A sewage treatment equipment for environmental protection engineering

Abstract

The invention discloses a sewage treatment device for environmental protection engineering, which relates to the technical field of sewage treatment, and comprises a sewage treatment cylinder, wherein a bracket frame is installed on the outer wall of the sewage treatment cylinder, a driving member is installed on the upper part of the interior of the sewage treatment cylinder, and the driving member is specifically a driving motor, a drainage ring is installed on the lower part of the interior of the sewage treatment cylinder, a delivery pipe is connected to the upper part of the sewage treatment cylinder, and a discharge pipe is connected to the lower part of the sewage treatment cylinder. When liquid passes through a spring ring group, a certain degree of turbulence is formed, which enhances the diffusion and mixing effect of impurities in the sewage, and part of the sewage flowing in the form of curved corners between the rectangular long plate and the rectangular short plate generates a significant impact effect by merging with the sewage flowing vertically downward, further accelerating the flow speed of the sewage, and the dynamic change of this acceleration further promotes the effective separation and removal of pollutants in the sewage, so that it flows directly downward along the mixing cylinder, thereby significantly improving the sewage treatment efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to sewage treatment equipment for environmental protection engineering. Background Art

[0002] Sewage treatment equipment can effectively treat domestic sewage, industrial wastewater and other types of sewage, remove or degrade harmful substances in them, ensure the sustainable use of water resources, and remove or reduce pollutants in them to a level that meets emission standards by treating sewage, thereby reducing pollution to the environment and protecting the health of the aquatic ecosystem.

[0003] In a Chinese patent with a patent publication number of CN117923624A, a sewage treatment equipment for environmental protection engineering is disclosed, including a uniform mechanism, which is arranged on the top of a fixed seat, used to hold sewage, drive a stirring structure to stir the sewage, and pour flocculant into the top of the uniform mechanism. As the stirring structure rotates, the flocculant and the sewage are fully mixed. The uniform mechanism includes a spherical shell. In the sewage treatment equipment for environmental protection engineering, a feeding component is close to the edge of the saving mechanism. When the feeding component adds flocculant to the inside of the water body, the flocculant flows close to the edge of the saving mechanism, so that the flocculant and the large volume of sewage are evenly mixed;

[0004] However, the following defects still exist in the specific use of the comparative documents:

[0005] 1. In the comparative documents, the flocculant is directly discharged into the sewage treatment equipment. This method cannot ensure that the flocculant is accurately added according to the amount of sewage discharged, resulting in excessive or insufficient flocculant addition. In addition, although the continuous rotation and stirring of the stirring rod and other additional components can make the flocculant and sewage mixed more evenly and fully, this will increase the overall design cost of the equipment and increase the resistance to the normal rotation of the stirring shaft;

[0006] 2. In the reference document, the motor and the swing rod are swung by an electric turntable, and moved toward the expansion assembly driven by the scraper assembly. The design and coordination of these assemblies are all located inside the sewage treatment equipment, which greatly increases the processing space occupied by the components inside the equipment, is not conducive to the compact design and space optimization of the equipment, and makes maintenance and overhaul work difficult, increasing maintenance costs and time;

[0007] In view of this, the present invention proposes a sewage treatment equipment for environmental protection engineering to make up for and improve the deficiencies of the prior art. Summary of the invention

[0008] In order to solve the above technical problems, the present invention provides a sewage treatment equipment for environmental protection engineering to solve the technical problems raised in the above background technology.

[0009] To achieve the above purpose, the technical solution adopted by the present invention is: a sewage treatment equipment for environmental protection engineering, including a sewage treatment cylinder, a bracket frame is installed on the outer wall of the sewage treatment cylinder, a driving member is installed on the upper part of the interior of the sewage treatment cylinder, and the driving member is specifically a driving motor, a drainage ring is installed on the lower part of the interior of the sewage treatment cylinder, a conveying pipe is connected to the upper part of the sewage treatment cylinder, and a discharge pipe is connected to the lower part of the sewage treatment cylinder, a sewage mixing mechanism is arranged inside the sewage treatment cylinder, and a controlled discharge mechanism is arranged on the outer wall of the sewage treatment cylinder;

[0010] Also includes:

[0011] The sewage mixing mechanism is used to fully mix the sewage while reducing the rotation resistance;

[0012] The controlled discharge mechanism is used to discharge the flocculant quantitatively within a controllable range.

