233 results about "Ballcock" patented technology

A combination beer container and dispenser includes an outer container having a top section provided with an opening centrally formed therein. The top section includes a removable lid selectively positional in the opening. The outer container further has front and rear sections and includes a plurality of flange portions extending inwardly and orthogonally from the front and rear sections. An inner container having a cylindrical shape defines a cavity therein. A mechanism for dispensing beer from the keg and a mechanism for securing the keg within the inner container are also included. An axle having opposed end portions is positioned in a bore. A drain cock is directly conjoined to the rear and is manually adaptable between open and closed positions. A plurality of wheels are conjoined to the end portions of the axle. Such wheels include coextensive and juxtaposed ridges for providing traction.

The invention provides a fish tank bottom filter filtering system. According to the scheme, overflow plates or overflow columns are not arranged, the water level of a fish tank can be freely adjusted, even if the fish tank is not managed by people for a long time, the phenomena that water circulation is suspended due to dropping of the water level of the fish tank, a water pump is burnt out, and water quality is deteriorated to cause dropping of aquatic life energy and death of aquatic lives can be avoided. In addition, according to the scheme, the water level of a bottom filter tank is stable, a protein separator and other cultivation equipment are convenient to manage, and a large number of workloads of feeders are reduced. Through a designed round gasket 19 and a designed annular gasket 20, the problem of the poor closing effect caused by aging and abrasion of gaskets can be well solved, in a power failure state, due to the fact that a water pump 10 can not convey water of the bottom filter tank 16 into a fish tank 1, the problems that the water level of the fish tank can drop and the water level of the bottom filter tank rises and then water overflows due to the poor closing effect are solved. A valve 17 can discharge water from a main water inlet pipe, water in the fish tank can be conveniently and quickly emptied in necessary, in addition, sand, residues, animal skeletons and other solid-state garbage deposited in the main water inlet pipe can be completely cleaned. A tapered piston 6, a perforated plate 7 and a floating ball 9 are combined to control a water switch of a pressure chamber water outlet pipe 26, and compared with a lever type float valve, the fish tank bottom filter filtering system is firmer and more durable. In addition, the perforated plate 7 can be conveniently demounted, then, solid-state matter accumulated inside the fish tank can be conveniently cleaned, and blockage can be avoided.

The invention discloses a roof rainwater collecting system, which comprises a roof, a rainwater collecting groove, a primary filtering device, a split-flow device, a reverse flushing filtering device and a rainwater collecting barrel, wherein the rainwater collecting groove is formed at the lower edge of the roof; the primary filtering device is arranged at the lower part of a water outlet opening of the rainwater collecting groove in a non-contact way, and can be used for intercepting sundries with large sizes to prevent a water passing pipeline from being blocked; an intercepting regulating rod of the split-flow device can intercept the rainwater from entering a regulating cavity so as to raise a floating ball valve; the early stage rainwater split-flow and the later stage pure water collection can be realized; the reverse flushing device is provided with a first filtering screen, a second filtering screen and a flushing device; the filtration on the collected rainwater can be realized; when pipeline accumulated water increase is caused by the blockage of the first filtering screen and the second filtering screen by filtering sundries, under the rainwater static pressure effect in the water passing pipeline, a piston is driven to move, a flushing outlet is opened; and the automatic flushing on the reverse flushing device can be realized. The roof rainwater collecting system has the dual filtering and early stage rainwater split-flow function; and the rainwater collection and utilization efficiency can be improved.

The invention relates to a rainwater well with purification and storage functions. The top of an inner well is fixedly connected with a fine screen overturning plate with a floating ball valve; the floating ball valve drives the fine screen overturning plate to rotate; a weir plate is arranged between one side of the well mouth of the inner well and the fine screen overturning plate; a sedimentation groove is formed below the fine screen overturning plate; a filtering net is arranged between an outlet of the sedimentation groove and the weir plate; a water distribution plate with uneven gaps is arranged below the sedimentation groove; biological filler is arranged in a cavity formed by the water distribution plate with the uneven gaps and the bottom of the inner well; an outer well built by water permeable bricks and a reservoir are arranged outside the inner well; channels between the inner well and the outer well are arranged at the two sides of the exterior of the inner well; the reservoir is internally provided with an overflow wall; a drainage pipeline is arranged at one side of the bottom of the reservoir; a rainwater well coarse screen is arranged at the top of the outer well. At the initial period, rain falls into the sedimentation groove in the upper portion of the inner well, the water level rises to drive a floating ball to rise to make the fine screen overturning plate closed, during long-time rainfall, rainwater directly flows into the reservoir through the channels between the inner well and the outer well and is mixed with treated rainwater at the initial period, and mixed rainwater flows into the reservoir for storage.

