CN108640168B

CN108640168B - Drainage mechanism suitable for sewage treatment

Info

Publication number: CN108640168B
Application number: CN201810339477.0A
Authority: CN
Inventors: 鲁仕宝; 鲍海君; 王直民; 彭毅; 李蔚
Original assignee: Zhejiang University of Finance and Economics
Current assignee: Zhejiang University of Finance and Economics
Priority date: 2018-04-16
Filing date: 2018-04-16
Publication date: 2021-07-23
Anticipated expiration: 2038-04-16
Also published as: CN108640168A

Abstract

The invention belongs to the technical field of hydraulic engineering, and mainly relates to a drainage mechanism suitable for sewage treatment, which comprises a gate pier and a gate arranged in the gate pier, wherein the upper end of the gate pier is provided with a first mounting hole, the upper end of the gate is provided with a second mounting hole, mounting shafts are arranged in the first mounting hole and the second mounting hole in a penetrating manner, the gate is provided with an arc-shaped strip, a support column is hinged on the gate, the free end of the support column is provided with a floating block, the top end of the support column is provided with transmission teeth at equal intervals, the gate pier is provided with a gear mounting column, the bottom end of the gear mounting column is provided with a gear, the gear is meshed with the transmission teeth, the gate pier is provided with a mounting cavity, a winding wheel is arranged on a gear shaft, a suspension member is arranged in the mounting cavity, a suspension rope is fixedly arranged on the winding wheel, and is fixedly connected with the suspension member, the drainage mechanism has a simple structure and low cost, can prevent the gate from vibrating and flapping during flood discharge, prolongs the service life of the gate pier and has better corrosion resistance.

Description

Drainage mechanism suitable for sewage treatment

Technical Field

The invention belongs to the technical field of hydraulic engineering, and particularly relates to a drainage mechanism suitable for sewage treatment.

Background

The flap gate can realize automatic water level control and is mainly used for intercepting or draining water flow in reservoirs, rivers, reservoirs and the like.

The flap gate which is widely applied at present is a hydraulic automatic control flap gate, the aim of regulating and controlling the water level is achieved by additionally arranging a damping feedback system by utilizing mutual balance of hydraulic power and gate weight, and when the upstream water level rises, the gate gradually opens and discharges around a transverse shaft; on the contrary, the water level of the upstream decreases, and the gate gradually closes to store water, so that the water level of the upstream is always kept in the range of the design requirement.

The existing hydraulic automatic control flap gate has two types, namely a vertical water retaining flap gate and a pretilt angle connecting rod roller gate, wherein the vertical water retaining flap gate adopts a double-pivot connecting rod mode, and can basically meet engineering requirements in the actual operation process. However, the gate has some defects, mainly the phenomenon of small-opening vibration flapping is easy to occur under certain hydraulic conditions, although the safety of the whole gate dam is not affected in a short period, the long-term small-opening vibration flapping can cause the fatigue damage of the bottom of the flap gate and the fixed dam, so that the water leakage of the gate dam is serious until the damage of the whole flap gate dam engineering is caused. The roller connecting rod type flap gate is a gate with double supporting points and connecting rods, and consists of a panel, supporting legs, buttresses, rollers, connecting rods and other parts, and the gate is automatically controlled to be opened and closed under the action of water power according to the change of the water level of the gate;

meanwhile, the flap gate is soaked in water for a long time, the gate body is easily corroded by water, the service life of the gate is influenced, and particularly, the situation that the gate for the sewage treatment reservoir is corroded in the environment treatment process is serious.

Disclosure of Invention

Based on the problems mentioned in the background art, the invention provides a drainage mechanism suitable for sewage treatment, which has a simple structure and low cost, can prevent the gate from vibrating and flapping during flood discharge, prolongs the service life of the gate pier, and has better corrosion resistance.