[0013] Furthermore, the sewage mixing mechanism includes a separation double buckle fixedly connected to the inner wall of the sewage treatment cylinder, the inner wall of the separation double buckle is fixedly connected with a barrier grille, the inner side wall of the separation double buckle is rotatably connected with a mixing cylinder, the inner side wall of the mixing cylinder is evenly fixedly connected with a rectangular long plate, the sewage treatment cylinder is rotatably connected with a through shaft inside, the outer wall of the through shaft is evenly fixedly connected with a spring ring group, the outer wall of the spring ring group is evenly fixedly connected with a rectangular short plate, and the outer wall of the through shaft is fixedly connected with a conical seat at the position of the separation double buckle.

[0014] Furthermore, the separation double buckle is composed of two funnel rings spliced ​​together, and the overall shape is expanded on the upper and lower sides and contracted in the middle.

[0015] Furthermore, the barrier grille as a whole is composed of a combination of five rhombus edges, and the rhombus edges in the barrier grille are distributed in a staggered and parallel manner.

[0016] Furthermore, the rectangular long plate and the rectangular short plate have equal widths, the length of the rectangular short plate is half of the length of the rectangular long plate, and the rectangular long plate and the rectangular short plate are distributed in a parallel and inclined manner.

[0017] Furthermore, the quantity controlled discharge mechanism includes an active magnetic disk fixedly connected to the output shaft end of the driving member, a driven magnetic disk is installed directly below the active magnetic disk, the driven magnetic disk is fixedly connected to the through shaft, the outer wall of the sewage treatment cylinder is sleeved with a storage bin, the storage bin is symmetrically connected with a conveying curved pipe below, the end of the conveying curved pipe away from the storage bin is connected with a preparation cylinder, and a quantity controlled valve is installed inside the preparation cylinder.

[0018] Furthermore, magnets are evenly fixedly connected to the lower surface of the active disk, and magnets are evenly fixedly connected to the upper surface of the driven disk. The magnets on the surfaces of the active disk and the driven disk are distributed with positive and negative poles isolated from each other, and the ratio of the magnets on the surfaces of the active disk and the driven disk is four to one.

[0019] Furthermore, flocculants are stored inside the storage bin and inside the preparation cylinder, a one-way valve is installed inside the delivery curved pipe near one end of the storage bin, and the quantity control valve and the one-way valve are initially in a closed state.

[0020] Furthermore, the outer wall of the driven magnetic disk is fixedly connected with a cylindrical shaft, and the trigger switch of the quantity control valve is located on the movement path of the cylindrical shaft on the outer wall of the driven magnetic disk.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The device uses a mixing cylinder to form a space that is connected from top to bottom inside the sewage treatment cylinder. When the liquid passes through the spring ring group, a certain degree of turbulence is formed, which enhances the diffusion and mixing effect of impurities in the sewage. The part of the sewage flowing in the form of a curved corner between the rectangular long plate and the rectangular short plate merges with the sewage flowing vertically downward, producing a significant impact effect, further accelerating the flow speed of the sewage. This accelerated dynamic change further promotes the effective separation and removal of pollutants in the sewage, allowing it to flow directly downward along the mixing cylinder, thereby significantly improving the sewage treatment efficiency;

