Landfill leachate treatment defoaming device and use method thereof

Abstract

The invention relates to the technical field of high-concentration organic wastewater treatment, in particular to a landfill leachate treatment defoaming device and a using method thereof.The landfill leachate treatment defoaming device is installed in a leachate collecting box and comprises a silk screen, a water inlet pipe, a water outlet pipe and a water outlet pipe; the nozzles are installed below the silk screen and distributed in an array mode, the floating seats float on the liquid level of the percolate, the lower ends of the first elastic rods are connected to the upper surfaces of the floating seats in an inserted mode, the first elastic rods are arranged at intervals in the circumferential direction of the floating seats, and gaps are always reserved between the first elastic rods and the percolate; the defoaming balls are fixedly installed at the upper end of the first elastic rod, the first elastic rod is pressed by the defoaming balls to be bent downwards, the defoaming balls are located below the nozzles, and water flow with pressure emitted by the nozzles has impact force on the multiple defoaming balls so as to drive the first elastic rod to vibrate; and the spikes are distributed on the defoaming balls. Through multiple physical defoaming modes of the silk screen, the nozzle and the defoaming ball, the defoaming efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of high-concentration organic wastewater treatment, and in particular to a landfill leachate treatment and defoaming device and a method for using the same. Background Art

[0002] For the high-stability foam (containing surfactants, proteins, oils, etc.) generated during the thermal treatment unit of leachate wastewater and the biochemical treatment of wastewater, a multi-stage defoaming-defoaming-anti-blocking coordinated system is used to solve the problems of reduced effective volume of the reactor and loss of microorganisms caused by foam.

[0003] Existing defoaming technologies include chemical defoaming, which uses a polyether silicone oil emulsion spray to reduce the surface tension of the foam film. When used in the biochemical stage, defoamer residues in the MBR system can cause a decrease in nitrifying bacteria activity by over 40%. During leachate treatment, the wastewater thermal treatment unit (including the drying and evaporation stages) often produces foam due to the complex water composition. This requires the frequent addition of large amounts of defoamer, which not only increases production costs but can also negatively impact treatment effectiveness. Summary of the Invention

[0004] In order to solve the above technical problems, the present application provides a landfill leachate treatment and defoaming device and a method for using the same.

[0005] In a first aspect, the present application provides a landfill leachate treatment and defoaming device, which adopts the following technical solution: A landfill leachate treatment and defoaming device, installed in a leachate collection box, comprising: Silk screen; Nozzles are installed below the screen, with multiple nozzles distributed in an array. Floating seat, floating on the surface of leachate, The first elastic rod has a lower end inserted into the upper surface of the floating seat and is spaced apart along the circumference of the floating seat, and the first elastic rod always has a distance from the leachate; a defoaming ball fixedly mounted on the upper end of the first elastic rod, the first elastic rod being bent downward by the downward pressure of the defoaming ball, the defoaming ball being located below the nozzle, the nozzle emitting pressurized water flow having an impact force on the multiple defoaming balls, thereby driving the first elastic rod to vibrate; Spikes are distributed on the defoaming ball.

[0006] By adopting the above technical solution, the leachate passes through the wire mesh, nozzle and defoaming ball in sequence when dripping downwards, and finally falls into the leachate collection box. The wire mesh physically intercepts large bubbles, and the nozzle physically destroys the bubble structure through a pressurized jet. No chemical additives are required, and the float seat can adapt to changes in the liquid level. If the leachate level rises, the defoaming ball is closer to the nozzle, and the impact force of the nozzle jet gradually decreases with the range. However, the impact force of the jet is sufficient to drive the defoaming ball to vibrate with the first elastic rod, so that the defoaming ball performs irregular dynamic defoaming. The spikes can assist the defoaming ball to better puncture the foam. Through the various physical defoaming methods of the wire mesh, nozzle and defoaming ball, the production cost is reduced, the defoaming efficiency is improved, and it does not affect the biochemical activity, does not increase the burden of hazardous waste, and can operate stably for a long time.

[0007] Optionally, it also includes a pushing part and a driving assembly that drives the pushing part to move vertically up and down, the pushing part is used to cooperate with multiple first elastic rods, when the pushing part moves upward, the multiple first elastic rods gather together; when the pushing part moves downward, the multiple first elastic rods disperse.

