419results about How to "Solve complex structures" patented technology

The invention relates to a Mahjong tile conveying device of an automatic Mahjong machine. The problems that an existing Mahjong tile stacking device is high in manufacturing cost, complex in structure, high in failure rate and the like are solved. The Mahjong tile conveying device comprises a conveying belt and a driving wheel for driving the conveying belt to run. The conveying belt comprises a conveying section and a Mahjong tile carrying section. The Mahjong tile carrying section is lower than the conveying section, and the height difference between the Mahjong tile carrying section and the conveying section is larger than the thickness of Mahjong tiles, and the Mahjong tiles are conveyed to the Mahjong tile carrying section through the conveying section to be stacked. The Mahjong tile conveying device further comprises a Mahjong tile blocking plate for preventing the Mahjong tiles from falling out of the Mahjong tile carrying section.

Provided is a water inlet device capable of feeding detergents. The water inlet device capable of feeding detergents can feed detergents accurately and effectively, and metal parts are not corroded. The water inlet device capable of feeding detergents comprises a main channel (11), and a Venturi tube (7) is connected to the main channel (11), wherein the main channel (11) is connected with a main electromagnetic water inlet valve (1), and a flushing and liquid inlet channel (12) is connected in parallel with a water delivery channel in the direction of the inlet of the main electromagnetic water inlet valve; the flushing and liquid inlet channel (12) is connected with an electromagnetic flushing water inlet valve (2) and a liquid collection chamber (5) located in the direction of the outlet of the electromagnetic flushing water inlet valve (2), and an one-way valve A (3) and a detergent A box (4) which is arranged in the direction of the inlet of the one-way valve A (3) are connected to the portion, between the electromagnetic flushing water inlet valve (2) and the liquid collection chamber (5), of the flushing and liquid inlet channel (12) in a branch mode; a liquid outlet passage (14) is connected to a portion between the outlet of the liquid collection chamber and the negative pressure port of the Venturi tube, the liquid outlet passage is connected with a flow sensor (6), and the outlet of the main channel is connected to a wash bucket. The water inlet device capable of feeding detergents is used as a water inlet and detergent feeding device for a washing machine.

The invention discloses a radial line feed medium resonant antenna array. The radial line feed medium resonant antenna array comprises a surface-slotted radial line waveguide (1), a feed probe (2) and a medium resonant antenna array (3). The surface-slotted radial line waveguide (1) comprises an upper slotted metal plate (1a) and a lower metal bottom plate (1b); the feed probe is composed of a metal bar (2a) and a radio antenna terminal (2b) connected with the metal bar (2a) and is arranged on the axis of the surface-slotted radial line waveguide (1); one end of the radio antenna terminal (2b) extends out of the surface-slotted radial line waveguide (1); the medium resonant antenna array (3) is arranged right above the upper slotted metal plate (1a) and comprises a plurality of unit medium resonators. The radial line feed medium resonant antenna array achieves linear-polarized or circular-polarized electromagnetic radiation through a single-feed mode and meanwhile is simple in structure and high in gain and aperture efficiency.

The invention discloses a conveying device of a covered stent. The conveying device of the covered stent comprises a guiding head which is provided with a hollow cavity in the axial direction, a guiding wire pipe which is communicated with the hollow cavity, a protective sleeve, an external pipe and a fixing device, wherein one end of the guiding wire pipe is fixedly connected with the rear end of the guiding head; the protective sleeve is sleeved outside the external wall of the guiding wire pipe and is capable of moving along the axial direction of the guiding wire pipe; one end of the protective sleeve is connected with the rear end of the guiding head; the external pipe is sleeved outside the external wall of the guiding wire pipe and is capable of sliding along the axial direction of the guiding wire pipe; the external pipe is sleeved outside at least partial of the external wall of the protective sleeve; and the fixing device is sleeved outside the external wall of the guiding wire pipe and is capable of moving along the axial direction of the guiding wire pipe. The conveying device of the covered stent is characterized in that a groove is formed on the external wall of the fixing device; a portion of the groove, which corresponds to the covered stent, is inserted into the fixing device and the front end of the insertion portion and the rear end of the insertion portion abut against the wall of the groove; space for accommodating the inserted potion is formed between the protective sleeve and the guiding wire pipe; and a position on the fixing device, which is provided with the groove, is arranged in the protective sleeve. The conveying device of the covered stent is applicable to conveying the covered stent into a body and performing releasing during an operation.

