9286results about How to "Easy to install and disassemble" patented technology

The invention relates to a drilling well control parameter intelligent monitoring system which comprises a monitoring part for drilling fluid cycling volume, a monitoring part for drilling fluid inlet and outlet flow, a monitoring part for drilling fluid inlet density, outlet density, drilling temperature, outlet natural gas, and H2S concentration, a monitoring part for wellhead pitshaft flowing fluid level and table torque, and a collection instrument part. All the signals are transmitted into the collection instrument to be collected through an RS485 network cable; after data processing is carried out, the data is transmitted to a drill floor parameter display device and a central station host computer through a wireless data transmission device; the data storage, display and print are carried out by the host computer, and the data is simultaneously uploaded into a data platform processor of an upper-level command center; finally, remote control realtime processing and monitoring are carried out on all the well control parameters of all the drilling crews. The intelligent monitoring system has the beneficial effects of realizing omnibearing, long-distance and timely drilling well control, safe production, and playing better role in preventing the occurrence of accidents such as well kick, loss circulation, blow-out, etc.

The invention discloses an electric pressure cooker vapor exhausting device which structurally comprises an electric pressure cooker, a pot cover, a water collecting tank, an exhausting device and a control panel. The control panel is arranged at the front portion of the electric pressure cooker. A power line is arranged at the rear portion of the electric pressure cooker. The left side of the electric pressure cooker is connected with the water collecting tank through a buckle. A silica gel seal ring is arranged on the top of the electric pressure cooker by a circle. The pot cover is arrangedon the top of the electric pressure cooker. The right portion of the pot cover is in threaded connection with a fixed base. A handle is arranged on the top of the fixed base. The left portion of thehandle is connected with the exhausting device. The water collecting tank is composed of a liquid level sensor, an alarm device, a concave hole and a natural rubber seal ring. The exhausting device comprises a fixed column, a synthesized rubber seal ring, a telescopic elastic head, a vapor inlet, a vapor guide pipe, a liquefied device and an exhaust pipe. The electric pressure cooker vapor exhausting device is convenient to install and detach, high in sealing performance and high in intelligence and efficiently senses the vapor liquid level.

The invention relates to a mixed type shape memory alloy multi-dimensional vibration isolator, which belongs to the technical field of civil engineering. The vibration isolator mainly comprises an upper flange, an internal cylinder, martensite shape memory alloy energy-consuming springs, austenite shape memory alloy twisted lines, an external cylinder, a base plate, thin-wall shape memory alloy hollow balls and a lower flange. The vibration isolator is characterized in that the upper end of the internal cylinder is connected with the upper flange while the lower end is connected with the base plate, the lower end of the external cylinder is connected with the lower flange, the internal cylinder is connected with the external cylinder through three layers of the martensite shape memory alloy energy-consuming springs and the twisted lines, and the shape memory alloy twisted lines are penetrated in the shape memory alloy energy-consuming springs; each layer contains eight groups of the shape memory alloy energy-consuming springs and the twisted lines which are arranged symmetrically along the circumferential radial direction of the internal cylinder; three layers of the thin-wall shape memory alloy hollow balls are placed in the external cylinder; and the vibration isolator is fixed on a part of which the structure needs vibration control by the upper flange and the lower flange. The vibration isolator has the advantages of comprehensively utilizing the hyperelasticity and the high damping characteristic of shape memory alloys and achieving the multi-dimensional direction vibration control.

The invention discloses equipment for cleaning a current-resistance submerged cage netting and a method for cleaning the current-resistance submerged cage netting. The cleaning equipment is characterized in that a current-resistance submerged cage comprises a circular cage floating collar and a netting installed on the cage floating collar; a guardrail tube is installed at the top of the cage floating collar, a floating collar track is installed on the cage floating collar through a first movable fixing support platform, a cleaning trolley with a cleaning shower is installed on the floating collar track, and the cleaning shower is connected with a movable host platform which can provide high-pressure water, electric energy and high pressure gas. According to the cleaning equipment, when the netting is cleaned, each position of the netting can realize the cleaning effect of 'cleaning with a hairbrush-flushing with high pressure water-cleaning with the hairbrush', the cleaned netting can be effectively ensured in cleanliness, meanwhile the cleaning effect can be achieved when relevant cleaning equipment is in a progressive process, and thus the cleaning equipment and the cleaning method are relatively high in efficiency.

