Sewage treatment device for environmental engineering

Abstract

The invention relates to the technical field of sewage treatment, and provides a sewage treatment device and a sewage treatment tank for environmental engineering, a pretreatment cylinder fixedly penetrates through the surface of the sewage treatment tank, according to the sewage treatment device for environmental engineering, an eccentric wheel rotatably contacts and extrudes a contact plate to move, and the contact plate moves to drive a connecting plate to move; a connecting plate moves to drive a coarse filter plate and a fine filter plate to move, at the moment, when the coarse filter plate and the fine filter plate move at the same time under the action of an eccentric wheel, the self-cleaning effect is achieved, and the situation that the coarse filter plate and the fine filter plate are blocked by impurities in the long-time operation process, and then the operation effect and efficiency of the coarse filter plate and the fine filter plate are affected is avoided; meanwhile, the filtering part is prevented from being blocked due to impurity accumulation during long-term operation, and manual frequent disassembly and cleaning are not needed; by means of the technical scheme, the technical problems that in the prior art, the filtering effect is reduced along with the increase of the use time, pollutants are gradually accumulated, the filtering efficiency is reduced, and then the filtering efficiency of equipment is affected are solved.

Description

TECHNICAL FIELD

[0001] The embodiment of the application relates to the technical field of sewage treatment, and in particular to a sewage treatment device for environmental engineering. BACKGROUND

[0002] Sewage treatment refers to a process of treating sewage through physical, chemical and biological methods to reach environmental protection discharge standards or reuse standards, and the sewage treatment is not only a key link in urban and industrial water treatment, but also an important measure for preventing water pollution and protecting water resources.

[0003] The patent with the patent announcement number CN217613379U relates to a sewage treatment device for environmental engineering, which comprises a base, support frames are symmetrically arranged on the two sides of the base, sliding rails are arranged in the middle portions of the two support frames, sliding blocks are slidably arranged in the sliding rails, a connecting seat is hingedly arranged between the two sliding blocks, a filter cartridge is arranged below the connecting seat, a clamping device is arranged between the filter cartridge and the connecting seat, a collecting basin is arranged below the filter cartridge of the base, and a water outlet is arranged in the bottom of the collecting basin.

[0004] In the above patent, the base is provided with the collecting basin below the filter cartridge, and the water outlet is arranged in the bottom of the collecting basin; the patent can effectively reduce the phenomenon of filter cartridge blockage, facilitate manual timely cleaning of the filter cartridge, facilitate disassembly and installation, improve sewage filtration efficiency, and improve the filtration effect of sewage.

[0004] In the above patent, the base is provided with the collecting basin below the filter cartridge, and the water outlet is arranged in the bottom of the collecting basin; the patent can effectively reduce the phenomenon of filter cartridge blockage, facilitate manual timely cleaning of the filter cartridge, facilitate disassembly and installation, improve sewage filtration efficiency, and improve the filtration effect of sewage. SUMMARY

[0005] In order to overcome the above defects, the embodiment of the application provides a sewage treatment device for environmental engineering, which solves the technical problem that the filtration effect decreases with the increase of use time, pollutants gradually accumulate to cause the filtration efficiency to decrease, and the filtration efficiency of the equipment is affected.

[0006] According to one aspect, at least one embodiment of the present application provides a sewage treatment device for environmental engineering, comprising a sewage treatment tank, a pretreatment cylinder is fixedly penetrated on the surface of the sewage treatment tank, a treatment device for filtering sewage is arranged on the inner wall of the pretreatment cylinder, the treatment device comprises a coarse filter plate, the coarse filter plate is slidingly installed on the inner wall of the pretreatment cylinder, a circulating pipe is fixedly penetrated on the surface of the pretreatment cylinder, a fine filter plate is slidingly installed on the inner wall of the pretreatment cylinder, a partition plate is fixedly installed on the surface of the fine filter plate, a connecting plate is fixedly installed on the surface of the fine filter plate, a contact plate is fixedly installed on the surface of the connecting plate, a rotating rod is rotationally installed on the inner wall of the pretreatment cylinder, an eccentric wheel is fixedly installed on the circumferential surface of the rotating rod, and the flowing sewage is filtered by the filter plate and uniformly falls through the water leakage hole, so that the filtration and treatment of large-particle impurities and foreign matters in the sewage are realized.

