340results about How to "Reduce Waterlogging Problems" patented technology

The invention discloses an intelligent dust concentration limit setting spray dust settling device. The device comprises a control unit, a dust concentration sensor, an electromagnetic valve and a sprinkler head, wherein the signal output end of the dust concentration sensor is connected with a signal input end of the control unit; a control signal output end of the control unit is connected with a control signal input end of the electromagnetic valve; and the control unit realizes spray control over the sprinkler head through the switching of the electromagnetic valve. In the device of the invention, the dust concentration limit is manually set; the spraying starts when the dust concentration limit exceeds an upper limit value and stops when the dust concentration limit is less than a lower limit value; and thus the meaningless waste of water resource is prevented, the water logging in roadways is reduced, the working conditions are improved and the health and the safety of mine workers are ensured. In addition, the invention also discloses an intelligent dust concentration limit setting spray dust settling system, so the remote on-line monitoring of the dust concentration can be realized; meanwhile, the invention also discloses an intelligent dust concentration limit setting spray dust settling method.

The invention relates to a preparation method of a cast aluminum alloy film coat, which is characterized by cleaning a cast aluminum alloy component firstly, performing chromate oxidation treatment secondly, and then preparing a film sealing coat of fluorine containing acrylicester on a chromate oxide film. Construction methods such as brushing or spraying is used for the invention, the methods are flexible and simple and has high maneuverability; the invention can be applied in the protective treatment for cast aluminum alloy of ZL102, ZL104, ZL107, ZL112, ZL114 and the like, and is particularly suitable for treatment of the cast aluminum alloy component used in the ocean environment; and the invention is also suitable for the protective treatment of other aluminum alloy materials or components, such as treatment of duralumin, super duralumin, wrought aluminum and rust-proof aluminum alloy.

A water recovering system for the rain is built up through drilling the vertical overflow channels with a certain depth passing through the water impervious stratum, filling the broken stone, sandy earth and water permoable substance in them, preburying the water collecting tanks communicated with said overflow channels, arranging the water-pumping pipe between ground surface and water collecting tank, and laying a water permeable layer on the broken stone layer. It can collect the rain to supplement underground water and supply the collected rain for other purposes.

The invention discloses an environment-friendly and energy-saving courtyard type rain water collecting, treating and recycling system, and specifically relates to the environment-friendly and energy-saving courtyard type rain water collecting, treating and recycling system which is suitable for an arid area and a semi-arid area. The environment-friendly and energy-saving courtyard type rain water collecting, treating and recycling system is characterized by comprising a rain water collecting pool, a flow distributing well, a flow releasing pool, a constructed wetland, a rain water storing pool, a sand filtering pool and a clean water pool, wherein the upper-layer rain water collecting pool, the flow distributing well, the constructed wetland and the sand filtering pool are connected in sequence, the lower-layer flow releasing pool, the rain water storing pool and the clean water pool are connected in sequence, the flow releasing pool is located under the rain water collecting pool, the rain water storing pool is located under the flow distributing well and the constructed wetland, and the clean water pool is located under the sand filtering pool. According to the environment-friendly and energy-saving courtyard type rain water collecting, treating and recycling system disclosed by the invention, the occupied area is small, the energy consumption is low, the operating cost is low, and the maintenance is simple; the functions of beautifying a courtyard and purifying air are obtained as green ecological plants are planted on the constructed wetland; the courtyard waterlogging can be reduced, environmental pollution caused by initial rain water can be reduced, the living standard of a farmer can be increased, and meanwhile, the rural ecological environment can also be effectively improved.

