A floating drum scraper flotation machine for sewage treatment

Abstract

The invention relates to the technical field of flotation machines, and discloses a floating scraper flotation machine for sewage treatment, comprising: a machine body, an inner wall of the machine body is provided with a collection pool, an inner wall of the machine body close to the collection pool is provided with an air flotation pool, and an inner wall of the machine body close to the air flotation pool is provided with a contact pool; the floating scraper flotation machine for sewage treatment also comprises: a transmission mechanism, an outer wall of the transmission mechanism is fixedly connected to the outer wall of the machine body, and a scraper mechanism, an outer surface of the scraper mechanism is fixedly connected to the outer surface of a fixed shaft, the flotation machine can prevent scum from adhering to the surface of a scraping component, so that the scum on the surface falls near the collection pool, and prevents bubbles attached to the surface of debris from bursting, causing the debris to be deposited in the flotation pool, affecting the progress of water treatment, and scraping and cleaning the inner wall of the flotation pool while scraping the scum, expanding the scraping range, and preventing the inner wall of the flotation pool from being attached to the scum for a long time, affecting the water treatment effect.

Description

Technical Field

[0001] The invention relates to the technical field of air flotation machines, and in particular to a buoy scraper air flotation machine for sewage treatment. Background Art

[0002] The flotation machine is a water treatment equipment that uses a dissolved air system to generate a large number of tiny bubbles in the water, causing the air to attach to the suspended particles in the form of highly dispersed tiny bubbles, resulting in a state where the density is less than that of water. The buoyancy principle is used to make the air float on the water surface, thereby achieving solid-liquid separation.

[0003] In the process of removing scum on the surface of the scum area, the current flotation machine usually uses a scraper plate to scrape the scum on the upper liquid surface of the scum area. The scum scraping area is small, and the scum on the wall of the flotation tank cannot be scraped off well. The scraper plate cannot be moved, resulting in the inability to adjust the scraping depth, which is not conducive to improving the scum removal efficiency. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention solves the technical problems by adopting the following technical solutions: the present invention provides a floating drum scraper flotation machine for sewage treatment, comprising: a machine body, the inner wall of the machine body is provided with a collection tank, the inner wall of the machine body is provided with an air flotation tank at one end close to the collection tank, and the inner wall of the machine body is provided with a contact tank at one end close to the air flotation tank;

[0005] The buoy scraper flotation machine for sewage treatment also includes:

[0006] A transmission mechanism, the outer wall of which is fixedly connected to the outer wall of the machine body;

[0007] The transmission mechanism includes a frame, which is symmetrically arranged on the outer wall of the machine body and fixedly connected to the outer wall of the machine body. The opposite sides of the frame are rotatably connected with a rotating shaft, and the two ends of the rotating shaft are fixedly connected with a toothed disc, and a chain is arranged on the outer surface of the toothed disc. The outer wall of the chain is evenly provided with a protective component, and the opposite side of the protective component is fixedly connected with a fixed shaft to keep the machine body clean. When the scraping mechanism and the protective component are lifted up together, the scum attached to the surface of the scraping mechanism drips downward, which easily causes the scum to splash outward. The protective component can shield the debris splashed by the scraping mechanism during the movement, thereby reducing the adhesion of debris to the surface of the machine body, causing cleaning difficulties, and easily causing the machine body to be contaminated and corroded in the long run;

[0008] The scraping mechanism has an outer surface fixedly connected to the outer surface of the fixed shaft.

[0009] An air dissolving pipe is fixedly connected to the inner wall of the contact pool, a stirring pool is symmetrically provided on the inner wall of the machine body near the contact pool, a stirrer is symmetrically arranged on the top of the machine body near the stirring pool, the bottom of the stirrer is fixedly connected to the top of the machine body, a liquid inlet pipe is symmetrically arranged on the outer wall of the machine body near the stirring pool, the outer wall of the liquid inlet pipe is fixedly connected to the outer wall of the machine body, a sewage pipe is symmetrically arranged on the side of the outer wall of the machine body near the liquid inlet pipe, and the outer wall of the sewage pipe is fixedly connected to the outer wall of the machine body.

