33results about How to "Guaranteed water consumption" patented technology

The invention relates to the technical field of glass curtain wall cleaning equipment, in particular to a high-altitude glass cleaning device. Through rotation of a fan propeller installed on a high-speed motor which is arranged in an air outlet in the middle of a cleaning car, air at the bottom of the cleaning car is discharged at high speed, instantaneous vacuum is generated at the bottom of the cleaning car, and negative pressure difference is formed between the bottom of the cleaning car and the outside atmosphere, so that the cleaning car is attached to glass, and frictional force is formed between wheels and the glass; a driving motor of the cleaning car is provided with the wheels through a driving shaft, so that the driving motor is controlled to make the cleaning car move on a wall; a steering engine of the cleaning car is connected with the wheels through a steering shaft, so that the steering engine is controlled to make the direction of the cleaning car changed; brushes on a brush roller can be wetted out by water sprayed by an atomizing nozzle, the brush roller at the bottom of the cleaning car is driven by a brush roller motor to rotate, and the glass cleaning operation of the brushes is completed; a coiling roller drags the cleaning car through a lifting rope so as to control ascending and descending of the cleaning car, and the situation that the cleaning car falls off from a tall building due to abnormal conditions is further avoided.

The invention relates to a method of continuous concentrated acid hydrolysis of organochlorosilane. The method comprises the following steps: step 1, the organochlorosilane is subject to hydrolysis reaction with a concentrated acid in a hydrolysis reactor to produce a hydrochloric acid with higher concentration, and a crude hydrolysate; step 2, after the liquid produced after hydrolysis reaction is separated through a preliminary separator, the concentrated acid enters a falling-film evaporator to generate HCL (hydrogen chloride) gas for production of methyl chloride through heat exchange; the concentrated acid at the tower bottom enters the hydrolysis reactor for cyclic use; the oil phase separated by the preliminary separator enters a primary phase separator and a secondary phase separator, the separated acid liquor returns to the hydrolysis reactor for cyclic use, and the oil phase enters the subsequent water washing procedure; and step 3, the two-stage series water-washing and the phase separation are carried out to the oil phase in the water washing procedure, then the recycle washing with a dilute alkali lye and the phase separation are carried out, and finally, the latest two-stage series water-washing and the phase separation are carried out; and the washed oil phase is a siloxane oligomer.

The invention provides a polyacrylonitrile as-formed fiber rinsing bath. The rinsing bath is characterized in that a shell (13) of the rinsing bath is a U-shaped bath; a circulating pump (10) and a heat exchanger (11) are connected with the bottom of the shell (13); an outfall (8) and a water inlet (9) are arranged at the bottom of the shell (13); a temperature measurement hole (5) is arranged on the side of the shell (13); drawing rollers are installed on the shell (13) and comprise silk entering drawing rollers (1), intermediate drawing rollers (2) and silk exiting drawing rollers (3), which are in the same size; a water outlet (6) is arranged on the shell (13) and is on the same level with a rinsing bath liquid level (12); and the water outlet and the water inlet (9) are arranged at the two ends of the shell (13). The rinsing bath has the advantages of uniform water temperature distribution, simultaneous suitability for big and small tows, high rinsing efficiency and good effect.

The invention relates to a vertical greening device and an automatic water circulation system thereof. The automatic water circulation system comprises a water tank arranged at the bottom of the vertical greening device, a water pump arranged inside the water tank and a circulating type water supply pipeline arranged above the water tank, the water supply pipeline comprises a vertically-arranged water supply section and an irrigation section, the irrigation section is arranged inside the vertical greening device, is distributed in an S shape from top to bottom, and is provided with water dripping holes for dripping water to the vertical greening device; the automatic water circulation system comprises a controller and humility sensors, the controller controls the operating state of the water pump according to the information detected by the humidity sensors so as to water the plants timely according to the humidity information and to avoid over-watering, so that water sources are fully saved under the condition that water requirements of the growth of the plants are guaranteed, water and soil loss can be prevented, and the healthy survival of the plants in a life cycle can be guaranteed.