The invention relates to a large-span steel truss arch construction method. The invention is characterized in that the method comprises the following steps: 1) based on the alignment design of an main arch ring of a reinforced concrete arch bridge, if a main arch span of the reinforced concrete arch bridge is not more than 100m, an arc line is adopted as the line shape of a arch axis line of the steel truss arch; if the main arch span of the reinforced concrete arch bridge is more than 100m, a catenary line or a parabola curve is adopted as the line shape of the arch axis line of the steel truss arch; big samples of a first unit truss segment and a second unit truss segment are produced for steel truss arch ribs on a sample platform according to the scale of 1:1; 2) the inner side of a first main arch support is widened to form a first base of the steel truss arch, the inner side of a second main arch support is widened to form a second base of the steel truss arch; 3) the erection sequence of the unit truss segments is that: first arranging steel truss arch ribs on the upper course of a river, then arranging steel truss arch ribs in sequence to the lower course of the river; 4) the back arch elevation of the steel truss arch is adjusted to the level of the arch soffit elevation of the main arc ring. The construction method is not limited by the terrain condition and site condition of bridge location and is simple and easy to install and remove.

A portable system for documenting the height of one or more children during their growth. The system comprises an elongated frame that can be disassembled into segments for travel.

The invention relates to an air floatation high-speed electric main shaft, in particular to an air floatation high-speed electric main shaft for a machining tool. A lower air bearing block assembly 7 is fixed on a thrust bearing 9, the upper part of the lower air bearing block assembly 7 is provided with a stator 6, the front end of a shaft core 5 is provided with a chuck accessory 11, an aluminum water jacket assembly 3 is fixed at the upper opening of a body assembly 10, and a tool changing cylinder assembly 1 is fixed on the upper part of the aluminum water jacket assembly 3; and the middle part of the shaft body of an upper air bearing 4 is provided with an upper air bearing cooling water passage 12. The main shaft is an electromechanical integrated base piece with high revolution number and high precision, has simple and compact structure, and is convenient to install, high in heat dissipation efficiency, multifunctional and convenient for popularization and application.

The invention relates to a flocculation reactor with a special-shaped spoiler, and the flocculation reactor provided by the invention comprises a reactor shell, a stirrer arranged in the middle part of the reactor, special-shaped baffles arranged on the inner wall of the reactor and spoiler grids arranged on an upper head, wherein the upper part of the side wall of the shell is provided with a material charging port, and the bottom part of the side wall of the shell is provided with a material discharging port; the forms (the shapes of the axial cross sections) of the special-shaped baffles comprise bulges in a sine shape, a wave shape, a semicircular arc shape, a circle shape or an irregular shape; the baffles are arranged vertically, obliquely or horizontally; and multiple baffles are uniformly or irregularly scattered or continuously fixed on the inner wall of a flocculator. The height, width and thickness of the spoiler can be changed along the circumference direction or axial direction of the inner wall of the reactor. The spoiler and the stirrer are matched through different forms, thereby fully mixing a flocculating agent with liquid, improving the shearing rate of fluid, reducing dead zones of a flow field, enhancing a micro-vortex and achieving the purposes of strengthening a flocculation flow field and enhancing the flocculation effect. The flocculation reactor provided by the invention has the advantages of simple structure, high flocculation efficiency, low cost and good application prospect, and is convenient in installation and maintenance.

A water dispenser is provided for dispensing hot water, cold water, and carbonated water, all of which is filtered. The dispenser includes a housing defining a front dispensing face, a rear face, opposite side walls and a bottom wall. A filter is mounted in the housing and has a rear end connectable to a source of water and a front end accessible at the front face of the housing to facilitate replacing the filter. A dispensing faucet is disposed at the front face of the housing. A hot water tank is located at one side of the housing and has an inlet for receiving filtered water from the filter and a hot water outlet near the dispensing faucet for delivering hot water thereto. An ice bank assembly is located at an opposite side of the housing and has an inlet for receiving filtered water from the filter and a cold water outlet near the dispensing faucet for delivering cold water thereto. A compressor is mounted on the bottom wall of the housing and is coupled to one end of the ice bank evaporator. A condenser coil is mounted at the rear face of the housing and is coupled between the compressor and an opposite end of the evaporator. A carbonator has an inlet for receiving filtered water from the filter and an outlet near the dispensing faucet for delivering carbonated water thereto.

