48results about How to "No mechanical noise" patented technology

The invention relates to pumping unit intelligent multiplier controller. It mainly includes light and strong current parts. Its feature is that dynamic liquid level transducer and polished rod load and displacement transducer are connected with the CPU to realize exact closed-loop control for the pumping well. The light current part includes main control CUP and controlled CPU; the strong current part includes energy feedback, stand by power frequency, and power frequency conversion interlocking parts. The invention can increase pumping well system efficiency, realize its energy saving and consumption reducing, increase both production and income, input-output ratio, and economic benefit, can be suited for oil field electric network specificity and pumping well variability.

The invention relates to an intelligent monitoring device for a screw pump well, which is a high-performance industrial control device combined with optical, mechanical and electronic integration and electronic information and communication technology, and is mainly used for intelligently monitoring oil extraction of the screw pump well in oil field. The intelligent monitoring device mainly comprises a light current part and a strong current part, and is characterized in that the intelligent monitoring device takes connection of parts such as a sensor capable of measuring dynamic liquid level of the screw pump well on line, a sensor capable of measuring the torque and axial force of the screw pump well on line, a sensor capable of measuring electricity using parameters such as running current constantly and a remote wireless communication device and the like with a CPU as a core to realize the effective measurement and intelligent closed-loop control of the screw pump well. The intelligent monitoring device can avoid pump burning phenomenon of a screw pump caused by evacuation through accurate measurement and effective monitoring and dispatching, scientifically make a hot washing system according to wax deposition cause and the like to avoid phenomena such as rod breakage and the like, find eccentric wear problem in time to prolong pump detection cycle, and optimize design of the screw pump well to reasonably determine working parameters and reduce potential safety hazard and the like.

The invention provides a light momentum-excited nano beam microparticle mass measuring device which comprises a sine-like light momentum excitation generation device and a micro mass detection device; monochromatic lights of an upper laser and a lower laser respectively irradiate light transmission holes of an upper disc and a lower disc; a driving motor drives a shaft to rotate, sine-like distribution light momentum excitation can be produced, and then a nano beam is excited to vibrate; the nano beam produces forced vibration under the action of alternating light momentum excitation, and resistance value of a resistor layer pasted at the root of the nano beam is changed; the signal can be output by utilizing a Wheatstone bridge circuit; and after amplification is carried out by virtue of a signal amplifier, spectral analysis can be carried out, vibration information images in a time domain and a frequency domain are obtained, and vibration parameters such as vibration amplitude and vibration frequency are obtained. Rotating speeds of the light momentum excitation generation device and the driving motor are changed, and light momentum excitation frequency is changed along with the rotating speeds; and when the nano beam resonates, an output current signal value is maximum, the resonant vibration frequency of the nano beam can be detected by measuring the voltage change peak, added mass adhered at the tail end of the nano beam is obtained by calculating, and thus the aim of measuring the mass of a nano-micro particle is achieved.

The invention relates to a full-automatic drawing machine, and aims to provide the full-automatic drawing machine which is high in working efficiency, is low in production cost, and is intelligent. The full-automatic drawing machine comprises a base, the base is provided with a drawbench, and the drawbench comprises a control cabinet, and is provided with a machine tool drag chain, a clamping device, a servo motor and a lubricating device, wherein the control cabinet is connected with the lubricating device; the drawbench is provided with a pull chain fixing groove; an original point sensor and a terminal point sensor are arranged above the pull chain fixing groove; the original point sensor is positioned on the front end of a rack; the terminal point sensor is positioned on the terminal end of the rack; the rack is arranged above the terminal point sensor; a first positioning table and a second positioning table are arranged above the rack; the first positioning table is positioned on the front end of the rack; the second positioning table is positioned on the terminal end of the rack; a first track is arranged above the rack, and is positioned above the first positioning table and the second positioning table; a first slide table is arranged above the first track; a base connecting plate is arranged above the first slide table.

