280results about How to "Fast water" patented technology

A beverage system for selectively delivering, in a same coffee extraction device, short coffee liquid extracts and long coffee liquid extracts comprising: cartridges containing ground coffee; a receiving device for receiving one cartridge at a time and pumping means or injecting water under pressure in the cartridge; means for opening the cartridge wherein these means comprises retaining means to retain the liquid under pressure in the cartridge and engaging means which engage the retaining means to open the cartridge and deliver the coffee liquid extract; wherein the system comprises at least a first cartridge adapted to deliver a short coffee liquid extract, wherein the system comprises at least a second cartridge which has substantially the same external configuration and shape as the first cartridge so as to be capable of being received in the same receiving device as the first cartridge and which is adapted to deliver a longer coffee liquid extract upon allowing a larger amount of water to flow there trough, wherein the second cartridge for the longer coffee liquid extract is configured so that water flows through it at a higher rate than in the first cartridge during extraction.

The invention discloses a method for processing and separate recycling of printing and dyeing wastewater, which comprises the following steps: after the printing and dyeing wastewater is firstly processed by an anaerobic reactor, a hypoxia reactor and an aerobic reactor, the separate recycling of part of the water is used for a desizing process of printing and dyeing technology; then, after the rest wastewater is processed by an aerator biofilter, the separate recycling of the part of the water is used for a boiling-off process of the printing and dyeing technology; then, after the rest wastewater is processed by an ultrafiltration reactor, the separate recycling of the part of the water is used for bleaching process and mercerization process of the printing and dyeing technology; finally, the rest water is processed by an anti-permeability reactor and the separate recycling of the part of the water is used for dyeing process, printing process and ordering process. After being processed by the invention, the printing and dyeing wastewater can be carried out the separate recycling quickly and high-efficiently and the recycling rate of the wastewater reaches more than 70 percent; meanwhile, the fee of processing and recycling the wastewater can be saved; the service life of advanced treatment equipment can be prolonged, which is easy for a large-scale industrialized application.

The invention discloses a method and device for simulating axial interaction between an undersea pipe system structure and a seabed soil body. The method includes the following steps that a model pipeline is selected, counterweight is conducted on the model pipeline according to the requirement, and then a tension sensor for measuring axial sliding resistance of the model pipeline is installed in the model pipeline; a water tank is selected, and a simulated seabed with the needed slope is manufactured in the water tank; a guide restraint device is installed on the model pipeline, the model pipeline is made to horizontally move only in the axial direction of the model pipeline and the direction perpendicular to the bed surface of the simulated seabed, meanwhile a displacement measurement device for measuring displacement of the model pipeline in the axial direction of the model pipeline and the direction perpendicular to the bed surface of the simulated seabed is installed on the guide restraint device, and the model pipeline is arranged on the simulated seabed; axial loading is conducted on the model pipeline, the model pipeline is made to axially slide, and meanwhile a data synchronous acquisition system is used for synchronously acquiring measurement data. An ideal means is provided for research on axial interaction between an undersea pipeline and the seabed.

The invention relates to a filed track, comprising primary tracks and auxiliary tracks, wherein, the primary tracks are a plurality of longitudinal tracks which are arranged in parallel at the filed with equal row space, the auxiliary tracks are a plurality of tracks which are arranged at the two ends of the filed in parallel, and the end face distances of the auxiliary tracks and the primary tracks are constant; shifters are arranged at the auxiliary tracks, the bottom of each shifter is provided with shifting wheels capable of traveling on the auxiliary tracks, and the upper part of each shifter is provided with a transitional track which is in butted joint with the primary tracks; the height of the transitional tracks is equal to the height of the primary tracks, and the structure of the transitional tracks is the same as the structure of the primary structure. The invention also provides a production operation mainframe capable of operating on the field tracks and a water spray type watering machine. A bracket type agricultural manufacturing machine mainframe is formed by arranging various functional machines at the production operation mainframe scientifically and reasonably. The water machine has even and dense water amount, thereby avoiding the defects that the growth of crops is affected by decreased temperature of the ground, and fertilizer leaks and is lost with the water and can not be absorbed by crops due to broad irrigation.

