243 results about "Closed chamber" patented technology

The present invention discloses a pneumatically controlled, high-pressure, balanced sewage, two-position, three-way reversing ball valve structure, comprising: a valve seat, a valve ball, and a valve ball centering sleeve installed within a valve body; the valve seat having three openings: a left opening and a right opening, located at the left and right ends of the valve seat, respectively, and a center opening located in the center of the valve seat; a port A located on the left side of the valve body, communicating with the center opening of the valve seat; a port B located on the right side of the valve body, communicating with the right opening of the valve seat; a high-pressure water wellhead connector connected to the left end of the valve body, the port of the high-pressure water wellhead connector being port P, forming a chamber C within the high-pressure water wellhead connector; a feedback piston sealing sleeve forming a closed chamber D at the right end of the feedback piston; chambers C and D being connected via a balancing pipe. The valve valve has reliable sealing performance, requires relatively low water cleanliness, and can be used in sewage reversing valves; it also features fast response speed and high flow rate.

The invention relates to the technical field of tempered film production, in particular to an oil coating all-in-one machine for a flat tempered film, which comprises a shell, a transmission mesh belt, a cleaning assembly, a telescopic driving part, a sealing cover and a plugging film, a transmission mesh belt is arranged on the machine shell; a cleaning assembly is arranged on the machine shell. A plurality of telescopic driving pieces are arranged on the machine shell; the telescopic ends of all the telescopic driving pieces are jointly and fixedly connected with a sealing cover. The inner wall of the sealing cover is an inclined surface; a blocking film is arranged at the bottom of the sealing cover. The closed chamber is formed by combining the closed cover, the blocking film and the tempered film, oil mist sprayed out at a high speed is prevented from diffusing all around after making contact with the tempered film and adhering to the surface of other sprayed or unsprayed tempered film, uneven adhesion of the oil mist on the surface of the tempered film is avoided, meanwhile, oil liquid is prevented from adhering to the back face of the tempered film, and the service life of the tempered film is prolonged. The viscosity reduction of the adhesive layer on the back of the tempered film is avoided and the quality of the tempered film is guaranteed.

The utility model provides a building water supply and drainage pipeline leakproofness detection device, which belongs to the technical field of pipeline installation, and comprises a sliding assembly, two groups of sealing assemblies, a detection assembly and an inflation device, the upper end of the sliding assembly is used for being connected with hoisting equipment, and the lower end of the sliding assembly is provided with a slideway; the two sealing assemblies are suitable for blocking openings in the two ends of a to-be-detected pipeline. The upper end of the detection assembly is slidably connected with the slideway, the lower end of the detection assembly is suitable for clinging to the outer wall of the pipeline and forming a closed cavity with the outer wall of the pipeline, the gas pressure in the closed cavity is detected to detect the leakage area of the pipeline, and the gas filling device is provided with a gas filling pipe which penetrates through at least one sealing assembly and is suitable for filling gas into the pipeline. The building water supply and drainage pipeline airtightness detection device provided by the utility model has the technical effects that the airtightness of pipelines at different positions can be detected, pipelines with different lengths can be detected, pipeline leakage areas can be detected, and the detection efficiency is high.

The invention provides a vertical liquid damper which comprises a closed container, buffer liquid, a horizontal partition part and a horizontal energy dissipation part, a base connected with an external structure to be subjected to vibration reduction is arranged at the bottom of the closed container, and the interior of the closed container is divided into at least two independent closed cavities by the horizontal partition part; each closed cavity is filled with the buffer liquid flowing in a collision mode, the horizontal energy dissipation pieces are arranged in the closed cavities, each horizontal energy dissipation piece comprises a middle hollow channel and a peripheral baffle, and the peripheral baffle is provided with a pore structure for the buffer liquid to pass through in the vertical movement process. The device has the advantages of effective dissipation of vertical vibration energy, simple structure and the like.