Disclosed in the invention is a brushless direct-current motor simulator. A winding subsystem simulator simulates a winding resistor, an inducer and a back electromotive force; an electromagnetic subsystem simulator simulates an electromagnetic moment of a brushless direct-current motor; a load characteristic simulator simulates a load moment; a mechanical subsystem simulator simulates a mechanical characteristic of the brushless direct-current motor; a magnetic flux density simulator simulates a distribution characteristic of the magnetic flux density of the rotor of the brushless direct-current motor; a back electromotive force subsystem simulator simulates back electromotive forces of three-phase windings of the brushless direct-current motor; and a position sensor simulator simulates an output signal of a switch hall sensor. According to the invention, the electronic load of the brushless direct-current motor body can be replaced; and the brushless direct-current motor simulator has the real electrical and mechanical characteristics of the brushless direct-current motor; important parameters like a driving voltage, a driving current, a back electromotive force and an electromagnetic moment and the like can be monitored; information including commutation errors and current abnormality and the like can be recorded; and the simulator has the fault self-diagnosis capability and the processing capability.

The invention relates to a simulator for a permanent magnet alternating-current generator. The simulator is used for testing hardware of an aero-engine in a loop, and comprises a permanent magnet alternating-current generator model machine module, a permanent magnet alternating-current generator controller module, and a permanent magnet alternating-current generator actuator module. The permanent magnet alternating-current generator model machine module is provided with a permanent magnet alternating-current generator model and a fault model, wherein the permanent magnet alternating-current generator model and the fault model are real-time mathematical models, and the module outputs a first output signal after processing a first input signal. The first output signal and a second input signal serve as the input signals of the permanent magnet alternating-current generator controller module, and the permanent magnet alternating-current generator controller module outputs a first control signal after processing the input signals. The permanent magnet alternating-current generator actuator module outputs a corresponding second output signal according to the first control signal and outputs a feedback signal used for closed-loop control of the permanent magnet alternating-current generator controller module. The second output signal is the output signal, simulated by the simulator for the permanent magnet alternating-current generator, of the permanent magnet alternating-current generator.

The invention discloses a three-phase bridge PWM converter. The three-phase bridge PWM converter comprises a first bridge arm circuit, a second bridge arm circuit and a third bridge arm circuit which have the same connecting mode. One end of each bridge arm circuit is connected with the positive electrode of a capacitor, and the other end of each bridge arm circuit is connected with the negative electrode of the capacitor. Each bridge arm circuit comprises two IGBTs which are in series connection, and each IGBT is in parallel connection with a diode. The invention further discloses an active power filter which is provided with the three-phase bridge PWM converter. By means of the three-phase bridge PWM converter and the active power filter formed by the same, harmonic waves and idle work with the variable frequency and size can be compensated, the defect of the active filter can be overcome, and the compensation characteristic better than that of the active filter can be obtained.

The invention discloses a thermal management system for automotive batteries, which relates to a thermal management system, and is designed through combining the intelligent control and natural-convection recirculation technology of controlled element computers and a heat transfer mode principle. The system disclosed by the invention is low in power consumption and small in volume, and does not produce mechanical noises; and by using the system, a battery system is always in a good working environment, thereby prolonging the service life of the battery system, ensuring the safety of the battery system, and reducing the application cost of the battery system.

The invention discloses a sliding bearing with an aligning function. The bearing comprises a shaft sleeve and a spherical tile which forms a circumferential sliding friction pair with the shaft sleeve, wherein the angle range of the spherical tile is 180-270 degrees, the opening end below the spherical tile is connected with a center, the included angle of a vertical central line is 30-90 degrees,the spherical tile is installed in a spherical seat, the spherical seat is installed in a bearing hole of a bearing block, in the bearing hole, the two ends of an opening of the spherical seat are both provided with stop blocks used for limiting the spherical seat to move in the circumferential direction, the two ends of the opening of the spherical tile are both fixedly provided with top blocks,the top blocks are in line contact with the stop blocks, a sliding friction pair is formed by the stop blocks and the top blocks, the surfaces of the top blocks which are in contact with the stop blocks are sliding surfaces, and on the surface of the end surface of the shaft sleeve is plane, center lines of the sliding surfaces of the two top blocks are perpendicular to each other. According to the spherical sliding bearing with the aligning function, not only all the advantages of an existing sliding bearing are achieved, but also the advantages of being simple in manufacturing and processing, low in cost, long in service life and the like are also achieved, larger loads can be borne, lower rotating speeds is achieved, so that equipment upsizing is not restricted by the bearing.