[0010] Furthermore, the scraping mechanism includes a rubber block, the inner wall of the rubber block is fixedly connected to the outer wall of the fixed shaft, a guide rod is symmetrically arranged at one end of the outer surface of the fixed shaft close to the rubber block, a spring is fixedly connected to the bottom of the guide rod, a sleeve is fixedly connected to the bottom of the spring, a scraping assembly is fixedly connected to the bottom of the sleeve, cleaning assemblies are arranged at both ends of the scraping assembly, an extension assembly is fixedly connected to the outer wall of the cleaning assembly, there are two rubber blocks, the outer surface of the guide rod is fixedly connected to the inner wall of the rubber block, and the top of the guide rod is fixedly connected to the outer surface of the fixed shaft The inner wall of the sleeve is sleeved with the outer surface of the guide rod, and the outer wall of the cleaning component is slidably connected with the outer surface of the scraping component to clean the surface of the scraping component, while driving the extension component to complete self-cleaning, so as to prevent scum from adhering to the surface of the scraping component, resulting in incomplete scraping, and causing the scum on the surface to fall near the collection pool, causing the bubbles attached to the surface of the debris to burst, causing the debris to be deposited in the flotation pool, affecting the progress of water treatment, and scraping and cleaning the inner wall of the flotation pool while scraping the scum, expanding the scraping range, and preventing the inner wall of the flotation pool from being attached to the scum for a long time, affecting the water treatment effect.

[0011] Furthermore, the protection component includes a mounting block, the outer surface of the mounting block is fixedly connected to an end of the chain away from the frame, the bottom of the mounting block is fixedly connected to a connecting rod, the bottom of the connecting rod is rotatably connected to a baffle, the outer wall of the baffle is rotatably connected to a movable plate, and a special-shaped ring is arranged above the movable plate, the inner wall of the special-shaped ring is rotatably connected to a side of the fixed shaft close to the mounting block, so as to block the scum cleaned up by the scraping mechanism and make it slide into the flotation tank to prevent it from falling onto the surface of the chain and the machine body, thereby protecting the machine body, extending the time for cleaning and maintenance, and reducing the damage to the machine body surface caused by the attachment of scum.

[0012] Furthermore, the scraping assembly includes a scraping plate, the top of the scraping plate is fixedly connected to the bottom of the sleeve, the inner wall of the scraping plate is provided with a cavity, a limiting rod is arranged inside the cavity, the outer surface of the limiting rod is slidably connected to the inner wall of the cavity, short rods are evenly arranged at the bottom of the limiting rod, the top of the short rod is fixedly connected to the bottom of the limiting rod, and the bottom of the short rod is fixedly connected with an extension plate, so that the scraping range can be automatically adjusted to avoid incomplete scraping causing secondary dissolution of debris and accumulation at the bottom of the flotation tank, resulting in incomplete sewage treatment, and the scum on the surface of the scraping plate is vibrated to separate it from the surface of the scraping plate, and the auxiliary cleaning assembly cleans the scraping plate.

[0013] Furthermore, the cleaning assembly includes a slider, two of which are provided with a fixing rod fixedly connected to the top of the slider, a groove being provided on the inner wall of the slider, a side of the outer wall of the slider close to the scraper plate being slidably connected to the outer wall of the scraper plate, a slideway being symmetrically provided on the outer surface of the slider, a scraper rod being slidably connected to the outer surface of the slider close to the slideway, an opposite side of the scraper rod being in contact with the outer surface of the scraper plate, and a counterweight block being rotatably connected to one end of the outer wall of the scraper rod close to the slider, thereby completing self-cleaning of the scraper plate. At the same time, due to the impact of the scraper plate, a small amount of scum remaining on the scraper rod is also shaken off, so that the scraper plate is kept clean, the adhesion of scum is reduced, and the scum is prevented from adhering for a long time and being difficult to remove, thereby affecting subsequent cleaning and maintenance.

[0014] Furthermore, the extension assembly includes a fixing plate, the bottom of the fixing plate is fixedly connected to the top of the fixing rod, the fixing plate is rotatably connected to a scraper at one end away from the sliding block, a square hole is opened on the outer wall of the scraper away from the end of the fixing plate, an elastic frame is provided on the outer wall of the scraper, the outer wall of the elastic frame is snapped with the inner wall of the square hole, a fixing frame is fixedly connected to the outer wall of the elastic frame close to one end of the sliding block, a support rod is symmetrically provided at one end of the fixing frame away from the elastic frame, the outer wall of the fixing frame is fixedly connected to the outer wall of the support rod, the end of the support rod away from the fixing frame is fixedly connected to the outer wall of the scraper rod, the outer wall of the support rod is socketed with the inner wall of the counterweight block, so that the scraper plate can also take into account the inner wall of the flotation tank when working, thereby expanding the scraping range, making the slag cleaning more thorough, and reducing the adhesion of slag on the surface of the scraper and the fixing plate.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. In the current flotation machine, during the process of removing scum on the surface of the scum area, a scraper plate is usually used to scrape the scum on the upper liquid surface of the scum area, and the scraping area of ​​the scum is relatively small. The present invention provides a scraping mechanism to prevent the scum from adhering to the surface of the scraping component, so that the scum on the surface falls near the collection pool, and prevents the bubbles attached to the surface of the debris from bursting, causing the debris to be deposited in the flotation pool and affecting the progress of water treatment. While scraping the scum, the inner wall of the flotation pool is scraped and cleaned, expanding the scraping range, and preventing the inner wall of the flotation pool from being attached to the scum for a long time, which affects the water treatment effect.

