309 results about "Fluid output" patented technology

The invention relates to a cleaning device and a control method thereof, a computer program product, a computer readable storage medium, and a cleaning system. The cleaning equipment comprises a cleaning working part, a normal-temperature cleaning solution conveying flow path, a heater and a decontamination solution conveying flow path. The cleaning working part comprises a distribution part and a fluid output part; the normal-temperature cleaning liquid conveying flow path is configured to convey normal-temperature cleaning liquid to the distribution part; the input end of the heater is connected into the normal-temperature cleaning liquid conveying flow path at the first position of the normal-temperature cleaning liquid conveying flow path, and the output end of the heater communicates with the distribution part and / or the fluid output part and is used for conveying steam and / or hot cleaning liquid to the distribution part and / or the fluid output part; the decontamination liquid conveying flow path is connected to the normal-temperature cleaning liquid conveying flow path at a second position of the normal-temperature cleaning liquid conveying flow path and is used for conveying decontamination liquid to the normal-temperature cleaning liquid conveying flow path; wherein the first position is located at the upstream of the second position. The cleaning equipment has a good cleaning effect and high use reliability.

The invention relates to a cleaning device and a control method thereof, a computer program product, a computer readable storage medium, and a cleaning system. The cleaning equipment comprises a cleaning working part, a normal-temperature cleaning liquid conveying flow path and a steam conveying flow path. The cleaning working part comprises a distribution part and a fluid output part; the normal-temperature cleaning liquid conveying flow path comprises a liquid supply box, a first multi-way valve and a first liquid pump, the liquid supply box is used for storing normal-temperature cleaning liquid, the input end of the first liquid pump is communicated with the first multi-way valve, and the output end of the first liquid pump is used for conveying the normal-temperature cleaning liquid to the distribution part; the steam conveying flow path comprises a second liquid pump and a heater, the input end of the second liquid pump is communicated with the first multi-way part, and the output end of the second liquid pump is communicated with the fluid output part; wherein first circulation resistance exists between the first multi-way valve and the first liquid pump, second circulation resistance exists between the first multi-way valve and the second liquid pump, and the first circulation resistance is larger than the second circulation resistance. The cleaning equipment has a good cleaning effect and high use reliability.

The utility model discloses a nozzle which comprises a base body, a plurality of nozzles, a plurality of nozzles and a plurality of nozzles, the base body is internally provided with a channel for fluid to pass through, and the inlet end of the base body is provided with a connecting part which is communicated with a fluid source; the supporting part extends in the fluid output direction, and one end of the supporting part is connected with the outlet end of the base body; the flow dispersing piece is detachably connected with the other end of the supporting part, and the flow dispersing piece and the outlet end of the base body are arranged in a spaced mode in the fluid output direction; the supporting part is provided with a plurality of gaps at intervals in the circumferential direction, and when the fluid is output to the flow dispersing piece through the channel, the flow dispersing piece can disperse the fluid so that the fluid can be output through the gaps. According to the utility model, the impact force and flow velocity of direct injection steam on tobacco leaves can be reduced, so that the consumption of the tobacco leaves is reduced, and the production cost of tobacco leaf processing is reduced.

A high-temperature and high-pressure core displacement test system includes a CT scanner configured to perform CT scanning, a gripper system configured to grip a core, a machine tool configured to move the gripper system to the CT scanner for CT scanning, a gripper load control system configured to heat and input a fluid into or / and receive a fluid output from the gripper system, and an acquisition and data analysis system configured to acquire a temperature and a pressure within a core gripping cavity, and detection data of the CT scanner and strain rosettes for analysis. According to the high-temperature and high-pressure core displacement test system and method, the strength of the gripper system in a high-temperature and high-pressure environment is improved, the projection performance of CT rays is ensured, and the optical fiber positioning precision and the core deformation measurement precision in a CT rapid scanning state are improved.

