71 results about "Airlock" patented technology

A centrifugal separator system separates particulate matter from an air stream produced by an industrial shredding machine. The system includes a housing having a cylindrical conical shape defining an interior chamber. An inlet positioned tangentially near the top of the housing introduces an air and particle mixture to create a vortex flow that centrifugally displaces heavier particles where they slide downward to discharge aperture. Clean air reverses direction and exits upward through a central top outlet connected to a HEPA filter for removing residual dust. A first silo directs is used to decelerate separated particles which are directed through a rotary valve providing an airlock to maintain pressures for optimizing centrifugal separation of particles. A second silo receives a bag holder for ease of securing a collection bag. The system provides efficient separation of particles with minimal maintenance and allows continuous operation.

The utility model discloses a novel mechanical snap ring type air door interlocking device which comprises a first air door, a second air door, connecting baffles and an air door interlocking mechanism, and the connecting baffles are installed on the first air door and the second air door respectively. Door frames of the first air door and the second air door are each provided with one air door interlocking mechanism, and the air door interlocking mechanism at the position of the first air door is connected with the second air door through an interlocking rope and a telescopic spring; and the air door interlocking mechanism at the second air door is connected with the first air door through another interlocking rope and a telescopic spring. When one air door is opened, the other air door is completely in a locked state and cannot be opened, so that the air flow of a roadway is isolated or the air quantity passing through the roadway is limited.

The utility model discloses a tray supply mechanism, which is characterized in that a tray box is hermetically connected to a coded disc box, an accommodating cavity is arranged in the tray box, the tray box is provided with a channel communicated with the accommodating cavity and an inner cavity of the coded disc box, the tray box is provided with an air gate assembly for opening and closing the channel, and the side end of the tray box is provided with a material supplementing opening and a bin gate which can be opened and hermetically covered on the material supplementing opening; the tray rack is arranged in the accommodating cavity, and a tray is placed on the tray rack; the lifting assembly is used for driving the tray rack to vertically lift; and the push-out assembly is used for pushing out the push tray at the uppermost end of the current tray rack towards the channel, the trays on the tray rack are supplied into the tray stacking box one by one through cooperation of the lifting assembly and the push-out assembly, and then automatic supply of the trays is achieved.

The utility model relates to the technical field of oil extraction, in particular to an efficient temporary plugging anti-overflow device. Comprising an upper connector, the upper connector is fixedly and hermetically connected with a valve connector, the lower end of the valve connector is fixedly and hermetically connected with a filter pipe and an outer cylinder, the filter pipe is located on the inner side of the outer cylinder, the valve connector is provided with an air hole communicated with an annular cavity between the outer cylinder and the filter pipe, and a check valve is installed in the air hole; the lower end of the filter pipe is fixedly and hermetically connected with a lower pipe located inside the outer cylinder, the lower end of the lower pipe is blocked and fixedly connected with the lower end of the outer cylinder through a lower connector, and a temporary blocking plate is detachably, fixedly and hermetically connected into the lower connector. Through soluble temporary plugging, multi-stage filtering, gas-liquid separation and modular sealing design, the device has the core advantages of efficient overflow prevention, rapid production, airlock prevention, low maintenance cost and the like, has both environmental protection property and economical efficiency, and is suitable for oil well operation under complex working conditions.

A device for inserting a sample into a sealed enclosure includes: a sample carrier for holding the sample; an insertion rod including an elongate portion for bearing the sample carrier; a transfer airlock including an outer door to close in a watertight manner and to open onto an environment outside the sealed enclosure, an inner door to close in a watertight manner and to open onto the inside of the sealed enclosure, and a sealed chamber defined between the outer door and the inner door when they are in the sealed configuration, the sealed chamber being able to accommodate the sample carrier inserted by the insertion rod; and a system for purifying the contained fluid medium, the sample carrier, and the sample which are accommodated in the sealed chamber.

The invention relates to the technical field of solid waste resourceful treatment and industrial automation control, and discloses a cracking production line intelligent control method and device.According to the cracking production line intelligent control method, a virtual accumulated energy index is calculated by collecting operation parameters of a feeding and discharging unit, and accordingly whether a conveying pipe section has a soft blockage trend or not is judged; after it is confirmed that the blocking trend exists, the material level of the colloidal particle buffering bin is detected to verify the material sealing safety; and when the safety condition is met, gas machine cooperative control is triggered, the feeding star-shaped discharger is driven to execute S-shaped pulse airlock action, and meanwhile, the raw material feeding auger is controlled to execute trapezoidal wave frequency sweeping conveying action until the virtual accumulated energy index is recovered. The blockage risk is pre-judged in advance through energy monitoring, efficient dredging is achieved through frequency conversion vibration and pulse control on the premise that reaction airtight safety is guaranteed, non-planned shutdown is effectively avoided, and the operation stability of a production line is improved.