[0008] By adopting the above technical solution, if a large amount of foam is generated, the driving component drives the pushing part to move up and down, so that the first elastic rods gather and disperse, which can increase the vibration amplitude of the first elastic rods and improve the defoaming range of the defoaming ball.

[0009] Optionally, the pushing portion includes a pushing block and a pull ring installed on the pushing block, the pull ring is sleeved and slidably installed on the first elastic rod, and the pushing plate is located between a plurality of the first elastic rods.

[0010] By adopting the above technical solution, the sliding design of the pull ring ensures that the push block can evenly apply force to the multiple first elastic rods when moving vertically.

[0011] Optionally, the push block is distributed with sharp parts.

[0012] By adopting the above technical solution, as the push block moves up and down, the sharp portion can also play a role in defoaming.

[0013] Optionally, the driving component includes: a pull rope, one end of which is connected to the push block; The reel is installed outside the leachate collection box, is used to be fixedly connected to the other end of the pull rope, and realizes the retraction and extension action of the pull rope through the reeling function.

[0014] By adopting the above technical solution, the reel is placed outside the box to prevent personnel from contacting the leachate; the pull rope structure is simple and reliable.

[0015] Optionally, it also includes a second elastic rod, the second elastic rod and the push block are connected by a pull ring, one end of the second elastic rod is inserted into the floating seat, the second elastic rods are arranged at intervals along the circumference of the floating seat, there is a second elastic rod between two adjacent first elastic rods, the other end of the second elastic rod is rotatably connected to a rotating rod, the rotation center of the rotating rod coincides with the central axis of the second elastic rod, the rotating rod includes opposite first and second wall surfaces, the two first elastic rods close to the same second elastic rod are in contact with the first avoidance surface and the second wall surface respectively, and the lengths of two adjacent second elastic rods are different.

[0016] By adopting the above technical solution, the second elastic rod can also achieve the effect of gathering and dispersing, and can gather and disperse synchronously with the first elastic rod. The second elastic rod supplements the vibration point, and the rotating rod transmits the vibration received by the first elastic rod to the adjacent first elastic rod, forming a linked defoaming network. In particular, when the foam is unevenly distributed, after part of the jet breaks the foam, the impact force on the defoaming balls is reduced. Other defoaming balls that are subjected to a greater impact force can drive the other first elastic rods to resonate through the cooperation of the first elastic rod and the rotating rod, thereby improving the defoaming effect.

[0017] Optionally, the length of the second elastic rod has two sizes, the rotating rod of the short second elastic rod is the first rotating rod, and the rotating rod of the long second elastic rod is the second rotating rod. When the first elastic rod and the second elastic rod are gathered together at the same time, multiple first rotating rods are spliced ​​and fixed by magnetic attraction, and multiple second rotating rods are spliced ​​and fixed by magnetic attraction.

[0018] By adopting the above technical solution, the first rotating rod is fixed by magnetism when gathered, and the second rotating rod is spliced ​​and fixed by magnetism, so that the first elastic rod and the second elastic rod can temporarily form a whole that can vibrate synchronously, which is equivalent to adding a defoaming method.

[0019] Optionally, a rotation mechanism for driving the floating seat to rotate is further included, and the rotation mechanism includes: A positioning rod is inserted into the floating seat, and the floating seat slides up and down on the positioning rod; A power source is installed outside the leachate collection box and is in transmission connection with the positioning rod to drive the positioning rod to rotate. The pull rope is connected to a conversion seat, and the push block and the conversion seat are rotatably connected, so that the push block rotates along with the rotation of the floating seat.

[0020] By adopting the above technical solution, if the first elastic rods are gathered together, the first elastic rods and the second elastic rods can temporarily form a whole that can vibrate synchronously, driving the floating seat to rotate, and the first elastic rods and the second elastic rods rotate regularly and form resonance, thereby defoaming the foam gathered above the floating seat. If the first elastic rods are dispersed, the floating seat is driven to rotate, and the first elastic rods and the second elastic rods rotate and vibrate irregularly, thereby defoaming the floating foam, thereby providing two material defoaming methods.

