119results about How to "Guaranteed usage time" patented technology

The invention discloses a filter unit for a dark pipe for saline-alkali soil. The filter unit comprises a pervious layer, a dressing layer and a water filtering layer, the pervious layer is wrapped with the dressing layer, and the dressing layer is composed of PVC or PE prilling materials with the diameters ranging from 0.5 cm to 0.6 cm; the dressing layer is wrapped with the water filtering layer. According to the technology, the water filtering layer formed by thick sand and straw serves as a main filtering layer, so that large particles and sludge can be effectively blocked; the dressing layer serves as an auxiliary layer so as to further filter water flow flowing through the water filtering layer, and then water enters the dark pipe through the pervious layer, so that small particles can be effectively prevented from entering the dark pipe, and blocking is prevented; the straw and the thick sand are adopted, so that material selection is convenient, and the cost is reduced; the straw rotting speed is low, the effective using time can be guaranteed, supplementing is convenient, and soil can be improved after straw rots.

The invention discloses a fire-retardant, anticorrosive and mothproof coating for restoring an ancient timberwork building. The fire-retardant, anticorrosive and mothproof coating is prepared from the following main components: a wetting agent, a defoaming agent, a film forming agent, an inorganic dispersant, a pigment, filler, an orange peel agent, petroleum asphalt, a cosolvent, cerium oxide, an organosilicon polymer solution, ethyl acetate and water. The fire-retardant, anticorrosive and mothproof coating for restoring the ancient timberwork building, disclosed by the invention, has the advantages of low cost, wide sources of raw materials and excellent fire-retardant, anticorrosive and mothproof effects; in addition, after the ancient timberwork building is restored, cracks on the surface of the ancient building and special vicissitude sense endowed by time still can be kept, and further a sense of repairing the old as old is obtained; the fire-retardant, anticorrosive and mothproof coating is an environment-friendly and safe novel building material.

The invention discloses a wireless earphone charging control method and a wireless earphone charging device. The method comprises the following steps: the remaining use time acquisition step: respectively acquiring the remaining use time of each earphone and a charging box; and the charging control step: comparing the remaining use time of each earphone with the remaining use time of the chargingbox and performing charging control on the earphone according to the comparison result. According to the wireless earphone charging control method, charging the earphone under the condition that the remaining use time of the earphone is greater than the remaining use time of the charging box can be avoided by adopting the mode of comparing the remaining use time of each earphone and the charging box, thus ensuring the most basic use of the earphone. In addition, the scheme adopts the method of comparing the remaining use time of each earphone and the charging box so that the remaining use timeof the two earphones is consistent or close, i.e. the working time is synchronized and the synchronous working time of the two earphones can be maximally prolonged.

The invention discloses a sterilizing toilet cleaning block which is prepared from raw materials comprising macromolecule adhesive, bactericide, dye, a surface active agent and cleaning auxiliary agent. The bactericide adopts nonoxidative bactericide. The sterilizing toilet cleaning block consists of nonoxidative bactericide and dye; and the dye can not discolor or fade when in use, and the sterilizing toilet cleaning block has higher sterilizing effect.

The invention relates to an intelligent filtering power-saving remote controller which comprises a remote controller shell (1), a circuit board (2), a power supply and at least one key, and further comprises two pressure sensors (6), a control module (4), and an electric control circuit breaker (5) and a filtering circuit (7) which are respectively connected with the control module (4). According to the intelligent filtering power-saving remote controller, connection is realized according to the modules to form the intelligent filtering power-saving remote controller, and an intelligent power supply scheme of the remote controller is realized; the electric energy loss caused by long-time power supplying from the power supply (3) to the remote controller is avoided, and the service life of the remote controller is guaranteed.

The invention relates to a production process of dimethylsiloxane, in particular to a continuous preparation process of polydimethylsiloxane. A siloxane hybrid ring is subjected to water removing through a first film evaporator and a drying agent fixed bed and subjected to metal ion removing through an activated carbon fixed bed and an ion exchange resin bed; hexamethylsiloxane and the siloxane hybrid ring are mixed by a static mixer according to the mass ratio of 1:(2 to 200), and then a mixture enters a preheater to be preheated to 70-90 DEG C; a preheated material enters a tubular reactor to be subjected to an equilibrium reaction, row tubes are filled with catalysts, the reaction temperature is 70-90 DEG C, and the reaction residence time is 0.5-2 hours; residual acidic materials and other impurities are adsorbed through a filter device; low molecules are removed through a second film evaporator, the vacuum degree is 0 to minus 0.099 MPa, and the degreasing temperature is 150-250 DEG C; and a finished product with the low molecules removed is cooled, then filtered and packaged. The production efficiency is significantly improved, and the product quality is stabilized.