The invention discloses a multi-layer bath care bed which comprises a bed frame and a plate bed body. The bed frame is composed of a supporting column, a plate bed frame, a bandage type bounding bed and a sewage collecting device. The bandage type bounding bed is arranged above the plate bed body. The sewage collecting device is arranged below the plate bed body. The supporting column is provided with a lifting hanging device. The four top ends of the bandage type bouncing bed are connected with the lifting hanging device and are vertically lifted and moved. The plate bed body comprises at least three movable plates. Installation frames are arranged around the movable plates which are detachably installed in the installation frames. The multi-layer bath care bed is reasonable in structure, easy to operate, breathable, and capable of solving the problem of urine and excrement and bath of long-term bedridden patients, and allowing the patients to be cared conveniently.

A lake landscape purifying device comprises a plant landscape purification system arranged in a lake and a biochemical purification system arranged on the plant landscape purification system, wherein a floating ball and a hauling cable are arranged on the plant landscape purification system, one end of the hauling cable is connected with the plant landscape purification system, and a heavy anchor is arranged at the other end of the hauling cable. The device overcomes poor water transparency, large depth and water ecology losing of polluted water, improves the ecological environment of a lake water system, improves the quality of lake water, recovers the ecological environment of lake water, and solves the problems of great operation space limitation, low space utilization rate, high cost and poor purification effect of a single water ecology construction mode.

The invention relates to a method for producing hydrolysates by hydrolyzing methyl chlorosilane in concentrated acid. In the method, methyl chlorosilane and hydrolysates are mixed in an oil-containing acidic water solution separated out through a primary phase separator and a secondary phase separator, are treated by a preheater, and are then moved into a concentrated acid hydrolysis reaction system for cyclic reaction operation; hydrogen chloride generated in the hydrolysis reaction is released from the top of a tower, and is treated by a condenser and a demister to obtain qualified hydrogen chloride gas for chloromethane production; and methyl chlorosilane hydrolysates are treated by four phase separators and one vapor tower to obtain qualified hydrolysates for pyrolysis.

The invention relates to an outdoor mobile intelligent pump house used for emergency water supply. The pump house includes a full frequency conversion water supply equipment system, an intelligent electric control system, a security monitoring system, a water quality safety assurance system, a pump house environment system, a pipe network abnormity protection system, a GIS system, a water supply intelligent cloud management system, a human factor engineering management system, and an operation and maintenance assurance system. The outdoor mobile intelligent pump house used for emergency watersupply needs one main inlet pipe connected with one end of the temporary pipe network and one main outlet pipe connected with the other end of the temporary pipe network. The invention provides an outdoor mobile intelligent pump house which can be used for emergency water supply, The pump house has the advantages of simple structure and convenient use, and can realize the intelligent and safe water supply management of the emergency water supply in the reconstruction of the old residential area or the temporary pipe network emergency water supply in the case of natural disasters, ensure the water consumption and pressure requirements of users, avoid the secondary pollution risk, have flexible transportation, convenient installation and stable operation.

The invention discloses a control method of a water purifying machine. The control method of the water purifying machine comprises a control method for automatically preparing pure water by the water purifying machine, and a control method for continuously preparing and supplying the pure water, and meanwhile, also comprises an automatic recycling control method and an automatic discharging control method of concentrated water generated in a process of preparing the pure water by the control method of the water purifying machine. The invention also discloses a control system for the control method of the water purifying machine; the control system comprises a water preparing device used for preparing the pure water and a controller used for controlling preparation of the pure water and the concentrated water; the invention also discloses the water purifying machine based on the control system. The control method of the water purifying machine, which is provided by the invention, can realize effects of saving water and saving energy, achieves purposes of improving and prolonging the service efficiency and the service life of a reverse osmosis membrane, has beneficial effects that purified water is produced during use of ordinary water, and is stored in a water storage pressure tank for pressure accumulation, so as to be used in case of need; a filter membrane can be flushed, so that the service efficiency and the service life of the water purifying machine are improved and prolonged; when the stored purified water is used, no extra concentrated water is generated, and no waste water is discharged; the protection is started in case of water deficiency, so as to prevent the water purifying machine from being damaged.