The technical scheme adopted by the invention is as follows:

a drainage mechanism suitable for sewage treatment comprises a gate pier and a gate arranged in the gate pier, wherein the gate is an anticorrosive gate, a first mounting hole is formed in the upper end of the gate pier, a second mounting hole is formed in the upper end of the gate, mounting shafts are arranged in the first mounting hole and the second mounting hole in a penetrating mode, arc-shaped strips are arranged on two sides of the bottom end of the gate, an arc-shaped guide rail is arranged on the lower portion of the gate pier, a circle where the arc-shaped guide rail and the arc-shaped strips are located and a circle where the first mounting hole is located are concentric circles, the lower end face of the arc-shaped strip is in tangential contact with the upper end face of the arc-shaped guide rail, a support column is hinged to the gate, a floating block is arranged at the free end of the support column, transmission teeth are arranged at the top end of the support column at equal intervals, a gear mounting column is arranged on the gate pier, a gear is arranged at the bottom end of the gear mounting column, the gear is meshed with the transmission teeth, a mounting cavity is formed in one side of the gate pier, gear shaft one end of the gear is worn out the gear erection column and is passed the installation cavity and install on the gate pier, the gear shaft is in installation cavity fixed mounting has the reel, the fixed pulley is installed to the inside upper end of installation cavity, be equipped with in the installation cavity and suspend the piece in midair, fixed mounting has the string rope on the reel, it passes the fixed pulley and suspends a fixed connection in midair to hang the rope free end, it is in the state of suspending in midair to suspend the piece in midair when gate natural drooping gate pier closes, the piece that suspends in midair descends when gate rotation gate pier is opened.

Further, all install the bearing in first mounting hole and the second mounting hole, the installation axle is worn to locate in the bearing.

Further, the gate bottom end face is of an arc structure, the bottom end face arc and the arc strip bottom end arc are concentric arcs, the gate pier is provided with an arc groove at the corresponding position of the gate bottom end, and the arc where the arc groove arc face is located and the arc where the arc guide rail upper end face is located are concentric arcs.

Further, the gate pier is equipped with a supporting bench in arc guide rail bottom integrated into one piece, arc guide rail bottom embedding is in a supporting bench.

Furthermore, the support column is of a cuboid structure, a chamfering structure is arranged at the edge of the top end of the support column, and the transmission teeth on the support column are of a V-shaped structure.

Furthermore, the top surface of the transmission teeth on the supporting column is parallel to the upper end surface of the supporting column, and the tooth top of the surface of the gear is provided with a notch matched with the top end of the supporting column.

Further, the gate comprises a gate door plate and a screen plate embedded on the gate door plate, wherein the gate door plate and the screen plate are both coated with a water-based anti-corrosion coating, and the water-based anti-corrosion coating is formed by curing a water-based anti-corrosion coating.

Further, the preparation raw materials of the water-based anticorrosive coating comprise:

70-100 parts of stainless steel scale, 350ml of epoxidized soybean oil, 8-15 parts of nano-zinc oxide, 15-30 parts of zinc-aluminum alloy scale, 350 parts of vinyl chloride-vinyl acetate resin, 0.5-0.7 part of defoaming agent, 30-55 parts of coupling agent, 7-12 parts of anti-settling agent, 8-12 parts of tourmaline powder, 220 parts of attapulgite 150, 20-40 parts of bentonite, 20-50 parts of nano silicon dioxide, 150ml of butyl acetate solution, 5-10ml of N, N-dimethylbenzylamine, 90-150ml of methacrylic acid-2-ethyl tert-butyl triester and 40-70ml of trimethylolpropane.

The preparation method of the water-based anticorrosive coating comprises the following steps:

performing ultrasonic dispersion on the vinyl chloride-vinyl acetate copolymer to prepare suspension, heating epoxy soybean oil, adding nano-scale zinc oxide and polymerization inhibitor N, N-dimethylbenzylamine, slowly adding the vinyl chloride-vinyl acetate copolymer suspension while stirring, and stirring at a constant temperature to obtain esterified vinyl chloride-vinyl acetate copolymer, wherein the vinyl chloride-vinyl acetate copolymer contains carboxyl functional groups, the activity of the carboxyl functional groups is high, and the modification of the vinyl chloride-vinyl acetate copolymer can increase the thermal stability of the vinyl chloride-vinyl acetate copolymer and the adhesiveness of the vinyl chloride-vinyl acetate copolymer to a metal gate;

