55results about How to "Will not affect water quality" patented technology

The invention provides an ecological ditch with a nitrogen and phosphorus removal function. The ecological ditch with the nitrogen and phosphorus removal function comprises a quasi-three-smooth-side ditch body, a plurality of solid slow release carbon source packing pools and a lifting dam, wherein the solid slow release carbon source packing pools are located below the bottom of the quasi-three-smooth-side ditch body, and the lifting dam is located at the tail end of the ecological ditch in the water flow direction. On the whole, a construction method of the ecological ditch with the nitrogen and phosphorus removal function is developed by taking the problems of a traditional soil ditch and a traditional three-smooth-side cement hardened ditch into full consideration. On the basis that the normal drainage function of a farmland ditch is guaranteed, the functions of a soil adsorption part, a packing adsorption part, a plant adsorption part, a biodegradation part and other parts of the ditch are enhanced, the biological diversity of the farmland ditch is enriched, effective removal of nitrogen and phosphorus pollutants in farmland tail water is achieved, and the ditch is made to serve as a nitrogen and phosphorus pollutant treatment unit between the farmland tail water and a receiving water body.

The invention discloses a wolframine beneficiation wastewater treatment process, and belongs to the field of industrial wastewater treatment. The method comprises the following steps of A, adding lime into wolframine beneficiation wastewater, so that the pH value is regulated to 11 to 12; B, performing solid-liquid separation after destabilization precipitation; C, discharging solid into a tailing pond, putting inlet and outlet water into a first-stage reaction tank, and adding sodium carbonate; D, putting into a second-stage reaction tank, adding coagulant aids PAM into the second-stage reaction tank to take flocculation reaction with the PAM; E, performing self flowing to put into a precipitation pool, and discharging the bottom layer concentration sewage into the tailing pond; F, putting supernatant fluid into a micro-flocculation filter, using 5-percent outlet water as reverse flushing water to be discharged into the tailing pond; G, adding concentrated sulfuric acid into 95-percent outlet water to regulate the pH value to 6 to 9; H, putting the outlet water into a micro eddy current reaction pool, and using the 5-percent outlet water as flushing water to be discharged into the tailing pond; I, eliminating carbon dioxide from 95-percent outlet water through a degassing tower, so that the water can be reused for wolframine beneficiation or can be directly discharged. The process has the advantage that the wolframine beneficiation wastewater reuse rate is improved.

The invention discloses an application of a polymer additive M4228 in preparing copolypropylene tubing. A dosage of the additive accounts for 0.5% to 1% of the mass of foundation powder of the copolypropylene tubing. The copolypropylene tubing prepared through a method provided in the invention can satisfy mechanical performances required by tubing, bear a comparative inner static pressure, has a good dimensional stability under the pressure, and has a substantially improved service life. In long-term hydraulic strength testing, the service life of the tubing prepared through adding the M4228 is far beyond 50 years in nominal bore at a temperature of 20 DEG C; an oxidation induction period of the tubing prepared by adding the M4228 is more than 80 min; and the hygienic property is improved. The additive M4228 self is nontoxic and odorless, does not influence the product appearance after being added into the tubing, allows the product to have no peculiar smell, and does not get into water to influence the quality of water because the additive M4228 has a good water extraction resistance.

The invention discloses preparation and application of a sulfur-based autotrophic and heterotrophic denitrification nitrogen removal biological filler. According to the invention, the number of micropores and silicon hydroxyl groups on the surface of ceramsite is increased through alkali etching; then the surface of the alkali-modified ceramsite is activated by utilizing high-activity disulfur dichloride; and the disulfur dichloride can be chemically bonded with hydroxyl functional groups on the surface of the ceramsite, so sulfur is loaded onto the surface of the ceramsite to form Si-O-S andcross-linking is performed so as to form a stable net-shaped structure. The sulfur-based autotrophic and heterotrophic denitrification nitrogen removal biological filler provided by the invention canrealize coupling of sulfur-based autotrophic and heterotrophic denitrification, is beneficial for the attached growth of microorganisms, reduces the addition of carbon sources, improves population richness, further increases nitrogen removal efficiency and stabilizes effluent quality.

