123 results about "Rubber Dams" patented technology

The invention discloses a black-odor river sewage treatment method which includes the steps: S1, arranging a drain grating at the upstream of a river and primarily intercepting sewage; S2, arranging a plurality of bio-filters in the river and adsorbing suspended matters in the sewage; S3, arranging a plurality of microporous aeration devices at the bottom of the river and taking out gas such as carbon dioxide and ammonia gas from water by laminar flow circulation; S4, placing compound microorganisms into the water to enhance water remediation capacity, improve water quality and decrease deposition of organic matters; S5, arranging artificial wetlands on two sides of the river and planting aquatic plants into the wetlands to improve purification effects; S6, arranging a carbon fiber aquatic plant matrix at the tail of the river to further adsorb suspended matters in tail water; S7, arranging a rubber dam at the downstream of the river, automatically regulating water level, enlarging the channel storage capacity of the river and prolonging sewage retention time. The method persists in integrated technology for restoring and treating a damaged aquatic ecosystem, and can be widely applied to the field of water environment treatment and ecological remediation.

The rubber-dam preferably has bag shape or it can be brought into bag shape by means of suited holder means, such that it can be well placed into the oral cavity. On its forward end it is rolled up and stretched onto a rubber-dam frame. The cover means of the rubber-dam can be cut open in the operating field. For sealing against gingiva, dental clips or teeth, it is provided with a glue coating or is suited for receiving an adhesive, respectively. The rubber-dam is easy to install, allows to isolate teeth and adjacent gingiva and requires no affixing clips traumatizing the teeth.

The invention discloses a river bed infiltration water purification technology used for repairing the water body of polluted city rivers, which follows that below the river beds of city rivers, the purification structure of a filler infiltration bed (3) is built, by utilizing water head (the height of water formed by artificial construction rubber dam or the natural height of water of river channels), polluted river water is transported to a water distribution system (2) by adopting a floating type water getting device (1), the river water to be treated is evenly distributed to the whole purification unit of the filler infiltration bed (3) by the water distribution system (2), and the river water after a purification treatment is discharged into the lower reaches of river channels by a water collecting system (4). The purification technology of the invention realizes an effective purification treatment on the river water simultaneously without occupying limited land resources at the two sides of the river channels, thus not changing the shape of the river channels, not influencing the flow of the river water, nor having any negative impact on the landscape effect of the two banks of the river channels.

The invention discloses a rubber dam vibration deformation and dynamic overflowing water level monitoring and analyzing system and method. The method includes the following steps that after an early warning and monitoring device is powered on, system initialization operation is carried out firstly; after initialization operation is finished, the early warning and monitoring device operates in a real-time high-speed on-line collection mode by default, a real-time data link is established between the early warning and monitoring device and an upper computer, various sensors are scheduled in real time to carry out data collection, the early warning and monitoring device achieves data interaction with the upper computer through an industrial field data bus interface unit, the data are integrated through the upper computer and then are led to a three-dimensional animation engine, and the working conditions of rubber on site can be restored in real time. The monitoring method is visual, accurate and fast, early warning response time is shortened greatly, accuracy of emergent early warning is improved greatly, and use risks of rubber dams to water conservancy users in the flood season are lowered. A maintenance-free design scheme is adopted for the whole monitor terminal, operation is stable and reliable, the installation structure is simple, construction is convenient to achieve, and equipment cost is low.

The invention relates to a production process of rubber dam bags, and particularly relates to a production process for manufacturing rubber dam bags by using polyester fabric as a framework material. Through dipping pretreatment of polyester fabric with water-soluble epoxy resin and tackifying process of the polyester fabric with resorcinol-formaldehyde-latex (RFL), transition matching with a sizing material of an adhesion layer and process parameter matching of the whole vulcanization process of the sizing material, the technical problems of low chemical polarity on the surface of the polyester fabric and difficult direct adhesion with the rubber are solved. Compared with the prior art, the rubber dam bags provided by the invention have the advantages of high strength, low elongation, good shape, light weight, aging resistance, good water resistance and convenience in transportation, installation and maintenance of dams, and possibility for producing rubber dam bags with high performance and improving the height of rubber dams is provided.

