34results about How to "To achieve the sealing effect" patented technology

The invention provides an intelligent agricultural irrigation system, which includes an irrigation area, an irrigator, a console, a water tank, a water injection machine, and a water level test sensor. The water level test sensor is arranged inside the water tank, and a main delivery pipe is embedded on one side of the water tank, and The other side of the water tank is embedded with an auxiliary conveying pipe, one end of the main conveying pipe is provided with a water injection machine, and one side of the auxiliary conveying pipe is provided with a water pump, and the water pump, water injector and water level test sensor are all connected to the console signal through hidden wires , the other end of the auxiliary conveying pipe is connected with an irrigator, and the irrigator is arranged in the middle of the irrigation area. Through the internal design of the console, the present invention allows users to remotely control the irrigation system by using electronic devices such as mobile phones through Bluetooth wireless connection, so as to achieve the effect of easy operation.

The invention relates to a hole sealing agent for preparing an Fe-based amorphous coating by HVOF. The hole sealing agent is prepared from tetrafluoroethylene, absolute ethyl alcohol, nano-scale Al2O3, mica filler, a dispersing agent and a film forming aid. The preparation method comprises the following steps: (1) mixing 50 parts of polytetrafluoroethylene and the absolute ethyl alcohol according to a volume ratio of 1 to 2, adding 25 parts of the nanoscale Al2O3, and ultrasonically and uniformly dispersing; (2) in an ultrasonically-dispersed mixture, adding 10 parts of the mica filler, 5 parts of the dispersing agent and 5 parts of the film forming aid, adding an appropriate amount of an absolute ethyl alcohol solvent to adjust the viscosity; and (3) placing all materials in the previous step into a high-speed dispersing machine, uniformly dispersing, filtering, sealing, standing, and preparing the needed hole sealing agent. By adopting a hole sealing method, the porosity and crystallization problem can be effectively solved.

The invention relates to a water phase hole sealing agent and usage thereof. With the total weight as the benchmark, the water phase hole sealing agent comprises the following components by weight percent: 10-20% of alcohols, 0.02-0.05% of alcohol amine, 1.5-5% of ethers, 0.03-0.3% of 1-phenyl-5-tetrazole-thione, 0.01-0.1% of 2- mercaptobenzothiazole, 0.1-0.4% of polyvinylpyrrolidone, 0.1-2% of surfactant, and the balance of water. The alcohol amine, 1-phenyl-5-tetrazole-thione and 2- mercaptobenzothiazole are mixed for preparing the water phase hole sealing agent, due to the assist of water solution of alcohols, ethers, polyvinylpyrrolidone, surfactant, and pH modifier, the alcohol amine, 1-phenyl-5-tetrazole-thione and 2-mercaptobenzothiazole cooperate so as to realize unexpected hole sealing effect; according to the experimental data, the plated piece with holes sealed is not corroded after at least 96 hours of salt spray test, so that the water phase hole sealing agent is obviously improved in hole sealing effect compared with the existing hole sealing agent, and the corrosion resistance of the plated piece is remarkably enhanced.

The invention discloses a sealing connecting piece for inward-rotation type grating plates. The sealing connecting piece comprises one set of grating plates. The grating plates include a pair of upper supporting arm and lower supporting arm, wherein the upper supporting arm and the lower supporting arm are horizontally arranged in parallel. The two ends of the upper supporting arm and the two ends of the lower supporting arm are connected through fixing plates respectively. A filtering membrane plate is arranged between the upper supporting arm and the lower supporting arm. An upper sealing coupling piece is arranged at the upper end of the upper supporting arm, and a lower sealing coupling piece is arranged at the lower end of the lower supporting arm. The upper sealing coupling piece and the lower sealing coupling piece between the adjacent grating plates are connected in a staggered manner. A sealing strip is arranged between the upper sealing coupling piece and the lower sealing coupling piece. According to the sealing connecting piece for the inward-rotation type grating plates, the sealing effect during equipment operation can be effectively achieved, the grating plates cannot be blocked, the filtering efficiency is high, maintenance is reduced, and operation cost is reduced.

The invention provides modified poly (propylene carbonate), which comprises a cross-linked poly (propylene carbonate) with polyphenyl polymethylene polyisocyanates as a cross-linking agent, as well as a polymer of hexanedioic acid and 1,2-propylene glycol ester, wherein the mass ratio of poly (propylene carbonate) to the polyphenyl polymethylene polyisocyanates is 100:(0.1-2), and the mass ratio of the cross-linked poly (propylene carbonate) to the polymer of hexanedioic acid and 1,2-propylene glycol ester is 100:(5-20). A preparation method of the modified poly (propylene carbonate) comprises the following steps: blending and extruding the poly (propylene carbonate) and the polyphenyl polymethylene polyisocyanates to obtain the cross-linked poly (propylene carbonate); and blending and extruding the cross-linked poly (propylene carbonate) and the polymer of hexanedioic acid and 1,2-propylene glycol ester to obtain the modified poly (propylene carbonate). The modified poly (propylene carbonate) provided by the invention is good in thermal stability, high in tensile elongation at break, good in transparency and capable of being biodegraded completely.

