42results about How to "Prevent pressure" patented technology

The invention discloses a hydraulic walking control system and method and a high-altitude operation vehicle. The system comprises a walking pump, a first flow distributing and collecting valve, a second flow distributing and collecting valve and all walking motors. A port A of the walking pump is connected with a third port of the first flow distributing and collecting valve and a third port of the second flow distributing and collecting valve, and a port B of the walking pump is connected with a port B of the left front walking motor, a port B of the left rear walking motor, a port A of the right front walking motor and a port A of the right rear walking motor. A fourth port of the first flow distributing and collecting valve is connected with a port A of a left front walking motor, and a second port of the first flow distributing and collecting valve is connected with a port A of a left rear walking motor; a fourth port of the second flow distributing and collecting valve is connected with a port B of the right front walking motor, and a second port of the second flow distributing and collecting valve is connected with a port B of the right rear walking motor. The problem that the walking effect is affected due to the fact that flow and pressure change is caused by slipping during walking is solved.

A mining truck lifting valve comprises a three-position three-way reversing valve, and a shuttle valve, a pressure reducing valve, two sequence valves and an electromagnetic valve are arranged on the reversing valve. Oil inlets P and P1, oil return ports T and L, control interfaces K1 and K2 and a working port A are formed; an oil inlet P is respectively communicated with a first sequence valve, a pressure reducing valve and one end of a shuttle valve, an oil inlet P1 and an outlet of the first sequence valve are both communicated with a port P of a reversing valve, a pressure reducing outlet of the pressure reducing valve is respectively communicated with inlets of two electromagnetic valves, an overflow port of the pressure reducing valve and an oil drainage port of each electromagnetic valve are respectively communicated with an oil return port L, and an outlet of the first electromagnetic valve is communicated with a control interface K1. The outlet of the second solenoid valve communicates with one end of the reversing valve; the other end of the reversing valve is communicated with a control interface K2; a small valve element is arranged in the valve cover at one end, the working port A is communicated with the port A of the reversing valve and the other end of the shuttle valve, and an outlet of the shuttle valve is communicated with an inner cavity of the small valve element through a second sequence valve. The valve is compact in structure, large in flow of the valve body, stable in system and capable of avoiding the pressure building fault of the system.

Provided are a battery cell, a battery, an electrical apparatus, and a method and device for manufacturing a battery cell. The battery cell includes a case (110), an end cover (120), an electrode assembly (130) and a solder (140), the case (110) has an accommodating cavity (111) and an opening at one end; the end cover (120) is connected to the case (110); the electrode assembly (130) is provided in the accommodating cavity (111), the electrode assembly (130) has a first tab (131), and the first tab (131) faces the opening; the solder (140) is provided between the end cover (120) and the first tab (131) and connects the end cover (120) and the first tab (131); an insulating member (150) is also provided between the end cover (120) and the first tab (131), an insulating cavity (151) is provided on the insulating member (150), a feed port (152) is provided on one side of the insulating cavity (151), and the feed port (152) faces the solder (140).

The utility model discloses a kind of gas-liquid two-phase flow wide gas-liquid ratio and wide-range measurement system, belong to oil-gas field multiphase flow measurement technical field, including flow computer, separation component, fluid inlet pipeline and fluid outlet pipeline, the separation component is communicated with fluid inlet pipeline, liquid level meter and inlet pressure gauge are equipped on the separation component, gas phase pipeline and liquid phase pipeline respectively communicated with its inside are equipped on the separation component, liquid level control mechanism is equipped in the separation component, the liquid level control mechanism is used to close separation component and gas phase pipeline passage when liquid level in separation component rises, the one end of gas phase pipeline and liquid phase pipeline away from separation component is communicated with fluid outlet pipeline, gas phase flowmeter is equipped on the gas phase pipeline, liquid phase flowmeter and liquid path valve are equipped on the liquid phase pipeline.The utility model can select different measurement mode according to different working conditions, ensure the accuracy of measurement.

