29results about How to "Large water flow" patented technology

The utility model discloses an anti-mosquito mesh bag for a sewer, which relates to the technical field of design of auxiliary equipment of a cover plate for water leakage of a water channel and comprises a well cover base, a cover plate mesh bag fixing and clamping unit and an anti-mosquito mesh bag auxiliary fixing unit, and the upper side of the well cover base is connected with a rain leakage plate through the cover plate mesh bag fixing and clamping unit. The anti-mosquito net bag body is fixed on the lower side of the well lid base through a wire clamp buckle and a fixing iron wire, an anti-mosquito net bag auxiliary fixing unit is arranged in the anti-mosquito net bag body, a connecting protrusion is arranged on the surface of the upper side of the well lid base, and a cover plate net bag fixing clamping unit comprises a rain leakage plate, a limiting cylinder, a supporting clamping block and a connecting clamping hole. The anti-mosquito mesh bag can prevent the water leakage cover plate from being damaged, does not affect the use of a sewer in the sewer, is firm in fixation, can easily contain more heavy objects, and does not affect the collection and use of impurities.

The invention provides an air supply control method and device, electronic equipment and an air conditioning unit. The air supply control method comprises the steps that the current air volume and the current static pressure are detected; acquiring the current air volume and a preset motor rotating speed for realizing operation at the lowest power consumption power under the current static pressure according to the relation between each static pressure and the motor rotating speed and the lowest power consumption power under the pre-stored different air volumes; adjusting the rotating speed of the motor according to the preset motor rotating speed for realizing the lowest power consumption operation under the current air volume and the current static pressure, and enabling the motor to operate according to the preset motor rotating speed. According to the air supply control method, the air conditioning unit operates according to the lowest energy consumption mode under the same air volume and the same static pressure, it is guaranteed that the air conditioning unit can operate according to the lowest energy consumption mode according to the actual air volume and the actual static pressure on each occasion or each application scene, the use requirements of a user on different occasions are met, and the user experience is improved. The technical problems that a traditional multi-motor air cabinet unit is large in energy consumption and cannot run in an energy-saving mode in the prior art are solved.

The present invention relates to the field of motor cooling technology, specifically a water-cooled motor, including a bottom plate and a motor housing, a water pump and a cooling mechanism on both sides of the motor housing, a rotor in the motor housing, and a coupling connected to one end of the rotor. The heat generated by the rotor and the stator cover of the present invention is conducted out through fins in the form of heat conduction and heat convection. The rotor drives the water pump through the coupling to input the coolant between the stator cover and the motor housing. The cooling liquid contacts the fins to absorb the heat. The coolant fills the rotor housing to absorb the heat radiated from the inside of the motor. The coolant flows back to the water pump through the cooling mechanism and the connecting pipe to form a circulating heat dissipation. When the temperature of the motor is high, the area of ​​the airbag ring that expands due to heat becomes smaller, which can increase the input speed of the coolant. At the same time, the curvature of the arc-shaped bimetallic spring increases, and the soft rubber membrane petal is driven to open and increase the diameter of the water outlet pipe, which can greatly improve the circulation speed of the water, thereby greatly improving the heat dissipation efficiency of the motor.

The utility model relates to the technical field of drinking water equipment, and provides drinking water equipment which comprises a water supply assembly, a heat storage device and a heating assembly, the heat storage device is connected to the water outlet end of the water supply assembly and comprises a shell assembly and a heat exchange assembly arranged in the shell assembly, and a gap between the heat exchange assembly and the shell assembly is filled with heat storage media. The heat exchange assembly is provided with at least two groups of heat exchange pipelines in parallel, the heat exchange assembly is provided with a purified water inlet and a purified water outlet, and the purified water inlet and the purified water outlet are respectively communicated with each group of heat exchange pipelines; the heating assembly is connected to the purified water outlet and suitable for being connected with the water using assembly. Compared with the heat exchange assembly which is provided with a single heat exchange pipeline with the same flow area, the heat exchange assembly can effectively increase the flow area of the heat exchange pipeline and reduce the flow resistance of purified water in the heat exchange pipeline.

