72results about How to "Reduce water supply" patented technology

The invention provides a wafer transfer method and a grinding device. Even in a state where the surface tension is strong and the amount of water supplied to hold the wafer on the holding table via the water layer is reduced, the wafer can be peeled from the water layer to be transported. The sucker (171) of the transfer unit (17) is held on the suction position of the wafer (W) on the holding table (163) through the water layer (162), and is set as the sucker center (φ2) so as to be aligned with the wafer (W). ) of the center (φ1) of the wafer does not coincide with the state of being sucked by the chuck (171), and the transfer arm (172) is raised in the vertical direction to transfer, thereby, it is different from the position sucked at the center of the wafer. Compared with the situation, the adsorption and detachment of the wafer (W) from the water layer (162) becomes extremely easy.

The invention relates to an automatic micro-moistening and irrigating system capable of totally controlling water, fertilizer, air and temperature. Water, fertilizer, air and temperature of soil are four main environmental condition factors for restraining the growth and the development of crops, wherein the change of any one single factor can cause great influence on the growth and the development of the crops, and after the change reaches a certain critical value, crops can be caused to grow slowly, stop growing and even die. The automatic micro-moistening and irrigating system comprises a water supply tank (1), wherein the water supply tank is connected with a water pipe (2), the water pipe is provided with a valve (3), a heater (4) and a fertilizer feeding pot (5) in sequence; the water pipe is connected with a group of micro-moistening pipes (6); and a computer is connected with a water, fertilizer, air and temperature control system through a sensor. The automatic micro-moistening and irrigating system is used for production of facility agriculture and precision agriculture.

A conveyor dishwasher (1) has at least one wash zone (6, 7, 8, 9) and at least one final- rinse zone (10), also a control arrangement (36) and a wash-ware detector (34) which can sense the type of wash ware which is to be treated. The control arrangement (36) assigns each type of wash ware sensed to a defined wash-ware group, selects automatically, for each wash-ware group, a defined treatment programme by which the type of wash ware assigned to the wash- ware group is to be treated in at least one of the treatment zones (6, 7, 8, 9, 10, 26) of the conveyor dishwasher (1), and sets the process parameters associated with the treatment programme selected.

The present invention relates to a true and false motion lawn and a manufacturing method therefor. The true and false motion lawn comprises an unmodified rhizosphere layer. The upper portion of the unmodified rhizosphere layer is a modified rhizosphere layer, wherein the thickness of the modified rhizosphere layer is 8-12 cm; a false grass reticular layer is embedded onto the modified rhizosphere layer, wherein the thickness of the false grass reticular layer is 3-7 cm, and the thickness of the unmodified rhizosphere layer is 15-25 cm. The manufacturing method comprises: spreading seeds on the surface layer of the modified rhizosphere layer; planting true grass; and uniformly distributing false grass on the false grass reticular layer. The true and false motion lawn combines the advantages and avoids disadvantages of the two, brings motion back to nature, and meanwhile is more durable, safer and costs less money and effort.

The present invention relates to magnetic separating technology, and is especially one kind of wet magnetic separator. The wet magnetic separator includes a rotating drum with a magnetic system, a tank below the rotating drum, a stirrer inside the tank and comprising rotating shaft and blades on the shaft, a mechanical driving unit and a power mechanism connected through the mechanical driving unit to the shaft. The wet magnetic separator is used in separating magnetic material compounded in water, and has the advantages of high separating efficiency, high separating precision, low water consumption, etc.

