52results about How to "Change flow direction" patented technology

The invention provides a K-band broadband dual circularly polarized antenna applied to the satellite internet, and belongs to the field of circularly polarized antennae, the K-band broadband dual circularly polarized antenna comprises a radiation unit, a first dielectric layer, a metal ground layer, a bonding layer, a second dielectric layer and a feed network which are stacked from top to bottom, the radiation unit comprises two first radiation patches and two second radiation patches, the first radiation patch is provided with two long rectangular grooves which are vertically intersected, the second radiation patch is provided with two short rectangular grooves which are vertically not intersected, the first radiation patch and the second radiation patch are respectively connected to the metal ground layer through metal columns, and the metal ground layer is provided with a first coupling gap and a second coupling gap. A first rectangular groove, a second rectangular groove, a third rectangular groove and a fourth rectangular groove are formed in the metal ground layer, and the feeder network comprises a first microstrip feeder and a second microstrip feeder; the antenna structure is low in profile, wide impedance bandwidth can be achieved, and the two feed ports can work in the same frequency range.

The invention relates to the technical field of spraying devices, and discloses a spray head assembly and a bathroom device.The spray head assembly comprises a liquid inlet part and is provided with a liquid inlet cavity, the cavity wall of the liquid inlet cavity comprises an inner cavity wall and an outer cavity wall, the outer cavity wall is arranged on the outer side of the inner cavity wall in a surrounding mode, and a gap is formed between the outer cavity wall and the inner cavity wall to form the liquid inlet cavity; the inner cavity wall and / or the outer cavity wall are / is provided with at least one fluctuating section, and the fluctuating section extends in the direction from the liquid inlet end to the liquid outlet end of the liquid inlet cavity, so that at least part of the inner cavity of the liquid inlet cavity is gradually shrunk in the direction from the liquid inlet end to the liquid outlet end. The turbulent flow effect of mixed liquid sprayed out of the liquid outlet end can be enhanced, the contact surface area of the mixed liquid and air is increased, and the foaming effect is improved.

The utility model provides a flow guide device applied to an exhaust channel of a gas turbine. The flow guide device mainly comprises a frame, a pore plate, a flow guide inclined sheet 01, a flow guide inclined sheet 02, a flow guide inclined sheet 03, a flow guide shoulder sheet, rivets and glass silk floss. The exhaust channel is characterized in that a flow guide device is mounted in the exhaust channel of the gas turbine, the flow direction of airflow can be changed, airflow resistance loss is reduced, the circulation area is increased, the air circulation efficiency is improved, the internal environment temperature of a cabin of the gas turbine is reduced, and meanwhile the sound insulation requirement can be met. And effective use guarantee can be provided for users, and the popularization value is high.

The present application provides a kind of inner slag discharging device and its slag discharging method, it includes high wear-resistant obturator, drill bit drill rod device, venturi water and drill slag dry-wet separator, the drill bit drill rod device is located in high wear-resistant obturator, drill slag dry-wet separator is connected with drill bit drill rod device by venturi water.The flow direction of drill slag can be changed by changing the running direction of slag discharging medium, so as to reduce the scouring, soaking and friction of slag discharging medium and drill slag on the hole wall, which is beneficial to the formation of drilling hole;It can achieve the purpose of point coring by achieving "falling and discharging simultaneously";Drilling cuttings can be well collected, which is beneficial to the civilized production of construction site and prevents dirtiness and disorder;If inert gas is used for slag discharging during construction, it can also achieve the purpose of inhibiting spontaneous combustion of coal seam.Through the above technical scheme analysis, the device is theoretically feasible and the operation is reliable, which provides good drilling quality for casing, greatly improves the success rate of drilling and casing and the extraction effect.

