63results about How to "Flow adjustable" patented technology

The utility model discloses a 3D printing nozzle with adjustable nozzle size, which comprises a connecting pipe installed on a 3D printer, the bottom end of the connecting pipe is fixedly connected with a nozzle, the connecting pipe is internally and fixedly connected with a fixing ring, the circumferential inner wall of the connecting pipe is symmetrically provided with two sliding chutes, the two sliding chutes are internally and slidably connected with a sliding plate, and the sliding plate is fixedly connected with the nozzle. A protruding block is fixedly connected to the top of the sliding plate, a connecting assembly used for pulling the sliding plate to move upwards is arranged on the circumferential outer wall of the connecting pipe, and the connecting assembly comprises a plurality of fixing bases. By reducing the hollow area of the fixing ring, the flow of materials used for 3D printing can be reduced, flow adjustment of the 3D printing spray head is achieved, the situation that the flow of the spray head is changed due to movement of the sliding plate can be prevented, the stability of flow adjustment of the 3D printing spray head is improved, flow recovery of the 3D printing spray head can be facilitated, and the service life of the 3D printing spray head is prolonged. And the convenience of adjusting the 3D printing spray head is improved.

The utility model belongs to the technical field of duckbilled sprayers, and discloses a duckbilled sprayer nozzle assembly with adjustable flow, an adjusting assembly and a driving assembly, the nozzle assembly comprises a nozzle, the nozzle is provided with a liquid inlet and a liquid spraying opening which are communicated, and the inner wall of the liquid spraying opening is provided with a sliding groove; the adjusting assembly comprises an adjusting part, and the adjusting part is slidably arranged in the sliding groove; the driving assembly is connected with the nozzle and the adjusting part and used for driving the adjusting part to slide relative to the sliding groove so as to adjust the length of the adjusting part sliding into the liquid spraying opening. The water outlet flow of the duckbilled spray head can be adjusted.

The invention provides an integrated valve block, a hydraulic braking system and an electric forklift hydraulic braking method.The hydraulic integrated valve block comprises a valve body, and an oil inlet P0, an oil return port and a detection oil port M connected with a pressure sensor are formed in the valve body; an OPS electromagnetic valve is connected between the oil inlet P0 and the pilot oil port P1, an unloading valve is connected between the oil inlet P0 and the energy storage oil port P2, a logic valve is connected between the oil inlet P0 and the cooling oil port D, and the unloading valve is connected with the logic valve through an oil way. The oil inlet end of the brake oil port P3 is connected with the energy storage oil port P2 through a two-position three-way electromagnetic valve. Control oil ways of a service brake, a parking brake, a drive axle, an OPS function and the like are integrated into the integrated valve block and are connected and controlled through oil ports respectively. The hydraulic system is easy to install, compact in structure and convenient to install and maintain, and cost is reduced.

The invention relates to the technical field of heat energy power engineering, and discloses a waste heat recovery type heat energy driving device and application thereof in power engineering.The waste heat recovery type heat energy driving device comprises a transmission shaft, a suction machine, a pressure reduction assembly and a power assembly are sequentially arranged on the transmission shaft, the input end of the suction machine is connected with a suction pipe, and an adjusting assembly is arranged on the suction pipe; the end, away from the suction machine, of the suction pipe is connected with a boiler assembly, a filtering assembly is arranged on the side face of the boiler assembly, a cleaning assembly is arranged on the boiler assembly, and a connecting pipe is connected between the cleaning assembly and the power assembly. According to the boiler, the pressure reduction assembly is arranged, after pressure reduction and cooling are conducted on water vapor generated in the boiler, the water vapor is input into the power assembly to drive the transmission shaft to rotate, and therefore external mechanical equipment is driven to operate; by arranging the adjusting assembly, the flow of water vapor input into the power assembly is adjusted, so that it is guaranteed that the rotating speed of the transmission shaft is constant.

