32results about How to "Meet waste" patented technology

The invention provides a cable hole blocking apparatus. The cable hole blocking apparatus comprises fireproof partition plates and a fireproof supporting plate; the section of the fireproof supportingplate is semicircular annular; the fireproof supporting plate is used for supporting a cable, so that the cable does not apply force on the subsequently filled fireproof blocking material, falling off of the fireproof blocking material caused by stress can be avoided, and high sealing performance of the subsequently filled fireproof blocking material is ensured; the number of the fireproof partition plates is two, and the section of each fireproof partition plate is sector-ring-shaped; the central angle of the fireproof partition plates is greater than 90 degrees; the two fireproof partitionplates are rotationally connected with the two ends of the fireproof supporting plate, so that superposition between the center of circle of the section of the fireproof supporting plate and the center of circle of the section of the two fireproof partition plates can be prevented; the fireproof supporting plate and the two fireproof partition plates are matched to form a cavity for allowing the cable to pass through; the fireproof partition plates are rotated to form an opening between the two fireproof partition plates, so that the cable can be put in and taken out conveniently; the cable can be fixed by closing the two fireproof partition plates; and therefore, the blocking apparatus can be detached and assembled very conveniently, without damaging the cable.

The invention discloses a magnetic suction writing wall and a preparation process thereof. The magnetic writing wall of the present invention is prepared from water-based magnetic-absorbing tough glaze paint and water-based writing tough glaze paint. The magnetic writing wall of the present invention is easy to paint and construct, has firm adhesion to various substrates, strong ferromagnetism of the coating, fast surface-drying speed, excellent writing and erasability, high scratch resistance hardness, and no damage when wiping with solvents. It can fully meet various requirements for the performance of whiteboards in actual use, and can completely replace metal whiteboards and glass whiteboards, reducing the waste of financial and material resources, reducing unnecessary space occupation, and exerting good economic and social benefits.

A method for manufacturing a cavity filter cover plate, including material selection, positioning, and processing tuning threaded holes, stretching the plate through a hydraulic stretching machine, stretching the copper side of the cover plate facing the aluminum side during stretching, According to the thickness of the plate and the material requirements, the stretching mold is equipped with multiple stations. After the stretching starts, the plate at the position of the tuning threaded hole on the cover plate is quickly stretched to the initial station, and then from fast to slow. Multiple times of stretching, after the hydraulic stretching machine stretches the sheet to the final position, the stretching machine slowly returns to its original position, and the processing head of the stretching machine quickly reverses several times during the process of returning to its position. The stretching machine returns to its original position after being reversed for many times. At this time, the hydraulic stretching machine processes a boss integrated with the cover plate at the position of the tuning threaded hole. The middle part of the boss is hollow. The present invention uses a hydraulic machine to process For the stretching problem, compared with the traditional method of punching holes with a punching machine, the present invention has a higher yield and a better manufacturing effect.

The present invention discloses process of preparing semi-solid aluminum alloy slurry. The process includes the following steps: 1. preparing aluminum alloy powder through high pressure inert gas atomizing or jet molding; 2. heating partial aluminum alloy into melt and maintaining in semi-solidifying temperature region; and 3. mixing the aluminum alloy powder and the aluminum alloy melt through stirring to obtain semi-solid aluminum alloy slurry. The process of the present invention can produce semi-solid aluminum alloy slurry with fine structure in short period, simple apparatus and low cost.

The invention discloses a production method for a high tensile steel plate used for a high thickness boiler drum. The production method comprises the following steps: (1) smelting: smelting molten steel in an electric furnace, the refining the molten steel in an LF finer, adding 300 to 500 meters of Al thread, and carrying out vacuum treatment in a bale VD furnace when the temperature of the baleis more than or equal to 1600 DEG C; (2) casting: keeping the temperature between 1,545 and 1,555 DEG C after damaging the vacuum; (3) heating: realizing the sending, clearing and filling of a steel ingot at a moderate temperature, cooling down the furnace for over 30 minutes before steel filling, and stewing the steel for one hour; (4) rolling: adopting II type rolling control technology, and setting a first stage as an austenite recrystallization stage and a second stage as an austenite non-recrystallization stage; (5) water cooling: cooling down the rolled steel plate on line, and keeping the red temperature between 700 and 750 DEG C; (6) heat treatment: carrying out the normalizing plus tempering treatment of the steel plate; and (7) shot blasting: carrying out shot blasting before storing the steel plate in a warehouse so as to completely remove the iron sheet produced during heating. The method shortens the steel rolling and heating time, reduces the consumption of production energy, and meets the requirements of a plurality of heat cycles during the boiler manufacturing process. The steel plate has good welding performance.

The invention relates to a filler material for braided packing and especially to a layered shearing type sealing filler material used for a rotary pump and a preparation method thereof. The invention mainly aims to overcome technical problems in the prior art, e.g., a conventional sealing mode consumes considerable power, a shaft is severely abraded, a pump body is frequently examined and repaired, a set of cooling device needs to be designed on a stuffing box to realize heat dissipation, which makes broadly defined zero leakage difficult to achieve, a rotary pump has to be shut down for repair, and braided packing of different specification has to be stocked, which increases operational cost and wastes resources. According to the invention, vegetable fibers are put in a fluff carding machine for fluff carding so as to allow the vegetable fibers to become fluffy floccules; grease and an inorganic filler material are subjected to anhydration and then to mixing and then are put in a mixer for fully stirring; the vegetable fibers are put in the mixer and are mixed with the grease and the inorganic filler material, and after uniform mixing, a finished product of the layered shearing type sealing filler material used for a rotary pump is obtained.