The invention discloses a full-automatic adjustable controller for draining off the water at the bottom of an oil tank, which is characterized in that an openable-closable floating ball valve 4 is arranged on the side wall of a tank body, one end of a drainage tube is connected with a first valve barrel 17, and the other end of the drainage tube is connected with a first floating ball 1 by a connecting rod; the upper end of a second floating ball 8 is connected with a guide bar, and the lower end of the second floating ball 8 can be contacted with a valve seat 9 of the second floating ball 8 so as to form a valve; the upper end of the first valve barrel 17 is the valve seat 9, the inside of the valve seat 9 is provided with a second valve barrel 10, the two sides of the lower part of the second valve barrel 10 are respectively provided with a small hole, the inside of the second valve barrel 10 is provided with a rubber ball which is arranged on a water outlet at the lower part of thesecond valve barrel, and the rubber ball is connected with the bottom of the second floating ball 8 by a communicating rod. The full-automatic adjustable controller disclosed by the invention has theadvantages that: the structure is simple, and the drainage height can be adjusted conveniently, therefore, the full-automatic adjustable controller is suitable for various occasions and media with different oil-water density differences; and through setting waterlines, the full-automatic control on a water drainage process can be realized without man-made operations. Through adjusting a balance weight on the connecting rod, the dead-weight of the floating ball can be adjusted, and an oil-water interface adjusting effect also can be achieved. The full-automatic adjustable controller disclosed by the invention can be widely applied to various oil tanks for storing oils in different types and with different density differences.

The invention provides a gas well fracturing flow-back fluid separation device, which includes a gas-liquid separation tank. The upper air outlet of the gas-liquid separation tank is provided with an upward floating ball valve, the lower liquid outlet is provided with a downward floating ball valve, and a baffling separation plate is disposed between the upward floating ball valve and the downward floating ball valve. One side inlet of the gas-liquid separation tank is connected to a flow-back fluid inlet through a pipeline. The pipeline between the gas-liquid separation tank and the flow-back fluid inlet is also connected to an energy dissipater, the upper air outlet of the gas-liquid separation tank is in connection with a gas collector through a pipeline, the gas-liquid separation tank lower liquid outlet is connected to a liquid-solid separator through a pipeline. The fracturing flow-back fluid separation technology and device provided by the invention adopt vertical separation, and the formed liquid level is high, thus being convenient to control the liquid outlet. The air outlet and liquid outlet adopt floating ball valve control, thus realizing only liquid can be discharged through the liquid outlet and only gas can be discharged throught the air outlet when the gas-liquid ratio is very large or small.

The invention relates to an automatic cutting liquid matching and stirring device which comprises a stirring bucket, wherein a cutting liquid pumping tube is arranged at a first inlet end of the stirring bucket; one end of the cutting liquid pumping tube is connected with a pump; the pump is connected with a cutting liquid raw material tank through a pipeline; a tap water tube is connected to a second inlet end of the stirring bucket; a tap water source is connected to one end of the tap water tube; the cutting liquid pumping tube and the tap water tube are both connected with electromagnetic flow control valves; the electromagnetic flow control valves are connected with a PLC; the stirring bucket is internally provided with a ball float valve; the link rod of the ball float valve respectively connected with the electromagnetic flow control valves; the stirring bucket is internally provided with stirring blades; the stirring blades are connected with a stirring shaft; the stirring shaft is connected with a motor; the motor is connected with the PLC through a frequency converter. By adopting the automatic cutting liquid matching and stirring device, the concentration precision in mixing a cutting liquid is improved, uniform stirring can be achieved without manual stirring, the labor is saved, and the working efficiency is improved.

