116results about How to "Stable water supply" patented technology

Construction for greening housetop comprises base layer, moisture retention device, and planting layer arranged on the base layer, wherein the moisture retention device is arranged between the base layer and planting layer and contacts with the planting layer partly. The base layer, moisture retention device and planting layer together create a circumstance for steady and long term plant growth like ground. The construction can guarantee normal growth of plants in natural condition especially in bad conditions, and can make full use of nuisanceless natural resources such as rainwater.

The invention discloses a vapor cooling system for use in offline heat treatment of thin medium and thick plates, which comprises a water supply system, an air supply system, vapor spray nozzles and a control system, and is characterized in that: the vapor spray nozzles are symmetrically arranged above and below a rollway gap along the conveying rollway, the upper spray nozzle and an upper rollway are fixed on a movable upper frame, and the lower spray nozzle is fixed on a fixed frame; the water and air supply systems are led into the vapor spray nozzles by a shunt water collecting header anda shunt air collecting header respectively; a water supply pipe is provided with a valve, a flow meter and a regulating valve and is used for providing stable and reliable cooling water into an innerwater storage cavity in the spray nozzle from the side of the spray nozzle; and the control system consists of an experience management system and a PLC system, the experience management system makesa vapor cooling policy and cooling procedure and sends the cooling procedure to the PLC system to execute the cooling procedure, and the PLC system realizes the regulation of the intensity of coolingof the spray nozzle and the regulation of the state of water spraying. The vapor cooling system can solve the nonuniform cooling problem aroused by the high-pressure water jet cooling in the conventional thin medium and thick plate offline quenching.

Disclosed are a secondary-pressurizing energy-saving water-supply system for a high-rise building and an energy-saving water supply method. The secondary-pressurizing energy-saving water-supply system for the high-rise building comprises a valve, a main water inlet pipe, a mainstream flow sensor, a mainstream pressure sensor, a tee joint, an ejector, an auxiliary pressure sensor, a water pump, a first one-way valve, a control box with a controller, a virtual high-level water tank, a second one-way valve, a first electric adjusting valve, a second electric adjusting valve, an auxiliary flow sensor, a surge tank and a user pipeline which are connected mutually. The structure of the ejector is optimized, the technique of the virtual high-level water-tank is adopted, and the energy-saving water supply method is free in energy input, so that the rate of energy recovery of water in a municipal water pipe network is greatly increased, power consumption of the main pump is reduced by 10-35%, the energy is saved, the stability and security is improved and energy conservation and environmental friendliness are achieved significantly.

The invention discloses a cooling water supply device for a glass edging machine. The device comprises a grinding head motor and a motor shaft, wherein one end of the motor shaft is provided with a grinding wheel support; the grinding wheel support is fixedly connected with a grinding wheel; the motor shaft is a hollow shaft; the other end of the motor shaft is connected with a cooling water inlet pipe; the cooling water inlet pipe is connected with the other end of the motor shaft through a swivel joint; the grinding wheel is provided with a water baffle disk; and the grinding wheel and the water baffle disk are fixedly connected with the grinding wheel support through bolts in sequence. The motor shaft is the hollow shaft, so cooling water directly passes through the motor shaft through a high speed swirl joint; simultaneously, the water baffle disk is arranged on the grinding wheel end, the cooling water can be uniformly sprayed on the grinding surface to effectively ensure cooling water supply so as to ensure the grinding quality. Meanwhile, the water baffle disk is rigidly fixed on the grinding wheel, and the grinding wheel is fixed on the motor shaft, so position changes cannot happen, the stability of water supply is ensured, and the grinding quality is improved.

The invention discloses a feeding pump turbine steam source switching control method. According to the method, when a unit runs at the low load or a four-section steam extraction system is failed, a high-pressure switching valve can supplement steam according to a steam inlet pressure curve; in addition, when a steam-turbine generator is tripped or under the FCB working condition, logics of a feeding pump turbine steam admission governor valve and a high-pressure switching valve are quickly processed; when the feeding pump turbine four-extraction steam supply is interrupted, a cold re-high-pressure steam source can be quickly switched to a pump turbine so as to supply steam; and the water feeding flow is automatically adjusted according to the working condition of a boiler, so that a boiler by-pass system is maintained to run stably, and the water supply cut-off protection action of the boiler is avoided.