The utility model relates to the technical field of water drinking devices, in particular to a hog house drinking water recycling device which comprises a sewage draining pit, the sewage draining pit is arranged on the ground of a water drinking position and connected with a hog house sewage draining pipeline, a porous pedal is installed above the sewage draining pit, a water drinking table is installed above the porous pedal, and a filtering pedal is fixedly installed above the water drinking table. The drinking water table is connected with a disinfection solenoid through a pipeline, the disinfection solenoid is sleeved with a high-temperature disinfection furnace, an electrical bar is arranged in the high-temperature disinfection furnace, a circulating pump is installed at the input end of the disinfection solenoid, the output end of the disinfection solenoid is connected with a cooling water tank, and a reflux pump is arranged in the cooling water tank and connected with a drinking water supply pipeline. The outflowing water flows into the drinking water table for recycling or flows into the pollution discharge pit to be discharged, so that accumulated water and humidity at the drinking water position are reduced, bacteria breeding is reduced, and the sick risk of swinery is reduced.

The utility model belongs to the field of underground self-rescue facilities, and particularly relates to a water supply rescue and compressed air self-rescue combined device. Comprising a box body with an opening in the side face, and a water supply rescue device and a compressed air self-rescue device are arranged in the box body; a water supply self-rescue unit of the water supply rescue device and a compressed air self-rescue unit of the compressed air self-rescue device are distributed in a row within the opening range of the box body; according to the water supply rescue and compressed air self-rescue combined device, a water supply rescue device and a compressed air self-rescue device which are originally independent are integrated in the same box body, and the problems that a traditional split device is dispersedly installed and inconvenient to operate, and personnel need to switch the position back and forth are thoroughly solved; the interfaces (the water supply branch pipes and the compressed air masks) of the two self-rescue units are distributed side by side in the opening range of the box body, so that a user can quickly and conveniently use the water supply and compressed air self-rescue functions simultaneously or alternately at the same position and facing the same operation surface, and the cooperative operation efficiency in an emergency is greatly improved.

The utility model relates to the technical field of ball valve seats, in particular to a ball valve seat capable of adjusting flow, which comprises a valve body, a valve handle is mounted at the top of the valve body, a valve core is mounted at the bottom of the valve handle, the valve handle extends into the valve body, a semi-arc groove is formed outside the valve handle, a rotary knob is mounted in the semi-arc groove, and the valve core is mounted in the rotary knob. A control assembly is installed at the position, corresponding to the semi-arc groove, in the valve body, the control assembly is used for adjusting the flow of water flow in the valve body, the control assembly comprises a rotating piece, a first rotating plate, a control plate, a clamping plate, a second rotating plate, a connecting disc and a main plate, and the rotating piece is installed in the valve body and located on the outer side of the valve element. Compared with an existing ball valve seat capable of adjusting the flow, the ball valve seat capable of adjusting the flow can adjust the flow through the design of the clamping plates and the through holes, and the overall practicability is greatly improved.

The utility model discloses an adjustable flushing aspirator, which belongs to the technical field of medical instruments and comprises a handle and a tube component, an anterior chamber with an opening at the front end, a first channel and a second channel are arranged in the handle, and the first channel and the second channel are communicated with an inner cavity of the anterior chamber and isolated from each other. The tube assembly comprises a suction tube arranged in an inner cavity of the anterior chamber and connected with the first channel and a flushing tube connected to the outer side of the suction tube in a sleeving mode and connected with the anterior chamber, the second channel is communicated with a radial gap between the suction tube and the flushing tube through an annular gap formed between the suction tube and the inner cavity of the anterior chamber, and the second channel is externally connected with a flushing connecting tube. The flushing connecting pipe is provided with a flow adjusting assembly used for adjusting the communication section area of the flushing connecting pipe and the second channel, and the surface of the handle is provided with a pressure adjusting hole communicated with the first channel. According to the utility model, the suction channel and the flushing channel can be separated from each other, and the flushing flow and the negative pressure can be adjusted as required.

The utility model relates to gas detection technical field, the utility model provides a kind of portable gas calibration device, can realize portable flow adjustable, gas species selectable, configuration accurate, simple operation and safe use. The utility model device can produce five kinds of standard gas in hydrogen in air, hydrogen in oxygen, hydrogen in nitrogen, oxygen in hydrogen and oxygen in nitrogen, when producing hydrogen in air, can not use standard gas cylinder, by extracting field air after pretreatment as carrier gas to carry out gas distribution;When producing other gas, only need to be equipped with a bottle of carrier gas standard gas. The utility model gas distribution principle is simple, concentration is accurate, greatly facilitates the calibration of on-site analyzer, realizes portable flow adjustable, gas species selectable, configuration accurate, simple operation.