[0007] According to the above technical solution, the angle of the coarse filter plate is arranged as an inclined angle, the surface of the circulating pipe is provided with a water leakage hole, and the inner wall of the circulating pipe is provided with a filter plate, so that the impurities are discharged through the fine filter plate, the secondary filtration of the sewage is realized, the filtration and treatment of small-particle impurities in the sewage are realized, and different sizes of pollutants in the sewage are removed through the coarse filter plate and the fine filter plate.

[0008] According to the above technical solution, the end of the connecting plate away from the fine filter plate is fixedly connected with the coarse filter plate, and the surface of the contact plate is provided with an arc surface one facilitating the extrusion stress of the eccentric wheel, compared with a single filtration structure, the impurity removal rate in the sewage pretreatment stage is greatly improved, and a good water quality foundation is laid for subsequent depth treatment.

[0009] According to the above technical solution, one end of the rotating rod is connected with the output end of the motor, and the angle of the fine filter plate is arranged as an inclined angle, so that the self-cleaning effect of the coarse filter plate and the fine filter plate is realized when they are simultaneously moved under the action of the eccentric wheel.

[0010] According to another aspect, at least one embodiment of the present application also provides a sewage treatment device for environmental engineering, an auxiliary device for assisting the sewage treatment in the sewage treatment tank is arranged on the inner wall of the sewage treatment tank, the auxiliary device comprises a rotating shaft, the rotating shaft rotationally penetrates the inner wall of the sewage treatment tank, a spiral stirring plate is fixedly installed on the circumferential surface of the rotating shaft, an activated carbon plate is fixedly installed on the inner wall of the pretreatment cylinder, a self-cleaning scraper is fixedly installed on the circumferential surface of the rotating shaft, a knocking rod is fixedly installed on the bottom of the fine filter plate, a struck disc is fixedly installed on the circumferential surface of the rotating shaft, and a fixed disc is fixedly installed on the surface of the rotating shaft, so that the effects and efficiencies of the coarse filter plate and the fine filter plate are not affected due to the blockage of impurities in the long-time running process, the filtering components are not blocked due to the accumulation of impurities in the long-time running, and manual frequent disassembly and cleaning are not required.

[0011] According to the technical scheme, one end of the rotating shaft is connected with the motor output end, and the angle of the self-cleaning scraper is set as an inclined angle, so that the sewage and the filtered clean water can be fully mixed, local water quality unevenness is avoided, and the overall water quality stability is improved.

[0012] According to the technical scheme, the self-cleaning scraper is rotationally connected with the activated carbon plate, and the end of the knocking rod close to the struck disc is provided with the arc surface two for contacting and knocking the struck disc, so that the effect and efficiency of the activated carbon plate on adsorption of small pollutants are not affected due to blockage, the operation self-cleaning effect of the activated carbon plate is realized, the adsorption efficiency of the activated carbon plate is ensured, and the replacement cycle of the activated carbon plate is prolonged.

[0013] According to another aspect, at least one embodiment of the present application also provides a sewage treatment device for environmental engineering, and the bottom of the fixed disc is provided with a feeding device for feeding the inside of the sewage treatment tank, the feeding device comprises a wall scraping plate, the wall scraping plate is fixedly installed at the bottom of the fixed disc, a feeding cylinder is rotationally installed on the surface of the wall scraping plate, a rotating rod is fixedly installed at the bottom of the feeding cylinder, a contact wheel is fixedly installed at the end of the rotating rod away from the feeding cylinder, a discharging ring is fixedly penetrated in the circumferential surface of the feeding cylinder, a storage cylinder is fixedly installed on the circumferential surface of the rotating shaft, and a feeding pipe is fixedly penetrated in the surface of the storage cylinder.

[0014] According to the technical scheme, the wall scraping plate is provided with the arc surface three matched with the inner wall of the sewage treatment tank, the rotating rod rotationally penetrates the wall scraping plate, the inside of the wall scraping plate is discharged into the inside of the sewage treatment tank through the spray head by the rotation of the discharging ring, the rotating rod linkage realizes the spraying of the medicament and the stirring of the sewage, and the self-rotation of the contact wheel and the revolution ensure complete cleaning.

