41results about How to "Slow motion rate" patented technology

The invention relates to anti-radiation concrete produced from slag aggregate, and a production method thereof so as to effectively consume and utilize mineral waste, and improve an anti-radiation performance and durability of concrete. The anti-radiation concrete produced from slag aggregate comprises the following raw materials, by weight, 140-190 parts of water, 350-630 parts of a cementing material, 750-850 parts of a fine aggregate, 1000-1500 parts of a coarse aggregate, 0.35-1.9 parts of a tackifier, 2.1-7.5 parts of a water reducing agent, and 30-70 parts of fibers, wherein the cementing material comprises cement and a mineral admixture, the mineral admixture comprises silicon ash and fly ash, the cementing material comprises 300-500 parts by weight of the cement, 20-60 parts by weight of the silicon ash and 30-70 parts by weight of the fly ash, the coarse aggregate is a high titanium heavy slag coarse aggregate, the fine aggregate comprises high titanium heavy slag sand and lead powder according to a mass ratio of 1:0.2-3.0, the tackifier is methyl cellulose ether, and the fibers are one or a plurality of material selected from polypropylene fibers, steel fibers and lead fibers.

The invention discloses a wet type electrostatic precipitator and a working method thereof. The wet type electrostatic precipitator comprises a water tank, supporting columns, a dust removing box anda water pump. The left and right sides of the lower end of the water tank are symmetrically provided with the supporting columns. The lower end of the supporting column is provided with a damping wheel. The middle of the upper end of the water tank is provided with the dust removing box. The left side of the upper end of the water tank is provided with a water pump. A water inlet of the water pumpis communicated with the water tank through a water drawing pipe. A water outlet of the water pump is connected to a conduit. The wet type electrostatic precipitator has a reasonable structural design. A flow dividing plate reduces the gas movement rate so that the time of contact with an anode dust removing plate is reduced and the effect of dust removal is increased. A nozzle 2 humidifies gas and under the combined action of the nozzle 2 and a filter screen, pretreatment is carried out so that impurities fall off under the gravity and the dust removal efficiency is increased. A motor drivesa rotation shaft to rotate so that a dust removing brush rotates and scrubs the flow dividing plate and the filter screen and thus clogging is prevented and a service life is prolonged. The wet typeelectrostatic precipitator prevents frequent replacement.

The invention relates to environmental-friendly functional aggregate-based high-homogeneity radiation-resistant concrete. The concrete consists of water, a cementing material, a fine aggregate, a coarse aggregate, a tackifier, a water reducing agent and fibers, wherein the cementing material consists of cement and a mineral admixture; the mineral admixture consists of silica fume and coal ash; the fibers are polypropylene fibers, wherein 1m<3> of concrete comprises the following components: 140 to 160 kg of the water, 300 to 500 kg of the cement, 20 to 60 kg of the silica fume, 30 to 70 kg of the coal ash, 700 too 800 kg of the fine aggregate, 1,000 to 1,300 kg of the coarse aggregate, 0.35 to 1.9 kg of the tackifier, 2.1 to 7.5 kg of the water reducing agent, and 0.6 to 1.0 kg of the polypropylene fibers. The demixing degree of the concrete can be reduced to 0.05; and the concrete has the characteristics of high rheological property, high strength property and durability, and can realize resource utilization of heavy metal-containing urban sludge, mud or industrial waste.

A butterfly valve includes a duct defining a flow pathway and a valve disc rotably disposed in the flow pathway. A pneumatic actuator includes an intermediate chamber housing an actuator piston and is operably connected to the valve disc to drive rotation of the valve disc. A downstream bleed conduit extends from the flow pathway downstream of the valve disc to the intermediate chamber to pressurize the intermediate chamber thereby reducing a rate of movement of the valve disc in the flow pathway.

The invention relates to a structure of a reversing valve. The reversing valve comprises a control reversing valve and an action reversing valve, and two groups are matched to realize flow velocity variable control over a pressure medium. Compared with the prior art, the structure of the reversing valve has the advantages that: through a design of a second valve rod and two overflow valves, when a piston moves to be about to contact the end of a piston cylinder, the reflux quantity of the pressure medium is reduced, and the motion resistance of the piston is increased, so that the motion velocity of the piston is reduced, the piston slowly touches the end of the piston cylinder, the piston and the end of the piston cylinder are prevented from being collided and worn when the piston moves at a high speed, the service life of the piston cylinder is effectively prolonged, and the operation safety and stability of the piston cylinder are ensured simultaneously.