The invention relates to a method and a system for integrally removing greenhouse gas and particulate matters in ship tail gas based on an alkaline adsorption technology. The method comprises the following steps: firstly, cooling the ship tail gas until water vapor is in a supersaturated state; spraying and mixing with an alkaline solution, and removing dust and particulate matters from the obtained gas phase; mixing the obtained liquid phase with an alkaline reagent, and filtering to obtain a solution in which the greenhouse gas is dissolved; the system comprises a heat exchanger, a decarbonization tower, dust removal equipment and a precipitation cabinet, the heat exchanger is connected with a ship tail gas exhaust pipe and used for cooling ship tail gas till steam is in a supersaturated state. The decarburization tower is used for spraying and mixing the cooled ship tail gas and an alkaline solution to obtain a gas phase and a liquid phase; the dust removal equipment is communicated with a gas phase outlet of the decarbonization tower and is used for removing particulate matters in a gas phase; and the precipitation cabinet is communicated with a liquid phase outlet of the decarbonization tower. Compared with the prior art, greenhouse gas and particulate matters, especially ultrafine particulate matters, in the tail gas of the marine diesel engine can be removed at the same time.

The five-way electromagnetic water valve comprises a valve body and an actuator arranged on the valve body, the valve body comprises a valve deck, a valve element structure and a valve shell structure, the valve element structure is movably arranged in the valve shell structure, the valve deck is arranged on the valve shell structure, and the actuator can drive the valve element structure to rotate in the valve shell structure. The five-way electromagnetic water valve has the advantages that the five-way electromagnetic water valve is simple in structure, high in integration and diversified in function mode, the cooling liquid flows to other parts in the heat management system, and heat exchange is realized.

The present invention discloses an assembled structure of a blast furnace iron outlet ditch and an assembly method thereof, belonging to the technical field of blast furnace iron outlet ditch, comprising a base and a transfer box arranged on the top of the base, the top of the transfer box is open, an iron outlet ditch 1 is arranged above the transfer box, an iron outlet ditch 2 is arranged on one side of the transfer box, and a transfer port is opened on one side of the transfer box; a rotating support mechanism is used to drive the iron outlet ditch 1 to rotate above the transfer box; a moving docking mechanism drives the iron outlet ditch 2 to move horizontally and dock with the transfer port on the transfer box; a limiting mechanism is used to fix the position of the iron outlet ditch 2; the rotating support mechanism includes a support shaft fixed in the transfer box; the present invention facilitates the installation of two iron outlet ditches, is easy to install, simple to operate and has a firm structure, is easy to adjust the angle between the two iron outlet ditches, thereby changing the flow direction of molten iron, and is convenient for transporting molten iron according to actual terrain requirements, thereby improving transportation convenience.

The invention discloses a high-voltage switch shell and a longitudinal seam automatic welding device thereof, and relates to the technical field of high-voltage switch shell welding, the high-voltage switch shell comprises a welding machine body, a double-gas mixing mechanism and a detection protection mechanism, the bottom of the inner wall of the welding machine body is slidably connected with a control seat, and the top of the control seat is provided with a switch shell body; the detection protection mechanism is located on the front side of the double-gas mixing mechanism, and through the arrangement of the double-gas mixing mechanism, when airflow passes through the rotating ring frame, flapping force can be generated on the passing airflow, so that the flowing direction of the shielding gas airflow is changed, the mixing speed of double shielding gases in the gas outlet channel is increased, the shielding gases are more uniform, and the shielding effect is better. In the welding process, the uniform shielding gas can effectively prevent welding seams from being polluted by impurities such as oxygen and nitrogen in air, so that the welding quality is improved, the optimized airflow distribution enables the welding process to be more stable, and the situation of welding interruption or quality reduction caused by uneven airflow is reduced.

The utility model provides an energy gathering ring and a pot support. The energy gathering ring comprises a body and turbulent flow strips. The body is of an annular structure and used for being arranged on the peripheral side of a fire cover of the combustor in a sleeving mode. The turbulent flow strip is arranged on the upper end face of the body and protrudes upwards from the upper end face of the body, the turbulent flow strip is in a long strip shape, the length direction of the turbulent flow strip intersects with the first direction on the horizontal plane, and the first direction is the direction passing through the turbulent flow strip in the radial direction of the energy gathering ring. The turbulent flow strips can change the flowing direction of smoke, increase disturbance of airflow and prolong the hovering time of the smoke above the body of the energy gathering ring, so that the smoke can have more time to be combusted, sufficient combustion of the smoke is guaranteed, and emission of carbon monoxide is reduced.