adding a butyl acetate solution into esterified vinyl chloride-vinyl acetate resin, performing ultrasonic dispersion to form a suspension, adding a mixed solution of 2-ethyl tert-butyl methacrylate and trimethylolpropane, uniformly stirring, heating, adding attapulgite, and performing ultraviolet radiation at a heating and stirring speed to obtain a mixed solution;

the vinyl chloride-vinyl acetate copolymer resin generates intermolecular and intramolecular crosslinking reaction under the radiation of ultraviolet light, active groups of the vinyl chloride-vinyl acetate copolymer resin are self-closed, the nano zinc oxide only plays a role of catalysis in the esterification process and has extremely small particle size, the nano zinc oxide is irradiated by the ultraviolet light in the self-closing reaction process, negatively charged charges are decomposed, and positively charged cavities are left, so that the nano zinc oxide has extremely strong chemical activity, the attapulgite has larger surface area, surface physical and chemical structure and ionic state, and has physical adsorption and chemical adsorption, the physical adsorption is due to van der Waals force effect, the charges generated by isomorphous replacement of crystal chemical components of the attapulgite and loss of coordinated water are unbalanced, a formed electrical adsorption center is combined with the nano zinc oxide, and a zinc oxide-attapulgite composite material is generated in an organic solution, thereby improving the mechanical strength and the thermal stability of the coating and increasing the adhesive capacity to metal.

Heating and dissolving the mixed solution, adding a defoaming agent, uniformly mixing, adding tourmaline powder, bentonite and nano silicon dioxide, performing ball milling, adding stainless steel flakes, zinc-aluminum alloy flakes, a coupling agent and an anti-settling agent, and performing ultrasonic dispersion to obtain the anticorrosive coating;

the stainless steel flake paint is a multilayer sheet structure, can form parallel superimposed staggered thick films, produce special "maze" effect, not only cut the coating into many small spaces and reduce the contraction stress and expansion coefficient of the coating, but also force the medium to circuitously infiltrate, thus postponing the route and time of corrosive medium diffusion and invasion into the basal body, thus having excellent impermeability, impact resistance, wear resistance and corrosion resistance, and prolonging the service life of the coating, but only adding the stainless steel flake paint alone still has certain defects, changing the formula, adding the zinc-aluminum alloy flake in the stainless steel flake can make the corrosion-proof effect better, adding the tourmaline powder can absorb the peculiar smell brought by chemical reagent, and the hardness of the tourmaline is large, can also be used as a grinding additive in the grinding process and can be used as a filler together with bentonite, the tourmaline powder, The bentonite, the silicon dioxide, the zinc oxide-attapulgite and the like can be filled in micro-crack and micro-bubble fine spaces, and a compact thin layer is formed on the surface, so that the difference of the thermal expansion coefficient between the coating and the metal matrix is reduced, the shrinkage rate and the internal stress of the coating during hardening are reduced, the cracking and the stripping of the coating are inhibited, and the cohesive force and the impact resistance of the coating are improved. Therefore, the coating has more excellent corrosion resistance, light resistance, wear resistance, high temperature resistance, acid and alkali resistance and water resistance.

Further, the coating step of coating the water-based anticorrosive paint on the gate plate and the screen plate comprises the following steps:

coating of a first layer: derusting the surfaces of the gate plate and the screen plate, cleaning the surfaces by using an ethanol solution, treating the surfaces by using normal-pressure normal-temperature plasma equipment to remove trace organic matters on the surfaces and increase the adhesive force to the coating, naturally drying the surfaces by air, coating the surfaces of the gate plate and the screen plate with a first layer of water-based anticorrosive coating by spraying the coating at a high speed, and drying the surfaces for 2 to 3 hours at the temperature of between 50 and 60 ℃;

coating a second layer: coating the dried gate door plate and the dried screen plate which are coated with the first layer with a second layer of water-based anticorrosive paint through high-speed spraying paint, and drying for 4-5 hours at 70-80 ℃;

coating a third layer: and coating the third layer of the water-based anticorrosive coating on the gate plate and the screen plate which are dried and coated on the second layer by manual brush coating, and naturally drying to obtain the water-based anticorrosive coating.