The present invention provides an aerial spraying operation method of cotton defoliation agents under the wide and narrow row cultivation mode. The effective spray width just covers or slightly exceeds the average width of cotton plants formed by 4 rows of cotton plants and 1 transfer row on two adjacent mulch films, which satisfies the need for growers not to spray too much liquid on the transfer row, that is, " (2) The present invention coordinates the effective spray width of plant protection drones at different operating heights with the "wide and narrow row" cotton cultivation mode popularized and adopted in many places in China Correspondingly, the integration of agricultural machinery and agronomy in the spraying process of plant protection drones is realized, which meets the overall requirements of the country for the integration of agricultural machinery and agronomy; (3) The present invention provides a precise aerial spraying of other pest control agents in the cotton field management process. An operational norm that can be used for reference.

A high-efficiency indoor environment-friendly air filter, including an air intake frame, an air extraction device, a first frame device, a water tank device, a sprinkler device, a second frame device, a rotating device, a connecting device and a third frame device, The air intake frame is provided with a first through hole, a second through hole, a first spring, a first filter net, a first sponge block and a second filter net, and the air extraction device includes an air extraction pipe, a fan, a first bracket and a first The fixing bar, the first frame device includes the first frame, the sealing ring, the third filter net, the fourth filter net, the first inclined plate, the first pipeline and the first valve, the water tank device includes the water tank, the fifth filter net, The water inlet bucket, the second fixed rod, the second pipe, the second valve, the second bracket and the third fixed rod, the sprinkler device includes the third bracket, the first fixed block, the rotating plate, the first cross bar, the second spring, First connecting ring. The invention can effectively purify the indoor air, has high purification efficiency and ideal purification effect.

The invention discloses a modularized animal husbandry breeding shed. The shed comprises a base, a room body is arranged at the upper side of the base, the room body is composed of several wall bodies, several small room bodies are arranged inside the room body, each small room body comprises a supporting base and a breeding box, a cavity is formed in the lower side of the supporting base, electric telescopic rods are arranged inside the cavity, lifting plates are arranged at the lower sides of the electric telescopic rods, second universal wheels are arranged at the lower sides of the lifting plates, a rotary motor is arranged in the middle of the upper side of the supporting base, the output end of the rotary motor is connected with the lower end of the breeding box, supports are arranged at the lower side of the breeding box in a left-to-right symmetrical mode, the supports are provided with rotary wheels, annular bases are arranged at the upper side of the supporting base, annular grooves are formed in the upper sides of the annular bases, the lower portions of the rotary wheels are arranged in the annular grooves, a dung discharge base plate is arranged inside the breeding box, and a sealing plate is arranged at the right side of the breeding box through a rotary shaft. The modularized animal husbandry breeding shed is simple in structure, convenient to use, and easy to move, the cost is lowered, and the breeding effect is good.

The invention relates to a filler for braided packing, and especially relates to a layered shear-mode sealing filler for rotary pumps and a preparation method thereof. The invention mainly solves the technical problems in the prior art that the packing sealing mode has great power consumption, severe shaft abrasion, and frequent pump body maintenance; a cooling device is required to be designed on a packing box, and heat is dissipated by the cooling device, which makes it difficult to realize generalized zero leakage; shutdown repair is required; inventory stock is performed for braided packing with various specifications; and thus the operation cost is increased, and resources are wasted. The preparation method of the invention comprises the following steps: adding asbestos-free mineral fibers, graphite, lubricating grease into a high speed mixer for mixing, fully stirring; performing kneading treatment of the mixture of asbestos-free mineral fibers, graphite, and lubricating grease; adding the kneaded mixture into a cavity of a plunger-type extrusion device for extrusion so as to obtain the finished product of a layered shear-mode sealing filler for rotary pumps.

The invention discloses a tail gas comprehensive utilization method for producing nitromethane by a nitrite replacement method, and belongs to the technical field of tail gas recovery and reuse. The invention comprises the following steps: 1) passing the tail gas produced by the nitrite replacement method into the alcohol and stirring to obtain an alcohol solution of methyl nitrite; 2) taking ethyl acetoacetate, alcohol and a catalyst, and mixing them to prepare 3) the alcohol solution of methyl nitrite obtained in step 1) is passed into the reaction solution obtained in step 2), stirred, and reacted for 4 to 8 hours at 5 to 15°C to obtain 2-Nitrite Ethyl nitroacetoacetate. In the present invention, the absorption efficiency of methyl nitrite is high, and the absorption liquid is directly applied to the production of ethyl 2-nitrosoacetoacetate. As an important intermediate in the production of aminothioxamic acid, it is widely used in the pharmaceutical industry, which not only realizes the collection of tail gas , and the utilization efficiency of the absorption liquid is extremely high, avoiding resource waste, low cost, and realizing high-efficiency co-production.