A sewage treatment device for environmental pollution control

Abstract

The present invention provides a sewage treatment device for environmental pollution control, which belongs to the technical field of sewage treatment. It comprises a machine body, a collection box is fixedly connected in the machine body, a scraper mechanism is installed on the top of the machine body, and the scraper mechanism is used to clean the scum; the scraper mechanism comprises a motor fixedly connected to the top of the machine body, the output end of the motor is fixedly connected to a rotating shaft, both ends of the rotating shaft are fixedly connected to gears, and chains are meshed outside the gears; the scraper assembly is used to adjust the height of the scraper mechanism to handle the scum. The present invention can not only automatically adjust the height of the scraper by means of the buoyancy of the liquid surface on the plate, but also accurately adjust the height of the scraper assembly according to the height of different liquid levels and the number of bubbles, so as to clean the scum more accurately and thoroughly. The scraper assembly can also use buoyancy and gravity to move itself to the position of the collection box, and automatically achieve the cleaning effect of excess scum on the plate.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a sewage treatment device for environmental pollution control. Background Art

[0002] The sewage problem in environmental pollution is a global environmental problem. It involves sewage from various sources, including industrial wastewater, agricultural sewage, municipal sewage, domestic sewage, etc. Among them, flotation machines are widely used in industrial and municipal sewage treatment. Flotation machines are a type of equipment that uses the principle of air buoyancy to remove suspended matter and grease in water, especially in removing tiny suspended particles that are difficult to settle.

[0003] The general process of flotation machine is as follows: first, air is dissolved in water through an air pump to form saturated dissolved air water. When the dissolved air water enters the flotation tank, the pressure is rapidly reduced through the releaser, and the air dissolved in the water forms a large number of tiny bubbles and is released. These tiny bubbles attach to suspended matter or grease, reducing their density and floating to the water surface. Finally, the floating scum is collected and removed by the scraper mechanism, thereby achieving the purpose of purifying the water quality.

[0004] At present, the installation method of the scraper mechanism on the flotation machine and the structure of the plate body are generally an integrated fixed structure, that is, after the scraper mechanism is installed, it can only process scum at the same horizontal height. However, the types of sewage processed by the flotation machine are different, and the amount of bubbles generated when processing sewage with different pollution degrees is also different. This makes the height of the liquid level in the flotation machine different. When the liquid level floats up and down obviously, it will directly affect the cleaning effect of the scraper mechanism on the scum. If the liquid level is too high, the scraper plate will penetrate into the liquid. Penetrating into the liquid surface will not only increase the resistance of water to the scraper plate, thereby increasing the motor load, but also because the scraper plate has a limited height, the scum will pass over the scraper plate and leave residue; if the liquid level is too low, the scraper plate cannot fully touch the scum, thereby making it impossible to completely clean up the scum, reducing the efficiency of scum cleaning. Therefore, in view of the above problems, the present invention provides a sewage treatment device for environmental pollution control to meet the needs. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a sewage treatment device for environmental pollution control, which can not only automatically adjust the height of the scraper by making use of the buoyancy of the liquid surface on the plate, but also accurately adjust the height of the scraper according to the height of different liquid levels and the number of bubbles, so as to clean the scum more accurately and thoroughly. The scraper can also use the buoyancy and gravity to move itself to the position of the collection box, so as to automatically achieve the cleaning effect of excess scum on the plate. The above arrangement can solve the problem that when the liquid level floats up and down obviously during the use of the scraper mechanism in the flotation machine, the scraper mechanism will directly affect the cleaning effect of the scum.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A sewage treatment device for environmental pollution control comprises a body, a collecting box is fixedly connected to the body, a scraping mechanism is installed on the top of the body, and the scraping mechanism is used to clean floating scum; the scraping mechanism comprises a motor fixedly connected to the top of the body, the output end of the motor is fixedly connected to a rotating shaft, both ends of the rotating shaft are fixedly connected to gears, and chains are meshed outside the gears; a scraping assembly is used to adjust the height of the scraping mechanism to handle floating scum, and the scraping assembly is connected to the chain.

[0008] Optionally, the scraper assembly includes a mounting plate fixedly connected to the chain, an upper scraper is screwed onto the mounting plate by screws, an adjustment plate is slidably connected to the outer wall of the upper scraper, and a lower scraper is rotatably connected to the inner wall of the adjustment plate.