[0021] In a second aspect, the present application provides a method for treating and defoaming landfill leachate, which adopts the following technical solution: A method for using a defoaming device for treating landfill leachate is disclosed. Defoaming is performed according to the above-mentioned defoaming device for treating landfill leachate. A floating seat floats on the liquid surface, and a defoaming ball is pressed down by gravity, causing a first elastic rod to bend, and the defoaming ball is positioned below a nozzle. Leachate flows through a wire mesh, and foam is intercepted and broken by the wire mesh. The nozzle is opened, and a pressurized water flow is sprayed to impact the foam and the defoaming ball. The impact force of the water flow drives the defoaming ball to vibrate the first elastic rod, causing the spikes to repeatedly pierce the foam film. When the liquid level fluctuates, the floating seat rises and falls with the liquid level, driving the defoaming ball to float synchronously.

[0022] 1. The screen performs preliminary defoaming. The high-pressure water flow from the nozzle impacts the defoaming ball in the foam box, which in turn causes the first elastic rod to vibrate, allowing the spikes to physically puncture the foam. Multiple physical methods are combined to perform defoaming in a coordinated manner. No additives are used in the defoaming process, avoiding increased hazardous waste disposal costs and damage to the biochemical system. 2. The first elastic rod and the second elastic rod gather together and spread out to increase the defoaming amplitude of the defoaming ball. The second elastic rod is linked to the rotating rod to transmit vibration to form a defoaming resonance network. 3. The first elastic rod and the second elastic rod can rotate with the floating plate to defoam. According to the distribution of foam, regular or irregular rotation can be selected to perform targeted defoaming. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a cross-sectional view of the overall structure of an embodiment of the present application; Figure 2 This is a schematic diagram of the cooperation between the first elastic rod and the pushing portion in an embodiment of the present application; Figure 3 This is a schematic structural diagram of the embodiment of the present application showing the cooperation between the rotating rod and the first elastic rod; Figure 4 This is a schematic diagram of the overall structure of the leachate collection box according to an embodiment of the present application; Figure 5 3 is a schematic diagram of a state in which the first elastic rod and the second elastic rod of an embodiment of the present application are spread apart.

[0024] Explanation of the accompanying drawings: 10, leachate collection box; 11, partition; 20, wire mesh; 30, water pipe; 31, nozzle; 40, floating seat; 41, first elastic rod; 42, second elastic rod; 43, rotating rod; 431, first rotating rod; 432, second rotating rod; 50, defoaming ball; 51, spike; 60, pushing part; 61, pushing block; 62, pull ring; 63, connecting rope; 70, driving assembly; 71, pull rope; 72, linkage rod; 73, motor; 74, reel; 80, positioning rod; 81, reduction motor; 90, conversion seat; 91, seat body; 92, articulated ball. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1 -Attached Figure 5 This application is described in further detail.

[0026] In a first aspect, an embodiment of the present application discloses a landfill leachate treatment and defoaming device.

[0027] Reference Figure 1 A landfill leachate treatment and defoaming device is installed in a leachate collection box 10. Wire meshes 20 coated with a hydrophobic coating (such as a fluoropolymer coating) are sequentially arranged along the flow path of the leachate, and nozzles 31 are arranged in an array below the wire meshes 20. A partition 11 is installed in the leachate collection box 10. The partition 11 separates the liquid. The leachate in the space on one side of the partition 11 is extracted and enters the drying equipment for drying. The mother liquor flowing by gravity on the drying equipment falls into the space on the other side of the partition 11. Two water pipes 30 are passed through the leachate collection box 10. The two water pipes 30 are symmetrically distributed with respect to the partition 11, and the nozzles 31 are spaced apart along the length direction of the water pipes 30. Pressurized water is injected into the water pipes 30, and the water is ejected from the nozzles 31 at high pressure.

[0028] Reference Figure 1 and Figure 2 A landfill leachate treatment and defoaming device also includes a floating seat 40 (made of polypropylene) that floats on the leachate surface. The floating seat 40 is located within the space where the mother liquor is collected and is therefore located only within the space on one side of the partition 11. Eight first elastic rods 41 (2 cm in diameter) are equidistantly inserted into the upper surface of the floating seat 40. A defoaming ball 50 (10 cm in diameter) is fixed to the top of each first elastic rod 41. The defoaming ball 50 is hollow, like a ping-pong ball, and is relatively lightweight. Spikes 51 (3 cm in length) are evenly distributed on the surface of the defoaming ball 50. The first elastic rod 41 is bent approximately 30° by the weight of the defoaming ball 50, naturally hovering below the nozzle 31. When the nozzle 31 sprays high-pressure water, the high-pressure water penetrates the foam, and part of the water impacts the defoaming ball 50, driving the elastic rod to vibrate. The spikes 51 thus repeatedly pierce the foam film, increasing the overall defoaming range.

