77results about How to "Smooth water intake" patented technology

The invention relates to an assembled movable anti-flood wall. The assembled movable anti-flood wall comprises vertical columns and stop plates, the vertical columns include a middle vertical column and two-end vertical columns, each of the middle vertical column and the two-end vertical columns is provided with a through hole, two sidewalls of each of the middle vertical column and the two-end vertical columns are provided with insertion grooves, the inner sidewalls of the two-end vertical columns are provided with water inlet holes, the two sidewalls of the middle vertical column are provided with water inlet holes, the stop plates are provided with through holes, and two ends of each stop plate are inserted into the insertion grooves of the corresponding two adjacent vertical columns. The assembled movable anti-flood wall has the advantages that the assembled movable anti-flood wall is good in structural integrity by the aid of a trapezoid convex-concave structure splicing and inserting connection mode; when flood enters the multiple layers of stop plates from bottom to top layer by layer, the weight of the stop plates is increased by water weight, so that structural integral stability is improved greatly; the height of the lower stop plates is larger than that of the upper stop plates, and the joints between a base or an original dam and the base stop plates are provided with grooves and hermetic rubber water-stop strips, so that seepage-preventing and water-stopping effects are good; the anti-flood wall can be assembled and disassembled quite rapidly by means of socket type connection between the vertical columns and the base, so that working efficiency is improved greatly.

The invention discloses a drum washing machine. The drum washing machine comprises a non-porous drum which is installed in a shell and does not include a dehydration hole; a clothes putting opening isarranged in the side wall of the non-porous drum, and a door body capable of opening and closing the clothes putting opening through turnover is arranged on the drum; an outer barrel is mounted outside the drum in a sleeving way; and an electromagnetic heating module is arranged on the outer barrel to heat the inside of the outer barrel and transfer heating heat to washing water contained in thedrum. According to the drum washing machine provided by the invention, the electromagnetic heating module is arranged on the outer barrel so as to utilize an electromagnetic field to carry out heatingtreatment on the drum inside the outer barrel and the washing water inside the drum, so that the use purpose of adjusting the washing water temperature in the drum of the washing machine is achieved.

The invention discloses a screw extrusion type sludge dewatering machine, comprising a machine base (1), a water inlet part, a sludge exit part (41), a water outlet part, a screw shaft (2) with a spiral blade (21), as well as a filter disc assembly composed of a plurality of annular static filter discs (5) and annular dynamic filter discs (6) in a cross-interval arrangement; wherein, each static filter disc (5) is fixed relatively to the machine base (1); the internal diameter of each dynamic filter disc (6) coincides with the external diameter of the blade (21) and has line contact with the blade (21); moreover, the space between two adjacent static filter discs (5) is slightly greater than the thickness of the dynamic filter disc (6) between the two adjacent static filter discs (5) so as to form a gap (7) between the static filter discs (5) and the dynamic filter disc (5); water can flow through the gap (7). Compared with the prior art, the invention enables water to directly flow out through the gaps of the filter disc assembly so as to avoid the abrasion to the static filter discs and the dynamic filter discs caused by sludge; the device has a longer service lifer and adopts only one power source to realize solid-liquid separation, so that the energy consumption is lower; besides, the components of the device are easy to install and simple in structure to facilitate actual implementation.

The invention discloses an ecological ditch for rural domestic sewage collection and pretreatment and belongs to the field of rural sewage treatment. The ecological ditch for rural domestic sewage collection and pretreatment comprises a plurality of branch ditches and a main ditch. Torrent pollutant intercepting structures or slow flow pollutant intercepting structures are arranged at the water flow elevation changing positions of the branch ditches and the main ditch. Road intersection structures are arranged at the intersection positions between the branch ditches and roads and between the main ditch and roads. Each torrent pollutant intercepting structure is composed of a spherical suspended filler strand and an overflow weir. Each spherical suspended filler strand is formed by a plurality of spherical suspended fillers and a nylon rope which are connected in series. Each slow flow pollutant intercepting structure is formed by a slow flow pollutant reducing slope and a slow flow phytoremediation band which are connected. The ecological ditch for rural domestic sewage collection and pretreatment has the remarkable functions of rural domestic sewage collection and pretreatment, can effectively reduce the processing load of a follow-up process, and enables water to stably enter the follow-up process. In addition, the ecological ditch for rural domestic sewage collection and pretreatment will not cause secondary pollution, achieves waste resource utilization, and conforms to the environmental protection concept. Besides, the ecological ditch for rural domestic sewage collection and pretreatment is low in building cost and maintenance cost and is good in popularization and application value.