[0023] (2) The device can achieve the dual goals of sewage mixing and impurity separation only through the positional relationship and shape coordination between simple structures. Compared with the existing stirring rod with a branch design on the outer wall of the stirring shaft, when the mixing drum rotates in the sewage, the smooth outer wall significantly reduces the friction resistance with the sewage, thereby reducing the energy demand during the rotation process, so that the torque demand of the mixing drum during rotation is reduced, thereby reducing the vibration and noise of the equipment itself caused by excessive rotation, improving the mechanical stability of the equipment and the smoothness of operation, and reducing the equipment wear and maintenance costs caused by vibration;

[0024] (3) The use of the inclined outer wall of the separation double buckle and the conical seat provides an efficient guiding and capturing function for impurities and pollutants. The shape of the separation double buckle, which expands up and down and contracts in the middle, not only increases the contact area between the pollutants and the inner wall of the treatment tube, but also guides the impurities to slide down along the conical seat and the inclined outer wall of the separation double buckle through fluid guidance, reducing the random floating and diffusion of pollutants, and effectively avoiding the problem of easy re-suspension of pollutants in traditional sewage treatment. The shape of the conical seat promotes the downward vortex effect of the fluid when passing through the separation double buckle, increasing the rotational power of the fluid, thereby enhancing the guiding and capturing ability of impurities;

[0025] (4) When the impurities and pollutants want to float upward due to the rotational force, the staggered distribution of the isolation fence and the narrow shape in the middle of the separation double buckle have a dual limiting effect, which increases the resistance and complexity of the fluid flow, prompting the fluid to generate more eddies and disturbances when passing through, thereby increasing the restriction effect on the impurities and pollutants, effectively preventing the pollutants from floating again, and achieving efficient secondary capture;

[0026] (5) A drive transmission based on magnetic field interaction is formed by relying on the active magnetic disk and the driven magnetic disk. Since there is no contact between the motor output shaft and the through shaft, the energy loss and wear caused by the rigid contact between the machines are reduced. When the load on the through shaft exceeds its limit value, this contactless magnetic transmission drive will also slip to achieve overload protection, causing slippage between the active magnetic disk and the driven magnetic disk, that is, the through shaft stops rotating or the speed drops significantly, thereby avoiding the risk of damage due to overload rotation;

[0027] (6) The rotation of the driven magnetic disk intermittently triggers the switch of the control valve to achieve automatic addition of flocculants. This design does not require an additional power source, reduces energy consumption and maintenance costs, and ensures the accuracy and stability of flocculant addition. Secondly, the automatic flocculant addition mechanism helps to form more stable and dense flocs, thereby improving the sedimentation rate and water purification effect, while reducing the use of chemicals and reducing treatment costs; BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the three-dimensional structure of the sewage mixing mechanism of the present invention;

[0030] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the mixing cylinder of the present invention;

[0031] Figure 4 For the present invention Figure 3 A is a partial enlarged schematic diagram of the three-dimensional structure;

[0032] Figure 5 It is a schematic diagram of the three-dimensional structure of the separated double buckle parts of the present invention;

[0033] Figure 6 This is an exploded view of separating the double buckle parts of the present invention;

[0034] Figure 7 It is a schematic diagram of the three-dimensional structure of the controlled discharge mechanism of the present invention;

[0035] Figure 8 It is a schematic diagram of the three-dimensional structure of the active disk and the driven disk of the present invention;

[0036] Fig. 9 It is a schematic diagram of the internal three-dimensional structure of the preparation cylinder of the present invention.

[0037] The numbers in the figure are: 1. sewage treatment cylinder; 11. bracket frame; 12. driving part; 13. drainage ring; 2. sewage mixing mechanism; 21. separation double buckle; 22. barrier grille; 23. conical seat; 24. mixing cylinder; 25. rectangular long plate; 26. through shaft; 27. spring ring group; 28. rectangular short plate; 3. quantity control discharge mechanism; 31. active magnetic disk; 32. driven magnetic disk; 33. storage bin; 34. delivery curved pipe; 35. preparation cylinder; 36. quantity control valve. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention;