The invention discloses a stainless steel water meter case and a production process thereof. The production process comprise a case main body production process, a water inlet end production process and a water outlet end production process; According to the production process, the case main body, the water inlet end and the water outlet end are subjected to processes such as dismantling, laser cutting, welding, stamping and extrusion forming, so that the stainless steel water meter case is not only capable of oxidation resistance, corrosion resistance and long-term use and beautiful in appearance, but also environment-friendly, non-polluting and without influence on water quality. Meanwhile, according to the production process, the whole water meter case is dismantled into a plurality ofparts which have no large curved surfaces and can be mutually connected just by laser spot welding, the manufacturing difficulty and the manufacturing cost are greatly reduced, and the product qualification rate is improved; and a valve and a valve rod are further arranged in the water meter shell, and therefore internal water flow can be automatically controlled by the valve and the valve rod.

The invention relates to a sludge drying device and a sludge drying method. The sludge drying device comprises a heat pump, a drying device and an air adjusting device, wherein process water from a wastewater treatment system is fed into the heat pump; sludge is fed into the drying device to be dried; the air adjusting device is connected to the drying device to form a closed system and used for air for drying the sludge to circularly flow in the closed system. Saturated evaporation moisture generated in the sludge drying process enters the air adjusting device from the drying device, the airadjusting device dehumidifies and dries the saturated evaporation moisture, the dehumidified and dried air is heated by the heat transferring medium which is discharged from an air cooler of the heatpump into hot air, and then the hot air is fed into the drying device to dry the sludge.

The invention relates to a sewage treatment plant rectangular secondary sedimentation tank effluent weir automatic cleaning device. Two floating bodies are respectively formed on two sides of the vehicle body. The inner cavity of each floating body is hollow. Two sides, which are close to the rear end, of the vehicle body are both provided with an impeller. Two sides of the front end of the vehicle body are respectively provided with a No.1 brush and a No.2 brush, and a No.3 brush and a No.4 brush are arranged between the No.1 brush and the No.2 brush. The rectangular secondary sedimentation tank effluent weir automatic cleaning device has the advantages that the structure is simple, the weight is light, the maintenance is convenient, the device can be handled by the operator, the labor strength for cleaning the secondary sedimentation tank effluent weir is reduced, the work efficiency is improved, and the safety is guaranteed. The automatic cleaning device will not destroy the original structure and influence the operation of secondary sedimentation tank effluent weir. Although the area of sewage treatment plant secondary sedimentation tank is large, the provided cleaning device can quickly finish the cleaning work.

The invention relates to a stem flow intercepting method comprising the following steps of: firstly forming a waterproof layer, winding plastic cloth on the smooth position of a stem with a tree bark removed, then winding a folded elastic membrane on the upper end of the smooth stem and outside the plastic cloth, and then tightening by using iron wires; secondly downwards rolling the upper edge of the plastic cloth to wrap the elastic membrane, and tightening by using the iron wires; thirdly forming a waterproof plastic bib, upwards rolling the lower edge of the plastic cloth so that the smooth stem with the tree bark removed is wrapped in the rolled lower edge, and tightening by using the iron wires; and finally fixing a conduit for guiding water flows on the lower edge of the formed waterproof plastic bib so that the water flows are guided to a measuring device. The stem flow intercepting method can be used for intercepting 95-98 percent of stem flows, is convenient to implement without any influence on water quality and meets the requirements for water quality measurement of the water yield of the stem flows.

The invention discloses a method for boiling water for an electric kettle. When the water in the electric kettle reaches a preset boiling water temperature in a state of being powered on, a timing unit is started, and after 3 minutes of timing, a power-off device is started to cut off the power supply and stop boiling water. For this reason, the present invention also discloses an electric kettle, the upper part of the water container is provided with a pure water / mineral water level line and a tap water level line, and the tap water level line is 3-5 cm lower than the pure water / mineral water level line. The method of use is that when the temperature signal detected by the temperature sensor reaches the preset boiling water temperature, the timing unit and the related control unit are activated, and the power-off device is activated after the predetermined time is counted. The present invention has the following advantages: 1. Put an end to carcinogenic water or harmful water, so that everyone can drink healthy water. 2. According to the type of water, the water can be boiled according to the situation, which will not affect the quality of pure water, and can also make tap water healthy. 3. The second type of kettle can save electricity and energy consumption when boiling.