The invention belongs to the technical field of flue gas denitration, and discloses a gas leakage and ash leakage prevention through type water-cooling long spray gun for SNCR denitration, which comprises a spray gun body, the head of the spray gun body is fixed on a water-cooling wall tube on one side of a furnace wall through a fixing piece; the furnace wall sleeve is embedded and fixed on a water cooling wall tube on the other side of the furnace wall, and the tail part of the spray gun body penetrates out of the furnace wall sleeve; the high-temperature-resistant expansion joint is arranged at the tail part of the spray gun body in a sleeving manner, and the spray gun body is fixedly connected with the furnace wall sleeve through the high-temperature-resistant expansion joint. The high-temperature-resistant expansion joint is arranged outside the spray gun, and when the boiler is started and stopped or the load changes, the water cooling wall generates transverse expansion, the high-temperature-resistant expansion joint can generate corresponding transverse expansion, so that the spray gun can adapt to the transverse expansion of the water cooling wall of the boiler, the head of the spray gun is prevented from falling off, and meanwhile the sealing effect is achieved; and the phenomena of air suction caused by negative pressure of the hearth or ash leakage caused by positive pressure of the hearth are prevented, and a good environment-friendly effect is achieved.

The utility model discloses a back spray piece and back spray assembly, back spray piece includes the body, switching part and first reset part. The body is equipped with the water inlet hole and is suitable for with the water outlet hole of water inlet hole intercommunication, and the back spray water hole is suitable for along the first direction parallel to the horizontal plane and / or the direction of inclination to the first direction and washes to the back plate of human body, switching part is suitable for the movement between the first position and second position, and switching part is in the first position, makes water inlet hole and back spray water hole intercommunication, in the second position, makes water inlet hole and back spray water hole not intercommunication, thereby realizes the switching of waterway. The both ends of first reset part act on the body and switching part respectively, and are suitable for energy storage when switching part moves to the first position, and release energy to drive switching part to reset to the second position when back spray water hole does not water, prevent the next time opening, and back spray water hole directly water, lead to the splash problem of opening, and simultaneously, it can also assist switching part to switch to the second position, and it is more labor-saving when switching.

The utility model belongs to the technical field of explosion-proof bag type dust collectors, and particularly relates to an explosion-proof bag type dust collector which comprises a dust collector body, the dust collector body is provided with an auxiliary pressure relief device; the top of the fixed seat is fixedly connected with a fixed cylinder; a telescopic cavity is formed in the fixed cylinder; a fixed rod is fixedly connected to the bottom of the cambered surface of the inner wall of the telescopic cavity; a lifting rod is mounted in the sliding hole in a sliding manner; a lifting plate is fixedly connected to the top end face of the lifting rod. A spring is mounted outside the section of the lifting rod in a sleeving manner; a sliding block is installed in the sliding groove in a sliding mode. The end face of the sliding block is connected to the lifting plate. The top end face of the fixed ring plate is fixedly connected with a supporting rod. The top of the supporting rod is fixedly connected with a dustproof plate. An arc-shaped net plate is mounted between the supporting rods; and through the action of the auxiliary pressure relief device, the effect of quickly relieving the pressure of the structural cavity is achieved, large pressure intensity in the dust collector can be avoided, and potential safety hazards are reduced.

The utility model discloses a driving device for a rail robot, which comprises a mounting frame, guide wheels and a bearing wheel are arranged at the upper end of the mounting frame, the guide wheels are positioned on two sides of the bearing wheel, the guide wheels and the bearing wheel are positioned on a T-shaped rail, a driving motor is mounted on the side surface of the mounting frame, a power output end of the driving motor is connected with a driving wheel, and a power output end of the driving motor is connected with a driving motor. The driving wheel is located on the lower surface of the T-shaped rail, and a spring adjusting mechanism is further arranged on the side face of the mounting frame and used for adjusting the pressing force between the driving wheel and the T-shaped rail. The utility model has the beneficial effects that: a worker adjusts the compression amount of the spring by adjusting the spring adjusting mechanism so as to adjust the pressing force of the T-shaped track, when the driving motor drives the driving wheel to pass through an obstacle on the T-shaped track, the spring as a suspension of the driving wheel is compressed, and when passing through the obstacle, the spring resets, so that the driving wheel can be driven to rotate. Therefore, the driving wheel moves up and down, and consequences caused by too large or too small pressing force are avoided.