The invention discloses a vertical automatic squeezer which comprises a vertical frame, an up-and-down through squeezing barrel, a pulp barrel, an upper hydrocylinder of which the piston rod can extend into the squeezing barrel, a platen and a mobile blocking disk, wherein the platen compresses the squeezing barrel to obtain a dry matter. The vertical automatic squeezer has the advantages of high production efficiency, low energy consumption and low water content of the dry matter. The invention also discloses a horizontal automatic squeezer which comprises a horizontal frame, a left-and-right through squeezing barrel, a general hydrocylinder, a platen, a left feed plate, a right feed plate, a left mobile blocking disk, a right mobile blocking disk, a left hydrocylinder and a right hydrocylinder, wherein the left and right mobile blocking disks respectively penetrate through the middle parts of the feed plates. The horizontal squeezer not only has the advantages in the vertical squeezer, but also has the advantage of higher production efficiency.

The invention discloses a fertilizing and watering device for agricultural Internet of Things and a use method. The fertilizing and watering device comprises a water box, a fertilizer box, a quantifying box, a mixing box and a transmission cavity. The transmission cavity is fixedly installed at the upper end of a base, the upper end of the transmission cavity is fixedly connected with the mixing box through symmetrically-arranged supporting rods, the upper end of the mixing box is communicated with the quantifying box through a second communicating pipe, a second electromagnetic valve is arranged in the second communicating pipe, and the water box and the fertilizer box are arranged at the left end and the right end above the quantifying box respectively. A rotary shaft is arranged in themixing box, and one end of the rotary shaft is rotationally connected to the inner wall of the mixing box. The effects of timely fertilizing, easy and convenient operation and convenient watering areachieved, when the device is used for watering and fertilizing, operation is easy, the power consumption is low, watering and fertilizing can be rapidly achieved, the operation time is shortened, a sprayer is driven to swing up and down when a rotary wheel rotates in a reciprocating mode, and therefore the spraying range of fertilizer or water is widened.

The invention discloses a supporting watering device for planting saplings, which comprises a base plate, a support plate and a cross bar. Connected with the tight spring, the inside of the crossbar is provided with a strip hole along its length direction, the strip hole is provided with a slider slidingly connected with its side wall, the outer side wall of the arc-shaped clamp is provided with a hook, and the support frame A horizontal shaft is provided, and a winding roller is provided on the horizontal shaft, and a rotating disk is provided at one end of the horizontal shaft; a water storage tank is also provided on the base plate, and the water storage tank is fed into the water pump provided on the support plate through a pipeline. The water ends are connected, and the side of the support plate close to the cross bar is fixedly connected with a water spray frame, and a plurality of water spray heads are installed on the water spray frame. The structure of the invention is simple, and one person can plant saplings to speed up the efficiency of planting saplings. , to ensure the upright planting of the saplings, to facilitate the watering of the saplings, easy to operate, and strong in practicability.

The invention discloses a quick dehydration and drying device for a textile fabric and relates to the technical field of textile machinery and equipment. The quick dehydration and drying device for the textile fabric comprises a box body, wherein a motor is fixedly connected to the bottom of the inner wall of the box body, the surface of a motor output shaft is sleeved with a first belt wheel, a first supporting rod is fixedly connected to the left side of the bottom of the inner wall of the box body, the top end of the first supporting rod is in rotary connection with a first rotary rod, thesurface of the first rotary rod is sleeved with a second belt wheel, the surface of the second belt wheel is in driving connection with the first belt wheel through a belt, and an extruding device isfixedly connected to the back surface of the second belt wheel. The quick dehydration and drying device for the textile fabric achieves the textile fabric dehydration purpose and reduces the moisturecontent before textile fabric drying, the problems of longer drying time and lower working efficiency of drying devices in the market at present are solved, energy waste is reduced, and the actual service life of the drying device is prolonged.