[0039] Embodiments of the present invention

[0040] Please refer to Figure 1 As shown, a sewage treatment equipment for environmental protection engineering includes a sewage treatment cylinder 1, a bracket frame 11 is installed on the outer wall of the sewage treatment cylinder 1, a driving member 12 is installed on the upper part of the sewage treatment cylinder 1, and the driving member 12 is specifically a driving motor. A drainage ring 13 is installed on the lower part of the sewage treatment cylinder 1, a conveying pipe is connected to the upper part of the sewage treatment cylinder 1, and a discharge pipe is connected to the lower part of the sewage treatment cylinder 1. The characteristics are: a sewage mixing mechanism 2 is arranged inside the sewage treatment cylinder 1, and a controlled discharge mechanism 3 is arranged on the outer wall of the sewage treatment cylinder 1;

[0041] Please refer to Figure 2 - Figure 4 As shown, the sewage mixing mechanism 2 includes a separation double buckle 21 fixedly connected to the inner wall of the sewage treatment cylinder 1, the inner wall of the separation double buckle 21 is fixedly connected with a barrier grille 22, the inner side wall of the separation double buckle 21 is rotatably connected with a mixing cylinder 24, the inner side wall of the mixing cylinder 24 is evenly fixedly connected with a rectangular long plate 25, a through shaft 26 is rotatably connected inside the sewage treatment cylinder 1, the outer wall of the through shaft 26 is evenly fixedly connected with a spring ring group 27, the outer wall of the spring ring group 27 is evenly fixedly connected with a rectangular short plate 28, and the outer wall of the through shaft 26 is fixedly connected with a conical seat 23 at the position corresponding to the separation double buckle 21

[0042] Specifically, part of the sewage flowing in the form of curved corners between the rectangular long plate 25 and the rectangular short plate 28 merges with the sewage flowing vertically downward, producing a significant impact effect, further accelerating the flow speed of the sewage. This accelerated dynamic change further promotes the effective separation and removal of pollutants in the sewage, allowing it to flow directly downward along the mixing barrel 24, thereby significantly improving the sewage treatment efficiency;

[0043] Please refer to Figure 5 - Figure 6 As shown, the separation double buckle 21 is composed of two funnel rings spliced ​​together, and the overall shape is expanded on the upper and lower sides and contracted in the middle. The barrier grille 22 is composed of five rhombus edges, and the rhombus edges in the barrier grille 22 are staggered and parallel. The width of the rectangular long plate 25 and the rectangular short plate 28 are equal, the length of the rectangular short plate 28 is half of the length of the rectangular long plate 25, and the rectangular long plate 25 and the rectangular short plate 28 are parallel and inclined.

[0044] Specifically, the use of the inclined outer wall of the separation double buckle 21 and the conical seat 23 provides an efficient guiding and capturing function for impurities and pollutants. The shape of the separation double buckle 21 that expands up and down and contracts in the middle not only increases the contact area between the pollutants and the inner wall of the treatment tube, but also guides the impurities to slide down along the conical seat 23 and the inclined outer wall of the separation double buckle 21 through fluid guidance, thereby reducing the random floating and diffusion of pollutants.

[0045] Please refer to Figure 7 - Figure 8 As shown, the controlled discharge mechanism 3 includes an active magnetic disk 31 fixedly connected to the output shaft end of the driving member 12, a driven magnetic disk 32 is installed directly below the active magnetic disk 31, and the driven magnetic disk 32 is fixedly connected to the through shaft 26. A storage bin 33 is sleeved on the outer wall of the sewage treatment cylinder 1, and a delivery curved pipe 34 is symmetrically connected to the storage bin 33 below. The ends of the delivery curved pipes 34 away from the storage bin 33 are connected to a preparation barrel 35, and a control valve 36 is installed inside the preparation barrel 35.