The invention provides a shifting register unit, a driving method, a gate drive circuit and a display device and belongs to the technical field of display. The shifting register unit comprises an input module, a resetting module, a pull-up module, a pull-down module and a noise reduction module. The input module is used for outputting a first power source signal to an pull-up node; the resetting module is used for outputting a second power source signal to the pull-up node; the pull-up module, under the control of the pull-up node, outputs a first clock signal to an output end; the pull-down module, under the control of a second clock signal and the pull-up node, outputs a third power source signal or the second clock signal to a pull-down node; the noise reduction module is used for outputting the third power source signal to the pull-up node and the output end separately under the control of the pull-down node. The shifting register unit is simple in circuit structure and control process and solves the problem of complicated circuit structure of shifting register units in the prior art.

The invention relates to an optic travelling wave cavity enhanced laser raman gas concentration detection device. The device combines a cavity enhanced technology with a laser raman detection technology, and utilizes an optic traveling wave passive cavity; a single curved-surface annular internal reflector forms a high-fineness cavity, and a laser outgoing beam oblique incidence cavity enhanced principle is utilized, so that laser beam is reflected in the cavity for many times and is propagated in a travelling wave manner, the laser beam passes through gas to be detected in an area to generate raman scattering, raman scattered light is collected by a photoelectric detection component after being gathered with the laser beam through a filter plate, and the photoelectric detection component detects the raman frequency shift and the corresponding raman peak intensity of the characteristics of the gas to be detected to obtain the concentration of the gas to be detected. The detection device disclosed by the invention has the characteristics of simple structure, low requirements on mechanical location, good stability and high reliability; meanwhile, the anti-jamming performance of the detection device is improved; the detection device can measure on line in real time to increase the dynamic information of the process and can detect the concentration of nearly all gas, except inert gas; the sensitivity is high; the response speed is high and the response time is short.

A power battery module based on air, hot pipe and phase-change material coupled cooling belongs to power battery modules. Each cylinder of a trifolium-type sleeve of the power battery module is inside provided with a plurality of cylindrical cell individuals in serial connection, and all cylinder battery groups have same quantity of the cell individuals in serial connection, and are in parallel connection. The power battery module reasonably combines the advantages of air cooling, hot-pipe cooling and phase-change material cooling, a hot pipe exports heat in cell bottoms of which the heat radiation property is relatively bad, a fin is used to export heat in the phase-change material and the hot pipe, and air natural convection or forced convection cooling is reasonably employed for assisting heat radiation of the fin. The battery module is obvious in battery temperature-controlling effect, simple and compact in structure and convenient for mounting and dismounting, and a large battery group can be formed by connecting multiple modules. A plurality of the power battery modules can be properly combined and designed for being applied to various electric equipment driven by power batteries, and wide market prospect is provided.