The invention discloses a system for detecting a heat exchanger of an air conditioner, which comprise a low-pressure circulating tank (5), a liquid delivery pump (6) and a detected heat exchanger (8), wherein the low-pressure circulating tank (5) is connected with an input end and an output end of the detected heat exchanger (8) through an indoor input pipe (7) and an indoor output pipe (9) respectively; the liquid delivery pump (6) is positioned between the low-pressure circulating tank (5) and the indoor input pipe (7); and the low-pressure circulating tank (5) is connected with an outdoor unit of the air conditioner through an outdoor output pipe (13) and an air return pipe (10). The system is characterized in that the joint of the low-pressure circulating tank (5) and the outdoor output pipe (13) is provided with a ball float valve (4) for controlling the coolant conveying quantity of the outdoor output pipe (13), and the ball float valve (4) is in the low-pressure circulating tank (5). The detection system of the invention combines an enthalpy difference laboratory or a thermal balance laboratory for use, and can quickly compare the heat exchanging performances of different heat exchangers; besides, the system has the advantages of simple structure, convenient mounting, low cost and high use value.

The invention discloses a novel evaporative condenser. The novel evaporative condenser is composed of a shell of the condenser, a heat exchanger, a fan, water spraying devices, a water pump, a sump tank, a pipeline and a ball cock. The heat exchanger is a total-aluminum microchannel heat exchanger. One water spraying device is arranged between the side faces of every two adjacent middle flat pipes of the heat exchanger. The water pump is connected between the sump tank and the water spraying devices to convey cooling water inside the sump tank to the water spraying devices through the pipeline. The water spraying devices spray water to the side faces of the middle flat pipes on the two sides respectively, and sprayed water flows to the bottoms of the middle flat pipes from the tops of the middle flat pipes along the side faces of the middle flat pipes. The fan drives external air to enter channels on the water spraying side of the middle flat pipes of the heat exchanger, and therefore air and water can conduct heat exchange with refrigerant in the middle flat pipes of the heat exchanger at the same time. The novel evaporative condenser has the advantages of being high in heat transfer efficiency, low in cost, small in wind resistance on the windward side, easy to manufacture and convenient to clean.

A collapsible floating apparatus for controlling a valve includes a floating device and a collapsible lever. The collapsible lever includes a first member rotatably coupled to the valve, and a second member attached to the floating device at one end and rotatably coupled to the first member adjacent another end. The apparatus has a retracted position for shipping and storage, and operational positions. In the position, the second member, or the first and second members together, are brought adjacent to the valve. In operational positions, the first and second members act as a single lever to relay the buoyancy of the floating device drives to the valve. An adjusting member is provided for adjusting a relative position or angle between the first and second members, which in turn adjusts a water level.

A water level signal device for a high-position pool comprises a water pumping pipe 9, the high-position pool 5 and a water pump 2, wherein a water outlet is formed in one end of the water pumping pipe 9, a water inlet is formed in the other end of the water pumping pipe 9, the water outlet of the water pumping pipe 9 is communicated with the high-position pool 5, the water inlet of the water pumping pipe 9 is communicated with a water outlet of the water pump 2, and an electromagnetic flowmeter 3 and a float valve 4 are arranged on the water pumping pipe 9. The electromagnetic flowmeter 3 is arranged close to the water inlet of the water pumping pipe 9, and the float valve 4 is arranged close to the water outlet of the water pumping pipe 9. When water in the high-position pool 5 rises to the predetermined position, a floating ball drives the float valve to be closed, water outlet quantity of the water outlet of the water pumping pipe decreases, and flow velocity measured by the electromagnetic flowmeter decreases. Therefore, whether water in the high-position pool rises to the predetermined position can be judged according to changes of water flow velocity measured by the electromagnetic flowmeter 3 at a water pumping control point at a lower position, and users can stop pumping water to prevent water from overflowing out of the high-position pool. The water level signal device for the high-position pool can be matched with water level telemetering devices to find faults of the water level telemetering devices in time.