The invention discloses a novel rubber dam body. The novel rubber dam body is provided with a dam base, a pier wall and a rubber dam bag, wherein an anchoring device for anchoring the rubber dam bag comprises an anchoring bolt, a steel cushion plate, a bottom cushion sheet, a steel pressing plate and a compression nut; the anchoring bolt and the steel cushion plate are pre-buried in the dam base; the bottom cushion sheet is arranged on the steel cushion plate; two parallel inner pressing strips are arranged under the bottom cushion sheet; two parallel outer pressing strips are arranged under the steel pressing plate; the distance between the outer pressing strips is more than that between the inner pressing strips; a plurality of dam bag protecting plates are hinged on the dam base corresponding to the upstream of the rubber dam bag; the shape of the dam bag protecting plates is adapted to that of the rubber dam bag which is stretched; a water-isolating layer is arranged at the end part position of the inner cavity of the rubber dam bag; and a water inlet/outlet with small caliber is formed in the lower part of the water-isolating layer. Compared with the prior art, the novel rubber dam body has the advantages that the rubber dam bag is prevented from being loosened and worn, leakage of the rubber dam bag and damage to the rubber dam bag are reduced, the maintenance cost and the management cost of the rubber dam bag are reduced, and the rubber dam is enabled to normally run.

The invention discloses a highly cold-resistant rubber dam which is composed of materials as follows: raw rubber, a plasticizer, carbon black, an active agent and a vulcanizing agent; the weight ratio of the raw rubber to the plasticizer is 100/10-100/15; the raw rubber is composed of chloroprene rubber and natural rubber, and the weight ratio of the chloroprene rubber to the natural rubber is 90/10-80/20; and the plasticizer is butyl oleate, dibutyl sebacate, or a mixture of butyl oleate and dibutyl sebacate. Through tests, the brittleness temperature of the high cold-resistant rubber dam can achieve subzero 50 DEG C, the cold resistance is good, physical and mechanical properties of the tensile strength, the elongation at break and the like can also meet industrial standards, and requirements for the water conservancy industry on low temperature resistance and physical and mechanical properties of rubber dams in high cold temperature environments can be met.

The invention discloses an ecological dam for aeration and slag blocking. The ecological dam comprises a rubber dam bottom, an on-dam frame, an upstream slag blocking plate, a downstream guard plate, a crossing floating bridge, floating bed bodies, a plastic film, wheat straw roller shutters, a scum tank, an aeration system and a photovoltaic wind energy generating system; the rubber dam bottom is of a bag type structure, high-strength synthetic fabric is adopted as a stressed framework of the rubber dam bottom, rubber is applied to the inner side and the outer side of the rubber dam bottom as protective layers, the two ends of the rubber dam bottom are fixed to a river bank, and the rubber dam bottom is expanded by filling water or inflating gas; the on-dam frame is arranged on the rubber dam bottom and is made of wood or welded through stainless steel materials, the lower half portion of the on-dam frame is made to be of a cuboid structure, and the upper half portion of the on-dam frame is made to be of an arc structure; the upstream slag blocking plate is arranged at one side of the upstream of a river, the downstream guard plate is arranged at one side of the downstream of the river, and the floating bed bodies are distributed on the water surface defined by the upstream slag blocking plate and the downstream guard plate; the floating bed bodies are made of wood, bamboo poles, nylon ropes, steel wires and filler blocks, and the aeration system comprises an aeration pump, a gas inlet pipe, a gas distribution pipe and aeration heads.

A flexible rubber dam is provided, comprising a rubber dam, wherein a division part is formed in the middle of a flexible rubber dam to radiate a free end up and down, and an additional part is formed at the other end of a rubber beam of a rubber sheet. The division part is surrounded by reinforced fiber layers, and the rubber beam is arranged across stream of water. A flexible rubber dam is vertically placed or turned over by injecting and discharging air, and an adhesive member is spread in an outer surface of the rubber beam. A color cover layer is formed by entirely injecting normal temperature curable color liquid material made of polyurethane or urea on the surface of the adhesive member. The flexible rubber dam can easy up and prevent the flexible rubber dam from damaging under the long function of UV and ozone using a great variety of coloured reinforcing agents, and each color is harmony with the periphery landscape.

The invention discloses a rubber dam forming technology. It includes the following steps: rolling the rubber, canvas into rubber cloth; processing staggered array for the at least two layers of rubber cloths to form dam sheet; orderly jointing and curing to form rubber dam. Thus the invention can greatly reduce water leak probability,and make stress evenly.

