piece; 4 111. step; 4112. gravity block; 4113. sealing ring; 42. outer edge; 5. water storage tank body; 51. water filling port; 52. water flow port; 521. opening and closing valve; 5211. piston; 5212. rod; 5213. spring; 522. trigger; 53. extension edge; 531. water gap; 6. linkage assembly; 61. pull rope; 62. guide wheel; 621. shaft connection. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] See also Figure 1-Figure 5 , Fig. 9 and Fig.10As shown, a foam driving device for a sewage treatment pool is applied in a sewage treatment pool 1, comprising an annular water tank 2 arranged in a surrounding form at the edge of the sewage treatment pool 1, and a wave making mechanism 3 arranged in the center of the sewage treatment pool 1, wherein a pillar 11 for installing the wave making mechanism 3 is fixedly provided on the sewage treatment pool 1, and the wave making mechanism 3 comprises an annular structure 31 with expansion and contraction effects, and a driving assembly 32 for driving the annular structure 31 to move, wherein the annular structure 31 is sleeved on the pillar 11, the lower half of the annular structure 31 is located below the liquid surface, and the upper half of the annular structure 31 is located above the liquid surface, and the lower end of the annular structure 31 is sealed and connected to the pillar 11, A plurality of driving plates 311 are evenly distributed on the inner side of the ring structure 31 in the circumferential direction around the pillar 11, and all the driving plates 311 are transmission-connected to the driving assembly 32. The inner side of the ring structure 31 fits all the driving plates 311. The pillar 11 is vertically arranged in the sewage treatment tank 1. Each of the driving plates 311 can move in a direction perpendicular to the axis of the pillar 11. When the driving assembly 32 synchronously drives all the driving plates 311 to move outward, the ring structure 31 follows the movement of all the driving plates 311 and expands as a whole, so that the water surrounding the ring structure 31 in the sewage treatment tank 1 forms waves outward, thereby driving the foam to flow into the annular water tank 2.

[0033] The ring structure 31 is specifically a bag cover mounted on all the driving plates 311, the lower end of the bag cover is fixedly connected to the pillar 11, the inner side of the bag cover is fixedly connected to all the driving plates 311, and the bag cover can deform following the movement of the driving plates 311 to push the sewage around the bag cover as a whole.

[0034] The driving assembly 32 includes a rotating ring sleeve 321 rotatably mounted on the pillar 11, and a connecting rod 322 hinged between each driving plate 311 and the rotating ring sleeve 321. The inner side of each driving plate 311 has a guide rod 3111 extending vertically toward the pillar 11. The pillar 11 has a guide sleeve 3112 at a position corresponding to each guide rod 3111 for guiding it. The guide rod 3111 is slidably inserted in the guide sleeve 3112.

[0035] When the foam in the sewage treatment tank 1 is driven away, the driving assembly 32 is started, that is, the rotating ring 321 is driven to rotate back and forth by the rotating driver, which is not shown in the figure. The power is transmitted by the connecting rod 322 hinged between each driving plate 311 and the rotating ring 321. At this time, the ring structure 31 installed on the central pillar 11 of the sewage treatment tank 1 follows the movement of the driving plate 311, and the multiple driving plates 311 evenly distributed inside are driven by the connecting rod 322 and move outward synchronously. In the process of the driving plate 311 moving outward, the ring structure 31, that is, the capsule The sleeve expands as a whole, exerting thrust on the water around the outside of the sleeve. Due to the movement of the driving plate 311 perpendicular to the axial direction of the support 11, the water around the sleeve is forcefully pushed outward to form continuous and powerful waves. As the waves spread, the foam accumulated on the water surface is affected by the power radiating from the center to the surrounding areas, and is effectively guided to the annular water tank 2 at the edge of the sewage treatment pool 1, which promotes the effective separation of foam and water and facilitates subsequent collection and treatment. The expansion and contraction cycle of the ring structure 31 ensures the continuous expulsion of the foam on the entire pool surface and maintains the efficient progress of the sewage treatment process.