The invention discloses a soil sample collecting device for geological exploration. The soil sample collecting device comprises a machine frame; the machine frame is arranged in an inverted T shape; the left side and the right side of the bottom of the machine frame are in threaded connection with adjusting columns which are vertically arranged; the top of the machine frame is in screw connectionwith a screw rod; a first motor is fixed at the bottom of the screw rod; sliding grooves are formed in the left side and the right side of an inner cavity of the machine frame; a supporting plate is connected between two sliding blocks; the bottom of the first motor is connected to the top of the supporting plate; and the output end of the first motor is connected with a rotating shaft. A soil layer is crushed under the action of a drill bit and a crushing blade, then a soil sample is moved upwards under the action of a spiral propeller, and soil is pushed into a sampling barrel and is moved upwards, so that the pushed soil falls into an obliquely-arranged sampling box through a second threaded sleeve and is collected; and the second threaded sleeve and the sampling box are in threaded connection, so that the disassembly and installation of the second threaded sleeve and the sampling box are facilitated, and the sampling box can be replaced when the soil with different depths is collected.

The invention discloses a cigarette liquid storage device, an electronic cigarette atomizer and an electronic cigarette. The cigarette liquid storage device comprises a body, wherein a cigarette liquid guider is fixedly arranged on an outer wall on at least one side of the body; the cigarette liquid guider is communicated with an inner cavity of the body; a vent groove is formed in a surface, far away from the body, of the oil guider. The cigarette liquid storage device provided by the invention is provided with the oil guider; cigarette liquid can be directly conducted to an atomization component through the oil guider; the oil guider can be integrally molded with the body, and can be also fixed in ways of inlaying and the like; the cigarette liquid storage device is simple in structure and is convenient to use; the electronic cigarette atomizer which is provided by the invention adopts an ultrasonic atomization component, is high in capacity usage ratio, and solves a problem that the cigarette liquid heated by an existing heating wire easily generates a burnt smell and causes that a smoking taste becomes poor; meanwhile, the surface of the oil guider is provided with the vent groove which can not only allow a gas to pass through, but also can avoid a phenomenon of liquid leakage caused by too large contact area between a fluid guider and the ultrasonic atomization component; the cigarette liquid storage device, the electronic cigarette atomizer and the electronic cigarette are simple and exquisite in structure, and are convenient to mount and dismount.

The invention discloses a convenient-to-adjust cable winding device for municipal engineering. The device comprises a bottom substrate, and a vertical supporting rod frame is arranged on the upper endsurface of the bottom substrate, a supporting rotating cross tube is rotationally installed at the top end of the supporting rod frame, and the top ends of the connecting rods are hinged to the lowerside ends of the arc top plates which are close to each other, an output shaft of an adjusting motor is provided with a driving gear, a rotating gear is arranged at the left end shaft section of an adjusting screw rod shaft, the rotating gear is meshed with the driving gear, a sliding transverse screw rod is arranged on the fixing base, the lower end of a sliding spiral sleeve is connected with the upper end face of a bottom base plate through a limiting mechanism, a transmission vertical shaft is further arranged on one side of the supporting rod frame, and a transmission bevel gear is arranged on the top end of the transmission vertical shaft and the output shaft of a winding motor. The winding device is simple in structure, the cables are orderly wound, winding is avoided, disassemblyand installation of the winding drum body are facilitated, and winding device is suitable for cylinder bodies with different diameters, is convenient to operate and is worthy of popularization.