[0009] Optionally, the middle position of the upper scraper plate is an outwardly convex arc structure, and both ends of the upper scraper plate are fixedly connected with arc surfaces, and the arc surfaces have an inwardly concave arc structure.

[0010] Optionally, a connecting block is fixedly connected to the outer wall of the upper scraper, a connecting rod is fixedly connected to the top of the connecting block, and a limiting block is fixedly connected to one side of the connecting block.

[0011] Optionally, a connecting plate is fixedly connected to the outer wall of the adjustment plate, and both ends of the connecting plate are fixedly connected to connecting heads that are adapted to the shape of the limit block. The top of the connecting plate is fixedly connected to multiple groups of pull tabs arranged linearly, and one end of the pull tab is hung on the outer wall of the connecting rod.

[0012] Optionally, the overall structural profile of the adjustment plate is consistent with the profile of the upper scraper plate, and a large number of lightweight grooves are opened on the adjustment plate.

[0013] Optionally, a plurality of groups of plug blocks are inserted into the bottom outer wall of the lower scraper plate, and a counterweight ball is rotatably connected to the bottom outer wall of each of the plurality of groups of plug blocks.

[0014] Optionally, a hanging rod is fixedly connected to one side of the adjustment plate, and a hook matching the size of the hanging rod is fixedly connected to the bottom of the lower scraper plate.

[0015] Optionally, a stopper is fixedly connected to the top inner wall of the lower scraper plate, and an avoidance groove is provided on the bottom outer wall of the upper scraper plate, and the stopper is at the same height as the avoidance groove.

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

[0017] In the above scheme, by setting up the scraper assembly, not only can the height of the scraper be automatically adjusted with the help of the buoyancy of the liquid surface on the plate, but also the height of the scraper assembly can be accurately adjusted according to the height of different liquid levels and the number of bubbles, so as to clean the scum more accurately and thoroughly. The scraper assembly can also use buoyancy and gravity to move itself to the collection box position, thereby automatically cleaning the excess scum on the plate. The automatic cleaning process is fully automatic and does not require any human operation.

[0018] By arranging an upper scraper in the scraper assembly, the arc-shaped surfaces at both ends of the upper scraper have an inwardly concave arc-shaped structure. Therefore, when the upper scraper moves, the scum can be guided to move from both sides toward the middle with the help of its inclined angle. Furthermore, the arc-shaped structure located in the middle position of the upper scraper has an outwardly convex shape. Such a structure, combined with the setting of the guiding structures on both sides, can achieve a wrapping collection effect on the scum. Such a setting makes the contact area between the upper scraper and the scum larger and the wrapping range wider, thereby improving the scraping effect of the scum.

[0019] An adjusting plate is provided in the scraper assembly, which is located between the upper scraper and the lower scraper to connect the two. Since the adjusting plate can slide freely on the upper scraper, and the lower scraper and the adjusting plate are structures with lighter materials, when the scraper assembly contacts the liquid surface, the adjusting plate and the lower scraper will float up. During the floating process, the height of the lower scraper can be automatically adjusted according to the height of the liquid level. Such an adjustment method is not only simple in structure, but also does not require any human intervention, which greatly improves the practicability of the scraper assembly.

[0020] By arranging pull tabs and counterweight balls in the scraper assembly, firstly, the counterweight balls can be freely disassembled and assembled at the bottom of the lower scraper plate, and secondly, the multiple groups of pull tabs on the adjustment plate can be selectively hung on the upper scraper plate. Therefore, the user can change the number of pull tabs hung and the number of counterweight balls assembled to balance the depth of the lower scraper plate in the liquid, thereby more accurately adjusting the height of the scraper assembly for scum cleaning according to the viscosity of the liquid and the number of bubbles, thereby further improving the scraper assembly's cleaning effect on scum.

[0021] By arranging a lower scraper in the scraper assembly, the overall structural profile formed by the upper scraper and the lower scraper is L-shaped, and the bottom of the lower scraper has a downward tilt angle. Such a structure ensures that when the lower scraper contacts the water surface, under the combined action of the pull piece and the counterweight ball, the lower scraper will not completely float on the water surface, but the inclined structure at its end will sink partially into the water. Such a setting is to guide and collect the scum with the help of its inclined angle, thereby further improving the cleaning effect of the scum.