The invention discloses water supply equipment integrating vacuum inhibition and reverse flow compensation. The water supply equipment comprises a steady flow compensation tank. A steady flow tank consists of two cavity bodies and is divided into a prepressing cavity and the steady flow compensation tank, wherein the prepressing cavity is connected with a pressure stabilization energy accumulator; a prepressing self-balancing device is mounted at the bottom of the prepressing cavity; a reverse flow compensator is arranged below the steady flow compensation tank; the steady flow compensation tank is connected with the reverse flow compensator by a reverse flow compensation pipe; and the reverse flow compensator is connected with a user pipeline by a small-flow pressure maintaining pipe. A vacuum inhibitor is arranged in the steady flow compensation tank and close to a top wall; an outlet of the vacuum inhibitor is connected with the prepressing cavity; and when water enters the steady flow compensation tank, the vacuum inhibitor exhausts air in the tank into the prepressing cavity. The equipment solves the problems of pollution in the steady flow tank and external pollution of the outside air to tap water, and has a reverse flow compensation function.

The invention discloses an intelligent control system for a rice polishing machine. The intelligent control system comprises the rice polishing machine, a polishing machine detection system and a controller. The controller controls the polishing machine detection system through electrical signals. The polishing machine detection system comprises a finished product water content detection system, a feeding inlet opening degree detection and regulation device, a spindle rotating speed detection system and a main machine current detection system. By means of the intelligent control system for the rice polishing machine, the problem that flow rate control completely depends on the experience of operators is solved, the danger that rice caking happens to block the machine due to the extremely-high water content of rice is avoided, the operating state of the polishing machine can be detected and regulated in real time, and polishing quality of the rice is guaranteed; and meanwhile, the polishing machine can be better protected, and the service life of the polishing machine is prolonged.

The invention relates to a horizontal MVC evaporator. The horizontal MVC evaporator comprises a cylinder body, a condenser and a raw water inlet, wherein a first-level evaporation chamber, a second-level evaporation chamber and a third-level evaporation chamber are arranged in the cylinder body and are connected in series side by side and are respectively provided with multiple rows of horizontally arranged evaporation pipes. According to the horizontal MVC evaporator, by virtue of a horizontal pipe falling film evaporator, a system is only operated by virtue of an electrically driven vapor compressor, and except the vapor compressor, operation parts of the MVC evaporator are extremely few, so that the operation is simple, the operation energy consumption is low, and high-purity deionized water can be produced with low cost; the horizontal MVC evaporator can be applied to industries of factories, power stations, oil fields and the like which need to consume a large amount of high-purity deionized water; by virtue of the process, a stable, reliable and long-term boiler feed water source can be provided.

The invention relates to the technical field of agricultural underground irrigation, in particular to an energy-saving and environment-friendly three-dimensional underground infiltration irrigation device. The energy-saving and environment-friendly three-dimensional underground infiltration irrigation device comprises a vertical tank body, wherein the upper end and the lower end of the vertical tank body are provided with an upper sealing cover and a lower sealing cover respectively; the vertical tank body is provided with a plurality of infiltration pipes for infiltration irrigation around from top to bottom; the vertical tank body is connected with the infiltration pipes to form an infiltration irrigation unit; a water inlet pipe is arranged on the vertical tank body positioned above theinfiltration pipes; and a water inlet valve is arranged on the water inlet pipe. The energy-saving and environment-friendly three-dimensional underground infiltration irrigation device provided by the invention is not limited by regions, is more convenient and flexible to get water, and can not only connect with a pressurized pipeline, but also directly inject water manually, which fully solves the problem that conventional irrigation cannot be implemented due to hardening of road surfaces and uneven mountain slopes in urban greening, and greatly improves the survival rate of afforestation indesertified land.