The invention discloses a tooth pin, an excavation tooth component and an excavating machine, wherein the excavation tooth component comprises a bucket tooth, a toothholder and a connecting component; the bucket tooth and the toothholder are connected through the connecting component; the connecting component comprises the tooth pin and a block pin; pin holes that can accommodate the tooth pin are formed on the bucket tooth and the toothholder; a clamping groove and a guide groove are formed on the tooth pin; the clamping groove extends in the circumferential direction of the tooth pin; the guide groove integrally extends in the axial direction of the tooth pin from the clamping groove to one end of the tooth pin; the block pin is arranged on the toothholder; and the block pin is matched with the clamping groove so as to limit the axial movement of the tooth pin. The clamping groove and the guide groove both extending in the circumferential direction of the tooth pin are formed on the tooth pin, the block pin is arranged on the toothholder, the clamping groove formed on the tooth pin and the block pin can enter matching positions conveniently due to the adoption of the guide groove, the clamping groove and the block pin are matched so as to achieve the firm connection of the bucket tooth and the toothholder, the wearing resistance of the tooth pin is improved, and the bucket tooth and the toothholder can be disassembled and mounted conveniently.

The invention discloses a device for performing incremental launching construction on a bridge by using multi-roller sliding ways and a construction method thereof. The device comprises a drawing part and a sliding part, wherein the drawing part comprises jack reaction supports, centre hole jacks, steel stranded wires, fixed end clampers, steel box girder reaction seats and an oil pump; the jack reaction supports are fixed on two sides at a predetermined position of a steel box girder of a structural pier; the centre hole jacks are arranged on the jack reaction supports; one end of each steel stranded wire is fixed with corresponding centre hole jack, while the other end is fixed on the corresponding steel box girder reaction seat through the corresponding fixed end clamper; and the sliding part comprises the multi-roller sliding ways fixed on the structural pier and a temporary pier in pairs, and further comprises a railway foundation and a steel guide way which are paved on a platform foundation, and a girder-transporting track run on the steel guide way. The device utilizes the mechanical characteristics of a roller structure so as to reduce requirements on the longitudinal rigidity of the temporary pier, satisfying needs on the climbing of vertical curves in the incremental launching process and greatly accelerating the incremental launching construction process.

The invention discloses a frequency-division multiplexing (FDM)-based three-dimensional (3D) printer, comprising a frame, a base, an X-axis mobile system, a Z-axis mobile system and a printing device, wherein the printing device is connected with the X-axis mobile system; the X-axis mobile system is connected with the Z-axis mobile system; the Z-axis mobile system is connected with a guide rail of an upright post; a power supply and a controller are arranged on the base; the controller is connected with the Z-axis mobile system; the Z-axis mobile system comprises a third numerical control motor, a left screw and a right screw, a Z-axis fixed base and a limit switch; the left screw and the right screw are respectively arranged at the outer sides of a left upright post and a right upright post; the third numerical control motor is connected with the lower ends of the screws; the screws are connected with screw nuts; the screw nuts are connected with the Z-axis fixed base; the Z-axis fixed base is connected with the X-axis mobile system; a fixed base through hole is formed in the Z-axis fixed base; the left upright post and the right upright post pass through the fixed base through hole; the bearing is matched with the guide rail of the upright post. Thus, the FDM-based 3D printer is simple and compact in structure, small in volume and low in manufacturing cost.

The invention discloses a detachable long bone reduction robot. The detachable long bone reduction robot comprises a fixing mechanism and a reduction mechanism which are connected with or separated from each other, wherein the fixing mechanism comprises two groups of same fixing units which are connected with or separated from each other via two same connecting plates (1); the reduction mechanism is provided with a small annular platform (11), a large annular platform (12), twelve universal hinges (13) and six driving rods (14); the small annular platform (11) is connected with a bottom plate (2) and the universal hinges (13); the universal hinges (13) are connected with the driving rods (14); the universal hinges (13) are connected with the large annular platform (12); the large annular platform (12) is connected with the bottom plate (2). Due to the adoption of a parallel mechanism of six degrees of freedom, the detachable long bone reduction robot has the advantages of high accuracy, high loading capacity, high rigidity, compact structure and the like; the detachable long bone reduction robot is applied to long bone fracture reduction, is used for replacing doctor operation, and contributes to increasing the reduction accuracy, reducing operation wounds and lowering the probability of operative infection.