[0029] The landfill leachate treatment and defoaming device also includes a carbon steel positioning rod 80 installed in the leachate collection box 10. The positioning rod 80 is vertically inserted into the center of the floating seat 40. The positioning rod 80 has a rectangular cross-section. The floating seat 40 can slide up and down along the positioning rod 80 but cannot move circumferentially. The liquid level will not rise above the top of the positioning rod 80, so the floating seat 40 will not move upward away from the positioning rod 80.

[0030] Reference Figure 3 Second elastic rods 42 are provided between adjacent first elastic rods 41. A rotating rod 43 is connected to the top of each second elastic rod 42 via a bearing. The center of rotation of the rotating rod 43 coincides with the central axis of the second elastic rod 42. The rotating rod 43 has a rectangular cross-section and includes a first wall and a second wall facing each other. The first wall contacts the left first elastic rod 41, and the second wall contacts the right first elastic rod 41. The second elastic rods 42 contact the first elastic rods 41 via the rotating rod 43, creating a resonance effect between the multiple first elastic rods 41.

[0031] Reference Figure 1 and Figure 2 A landfill leachate treatment and defoaming device also includes a pushing part 60 and a driving assembly 70. The pushing part 60 includes a pushing block 61 and a pull ring 62 rotatably mounted on the pushing block 61. The pull ring 62 is slidably sleeved on the first elastic rod 41 and the second elastic rod 42, so that the pushing block 61 is located at the geometric center of the multiple elastic rods.

[0032] Reference Figure 1 and Figure 2 The driving component 70 adopts a corrosion-resistant pull rope 71, one end of which is connected to the push block 61, and the pull rope 71 passes around the water pipe 30. A guide seat is fixedly installed on the outer surface of the water pipe 30, and the pull rope 71 is embedded in the guide groove of the guide seat. The other end of the pull rope 71 extends outside the box, and an electric reel can be used to reel the pull rope 71. The reel realizes the vertical lifting and lowering of the push block 61 by retracting and releasing the pull rope 71. The push block 61 is distributed with sharp parts throughout, so that the push block 61 can defoam even if it encounters foam during movement. When the reel pulls the pull rope 71, the push block 61 rises and forces the pull ring 62 to gather the multiple first elastic rods 41 to the center; when the push block 61 descends, the first elastic rods 41 spread out and reset. After spreading, the first elastic rods 41 and the defoaming balls 50 are in a state of large-scale vibration, which improves the defoaming effect.

[0033] The floating seat 40 corresponds to a row of nozzles 31 on the water pipe 30 , and the driving assembly 70 and the pushing portion 60 are disposed corresponding to the floating seat 40 .

[0034] Reference Figure 4In the embodiment of the present application, multiple pull ropes 71 are reeled in simultaneously. The drive assembly 70 further includes a linkage rod 72 mounted outside the leachate collection tank 10 and a motor 73 for rotating the linkage rod 72. Reeling shafts 74 are intermittently disposed on the linkage rod 72. One end of the pull rope 71 is fixedly mounted on the reeling shaft 74. By activating the motor 73, multiple pull ropes 71 can be reeled in or released simultaneously.

[0035] Reference Figure 4 and Figure 5 A reduction motor 81 is installed outside the box, which drives the positioning rod 80 to rotate through a coupling. The cross-section of the positioning rod 80 near the floating seat 40 is a quadrilateral structure. The end of the positioning rod 80 near the reduction motor 81 can be a round rod to facilitate the sealing rotation between the positioning rod 80 and the leachate collection box 10.