The invention discloses a self-suction type magnetic suspension pumping device which comprises a magnetic suspension pump, a self-suction pump and a controller, the magnetic suspension pump comprises a pump head and a magnetic suspension motor, the pump head is provided with a first inlet and a first outlet, the self-suction pump is provided with a second inlet and a second outlet, and the second inlet of the self-suction pump is connected with the first outlet of the magnetic suspension pump in series; the controller is configured to control the working states of the magnetic suspension pump and the self-priming pump, and the self-priming pump is configured to suck a medium in a pump head of the magnetic suspension pump to form negative pressure, so that to-be-conveyed fluid enters the pump head through the first inlet, and the magnetic suspension pump completes self-priming; after the magnetic suspension pump completes self-absorption, the output fluid is subjected to follow flow through the follow flow bypass; or after the magnetic suspension pump completes self-priming, the output fluid flows through the straight-through flow channel of the self-priming pump. According to the invention, the self-absorption function of the magnetic suspension pump is realized on the premise of not influencing the original performance of the magnetic suspension pump and not introducing particulate matter pollution or increasing shear force in the ultra-clean environment application of biological medicine or semiconductor manufacturing and the like.

The invention discloses a low-pulsation steady flow pressure system, which relates to the technical field of fluid transportation and control, and comprises a series / parallel double-pump module, a filter, a pulsation damper, a sensor and a control center, the series / parallel double-pump module, the filter, the pulsation damper and the sensor are sequentially connected in series, and the control center is connected with the filter. The control center is in circuit connection with the serial / parallel double-pump module and the sensor; the series / parallel double-pump module consists of two micro diaphragm pumps and is used for generating complementary pulsation fluid output; by arranging the series / parallel double-pump module, the filter, the pulsation damper, the sensor and the control center, the flow pulsation is remarkably reduced through the complementary effect of the double pumps, and the output stability is improved; dynamic adjustment is achieved through closed-loop feedback control of the control center, and the response speed is increased; due to the design of the compact pulsation damper, the size of the system is reduced, and integrated installation is facilitated.

The utility model discloses a spray head for a vehicle wiper, which aims to solve the problem that the spray head is mounted on the wiper to be used, and realizes the technology that the spray head swings along with a wiper blade, and complex stains on a windshield are not thoroughly cleaned in a short-distance spraying manner. The spray head comprises a main body and a nozzle, a plurality of area channels allowing fluid to pass through are arranged in the main body, the diameters of the area channels are gradually reduced in the flowing direction of the fluid, the area channels are communicated to form a jet flow channel, and the jet flow channel is provided with an input end allowing the fluid to pass through and a fluid output end. The diameter of the output end is smaller than that of the input end. According to the relation of the position, the distance, the motion trail and the like of the windshield wiper and windshield glass, the ultra-small spray head suitable for being installed on the windshield wiper is designed, and the technical parameters of the spray liquid shape, the spray angle, the sector angle, the installation position, the spray flow, the water outlet pressure and the like of the spray head are suitable for being installed on the windshield wiper for use. The windshield wiper can thoroughly clean complex stains on the windshield glass.

A pressure exchange chamber, the pressure exchange chamber comprising: a pressure exchange chamber tube (12), the pressure exchange chamber tube extending around a periphery; a drive fluid input valve (44) and a drive fluid output valve (46), both valves being enclosed by the pressure exchange chamber tubes; and a slurry input valve (34) and a slurry output valve (36), both valves being enclosed by the pressure exchange chamber tubes. Also disclosed is a hydraulic ore lifting system (HOHS) for the ocean comprising a plurality of such pressure exchange chambers.

The invention provides a heavy oil reservoir steam huff and puff physical simulation experiment device and method, the heavy oil reservoir steam huff and puff physical simulation experiment device comprises an injection system, an output metering system, a physical model device and an energy storage system, the physical model device simulates a heavy oil reservoir steam huff and puff well; the injection system is connected to the physical model device and injects various fluids into the physical model device, the output metering system is connected to the physical model device and separates and meters the quantity of fluids output by the physical model device, and the energy storage system is connected to the physical model device so as to simulate the supply boundary of a stratum. According to the physical simulation experiment device and the physical simulation experiment method for steam huff and puff of the heavy oil reservoir, energy supply of temperature field waves and stratums is simulated according to steam waves and conditions, so that the saturation change conditions of reservoirs after steam huff and puff are simulated, and the physical simulation experiment device and the physical simulation experiment method are used for researching remaining oil occurrence rules after steam huff and puff.