The utility model discloses a pair of novel wet room out-of-focus lens frame glasses, which comprises a glasses frame, and a closed ring is attached and connected to the surface of the glasses frame, and relates to the technical field of glasses frames. According to the utility model, the lens is designed into a honeycomb-shaped multi-focus lens structure through the defocus lens, so that an object image is ensured to present relative myopic defocus on the peripheral retina, the eye axis extension and the myopic progress can be inhibited, and after the defocus lens is combined with the improved wet chamber glasses, the myopic development is controlled, and the myopic effect of the improved wet chamber glasses is improved. Dry eyes and allergic conjunctivitis are effectively prevented, the wearing comfort and the long-term use safety are improved by improving the material of the closed ring of the wet chamber glasses and setting the closed ring into TPE, the glasses frame and the closed ring can be quickly fixed, disassembled and assembled by arranging a mortise and tenon joint structure on the face-close side surface of the glasses frame, the nose pad is adopted for bearing, and the wearing comfort and the long-term use safety are improved. The lower end of a traditional wet chamber mirror can be prevented from bearing load, pressure is applied to skin of the lower eyelid and the upper jaw, and eversion of the eyelid is further avoided.

This utility model relates to the field of bridge engineering construction technology and discloses a bridge pile grouting device for bridge construction, including a bridge pile grouting device body. A sealing disc is movably connected to the bottom of the bridge pile grouting device body, and several fixing blocks are fixedly connected to the outside of the bridge pile grouting device body. A ring is fixedly connected to one side of the fixing blocks, a mud-shoveling block is slidably connected to one side of the ring, and a support plate is fixedly connected to one side of the mud-shoveling block. Before the cement is poured, the mud-shoveling block slides on the surface of the ring, which can drive the support plate to move. At the same time, by adjusting the bolt and the threaded connection inside one end of the support plate, the limiting disc can be moved towards one end of the hollow tube, thereby facilitating the clamping and fixing of the hollow tube. This avoids the worker holding the hollow tube for a long time and pressing against the sealing disc, thus bringing convenience to the worker's operation.

The utility model provides a tractor rear suspension hydraulic system which comprises an oil pump, a reversing valve, a bypass valve and a suspension oil cylinder, an inlet of the oil pump is connected with an oil tank, an outlet of the oil pump is connected with a pressure oil port of the reversing valve, and an oil return port of the reversing valve is connected with the oil tank; a first interface of the reversing valve is connected with a control oil port of the bypass valve, and a second interface of the reversing valve is provided with a descending branch which is connected with the suspension oil cylinder; a lifting branch and a bypass branch are arranged on an oil way from the oil pump to the reversing valve, a one-way valve is arranged on the lifting branch, and an outlet of the one-way valve is connected with the suspension oil cylinder. The bypass branch is connected with an inlet of the bypass valve, and an outlet of the bypass valve is connected with the oil tank. When the machine tool is lifted to the required height, the bypass valve is controlled to be conducted through the reversing valve, pressure oil of the oil pump returns to the oil tank through the bypass valve, and pressure building of a hydraulic pipeline is avoided; the response speed is high; and the load keeping function of the suspension oil cylinder is ensured.

The invention relates to the technical field of aerospace equipment, in particular to a propellant adjusting device which comprises a main shell, an adjusting part and a driving part, the main shell is provided with a working cavity, an inlet and an outlet, the inlet and the outlet are communicated with the working cavity, the inlet and the outlet are communicated through a communicating cavity, and the main shell is provided with a sliding part in the working cavity; the adjusting part comprises an adjusting head and a penetrating rod which are connected with each other, the penetrating rod penetrates through the sliding part in a sliding mode, the penetrating rod can slide relative to the sliding part and adjust the opening degree of the communicating cavity, a first movable sealing part and a second movable sealing part are arranged between the penetrating rod and the sliding part, and the first movable sealing part and the second movable sealing part are arranged in the sliding direction of the penetrating rod in a spaced mode; a discharging cavity is formed between the penetrating rod and the sliding part and located between the first movable sealing piece and the second movable sealing piece, the sliding part is provided with a discharging hole communicating with the discharging cavity, and the driving piece is used for driving the penetrating rod to slide. According to the propellant adjusting device provided by the invention, the sealing performance between the main shell and the adjusting part is further improved, and reliable supply of the propellant is ensured.