The invention has the following beneficial effects:

the gate is hinged and installed in the gate pier and naturally droops under the action of the gravity of the gate to block a water body, the stored water is gradually increased, the pressure of the water body on the gate is gradually increased, when the stored water reaches a certain amount, the gate rotates around the installation shaft, the bottom end of the gate is separated from the gate pier to start flood discharge, the gate pier is provided with an arc-shaped strip which is in contact with the arc-shaped guide rail, the arc-shaped guide rail can play a certain blocking role on the gate through the arc-shaped strip during flood discharge, the shaking and flapping of the gate during flood discharge are weakened, meanwhile, the arc-shaped guide rail can play a radial support for the gate through the arc-shaped strip, the radial oscillation of the gate during flood discharge is prevented, and the service life of the gate pier is prolonged;

the arc-shaped strips are arranged on two sides of the bottom end of the gate, the impact force of the water body on the arc-shaped strips in the flood discharge process is smaller, so that the radial tension force generated by the gate on the mounting shaft and the gate pier is smaller due to the impact force generated by the water body on the gate in the flood discharge process, and the service lives of the mounting shaft and the gate pier are further prolonged on the premise of weakening the oscillation and shaking of the gate in the flood discharge process;

the gate is hinged with a support column, a floating block is arranged at the free end of the support column, a gear is arranged on the upper portion of the support column of the gate pier, the floating block is immersed in a water body under the limiting action of the gear, the free end of the support column can rise under the buoyancy action of the floating block to enable a transmission gear to be meshed with the gear, a winding wheel is arranged on a gear shaft, the winding wheel is connected with a hanging piece through a hanging rope, if the gate returns, the gear is inevitably driven to rotate through the transmission gear in the flood discharge process, the hanging piece is hung by overcoming the gravity of the hanging piece due to the rotation of the gear, therefore, the support column can generate a thrust force on the gate under the action of the hanging piece, and the gate hinged on the gate pier is prevented from shaking in the flood discharge process;

the surface of the gate is coated with an anticorrosive coating with strong adhesion, so that the corrosion resistance of the gate is enhanced, and the service life of the gate is prolonged.

Drawings

The invention can be further illustrated by the non-limiting examples given in the accompanying drawings:

FIG. 1 is a first schematic structural view of an embodiment of a drainage mechanism suitable for sewage treatment according to the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic structural view of a second embodiment of a drainage mechanism suitable for sewage treatment according to the present invention;

FIG. 4 is a schematic structural view of a gate pier in an embodiment of a drainage mechanism suitable for sewage treatment according to the present invention;

FIG. 5 is a schematic structural view of a gate in an embodiment of a drainage mechanism suitable for sewage treatment according to the present invention;

FIG. 6 is a schematic longitudinal sectional view of a gate pier installation cavity in an embodiment of a drainage mechanism for sewage treatment according to the present invention;

the main element symbols are as follows:

gate pier 1, first mounting hole 11, arc guide rail 12, gate 2, second mounting hole 21, arc strip 22, bracing piece 31, float piece 32, gear erection column 41, gear 42, gear shaft 51, reel 52, fixed pulley 53, string 54, suspension 55.

Detailed Description

In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.