The invention relates to a multifunctional valve and a multifunctional valve combination valve. The multifunctional valve and the multifunctional valve combination valve comprise a valve body, a valve cavity which is arranged in the valve body and a valve rod which is arranged in the valve cavity, wherein a middle inlet, a left inlet and a right inlet are arranged on one side of the valve body, the middle inlet is used for the entering of pressure mediums, the left inlet and the right inlet are used for the selective entering of the pressure mediums, a left outlet and a right outlet are arranged on the other side of the valve body, the left outlet and the right outlet are used for the discharging of the pressure mediums, and the left inlet and the left outlet and the right inlet and the right outlet are selectively communicated in a corresponding mode through the matching of the valve cavity and the valve rod. The multifunctional valve and the multifunctional valve combination valve are characterized in that the left inlet is communicated with a left cavity correspondingly, the right inlet is communicated with a right cavity correspondingly, and correspondingly, the left cavity and the right cavity are communicated with the left outlet and the right outlet through a left throttle valve and a right throttle valve. According to the multifunctional valve and the multifunctional valve combination valve, a piston can be slowly contacted with the end portion of a piston cylinder, the collision and the abrasion to a piston rod when the piston is moved rapidly are avoided, the service life of the piston cylinder is prolonged effectively, and meanwhile the operation safety of the piston cylinder and the stability of the piston cylinder are ensured.

The invention provides a bridge inspection vehicle leveling device and bridge inspection equipment. As a buffering device is arranged in the bridge inspection vehicle leveling device, the buffering device can apply an acting force to a portal frame when a truss overhauling platform is inclined, the portal frame drives the truss overhauling platform so that the truss overhauling platform can slowlyrecover to the horizontal state; therefore, when a running mechanism moves to a steep slope position, the truss overhauling platform is prevented from shaking to cause injuries of operation workers within the truss overhauling platform and on a lifting overhauling platform and affect equipment within the truss overhauling platform and on the lifting overhauling platform.

The invention discloses a multi-stage spray treatment device for waste gas of a printing and dyeing setting machine. The multi-stage spray treatment device comprises purification chambers including a primary purification chamber and a secondary purification chamber, wherein the interior of the primary purification chamber is divided into multiple layers of purification areas through partition boards; the partition boards are horizontally arranged in parallel in a staggered manner; an all-directional fine atomization area is arranged above a second air inlet of the secondary purification chamber; a water curtain wall blockage area is arranged at the upper part of the fine atomization area; a plurality of tower plates are vertically arranged in the water curtain wall blockage area, a plurality of spray nozzles are placed between the inner wall of the water curtain wall blockage area and the tower plates and between every two tower plates in a staggered manner, and the outlet directions of the spray nozzles are opposite; the spray nozzles spray airflow and water to the inner wall of the water curtain wall blockage area or the tower plate walls simultaneously to form a water curtain wall, so that liquid drops flow downwards along the tower plate walls or the inner wall of the water curtain wall blockage area, and the purified gas runs upwards continuously. According to the invention, the spray mechanism has three different effects, so that the dust collecting efficiency is improved, the production cost is reduced, and the multi-stage spray treatment device can be widely applied to treatment of waste gas of the printing and dyeing setting machine.

The invention relates to the technical field of pipeline production, in particular to a heat-preservation durable gas pipeline and a preparation technology thereof. The heat-preservation durable gas pipeline comprises a gas pipeline body, an outer layer sleeve and annular connecting pieces. The gas pipeline body sequentially comprises an inner layer pipe blank, a heat-preservation interlayer and an outer layer pipe blank from inside to outside. An anti-corrosion coating is sprayed on the outer wall of the outer layer pipe blank. A water-proof coating is sprayed on the inner wall of the inner layer pipe blank. The heat-preservation interlayer is embedded between the inner layer pipe blank and the outer layer pipe blank. The inner layer pipe blank and the outer layer pipe blank are connectedthrough the annular connecting pieces welded to the left ends and the right ends of the inner layer pipe blank and the outer layer pipe blank. The outer layer sleeve is fixed to the outer layer pipeblank in a sleeving mode. According to the heat-preservation durable gas pipeline and the preparation technology thereof, the heat-preservation property of the gas delivery pipeline can be improved significantly through the heat-preservation interlayer, and the gas delivery efficiency is improved; and the prepared pipeline has the high acidic medium etching resisting capability by using quartz powder and nano-zinc oxide in the outer layer sleeve, and accordingly the service life of the gas pipeline is prolonged.