The invention discloses an electrically-operated drop-out fuse and a control method, and relates to the field of circuit devices for power supply or distribution, the electrically-operated drop-out fuse comprises a protective insulator, an intelligent control module, a drop-out assembly, a driving mechanism and a transmission mechanism, the protective insulator is of a longitudinally-penetrating groove structure, the top of the protective insulator is provided with a closed upper cover, and the intelligent control module is connected with the drop-out assembly; two sides of the protective insulator extend downwards to form side walls, the side walls and the insulator form a shield used for shielding the upper static contact and the upper moving contact, a closed cavity is arranged at the rear part of the protective insulator, and a driving mechanism is arranged in the cavity; the intelligent control module is electrically connected with the driving mechanism, the driving mechanism is connected with the transmission mechanism, and the intelligent control module controls the driving mechanism to drive the falling assembly through the transmission mechanism to realize opening or closing; according to the fuse and the control method provided by the invention, remote intelligent switch-on and switch-off can be realized, the operation is safe and reliable, the structure is compact, and the protection performance is excellent.

The invention relates to the technical field of precision assembly, in particular to a novel pneumatic flexible leveling unit which comprises a fixed seat, an elastic membrane, an elastic piece, a positioning block and a floating block. The fixed seat is mounted on the moving mechanism, a groove is formed in the bottom of the fixed seat, and the elastic membrane covers the groove to form a closed cavity; the positioning block is mounted at the bottom of the fixing seat, the floating block is nested in the positioning block, and the bottom end of the floating block extends out of the positioning block to be connected with the suction mechanism. The floating block is connected with the positioning block through an elastic piece, the elastic piece can stretch out and draw back in the vertical direction, and the top end of the floating block is attached to the elastic membrane all the time. The air pressure of the closed cavity is adjusted to be first air pressure, after the suction mechanism abuts against the workpiece, the abutting position of the suction mechanism is supported by the workpiece, the floating block is driven to continuously adjust the posture of the floating block, the inclination angle difference between the suction mechanism and the workpiece is automatically compensated under the double-elastic-force action of deformation of the elastic membrane and stretching of the elastic piece in the process, and finally leveling is achieved. According to the invention, the parallelism is automatically adjusted, the precision is high, and the adaptability is strong.

The utility model discloses a furnace tube which comprises an outer furnace tube, an inner furnace tube, an upper furnace cover and a lower furnace door, the inner furnace tube is mounted in the outer furnace tube; the upper end and the lower end of the inner furnace tube are open, the upper end opening is provided with a connecting piece for hoisting connection, and the lower end opening is provided with a supporting table top for mounting a supporting base, so that the inner furnace tube can be downwards hoisted into the outer furnace tube from the top of the outer furnace tube to be mounted or upwards inserted into the outer furnace tube from the bottom of the outer furnace tube to be mounted. The inner furnace tube provided by the utility model adopts a penetrating type design, can be hoisted from the top and can also be supported from the bottom to be inserted upwards for installation, so that the installation modes of the inner furnace tube are diversified. And the carrier in the furnace tube is placed on the rotatable boat support base, and the position and the angle of the carrier can be adjusted in the furnace, so that a gas field and a thermal field in the closed chamber are uniform, and the overall process yield is improved.

The invention discloses a production device for preparing carbon nanotubes, the production device comprises a closed chamber, a chain conveyor and a heat preservation chamber, the closed chamber comprises an inlet end, an outlet end and a middle pipeline, the middle pipeline comprises an upper-layer pipeline, and the upper-layer pipeline comprises an inlet section, a reaction furnace and an outlet section. The main production steps for preparing the carbon nanotube are as follows: 1) carbon source gas enters a reaction furnace and becomes high-temperature gas under the action of a heating device; (2) the catalyst falls into a material box located at the inlet end through a feeding device; (3) the material box enters the reaction furnace through the inlet section; 4) stacking carbon nanotubes generated by the carbon source gas under the action of a catalyst in a material box; 5) the material box in the reaction furnace enters the outlet end through the outlet section, 6) the opening of the material box is changed from upward to downward at the position of the chain wheel, and meanwhile, the carbon nano tube in the material box falls into the storage bin through the discharging device.The device has the main advantages of being simple in structure, high in efficiency, low in energy consumption, safe, reliable and easy to maintain.