The utility model relates to the technical field of floor drains, in particular to a quick-discharge adjustable odor-resistant floor drain. The floor drain comprises a floor drain body, a first flow hole is formed in the inner bottom face of the floor drain body, a first mounting cylinder is arranged on the first flow hole, a fixing and adjusting assembly is arranged on the inner wall of the first mounting cylinder, and a filter screen is arranged on the fixing and adjusting assembly and arranged in the floor drain body. The conical cover is arranged in the filter screen, so that water can still pass through the side wall after the bottom of the filter screen is filth-blocked, a relatively large water passing amount is kept, and blockage is avoided; the fixing and adjusting assembly is matched with the nut at the top of the filter screen, so that the height of the filter screen can be adjusted, the sealing groove and the sealing ring can be separated or closed, the water discharge amount can be adjusted, the situation that water is discharged while being washed in a living kitchen is supported, and a water outlet can be totally closed.

The utility model relates to the technical field of smart home, and discloses an intelligent water dispenser which comprises a lower main body and an upper main body, the interior of the lower main body is of a hollow structure, drinking water is contained in the lower main body, the upper main body is arranged above the lower main body and comprises a lower platform, a supporting frame and an upper platform, and the lower platform is fixedly installed at the top of the lower main body; a supporting frame is arranged on one side of the lower platform, an upper platform is arranged at the top of the supporting frame, at least three water outlet devices are arranged at the bottom of the upper platform, water outlet pipes are arranged on the water outlet devices respectively, the diameters of the water outlet pipes are different, a containing platform is arranged on the lower platform, a moving track is arranged in the containing platform, and cup containing holes are formed in the moving track. Proper water outlets and water outlet rates can be selected for containers with different calibers and capacities, so that the water filling time is saved; and according to different brewed drinks, the temperature and quantity are respectively controlled, and the medicine is automatically fed to the elderly.

The invention relates to the technical field of water supply equipment, and discloses a control method of water supply equipment. The control method of the water supply equipment comprises the following steps that the water temperature required by a user is obtained based on a user instruction; and the hot tank outlet water temperature of the hot tank assembly is obtained, the water temperature required by the user is compared with the hot tank outlet water temperature, and an instant heating mode or a mixed water heating mode is selected according to the comparison result. And when the water temperature required by the user is larger than the water temperature of outlet water of the hot tank, the water supply equipment is controlled to enter an instant heating mode, and in the instant heating mode, water in the hot tank assembly enters the water purification rear end pipeline and is heated by the electric heating assembly, and then drinking water with the required water temperature is provided for the user. When the water temperature required by the user is smaller than the water temperature of outlet water of the hot tank, the water supply equipment is controlled to enter a mixed water heating mode, and in the mixed water heating mode, water in the hot tank assembly and water in the second water purification branch pipeline enter the water purification rear end pipeline to be mixed and then are heated through the electric heating assembly, and drinking water with the required water temperature is provided for the user.

The invention relates to the field of household appliances, and discloses a heat exchange system and a water outlet device. The heat exchange system is high in heat exchange efficiency, the water flow rate of the heat exchange system can be increased, the purpose of preparing a large amount of boiled water in a short time is achieved, the waiting time for a user to receive water is shortened, and meanwhile the setting space can be saved. The heat exchange system is used for the water outlet device, the water outlet device is provided with a water supply module, the water supply module supplies water to the heat exchange system, the heat exchange system comprises a body and at least one heat exchange module, the heat exchange module is arranged on the body, and each heat exchange module comprises a first heat exchange assembly and a second heat exchange assembly. The first heat exchange assembly and the second heat exchange assembly preheat normal-temperature water through hot water, and meanwhile the hot water is cooled into warm boiled water.

The invention discloses a water flow distributor, and relates to the field of sewage treatment, the water flow distributor comprises a closed transverse pipe, one side of the transverse pipe is communicated with a water inlet pipe, the top surface of the transverse pipe is connected with a plurality of flow dividing pipes, the flow dividing pipes are respectively inserted into a plurality of bee eyes from bottom to top, and a distance is reserved between the flow dividing pipes and the tops of the bee eyes; the inclined plate precipitator comprises a plurality of groups of water flow distributors, transverse pipes in two adjacent groups of water flow distributors are arranged in an up-and-down staggered manner, and the number of shunting pipes is different; one side of each transverse pipe is communicated with the water inlet pipe through a secondary distribution pipe; the secondary water distribution tank for the inclined plate precipitator is arranged at the upper part of the inclined plate precipitator and comprises a tank body, a water inlet pipe on the tank body and a plurality of secondary distribution pipes on the side part of the tank body, according to the invention, the sewage treatment efficiency is improved by 8-10 times compared with the traditional sewage treatment efficiency, and the treatment time is also accelerated by 8-10 times.