Cooling structure for a battery pack, characterized in that the cooling structure for the battery pack comprises: a cooling plate assembly provided inside the battery pack, wherein the cooling plate assembly comprises a first cooling plate and several second cooling plates connected to the first cooling plate; wherein the first cooling plate is connected to the lower housing of the battery pack and a flow channel is formed inside the first cooling plate, which is connected to the second cooling plate; wherein the first cooling plate rests against the cell modules inside the battery pack and the second cooling plate is each connected to the busbars of each of the cell modules; and a liquid inlet opening and a liquid outlet opening, each connected to the flow channel;wherein the coolant is able to flow successively through each of the second cooling plates via the inlet opening and the flow channel and be discharged through the liquid outlet opening.

The invention relates to the technical field of fuel cells, in particular to a modular assembly type hydrogen fuel cell which comprises at least two fuel cell modules, each module comprises a cell stack, a lower end plate and an upper end plate, the cell stack is provided with a fluid input channel and a fluid output channel, the lower end plate is provided with a first fluid cavity communicated with the fluid input channel, and the upper end plate is provided with a second fluid cavity communicated with the fluid output channel. The upper end plate is provided with a second fluid cavity communicated with the fluid output channel, the peripheral side of the upper end plate is provided with an upper connecting groove, and the peripheral side of the upper end plate is provided with an upper connecting strip used for connecting the adjacent upper end plate; an upper fluid communication port communicated with the adjacent second fluid cavity is formed in the upper connecting strip, hydrogen and oxygen flow through the first fluid cavity, the fluid input channel, the cell stack reaction cavity, the second fluid cavity and the fluid output channel in sequence, stable connection between modules and continuity of a working fluid channel are achieved through the upper connecting strip and the lower connecting strip, and additional complex pipeline arrangement is avoided.

The utility model relates to cleaning equipment and a cleaning system. The cleaning equipment comprises a cleaning working part and a heater. The cleaning working part comprises a cleaning piece and a fluid output piece, and the fluid output piece is located in front of the cleaning piece; the heater is used for heating the cleaning liquid to generate hot cleaning liquid or steam; the cleaning equipment has a steam cleaning mode and a powerful cleaning mode; in the steam cleaning mode, the steam is conveyed to a surface to be cleaned through the fluid output piece; and in the powerful cleaning mode, the hot cleaning liquid is conveyed to the surface to be cleaned through the fluid output piece. The cleaning equipment and the cleaning system have a good cleaning effect.

The invention provides a pumping unit and a fluid balancing method, and belongs to the field of petroleum extraction machinery. The pumping unit comprises a base, a supporting seat is fixedly installed on the base, and a motor, a speed reducer and a support are installed on the supporting seat. The walking beam is connected with the bracket through a bearing seat; an output shaft of the speed reducer is connected with the walking beam through a crank and a connecting rod of the four-rod mechanism; the two ends of the walking beam are connected with a first horse head and a second horse head respectively, the first horse head and the second horse head are communicated through a connecting pipe arranged between the first horse head and the second horse head, an electric valve is arranged on the connecting pipe, and an electric cabinet is further arranged on the supporting seat and electrically connected with the electric valve. The oil pumping unit is used for two oil wells close to each other, the function that one oil pumping unit pumps two oil wells is achieved, the equipment investment of one oil pumping unit can be saved, the running loss of one oil pumping unit is reduced, and fluid balance is used for balancing the load difference of the two oil wells; after the balance box is arranged on the second horse head, the second horse head can be only used for pumping oil of one oil well, and fluid balance is used for weight difference between the oil well and the balance box.

An actively-cooled heat shield system includes a heat shield, a tank, a pump, a heat exchanger, and a turbine. The heat shield defines a windward side of a vehicle. The tank stores a coolant. The pump receives the coolant from the tank and outputs a pressurized coolant. The heat exchanger is integrally connected with the heat shield. The heat exchanger receives the pressurized coolant from the pump, transfers heat from the heat shield to the pressurized coolant to generate a heated fluid, and outputs the heated fluid. The turbine includes an inlet, a shaft, and an outlet. The inlet receives the heated fluid output from the heat exchanger. The shaft is coupled to the pump and includes turbine blades. The shaft rotates and powers the pump when the heated fluid received from the heat exchanger acts on the turbine blades. The outlet outputs the heated fluid.