[0017] 2. When scraping, the scraping depth cannot be adjusted because the scraping plate cannot be moved, and the scum close to the liquid surface cannot be cleaned well. The present invention sets a scraping component to keep cleaning the scum on the water surface, so that the scraping range can be automatically adjusted to avoid incomplete scraping causing secondary dissolution of debris and accumulation at the bottom of the flotation tank, resulting in incomplete sewage treatment. The scum on the surface of the scraping plate is oscillated to separate it from the scraping plate surface, and the auxiliary cleaning component cleans the scraping plate.

[0018] 3. When the scraper plate is working, there is usually a certain gap between it and the inner wall of the flotation tank, causing the scum to flow back to the flotation tank from the gap, resulting in incomplete scraping and also causing the scum to sink into the water again, affecting the sewage treatment effect. The present invention provides an extension component so that the scraper plate can also clean the inner wall of the flotation tank when working, so that the scum cleaning is more thorough, the scraping range is expanded, and the attachment of scum is reduced by self-cleaning, thereby maintaining the equipment use environment.

[0019] 4. A large amount of scum will adhere to the surface of the scraper plate when it is working. If it is not cleaned in time, it will easily damage the scraper plate and affect the quality of sewage. The present invention provides a cleaning component to assist the scraper plate and the extension component to keep clean, reduce the adhesion of scum, and avoid the scum adhering for a long time, which makes it difficult to remove and affects the subsequent cleaning and maintenance.

[0020] 5. When the scraper plate leaves the flotation tank and performs self-cleaning, it is easy to cause scum to splash and adhere to the top of the machine body or the surface of the chain. The present invention sets a protective component to block the scum cleaned by the scraper mechanism and slide it into the flotation tank to prevent it from falling on the surface of the chain and the machine body, thereby protecting the machine body, extending the cleaning and maintenance time, and reducing the damage caused by the scum adhesion to the machine body surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 is a cross-sectional view of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the transmission mechanism of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the scraping mechanism of the present invention;

[0025] Figure 5 is a cross-sectional view of the scraping assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the protection component of the present invention;

[0027] Figure 7 is a cross-sectional view of the cleaning assembly of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the extension component of the present invention.

[0029] In the figure: 1, machine body; 2, collecting tank; 3, air flotation tank; 4, transmission mechanism; 401, frame; 402, toothed disc; 403, chain; 404, rotating shaft; 405, protection component; 4051, mounting block; 4052, connecting rod; 4053, baffle; 4054, movable plate; 4055, special-shaped ring; 406, fixed shaft; 5, scraping mechanism; 501, rubber block; 502, scraping component; 5021, scraping plate; 5022, cavity; 5023, limit rod; 5024, short rod; 5025, extension Long board; 503, cleaning assembly; 5031, slider; 5032, fixed rod; 5033, slide; 5034, scraper rod; 5035, counterweight; 5036, groove; 504, extension assembly; 5041, fixed plate; 5042, scraper; 5043, square hole; 5044, elastic frame; 5045, fixed frame; 5046, support rod; 505, guide rod; 506, spring; 507, sleeve; 6, contact tank; 7, dissolved gas tube; 8, stirring tank; 9, mixer; 10, liquid inlet pipe; 11, sewage pipe. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0031] Example 1, using Figure 1-Figure 4 A floating drum scraper flotation machine for sewage treatment according to one embodiment of the present invention is described as follows.

[0032] like Figure 1-Figure 4As shown, a floating drum scraper flotation machine for sewage treatment according to the present invention comprises: a machine body 1, a collecting pool 2 is provided on the inner wall of the machine body 1, an air flotation pool 3 is provided on one end of the inner wall of the machine body 1 close to the collecting pool 2, and a contact pool 6 is provided on one end of the inner wall of the machine body 1 close to the air flotation pool 3;

[0033] The buoy scraper flotation machine for sewage treatment also includes:

[0034] A transmission mechanism 4, the outer wall of the transmission mechanism 4 is fixedly connected to the outer wall of the body 1;

[0035] The scraping mechanism 5 has an outer surface fixedly connected to the outer surface of the fixed shaft 406 .