[0036] See also Figure 2-Figure 6 As shown, the sewage treatment tank 1 has an inner annular surface 21 and an outer annular surface 22, and the annular water tank 2 is formed between the inner annular surface 21 and the outer annular surface 22. The height of the inner annular surface 21 is lower than the height of the outer annular surface 22. The edge of the outer annular surface 22 is provided with a water outlet 221 connected to the annular water tank 2. When the sewage liquid level exceeds the upper end surface of the inner annular surface 21, the foam on the liquid surface can enter the annular water tank 2.

[0037] The height difference between the inner annular surface 21 and the outer annular surface 22 of the sewage treatment tank 1, and the water outlet 221 opened on the outer annular surface 22, together constitute a foam outlet channel. As the sewage to be treated is continuously injected into the tank, the liquid level gradually rises. Due to daily operation, a large number of bubbles will be generated during the sewage treatment process. These bubbles accumulate on the surface of the water body to form a foam layer. When the sewage liquid level reaches and exceeds the upper end surface of the inner annular surface 21, the foam naturally overflows into the annular water tank 2 due to buoyancy, and under the action of the wave making mechanism 3, the foam is accelerated to flow into the annular water tank 2. The annular water tank 2 serves as a temporary foam collection area. Its depth allows the foam to accumulate in it and is not easy to return to the sewage treatment tank 1. As the sewage continues to flow in, the foam on the liquid surface gradually flows into the annular water tank 2, and is finally discharged smoothly through the water outlet 221 at the edge of the outer annular surface 22, so that the foam is separated from the water body.

[0038] See also Figure 2-Figure 6As shown, a net bag 4 is provided in the annular water trough 2, which is surrounded therein and opened upward. The net bag 4 has an inner peripheral edge 41 and an outer peripheral edge 42. The outer peripheral edge 42 is fixedly connected to the outer annular surface 22. The inner peripheral edge 41 is fixedly provided with a ring piece 411 which is in sliding contact with the inner annular surface 21 and tightly fitted. A water storage tank body 5 with a water replenishment port 51 and a water flow port 52 is provided around the top of the outer peripheral edge 42. When the ring piece 411 moves upward to its upper end above the liquid level, the foam is blocked by the ring piece 411 and cannot enter the net bag 4. At this time, the water storage tank body 5 opens the water flow port 52 to allow clean water to flow into the net bag 4 and take away the attached foam. Conversely, when the ring piece 411 moves downward to its upper end submerged in water, the foam can flow into the net bag 4, and the water storage tank body 5 closes the water flow port 52.

[0039] When foam accumulates during the sewage treatment process, the control system starts the command for the ring piece 411 to move upward. As the ring piece 411 slowly rises, its upper end gradually rises above the liquid level, forming an effective foam isolation barrier. At this time, the foam cannot pass through the ring piece 411 to enter the net bag 4, effectively preventing the accumulation of new foam and creating conditions for the removal of foam inside the net bag 4. After the ring piece 411 is in a high position, the water inlet 52 of the water storage tank body 5 is opened, and clean water is injected from the water replenishment port 51, flowing downward through the net bag 4, carrying and flushing away the foam attached to the net bag 4. These foams follow the water flow through the net bag 4, cleaning the net bag 4 and avoiding a large amount of foam from accumulating in the net bag 4. After cleaning, the ring piece 411 descends until its upper end is submerged below the liquid level. At this time, the net bag 4 is reopened to allow new foam to flow in. At the same time, the water storage tank body 5 closes the water inlet 52 and stops the supply of clean water to ensure that the net bag 4 can perform its effectiveness in the next round of foam collection cycle, thereby realizing the cyclical cycle of foam treatment and maintaining the continuous and efficient sewage treatment.