The invention discloses a device and method for photo-catalytically degrading phenol-containing wastewater, and belongs to the technical field of industrial wastewater treatment. The device comprises a rotary disc reactor and a liquid storage tank, wherein the rotary disc reactor comprises a shell, a rotary disc, a rotary shaft, excitation light sources, a liquid inlet tube and a liquid outlet tube, wherein the rotary disc is horizontally arranged in the center of the shell, the excitation light sources are respectively arranged above and below the rotary disc, the rotary disc is driven to rotate through the rotary shaft, and the rotary shaft is controlled by a motor and a frequency converter. The rotary disc reactor and the liquid storage tank form a circulating system. The photo-catalytically degrading method comprises the following steps: (1) preparing a loaded photocatalyst; and (2) photo-catalytically degrading organic wastewater. According to the device and method disclosed by the invention, catalysts are simultaneously loaded on the inner walls of the rotary disc and the shell of the reactor, and the excitation light sources are installed above and below the rotary disc, so that the photocatalytic reaction time is prolonged, the mass transferring effect is intensified, and the efficiency of light energy utilization is improved. According to the device and method disclosed by the invention, the defects that the catalyst is hard to separate, low in efficiency of light energy utilization, complex in structure of photocatalytic reactor, difficult to apply industrially and the like in an existing photocatalysis technology are overcome.

The mechanically stirring method of preparing semi-solid Al20Sn slurry utilizes one rotating double-sided double arc blade device moving vertically to produce circumferential motion, inward motion and upward motion of the Al20Sn melt to break the initial solid phase of the melt, stir the melt and arrest the centrifugal motion and precipitating motion of the liquid Sn drop. The rotating direction of the blades is changed alternately. The present invention has excellent stirring effect so as to form homogeneously distributed semi-solid Al20Sn slurry in apparatus in simple structure.

The invention discloses a device and a method for forming a surface coating with adoption of grid control and plasma-initiated gas-phase polymerization, and belongs to the technical field of plasma. The device and the method are used for preparing the polymer coating on the surface of a substrate. The method is characterized in that a vacuum chamber is divided into a discharging cavity and a processing chamber by a metal grid mesh; the metal grid mesh is insulated from the vacuum chamber; carrier gas and monomer steam are fed into the discharging cavity and the processing chamber through different pipes respectively; a to-be-processed substrate is put into the processing chamber; continuous discharging plasma is generated in the discharging cavity, pulse positive bias is applied to the metal grid mesh, and the plasma is released to enter the processing cavity to initiate monomer polymerization. The method has advantages that the power supply structure is stable, the price is low, debugging is easy, the plasma is stable, the acting time of the plasma can be shortened to the microsecond level, and the like.

The invention provides a Fabry-Perot antenna with a high gain and a low radar cross section. By adoption of a three-layer antenna coating design, the Fabry-Perot antenna has a radar cross section lower than that of a traditional microstrip antenna under the premise of having better radiation characteristics than the traditional microstrip antenna; and the Fabry-Perot antenna provided by the invention comprises an antenna radiation body, a feed structure, a metal floor, a first wave absorbing coating and a second reflection coating, which are printed on upper and lower surfaces of a first dielectric substrate, and a third reflection coating printed on the lower surface of a second dielectric substrate; the first wave absorbing coating is composed of N*N square wave absorbing units that have the same structure and are periodically arranged, and the second reflection coating and the third reflection coating are respectively composed of N*N square metal ring patches and square metal patchunits, which have the same structure and are periodically arranged. The Fabry-Perot antenna provided by the invention solves the technical problem of poor in-band radar cross section reduction effectin the prior art, greatly improves the gain of the antenna, and is suitable for the field of guided missile radar and satellite communication requiring low observable characteristics.

The invention discloses an intelligent irrigation control management system for irrigator. The system, connected with the irrigator, comprises a monitoring server, a manual controller, a master controller, a water pump monitoring device, a plurality of data acquisition units, a plurality of trans-monitoring devices, a position monitoring device, a plurality of position marking devices, a plurality of communications relay units, a fertilizer application controller, a tail gun controller and a plurality of solenoid valve controllers. Compared with prior arts, the inventive system can satisfy the overall demand for irrigation, solves the complex structure problem of an existing system, and is suitable for large-range application and large-scale agricultural production.