The invention discloses a constant-head batch measurement device of soil saturated water conductivity by following a measurement method of LY / T 1218-1999.Measurement of Forest Soil Permeability. The measurement device mainly comprises a water supply cabinet used for controlling water pressure according to the principle of the Markov bottle, head retaining cylinders (annular cutters), sample annular cutters, a funnel bracket, beakers and electronic scales, wherein a parallel opening is formed in the water supply cabinet; the water supply cabinet is used for supplying a stable water source by adjusting the height of a water supply cabinet pressure adjustment / air inlet pipe; a hard pipe with a valve is connected with the water supply cabinet; valves are arranged on branched pipes of the hardpipe; one end of a hose pipe is connected with the valve of each branch pipe; the other end of each hose pipe falls into each head retaining cylinder; the head retaining cylinders are arranged above the sample annular cutters; connection parts between the head retaining cylinders and the sample annular cutters are fixed by elastic sealing rubber rings; an upper plate, a lower plate, funnels and amesh plate are arranged on the water collection funnel bracket; the beakers and the electronic scales are arranged under the funnels. The device is capable of measuring single sample or simultaneouslymeasuring multiple samples according to the number of the samples, and is low and controllable in cost, convenient and simple to use and convenient in popularization and application.

The invention relates to a filter and a coal mine underground water purification system thereof; the filter comprises two filter side plates, a filter shell and a filter screen, and the two filter side plates are respectively fixed at openings at two sides of the filter shell; an overflow shell is mounted at the top of the filter shell, an overflow weir is formed between the inner side of the overflow shell and the outer wall of the filter shell and communicates with the top of a water collecting tank in the water collecting shell, the bottom of the water collecting tank communicates with oneend of an overflow pipe, and the other end of the overflow pipe communicates with a purification water inlet pipe of a secondary purification module; a hollow filter cavity is formed in the filter shell, a V-shaped groove with the width gradually decreased from top to bottom is formed in the bottom of the filter cavity, a sludge auger is arranged in the V-shaped groove, a sludge auger shaft is fixedly sleeved with the sludge auger, and one end of the sludge auger shaft penetrates out of the filter shell and then is fixedly assembled with an output shaft of a sludge auger motor; countless through filter holes are formed in the filter screen, and a filter drain pipe is arranged above the filter screen and is used for conveying water filtered by the filter screen to a purification water inletpipe of a main purification module.

The invention discloses a seed vegetation block matrix suitable for an arid stony mountainous area and a preparation method thereof and relates to the technical field of seed seedling raising. The technical problems of low afforestation seeding emergence rate, low qualified seedling percentage and low survival rate of the arid stony mountainous area are solved. The seed vegetation block matrix suitable for the arid stony mountainous area is prepared from, by weight, 5-8 parts of clay, 2-5 parts of organic matter, 0.005-0.05 part of water-retaining agent and 0.005-0.05 part of slow release fertilizer. The preparation method comprises the steps that organic matter is collected, smashed and screened to obtain organic matter with the particle size of 40-60 mesh, then composting is performed, the composted organic matter, the clay, the water-retaining agent and the slow release fertilizer are fully mixed and stirred evenly, the prepared mixture is compressed by using a three-hole former or two-hole former with the diameter of 10 cm and the length of 15 cm to obtain the seed vegetation block matrix. The seed vegetation block matrix has the advantages of ensuring sufficient moisture and nutrient supply for seeds during germination and seedling growth and improving the emergence rate and preserving rate.

A peak load regulating pump station comprises a pressurizing pump set, a booster pump set, a pressure-superposed tank, a water tank, a control cabinet, a control valve, a drainage pump set, an upper monitoring system, a sensor and a pipeline valve, wherein the water tank is divided into a water storage area and an equipment area by a separation plate; the booster pump set is connected with tap water via the pressure-superposedtank; water is supplied to the pressurizing pump set via the water tank; the sensor is installed on a tap water inlet pipe net; all devices of the intelligent peak load regulating pump station are integrated; when pressure of the tap water is met, water can be supplied via pressure superposition by the booster pump set , so energy conservation can be achieved; when the upper monitoring system detects that pressure of a peak area of the water tap is inadequate, the booster pump set is automatically stopped and the pressurizing pump set is started, reserved water of the water tank provides pressure, so tap water pipe net pressure can be improved and peak load regulation of supplying capacity can be achieved.