[0040] See also Figure 3-Figure 6 As shown, the bottom surface of the water storage tank body 5 is provided with the water outlet 52 which surrounds it, and the water outlet 52 is provided with an opening and closing valve 521. The ring piece 411 is provided with a triggering member 522 which cooperates with the opening and closing valve 521. When the ring piece 411 moves upward until its upper end is higher than the liquid level, the triggering member 522 moves upward with the ring piece 411, causing the opening and closing valve 521 to open the water outlet 52. Conversely, when the ring piece 411 moves downward until its upper end is submerged in water, the triggering member 522 moves downward with the ring piece 411, causing the opening and closing valve 521 to close the water outlet 52 under its own action.

[0041] Each time foam enters the net bag 4, the ring piece 411 starts to move upward. As the ring piece 411 moves upward and exceeds the liquid level, the triggering member 522 installed on the ring piece 411 also moves upward and interacts with the opening and closing valve 521 at the bottom of the water storage tank body 5, prompting the opening and closing valve 521 to open, immediately starting the clean water injection process, and entering the net bag 4 through the water flow port 52, starting the flushing process of the net bag 4. The opened water flow port 52 allows clean water to flow into the net bag 4, contact and mix with the foam on the inner wall and bottom of the net bag 4, The foam is effectively stripped and carried away, and then discharged through the net bag 4, ensuring the continuous cleaning of the inside of the net bag 4 and preparing for the next stage of foam collection. After completing the cleaning operation, the ring piece 411 moves downward until its upper end is re-submerged below the liquid surface. In this process, the trigger member 522 on the ring piece 411 moves downward accordingly, and the opening and closing valve 521 coordinated therewith loses the trigger state, and is thus closed under the action of the opening and closing valve 521 itself, thereby cutting off the inflow channel of clean water and avoiding unnecessary loss of water resources.

[0042] See also Figure 2 , Figure 3 and Figure 6 As shown, a linkage assembly 6 is connected between each driving plate 311 and the ring piece 411. When the driving plate 311 remains in place, the ring piece 411 is in a docking state with the water storage tank body 5 under the action of the linkage assembly 6, so that the upper end of the ring piece 411 is higher than the liquid surface. Conversely, when the driving plate 311 moves outward, the ring piece 411 is disconnected from the water storage tank body 5 under the action of the linkage assembly 6, so that the upper end of the ring piece 411 is submerged in water.

[0043] In the initial state, each driving plate 311 remains in place and does not create waves. At this time, the ring piece 411 connected thereto is positioned at a position docking with the water storage tank body 5 through the action of the linkage assembly 6, ensuring that the upper end of the ring piece 411 is above the water surface, creating conditions for subsequent flushing operations. At this time, the opening and closing valve 521 at the bottom of the water storage tank body 5 is in a state of opening the water outlet 52 under the action of the trigger member 522. When the driving plate 311 moves outward to create waves, it is transmitted to the ring piece 411 through the linkage assembly 6, causing it to move downward and disengage from the docking state with the water storage tank body 5. The ring piece 411 sinks accordingly, and its upper end is submerged in the water. At this time, the opening and closing valve 521 immediately closes the water outlet 52, and the foam on the liquid surface continues to flow into the net bag 4.

[0044] See also Figure 3-Figure 6As shown, the bottom surface of the water storage tank body 5 has an extension edge 53 extending downward, and a water gap 531 is formed between the extension edge 53 and the ring piece 411 for foam to flow into the net bag 4 after the upper end of the ring piece 411 is immersed in water. The edge of the ring piece 411 has a step 4111 that can contact the extension edge 53. When the step 4111 contacts the extension edge 53, the water gap 531 is closed, and at the same time, the water outlet 52 on the water storage tank body 5 is fully opened under the action of the trigger member 522 on the opening and closing valve 521.

[0045] The opening and closing valve 521 has a piston 5211 that can be embedded in the water outlet 52, and the piston 5211 has multiple rods 5212 extending upward. The top surface of the water storage tank body 5 is provided with a socket for the rods 5212 to pass through and play a guiding role. Each of the rods 5212 is sleeved with a spring 5213 fixedly connected between the piston 5211 and the water storage tank body 5. When the spring 5213 is in a state of not being acted upon by external force, the piston 5211 is in a state of blocking the water outlet 52.