The invention discloses a method for detecting friction plate abrasion of an electronic parking braking system. The method comprises the following detection steps: 1, braking a vehicle by the electric parking braking system, and controlling an execution mechanism to clamp friction plates; 2, detecting the variable quantities of the voltage, current and time in a clamping process of the execution mechanism by a vehicle-mounted electronic control unit 6 (ECU); and 3, acquiring the abrasion loss of the detected friction plate through logically judging the acquired variable quantities by the vehicle-mounted electronic control unit 6 (ECU). When the method is used, the technical problem of complex structure, difficult large-scale and high-efficiency production and manufacturing, high manufacturing cost, incapability of adapting to large-scale improvement on the conventional vehicles, in accurate friction plate detection structure and the like of the conventional technical scheme are solved; simultaneously, the degree of the friction plate abrasion is measured accurately and timely; the conventional vehicles are modified conveniently and easily; and the degree of massive assembly line work is high.

The invention provides a biomedical semantic relation extraction method based on a multilayer neural network and an external knowledge base, aims to extract an entity-relation pair from a biomedical text, and provide technical support for mining mass biomedical text data and constructing a biomedical relation network. The semantic relation extraction method based on the multilayer neural network is adopted, the model can repeatedly extract effective information in the text through the multilayer neural network structure, the problem that the information extraction capacity of a traditional neural network is limited is solved, and the classification performance of the model is improved. A good effect is achieved on different data sets, and the semantic relation can be efficiently and accurately extracted from a large number of biomedical texts. Knowledge in an external biomedical database is reasonably introduced; a UniProtKB database aiming at a single entity and a BAR and IntAct database aiming at a binary relation are matched with an Attention mechanism to effectively screen single entity information, so that the utilization effect of external knowledge is improved.

The invention discloses an air conditioner system and a control method thereof. The air conditioner system comprises a machine room air conditioner system, a double-system heat exchanger and a room air conditioner system, wherein the machine room air conditioner system comprises a machine room compressor, a machine room condenser, a machine room throttling device and a machine room evaporator all of which sequentially communicate with one another in an end-to-end manner to form refrigerant circulation of the machine room air conditioner system; a condensation channel and an evaporation channel which can contain refrigerant and carry out mutual heat exchanging are defined in the double-system heat exchanger, the condensation channel and the machine room condenser are connected in parallel, and the refrigerant can selectively pass one of the condensation channel and the machine room condenser; and the room air conditioner system comprises a room compressor, a four-way reversing valve, an outdoor heat exchanger, a first throttling device and an indoor heat exchanger. According to heating circulation of the room air conditioner system in the air conditioner system, condensation heat of a machine room air conditioner can be effectively utilized, the efficiency of a room air conditioner can be improved, the waste of energy sources can be greatly reduced, and the structure is simple.

The invention discloses a vertical low-energy consumption and internal-circulation integral sewage treatment apparatus. The apparatus comprises a gas stripping zone, an aerobic zone, an anoxic zone and an anaerobic zone which are sequentially arranged from top to bottom, the gas stripping zone is provided with a reflux quantity regulator, a center cylinder is arranged under the reflux quantity regulator, the aerobic zone is provided with a filler, an aeration pipeline assembly is arranged under the aerobic zone, the baseboard of the anaerobic zone is provided with a water inlet tube, a three-phase separator is arranged between the anaerobic zone and the anoxic zone, a circulating pump is arranged between the three-phase separator and the bottom of the anaerobic zone, two sides of the gas stripping zone are provided with tilted plate assemblies used for removing mud, and filler layers are arranged above the tilted plate assemblies. The problems of many devices, tedious operation, large occupied area and complex filter structure in the prior art are solved in the invention due to the simple structure of the tilted plate assemblies.

The invention provides a sewing drive structure and a sewing machine provided with same. The sewing drive structure comprises a drive motor, a trimming mechanism, a presser foot lifting mechanism anda thread slacking mechanism, wherein the drive motor is separately connected with the trimming mechanism, the presser foot lifting mechanism and the thread slacking mechanism so as to drive the trimming mechanism, the presser foot lifting mechanism and the thread slacking mechanism to operate separately. Therefore, a movable cutter, a yarn trapper and a presser foot can be driven at the same timeby means of the one motor. The problem that in the prior art, the sewing machine adopts two independent devices to drive the movable cutter, the yarn trapper and the presser foot respectively, so thatthe overall structure of the sewing machine is complicated is solved.