This invention discloses an integrated intelligent device and control method for oil and gas negative pressure suction and booster mixed transportation, relating to the field of oil and gas field development booster technology. It includes a heating unit and a pumping unit connected sequentially from the direction of produced fluid transportation. The pumping unit includes two booster pump sets connected to the oil outlet pipeline of the heating unit. The two booster pump sets are connected in parallel and alternately suction and transport the produced fluid in the oil outlet pipeline. The heating unit's pretreatment method, which reduces the viscosity of the produced fluid and improves its fluidity, creates favorable conditions for subsequent pumping. The operation mode of two sets of booster pump sets connected in parallel and alternately suctioning can form a continuous and stable negative pressure in the oil outlet pipeline, effectively avoiding fatigue overload and airlock phenomena caused by continuous operation of a single pump set. This ensures that high-viscosity or gas-containing produced fluid can be smoothly and continuously sucked in and discharged, thereby significantly improving the operational reliability and pumping efficiency of the entire transportation system.

A ship comprises a hull, an air conditioner provided in a residential section, and the residential section, which is provided in the hull. The residential section is provided with: a plurality of rooms provided within the residential section; a passage provided within the residential section, the passage being connected to the plurality of rooms; an air lock room that is isolated from the passage by an openable / closable first door and is isolated from the exterior of the residential section by an openable / closable second door; an air supply duct that is capable of supplying air of which the temperature is adjusted by the air conditioner to at least some rooms among the plurality of rooms and to the air lock room; an air return duct for returning air from the passage to the air conditioner; and an air exhaust duct for forcibly discharging air to the exterior via at least some other rooms among the plurality of rooms.

One or more techniques and / or systems are disclosed for a clearing system designed for use within a pump to enhance maintenance efficiency and operational reliability. The clearing system may be integrated into a pump housing and specifically configured to address blockages in a weephole to mitigate airlock within the pump's inner chamber. This system may include a plunger mechanism, which is actuated by a user-operated button member. Upon activation, the plunger extends into the weephole to clear any obstructions, thereby maintaining the essential flow and pressure balance required for optimal pump performance.

An airtight type tobacco stem blanking airlock comprises an airlock shell and a rotor, the upper end of the airlock shell is provided with a feeding port, the lower end of the airlock shell is provided with a discharging port, and the left end and the right end of the airlock shell are provided with side covers; the rotor is installed in the airlock shell and is hollow, grooves are formed in airlock blades of the rotor in the length direction, sealing strips and adjusting push plates are installed in the grooves, through holes are formed in the bottoms of the grooves, adjusting rods with push springs are installed in the through holes, and adjusting shaft sleeves used for pushing the adjusting rods are installed in the rotor. A push shaft is fixedly arranged in the adjusting shaft sleeve in a penetrating mode, rotating covers are fixedly connected to the two ends of the rotor respectively, the rotating covers at the two ends are correspondingly and fixedly connected with a first hollow main shaft and a second hollow main shaft, and the first main shaft and the second main shaft are rotationally connected with the side covers respectively. The end parts of the main shaft I and the main shaft II are correspondingly connected with an opposite vertex adjusting bolt and an opposite vertex sealing bolt; and a driving wheel is mounted on the main shaft II. The airlock is good in airtightness and convenient to maintain.

The utility model provides a vertical mill slag discharge port airlock unloading flap valve for cement production, which comprises a flap valve main body, and a receiving box used for guiding cement production waste slag is arranged in the flap valve main body, compared with the prior art, the vertical mill slag discharge port airlock unloading flap valve has the beneficial effects that the flap valve main body and an overturning control mechanism are additionally arranged, so that the vertical mill slag discharge port airlock unloading flap valve is convenient to operate; the overturning control mechanism is installed on the right rear side of the bearing box, a main hydraulic rod stretches out and draws back to drive a linkage rod to rotate, the right end of the linkage rod drives a discharging rotating shaft to rotate, the linkage rod increases the length of a power arm, and two sets of auxiliary hydraulic rods drive the right end of a discharging overturning plate to rotate in the rotating process of the discharging overturning plate. After the upper surface of the discharging turning plate is attached to the lower surface of the collecting groove, the sealing bottom frame is embedded to the outer side of the expansion sealing ring, the discharging turning plate presses the inflation bag to inflate and expand the interior of the expansion sealing ring, and therefore the closing sealing performance can be improved, and by additionally arranging the turning plate valve body, the turning control mechanism and the rear housing, dismounting and using can be convenient.