As shown in fig. 1 to 6, a drainage mechanism suitable for sewage treatment comprises a gate pier 1 and a gate 2 installed in the gate pier 1, wherein the gate 2 is an anticorrosive gate, the upper end of the gate pier 1 is provided with a first installation hole 11, the upper end of the gate 2 is provided with a second installation hole 21, the first installation hole 11 and the second installation hole 21 are provided with an installation shaft 3 in a penetrating manner, the gate 2 is hinged to the gate pier 1 through the installation shaft 3, the gate pier 1 naturally droops under the action of gravity of the gate 2 to block a water body, and when a certain amount of water is accumulated in the water body and pressure on the gate 2 can overcome the gravity of the gate 2 to rotate the gate 2, so that the gate 2 is opened to start flood discharge; arc-shaped strips 22 are arranged on two sides of the bottom end of the gate 2, arc-shaped guide rails 12 are arranged on the lower portion of the gate 2 of the gate pier 1, the circle where the arc-shaped guide rails 12 and the arc-shaped strips 22 are located and the circle where the first mounting hole 11 is located are concentric circles, the lower end faces of the arc-shaped strips 22 are in tangential contact with the upper end faces of the arc-shaped guide rails 12, the arc-shaped strips 22 are always in contact with the arc-shaped guide rails 12 in the flood discharge process, the arc-shaped guide rails 12 play a certain role in stopping the return of the gate 2, and the shaking of the gate 2 can be reduced; the gate 2 is hinged with a supporting column 31, a floating block 32 is installed at the free end of the supporting column 31, transmission teeth are arranged at equal intervals at the top end of the supporting column 31, a gear installation column 41 is arranged on the gate pier 1, a gear 42 is arranged at the bottom end of the gear installation column 41, the gear 42 is meshed with the transmission teeth, an installation cavity 13 is formed in one side of the gear installation column 41 of the gate pier 1, one end of a gear shaft 51 of the gear 42 penetrates through the gear installation column 41 and penetrates through the installation cavity 13 to be installed on the gate pier 1, a winding wheel 52 is fixedly installed in the installation cavity 13 through the gear shaft 51, a fixed pulley 53 is installed at the upper end inside the installation cavity 13, a hanging piece 55 is arranged in the installation cavity 13, a hanging rope 54 is fixedly installed on the winding wheel 52, the free end of the hanging rope 54 penetrates through the fixed pulley 53 to be fixedly connected with the hanging piece 55, the hanging piece 55 is in a hanging state when the gate 2 naturally droops the gate pier 1, and the hanging piece 55 descends when the gate 2 rotates to open the gate pier 1; during the flood discharge, hang the gravity of piece 55 and the water makes gate 2 rotate to gate 2's pressure messenger gate 2, gate 2 drives support column 31 and removes, gear 42 rotates and rolls up reel 52 through gear shaft 51 and rotates, reel 52 rotates the unwrapping wire, hang 55 descends in midair, the flood discharge in-process, reduce the pressure of water to gate 2 gradually along with the water, gate 2 gravity is overcome water pressure and is hung 55 gravity return in midair, the rotation of drive gear 42 is passed through to support column 31 return, reel 52 rotates the receipts line, it rises to hang 55.

Preferably, all install the bearing in first mounting hole 11 and the second mounting hole 21, install the axle 3 and wear to locate in the bearing, such design, gate 2 rotates smoothly, can change to the water and make timely reaction and carry out the flood discharge.

Preferably, 2 bottom faces of gate are circular arc structure, and bottom face circular arc and arc strip 22 bottom circular arc are concentric circular arcs, and pier 1 is equipped with the arc wall in the 2 bottom of gate corresponding position, and arc wall circular arc place circular arc and curved guide 12 up end place circular arc are concentric circular arcs, and such structural design, when gate 2 droops naturally, gate 2 bottom and pier 1 complete contact, and the closure effect is better, and does not lead to the fact the interference to gate 2's rotation.

Preferably, gate pier 1 is equipped with a supporting bench in 12 bottom integrated into one piece of arcuate guide rail, and in 12 bottom embedding supporting benches of arcuate guide rail, such structural design, the supporting bench supported arcuate guide rail 12, avoided arcuate guide rail 12 to take place to warp and lead to weakening the radial support effect of gate.

Preferably, support column 31 is the cuboid structure, and the edge on support column 31 top is equipped with the chamfer structure, and the driving tooth on the support column 31 is V font structure, such structural design, and the driving tooth is to 2 one end slopes of gate and 31 top chamfers of support column, makes in the water debris difficult adhere to pile up in the gap that driving tooth and support column 31 formed, avoids leading to gear 42 and the unable meshing of driving tooth to lead to support column 31 to lose the damping effect under the influence of debris.

Preferably, the top surface of the transmission teeth on the supporting column 31 is parallel to the upper end surface of the supporting column 31, and the tooth top of the surface of the gear 42 is provided with a notch matched with the top end of the supporting column 31.