The invention discloses a distributed water-steam-cold-heat-electricity combined supply device and method. The device comprises a cooling and heating module, a power supply module, a humidifying module, a power consumption module and a water consumption module; operation electricity is provided by a fuel cell stack, when heating is performed, part of circulating water directly enters an outdoor heat exchanger, the other part of the circulating water enters a cell cooling loop before entering the outdoor heat exchanger and further enters the outdoor heat exchanger to exchange heat with a compressor loop and circulate, the stack can be cooled and the circulating water can be preheated while the heating target is realized, the work of the compressor is reduced while the temperature of the stack is reduced, and the operation efficiency of the stack and the whole device is improved; when cooling is performed, part, flowing out and then flowing in a cooling tower, of the outdoor circulating water directly enters the outdoor heat exchanger, the other part enters the cell cooling loop, further flows into a cooling tower water tank again and flows out for circulation, the stack can be cooled while the cooling target is realized, and the operation efficiency of the stack is improved.

The invention belongs to the field of water production, and relates to a mixed bed regeneration improvement process, a system and application. The process comprises air scrubbing, backwashing pre-layering, primary drainage, alkali feeding failure, backwashing layering, standing, secondary drainage, pre-injection, acid and alkali feeding, replacement, after-replacement drainage, regeneration mixing, regeneration irrigation, regeneration forward washing, and operation. The backwashing effect is enhanced by compressed-air scrubbing, so that the resin is fully loosened. The subsequent backwashingis facilitated. Meanwhile, in the alkali feeding failure step, the alkali feeding mode is adjusted, a positive discharge valve is changed into a middle discharge valve, alkali can fully and only exchange with upper-layer anion resin, meanwhile, a small amount of upper-layer cation resin fails, the alkali feeding time is shortened, the alkali consumption can be reduced, and the regeneration effectis improved.

The invention provides self-balancing air supply type high level storage direct water supply equipment, which consists of a non-negative pressure flow stabilizing tank, an air supply tank, a control valve, a switching valve, a water pump, a control cabinet and an air pressure storage tank, wherein a clapboard is arranged in the non-negative pressure flow stabilizing tank, and divides the non-negative pressure flow stabilizing tank into two parts, namely a flow stabilizing chamber and an adjusting chamber; the flow stabilizing chamber is connected with a water inlet pipe; water output by the flow stabilizing chamber is connected to the water pump through a pipeline; the top of the adjusting chamber is provided with the air supply tank; the top of the air supply tank is provided with an air filter and an air stop device; a water outlet pipe is provided with an outlet pressure cage; a water outlet manifold is connected with a water utilization pipe network; and the air pressure storage tank is arranged at the lowest water utilization rate point of the water utilization pipe network. The equipment adopts self-balancing air supply, and the air pressure storage tank is arranged at the lowest water utilization rate point, so that the flow can be adjusted, the pressure of the pipe network can be stabilized, small-flow water supply can be realized, effects of supplying water stably and saving energy during operation are achieved, the adjustable volume of the system can be increased, and investment and materials are saved.

The invention relates to an efficient and energy-saving rural water supply purification device and a purification process thereof, and belongs to the field of water treatment. The efficient and energy-saving rural water supply purification device comprises a treatment tank, a water inlet pipe, a filter assembly, a backwashing assembly and a sludge pipe, and the filter assembly comprises a water collecting pipe installed in the treatment tank, a water discharging pipe communicated with the water collecting pipe and a plurality of microporous ceramic filter pipes installed on the water collecting pipe. The top end of the microporous ceramic filter pipe is blocked, the bottom end of the microporous ceramic filter pipe is communicated with the water collecting pipe, the backwashing assembly comprises air compression equipment and an emptying pipe connected with the air compression equipment, and the emptying pipe, the water discharging pipe and a water outlet pipe are communicated by arranging a three-way valve. The efficient and energy-saving rural water supply purification device integrates micro-pore filtration and sedimentation filtration, has the advantages of small occupied area, low energy consumption, high water purification efficiency, difficulty in blockage and the like, and is suitable for being used in rural environments with relatively poor electric power facilities.

