231results about How to "Cause blockage" patented technology

The invention relates to a pressure-reducing and injection-increasing agent for a water injection well of a low-permeability oilfield, and a preparation method and application thereof. The pressure-reducing and injection-increasing agent is prepared from the following components by weight: 2.0 to 6.5% of a multifunctional surface treating agent, 0.75 to 3.15% of hydrophobic nanometer silica or nanometer poly-silicon and 2 to 8% of a pH conditioning agent, with the balance being deionized water, wherein the multifunctional surface treating agent comprises, by weight, 30 to 80% of a nonionic surfactant, 2 to 25% of an anionic surfactant and 10 to 50% of an ampholytic surfactant. The pressure-reducing and injection-increasing agent is free of pollution to strata and can overcome the problems of high water injection pressure, unqualified injection allocation of a water injection rate and a short action period of injection increase in the later stage of development. The preparation method is simple in process, free of emission of pollutants and easy for industrial large-scale production.

The invention relates to a three-tube multi-split air-conditioning system oil return or defrosting control method and a system thereof. The method includes the following steps that step1, a port of refrigerating/heating switching device and an output pipe of an air-conditioning external unit system through a bypass pipe, the bypass pipe is provided with a bypass electromagnetic valve, and whether an air-conditioning system enters the oil return or defrosting state or not is detected in real time; step 2, when the air-conditioning system enters the oil return or defrosting state, an air-conditioning heat recycling device is switched into the refrigerating mode; step 3, an electromagnetic expansion valve of a throttling part of the air-conditioning heat recycling device is turned off, and the bypass electromagnetic valve is turned on; step 4, after the air-conditioning system receives the ending signal of oil return or defrosting, the bypass electromagnetic valve is turned off, and the electromagnetic expansion valve of the throttling part of the air-conditioning recycling device is turned on. According to the three-tube multi-split air-conditioning system oil return or defrosting control method and the system thereof, coolants do not pass through a hydraulic module system, and the situations that the hydraulic module system is frozen due to the coolants, and thus pipes are blocked are avoided on the premise of meeting the oil return and defrosting requirements.

The invention discloses a stirrer for feed production. The stirrer comprises a shell, a stirring device and a motor, wherein the motor is mounted on the shell; a material inlet is formed in the top of the shell; a material outlet is formed in the bottom of the shell; the stirring device comprises a stirring shaft, a stirring stick and an air pump; the stirring stick is perpendicularly fixed on the stirring shaft; the air pump is fixed on the stirring shaft; the stirring shaft and the stirring stick adopt hollow structures; the hollow structures of the air pump and the stirring shaft are communicated; the hollow structure of the stirring stick is communicated with the hollow structure of the stirring shaft; an air outlet is formed in the stirring stick and is communicated with the hollow structure of the stirring stick; the stirring shaft is connected with an output shaft of the motor and is positioned in the shell. During stirring, stirred substances cannot be stuck to the stirring stick, so that extra work load of the motor cannot be increased, loss of electric energy is reduced, the stirring stick is not needed to be cleaned, and the labor is saved.

The invention relates to the technical field of ceramic ink jetting, in particular to ceramic ink-jet ink with low viscosity and a preparation method thereof. The ceramic ink-jet ink comprises the following component according to weight percentage: 35-60 percent of ink diluent, 30-55 percent of ceramic colorant, 0.5-4 percent of ink auxiliary agent and 0.5-10 percent of resin. The ceramic ink-jet ink has low viscosity and low surface tension, is applicable to an ink printing spray head with high precision, and can be applied to a Sayre 1001-type spray head and an American north star 512-type spray head; the ink does not contain water, so that the ink does not corrode a spray head of an ink-jet printer in the using process and the service life of the spray head can be obviously prolonged. The preparation method of the ceramic ink-jet ink comprises the following steps of primarily grinding by using a ball mill and performing refined grinding by using a sand mill, so that the production cost is greatly saved, and the preparation method of the ceramic ink-jet ink is efficient.

