40results about How to "Increase rebound strength" patented technology

The invention discloses a solid control system applied to a desert oil drilling process. The solid control system applied to the desert oil drilling process comprises a sieving box, a vibration motor, a supporting plate and a blowout prevention device. A feeding opening is formed in the position above one end of the sieving box, the other end of the sieving box is provided with a solid phase discharging opening, the sieving box is internally provided with a screen cloth frame, the screen cloth frame is internally provided with screen cloth, a liquid phase discharging box communicated with the sieving box is arranged below the solid phase discharging opening, the bottom of the liquid phase discharging box is provided with a liquid phase discharging opening, the side face of the liquid phase discharging box is connected with an exhaust column, the exhaust column is connected with an exhaust fan, and a plurality of spring baffle devices are arranged on the screen cloth frame at equal intervals in the direction from the feeding opening to the solid phase discharging opening. By means of the solid control system, after drilling fluid knocks the screen cloth, the liquid phase separated from solid phase particles enters the position below the screen cloth more easily, the screen cloth cannot be blocked, the handling capacity of a drilling fluid vibrating screen to the drilling fluid is increased, knock impulsive force generated when the drilling liquid knocks the screen cloth is increased, and the solid phase particles can be separated from the liquid phase more easily.

The invention belongs to the technical field of cleaning supplies, and particularly relates to a carpet retracting device. The carpet retracting device aims to solve the problems that in the long carpet retracting process in the prior art, most of carpet retracting is manually operated, and dust, sundries and the like on the surfaces of the carpets are mostly directly collected into the carpets. According to the scheme, the carpet retracting device comprises a rack, a supporting frame is fixedly installed at the top of the rack, rolling wheels are installed on the two sides of the rack throughbearings, multiple pairs of guide rollers are installed inside the rack through bearings, a top cover is installed at the top of the rack through a hasp lock and a hinge, and a cover body is fixedlyinstalled at the top of the top cover. According to the carpet retracting device, by means of resilience of a movable rod and an elastic pressing rod, in cooperation with deformation swing of an elastic loosening mechanism, dust, sundries and the like in gaps of decorative surfaces of the carpets are removed and fall off at a partition plate, then the cleaning work of the carpets is completed in the carpet retracting process, the carpets can be conveniently used next time, the carpet retracting efficiency is improved, and the labor amount of workers is reduced.

The invention relates to the technical field of rubber gaskets, and in particular to a wear-resistant type gasket formula and a preparation method. The preparation method comprises the wear-resistanttype gasket formula and steps of plastication, mixing, preparation for vulcanization, compression moulding and vulcanization forming. The wear resistance and compressive resilience force of the rubbergasket are effectively increased, so that the gasket can play a better cushioning role in equipment.

The invention discloses a device for separation of a solid phase and a liquid phase in drilling fluid. The device comprises a sieve box, a vibration motor, tension springs, a blowout preventer and a shield. Two ends of the sieve box are provided with a feeding port and a discharging port respectively, a sieve frame and a coarse screen are arranged in the sieve box, a fine screen is arranged below the coarse screen, concave grooves are formed between the coarse screen and the fine screen and provided with through holes and extend from the discharging port to the feeding port, and a liquid phase receiving plate is arranged in the concave grooves and parallel to the coarse screen. The device further comprises studs which pass through the through holes of the concave grooves to penetrate the liquid phase receiving plate, and a plurality of spring stop devices are arranged at equal intervals on the sieve frame. The device has the advantages that in an early stage of exploitation, screening speed of the liquid phase in the drilling fluid is increased, and treatment capacity of a drilling fluid vibration sieve is improved; in a later stage of exploitation, even solid-phase particles are smaller in size, the drilling fluid can be screened by the screens, and accordingly separation efficiency of the drilling fluid vibration sieve is improved.

The invention discloses a basalt fiber composite novel wall material and a preparation method thereof, wherein the basalt fiber composite novel wall material is prepared from the following raw materials by weight: 0.6-0.8% of basalt fiber yarns, 0.3-0.7% of basalt fiber grid cloth, 24-25% of fast hardening sulphoaluminate cement, 40-45% of river sand, 1-3% of screw thread steel, 5-7% of reinforcing steel bars, 2-5% of channel steel, 0.3-0.4% of flame-retardant foam, 13-15% of water, 0.24-0.3% of expanded perlite, 2.9-3.2% of an adhesive, 0.12-0.15% of an early strength agent or a retarder, 0.6-0.8% of a styrene-acrylic emulsion, 0.24-0.26% of ferrous sulfate, 0.49-0.51% of calcium and magnesium powder, and 0.98-1% of a concrete surface reinforcing agent. According to the invention, the wall material prepared from the components according to the specific ratio according to the architectural conventional method has characteristics of uniform thermal expansion and cold contraction, goodtoughness and breakage resistance, has weak alkality so as not to easily corrode iron, aluminum and other metal materials, further has advantages of light weight, environmental protection, high strength, good toughness and low energy consumption, can be freely modeled according to molds, and is suitable for popularization in the building material field.