The application relates to a storage room system and method suitable for island material storage and seawater desalination, and belongs to the island life health field. In view of the problems of food perishability and freshwater shortage on islands, the application provides a storage room system suitable for island material storage and seawater desalination, which mainly comprises a refrigeration system, a plasma system and a seawater desalination system. The application realizes refrigeration and cooling of the storage space and provides a relatively suitable working temperature for the coupled plasma generating device by extracting low-temperature seawater to cool the refrigerant and arranging the evaporation pipeline around the storage room. Fresh water is prepared by utilizing the high humidity of island air, the air is heated through the convection effect of the compressor, the filtered air is humidified to the saturated state through the spraying device, and the fresh water is prepared through condensation. The application fully adapts to local conditions, utilizes the climate advantages and unique renewable energy of the South China Sea islands, and practically solves the actual needs of life.

The invention relates to the technical field of pelochelys bibroni breeding oxygenation, in particular to oxygenation pump equipment for pelochelys bibroni breeding oxygenation, which comprises a pump body assembly, a material suction assembly is arranged on one side of the pump body assembly, the material suction assembly comprises a mixing head, first pipelines, a material suction head, a lower plate, a pressing head, a threaded rod and an upper plate, the front and rear sides of the mixing head are connected with the first pipelines, and the first pipelines are connected with the lower plate. A mixing head is arranged on the side, close to the pump body assembly, of the first pipeline, a material suction head is arranged on the side, away from the mixing head, of the first pipeline, a lower plate is arranged on the side, close to the pump body assembly, of the first pipeline, and a pressing head is arranged on the side, away from the pump body assembly, of the first pipeline. According to the device, air bubbles can be diffused in water as much as possible, oxygenation can be carried out on the whole area of the device more conveniently, the flow can be controlled, and therefore mixing of water and air is more convenient.

The utility model is suitable for the field of valve execution components, and provides a pneumatic diaphragm head dual-drive execution mechanism which comprises a balance bin internally provided with a cavity, a guide hole formed in the side wall of the cavity and a push rod moving in the direction of the guide hole. An expansion film connected with the push rod is mounted in the cavity; a manual driving structure for driving the push rod to move is arranged above the balance bin and comprises a sleeve arranged at the end of the push rod in a sleeving mode, a locking structure arranged at the connecting position of the sleeve and the push rod to achieve positioning switching of the sleeve and the push rod and a handheld driving piece installed on the rack. The handheld driving piece is connected with the end of the sleeve through a transmission assembly. During pneumatic driving, the locking structure cancels positioning, and the sleeve and the push rod can slide relatively; during handheld driving, the locking structure is locked and positioned, and the sleeve and the push rod are in a positioning state, so that switching work under the dual-driving mode of pneumatic driving and handheld driving can be realized, and the problem that valve flow regulation is urgently needed due to the fact that pneumatic driving cannot work when the air pressure supply assembly is maintained is effectively solved.

The invention relates to heat storage equipment and a movable heat storage device, and the heat storage equipment comprises a heat storage device which comprises a heat exchange pipe and a heat storage unit, and the heat exchange pipe penetrates through the heat storage unit, so that liquid flowing through the heat exchange pipe can absorb heat of the heat storage unit and then is evaporated; the steam-water rebalance separator comprises a gas inlet, a gas outlet and a liquid inlet, the gas inlet is communicated with an outlet of the heat exchange pipe through a first pipeline, and the gas outlet is communicated with a steam discharge pipe used for discharging steam treated by the steam-water rebalance separator; the liquid inlet is communicated with a second liquid supply pipe for supplying liquid to the steam-water rebalance separator; the first flow adjusting device is arranged on the first pipeline; and the pressure adjusting device is arranged on the steam discharge pipe. Therefore, through the heat storage equipment, steam with stable quality can be produced.