The utility model relates to a kind of water pump with machine seal sand blocking structure, to solve the problem that machine seal is easy to fail in prior art, the technical scheme used includes motor, pump body, motor base connected motor and pump body, the rotation axis on motor passes through motor base and forms connection with the impeller in pump body, machine seal is set between rotation axis and motor base, the inner cavity of machine seal and motor base cooperation, it is characterized in that the outside cover of machine seal is equipped with machine seal sand blocking structure, and machine seal sand blocking structure has deposition channel.Effect: the outside cover of machine seal is equipped with machine seal sand blocking structure, and machine seal sand blocking structure has deposition channel, machine seal sand blocking structure is used to prevent external silt from entering the gap between machine seal and rotation axis, deposition channel is used to deposit silt entering machine seal sand blocking structure and discharge, it is beneficial to keep the liquid environment of machine seal working operation relatively clean and stable, it is beneficial to ensure that water pump is normally operated, and it is beneficial to reduce the probability of repair and replacement, it is beneficial to reduce water pump operating cost.

The present application relates to a semiconductor bulk gas particle detection device and method, belonging to the field of fluid particle detection technology, the semiconductor bulk gas particle detection device includes a circulation pool, the circulation pool is provided with a channel for passing through the detection hole, the circulation pool is provided with an input pipe, the input pipe is connected with the entrance of the channel, a rotating rod is rotatably provided in the input pipe, the rotation axis of the rotating rod is perpendicular to the length direction of the input pipe, the rotating rod is provided with a plurality of blades at intervals along its own circumference, the blades are provided with a plurality of first through holes and a plurality of second through holes, the blades are provided with an adjustment mechanism, the adjustment mechanism is used to adjust the first through hole to close the second through hole when it is opened or to adjust the second through hole to close the first through hole when it is opened. The present application has the effect of making it difficult for particles in the fluid to aggregate, improving the dispersion of particles, and ensuring the accuracy of particle detection to a certain extent.

This utility model relates to the technical field of PE pipe mixing devices, and more particularly to a PE pipe production mixing device, including a mixing box and fixed blocks; the mixing box is equipped with a mixing component for mixing PE pipe raw materials, and support components are installed on both sides of the mixing box. Two sets of fixed blocks are set at both the front and rear ends of the mixing box. The mixing component includes guide plates, which are arranged crosswise on both sides inside the mixing box. The guide plates have guide grooves inside, and a connecting rod is set inside the guide plate on the side of the guide plate near the inner wall of the mixing box. In this utility model, when the raw materials flow through the guide plates, the guide grooves play a guiding role, changing the flow direction of the raw materials. Through the crosswise arrangement of the guide plates, raw materials with different flow directions meet under the guidance of the guide grooves, promoting the circulation of raw materials in the mixing box, increasing the contact frequency and mixing opportunities between raw materials, and enabling different types and properties of raw materials to fully contact and mix, accelerating the production pace, increasing capacity, and reducing production costs.

The invention relates to the technical field of scraper conveyors, in particular to a scraper conveyor space double-chain right-angle turning assembly which comprises a rack, a material guiding device is arranged on the surface of the rack and comprises a material guiding groove and a material scraping plate, the material guiding groove is formed in the surface of the rack, and the material scraping plate is located in the material guiding groove. The inner wall of the material guide groove is fixedly connected with a positioning guide rail, a positioning groove is formed in the surface of the material scraping plate, the positioning guide rail is inserted into the positioning groove, and two symmetrical positioning holes are formed in the surface of the material scraping plate. According to the scheme, the scraper conveyor achieves right-angle conveying of materials, meanwhile, the integrated scraper plate is adopted, the situation that the scraper plate is disengaged in the using process is reduced, normal operation of equipment is ensured, meanwhile, the inclined groove is designed in an inwards-concave mode, the materials are effectively stacked on the inner side of the corner of the rack, it is ensured that the equipment can stably convey the materials, and the working efficiency is improved. And the working efficiency and the reliability of the scraper conveyor are improved.