[0015] According to the technical scheme, the contact wheel is in contact with the inner wall of the sewage treatment tank, the surface of the discharging ring is provided with the spray head, and one end of the feeding pipe away from the storage cylinder is fixedly penetrated in the top of the wall scraping plate, so as to cover the core treatment area inside the sewage treatment tank, at this time, the sewage and the medicament are fully mixed, the reaction time of the medicament and the pollutants is shortened, and the sewage treatment effect and efficiency are improved.

[0016] The embodiment of the present application has the following beneficial effects: In the application, the filtered sewage is filtered through the coarse filter plate, impurities and foreign matters are slid through the inclined angle of the coarse filter plate, and then the impurities are discharged through the circulating pipe, and then the flowing sewage is filtered through the filter plate and uniformly falls through the water leakage hole, at this time, the filtration treatment of large-particle impurities and foreign matters in the sewage is realized, the impurities are intercepted on the top of the fine filter plate, at this time, the baffle guides the sewage, and then the impurities are discharged through the fine filter plate, at this time, the secondary filtration of the sewage is realized, and the filtration treatment of small-particle impurities in the sewage is realized, different particle size pollutants in the sewage are removed through the coarse filter plate and the fine filter plate, compared with a single filter structure, the impurity removal rate in the sewage pretreatment stage is greatly improved, and a good water quality foundation is laid for subsequent deep treatment.

[0017] In the application, the eccentric wheel rotates to contact and extrude the contact plate to move, the contact plate movement drives the connecting plate to move, and the connecting plate movement drives the coarse filter plate and the fine filter plate to move, at this time, the coarse filter plate and the fine filter plate are moved under the action of the eccentric wheel, and the self-cleaning effect is realized, which avoids affecting the operation effect and efficiency of the coarse filter plate and the fine filter plate due to impurity blockage in a long-time operation process, and avoids the blockage of the filter part due to long-term operation and impurity accumulation, without manual frequent disassembly and cleaning.

[0018] In the application, the rotation of the rotating shaft drives the spiral stirring plate to rotate, the spiral stirring plate rotates to stir the sewage in the sewage treatment tank, can fully mix the sewage and the filtered clean water, avoid local water quality uneven, improve the overall water quality stability, the self-cleaning scraper rotates to scrape the impurities and particles attached to the surface of the activated carbon plate, avoid affecting the adsorption effect and efficiency of the activated carbon plate due to blockage, realize the operation self-cleaning effect of the activated carbon plate, at the same time, guarantee the adsorption efficiency of the activated carbon plate, prolong its replacement cycle, the striker plate vibrates under the action of the knocking rod, at this time, the knocking rod vibration drives the self-cleaning scraper and the activated carbon plate to vibrate, at this time, the secondary self-cleaning of the activated carbon plate is realized, and the impurities attached to the surface of the self-cleaning scraper are removed.

[0019] In the application, the rotation of the fixed disc drives the wall scraping plate to rotate, the wall scraping plate rotates to clean the inner wall of the sewage treatment tank, avoid the attachment of impurities or dirt on the inner wall of the sewage treatment tank, at the same time, prevent the attachment of impurities and dirt to form a stubborn dirt layer, avoid the pollution of the inner wall to affect the cleanliness of the device, and prevent the falling of the attached dirt to cause secondary pollution of the sewage.

[0020] In the application, the contact wheel self-rotation drives the rotating rod to rotate, the rotating rod drives the adding cylinder to rotate, and the adding cylinder drives the discharging ring to rotate, at this time, the discharging ring rotates to throw the internal medicament of the wall scraping plate into the internal part of the sewage treatment tank through the spray head, the rotating rod linkage realizes the medicament spraying and sewage stirring, and the self-rotation and revolution of the contact wheel ensure complete cleaning, and further cover the internal core treatment area of the sewage treatment tank, at this time, the sewage and the medicament are fully mixed, the reaction time of the medicament and the pollutants is shortened, and the sewage treatment effect and efficiency are improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some example embodiments of the present application. For those skilled in the art, other drawings can be obtained according to the contents of the example embodiments of the present application and the drawings without creating labor.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the overall internal structure of the present application; Figure 3 It is a schematic diagram of the position structure of the coarse filter plate and the fine filter plate of the present application; Figure 4 It is a schematic diagram of the position structure of the coarse filter plate and the fine filter plate of the present application; Figure 3 Figure 5 It is a schematic diagram of the position structure of the coarse filter plate and the fine filter plate of the present application; Figure 6 It is a schematic diagram of the position structure of the coarse filter plate and the fine filter plate of the present application; Figure 7 It is a schematic diagram of the position structure of the coarse filter plate and the fine filter plate of the present application;