The invention provides fully-enclosed flow-stabilized and pressure-superposed energy storage water supply equipment. According to the fully-enclosed flow-stabilized and pressure-superposed energy storage water supply equipment, the problem that a common pressure-superposed water supply product has no water storage capacity or has extremely small water storage capacity is solved, and dual functionsof water storage and energy storage are introduced into a pressure-superposed water supply system; the water contention degree of a plurality of secondary water supply stations to a municipal primarywater supply pipe network is greatly reduced, the reactive power loss of water supply is greatly eliminated, the water supply efficiency is improved, and continuous, safe and high-quality water supply for users can still be realized under the condition that the flow quantity and pressure of a municipal tap water pipe network cannot meet user requirements continuously; even under the condition that the water supply of the municipal tap water pipe network is completely cut off, the water supply still can continue for a number of minutes to a number of hours; positive pressure full enclosing ofwater storage facilities can be realized, the purposes of chlorine maintaining, self cleaning and no cleaning are achieved, and the fully-enclosed sanitary safety requirement in the Chinese water supply standard is fully met; and the blank that no secondary water supply products of other forms exists between pressure-superposed water supply and water tank (pool) water storage water supply in the secondary water supply products for many years is filled up.

A pressure-superposing water feeding device is composed of a stabilizing tank, a water box, a pressure-superposing pump, a boosting pump, an electrically-operated valve, a valve assembly, a connection pipe, a control instrument and a control cabinet, wherein the stabilizing tank is parallelly connected with the water box, the electrically-operated valve is installed on a water outlet of the stabilizing tank, the boosting pump is serially connected with the pressure-superposing pump, a water inlet pipe of the boosting pump is connected with the water box, a water outlet pipe of the boosting pump and a water outlet pipe of the stabilizing tank are parallelly connected with a converging pipe at the water inlet of the pressure-superposing pump, and a water outlet pipe of the pressure-superposing pump is connected onto a water outlet main pipe. When the pressure-superposing water feeding device works normally, tap water is performed with pressure-superposing boosting on the pressure-superposing pump on the basis of the tap water pressure and supplied to users for use through the stabilizing tank, so that the aim of energy saving is achieved. When pressure flow of the tap water cannot meet the using requirement, the electrically-operated valve at the water outlet of the stabilizing tank is gradually turned down, the pressure of the tap water is controlled to be stable by controlling the flow of the tap water passing through the stabilizing tank, the boosting pump operates automatically to pressurize the water in the water tank so as to meet the requirement for flow of the pressure-superposing pump, and stabilization in water supplying of the system is ensured.

The invention discloses a water supply control method, equipment and storage medium of a water tank of a present-flush beverage vending machine. The water supply control method includes that water quantity in the water tank is detected in real-time, and a first bucket is controlled to supply water to the water tank when the water quantity in the tank is lower than a preset value; whether a float switch in the water tank triggered in the preset time is detected; when the float switch is not being triggered in the preset time, a second bucket is controlled to supply water to the water tank. Through detecting the water quantity in the water tank, the water supply control method, equipment and storage medium of the water tank of the present-flush beverage vending machine can switch buckets tosupply water to the water tank to guarantee stable water supply for the water tank when the water tank cannot obtain enough water supply, and can also indirectly prompt operators to replace buckets, give managers enough time to replace buckets, and ensure the normal use of the equipment.

The invention discloses a building hotel household centralized purification and energy-saving water supply system. The system comprises a water supply end, a primary filtering end, a pressurizing end,a core filtering end, a recovery end, an automatic control end, a water use end and a cleaning end; and the water supply end is connected with the primary filtering end, the primary filtering end isconnected with the pressurizing end, the automatic control end is electrically connected with the primary filtering end and the pressurizing end, the pressurizing end is connected with the core filtering end, and the core filtering end is connected with the water end, the recovery end and the cleaning end. According to the system, building water supplying is effectively stable, the situation thatpeople cannot normally use a water source is reduced, and the water supply facility is perfect; meanwhile, the water source is purified and saved, the waste of water resources is reduced, the proportion of the purified direct drinking water to the concentrated water is two to one, the water production efficiency is greatly improved, the concentrated water is fully utilized, the situation that concentrated water flows directly into a sewer is avoided, waste is reduced, and resources are saved.