This invention relates to an anti-cavitation device and method for fluid pipelines. The invention includes a fluid pipeline with a bend; a guide vane assembly disposed within the bend to guide the fluid flow at the bend; wherein the guide vane assembly includes a guide vane body, the guide vane body including guide vanes extending towards the outlet of the bend, the guide vanes being circumferentially arranged around the axis of the guide vane body, so that the fluid forms a controlled pre-swirling flow field before entering the bend outlet. This invention, by installing a guide vane-type device at the bend of the fluid system pipeline, changes the flow direction of the liquid, avoids abrupt changes in liquid velocity at the bend, eliminates boundary layer diversion, increases the absolute pressure inside the bend, and thus improves the cavitation resistance of the entire pipeline system.

The utility model provides a biological fermentation tank for preparing a microbial agent. The biological fermentation tank comprises a tank body and a sealing cover mounted on the tank body in a sealing manner, the stirring mechanism is arranged in the tank body and is used for fully mixing the raw materials; a feeding pipe with a control valve and an observation hole are arranged on the sealing cover; the discharge pipe is communicated with the outlet end of the tank body; the discharging sealing cover is mounted at the outlet end of the discharging pipe and is driven by a hydraulic driving mechanism. According to the utility model, by additionally arranging the discharging sealing cover which is opened and closed by the hydraulic driving structure, the biological fermentation tank can generate certain air pressure in the fermentation process, the air pressure can be propped against the discharging sealing cover, and meanwhile, certain pressure is applied to the discharging sealing cover through the hydraulic driving mechanism, so that the discharging sealing cover can be prevented from being opened.

The invention discloses a gas-liquid separation device and a vehicle, the gas-liquid separation device comprises an outer cavity, an inner cavity and a heat exchange assembly, the first end of the outer cavity is provided with a first inlet part, a second inlet part and an outlet part, the first inlet part is used for allowing a first refrigerant to flow in, and the second inlet part is used for allowing a second refrigerant to flow in; the inner cavity is arranged in the outer cavity, a first mixing area, a first heat exchange area and a first backflow area are sequentially defined between the inner side wall of the outer cavity and the outer side wall of the inner cavity, the first heat exchange area is communicated with the first mixing area and the first backflow area, and the first backflow area is communicated with the inner cavity. The first inlet part and the second inlet part are respectively communicated with the first mixing area, and the outlet part is communicated with the inner cavity; the heat exchange assembly comprises a heat exchange plate, the heat exchange plate is arranged in the first heat exchange area, and reversing holes are formed in the heat exchange plate. The gas-liquid separation device meets the ultralow temperature working condition and the heating working condition at the same time, and oil return, normal operation and the like of the compressor are guaranteed.

The invention discloses a bathroom air heating system and an integrated bathroom, and relates to the field of air conditioning, heat supply or ventilation, and the bathroom air heating system is characterized in that the bathroom air heating system comprises an air outlet and a heater, and the air outlet is formed in the side of a bathroom space; the heater is arranged above the bathroom space and suitable for conveying flowing hot air flow to the air outlet. And the air outlet of the warmer is arranged on the side of the carrier, so that hot air can be more uniformly distributed in the whole toilet. Compared with a traditional top warmer, by means of the arrangement mode, the temperature difference between the top and the bottom can be reduced, the upper portion and the lower portion of the human body can be covered more quickly, and more balanced comfortable temperature is provided.

The utility model relates to aluminium alloy extruding machine technical field, and disclose a kind of aluminium alloy extruding machine with cooling mechanism, including bottom plate, the top fixed mounting of bottom plate has fixed plate, this aluminium alloy extruding machine with cooling mechanism is rotated when the fan blade in fan is set with control component, and rotating rod can drive cam to rotate on the surface of support, when cam rotates, cam will be in contact with the section of slide bar, when the section of slide bar is contacted, slide bar can be forced to move horizontally in cooling box, when slide bar moves, the moving plate fixed on the surface of slide bar can drive movable plate to move horizontally synchronously, since slide bar is intermittently contacted, therefore, moving plate and movable plate can be intermittently opened and closed in front of cooling box, to continuously push airflow to be stirred, reach the purpose that the airflow around aluminium billet is continuously heat-exchanged, avoid the situation that cooling is uneven due to airflow direction is fixed.