Preferably, the gate 2 comprises a gate plate and a screen plate embedded on the gate plate, and the gate plate and the screen plate are both coated with a water-based anti-corrosion coating. The water-based anti-corrosion coating can enhance the anti-corrosion capability of the gate and prolong the service life of the gate.

The water-based anticorrosive coating is formed by coating water-based anticorrosive coating on a gate plate and a screen plate and curing, and the preparation method of the water-based anticorrosive coating comprises the following steps:

EXAMPLE one preparation of Water-based anticorrosive coating for Gate surface

The water-based anticorrosive coating comprises the following raw materials: 100 parts of stainless steel scale, 300ml of epoxidized soybean oil, 10 parts of nano-scale zinc oxide, 30 parts of zinc-aluminum alloy scale, 300 parts of vinyl chloride-vinyl acetate resin, 0.5 part of defoaming agent, 50 parts of coupling agent, 10 parts of anti-settling agent, 10 parts of tourmaline powder, 200 parts of attapulgite, 40 parts of bentonite, 50 parts of nano-silica, 100ml of butyl acetate solution, 5ml of N, N-dimethylbenzylamine, 100ml of methacrylic acid-2-ethyl tert-butyl triester and 70ml of trimethylolpropane.

The preparation method comprises the following steps:

performing ultrasonic dispersion on the vinyl chloride-vinyl acetate copolymer, wherein the frequency is 20KHz, preparing into suspension, heating epoxidized soybean oil to 100 ℃, sequentially adding nanoscale zinc oxide and polymerization inhibitor N, N-dimethylbenzylamine, slowly adding the vinyl chloride-vinyl acetate copolymer suspension while stirring, and stirring for 90min at the constant temperature to obtain esterified vinyl chloride-vinyl acetate copolymer;

adding a butyl acetate solution into esterified vinyl chloride-vinyl acetate resin, performing ultrasonic dispersion for 15 minutes to form a suspension, adding a mixed solution of 2-ethyl tert-butyl methacrylate and trimethylolpropane, uniformly stirring, heating to 25 ℃, adding attapulgite, and performing ultraviolet radiation for 8 hours at 100 ℃ and a stirring speed of 1000r/min to obtain a mixed solution;

heating and dissolving the mixed solution at 70 ℃ for 2h, adding a defoaming agent, mechanically stirring and uniformly mixing, adding tourmaline powder, bentonite and nano silicon dioxide, carrying out ball milling for 2h, simultaneously adding stainless steel flakes, zinc-aluminum alloy flakes, a coupling agent and an anti-settling agent, and carrying out ultrasonic dispersion at the frequency of 25KHz to obtain the anticorrosive coating;

coating of a first layer: derusting the surfaces of the gate plate and the screen plate, cleaning the surfaces by using an ethanol solution, treating the surfaces by using normal-pressure normal-temperature plasma equipment to remove trace organic matters on the surfaces, increasing the adhesive force to the coating, naturally drying the surfaces after the treatment, coating the surfaces of the gate plate and the screen plate with a first layer of water-based anticorrosive coating by spraying the coating at a high speed, and drying the surfaces for 2 hours at 50 ℃;

coating a second layer: coating the dried gate door plate and the dried screen plate which are coated with the first layer with a second layer of water-based anticorrosive paint through high-speed spraying paint, and drying for 4 hours at 70 ℃;

coating a third layer: and coating the third layer of the water-based anticorrosive paint on the gate plate and the screen plate which are dried and coated on the second layer by manual brush coating, and naturally drying.

And coating the anticorrosive paint on the surfaces of the gate plate and the screen plate for many times until the thickness of the coating is 2 mm.

EXAMPLE two preparation of Water-based anticorrosive coating for Gate surface

The water-based anticorrosive coating comprises the following raw materials: 90 parts of stainless steel scale, 350ml of epoxidized soybean oil, 8 parts of nano-scale zinc oxide, 20 parts of zinc-aluminum alloy scale, 350 parts of vinyl chloride-vinyl acetate copolymer, 0.7 part of defoaming agent, 55 parts of coupling agent, 12 parts of anti-settling agent, 8 parts of tourmaline powder, 220 parts of attapulgite, 20 parts of bentonite, 20 parts of nano-silica, 150ml of butyl acetate solution, 10ml of N, N-dimethylbenzylamine, 150ml of methacrylic acid-2-ethyl tert-butyl triester and 40ml of trimethylolpropane.