The utility model discloses a heat-resistant polyethylene ball valve capable of controlling flow, which belongs to the technical field of ball valves and is characterized in that a ball valve core is connected in a ball valve shell in a lifting manner, a lifting shell is mounted on the ball valve shell, a lifting connecting piece is mounted on the ball valve core, a lifting groove is formed in the lifting shell, and the lifting connecting piece is mounted on the lifting groove. A lifting groove is formed in the ball valve shell, a lifting connecting piece is arranged in the lifting groove, racks are distributed on the lifting connecting piece, a driving piece is installed in the lifting groove, a rotating rod is installed at the output end of the driving piece, a half gear is arranged on the rotating rod in a sleeving mode, and a lifting cover is connected to the joint of the lifting shell and the ball valve shell in a telescopic mode. The driving piece drives the rotating rod and the half gear to rotate, the half gear rotates to drive the lifting connecting piece to ascend and descend, the ball valve element is driven to ascend and descend in the ascending and descending process of the lifting connecting piece, the flow of the ball valve is adjusted according to the ascending and descending height of the ball valve element, and the functions of height adjustment, flow adjustment, leakage prevention and lifting connection are achieved.

The invention relates to an electromagnetic valve for an automobile braking system and a control method of the electromagnetic valve, and belongs to the technical field of automobile braking systems.The electromagnetic valve for the automobile braking system comprises a valve element assembly and a coil assembly installed outside the valve element assembly, the valve element assembly comprises a static iron core, a movable iron core and a switch element, and the static iron core is connected with a valve seat through a main valve sleeve to form a containing cavity structure; the movable iron core and the switch element move in the containing cavity structure in the axial direction, the valve seat is arranged to be an integrated valve seat, a main valve is formed between one end of the switch element and the valve seat, and an auxiliary valve is formed between the other end of the switch element and the movable iron core. The electromagnetic valve is simple in structure and easy to manufacture, the risk that the sealing base falls off is avoided, and braking response is rapid.

This invention discloses a device for reducing molten tin contamination at the tail end of a tin bath, comprising a tin bath with a molten tin pan inside. A transition chamber is located at one end of the molten tin pan, and a slag box is located at the lower end of the transition chamber. A cooling mechanism is installed inside the slag box. A buffer chamber is located at the end of the transition chamber away from the molten tin pan, and an adjustment mechanism is located at the upper end of the buffer chamber. An annealing chamber is fixedly connected to the end of the buffer chamber away from the transition chamber. This invention can reduce the degree of contamination of molten tin in the tin bath, improve glass quality, and reduce molten tin consumption. A cooling mechanism and a pressure detection device are installed at the bottom of the slag box. The opening at the connection between the transition chamber and the annealing chamber is adjustable. A buffer chamber is located at the front end of the annealing chamber, and a gas flow rate detection device is installed in the buffer chamber to monitor the flow rate and prevent excessive gas from the transition chamber from entering the annealing chamber.

The invention relates to the technical field of centrifugal pumps, and discloses a self-suction centrifugal pump flow adjusting device and method.The self-suction centrifugal pump flow adjusting device structurally comprises a support, a driving motor set, an elastic coupler, a pump body, a self-suction noise reduction cavity, a dustproof assembly and a variable flow guide noise reduction mechanism. A variable flow guide noise reduction mechanism is mounted in the cavity, when an eccentric column on the rotating disc does eccentric motion, a connecting rod in sliding fit with the eccentric column is driven to swing on the fixing frame, and the connecting rod swings left and right through the limiting effect of a top sliding block, so that a plurality of swinging blocks are driven to swing synchronously; the multiple flow guide blades can be controlled to synchronously rotate, the flow area of the pump body is changed, the flow rate is adjusted, the sound absorption lining plate is installed in the self-absorption noise reduction cavity, noise generated during gas-liquid separation in the pump body can be absorbed through the formed sound absorption holes and the sound absorption cotton layer, and the noise reduction effect is achieved.

The invention discloses a particulate matter cutter efficiency calibration device which comprises a rack, a mounting cavity is formed in the rack, an air inlet pipe is arranged at the upper end of the mounting cavity, an aerosol atomizer is arranged at the upper end of the air inlet pipe, and a dilution gas circuit and a drying device are further connected between the air inlet pipe and the aerosol atomizer. The lower end of the air inlet pipe is connected with an air path shunting joint, a particulate matter cutter and a calibrated total dust concentration detection instrument are fixed in the mounting cavity, at least two shunting pipe joints are arranged on the air path shunting joint, one shunting pipe joint is communicated with an air inlet of the total dust concentration detection instrument, and the other shunting pipe joint is communicated with an air inlet of the particulate matter cutter; an air outlet of the particulate matter cutter is connected with an air outlet pipe, the air outlet pipe is communicated with the vacuumizing power device, the air outlet pipe is further provided with a sampling port, a sampling pipe is arranged in the sampling port, the sampling pipe is connected with a standard particulate matter concentration detection instrument, and the device can quickly and accurately calibrate the cutter.