The invention discloses a double-static waste gas wet method electrostatic dust collector. The double-static waste gas wet method electrostatic dust collector comprises a dust collector main body, wherein the dust collector main body comprises a dust collector shell; a first uniform direct-current high-voltage electric field mechanism and a second uniform direct-current high-voltage electric field mechanism are arranged in the dust collector shell; the first uniform direct-current high-voltage electric field mechanism is arranged at the front side of the second uniform direct-current high-voltage electric field mechanism; an air inlet communicated with the first uniform direct-current high-voltage electric field mechanism is formed in the left side of the middle of the dust collector shell; an air outlet is formed in the right side of the middle of the dust collector shell; a gas condenser is arranged in the inlet position of the air inlet; atomization spraying mechanisms are respectively arranged above the first uniform direct-current high-voltage electric field mechanism and the second uniform direct-current high-voltage electric field mechanism; and the first uniform direct-current high-voltage electric field mechanism, the second uniform direct-current high-voltage electric field mechanism and the atomization spraying mechanisms are all controlled by an electric control device.

The invention relates to the technical field of knitting machinery, and discloses knitwear product rolling-inspecting and selvedge-uncurling equipment which comprises a base, wherein a second rack anda third rack are respectively mounted on a left side and a right side of the base; a first support shaft and a second support shaft are mounted directly behind centers of inner surfaces of the secondrack and the third rack; a third support shaft and a fourth support shaft are mounted directly in front of the first support shaft; an image collector with a camera at the bottom end is mounted rightabove a knitted textile product between the third support shaft and the first support shaft; the image collector is connected with a visual checker; the visual checker is connected with a PLC; the PLC is connected with a rejection controller; a selvedge uncurler is mounted right above a fourth shaft sleeve; a rolling shaft is mounted right above a front end of an upper surface of the base. The knitwear product rolling-inspecting and selvedge-uncurling equipment provided by the invention solves technical problems that the conventional knitwear product rolling machine cannot realize intelligentinspection, intelligent rejection of defective products and intelligent selvedge-uncurling at the same time.

The invention provides a damping type mute track structure applied to a sliding door, which comprises a frame body and partition plates fixedly mounted in the frame body and symmetrically arranged, and the frame body is further movably provided with symmetrically arranged movable doors; the first track structures are movably and symmetrically arranged on the frame body and connected with the movable door, and the first track structures move when the movable door is stressed so that the movable door can move; the second rail mechanisms are movably and symmetrically arranged between the frame body and the partition plate and are connected with the movable door; the limiting mechanism is movably arranged in the frame body and connected with the second track mechanism, and the limiting mechanism fixes the second track mechanism after the second track mechanism moves to the maximum stroke position; and the transmission assembly is connected with the second rail mechanism and the limiting mechanism.

The invention relates to a tracking method of a diver. The method includes the following steps that: step 1) the observation value of the state of the diver at a tk+1 time point is received; step 2) a movement model set of the multi-direction movement of the diver at a tk time point is established; step 3) the diver state estimation initial value and covariance estimation initial value of each movement model at the tk+1 time point are calculated according to the movement model set; step 4) the diver state estimation initial value and covariance estimation initial value of each movement model at the tk+1 time point are inputted into a plurality of filters, and the diver state estimation and covariance estimation of each movement model are calculated based on the observation value of the state of the diver at the tk+1 time point; step 5) the probability of each movement model at the tk+1 time point is updated according to the diver state estimation and covariance estimation of each movement model at the tk+1 time point; and 6) fusion estimation is performed on the states of the diver according to the updated probability of each movement model, so that the estimation of the state of the diver and the estimation of the covariance of the state of the diver at the tk+1 time point can be realized. The method of the invention has the advantages of high precision and high stability.