The invention discloses an anastomat which comprises a plurality of anastomotic pins (31) which are made of degradable materials; a plurality of pin covers (32) which are made of degradable materials are matched with the anastomotic pins (31); the number of the anastomotic pins is the same with that of the pin covers; pin holes (34) of an annular-shaped anastomotic pin cabin (3), which face an annular surface (33) of a nail seat (2), are provided with the anastomotic pins (31); and the pin covers (32) are arranged in cover holes (22) of the plane portion (33) of the nail seat(2). The anastomat has the advantages of enabling no metal part to be reserved in a patient body due to the degradable pins and the pin covers; causing small damage to the tissues due to the fact that tips of the anastomotic pins are small and slim; causing no block of gastrointestinal tracts due to the fact that the matching structure of the pin covers and the anastomotic pins is small and exquisite; and enabling no redesign of the existing anastomat to be performed due to the fact that the structure change of the existing anastomat is small. The invention also discloses an application method of the anastomat.

The invention discloses a vehicular internal combustion engine fuel-borne catalyst and application thereof. The vehicular internal combustion engine fuel-borne catalyst comprises, by mass percent, 65-80% of tourmaline, 3-8% of aluminum oxide, 15-30% of iron oxide and 1-3% of dicerium trioxide. The vehicular internal combustion engine fuel-borne catalyst has the advantages of safety, reliability, simplicity in application, no physicochemical damage to an engine, no influence on a vehicular structure, a circuit, an oil circuit and mechanical properties, capability of achieving remarkable energy-saving and emission-reducing effects, lower vehicular maintenance cost, higher power, low use cost and long service life and can be applied to various diesel vehicles, gasoline vehicles, LPG (liquefied petroleum gas) vehicles and the like.

The invention provides a method and a device for automatically controlling plate discharge at the outlet of a drying machine. The method comprises the following steps: limiting sensors send sensing signals to a controller; the controller selects a current layer according to the order of the received sensing signal, sends a plate discharge instruction to a stopper actuating device and begins timing, and the stopper moves downwards; the time is delayed by t seconds after the sensing signal sent out by the limiting sensor of the current layer disappears and the controller sends a plate stopping instruction to the stopper actuating device; the stopper moves upwards and a plate stopping completion signal is fed back to the controller; the next layer is selected and plate discharge is repeated; when the time that the limiting sensor of the current layer continuously sends out the sensing signals reaches T, if the controller does not receives a plate stopping completion signal, the other layers are selected to repeat plate discharge; when the time that the limiting sensor of the current layer continuously sends out the sensing signals reaches T1, if the controller does not receives the plate stopping completion signal, an alarm device gives an alarm, wherein T1 is greater than T. if one layer is out of order, the other layers are automatically controlled to perform normal plate discharge; the operation efficiency of the drying machine is improved and the blockage of the drying machine is avoided; as a result, the drying machine is convenient to maintain and clear.

The invention discloses an intelligent full-automatic hot-melting button wrapping machine. The intelligent full-automatic hot-melting button wrapping machine comprises a frame and is characterized inthat a winding mechanism, a thread pulling and breaking mechanism, a thread melting and fixing mechanism and a drive device are arranged in the frame, a control system in control connection with the drive device is arranged on the frame, a spool seat for mounting a spool is arranged on the frame, a button wrapping thread tightness adjuster is arranged between the spool seat and the winding mechanism, a thread breaking detecting alarm device is arranged between the button wrapping thread tightness adjuster and the winding mechanism, and the output end of the thread breaking detecting alarm device is connected with the control system. The intelligent full-automatic hot-melting button wrapping machine the thread breaking detecting alarm device is arranged on the frame, the thread breaking detecting alarm device transmits thread breaking information to the control system when the button wrapping thread entering the winding mechanism breaks to guarantee that the machine stops working duringthread breaking, the thread breaking detecting alarm device can also emits notification to notify staff immediately after the thread breaking occurs, and manpower and material resource waste can be avoided.

The invention discloses a full-automatic drilling and tapping machine for a fuel nozzle hole of a vertical bearing block. The drilling and tapping machine comprises a workbench, a charging mechanism, a clamping mechanism, a drilling mechanism, a tapping mechanism, a discharging mechanism and a control system, wherein the clamping mechanism comprises a work passage and a clamping device positioned under the work passage; the clamping device comprises a front clamping assembly and a rear clamping assembly which are matched with each other; the front clamping assembly comprises a front supporting plate, a front oscillating bar arranged on the front supporting plate and a plurality of front claws coating the front oscillating bar; the rear clamping assembly comprises a rear supporting plate, a rear oscillating bar arranged on the rear supporting plate and a plurality of rear claws coating the rear oscillating bar. The full-automatic drilling and tapping machine has the advantage that the bearing block clamping mechanism cannot be easily blocked by scrap iron, and has the advantages of high automatic degree, high production efficiency and low labor cost.