[0046] Specifically, the automatic addition of flocculants is realized. This design does not require an additional power source, reduces energy consumption and maintenance costs, and ensures the accuracy and stability of flocculant addition. Secondly, the automatic flocculant addition mechanism helps to form more stable and dense flocs, thereby improving the sedimentation rate and water purification effect;

[0047] Please refer to Figure 8 - Fig. 9As shown, the lower surface of the active magnetic disk 31 is evenly fixedly connected with magnets, and the upper surface of the driven magnetic disk 32 is evenly fixedly connected with magnets, the magnets on the surfaces of the active magnetic disk 31 and the driven magnetic disk 32 are distributed with positive and negative poles isolated from each other, and the ratio of the magnets on the surfaces of the active magnetic disk 31 and the driven magnetic disk 32 is four to one, the inside of the storage bin 33 and the inside of the preparation cylinder 35 are both stored with flocculants, a check valve is installed inside the delivery curved pipe 34 near one end of the storage bin 33, the control valve 36 and the check valve are initially in a closed state, the outer wall of the driven magnetic disk 32 is fixedly connected with a cylindrical shaft, and the trigger switch of the control valve 36 is located on the movement path of the cylindrical shaft on the outer wall of the driven magnetic disk 32;

[0048] Specifically, since there is no contact between the motor output shaft and the through shaft 26, the energy loss and wear caused by the rigid contact between the machines are reduced, and when the load on the through shaft 26 exceeds its limit value, this non-contact form of magnet transmission drive will also slip to achieve overload protection;

[0049] The following are the complete usage steps and working principles of the above embodiment:

[0050] The sewage mixing mechanism 2 is used to fully mix sewage under the premise of reducing rotation resistance. When used specifically:

[0051] like Figure 1 and Figure 2 As shown, a space communicating with each other from top to bottom is formed inside the sewage treatment cylinder 1 by using the mixing cylinder 24, so as to ensure that the sewage can flow smoothly from top to bottom. When the mixing cylinder 24 and the through shaft 26 are both rotating, the two are relatively stationary. Figure 3 and Figure 4 As shown, when the solution in the mixing barrel 24 flows from top to bottom, a part of the liquid flows through the spring ring group 27, and the other part flows between the rectangular long plate 25 and the rectangular short plate 28 in the form of a curved corner. This different flow mode increases the turbulence of the liquid, which helps to improve the mixing efficiency and the reaction contact area. When the curved sewage merges into the vertically downward flowing sewage, it will impact it and accelerate the flow speed of the sewage, which will help to form a stronger circulation flow and accelerate the transfer and reaction process of the substance. At this time, the speed of the sewage flowing inside the mixing barrel 24 is greater than that outside. This speed difference will promote the formation of a flow cycle inside and outside under the action of gravity, and then continuously input the sewage from the top and output it efficiently from the bottom, so as to achieve a good sewage treatment effect, and form a flow cycle inside and outside the mixing barrel 24, continuously inputting the sewage from the top of the mixing barrel 24 and outputting it from the bottom;

[0052] When the sewage passes through the spring ring group 27, a certain degree of turbulence is formed, which enhances the diffusion and mixing effect of the substances. The part of the sewage flowing in the form of curved corners between the rectangular long plate 25 and the rectangular short plate 28 merges with the sewage flowing vertically downward, which produces a significant impact effect and further accelerates the flow speed of the sewage. This accelerated flow mixing method not only optimizes the fluid dynamics performance, but also promotes the effective separation and removal of pollutants in the sewage, so that the impurities and pollutants in the sewage flow directly downward along the mixing cylinder 24, which significantly improves the sewage treatment efficiency.