The invention discloses a bearing. The bearing comprises a bearing pedestal, a bearing cap, a tilting fillet, a supporting bush, a forward thrust pad, a forward thrust disc, a first oil cavity, a second oil cavity, a cooler and an oil-containing cover. The tilting fillet is fixed to the bearing pedestal. The supporting bush is fixed to the inner diameter side of the tilting fillet. The forward thrust pad is fixed to the front side of the tilting fillet. The first oil cavity is a sealing cavity formed by covering the bearing cap and the bearing pedestal. The second oil cavity comprises a hot oil inlet and a cold oil outlet. The second oil cavity communicates with the first oil cavity through the hot oil inlet. The cooler is arranged in the second oil cavity. The oil-containing cover is arranged at the outer diameter side of the forward thrust disc. The oil-containing cover and the forward thrust disc form an oil-containing cavity. An oiling groove is formed in the inner diameter side of the supporting bush. An oil throw-off cavity is formed in the inner diameter side of the forward thrust pad. The oil-containing cavity comprises a high pressure oil outlet and an oil pumping opening. The oil pumping opening communicates with the cold oil outlet of the second oil cavity. The high pressure oil outlet is divided into two oil ducts which communicate with the oiling groove and the oil throw-off cavity correspondingly. The bearing has high heat exchange efficiency, and bearing pad burning can be effectively avoided.

The invention provides a system and method for adjusting the flexibility of a coal-fired unit using water supplementing tanks. When the load of the system is increased, the opening degree of a first water feed pump is reduced, the water feeding amount is reduced, required steam extraction of a steam turbine is less, and the work of the steam turbine is increased; meanwhile, the liquid level of a condenser rises, and the cold water supplementing tank can store condensed water to prevent the liquid level of the condenser from being too high; and the water feeding amount is reduced, so that the liquid level of a deaerator is reduced, and at the time, the hot water supplementing tank supplements water to the deaerator under driving of a second water feed pump. When the load of the system is decreased, a part of exhausted steam of a high-pressure cylinder enters a jet type heat pump, the amount of steam entering a low-pressure cylinder is reduced, the work of the steam turbine is reduced, the jet type heat pump uses the exhausted steam of the steam turbine to heat low-temperature water in the cold water supplementing tank, and the mixed high-temperature water is injected into the hot water supplementing tank. According to the system, an external water supplementing tank adjusting system is added on the system of an original heat recovery system, the unit heat storage capacity is increased while the load of the unit is quickly increased or decreased, the equipment structure is simple, and the flexibility and economical efficiency of the unit are improved.

The invention provides a thermal power generation unit main steam temperature control method. The thermal power generation unit main steam temperature control method comprises the following steps of 1, establishing a dynamic performance relation according to the dynamic performance of a boiler; arranging a state observer in the boiler and conducting computing on a smoke baffle instruction and themain steam flow as inputs of the state observer through an algorithm in the state observer to obtain a state feedback value, transmitting the state feedback value to a control device and transmittingan opening and closing instruction to a baffle through the control device; 2, establishing a static performance relation according to the static performance of the boiler, wherein the relation is shown as the formula: G(h<s>-h<w>)=BQ<eta>; and 3, establishing a steam temperature control loop according to the dynamic performance in the step 1 and the static performance relation in the step 2, wherein the steam temperature control loop comprises coal quantity control, feedwater quantity control and attemperation water flow control. Thus, the thermal power generation unit main steam temperature control method has the advantage that the main steam temperature control effect is improved.

The invention provides a flue gas purification and waste heat recovery system which comprises a cyclone; a housing of the cyclone comprises an upper cylindrical barrel body and a lower cone; a partition plate is arranged in the housing and divides the housing into a dust collection chamber and a gas purification chamber; an overflow port of the cyclone is located above the gas purification chamber; an impurity discharge port of the cyclone is located below the dust collection chamber; a ceramic filtering membrane tube is arranged on the partition plate and stretches towards the dust collection chamber; a preheating exchanger is arranged in a gas inlet of the cyclone; a main heat exchanger is arranged in the ceramic filtering membrane tube; and a water inlet pipe, the preheating exchanger, a connecting pipe, the main heat exchanger and a water outlet pipe are sequentially connected. When high-temperature flue gas enters the flue gas purification and waste heat recovery system, the high-temperature flue gas exchanges heat with the preheating exchanger, and water in the preheating exchanger is pre-heated and then enters the main heat exchanger, by this time, a temperature difference between the temperature of the flue gas and the temperature in the main heat exchanger is reduced, and the temperature difference between the interior and the exterior of the ceramic filtering membrane tube is reduced, thus the ceramic filtering membrane tube is effectively prevented from being damaged by thermal shock.