The invention relates to a non-contact three-dimensional displaying simulative teaching system, comprising a host computer, and a back-projection device, a touch screen and a camera which are communicated with the host computer. A camera mode identifying module is arranged in the host computer, and an action model databank corresponding to relevant operations is arranged in the camera mode identifying module to identify action information in image signals collected by the camera and to inquire whether the collected action information matches the action model of the action model databank, and when the matched action model is found, the operation corresponding to the action model is executed. The back-projection device comprises a projector, a reflector and a back-projection screen. After the signal from the host computer is reflected by the reflector, the signal is projected to the back-projection screen by the projector. The system of the invention applies the back-projection system to multimedia teaching to lead the free moving of teacher before projection screen not to block the beam of projector so as to avoid the defect of front-projection, thus realizing timely and interactive control to objects and resulting in a more effective teaching course.

The invention relates to the aircraft engine blower and compressor adjustable stator blade adjusting structure design, and specifically to an adjustable stator blade linkage adjusting device. The adjusting device comprises a first rocker of which one end is fixedly connected with a shaft neck of one stator blade away from the compressor axis, and the other end is hinged to a linkage ring; a support base, fixed on the linkage ring; a pull rod of which one end is hinged to the support base, wherein the rotation axis of the pull rod is parallel to the axis of the stator blade; a pull rod base, fixed on the compressor, wherein the pull rod is slidably installed on the pull rod base along own axial direction; and a fixer for fixing the relative position between the pull rod and the pull rod base. The pull rod drives the linkage ring, the first rocker is driven and the corresponding stator blade is rotated, so the angle of the stator blade is changed. The structure is simple, the operation is efficient, and the engine development cost is reduced.

The invention provides an electromagnetic coil and a manufacture method thereof, wherein the electromagnetic coil comprises a coil injection molding member, one side of the coil injection molding member is provided with a connecting structure used for connecting a power cable part with a pin. The electromagnetic coil also comprises a housing, wherein the housing covers the connecting structure and is welded and connected with the coil injection molding member. In the electromagnetic coil and the manufacture method thereof, provided by the embodiment of the invention, a die structure can be simpler through designing the welding connection of the coil injection molding member and the housing as a split structure, the problem of complicated structure of the traditional electromagnetic coil is solved; meanwhile, the split structure is beneficial to the installation of the power cable part to ensure that the process is more reasonable.

The invention relates to the field of switch power sources and specifically relates to a PFC circuit capable of reducing output capacitance, a PFC control circuit and a switch power source in which the PFC control circuit is adopted. The PFC circuit provided in the invention comprises a PFC control chip; a feedback control circuit is integrated on the PFC control chip and is used for receiving input sampling voltage of an input detection circuit and output sampling voltage of an output detection circuit, the feedback control circuit is also used for outputting control signals for controlling a work mode of a voltage conversion circuit, the PFC control chip has a reference voltage end and is characterized by additionally comprising a waveform shaping circuit which is used for truncating a wave crest of input sampling signals, and the waveform shaping circuit is externally connected between the reference voltage end of the PFC control chip and earth. Compared with technologies of the prior art, the PFC circuit, the PFC control circuit and the switch power source are advantaged by circuit simplicity, low cost and easy-to-realize property.