The invention discloses a device for mixing, reclaiming and recycling steel waste water and municipal sewage. The device for mixing, reclaiming and recycling the steel waste water and the municipal sewage comprises a steel waste water pretreatment tank and a municipal sewage pretreatment tank; liquid filling openings are formed in the tops of the steel waste water pretreatment tank and the municipal sewage pretreatment tank; filter screens are arranged in the steel waste water pretreatment tank and the municipal sewage pretreatment tank; stirring rolls are arranged on one sides of the filter screens; the steel waste water pretreatment tank and the municipal sewage pretreatment tank are both connected with a mixed reaction tank through pipelines; a rotating rod is arranged in the mixed reaction tank; a stirring paddle is arranged on the rotating rod; a medicine filling opening is formed in the top of the mixed reaction tank; the mixed reaction tank is communicated with a sedimentation tank through a pipeline; the sedimentation tank is communicated with a filter tank through a pipeline; an active carbon layer is arranged in the filter tank; and a permeable membrane is arranged at the bottom of the active carbon layer. The water usage for steel production is guaranteed; meanwhile, large amounts of fresh water resources are saved in the steel production; therefore, the device for mixing, reclaiming and recycling the steel waste water and the municipal sewage, disclosed by the invention, is more energy-saving and environment-friendly.

The invention relates to the field of sewage processing, and relates to a backwashing apparatus and a backwashing method for an aeration biofilter with a lightweight filter material. The backwashing apparatus for the aeration biofilter with the lightweight filter material comprises a tank, a lightweight filter material layer, a technical water inlet valve, a technical water outlet valve, and a backwashing water discharging valve. An aeration pipeline and a local backwashing pipeline are connected to the bottom of the tank. The aeration pipeline comprises an aeration device. The local backwashing pipeline comprises a local backwashing pump and a local backwashing perforated pipe connected to the local backwashing pump. A local backwashing starting valve is arranged on the local backwashingperforated pipe. The local backwashing perforated pipe is positioned in the lightweight filter material layer. The invention also provides a backwashing method for the aeration biofilter with the lightweight filter material. The apparatus and the method provided by the invention are advantaged in that: lightweight filter material mixing caused by the backwashing process is reduced, water consumption in the backwashing process is reduced, and agglomerated lightweight filter material can be flushed.

The invention relates to a vertical greening device and an automatic water circulation system thereof. The automatic water circulation system comprises a water tank arranged at the bottom of the vertical greening device, a water pump arranged inside the water tank and a circulating type water supply pipeline arranged above the water tank, the water supply pipeline comprises a vertically-arranged water supply section and an irrigation section, the irrigation section is arranged inside the vertical greening device, is distributed in an S shape from top to bottom, and is provided with water dripping holes for dripping water to the vertical greening device; the automatic water circulation system comprises a controller and humility sensors, the controller controls the operating state of the water pump according to the information detected by the humidity sensors so as to water the plants timely according to the humidity information and to avoid over-watering, so that water sources are fully saved under the condition that water requirements of the growth of the plants are guaranteed, water and soil loss can be prevented, and the healthy survival of the plants in a life cycle can be guaranteed.

The invention relates to a method for hydrolyzing methyl chlorosilane with concentrated acids to obtain hydrolysate, wherein, the methyl chlorosilane and the acidic oil-contained aqueous solution separated from the primary phase separator and the secondary phase separator from the hydrolysate are mixed, pass through a preheater, enter a concentrated-acid hydrolysis reaction system and carry out circular reaction operation; the hydrogen chloride generated in the hydrolysis reaction is released from the top of a tower, goes through a defroster and a condensator and then becomes qualified HCI gas to be used in the production of methyl chloride. Qualified hydrolysate used for decomposition process is obtained after the hydrolysate of methyl chlorosilane goes through four phase separators and a steam tower.