The present invention relates to a paint shield and a paint shield assembly and a dry spray booth, which include a body, the body including a front shield paint surface and a rear shield paint surface, the front shield paint surface and the rear shield paint surface are symmetrically arranged, the front shield paint surface and the rear shield paint surface both include a first shield paint surface and a second shield paint surface, and an angle structure is formed between the first shield paint surface and the second shield paint surface. The present invention has the advantages of good paint shielding effect, simple manufacture, convenient installation, etc.

The utility model provides a direct combustion furnace, and relates to the technical field of waste gas treatment. Specifically, the direct-fired furnace comprises a combustion chamber, a combustor, a rotational flow assembly and a shielding piece. Specifically, based on the fact that the shielding piece is arranged between the combustor and the rotational flow assembly and the waste gas inlet is formed in the connecting cylinder, under the condition that the direct combustion furnace operates, the shielding piece can be arranged between the waste gas entering from the gas inlet and flames provided by the combustor in a shielding mode, and the flames are protected and stabilized; moreover, on the basis, the shielding piece can also be matched with the rotational flow assembly to change the flowing direction of the waste gas in the connecting cylinder, so that the retention time of the waste gas in the combustion cylinder is prolonged, and the purification efficiency is improved.

The present invention belongs to the technical field of sewage treatment, and in particular, relates to a cyclone aeration device. The cyclone aeration device of the present invention includes an aeration tank, a gas pipeline, a driving mechanism and a cyclone mechanism. The gas pipeline is used to introduce gas into the sewage. The driving mechanism can drive the cyclone mechanism to rotate to change the flow direction of the gas in the sewage. The cyclone mechanism is arranged above the gas outlet. The cyclone mechanism includes a first driving frame and a stirring blade. The stirring blade is assembled on the first driving frame. The driving mechanism can drive the first driving frame and the stirring blade to move up and down and rotate synchronously to push the sewage and gas downward and radially outward. The cyclone aeration device of the present invention uses the stirring blade to push the sewage and the gas introduced from the gas outlet downward and outward, which prolongs the moving distance and residence time of the gas in the sewage, and effectively improves the aeration effect.

The utility model belongs to the technical field of separation devices, and particularly relates to a chlorine demister which comprises a shell, a plurality of groups of tower plates are arranged in the shell, a plurality of groups of corrugated plate assemblies are arranged on the tower plates in a penetrating manner, each corrugated plate assembly comprises a front corrugated plate and a rear corrugated plate, and each front corrugated plate comprises a first upper folded plate and a second upper folded plate; the rear corrugated plate comprises an upper folded plate II, the bottom end of the upper folded plate II is sequentially connected with a middle folded plate I and a lower folded plate I, the rear corrugated plate comprises an upper folded plate II, the bottom end of the upper folded plate II is sequentially connected with a middle folded plate II and a lower folded plate II, and the upper folded plate II, the middle folded plate II and the lower folded plate II are matched with the upper folded plate I, the middle folded plate I and the lower folded plate I respectively; a connecting plate is arranged between the front corrugated plate and the rear corrugated plate, the distance between the upper folded plate I and the upper folded plate II is smaller than the distance between the lower folded plate I and the lower folded plate II, and by means of the device, the separation efficiency of fog drops in chlorine can be improved, and the chlorine purification effect and quality in the chlor-alkali industrial production process are improved.