[0023] In the figure: 1, sewage treatment tank; 2, pretreatment cylinder; 31, coarse filter plate; 32, circulating pipe; 33, fine filter plate; 34, partition plate; 35, connecting plate; 36, contact plate; 37, rotating rod; 38, eccentric wheel; 41, rotating shaft; 42, spiral stirring plate; 43, activated carbon plate; 44, self-cleaning scraper; 45, knocking rod; 46, struck disc; 47, fixed disc; 51, wall scraping plate; 52, adding cylinder; 53, rotating rod; 54, contact wheel; 55, discharging ring; 56, storage cylinder; 57, material conveying pipe. DETAILED DESCRIPTION

[0024] The present application will be further described in detail below in combination with the drawings and examples. It can be understood that the specific examples described here are only used to explain the present application, but not to limit the present application. ​

[0025] In order to make the drawings simple, only the parts related to the application are shown in the drawings, and they do not represent the actual structure of the product. In addition, in order to make the drawings simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown schematically, or only one of them is marked. In this document, "one" not only means "only one", but also means "more than one" situation, and "several" includes "two" and "more than two".

[0026] In this document, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In the present application, unless otherwise specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The "below", "under" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0028] In the description of the present embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore cannot be understood as a limitation on the present application.

[0029] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] As Figures 1-7As shown in the figure, it shows a sewage treatment device for environmental engineering in an embodiment of the application, which comprises a sewage treatment tank 1, a pretreatment cylinder 2 is fixedly penetrated on the surface of the sewage treatment tank 1, a treatment device for filtering sewage is arranged on the inner wall of the pretreatment cylinder 2, the treatment device comprises a coarse filter plate 31, the coarse filter plate 31 is slidingly installed on the inner wall of the pretreatment cylinder 2, a circulating pipe 32 is fixedly penetrated on the surface of the pretreatment cylinder 2, a fine filter plate 33 is slidingly installed on the inner wall of the pretreatment cylinder 2, a partition plate 34 is fixedly installed on the surface of the fine filter plate 33, a connecting plate 35 is fixedly installed on the surface of the fine filter plate 33, a contact plate 36 is fixedly installed on the surface of the connecting plate 35, a rotating rod 37 is rotatably installed on the inner wall of the pretreatment cylinder 2, an eccentric wheel 38 is fixedly installed on the circumferential surface of the rotating rod 37, the rotating rod 37 drives the eccentric wheel 38 to rotate, and the eccentric wheel 38 rotates to contact and extrude the contact plate 36 to move.

[0031] The angle of the coarse filter plate 31 is arranged as an inclined angle, the surface of the circulating pipe 32 is provided with a water leakage hole, and the inner wall of the circulating pipe 32 is provided with a filter plate, the filtered sewage is filtered through the coarse filter plate 31, the impurities and foreign matters are slid through the inclined angle of the coarse filter plate 31, and then the impurities are discharged through the circulating pipe 32.

[0032] The end of the connecting plate 35 away from the fine filter plate 33 is fixedly connected with the coarse filter plate 31, the surface of the contact plate 36 is provided with an arc surface one for facilitating the extrusion stress of the eccentric wheel 38, the eccentric wheel 38 rotates to contact and extrude the contact plate 36 to move, and the contact plate 36 drives the connecting plate 35 to move.

[0033] One end of the rotating rod 37 is connected with the output end of the motor, and the angle of the fine filter plate 33 is arranged as an inclined angle.