The present application relates to a dewatering construction method for a small pipe well for emergency dewatering, which comprises the following steps: S1: measuring and locating the pipe well point where dewatering is required; S2: setting up a water pump, placing a first pipe, and opening a plurality of water filter holes on the first pipe, wherein the water filter holes are arranged in a plum blossom shape, and a filter screen is wrapped around the first pipe; S3: drilling a dewatering hole on the ground; S4: placing the first pipe into the dewatering hole; S5: connecting the water pump and the first pipe with a soft pipe, and starting the water pump for dewatering; the present application can quickly lower the water level in an area to the water level required for construction in a short time, ensure that the soil can be excavated normally, further reduce the various influences caused by the adverse effects of dewatering during the construction process, and thus further improve the stability and safety of foundation pit construction.

The utility model relates to the technical field of drinking water equipment, and provides a heat storage device and drinking water equipment, the heat storage device comprises a shell assembly and a heat exchange assembly, and a heat storage cavity is formed in the shell assembly; the heat exchange assembly is arranged in the heat storage cavity, a gap between the heat exchange assembly and the inner wall of the heat storage cavity is filled with a heat storage medium, the heat exchange assembly is provided with at least two groups of heat exchange flow channels in parallel, the heat exchange assembly is provided with a purified water inlet and a purified water outlet, and the purified water inlet and the purified water outlet are communicated with each group of heat exchange flow channels respectively. Compared with a heat exchange assembly which is provided with a single heat exchange flow channel with the same flow area, the flow area of the heat exchange flow channel can be effectively increased, and the flow resistance of purified water in the heat exchange flow channel is reduced. When the heat storage device is applied to the drinking water equipment, due to the fact that the flow area of the heat exchange flow channel in the heat exchange assembly is increased, and the flow resistance of purified water in the heat exchange flow channel is reduced, the water outlet flow of the instant heating water dispenser can be correspondingly increased, the water taking time of a user in the using process is shortened, and the user experience effect is good.

The present invention relates to a cleaning machine, comprising a box body with a washing chamber and an open water pump arranged at the bottom of the box body, wherein the open water pump comprises: a pump casing, an impeller, and a water dividing member. The water dividing member of the present invention cooperates with a water baffle plate to form an area at the lower part of the pump casing that can pressurize and divert water entering the pump casing. The first water after diversion is output through a first water outlet at the top of the pump casing, and the second water is output through a second water outlet at the side of the pump casing. Since the second water is directly output circumferentially through the pump casing under the water baffle as the impeller rotates, the first water is output upward after being radially guided by the water dividing member, thereby eliminating the interference problem of the two water outlets, reducing the energy loss of the water flow, and enabling the two water outlets to maintain a high head and a large water flow rate. The present invention can complete the two-way water pumping by only relying on one impeller, and the overall structure is simple, reducing the production cost. In addition, the present invention maintains the use of an open water flow system, which is convenient for disassembly and assembly and cleaning of the water flow system.

A front filtering module, a booster pump, a water softening module and a water purifying module are arranged in a shell, a raw water inlet, a soft water outlet, a purified water outlet, a direct drinking water outlet and a waste water opening are formed in the shell, the water inlet end of the front filtering module is connected with the raw water inlet, and the water outlet end of the front filtering module is connected with a water inlet of the booster pump; a water outlet of the booster pump is respectively connected with water inlet ends of the water softening module and the water purifying module, a water outlet end of the water softening module is connected with the soft water outlet, and a water outlet end of the water purifying module is respectively connected with the purified water outlet and the direct drinking water outlet. The embedded water purification equipment integrates water purification and water softening functions, raw water is primarily filtered by the front filter module and then is conveyed to the water purification module and the water softening module through the booster pump, so that the influence of the water pressure of the raw water is relieved, and the stability of water production of the whole embedded water purification equipment is maintained; meanwhile, the water flow of the water outlet of the water purification module and the water outlet of the water softening module is large, the water outlet speed is high, and waiting is not needed for water use.

