6 results about "Asbestos cement" patented technology

The utility model discloses an underground well interface anti-seepage structure, which is characterized in that asbestos cement filled in a gap between an underground pipeline and a rigid waterproof sleeve is used as a first rigid anti-seepage measure, so that a liquid medium in an underground well chamber cannot leak outwards from the gap between the underground pipeline and the rigid waterproof sleeve; moreover, the rubber sealing element is arranged to serve as a flexible second anti-seepage measure, so that when the first anti-seepage measure is damaged, the liquid medium leaked from the gap is blocked by the small-diameter pipe part of the rubber sealing element which is fixedly arranged outside the underground pipeline in a sealing and sleeving manner; furthermore, the liquid medium in the underground well chamber is prevented from leaking outwards through a connector between the underground pipeline and the underground well chamber, and environmental pollution caused by leakage is avoided. The device is suitable for any underground pipeline well chamber system, and has the advantages of low cost, simplicity in installation and construction and wide application range.

The utility model belongs to the technical field of asbestos cement production, and particularly relates to a multifunctional screening device for asbestos cement products, which comprises a screening box and a drying and scattering box. The top of the screening box is fixedly connected with the bottom of a drying and scattering box, the top of the drying and scattering box is connected with a feeding hopper, one side of the drying and scattering box is fixedly connected with an output motor, the output end of the output motor is fixedly connected with a movable column, and the surface of the movable column is fixedly connected with a plurality of scattering rods. Heating plates are fixedly connected to the two sides of the interior of the drying and scattering box; the screening device solves the problems that when an existing screening device for the asbestos cement products is used for screening particles of the asbestos cement products, the particles of the asbestos cement products can be agglomerated in a humid environment and can be stacked and adhered to a screening plate when the screening device is used for screening the particles of the asbestos cement products, and the screening plate can be blocked; and therefore, screening of particles of the asbestos cement products is affected.

The utility model discloses a construction site waste recovery box, which belongs to the technical field of waste recovery, and comprises a crushing box, a water inlet pipe and a water tank are communicated, a water outlet of a water pump is fixedly connected with a water outlet pipe, one end of the water outlet pipe far away from the water pump is fixedly connected with a shunt pipe, and four flow pipes are fixedly communicated with atomizing nozzles. According to the waste recycling box for the construction site, water in a water tank is absorbed and transferred through operation of a water suction pump, a water inlet pipe and a water outlet pipe, water is transferred to the top of a feeding hopper through cooperative use of a flow dividing pipe and a water collecting pipe, and then the water is obliquely and downwards sprayed into a crushing box through cooperative use of a flowing pipe and an atomizing spray head; part of the water mist is left in the crushing box, and part of the water is in contact with the asbestos cement board in the crushing box, so that asbestos board dust formed in the crushing process is wetted through a water spraying, pre-soaking or wet crushing method, the dust flying capacity is reduced, and asbestos fibers are prevented from entering air.

This utility model belongs to the field of sleeve sealing technology, and provides a sleeve structure for sealing concrete water tanks, including a sleeve with a water-stopping wing ring; the sleeve is coaxially fitted inside the perforation in the tank wall; a through-wall pipe is coaxially fitted inside the sleeve, and an annular cavity is formed between the through-wall pipe and the sleeve. Within the annular cavity, along the direction from the inner to the outer side of the tank wall, a limiting ring, an asbestos cement ring, an oil-impregnated hemp ring, another asbestos cement ring, and a sealant ring are sequentially arranged. This sleeve structure, through the design of a multi-layer sealing material composed of non-toxic sealant, asbestos cement, and oil-impregnated hemp, and a composite waterproof membrane formed by a three-layer anti-corrosion layer and a waterproof membrane, significantly improves waterproof performance. The use of stainless steel tube bundles and steel ferrules ensures a tight connection between the various layers of materials, preventing gaps from forming between the tank wall and the through-wall pipe due to thermal expansion and contraction, thereby preventing water leakage.

The application relates to the technical field of structural members, and particularly discloses a high-strength gypsum batten with pressure resistance and folding resistance, which comprises a batten main body and a plurality of folding resistance assemblies equidistantly distributed along the width direction inside the batten main body, the folding resistance assemblies are arranged between adjacent holes, a single folding resistance assembly comprises first and second buffer plates which are parallel to each other, first and second V-shaped frames which are alternately and oppositely arranged between the first and second buffer plates, and a first buffer column which is connected to the inner sides of the first and second V-shaped frames through arc fixing claws, and the outer side of the second V-shaped frame is connected to a second buffer column through an arc fixing claw, and the outer side of the first V-shaped frame is connected to a third buffer column through an arc fixing claw; the batten main body is composed of gypsum, hemihydrate gypsum, asbestos cement, composite fibers, modified hardening fillers and the like, the folding resistance assembly effectively improves the folding resistance of the gypsum batten, and the batten main body raw material formula also improves the pressure resistance and folding resistance of the gypsum batten.

The invention relates to the technical field of structural members, and particularly discloses a pressure-resistant and fracture-resistant high-strength gypsum batten which structurally comprises a batten body and a plurality of fracture-resistant assemblies distributed in the batten body at equal intervals in the width direction, the fracture-resistant assemblies are arranged between adjacent holes, and each fracture-resistant assembly comprises a first buffer plate and a second buffer plate which are parallel up and down; a first V-shaped frame and a second V-shaped frame are alternately and reversely arranged between the first V-shaped frame and the second V-shaped frame, the inner sides of the first V-shaped frame and the second V-shaped frame are connected and share a first buffer column through cambered surface fixing claws, and a second buffer column and a third buffer column are connected above the outer side of the second V-shaped frame and below the outer side of the first V-shaped frame through cambered surface fixing claws respectively; the batten body is composed of gypsum, semi-hydrated gypsum, asbestos cement, composite fibers, modified hardening filler and other raw materials, the fracture resistance of the gypsum batten is effectively improved through the structural design of the fracture-resistant assembly, and meanwhile the compression resistance and fracture resistance of the gypsum batten are improved in an auxiliary mode through the batten body raw material formula.