The invention discloses a water purification system. The water purification system comprises a water supply source, a first filter, a second filter, a three-way pipe, a current-limiting proportional valve, a first check valve, a purified water tap and a domestic water tap; the water inlet end of the first filter is communicated with the water supply source through a first water inlet waterway; thewater outlet end of the first filter is provided with a first purified water outlet and a first wastewater outlet; the water inlet end of the second filter is communicated with the first purified water outlet through a second water inlet waterway; the water outlet end of the second filter is provided with a second purified water outlet and a second wastewater outlet; the purified water tap is communicated with the second purified water outlet through a purified water outlet waterway; the first wastewater outlet, the domestic water tap and the second wastewater outlet are respectively communicated among three pipe orifices of the three-way pipe; the current-limiting proportional valve and the first check valve are communicated between the first wastewater outlet and the three-way pipe. According to the technical scheme of the invention, the discharge amount of wastewater is reduced, and the service life of the first filter and the second filter is prolonged.

The invention provides a pull-type solid-liquid separation system of a shield tunneling machine and a separation method, the pull-type solid-liquid separation system of the shield tunneling machine comprises a bogie frame arranged behind a shield tunneling system, and the bogie frame is provided with a solid-liquid separation system; the structure of the solid-liquid separation system is as follows: the undersize of a pre-screen is connected with an inlet of a cyclone, a heavy phase outlet of the cyclone is connected with a dewatering screen, and the undersize of the dewatering screen is connected with a slurry storage tank; the slurry storage tank is connected with an inlet of the cyclone; an supernatant outlet of the cyclone is connected with an overflow box, an overflow port of the overflow box is connected with a net slurry tank, and the net slurry tank is provided with a second sewage pump so as to return net slurry to a shield system; oversize products of the pre-screen and the dewatering screen are conveyed to a slag hopper car. According to the separation method, an on-line viscosity sensor is arranged on a pipeline near a sludge discharge pump for switching of the pull-type solid-liquid separation system and a ground muddy water treatment system. The slurry solid-liquid separation treatment can be carried out at any time along with tunneling of the shield system, and the gravel discharge conveying amount is reduced.

The invention relates to the field of greening of Gobi deserts and deserts and provides tree planting based on a storage approach in droughty Gobi deserts, deserts and regions covered with snow throughout the year. With the scientific theory of the storage approach as the innovation guidance, three technologies are formed. According to the first technology, the storage approach is adopted for planting trees in places covered with 40 kg / square meter snow throughout the year, consideration of water sources can be omitted during tree planting every year, snow graders are used for pushing the accumulated snow to plant pits, and after the snow smelts into water, infiltrating irrigation can be carried out. According to the second technology, the storage approach is used for planting trees in droughty Gobi deserts and other barren places, and watering is required once a year. According to the third technology, the storage approach is used for afforestation in desert zones, and water infusionis required once a year. The common point of the three technologies lies in that the water content and evaporation amount of soil in storage tanks are controlled by the storage approach, the water usage can be reduced to 90% or above, the survival rate can reach 98% at least, snow removal, watering and water pouring only need to be performed once a year, and the consideration of the water sourcesand manual watering in the regions covered with snow throughout the year is omitted. The storage approach creates a historical beginning for water-saving afforestation.

The invention discloses a full premixed gas wall-hanging stove which comprises a tap water inlet pipeline, a water inlet temperature sensor, a domestic water cold water inlet joint assembly, a boosterpump, a controller, a water outlet temperature sensor, a water flow sensor, a plate heat exchanger, a domestic water hot water outlet joint assembly, a domestic water valve, a one-way valve, a full premixed combustion condensation type heat exchanger, a hot medium water drainage pipe, an electric control three-way valve, a heating cooling fin assembly, a hot medium water circulating pump and a hot medium water backflow pipe, wherein a domestic water circulating loop is formed by the tap water inlet pipeline, the domestic water cold water inlet joint assembly, the booster pump, the water flowsensor, the plate heat exchanger, the domestic water hot water outlet joint assembly and the one-way valve. Due to the fact that domestic water in the domestic water circulating loop is hot water allthe time, when domestic hot water is used, the domestic water valve is opened, hot water can be output instantly, and the daily water quantity can be guaranteed under the action of the booster pump.