The invention relates to a multifunctional photoelectric detection instrument and a target position observing and determining method implemented by the same. The multifunctional photoelectric detection instrument comprises refrigerating infrared sensors, a laser range finder, a visible light channel, a GPS (global positioning system) module, a magnetic compass, a comprehensive information processing unit, a power module and a control panel, the comprehensive information processing unit is respectively connected with the refrigerating infrared sensors, the laser range finder, the GPS module, the magnetic compass, the display module and the control panel, and the visible light channel is connected onto the laser range finder. The method includes methods for observing a target via the visible light channel, a method for observing the target and determining target direction via the refrigerating infrared sensor and a method for automatically solving coordinates of the target position. The multifunctional photoelectric detection instrument and the target position observing and determining method have the advantages that the target is detected and positioned by a single person, and images, the direction, the distance and position information of the target are accurately provided in real time. Besides, the various sensors are integrated, a miniaturization design is adopted, portability is high, and single-person detection capacity and information acquisition capacity are improved.

Disclosed are a block type wall system assembled by hoisting and a construction method thereof. Multiple prefabricated wall board blocks are assembled into a whole, each prefabricated wall board block is provided with a reinforcing mesh concrete layer and a heat insulation layer outside in sequentially, the reinforcing mesh concrete layer consists of a structural layer and an outer surface layer disposed on the outer surface of the structural layer, four edges of the outer surface layer are protruded from four edges of the structural layer, the lower surface of the structural layer is provided with inner reinforcing bar holes corresponding to vertical long reinforcing bars on the lower adjacent prefabricated wall board block, and the heat insulation layer comprises external nonorganic boards, internal nonorganic boards, vertical nonorganic rib plates and fireproof heat insulation rock wool. The wall system is light in weight, simple in structure, convenient in installation and capable of realizing industrialized production. The wall system utilizes the external wall and internal heat insulation structure, the specially-made heat insulation layer and the concrete structural layer are connected quite closely and tightly, and the heat insulation layer is located on the innermost side, so that the probability of wetting due to seepage is reduced greatly.

The invention discloses an angle-adjustable multi-nozzle device with lifting devices. The angle-adjustable multi-nozzle device comprises a main connecting pipe and two lifting blocks. Two ends of the main connecting pipes are hinged onto the lifting blocks, the two lifting blocks are arranged on corresponding lifting screws in a screw joint manner, the lower ends of the lifting screws are hinged onto a main bottom plate, a moving straight slot is formed in the middle of the main bottom plate, transmission gears are fixed to the lower ends of the lifting screws, lifting motors are fixed to two ends of the main bottom plate, lifting gears are fixed onto output shafts of the lifting motors, and the transmission gears are meshed with the lifting gears. The angle-adjustable multi-nozzle device has the advantages that spray angles and the positions of nozzle pipes of the angle-adjustable multi-nozzle device can be adjusted, so that different spray coating requirements can be met; the nozzle pipes are convenient to mount, detach and clean, various components can be detached, replacement of components and parts can be facilitated, and accordingly the integral angle-adjustable multi-nozzle device does not need to be integrally replaced and is quite convenient.

A scooter with variable wheel configuration capable of being configured from a two-wheeled vehicle to a three-wheeled vehicle and vice-versa, according to requirement, is provided. The scooter includes: a frame for supporting and carrying a rider or a passenger and containing a battery and a controller; a steering assembly mounted on the front of the frame to pivot in left and right directions for steering, the steering assembly having a lower portion to which a front wheel is rotatably mounted and an upper portion provided with a handgrip for a rider to steer, a brake lever, an actuator control lever, and a throttle grip; a mount formed at a rear end of the frame in one-piece, the mount having a first mounting portion on one end and a second mounting portion on the other end; a first driving unit detachably mounted on the first mounting portion of the mount for a two-wheeled configuration or on the second mounting portion of the mount for a three-wheeled configuration; and a second driving unit detachably mounted to the first mounting portion and connected to the first driving unit for the three-wheeled configuration.