The invention belongs to the technical field of wastewater biological treatment, especially relates to a device and a method for treating low-carbon wastewater by multistage drainage type simultaneous shortcut nitrification-denitrification phosphorus removal paralleled with anammox. Firstly, carrying out anaerobic agitation on low-carbon wastewater which enters into a simultaneous shortcut nitrification-denitrification phosphorus removal SBR reactor from a low-carbon wastewater raw water tank, opening an air pump and regulating a gas flow indicator after finishing the anaerobic agitation to make the simultaneous shortcut nitrification-denitrification phosphorus removal SBR reactor enter an aeration agitation stage; opening a third water inlet pump after finishing aeration agitation, pumping two times of draining water in a first middle water tank into an anammox SBR reactor, then opening a second water inlet pump after carrying out the anaerobic agitation, pumping draining water collected in a second middle water tank into the simultaneous shortcut nitrification-denitrification phosphorus removal SBR reactor, and carrying out anoxic agitation to realize deep nitrogen and phosphorus removal; the device provided by the invention has the advantages of simple structural process, low operation expense, low energy consumption and oxygen consumption, and low sludge yield, and is free of secondary pollution.

The invention relates to a cleaning machine of oil tank trucks. The cleaning machine comprises a base, wherein a spray head device, a horizontal direction and distance adjustment mechanism of the spray head device and a lifting mechanism of the spray head device are arranged on the base. The horizontal direction and distance adjustment mechanism comprises a first oscillating bar, a second oscillating bar and an oscillating driving mechanism, wherein one end of the first oscillating bar is arranged on a lifting platform of the lifting mechanism in a horizontal oscillating mode, the second oscillating bar is arranged at the other end of the lifting platform relative to the first oscillating bar in a horizontal oscillating mode, and the oscillating driving mechanism drives the first oscillating bar and the second oscillating bar to oscillate horizontally. The spray head device is fixedly arranged at the end of the second oscillating bar far away from the first oscillating bar, a main linkage rod is horizontally arranged on the first oscillating bar in a parallel way, and auxiliary linkage rods fixedly connected with the second oscillating bar and the lifting platform respectively are hinged at two ends of the main linkage rod. By adopting the scheme, the spray head device of the cleaning machine of the oil tank trucks is simplified, and the direction of the cleaning machine can be adjusted.

The invention discloses a three-stage rotating disc-type sewage treatment device based on biologically active filler, and belongs to the field of treatment of sewage and wastewater. The device comprises an anaerobic hydrolysis acidification tank (1), a nitrification tank (2), a denitrification tank (3) and a sedimentation tank (4) which are sequentially connected, wherein disc cage-type structuresare arranged in the first three tanks, cages are filled with the biologically active filler so as to form cage-type biological turntables with different performance, and rotation is performed by theturntables in the separate reaction tanks under the drive of a driving system; one half of the nitrification biological turntable of the aerobic tank which is the nitrification tank is immersed in water, the other half is exposed to the air, and oxygenation and stirring of the water are achieved through rotation; and the turntables in the denitrification tank and the anaerobic hydrolysis tank areall immersed in water, and the water is stirred through rotation. A chemical mixing stirring device is arranged in the denitrification tank, and meanwhile a chemical phosphorus removal reaction and phosphorus removal in the flocculation process are realized by means of the rotary stirring function of the denitrification biological turntable in the denitrification reaction tank.

The invention discloses a sampler for aquaculture seawater, which comprises a base, a cylinder arranged on the base, a cylinder cover matched with the cylinder body and a sealing cap. The cylinder cover is provided with a filtration pore in the bottom, a counterweight block is arranged at the bottom of the base, the cylinder body is provided with a handle at the upper portion, and the handle is connected to a lifting rope, the cylinder body is further provided with a water outlet nozzle at the lower part of the cylinder body, a water outlet nozzle cap is arranged at an outlet of the water outlet nozzle; a limiting convex ring is arranged on the upper portion of the inner wall of the cylinder in a circumferential direction, a water inlet is formed in the gap formed at the middle of the limiting convex ring, the limiting convex ring is fixedly provided with a spring seat below, which is sleeved with a spring, a spring limiting groove is formed in the bottom surface of the sealing cap, the upper end of the spring is located in the spring limiting groove and fixedly connected with the sealing cap, and the lower end of the spring is fixedly connected with the spring seat. The sealing cap is located in the water inlet when the spring is in a natural state, and the side surface of the sealing cap is in sealed fit with the water inlet. The sampler for aquaculture seawater is novel andingenious in structure, convenient to use and carry, good in flexibility of use, convenient and fast in water collection, and water samples collected are difficult to spilled out.