A flexible bioprocessing vessel includes at least six side panels forming sides of the flexible bioprocessing vessel, a top panel adjoining the at least six side panels, the top panel forming a top of the flexible bioprocessing vessel, a bottom panel adjoining the at least six side panels, the bottom panel forming a bottom of the flexible bioprocessing vessel, the at least six side panels, top panel, and bottom panel defining an interior cavity configured for processing a fluid, the at least six side panels joined together via vertical welds. The vessel further includes at least one fluid input and at least one fluid output for adding and removing fluid to and from the interior cavity respectively. Wherein the flexible bioprocessing vessel is configured for use within a rigid support structure having a cylindrical interior.

The utility model relates to the technical field of water treatment equipment, and provides a runner connecting assembly and a water softener, the runner connecting assembly comprises a runner part and a resin barrel, the runner part is provided with a first runner and a second runner, the first runner is provided with a first connecting port for fluid input or fluid output, and the second runner is provided with a second connecting port for fluid output; the second flow channel is provided with a second connector used for fluid input or fluid output. The resin barrel is provided with a barrel body part and a center pipe, the center pipe is located in the barrel body part, and the barrel body part is used for being filled with resin particles; wherein the barrel body part and the flow channel part are integrally formed, the first connecting port is communicated with the peripheral part of the barrel body part through a first flow channel, and the second connecting port is communicated with the central pipe through a second flow channel. According to the utility model, the resin barrel and the flow channel part are integrally formed, so that the assembly process of the resin barrel is reduced, the two internal flow channels are communicated with the resin barrel to form a circulation loop, the whole structure is simple, the preparation difficulty of the flow channel part is reduced, and the manufacturing cost is reduced.

The invention discloses an asymmetric coaxial double-crank plunger pump constant-pressure motion control method based on a PLC (Programmable Logic Controller), which comprises the following steps of: determining a connecting rod working displacement function of a connecting rod plunger connecting part in a working process according to mechanical parameters of a coaxial double-crank plunger pump; calculating a first-order derivative of the working displacement function of the connecting rod; determining a crank driving side angular velocity function according to the piston superposition output velocity; performing phase shifting on the crank driving side angular velocity function rightwards for a preset radian to obtain a target angular velocity function; and taking the target angular velocity function as a driving angular velocity function of the PLC. The driving motor is controlled to drive the asymmetric double-crank plunger pump to work through the crank driving side angular velocity function based on the PLC, so that the stacking velocity of the two pistons is a constant value, the flow of fluid output by the plunger pump is constant, the pressure of a pump outlet is also constant, and the working efficiency is improved. And the requirement of constant fluid flow required by an automobile spraying process can be met.

Embodiments of systems and methods for enhancing control of a distillation operation are disclosed. The method includes obtaining data for a plurality of ongoing and continuous distillation operations from one or more of (a) a plurality of sensors or (b) a plurality of analyzers configured to analyze fluid output via the distillation operations. The method may include determining one or more parameters for each one or more of one or more distillation columns or distillation control devices based on application of the data to a machine learning model. The method may include in response to determination of the one or more parameters, operating each of the one or more distillation columns or distillation control devices based on the one or more parameters, thereby to enhance operation of the one or more distillation column.

The present invention discloses an integrated experimental device and method for shale gas core fracturing and displacement. The experimental device includes an input system, a core holder, an output system, and a metering system. The core holder is provided with a core, and threaded core fixtures are provided at both ends to secure the core. A hollow metal needle is axially inserted through the core fixture, one end of the metal needle is embedded in the core, and the other end is connected to the input system or the output system. The input system includes a liquid carbon dioxide input system and a fracturing fluid input system arranged in parallel. The output system is used to collect the fluid output by the core holder. The metering system includes a first pressure gauge, a second pressure gauge, and a flow meter. The present invention can create fractures in the core through the liquid carbon dioxide input system and the metal needle, simulating the perforation of a reservoir by a real gas well, and simulates the hydraulic fracturing process through the fracturing fluid input system.

The utility model discloses an oil removal system for nickel sulfate liquid. The oil removal system comprises a filtering structure and a plurality of oil removal tanks, the multiple oil removal tanks are sequentially communicated, and a solution in the oil removal tank at one end can flow into the oil removal tank at the other end; the filtering structure is communicated with the oil removal tank located at the tail end of the solution flowing direction and used for intercepting oil absorption materials in fluid output by the oil removal tank at the tail end of the solution flowing direction. According to the scheme, the adsorption material and the nickel sulfate solution to be subjected to oil removal can be continuously added into the liquid inlet tank, and when the adsorption material and the nickel sulfate solution sequentially flow among the multiple oil removal tanks, the adsorption material can be in full contact with oil, the oil absorption effect is guaranteed, oil can be continuously removed, and the oil removal efficiency of the nickel sulfate solution is improved.