[0034] In the example, sewage is fed through the water inlet at the top of the pretreatment cylinder 2, when the sewage passes through the coarse filter plate 31, the coarse filter plate 31 intercepts large-particle impurities and foreign matters in the sewage on the surface of the coarse filter plate 31, and then the filtered sewage flows down through the coarse filter plate 31, and the impurities slide down through the inclined angle of the coarse filter plate 31, and then the impurities are discharged through the circulation pipe 32, and then the flowing sewage falls down through the water leakage hole uniformly, at this time, the filtration treatment of large-particle impurities and foreign matters in the sewage is realized, and then the sewage falls on the surface of the fine filter plate 33, at this time, the fine filter plate 33 filters small-particle impurities in the sewage, the sewage is filtered down, and the impurities are intercepted on the top of the fine filter plate 33, at this time, the baffle 34 guides the sewage, and then the impurities are discharged through the fine filter plate 33, at this time, the secondary filtration of the sewage is realized, and the filtration treatment of small-particle impurities in the sewage is realized, and the coarse filter plate 31 and the fine filter plate 33 remove different sizes of pollutants in the sewage, compared with a single filter structure, the impurity removal rate in the sewage pretreatment stage is greatly improved, and a good water quality foundation is laid for subsequent deep treatment, at this time, the rotating rod 37 rotates under the action of the motor output end, the rotating rod 37 drives the eccentric wheel 38 to rotate, the eccentric wheel 38 rotates to contact and press the contact plate 36 to move, the contact plate 36 drives the connecting plate 35 to move, the connecting plate 35 drives the coarse filter plate 31 and the fine filter plate 33 to move, at this time, the coarse filter plate 31 and the fine filter plate 33 move simultaneously under the action of the eccentric wheel 38 to realize the self-cleaning effect, which avoids affecting the operation effect and efficiency of the coarse filter plate 31 and the fine filter plate 33 due to impurity blockage in a long-time operation process, and avoids the blockage of the filter components due to the accumulation of impurities in a long-time operation, without manual frequent disassembly and cleaning.

[0035] As shown in Figures 1-7 It shows another embodiment of the application, the inner wall of the sewage treatment tank 1 is provided with an auxiliary device for assisting the sewage treatment in the sewage treatment tank 1, the auxiliary device includes a rotating shaft 41, the rotating shaft 41 rotates through the inner wall of the sewage treatment tank 1, the circumferential surface of the rotating shaft 41 is fixedly installed with a spiral stirring plate 42, the inner wall of the pretreatment cylinder 2 is fixedly installed with an activated carbon plate 43, the circumferential surface of the rotating shaft 41 is fixedly installed with a self-cleaning scraper 44, the bottom of the fine filter plate 33 is fixedly installed with a knocking rod 45, when the fine filter plate 33 moves downward under the action of the connecting plate 35, the fine filter plate 33 drives the knocking rod 45 to move, the circumferential surface of the rotating shaft 41 is fixedly installed with a struck disc 46, and the surface of the rotating shaft 41 is fixedly installed with a fixed disc 47.

[0036] One end of the rotating shaft 41 is connected with the motor output end, the angle of the self-cleaning scraper 44 is set as an inclined angle, and the knocking rod 45 drives the self-cleaning scraper 44 and the activated carbon plate 43 to vibrate.

[0037] The self-cleaning scraper 44 is rotatably connected to the activated carbon plate 43. The end of the striking rod 45 near the receiving plate 46 is provided with an arc surface for contacting and striking the receiving plate 46. The fine filter plate 33 moves downward, causing the striking rod 45 to move. The striking rod 45 moves downward to contact and strike the surface of the receiving plate 46.

[0038] In this example, when the shaft 41 rotates under the action of the motor output, the rotation of the shaft 41 drives the spiral stirring plate 42 to rotate. The rotation of the spiral stirring plate 42 stirs the sewage inside the sewage treatment tank 1, allowing the sewage to be fully mixed with the filtered clean water, avoiding local water quality unevenness, and improving the overall stability of the effluent water quality. At the same time, the sewage that has passed through secondary filtration enters the sewage treatment tank 1 after being deeply filtered by the activated carbon plate 43. Simultaneously, the rotation of the shaft 41 drives the self-cleaning scraper 44 to rotate, scraping away impurities and particles attached to the surface of the activated carbon plate 43 to prevent blockage and thus affect the activated carbon plate 43. The adsorption effect and efficiency of fine pollutants are achieved, realizing the self-cleaning effect of activated carbon plate 43, while ensuring the adsorption efficiency of activated carbon plate 43 and extending its replacement cycle. At the same time, when fine filter plate 33 moves downward under the action of connecting plate 35, the downward movement of fine filter plate 33 drives the knocking rod 45 to move. The knocking rod 45 moves downward to contact and knock on the surface of the receiving plate 46. Subsequently, the receiving plate 46 vibrates under the action of knocking rod 45. At this time, the vibration of knocking rod 45 drives the self-cleaning scraper 44 and activated carbon plate 43 to vibrate. At this time, the activated carbon plate 43 is self-cleaned twice, and the impurities attached to the surface of self-cleaning scraper 44 are removed.

