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.

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.

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.