The invention discloses an intermittent intelligent water replenishment control system for a water container. The water container is equipped with a remote control floating ball valve and has a waterinlet connected with a municipal pipe network. The intermittent intelligent water replenishment control system comprises a controller, an electric flow valve, an electric switch valve, a pressure sensor and a liquid level sensor. The liquid level sensor is arranged at the bottom of the water container for real-time detection of a liquid level value in the water container. The electric flow valve and the electric switch valve are connected in series to the control pipeline. The water inlet of the control pipeline is connected with the municipal pipe network, and the water outlet of the controlpipeline is connected with the control port of the remote control floating ball valve. The pressure sensor detects the pressure value of the municipal pipe network in real time. The controller, when acurrent liquid level drops to a lower limit liquid level, opens the electric switch valve and controls the opening and closing degree of the electric flow valve according to the current pressure value, and when the current liquid level rises to the upper limit liquid level, turns off the electric switch valve. The intermittent intelligent water replenishment control system can intelligently control the water replenishment flow rate, thereby protecting the municipal pipe network.

The invention relates to a variable-flow-channel waterproof hammer air valve and a design method. The variable-flow-channel waterproof hammer air valve comprises a valve body, wherein an air intake and exhaust port is arranged at the top of the valve body; a ball valve seat and a floating ball are arranged below the air intake and exhaust port; at least one swing check valve that can be opened inward is arranged in the valve body, and comprises a swing valve clack, a variable-flow-channel air intake port, equipment for restricting the opening degree of the swing valve clack, and sealing equipment; the swing valve clack is connected with the valve body in a hinging manner; and the variable-flow-channel air intake port is controlled by the swing valve clack to open and close. The air intakeoperation of the air valve is performed through the air intake and exhaust port as well as a variable flow channel during the air intake process, and the air exhaust operation is performed only through the air intake and exhaust port during the air exhaust process, so that the air intake and exhaust channel area can be changed, and then the quick air intake effect and the slow air exhaust effect can be achieved; the problem that the throttle ring stress and closing process is uncertain due to the strong three-dimensional characteristic of the air exhaust process can be solved; the problem thatthe spring acting force is unstable can also be solved; and the inflow area and the outflow area of the air valve can be set arbitrarily according to the numerical simulation result, thereby meetingthe design requirements conveniently and quickly.

The invention discloses a water tank of a water purifying machine with an automatic circulating control function and the water purifying machine. The water tank of the water purifying machine comprises a water storage bin of the water tank, a control bin of the water tank, an upper cover plate, flow guide pipes of the water storage bin and the control bin, a floating ball valve and an automatic water level valve, wherein the control bin of the water tank is arranged outside the water storage bin of the water tank; the upper cover plate is used for sealing the upper ends of the water storage bin of the water tank and the control bin of the water tank; the flow guide pipes of the water storage bin and the control cabin are arranged between the upper ends of the water storage bin of the watertank and the control bin of the water tank, and are used for guiding the water in the water storage bin of the water tank to flow into the control bin of the water tank; a floating ball of the floating ball valve is positioned under the middle part of the interior of the water storage bin of the water tank, and a valve body of the floating ball valve is arranged between the water storage bin of the water tank and the control bin of the water tank, and is used for controlling the communication and cutoff of the water storage bin of the water tank and the control bin of the water tank; the automatic water level valve is arranged at the upper part of the interior of the control bin of the water tank, the pure water is introduced via a water inlet of the automatic water level valve, and a water outlet of the automatic water level valve is positioned in the water storage bin of the water tank. The water tank has the advantage that under the cooperation of the water storage bin, the controlbin, the automatic water level valve and the floating ball valve, the water injection of the water purifying machine can be automatically and circularly controlled without additional arrangement of any electronic component.

The invention relates to a drip irrigation device, in particular to a zero-pressure drip irrigation system which is composed of a water storage tank, a balance water tank, a water supply pipe, water diversion branched pipes, water diversion capillaries and capillary drippers. Each capillary dripper is composed of a dripper cover and a capillary bundle which is mounted in a bayonet of the dripper cover, each dripper cover is mounted at the upper end of the corresponding water diversion capillary, the lower end of each water diversion capillary is connected onto a branch port of the corresponding water diversion branched pipe, the lower end of each capillary bundle extends into the corresponding water diversion branched pipe through in-pipe space of the corresponding water diversion capillary while the upper end of the same is led out of the bayonet of the corresponding dripper cover, an inlet end of each water diversion branched pipe is connected onto a branch port of the water supply pipe, an inlet end of the water supply pipe is connected onto a supplied water output port of the balance water tank, a floating ball valve is connected into the balance water tank, and an inlet end of the floating ball valve is connected onto a water outgoing port of the water storage tank. A capillary principle is utilized to achieve the objective of drip irrigation, the water supply pipe does not need pressure, and the drippers cannot be blocked, so that equipment purchasing expense and running expense are lowered, and drip irrigation technology is enabled to be inexpensive.