[0036] An air dissolving pipe 7 is fixedly connected to the inner wall of the contact pool 6, a stirring pool 8 is symmetrically provided on the inner wall of the body 1 near the contact pool 6, a stirrer 9 is symmetrically arranged on the top of the body 1 near the stirring pool 8, and the bottom of the stirrer 9 is fixedly connected to the top of the body 1, a liquid inlet pipe 10 is symmetrically arranged on the outer wall of the body 1 near the stirring pool 8, and the outer wall of the liquid inlet pipe 10 is fixedly connected to the outer wall of the body 1, and a sewage pipe 11 is symmetrically arranged on the outer wall of the body 1 near the liquid inlet pipe 10, and the outer wall of the sewage pipe 11 is fixedly connected to the outer wall of the body 1.

[0037] During operation, sewage enters the stirring tank 8 from the sewage pipe 11, and at the same time, the liquid inlet pipe 10 injects the well-proportioned flocculant and sewage into the stirring tank 8 at the same time, and is mixed by the stirrer 9 in the stirring tank 8. Then, the mixed sewage enters the contact tank 6 from the bottom of the stirring tank 8, and the air dissolving pipe 7 makes the debris in the sewage attach a large number of microbubbles, so that the debris floats on the surface of the sewage, and enters the flotation tank 3 along the tank wall, floats on the top of the flotation tank 3, and then the transmission mechanism 4 is turned on to drive the scraping mechanism 5 to move, so that the scraping mechanism 5 cleans the scum in the flotation tank 3 near the collection tank 2 and concentrates it in the collection tank 2.

[0038] The transmission mechanism 4 includes a frame 401, which is symmetrically arranged on the outer wall of the body 1 and fixedly connected to the outer wall of the body 1. A rotating shaft 404 is rotatably connected to the opposite side of the frame 401, and both ends of the rotating shaft 404 are fixedly connected to a gear plate 402. A chain 403 is arranged on the outer surface of the gear plate 402, and a protective component 405 is evenly arranged on the outer wall of the chain 403. A fixed shaft 406 is fixedly connected to the opposite side of the protective component 405.

[0039] During operation, the frame 401 drives the rotating shaft 404 and the toothed disc 402 to rotate, so that the protective component 405 on the chain 403 moves with the scraping mechanism 5. When the scraping mechanism 5 scrapes the scum downward, the bottom of the protective mechanism contacts the top of the machine body 1, and the scum remaining on the top of the machine body 1 is cleaned and scraped to keep the machine body 1 clean. When the scraping mechanism 5 and the protective component 405 are lifted upward together, the scum attached to the surface of the scraping mechanism 5 drips downward, which can easily cause the scum to splash outward. The protective component 405 can block the debris splashed by the scraping mechanism 5 during the movement, reduce the adhesion of debris on the surface of the machine body 1, and make cleaning difficult. In the long run, it is easy to cause the machine body 1 to be contaminated and corroded.

[0040] The scraping mechanism 5 includes a rubber block 501, the inner wall of the rubber block 501 is fixedly connected to the outer wall of the fixed shaft 406, a guide rod 505 is symmetrically arranged at one end of the outer surface of the fixed shaft 406 close to the rubber block 501, a spring 506 is fixedly connected to the bottom of the guide rod 505, a sleeve 507 is fixedly connected to the bottom of the spring 506, a scraping component 502 is fixedly connected to the bottom of the sleeve 507, cleaning components 503 are arranged at both ends of the scraping component 502, an extension component 504 is fixedly connected to the outer wall of the cleaning component 503, there are two rubber blocks 501, the outer surface of the guide rod 505 is fixedly connected to the inner wall of the rubber block 501, the top of the guide rod 505 is fixedly connected to the outer surface of the fixed shaft 406, the inner wall of the sleeve 507 is sleeved with the outer surface of the guide rod 505, and the outer wall of the cleaning component 503 is slidably connected to the outer surface of the scraping component 502.