The invention relates to a coke oven raw gas heat continuous recovery system. The system comprises a high-temperature dust remover, a waste heat boiler, a low-temperature heat exchanger, a deaerator,a desalting water tank, a heating furnace, a temperature reducing and pressure reducing device, a steam superheater and a pressure reducing device. The waste heat boiler is used for efficiently recovering the heat of coke oven raw gas, multi-parameter steam is produced to be used by high-voltage power generation users and low-pressure steam users, internal steam of a process system is recycled, and the purpose of energy conservation is achieved; meanwhile, continuous operation of the waste heat recovery process system is guaranteed, and safe production of a coke oven is not influenced.

The invention discloses a multistage irrigation device for a plant planter. The planter comprises a first water tank and a second water tank, wherein the second water tank is formed in the upper portion of the first water tank, the first water tank is configured to supply water to the second water tank, the second water tank is configured to supply water to a planting basket, the second water tankis internally provided with a plurality of drainage holes, the other end of each drainage hole is communicated with the first water tank, and the drainage holes are of at least two types of heights.The second water tank is internally provided with a plurality of outfalls used for conveniently discharging excess water in the second water tank from the drainage holes into the first water tank forcycle collection, thereby not only saving water, but also avoiding potential safety hazards caused by the excess water in the second water tank. The outfalls are of different heights, thereby forminga plurality of irrigation stages, and the water level is controlled accurately to meet the humidity requirements of different plants.

The invention discloses a cooling bearing. The cooling bearing comprises a bearing seat, a pad base, a positive thrust plate, a first oil cavity, a second oil cavity, a cooler and an oil driving cover, wherein the pad base is fixed to the bearing seat; a supporting pad is arranged on the inner diameter side of the pad base, and a positive thrust pad is arranged on the front side of the pad base; the second oil cavity communicates with the first oil cavity through a hot oil inlet, and the cooler is installed inside the second oil cavity; the oil driving cover and the positive thrust plate form an oil driving cavity; an oil injecting groove is formed in the inner diameter side of the supporting pad and is of a spiral shape; an oil throwing cavity is formed in the inner diameter side of the positive thrust pad; and the oil driving cavity comprises a high-pressure oil outlet and an oil pumping port, the oil pumping port communicates with the second oil cavity, and the high-pressure oil outlet communicates with the oil injecting groove and the oil throwing cavity. The cooling bearing has high heat exchange efficiency and can effectively prevent a bearing pad from being burnt.

The invention discloses a hydro-generator provided with high-efficient oil-cooling bearings. The hydro-generator comprises a stator, a rotor, a spindle, a fixed outer housing and the oil-cooling bearings, wherein the rotor is coaxially and fixedly connected with the spindle; the stator is coaxially and fixedly connected with the fixed outer housing; two sides of the fixed outer housing are fixed on two ends of the spindle through the oil-cooling bearings; each oil-cooling bearing comprises a bearing seat, a bush base, a forward pushing force disc, a first oil cavity, a second oil cavity, a cooler and an oil carrying housing; each bush base is fixed on the corresponding bearing seat; a support bush is arranged on the inner diameter side of each bush base; the front side of each bush base is provided with the corresponding forward pushing force bush; each second oil cavity communicates with the corresponding first oil cavity through a hot oil inlet; each cooler is arranged in the corresponding second oil cavity; each oil carrying housing forms an oil carrying cavity with the corresponding forward pushing force disc; an oil injection groove is formed in the inner diameter side of each support bush; the inner diameter side of each forward pushing force bush is provided with an oil shedding cavity; each oil carrying cavity comprises a high-pressure oil outlet and an oil pumping opening; each oil pumping opening communicates with the corresponding second oil cavity; and each high-pressure oil outlet communicates with the corresponding oil injection groove and the corresponding oil shedding cavity. The hydro-generator has high heat exchange efficiency, and bearing bushes can be effectively prevented from being burned.