[0036] Referring to Figure 5 , a conversion base 90 is positioned between the pull rope 71 and the push block 61. This base 90 comprises a base body 91 and an articulated ball 92, which is rotatably mounted within the base body 91. A connecting rope 63 is fixedly mounted on the push block 61 and is fixedly connected to the articulated ball 92. The base body 91 of the conversion base 90 is securely connected to the pull rope 71. To ensure that the pull rope 71 is free of kinks during the rotation of the floating seat 40, a power source drives the positioning rod 80 at 3 rpm, causing the floating seat 40 to rotate and de-foam.

[0037] Reference Figure 5 The lengths of two adjacent second elastic rods 42 are different, and the second elastic rods 42 include two sizes: short rods and long rods. The rotating rod 43 connected to the top of the short rod is the first rotating rod 431, and the rotating rod 43 connected to the long rod is the second rotating rod 432. The four first rotating rods 431 are at the same height, and the four second rotating rods 432 are at the same height. When the driving assembly 70 pulls the push block 61 to gather all the elastic rods, the four first rotating rods 431 are spliced ​​into a quadrilateral defoaming frame through the neodymium magnets at the ends, and the four second rotating rods 432 can also form a quadrilateral defoaming frame through magnetic attraction. The first elastic rods 41 and the second elastic rods 42 can temporarily form a whole, so that the first elastic rods 41 and the second elastic rods 42 can better rotate with the rotation of the floating seat 40, so that the entire device can maintain a stable state during the rotation to break through the foam.

[0038] The implementation principle of the landfill leachate treatment and defoaming device in the embodiment of the present application is as follows: The floating seat 40 is adapted to the liquid level so that the first elastic rod 41 bent downward by gravity naturally positions the defoaming ball 50 below the nozzle 31. After the leachate flows through the screen 20 and initially breaks up large bubbles, the nozzle 31 array sprays high-pressure water to impact the defoaming ball 50, driving the first elastic rod 41 to vibrate at high frequency, causing the spikes 51 on the surface of the defoaming ball 50 to repeatedly puncture the foam membrane to achieve physical defoaming. When the liquid level fluctuates, the floating seat 40 drives the defoaming ball 50 to float synchronously. The driving component 70 can also be used to control the elastic rod to gather or disperse to dynamically adjust the defoaming intensity and range. The rotation of the floating seat 40 further enhances the defoaming effect, thereby achieving continuous and efficient physical defoaming without the need for chemical additives and adaptive to liquid level changes.

[0039] In a second aspect, an embodiment of the present application discloses a method for treating and defoaming landfill leachate.

[0040] A method for using a defoaming device for treating landfill leachate is disclosed. Defoaming is performed according to the above-mentioned landfill leachate treatment defoaming device. A floating seat 40 floats on the liquid surface. A defoaming ball 50 is pressed downward by gravity, causing a first elastic rod 41 to bend, and the defoaming ball 50 is positioned below a nozzle 31. Leachate flows through a wire mesh 20, where foam is intercepted and broken. The nozzle 31 is opened to spray pressurized water to impact the foam and the defoaming ball 50. The impact force of the water drives the defoaming ball 50 to vibrate the first elastic rod 41, causing the spikes 51 to repeatedly pierce the foam film. When the liquid level fluctuates, the floating seat 40 rises and falls with the liquid level, driving the defoaming ball 50 to float synchronously.

[0041] In one embodiment, the pusher 60 and the drive assembly 70 cooperate to bring the first elastic rod 41 and the second elastic rod 42 together or apart, thereby increasing the vibration amplitude of the defoaming ball 50 and widening the defoaming range.

[0042] In one embodiment, the positioning rod 80 can be driven to rotate by the reduction motor 81 , so that the floating seat 40 rotates with the first elastic rod 41 and the second elastic rod 42 , thereby achieving 360° rotation defoaming.

[0043] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A landfill leachate treatment and defoaming device, installed in a leachate collection box (10), characterized in that: include: Wire Mesh (20); Nozzles (31) are installed below the screen (20) and are arranged in an array. The floating seat (40) floats on the surface of the leachate. The first elastic rod (41) has a lower end inserted into the upper surface of the floating seat (40) and is arranged at intervals along the circumference of the floating seat (40), and the first elastic rod (41) always has a distance from the leachate; The defoaming ball (50) is fixedly mounted on the upper end of the first elastic rod (41). The first elastic rod (41) is bent downward by the downward pressure of the defoaming ball (50). The defoaming ball (50) is located below the nozzle (31). The nozzle (31) emits a pressurized water flow to exert an impact force on the plurality of defoaming balls (50), thereby driving the first elastic rod (41) to vibrate. Spikes (51) are distributed on the defoaming ball (50).