The invention provides a method and device for detecting the rotation angle of a vehicle steering wheel based on an image, and belongs to the technical field of automobiles. The steering wheel is marked, and then a marking image is obtained and identified, so that the rotation direction of the steering wheel and the rotation angle of the steering wheel are judged. By the method, the rotation angle of the steering wheel can be detected in real time, the detection result is accurate, and when the rotation angle of the steering wheel is more than one circle, the rotation angle of the steering wheel is also accurately obtained; by the device, sight of a driver for observing an instrument is not blocked; and the device is convenient to install and demount and strong in portability, and experimental requirements of conventional vehicles are met.

The invention discloses an inner-support-free double-wall locking mouth steel bushing box cofferdam construction method and an inner-support-free double-wall locking mouth steel bushing box cofferdam. Firstly, unit blocks are processed in a factory and then transported to a construction region to be spliced and formed piece by piece, the spliced unit blocks are wholly hoisted to a target pier position at the preset elevation through a large hoisting ship, then construction steps of sludge suction, tenon type locking mouth plugging, sand cushion layer filling, concrete bottom sealing, water suction, foundation clearing, steel protection barrel cutting, pile head removing, whole abutment installation and the like are performed, finally whole dismantling is performed for usage of the next pier position construction. The inner-support-free double-wall locking mouth steel bushing box cofferdam comprises a side plate, a blade foot and a joint and is characterized in that the cofferdam is of a detachable structure, a plane is partitioned into blocks, the blocks are connected in a mode that tenon type locking mouths are combined with bolts, and the inner side is not provided with an inner support. Therefore, the inner-support-free double-wall locking mouth steel bushing box cofferdam has the advantages of being small in construction difficulty, short in construction period, low in cost input, small in material consumption, high in repeated usage times, capable of being wholly recycled, safe, reliable and the like.

The invention discloses a lifting platform for shaft construction, comprising an operating platform, a lifter and an electrical control system, wherein the electrical control system controls the lifter to lift the operating platform via a working steel cable, the operating platform is composed of 6 to 12 trapezoid unit joints, at least four groups of anti-collision wall-against wheels are annularly arranged around the operating platform, and the bottom of the operating platform is circumferentially provided with at least four lead screw supporting components. The lifting platform for shaft construction has the advantages of strong construction adaptability, unlimited construction height, small floor area, good construction quality, high construction efficiency, great convenience of erection and disassembly, less labor, low labor intensity and the like. The trapezoid units, which are combined as required by construction, adapt to the construction requirement under different shaft situations, excellent convenience and flexibility are obtained during installation and usage, construction time is saved, and construction cost is lowered; the anti-collision wall-against wheels and the lead screw supporting components can be adjusted to adapt to the different requirements of shaft construction, and the lifting platform can conveniently and safely prevent the operating platform from shaking and becomes more stable and reliable as a whole.

The invention provides a three-coordinate galvanometer scanning laser processing head, which comprises an XY two-axis laser galvanometer system, a clamping mechanism, a Z-axis moving mechanism, a laser displacement sensor and a control system, wherein the Z-axis moving mechanism comprises a fixed part and a moving part, and the clamping mechanism is fixedly mounted on the fixed part of the Z-axis moving mechanism; and the XY two-axis laser galvanometer system and the laser displacement sensor are fixedly mounted on the moving part of the Z-axis moving mechanism, and the laser displacement sensor, the Z-axis moving mechanism and the XY two-axis laser galvanometer system are all electrically connected with the control system. The laser processing head has the function of dynamic focal length setting, and has an independent and compact structure; the laser processing head has the broach interface design of a standard numerically-controlled machine tool, which enables the laser processing head to be easily assembled for processing with commercialized multi-axis synchronous numerically-controlled machine tools of a three-axis type, a five-axis type, and the like; and technological flexibility is greatly enhanced, and a conventional multi-axis synchronous numerically-controlled machine tool can be conveniently changed into a galvanometer scanning laser processing machine tool with compatible functions, thereby the three-coordinate galvanometer scanning laser processing head has important practical value.