The invention discloses carbon tank escape emission evaporation closed chamber circulation sampling equipment and a sampling method, and relates to the technical field of motor vehicle emission source test equipment. Comprising a carbon tank escaping, discharging and evaporating closed chamber, a pipeline assembly and a circulating pump, an SV1 electromagnetic valve and an SV2 electromagnetic valve are arranged between the carbon tank escaping, discharging and evaporating closed chamber and a carbon tank, and the circulating pump is arranged between the SV1 electromagnetic valve and the carbon tank escaping, discharging and evaporating closed chamber. The circulation of hydrocarbon between the carbon tank and the carbon tank escape discharge evaporation closed chamber can be controlled by controlling the SV1 solenoid valve, the concentration of the hydrocarbon is detected, and the circulation of residual hydrocarbon between the pipeline and the carbon tank escape discharge evaporation closed chamber can be controlled by controlling the SV2 solenoid valve and closing the SV1 solenoid valve. The residual gas in the pipeline is prevented from influencing the detection stability of the carbon tank escaping and discharging evaporation closed chamber, so that the detected numerical value is stable, and the test accuracy is ensured.

The invention relates to the technical field of oxidation treatment of powder metallurgy products, and discloses a surface oxidation treatment device for high-airtightness powder metallurgy products, which comprises a pretreatment mechanism, one end of the pretreatment mechanism is fixedly connected with a steam treatment furnace, and a conveying mechanism is mounted between the pretreatment mechanism and the steam treatment furnace; a powder metallurgy product assembly is conveyed on the conveying mechanism; the pretreatment mechanism comprises a first machine body, an outer shell, a ventilation shell, a vacuum assembly and a first steam assembly, the outer shell is connected to the upper side of the first machine body, and the ventilation shell is fixedly connected to the inner side of the outer shell. According to the active pretreatment method, the closed cavity is vacuumized firstly to form negative pressure, then low-temperature steam is injected, and the steam is forcibly and rapidly permeated into all the deep holes of the powder metallurgy product through the pressure difference. The problem of non-uniform permeation caused by obstruction of residual air in pores in traditional direct steam treatment is fundamentally solved.

The present application relates to a kind of fuel power device, the center wheel is connected by output shaft in the center through hole of shell, the circumference of center wheel is equipped with several power blocks;Several rotors are equipped on the outer periphery of center wheel, each rotor is matched with the independent space of shell by bearing seat, each rotor is linked with output shaft by transmission mechanism I;Several oblique tooth grooves are equipped on the rotor, power block passes from tooth groove when rotor is tangent with center wheel and runs, the shell corresponding to each rotor, power block and air inlet forms explosion chamber when power block passes from tooth groove, spark plug is provided at air inlet, so that explosion chamber is filled with a certain proportion of air and fuel gas and produces blasting, and power block is pushed;Several exhaust ports are provided on the surface of shell, and exhaust port is staggered with explosion chamber.This power device forms closed chamber by carousel transmission structure, and makes fuel mixture gas blast production power, so as to realize the production of power source.

This invention discloses a method for pre-fabricating porosity defects in nickel-based alloy welds, comprising: S1.1, applying a bottom weld bead structure to the surface of a metal test plate, the bottom weld bead structure comprising N consecutive adjacent weld beads, where N is an integer greater than 1; controlling the welding position of adjacent weld beads to form a gap between each pair of adjacent weld beads; S1.2, applying grease into each of the gaps as a gas source to induce porosity; S1.3, applying a second weld bead structure on the bottom weld bead structure, using the second weld bead structure to completely cover each of the gaps, encapsulating the grease, and forming one or more first closed chambers containing grease. This invention organically combines the porosity generation law of nickel-based welds with welding process control, successfully pre-fabricating porosity defects, and laying the foundation for the study of the porosity generation mechanism of nickel-based welds and subsequent process improvement.

The invention discloses a laser welding device and method based on a transparent plastic material, and the device comprises a pressing jig, a multi-directional moving assembly, a laser welding head, a quartz pressing plate, a feeding and discharging module and a jig carrier plate which are arranged on a workbench, and the jig carrier plate is provided with a heatable welding jig; the welding jig is provided with an elastic cavity with an opening in the upper portion, a plastic product to be welded is placed in the elastic cavity, and the quartz pressing plate is used for pressing the elastic cavity to form a closed cavity and abutting against the plastic product; a monitoring unit is further arranged in the pressing jig and used for detecting the downward pressing force of the quartz pressing plate and the welding collapse value in the welding process. The laser welding device based on the transparent plastic material can effectively solve the problems of insufficient light absorption, insufficient welding strength and long welding time of transparent plastic in the welding process.