The present invention relates to connecting hose supporter for washer. The parts set in the top cover of washer includes water feeding terminals connecting to water source, detergent box connecting part connected to partial water feeding terminals for supplying water to inside the washer via the detergent box, connecting hose connected to the other water feeding terminals to supply water to side of the top cover, track formed on the bottom of the top cover for the connecting hose to insert inside, etc. Inserting the connecting hose into the track can obtain firm support.

The invention discloses a towerless automatic water-supply vacuum tube well. The towerless automatic water-supply vacuum tube well comprises a drill hole, a well casing is arranged in the center of the drill hole, the well casing is composed of a water taking section and a pump mounting section, and the pump mounting section is internally provided with a water pumping device and a water supply pipe from bottom to top in sequence. The top of the well casing is provided with a flange, and a seal cover is arranged on the top of the flange; a pressure sensor is arranged on the water supply pipe; amaintenance chamber is arranged above the drill hole, and a cover plate is arranged on the top of the maintenance chamber. The structure is simple, the manufacturing cost is low, the structure that awell mouth is sealed is adopted, noxious substances and contaminants are effectively prevented from falling into a well, and potential safety hazards of drinking water are eliminated. Through the cooperation of the well casing and the water pumping device, the water taking section in the well is hermetically isolated from the pump mounting section, vacuum is formed in the water taking section, and the water yield of the tube well is increased; air in the well casing is compressed by water in the pump mounting section to form elastic pressure water, it is ensured that the water supply pressureand the water supply amount are stable, and the towerless automatic water-supply vacuum tube well has the advantages that the water is stably supplied, the water is safe, and the well occupies littlespace.

The invention discloses an annular pipe network irrigation system. The annular pipe network irrigation system comprises a first part, a main pipe, sub-main pipes, water supply plugs, branch pipes, andcapillary pipes, wherein the first part comprises a pressurization system and a filtration system, the first part communicates with a water source, the main pipe communicates with the first part, thesub-main pipes communicate with the main pipe, the water supply plugs are arranged on the sub-main pipes, the branch pipes communicate with the sub-main pipes through the water supply plugs, the capillary pipes communicate with the branch pipes, the sub-main pipes are at least two, one end of each sub-main pipe communicates with the main pipe, the other ends of the sub-main pipes communicate witheach other, and an annular pipe network is formed between the main pipe and the sub-main pipes. The system has the advantages of small water loss, stable water supply, convenient maintenance and highpipeline utilization rate, and is mainly used for conveying water in farmland irrigation systems.

The invention provides novel floating heat exchanger equipment. The novel floating heat exchanger equipment comprises a safety valve, a hot water opening, a branched pipe connector, a pressure gauge, a water-distribution reactor, supporting frames, a condensate outlet, a sewage discharging opening, a steam inlet and a shell. The safety valve is arranged at the top of the shell and embedded into the surface of the shell. The hot water opening is formed in one side of the safety valve, and the branched pipe connector and the safety valve are symmetrically arranged through the hot water opening. The sewage discharging opening is formed in the bottom of the shell, and the steam inlet is formed in one side of the sewage discharging opening. The condensate outlet is formed in one side of the sewage discharging opening, and the condensate outlet and the steam inlet are symmetrically formed. The water-distribution reactor is installed at the top of the sewage discharging opening, and one end of the water-distribution reactor is communicated with the shell. The pressure gauge is installed on the surface of the shell and connected with the interior of the shell. The supporting frames are installed at the bottom of the shell and symmetrically distributed on the two sides of the sewage discharging opening. The left and right symmetrical structure is adopted, design is simple, and installing and using are convenient.

The invention discloses a water supply device for a medium plate cooling after rolling system, which comprises a cooling manifold. The water supply device also comprises a high cistern, wherein the cooling manifold is connected with the high cistern; the highest liquid level and the lowest liquid level are prearranged in the high cistern, and have a difference value H; and the sectional area (unit: m2) H (unit: m) of the high cistern is 158-70. Through the high cistern with large sectional area, which is arranged in the water supply device and is connected with the cooling manifold, the cooling manifold can obtain stable water supply pressure, and can instantly supply plenty of water so as to ensure an excellent cooling effect.