This invention relates to an intelligent grain suction machine, comprising: a suction nozzle, a suction head, a front turning joint, a sealing sleeve, a rear turning joint, a three-way pipe, the top side of which is fixedly connected to the bottom side of the rear turning joint, the bottom side of which is connected downwards, and the front side of which is connected forwards; a dust collector, fixedly connected to the front side of the three-way pipe, forming a front filter layer of the three-way pipe; an airlock, fixedly connected to the bottom side of the three-way pipe; a fan assembly, fixedly connected to the dust collector; a belt conveyor, spaced below the airlock; a support frame, which serves as a support frame for the rear turning joint; a flat mounting frame, on which the support frame for the dust collector and the fan assembly is mounted; a frame, on which the flat mounting frame is mounted, and the bottom surface of which has multiple support legs; casters, mounted on the bottom surface of the support legs of the frame; and a power supply, mounted on the bottom surface of the frame. This invention utilizes the characteristics of light dust and heavy grains, allowing grains to separate downwards and dust to separate laterally, thus improving efficiency.

A sand optimizer (100) is disclosed A vertical shaft impactor crusher (105) includes a crushing chamber (110) to process stone material. A rotor (105A) generates a hot airflow and directs an upward dust flow. An induced draft fan (125) extracts fine dust and circulates air stream. A cyclone assembly (130) collect fine dust and separate clean air. A second rotary air lock (135) prevents the air with dust emission and allow the fine dust to exit the cyclone assembly. An amibatic non-return air duct (140) prevents fine particles from entering a discharge air duct and direct the clean air into the vertical shaft impactor crusher. A third rotary air lock (145) allows a final product to exit. A bag filter (155) bypass excess air. A plurality of valves including a butterfly valve and pendulum valve. At least two hydraulic cylinders provide unidirectional force by converting hydraulic energy into mechanical energy.

Plant for carrying out process steps on containers at least partially under cleanroom conditions, wherein the process steps include at least filling and closing the containers under cleanroom conditions, wherein the system (1) comprises a cleanroom structure (2), a filling station (3) for filling a container and a closing station (4) for closing a filled container, wherein the cleanroom setup (2) comprises an enclosure (20), wherein an interior (200) of the enclosure (20) is separated from an environment and the cleanroom condition can be met in the interior (200) of the enclosure (20) of the cleanroom setup, wherein the interior (200) of the housing (20) is closed in an operating state, wherein the housing (20) has a passage with a lock for introducing containers (5) to be filled into the closed interior (200) of the housing (20), and / or wherein a discharge interface (28) is provided on the housing (20) for the discharge of filled and sealed containers (5) from the closed interior (200) of the housing (20).

This utility model provides a vertical mill inlet airlock device and sealing structure, including: a vertical mill assembly, which includes a vertical mill body, a feed pipe, a rotating feed seat, a storage box, and a discharge baffle. Compared with the prior art, this utility model has the following beneficial effects: By adding the vertical mill assembly, the raw material is first poured into the storage box for temporary storage, and then fed into the vertical mill body via the rotating feed seat. The material stored in the storage box is isolated from the outside world. Due to the interruption of feeding caused by the upper structure, the discharge baffle is placed in the sealing groove and fitted to block the communication between the feed pipe and the inside of the vertical mill body, thereby improving the sealing effect. By adding the vertical mill assembly and the supporting storage box, the supporting storage box can be selected according to the production feeding speed, and the connection sealing is improved by the sealing ring. The supporting storage box and the storage box increase the storage capacity, which can further assist the sealing.