The utility model relates to the technical field of pump equipment, in particular to a horizontal direct-current variable-frequency high-pressure cavity vortex pump. The horizontal direct-current variable-frequency high-pressure cavity scroll pump is used for conveying an incompressible liquid working medium and comprises a static scroll plate and a dynamic scroll plate which are connected in a meshed mode, and the dynamic scroll plate can rotate and translate relative to the static scroll plate. An open suction cavity is defined between the movable scroll plate and the static scroll plate to suck a liquid working medium, and the suction cavity can be converted into a closed cavity and carries the liquid working medium to be pushed towards the central area of the static scroll plate so that the liquid working medium can be discharged through a first discharging opening in the middle of the static scroll plate. The disc body of the static scroll disc is provided with a first sinking groove communicated with the first discharge port, and the suction cavity is communicated with the first discharge port through the first sinking groove after being converted into the closed cavity, so that liquid is discharged in time, and the situation that the dynamic scroll disc and the static scroll disc are damaged due to the fact that an incompressible liquid working medium cannot be discharged in time is avoided; and safe and reliable conveying of the incompressible liquid working medium is achieved.

The invention discloses an anti-corrosion device for a directly-buried steam pipeline, and relates to the technical field of pipeline corrosion prevention. According to the scheme, the device comprises a connecting mechanism used for being fixed to the outer wall of the steam directly-buried pipeline in a hooping mode; the closed box body is arranged on the connecting mechanism, the closed box body comprises an underground closed pipe located under the ground and an overground maintenance box body located on the ground, and the underground closed pipe is in sealing fit with the outer wall of the steam directly-buried pipeline through a sealing ring to form a closed cavity; the sacrificial anode is arranged in the overground maintenance box body; and the electrode assembly is arranged in the closed cavity and used for being electrically connected with the outer wall of the steam directly-buried pipeline and the sacrificial anode to form a cathode protection loop. By arranging the connecting mechanism composed of the pipe clamping piece with the bottom of the arc-shaped structure and the frame-shaped connecting plate, during installation, only limited excavation needs to be conducted on the two sides of the pipeline, and the earthwork excavation volume and the influence of construction on pipeline operation are greatly reduced.

The utility model relates to the technical field of isolating valves, particularly discloses a closed push-pull type isolating valve, and aims to solve the problems that an existing closed push-pull type isolating valve is generally not suitable for a high-oil-stain and high-fluff-amount environment of a setting machine discharge flue and cannot drive a plurality of bolts to rotate at the same time, the closed push-pull type isolating valve comprises an inlet flange and an outlet flange; the handle sealing chamber is fixedly arranged on the inlet flange and the outlet flange, a supporting block is connected to the outlet flange in a sliding mode, a motor is fixedly connected to the supporting block, a plurality of fixing nuts are fixedly connected to the outlet flange, and a reinforcing strip is fixedly connected to the inlet flange; the valve plate is inserted into the handle closed chamber, so that connection between the outlet flange and the inlet flange can be rapidly cut off, the fixing nut is in threaded connection with the puller bolt to drive the puller bolt to move, the puller bolt drives the pressing ring to move, and therefore the pressing ring can abut against the valve plate to the sealing ring, the sealing effect of the inlet flange is enhanced, and the service life of the valve plate is prolonged. And the valve plate is prevented from deforming.

A kind of inside tube spraying device of noise reducer, including base, vertical plate is welded on base, a pair of fixed ring is welded on the upper end of vertical plate, outer tube cover is welded in fixed ring, the end of outer tube cover is shaped with convex edge, end disc is installed on convex edge by screw, rotating tube is coaxially and rotatably arranged on end disc, a pair of communication pipe is communicated on rotating tube, rotating plate is fixed on the inner side end of rotating tube, outer tube and inner tube are fixed on the other end of rotating plate, a plurality of spray heads are fixed on the inner wall of outer tube and the outer wall of inner tube.The utility model discloses when spraying, a more closed chamber is formed by outer tube cover and the sealing disc connected and fixed thereon, so that, paint can be avoided to splash in the process of spraying, to avoid causing pollution to environment.