The invention discloses a fire hydrant intelligent detection device which comprises a detection device clamped on the output pipeline of a fire hydrant, wherein a through hole is formed in the output pipeline; a flow meter and a pressure gauge are arranged in a mode of running through the through hole; the flow meter and the pressure gauge are arranged inside the output pipeline; the upper ends of the flow meter and the pressure gauge are connected to the detection device in a transmitted manner; a solar panel is arranged at the upper end of the detection device; the detection device is a remote terminal unit (RTU) control cabinet; an integrated data processing chip, a global positioning system (GPS) positioning module, a wireless transmission module and a solar power supply module are arranged inside the RTU control cabinet; and the output end of the wireless transmission module is in wireless transmission with a control platform. By changing a conventional consumption valve connecting mode, the detection device disclosed by the invention is rapid in water discharge and convenient in assembling and disassembling; the detection device can be monitored and maintained timely in the case of water leakage and can position the positions of all fire hydrants in cities, and the detection device has functions of detecting the existence of water, water leakage and water stealing as well as identifying alarm; so that the detection device is safe in using.

The invention relates to the technical field of household appliances, in particular to an intelligent time-sharing control method of hot water circulation and a gas water heater. The intelligent time-sharing control method of hot water circulation comprises the steps that through an intelligent circulation mode, the heating time and preheating temperature of water are recorded and updated at different times in a preheating procedure so as to optimize the preheating procedure, the optimized preheating procedure is started during re-preheating at the same time period, and preheating at different times during many times of water utilization and preheating suspension carried out when no water is utilized are achieved. The gas water heater is further provided. The intelligent time-sharing control method of hot water circulation is adopted for preheating. The gas water heater comprises a shell. A heat exchange device, a circulation device, a water flow regulation device, a control device and a temperature induction device are mounted in the shell. The control device is connected with the heat exchange device, the circulation device, the water flow regulation device and the temperature induction device. Time-sharing control can be intelligently achieved according to the living habits of users when a hot water system operates, and energy and water are saved.

The invention discloses a method for breeding fishes with net cages capable of separating fishes of different sizes. The method comprises the steps that firstly, an inner net cage and an outer net cage are provided, wherein the inner net cage is arranged inside the outer net cage and located at one corner of the outer net cage, the diameter of each mesh of the inner net cage is 3-7 cm, the upper side of the inner net cage is connected with a first feeding pipe, the first feeding pipe is located in the middle of the upper side of the inner net cage, an upper end cover of the outer net cage is connected with a second feeding pipe, and the second feeding pipe is located at another corner of the outer net cage; secondly, fry are bred in the outer net cage; thirdly, when the chest circumferences of all the fry do not reach the diameter of each mesh of the inner net cage, the first feeding pipe is used for feeding fish feed to the inner net cage, and when the chest circumferences of some fry exceed the diameter of each mesh of the inner net cage, the fry are limited by the inner net cage from swimming into the outer net cage, the second feeding pipe is used for feeding feed to the outer net cage, and feeding lasts for 20-30 minutes. By the adoption of the method, the fishes of different sizes can be separated, and the possibility that the fishes of small sizes are attacked is lowered.

The invention discloses a sampler for aquaculture seawater, which comprises a base, a cylinder arranged on the base, a cylinder cover matched with the cylinder body and a sealing cap. The cylinder cover is provided with a filtration pore in the bottom, a counterweight block is arranged at the bottom of the base, the cylinder body is provided with a handle at the upper portion, and the handle is connected to a lifting rope, the cylinder body is further provided with a water outlet nozzle at the lower part of the cylinder body, a water outlet nozzle cap is arranged at an outlet of the water outlet nozzle; a limiting convex ring is arranged on the upper portion of the inner wall of the cylinder in a circumferential direction, a water inlet is formed in the gap formed at the middle of the limiting convex ring, the limiting convex ring is fixedly provided with a spring seat below, which is sleeved with a spring, a spring limiting groove is formed in the bottom surface of the sealing cap, the upper end of the spring is located in the spring limiting groove and fixedly connected with the sealing cap, and the lower end of the spring is fixedly connected with the spring seat. The sealing cap is located in the water inlet when the spring is in a natural state, and the side surface of the sealing cap is in sealed fit with the water inlet. The sampler for aquaculture seawater is novel andingenious in structure, convenient to use and carry, good in flexibility of use, convenient and fast in water collection, and water samples collected are difficult to spilled out.