The preparation method comprises the following steps:

adding a butyl acetate solution into esterified vinyl chloride-vinyl acetate resin, performing ultrasonic dispersion for 15 minutes to form a suspension, adding a mixed solution of 2-ethyl tert-butyl methacrylate and trimethylolpropane, uniformly stirring, heating to 25 ℃, adding attapulgite, and performing ultraviolet radiation for 6 hours at 140 ℃ and a stirring speed of 1500r/min to obtain a mixed solution;

heating and dissolving the mixed solution at 100 ℃ for 1h, adding a defoaming agent, mechanically stirring and uniformly mixing, adding tourmaline powder, bentonite and nano silicon dioxide, carrying out ball milling for 2h, simultaneously adding stainless steel flakes, zinc-aluminum alloy flakes, a coupling agent and an anti-settling agent, and carrying out ultrasonic dispersion at the frequency of 25KHz to obtain the anticorrosive coating;

coating of a first layer: derusting the surfaces of the gate plate and the screen plate, cleaning the surfaces by using an ethanol solution, treating the surfaces by using normal-pressure normal-temperature plasma equipment to remove trace organic matters on the surfaces, increasing the adhesive force to the coating, naturally drying the surfaces after the treatment is finished, coating the surfaces of the gate plate and the screen plate with a first layer of water-based anticorrosive coating by spraying the coating at a high speed, and drying the surfaces for 3 hours at 55 ℃;

coating a second layer: coating the dried gate door plate and the dried screen plate which are coated with the first layer with a second layer of water-based anticorrosive paint through high-speed spraying paint, and drying for 5 hours at 70 ℃;

EXAMPLE III waterborne anticorrosive coating for Gate surfaces preparation III

The water-based anticorrosive coating comprises the following raw materials: 70 parts of stainless steel scale, 250ml of epoxidized soybean oil, 15 parts of nano-scale zinc oxide, 15 parts of zinc-aluminum alloy scale, 300 parts of vinyl chloride-vinyl acetate resin, 0.5 part of defoaming agent, 30 parts of coupling agent, 7 parts of anti-settling agent, 12 parts of tourmaline powder, 150 parts of attapulgite, 30 parts of bentonite, 40 parts of nano-silica, 100ml of butyl acetate solution, 5ml of N, N-dimethylbenzylamine, 90ml of methacrylic acid-2-ethyl tert-butyl triester and 70ml of trimethylolpropane.

The preparation method comprises the following steps:

adding a butyl acetate solution into esterified vinyl chloride-vinyl acetate resin, performing ultrasonic dispersion for 15 minutes to form a suspension, adding a mixed solution of 2-ethyl tert-butyl methacrylate and trimethylolpropane, uniformly stirring, heating to 25 ℃, adding attapulgite, and performing ultraviolet radiation for 7 hours at the temperature of 130 ℃ and the stirring speed of 1300r/min to obtain a mixed solution;

heating and dissolving the mixed solution at 90 ℃ for 2h, adding a defoaming agent, mechanically stirring and uniformly mixing, adding tourmaline powder, bentonite and nano silicon dioxide, carrying out ball milling for 2h, simultaneously adding stainless steel flakes, zinc-aluminum alloy flakes, a coupling agent and an anti-settling agent, and carrying out ultrasonic dispersion at the frequency of 25KHz to obtain the anticorrosive coating;

coating of a first layer: removing rust on the surface of the gate, cleaning the gate by using an ethanol solution, treating the gate by using normal-pressure normal-temperature plasma equipment to perform surface treatment, removing trace organic matters on the surface, increasing the adhesive force to the coating, naturally drying the gate in the air after the treatment is finished, coating the surface of the gate with a first layer of water-based anticorrosive coating by spraying the coating at a high speed, and drying the gate for 2 hours at the temperature of 60 ℃;

coating a second layer: coating the dried gate coated with the first layer with a second layer of water-based anticorrosive paint by spraying the paint at a high speed, and drying for 4 hours at 80 ℃;

coating a third layer: and coating the third layer of the water-based anticorrosive paint on the dried gate coated with the second layer by manual brush coating, and naturally drying.