The present invention discloses a device for coating a metal coating on the surface of powder by the carbonyl process, belonging to the technical field of devices for preparing coating layers by vapor deposition. The device for coating a metal coating on the surface of powder by the carbonyl process of the present invention includes a closed chamber, a carbonyl metal gas inlet chamber located at its center, a carrier gas tank, a carbonyl metal gas tank, a carrier gas and carbonyl metal gas recovery device respectively connected to the two tanks, and a cooling liquid tank. The device and method of the present invention solve the problems of effective heating of powder and recycling of raw materials in the process of coating nickel and iron coatings on the surface of powder by the carbonyl process. It not only ensures the high purity of the coating, but also has energy-saving process, high raw material utilization rate, significantly reduces the cost of the coating treatment process, and has batch processing capacity.

The utility model discloses a water quality sampler convenient for sampling, which comprises an inner cylinder and an outer cylinder which are sleeved inside and outside and rotationally connected, the inner cylinder is provided with a closed chamber, partition plates are arranged in the closed chamber from top to bottom at intervals, the partition plates divide the closed chamber into a plurality of water storage cavities, and a water inlet is arranged on the side wall of each water storage cavity; water inlet grooves matched with the water inlets are formed in the outer cylinder and are communicated with the outside; the outer cylinder and the inner cylinder rotate relatively so that the water inlet groove openings can be communicated with the corresponding water inlets, the water inlets can be communicated with the outside, or the water inlet groove openings and the corresponding water inlets can be staggered so that the water inlets can be closed. During water taking, the water taking device goes deep into a preset depth of a water area, the inner cylinder and the outer cylinder are relatively rotated, water bodies with different depths can be guided into the water storage cavities, then the inner cylinder or the outer cylinder is reversely rotated, the water inlets are closed, and then the water taking device is taken out of the water area, so that the water quality of the target depth of the water area can be sampled; the sampling accuracy of target water quality is improved.

The application discloses a supercooling box suitable for a condenser and a horizontal condenser, wherein the cover plate of the supercooling box is horizontally arranged at the top, the arc-shaped plate is extended upwards from the bottom of the arc-shaped plate and is buckled with the upper end cover plate, the outlet is arranged at the middle of the bottom, the notches are arranged at the two ends to form the liquid inlet, the end plate, the cover plate and the arc-shaped plate form a closed chamber, the baffles are distributed and arranged in the closed chamber, the liquid flow forms a serpentine or zigzag flow channel along the baffles in the closed chamber, the two ends of the supercooling box are arranged at a distance from the tube plate at the two ends of the cylinder, and the arc-shaped plate at the bottom of the supercooling box is arranged at a distance from the cylinder and is consistent with the arc of the cylinder. The defects that the existing condenser is easy to accumulate refrigerant and the refrigerant is gathered at the water inlet side are improved.

The invention discloses a rotary explosion-proof pipe cutter which comprises a base and a turntable, the base and the turntable are provided with opposite openings and are sleeved together to form a relatively closed cavity, the base and the turntable are respectively provided with a through hole for a steel pipe to penetrate, the base is provided with a pipeline fixing mechanism, and the outer side wall of the turntable is provided with a stress application rod extending outwards. A tool rest is movably sleeved with a penetrating hole in the rotary disc, a roller blade is installed at the opening end of the inner side of the tool rest, a fastening frame covering the tool rest is further fixed to the outer side wall of the rotary disc, and after the middle threaded section of the push broach screw is in threaded connection with a threaded hole in the fastening frame, the head end of the inner side of the push broach screw penetrates through the vertical part of the tool rest and then is connected with a hexagon nut. The extrusion cutting technology is adopted, no spark is generated in the cutting process, heat production is low, and the risks of fire disasters and explosions caused when the device is used in combustible matter or combustible gas environments are prevented; the blade is located in a closed environment, the risk of mechanical injury to people is avoided, and even if the blade is broken under the extreme working condition, the blade cannot fly to hurt people.

The invention relates to the technical field of water pressure tests, in particular to a grouting detection water pressure test auxiliary device which comprises a tank body of a hollow structure, a water inlet hole and a water outlet hole which are communicated with the inner side and the outer side of the tank body are formed in the bottom of the side wall of the tank body, and a piston slides in the middle in the tank body in the vertical direction and is in sealing fit with the tank body. A closed cavity for storing gas is formed above the piston in the tank body; a water stop plug used for covering and blocking the water inlet hole is arranged below the piston, the water stop plug is movably connected with the tank body, and an opening in one end, in the tank body, of the water inlet hole is located on the movement track of the water stop plug; a linkage assembly is arranged between the piston and the water stop plug, and when the piston slides in the tank body, the water stop plug is driven by the linkage assembly to move to cover or open the water inlet hole. The pressure stabilizing tank aims to solve the problem that in the prior art, when a pressure stabilizing tank conducts water pressing tests on some low-permeability stratums, most injected water is discharged through a pressure relief valve, and water resources are wasted to a certain degree.