The invention discloses an extra large-caliber fire fighting hose. The fire fighting hose consists of a hose blank and a composite layer, wherein the hose blank is tubular; the composite layer is arranged on the inner side of the hose blank; the hose blank is formed by braiding fibers; the composite layer is formed by performing double-mould co-extrusion on a thin-walled polyurethane bonding layer and a polyurethane waterproofing layer; and a thickness ratio of the thin-walled polyurethane bonding layer to the polyurethane waterproofing layer is 1:2-1:3. The composite layer also can be arranged on the outer surface of the hose blank. The invention also provides a preparation method for the extra large-caliber fire fighting hose. The extra large-caliber fire fighting hose is easy to fold and convenient to pave, is high in pressure resistance and water outlet amount, and is hydrolysis resistant and weak acid and alkali resistant; the aging life of the fire fighting hose can be over 8 years; and the fire fighting hose can be used in places requiring a large amount of water.

The invention discloses a sewage treatment system of an artificial wetland. The sewage treatment system comprises two sedimentation tanks which are arranged in parallel, wherein reversing valves are arranged in front and back of the two sedimentation tanks respectively; a dreg discharging hole is formed in the bottom of each sedimentation tank; a grating well, an aeration adjusting tank, a hydrolytic acidification tank, a contact oxidization tank and a wetland purification tank, an aeration wetland purification tank and a disinfection tank are arranged at the downstream of the sedimentation tanks through pipelines; the grating well is internally provided with a coarse grating and a fine grating in sequence from a water inlet to a water outlet; a pressure sensor and a negative-pressure suction nozzle are arranged at a water inlet side of the fine grating; the negative-pressure suction nozzle is connected onto a retractable rod; the negative-pressure suction nozzle is clung to the fine grating; the grating well is communicated to the aeration adjusting tank through a water inlet pipe; a filter screen is obliquely arranged in the aeration wetland purification tank; a plurality of grades of composite packing wetland regions are arranged above the filter screen; a free falling water height difference is formed between two adjacent grades of composite packing wetland regions. By optimizing a structure and a material, the purification efficiency of sewage is greatly improved and the sewage treatment system is not easy to block.

The invention discloses instantly melting cream. The formula of the instantly melting cream comprises the following components: volatile silicon oil (DC-345), low-viscosity silicone oil (DC-200, 5cst), stearoyl inulin (Rheopearl ISK2), polydimethylsiloxane and polydimethylsiloxane PEG-10 / 15 crosslinking polymer / compound (KSG-210), lauryl PEG-9-poly dimethyl silicon oxygen ethyl polydimethylsiloxane (KF-6038), purified water, butanediol, 1,3-propylene glycol (ZEMEA), sodium chloride, sodium citrate, micro-molecule hyaluronic acid sodium, 1,2-pentanediol (HYDROLITE5), trehalose (TREHALOSE100), water / sodium lactate / gluconic acid sodium salt compound (PURASAL MOISTXS), tocopheryl acetate (Vitamin EAcetate), bladderwrack extract (OLEPHYCOL FV), glycyrrhiza glabra extracting solution (Liquorice LC), bisabolol, phenoxyethanol, essence, and water / propylene glycol / methylisothiazolinone / methylparaben / propyl hydroxybenzoate / compound preservative (MICROCARE-MTP). The cream is a water-in-oil system, and the water-in-oil cream has high moisturizing property, high impermeability, and lasting moisture retention, also has the characteristics of the oil-in-water cream, is fresh and cool to apply, and can instantly generate water drops to provide the feeling of continuously supplying moisture for a user.