The invention discloses a welding wire bonding structure and a welding wire bonding process, and the welding wire bonding structure comprises a chip which is provided with a recessed bonding window, and the interior of the bonding window is provided with an exposed Pad; the gold cake is positioned in the bonding window and is combined on the Pad; and one end of the welding gold wire is welded with the gold cake. According to the welding wire bonding structure, the concave bonding window is formed in the passivation layer, the Pad is exposed in the bonding window, the gold cake is welded to the exposed Pad, and the welding chopper is directly welded to the gold cake, so that the welding chopper can be prevented from making contact with the Pad and the passivation layer, the welding chopper is prevented from abutting against the Pad and the passivation layer, and therefore the Pad and the passivation layer can be prevented from being damaged. According to the welding wire bonding structure disclosed by the invention, the defect that the chip and the passivation layer are easy to damage and crack in the welding process is overcome, so that the product reliability and the product yield can be improved.

The utility model belongs to the technical field of shoe soles, and particularly relates to an air cushion shoe sole with a flowing air chamber, which comprises a midsole and an outsole, a plurality of matching holes are arranged at the bottom of the midsole, a plurality of U-shaped grooves are arranged among the matching holes, and anti-skidding bumps and air cushion bumps are arranged at the bottom of the outsole. The insole and the outsole are matched to form an air chamber, the matching holes are hemispherical, and the air cushion protruding blocks are higher than the anti-skid protruding blocks. Automatic adjustment of air pressure between the air chambers is achieved through the communicating grooves, overlarge local pressure intensity is avoided, foot impact peak pressure is reduced, and joint loads are relieved.

The invention relates to the technical field of hydraulic valves, in particular to a hydraulic lock cylinder with a steel ball sealing structure which comprises a reversing valve body, a hydraulic valve body is installed at the upper end of the reversing valve body, a steel ball sealing assembly is arranged in the hydraulic valve body, and a filtering assembly used for filtering oil is fixedly installed on the side wall of the hydraulic valve body. By arranging an electric reset steel ball sealing structure and combining with a manual reset structure, when electric reset cannot be completed, the reset process can still be completed manually, the problem that the test difficulty and time cost are increased due to oil port pressure building caused by valve rod clamping stagnation is solved, meanwhile, a filter structure is arranged on the side wall of a hydraulic element, and the test efficiency is improved. According to the hydraulic lock, oil entering the hydraulic lock can be filtered and subjected to impurity removal treatment, the possibility of clamping stagnation of the valve rod is reduced, and therefore the smoothness of resetting of an execution element is improved, and the problem of pressure building of an oil port is solved.

The electromagnetic valve element assembly comprises a movable iron core, a liquid guide pipe body, a connecting base, an abutting block, a second spring and a check ball, the liquid guide pipe body is provided with an opening, the movable iron core can reciprocate in the axial direction of the liquid guide pipe body, and the connecting base is fixedly connected to the side, facing the liquid guide pipe body, of the movable iron core; the abutting block is located on the side, facing the liquid guiding pipe body, of the connecting base. The second spring is used for applying elastic force to the abutting block in the direction of the liquid guiding pipe body. The communication stopping ball body is positioned between the opening of the liquid guide pipe body and the pressing block, and is matched with the opening of the liquid guide pipe body; the device further comprises a linkage ring body and a linkage sleeve, the linkage ring body is arranged on the periphery of the go-stop ball body in a sleeving mode, a spherical surface matched with the linkage ring body is formed on the inner circumferential surface of the linkage ring body, and the go-stop ball body can deflect in the linkage ring body. According to the electromagnetic valve, the abutting position of the stop-pass piece can be adjusted, extrusion and abrasion borne by the stop-pass piece are dispersed, and the situation that the electromagnetic valve is damaged due to excessive local abrasion is avoided.

The utility model relates to a high-level oil tank, in particular to an integrated high-level oil tank and a lubricating oil supply system, and solves the technical problems that fault points of an oil supply pipeline are easily increased and the pipeline design difficulty is increased due to the fact that the high-level oil tank is controlled to operate by adopting three valve groups in the prior art. The integrated high-level oil tank comprises a high-level oil tank body and a pipeline connected with the high-level oil tank body. An oil inlet is formed in the bottom of the high-level oil tank body, and an oil return hole is formed in the top; the pipeline comprises an oil inlet pipeline and an oil return pipeline, one end of the oil inlet pipeline is connected with the oil inlet hole, one end of the oil return pipeline is connected with the oil return hole, the other end of the oil inlet pipeline is used for being connected with an oil supply pipeline of the lubricating oil station, and the other end of the oil return pipeline is used for being connected with an oil tank of the lubricating oil station; the oil return pipeline is connected with a breathing cap used for communicating the inside of the high-position oil tank body with the outside atmosphere, and a breathing opening in the breathing cap is higher than the top of the high-position oil tank body.