The invention discloses a double-circulation cooling system of a parallel double-cylinder engine. The double-circulation cooling system comprises an oil cooling system and a water cooling system. The oil cooling system comprises a first lubricating oil way and a second lubricating oil way. The water cooling system comprises an inner circulation system and an outer circulation system, when the temperature of the cooling liquid in the engine cylinder body is lower than a preset first temperature threshold value, the inner circulation system is started, and the outer circulation system is closed, and when the temperature of the cooling liquid in the engine cylinder body is higher than the preset first temperature threshold value and lower than a preset second temperature threshold value, the inner circulation system is started; the inner circulation system and the outer circulation system are both started; and when the temperature of the cooling liquid in the engine cylinder body is higher than a preset second temperature threshold value, the outer circulation system is started, and the inner circulation system is closed. According to the dual-circulation cooling system, different cooling circulation systems are started for different temperature states of the engine, and the engine can exert the optimal stable performance through the coupling design of the water cooling system and the oil cooling system.

The application discloses a hot water system and a control method thereof, and relates to the field of water heaters. The hot water system comprises a first storage water heater and a second storage water heater which are provided with heating devices; the first storage water heater is provided with a first interface which is in communication with an inner cavity of the first storage water heater; the second storage water heater is provided with a second interface which is in communication with an inner cavity of the second storage water heater; a communication pipeline is arranged for connecting the first interface and the second interface; and a water pump is arranged on the communication pipeline and used for driving water heated by the heating device of the first storage water heater to flow to the second storage water heater through the communication pipeline, or driving water heated by the heating device of the second storage water heater to flow to the first storage water heater through the communication pipeline. The application can combine multiple storage water heaters for use, improve the hot water supply of a single storage water heater, and increase the water flow by using the water pump, thereby providing a more comfortable water use experience for users.

The present invention relates to the field of valve technology, and specifically to a multi-speed wastewater valve and water purification equipment. By arranging a valve seat with a water inlet cavity, a plurality of throttling holes connected to the water inlet cavity, and a plurality of water passages corresponding to the plurality of throttling holes, the plurality of water passages are arranged at intervals, so as to form a plurality of flow paths spaced from each other in the valve seat, and by setting the size of each throttling hole to be different, the flow rate of each flow path is different, and by arranging a water passage on the valve core assembly, the valve core assembly rotates around the axis and drives the water passage to selectively connect one of the water passages with the water outlet, so as to switch the flow paths with different flow rates, thereby adjusting the different net wastewater ratios, and thus providing a multi-speed wastewater valve capable of adjusting the net wastewater ratio.

The utility model relates to gas water heating equipment, which is characterized in that a pressurizing component is additionally arranged in the gas water heating equipment, and water in a water storage tank is directly conveyed into a water inlet pipe through a water pump. In the pressurization process, water in the cold water pipe flows out of the water inlet pipe, and the water pump can input water in the water storage tank into the water inlet pipe through the pressurization pipe so as to achieve pressurization. Due to the fact that water in the water storage tank is stored in advance, the water flow during bathing can be effectively increased and is not affected by external water pressure and water supply capacity, for example, the water pressure or the water supply capacity is insufficient, the pressurization effect is effectively improved, and the water use requirement of a user is met.

The utility model provides a pre-filter with a shunting waterway. The pre-filter comprises a filter shell and a filter element positioned in the filter shell, a first water inlet and a first water outlet are respectively formed in two ends of the filter shell; a second water inlet and a second water outlet are formed in the two ends of the filter element respectively, and the second water inlet and the second water outlet are correspondingly connected with the first water inlet and the first water outlet respectively; a third water inlet communicated with the second water inlet and a third water outlet communicated with the second water outlet are formed in the side wall of the filter element; a shunting water path is formed between the side wall of the filter element and the inner wall of the filter shell, and the third water inlet and the third water outlet are both communicated with the shunting water path. According to the utility model, the problems that the filter material is released too much and consumed too quickly in unit time can be solved, and meanwhile, the problems that the water resistance is increased and the water flow is reduced after the filter element is filled with the filter material can be solved.

The present invention discloses a pull-and-switch angle valve, comprising a first body, a second body, a plug, a sleeve, and a sealing gasket. The first body is provided with a through hole, one end of which is a water inlet end, and the other end is a water outlet end; the plug is fixed to the first body by a connecting rod, and a water gap is left between the plug and the water outlet end; the sealing gasket is fixedly arranged on the plug; the second body is provided with a through hole and a side hole, the through hole movably seals the water outlet end and the plug, and the side hole is located between the water outlet end and the plug; the sleeve movably seals and is inserted into the through hole and is fixedly connected to the second body. When the water channel is open, the sleeve is away from the sealing gasket; when the water channel is closed, the sleeve and the sealing gasket are pressed against each other and cooperate with each other in a sealing manner. The present invention controls the opening and closing of the water channel by pulling the second body, and has a simple structure, convenient operation, large water flow, and universal rotation.