[0041] The transmission mechanism 4 is turned on, driving the fixed shaft 406 to move with the chain 403. Two groups of scraping components 502 are arranged on the chain 403. While one group is scraping downward, the other group is lifted and self-cleaning. The two groups of scraping components 502 are used alternately to improve the scraping efficiency. When scraping, the scraping component 502 is located below the fixed shaft 406. The spring 506 is in a stretched state at this time. The scraping component 502 floats vertically on the water surface by its own buoyancy and the stretching force of the spring 506. The extension component 504 fills the gap between the scraping component 502 and the inner wall of the flotation tank 3 to expand the scraping range. The scraping component 502 cleans the scum along the moving direction of the chain 403 into the collection tank 2. When the lower part leaves the water surface and is lifted upward, the spring 506 rebounds, causing the scraping component 502 to generate an impact force to move toward the fixed shaft 406, so that the scum attached to the surface of the scraping component 502 is shaken off, and at the same time, the cleaning component 503 is driven to move downward to clean the surface of the scraping component 502, and at the same time, the extension component 504 is driven to complete self-cleaning, so as to prevent the scum from adhering to the surface of the scraping component 502, resulting in incomplete scraping, and the scum on the surface falls to the vicinity of the collecting tank 2, causing the bubbles attached to the surface of the debris to burst, causing the debris to be deposited in the flotation tank 3, affecting the progress of water treatment, and scraping and cleaning the inner wall of the flotation tank 3 while scraping the scum, expanding the scraping range, and preventing the inner wall of the flotation tank 3 from being attached to the scum for a long time, affecting the water treatment effect.

[0042] Embodiment 2, use Figure 1-Figure 8 A floating drum scraper flotation machine for sewage treatment according to one embodiment of the present invention is described as follows.

[0043] like Figure 1-Figure 8 As shown, a buoy scraper flotation machine for sewage treatment described in the present invention is based on the first embodiment, and the protective component 405 includes a mounting block 4051, the outer surface of the mounting block 4051 is fixedly connected to the end of the chain 403 away from the frame 401, the bottom of the mounting block 4051 is fixedly connected to a connecting rod 4052, the bottom of the connecting rod 4052 is rotatably connected to a baffle 4053, the outer wall of the baffle 4053 is rotatably connected to a movable plate 4054, and a special-shaped ring 4055 is arranged above the movable plate 4054, and the inner wall of the special-shaped ring 4055 is rotatably connected to a side of the fixed shaft 406 close to the mounting block 4051.

[0044] The movable plate 4054 is made of elastic material, and both the baffle plate 4053 and the movable plate 4054 are made of corrosion-resistant material. When the scraping mechanism 5 is scraping downward, the baffle plate 4053 contacts the top of the machine body 1 to clean the scum on the surface of the machine body 1. The movable plate 4054 is blocked between the scraping mechanism 5 and the machine body 1 to reduce the scum splashed by the scraping mechanism 5 when scraping and adhering to the surface of the machine body 1. At the same time, the special-shaped ring 4055 rotates, and its paid part contacts the movable plate 4054 intermittently, so that the movable plate 4054 keeps shaking, reducing the scum on the movable plate 4054. The movable plate 4054 stays on the surface of the scraper mechanism 5. When the scraper mechanism 5 is lifted for self-cleaning, the baffle 4053 is above the chain 403. At the same time, the baffle 4053 rotates along the connecting rod 4052 to tilt toward one end of the scraper mechanism 5. Driven by the special-shaped ring 4055, the movable plate 4054 and the baffle 4053 shake to block the scum cleaned by the scraper mechanism 5 and slide it into the flotation tank 3 to prevent it from falling on the surface of the chain 403 and the body 1, thereby protecting the body 1, extending the cleaning and maintenance time, and reducing the damage caused by the scum adhesion to the surface of the body 1.

[0045] The scraping assembly 502 includes a scraping plate 5021, the top of which is fixedly connected to the bottom of the sleeve 507, the inner wall of the scraping plate 5021 is provided with a cavity 5022, a limiting rod 5023 is arranged inside the cavity 5022, the outer surface of the limiting rod 5023 is slidably connected to the inner wall of the cavity 5022, short rods 5024 are evenly arranged at the bottom of the limiting rod 5023, the top of the short rod 5024 is fixedly connected to the bottom of the limiting rod 5023, and the bottom of the short rod 5024 is fixedly connected to an extension plate 5025.