The invention provides a polypropylene carbonic ester compound and a preparation method thereof. The polypropylene carbonic ester compound comprises polypropylene carbonic ester, poly1,2-propanediol succinate and maleic anhydride, and the weight ratio of the polypropylene carbonic ester, the poly1,2-propanediol succinate and the maleic anhydride is 100:4-100:0.1-1. The polypropylene carbonic ester compound has higher tenacity and has the break elongation rate of 1,108%, and the material has higher transparency. Since the polypropylene carbonic ester and the poly 1,2-propanediol succinate havecomplete biodegradation, the polypropylene carbonic ester compound has higher tenacity and keeps the transparency and the complete biodegradation. Furthermore, the polypropylene carbonic ester material has wider application space.

The invention provides an inner engaging gear pump used for a stopper of a petroleum machinery oil tube with an over-small hole in an oilfield. The other end of a shell body is matched with a right support and then fixedly connected with a right end cap, a full-moon-shaped supporting block is arranged in the shell body, and an inner gear ring is arranged in the full-moon-shaped supporting block; a left floating side plate is arranged on the left side of the inner gear ring, a right floating side plate is arranged on the right side of the inner gear ring, and a right support is arranged between the right floating side plate and the right end cap; a lip-shaped sealing ring is arranged between the right support and the right end cap, a gear shaft is eccentrically arranged in the inner gear ring and engaged with the inner gear ring, and a first sliding bearing is arranged among the shell body, the right support and the gear shaft; a second sliding bearing is arranged among the left floating side plate, the right floating side plate and the gear shaft, a crescent-shaped plate is arranged between the gear shaft and the inner gear ring, and a crescent-shaped plate fixing pin is arranged between the left floating side plate and the right floating side plate; and a crescent-shaped plate stopping pin is arranged between the left support and the right support, and a full-moon-shaped supporting block fixing pin is fixed on the left support and has a fixing impact on the full-moon-shaped supporting block.

The invention belongs to the technical field of sealing for alcohol extraction kettles, and particularly relates to a combined sealing device for a quick-open type alcohol extraction kettle. The device comprises a sealing end seat and a cover plate, wherein seat grooves are concavely formed in adjacent surfaces of the cover plate and the sealing end seat respectively; a first heat insulation sealing seat, a sealing ring and a second heat insulation sealing seat are successively arranged on stacking surfaces of the insides of the seat grooves in an adhered manner; and annular grooves are concavely formed in the inner side surface and the outer side surface of the sealing ring respectively, so that a wavy-line-shaped or comb-teeth-shaped structure is formed on the axial cross section of the sealing ring. The device further comprises a hoop, a bayonet is concavely formed in an inner ring surface of the hoop coaxially, sink slots or notches are annularly and concavely formed in the outer walls of the cover plate and the sealing end seat correspondingly, and the hoop applies a force in the axial direction to press the cover plate and the sealing end seat. The device has the advantages of reasonable structure, convenience in mounting and capability of being used repeatedly. Requirements of sealing of equipment under the working conditions of high temperature and high pressure can be met effectively, the working reliability is high, and the service life can be guaranteed effectively.

The invention discloses an inward rotating type grating chain wheel side edge sealing part. The sealing part comprises a pair of chains and a set of grating plates arranged in the chains; a sealing plate is arranged on the inner side of a fixed plate, and a connecting plate is arranged on the outer side of the fixed plate; the grating plates are fixed to the inner sides of the chains through the connecting plate; and the chains are covered with a fixed frame, a ring of adjusting fixed frame capable of displacing is arranged on the outer side of the fixed frame, and a ring of polymer sealing part is arranged on the inner side of the fixed frame and tightly attached to the connecting plate. The inward rotating type grating chain wheel side edge sealing part is simple in structure, long in service life, capable of effectively playing a sealing effect during equipment running, high in filtering efficiency and easy to maintain and reduces the operation cost.

The invention relates to an intelligent sewage tank. A frame is arranged inside a tank body, a rotating shaft is arranged between the front end of a top frame and the rear end of the top frame and is provided with a sliding plate, the sliding plate is provided with a fixed frame, a motor is arranged inside the fixed frame, a gear is connected at the top part of a sticking wheel, a fixed plate is arranged at the front end of the bottom of the sliding plate, a stepping motor is arranged at the upper-right part of a rack, the rack is provided with thermally conductive silicone rubber, the sliding plate is provided with a heating plate, a threaded rod is arranged at the front end of an upright column, a support arm is arranged on the threaded rod, a stabilization frame is arranged at the upper part of the left end surface of the support arm, a motor is arranged at the front end of the inside of the stabilization frame, a roller is arranged at the rear end of the stabilization frame, the frame is provided with a cutting mechanism, and two rotating sticking wheels are arranged in a support frame. The intelligent sewage tank has a simple structure, can be operated flexibly and conveniently, can ensure the opening success rate, makes the loading process be smooth, can open the garbage bag through cooperation of the sticking wheel and the rotating wheel, can achieve a sealing effect by the heating plate and the thermally conductive silicone rubber, and can ensure the garbage not to be dispersed in a transporting process.