This invention discloses a cylindrical radiator assembly, relating to the field of radiator technology. It aims to improve upon the technical contradiction between high heat exchange efficiency and operational reliability in liquid-cooled radiators. Based on a cover plate and base plate riveted together to form a cooling chamber, the base plate surface is provided with equidistantly arranged mounting blocks to form directional flow channels. Within these directional flow channels are dynamically distributed, wave-shaped staggered flow paths. Rotatable mounting blocks with spiral flow channels are installed within the dynamic flow paths via positioning supports. The positioning supports contain elastic spring rods with metal impact balls. Through this rotatable turbulence structure and controllable vibration design, the turbulent heat exchange effect of the coolant is significantly enhanced under low flow resistance, while simultaneously suppressing coolant cavitation and airlock problems. This significantly improves the heat exchange efficiency and operational reliability of the radiator, making it suitable for liquid cooling scenarios in various high-power equipment.

The utility model discloses an anti-jamming airlock and paddle structure thereof, including roller and rotating vane subassembly, rotating vane subassembly includes first rotating vane piece, second rotating vane piece and third rotating vane piece, first rotating vane piece, second rotating vane piece and third rotating vane piece one end is equipped with connecting piece, first rotating vane piece includes first rotating vane plate, second rotating vane plate includes second rotating vane plate, third rotating vane plate is equipped with second rotating vane plate, third rotating vane plate is equipped with second rotating vane plate. A first cutting piece is arranged at one end of the first rotating vane plate, the second rotating vane piece comprises a second rotating vane plate, a second cutting piece is arranged at one end of the second rotating vane plate, the third rotating vane piece comprises a third rotating vane plate, and a scraping piece is arranged at one end of the third rotating vane plate. By means of the design of the rotating roller, the rotating vane assembly, the first cutting piece, the second cutting piece and the scraping and sweeping piece, the rotating roller drives the first rotating vane plate, the second rotating vane plate and the third rotating vane plate to rotate, so that the first cutting block and the second cutting block impact and cut attachments adhered to the inner wall of the shell respectively, scraping and sweeping of a scraping plate are facilitated, and the service life of the shell is prolonged. The effect of preventing material blocking is achieved.

This utility model discloses an air damper control system applied to the built-in air duct of a stenter. It includes an operating console for sending air damper rotation analog signal control commands, and an air damper baffle set inside the stenter oven and opposite to the air duct inlet. A rotating rod with its other end extending out of the air duct is connected to the air damper baffle. The extended end of the rotating rod is connected to an analog damper actuator for receiving the air damper rotation analog signal control commands sent by the operating console and driving the rotating rod to rotate so that the air damper baffle rotates. After the operating console sends the air damper rotation analog signal control commands, the analog damper actuator can accurately drive the rotating rod to rotate, thereby accurately adjusting the opening angle of the air damper baffle.

The utility model relates to the technical field of calcining furnaces, in particular to a double-furnace-door sealing high-temperature calcining furnace which comprises a conveying platform and a transition cabin, one end of the transition cabin is rotatably connected with an outer sealing door, the other end of the transition cabin is fixedly connected with a protection frame, and the interior of the protection frame is fixedly connected with an inner furnace. And an inner door is rotationally connected between the transition cabin and the protective frame. The device adopts a basic structure of the double-furnace-door airlock chamber, the transition cabin is isolated from the outside and the inner furnace through the outer sealing door and the inner door, and the device has the core advantages that physical isolation between the feeding and discharging process and the high-temperature atmosphere environment in the furnace is realized, so that material transmission is completed on the premise of maintaining the stability of the process conditions in the furnace, and the service life of the material is prolonged. The energy utilization efficiency is remarkably improved, the process atmosphere is protected, the production continuity and safety are improved, and the problems of a traditional high-temperature furnace in the aspects of atmosphere maintenance, heat energy management and continuous production are effectively solved through an exquisite mechanical structure and systematic design.

The invention discloses an electric submersible screw pump dry grinding and airlock regulation and control method, equipment and a medium, and relates to the technical field of mining equipment fault regulation and control. The method comprises the steps that motor winding temperature data, pump inlet pressure data and unit vibration data in the operation process of the electric submersible screw pump are obtained; extracting a temperature change rate and a pressure fluctuation amplitude according to the motor winding temperature data and the pump inlet pressure data, and extracting an energy value of a preset frequency band in the vibration spectrum according to the unit vibration data; inputting the temperature change rate, the pressure fluctuation amplitude and the energy value of the preset frequency band into a pre-constructed risk identification model, and outputting a risk type; and when the output risk type is a dry grinding risk or an airlock risk, performing a self-adaptive regulation and control sequence. By means of the method, multi-parameter fusion recognition of the dry grinding risk and the air locking risk is achieved, early symptoms of two fault modes can be accurately distinguished, and misjudgment and missed judgment caused by single parameter monitoring are avoided.