The invention discloses a double-cylinder flat-shaft horizontal type lotus root digging machine which comprises a machine body. The double-cylinder flat-shaft horizontal type lotus root digging machine is characterized in that a double-cylinder flat-shaft diesel engine is arranged on the machine body, wherein the double-cylinder flat-shaft diesel engine is communicated with a sewage pump by a commutator, and a filter device is arranged between the commutator and the sewage pump; the sewage pump is communicated with a water pumping port and a water draining port; the water pumping port of the sewage pump is formed in the front part of the machine body; the water draining port is formed in the rear part of the machine body; the water draining port is formed in the lower end surface of the machine body and is inclined towards the rear side; a flow divider is arranged between the sewage pump and the water draining port; an arm-rest frame is arranged on the rear part at the upper end of the machine body. The double-cylinder flat-shaft horizontal type lotus root digging machine can be used for enabling the dug lotus root field to be loose, flat and soft, increasing the oxygen content in the lotus root field, and uniformly stirring clay fertilizer in the field, and is beneficial to planting and producing. Moreover, the power is improved, the fuel oil quantity of the diesel engine is lowered, and the mechanical efficiency of a water pump is improved.

The invention discloses a multi-functional ink fountain device for intaglio printing. The multi-functional ink fountain device comprises a bracket. A plate roller is arranged on the bracket; a functional groove which wraps the peripheral side of the lower part of the plate roller is formed in the bracket; an ink collection groove and an ink conveying groove are formed in the groove bottom of the functional groove; the ink collection groove and the ink conveying groove are connected with an ink return pipe; the ink return pipe is connected with an ink feeding mechanism on the outer side of the bracket; a temperature control mechanism is arranged on the ink feeding mechanism; an ink conveying roller is arranged in the ink conveying groove; an ink conveying table connected with the ink feeding mechanism is further arranged at the side part of the ink conveying roller; a roller brush positioned below the side part of the plate roller is arranged on the bracket; a transversely arranged injection pipe is further correspondingly arranged on the roller brush; an ink cleaning roller is arranged above the roller brush; and an ink cleaning scraper is arranged at the position above the side part of the plate roller. According to the multi-functional ink fountain device, chromatic aberration can be avoided, the ink feeding amount is decreased, the phenomenon of ink splashing is effectively avoided, and water consumption during plate washing is low.

The invention belongs to the technical field of calcination to prepare gypsum, and particularly discloses a desulfurized gypsum calcination process using natural gas as a heat source. The calcination process is based on a desulfurized gypsum calcining device using natural gas as a heat source. By controlling the process conditions of drying and calcining in the calcining device, the properties of raw materials and intermediate products, the quality of the final product of desulfurized gypsum is finally guaranteed. The standard viscosity is controlled to be less than 0.6 and the crystal water content is 5.5% to 5.9%. The quality of the gypsum powder affects whether the internal demand for water in the application of the finished gypsum mortar is within a reasonable range to prevent it from being caused by excessive quality control. Plastic cracking, low strength and other abnormalities, provide a full guarantee for product performance.