The invention provides an integrated serial SCR (Selective Catalytic Reduction) denitration system, which belongs to the technical field of waste gas treatment and comprises a denitration assembly, an ammonia supply assembly, a chimney and a booster fan, the denitration assembly comprises a tower body, and a first-stage grid, a first-stage reactor, a second-stage grid and a second-stage reactor which are arranged in the tower body and are sequentially arranged from bottom to top; the ammonia supply assembly comprises an ammonia water tank and two ammonia water evaporators, the two ammonia water evaporators are both communicated with the ammonia water tank, the ammonia water evaporators are used for adjusting the discharge amount of ammonia gas, each ammonia water evaporator is provided with an ammonia supply pipeline, one of the ammonia supply pipelines extends into the tower body and is located below the first-stage grid, and the other ammonia supply pipeline extends into the tower body and is located below the second-stage grid. The other ammonia supply pipeline extends into the tower body and is positioned between the primary reactor and the secondary grating; the chimney is communicated with the smoke outlet; and the booster fan is arranged between the chimney and the smoke outlet.

The utility model discloses a flushing device of a multistage ore pulp pump, which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a water tank, the top of the water tank is fixedly connected with a water inlet, the upper surface of the bottom plate is fixedly connected with a water pump, the output end of the water pump is fixedly connected with a water pipe, and the water pipe is fixedly connected with the side face of an adjusting pipe. A pulling plate is arranged on the containing box, the bottom face of the pulling plate is hinged to one end of a hinge plate, the other end of the hinge plate is hinged to a protection plate, and the side face of the pulling plate is fixedly connected with a clamping plate. Through the placement box, a tension spring, a pull plate, a hinge plate, a protection plate, a clamping groove and an annular groove, the situations that an adjusting pipe falls off and a spray head is blocked by external dust are avoided, the service life is prolonged, through the adjusting pipe, a water outlet hole, an adjusting plate, a worm gear and a worm, an operator can adjust the flushing flow according to the actual situation, and the practicability is high. And the applicability of the whole device is enhanced.

The invention discloses a range hood which comprises an exhaust fume collecting hood and a fan system, the fan system further comprises an upper air inlet, a lower air inlet, an exhaust fume collecting hood, an exhaust fume collecting hood and an exhaust fume collecting hood, and the upper air inlet is formed in a shell of the fan system, penetrates through the shell of the fan system and is communicated with the air inlet end of a fan of the fan system; the flow guide cover is arranged in the upper air inlet in a penetrating manner, an outlet of the flow guide cover corresponds to a fan air inlet end of the fan system, the flow guide cover extends in the height direction of the range hood, and an inlet of the flow guide cover extends outwards from a shell of the fan system; the driving part is arranged on the shell and used for driving the flow guide cover to do reciprocating motion in the height direction of the extractor hood, the calculation formula of the ratio coefficient of the flow of the upper air inlet to the total flow of the extractor hood is shown in the specification, delta is the ratio of the flow of the upper air inlet to the total flow of the extractor hood, and delta is the ratio of the flow of the upper air inlet to the total flow of the extractor hood. S is the stroke of the inlet of the flow guide cover in the height direction of the range hood.

The present invention provides a hybrid cooling motor, power assembly, and power equipment. A hybrid cooling motor includes: a casing, in which a hybrid cooling pipeline is arranged, and the hybrid cooling pipeline includes: a cooling water circuit, which is connected to an external water cooling device; a cooling oil circuit, which is at least partially nested inside the cooling water circuit, and has an oil inlet and an oil outlet connected to an oil pump, and the cooling oil in the cooling oil circuit enters and cools the inside of the motor through the oil outlet. The present invention nests part of the cooling oil circuit into the cooling water circuit, and the water in the cooling water circuit can achieve heat exchange under the action of an external refrigeration device to maintain the temperature required for cooling the motor. The outer peripheral wall in the cooling water circuit contacts the casing to achieve cooling of the casing, and the inner peripheral wall contacts the cooling oil circuit to achieve cooling of the medium oil in the oil circuit, thereby completing the heat exchange process of the cooling oil circuit, and no separate heat exchange module is required to be arranged outside the casing, which simplifies the motor structure and facilitates the installation of the motor.