The present invention pertaining to the technical field of wireless application provides a safety and environmental protection type mobile communication terminal and a working method thereof. The terminal mainly comprises a mobile main-machine and a matching sub-machine, wherein, the mobile main-machine and the sub-machine are provided between them with a main-machine side low-power wireless communication part and a sub-machine side low-power wireless communication part for performing the transmission of control signals and Information signals, and the mobile main-machine and the sub-machine are respectively connected with a main-machine controller and a sub-machine controller, wherein, the main-machine controller is connected with an RF module and is provided with a main-machine identifying system and an emission selecting switch, and the sub-machine is provided with an RF emission part and is connected with the sub-machine controller. According to the method, the mobile main-machine can receive emission signals during communication through the sub-machine, but also can emit signals independently to communicate with a base station or other mobile communication terminals. The communication power consumption and high frequency electromagnetic radiation of the mobile main-machine are greatly reduced, and the present invention which is suitable for wide-range application development has the characteristics of safety, environmental protection, convenience, and energy-saving.

The invention discloses a gum dipping technology and special gum dipping device for quick pultrusion of a composite core. The gum dipping device comprises a tool support, a yarn dividing frame, a gum dipping tank, a gum extruding roller, a yarn divider, a yarn collector, a precuring mould, a curing mould, a resin barrel, a control valve and a gum guiding pipe; the yarn divider is arranged on the tool support; the gum dipping tank is arranged below the tool support; the gum extruding roller and the yarn divider are sequentially arranged in the running direction of fibers; an outlet of the yarn divider is divided into two ways, one way sequentially passes through the precuring mould, the yarn collector and the curing mould, and the other way sequentially passes through the yarn collector and the curing mould; an outlet of the resin barrel is communicated with the gum dipping tank through the gum guiding pipe, and the gum guiding pipe is provided with the control valve. According to the gum dipping technology and special gum dipping device for quick pultrusion of the composite core, the resin barrel is provided with the control valve, the resin flow is adjusted through the control valve, resin can be injected into the gum dipping tank at the stable and continuous speed, when the resin flow and the resin amount used by pultrusion keep balanced, the freshness of the resin in the gum dipping tank is stable, and therefore the quality of a core rod obtained through pultrusion is stable.

The invention discloses an efficient adaptive robot for mountain forest. The efficient adaptive robot comprises a mounting plate, a two-way electric push rod is fixedly mounted in the middle of the bottom face of the mounting plate, T-shaped frames are fixedly mounted at the two ends of the two-way electric push rod, connecting plates are welded to the two ends of each T-shaped frame, and clamping wheels are movably mounted at one ends of the connecting plates; and the outer sides of the two clamping wheels are connected through a crawler belt, a rotating shaft is movably installed in one end of the driving shaft, and a pushing column is installed at one end of the rotating shaft through a screw.Compared with the prior art, the robot disclosed by the invention has the beneficial effects that the two-way electric push rod, the T-shaped frame, the clamping wheels, the crawler belt and the circular wheels are used, round wheels can be used on a smooth zone and a road surface, moving operation of the robot is facilitated, the moving speed of the robot on the smooth zone and the road surface is increased, damage to the road surface during walking of a crawler belt is avoided, the crawler belt is used on an uphill zone and an unsmooth zone, the road holding force of the robot is increased, and the robot can conveniently uphill and walk.

The invention relates to a touch filtering type power-saving remote controller. The touch filtering type power-saving remote controller comprises a remote controller shell (1), a circuit board (2), a power supply (3), at least one key (4), at least one keycap (5), at least one pressure sensor (8), a control module (6), and an electrically controlled circuit breaker (7) and a filter circuit (9) respectively connected with the control module (6). Based on the designed technical scheme, the above modules are connected with one another to form the touch filtering type power-saving remote controller, a smart power supply scheme is realized for the remote controller, power loss caused by the fact that the power supply (3) provides power to the remote controller for a long time is avoided, and service time of the remote controller is guaranteed.