The invention discloses a device and method for removing heavy metal ions in industrial sewage.The device is composed of an industrial sewage pond, a sewage pumping system, a treatment pond, a clean water pipe, a clean water tank, a treatment pond support and a control system.The control system starts the sewage pumping system to input industrial sewage containing heavy metal ions from the upper side wall into the treatment pond, and clean water treated by the treatment pond is drained into the clean water tank through the clean water pipe.According to the device and method for removing heavy metal ions in industrial sewage, the structure is novel and reasonable, the heavy metal ion removal rate is high, and the application range is wide.

The invention discloses a high-salt organic pigment production wastewater treatment method, which includes the following steps: conveying high-salt organic pigment wastewater to a regulating tank through a pipeline, and fully and uniformly mixing the wastewater; and entering, by an effluent, from the regulating tank into an electro-catalytic oxidation system through the action of a pump, entering,by the effluent, from the electro-catalytic oxidation system into a hydrolytic acidification system, adsorbing, condensing and degrading organic matters in a water body by a cultured domesticated bio-film and bottom sludge, sinking, by insoluble matters in the water, to the bottom, flowing, by a supernatant fluid, out after being collected by a top water collecting groove, entering, by the effluent, from the hydrolytic acidification system into a CMBR system through the action of the pump, and reacting the hydrolyzed acidified wastewater through a bio-reactor, wherein the organic matters areoxidized and decomposed under the action of high-concentration mixed activated sludge to complete wastewater treatment. Compared with the prior art, the electro-catalytic oxidation system has higher efficiency and can remove most harmful substances in most wastewater to a certain extent, so that the toxicity of the wastewater is greatly reduced.

The invention belongs to the technical field of ammonia-nitrogen wastewater treatment, and discloses a method for high-efficiency nitrosation of high-concentration ammonia-nitrogen wastewater with sodium carbonate for providing alkalinity. The method comprises the steps: (1) biological film hanging is performed in bioreactors containing a filler; and the bioreactors include a first-stage bioreactor and a second-stage bioreactor; and (2) a first part of sodium carbonate is added into an inlet water storage device, and the first part of sodium carbonate is mixed with the ammonia-nitrogen wastewater evenly; then ammonia-nitrogen wastewater having addition of sodium carbonate is sent into the first-stage bioreactor and is subjected to nitrosation, and effluent after nitrosation goes into an intermediate water storage device; and a second part of sodium carbonate is added to the intermediate water storage device and is mixed evenly, then the wastewater in the intermediate water storage device is sent to the second-stage bioreactor, and nitrosation is continued, and water is discharged after the reaction is finished. The method solves the problem that sodium carbonate as a foreign alkalinity is added to cause high pH value and the problem that the microbial activity is inhibited by free ammonia; the method has lower cost.

The invention discloses a phosphorus removal biological aerated filter-catalytic ozonation coupling device which comprises a water inlet system (4), a pipeline mixer (5), a biological aerated filter (7), an ozonation tower (11) and an ozone destruction system (14) which are communicated with one another in sequence, and further comprises a chemical feeding system, an air supply system (10) and an ozone supply device (12), wherein the chemical feeding system is communicated with the end, connected with the water inlet system (4), of the pipeline mixer (5); the air supply system (10) is communicated with the bottom of the biological aerated filter (7); the ozone supply device (12) is communicated with the bottom of the ozonation tower (11). The invention further discloses a phosphorus removal method for wastewater. The biological aerated filter has a relatively good phosphorus removal function; discharged wastewater can be injected into a follow-up ozonation unit to realize a catalytic oxidation effect; both the phosphorus removal efficiency and the organic pollutant removal efficiency are high.