[0022] To sum up, the scraper assembly mainly utilizes the buoyancy of water on the plate and the pulling force of the counterweight ball on the plate, so that the two cooperate with each other to accurately achieve the effect of adjusting the height of the scraper assembly. During the entire adjustment process, no auxiliary tools are required, no power source is required, and no human intervention is required, thereby making the entire scraper assembly more automated. Furthermore, when the scraper assembly leaves the water surface, the gravity of the counterweight ball will pull the lower scraper plate to rotate. At this time, the scum attached to the surface of the lower scraper plate will automatically detach to prevent the scum from remaining on the lower scraper plate, so that the lower scraper plate will not contaminate the cleaned liquid when it re-enters the water. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a sewage treatment device for environmental pollution control;

[0025] Figure 2 This is an enlarged three-dimensional structural diagram of the scraping mechanism;

[0026] Figure 3 It is a schematic diagram of the enlarged three-dimensional structure of the scraping assembly;

[0027] Figure 4 It is a schematic diagram of the enlarged three-dimensional structure of the scraping assembly;

[0028] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the scraping assembly;

[0029] Figure 6 for Figure 5 A in the middle is an enlarged schematic diagram of the three-dimensional structure;

[0030] Figure 7 It is a schematic diagram of the enlarged three-dimensional structure of the upper scraper and the adjustment plate;

[0031] Figure 8 for Figure 7 The enlarged three-dimensional structure diagram at B in the middle;

[0032] Fig. 9 It is a schematic diagram of the enlarged three-dimensional structure of the upper scraper;

[0033] Fig.10 It is a schematic diagram of the enlarged three-dimensional structure of the adjustment plate;

[0034] Fig.11 It is a schematic diagram of the enlarged three-dimensional structure of the lower scraper;

[0035] Fig.12 This is an enlarged schematic diagram of the three-dimensional structure of the counterweight ball.

[0036] [reference numerals]

[0037] 1. Machine body; 2. Collection box; 3. Motor; 4. Gear; 5. Rotating shaft; 6. Chain; 7. Mounting plate; 8. Upper scraper; 801. Arc surface; 802. Connecting block; 803. Connecting rod; 804. Limiting block; 805. Avoidance groove; 9. Adjusting plate; 901. Connecting plate; 902. Pulling piece; 903. Connecting head; 904. Hanging rod; 905. Lightweight groove; 10. Lower scraper; 11. Block; 12. Hook; 13. Insert block; 14. Counterweight ball.

[0038] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0039] The following is a detailed description of a sewage treatment device for environmental pollution control provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0040] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0041] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0042] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0043] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0044] like Figures 1 to 12As shown, an embodiment of the present invention provides a sewage treatment device for environmental pollution control, comprising a body 1, a collecting box 2 is fixedly connected inside the body 1, a scraping mechanism is installed on the top of the body 1, and the scraping mechanism is used to clean the floating scum; the scraping mechanism comprises a motor 3 fixedly connected to the top of the body 1, the output end of the motor 3 is fixedly connected to a rotating shaft 5, both ends of the rotating shaft 5 are fixedly connected to a gear 4, and a chain 6 is meshed outside the gear 4; a scraping assembly, the scraping assembly is used to adjust the height of the scraping mechanism to process the floating scum, the scraping assembly is connected to the chain 6, and the collecting box 2 in the body 1 is used to collect the floating scum cleaned by the scraping mechanism Scum, in the scraper mechanism, the motor 3 is the only power source, and a total of four gears 4 are arranged on the top of the body 1. These four gears 4 are symmetrically distributed in pairs to form two groups. The two groups of gears 4 are connected together by chains 6, and the single group of gears 4 are connected to each other by rotating shafts 5. When the motor 3 is working, it will first drive one group of gears 4 to rotate. During the rotation of the gears 4, the chain 6 is driven to drive the other group of gears 4 to rotate together. The scraper assembly is installed on the chain 6, and the scraper assembly will move with the chain 6, and then scrape the scum into the collection box 2 during the movement, thereby achieving the cleaning effect of the scum. The scraper assembly provided in the present application can not only automatically adjust the height of the scraper with the help of the buoyancy of the liquid surface on the plate, but also can use the buoyancy and gravity to automatically achieve the cleaning effect of the excess scum on the plate when the scraper assembly moves to the position of the collection box 2, and the scraper assembly has a simple structure, is easy to install, and has a wide range of applications.

