77results about How to "Reduce non-productive time" patented technology

The invention belongs to the technical field of oil drilling, and relates to a double-throttle control slurry pump distributing manifold for applying wellhead back pressure and a method. The double-throttle control slurry pump distributing manifold for applying the wellhead back pressure comprises a main pipe, a manifold four-way joint, a first distributing pipeline, a second distributing pipeline and a third distributing pipeline; the manifold four-way joint is respectively connected with the main pipe, the first distributing pipeline, the second distributing pipeline and the third distributing pipeline; a pressure gauge is installed on the main pipe; and the first distributing pipeline is provided with a first stop valve and a first throttling valve, the second distributing pipeline is provided with a second stop valve and a second throttling valve, and the third distributing pipe is provided with a third stop valve. The pump is unnecessary to stop and start in the connecting process, the pulling out process and the drilling down process, so that the pressure fluctuation on the bottom of a well can be reduced, and the control capacity for the bottom pressure can be improved; a back pressure pump is not needed, so that additional work caused by the back pressure pump is avoided, the nonproduction time can be reduced, and the drilling cost can be reduced; the pollution caused by the leakage of the back pressure pump can be avoided; and the energy and the floor area can be saved.

The present invention discloses a method for longitudinally optimizing cutting timber. The method comprises the following steps: inputting a cutting data list into a computer device beforehand, selecting a width reference border of sawtimber to be cut for confirming the maximum width of sawtimber to be cut, transmitting the information to the computer device for selecting an optimal cutting plan through analyzation and calculation, axially moving the circular saw blade of saw cutting machine to a cut line position corresponding with the sawtimber to be cut according to instruction of computer device for longitudinally cutting the sawtimber to be cut to finished sawtimber and waste edge material. The timber cutting optimizing circular sawing machine for realizing the method of the invention comprises a circular sawing machine base, a feeding chain plate, a sawblade main shaft, a front compression roller and a back compression roller, wherein the front compression roller and the back compression roller are positioned at the front side and the back side. The marking-off equipment stand which is fixedly installed at the front end of engine base is installed with follower marking-off equipment. A moving circular saw blade is installed on the main shaft of sawblade. The main shaft assembly and the upper frame are respectively supported on the front lifting upright post and the back lifting upright post with a liftable mode. The method of the invention can greatly increase the material yielding rate and production efficiency and has the advantages of high automatization degree and wide application sphere.

The invention relates to an automatic turret-type nozzle replacing device of a laser cutting machine, in particular to an automatic turret-type nozzle replacing device which is simple in structure, convenient and rapid for replacing a nozzle and capable of increasing the working efficiency. The laser cutting machine comprises a worktable, a cutting head and a nozzle, wherein the nozzle is detachably connected onto the cutting head; and any corner of the worktable is provided with the automatic nozzle replacing device, and the automatic nozzle replacing device comprises a turntable, a nozzle receiving component, a box body, a transmission shaft, an elevation air cylinder and a gear transmission mechanism. The automatic turret-type nozzle replacing device is unnecessary to operate by an operator, especially under an automatic running mode, so that the non-production time is shortened, the working efficiency is increased, and the cost is saved.

A process for preparing polyvinyl chloride in 70.5 cu.m polymer reactor includes such steps as isolating oxygen, flushing inner surface of reactor by water, spraying detackifier by steam, flushing with water, sequentially adding buffering agent, vinyl chloride, hot water, disperser, composite trigger and chain transferring agent, polymerizing for 10 min, adding low-temp water to make reaction temp to be 49-64 deg.C, reacting until the conversion rate reaches 80%, adding stopping agent, terminating reaction, discharging slurry, recovering excessive vniyl chloride, steam stripping, dewatering and drying.

The invention discloses a seedling raising method of a tomato seed. The seedling raising method is characterized by comprising the following steps: (1) selecting the seed; (2) accelerating germination; (3) preparing a seedbed; (4) performing seedling raising management; (5) transplanting; (6) applying fertilizer; (7) performing final period management. The development of adventitious roots is promoted by adding salicylic acid, so the root system is more developed, and the success rate after transplantation of a seedling is greatly improved. The method has a simple process and is convenient to operate; the tomato seed germination speed, the germination rate and the uniformity can be effectively improved by combining germination and the seedling raising mode, the seedling quality is improved, robust seedling is cultivated, the tomato non-production time is shortened, and an efficient method is provided for large-scale seedling production required by the tomato planting industry.

The invention relates to a sewing machine for stitching back stitches, provided with a needle bar for receiving a needle guiding an upper thread, and comprising a rotary shuttle (5) in which a bobbincase (4) comprising a bobbin guiding a lower thread can be accommodated, said sewing machine also comprises a bobbin case changing device (8) enabling a bobbin case (4) to be removed from a housing (9) and to be introduced into the rotary shuttle (5). The aim of the invention is to improve the functional reliability of said type of sewing machine with a bobbin case changing device, such that the bobbin case changing device (8) is secured to an upper part of the machine frame (2) of the sewing machine.

An improved top pot assembly utilizes an attachment body for attaching the rubber to a bearing assembly for rotation with the inner barrel. The attachment body simplifies the replacement of the rubber on the drilling assembly. The attachment body provides a guide that slopes downward into the central aperture and the bore to guide the mandrel and drilling string towards the bore. The attachment body also provides a stripper receiver for attachment of the rubber to the attachment body. The attachment body attaches to the housing which attaches to the bearing assembly for rotation of the rubber and the inner barrel.