A quick water heater belongs to heating equipment and solves the problems of prior art, such as non-uniform heating of energy-converting sheets, formation of stagnant water zones in the water tank, and scale formation. The quick water heater comprises a shell inside which a water tank, a heating coil and a power frequency transformer are arranged, an eddy current heating device arranged inside the water tank, and a water inlet pipe and a water outlet pipe both arranged on the water tank. The heating coil is eclectically connected with the power frequency transformer. The invention is characterized in that the water tank, the eddy current heating device and the heating coil are ring-shaped; and the heating coil is positioned outside the water tank and opposite to the eddy current heating device. The inventive technical proposal ensures the uniform distribution of heat produced by the eddy current heating device and the uniform heating of water flowing through the heating device, thereby increasing the heat efficiency of the water heater. Additionally, the ring-shaped water tank can prevent the formation of stagnant water zones and water scale, so that the service performance of the water heater is improved and the service life of the water heater is prolonged.

The invention relates to a workstation system for a solar water heater. The workstation system is powerful in water outlet, low in mounting cost and energy saving. The system comprises a first water tube and a water pump which are communicated with a water tank of the solar water heater. The system is characterized in that a three-way valve is arranged between the water pump and the first water tube, a first connecting port of the three-way valve is connected with the first water tube, a second connecting port of the three-way valve is connected with one end of the water pump through a second water tube, the other end of the water pump is connected with a water supply valve through a third water tube, a fourth water tube is connected between the third water tube and a third connecting port of the three-way valve, and a hot water outlet tube is further communicated with the second water tube. According to the workstation system for the solar water heater, heated water can flow faster, wasted electric energy of electrical heating is little, and the mounting cost is low.

The invention provides a blended yarn of acrylic fiber, jute fiber and silkworm pupa protein fiber. The blended yarn is characterized by comprising the following components: 60-70 weight parts of acrylic fiber, 15-25 weight parts of jute fiber and 15-25 weight parts of silkworm pupa protein fiber. The blended yarn provided by the invention enables the characteristics of acrylic fiber, jute fiber and silkworm pupa protein fiber to be complementary and brings the advantages thereof into play.

The invention provides a turbine self-priming movable multifunctional flood fighting, irrigation and drainage pump truck set which integrates control, power, turbine vacuum drainage and an elevation draining pump and dispenses with water injection and drainage. The turbine self-priming movable multifunctional flood fighting, irrigation and drainage pump truck set comprises a power machine, a turbine vacuum machine, the elevation draining pump and an automatic control cabinet which are integrated and arranged on a same vehicle chassis. The turbine self-priming movable multifunctional flood fighting, irrigation and drainage pump truck set adopts a vacuum drainage device, and can be started without water injection; the turbine vacuum drainage device is high in displacement and can instantly discharge gas absorbed into a suction tube and introduce low-order water into the pump; the pump device has a vacuumizing halt function, is free from blockage, dispenses with heat preservation in winter, can be automatically controlled, is rapidly in water discharge, and has flexible moving capability and adaptability to various special environments, for example, a vehicle-mounted diesel generating set can further provide certain electrical energy to the outside for power or illumination, so that the pump truck set has more obvious advantages.

The invention discloses a novel method for preparing medicinal despun hydroxyl methionine calcium. Pure water and acid are added to feed grade liquid methionine to carry out warming and backflow, after cooling, calcium hydroxide is added to the mixture to regulate the pH value, an organic solvent is added to the mixture, a small amount of solid impurities are filtered, vacuum concentration is carried out after adding pure water into the filter liquor, purified water is added, calcium hydroxide is added to the mixture to regulate the pH value after warming, the organic solvent is added to the mixture dropwise after activated carbon decoloration, cooling and centrifugation are carried out after dropwise adding is completed, crude products of the despun hydroxyl methionine calcium are obtained, and the crude products of the despun hydroxyl methionine calcium are refined in a mixed solvent of pure water and the organic solvent to obtain the refined products of the despun hydroxyl methionine calcium. According to the technology, raw materials are easy to obtain, the technology is simple, used solvents can be recycled to use, the content and purity of obtained products are quite high, the crystalline form is quite good, stirring of high rotating speed is not needed, materials are easy to separate and dry, the phenomena of caking and hardening in material drying will not be generated, course products in a mother solution can also be recycled, and the novel method for preparing the medicinal despun hydroxyl methionine calcium is suitable for industrial mass production.