[0045] As an implementation method in this embodiment, Figures 1 to 5 As shown, the scraper assembly includes a mounting plate 7 fixedly connected to the chain 6, an upper scraper 8 is screwed to the mounting plate 7 by screws, the middle position of the upper scraper 8 is an arc-shaped structure protruding outward, both ends of the upper scraper 8 are fixedly connected with arc-shaped surfaces 801, and the arc-shaped surface 801 has an arc-shaped structure concave inward, and the scraper assembly is fixedly installed on the chain 6 through the mounting plate 7. A total of multiple groups of scraper assemblies are arranged on the chain 6. The upper scraper 8 is located at the top of the entire scraper assembly in the scraper assembly. The two arc-shaped surfaces 801 are arranged to provide The cleaning effect of the scum is improved. Specifically, the arc surface 801 located at both ends has an inwardly concave arc structure. Therefore, when the upper scraper 8 moves, the scum can be guided to move from both sides toward the middle by means of its inclined angle. Furthermore, the arc structure located in the middle position has an outwardly convex shape. Such a structure, combined with the setting of the guiding structures on both sides, can have a wrapping collection effect on the scum. Such a setting makes the contact area between the upper scraper 8 and the scum larger and the wrapping range wider, thereby improving the scraping effect of the scum.

[0046] In this embodiment, if Figures 3 to 5 and Figures 7 to 10As shown, an adjusting plate 9 is slidably connected to the outer wall of the upper scraper 8, a connecting block 802 is fixedly connected to the outer wall of the upper scraper 8, a connecting rod 803 is fixedly connected to the top of the connecting block 802, a limiting block 804 is fixedly connected to one side of the connecting block 802, a connecting plate 901 is fixedly connected to the outer wall of the adjusting plate 9, both ends of the connecting plate 901 are fixedly connected to connecting heads 903 that are adapted to the shape of the limiting block 804, a plurality of groups of pull tabs 902 that are linearly arranged are fixedly connected to the top of the connecting plate 901, and one end of the pull tab 902 is hung on the connecting On the outer wall of the connecting rod 803, the overall structural profile of the adjusting plate 9 is consistent with the profile of the upper scraper 8. A large number of lightweight grooves 905 are opened on the adjusting plate 9. The adjusting plate 9 is located in the middle position in the scraper assembly. The adjusting plate 9 and the upper scraper 8 are not fixed together, but can slide up and down with each other. Specifically, the adjusting plate 9 and the upper scraper 8 are connected to each other through the connecting block 802 and the connecting head 903. First, the connecting block 802 can slide freely on the surface of the limit block 804. Secondly, the connecting head 903 has a groove consistent with the limit block 804. The shape of the pull tab 902 is such that the connection head 903 can be engaged with the limit block 804, thereby ensuring that the connection head 903 will not be disengaged or misaligned when sliding up and down on the surface of the connection block 802. Furthermore, the pull tab 902 on the top of the connection plate 901 is hung on the connection rod 803, and the connection rod 803 is a circular rod structure. The end of the pull tab 902 is a circular hook structure. Such a setting allows the pull tab 902 to be directly hung on the connection rod 803. Therefore, the upper scraper 8 and the adjustment plate 9 are not only connected by the connection The head 903 and the connecting block 802 are snap-fitted to each other and connected to each other through the pull tab 902. The pull tab 902 itself is an elastic structure. When the pull tab 902 is at the maximum deformation limit, the connecting head 903 is located at the bottom of the limit block 804. This arrangement can prevent the upper scraper 8 and the adjustment plate 9 from being disconnected. From the above description, it can be clearly understood that the connection method between the adjustment plate 9 and the upper scraper 8 is unique, and the connection structure is simple and ingenious. While ensuring that the two will not be separated, the two can also slide against each other from time to time.