The invention belongs to the field of concrete production equipment, and particularly discloses a stirrer for a concrete stirring station. The stirrer for the concrete stirring station comprises a stirring drum and a stirring shaft arranged in the stirring drum, wherein multiple groups of stirring blades are arranged in the circumferential direction of the stirring shaft; a scraping rod is slidably connected onto the inner wall of the stirring drum; scrapping sleeves abutted against the side surface of the scraping rod are slidably connected onto the stirring blades; the distances between thescrapping sleeves on the multiple groups of stirring blades and the axis of the stirring shaft are different; and the scrapping sleeves on the multiple groups of stirring blades are fixedly connectedthrough vertical stirring arms. The stirrer for the concrete stirring station provided by the invention can solve the problem that cement mortars are easily coagulated on the inner wall of the stirring drum and the stirring blades when an existing stirrer is used for stirring concrete.

The invention discloses an accumulator-driven sliding sleeve switch used for petroleum well completion. The sliding sleeve switch is of a cylinder structure and has an oil passage hole in annular space at the middle portion. The sliding sleeve switch comprises an electrical control part, a power source part and an action executing part. The accumulator-driven sliding sleeve switch used for petroleum well completion has following beneficial effects: a hydraulic sliding sleeve is easily operated and capable of performing on-off action of multiple sliding sleeves by inputting an electric signal at a time so that working time is greatly shortened; the sliding sleeves can be controlled to be opened and closed; as for the hydraulic sliding sleeve, power is outputted by hydraulic stored energy and controlled by a weak power source; due to storage of little electric energy, electricity storage and hydraulic energy can be conveniently integrated into the sliding sleeve; because of a relatively simple overall structure, long-distance transmission and excessively-long pipelines can be avoided; and by adoption of an accumulator as a power source, defects such as complicated structure, too many parts, small overall dimensions, difficulty in model selection and design and relatively low reliability are solved.

The invention discloses an image pick-up component. The image pick-up component is arranged at the inside of a shell and comprises a camera bracket, a camera module is arranged on the camera bracket,wherein a first magnet is arranged on the camera bracket, a driving component is arranged on the shell, the driving component is connected with a second magnet, and the second magnet is arranged in the form of being opposite to the first magnet; the driving component can drive the second magnet to move, and can further drive the camera bracket to move through magnetic force effect between the second magnet and the first magnet; and thus, the camera module is enabled to stretch out from the inside of the shell or shrink back to the inside of the shell. The invention also discloses a mobile terminal using the image pick-up component. The image pick-up component and the mobile terminal provided by the invention realize spring-free lifting of the camera module by a simple magnet attraction principle, and also can play a role in protecting and resetting the camera module.

The invention belongs to the technical field of robot accessories, and particularly relates to a lifting device and a robot. According to the lifting device, a rotating driving part is used for driving a cam to rotate, a cam rod penetrates through a mounting base, and a matching column of the cam rod stretches into a spiral groove of the cam. When the cam rotates, the matching column can move in the spiral groove, and the inner wall of the spiral groove applies force to the matching column along a cam shaft, so that the cam rod slides relative to the mounting base, and thus a connecting base connected with the cam rod moves relative to the mounting base. According to the robot with the lifting device, a lifted part is mounted on the connecting base, so that the lifting movement of the lifted part can be achieved. The mounting base, the cam and the cam rod are matched, and the device is simple, so that the system size is reduced. The lifting device serves as a modular structure and canbe quickly mounted to a place requiring a lifting function, such as a vehicle body of an existing automatic inspection robot. During operation, the lifted part is lifted, and the lifted part drops during non-operation, so that the lifted part is protected.

The invention provides a fingerprint module assembly structure and a mobile terminal. The fingerprint module assembly structure comprises a fingerprint module and a fingerprint module assembly substrate. The fingerprint module comprises a fingerprint cover plate and a fingerprint chip from the up down in sequence. The cross section of the fingerprint cover plate is larger than that of the fingerprint chip; the fingerprint module assembly substrate is provided with an assembly hole; the assembly hole comprises a first accommodation portion for accommodating the fingerprint cover plate and a second accommodation portion for accommodating the fingerprint chip; the hole size of the first accommodation portion is larger than that of the second accommodation portion; and the first accommodation portion has a bearing surface for bearing the bottom surface of the fingerprint cover plate. The fingerprint module assembly structure can fix the fingerprint module without using a metal ring, and can realize connection and fixation of the fingerprint module and the fingerprint module assembly substrate through the bearing surface, thereby solving the problem of complex structure of an existing fingerprint module assembly structure.