[0039] like Figures 1-7 As shown, in another embodiment of the present invention, a feeding device for feeding materials into the interior of the sewage treatment tank 1 is provided at the bottom of the fixed disk 47. The feeding device includes a scraper 51, which is fixedly installed at the bottom of the fixed disk 47. An adding cylinder 52 is rotatably mounted on the surface of the scraper 51. A rotating rod 53 is fixedly mounted at the bottom of the adding cylinder 52. A contact wheel 54 is fixedly mounted at the end of the rotating rod 53 away from the adding cylinder 52. A discharge ring 55 is fixedly passed through the circumferential surface of the adding cylinder 52. A storage cylinder 56 is fixedly installed on the circumferential surface of the rotating shaft 41. A conveying pipe 57 is fixedly passed through the surface of the storage cylinder 56. The agent inside the storage cylinder 56 is fed into the interior of the conveying pipe 57 by centrifugal force, and then enters the interior of the scraper 51 through the conveying pipe 57.

[0040] The scraper plate 51 is shaped with an arc surface that fits against the inner wall of the sewage treatment tank 1. The rotating rod 53 rotates through the scraper plate 51, and the rotating rod 53 drives the contact wheel 54 to revolve. The contact wheel 54 is in contact with the inner wall of the sewage treatment tank 1.

[0041] The contact wheel 54 is in contact with the inner wall of the sewage treatment tank 1, the surface of the discharging ring 55 is provided with a spray head, the one end of the feeding pipe 57 away from the storage cylinder 56 is fixedly penetrated through the top of the scraping plate 51, the scraping plate 51 drives the adding cylinder 52 to rotate, and the rotating shaft 41 drives the storage cylinder 56 to rotate.

[0042] In the present example, when the fixed disc 47 rotates under the action of the rotating shaft 41, the fixed disc 47 drives the scraping plate 51 to rotate, the scraping plate 51 rotates to clean the inner wall of the sewage treatment tank 1, avoiding the attachment of impurities or dirt on the inner wall of the sewage treatment tank 1, preventing the attachment of impurities and dirt to form a stubborn dirt layer, avoiding the pollution of the inner wall to affect the cleanliness of the device, preventing the falling of the attached dirt to cause secondary pollution of the sewage, and the scraping plate 51 drives the adding cylinder 52 to rotate, and the rotating shaft 41 drives the storage cylinder 56 to rotate, the medicine in the storage cylinder 56 is transported into the inside of the feeding pipe 57 by centrifugal force, then enters the inside of the scraping plate 51 through the feeding pipe 57, then the adding cylinder 52 drives the rotating rod 53 to rotate, at this time, the rotating rod 53 drives the contact wheel 54 to rotate, because the contact wheel 54 is in contact with the inner wall of the sewage treatment tank 1, then the contact wheel 54 rotates under the action of the inner wall of the sewage treatment tank 1, then the contact wheel 54 drives the rotating rod 53 to rotate, the rotating rod 53 drives the adding cylinder 52 to rotate, and the adding cylinder 52 drives the discharging ring 55 to rotate, at this time, the discharging ring 55 rotates to put the medicine in the inside of the scraping plate 51 into the inside of the sewage treatment tank 1 through the spray head, the rotating rod 53 realizes the spraying of the medicine and the stirring of the sewage, and the rotation of the contact wheel 54 ensures complete cleaning, thereby covering the core treatment area inside the sewage treatment tank 1, at this time, the sewage and the medicine are fully mixed, the reaction time of the medicine and the pollutants is shortened, and the sewage treatment effect and efficiency are improved.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, not to limit it, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A wastewater treatment device for environmental engineering, characterized in that, The system includes a wastewater treatment tank (1), a pretreatment cylinder (2) which is fixedly penetrated through the surface of the wastewater treatment tank (1), and a treatment device for filtering wastewater is provided on the inner wall of the pretreatment cylinder (2). The treatment device includes a coarse filter plate (31), which is slidably installed on the inner wall of the pretreatment cylinder (2). A circulation pipe (32) is fixedly penetrated through the surface of the pretreatment cylinder (2). A fine filter plate (33) is slidably installed on the inner wall of the pretreatment cylinder (2). A partition plate (34) is fixedly installed on the surface of the fine filter plate (33). A connecting plate (35) is fixedly installed on the surface of the fine filter plate (33). A contact plate (36) is fixedly installed on the surface of the connecting plate (35). A rotating rod (37) is rotatably installed on the inner wall of the pretreatment cylinder (2). An eccentric wheel (38) is fixedly installed on the circumferential surface of the rotating rod (37).