The invention discloses a nitrogen blowing instrument. The nitrogen blowing instrument comprises a bracket, a shell on which a pipeline is placed, a blowing needle and a heating device, wherein the shell with the pipeline is fixed on the upper part of the bracket, the heating device is fixed at the lower part of the bracket, the lower surface of the shell with the pipeline is provided with the detachable blowing needle, the blowing needle is connected with the pipeline, and the pipeline and the blowing needle are made from polytetrafluoroethylene and copolymer thereof. The invention further discloses a wet digestion method using the nitrogen blowing instrument. The method comprises the following steps: 1) placing a sample and a reaction reagent in a digestion cup; 2) placing the digestion cup on the heating device of the nitrogen blowing instrument; 3) placing the blowing needle of the nitrogen blowing instrument in the digestion cup and introducing a protection gas; and 4) setting or changing the heating temperature of the heating device according to a preset digestion temperature according to the types of the sample and the reaction reagent. The nitrogen blowing instrument disclosed by the invention is simple in structure, and is capable of effectively preventing explosion when applied to wet digestion, the security of the operation is improved, the secondary pollution of metal can be effectively avoided, and the accuracy of the detection result is guaranteed.

The invention discloses a full dielectric layer twisted glass fiber band nylon optical cable resistant to thunder, mice and ants. The cable comprises at least one tight sleeve fiber, a central reinforcement member (2), filling ropes (3), an inner protective layer (7), a glass fiber band (8) and an outer protective layer (9). The tight sleeve fiber comprises a fiber (1), a loose sleeve pipe (6) and fiber paste (5), wherein the fiber (1) is disposed inside the loose sleeve pipe (6), and the fiber paste (5) fills between the fiber (1) and the loose sleeve pipe (6). All the tight sleeve fibers, the central reinforcement member (2) and the filling ropes (3) are disposed inside the inner protective layer (7). Water-resisting ointment (4) fills inside the inner protective layer (7). The glass fiber band (8) and the outer protective layer (9) sequentially wrap the inner protective layer (7). The outer protective layer (9) includes a polyethylene layer and a nylon layer from inside to outside. The optical cable, which is of a full dielectric structure, has great thunder and heavy current shielding properties, and is highly safe and practical.

The invention discloses a notice sending method and a notice sending device. The method comprises steps: to-be-sent notices are acquired from a message queue, wherein all to-be-sent notices are added to the message queue in advance; whether the number of sending threads is smaller than the maximum concurrency is judged, wherein the sending threads are threads for executing notice sending operation; and when the number of sending threads is judged to be smaller than the maximum concurrency, a new sending thread is build, and the to-be-sent notice is sent through the new sending thread. The technical problem of notice sending blocking caused by too many concurrently-sent notices in a related technology can be solved.

The invention discloses a remote monitoring method. The method comprises the following steps of step 1), within a time period T, performing video acquisition on a local scene by a video acquisition module locally; starting to work by a video recording module; when a difference value obtained by comparing one frame is up to a preset value, defining the frame as an abnormal image by a processing device, and recording current time information and the abnormal image of the frame by the processing device; transmitting a recorded video to a cloud data center specific account by the processing device; and meanwhile, transmitting the time information and the abnormal image to a wireless base station by the processing device, forwarding information to a monitoring terminal through the wireless base station, and reminding the monitoring terminal to login the cloud data center specific account to watch the recorded video. Therefore, the load of the data center can be reduced, the normal work of working people is not affected and a high data transmission cost when no special circumstances occur is not needed to be paid, and besides, no network congestion is caused.