[0047] In this embodiment, if Figures 3 to 12As shown, the inner wall of the adjusting plate 9 is rotatably connected with the lower scraper plate 10, and a plurality of groups of plug blocks 13 are inserted on the bottom outer wall of the lower scraper plate 10, and the bottom outer walls of the plurality of groups of plug blocks 13 are rotatably connected with counterweight balls 14, one side of the adjusting plate 9 is fixedly connected with a hanging rod 904, and a hook 12 that matches the size of the hanging rod 904 is fixedly connected to the bottom of the lower scraper plate 10, and a stopper 11 is fixedly connected to the top inner wall of the lower scraper plate 10, and an avoidance groove 805 is provided on the bottom outer wall of the upper scraper plate 8, and the height of the stopper 11 is consistent with the avoidance groove 805. The lower scraper plate 10 is located at the bottom in the scraping assembly, and the overall structural contour of the lower scraper plate 10 is consistent with that of the adjusting plate 9, and is located inside the adjusting plate 9. The upper scraper plate 8 and the adjusting plate 9 are connected together by the hook 12 and the hanging rod 904. Such a structural arrangement allows the two to rotate with each other at the same time. The bottom of the lower scraper plate 10 is also provided with an avoidance groove 805. The balancing ball 14 is connected to the lower scraper 10 by an insert block 13, and the insert block 13 is inserted into the groove body at the bottom of the lower scraper 10. The shape of the groove body matches the shape of the insert block 13, thereby ensuring that the insert block 13 will not be detached after being inserted into the groove body. Such a connection method between the balancing ball 14 and the lower scraper 10 is not only simple in structure, but also convenient and efficient in disassembly and assembly. As described above, the adjustment plate 9 can slide freely on the upper scraper 8. During the up and down sliding of the adjustment plate 9, the lower scraper 10 will move with the adjustment plate 9. Specifically, when the connecting head 903 on the adjustment plate 9 slides to the bottom of the limit block 804, the stop block 11 will also move to the bottom of the avoidance groove 805, thereby making it impossible for the avoidance groove 805 to continue to block and limit the stop block 11. At this time, the lower scraper 10 can rotate freely on the adjustment plate 9.

[0048] In the entire scraper assembly, the upper scraper plate 8 and the lower scraper plate 10 cooperate to form a scraping structure for the scum in the entire scraper assembly. The overall structural profile formed by the upper scraper plate 8 and the lower scraper plate 10 is L-shaped, and the bottom of the lower scraper plate 10 has a downward tilt. The lower scraper plate 10 and the adjustment plate 9 are structures of lighter material. This arrangement is to allow the lower scraper plate 10 and the adjustment plate 9 to float on the water surface. When the scraper assembly contacts the liquid surface, the adjustment plate 9 and the lower scraper plate 10 will float. Because multiple groups of counterweight balls 14 are arranged at the bottom of the lower scraper plate 10, the gravity of the counterweight balls 14 will prevent the lower scraper plate 10 from completely floating on the water. On the water surface, the inclined structure at its end will sink partially into the water. This arrangement is to guide and collect the scum with the help of its inclined angle, thereby further improving the cleaning effect of the scum. Furthermore, the upper scraper 8 is fixed on the mounting plate 7, so the height and position of the upper scraper 8 cannot be changed, but the adjusting plate 9 and the upper scraper 8 can slide up and down with each other. This arrangement cooperates with the buoyancy between the upper and lower scrapers 10 and the adjusting plate 9, so that the lower scraper 10 can automatically adjust the height according to the height of the liquid level. Furthermore, a plurality of pull tabs 902 are arranged on the adjusting plate 9, and the arrangement of the pull tabs 902 can cooperate with the upper buoyancy to synchronously adjust the height of the lower scraper 10 has the effect of height adjustment, because one end of the pull-tab 902 is hung on the connecting rod 803, and the counterweight ball 14 can be freely disassembled from the bottom of the pull-scraping plate. Such a setting allows the user to change the number of pull-tabs 902 hung and the number of counterweight balls 14 assembled to balance the depth of the lower scraper 10 in the liquid, thereby more accurately adjusting the height of the scraper assembly for cleaning the scum according to the viscosity of the liquid and the number of bubbles; when the lower scraper 10 leaves the water surface, there is no buoyancy between the lower scraper 10 and the adjustment plate 9, but the counterweight ball 14 will always be subject to gravity, and the counterweight ball 14 will continue to pull the lower pull plate and the adjustment plate 9 downward until the pull-tab 902 When it is at the maximum deformation limit, the connecting head 903 is located at the bottom of the limit block 804, and the block 11 will also move to the bottom of the avoidance groove 805, so that the avoidance groove 805 can no longer block and limit the block 11. At this time, the lower scraper 10 will be pulled under the gravity of the counterweight ball 14, thereby rotating on the adjustment plate 9. Since the counterweight ball 14 is installed on the side of the pull-down plate away from the adjustment plate 9, the pull-down plate can only rotate toward the inner side of the pull-down plate with the hanging rod 904 as the axis. During the rotation of the pull-down plate, the waste residue attached to its surface will be dumped into the collection box 2 during the rotation, thereby avoiding the phenomenon of waste residue residue residue.