The invention discloses a reinforcing steel bar connecting sleeve, a connecting structure and a construction method, and relates to the technical field of building reinforcing steel bar connection.The reinforcing steel bar connecting sleeve comprises a sleeve body and reinforcing steel bars to be connected, and the sleeve body comprises a sleeve body and a sealing gasket located at the end opening of the sleeve body; a closed cavity is formed in the barrel through the sealing gasket, and a cementing material is arranged in the closed cavity of the barrel; the connecting reinforcing steel bars penetrate through the sealing gasket and penetrate into the cylinder body, the connecting reinforcing steel bars are wrapped by the cementing material, and the cylinder body is connected with the reinforcing steel bars. The invention has the advantages that the cementing material is injected into the sleeve in advance, only the reinforcing steel bar is inserted during installation, the installation is convenient, and the connection is reliable; due to the structure of the sealing gasket, little cementing material leaks out, the connection of the sleeve is visually checked due to the arrangement of the material bolt hole, and compared with an existing grouting sleeve, the connection quality is better guaranteed; the sleeve can be applied to a cast-in-place environment and a prefabrication environment, and the other end of the sleeve is provided with ports in different forms, so that the sleeve can be suitable for various occasions and is convenient to install and efficient in connection.

The invention relates to the technical field of shield pumps, and discloses a gap self-compensation axial force balance shield pump based on heterogeneous material thermal matching, which comprises a pump body, a pump cover assembly and a motor shell assembly which are enclosed to form a closed cavity for mounting a rotor part; the rotor component comprises an impeller, the impeller is arranged in an inner cavity of the pump body, a rear cover plate of the impeller is provided with an annular rear opening ring extending in the axial direction, the motor shell assembly comprises a motor shell, the end, facing the pump body, of the motor shell is provided with an annular opening ring, the annular opening ring and the annular rear opening ring are oppositely arranged in the radial direction, and a rear opening ring radial gap is formed between the annular opening ring and the annular rear opening ring. The impeller is made of a first polymer-based composite material, the motor shell is made of a second polymer-based composite material, and the thermal expansion coefficient of the first polymer-based composite material is larger than that of the second polymer-based composite material. According to the invention, the situation that the main thrust bearing liquid film bears too high load at high temperature can be avoided, and a dynamic and self-adaptive axial force compensation system is formed.

The invention discloses a pole-mounted vacuum circuit breaker, and belongs to the technical field of circuit breakers, the pole-mounted vacuum circuit breaker comprises a vacuum arc-extinguishing device mounted above a mechanism box, the vacuum arc-extinguishing device comprises a cylindrical arc-extinguishing chamber and a switching base, and the interior of the cylindrical arc-extinguishing chamber is vacuum; an interlayer sleeve is arranged on the outer side wall of the cylindrical arc extinguish chamber in a sealed mode, the bottom of the interlayer sleeve is fixedly arranged on the upper surface of the switching base, and a movable combination end cover piece is installed below the cylindrical arc extinguish chamber. According to the invention, the closed chamber is arranged outside the inner metal corrugated pipe, and arc extinguishing gas is supplemented in the chamber, so that when the inner metal corrugated pipe is damaged to cause vacuum leakage, the arc extinguishing gas in the interlayer sleeve is sucked into the arc extinguishing chamber, pushes the piston ring to move downwards, and drives the magnetomotive joint control ring to synchronously act to drive the arc extinguishing reinforcing ring to move downwards; leaked arc extinguishing gas enters the arc extinguishing chamber, and the shielding effect of the reinforcing ring is combined, so that arc breakdown can still be inhibited in a closed environment after vacuum failure, emergency buffer time is provided for a power grid, and planned maintenance is supported.