A PLC-and-MCGS-based heat pump system monitoring method and an air source heat pump hot-water system thereof, and relates to a fluid heater using a heat pump and a control method of the fluid heater. The air source heat pump hot-water system comprises heat pump units, a water tank, a water supplement pump, a circulating pump, a hot water booster pump, a power distribution cabinet, an MCGS configuration computer and a PLC module. The PLC module is connected to a remote water meter, a liquid level sensor and a temperature sensor, the PLC module and the MCGS configuration computer are connected with each other and control the water level and the water temperature of the water tank of the heat pump hot-water system in a combined mode, and the MCGS configuration computer is connected to an electric energy meter and obtains time-segmented electric-energy consumption data of the heat pump hot-water system. By means of a monitoring interface of the MCGS configuration computer, equipment states of the heat pump units are monitored in real time, alarming and maintenance prompting signals are displayed, and equipment operation and alarming states of the heat pump units are recorded. The statistical functions of power consumption and water consumption is achieved, centralized control and energy consumption management of the air source heat pump hot-water system achieved, and the energy-saving advantage of air source heat pumps is fully shown.

The invention relates to a method of continuous concentrated acid hydrolysis of organochlorosilane. The method comprises the following steps: step 1, the organochlorosilane is subject to hydrolysis reaction with a concentrated acid in a hydrolysis reactor to produce a hydrochloric acid with higher concentration, and a crude hydrolysate; step 2, after the liquid produced after hydrolysis reaction is separated through a preliminary separator, the concentrated acid enters a falling-film evaporator to generate HCL (hydrogen chloride) gas for production of methyl chloride through heat exchange; the concentrated acid at the tower bottom enters the hydrolysis reactor for cyclic use; the oil phase separated by the preliminary separator enters a primary phase separator and a secondary phase separator, the separated acid liquor returns to the hydrolysis reactor for cyclic use, and the oil phase enters the subsequent water washing procedure; and step 3, the two-stage series water-washing and the phase separation are carried out to the oil phase in the water washing procedure, then the recycle washing with a dilute alkali lye and the phase separation are carried out, and finally, the latest two-stage series water-washing and the phase separation are carried out; and the washed oil phase is a siloxane oligomer.

The invention provides a polyacrylonitrile as-formed fiber rinsing bath. The rinsing bath is characterized in that a shell (13) of the rinsing bath is a U-shaped bath; a circulating pump (10) and a heat exchanger (11) are connected with the bottom of the shell (13); an outfall (8) and a water inlet (9) are arranged at the bottom of the shell (13); a temperature measurement hole (5) is arranged on the side of the shell (13); drawing rollers are installed on the shell (13) and comprise silk entering drawing rollers (1), intermediate drawing rollers (2) and silk exiting drawing rollers (3), which are in the same size; a water outlet (6) is arranged on the shell (13) and is on the same level with a rinsing bath liquid level (12); and the water outlet and the water inlet (9) are arranged at the two ends of the shell (13). The rinsing bath has the advantages of uniform water temperature distribution, simultaneous suitability for big and small tows, high rinsing efficiency and good effect.

The invention discloses a centrifugal pump water supply device. The centrifugal pump water supply device comprises an impeller shell, a water inlet pipe is arranged at the middle position of the impeller shell, a three-way valve is arranged above the impeller shell, the output end of the three-way valve is connected with a reflux pipe and a drainage pipe, the reflux pipe communicates with the water inlet pipe, a one-way valve is arranged in the water inlet pipe, the one-way valve is located at the front end of the reflux pipe, and a water supply barrel is arranged on one side of the impeller shell. The centrifugal pump water supply device is provided with the water supply barrel communicating with an impeller cavity, the water quantity in the water supply barrel is higher than the size ofthe impeller cavity to ensure the normal start of an impeller, when the impeller in the impeller cavity rotates, water can be dumped into the water supply barrel, and the next water supply can be guaranteed by using a float plate to storage water; and a contact switch is arranged in the water supply barrel, the drainage pipe is opened when water in the water supply barrel is greater than the amount to be supply next time, the function of automatic drainage is realized, and the sufficient water supply next time can further be ensured.