The invention discloses a belt type conveyor capable of realizing magnetic levitation by a conveying belt through a magnetic attraction force, belonging to the technical field of a material continuous conveying device. The conveyor belt and a magnetic attraction device above the conveyor belt both are magnetic; the magnetic attraction device is used for replacing a common support roller (a support device); on the basis of the mutual attraction of opposite poles of the magnet, a magnetic levitation set is formed; an auxiliary roller is used for supplying a support force to the conveyor belt when the attraction force is insufficient. When the belt type conveyor is in operation, the conveyor belt is in a noncontact magnetic levitation state and has the characteristics of zero friction, zero abrasion, zero mechanical noise, low power consumption, and the like, so that the energy consumption during the operation of the belt type conveyor can be greatly reduced, the maintenance cost is saved and the overhauling workload is reduced.

The invention provides a magnetic suspension direct current generator set, and relates to the field of generators. A magnetic suspension train head pulls each armature iron-core coil winding carriages to run on a track, and a multiple groups of S pole and N pole magnets are arranged on both sides of the tack. When the magnetic suspension train starts, coils of each armature iron-core coil winding carriage cut magnetic field lines, alternating electromotive force generated by induction in the armature coils forms direct current, and the direct current generated by each armature iron-core coil winding is outputted through a power outputting line. The magnetic suspension direct current generator set of the invention has the advantages of adoption of a magnetic suspension direct current generator, high speed, no lubrication, no wear, no mechanical noise, no need to seal, high precision, long service life, non-pollution, no restriction to natural conditions, and the like. The magnetic suspension direct current generator set is applicable to generating power in different regions.

The invention discloses a wearable input device based on optical image capture and processing. The device comprises gloves, an annular image capture device and a computer, wherein the annular image capture device comprises an annular band; a capture box is arranged on the upper part of one end of the annular band; a central processing unit, a distance sensor, a micro camera and a wireless transmission module are arranged in the capture box; and the annular image capture device is connected with the computer through the wireless transmission module. The invention also provides a wearable inputmethod based on the optical image capture and processing. The method comprises the following steps that: the annular image capture device approaches to a color lump to detect a distance between the annular image capture device and the color lump; the central processing unit judges whether the detected data exceeds a set distance threshold value or not; the camera transmits the image to the centralprocessing unit; the image is sent to the computer through the wireless transmission module; and the computer receives the image, converts the image into keyboard information and a mouse instructionand inputs the keyboard information and the mouse instruction to the computer. By use of the device and the method, the input function of the wearable input device is realized.

The invention discloses a mechanical anti-falling device of mechanical parking equipment, which belongs to the technical field of mechanical three-dimensional parking equipment. The mechanical anti-falling device comprises a hook (1), a vehicle carrying plate, and a safety device, wherein the hook (1) is fixed on a transverse moving bracket; the safety device is arranged at a hoisting point of the vehicle carrying plate; the safety device comprises a shell (6), a hoisting ring (2) and a movable rod (3); one end of the hoisting ring (2) is fixed on the shell (6) and can rotate around a fixed point; one end of the movable rod (3) stretches out of the shell (6), and a sling (7) is fixed on the stretched out part of the movable rod (3); the other end of the movable rod (3) is connected with aspring A (4) and a spring B (5); the other end of the spring A (4) is connected with the hoisting ring (2); and the other end of the spring B (5) is connected with the shell (6). The mechanical anti-falling device of the mechanical parking equipment has the advantages of needing no power supply, simple structure, steady work, low noise and low cost.

The present invention relates to a portable therapeutic device for tympanic membrane. It includes the following several portions: earplug, receiver communicated with said earplug, connection tube connected with said receiver and starting ball connected with the connection tube, and the starting ball can be pressed manually.

The invention discloses an automatic disk replacement transmission device for an I-shaped wheel of a take-up machine. The automatic disk replacement transmission device comprises a wheel feeding mechanism, a take-up mechanism and a wheel unloading mechanism, wherein the wheel feeding mechanism is composed of a push plate cylinder and a wheel feeding base; one end of the push plate cylinder is fixed to the wheel feeding base, and the other end of the push plate cylinder is connected with a push plate; one end of the push plate is installed at the top end of the wheel feeding base and makes contact with an empty-disk conveying belt which is horizontally installed at the top end of the wheel feeding base; the take-up mechanism comprises an inclined workbench and an overturning plate; one end of the overturning plate is connected with the bottom end of the inclined workbench, and the other end of the overturning plate is fixed to the top end of a plate overturning cylinder; the top end of the inclined workbench is installed on a take-up base; the wheel unloading mechanism comprises a full-disk conveying belt and a wheel unloading base, and the conveying belt is installed on the wheel unloading base; a baffle is installed at the top end of the wheel unloading base; and a limiting plate is arranged on the top of the end, close to the wheel unloading mechanism, of the take-up base.