The invention relates to a submersed nozzle slag line automatic control method based on molten steel superheat degree. The method is characterized by comprising the following steps that 1, the submersed nozzle slag line position is determined; and 2, a slag line automatic control technology is conducted. According to the scheme, the submersed nozzle slag line position is accurately calculated andtracked and automatically and dynamically tracked and adjusted according to the tundish superheat degree at the same time, the using time of the same slag line is taken into account, therefore, the problem that in an original slag line control technology, the continuous casting blank defect occurrence rate rises due to the fact that slag line position measurement is not accurate, and dynamic adjustment is not conducted according to the superheat degree changes is solved, the using time of the same slag line scale is guaranteed at the same time, and the service life of a submersed nozzle is prolonged.

The invention relates to a device for actively tracking specific data on systems or the components of a metallurgical system, characterized in that at least one readable and writable memory medium for the specific data is fixedly connected to each component, and the specific data are modifiable periodically and / or on the basis of input. In addition, the invention relates to a metallurgical system, in particular an integrated foundry or a mini-mill, comprising at least one device according to the invention. Finally, the invention relates to the use of at least one device according to the invention in an electric steel mill or a converter steel mill and / or in systems of secondary metallurgy and / or in casting plants, in particular continuous casting machines, and / or in molten steel transport units and / or in furnace systems and / or in hot and cold rolling mills and / or in rolled stock treatment systems, in particular strip treatment systems.

The invention relates to a carbon oxygen saturation detection device which comprises a detection unit, a conversion unit, a processor and a display screen. The detection unit comprises a detector anda plurality of light sources of different wavelengths, wherein the detector detects the light intensity signals of the light emitted by the receiving light source reflected by the arterial blood in the tissues and sends the light intensity signals to the conversion unit; the conversion unit processes the light intensity signals and sends the signals to the processor; the processor analyzes the electrical signals to obtain carbon oxygen saturation. The invention also relates to a carbon oxygen saturation detection method which comprises the steps that an LED light source sequentially emits light signals to the tissues, and a photoelectric detector receives the light intensity signals and sends the light intensity signals to an analog front end; the analog front end receives the light intensity signals, converts the light intensity signals into voltage signals, filters and amplifies the voltage signals, converts the voltage signals into discrete digital carbon-oxygen signals, and sends the discrete digital carbon-oxygen signals to a single chip microcomputer; the single chip microcomputer calculates the saturation of carbon and oxygen. The carbon oxygen saturation detection device realizes non-invasive and real-time monitoring of carbon and oxygen saturation in human arterial blood.

The embodiment of the invention discloses a screen backlight brightness adjusting method and device, a storage medium and electronic equipment, and the method comprises the steps: obtaining the current remaining electric quantity in a bright screen state; determining first backlight brightness corresponding to the current residual electric quantity according to a preset mapping relationship between the electric quantity and screen backlight brightness; acquiring current panoramic data, and calculating second backlight brightness corresponding to the current panoramic data according to a presetregression model; determining first target backlight brightness according to the first backlight brightness, the second backlight brightness and a preset weight; and setting the screen backlight brightness as the first target backlight brightness. The embodiment of the invention can solve the technical problem that the screen backlight brightness mode is difficult to cover the personalized demands of the user.

The invention discloses an ecological health-preservation house for a cold region and an assembly method. An existing greenhouse in the market is low in heat-collecting capacity in an alpine region and large in health preservation difficulty. An ecological health-preservation house for the cold region comprises a base edge, wherein the base edge (1) is rectangular and is connected with a side wall body (13) and a rear wall body (4); the front part of the rear wall body is connected with a health-preservation house body (3); the health-preservation house body is provided with a health-preservation house roof (8) and a health-preservation house front wall; the health-preservation house front wall is provided with a health-preservation house front door (5) and a health-preservation house front window (6); the health-preservation house front wall is provided with a health-preservation house front water curtain wall (9); a side door (2) is arranged at the side part of the health-preservation house body; a health-preservation house inner-layer steel structure frame (7) is arranged between the front side of the base edge and the rear wall body and provided with a heat preservation layer (14); and a glass longitudinal frame (10) and a glass transverse frame (11) are arranged between the front side of the base side and the rear wall body. The application is applied to the ecological health-preservation house for the cold region and the assembly method.