The utility model discloses a stirring and mixing device for cleaning agent production, which comprises a mixing box, the right side of the mixing box is fixedly provided with a second motor, the left side of the second motor is fixedly connected with stirring blades, and the periphery of the top of the mixing box is fixedly connected with supporting columns. According to the screening device, the rotating rod is conveniently driven to rotate through the first motor, so that the rotating rod drives the rotating disc to rotate, the rotating disc rotates to drive the beating block to beat the bottom of the vibrating screen plate, meanwhile, the vibrating screen plate can be in a vibrating state through elastic cooperation of the spring column, and therefore raw materials are screened; impurity particles in raw materials are effectively removed, the quality of the powder raw materials is ensured, so that the production efficiency is improved, the trouble of workers is solved, stirring blades are conveniently driven to rotate through a second motor, the raw materials and water flow are conveniently fused through rotation of the stirring blades, and the fusion efficiency of the raw materials and the water flow is improved.

The utility model discloses a drainage nursing device for spine surgery, and particularly relates to the technical field of spine surgery, which comprises a drainage bottle, a connecting pipe is arranged in the drainage bottle, an exhaust pipe is arranged at the top of the drainage bottle, a drainage pipe is arranged at the top of the connecting pipe, and an adjusting component is arranged on the periphery of the drainage pipe. Alarm assemblies are arranged in the drainage bottle and on the top of the drainage bottle. The flow of the drainage tube can be adjusted, so that the device can be suitable for drainage work under different conditions, and medical staff can be reminded when the drainage bottle is full of liquid, so that the medical staff can replace the drainage bottle in time.

The utility model relates to the technical field of asphalt mixture stirring equipment, in particular to a flow-adjustable asphalt self-flowing spraying device. Comprising a buffer tank, an asphalt self-flowing pipe, a heating and heat preservation device and an asphalt spraying pipe, the buffer tank is connected with the asphalt self-flowing pipe, the heating and heat preservation device wraps the asphalt self-flowing pipe, the asphalt self-flowing pipe is connected with the asphalt spraying pipe through a bolt pair, and a screw, a nut and a conical head are arranged on the asphalt spraying pipe; the asphalt self-flowing pipe plays a role in guiding flow, the heating and heat preservation device is wrapped outside the asphalt self-flowing pipe in a surrounding mode, asphalt in the asphalt self-flowing pipe enters the asphalt spraying pipe, the asphalt spraying pipe is connected with the asphalt self-flowing pipe through a bolt pair, and a screw, a nut and a conical head are installed on the asphalt spraying pipe to adjust the asphalt spraying flow. According to the flow-adjustable asphalt self-flowing spraying device designed by the utility model, a spraying material curtain can be formed when asphalt is discharged in a self-flowing manner; the discharge flow of each discharge hole is adjustable; and the uniformity of the asphalt mixture is improved.

The invention relates to a microbial agent storage tank, and belongs to the technical field of microbial agent production. Comprising an upper-layer tank body and a lower-layer tank body which are arranged in a high-low fall mode, the upper-layer tank body and the lower-layer tank body are fixedly installed on a tank body support at the same time, and a left-side inter-tank-body circulation mechanism and a right-side inter-tank-body circulation mechanism which are symmetrically distributed are installed between the upper-layer tank body and the lower-layer tank body. And the circulation mechanism between the left side tank bodies comprises a first circulation main pipeline, the bottom end of the first circulation main pipeline extends to the inner bottom of the left end of the lower layer tank body, and a left side circulation pump is installed on the first circulation main pipeline. By additionally arranging the circulating mechanism between the left tank body and the circulating mechanism between the right tank body, the effect that liquid microbial agents in the two groups of tank bodies can circularly flow up and down is achieved, the mixing sufficiency of materials is improved, and the situation that due to gravity or temperature, the materials are precipitated, and the concentration of the materials is not uniform is avoided.