The invention discloses no-fines recycled-aggregate pervious concrete for district roads and a preparation method and belongs to the field of pervious concrete. The no-fines recycled-aggregate pervious concrete is prepared from the components as follows: 1450-1600 kg/m<3> of recycled building concrete aggregate, 300-450 kg/m<3> of cement, 78-117 kg/m<3> of composite mineral admixture, 3.8-5.6 kg/m<3> of an additive and 105-145 kg/m<3> of water. The water permeability of the prepared pervious concrete is not less than 5 mm/s, the continuous porosity is not less than 10 percent, the compressive strength is not less than 20 MPa, the rupture strength is not less than 2.5 MPa, and the mass loss rate after 25 times of freezing and thawing cycles is at most 5 percent. The recycled aggregate with the concrete structure is utilized, the pervious concrete can improve environment, and the both are combined so as to change waste into wealth, conserve energy, reduce emission, reduce impounded surface water in a rainy day, supplement ground water, and reduce the urban heat island effect. The preparation method is simple, efficient, green and environment-friendly and suitable for reconstructing and constructing of roads in urban residential districts.

The present invention discloses a boat type furrow opener. The upper portion of furrow opener body is closed, front breast form of furrow opener body along furrow-opening direction is front portion of said boat body, left and right two sides are symmetrically crossed in the intermediate blade edge, said blade edge is inclined backward from top to bottom, the upper portion of the furrow opener body is equipped with a spacing plate. Besides, said furrow opener also is equipped with soil-covering plate, fertilizer and fertilizer-discharging tube, etc. Said boat-type furrow opener mainly is used for deep fertilizer application in paddy field.

The invention mainly discloses an overpass rainwater recovery system and its installation method. Its technical proposal includes a bridge deck and a bridge pier. There is a first drainage pipe connected to the filter, the filter is connected to the underground water tank through the clean water pipe, the top of the pier is provided with a first collection bucket, and the bottom of the pier is provided with a second collection bucket connected with the first collection bucket, The second collecting bucket is connected with the filter through the downpipe. The invention has simple structure and convenient installation, can quickly collect and store rainwater generated during rainfall or road sprinkling, improve drainage efficiency, filter and purify rainwater before storage, improve water resource utilization efficiency, and solve water pollution problems. The collecting bucket and the second collecting bucket prevent rainwater from entering the inside of the bridge pier, effectively preventing rainwater from corroding the bridge pier or affecting the appearance, and are easy to apply and promote.

The invention relates to a light-emitting diode (LED) tunnel lamp, which comprises LED lamp caps, a front cover, a radiator and a tail cover. The LED lamp caps respectively consist of a substrate, a plurality of single chip LEDs, a lamp cap seat and a lens. The radiator consists of two eudipleural lambdoidal hollow cylindrical objects and fins respectively arranged on convex surfaces of the hollow cylindrical objects; the LED lamp caps are respectively arranged on lambdoidal angular surfaces of nearly symmetric axis on concave surfaces of the hollow cylindrical objects of the radiator; and the front cover and the tail cover are fixedly arranged on the radiator through screws. The LED tunnel lamp has the following advantages: 1, under the action of an open illumination chamber, light distribution of the LED lamp caps is even, and the light intensity is enhanced; 2, natural ventilation channels are additionally arranged on the radiator, and therefore, power consumption-free heat dissipation is realized, the junction temperature of the LED tunnel lamp is reduced, and the light decay speed of the LED tunnel lamp is reduced; and 3, a shell-type structure of the front cover and a shell-type structure of the tail cover are communicated with the outside through an upper space and a lower space, and therefore, the LED tunnel lamp is ventilated without accumulated water, the working environment of the LED tunnel lamp is improved, and the service life of the LED tunnel lamp is greatly prolonged.

The invention discloses a road rainwater collecting system for preventing surface gathered water. The road rainwater collecting system comprises a sidewalk surface (1) made of a seepy material, water drainage road side stones (3) arranged between the sidewalk surface (1) and a motor vehicle surface (2), and water storage tanks (4) arranged on the lower sides of the sidewalk surface (1) and the water drainage road side stones (3), wherein the sidewalk surface (1) is lower than a motor vehicle surface (2) or parallel to the motor vehicle surface (2). By utilizing the rainwater collecting system, the technical problem that water can be accumulated on the conventional road surface, particularly a motor vehicle surface, can be solved.