The invention discloses a voltage stabilizer free of electric arc voltage regulation. The voltage stabilizer comprises a single chip microcomputer processor, a voltage detecting module, an output regulating relay group, a voltage regulating relay converter module, a power supply module, and a transformer, wherein the voltage regulating relay converter module comprises electric supply controllable silicon driven by an output signal of the single chip microcomputer processor, output controllable silicon and a converter relay; an input end of the transformer is accessed to electric supply, and an output end of the transformer is used as an output end of a live wire of the voltage stabilizer. By improving the original transformer switching mode, the product disclosed by the invention is combined with the relay through the controllable silicon, the function of the voltage stabilizer is realized by switching between the transformer output and the electric supply bypass, and the generation of electric arc is reduced and even avoided, so that the power of the voltage stabilizer is remarkably improved, the service life of the relay is greatly prolonged, and the whole-machine service time is guaranteed very well.

The invention provides an air adsorption purification system in an air separation device, and relates to the field of chemical engineering. The air adsorption purification system comprises a first adsorption tower, a second adsorption tower, a heat exchanger and a PLC control system, wherein the first adsorption tower and the second adsorption tower are connected in parallel; a CO2 detector is arranged at the outlet end of each of the first adsorption tower and the second adsorption tower; the inlet end of the heat exchanger is connected with waste nitrogen; the outlet end of the heat exchanger is connected in series with the first adsorption tower and the second adsorption tower; and the PLC control system controls the switching of the first adsorption tower and the second adsorption tower based on CO2 content data detected by the CO2 detector. Through the application of the PLC control system, the control points of access and output of the DCS system are reduced; the workload of DCSoperators is reduced; the mistake making probability of personnel is avoided; and the system reliability is improved.

The invention provides a self-lubricating line guide rail structure, which enables lubricating oil to be added under the condition of not detaching a mould, ensures the use time of the mould and reduces the labor cost. The self-lubricating line guide rail structure comprises line straight-line guide rails, a line base and a line insert; the line insert is tightly fixed at one end of the line base; the two sides of the line base are clamped on the line straight-line guide rails at the two sides; the self-lubricating line guide rail structure is characterized in that the regions of the two sides of the line base, which are stuck with the line straight-line guide rails, are provided with annular oil grooves; the annular oil grooves are distributed along the line straight-line guide rails in a straight-line manner; lubricating agent oil paths are arranged inside the line straight-line guide rails; oil inlets of the lubricating agent oil paths are located on the tail end faces of the line straight-line guide rails; oil outlets of the lubricating agent oil paths are over against the annular oil grooves; and the oil inlets are provided with oil feeding nozzles with check valves.

A liquid-reinforced physical distribution monitor comprises a base and a liquid display type impact sensing assembly which comprises a transparent sensing barrel and a liquid storage barrel. The sensing barrel is filled with color-developing materials, one end of the sensing barrel is closed while the other end of the same is communicated with the liquid storage barrel which is filled with flowing media, the flowing media and the color-developing materials in the sensing barrel correspondingly form a monitoring function, a groove is formed at one end where the sensing barrel and the liquid storage barrel are connected, and a hose is arranged in the groove and can separate the sensing barrel from the liquid storage barrel when the hose is supported up. The liquid-reinforced physical distribution monitor starts to perform a function of recording impact, collision and vibration states after reaching an application place and being mounted and positioned.

The invention relates to an antibacterial plastic bag used for packaging vegetable and a production process thereof. The antibacterial plastic bag comprises, by weight, 100 parts of polyethylene, 50 to 60 parts of acrylonitrile, 18 to 27 parts of butadiene, 23 to 32 parts of licorice root, 20 to 25 parts of dark plum, 45 to 60 parts of Pu'er tea, 18 to 24 parts of bitter gourd, 6 to 8 parts of an aseptic, 1 to 3 parts of a coupling agent, 3 to 5 parts of a flexibilizer, 4 to 6 parts of starch and 2 to 3 parts of potassium citrate. According to the invention, plastic produced in the invention has a good antibacterial function, can guarantee freshness of food, inhibit decay and fermentation of organic matters in garage and reduce peculiar smell emitted by decayed garage, and ensures that the plastic bag inhibits decay, mildew, emission of peculiar smell and the like in the process of usage, so environmental quality is improved; and the plastic bag is low in production cost and suitable for promotion.