The present application relates to a kind of energy storage device and energy storage utilization method thereof.Energy storage device includes j Cold / Heat Storage Filling Bed, low-temperature end fluid input main pipeline, low-temperature end fluid output main pipeline, j Low-temperature end fluid access branch pipeline corresponding to Cold / Heat Storage Filling Bed, high-temperature end fluid input main pipeline, high-temperature end fluid output main pipeline, j High-temperature end fluid access branch pipeline corresponding to Cold / Heat Storage Filling Bed, j-1 Or j Series pipeline, low-temperature end fluid input main control valve, low-temperature end fluid output main control valve, j Low-temperature end fluid access control valve, high-temperature end fluid input main control valve, high-temperature end fluid output main control valve, j High-temperature end fluid access control valve and j-1 Series control valve.Energy storage utilization method is applied to the above-mentioned energy storage device, including cold energy storage method, cold energy utilization method, heat energy storage method and heat energy utilization method.The present application can be conveniently recycled to realize energy storage and utilization, and be beneficial to energy saving.

The utility model discloses a pneumatic feed output device which solves the technical problem that the consistency of the feed quantity output by two paths of a pneumatic feed supply device is poor. The mixing connector is used for mixing feed and carrier airflow to form mixed fluid and outputting the mixed fluid, and a feed supply port, a carrier airflow supply port and a mixed fluid output port are formed in the mixing connector. The feed supply port and the carrier airflow supply port are respectively communicated with the mixed fluid output port to form a mixed feed output channel, the feed supply port is used for being connected with a feed supply source, and the carrier airflow supply port is used for being connected with a carrier airflow supply source; the material mixing joint is provided with two material mixing output channels which are symmetrically arranged left and right, and the two material mixing output channels are in one-to-one correspondence with the independent mixed fluid output ports. Mixed fluid output through the two mixed material output channels which are symmetrical left and right has high consistency in quantity, pressure and composition proportion.

The application discloses an energy-saving heat exchanger and belongs to the technical field of heat exchange equipment. The energy-saving heat exchanger comprises a shell, upper and lower end sleeves are respectively arranged at two ends of the shell, and a heat conduction pipe is arranged in the shell. A low-temperature fluid input port and a low-temperature fluid output port are arranged on the shell. Steam input ports and steam output ports are respectively arranged on the upper and lower end sleeves. A spiral propeller driven by fluid impact force drives a drain pipe to rotate, the drain pipe drives a scraper to rotate, the scraper pushes condensate water adhered to the inner wall of the heat conduction pipe, the condensate water on the inner wall of the heat conduction pipe is gathered together to form water drops with a larger volume, the water drops flow along the side wall of the scraper to the flow guide groove under the action of gravity of the water drops, the water drops flow to the drain pipe along the flow guide groove arranged in a slope, and then the water drops are discharged into a space below a partition plate in the lower end sleeve through the drain pipe. The energy-saving heat exchanger accelerates the transfer rate of the condensate water on the inner wall of the heat conduction pipe, increases the contact probability of steam and the heat conduction pipe, and improves the heat exchange effect.

Provided are a fluid pumping unit and an oral cavity cleaning appliance comprising a housing, a displacement unit, and a linkage unit. The displacement unit is movably arranged in the housing, and the end face of the displacement unit toward the first direction and the inner wall of the housing define, in an enclosing manner, a fluid pump cavity with a variable volume. The linkage unit is arranged in the shell and connected with the end face of the displacement unit toward the second direction, and the linkage unit is suitable for driving the displacement unit to reciprocate in the first direction and the second direction so as to cyclically increase and reduce the volume of the fluid pump cavity, so that liquid in the container is pumped into the fluid pump cavity through a fluid input channel and pumped out through a fluid output channel to provide an impact fluid, wherein two extreme positions are present during the reciprocating movement process of the displacement unit in the first direction and the second direction; the distance between the two extreme positions ranges from 2.1 mm to 2.6 mm, and the volume of the liquid pumping cavity ranges from 120 mm 3 to 165 mm 3.