The invention discloses a TOP LED packaging with UV packaging glue and a packaging process thereof. The LED packaging includes a substrate, an LED light-emitting part, and a lens. The substrate is provided with dam glue, and the LED light-emitting part is welded at the center of the substrate. Located inside the dam glue, the dam glue is injected with UV glue, the lens is covered on the cured UV glue, the edge of the lens and the inner wall of the dam glue are sealed, and the surface of the lens is coated with a layer of AR coating. The packaging glue used in the LED packaging of the present invention adopts a new UV glue, and the glue is directly cured by UV, thereby replacing the traditional stirring and baking process.

The invention discloses a special pollution cleaning device for a river of rubber dam engineering and an application method of the special pollution cleaning device. The pollution cleaning device comprises a pollution cleaning valve, a floating dam bag and a connecting rod; one end of the connecting rod is movably connected with the floating dam bag through a connecting ring; the other end of theconnecting rod is movably connected with a perforated anchor bolt through another connecting ring; the perforated anchor bolt is anchored on a concrete base plate; the upstream side of the floating dam bag is provided with the rightwards-reversed H-shaped pollution cleaning valve; the direction of a notch of the pollution cleaning valve is flush with the extension direction of the floating dam bag; and the two ends of the pollution cleaning valve are each provided with an operating rope. The special pollution cleaning device disclosed by the invention is designed according to the characteristics of a rubber dam, can achieve an effect of cleaning the pollutions of the river, can be matched with the functions of the rubber dam, does not affect water overflowing or flood discharge, and also has the advantages of being simple in structure, simple to operate, convenient to control, relatively low in construction cost, good in river pollution cleaning effect and the like.

The invention provides an ultrahigh-elasticity photocured temporary resin composition as well as a preparation method and application thereof. The composition contains the following components in parts by weight: 15-45 parts of an acrylate compound, 1-10 parts of an acrylate cross-linking agent, 10-70 parts of an acrylate active diluent, 2-10 parts of a thickening agent, 0.5-4 parts of a photoinitiator and 0.01-0.1 part of a stabilizer. By virtue of the cooperation of specific aids such as the acrylate cross-linking agent and the acrylate active diluent, the finally prepared photocured temporary resin is moderate in flexural strength and high in elasticity modulus, can be used for partially replacing a rubber dam and is easy and convenient to use. In the use process, a to-be-covered part is coated with the composition, the composition can be cured within several seconds so as to finish the cover isolation, and after the operation of an oral cavity is finished, the composition can be directly torn down by a hand, so that the composition is favored by dentists, and the industrial blank is filled up.

Tensiometer device for measuring soil water tension. A pair of screws secures a load cell or strain gauge to an inner frame, a dowel pin transmits force to the load cell, a polymer chamber is enclosed on one side by a rubber dam that retains the polymer within the polymer chamber, and a hydrophilic porous window covers the rubber dam. A second pair of screws secure an outer frame to the inner frame holding the components of one or more tensiometers spaced across the frame, and an end cap. The load cell acts as a strain gauge transferring the force exerted on it as a change in electrical voltage that can be converted to a soil water tension (SWT) measurement.

The invention discloses a dam bag mounting construction method for an inclined wall type rubber dam, and belongs to the field of water conservancy and hydropower and municipal engineering. During dam bag unfolding, a dam bag is fixed on the dam side, and the whole dam bag is horizontally unfolded along the bottom of the dam; a separating pier is arranged on each of the upper stream and the lower stream of the dam; one end of the dam bag is fixed through the separating piers, and the other end of the dam bag is dragged by two excavators arranged at the upstream and the downstream; an inclined wall embedded part is arranged at a position which is far away from the top end of the dam by 10cm; a hoist crane is fixed on the inclined wall embedded part; the upper end of the dam bag is fixed on the hoist crane, and the lower end of the dam bag is connected with a clamp for clamping the dam bag; operators standing on a step pull the hoist crane simultaneously to upwards lift the dam bag until the dam bag is flatly paved at an inclined wall section; holes are formed in the dam bag according to distances of inclined wall embedded bolts, and the dam bag is fixed through the bolts and nuts. The dam bag mounting construction method is easy to operate and short in working period; engineering cost, such as machinery cost and material cost, is reduced; the dam bag can be positioned in place; the difficulty in spreading and unfolding the dam bag which is heavier than 30 tonnages is avoided, and the problems of non-flat unfolding, movement in a spreading and unfolding process and the like are solved.