The invention discloses a drum washing machine. The drum washing machine comprises an imperforate drum which is arranged in a shell and does not have dewatering holes, a clothes input opening is formed in the side wall of the imperforate drum, and the drum is provided with a door body which can be turned over to open and close the clothes input opening; and two ends of the imperforate drum are sealed, the centers of the sealed ends are connected with the shell through rotating shafts in a relatively rotating way, the rotating shaft of at least one end is composed of a hollow sleeve, and the hollow part forms a flow channel and communicates with a water inlet pipe of the washing machine. A water inlet structure is arranged at the central rotating shaft of the drum, so that the use functionof the top-opening type washing machine for feeding water into the imperforate drum is realized, and water is enabled to flow into the imperforate drum smoothly.

The invention discloses an integrated pump station type intelligent foundation pit drainage system, and belongs to the technical field of intelligent drainage. The integrated pump station comprises an integrated pump station body, the integrated pump station body is placed in a water collecting well at the bottom of a foundation pit, the integrated pump station body comprises a frame assembly, a water suction chamber, a working chamber, a main pump, an auxiliary pump and a pipeline assembly, the water suction chamber and the working chamber are sequentially arranged in the frame assembly from bottom to top, and the main pump and the auxiliary pump are placed in the working chamber; the integrated pump station type intelligent foundation pit drainage system has the capabilities of automatic induction, self-analysis and self-control, unmanned management is achieved, corresponding water levels are sequentially set, repeated start and stop of the water pumps are avoided, the energy consumption efficiency is improved, the cost is reduced, and the integrated pump station type intelligent foundation pit drainage system is suitable for large-scale popularization and application. According to the integrated pump station, the method of blocking hard foreign matter on the lower portion and blocking floating objects on the upper portion is adopted, and it is guaranteed that water enters the integrated pump station smoothly.

The invention discloses a constructed wetland-microbial fuel cell coupled treatment device and treatment method for rural domestic sewage. The treatment device comprises a grid, an adjusting tank, a water pump, a water inlet pipe, a water collecting pipe, a water outlet pipe, a return pipe, a water outlet tank, a constructed wetland and a microbial fuel cell, wherein the grid, the adjusting tank,the water pump, the water inlet pipe and the constructed wetland are sequentially connected; the multi-electrode microbial fuel cell is arranged in the constructed wetland; the water collecting pipe of the constructed wetland leads to the water outlet tank; and the bottom of the water outlet tank is connected with the water outlet pipe and the return pipe. Domestic sewage firstly enters the adjusting tank through the grid, then enters the device from the water inlet pip via the water pump, undergoes treatment under the dual action of the constructed wetland and the microbial fuel cell, and then enters the water outlet tank via the water collecting pipe, and 50% of the sewage is discharged through the water outlet pipe while the other 50% of the sewage flows back through the return pipe; the hydraulic retention time of the sewage is 1.5-2.0 days; the concentration of dissolved oxygen in a cathode region is 1.0-1.5 mg / L; and the output current of the device is more than 0.96 mA. The constructed wetland-microbial fuel cell coupled treatment device provided by the invention is simple in structure, convenient to operate and capable of effectively treating rural domestic sewage.

The invention discloses continuous sand filtration-ozone catalytic oxidation combined wastewater treatment equipment which comprises a pipeline mixing unit (1), a micro-flocculation reaction unit (2), a continuous sand filtration unit (3), an ejector ozone mixing unit (4) and an ozone catalytic oxidation unit (5) which are successively connected through pipelines. The micro-flocculation reaction unit (2) is filled with a coagulant. The continuous sand filtration unit (3) is filled with a sand filtration filler. The ozone catalytic oxidation unit (5) is filled with a catalyst. The invention also discloses a wastewater treatment method. The continuous sand filtration-ozone catalytic oxidation combined wastewater treatment equipment has advantages of compact structure, reasonable composition, low cost and good wastewater treatment effect.

The invention discloses a device and method for treating high-fluorine-content water produced by an oil well and a coal-bed gas well. The device is characterized in that the high-fluorine-content water enters a primary fluoride removal device through a water pump A by an automatic pH control liquid adding machine and then simultaneously and equivalently flows into a secondary fluoride removal device A and a secondary fluoride removal device B, namely the two secondary fluoride removal devices are connected in parallel to run; when the content of fluorine in effluent does not reach the standards, the primary fluoride removal device, the secondary fluoride removal device A and the secondary fluoride removal device B are connected in series to run; when the content of the fluorine in the effluent still does not reach the standards, an alumina activation and regeneration unit and the primary fluoride removal device form a circulation loop to regenerate a fluoride removal filler, and meanwhile, the two secondary fluoride removal devices are regenerated; the high-fluorine-content water is discharged after reaching the standards. According to the device and the method disclosed by the invention, two adsorbents, namely activated aluminum oxide and a carbon ceramic composite material are combined during the use, advantages are enhanced, and disadvantages are avoided, so that the fluorine removal effect is effectively improved; the device is simple in structure, automatic in running and convenient to maintain and manage and reduces the running cost.