The invention relates to the field of submarine propelling systems, in particular to a magnetofluid vector control system based on a superconducting magnetic field. The magnetofluid vector control system comprises five-way seawater ducts, magnetic poles, electrodes, a large power direct current electric generator, fan blades, a scraper, a drum type gear, a cat ear type cavity and an isolation aperture plate, the five-way seawater ducts are horizontally arranged at the head and the tail of a submarine respectively, a pair of magnetic poles and a pair of electrodes are arranged on the portion, adjacent to a duct opening, of each duct, 16 trapezoidal flow deflectors are uniformly arranged at the portion, on the duct openings, at the outer side of fixed frames of the fan blades, and all the electrodes in the ducts are electrically connected with a central control system. The magnetofluid vector control system is reasonable in structural design, through the magnetofluid vector control system in a superconducting magnetic field environment, no mechanical noise is generated, an electromagnetic system drives seawater in the ducts to generate power, a submarine body can make a turn, turn round or laterally move, forward and back up at the original position, the propelling system is used on the submarine, and when cooperating with a drainage system, the propelling system can also achievesudden sinking and floating, handle complex sea conditions and prevent a bluff.

The present invention provides a chip-level ultra-miniature refrigerator for an uncooled infrared detector. The chip-level ultra-miniature refrigerator comprises an outer-layer package layer structureand an inner-layer refrigerator structure; the outer-layer package layer structure comprises a vacuum package housing, an anti-radiation layer and a radiation layer, and the top portion of the vacuumpackage housing is provided with an infrared sensitive window; the inner-layer refrigerator structure comprises an upper-layer structure, a middle-layer structure and a lower-layer structure. The chip-level ultra-miniature refrigerator performs heating and cooling of a nano-film thermoelectric layer to maintain a constant temperature so as to effectively block the heat exchange between a supportstructure and an external environment through a substrate, and a heat insulation layer is laid at the bottom portion of the substrate to further inhibit the heat conduction of the external environment. An annular cantilever beam and the support structure further avoid heat conduction, the heat insulation layer is arranged to further inhibit the internal heat conduction and exchange so as to achieve heat insulation between the infrared detector and the external environment. The anti-radiation layer is deposited and grown to inhibit heat radiation, and a vacuum package method is employed to avoid heat convection and exchange of the internal portion and the external portion.

The invention relates to an electronic switch circuit, comprising the following components: a power isolation circuit, a signal isolation circuit, a control circuit and a switch circuit, wherein a power supply is separately input to the switch circuit and the control circuit after being processed by the power isolation circuit; and a control signal is input to the control circuit after being processed by the signal isolation circuit, and the switch circuit is disconnected or closed under the control of the control circuit to achieve the function of an electronic switch. According to the electronic switch circuit disclosed by the embodiment of the invention, the interaction between the control signal and the controlled power supply or signals can be avoided; and the electronic switch circuit is long in service life, does not have mechanical noises, and is fast in response.

The invention discloses an electromagnetic punching machine. The electromagnetic punching machine comprises a workbench and a machine body arranged above the workbench. The machine body is sequentially provided with a control system and a linear motor which comprises primary motor bodies and a secondary motor body. Guide posts are arranged on the two sides of the motor correspondingly, and a ball is installed in each guide post. A mould frame is arranged below the motor. The electromagnetic punching machine is simple in structure, convenient to operate, small in occupied space and stable in performance, so that not only is the production cost reduced, but also safe production can be ensured.

The invention relates to a motor, and concretely relates to a motor capable of rapidly stopping. The motor capable of rapidly stopping comprises a casing, an end cover, a rotor, a magnetic ring and ametal ring, the metal ring is made of a magnetic conductive material, the magnetic ring and the metal ring are close to each other and can generate magnetic force mutually, and a plurality of groovesare formed in the end face or the circumferential face, close to the magnetic ring, of the metal ring. A plurality of grooves are formed in the metal ring and annularly arranged at intervals in the circumferential direction of the metal ring, a plurality of magnetic poles are formed on the end face or the circumferential face, adjacent to the metal ring, of the magnetic ring, the number of the grooves is the approximate number or multiple of the number of the magnetic poles of the magnetic ring, and the magnetic poles are arranged in an N-pole and S-pole staggered mode in the circumferential direction of the magnetic ring. One of the two annular pieces of the magnetic ring and the metal ring is coaxially fixed with the rotor, and the other one of the two annular pieces is fixed with the casing or the end cover. Compared with a motor using a conventional mechanical damping structure, the motor provided by the invention is higher in efficiency during normal operation.