A water outlet device of a constant-flow stepless temperature adjusting water purifier comprises a water outlet assembly and a faucet, the water outlet assembly and the faucet are connected through a cold water pipe and a hot water pipe, and a cold water outlet pump is installed on the cold water pipe; a hot water outlet pump is arranged on the hot water pipe; the water outlet temperature of the faucet is controlled by adjusting the rotating speeds of the cold water outlet pump and the hot water outlet pump. The water outlet assembly comprises a cold water tank and a hot water tank, a cold water temperature sensor and a cold water liquid level sensor are arranged in the cold water tank, and the cold water tank is connected with a cold water pipe of a faucet; a hot water temperature sensor, a hot water liquid level sensor and a heating body are arranged in the hot water tank, and the hot water tank is connected with a hot water pipe of the faucet. The hot water tank and the cold water tank contain water at different temperatures, the rotating speeds of the cold water outlet pump and the hot water outlet pump are adjusted through the controller, and then the water outlet temperature is adjusted by adjusting the flow of each water inlet. A double-frequency-conversion water supply centrifugal pump is adopted, a temperature sensor is combined, the water outlet flow is large, and the water supply temperature is accurate and adjustable.

The present invention discloses a filter element assembly and a filtering device thereof, belonging to the technical field of purifiers, comprising: a plurality of first cavities, the plurality of first cavities are arranged along the circumferential direction, the circumference of each first cavity is formed by enclosing a UF ultrafiltration membrane, each first cavity has a first inlet and a first outlet, and the first inlet of each first cavity is arranged adjacent to the first outlet of another first cavity. The present invention performs pre-filtration through a UF ultrafiltration membrane, and the filter element assembly adopts a circuitous flow channel in a cylindrical space, with a reasonable and compact structure, and increases the length of the UF ultrafiltration membrane. Under the condition of unchanged water volume, the flow rate is increased several times, the flow rate is greater, and the flushing is more thorough, which effectively prolongs the life of the UF ultrafiltration membrane and RO.

The utility model relates to a circular sealed photoelectric water flow sensor, which comprises a water passing pipe provided with a mounting port; a groove is formed in one end, extending into the mounting opening, of the detection assembly; the groove forms a first avoiding space; the signal generation assembly is packaged in the detection assembly and is used for generating an optical signal penetrating through the first avoiding space; the rotor is rotationally arranged in the groove and used for cutting the optical signal, and a part of the rotor is located in the water passing pipe. Through the structural arrangement, the signal generation assembly is packaged in the detection assembly, the detection of the fluid flow is realized by generating an optical signal and matching with the rotor, and the sealing performance is enhanced; through the arrangement of the sealing structure, the volume of the fluid in the water passing pipe is directly increased, larger fluid is allowed to flow to drive the rotor to rotate, and then the larger water flow of the fluid can be measured.

The invention discloses a high-temperature and high-pressure regulating valve, and relates to the technical field of valves, the high-temperature and high-pressure regulating valve comprises a mounting frame, a valve body, a regulating unit and a protection unit, the mounting frame is used for mounting and fixing the valve body, the valve body is used for mounting and fixing the regulating unit and the protection unit, and the regulating unit is used for self-adaptive regulation of flow; the protection unit is used for protecting the interior of the valve body from instantaneous impact of water flow, when the water flow enters the valve body, the adjusting unit is controlled to be started according to the magnitude of water pressure, so that adjustment of the water flow is controlled, and the function of self-adjustment of the water flow is achieved; the protection unit can be started under cooperation of the adjusting unit, so that high impact force brought by strong water flow is weakened through the protection unit, and the situation that the water flow with the strong impact force damages the interior of the valve body, and the service life is affected is avoided.