The invention discloses an electric water heater descaling device which comprises a solution barrel, an electric heating tube, a warming switch, a water pump, a water pump switch, an output tube, a return tube, an output control valve, an output exhaust valve, a backflow control valve, a backflow exhaust valve and a water heater water tank, wherein a water outlet and a water inlet are formed in the side faces of the solution barrel and are connected with the water pump and the return tube respectively; the electric heating tube is mounted at the bottom of the solution barrel; the heating switch is used for controlling the electric heating tube; the water pump switch is used for controlling the water pump; a cold water hole of the water heater water tank is connected with the water pump through the output tube; a drain outlet of the water heater water tank is connected with the solution barrel through the return tube; the output control valve and the output exhaust valve are mounted on the output tube; and the backflow control valve and the backflow exhaust valve are mounted on the return tube. The electric water heater descaling device is simple in structure, convenient to use, safe and reliable and high in descaling efficiency, and saves electricity consumption.

The invention relates to a device and method for preparing methane, particularly relates to a device and method for using high concentration CO contained in chemical tail gas for preparing methane, and belongs to the chemical technical field. The device includes a first section methanation reaction device, a second section methanation reaction device and a third section methanation reaction device, inlet feed gas and inlet water vapor pass through the first section methanation reaction device, the second section methanation reaction device and the third section methanation reaction device in turn to obtain a product gas, and the process uses a three section methanation reactor. The transformation hydrogen filling and methanation can be performed in the same section catalyst layer by direct methanation, at the same time, CO2 is cycled for methanation degree control of the process, system temperature rising is effectively controlled, the catalyst requirement and process difficulty are relatively small, and the device has the advantages of small water consumption, small temperature rise, high controllability, simple and easy separation and collection of by-products, and the like.

The invention provides a self-responsive self-power-generation water-storage type spray device. The device includes a supporting rod and a spray head; the spray head adopts an atomizing nozzle which is controlled by a solenoid valve, the supporting rod is hollow, the upper end of the supporting rod is communicated with a hollow cantilever, the spray head is located at the end of the cantilever, the bottom of the supporting rod is communicated with a water storage box, the water storage tank is internally provided with a water pump, the water pump is communicated with the spray head through flexible water pipes arranged in the supporting rod and the cantilever, the top of the supporting rod is provided with a solar photovoltaic panel and/or a wind power generation device, the rod body of the supporting rod is provided with a dust sensor, and the solar photovoltaic panel and/or the wind power generation device, the solenoid valve and the dust sensor are connected with a storage battery and a control unit through cables arranged in the supporting rod. The device can supply power to itself through the power generation device and is provided with the water storage device, the stability is high, the device can move and be used immediately, at the same time, the dust sensor is used for performing spraying work at the right time, and water and electricity are saved.

The invention discloses a saving type water heater pipeline. The saving type water heater pipeline comprises a water conveying pipe, a water outlet and a water inlet are formed in the two ends of thewater conveying pipe in a penetrating manner correspondingly, wherein a one-way valve is arranged in the water inlet; a plurality of deformation blocks are fixed to the inner wall of the upper side ofthe water conveying pipe; a compression plate is jointly fixed to the lower ends of the multiple deformation blocks; connecting belts are fixed to the two side walls of the compression plate; and a supporting plate is jointly fixed to the bottoms of the two connecting belts. The saving type water heater pipeline has the beneficial effects that a rotating strip is used for sensing heat to rotate,rotation of a cover plate is achieved, opening and closing of a water falling groove are finished, the water falling groove is closed when hot water is normally supplied, and hot water losses are avoided; and after the hot water stops being supplied for a period of time, the residual hot water is cooled, the water falling groove is opened, the residual cold water enters a water storage bag througha water discharging pipe to be stored, the residual cold water in the water storage bag can be discharged when cold water needs to be used, the residual cold water is effectively utilized, and the purpose of saving water resources is achieved.