686 results about "Water jacket" patented technology

The utility model relates to a triple-cycle high-salinity wastewater low-temperature scraper drying system which comprises a roller scraper dryer, a steam condensation chamber, a condensed water tank and a vacuum pump, the vacuum pump vacuumizes the drying cavity through the condensate water tank and the steam condensation chamber. The first heat exchange cycle is suitable for exchanging heat absorbed by the steam condensation chamber to the third heat exchange cycle; the second heat exchange cycle is suitable for exchanging heat of the third heat exchange cycle to the water jacket; and the heat exchange ends on the two sides of the third heat exchange cycle are connected with the first heat exchange cycle and the second heat exchange cycle correspondingly. The three heat exchange cycles work cooperatively, the heat of the first heat exchange cycle is reduced, the heat provided for the second heat exchange cycle by the third heat exchange cycle is reduced, and the hot water in the second heat exchange cycle can still heat the materials in the drying cavity by exceeding the boiling point rise through the auxiliary heat, so that the low water content of the dry materials is effectively ensured.

The invention discloses a water jacket insert for die casting of an integrated conformal cooling runner, relates to the technical field of metal casting, and aims to solve the technical problem that an existing water jacket insert cannot achieve differential cooling. The water jacket insert comprises an insert body, the conformal cooling runner is formed in the insert body, and a plurality of flow control mechanisms are arranged in the runner; and each group comprises at least two flow control assemblies. The flow control assembly is movably arranged on the limiting assembly and provided with magnetic matching blocks, and the magnetic pole orientations of the magnetic matching blocks in the same set are different. A driving mechanism is arranged on the mold and is used for driving the magnetic control mechanism to generate a direction-controllable external magnetic field. And the external magnetic field acts on the magnetic matching block to drive the flow control assemblies in the same group to generate opposite deflection motion, so that the flowing state of fluid in the flow channel is changed, the insert has at least two different cooling working modes, and active switching between strong cooling and rapid cooling is achieved. The problem that a traditional conformal cooling flow channel cannot be dynamically adjusted is solved, and the flexibility, uniformity and reliability of die-casting cooling are remarkably improved.

An electric propulsion device includes a propeller, a motor rotating the propeller, an inverter controlling driving of the motor, and a cooling device cooling the motor and the inverter. The cooling device includes an intake port taking water around the electric propulsion device into the electric propulsion device as cooling water, a drain port discharging the cooling water taken into the electric propulsion device to around the electric propulsion device, a pump flowing the cooling water from the intake port to the drain port in the electric propulsion device, a motor water jacket cooling the motor with cooling water taken into the electric propulsion device, and an inverter water jacket cooling the inverter with cooling water taken into the electric propulsion device. The motor water jacket and the inverter water jacket are connected in series between the intake port and the drain port in the electric propulsion device.

The utility model discloses a device for preparing a quartz crucible, which comprises a die and a water jacket arranged outside the die, the upper parts of the die and the water jacket are open, a first cavity is formed between the bottom of the die and the bottom of the water jacket, a second cavity is formed between the side wall of the die and the side wall of the water jacket, and the first cavity is communicated with the second cavity. The first cavity and the second cavity are communicated with each other, the bottom of the water jacket is provided with an extraction opening which is communicated with the first cavity and the external space of the water jacket, the extraction opening is communicated with external evacuation equipment, an extraction assembly is arranged between the mold and the water jacket, and the extraction assembly is communicated with the mold. The air exhaust assembly comprises a plurality of air inlets, an air outlet and an airflow channel enabling the air inlets to communicate with the air outlet, the air inlets are formed in the second cavity, and the air outlet communicates with the air exhaust opening. The quality of a bubble depletion layer formed on the inner wall of the quartz crucible is improved.

An electromagnetic valve with an improved waterproof sleeve structure comprises a stator assembly, a waterproof sleeve fixed on the stator assembly and a valve cover arranged on the waterproof sleeve in a covering mode, the waterproof sleeve comprises a columnar sleeve part, and a hollow cavity for containing a movable iron core and a spring is formed in the center of the sleeve part. The valve is characterized in that the end face, axially facing one side of the valve cover, of the sleeve part is concave downwards to form a plurality of concave parts which are distributed in the circumferential direction and are communicated with the cavity of the sleeve part. According to the electromagnetic valve with the improved waterproof sleeve structure, the downward concave part communicated with the cavity is formed in the end face of the side, facing the end cover in the axial direction, of the sleeve part, the gap between the top end of the sleeve part and part of the radial direction of the movable iron core is enlarged, and the situation that bacteria breed at the top end of the sleeve part and adhere to the movable iron core is reduced; and when water is supplied for the first time after the electromagnetic valve leaves a factory or the electromagnetic valve is started in a standby mode for a long time, water can quickly enter the electromagnetic valve from the downward concave part and flush away bacteria bonded between the sleeve part and the movable iron core, the electromagnetic valve is quick in starting response, and the working stability is improved.