The invention relates to a subsurface flow constructed wetland based on treatment of sewage with a low C / N ratio, a construction method of the subsurface flow constructed wetland and an enhanced denitrification treatment method for the sewage with the low C / N ratio. The method comprises the following steps: a subsurface flow constructed wetland bed is dug in sewage land to be treated, and 2 partition walls are arranged in the bed to divide the constructed wetland bed into three relatively-independent zones including a water distribution zone, a treatment zone and a water collection zone whichare arranged in sequence along the direction of a water flow; the interior of the treatment zone is sequentially filled with a sulphur / zeolite / gravel layer and a fine gravel / zeolite layer from the bottom to the top; activated sludge is poured into the subsurface flow constructed wetland bed, and membrane forming treatment is performed; the subsurface flow constructed wetland bed is filled with a soil layer, and aquatic plants are planted in the soil layer; and the sewage is poured into the subsurface flow constructed wetland, constructed wetland start-up treatment is performed, microbial acclimation treatment is performed, and therefore the subsurface flow constructed wetland for the sewage treatment is constructed. According to the methods disclosed by the invention, the sewage is processed by utilizing the constructed wetland, the nitrogen removal efficiency is high, and a removal rate of total nitrogen and a nitrate is high.

The invention relates to a bagged water taking device. The device comprises a main body, a thorn top and sealing rings, wherein the thorn top is fixed on the top of the main body; the sealing rings are sleeved on the outer side of the main body; the thorn top is a hollow cylinder; and petals or sawteeth with sharp edges are formed at the periphery of the top of the thorn top. The bagged water taking device is convenient to use, is applicable to soft packaging bags made of various materials, has a better sealing effect, and overcomes the defect of the conventional bagged water taking device, and propagation cracks cannot be generated on a packaging film when the bag is pierced.

The invention discloses a wastewater advanced-denitrification treatment system. The system comprises a reactor, a water discharge mother tube, a wastewater inlet pipeline, a wastewater outlet pipeline, a circulating pipeline, a backwashing water inlet pipeline, a backwashing water outlet pipeline, a dosing pipeline, a filler adding pipeline, an inlet water tank, an outlet water tank and a controlcabinet, wherein a filler layer is arranged in the reactor to effectively remove nitrogen in sewage, addition of a carbon source is not needed in the whole process, and the control cabinet is used tocarry out interlock control on electric valves, pumps and detectors arranged on relevant pipelines. The invention also discloses a wastewater advanced-denitrification treatment technology. The automatic control of the whole system is realized through multiple feedback adjustments. Sulfur autotrophic denitrification using reduced sulfur as an electron donor is carried out to treat the nitrogen-containing wastewater and realize effective automatic control of the critical point.

The present invention involves assembly mobile flood prevention walls, including columns and baffles. The columns include both ends and intermediate columns.There are slots on the two side walls. There are water intake holes on the inner wall of the columns at both ends, and water intake holes are opened on the two side walls of the middle column.The two ends are inserted in the slot of the two adjacent columns.The invention trapezoidal concave structure combination connection method makes the structure better.When the flood enters the baffle from the bottom up layer by layer, increase the weight of the baffle through the water weight to further improve the overall stability of the structure.The height of the lower baffle is higher than the height of the upper baffle, and the base or the original dam and the underlying baffle are provided with grooves and sealing water stops to prevent seepage and water and preventing water.The socket -type connection between the column and the base makes the installation and disassembly of the flood prevention wall very fast, which greatly improves the work efficiency.