The above description provides a detailed description of a drainage mechanism suitable for sewage treatment. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The utility model provides a drainage mechanism suitable for sewage treatment, includes gate pier (1) and installs gate (2) in gate pier (1), its characterized in that: the gate (2) is an anticorrosive gate, a first mounting hole (11) has been seted up at gate pier (1) upper end, a second mounting hole (21) has been seted up at gate pier (2) upper end, install axle (3) in first mounting hole (11) and second mounting hole (21), gate pier (2) bottom both sides are equipped with arc strip (22), arc guide (12) is installed in gate pier (1) lower part, arc guide (12) and arc strip (22) place circle are concentric circles with first mounting hole (11) place circle, arc strip (22) lower end face and arc guide (12) up end tangent contact, it has support column (31) to articulate on gate (2), floating block (32) is installed to support column (31) free end, the equidistant drive teeth that are equipped with in support column (31) top, be equipped with gear erection column (41) on gate pier (1), the bottom end of the gear mounting column (41) is provided with a gear (42), the gear (42) is meshed with a transmission gear, a mounting cavity (13) is formed in one side of the gear mounting column (41) of the gate pier (1), one end of a gear shaft (51) of the gear (42) penetrates through the gear mounting column (41) and penetrates through the mounting cavity (13) to be mounted on the gate pier (1), a winding wheel (52) is fixedly mounted on the gear shaft (51) in the mounting cavity (13), a fixed pulley (53) is mounted at the upper end inside the mounting cavity (13), a hanging piece (55) is arranged in the mounting cavity (13), a hanging rope (54) is fixedly mounted on the winding wheel (52), the free end of the hanging rope (54) penetrates through the fixed pulley (53) and is fixedly connected with the hanging piece (55), and the hanging piece (55) is in a hanging state when the gate pier (1) naturally droops down, the gate (2) rotates the gate pier (1) to open, and the suspension part (55) descends.

2. The drainage mechanism of claim 1, wherein the drainage mechanism is adapted for sewage treatment, and the drainage mechanism comprises: the bearing is installed in the first installation hole (11) and the second installation hole (21), and the installation shaft (3) penetrates through the bearing.

3. The drainage mechanism of claim 2, wherein the drainage mechanism is adapted for sewage treatment, and the drainage mechanism comprises: the gate (2) bottom face is circular arc structure, and the bottom face circular arc is concentric circular arc with arc strip (22) bottom circular arc, and gate pier (1) is equipped with the arc wall in gate (2) bottom correspondence position, the circular arc that arc wall circular arc face belongs to and the circular arc that arc guide rail (12) up end belongs to are concentric circular arc.

4. A drainage mechanism suitable for use in sewage treatment according to claim 3, wherein: the gate pier (1) is provided with a supporting table at the bottom end of the arc-shaped guide rail (12) in an integrated manner, and the bottom end of the arc-shaped guide rail (12) is embedded into the supporting table.

5. The drainage mechanism of claim 4, wherein the drainage mechanism is adapted for sewage treatment, and the drainage mechanism comprises: the support column (31) is of a cuboid structure, a chamfer structure is arranged at the edge of the top end of the support column (31), and the transmission gear on the support column (31) is of a V-shaped structure.

6. The drainage mechanism of claim 5, wherein the drainage mechanism is adapted for sewage treatment, and the drainage mechanism comprises: the top surface of transmission tooth is parallel to each other on support column (31) and support column (31) up end, gear (42) surface tooth top portion seted up with support column (31) top assorted breach.

7. The drainage mechanism of claim 6, wherein the drainage mechanism is adapted for sewage treatment, and the drainage mechanism comprises: the gate (2) comprises a gate door plate and a screen plate embedded on the gate door plate, wherein the gate door plate and the screen plate are both coated with a water-based anti-corrosion coating, and the water-based anti-corrosion coating is formed by curing a water-based anti-corrosion coating.