An incineration system rotary kiln water jacket anti-corrosion device relates to the technical field of chemical equipment and comprises a water jacket body, an epoxy resin coating is arranged outside the water jacket body, a vinyl resin coating is arranged outside the epoxy resin coating, an anti-corrosion reinforcing layer is arranged outside the vinyl resin coating, and a protective steel shell is sleeved outside the anti-corrosion reinforcing layer. The anti-corrosion reinforcing layer comprises an inner steel pipe, an outer turning cover, longitudinal steel bars, arc-shaped steel bars and supporting bars. The corrosion resistance of the water jacket body is improved through the epoxy resin coating and the vinyl resin coating adopted by the incineration system rotary kiln water jacket corrosion prevention equipment; and by adopting the anti-corrosion reinforcing layer, the anti-corrosion property of the water jacket is improved, the mechanical strength of the water jacket is improved, the service life of the water jacket is prolonged, and the cost of production equipment is reduced.

The invention relates to the technical field of high-pressure gas cylinder detection. The high-pressure gas cylinder residual deformation rate detection device comprises a mounting seat, a water tank is arranged on the mounting seat, a liquid level measuring water jacket is arranged on one side of the water tank in a communicating mode, a water injection pipe is arranged on the other side of the water tank, a supporting seat is arranged on the water tank, a supporting rod is arranged on the supporting seat, and a pressure sensor is arranged on the supporting rod. A limiting assembly and an adjusting assembly are arranged on the supporting rod, a fixing assembly is arranged on the supporting seat, a lifting seat is arranged on the mounting seat, a discharging plate is arranged on one side of the lifting seat, a lifting assembly is arranged on the lifting seat, and a liquid level detecting assembly is arranged on the liquid level measuring water jacket. The gas cylinder detection device has the advantages that the gas cylinder to be detected can be conveniently placed in the water tank, the labor intensity of workers is reduced, the working efficiency is improved, compared with a traditional detection method, equipment needed during measurement and the measurement process are simplified, and the detection efficiency and the accuracy of a measurement result are improved.

This invention discloses a cylinder head compatible with multiple fuels, including a first mounting hole and a second mounting hole. The first mounting hole is located on the cylinder head and penetrates both the upper and lower surfaces of the cylinder head. The second mounting hole is also located on the cylinder head and penetrates both the upper and lower surfaces of the cylinder head. The first mounting hole can be used to mount a micro-injector, and the second mounting hole can be used to mount a main injector. The micro-injector and the main injector inject different fuels. Through a special valve arrangement and structural design, the cylinder head integrates the main injector mounting hole, the micro-injector mounting hole, and the air start valve mounting hole. The air start valve mounting hole can also be changed to an injector mounting hole, thereby enabling switching between multiple fuel modes and making it suitable for modular and serialized development of engines on the same platform. The bottom of the cylinder head features a fully enclosed annular water jacket design, solving the problems of thermal fatigue and poor reliability inherent in traditional cylinder heads.

The application discloses a deep-water jacket monitoring sensor virtual mapping method based on deep learning and belongs to the field of ocean fixed platform structure health monitoring. The method utilizes the correlation relationship among various sensors in the platform, constructs a mapping relationship database between in-situ sensors and missing sensors, and establishes a platform failure sensor virtual mapping method based on a Multi-LSTM algorithm. When abnormal behaviors occur in the arranged sensors of the platform, the in-situ sensors can accurately map and restore the failure sensors, the restoration accuracy reaches 99%, the virtual replacement of the failure sensors is realized, and the method can be widely applied to the field of ocean fixed platform structure health monitoring.