The invention relates to a defrosting pan for a fan coil of a ship. The defrosting pan comprises a defrosting pan body, wherein the two ends of the defrosting pan body are provided with condensation drainage joints; a water eliminator is covered above the defrosting pan body; the shape of the water eliminator is matched with the defrosting pan body; and the water eliminator is provided with a plurality of water inlet holes which are communicated with a cavity in the defrosting pan body. Under the condition that the fan coil cannot be kept in the horizontal state, condensed water can be drained from one of the condensation drainage joints at the two ends of the defrosting pan body, so that water accumulated inside the cavity of the defrosting pan is reduced effectively; under the condition that the fan coil swings and condensed water in the cavity of the defrosting pan cannot be drained smoothly, swinging condensed water is blocked by the water eliminator at the upper end of the defrosting pan body and is kept in the defrosting pan body, so that leakage is prevented; the defrosting pan has a simple and compact structure; and condensed water in a fan coil unit can be drained smoothly in the running and parking processes of the ship, and leakage of the condensed water can be prevented effectively when the ship swings.

The invention discloses a Chinese medicinal composition for treating hydrocephalus and relates to the technical field of Chinese medicines. The Chinese medicinal composition is prepared from 12 pure natural Chinese herbal medicines, namely rhizoma alismatis, ephedra, motherwort herb, leech, sliced deerhorn, plantain seed, agaric, astragalus, red paeony root, the root of bidentate achyranthes, liquoric root and calculus bovis artifactus in a specified ratio. The Chinese medicinal composition for treating hydrocephalus has an obvious curative effect, and is quick in response, and the course of treatment is short. The invention also provides a preparation method for the Chinese medicinal composition for treating hydrocephalus; and the preparation method is simple, so the Chinese medicinal composition is suitable for industrial production.

The invention provides a fin which comprises a plurality of straight line segments and a plurality of circular arc segments. The straight line segments approximately present the shapes of straight lines, and the circular arc segments connected with the straight line segments approximately present the shapes of circular arcs. A central angle c of each circular arc segment is smaller than or equal to zero DEG and is equal to or larger than 150 DEG, and the semi-diameter R of each circular arc segment is smaller than or equal to 0.35mm and is equal to or larger than 1mm. By adopting the above structure, the fin effectively reduces accumulated water, thereby improving the heat exchanging performance.

The invention relates to a method and system for detecting the drainage state of a drain pipe. The method for detecting the drainage state of the drain pipe comprises the following steps: acquiring the amount of precipitation of a drain pipe position at a predicted time point, and calculating the water velocity of the drain pipe position according to the amount of precipitation; inputting the water velocity into a preset drainage information prediction model, and reading a predicted water depth and a predicted cross-sectional area which are output by the drainage information prediction model; detecting whether the water discharge corresponding to the predicted time point exceeds the drainability of the drain pipe according to the predicted water depth and the predicted cross-sectional area; if so, judging the drain pipe to be in an overload drainage state at the predicted time point; the method can accurately detect the drainage state of the drain pipe at the predicted time point; the valves of a drain pipe network can be opened by relevant working staff in advance, or pump station equipment is additionally arranged at the drain pipe position to control the drainage of a water flow at the crest value and reduce the probability of occurrence of water accumulation.

Disclosed is a double track heavy hanging folding door which comprises a door body and a combined fixed frame located on the periphery of the door body and used for mounting the door body. The door body comprises a first folding door body and a second folding door body which oppositely join together and have the same structure, wherein the first folding door body comprises a plurality of folding door leaf units rotatably connected together. The combined fixed frame comprises an upper combined sliding way and a lower combined sliding way which are located on the upper portions and the lower portions of the folding door leaf units correspondingly and slidably matched with the folding door leaf units. Vertical edge frames rotatably connected with the folding door leaf unit on the outmost side are fixed to the two corresponding ends of the upper combined sliding way and the lower combined sliding way. According to the double track heavy hanging folding door, the larger span and opening space are achieved, bearing capacity is higher, pushing and pulling are quite flexible and easy, using is convenient, sealing performance is good, waterproof performance is high, wind pressure resistant performance is high, and the appearance is concise and harmonious.