The invention discloses a rapid soil moisture detection device suitable for different soil textures. The rapid soil moisture detection device comprises a device main body (1). The device main body (1)is provided with a main power switch (3), a motor switch (4), a display screen (5), a USB interface (6), an external charging interface (7) and an operation button (8); the lower part of the device main body (1) is connected with a detection rod (9), an electric wire (11), a motor chamber (14) and a micro motor (16) are arranged in the detection rod (9), a gear (15) is arranged below the micro motor (16), and the gear (15) is connected with the micro motor (16); a spiral drill bit (19) is connected to the lower portion of the detection rod (9), and a detection needle (20) is embedded in the lower end of the spiral drill bit (19). According to the device, soil moisture data can be rapidly obtained in part of soil with more sand and stone or soil with more serious hardening in the karst region, the time and labor are saved, coordinate information of corresponding sampling points can be recorded, and the device is diversified in function, long in service life and simple and convenient tooperate and has higher popularization and application value.

The invention discloses clothes washing equipment based on membrane-treatment water purification technology, comprising a casing, an outer tub and a washing tub, wherein the outer tub is arranged inside the casing, a containing cavity is formed between the outer tub and the casing, the washing tub is arranged inside the outer tub, the upper end of the washing tub is opening, a balance ring is arranged at the opening end, a drain outlet is arranged at the lower end of the washing tub, an impeller is arranged at the bottom of the washing tub, and is fixedly connected with an output shaft of a drive motor in the containing cavity, one end of a circulating tube is communicated with the drain outlet while the other end thereof is communicated with the upper end of the washing tub, a first drainvalve, a membrane filtration assembly and a drain pipe are arranged, from one end to the other end, of the circulating tube, one end of the drain pipe is communicated with the wall of the circulatingtube while the other end thereof extends out of the casing, a second drain valve is arranged on the drain pipe, and the membrane filtration assembly comprises a membrane filtration box and a high-pressure back flushing device. With the membrane filtration assembly arranged in the circulating tube, calcium ion, magnesium ion, fluoride ion and the like of circulating water can be removed, hardeningof clothes is avoided, and then, discomfort to people caused by the hardened clothes is avoided.

The invention discloses an oil paint coating method for an external identifier of a metro vehicle, which comprises the steps of blending oil paint and a curing agent according to a certain volume ratio; manufacturing a silk-screen template according to the content of the identifier, and fixing the silk-screen template at an external corresponding region of the vehicle; coating the blended oil paint on the silk-screen template, and performing the blade coating by a scratch board; and removing the silk-screen template, and drying the identifier under a room temperature. Due to the oil paint coating method, the external identifier of the metro vehicle is good in weather resistance, ultraviolet ray resistance, aging resistance and the like, so that the use durability of the external identifier of the metro vehicle can be guaranteed, the aging, the fading and the falling of the external identifier of the metro vehicle through wind blowing, raining and solarizing and the cleaning of vehiclecleaning liquid caused by lamination can be completely eradicated, the passenger safety can be guaranteed, and the metro vehicle can be conveniently overhauled. Meanwhile, due to the oil paint coating method of the external identifier of the metro vehicle, the quality of the metro vehicle is greatly improved.

The invention relates to a grasping type touch-based delayed remote control comprising a remote control shell (1), a circuit board (2), a power supply (3) and at least one key. The remote control further comprises two pressure plates (7), at least two springs (6), at least two groups of control contacts, a control module (4), and an electrically-controlled circuit breaker (5) and a timing circuit (10) which are connected with the control module (4). Based on the technical scheme designed by the invention, the modules are connected to form the grasping type touch-based delayed remote control, an intelligent power supply scheme for the remote control is realized, power loss caused when the power supply (3) supplies power to the remote control for a long time is avoided, and the using time of the remote control is ensured.

The invention belongs to the technical field of airplane outfield maintenance guarantee, and relates to a portable radar signal simulator. The radar signal simulator comprises an antenna module, a frequency synthesizer module, a display control module and a power supply module which are installed in a shell. The frequency synthesizer module is integrated with a 2GHz-18GHz functional module and a 18GHz-40GHz functional module, and an analog signal output interface is reserved; the antenna module is integrated with a slot antenna and an antenna horn body, receives the radar analog signals outputby the frequency synthesizer module, and transmits 2GHz-18GHz analog signals and 18GHz-40GHz analog signals through the slot antenna and the antenna horn body respectively; the display control modulecompletes radar signal parameter setting and working state display; the problem that a radar signal simulator is large in size, heavy in weight and inconvenient to carry for field guarantee is solved, and the maintenance efficiency of army support personnel is improved.