Provided is an intelligent double control firefighting pressurization pressure-stabilizing water supply device. Running of a pressure-stabilizing water pump and an air compressor is respectively controlled by utilizing control signals collected by a liquid level float valve arranged on an air pressure water tank and an electric contact pressure gauge through a PLC intelligent control cabinet, the air pressure ratio in the water tank is controlled strictly by the double control effect, gas is supplemented when lacked, the regulating water quantity is increased, and the regulating water quantity during a firefighting period is guaranteed. Compressed gas in the tank is effectively prevented from entering a pipe network and having the reaction of combustion supporting during the power outage and water supply stopping period of the device due to the arrangement of air stopping valves in the tank. The whole device detects pressure of the air pressure water tank, the water volume and water level conditions of a water box through PLC centralized control, corresponding water supply parameters are displayed and set and water supply records are inquired on a touch screen, and the intelligent double control firefighting pressurization pressure-stabilizing water supply device has stability in control and convenience in management, saves energy, performs control in a more standard mode, runs distinctly, is low in failure rate and is always in an ideal state.

The invention discloses a heat pipe type energy-saving central air-conditioning cooling system. The central air-conditioning cooling system comprises a cooling tower and is characterized in that a heat pipe device is installed in a case of the cooling tower, cool air inlets are mounted on two sides of the case of the cooling tower, a hot air outlet is arranged at the top of the case of the cooling tower, and an induced draft fan is mounted at the hot air outlet; the heat pipe device is a spiral heat pipe, a forest-type heat pipe or a branch-shaped heat pipe, the evaporation section of the heat pipe contacts with a working solution in a junction box, the cooling section contacts with cool air induced by the cool air inlet, hot air formed by the heat pipe after heat is absorbed by the cool air is discharged out of the cooling tower through the induced draft fan, and the heat pipe introducing a heat source form a heat exchanger of a refrigerating unit is connected to the working solution in the junction box; and a water tray in the cooling tower is equipped with a circular sprayer or atomizer, an electric pump is started to enable water in the water tray to be sprayed through the sprayer or atomized through the atomizer, the water in the water tray is supplied by a water supply pipe which is connected with a tap water pipe outside, and the water volume is controlled by a float valve device. The heat pipe type energy-saving central air-conditioning cooling system has the advantages of being water-saving, small in occupied building space and silent in operation.

The invention discloses a draining and moisture exhaust device for a direct-buried steam pipe. The draining and moisture exhaust device comprises a water collector connected with a working pipe. The draining and moisture exhaust device is characterized by further comprising a cooling water tank, a division plate is arranged in the middle of the cooling water tank, and the cooling water tank is divided into an upper water tank and a lower water tank by the division plate; a baffle plate is arranged under the middle of the division plate, and the lower end of the baffle plate is not connected with the bottom of the cooling water tank; a water drain pipe is arranged on the side face of the cooling water tank; the water collector is communicated with a drain pipe, the drain pipe is provided with a casing pipe, and a gap exists between the drain pipe and the casing pipe; the drain pipe is provided with a drain valve group, and the outlet of the drain pipe is communicated with the lower part of the cooling water tank; the casing pipe is communicated with a moisture exhaust pipe, and the outlet of the moisture exhaust pipe is arranged on the outer surface of the upper part of the cooling water tank; the moisture exhaust pipe is provided with a gate valve and a float ball valve, the float ball valve is connected with a float ball device, and the float ball of the float ball device is positioned under the division plate. The draining and moisture exhaust device solves the problems that the condensate water of the direct-buried pipe is drained and steamed, moisture cannot be exhausted and accumulated water flows backward.