[0053] like Figure 5 As shown, the bottom of the sewage treatment cylinder 1 is designed to be composed of two funnel rings spliced ​​together, and the overall separation double buckle 21 is in the shape of expansion on the upper and lower sides and contraction in the middle, and the outer wall of the through-shaft 26 is fixedly connected with a conical seat 23 in the middle, so when the impurities and pollutants in the sewage flow downward, they can slide down along the conical seat 23 and the inclined outer wall of the separation double buckle 21, and then cooperate with the barrier grille 22 composed of five rhombus edges as a whole. The rhombus edges in the barrier grille 22 are staggered and distributed in parallel, which increases the complexity of the fluid flow path, and effectively hinders the impurities and pollutants trying to float upward through the space restriction between the rhombus edges. Therefore, when the impurities and pollutants want to float upward due to the rotational force, they can be double-limited and isolated by the narrow shape in the middle of the barrier grille 22 and the separation double buckle 21;

[0054] The controlled discharge mechanism 3 for quantitatively discharging flocculants within a controllable range is specifically used as follows:

[0055] like Figure 7 and Figure 8As shown, the active disk 31 is fixedly connected to the output shaft end of the driving member 12, and the driven disk 32 is fixedly connected to the upper surface of the through shaft 26, and the two are in the same vertical plane and correspond to each other. Since the lower surface of the active disk 31 is evenly fixedly connected with magnets, and the upper surface of the driven disk 32 is evenly fixedly connected with magnets, and the magnets on the surfaces of the active disk 31 and the driven disk 32 are distributed with positive and negative poles isolated from each other, when the active disk 31 rotates synchronously with the output shaft of the driving member 12, the active disk 31 will drive it to rotate in the opposite direction according to the distribution of the magnet pieces on the surface of the driven disk 32, and according to the ratio of the number of magnet pieces on the surface of the active disk 31 to the number of magnet pieces on the surface of the driven disk 32 is four to one, and the active disk 31 is The radius ratio of the magnet sheet on the surface of the active disk 31 to the magnet sheet on the surface of the driven disk 32 is one to four, so the speed ratio between the active disk 31 and the driven disk 32 is just the inverse of the ratio of the number of magnet sheets on their surfaces, that is, one rotation of the active disk 31 drives the driven disk 32 to rotate four times. This drive transmission based on the interaction of the magnetic field formed by the active disk 31 and the driven disk 32 reduces the energy loss and wear caused by the rigid contact between the machines because there is no contact between the motor output shaft and the through shaft 26. Moreover, when the load on the through shaft 26 exceeds its limit value, this contactless form of magnet transmission drive will also slip to achieve overload protection, thereby avoiding the risk of damage due to overload rotation.