The invention provides a vibration reduction compressor comprising a cylinder body, an adjusting screw plug and a positioning gear. A cylinder hole is formed in the cylinder body, and a high-pressure vibration reduction cavity extending from the end face of the positioning gear to the interior of the positioning gear is formed in the end, close to the adjusting screw plug, of the positioning gear. A throttling device communicating with the cylinder hole and the high-pressure vibration reduction cavity and making gas in the cylinder hole enter the high-pressure vibration reduction cavity is arranged in the cylinder body. By forming the high-pressure vibration reduction cavity and arranging the throttling device, one gas suction and exhaust process is achieved every time a piston of the compressor runs by a circle. During exhaust, most of the high-pressure gas mixed with high-pressure refrigerant and oil in the cylinder hole is exhausted through an exhaust port, a small part of the gas enters the high-pressure vibration reduction cavity of the positioning gear through the throttling device, and therefore the pressure of the high-pressure vibration reduction cavity is gradually increased, the positioning gear can be pushed to be far away from the adjusting screw plug, and the buffering and vibration reduction effects are achieved. No mechanical noise can be generated, and therefore, the noise reduction effect is achieved.

The invention discloses a bamboo charcoal air cleaner with semiconductor temperature difference microcirculation power, wherein three sides of the casing of a rack are closed, and one side of the casing is open; the middle upper part of the rack is provided with an upper activated carbon fiber sticky filter layer, the middle lower part of the rack is provided with a lower activated carbon fiber sticky filter layer; and a nano intercalation bamboo charcoal particle layer and a semiconductor temperature difference microcirculation power device are arranged between the upper activated carbon fiber sticky filter layer and the lower activated carbon fiber sticky filter layer. In the invention, a filter core can be replaced conveniently so as to be beneficial to prolonging the service life of the machine; the selected nano intercalation bamboo charcoal material has self-cleaning property and good adsorption performance; the semiconductor temperature difference microcirculation power device is utilized to replace a fan to enable air to flow, air flow quality can be controlled through semiconductor temperature difference without mechanical noise; the adsorption capability of the nano intercalation bamboo charcoal material layer can be optimum through air microcirculation circulation; and the energy consumption of the semiconductor temperature difference microcirculation power device is far less than the fan with the same performance, thereby being beneficial for saving energy and reducing energy consumption.

The invention relates to a full-automatic drawing machine, and aims to provide the full-automatic drawing machine which is high in working efficiency, is low in production cost, and is intelligent. The full-automatic drawing machine comprises a base, the base is provided with a drawbench, and the drawbench comprises a control cabinet, and is provided with a machine tool drag chain, a clamping device, a servo motor and a lubricating device, wherein the control cabinet is connected with the lubricating device; the drawbench is provided with a pull chain fixing groove; an original point sensor and a terminal point sensor are arranged above the pull chain fixing groove; the original point sensor is positioned on the front end of a rack; the terminal point sensor is positioned on the terminal end of the rack; the rack is arranged above the terminal point sensor; a first positioning table and a second positioning table are arranged above the rack; the first positioning table is positioned on the front end of the rack; the second positioning table is positioned on the terminal end of the rack; a first track is arranged above the rack, and is positioned above the first positioning table and the second positioning table; a first slide table is arranged above the first track; a base connecting plate is arranged above the first slide table.

The invention provides a chip-level ultra-miniature refrigerator for an unrefrigerated infrared detector, which includes an outer packaging layer structure and an inner layer refrigerator structure. The outer packaging layer structure includes a vacuum packaging shell, a radiation protection layer, a heat dissipation layer, the top of the vacuum package shell is provided with an infrared sensitive window; the inner layer refrigerator structure includes an upper layer structure, a middle layer structure and a lower layer structure. The present invention maintains a constant temperature by heating and cooling the nano-film thermoelectric layer, effectively blocking the heat exchange between the support structure and the external environment through the base, and laying a heat insulation layer on the bottom of the base to further inhibit the heat conduction of the external environment . The ring-shaped cantilever beam setting and the supporting structure further prevent heat conduction, while the heat insulation layer setting further inhibits the internal heat conduction exchange, and realizes the thermal isolation of the infrared detector from the external environment. At the same time, heat radiation is suppressed by depositing and growing a radiation-proof layer, and vacuum packaging is used to prevent internal and external heat convection exchange.