The invention relates to the technical field of heat pump systems, and discloses a gas-liquid separator and a heat pump system. The gas-liquid separator adjusts the sectional area of a liquid return channel through a ball float valve to adjust the liquid return speed. The gas-liquid separator is used for solving the problems that a liquid return hole of an existing gas-liquid separator is easily blocked, refrigerants with higher liquid level are easy to accumulate in the gas-liquid separator, and the liquid return speed of a lubricating oil mixture cannot be adjusted. Due to the fact that the flow sectional area of return liquid is adjustable, it can be guaranteed that under various working conditions of the heat pump system, lubricating oil separated out of the gas-liquid separator can return to a compressor quickly, the refrigerants separated from the gas-liquid separator can quickly return to a refrigerating system, liquid impact does not happen to the liquid return amount, and therefore normal operation of the compressor is guaranteed.

A collapsible floating apparatus for controlling a valve includes a floating device and a collapsible lever. The collapsible lever includes a first member rotatably coupled to the valve, and a second member attached to the floating device at one end and rotatably coupled to the first member adjacent another end. The apparatus has a retracted position for shipping and storage, and operational positions. In the position, the second member, or the first and second members together, are brought adjacent to the valve. In operational positions, the first and second members act as a single lever to relay the buoyancy of the floating device drives to the valve. An adjusting member is provided for adjusting a relative position or angle between the first and second members, which in turn adjusts a water level.

here is provided a cock for a water purifier having a continuous water-dispensing auxiliary lever capable of dispensing purified water, without pulling a water-dispensing lever, by allowing the continuous water-dispensing auxiliary lever to pull a water-dispensing control link so as to dispense the purified water. The cock for a water purifier includes a cock body having an internal channel formed therein; a shaft opening and closing the cock body; a water-dispensing control link controlling the ascent and decent of the shaft; and a continuous water-dispensing auxiliary lever supported onto the cock body to push up the water-dispensing control link in order to dispense purified water. The cock for a water purifier having a continuous water-dispensing auxiliary lever may be useful to continuously dispense water without pulling or pushing the water-dispensing lever.

The invention discloses a cock valve good in airtightness and not prone to rusting. According to the technical scheme, the novel cock valve comprises a valve body; a cylindrical cock is arranged in the middle of the valve body, a cavity is formed in the upper side of the cylindrical cock, and the cylindrical cock is tightly connected with the cavity. The outer wall of the cavity is made of rubber, a valve rod connected with the cylindrical cock is arranged in the cavity, and the valve rod is sleeved with a pushing rod; the pushing rod is connected with a bonnet through threads; the valve rod is connected with a power mechanism; an oil injection nozzle is arranged on the upper portion of the cavity, a spiral groove is formed in the outer wall of the cavity, and the oil injection nozzle stretches into the spiral groove. According to the novel cock valve, the pushing rod enters the cavity to enable the cavity to expand and make tight contact with the valve body; the spiral groove formed in the outer wall of the valve body is filled with oil agents which can effectively prevent the valve body from rusting, and the service life of the cock valve is prolonged.

The invention discloses a medical full-automatic cleaning machine with a floating ball valve. The medical full-automatic cleaning machine comprises a rack (1), a cleaning cabin (2), an air pump (3), a water pump (4) and a main pipeline (5), wherein the cleaning cabin (2) is internally provided with a cleaning rack, the air pump (3) is connected with the upper end of the main pipeline (5), the water pump (4) is connected with the lower end of the main pipeline (5), the cleaning cabin and the cleaning rack are provided with multiple spray nozzles respectively, the multiple spray nozzles are communicated with the main pipeline (5) through multiple branch pipelines (6), two valve seats (7) are respectively arranged at the connecting parts between the main pipeline (5) and the air pump (3) as well as between the main pipeline (5) and the water pump (4), the main pipeline between the two valve seats (7) is internally provided with a the valve ball (9), the valve ball (9) can be respectively in tight contact with one valve seat which is arranged above or under the main pipeline under the drive of water pressure or wind force, and thus a one-way sealing ball valve can be formed. According to the medical full-automatic cleaning machine disclosed by the invention, the structure is simple, the sealing is reliable, and the double-position one-way sealing of the air pump and the water pump can be realized just by virtue of one valve ball.