2. The wastewater treatment device for environmental engineering according to claim 1, characterized in that: The angle of the coarse filter plate (31) is set to an inclined angle, the surface of the circulation pipe (32) is provided with a water leakage hole, and the inner wall of the circulation pipe (32) is provided with a filter plate.

3. The wastewater treatment device for environmental engineering according to claim 2, characterized in that: The end of the connecting plate (35) away from the fine filter plate (33) is fixedly connected to the coarse filter plate (31), and the surface of the contact plate (36) is provided with an arc surface that facilitates the extrusion and force of the eccentric wheel (38).

4. The wastewater treatment device for environmental engineering according to claim 3, characterized in that: One end of the rotating rod (37) is connected to the output end of the motor, and the angle of the fine filter plate (33) is set to an inclination angle.

5. A wastewater treatment device for environmental engineering according to claim 4, characterized in that: The inner wall of the sewage treatment tank (1) is provided with an auxiliary device for assisting the sewage treatment inside the sewage treatment tank (1). The auxiliary device includes a rotating shaft (41), which rotates through the inner wall of the sewage treatment tank (1). A spiral stirring plate (42) is fixedly installed on the circumferential surface of the rotating shaft (41). An activated carbon plate (43) is fixedly installed on the inner wall of the pretreatment cylinder (2). A self-cleaning scraper (44) is fixedly installed on the circumferential surface of the rotating shaft (41). A striking rod (45) is fixedly installed at the bottom of the fine filter plate (33). A receiving plate (46) is fixedly installed on the circumferential surface of the rotating shaft (41). A fixing plate (47) is fixedly installed on the surface of the rotating shaft (41).

6. A wastewater treatment device for environmental engineering according to claim 5, characterized in that: One end of the rotating shaft (41) is connected to the output end of the motor, and the angle of the self-cleaning scraper (44) is set to an inclination angle.

7. A wastewater treatment device for environmental engineering according to claim 6, characterized in that: The self-cleaning scraper (44) is rotatably connected to the activated carbon plate (43), and the striking rod (45) is provided with an arc surface two for contacting and striking the striking plate (46) at one end near the striking plate (46).

8. A wastewater treatment device for environmental engineering according to claim 7, characterized in that: The bottom of the fixed plate (47) is provided with a feeding device for feeding the inside of the sewage treatment tank (1). The feeding device includes a scraper (51), which is fixedly installed at the bottom of the fixed plate (47). An adding cylinder (52) is rotatably installed on the surface of the scraper (51). A rotating rod (53) is fixedly installed at the bottom of the adding cylinder (52). A contact wheel (54) is fixedly installed at the end of the rotating rod (53) away from the adding cylinder (52). A discharge ring (55) is fixedly passed through the circumference of the adding cylinder (52). A storage cylinder (56) is fixedly installed on the circumference of the rotating shaft (41). A conveying pipe (57) is fixedly passed through the surface of the storage cylinder (56).

9. A wastewater treatment device for environmental engineering according to claim 8, characterized in that: The scraper plate (51) is shaped with an arc surface that fits against the inner wall of the sewage treatment tank (1), and the rotating rod (53) rotates through the scraper plate (51).

10. A wastewater treatment device for environmental engineering according to claim 9, characterized in that: The contact wheel (54) contacts the inner wall of the sewage treatment tank (1), the surface of the discharge ring (55) is provided with a nozzle, and the end of the conveying pipe (57) away from the storage cylinder (56) is fixedly inserted through the top of the scraper plate (51).

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