The invention discloses a mixed flow magnetorheological valve which comprises a left end cover, a valve spool, a valve body, a guide disk, a magnetic disk, a positioning disk, a gasket, a coil, a sealing ring, a screw and a right end cover. A flow passage between the magnetic disk and the valve body forms an axial damping gap, and flow passages among the magnetic disk, the valve body and the valve spool form radial damping gaps. When current is inputted into the coil, magnetic lines vertically penetrate the axial and radial damping gaps, and the magnetic induction intensity is generated under the action of a magnetic field. The pressure difference in the axial and radial damping gaps can be controlled by adjusting the strength of the current. By the aid of the structure, the magnetorheological valve has enough pressure difference, clogging of the valve is avoided, the performance of the valve is more stable, the adjustable range of the pressure difference is wider, and the magnetorheological valve is accurate in damping gap positioning, compact in structure, small in size, convenient to assemble, particularly suitable for serving as a damper bypass valve and applied to damping systems of industries such as a railway and a traffic.

The invention discloses a hysteroscope. The hysteroscope comprises a hysteroscope sheath and an endoscope which is arranged in the hysteroscope sheath, the hysteroscope sheath comprises an inner sheath body and an outer sheath body, the outer sheath body is provided with a water inlet and a water outlet, an operating electrode is arranged in the inner sheath body, a cleaning device is arranged on the side portion of the endoscope, and the cleaning device is driven by a driving device arranged outside the hysteroscope sheath to scrub the surface of the endoscope; a sliding block is movably arranged on the outer sheath body, a suction tube is arranged between the inner sheath body and the outer sheath body, and the sliding block is connected with the suction tube. The cleaning device is arranged on the hysteroscope sheath to clean the surface of the endoscope, the situation that tissue scraps block the view of the endoscope is avoided, and it is guaranteed that an operation is conducted smoothly. Due to the fact that the suction device is arranged, the detached tissue scraps can be sucked out of the uterine cavity, and the situation that the operation sight line is blocked due to the fact that a large amount of tissue floats in the uterine cavity is avoided. A tissue collection tank is designed to be a two-layer solid-liquid separator device, the blood or other biological interstitial fluid and biological tissue are separated, and collection of biological tissue samples is facilitated.

The invention discloses a multistage cutting and grinding sewage pump. The multistage cutting and grinding sewage pump comprises a sewage pump body and a water inlet base located at the bottom of the sewage pump body, the water inlet base is arranged at the bottom of the sewage pump body, the sewage pump body and the water inlet base are connected and fixed through second bolts, so that the sewage pump body and the water inlet base can be conveniently dissemble and maintain through the second bolts; a connecting piece is installed at the lower end of a rotating shaft, the connecting piece is connected with a cutting device through a first bolt, and the cutting device is located in a water inlet. Impurities such as more impurities, sludge, plastic bags and long fibers contained in a sewage medium are primarily cut through cooperation of a mounting disc and a cutting blade in the cutting device, so that the impurities become small and enter the sewage pump body, larger impurities are prevented from entering the sewage pump body; due to the fact that the connecting piece is connected and fixed to the cutting device through the first bolt, the cutting device can be conveniently maintained and replaced through the first bolts.

The invention discloses a test method for dynamically monitoring water replenishing effects of water curtains of large underground water seal rock cave depots. The test method includes steps of 1), providing constant-pressure or constant-flow liquid by roadways of the water curtains; 2), inputting petroleum into main caverns by oil inlet tubes; 3), metering seepage velocities/seepage flow by fluiddiffusers and flow rate metering devices; 4), detecting seepage water quality record data by water quality detectors and injecting seepage water bodies into the roadways of the water curtains again by circulating pipes and liquid pumps; 5), repeatedly carrying out the steps 1-4, and determining the water quality of reinjection water according to detection data of the water quality detectors and the seepage velocities/the seepage flow. The invention further provides a test device for the water replenishing effects of the water curtains. The test method and the test device have the advantages that influence rules on the permeability of cave depot rock after produced water with different types of water quality is reinjected can be obtained by the aid of the test method and the test device, the optimal reinjection water quality parameters can be quickly determined by the aid of the test method and the test device, and the test method and the test device are low in influence factor and high in accuracy.

The invention discloses a preparation method for ketoxime. The method is characterized in that a microspherical TS-1 catalyst is used for performing ketoxime combination reaction on a ketone, ammonia and hydrogen peroxide reaction system, wherein the weight ratio of ketone to the catalyst to an organic solvent is 1:(0.03-0.15):(1-10); the molar ratio of ketone to ammonia is 1:(1-3); the molar ratio of hydrogen peroxide to ketone is (1-2):1. Compared with the prior art, the preparation method has the advantages that the method is high in oxime selectivity, ketone conversion rate and hydrogen peroxide utilization rate and easy to industrially implement, a few byproducts are produced, TS-1 molecular sieve channels can be prevented from being blocked, the catalyst is high in stability and convenient to separate and recover, a post-treatment process is simple, and an environment for a reaction process is friendly.