The utility model relates to the technical field of shield tunneling machines, in particular to an anti-gushing device of a screw conveyer, the screw conveyer is provided with a conveying pipe and a screw conveying shaft, and a pressure relief mechanism is arranged on the pipe wall of one end, close to a feeding port, of the conveying pipe and is correspondingly connected with a conveying pump so as to discharge water gushing into the conveying pipe out of the screw conveyer; the cooling mechanism is arranged in the middle of the conveying pipe and used for cooling and condensing sludge in the conveying pipe. The pressure relief mechanism is arranged, internal pressure relief can be carried out when the spiral conveyor is not used for conveying sludge, the internal pressure intensity is prevented from being too large, meanwhile, the cooling mechanism is adopted for cooling internal sludge, a waterproof curtain wall is formed, water is prevented from permeating to the discharging opening, and therefore the gushing phenomenon is reduced to the maximum extent.

The utility model discloses a connector pressure relief assembly allowing under-pressure operation. The connector pressure relief assembly comprises a plug part and a liquid collection part, the plug part comprises a plug shell, a sealing block and a spring, the sealing block and the spring providing elastic force for the sealing block to enable the sealing block to be located at the front end of the plug are arranged in the plug shell, and a center hole axially penetrates through the center of the left end of the sealing block; the liquid collecting part comprises a liquid collecting shell and an end cover shell, the end cover shell is located at the tail of the liquid collecting shell, the liquid collecting shell is connected to the rear end of the plug shell, a piston rod is axially arranged in the liquid collecting shell, the tail end of the piston rod penetrates through the end cover shell, and by pushing and pulling the rear end of the piston rod, a liquid collecting cavity with the variable size is formed in an inner cavity of the liquid collecting shell. During liquid discharging, the pressure relief assembly is in a disconnected state, the piston rod is pushed forwards, the cavity in the pressure relief assembly is squeezed, and the medium is discharged from the center hole. During liquid drainage, the liquid collecting shell does not need to be unscrewed, the piston rod is directly pushed and pulled, media in the cavity are drained through the center hole, and liquid drainage is more convenient.

The plug valve comprises a valve body and a pressure relief structure, and the valve body is provided with a first circulation cavity, a second circulation cavity and a mounting cavity which communicate with one another; the pressure relief structure comprises a rotating part and a non-return part, the rotating part is rotationally arranged in the mounting cavity, a penetrating part and a communicating part communicating with the penetrating part are formed in the rotating part, the rotating part is suitable for rotating relative to the valve body under the action of external force, so that the penetrating part communicates with the first circulating cavity and the second circulating cavity, and the non-return part is arranged in the communicating part; when the rotating part is assembled on the valve body, air in the mounting cavity is suitable for flowing into the penetrating part from the communicating part through the non-return part, and when the penetrating part communicates with the first circulating cavity and the second circulating cavity, air is suitable for flowing into the first circulating cavity and the second circulating cavity from the penetrating part so as to balance the pressure in the mounting cavity. According to the plug valve of the structure, the pressure in the mounting cavity can be balanced, the rotating piece and the valve body cannot be blocked, and normal work of the plug valve can be guaranteed.

The invention discloses a hot blast stove air supply signal fault detection and troubleshooting method, which comprises the following steps: arranging a cold air pressure measuring point on a cold air pipe of a hot blast stove, monitoring the pressure N1 of the cold air pipe in real time, arranging a hot air pressure measuring point on a hot air pipe of the hot blast stove, and monitoring the pressure N2 of the hot air pipe in real time. In the switching process of the working state of the hot-blast stove, after an air supply signal indicating that a cold air valve and a hot air valve of the original burning hot-blast stove are opened in place is obtained, the pressure condition in the hot-blast stove can be judged according to N1-N2 obtained through real-time monitoring, and then whether the cold air valve and the hot air valve of the hot-blast stove are normally opened in place or not is judged; and whether a cold blast valve of the original burning hot blast stove and an air supply signal for opening the hot blast valve in place fail is detected, so that safety production accidents such as blast furnace tuyere slag filling, hot blast stove pressure building and blast furnace blower surge are avoided.