[0046] The ring sheet 411 is surrounded by a trigger member 522 . The trigger member 522 is specifically a top plate that can pass through the water outlet 52 . The lower end of the top plate is fixedly connected to the step 4111 , and the upper end of the top plate extends vertically upward to contact the piston 5211 .

[0047] A certain water gap 531 is maintained between the bottom extension edge 53 of the water storage tank body 5 and the ring piece 411, allowing bubbles to flow freely into the net bag 4. At this time, the step 4111 on the edge of the ring piece 411 does not contact the extension edge 53, and the water gap 531 is open. At the same time, the piston 5211 of the opening and closing valve 521 is embedded in and blocks the water outlet 52 due to the natural tension of the spring 5213, preventing the flow of clean water. As bubbles accumulate in the net bag 4, the movement of the driving plate 311 causes the ring piece 411 to sink until the step 4111 on its edge contacts the extension edge 53, closing the water gap 531 and preventing more bubbles from flowing into the net bag 4, thereby preparing for the subsequent flushing process. When the ring piece 411 rises to the point where the step 4111 contacts the extension edge 53, the trigger valves around the ring piece 411 are Component 522, that is, the top plate pushes the piston 5211, and the insertion rod 5212 on the piston 5211 moves stably under the guidance of the socket on the top surface of the water storage tank body 5, and at the same time compresses the spring 5213. As the spring 5213 is compressed, the piston 5211 moves upward, disengages from the water outlet 52, and fully opens the water outlet 52. At this time, the pre-stored clean water is rapidly injected into the net bag 4 through the water outlet 52 under the action of the pressure difference, and the foam flushing process begins. The water flow mixes with the foam in the net bag 4, effectively peeling off the foam and bringing it out of the net bag 4. After the flushing process is over, the ring piece 411 descends, the step 4111 leaves the extension edge 53, and the water gap 531 is reopened. The piston 5211 returns to its original position under the action of the restoring force of the spring 5213, and blocks the water outlet 52 again, and continues to allow the foam to flow into the net bag 4.

[0048] See also Figure 4-Figure 7 As shown, a gravity block 4112 is fixedly disposed on the inner surface of the ring piece 411 to increase its own weight.

[0049] The gravity block 4112 increases the weight of the ring piece 411, making the lifting and lowering of the ring piece 411 more stable, ensuring the stability of the docking or separation process with the water storage tank body 5. When the driving plate 311 moves to cause the ring piece 411 to sink through the linkage assembly 6, the gravity block 4112 can help the ring piece 411 to descend faster and more forcefully, thereby accelerating the moving speed of the ring piece 411 and improving the response efficiency.

[0050] See also Figure 4-Figure 7 As shown, a sealing ring 4113 is fixedly provided on the inner ring surface 21 of the sewage treatment tank 1 and surrounds the inner ring surface 21 and fits with the inner surface of the ring sheet 411 .

[0051] The setting of the sealing ring 4113 ensures that the ring piece 411 and the inner ring surface 21 are closed, effectively preventing water leakage therebetween, especially when the ring piece 411 moves up and down, maintaining the sealing performance, ensuring that the foam can only enter the net bag 4 through the water gap 531. The sealing ring 4113 also has a buffering effect on the gravity block 4112. When the gravity block 4112 is supported on the sealing ring 4113, the water gap 531 between the ring piece 411 and the extended edge 53 of the water storage tank body 5 is in a fully open state.

[0052] See also Figure 2 , Figure 3 and Figure 6-Figure 9 As shown, the linkage assembly 6 includes a pull rope 61 fixedly connected between the driving plate 311 and the gravity block 4112, and a guide wheel 62 for the pull rope 61 to pass around from above, and the guide wheel 62 is located above the gravity block 4112, and an axial connection part 621 for the guide wheel 62 to be rotatably connected is fixedly provided on the water storage tank body 5.