[0049] The working principle provided by the present invention is that when it is necessary to use the scraping mechanism to process the scum in the machine body 1, the motor 3 is started first. The motor 3 will first drive a group of gears 4 on the top of the machine body 1 to rotate. During the rotation of the gears 4, the chain 6 will be driven to drive another group of gears 4 to rotate together. At this time, the upper scraping plate and the lower scraping plate on the chain 6 will move with the chain 6, and then the scum will be scraped into the collection box 2 during the movement, thereby achieving the cleaning effect of the scum. The upper scraper 8 is located at the top of the entire scraper assembly. Since the arc-shaped surfaces 801 at both ends of the upper scraper 8 have an inwardly concave arc-shaped structure, when the upper scraper 8 moves, the scum can be guided to move from both sides toward the middle by means of its inclined angle. The arc-shaped structure located in the middle of the upper scraper plate has an outwardly convex shape. Such a structure, combined with the setting of the guiding structures on both sides, can have a wrapping collection effect on the scum. Such a setting makes the contact area between the upper scraper 8 and the scum larger and the wrapping range wider, thereby improving the scraping effect on the scum. The upper scraper 8, the adjustment plate 9 and the lower scraper 10 are all arc-shaped structures, and the structural contours of the three are consistent. Such a setting enables the upper scraper 8 and the lower scraper 10 to improve the cleaning effect of the scum by means of the above-mentioned two arcs during the movement;The adjusting plate 9 is located in the middle of the entire scraper assembly. It not only connects the upper scraper plate 8 and the lower scraper plate 10, but also can slide freely on the upper scraper plate 8. The principle is as follows: the adjusting plate 9 and the upper scraper plate 8 are connected to each other through the connecting block 802 and the connecting head 903. First, the connecting block 802 can slide freely on the surface of the limit block 804. Secondly, the connecting head 903 has a shape consistent with the limit block 804. This arrangement allows the connecting head 903 to be connected and engaged with the limit block 804, thereby ensuring that the connecting head 903 will not be disengaged or misaligned during the process of sliding up and down on the surface of the connecting block 802. Since the two can slide up and down, The lower scraper 10 and the adjusting plate 9 are of light material. Therefore, when the scraping assembly contacts the liquid surface, the adjusting plate 9 and the lower scraper 10 will float. During the floating process, the height of the lower scraper 10 can be automatically adjusted according to the height of the liquid surface. In order to more accurately adjust the height of the lower scraper 10, a plurality of groups of counterweight balls 14 are arranged at the bottom of the lower scraper 10, and a plurality of groups of pull tabs 902 are arranged between the adjusting plate 9 and the upper scraper 8. First, the counterweight balls 14 can be freely disassembled and assembled at the bottom of the lower scraper 10. Secondly, the plurality of groups of pull tabs 902 on the adjusting plate 9 can be selectively hung on the upper scraper 8. Therefore, the user can change the number of pull tabs 902 hung and the number of counterweight balls 14 assembled to balance the lower scraper The depth of the scraper 10 in the liquid can more accurately adjust the height of the scraper assembly for cleaning the scum according to the viscosity of the liquid and the number of bubbles. In addition, the setting of the pull-down plate and the counterweight ball 14 has a further effect. Considering that the waste scum and bubbles have a certain adhesion, when the scraper 10 leaves the water surface, there is no buoyancy between the scraper 10 and the adjustment plate 9, but the counterweight ball 14 will always be subject to gravity. At this time, the counterweight ball 14 will continue to pull the pull-down plate and the adjustment plate 9 downward until the pull tab 902 is at the maximum deformation limit. At this time, the connecting head 903 is at the bottom of the limit block 804, and the stop block 11 will also move to the bottom of the avoidance groove 805, thereby making the avoidance groove 805 When the groove 805 cannot continue to block the block 11, the lower scraper 10 will be pulled by the gravity of the weight ball 14, so that it rotates on the adjustment plate 9. Since the weight ball 14 is installed on the side of the lower pull-down plate away from the adjustment plate 9, the lower pull-down plate can only rotate toward the inner side of the lower pull-down plate with the hanging rod 904 as the axis. During the rotation of the lower pull-down plate, the waste residue attached to its surface will be dumped into the collection box 2 during the rotation, thereby avoiding the phenomenon of waste residue residue remaining. This setting once again utilizes the gravity of the weight ball 14 and the light material of the lower scraper 10, so that the lower scraper 10 automatically cleans the waste residue attached to its surface when it leaves the water surface. ;