The utility model relates to the technical field of motor water jackets, and discloses a motor water jacket structure with good heat dissipation performance, which comprises an axial pipe, a water inlet is arranged on the outer wall of the axial pipe, a connecting mechanism is arranged on the axial pipe, a connecting pipe is arranged on the outer wall of the axial pipe, a threaded opening is arranged on the connecting pipe, and a water outlet is arranged on the threaded opening. A threaded opening is formed in the axial pipe, a hose is connected to the threaded opening, a heat dissipation copper sheet is installed on the hose, a heat dissipation patch is installed at the bottom of the axial pipe, the connecting mechanism is arranged on the axial pipe, the connecting pipe is arranged on the axial pipe, and the threaded opening is formed in the connecting pipe, so that different hoses can be replaced according to different motor specifications; the flexible pipe is provided with the heat dissipation copper sheet, and the bottom of the axial pipe is provided with the heat dissipation patch, so that the fitness and the heat dissipation effect of the motor are integrally enhanced, and the top end of the axial pipe is provided with the connection port, so that the axial pipe can be conveniently expanded for connection.

Combined cooling of electric machines are disclosed, for example, motors or generators, directly and by means of a water jacket. Particularly, it is provided an electric machine (100), comprising a housing (110), a water jacket (120) integrated in the housing (110) and a stator (130) accommodated in the housing (110) and comprising stator end windings (133) at a first axial end and a second axial end of the stator (130) and a plurality of channels (135) extending entirely through the stator (130) between the first axial end and the second axial end of the stator (130), wherein the plurality of channels (135) is configured and arranged for guiding a coolant towards the stator end windings (133). The water jacket (120) comprises an inlet (122) and an outlet (124) and a helical channel (128) connecting the inlet (122) with the outlet (124) and having a diameter larger than the diameter of the inlet (122) and the diameter of the outlet (124).

The invention discloses a low-pressure sand mold casting structure and casting method for a new energy automobile motor shell, the low-pressure sand mold casting structure for the new energy automobile motor shell comprises a sand core assembly and a chilling structure, the sand core assembly defines a cavity used for forming a motor shell casting, and the sand core assembly comprises a side sand core, a bottom sand core and a top sand core, the side sand core is configured to be used for forming the lateral outer wall of the motor shell casting; the main body sand core is at least partially arranged on the inner side of the side sand core and is configured to be used for forming the inner wall of the motor shell casting; the water jacket sand core is arranged between the side sand core and the main body sand core and is configured as a cooling water channel for forming a motor shell casting; wherein the chilling structure is arranged on the main body sand core and is configured to be in contact with molten metal in the pouring process so as to accelerate solidification of the molten metal at the chilling structure. The method has the advantage of being low in rejection rate.

The invention discloses a method for transforming a reaction tower top of a flash furnace, which is characterized in that the tower top is upgraded from a refractory brick to a full water cooling structure by systematically dismantling an old structure, accurately installing an annular water jacket and sequentially hanging flat water jackets. The method optimizes a cooling system, improves heat dissipation efficiency, enhances thermal shock resistance and slag adhering stability, significantly prolongs the service life of the tower top, and reduces the risk of brick falling at high temperature; the installation precision and the structural rigidity are synchronously improved, the operation safety and the production continuity of the flash furnace are effectively improved, the overhaul frequency and the maintenance cost are reduced, the method is suitable for technical transformation under the high-load smelting working condition, and efficient and stable operation of a smelting system is guaranteed.

This invention relates to the field of water jacket sand core technology, and in particular to a structure and method for increasing venting in water jacket sand cores. Addressing the problems of slow venting speed and inconvenience in existing water jacket sand core venting structures, the present invention proposes the following solution: It includes a water jacket core and a venting mechanism. The water jacket core has multiple venting channels, and a large-sized auxiliary core head is fixed to the outlet of each venting channel. Each of the auxiliary core heads is equipped with a detachable external mold venting pin. The venting mechanism includes a fixed pipe, multiple connecting pipes, and multiple branch pipes fixed to the fixed pipe. This invention adds a large-sized auxiliary core head to the existing small core head structure, simultaneously creating venting channels for the sand outlet and thick structures. Combined with the external mold venting pins on the external mold, a "gas path" communicating with the outside is formed, allowing the large amount of gas generated by the water jacket sand core to be quickly discharged. At the same time, the venting mechanism greatly facilitates the assembly and disassembly of the external mold venting pins.