The invention discloses a double helix pipe reactive tank ore pulp gas circulation device which comprises a tank body. An air pipe is arranged in the tank body, helix pipes are arranged on the two sides of the air pipe, the lower ends of the helix pipes are connected with a collecting cover, circulation bends are arranged above the helix pipes, the height of the lower end of the air pipe is smaller than that of the lower ends of the helix pipes, the lower end of the air pipe is arranged at the upper portion of the collecting cover, the upper end of the air pipe is connected with an air compressor through a pipe, the pipe is provided with a gas flowmeter and a regulating valve, and the number of the helix pipes is two. The double helix pipe reactive tank ore pulp gas circulation device hasthe advantages that compression air is supplied in so that ore pulp flows in a circulated manner, activated carbon, oxygen and an agent are driven to be sufficiently mixed, losses of the activated carbon are reduced, the oxygen is supplemented, and the leaching efficiency is improved. The equipment is simple in structure, convenient to maintain and replace and free of mechanical noise.

The invention discloses a negative ion light-radiation constant temperature system. The negative ion light-radiation constant temperature system mainly comprises a refrigerating (heating) working machine arranged outside a building, a radiating body arranged in an internal space of the building and has a negative ion generating function, and a wall body light-radiation composite structure in the internal space of the building. The negative ion light-radiation constant temperature system has the functions of killing harmful pathogenic bacteria and removing the pollution from hazardous substances in a working process and plays an air-conditioning role at the same time; the negative ion light-radiation constant temperature system can substitute for a traditional indoor fan system, changes a traditional cross-ventilation heat exchange manner, is free of mechanical noise and cold and heat cross-ventilation air, and is used for eliminating the discomfort caused by a traditional air conditioner to a human body. The negative ion light-radiation constant temperature system can achieve a purpose of carrying out constant temperature adjustment on a specific space temperature within a short time, so that the human body in the specific space rapidly reaches an appropriate sensible temperature.

The invention discloses a three-phase thyristor power regulator. The regulator comprises an outer shell, a copper bar, a display operation screen, a circuit board, a centrifugal fan and a control wiring terminal; the copper bar and the circuit board are welded into the shell, the display operation screen is installed in the middle of a panel of the shell, the control wiring terminal is installed on the side face of the panel of the shell, the centrifugal fan is installed at the bottom of the shell, a heat emission hole is formed in the top of the shell, a PLC control module, an RS485 communication module, a display module, a thyristor and a temperature sensor are installed on a substrate of the circuit board, the substrate is connected with the control wiring terminal, the PLC control module is connected with the RS485 communication module, the display module, the thyristor, the temperature sensor and the centrifugal fan separately, the RS485 communication module is connected with thecontrol wiring terminal, the display module is connected with the display operation screen, and the thyristor is connected with the copper bar. The three-phase thyristor power regulator has the advantages of being high in efficiency, free of mechanical noise and abrasion, high in response speed, small in size, low in weight, slow to start, small in impact on a power grid and the like.

The invention discloses an urban sewage irrigation station which comprises a sewage input pool, a sewage irrigation pool, an overflow well and a drainage pipe. The drainage pipe comprises a first vertical pipe body, a middle pipe body and a second vertical pipe body which are sequentially communicated and arranged in a sealed mode. The first vertical pipe body is vertically arranged in the sewage irrigation pool, and the water inlet end of the first vertical pipe body is located below the water level of the sewage irrigation pool. The second vertical pipe body is vertically arranged in the overflow well, and the water outlet end of the second vertical pipe body is located below the water level of the overflow well. An overflow opening for allowing sewage to be drained is further formed in the overflow well, and the position of the overflow opening is lower than a lower opening of a water inlet sewage pipe and higher than the water inlet end of the first vertical pipe body. Due to the fact that the overflow opening is lower than a water inlet pipe of a sewage inlet pool, a siphonic effect is formed, after the drainage pipe is filled with air after air is completely exhausted, sewage in the sewage irrigation pool can be naturally drained into the overflow well from the drainage pipe and drained out through the overflow opening formed in the overflow well, and natural drainage can be achieved without exogenic action.