[0056] like Figure 8 and Fig. 9 As shown, the outer wall of the driven disk 32 is fixedly connected with a cylindrical shaft, and the trigger switch of the control valve 36 is located in the movement path of the cylindrical shaft of the outer wall of the driven disk 32. Therefore, when the driven disk 32 keeps rotating, the cylindrical shaft of its outer wall will intermittently resist the control switch above the control valve 36. Since flocculants are stored in both the storage bin 33 and the preparation cylinder 35, and a one-way valve is installed in the delivery curved pipe 34 near one end of the storage bin 33, and the control valve 36 and the one-way valve are initially in a closed state, when the cylindrical shaft resists the control switch, the flocculants in the preparation cylinder 35 will flow downward along the delivery curved pipe 34 to the inside of the sewage treatment cylinder 1, and when the cylindrical shaft After the column axis and the control switch are completely offset, the control switch on the outer wall of the control valve 36 will return to its original position. At this time, according to the change in pressure difference after the flocculant in the preparation tube 35 is discharged, the storage bin 33 will squeeze the one-way valve and then re-deliver the flocculant to the preparation tube 35 through the delivery curved pipe 34 until the flocculant inside the preparation tube 35 is filled. In this way, automatic addition of flocculant is achieved. This design does not require an additional power source, reduces energy consumption and maintenance costs, and ensures the accuracy and stability of flocculant addition. Secondly, the automatic flocculant addition mechanism helps to form a more stable and dense floc, thereby improving the sedimentation rate and water purification effect.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sewage treatment device for environmental protection engineering, comprising a sewage treatment cylinder (1), the outer wall of the sewage treatment cylinder (1) is installed with a support frame (11), a driving member (12) is installed at the upper part of the interior of the sewage treatment cylinder (1), the driving member (12) is specifically a driving motor, a drainage ring (13) is installed at the lower part of the interior of the sewage treatment cylinder (1), the upper part of the sewage treatment cylinder (1) is connected with a conveying pipe, and the lower part of the sewage treatment cylinder (1) is connected with a discharge pipe, characterized in that: The sewage treatment cylinder (1) is provided with a sewage mixing mechanism (2) inside, and the outer wall of the sewage treatment cylinder (1) is provided with a controlled discharge mechanism (3); Also includes: The sewage mixing mechanism (2) is used to fully mix the sewage while reducing the rotation resistance; The controlled discharge mechanism (3) is used to discharge the flocculant quantitatively within a controllable range; The sewage mixing mechanism (2) comprises a separation double buckle (21) fixedly connected to the inner wall of the sewage treatment cylinder (1), the inner wall of the separation double buckle (21) is fixedly connected to a barrier grille (22), the inner side wall of the separation double buckle (21) is rotatably connected to a mixing cylinder (24), the inner side wall of the mixing cylinder (24) is evenly fixedly connected to a rectangular long plate (25), the sewage treatment cylinder (1) is internally rotatably connected to a through shaft (26), the outer wall of the through shaft (26) is evenly fixedly connected to a spring ring group (27), the outer wall of the spring ring group (27) is evenly fixedly connected to a rectangular short plate (28), and the outer wall of the through shaft (26) is fixedly connected to a conical seat (23) at a position corresponding to the separation double buckle (21); The separation double buckle (21) is composed of two funnel rings spliced ​​together, and the overall shape is expanded at the upper and lower sides and contracted in the middle; The barrier grille (22) is composed of five rhombus-shaped edges, and the rhombus-shaped edges in the barrier grille (22) are distributed in a staggered and parallel manner; The rectangular long plate (25) and the rectangular short plate (28) have the same width, the length of the rectangular short plate (28) is half the length of the rectangular long plate (25), and the rectangular long plate (25) and the rectangular short plate (28) are distributed in a parallel and inclined manner.

2. The sewage treatment equipment for environmental protection engineering according to claim 1 is characterized by: The controlled discharge mechanism (3) comprises an active magnetic disk (31) fixedly connected to the output shaft end of the driving member (12), a driven magnetic disk (32) being installed directly below the active magnetic disk (31), the driven magnetic disk (32) being fixedly connected to the through shaft (26), a storage bin (33) being sleeved on the outer wall of the sewage treatment cylinder (1), a conveying curved pipe (34) being symmetrically connected below the storage bin (33), the conveying curved pipe (34) being connected to a reserve cylinder (35) at one end away from the storage bin (33), and a controlled discharge valve (36) being installed inside the reserve cylinder (35).

3. The sewage treatment equipment for environmental protection engineering according to claim 2 is characterized by: The lower surface of the active magnetic disk (31) is evenly fixedly connected with magnets, and the upper surface of the driven magnetic disk (32) is evenly fixedly connected with magnets. The magnets on the surfaces of the active magnetic disk (31) and the driven magnetic disk (32) are distributed with positive and negative poles isolated from each other, and the ratio of the magnets on the surfaces of the active magnetic disk (31) and the driven magnetic disk (32) is four to one.

4. The sewage treatment equipment for environmental protection engineering according to claim 2 is characterized by: The storage bin (33) and the preparation cylinder (35) both store flocculants, a one-way valve is installed inside the delivery curved pipe (34) near one end of the storage bin (33), and the control valve (36) and the one-way valve are initially in a closed state.

5. The sewage treatment equipment for environmental protection engineering according to claim 2 is characterized by: The outer wall of the driven magnetic disk (32) is fixedly connected with a cylindrical shaft, and the trigger switch of the control valve (36) is located on the movement path of the cylindrical shaft on the outer wall of the driven magnetic disk (32).

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