The invention relates to the technical field of brass rod continuous casting, in particular to a brass rod machining continuous casting device and a working method thereof. Comprising a supporting seat, and a mounting seat is arranged at the top of the supporting seat; and a crystallization mechanism is arranged on one side wall of the mounting seat. The outer wall of the cooling copper pipe is rotationally sleeved with the inner water jacket, and a narrow gap is formed between the inner wall of the inner water jacket and the outer wall of the cooling copper pipe, so that cooling water can accelerate flowing when passing through the narrow gap, meanwhile, after long-time continuous casting work, the guide ring is controlled to drive the outer water jacket to rotationally abut against one ends of the multiple sets of connecting rods, and the cooling water is cooled. The magnetic suction scraper at the other end of the connecting rod rotates to abut against the outer wall of the cooling copper pipe, salt impurities attached to the outer wall of the cooling copper pipe are cleaned, the heat conduction effect of the cooling copper pipe is guaranteed, shutdown cleaning is not needed, cooling water is always kept in a circular flowing state, and the cooling efficiency is improved. Therefore, the working effect of the continuous casting device is improved while the continuous casting working continuity is ensured.

The utility model discloses a full water jacket pure oxygen continuous gasification furnace, which relates to the technical field of gasification furnaces and comprises a gasification furnace main body, the top of the gasification furnace main body is provided with an automatic stoker, a hydraulic coke detector, a radar coke detector and a gas outlet pipe, and the side end face of the gasification furnace main body is provided with an upper water jacket and a lower water jacket. A fire grate is arranged at the bottom of the inner end face of the gasification furnace body, a central air bellow, an ash discharging assembly and a fire bar machine assembly are arranged at the bottom of the gasification furnace body, a feeding hopper is arranged at the top of the automatic stoker, a discharging opening is formed in the bottom of the automatic stoker, and a secondary distributor is arranged in the discharging opening. The gasification furnace has the advantages of high efficiency, stability, environmental protection and energy conservation, and solves the problems of'blow-over 'and'cavity' phenomena caused by unreasonable height-diameter ratio design of a traditional gasification furnace and carbon layer height fluctuation caused by a single ash discharge port.

Disclosed in the present invention are a washing machine and a control method therefor. The washing machine comprises an outer tub, wherein a water passage opening is provided in the bottom wall of the outer tub; an inner tub, which is arranged in the outer tub and can contain water independently, wherein a water flow opening and a valve component used for opening and closing the water flow opening are provided on the bottom wall of the inner tub; and a water sealing sleeve, which is arranged between the bottom wall of the inner tub and the bottom wall of the outer tub, is sleeved on the outer side of a shaft of the inner tub, and is internally provided with a hollow vertically penetrating channel, wherein the bottom end of the water sealing sleeve is in sealed connection with the bottom wall of the outer tub; the water passage opening is in communication with the hollow channel; the top end of the water sealing sleeve can move up and down to abut against and be separated from the valve component, so as to open and close the water passage opening; and when the top end of the water sealing sleeve moves upwards to abut against the valve component, the water sealing sleeve forms sealing with the part of the bottom wall of the inner tub around the periphery of the water flow opening, and the water flow opening is in communication with the water passage opening by means of the hollow channel. In the washing machine of the present invention, a water intake flow of the washing machine and a drainage water flow of the inner tub enter and exit from the inner tub by means of only the hollow channel in the water sealing sleeve, and do not enter a space between the inner tub and the outer tub, thereby ensuring cleanliness and sterility between the tubs.

The utility model discloses a motor cooling unit and a generator for a gas turbine. The motor cooling unit comprises a stator cooling unit and a rotor cooling unit. The stator cooling unit comprises a spiral water tank arranged on the outer ring of the casing and a water jacket sleeved on the outer ring of the casing, and a spiral water-cooling closed cavity is formed between the casing and the water jacket; the rotor cooling unit comprises n axial oil ducts arranged in the rotor and oblique oil ducts corresponding to the axial oil ducts, the n axial oil ducts are parallel to the axis direction of the rotor and are arranged in the rotor by taking the axis of the rotor as a central symmetry line, and the axial oil ducts and the rotor hollow shaft hole are communicated through the oblique oil ducts; and a rear cover plate of the motor is provided with an oil outlet and an oil inlet. According to the utility model, a stator unit spiral water channel cooling mode and a rotor unit Z-shaped oil channel are adopted, so that the cooling efficiency of the generator is improved, and the temperature rise of the generator is controlled within a specified range.