The application is suitable for the technical field of mechanical assembly, and provides a spinning machine groove cylinder shaft liquid nitrogen cold assembly device.The device comprises a cooling system and an assembly system.The cooling system is composed of a liquid nitrogen storage bottle, an evaporator, a cooling rack and a cooling cylinder.The assembly system is an assembly mechanical arm, and further comprises a driving control mechanism, a flow adjusting mechanism and a supporting mechanism.The flow adjusting mechanism is composed of a fixing base, a reciprocating assembly, a mounting shaft and an S-shaped spoiler.The supporting mechanism cooperates with the driving control mechanism to complete automatic feeding and discharging of the spinning machine groove cylinder shaft, which not only facilitates rapid cooling of the spinning machine groove cylinder shaft by low-temperature nitrogen, but also facilitates clamping and interference assembly of the spinning machine groove cylinder shaft by the assembly mechanical arm.The flow adjusting mechanism cooperates with the driving control mechanism to complete disturbance of the low-temperature nitrogen, and forms a circulation mode of airflow acceleration and airflow supply in the cooling cylinder, so that the low-temperature nitrogen can fully contact with the spinning machine groove cylinder shaft, eliminates airflow dead angles, reduces the cooling and cold assembly time of the spinning machine groove cylinder shaft, and meets the demand of the device for batch cold assembly of the spinning machine groove cylinder shaft.

The invention relates to the technical field of yarn preparation, in particular to a yarn preparation premixing processing mechanism and method.The yarn preparation premixing processing mechanism is characterized in that a supporting frame is arranged on the surface of a mixing cylinder, a driving motor is arranged on the surface of the supporting frame, a supporting shaft is arranged at the transmission end of the driving motor, a base is arranged on the side face of a positioning ring, and a limiting bearing is arranged on the surface of the base; a supporting rod is arranged on the inner ring surface of the limiting bearing, a positioning bolt is arranged in the positioning plate, an auxiliary plate is arranged in the mixing plate, and a limiting plate is arranged in the mixing plate; the device has the beneficial effects that an auxiliary plate can be pulled out from a mixing plate by pulling out a positioning rod, the auxiliary plate is fixed by utilizing the positioning rod after being pulled out by a proper length, then a positioning bolt is rotated to enable one end of the positioning bolt to be separated from a threaded groove, and then the mixing plate can be rotated by matching with a limiting bearing; the angle of the mixing plate is adjusted and then fixed by the positioning bolt, so that the material flowing direction can be conveniently changed by changing the angle of the mixing plate, and the mixing effect is enhanced.

A portable AC-DC dual-purpose grounding resistance tester disclosed by the present invention comprises a box body, one side of the box body is fixedly provided with a heat dissipation fan, the other side of the box body is provided with a ventilation hole in a penetrating manner, one side of the heat dissipation fan is fixedly provided with a direction adjusting box, and the inner bottom of the direction adjusting box is slidably connected with a stirring frame. And a special-shaped disc is arranged above the shifting frame. A bidirectional motor is started, the output end of the bidirectional motor drives a cooling fan and a worm to rotate, the output end of a special-shaped disc drives a stirring frame to slide in a direction adjusting box, the stirring frame enables a stirring rod to swing along a limiting rod, an L-shaped sliding rod slides in the inner wall of the direction adjusting box, and during sliding, a stirring block pulls the L-shaped sliding rod to rotate in the direction adjusting box; and the flowing direction of heat dissipation air of the heat dissipation fan is changed, so that no-dead-corner cooling of electronic elements on the resistance tester body is realized, and the service life of the electronic elements is prolonged.

The utility model provides a silencing exhaust pipe of a motorcycle, belongs to the technical field of motorcycle components, and solves the technical problems that an existing silencing exhaust pipe is poor in silencing effect, cannot balance exhaust back pressure and the like. Comprising an air outlet end cover piece and an air inlet end cover piece, an exhaust pipe is arranged between the air outlet end cover piece and the air inlet end cover piece, a flow guide piece, a baffle piece and a ventilation silencing piece are sequentially arranged in the exhaust pipe from front to back, an air outlet pipe is arranged between the air outlet end cover piece and the ventilation silencing piece, and a flow guide pipe is arranged between the ventilation silencing piece and the baffle piece. According to the utility model, multiple times of volume mutation can be carried out, density and pressure are reduced, noise is weakened, flowing direction can be changed, kinetic energy is reduced, turbulent flow can be generated, noise is counteracted while exhaust efficiency is ensured, waste gas can be divided into a plurality of fine air flows, and the generated noise is absorbed and counteracted through a resonance effect, so that a drainage channel can be formed, condensate water can be discharged, and corrosion is avoided; pressure mutation can be relieved, exhaust back pressure is balanced, and noise can be reduced conveniently.