The invention relates to a ventilation control system, in particular to a marine engine room ventilation pneumatic fireproof air brake control system and method, and the system comprises a fireproof control station, an emergency power supply unit, and a plurality of groups of fireproof air brake assemblies. The fireproof control station sends a control instruction to the fireproof air brake assemblies and receives action state signals fed back by the fireproof air brake assemblies at the same time; the emergency power supply unit comprises a power distribution box which is connected with the fireproof control station and the fireproof air brake assemblies through cables. The multiple sets of fireproof air brake assemblies comprise air brake bodies and driving control modules. The driving control module is used for receiving a control instruction of a fireproof control station; the ventilation pneumatic fireproof air brake control system is high in reliability, rapid in response and high in adaptability, and meets the classification society specification requirements.

The utility model relates to the technical field of seed impurity removal equipment, in particular to a pea screening and impurity removal device which comprises a bin body, a screen drum is fixedly connected in a left cavity of the bin body, an auger is installed in the screen drum, a material rotating bin is arranged at the output end of the right side of the screen drum, a first air closing device is fixedly connected to the bottom of the material rotating bin, and a fan is fixedly connected to a baffle. An air outlet is formed in the right side cavity, a second discharging opening and a third discharging opening are formed in the lower portion of the right side cavity, a second air-lock valve is fixedly connected to the lower portion of the second discharging opening, a third air-lock valve is fixedly connected to the lower portion of the third discharging opening, and a material distributing cone is fixedly connected between the feeding end of the second discharging opening and the feeding end of the third discharging opening; according to the screening and impurity removing device, small-size impurities such as laterally-crushed seed pods and thick crushed skin particles at the wrinkles of the seed pods are screened out in advance through the screening drum with the auger, light impurities such as crushed pods and crushed stems and leaves are screened out through winnowing, and the process is simplified while the screening and impurity removing effect is guaranteed.

This utility model relates to an airlock unloading device for a centrifugal spray dryer, belonging to the technical field of drying equipment. This utility model uses a rotating shaft, a pusher plate, and an airlock cover in conjunction. As the material is pushed out of the discharge port, the airlock cover blocks the airflow, effectively preventing airflow from escaping from the discharge port and further reducing the outflow of hot air from the drying tower. This ensures stable temperature inside the drying tower and improves drying efficiency.

The invention relates to the technical field of pipeline safety engineering, and discloses an airlock air curtain for closing smoke and fire of a pipeline, which comprises an outer shell, an inner shell is coaxially sleeved in the outer shell, an upper cover plate and a lower cover plate are respectively assembled at two axial ends of the outer shell and the inner shell, and the upper cover plate and the lower cover plate are both of annular structures; the outer shell, the inner shell, the upper cover plate and the lower cover plate jointly define a closed cavity, an air inlet is formed in the side wall of one end of the outer shell, a slag discharging opening is formed in the other end of the outer shell, a closing valve is arranged on the slag discharging opening, a plurality of spiral air outlets are formed in the side wall of the inner shell in the circumferential direction, and the spiral air outlets are evenly distributed in the axial direction of the inner shell. Compressed air is introduced through the air inlet holes, a continuous and uniform air curtain wall is formed through the spiral air outlet holes in the inner holes, and the safety and reliability of equipment operation are greatly improved by means of the blocking effect of airflow.

This utility model proposes a feeding device for a metallurgical smelting furnace, comprising: a feeding hopper, an airlock pipe, and a connecting pipe. The feeding hopper is connected to the upper part of the connecting pipe via the airlock pipe. The lower part of the connecting pipe is fixed to the upper part of the furnace top cover and is connected to the inner cavity of the furnace. The airlock pipe includes an inner pipe and an outer pipe, with the outer pipe coaxially fitted around the outer circumference of the inner pipe and both ends of the outer pipe sealed. The inner and outer pipes form an annular cavity. An air inlet pipe is provided on the side wall of the outer pipe, communicating with the annular cavity. An air outlet is provided on the side of the annular cavity near the connecting pipe, and the annular cavity is connected to the interior of the connecting pipe through the air outlet. This utility model forms a downward pressure air screen by creating an annular cavity within the airlock pipe. After high-pressure air is introduced into the annular cavity, the airflow is led out through the air outlet and blown towards the connecting pipe, thereby suppressing the escape of flue gas from the furnace inlet, reducing the load on the negative pressure fan, and extending the service life of the negative pressure fan.