An interference elimination system is provided for eliminating from a first radio signal transmitted from a first radio terminal to a first radio base station, the effect of interference due to a second radio signal transmitted from a second radio terminal to a second radio base station. The second radio base station has an extractor for extracting the second radio signal from radio signals received in the second radio base station, and a transmitter for transmitting the extracted second radio signal to the first radio base station. The first radio base station has an interference eliminator for eliminating the second radio signal transmitted from the second radio base station from radio signals received in the first radio base station.

The invention belongs to the technical field related to a submersible, which discloses a buoyancy regulation system based on a two-way seawater pump, The buoyancy regulating system comprises an adjustable ballast tank, two valve groups and a two-way seawater pump, wherein the two valve groups are a first valve group and a second valve group respectively; the two-way seawater pump is formed with anI port and an II port; the first valve group is connected with the adjustable ballast tank and the I port; the second valve group is connected with the II port and is communicated with seawater; Thebuoyancy regulation system adjusts the volume of sea water in the adjustable ballast tank adaptively through the positive and negative reversal of the two-way seawater pump, thereby realizing the buoyancy regulation; the valve group includes a one-way valve and balance valve connected in parallel; The one-way balance valve comprises a valve body, a one-way valve assembly and a balance valve assembly, wherein the one-way valve assembly and the balance valve assembly are respectively embedded at opposite ends of the valve body, and the one-way valve assembly and the balance valve assembly are mutually valve seats. The invention simplifies the structure, reduces the volume, and further reduces the complexity and cost of the buoyancy regulation system of the submersible.

The invention discloses a rainwater two-stage filtering device which comprises a filtering part and a retention part, wherein the filtering part comprises a shell body and a ring-shaped filtering pipe; a water inlet is arranged at the top of the shell body; a water outlet is arranged at the bottom of the shell body; a filtered water outlet is arranged on the side wall of the bottom of the shell body; the top and the bottom of the ring-shaped filtering pipe are arranged at the top and the bottom of the shell body in a matching and contacting way; the water inlet and the water outlet of the shell body face toward a pipe opening of the ring-shaped filtering pipe; the diameter of the pipe opening of the ring-shaped filtering pipe is larger than that of the water inlet and the water outlet of the shell body and is less than that of the shell body; the retention part is arranged below the shell body of the filtering part and is of a groove body structure which is matched with the shell bodyof the filtering part; and a sewage discharging outlet is arranged at the bottom of the groove body. The rainwater two-stage filtering device is mainly used for filtering and collecting the rainwater, has the advantages of simple structure, convenience for installation and good quality of outflow water and is applicable to a roof rainwater discharging pipeline system in the field of building water supply and drainage.

The invention provides a dynamical system of a hybrid electric vehicle. The system comprises a front shaft drive, a back shaft drive, a battery and a monitoring module, the monitoring module is connected with the front shaft drive, the monitoring module is connected with the battery, and the monitoring module is connected with the back shaft drive, and the battery is connected between the front shaft drive and the back shaft drive; the front shaft drive comprises a first clutch, a second clutch, an engine, a first motor, a first gear, a second gear and a third gear, the first clutch is connected between an output shaft of the engine and a gear shaft of the first gear , the second clutch is connected between an input shaft of a retarder and a gear shaft of the second gear, a motor shaft ofthe first motor is connected with a gear shaft of the third gear, and the battery is connected with the first motor; the first gear is meshed with the second gear, and the second gear is meshed with the third gear. The dynamical system of the hybrid electric vehicle can solve the problem that the structure inside a compartment of a precursor engine is complex in an existing dynamical system of a hybrid electric vehicle.