The utility model relates to the technical field of sealing equipment, and aims to provide a sliding sealing door for totally sealing negative-pressure dust removal equipment of a car dumper, which comprises a sliding rail and a steel rail which are arranged on the upper side and the lower side of a doorway of a car inlet end and a car outlet end of a sealed chamber, and a movable door is arranged between the sliding rail and the steel rail. The middle of the inner side face of the movable door is connected with a support through a shifting fork assembly arranged on the movable door, the support is located above the sliding rail, the top of the shifting fork assembly is connected with an oil cylinder, and the tail end of the oil cylinder is installed on the sliding rail and the outer wall of the closed chamber through a base. According to the utility model, the shifting fork assembly is driven by the hydraulic cylinder and is matched with a dynamic matching structure of the pin shaft and the strip-shaped hole, so that the opening and closing actions of the movable door are ensured to be completely synchronous with the car leaning and pressing operations of the car dumper, and the system coordination is improved; and a three-dimensional constraint system is formed by combining limiting and guiding of the backstop and the connecting rod assembly, so that the door body is effectively prevented from derailing, and the fault occurrence rate is reduced.

A downhole solids separator having: a plurality of solids separation modules, a production tube disposed therein, one or more limited entry ports in the production tube, placed in each of the modules, an intake port in the lower half of each module opening into a wellbore annulus, the intake port below the limited entry port of the module, a closed chamber for collecting solids, isolated from the well bore, the closed chamber below modules, a solids conveying conduit from at least one module, opening into the closed chamber, an opening restricted to less than the size of the production tube in the conduit near the bottom of the module, an opening in the production tube in the closed chamber, where the production tube opening and conduit opening are configured to effect a drop fluid velocity into production tube to a level insufficient to carry solids into the production tube.

The utility model discloses a quick-changing device for a guider of an electric spark small hole machine, which comprises a guide sleeve seat, a closed cavity is arranged in the guide sleeve seat, the upper end of the closed cavity is open, the bottom of the guide sleeve seat is coaxially provided with an inserting hole along the vertical direction, and the lower end of the closed cavity is communicated with the upper end of the inserting hole; the guide device further comprises a guide positioning piece and a guide device sleeve. The guide positioning piece is inserted into the closed cavity from top to bottom, the upper end of the guide positioning piece is hermetically assembled with the open end of the closed cavity, and the lower end of the guide positioning piece is inserted into the insertion hole for coaxial positioning; rapid positioning of the guider sleeve can be achieved through matching of the alignment groove and the guider sleeve, and meanwhile rapid fixing operation in the positioning process can be achieved through matching of the piston, the limiter and the guider sleeve. According to the utility model, through the cooperation of the piston and the plurality of bosses, when the guider sleeve is disassembled, the guider sleeve can be loosened and pushed away from the guide positioning piece.

The utility model relates to the technical field of pipe gallery protection equipment, in particular to pipe gallery electric power fireproof protection equipment which comprises a power cable, a fan and a heat exchange assembly, a lower bin shell is arranged at the bottom of the power cable, an upper bin shell is arranged above the lower bin shell, and a lower sealing edge and an upper sealing edge are arranged on the two sides of the lower bin shell and the two sides of the upper bin shell respectively. A heat exchange assembly is arranged on one side of the lower bin shell and one side of the upper bin shell, and a fan is arranged on one side of the heat exchange assembly. The lower bin shell, the upper bin shell, the lower sealing edge and the upper sealing edge are arranged on the outer side of the power cable to form the closed cavity, the carbon dioxide gas is filled to isolate oxygen, the power cable is prevented from catching fire due to high temperature or other factors, meanwhile, the fan is arranged to drive the carbon dioxide gas to circularly flow in the closed cavity and the heat exchange assembly, and the heat exchange efficiency is improved. The heat generated by the power cable is taken away, the carbon dioxide gas is cooled to guarantee the heat dissipation capability, and the power cable is further prevented from being on fire at high temperature.

This application provides a device and method for measuring the amount of electrolyte adsorbed on an electrode. The device includes a housing, a storage tank, a weighing component, a driving component, and a data acquisition controller. The housing has a closed chamber, in which the storage tank, weighing component, and driving component are all located. The weighing component includes at least one weighing device, each weighing device including a suspension rod, a suspension damping device, and a weight sensor. The suspension end of the suspension rod is located above the storage tank, and the suspension rod is connected to the weight sensor through the suspension damping device. The driving component is used to drive the storage tank or the weighing component to move up and down. The data acquisition controller is connected to the weight sensor and is used to collect and process the data measured by the weight sensor. This application can measure the mass of electrolyte adsorbed on the electrode in real time and is simple to operate.