The invention provides a quick-change lock and an agent applying machine specially for cotton by means of the quick-change lock. The quick-change lock comprises a connecting base, a movable pin, an elastic part and a tube sleeve; the connecting base is fixedly connected with the tube sleeve, the elastic part is arranged in the tube sleeve, and the movable pin penetrates the tube sleeve in the axial direction and extends into the connecting base; the end, away from the connecting base, of the elastic part is fixedly connected with the tube sleeve, and the end, close to the connecting base, of the elastic part is fixedly connected with the movable pin; the movable pin can move in the axial direction in the tube sleeve, and a spraying device is fixedly connected to the lower portion of a spraying cantilever through the quick-change lock; a connecting column is arranged on a branch device, the cross section of the connecting column is in the same shape and size as a running hole in the connecting base, multiple through holes are formed in the upper end of the connecting column, and the diameters of the through holes are equal to the diameter of the movable pin. The quick-change lock and the agent applying machine specially for the cotton by means of the quick-change lock have the advantages that installation is easy, operation is convenient, a spraying mechanism can be quickly changed, adjusting operation is easy and fast, the agent applying area is broad, the cost is low and the efficiency is high.

The invention provides a small intelligent floor sweeping robot with a protection function. The small intelligent floor sweeping robot with the protection function comprises a floor sweeping robot body, a motor is fixedly installed on the inner wall of the top of the floor sweeping robot body, and a rotating shaft is fixedly installed at an output shaft end of the motor. The small intelligent floor sweeping robot is reasonable in design and good in practicability, impact force borne by the floor sweeping robot body can be effectively buffered and damped, the effective anti-collision protection effect on the floor sweeping robot body is achieved, the service life of the floor sweeping robot body is prolonged, and when the floor sweeping robot body collides with a wall or furniture, a plurality of first arc-shaped paddles and a plurality of second arc-shaped paddles are quickly rotated and unfolded and are in contact with the wall or furniture, so that the floor sweeping robot body can deviate or steer, the situation that the floor sweeping robot body collides with a corner or furniture with a small space and is clamped and cannot move is avoided, and the sweeping robot body can continue to clean the ground.

The invention provides an aqueous curing agent and a waterborne epoxy resin composition, and an application thereof in a high-permeability waterproof reinforcing coating. The waterborne epoxy resin composition comprises, by weight, 100 parts of epoxy resin, 5-30 parts of a reactive diluent, 130-170 parts of an aqueous curing agent and 1-5 parts of a permeation enhancer. The aqueous curing agent isprepared through a reaction of phenol, polyetheramine, polyamine and formaldehyde according to a molar ratio of the phenol to the polyetheramine to the polyamine of 1:(0.8-1):(0.8-1.5), and is obtained through the following steps: performing a primary Mannich reaction on the phenol, polyetheramine and a first part of formaldehyde same to the polyetheramine in molar weight; and performing a secondary Mannich reaction on the remaining phenol, the obtained polyetheramine-phenol reaction product, the polyamine compound and a second part of formaldehyde, wherein a molar ratio of the polyamine compound to the second part of formaldehyde is 1:(1-1.2); and the molecular weight of the polyetheramine is 1000 to 2100.

The invention belongs to the technical field of plastic modification and processing and in particular relates to toughened antistatic dual-functional plastic master batch capable of being directly used for injection molding of a plastic product and a preparation method of the toughened antistatic dual-functional plastic master batch. The dual-functional plastic master batch is prepared from the following components in percentage by mass: 75.0 to 83.0 weight percent of a vinyl elastic ionomer, 5.0 to 10.0 weight percent of a three-arm telechelic ionomer, 3.0 to 6.0 weight percent of polyvinylpyrrolidone, 5.0 to 10.0 weight percent of carrier resin, 0.03 to 0.08 weight percent of a micro-crosslinking initiator, 0.3 to 0.5 weight percent of dispersant and 0.3 to 0.5 weight percent of a lubricant, wherein the polyvinylpyrrolidone is medium and low molecular weight N-polyvinylpyrrolidone with the K value of 25 to 60. Compared with traditional plastic master batch, the plastic master batch prepared by the invention not only has good toughening and antistatic dual-functional modification effects, but also has the properties of easiness for dispersion and easiness for processing; the toughened antistatic dual-functional plastic master batch can be simply mixed with modified plastic according to a ratio and then a mixture is directly used for injection molding processing of the plasticproduct; and a good modification effect is obtained.