The embodiment of the invention provides a water purifier heating method. The heating method comprises the steps of heating the purified water in the water tank of a water purifier with a heating unitand then storing the heated purified water in a heat preservation liner; when the temperature of the water in the heat preservation liner is lower than a first preset water temperature, pumping the water in the heat preservation liner to the heating unit for cyclic heating till the temperature of the water inside the heat preservation liner reaches a second preset water temperature; and when a user chooses to take water, choosing to pump the water in the water tank to the heating unit for heating and making heated water flow out according to the water temperature chosen by the user, or controlling the water in the water tank to directly flow out, or pumping the preheated water in the heat preservation liner to the heating unit for heating and making heated water flow out. With the water purifier heating method, the purpose of quick outlet of hot water can be realized.

The invention discloses a method achieving constant temperature type cold and hot water mixing of an intelligent interconnected water dispenser. The method includes the steps of firstly, a water outflowing temperature is set according to the personalized demand of a user; secondly, a water outflowing design of a traditional water dispenser with cold and hot double water outlets is replaced by a water outflowing design of a water dispenser with a cold and hot integrated single water outlet, so that the water usage can be more safer; and finally, a wifi module is introduced in, data of real-timewater temperatures processed by a main control chip and data of expected time to reach the set temperature can be transmitted to a mobile phone, and the change of the water temperatures in real timecan be displayed on a mobile phone app matched and developed with the water dispenser.

The present invention relates to a hand-held washing machines, including a generator, a reducer, a pump body, a nozzle and a handle, wherein, a main drive shaft and at least one driven shaft is provided in the pump body, the main drive shaft is in transmission connection to the reducer, an active hydraulic gear is fixed on the main drive shaft, the gear is in mesh transmission with the driven hydraulic gear fixed on the driven shaft; an water inlet and outlet die cavity constituting the water stream channel is provided on the pump body, and the water inlet and outlet die cavity is penetrated to the cavity where the active hydraulic gear of the main drive shaft and the driven hydraulic gear of the driven shaft locate, so that a high voltage is formed by meshing and high-speed rotation of the active hydraulic gear and the driven hydraulic gear. Compared with the existing plunger pump structure, the invention has simple structure, fast inlet, wherein, the inlet time is shortened to more than 10 times; in addition, the pump body is provided with an adjustable pressure relief return valve and also added with the security protection performance of the machine.

A method for designing and implementing a system for subsurface drip irrigation dispersal of sodic water from a coal bed seam, the method comprising calculating a land surface area below which the sodic water dispersal system is to be placed, determining a concentration of total dissolved solids contained in the sodic water and in the aquifer ground water beneath the land surface area, developing a sodic water dispersal system configuration and dispersal sequence that limits the increase in the concentration of total dissolved solids in the aquifer ground water to no more than five hundred percent. Installing the sodic water dispersal system in the land area in accordance with the developed system configuration and pumping sodic water from the coal bed into the configured dispersal system in accordance with the developed dispersal sequence.

The invention particularly relates to a full-automatic water-saving buttocks-splash-proof squatting and sitting dual-purpose toilet WC pan which comprises a water tank, a urinal, a flushing pipeline and a blowdown pipeline. The rear of the water tank is directly communicated with a running water pipe, the urinal is a squat toilet urinal, the flushing pipeline comprises a flushing water ring, a flushing water pipe and a spraying water pipe, and the blowdown pipeline comprises an S-shaped blowdown pipe. The urinal is provided with a cushion, a casing is arranged around the urinal, two side portions of the casing serve as pedals, the front end of the cushion is supported on a front baffle of the urinal, the rear end of the cushion is hinged to the casing at the rear of the urinal through a rotating shaft, a bottom wall of the urinal is inclined from front to rear downwards, a blowdown opening is arranged at the rear end of the urinal to be communicated with the S-shaped blowdown pipe, the flushing water ring surrounds the urinal, flushing water holes are evenly formed in the upper portion of the flushing water ring, and the flushing water pipe and the spraying water pipe are led out of the water tank, the other end of the flushing water pipe is communicated with the flushing water ring, the other end of the spraying water pipe is respectively communicated with a first spraying port and a second spraying port, a check valve is arranged at the position of a blowdown outlet of the S-shaped blowdown pipe, and an infrared sensor control switch is installed between the flushing water pipe and the spraying water pipe. The full-automatic water-saving buttocks-splash-proof squatting and sitting dual-purpose toilet WC pan is wide in applied range, integrates squatting and sitting, conforms to the Chinese's use characteristics, performs flushing automatically, is excellent in performance, saves water, performs flushing cleanly and cannot blocked easily.