[0046] When the chain 403 drives the scraper plate 5021 to contact the scum, the scraper plate 5021 stretches the spring 506 downward by its own weight, and the limit rod 5023 in the cavity 5022 moves downward due to gravity. After the extension plate 5025 contacts the water, the limit rod 5023 and the short rod 5024 move upward according to the buoyancy. The limit rod 5023 and the short rod 5024 are made of lighter materials. When the scraper plate 5021 moves, the extension plate 5025 is driven to move, so that the scum on the water surface is kept cleaned, so that the scraping range can be automatically adjusted to avoid Incomplete scraping causes the debris to dissolve again and accumulate at the bottom of the flotation tank 3, resulting in incomplete sewage treatment. When the scraper plate 5021 is lifted upward, since the scraper plate 5021 is located above the fixed shaft 406, under the action of its own gravity and the tensile force of the spring 506, the scraper plate 5021 generates an impact force to move downward, causing the scraper plate 5021 to hit the rubber block 501, vibrating the scum on the surface of the scraper plate 5021 to separate from the surface of the scraper plate 5021, and the auxiliary cleaning component 503 cleans the scraper plate 5021.

[0047] The cleaning assembly 503 includes a slider 5031, and there are two sliders 5031. A fixing rod 5032 is fixedly connected to the top of the slider 5031. A groove 5036 is provided on the inner wall of the slider 5031. The outer wall of the slider 5031 is slidably connected to the outer wall of the scraper plate 5021 on one side close to the scraper plate 5021. The outer surface of the slider 5031 is symmetrically provided with slideways 5033. A scraper rod 5034 is slidably connected to the outer surface of the slider 5031 on one side close to the slideway 5033. The opposite side of the scraper rod 5034 contacts the outer surface of the scraper plate 5021. A counterweight block 5035 is rotatably connected to the outer wall of the scraper plate 5021 close to the slider 5031. Since the scraper plate 5021 is wide at the top and narrow at the bottom, the slider 5031 also matches the shape of the scraper plate 5021.

[0048] The groove 5036 inside the slider 5031 is filled with half of the clean sand and sealed. When the scraper plate 5021 is facing downward, the slider 5031 is driven to move downward, so that the scraper rod 5034 is located at the bottom of the scraper plate 5021. The scraper rod 5034 is in a triangular shape, and the surface in contact with the scraper plate 5021 is narrow. When the scraper plate 5021 is facing upward, the sand in the slider 5031 is concentrated at the bottom of the slider 5031, so that the slider 5031 moves downward. At the same time, the counterweight block 5035 is affected by gravity and rotates downward along the support rod 5046, and then cooperates with the downward impact of the scraper plate 5021. The impact force causes the slider 5031 to drive the scraper rod 5034 to move downward along the scraper plate 5021. At the same time, due to the action of the counterweight block 5035, the scraper rod 5034 moves downward on the slider 5031, so that the scraper rod 5034 cleans the scum along the surface of the scraper plate 5021 into the flotation tank 3, completing the self-cleaning of the scraper plate 5021. At the same time, due to the impact of the scraper plate 5021, a small amount of scum remaining on the scraper rod 5034 is also shaken off, so that the scraper plate 5021 is kept clean, the attachment of scum is reduced, and the scum is prevented from being difficult to remove due to long-term attachment, which affects subsequent cleaning and maintenance.

[0049] The extension component 504 includes a fixing plate 5041, the bottom of which is fixedly connected to the top of the fixing rod 5032, the end of the fixing plate 5041 away from the slider 5031 is rotatably connected to the scraper 5042, the outer wall of the scraper 5042 away from the fixed plate 5041 is provided with a square hole 5043, the outer wall of the scraper 5042 is provided with an elastic frame 5044, the outer wall of the elastic frame 5044 is snap-fitted with the inner wall of the square hole 5043, the outer wall of the elastic frame 5044 close to the slider 5031 is fixedly connected to a fixing frame 5045, the end of the fixing frame 5045 away from the elastic frame 5044 is symmetrically provided with support rods 5046, the outer wall of the fixing frame 5045 is fixedly connected to the outer wall of the support rod 5046, the end of the support rod 5046 away from the fixing frame 5045 is fixedly connected to the outer wall of the scraper rod 5034, and the outer wall of the support rod 5046 is sleeved with the inner wall of the counterweight 5035.