The invention belongs to the technical field of environmental engineering biological sewage treatment, and discloses a method for stabilizing nitrosification based on an ammonia-nitrogen adsorption material strengthened membrane bioreactor. The method comprises the following steps: (1) carrying out cultivation of aerobic nitrifying sludge inside the membrane bioreactor; (2) after the cultivation is completed, adding a material with an ammonia-nitrogen adsorption characteristic into the membrane bioreactor, then introducing ammonia-nitrogen wastewater into the membrane bioreactor, after the reaction for certain hydraulic retention time under dissolved oxygen of 0.1 to 7.0 mg / L at the temperature of 20 to 40 DEG C, and discharging water to realize efficient and stable nitrosification of ammonia-nitrogen wastewater. According to the method disclosed by the invention, efficient nitrosification of the reactor can be realized stably, and the shock resistance of the reactor can be improved, so that the toxic effect of the high-concentration ammonia-nitrogen wastewater on microorganisms is reduced; the method is simple, and the occupied area is small; and moreover, the ammonia-nitrogen treatment load is higher, and the nitrosification is more stable and efficient.

The invention relates to a steam generator. The steam generator comprises a fan, a furnace head and an inner container, wherein the fan is connected with the furnace head; and the furnace head comprises a furnace head combustion space. The steam generator is characterized in that the inner container is at least divided into four layers from top to bottom, respectively including a first steam water tank layer, a second steam water tank layer, a third steam transporting high-temperature channel layer and a fourth afterheat water tank layer, wherein the furnace head combustion space is arranged at the lower part of the first steam water tank layer; a second-level transporting combustion space is arranged at the upper part of the first steam water tank layer; a third afterheat transporting combustion space layer is arranged at the upper part of the second steam water tank layer; a fourth afterheat transporting combustion space layer is arranged at the upper part of the third steam transporting high-temperature channel layer; a discharge flue is arranged at the top part of the fourth afterheat water tank layer; heating tubes which are communicated are respectively arranged among the furnace head combustion space, the second-level transporting combustion space, the third afterheat transporting combustion space layer, the fourth afterheat transporting combustion space layer and the discharge flue according to the sequence; and a steam outlet is respectively arranged on the first steam water tank layer and the second steam water tank layer. The steam generator, disclosed by the invention, is energy-saving, environment-friendly and safe, and can generate steam at a high speed, supply water source automatically and set a water level.

The invention discloses a water inlet end cover applied to a holeless drum. The water inlet end cover is mounted in a bowl-shaped upside-down mode on the inner wall of the drum; a water inlet cavity is surrounded by the water inlet end cover and the drum wall together; and the water inlet end cover is provided with at least one hollow-out part so as to communicate the water inlet cavity with the inside of the drum. The invention further discloses a drum washing machine, wherein a drum comprises a cylindrical side wall; both ends of the cylindrical side wall are respectively sealed so as to form a cylindrical sealed container; and the water inlet end cover is arranged at the center of a sealed end of the drum, so that the water inlet cavity is surrounded by the water inlet end cover and theinner wall of the drum together. By arranging the water inlet end cover at the center of the sealed end of the holeless drum, inlet water flow is blocked by the water inlet end cover to generate divergent spurting so as to increase a covering area of the inlet water flow and promote an immersion wetting effect on clothes. Meanwhile, the water inlet cavity surrounded by the water inlet end cover and the inner wall of the drum together is formed inside the drum so as to take a buffer effect on the inlet water flow and promote water inlet smoothness.

The invention discloses a longitudinal flow capacity detecting method of a plastic drainage board, relating to a flow capacity detecting method of a drainage board for a hydraulic structure. An upstream water level container, a pressurizing water supply container, a pressure gauge, a downstream water level container, a water pump and a box body are adopted in the longitudinal flow capacity detecting method. The longitudinal flow capacity detecting method is characterized in that the upstream water level container and the downstream water level container have same pipe diameters as that of the pressurizing water supply container; the upstream water level container, the downstream water level container and the pressurizing water supply container are connected in a U-shaped manner to be vertically arranged in the box body; water and the water pump are placed in the box body, a water pump water-conveying pipe is connected to a slow-flow hole of the upstream water level container; connecting disks at two sides of the pressurizing water supply container are provided with pressure-bearing modules with rectangular grooves, the outer sides of the pressure-bearing modules are provided with pressurizing modules with rectangular grooves; two porous flat plates are arranged in the pressurizing water supply container, a sample is clamped between the two porous flat plates, a pressurizing hole of the pressurizing water supply container is connected with the pressure gauge and a pressurizing air pump; and a straight pipe of the upstream water level container is provided with a slow flow hole and an overflow hole, a straight pipe of the downstream water level container is provided with a drainage hole, and a measuring cylinder is arranged below the drainage hole.