The invention provides cartilage fish feed, which is prepared from the following ingredients in parts by weight: 23 to 34 parts of peanut meal, 15 to 22 parts of bean meal, 4 to 7 parts of cuttlefish paste, 3 to 7 parts of Chinese herbal medicine additives, 8 to 16 parts of fish meal, 15 to 24 parts of algae compounds, 3 to 5 parts of potato starch, 1 to 4 parts of antioxidants, 10 to 20 parts of shrimp shell powder, 9 to 16 parts of wheat flour, 17 to 26 parts of sargassum pallidum, 0.6 to 1.2 parts of complex vitamin and 3 to 8 parts of sweet potato stems and leaves. The feed has the advantages that the nutrition proportioning ratio is reasonable; the requirements of the cartilage fish growth can be met; the immunological competence and the strain resistance capability of the cartilage fish can be effectively improved; the palatability is good; the stability in the water is good; the bait coefficient is low; the growth of the cartilage fish can be effectively promoted; the feed cost is low; the preparation method is simple; the water quality cannot be influenced after the feed throwing; no toxic and harmful substances are contained; green and environment-friendly effects are achieved.

The invention discloses a heat transfer accelerating device for a water heating kettle. The heat transfer accelerating device comprises an air circulation chamber; a water inlet is formed in the heating surface at the bottom of the air circulation chamber and is connected with a water delivery pipe, and the water delivery pipe penetrates out of the air circulation chamber from bottom to top; an air delivery pipe is arranged on the side wall, positioned at one section in the air circulation chamber, of the water delivery pipe, an air delivery valve is arranged on the air delivery pipe, and an air supply mechanism is also arranged on the air circulation chamber. The heat transfer accelerating device disclosed by the invention can automatically run in the water heating kettle without depending on the driving of any external energy and making any change in a kettle body. Water with the highest temperature at the bottom of the kettle is continuously conveyed to a water surface with the lowest temperature in the kettle and simultaneously flows at the bottom of the kettle in a convergence shape, so that the heat efficiency is greatly improved, the energy-saving effect is obvious, and safety and reliability are realized.

The invention relates to a sludge drying device and a sludge drying method. The sludge drying device comprises a heat pump, a drying device and an air adjusting device, wherein process water from a wastewater treatment system is fed into the heat pump; sludge is fed into the drying device to be dried; the air adjusting device is connected to the drying device to form a closed system and used for air for drying the sludge to circularly flow in the closed system. Saturated evaporation moisture generated in the sludge drying process enters the air adjusting device from the drying device, the airadjusting device dehumidifies and dries the saturated evaporation moisture, the dehumidified and dried air is heated by the heat transferring medium which is discharged from an air cooler of the heatpump into hot air, and then the hot air is fed into the drying device to dry the sludge.

The invention discloses a water-heat simultaneous transfer system based on reverse osmosis seawater desalination and nuclear energy heat supply. The water-heat simultaneous transfer system is characterized in that a primary fresh water preheating device, a secondary reverse osmosis device, a dosing and mineralizing device, a fresh water storage device and a secondary heating device are arranged ona nuclear energy heat source side, namely a nuclear energy heat supply system in a nuclear power plant; a heat extraction device, a direct drinking water device and a fresh water mixing storage device are arranged on a load side, namely a user side, and the outlet end of the fresh water mixing device is connected with a fresh water user.

The invention provides a wastewater treatment system. The wastewater treatment system comprises a primary flocculation reaction tank, which is used to receive wastewater; a Ca(OH)2 adding system, which is used to add Ca(OH)2 into the primary flocculation reaction tank; a primary clarification tank, which is communicated with the primary flocculation reaction tank and is used to receive wastewaterin the primary flocculation reaction tank; a secondary flue gas reaction tank, which is communicated with the primary clarification tank and is used to receive wastewater in the primary clarificationtank; and a flue gas addition device, which is used to introduce flue gas into the secondary flue gas reaction tank so that flue gas can react with wastewater in the secondary flue gas reaction tank.Due to the secondary flue gas reaction tank, waste factory flue gas is introduced into the system, the addition amount of Na2CO3 is largely reduced, the operation cost is reduced; and when the Ca<2+>concentration of the wastewater is greater than Mg<2+> concentration of the wastewater, the aeration amount of flue gas is controlled so that Na2CO3 is not needed any more.

The invention provides a water-saving faucet. A first water pipe is arranged in a faucet, a water inlet pipe is arranged at one end of the first water pipe, a lower ceramic sealing sheet is arranged at one end of the water inlet pipe, an upper ceramic sealing sheet is arranged at one end of the lower ceramic sealing sheet, a water outlet is formed in one end of the upper ceramic sealing piece, anda shower head is arranged at one end of the water outlet; a second water pipe is arranged inside the faucet, one end of the second water pipe is connected with the water inlet pipe, a water storage tank is made of a transparent material, a water storage tank is arranged inside the water storage tank, a pull rod is arranged inside the water storage tank, and a guide wire is arranged at one end ofthe pull rod; and a third water pipe is arranged at one end of the water storage tank, a valve is arranged inside the third water pipe, one end of the valve is connected with the guide wire, and one end of the valve is connected with the second water pipe. According to the faucet, water dropping and water leakage can be effectively prevented, the discharge of water is reduced, and the waste of water resources is avoided; and the situation of water outage due to power off can be avoided, the whole structure is simple, the use is convenient, and the faucet is suitable for being used at home.