2. The landfill leachate treatment and defoaming device according to claim 1, characterized in that: The invention also includes a pushing portion (60) and a driving assembly (70) for driving the pushing portion (60) to move vertically up and down. The pushing portion (60) is used to cooperate with the plurality of first elastic rods (41). When the pushing portion (60) moves upward, the plurality of first elastic rods (41) gather together; when the pushing portion (60) moves downward, the plurality of first elastic rods (41) spread out.

3. The landfill leachate treatment and defoaming device according to claim 2, characterized in that: The pushing portion (60) comprises a pushing block (61) and a pull ring (62) mounted on the pushing block (61); the pull ring (62) is sleeved and slidably mounted on the first elastic rod (41); and the pushing block (61) is located between a plurality of the first elastic rods (41).

4. The landfill leachate treatment and defoaming device according to claim 3, characterized in that: The push block (61) is distributed with sharp parts.

5. The landfill leachate treatment and defoaming device according to claim 3, characterized in that: The drive assembly (70) comprises: A pull rope (71), one end of which is connected to the push block (61); A reel is installed outside the leachate collection box (10) and is used to be fixedly connected to the other end of the pull rope (71), and realizes the retraction and extension action of the pull rope (71) through a reeling function.

6. The landfill leachate treatment and defoaming device according to claim 5, characterized in that: The invention also includes a second elastic rod (42), wherein the second elastic rod (42) and the push block (61) are connected via a pull ring (62), one end of the second elastic rod (42) is plugged into the floating seat (40), and the second elastic rods (42) are arranged at intervals along the circumference of the floating seat (40), and there is a second elastic rod (42) between two adjacent first elastic rods (41). The other end of the second elastic rod (42) is rotatably connected to a rotating rod (43), and the rotation center of the rotating rod (43) coincides with the central axis of the second elastic rod (42). The rotating rod (43) includes a first wall surface and a second wall surface opposite to each other, and the two first elastic rods (41) close to the same second elastic rod (42) are in contact with the first avoidance surface and the second wall surface respectively, and the lengths of the two adjacent second elastic rods (42) are different.

7. The landfill leachate treatment and defoaming device according to claim 6, characterized in that: The second elastic rod (42) has two length sizes. The rotating rod (43) of the short second elastic rod (42) is a first rotating rod (431), and the rotating rod (43) of the long second elastic rod (42) is a second rotating rod (432). When the first elastic rod (41) and the second elastic rod (42) are gathered together at the same time, multiple first rotating rods (431) are spliced ​​and fixed by magnetic attraction, and multiple second rotating rods (432) are spliced ​​and fixed by magnetic attraction.

8. The landfill leachate treatment and defoaming device according to claim 7, characterized in that: It also includes a rotation mechanism for driving the floating seat (40) to rotate, and the rotation mechanism includes: A positioning rod (80) is inserted into the floating seat (40), and the floating seat (40) slides up and down on the positioning rod (80); A power source is installed outside the leachate collection box (10) and is in transmission connection with the positioning rod (80) for driving the positioning rod (80) to rotate. The pull rope (71) is connected to a conversion seat (90), and the push block (61) and the conversion seat (90) are rotatably connected, so that the push block (61) rotates along with the rotation of the floating seat (40).

9. A method for treating and defoaming landfill leachate, characterized in that: According to a landfill leachate treatment and defoaming device according to any one of claims 1 to 8, defoaming is performed, the floating seat (40) floats on the liquid surface, the defoaming ball (50) is pressed down by gravity to bend the first elastic rod (41), and the defoaming ball (50) is positioned below the nozzle (31); the leachate flows through the wire mesh (20), the foam is intercepted and broken by the wire mesh (20), the nozzle (31) is opened, and a pressurized water flow is sprayed to impact the foam and the defoaming ball (50), and the impact force of the water flow drives the defoaming ball (50) to vibrate the first elastic rod (41), so that the spike (51) repeatedly punctures the foam film; when the liquid level fluctuates, the floating seat (40) rises and falls with the liquid level, driving the defoaming ball (50) to float synchronously.

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