The invention discloses a siphon rainwater hopper adopting a novel water feeding mode. The siphon rainwater hopper mainly comprises a hopper cover and a hopper body, wherein a fixing nut, a reverse eddy device, an agitation flow siphon flow grid, a fixing screw and a fixing gasket are arranged on the hopper cover; a balancing nut, a stainless steel balancing disc, a fixing nut, a fixing gasket and a stainless hopper body are arranged on the hopper body; the hopper body is provided with a stainless steel short tube and an HDPE (high-density polyethylene) short tube connected in a flange way. The siphon rainwater hopper is beneficial to ensuring that rainwater on a roof is quicker to flow, greatly improves the drainage efficiency, reduces the time for forming siphonage, effectively improves the drainage efficiency of rainwater on the roof, gives sufficient consideration to scientificity and economy during designing, ensures that rainwater is more flexible to flow into the hopper and is not blocked according to the characteristics of rainwater through the design of the hopper body, has high capacity in preventing the blocking of garbage on the roof, and ensures that a siphon drainage system is more efficient, practical, safe and environmentally friendly.

The invention discloses a roller washing machine, which comprises a nonporous roller which is arranged in a shell and does not have dewatering holes, wherein a clothes input opening is arranged on a side wall of the roller, and a door cover which can controllably open and close the clothes input opening is arranged on the roller; one side of the door cover is hinged with a rotary shaft of the roller, and a rotatable spring bolt is arranged at the other end of the door cover so that the spring bolt rotating around the shaft can be locked with or broken away from the roller. Through the arrangement, a user can realize the purpose of controllably opening and closing the door cover arranged at the clothes input opening of the roller only by rotating the spring bolt, so that the complexity of opening and closing the door cover is greatly reduced; meanwhile, the locking degree of the closed door cover is ensured, and the condition that the roller is opened by mistake in the rotating processis effectively avoided.

The invention discloses a water purifying system. The water purifying system comprises a water purifying filter element, a water inlet tube, a gas supplementing assembly, a water outlet tube and a foaming device, wherein the water inlet tube communicates with a raw water source and the water purifying filter element, the gas supplementing assembly is used for supplementing gas into the water inlettube and connected to the water inlet tube, the water outlet tube communicates with the water purifying filter element and a user water-using end, the foaming device is used for enabling the gas andwater to be fully mixed so as to generate bubbles in the water, and the foaming device is connected to the water inlet tube and located between the water purifying filter element and the gas supplementing assembly. The water purifying system has the advantages of high reliability, good water purifying effect and the like.

The invention discloses a breather valve applied to a non-porous drum. The breather valve comprises a valve plate, and the valve plate is provided with a cleft only allowing gas to flow through; the valve plate is assembled on a mounting structure; the mounting structure comprises a bracket; the bracket comprises a disc-shaped body having a plurality of hollow-out portions; the valve plate coversthe bracket laid at one side of the disc-shaped body; and a certain distance exists between the valve plate and the disc-shaped body to leave an activity space for deformation of the valve plate. Theinvention further discloses a drum washing machine. The drum washing machine comprises the non-porous drum which is installed in a shell and does not include a dehydration hole; and the non-porous drum is provided with at least one breather hole, and the breather valve is installed on each breather hole. Through the above arrangement, the valve plate can be fixedly assembled on the breather hole of the drum, and the fixed installation of the breather valve plate is realized; and at the same time, due to the blocking effect of the bracket, the direct contact between the valve plate and clothesand water flow in the drum is avoided, thereby preventing the situation that the valve plate is directly impacted and damaged.

The invention relates to the technical field of non-point source pollution treatment, and provides a sewage intercepting box culvert water taking system. The sewage intercepting box culvert water taking system comprises a water taking opening formed in the side wall of a box culvert, a front staying pool communicating with the water taking opening and used for conducting buffering treatment on sewage entering from the water taking opening, a sand setting device communicating with the front staying pool and used for conducting pre-sand setting treatment on the sewage, and a pump cylinder communicating with the sand setting device and used for lifting the sewage to a sewage treatment system. The front staying pool, the sand setting device and the pump cylinder are all arranged below the ground. The sewage intercepting box culvert water taking system replaces a traditional building pump station, is a full-underground type sewage intercepting box culvert water taking system, is small in occupied area and convenient to construct and install, is free of overground building parts, and cannot generate any influence on riverway flood draining; and the independently-arranged sand setting device facilitates clearing of impurities in the sewage, and water can be smoothly taken in the limited water taking space.