The utility model discloses a gas-liquid separation device with a cyclone cavity and cleaning equipment, the gas-liquid separation device is internally provided with a containing cavity, the containing cavity is internally provided with a separation barrel, the separation barrel is provided with a filtering cavity and the cyclone cavity, the filtering cavity is provided with a first outlet communicated with the containing cavity, and a mixture passes through the filtering cavity to separate solids from fluid; a fluid is discharged into the containing cavity through the first outlet for primary separation, the cyclone cavity is provided with a tangential first inlet, a cyclone column is arranged at the center of the cyclone cavity, the fluid in the containing cavity enters the cyclone cavity through the first inlet for secondary separation, and solid-liquid separation is conducted on the fluid with solids through the filtering cavity. The fluid is discharged into the containing cavity to be subjected to gas-liquid separation under the action of gravity, most of the liquid is reserved in the containing cavity, and the fluid with a small part of the liquid enters the cyclone cavity to be subjected to secondary separation, so that the separation efficiency is greatly improved.

A heating system comprising: a liquid supply system; a cell configured to: receive liquid from the liquid supply system, provide heating thereof, and output heated fluid; a work extraction system configured to extract useable work from heated fluid output from the cell; wherein the cell comprises: (i) a housing arranged to define an internal portion for receiving liquid to be heated, and (ii) a plurality of electrodes configured to apply electrical energy to fluid in the internal portion; and wherein the electrodes are configured to apply electrical energy to said fluid in the internal portion to generate one or more bubbles of plasma for releasing energy into said fluid in the internal portion and the housing to provide heating of the fluid in the internal portion.

The present invention relates to the technical field of energy-saving pumps, and in particular to an energy-saving pumping fluid output system, which is used to solve the problem that when the cleaning fluid is circulated, the existing system is not easy to adjust the cleaning time and the cleaning fluid supply speed according to the permeability of the filter; the cleaning system contains a conveying and placing mechanism, two screws are arranged in the cleaning box, and the feeding plate cooperates with the screws through threaded holes. The brush plate of the cleaning mechanism has bristles and a nozzle, and its end block is connected to the screw swing plate. In addition, the filter box and the cleaning box are separated by a filter. The water pump draws liquid from the filter box through a liquid suction pipe to supply the nozzle. When impurities cause the filter to be blocked and the liquid level in the filter box drops, the screw and the water pump slow down, thereby extending the stay time of the brake pad in the cleaning box. The staff can replace the cleaning fluid and clean the filter accordingly to ensure the effective operation of the system.

The present invention discloses an integrated system for heavy oil injection and production by using a small oil pipe to launch and salvage an electric pump, comprising an outer heat injection string and an inner production string, wherein the production string comprises a small oil pipe, an electric submersible pump connector, and an inverted electric submersible pump from top to bottom, and the electric submersible pump connector is provided with a second guide flow hole. The present application involves less ground operation equipment, high operation efficiency, and saves operation resources and costs; a small oil pipe is selected as the output fluid output channel to avoid fluid immersion and scouring in the annulus between the inner production string and the outer heat injection string, thereby protecting the thermal insulation performance of the insulated oil pipe and the insulation performance of the cable, and reducing the risk of failure; the electric submersible pump unit adopts an inverted pump design, and the cable is directly connected to the electric submersible pump motor after passing through the upper production packer, reducing the risk of cable crushing and improving the operating stability of the electric submersible pump in highly deviated wells; the small oil pipe has a strong launching and salvaging capability, and can realize launching and salvaging of the electric submersible pump in highly deviated wells and horizontal wells.

The present disclosure relates to a mixer for fluids. The mixer comprises a first pipeline for limiting a first accommodating cavity; the first fluid inlet is communicated with the first accommodating cavity, so that first fluid enters the first accommodating cavity through the first fluid inlet; a second containing cavity is defined by the second pipeline, at least part of the second pipeline extends into the first containing cavity, at least part of the second pipeline comprises a fluid output part, and the fluid output part comprises a plurality of first through holes communicating with the second containing cavity and the first containing cavity; the second fluid inlet is communicated with the second accommodating cavity, so that second fluid enters the second accommodating cavity through the second fluid inlet; the fluid outlet is used for outputting the mixed fluid; and the driving unit is configured to drive the second pipeline to rotate relative to the first pipeline. According to the technical scheme disclosed by the invention, the mixed fluid can be fully mixed, so that the formation of uniformly mixed fluid is facilitated.