The invention discloses a Bluetooth door handle. The Bluetooth door handle comprises a handle shell, a handle steel ring, a door lock body and a power supply, wherein the handle shell comprises a first accommodating shell which is arranged integrally and a second accommodating shell which is perpendicular to the first accommodating shell; the door lock body comprises a rotor transmission device, a controller and a Bluetooth device, wherein the motor transmission device is fixedly arranged in the first accommodating shell; the controller is fixedly arranged in the second accommodating shell, and is wirelessly connected with a mobile phone application module; the Bluetooth device is arranged on the controller; the controller is also connected with a memory; a button clamping groove and a handle button which is fixedly arranged on the button clamping groove and is electrically connected with the controller are arranged on the second accommodating shell; an LED (Light-Emitting Diode) indicating lamp is also arranged on the handle shell. The Bluetooth door handle has the beneficial effects of simple structure, convenience in operation, and high safety performance; a control device in the Bluetooth door handle can also effectively record the time and the frequency of the entrance and the exit of personnel; the reliability of user security is greatly improved; therefore, the using performance of the door lock is greatly improved.

The invention discloses a contact type power saving remote controller, comprising a remote controller housing (1), a circuit board (2), a power supply (3), at least one button (4), at least one key cap (5), a control module (6) and an electric control breaker connected to the control module (6), and at least one pressure sensor (8). Based on the technical scheme, the modules are connected to constitute a contact type power saving remote controller. By aiming for the intelligent power supply scheme, the contact type power saving remote controller avoids the electric energy loss caused by the power supply (3) supplying power to the remote controller for long time and guarantees the usage time of the remote controller.

The invention relates to the technical field of cooling liquid, in particular to cooling liquid for a screw-type air compressor and a preparation method of the cooling liquid. The cooling liquid for the screw-type air compressor comprises the following components: secondary hydrogenated mineral oil, an ashless antioxidant, polymethacrylate, zinc dipentyldithiocarbamate, aliphatic aromatic hydrocarbon, a polyether high-molecular compound and a composite additive, wherein the ashless antioxidant is a composition of ashless thiocarbamate and a methyl benzotriazole derivative. The cooling liquid for the screw-type air compressor is long in service life and low in cost.

The invention discloses a self-timing medicine-adding collar based on solar charging and capable of repelling worms in dogs. The collar includes a ring body, a core intelligent unit, cloud server and a user mobile terminal, wherein the core intelligent unit is connected with the ring body and the cloud server and the user terminal are cooperated with the core intelligent unit; the upper surface of the ring body is provided with a solar panel; the core intelligent unit is internally provided with a charging circuit, a solar rechargeable battery, a lithium battery, a battery management circuit, a single chip microcomputer, a medicine-adding component, a communication component, a GPS positioning module and timer; the outer part of the core intelligent unit is provided with a medicine adding hole, and the position of the medicine adding hole is matched with the medicine-adding component; the solar panel is connected with the solar rechargeable battery through a charging circuit, the solar rechargeable battery and the lithium battery are connected with the battery management circuit, and the battery management circuit is connected with the single chip microcomputer, the communication component, the GPS positioning module, timer and the medicine-adding component for power supplying; the communication component, the GPS positioning module, timer and the medicine-adding component are electrically connected with the single chip microcomputer. The collar has an intelligent positioning and tracking function, and the battery life is very long.

The invention belongs to the field of mobile toilets and particularly relates to a sewage discharging system of a mobile toilet and a control method thereof. The sewage discharging system of the mobile toilet comprises water closets with attached sewage discharge switches and further comprises a transferring tank. The transferring tank communicates with the water closets through first valves and communicates with a vacuum pump through a second valve. The transferring tank is connected with a detection unit used for collecting the pressure in the tank. In the standby state and the sewage discharge state, the inside of the transferring tank keeps the negative pressure state, a control unit monitors the pressure in the transferring tank, if the pressure in the transferring tank is higher thana negative pressure set value, the second valve is opened to start the vacuum pump, air in the transferring tank is discharged until the pressure in the transferring tank reaches a negative pressureset value, the second valve is closed, and the vacuum pump stops operation. The sewage discharge system is compact in structure, low in power consumption and rapid in response, guarantees the sewage discharge speed and the sewage discharge effect and also can effectively guarantee the service time.