The invention provides an automatic stacking and alternating device for magnesium-based solid hydrogen storage forming bodies. The device is arranged in a closed storage cavity at the lower end of a solid material transfer system, runs in an inert or vacuum atmosphere, and is composed of a butt joint interface and micro-area airlock unit, a secondary buffer blanking unit, a bearing and stacking unit, an automatic rotation mechanism, an anti-vibration and anti-static assembly and an atmosphere circulation purification and monitoring control unit. Through the cooperation of airlock-DBB-bypass purging-circulating purification, the O2 / H2O steady state of a cavity is smaller than or equal to 1 ppm in the filling and transposition process, the disturbance peak value is smaller than or equal to 5 ppm, and recovery is conducted within 30 s; through the mechanical constraint of slow descending, distribution and acceleration limiting, the effective falling height is smaller than or equal to 100 mm, the acceleration peak value of a bearing area is smaller than or equal to 0.5 g, and the risks of formed body pulverization and edge cracking are remarkably reduced. The device is compatible with an upper-end multi-tank rapid butt joint and atmosphere cooperative control system in rhythm, differential pressure and interlocking logic, and a continuous, safe and high-cleanliness magnesium-based solid hydrogen storage and transportation system can be constructed.

This invention belongs to the field of powder collection and filtration technology, specifically referring to a grading and dust removal device for crushing viscous materials. It includes a wave-shaped collection mechanism, a powder separation cylinder, a grading and screening mechanism, a rotary airlock assembly, a first frame, and a second frame. The wave-shaped collection mechanism is located within the powder separation cylinder, which is mounted on the first frame. The grading and screening mechanism is mounted on the second frame, and the rotary airlock assembly is located below the grading and screening mechanism. This invention proposes a wave-shaped dust collection assembly and an automatic conveying assembly. Through the wave-shaped design of the wave-shaped screen plate, combined with the powder collection pipe and conveying auger located below the upper arc, the powder intercepted by the wave-shaped screen plate automatically falls into the powder collection pipe after losing airflow propulsion. Simultaneously, the two sides of the lower arc also guide the airflow, causing the powder that originally impacted the lower arc to move with the airflow to the upper arc.

Described herein are systems for an aseptic connector, including a reusable aseptic connector. A connector system is provided for establishing the aseptic fluid connection. The connector system includes a first connector, a second connector and an airlock. Also provided is an air lock and a connector, as well as methods of use thereof.

The invention discloses a subway station flood-proof protection air-tight door control system, and relates to the technical field of civil air defense engineering protection, and the subway station flood-proof protection air-tight door control system comprises a water level detection module, a main control module, a door body driving mechanism and a man-machine interaction module; the water level detection module detects the water level of a subway station entrance in real time; the main control module determines whether the detected water level exceeds a first set water level value or not, if yes, a first alarm signal is generated, and the water level rising speed is determined; the main control module also determines whether the detected water level exceeds a second set water level value or not, and generates a second alarm signal when the detected water level exceeds the second set water level value or the water level rising speed exceeds the set rising speed; the man-machine interaction module displays the first alarm signal and the second alarm signal; the main control module generates a door opening and closing control instruction according to a user instruction; and the door body driving mechanism controls the flood-proof protective air-tight door to be opened and closed according to the door opening and closing control instruction. Dependence on manual water level judgment and corresponding operation execution can be reduced, and the subway station protection effect is improved.

The utility model provides an automatic water replenishing double-ring infiltration instrument for measuring hydraulic gradient. Comprising a water replenishing device and a double-ring infiltration instrument. The water replenishing device comprises a siphon, a flow meter, an airlock and a water tank with a ball valve. The double-ring infiltration instrument comprises an inner ring, an outer ring, a connecting hole, a fixed supporting rod and an L-shaped pressure measuring tube. The siphon is arranged between the water tank and the double-ring infiltration instrument; the flow meter is mounted on the siphon; the airlock is positioned on the siphon and is vertical to the water tank; the inner ring and the outer ring are combined through the fixed supporting rods to form an inner and outer integrated double-ring structure; the L-shaped piezometric tube is placed in a connecting hole of the inner and outer rings and the center of the inner ring. The device has the advantages of being reasonable in structure, convenient and fast to manufacture, low in cost, easy to use, high in applicability and capable of being widely applied to the fields of rock and soil testing, construction monitoring, scientific research and the like.