[0053] When the driving plate 311 begins to move outward under the action of the driving assembly 32, the pull rope 61 fixedly connected thereto loosens the ring piece 411, and the ring piece 411 moves downward under the action of the gravity block 4112 until the gravity block 4112 is supported on the sealing ring 4113, and the water gap 531 is opened to allow foam to flow into the net bag 4. When the driving plate 311 shifts back, the pull rope 61 is pulled, thereby pulling the ring piece 411 to move upward until the step 4111 on the ring piece 411 contacts the extended edge 53 of the water storage tank body 5. At this time, the water gap 531 is closed, and the water outlet 52 on the water storage tank body 5 is opened at the same time, allowing clean water to take away the foam attached to the net bag 4.

[0054] See also Figure 1-Figure 5 As shown, the sewage treatment tank 1 is provided with a liquid level sensor for detecting the height of the sewage liquid level therein.

[0055] The liquid level sensor is not shown in the figure. The liquid level sensor can continuously monitor the height of the sewage liquid level to ensure that the foam on the liquid surface can flow into the net bag 4 after the water gap 531 is opened.

[0056] The present invention causes the ring structure 31 of the wave-making mechanism 3 to expand as a whole, i.e., the driving plate 311 moves outward during the process of moving outward, thereby applying thrust to the water around the outside of the ring structure 31. Since the driving plate 311 moves perpendicular to the axial direction of the support 11, the water around the ring structure 31 is forcefully pushed outward, forming strong and uniform waves, accelerating the discharge of foam. Compared with the traditional method of rotating the driving plate 311, it ensures that the foam on the liquid surface is fully driven outward, thereby achieving effective management of the foam in the sewage treatment tank 1 and improving the comprehensiveness and efficiency of the foam treatment.

[0057] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A foam driving device for a sewage treatment tank, applied in a sewage treatment tank (1), comprising an annular water tank (2) arranged in a surrounding manner at the edge of the sewage treatment tank (1), and a wave making mechanism (3) arranged at the center of the sewage treatment tank (1), wherein a support (11) for mounting the wave making mechanism (3) is fixedly provided on the sewage treatment tank (1); It is characterized in that The wave-making mechanism (3) comprises a ring structure (31) having expansion and contraction effects, and a driving assembly (32) for driving the ring structure (31) to move, wherein the ring structure (31) is sleeved on a support (11), the lower half of the ring structure (31) is located below the liquid surface, the upper half of the ring structure (31) is located above the liquid surface, and the lower end of the ring structure (31) is sealedly connected to the support (11); A plurality of driving plates (311) are evenly distributed on the inner side of the ring structure (31) in a circumferential direction around the pillar (11); all the driving plates (311) are in transmission connection with the driving assembly (32); the inner side of the ring structure (31) is in contact with all the driving plates (311); the pillar (11) is arranged in a vertical state in the sewage treatment tank (1); each of the driving plates (311) can move in a direction perpendicular to the axis of the pillar (11); when the driving assembly (32) synchronously drives all the driving plates (311) to move outward, the ring structure (31) follows the movement of all the driving plates (311) and expands as a whole, so that the water surrounding the ring structure (31) in the sewage treatment tank (1) forms waves outward, thereby driving the foam to flow into the annular water tank (2).

2. A foam driving device for a sewage treatment pool according to claim 1, characterized in that: The sewage treatment tank (1) comprises an inner annular surface (21) and an outer annular surface (22), wherein the inner annular surface (21) and the outer annular surface (22) form the annular water trough (2), wherein the height of the inner annular surface (21) is lower than the height of the outer annular surface (22), and the edge of the outer annular surface (22) is provided with a water outlet (221) connected to the annular water trough (2), and when the sewage liquid level exceeds the upper end surface of the inner annular surface (21), the foam on the liquid surface can enter the annular water trough (2).