The utility model relates to the field of metal casting sand recovery equipment, in particular to a sand recovery device for metal casting, which comprises a recovery tank and a hopper, the hopper is mounted at the top of the recovery tank, the hopper is communicated with the recovery tank, an air inlet hole is formed in the side wall of the recovery tank in a penetrating manner, an air inlet pipe is mounted at the air inlet hole, and the air inlet pipe is communicated with the hopper. The gas inlet pipe is used for injecting high-pressure gas into the recovery tank, a recovery hole is further formed in the side wall of the recovery tank in a penetrating mode, a recovery pipe is installed at the recovery hole, one end of the recovery pipe is communicated with the recovery tank, and the other end of the recovery pipe is communicated with a floating sand box; a feeding hole is formed in the top of the recycling tank in a penetrating mode, the bottom of the hopper is inserted into the feeding hole in a penetrating mode, a plug is arranged in the recycling tank, and the plug is arranged in a sliding mode in the direction close to or away from the feeding hole. The purpose of the application is to effectively improve the recovery efficiency and the recovery effect of recovering sand leaked from the floating sand box into the floating sand box.

The utility model belongs to the technical field of hydraulic systems, and discloses a hydraulic control system and engineering machinery, the hydraulic control system comprises an oil tank, an oil pump, a reversing valve, a first hydraulic motor, a second hydraulic motor and an oil supplementing piece, the oil tank is communicated with an oil inlet of the reversing valve through the oil pump, and a working oil port A1 of the reversing valve is communicated with an oil port B1 of the first hydraulic motor; an oil port B2 of the first hydraulic motor communicates with an oil port C1 of the second hydraulic motor through a first communicating pipe, an oil port C2 of the second hydraulic motor communicates with a working oil port A2 of the reversing valve through a third communicating pipe, and the oil supplementing part is used for conveying hydraulic oil to the first communicating pipe or conveying the hydraulic oil of the first communicating pipe to the third communicating pipe; the engineering machinery comprises the hydraulic control system. The hydraulic control system provided by the utility model is used for engineering machinery and can avoid air suction or pressure building of an oil way caused by inconsistent rotating speeds of the two hydraulic motors during turning, so that the problem of differential speed is solved.

The present invention relates to a clamping mechanism of a pliers body, comprising: a connecting portion; and at least two clamping portions circumferentially arranged on the side wall of the connecting portion, which are used to clamp a workpiece; wherein the workpiece comprises a pliers body and a hook claw extending outward from one end of the pliers body, and a shoulder with an arc-shaped surface is formed at a portion where the hook claw is integrally combined with the pliers body; the clamping portion comprises a first clamping module corresponding to the pressed shoulder and a second clamping module for clamping the other end of the workpiece, a first clamping jaw is pivotally connected to the first clamping module, and the first clamping module and the second clamping module are driven to close together by a driver in the clamping portion, and the first clamping jaw is driven to rotate to adjust the first clamping jaw to fit on the shoulder, and maintain the contact position of the first clamping jaw with the workpiece to ensure the gripping effect of the first clamping jaw. The clamping mechanism has a simple structure and is easy to use.

This invention relates to the field of oil and gas extraction technology, and discloses an ultra-high temperature and ultra-high pressure acid-rock reaction simulation device and experimental method. The device includes a reaction vessel, an acid inlet pipe, a high-pressure gas inlet pipe, and a connecting pipe. A magnetic coupler is fixedly installed at the top of the reaction vessel. A rotating shaft is rotatably connected inside the reaction vessel. A disk is fixedly connected to the top of the rotating shaft. An auxiliary component is fixedly installed inside the rotating shaft. The auxiliary component includes an air bladder. A gas guide pipe is fixedly installed inside the air bladder. A fixed column is fixedly connected to the end of the gas guide pipe away from the air bladder. Multiple telescopic plates are slidably connected inside the fixed column. An elastic element is fixedly installed at the end of the fixed column away from the reaction vessel. The telescopic plates automatically extend as the rotating shaft rotates, individually agitating the acid at the rock face, more closely resembling the actual flow state of downhole acid in fractures, thus improving the fidelity of the experimental simulation.