The invention belongs to the technical field of coal-mine underground single hydraulic-prop transportation, particularly relates to a rapid transporting device for an underground single hydraulic prop and a transporting method finished by the rapid transporting device and solves the problems of great worker labor intensity and difficult safety guarantee of traditional single hydraulic-prop support. The device comprises a plurality of main-wheel groups, a driving-wheel group, a chain, a plate-bending assembly and a track. According to the transporting method, a double-end closed-type railway is adopted, and the plurality of main-wheel groups can be recycled in the processes of hanging a transporting railway and transporting the single hydraulic prop, so that the rapid transportation of the single hydraulic prop is realized. According to the transporting device and the transporting method, the requirement on the rapid transportation of the single hydraulic prop at a mining area can be met; in addition, the time and the labor are saved, the labor intensity of workers is lowered, the auxiliary time is shortened, the safety is improved, and the production efficiency of a fully-mechanized coal-mining surface is improved.

The invention provides a method for producing neutral phytase through immobilized bacillus fermentation. The method comprises the following steps: (1) preparing a seed solution; (2) carrying out pretreatment of a carrier: modifying a ceramsite carrier with an alkali liquor; (3) preparing immobilized cells: filling the carrier into a fixed bed reactor, and immobilizing thallus cells on the carrierthrough an adsorption effect; (4) carrying out pre-culturing: culturing the immobilized cells for 30-40 hours by using a fermentation culture medium; and (5) carrying out continuous fermentation culture: enabling the fermentation culture medium to flow into a fixed bed reactor at a certain dilution rate for continuous fermentation. The bacillus is immobilized by adopting the alkali-modified carrier, and the method has the advantages of being low in cost, stable in property, non-toxic and good in adsorption effect. According to the method, the immobilized cell technology is combined with the continuous fermentation process, so that the purpose of continuously producing neutral phytase at high intensity is achieved, the fermentation efficiency and the phytase yield are greatly improved, andindustrial production is facilitated.

The invention discloses reel-to-reel equipment for preparing a nano-silver wire electrode film. The reel-to-reel equipment comprises a vacuum chamber, a first unwinding roller, a first winding roller, a second unwinding roller, a second winding roller, a nano-silver wire groove mold, a Meyer rod group, a high-molecular polymer groove mold, an impressing roller, a separating roller and a coating roller, and the unwinding rollers and the winding rollers are both arranged in a roller replacing device. According to the device, replacement of the rollers can be achieved under the condition that the vacuum chamber is not exposed to the atmosphere. A PI flexible film coiled material is loaded on the first unwinding roller, and the coating roller, the MeiYer rod group, the impressing roller, a nano-silver wire recycling pool and the first winding roller are sequentially arranged on the downstream portion of the first unwinding roller. A PET flexible film coiled material is loaded on the second unwinding roller, and the high-molecular polymer groove mold, the impressing roller, the separating roller and the second winding roller are sequentially located on the downstream of the second unwinding roller. The PI flexible film and the PET flexible film are subjected to impressing compounding at the impressing roller and an impressing supporting roller, are separated at the separating roller and are finally wound by the first winding roller and the second winding roller respectively.

The invention relates to a method for shortening the replacement time of single-station RH vacuum chambers and an RH vacuum chamber replacement device. According to the method, two original vacuum chamber transporting vehicles of the single-processing-station RH are combined into a long double-vacuum-chamber transporting vehicle, the action that one of the two vacuum chambers operates from a processing station to a standby station and the action that the other of the two vacuum chambers operates from the standby station to the processing station can be completed at the same time, the non-production time of an RH vacuum refining furnace is shortened, and the RH vacuum refining furnace has the advantages of being light in equipment weight, small in total length and large in operation area.

The invention belongs to the technical field of bioengineering, and relates to an amino acid efficient environmentally-friendly production extraction process. The process comprises the following stepsof: collecting an L-alanine fermentation broth, performing centrifuging, and collecting a supernatant; carrying out microfiltration on the supernatant through a ceramic membrane, and collecting filtrate; adding activated carbon into the filtrate for decolorization, performing filtering by a plate frame, and collecting a decolorized solution; exchanging L-alanine onto resin through strongly acidiccation exchange resin, then completely eluting the L-alanine on the resin with ammonia water, and carrying out concentration crystallization, centrifugation and drying to obtain a finished product. According to the process, fermentation production intensity can be improved, so that the production cost of fermented alanine is reduced.

The invention discloses an uninterrupted circulating valve. The uninterrupted circulating valve comprises a casing, a main channel and a bypass channel, wherein the casing is cylindrical, threads are formed in the upper end and the lower end of the casing, a through hole A and hole channels A are axially formed in the casing, and a hole channel B is radially formed in the casing; a spring seat, a spring, a valve element and a valve seat are mounted in the through hole A from top to bottom; a through hole B is processed in the axial center of the spring seat, and axial through holes C are formed in the outside part of the through hole B; the middle of the valve element adopts a conical structure and forms a taper angle seal with a conical chamfer at the upper part of the valve seat. The uninterrupted circulating valve has the advantages that with the adoption of a manure one-way valve seal form, the fluid sealing reliability of the uninterrupted circulating valve is improved. Through continuous circulation in the drill pipe connection period, pressure fluctuation of a wellbore due to drill pipe connection operation is effectively avoided, the wellbore quality and cleanness are improved, the probability of leakage, well kick, pipe sticking and other complicated problems is reduced, the non-productive time is reduced, and a stratum which cannot be drilled previously is drilled.