The invention discloses a feeding tank for breeding and particularly relates to the field of breeding. The feeding tank comprises a feeding mechanism, a feeding box body and a bottom plate, wherein the feeding mechanism and the feeding box body both are positioned at the upper part of the bottom plate; the feeding box body is positioned at one side of the feeding mechanism; a box cover is arrangedat the upper part of the feeding box body; a trough and a water tank are arranged at the internal upper part of the feeding box body; support folding mechanisms are arranged between the trough and the water tank; and first connecting short bars are arranged at one side of an outer wall of each of the trough and the water tank. Through the arrangement of a tread mechanism, the support folding mechanisms, the first connecting short bars, second connecting short bars, a press-type faucet, limiting posts and a float valve, automatic feed addition and automatic water supply can be achieved, the manpower is greatly reduced, the labor intensity of breeders is reduced, the problem that feeds and water in the feeding tank are easily contaminated is solved, the feeding safety is ensured, the automation degree of the feeding tank is enhanced, and the practicability of the feeding tank for breeding is improved.

A drain cock for an engine oil pan that can prevent the engine oil from leaking due to the wear and tear of a screw thread on the drain cock, the drain cock includes a drain hole established on the bottom of the engine oil pan, a receptacle for exchanging engine oil attached to open and close the drain hole, an insertion for exchanging engine oil inserted in or drawn out of the receptacle in a sliding fashion, a bolt and a spring established inside the insertion, and a nut cap for opening and closing oil, connected to the bottom of the bolt, for opening and closing the drain hole.

The invention discloses a foldable humidifier. The foldable humidifier comprises a fixed seat, a foldable storage cup which is used for accommodating liquid and a humidifier assembly, the lower end ofthe foldable storage cup is sleeved and fixed on the fixed seat; the humidifier assembly comprises an upper cover, a one-way ball float valve, a water level probe, a water absorbing cotton, a drivingcircuit board, an atomizing sheet and a battery, the upper cover is fixedly arranged above the foldable storage cup, the one-way ball float valve, the water level probe, the water absorbing cotton, the driving circuit board, the atomizing sheet and the battery are all fixed on the upper cover, an air inlet of the one-way ball float valve and one end of water level probe are located in the foldable storage cup, the other end of the water level probe is connected to the driving circuit board, the driving circuit board is connected to the atomizing sheet, the other end of the water absorbing cotton is in contact with the atomizing sheet, and the battery is connected to the driving circuit board. The foldable humidifier can be folded with the water level and convenient to carry; and the waterabsorbing cotton is adopted, so that cleaning is convenient and the service life is prolonged.

The invention relates to the technical field of train carriage equipment, in particular to a train carriage hot water receiving device with a purifying structure. The device comprises a hot water tank. Two water storage cavities are formed in the portion, close to the top, inside the hot water tank. Water inlet pipes extending into the water storage cavities are plugged into the two sides of the outer wall of the top of the hot water tank respectively. A floating ball valve is in threaded connection with one end, at the corresponding water storage cavity, of each water inlet pipe. A protectivecover is installed at one side of the inner wall of the top of each water storage cavity through a bolt. An ultraviolet lamp is installed at one side of the inner wall of the top of each water storage cavity through a bolt. The ultraviolet lamps are located inside the protective covers, and an electric heating wire is installed at the inner wall of the bottom of one water storage cavity through ascrew. The train carriage hot water receiving device has the beneficial effects that the heat preservation effect of the hot water receiving device can be enhanced, the phenomenon that hot water inside the water storage cavities are cooled too fast is avoided, and electricity consumption of the hot water receiving device can be lowered. Water inside the water storage cavities can be sterilized, so that the quantity of bacteria in water can be lowered, and it is ensured that passengers can use safe water.

An efficient multifunctional energy-saving stove is used in daily life and business. The stove comprises a water jacket and an automatic water replenishing structure. The water jacket is distributed with a plurality of reflux holes, and provided with a hot water pipe, a water inlet pipe and a steam outlet; and gas barrier insulation boards are arranged around the water jacket. A floating ball valve box, a steam pipe, a water inlet pipe and a water replenishing pipe form an automatic water replenishing device. When fuel burns in the furnace center, generated heat heats water in the water jacket to generate hot water and steam, so as to increase utilization rate of heat energy and realize high efficiency. The invention solves the problems of a multifunctional energy-saving stove, such as low energy-saving rate and suitability for non-solid fuels.