The utility model discloses a filtering assembly and a filtering device thereof, comprising: a separator, a first cavity, at least one second cavity and a third cavity which are separated from each other are arranged in the separator, an inlet and an outlet are arranged on the separator, the inlet is communicated with the first cavity, and the outlet is communicated with the third cavity; the two ultrafiltration membranes are arranged in a U shape, one end of one ultrafiltration membrane extends into the first cavity, the other end of the ultrafiltration membrane extends into the second cavity, one end of the other ultrafiltration membrane extends into the second cavity, and the other end of the other ultrafiltration membrane extends into the third cavity. According to the utility model, the glue filling times and parts are reduced through the structure of the U-shaped sub-cavity, so that the purposes of simplifying the manufacturing process and reducing the production cost are achieved.

The utility model relates to the technical field of heat pump water heaters, in particular to a heat pump hot water system with a multi-phase-change-point heat storage device, which comprises a heat pump host, the multi-phase-change-point heat storage device, a water tank, a large-flow pump, a small-flow pump, a first control valve and a second control valve. According to the scheme, the multi-phase-change-point heat storage device and the heat storage water tank are arranged in the system in a combined mode, different phase change points are adopted in partitions of the multi-phase-change-point heat pump heat storage device for heat storage, heat released by a heat pump is fully absorbed, the heat storage effect is good, heat exchange with the maximum logarithm temperature difference is achieved, the heat exchange amount is the maximum with the same heat exchange area, and therefore the heat exchange efficiency is improved. The volume of the water tank can be effectively reduced and the occupied area of the system is saved. When hot water is used, cold water can be stored firstly, the temperature of water entering the water tank is higher than that of tap water, the hot water utilization rate and water yield of the water tank are improved, and the unit energy efficiency is improved. And when the heat pump main machine does not produce hot water, trough electric heating heat storage can be adopted, the operation cost can be greatly reduced, and the actual operation energy efficiency of the unit is high.

The utility model relates to the technical field of heat exchange devices, in particular to a surface air cooler and an installation sleeve, which comprise a sleeve, the sleeve is round, a through groove is arranged above the sleeve, the surface air cooler is arranged in the sleeve, the cross section of the surface air cooler is fan-shaped, and the protruding position of the surface air cooler is close to the through groove of the sleeve. By arranging the sleeve, airflow enters from the through groove and is discharged from the two ends of the sleeve, the airflow is more concentrated, the cross section of the surface air cooler is fan-shaped, a cavity exists between the surface air cooler and the round sleeve, and airflow flowing is facilitated.

The invention discloses a water-saving agricultural canal irrigation and discharge dual-purpose water outlet, belonging to the field of water conservancy engineering, the water outlet comprises a middle frame, two sides of the middle frame are respectively connected with a rectangular frame and a drainage groove, the rectangular frame is installed on the side wall of the agricultural canal, the upper and lower parts of the middle frame are respectively provided with a water outlet hole and a drainage hole, and a valve plate is slidably connected in the middle frame, and the valve plate slides on the water outlet hole and the drainage hole; the middle frame is hinged with a swing plate on one side facing the farmland, and two side baffles are symmetrically slidably connected on both sides of the swing plate, and a plurality of diversion columns are hinged on the upper surface of the swing plate, when the valve plate slides from the water outlet hole to the drainage hole, the swing plate and the diversion column are both swung up, and the two side baffles slide toward the upper surface of the swing plate, so that the water flow is diverted by the diversion column and falls to the drainage groove. The invention can distribute the diverted water flow more evenly in the farmland by diverting the water and guiding the drainage groove, avoiding the soil erosion problem caused by the water flow directly impacting the ground.

The smoke exhaust device comprises a smoke exhaust pipe, a motor fan component is arranged on the inner side of the top of the smoke exhaust pipe, a protection frame is arranged on the inner side of the bottom of the smoke exhaust pipe, two fan rotating components are symmetrically arranged at the two ends of the bottom of the smoke exhaust pipe, and a water pump is arranged on one side of the smoke exhaust pipe; movable valve parts are arranged on the sides, close to each other, of the tops of the two fan rotating parts; a water conveying pipe is arranged on the side, close to the smoke exhaust pipe, of the water pump; two springs are symmetrically arranged at the two ends of the top of the movable valve part, and the bottom of one side of the movable valve part penetrates through the smoke exhaust pipe and is provided with a spray pipe part. By means of the structure, water can be sprayed to cool high-temperature smoke extracted by the motor fan component, the motor fan component is prevented from being overheated and burnt, meanwhile, in the cooling process, particulate matter in the motor fan component can be filtered out, the smoke exhaust pipe is prevented from being blocked, water can be sprayed according to the degree of a fire, and water resources are saved.