The invention discloses a blast furnace environment-friendly damping-down method based on a dry-method coal gas dust removal system. The blast furnace environment-friendly damping-down method comprises the steps that the air inlet pressure of a blast furnace is reduced to 200 KPa; opening a clean gas outlet of each cloth bag type dust collector, and closing the TRT; only hot air is conveyed to the blast furnace, and when the air inlet pressure of the blast furnace is gradually reduced to 60 KPa, steam is introduced into the furnace top of the blast furnace; opening a clean gas blowback port of each cloth bag type dust collector, closing a clean gas outlet of each cloth bag type dust collector, opening a raw gas port and a diffusion port of each cloth bag type dust collector, closing an air inlet of the blast furnace, and starting damping down of the blast furnace; according to the method, equipment transformation investment is not needed, damping-down is conducted through a dry-method gas dust removal equipment system widely applied to a modern iron-making blast furnace, and blast furnace damping-down furnace top gas dust removal and safe recovery can be achieved.

The invention relates to the technical field of pipeline hoisting, and discloses municipal pipeline hoisting equipment with a reducing adaptive structure, which comprises a side plate, the bottom of the side plate is fixedly connected with a bottom plate, the top of the side plate is fixedly connected with a power device, the top of the power device is fixedly connected with a rotating disc, and the top of the rotating disc is fixedly connected with a compression block. Compression cavities are fixedly connected to the two sides of the inner wall of the side plate, the clamping assembly comprises pushing rings slidably connected with the interiors of groove holes in the two sides of the shrinkage cavity block, an extrusion belt is fixedly connected to the left side of the inner wall of the shrinkage cavity block, and an extrusion pipe is fixedly connected to the end, away from the left side of the inner wall of the shrinkage cavity block, of the extrusion belt; the extrusion pipe is slidably connected with the two sides of the inner wall of the shrinkage cavity block through sliding blocks. And through the arrangement of the clamping assembly, pipelines of different sizes can be clamped, the angle of the clamping device does not need to be manually adjusted, and the situation that the pipelines are loosened and inclined due to the angle adding problem in the transportation process is avoided.

The invention discloses a simulated breast milk creep feed production device which comprises a first shell, a second shell, a third shell, a telescopic device, a first rotating shaft, a barrel, a power device, breathable cloth, a spiral blade, a sealing piece and an end plate. A plurality of telescopic devices are symmetrically arranged on the outer side of a first shell, a second shell is arranged on the lower portion of the first shell, a third shell is located below the second shell, the telescopic devices are connected with the upper end of the third shell, a first rotating shaft is arranged in the middle of the second shell, a spiral blade is arranged on the lower portion of the first rotating shaft, and a barrel is arranged on the outer side of the spiral blade. An end plate is arranged at the lower end of the first rotating shaft, a sealing piece is arranged in a discharging opening in the lower portion of the third shell, and breathable cloth is arranged between the second shell and the third shell. By using the production device for the simulated breast milk creep feed, the materials can be fully and uniformly mixed easily, the processing and the product quality of simulated breast milk creep feed products are facilitated, the finished products are smoothly discharged, and material residues can be avoided.

The present invention discloses an anti-condensation device for loading crane pipes, comprising an inner tube, a sleeve, a lifting member and an air source, wherein the inner tube is connected to the crane pipe, the sleeve and the lifting member are sleeved on the inner tube, the lifting member is located inside the sleeve, the lifting member is slidably connected to the sleeve and the inner tube respectively, a liquid inlet and outlet are provided on the inner tube, the liquid inlet and outlet are located inside the sleeve and below the lifting member, the air source and the crane pipe are detachably connected via a quick connector, the air source is arranged at one end of the crane pipe away from the inner tube, a ventilation interface is provided at the top of the sleeve, and the sleeve is connected to the air source via the ventilation interface. The use of the anti-condensation device of the present invention avoids leakage of liquid medium in the crane pipe and damage to joint components, and at the same time avoids condensation of the medium in the crane pipe to cause pressure build-up, thereby improving the safety of chemical product transportation; when in use, the anti-condensation device is directly connected to the crane pipe, without changing the original shape of the crane pipe, and without adding a heating device to the crane pipe, and is convenient and quick to use.