The invention relates to a flexible waterproof cushion. The flexible waterproof cushion is prepared from the following raw materials by weight percent: 10-30wt% of Portland cement, 1-5wt% of concretehardening agent, 1-20wt% of strong magnetic rubber powder, 1-10wt% of fluoro resin, 1-10wt% of resin curing agent, 20-60wt% of thin sand, 1-15wt% of additive, and a proper amount of water. The flexible waterproof cushion has high flexibility, good waterproof performance, and high durability, can be used as a cushion between a steel keel structure body and a reinforced concrete strip foundation, and is used in the field of thin-walled light steel structure assembled buildings.

The invention discloses a contact structure, and belongs to the technical field of electrical equipment, the contact structure comprises a moving contact and a shell used for accommodating the moving contact, the moving contact is provided with a contact end abutted against a static contact and a non-contact end far away from the static contact, the non-contact end is provided with a cavity used for accommodating accessories, and a first spring is clamped in the cavity. The lower portion of the non-contact end of the moving contact extends to be provided with a limiting portion, moving contact supports are arranged on the two sides of the moving contact, a contact shaft and a second spring are assembled in the moving contact supports, the axial surface of the contact shaft is inclined and tangent to the limiting portion, and a round first spring is assembled in the moving contact. The first spring is used for applying a counter-acting force after the first spring deforms, the rebound strength of the moving contact is improved, the contact shaft and the second spring are assembled in the moving contact support, the end face of the contact shaft is of an inclined face structure, and the inclined face part is tangent to the limiting part to achieve abutting connection, so that the retaining force of the moving contact is more concentrated, and the whole moving contact is more stable.

The invention discloses a double-end butt joint machine tool, and relates to the technical field of machine tool equipment, the double-end butt joint machine tool comprises a main body, a damping device is arranged above the main body, a clamping mechanism is arranged above the damping device, a pulling shaft is arranged above the clamping mechanism, one side of the pulling shaft is provided with a second machine head, and the other side of the pulling shaft is provided with a second machine head; a rotating gear is arranged on one side of the second machine head, and a motor is arranged at the lower end of the rotating gear. Under the combined action of the spring seats, the bearings, the damping springs, the bolts and the dampers, the situation that the machining quality of parts is affected due to vibration of a machine tool during part machining can be avoided, the vibration amplitude of the machine tool can be reduced, and therefore the parts are more stable during machining; under the combined action of the concave block, the upper notch, the lower notch, the butt joint ring, the inner sleeve, the locking piece, the reset spring, the inserting piece and the pipe column, the movement direction of a part cannot be changed when the part is in butt joint with the first machine head and the second machine head, directional butt joint can be achieved, and the butt joint quality of the part is improved.

The invention discloses an alkali-free concrete surface protective agent and a preparation method thereof. The alkali-free concrete surface protective agent comprises the following raw materials in percentage by mass: 20-30% of modified fluosilicic acid, 2-8% of hydrofluoric acid, 2-4% of a chelating agent, 0.5-1.5% of a composite surfactant, 1-5% of a pH regulator and the balance of water. The preparation method comprises the following steps: preparing modified fluosilicic acid, adding water, stirring, sequentially adding hydrofluoric acid, a chelating agent and a composite surfactant, finally adding a pH regulator, and regulating the pH value to 2-3 to obtain a colorless transparent liquid, ie., the concrete surface protective agent. According to the invention, wit the alkali-free concrete surface protective agent, the compactness of the concrete surface can be effectively improved, the carbonization depth of concrete is significantly reduced, the sulfate corrosion resistance of concrete is improved, and the resilience strength is improved; and the protective agent is convenient to use, high in operability and easy to popularize.

The invention discloses a high-chlorine silicon slurry modified premixed concrete surface hardener which can permeate into concrete to generate gelling substances, fill and adhere internal capillary micropores and gaps and inhibit concrete fission and erosion, thereby enhancing the surface compactness, resilience strength, hardness and wear resistance of the concrete. In addition, the invention further discloses a preparation method of the high-chlorine silicon slurry modified premixed concrete surface hardener, and the preparation method is simple, feasible, energy-saving, efficient and suitable for large-scale production.