[0050] When the scraper plate 5021 enters the flotation tank 3, the built-in power source of the fixed frame 5045 retracts the elastic frame 5044 inward, driving the scraper plate 5042 to approach the fixed plate 5041. After the scraper plate 5021 completely enters the flotation tank 3, the elastic frame 5044 is reset, so that the scraper plate 5042 is closely attached to the inner wall of the flotation tank 3 by its own elasticity. When the scraper plate 5021 is working, the scraper plate 5042 is closely attached to the inner wall of the flotation tank 3 and works together with the scraper plate 5021, so that the scraper plate 5021 can also work at the same time. The inner wall of the flotation tank 3 is taken care of, the scraping range is expanded, and the scum cleaning is made more thorough. The inner wall of the flotation tank 3 is cleaned, and when the scraper rod 5034 cleans the scraper plate 5021, the fixed frame 5045 is driven to move with the scraper rod 5034, so that the elastic frame 5044 moves along the square hole 5043. The elastic frame 5044 is arranged around the scraper plate 5042. The scum is scraped off during the movement of the elastic frame 5044, so that the attachment of scum to the surfaces of the scraper plate 5042 and the fixed plate 5041 can be reduced.

[0051] The specific workflow is as follows:

[0052] During operation, sewage enters the stirring tank 8 from the sewage pipe 11, and at the same time, the liquid inlet pipe 10 injects the well-proportioned flocculant and sewage into the stirring tank 8 at the same time, and is mixed by the stirrer 9 in the stirring tank 8. Then, the mixed sewage enters the contact tank 6 from the bottom of the stirring tank 8. The air dissolving pipe 7 makes the debris in the sewage attach a large number of microbubbles, so that the debris floats on the surface of the sewage and enters the flotation tank 3 along the tank wall, and floats on the top of the flotation tank 3. The transmission mechanism 4 is turned on, driving the fixed shaft 406 to move with the chain 403. Two groups of scraping components 502 are arranged on the chain 403. While one group scrapes downward, the other group is lifted and self-cleaned. The two groups of scraping components 502 are used alternately to improve the scraping efficiency. When scraping, the scraping component 502 is located below the fixed shaft 406, and the spring 506 is in a stretched state at this time. The scraping assembly 502 floats vertically on the water surface by its own buoyancy and the tensile force of the spring 506. The extension assembly 504 fills the gap between the scraping assembly 502 and the inner wall of the flotation tank 3 to expand the scraping range. The scraping assembly 502 cleans the scum along the moving direction of the chain 403 into the collection tank 2. When the scraping assembly 502 is lifted up from the water surface driven by the chain 403, the spring 506 rebounds, causing the scraping assembly 502 to generate an impact force moving toward the fixed shaft 406, so that the scum adhered to the surface of the scraping assembly 502 is shaken off, and at the same time, the cleaning assembly 503 is driven to move downward to clean the surface of the scraping assembly 502. At the same time, the extension assembly 504 is driven to complete self-cleaning to prevent the scum from adhering to the surface of the scraping assembly 502, resulting in incomplete scraping, so that the scum on the surface falls near the collection tank 2.

[0053] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A floating drum scraper flotation machine for sewage treatment, specifically comprising: The machine body (1) is characterized in that: a collecting pool (2) is provided on the inner wall of the machine body (1), an air flotation pool (3) is provided on one end of the inner wall of the machine body (1) close to the collecting pool (2), and a contact pool (6) is provided on one end of the inner wall of the machine body (1) close to the air flotation pool (3); The buoy scraper flotation machine for sewage treatment also includes: A transmission mechanism (4), wherein an outer wall of the transmission mechanism (4) is fixedly connected to an outer wall of the machine body (1); The transmission mechanism (4) comprises a frame (401), the frame (401) is symmetrically arranged on the outer wall of the machine body (1) and fixedly connected to the outer wall of the machine body (1), the opposite side of the frame (401) is rotatably connected to a rotating shaft (404), both ends of the rotating shaft (404) are fixedly connected to a toothed disc (402), the outer surface of the toothed disc (402) is provided with a chain (403), the outer wall of the chain (403) is evenly provided with protective components (405), and the opposite side of the protective component (405) is fixedly connected to a fixed shaft (406); A scraping mechanism (5), wherein the outer surface of the scraping mechanism (5) is fixedly connected to the outer surface of the fixed shaft (406); The scraping mechanism (5) comprises a rubber block (501), the inner wall of the rubber block (501) is fixedly connected to the outer wall of the fixed shaft (406), a guide rod (505) is symmetrically arranged at one end of the outer surface of the fixed shaft (406) close to the rubber block (501), a spring (506) is fixedly connected to the bottom of the guide rod (505), a sleeve (507) is fixedly connected to the bottom of the spring (506), a scraping assembly (502) is fixedly connected to the bottom of the sleeve (507), cleaning assemblies (503) are arranged at both ends of the scraping assembly (502), and an extension assembly (504) is fixedly connected to the outer wall of the cleaning assembly (503); The scraping assembly (502) comprises a scraping plate (5021), the top of the scraping plate (5021) is fixedly connected to the bottom of the sleeve (507), the inner wall of the scraping plate (5021) is provided with a cavity (5022), a limiting rod (5023) is arranged inside the cavity (5022), the outer surface of the limiting rod (5023) is slidably connected to the inner wall of the cavity (5022), short rods (5024) are evenly arranged at the bottom of the limiting rod (5023), the top of the short rod (5024) is fixedly connected to the bottom of the limiting rod (5023), and the bottom of the short rod (5024) is fixedly connected to an extension plate (5025).