The invention provides a liquid-cooling radiator of a lamp. The liquid-cooling radiator comprises a lamp shell having an opening, a light source, a water-cooling block, a heat exchanger, a water tank, a water pump, and a water pipe. The inside of the lamp shell is divided into a closed first chamber and a second chamber having an opening, by a partition. The light source is disposed in the second chamber and fitted to the partition. The water-cooling block is disposed in the first chamber and fitted to the partition. The heat exchanger and the water tank are both fitted to the inner wall of the first chamber. The water pump is mounted on the water tank. The water pipe penetrates the water-cooling block and the heat exchanger; two ends of the water pipe are connected to the water tank. The heat exchanger is provided with radiating fins provided with a fan. The partition and the lamp shell are integrated; the first chamber is provided with a rear cover; the heat exchanger is mounted on the rear cover. The liquid-cooling radiator is high in radiating efficiency and easy to demount. The invention further provides the lamp comprising a reflector, a light-permeable plate and the radiator; the lamp is high in radiating performance; a high-power light source can be used; excessively high heat is prevented from burning out the light source or the circuit board and electronic components in the lamp.

The invention relates to a fume filer of a range hood, which comprises an inner mesh enclosure (1) and an outer mesh enclosure (2), wherein installation plane surfaces (11, 21) are arranged at the bottoms of both the inner mesh enclosure and the outer mesh enclosure; the outer mesh enclosure and the inner mesh enclosure are mutually independent; and the two installation plane surfaces are connected together through a connecting structure. The invention is characterized in that the connecting structure comprises a connecting piece (4) and a positioning sleeve cover (5); the connecting piece isprovided with a columnar part (41) which extends upward; a blocking part (42) which horizontally extends outward is arranged on the lower part of the columnar part; the columnar part moves upward andpenetrates through the installation plane surface of the inner mesh enclosure to be fixed with the positioning sleeve cover; installation holes (22) matched with the blocking part in shape and size are arranged on the installation plane surface of the outer mesh enclosure; and the blocking part penetrates downward out of the installation hole, and after the blocking part is rotated for an angle horizontally, the lower end surface of the installation plane surface of the outer mesh enclosure is placed on the upper end surface of the blocking part. When in disassembly, after the connecting piece is rotated to align the blocking part on the connecting piece with the installation hole, the outer mesh enclosure can be detached easily relative to the inner mesh enclosure.

The invention discloses an agricultural irrigation engineering hydraulic engineering pipe convenient to install. The agricultural irrigation engineering hydraulic engineering pipe comprises a first pipe and a second pipe which are arranged side by side, a first annular protruding block is arranged on the side wall of the side, close to the second pipe, of the first pipe, a second annular protruding block matched with the first annular protruding block is arranged on the side wall of the side, close to the first pipe, of the second pipe, two grooves are symmetrically arranged in the second annular protruding block, openings of the two grooves are arranged back to back, clamping blocks are connected to the inner walls of the grooves through first springs, clamping grooves matched with the clamping blocks are arranged on the side wall of the first annular protruding block, vertically-arranged sliding rods are arranged in the clamping grooves and penetrate the clamping groves, vertically-arranged first sliding grooves are symmetrically arranged on the inner walls of the two sides of the clamping grooves, and first sliding blocks are connected to the inner wall of the side, close to thesecond annular protruding block, of the first annular protruding block. The agricultural irrigation engineering hydraulic engineering pipe is easy, quick and convenient to mount and dismount, time issaved, and the working efficiency is improved.

The invention provides a volatile flux measuring device and method for volatile organic compounds of a pollution site. The device comprises a flux test cavity, wherein the flux test cavity is in a cylindrical structure with a closed top and an open bottom; a gas mixer, a power supply box, a pressure meter and a thermometer are connected with the external part of the flux test cavity; a plurality of air inlets are formed on the gas mixer, and the air inlets are connected with sampling holes, which are distributed all over the flux test cavity, through sampling tubes; an air outlet of the gas mixer is sequentially connected with an adjusting valve, a flowmeter, a sample collecting tube and a sampling pump through pipelines; and the measurement end of the pressure meter and the measurement end of the thermometer extend to the inside of the flux test cavity. The device and method can directly measure the volatile flux of volatile organic compounds in the site on site, and has the advantages of simple structure, accurate detection result and low cost, and is convenient to mount.