The invention relates to a constant temperature control device of an electric water heater. The constant temperature control device comprises a body, a water mixing assembly and a control valve assembly. A cold water casing pipe and a hot water casing pipe are connected in a butt joint manner to form a water mixing cavity. The hot water casing pipe is internally provided with a hot water channel,one end of the hot water channel communicates with a hot water inlet, and the other end of the hot water channel communicates with the water mixing cavity. The cold water casing pipe is internally provided with a cold water channel and a mixed water channel. One end of the cold water channel communicates with a cold water inlet, and the other end of the cold water channel communicates with the water mixing cavity. One end of the mixed water channel communicates with the water mixing cavity, and the other end of the mixed water channel communicates with a mixed water outlet. The control valve assembly comprises a fixing base and a valve element. One end of the valve element stretches into the water mixing cavity and is provided with a first blocking part and a second blocking part. The valve element can move in the axial direction of the body to adjust the flow of hot water flowing into the water mixing cavity from the hot water channel and the flow of cold water flowing into the watermixing cavity from the cold water channel. In this way, by means of the moving of the valve element, the flow of the hot water entering the water mixing cavity and the flow of the cold water enteringthe water mixing cavity can be precisely adjusted, and therefore rapid and stable constant-temperature water flowing out can be achieved, and using is convenient. The invention further provides the electric water heater.

The invention discloses a water-aid injection molding water needle, which comprises a die. The die is provided with a mounting hole, and a water needle is arranged in the mounting hole; the water needle comprises a water needle sleeve and a water needle core rod in the water needle sleeve; and a water inlet flow passage and a gas inlet flow passage are formed in the die, a water supply device is connected to the outside of the water inlet flow passage, and a gas supply device is connected to the outside of the gas inlet flow passage. The water-aid injection molding water needle is characterized in that a clearance is formed between the water needle sleeve and the water needle core rod and communicated with the gas inlet flow passage and a die cavity of the die, the middle part of the water needle sleeve is provided with a trough which is communicated with the water inlet flow passage, the tail part of the water needle sleeve is provided with a water inlet distributor, one end of the water inlet distributor is communicated with the trough, and the other end of the water inlet distributor is communicated with the die cavity of the die. The water needle system integrates water inlet, gas inlet and drainage; and the water needle has the advantages of simple structure, convenient manufacturing and machining operations, small volume and stable performance, can be applied to various dies, and can prevent water medium and plastic melt from overflowing, effectively drain water in a water passage and achieve the purpose of reasonably reclaiming water resources.

The invention discloses a hydraulic oil cooling device of coal mining machine. The hydraulic oil cooling device comprises six cooling plates which are arranged around (up and dowm, right and left, and front and back) and are welded together, wherein the cooling plate comprises a bottom plate, a joint seat, an end plate, a strip plate and a pressing plate, wherein the end plate, the strip plate and the pressing plate are respectively welded on the bottom plate; the pressing plate is connected with the strip plate at a corner of the strip plate; the end plate is connected with two ends of the strip plate; and the joint seat is welded at a corresponding position opposite to the end plate. Compared with the prior part, the cooling device provided by the invention is embedded in various cooling plates of an oil tank by a serpentine waterway; water in the waterway flows fast; and area of the oil contacting cooled water is increased so as to achieve the purpose of fully cooling at high efficiency; furthermore, various plates are connected with each other through the joint seat on the end plate to form a cooled water circulating loop with water source of a cold water pump station, so that entire oil tank composes the hydraulic oil cooling device by self, thereby removing a traditional cooler, stabilizing systems and saving space.