[0050] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A sewage treatment device for environmental pollution control, comprising a body, characterized in that: A collecting box is fixedly connected to the body, and a scraping mechanism is installed on the top of the body, and the scraping mechanism is used to clean the floating scum; The scraping mechanism comprises a motor fixedly connected to the top of the machine body, the output end of the motor is fixedly connected to a rotating shaft, both ends of the rotating shaft are fixedly connected to gears, and the gears are meshed with chains; A scraping assembly, the scraping assembly is used to adjust the height of the scraping mechanism to process the floating scum, and the scraping assembly is connected to the chain; The scraper assembly comprises a mounting plate fixedly connected to the chain, an upper scraper is screwed to the mounting plate by screws, an adjustment plate is slidably connected to the outer wall of the upper scraper, and a lower scraper is rotatably connected to the inner wall of the adjustment plate; The middle position of the upper scraper is an outwardly convex arc structure, and both ends of the upper scraper are fixedly connected with arc surfaces, and the arc surfaces have an inwardly concave arc structure; A connecting block is fixedly connected to the outer wall of the upper scraper, a connecting rod is fixedly connected to the top of the connecting block, and a limiting block is fixedly connected to one side of the connecting block; A connecting plate is fixedly connected to the outer wall of the adjusting plate, and both ends of the connecting plate are fixedly connected to connectors that match the shape of the limit block, and a plurality of groups of pull tabs arranged linearly are fixedly connected to the top of the connecting plate, and one end of the pull tab is hung on the outer wall of the connecting rod; The overall structural profile of the adjustment plate is consistent with the profile of the upper scraper plate, and a large number of lightweight grooves are provided on the adjustment plate; A plurality of groups of plug blocks are inserted on the bottom outer wall of the lower scraper, and a counterweight ball is rotatably connected to the bottom outer wall of each group of the plug blocks; A hanging rod is fixedly connected to one side of the adjustment plate, and a hook matching the size of the hanging rod is fixedly connected to the bottom of the lower scraper plate; A stopper is fixedly connected to the top inner wall of the lower scraper, and an avoidance groove is provided on the bottom outer wall of the upper scraper, and the stopper is at the same height as the avoidance groove; The lower scraper is rotatably connected to the inner wall of the adjusting plate, and multiple groups of plug-in blocks are inserted on the bottom outer wall of the lower scraper, and the bottom outer walls of the multiple groups of plug-in blocks are rotatably connected with counterweight balls. A hanging rod is fixedly connected to one side of the adjusting plate, and a hook that matches the size of the hanging rod is fixedly connected to the bottom of the lower scraper. A stopper is fixedly connected to the top inner wall of the lower scraper, and an avoidance groove is provided on the bottom outer wall of the upper scraper. The height of the stopper is consistent with that of the avoidance groove. The lower scraper is located at the bottom in the scraping assembly. The lower scraper is consistent with the overall structural contour of the adjusting plate and is located inside the adjusting plate. The upper scraper and the adjusting plate are connected together by a hook and a hanging rod. The structural setting allows the two to rotate relative to each other. A counterweight ball is also provided at the bottom of the lower scraper. The counterweight ball and the lower scraper are connected by an insert block. The insert block is inserted into a groove body at the bottom of the lower scraper. The shape of the groove body matches the shape of the insert block, thereby ensuring that the insert block will not detach after being inserted into the groove body. During the up and down sliding of the adjustment plate, the lower scraper will move with the adjustment plate. When the connecting head on the adjustment plate slides to the bottom of the limit block, the block will also move to the bottom of the avoidance groove, thereby making it impossible for the avoidance groove to continue to block and limit the block. At this time, the lower scraper can rotate freely on the adjustment plate.

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