The invention discloses a new energy power device for a gardening mower. The structure of the new energy power device comprises a mounting box frame, a solar panel covering film, a rotator, a first fastener, a second fastener, a third fastener, a pedal shaft and an internal power transmission device, wherein the solar panel covering film is glued above the mounting box frame, and the internal power transmission device is positioned below the solar panel covering film. According to the new energy power device provided by the invention, a user can select whether to enable solar energy to store electricity according to lighting conditions when using the gardening mower, so that the flexibility of selective electricity storage is high, the damage rate is reduced, and the service life of a solar panel is prolonged; the operation of two motors is realized through water supply, the power supply is distributed, and the use is convenient, so that fixed power storage is realized, the occurrenceof power failure is avoided, the pressure value of water supply can be further improved, the power supply is more stable and rapid, and a worker can also perform manual power supply operation throughpedals of the gardening mower; and a plurality of power supply modes effectively avoid the situation of power failure when the mower works.

The invention relates to a modified water-ring vacuum pump water supply device which comprises a water-ring vacuum pump body and an inlet pipeline. The modified water-ring vacuum pump water supply device is characterized in that the water-ring vacuum pump body is connected with a vapor-water separator through the inlet pipeline, the vapor-water separator is connected with a cooling tank through a return water pipe, a water pump is disposed on the return water pipe, the cooling tank is connected with the water-ring vacuum pump body through a cooling water inlet pipe, an inflow control device is disposed on the cooling water inlet pipe, and a filtering device is disposed on the inlet pipeline. The modified water-ring vacuum pump water supply device has the advantages that the modified water-ring vacuum pump water supply device is simple in structure and convenient to use, the vacuum pump scales less easily, water supply is stable, and vacuity is stabilized.

The invention discloses a large-capacity integrated pure water supply system for a laboratory. The system comprises a pre-treatment unit, and the like. An original water pump, an automatic active carbon filter, a front filtering assembly, and a micro-filtration membrane assembly are sequentially connected. A pressure detecting device, and the like are connected between the original water pump and an intelligent programmable control system. An advanced treatment unit comprises a high pressure pump, a reverse osmosis membrane assembly, a flow detecting device, and a second flowmeter, which are connected in sequence. The high pressure pump is connected to the micro-filtration membrane assembly. A one-key disinfection unit is internally provided with a medicine feeding box, which is connected to the reverse osmosis membrane assembly. A fine treatment unit comprises a third flowmeter, an electrodeionization module, a resistivity meter, and a cone-base water tank, which are connected in sequence, wherein the third flowmeter is connected to the second flowmeter; and the cone-base water tank is provided with an air filter and an immersed UV bactericidal lamp and is connected to a water supply pump. According to the invention, the problem of secondary pollution of water can be effectively avoided; automatic filtering and washing can be carried out according to set time; and the working strength is reduced.

The invention discloses a purification module and a coal mine underground water purification system thereof. The purification module comprises a mixing tank, a stirring tank and a settling tank; wherein the stirring tank comprises a stirring tank body, and a hollow stirring inner cavity is formed in the stirring tank body; a third mounting disc, a second mounting disc, a stirring wheel, a swingingdisc, another stirring wheel and a first mounting disc are sequentially mounted in the stirring inner cavity from bottom to top; the third mounting disc and the bottom of the stirring shaft can be circumferentially and rotationally assembled; the second mounting disc, the first mounting disc and the stirring drum can be circumferentially and rotationally assembled; the two stirring wheels sleevethe stirring drum in an axially slidably and circumferentially unrotatably matched manner; the swing disc is sleeved and fixed outside the mixing drum; a through stirring barrel drainage groove is further formed in the position, close to the first mounting disc, of the stirring barrel, a hollow stirring inner barrel is arranged in the stirring barrel, a water pumping auger is mounted in the stirring inner barrel, and the outer edge of the water pumping auger is tightly attached to the inner wall of the stirring inner barrel in a sealed mode and fixed to the stirring shaft in a sleeving mode.