The invention discloses a production process of a seamless rubber dam bag, relates to the production process of the high-strength seamless rubber dam bag and provides the production process of the seamless rubber dam bag which have the advantages of high structural strength, overall flatness, convenience in anchorage and capability of avoiding the emergence of resonance effect during the use. A long blank comprising outer-layer glue, intermediate-layer glue, inner-layer glue and a framework layer is adopted, and the processing comprises the following steps of (1) preparing joints (2) performing primary vulcanization; (3) cutting; (4) lapping, and (5) performing secondary vulcanization. According to the production process disclosed by the invention, the vulcanization is performed twice, the vulcanization is firstly performed on the middle part of the long blank and raw edges are left on the two sides; then the cutting is performed, and short blanks are obtained after cutting; the two side edges of the short blanks are of the raw edges, the joints in the complementary shapes are also arranged on the two side edges, the joints of the two short blanks are butted, the secondary vulcanization is performed, and the adjacent raw edges of the adjacent two short blanks are vulcanized to vulcanized edges, namely the material is consistent with that of the middle part after vulcanization; and a bag body of the rubber dam bag with a radial seam is finally prepared.

The invention discloses a novel rubber dam body, which comprises a dam base located on the bottom part of a riverbed and constructed by concrete, rubber cloth and pier walls arranged on the dam base at intervals. A plurality of bolts are pre-buried on two sides of the pier walls and the dam base; the rubber cloth is fixed onto the dam base and the pier walls through a sealing and pressing mechanism; and the sealing and pressing mechanism comprises rubber gaskets sleeving on the bolts, pressing pillars pressing on the rubber cloth and sleeving on the bolts, and screw caps in threaded connectionwith the bolts. The novel rubber dam body provided by the invention is easy to press the bolts, uniform in stress distribution, good in sealing effect, not easy to damage a dam bag, and particularlysuitable for a dam height exceeding more than 7m.

The invention relates to a floating rubber dam. The floating rubber dam comprises a floating box, and a dam bag; wherein the floating box is used for being placed at the bottom of water, the side wallof the floating box is provided with a filling and discharging pipe, the top of the floating box is provided with a ventilation pipeline, and the ventilation pipeline extends out of the water surface; and the dam bag is connected to the top of the floating box. According to the floating rubber dam, the floating box sinks by filling water in the floating box through the filling and discharging pipe; the water can be injected into the dam bag to enable the dam bag to be inflated to control water flow, and the water in the dam bag is discharged through the filling and discharging pipe to enablethe dam bag to be shrunk, so that navigation is restored; and the floating rubber dam is not limited by construction conditions, replacement and maintenance are convenient, and the damage or influenceon surrounding buildings caused by construction excavation is reduced.

The invention relates to a rubber dam and a mounting technology thereof, and belongs to the technical field of equipment and mounting technologies of retaining dams. The rubber dam comprises a dam bag and a protection device arranged on the outer surface of the dam bag. The two sides, in the length direction, of the dam bag are fixed to a foundation through two anchoring pieces. The protection device comprises a plurality of protection plates connected in sequence. The protection plates close to the two anchoring pieces are provided with a plurality of spaced connecting bands. One ends of the connecting bands are fixed to the foundation through the anchoring pieces. The rubber dam is reasonable in structural design and good in protection effect, a protection layer is not prone to falling off, and the mounting technology is simple.

The invention belongs to the field of ecological management of water quality of riverways and in particular relates to a method and a device for repairing ecology of a riverway by using rubber dams and an ecological floating island. The method comprises the steps of controlling the water level between an upper limit value and a lower limit value and controlling the water quality above the set state water quality standard. The device at least comprises an upstream rubber dam, a downstream rubber dam, a gas pipeline, a gas transmission station, an online water level monitoring device, an online water quality monitoring device, the ecological floating island and a rotating device. The technical scheme has the beneficial effects that the gas transmission station is controlled by the online water level monitoring device to inflate or deflate the rubber dams to automatically control the water level of the riverway between the upstream rubber dam and the downstream rubber dam, so that growth of plants planted on the ecological floating island is facilitated; the rotating device is controlled by means of the online water quality monitoring device, so that when the water quality is relatively good, the ecological floating island does not rotate, and the blockage of water body is reduced; when the water quality is relatively poor, the ecological floating island rotates, so that the contact area of plants and water is increased, and the dissolved oxygen in the water is increased.