The invention discloses a honeycomb-type water bottom shelter for aquatic animals and an application method. The water bottom shelter is of a long-tubular structure with the orthohexagonal section, and the long-tubular structure comprises an opening end and a closing end; the tube walls are of engaged structures capable of allowing barrier bodies to be connected to form honeycomb-type arrays, and the tube walls at the other ends are of anti-sliding structures preventing sliding. When the honeycomb-type water bottom shelter is used, the multiple barrier bodies are sequentially connected together from bottom to top to form a honeycomb-type composite structure and put into a culturing water body, and then to-be-cultured aquatic animals are put and fed. According to the honeycomb-type water bottom shelter for the aquatic animals and the application method, space is reasonably used through the network stacked structure, the more stable impact-resistant effect can be generated, position moving caused by impacting of the barrier bodies of water flow can be reduced, and stable nests are provided for aquatic animals, wherein inhabiting of aquatic animals is not prone to interference of the external environment and biology through the nests; valuable aquatic water body space is saved, and meanwhile culturing operating and management are also convenient.

Provided is a composite geo-membrane anchorage and floating resisting structure. The composite geo-membrane anchorage and floating resisting structure is a novel floating resisting structure which can be applied to composite geo-membrane horizontal seepage prevention projects such as plain reservoirs, artificial lakes, impounding reservoirs and municipal landfills. The structure comprises a floating resisting composite geo-membrane, soil anchors and an anchorage structure, and is characterized in that one side of the floating resisting composite geo-membrane is provided with non-woven geotextile, and the other side of the floating resisting composite geo-membrane is provided with woven geotextile with suspension straps; the woven geotextile with the suspension straps is made through a machine or by weaving, and the high-strength suspension straps are evenly arranged in the warp direction (namely the longitudinal direction) of the geotextile; the soil anchors are fixed into foundation soil of a certain depth through an anchor rod drilling machine and an anchorage agent; the anchorage structure is used for connecting anchor rods with the floating resisting composite geo-membrane, the anchor structure can be made of concrete or steel or plastic and includes line anchors and spot anchors, the line anchors are in a long beam shape, and the spot anchors are in a disc shape; and the floating resisting composite geo-membrane is tied or welded to the anchorage structure through the high-strength suspension straps, and the anchorage structure is fixed into the foundation soil through the anchor rods.

The invention discloses a water purifying machine, which has a reaction vessel. The reaction vessel is provided with a reaction vessel inlet and a reaction vessel outlet, which also has a system water inlet and a system water outlet. The water outlet of the system is connected with a water supply pipe under a pool. The water outlet and the water inlet of the system are respectively connected with the reaction vessel inlet and the reaction vessel outlet through connecting pipes. A tee and double-position valve is respectively arranged on a joint of the three pipes of the system water inlet and the system water outlet or the joint of the three pipes of the reaction vessel inlet and the reaction vessel outlet. The water supply pipe is communicated with a sewage drain through another valve. The invention provides the water purifying machine without arranging the sewage drain pipe and the water purifying machine has the advantages of complete function, simple structure and simplified sewage drain pipe, thus having fewer requirements for equipment position, as well as better ensuring that the house arranging location is clean and beautiful.

The invention discloses a dual-mode drinking machine based on solar energy and electric heating, which is characterized in that water is heated through the heat of a solar water heater, and is output through the dual-mode drinking machine. The main research purpose of the invention is to introduce a new energy source in the process of heating drinking water so as to reduce the dependence of the drinking water heating process on the traditional chemical energy sources and then to realize energy saving and consumption reduction. The dual-mode drinking machine comprises a solar heating device, an electric heating device and a drinking machine body, wherein the solar heating device comprises a pipeline and a heat exchanger; the heat exchanger is arranged in a drinking water storage tank of the drinking machine body; the heat exchanger is connected with the solar water heater through the pipeline; the electric heating device comprises a heater; the heater is positioned in the drinking water storage tank; the heater is connected with a controller. The dual-mode drinking machine based on the solar energy and electric heating has the main meanings that the drinking water is heated by utilization of the excess energy of the solar water heater, and the water quality of the drinking water cannot be affected in the whole process, so that a lot of chemical resources are saved, and the dependence of people on the chemical resources is reduced.