The invention discloses a hospital central pure water centralized dual water supply system, which belongs to the technical field of water treatment and comprises a first water production system, a second water production system, a third water production system and a water supply system. According to the hospital central pure water centralized dual water supply system provided by the invention, each water quality is provided with a corresponding water storage tank, the water storage tanks do not interfere with each other and operate independently, the water consumption of each water quality can be ensured, the impermeable membrane is vertically mounted, and the mounting cost is saved. The whole system has the characteristics of low investment cost, low operation cost, convenience in use and simple structure.

The invention discloses low-shrinkage anti-cracking concrete, and belongs to the technical field of building materials, the low-shrinkage anti-cracking concrete is characterized in that the concrete comprises, by weight, 580-610 parts of a cementing material, 780-880 parts of machine-made sand, 900-940 parts of gravel, 25-35 parts of an additive and 130-160 parts of water, the cementing material comprises cement, fly ash, mineral powder and slag, and according to the weight ratio, the cementing material comprises the cement, the fly ash, the mineral powder and the slag. The ratio of the cement to the fly ash to the mineral powder to the slag is 5: (1.6-2.1): (1.2-1.7): (0.9-1.3), so that the effect of reducing the shrinkage rate of the concrete is achieved.

The invention discloses an outdoor intelligent fire hydrant installation monitoring device. The outdoor intelligent fire hydrant installation monitoring device comprises a bottom plate, wherein a support is fixedly installed in the middle of the top of the bottom plate, and water pumping machines are fixedly installed on the two sides of the top of the bottom plate. According to the outdoor intelligent fire hydrant installation monitoring device, a static indicating block, a shell, a sliding way, a movable indicating block and a floating ball are used in cooperation, if water in a three-way pipe is insufficient, the floating ball does not have enough buoyancy, the distance between one end of the movable indicating block and one end of the static indicating block exists, which shows that some position of fire fighting water is in a water leakage state; and a transparent plate is arranged outside a vertical cylinder, the contact state between the static indicating block and the movable indicating block can be directly observed, the water leakage state of a current fire hydrant can be checked from the situation that a box door of indoor fire fighting water cannot be opened, the water leakage state of the fire hydrant can be conveniently observed, the abnormal state of the fire hydrant can be sent in the first time, and waste of water resources can be reduced.

The invention discloses a control method of a water purifying machine. The control method of the water purifying machine comprises a control method for automatically preparing pure water by the water purifying machine, and a control method for continuously preparing and supplying the pure water, and meanwhile, also comprises an automatic recycling control method and an automatic discharging control method of concentrated water generated in a process of preparing the pure water by the control method of the water purifying machine. The invention also discloses a control system for the control method of the water purifying machine; the control system comprises a water preparing device used for preparing the pure water and a controller used for controlling preparation of the pure water and the concentrated water; the invention also discloses the water purifying machine based on the control system. The control method of the water purifying machine, which is provided by the invention, can realize effects of saving water and saving energy, achieves purposes of improving and prolonging the service efficiency and the service life of a reverse osmosis membrane, has beneficial effects that purified water is produced during use of ordinary water, and is stored in a water storage pressure tank for pressure accumulation, so as to be used in case of need; a filter membrane can be flushed, so that the service efficiency and the service life of the water purifying machine are improved and prolonged; when the stored purified water is used, no extra concentrated water is generated, and no waste water is discharged; the protection is started in case of water deficiency, so as to prevent the water purifying machine from being damaged.

The invention discloses a multi-layer bath care bed which comprises a bed frame and a plate bed body. The bed frame is composed of a supporting column, a plate bed frame, a bandage type bounding bed and a sewage collecting device. The bandage type bounding bed is arranged above the plate bed body. The sewage collecting device is arranged below the plate bed body. The supporting column is provided with a lifting hanging device. The four top ends of the bandage type bouncing bed are connected with the lifting hanging device and are vertically lifted and moved. The plate bed body comprises at least three movable plates. Installation frames are arranged around the movable plates which are detachably installed in the installation frames. The multi-layer bath care bed is reasonable in structure, easy to operate, breathable, and capable of solving the problem of urine and excrement and bath of long-term bedridden patients, and allowing the patients to be cared conveniently.