2. The buoy scraper flotation machine for sewage treatment according to claim 1 is characterized in that: The inner wall of the contact pool (6) is fixedly connected to a dissolving gas pipe (7); the inner wall of the machine body (1) is symmetrically provided with a stirring pool (8) at one end close to the contact pool (6); a stirrer (9) is symmetrically arranged at the top of the machine body (1) close to the stirring pool (8); the bottom of the stirrer (9) is fixedly connected to the top of the machine body (1); a liquid inlet pipe (10) is symmetrically arranged at one end of the outer wall of the machine body (1) close to the stirring pool (8); the outer wall of the liquid inlet pipe (10) is fixedly connected to the outer wall of the machine body (1); a sewage pipe (11) is symmetrically arranged on one side of the outer wall of the machine body (1) close to the liquid inlet pipe (10); the outer wall of the sewage pipe (11) is fixedly connected to the outer wall of the machine body (1).

3. The buoy scraper flotation machine for sewage treatment according to claim 1 is characterized in that: The number of the rubber blocks (501) is two, the outer surface of the guide rod (505) is fixedly connected to the inner wall of the rubber block (501), the top of the guide rod (505) is fixedly connected to the outer surface of the fixed shaft (406), the inner wall of the sleeve (507) is sleeved with the outer surface of the guide rod (505), and the outer wall of the cleaning component (503) is slidably connected to the outer surface of the scraping component (502).

4. The buoy scraper flotation machine for sewage treatment according to claim 1, characterized in that: The protection component (405) comprises a mounting block (4051), the outer surface of which is fixedly connected to one end of the chain (403) away from the frame (401), the bottom of which is fixedly connected to a connecting rod (4052), the bottom of which is rotatably connected to a baffle (4053), the outer wall of which is rotatably connected to a movable plate (4054), a special-shaped ring (4055) being arranged above the movable plate (4054), the inner wall of which is rotatably connected to a side of the fixed shaft (406) close to the mounting block (4051).

5. The buoy scraper flotation machine for sewage treatment according to claim 3 is characterized by: The cleaning assembly (503) comprises a slider (5031), wherein the number of the sliders (5031) is two, a fixing rod (5032) is fixedly connected to the top of the slider (5031), a groove (5036) is provided on the inner wall of the slider (5031), a side of the outer wall of the slider (5031) close to the scraping plate (5021) is slidably connected to the outer wall of the scraping plate (5021), a slideway (5033) is symmetrically arranged on the outer surface of the slider (5031), a scraping rod (5034) is slidably connected to the side of the outer surface of the slider (5031) close to the slideway (5033), the opposite side of the scraping rod (5034) is in contact with the outer surface of the scraping plate (5021), and a counterweight (5035) is rotatably connected to the end of the outer wall of the scraping rod (5034) close to the slider (5031).

6. The buoy scraper flotation machine for sewage treatment according to claim 5, characterized in that: The extension component (504) comprises a fixing plate (5041), the bottom of which is fixedly connected to the top of the fixing rod (5032), the end of which is away from the sliding block (5031) is rotatably connected to a scraper (5042), the outer wall of which is away from the end of the scraper (5042) which is away from the fixing plate (5041) is provided with a square hole (5043), the outer wall of the scraper (5042) is provided with an elastic frame (5044), and the outer wall of the elastic frame (5044) is locked with the inner wall of the square hole (5043). The outer wall of the elastic frame (5044) at one end close to the slider (5031) is fixedly connected to a fixing frame (5045), and a support rod (5046) is symmetrically arranged at one end of the fixing frame (5045) away from the elastic frame (5044). The outer wall of the fixing frame (5045) is fixedly connected to the outer wall of the support rod (5046), and the end of the support rod (5046) away from the fixing frame (5045) is fixedly connected to the outer wall of the scraper rod (5034), and the outer wall of the support rod (5046) is sleeved with the inner wall of the counterweight block (5035).

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