The invention relates to the technical field of kitchen appliances, in particular to an integrated range hood system. According to the integrated extractor hood system, a heat exchange cavity of a shell comprises a first area and a second area which are independent of each other, a phase change evaporator is arranged in the first area, and a phase change condenser is arranged in the second area; the oil smoke suction channel is located in the first area and does not communicate with the heat exchange cavity. The fresh air flow channel comprises a first flow section and a second flow section which intersect in the flowing direction. The flow guide plate is arranged in the second area, the flow guide plate is arranged on an airflow flowing path of the fresh air flow channel, and the flow guide plate is provided with a guide opening capable of enabling the fresh air flow channel to be bent from the first flow section to form a second flow section. The guide plates and the guide ports formed in the guide plates can form at least two circulation areas, so that the flowing direction of the fresh air flow can be changed, the fresh air can be stirred and mixed, and the temperature uniformity of the fresh air flow can be improved.

The invention relates to the technical field of hydraulic pressure, and discloses a hydraulic system for a hydraulic lifting bridge and a control method of the hydraulic system. A first-stage pressure control module, an overflow module and a plurality of second-stage pressure control modules are arranged in the hydraulic system, the hydraulic system is communicated with a rod cavity and a rodless cavity of a hydraulic oil cylinder of the lifting bridge, the first-stage pressure control module is communicated with a hydraulic oil tank, and the second-stage pressure control module is communicated with a hydraulic oil tank; the hydraulic oil can be conveyed in a pressurized mode, and the conveyed hydraulic oil flows into a rod cavity or a rodless cavity of the lifting bridge hydraulic oil cylinder through selective reversing of the second-stage pressure control module. When the oil pressure is too high, the overflow module enables redundant hydraulic oil to flow back to the hydraulic oil tank in a liquid separation and backflow mode, and therefore a multi-layer pressure protection system is constructed, overload can be effectively prevented, and the hydraulic system is protected against damage.

The utility model discloses a storage and cooling device for sealing strips. The storage and cooling device comprises a cooling chamber, an opening groove is formed in the side wall of the cooling chamber, a containing frame is assembled in the cooling chamber, an assembling groove is formed in the side wall of the cooling chamber, a cooling mechanism is assembled in the assembling groove, an air inlet is formed in one side wall of the cooling chamber, and an air outlet is formed in the other side wall of the cooling chamber. Through cooperation of a cooling chamber and a placing frame, a cooling mechanism in the cooling chamber is used for driving air in the cooling chamber to flow in the process of storing the sealing strips, air cooling operation is completed on the sealing strips, the cooling mechanism is redesigned, and through reciprocating motion of the output end of a hydraulic telescopic cylinder, the sealing strips can be cooled. The draught fan can incline by a certain angle in the running process, so that the flowing direction of air in the cooling chamber is changed, the air evenly passes through the sealing strip located in the containing frame, the cooling effect on the sealing strip is accelerated, and the cooling efficiency on the sealing strip is improved.

The present invention provides an axial-flow high-pressure centrifugal fan, comprising a variable-frequency motor with a rotor and a stator, and also comprising a casing guide plate and a centrifugal impeller fixed on the rotor. The casing guide plate, the centrifugal impeller and the variable-frequency motor are sequentially installed in a pressure-resistant casing according to air inlet and air outlet directions. An inlet connecting flange is also provided at the air inlet, and an outlet connecting flange is also provided at the air outlet. The casing guide plate is designed as a cylindrical ring with an inner side edge concave in an arc shape to form a guide edge. The casing guide plate is provided to help change the flow direction of the fluid after the air enters, so that the wind blows to the stator and the motor housing of the variable-frequency motor. The motor can be cooled without using a cooling system alone, so that the working environment is stable and the failure rate is reduced. The centrifugal impeller is used to replace the traditional fan blade impeller to provide stable fluid flow in a high-pressure environment, and the beveled guide line provided on the edge side guides the wind direction to flow in the direction of the stator and the motor housing.