The invention discloses a water bank weed cutting device, which comprises a bearing frame, a rotating shaft is installed on the bearing frame, a rotating drum is set on the rotating shaft, a fixing frame is installed on the rotating drum, and a first A movable arm, a second movable arm is installed on the first movable arm, a mounting plate is fixed on the second movable arm, a motor frame is installed on the second movable arm, a rotating motor is installed in the motor frame, and the installation The plate is provided with an annular chute, and a chain is fitted in the annular chute, a cutting piece is installed on the chain, and a first fitting is installed on the bearing frame. The invention can cut the water bank and the grass in the water without affecting the water quality, has high cutting efficiency and good effect, and can be adjusted according to different angles of the water bank.

The invention discloses a diatom liquid compound fertilizer and a preparation method thereof. The diatom liquid compound fertilizer comprises nitrogen element, phosphorus element, silicon element, iron element and fresh water, wherein in per 1L of fresh water, the nitrogen mass concentration is 20%-25%, the phosphorus mass concentration is 3.5%-4.8%, the silicon mass concentration is 3.8%-5.2%, and the iron mass concentration is 0.4%-0.5%. Full dissolubility of the fertilizer is realized, the deposition rate is decreased, soil pollution is avoided, influences on water quality are avoided, andfast growth of razor clams is promoted.

The invention provides a feed for ornamental fishes. The cayenne pepper powder ornamental fish feed with the capabilities of color increasing and brightening is prepared by the following steps: carrying out material selection, mixing and preparation on raw materials mainly based on cayenne pepper powder according to a certain ratio. According to the feed provided by the invention, by virtue of capsanthin in natural peppers, a red pigment source of the ornamental fishes is provided, and good color development of the ornamental fishes can be formed by virtue of matching of the capsanthin and zeaxanthin; meanwhile, due to the extruded expansion action, the adhesion degree of the cayenne pepper powder and other substances in particles is high, and no harmful effect is generated on water quality. With the adoption of the feed, the ornamental fishes are rapid in color development and normal in growth, and the ornamental value of the ornamental fishes can be increased with low cost.

The invention discloses a sewage precipitation device for environmental protection. The sewage precipitation device comprises a precipitation tank and two fixing plates, wherein a floating article filtering device is arranged on one side of the precipitation tank; a filtering device is arranged on a side wall at one end of the precipitation tank; a water baffle device is arranged on one side of the precipitation tank; a mounting plate is fixed at the upper ends of the two fixing plates; a holding plate is fixed at the lower end of the mounting plate; a groove is formed inside the holding plate; a third protection tank is fixed on one side at the lower end of the mounting plate; a third driving device is fixed on a side wall at one end of the third protection tank. By adopting the sewage precipitation device for environmental protection, a coagulant can be much sufficiently stirred with sewage, then waste can be reduced, in addition, due to the stirring, relatively sufficient stirring can be achieved through telescopic movement of blades, floating articles can be firstly removed, then the water quality is not affected when water is stirred, and the device is worthy of popularization.

The present invention provides a feed for ornamental fish and a color and brightening increasing red chili powder ornamental fish feed. The fish feed is prepared from the steps of selecting materials, mixing materials, and preparing materials, and uses the red chili powder as a main raw material at a certain proportion. Capsanthin in natural chilies is used to provide the red pigment source for ornamental fish and is in a combined use with zeaxanthin to enable ornamental fish to form a good color. At the same time, due to the role of extrusion, the red chili powder is in high adhesion degree with other matters in the particles and will not have an adverse effect on water quality. The ornamental fish fed by this formula is fast in coloring, is normal in growth, and can improve the ornamental value of the ornamental fish at a low cost.

The invention discloses an agent for removing phosphorus in sewage. The agent is composed of the following raw materials in parts by weight: 8-14 parts of adina rubella hance, 3-6 parts of gypsum, 2-5 parts of millet bran, 10-25 parts of bauxite, 16-32 parts of coal ash, 10-35 parts of quick lime, 24-40 parts of ferric sulfate, 6-15 parts of activated carbon and 5-12 parts of graphite. The invention also discloses a preparation method of the agent. The raw materials are wide in source, the preparation process is simple, and the production equipment is low in investment cost, so that the agent is suitable for large-scaled industrial production. In the product, adina rubella hance is adopted to adsorb phosphorus. Phosphorus-containing compounds in the sewage are adsorbed by the activated carbon and graphite. The bauxite, ferric sulfate and lime are polymerized to generate a hydroxyl polymeric colloid and a precipitate of hydroxide, so that free phosphorus, organic phosphorus and compounds thereof, hydrogen phosphate, dihydrogen phosphate and the like in the sewage can be adsorbed and associated. The agent is good in treatment effect, does not affect the water quality and has a good social benefit.