3. The foam driving device for a sewage treatment pool according to claim 2, characterized in that: A net bag (4) is provided in the annular water tank (2) and surrounds the water tank (2) and opens upward. The net bag (4) has an inner peripheral edge (41) and an outer peripheral edge (42). The outer peripheral edge (42) is fixedly connected to the outer annular surface (22). The inner peripheral edge (41) is fixedly provided with an annular sheet (411) that is in sliding contact with and tightly fitted to the inner annular surface (21). A water storage tank body (5) having a water replenishment port (51) and a water flow port (52) is provided around the top of the outer peripheral edge (42). When the annular sheet (411) moves upward until its upper end is above the liquid surface, foam is blocked by the annular sheet (411) and cannot enter the net bag (4). At this time, the water storage tank body (5) opens the water flow port (52) to allow clean water to flow into the net bag (4) and take away the attached foam. Conversely, when the annular sheet (411) moves downward until its upper end is submerged in water, foam can flow into the net bag (4). At this time, the water storage tank body (5) closes the water flow port (52).

4. The foam driving device for a sewage treatment pool according to claim 3, characterized in that: The bottom surface of the water storage tank body (5) is provided with the water flow port (52) surrounding the water storage tank body (5), and the water flow port (52) is provided with an opening and closing valve (521). The ring plate (411) is provided with a triggering member (522) cooperating with the opening and closing valve (521). When the ring plate (411) moves upward until its upper end is higher than the liquid surface, the triggering member (522) moves upward following the ring plate (411) so that the opening and closing valve (521) opens the water flow port (52). Conversely, when the ring plate (411) moves downward until its upper end is submerged in water, the triggering member (522) moves downward following the ring plate (411) so that the opening and closing valve (521) closes the water flow port (52) under its own action.

5. The foam driving device for a sewage treatment pool according to claim 4, characterized in that: A linkage assembly (6) is connected between each driving plate (311) and the ring piece (411). When the driving plate (311) remains in place, the ring piece (411) is in a docking state with the water storage tank body (5) under the action of the linkage assembly (6), so that the upper end of the ring piece (411) is higher than the liquid surface. Conversely, when the driving plate (311) moves outward, the ring piece (411) is in a disconnected state with the water storage tank body (5) under the action of the linkage assembly (6), so that the upper end of the ring piece (411) is submerged in water.

6. The foam driving device for a sewage treatment pool according to claim 4, characterized in that: The bottom surface of the water storage tank body (5) has an extension edge (53) extending downward, and a water gap (531) is formed between the extension edge (53) and the ring sheet (411) so that foam can flow into the net bag (4) after the upper end of the ring sheet (411) is immersed in water. The edge of the ring sheet (411) has a step (4111) that can contact the extension edge (53). When the step (4111) contacts the extension edge (53), the water gap (531) is closed, and at the same time, the water outlet (52) on the water storage tank body (5) is fully opened under the action of the trigger member (522) on the opening and closing valve (521).

7. The foam driving device for a sewage treatment pool according to claim 5, characterized in that: A gravity block (4112) is fixedly provided on the inner surface of the ring piece (411) for increasing its own weight.

8. The foam driving device for a sewage treatment pool according to claim 7, characterized in that: A sealing ring (4113) is fixedly provided on the inner annular surface (21) of the sewage treatment tank (1) and surrounds the inner annular surface (21) and is in contact with the inner surface of the annular sheet (411).

9. The foam driving device for a sewage treatment pool according to claim 7, characterized in that: The linkage assembly (6) comprises a pull rope (61) fixedly connected between the driving plate (311) and the gravity block (4112), and a guide wheel (62) for the pull rope (61) to pass around from above, wherein the guide wheel (62) is located above the gravity block (4112), and a shaft connection portion (621) for rotationally connecting the guide wheel (62) is fixedly provided on the water storage tank body (5).

10. The foam driving device for a sewage treatment pool according to claim 1, characterized in that: The sewage treatment tank (1) is provided with a liquid level sensor for detecting the height of the sewage liquid level therein.

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