The invention discloses a domestic sewage diversion device. The domestic sewage diversion device comprises a box body, a water inlet pipe is connected to the side wall of the box body, a rotary motor is arranged at the upper end of the box body, the rotary motor is arranged on one end of the box body close to the water inlet pipe, a driving shaft of the rotary motor vertically faces down, passes through the top surface of the box body and extends into the box body, the lower end of the driving shaft of the rotary motor is connected to a crushing mechanism, the bottom of the box body is horizontally provided with multiple drainage plates, the drainage plates are arranged in the box body in one side of the crushing mechanism far away from the water inlet pipe, the top surface of the box body is provided with a chute, the top surface of the chute is provided with a first through hole communicating the upper and lower parts, a worm passes through the first through hole, a sliding block is arranged in the chute, the side wall of the sliding block is provided with a threaded hole communicating the left and right parts and a threaded rod is connected to the interior of the threaded hole through threads. The domestic sewage diversion device can effectively crush the large-size garbage in domestic sewage first, then carry out multi-layer filtration and then carry out discharge so that sewer blockage problems are effectively solved.

The invention discloses a fuel screening device for a power plant. The fuel screening device comprises a box body, wherein a feeding hopper is fixedly arranged at the top end of the box body; a PLC controller is fixedly connected to one side of the outer wall of the box body; a detecting box is fixedly arranged at one end of the outer wall of the box body and is internally and movably provided with an inner cylinder; weighing sensors are fixedly arranged at four corners of the bottom end of the inner cylinder and are fixedly connected with the box body; a contacted microwave moisture instrument is fixedly arranged on one side of the outer wall of the detecting box. The detecting box is arranged for screening according to the moisture content of pulverized coal; compared with a traditionalscreening device, the fuel screening device can further improve the screening effect and avoid the influence of excess moisture content of the pulverized coal on the power generating efficiency; a first screening mechanism and a second screening mechanism are arranged for ensuring the particle uniformity of the pulverized coal and can realize separate screening, so that the blocking condition dueto concentrated screening is avoided, the screening efficiency and the screening effect are improved, and further pulverized coal particles can be screened.

The invention relates to a continuous feeding and spraying device, which comprises a box body, a blower device, a medicine powder supplying part, a stirring part, a water inlet pipe and a spraying pipe. The box body is divided into a mixing cavity and a spraying cavity through a division plate; a pipeline is connected between the mixing cavity and the spraying cavity; an electronic control valve a is arranged in the pipeline; the blower device comprises a blower, an air inlet pipe a communicating with the mixing cavity, and an air inlet pipe b communicating with the spraying cavity; an electronic control valve b is arranged on the air inlet pipe a; the medicine powder supplying part comprises a medicine powder cabin and a powder outlet pipe; a plurality of powder outlets a are formed in the lower position of the powder outlet pipe along a length direction of the powder outlet pipe; the stirring part comprises a rotary sleeve sleeving on the powder outlet pipe; a plurality of powder outlets b are formed in the rotary sleeve along a length direction of the rotary sleeve; and a plurality of stirring paddles are further arranged on the rotary sleeve. The continuous feeding and spraying device solves the problems that a pesticide mixing device is complex in structure, inconvenient, poor in dissolving and mixing effect when powder pesticide and water are mixed, uneven in concentration, low in efficiency, and incapable of realizing mixing while spraying at the same time.

The invention provides a harmful gas removal medium, and mainly relates to a permanganate harmful gas removal medium. According to the invention, by adding proper types and quantities of a binder anda foaming agent, the mechanical strength of the harmful gas removal medium is ensured, the porosity inside the harmful gas removal medium is improved, and the possibility of gas passage blockage caused by permanganate precipitation is reduced. Therefore, the use amount of permanganate is reduced, the preparation process is simplified, the service life is prolonged, the maintenance cost is reduced,and the preparation method is more suitable for large-scale production and manufacturing.