The invention relates to the technical field of water purification, and discloses a high-efficiency PAP composite filter element. The high-efficiency PAP composite filter element comprises outer-layerPP cotton which is rolled into a barrel, middle-layer activated carbon and inner-layer PP cotton; the filter precision of the outer-layer PP cotton is greater than that of the inner-layer PP cotton,and the middle-layer activated carbon is formed by pressing a plurality of carbon fiber stacks. The filter element achieves a tertiary filter effect, and can be compatible to existing water purifier filter bottles in markets, the number of pipes and the number of filter bottles in a water purifier are reduced, the full filter element only needs to be changed once, and water quality cannot be affected later.

The invention discloses a multi-effect staged first rain storage pond. The multi-effect staged first rain storage pond comprises a flow dividing device, an artificial wetland and a sewage treatment plant, wherein the flow dividing device is used for collecting first rain and dividing the first rain into a storage pond group, and the artificial wetland is used for treating the first rain; the flow dividing device comprises a rainwater pipe network group which communicates with the artificial wetland and a first sewage pipe network which communicates with the artificial wetland and the sewage treatment plant; and the storage pond group comprises a plurality of water storage pools which are arranged on the rainwater pipe network group at intervals along the water flow direction, a plurality of first rain inlet pipes which are provided with second gates and correspondingly communicate with the water storage pools and the rainwater pipe network group respectively and a plurality of second sewage pipe networks which correspondingly communicate with the water storage pools and the first sewage pipe network respectively, and an integrated pump station is arranged in any water storage pool. According to the first rain storage pond, rainwater with different concentration gradients is stored in different water storage pools, and the rainwater in the water storage pools is not interfered with one another, so that the water quality of an integrally collected water body cannot be influenced by the water quality deterioration, and the sewage treatment cost is greatly reduced.

The invention provides a preparation method of a fluorosilicone film for treating high-salt wastewater. The preparation method comprises the following steps: (I) preparing a fluorosilicone polymer; (II) modifying nano-boron fibers; and (3) preparing the film. The invention further discloses the fluorosilicone film prepared by virtue of the preparation method. The preparation method disclosed by the invention is simple and feasible, low in cost, equipment dependence and requirements on reaction conditions and suitable for industrial production, and the raw materials are easily available. The prepared fluorosilicone film has the advantages that the preparation process is simple and easy in operation, the preparation cost is low, the mechanical property is excellent, the corrosion resistanceis good, the water flux and the salt removal rate are high, and the pollution resistance is good.

The invention discloses a wear-resistant rubber and plastic seal for water gates, and relates to the field of wear-resistant rubber and plastic seals for water gates. The wear-resistant rubber and plastic seal for the sluice includes a sluice gate, the top of the sluice gate is fixedly connected with a fastening mechanism, the left end of the fastening mechanism is clamped with a left rubber belt, and the other end of the left rubber belt is fixed A rubber sealing ring is connected, and the rubber sealing ring is clamped around the outer end of the water gate, and the other end of the rubber sealing ring is fixedly connected with a right-end rubber belt, and the other end of the right-end rubber belt is clamped on the fastening At the right end of the mechanism, the left end of the outer surface of one side of the rubber sealing ring is fixedly connected with a left elastic rubber belt, and the other end of the left elastic rubber belt is fixedly connected with an adsorption mechanism. The sluice uses wear-resistant rubber and plastic seals to increase the sealing performance, and the rubber seal ring is made of ultra-high molecular weight polyethylene material, which has good friction resistance, strong impact resistance, can absorb impact force, and is environmentally friendly and non-toxic.

The invention provides bream feed and a preparation method thereof. The bream feed is prepared from the following components: corn straw, soybean powder, rapeseed bran, rice bran, wheat, edible salt,soybean powder, composite minerals, 8-11 parts of a nutrient agent, plant essential oil, composite vitamins, auxiliary additives and water. By adopting the feed provided by the invention, breams can grow rapidly, the feed conversion rate is high and high in breeding benefit, and the immunity mechanisms and the stress resistance of the breams can be remarkably improved.