The application relates to a liquid cooling system and a hydrogen production rectifier, and the liquid cooling system comprises a cooling device, a water inlet pipeline, a water outlet pipeline and a connecting pipeline. The water inlet pipeline comprises a water inlet main pipeline and at least one water inlet branch pipeline, and the flow rate of each water inlet branch pipeline can be adjusted. The water outlet pipeline comprises a water outlet main pipeline and at least one water outlet branch pipeline, and the flow rate of each water outlet branch pipeline can be adjusted. The connecting pipeline is connected between the water inlet main pipeline and the water outlet main pipeline, and the connecting pipeline can be switched between a conducting state and a disconnected state. When a certain water inlet branch pipeline or water outlet branch pipeline needs to be overhauled, the flow rate of the water inlet branch pipeline or water outlet branch pipeline to be overhauled can be adjusted to zero. When sewage needs to be discharged, the sewage in the water inlet main pipeline is directly discharged from the water outlet main pipeline through the connecting pipeline, so that the problem that the sewage in the water inlet pipeline cannot be completely discharged is effectively avoided.

The invention discloses a glass wafer grinding device and process, and relates to the field of glass wafer grinding, the glass wafer grinding device comprises a machine body, a bearing plate is rotationally arranged on the machine body, a containing groove used for containing a jig disc is formed in the bearing plate, a mounting plate is further arranged on the machine body in a lifting mode, a first motor is arranged in the mounting plate, and a second motor is arranged in the mounting plate. A sleeve is coaxially fixed to an output shaft of the first motor, a rotating rod is arranged in the sleeve in a sleeved mode, inserting blocks are arranged on the peripheral side of the rotating rod, inserting grooves are formed in the sleeve, the inserting blocks are matched with the inserting grooves in an inserting mode, adjusting springs are arranged in the sleeve, and the adjusting springs are located on the upper side of the rotating rod. And one end of the adjusting spring is connected with the rotating rod, the other end of the adjusting spring is connected with the inner wall of the sleeve, and a grinding wheel is coaxially fixed to the lower end of the rotating rod. The grinding equipment is higher in applicability, and the grinding efficiency can be improved.

The utility model relates to the technical field of flow guide pipes, in particular to a flow guide pipe device convenient to control flow, which comprises a pipe body, the pipe body comprises a flow guide pipe body, and a connecting pipe is arranged on the surface of the flow guide pipe body. An adjusting mechanism is arranged on the surface of the flow guide pipe body, the adjusting mechanism comprises a fixing block, the fixing block is fixedly connected to the surface of the flow guide pipe body, and a through groove is formed in the inner side of the fixing block. Through rotation of the screw rod, the screw rod can enable the extrusion block to drive the rubber pad to move, the extrusion block and the rubber pad can extrude the flow guide pipe body, the flow speed of fluid can be limited in the extrusion process, then the effect of adjusting the flow of the fluid can be achieved, flow guide is more flexible, and the flow guide efficiency is improved. The situation that the flow is too large due to the fact that fluid enters too fast can be avoided, the accuracy and safety of flow guiding can be improved, and flow guiding is more flexible.

The invention provides a system for measuring a two-phase boiling structure under an obliquely downward heating flow boiling condition, and relates to the technical field of nuclear safety experiment equipment, and the system comprises a cooling water flow channel which is communicated with a cooling water circulation system; the cooling water runner is provided with a measuring area, and the heater is fixedly arranged on the outer surface of the cooling water runner and corresponds to the heating surface; the probe mechanism is fixedly arranged on the outer surface of the cooling water flow channel, a probe can move in the direction close to or away from the heating surface, and the probe can be inserted into the measuring area to obtain the void fraction. The heater simulates the temperature of the molten pool and heats the outer surface of the cooling water runner so as to form a heating surface in the cooling water runner, the heating surface is used for simulating the outer wall surface of the lower sealing head, when cooling water flows along the cooling water runner, heat of the heating surface can be taken away, and scene simulation that the cooling water cools the outer wall surface of the lower sealing head is achieved. The probe is inserted into the cooling water flow channel, the void fraction of different section depths is obtained, and then the liquid film thickness is indirectly obtained.