Device for cooling a vehicle engine, comprising: a combustion chamber in which a piston moves back and forth; Water jackets (16a, 16b) through which a coolant flows to cool the combustion chamber; and a cylinder block (1) which forms a frame of the vehicle engine, wherein the cylinder block (1) comprises: a cylinder block body (10) in which the combustion chamber is formed, and an exhaust gas recirculation (EGR) cooler (30) which is mounted in the cylinder block body (10) in such a way that the EGR cooler (30) exchanges heat with a coolant discharged from the combustion chamber, wherein the cylinder block body (10) is provided with an EGR cooler insertion section (20) to which a coolant from the combustion chamber is supplied and in which the EGR cooler (30) is inserted, wherein the EGR cooler (30) is provided with a gas pipe (36) in which an exhaust gas flows, wherein the exhaust gas of the gas pipe (36) is cooled by a coolant which is supplied to the EGR cooler insertion section (20), wherein a supply opening (12) is configured to supply a coolant to the EGR cooler insertion section (20) in which cylinder block body (10) is formed, wherein the cylinder block body (10) has a plurality of cylinder chambers (18), wherein the water jackets (16a, 16b) have a circulation flow channel (16b) configured to exchange heat with all cylinder chambers (18) and a direct flow channel (16a) configured to exchange heat with one of the cylinder chambers (18), wherein the feed opening (12) is formed at a point where the circulation flow channel (16b) and the direct flow channel (16a) meet, wherein the water jackets (16a, 16b) have an arc shape which encloses the outer circumferences of the cylindrical chambers (18), and wherein the EGR cooler insertion section (20) is designed such that it extends horizontally in the longitudinal direction of the cylinder block body (10).

The utility model discloses a cooling water jacket structure and a pot-type calcining furnace. The cooling water jacket structure comprises a water inlet ring pipe and a water outlet ring pipe, the water outlet ring pipe is arranged above the water inlet ring pipe; the multiple outer through pipes arranged in a surrounding mode form a material channel, the outer through pipes and the inner through pipes communicate with the water inlet ring pipe and the water outlet ring pipe, and the inner through pipes are arranged in the material channel; the inner side wall of the inner through pipe is provided with a first reinforcing structure protruding out of the surface. The water outlet connector is installed on the water outlet ring pipe and comprises an eccentric reducing pipe, the eccentric reducing pipe comprises a large-diameter section and a small-diameter section, the large-diameter section is connected with the water outlet ring pipe, and the central axis of the small-diameter section is located above the central axis of the large-diameter section; the two flange structures are mounted at the two ends of the material channel respectively; the flange structure is provided with an expansion gap penetrating through the flange structure in the radial direction of the material channel, and a baffle is installed in the middle of the expansion gap. According to the cooling water jacket structure, the heat conduction efficiency can be improved, and therefore the gas production rate is increased; the safety is high, and the service life is long.

The invention discloses a cooling and sealing integrated structure of an electric spindle, which belongs to the technical field of numerical control machine tool spindles and comprises a front support sleeve, a rear support sleeve, a rear support seat, a water jacket, a front gland, a power mechanism and a cooling and sealing mechanism. The cooling sealing mechanism comprises a cooling structure, an annular spraying structure and an air curtain structure, the cooling structure is arranged among the front supporting sleeve, the rear supporting sleeve, the rear supporting seat and the water jacket, the annular spraying structure is arranged among the front supporting sleeve, the rear supporting sleeve, the rear supporting seat, the water jacket and the front gland, and the air curtain structure is arranged among the front supporting sleeve, the rear supporting sleeve, the rear supporting seat, the water jacket and the front gland. According to the cooling and sealing integrated structure of the electric spindle, the problems that in a traditional discrete structure, pipelines are exposed, and layout is disordered can be solved, functional complementation is achieved during cooperative operation of all systems, and efficient linkage of cooling, circular spraying and air curtain functions is guaranteed while the overall structure is simplified.

The application discloses a hot water boiler based on a porous medium burner, which comprises a hot water boiler shell, wherein the hot water boiler shell comprises a boiler barrel, the outer side of the boiler barrel is provided with a water jacket for storing water, and the inside of the boiler barrel is fixedly provided with a porous medium burner; the inner cavity of the porous medium burner comprises a combustion reaction zone, the two ends of the combustion reaction zone are provided with anti-backfire areas, the two ends of the porous medium burner are provided with mixed gas inlets, the mixed gas inlets are connected with mixed gas input pipelines, one end of the mixed gas input pipelines extends out of the hot water boiler shell and is connected with a gas fuel supply device; the porous medium burner is internally provided with an ignition device, mixed gas flows into the combustion reaction zone from the mixed gas input pipelines and is ignited by the ignition device, heat generated by combustion of the mixed gas heats water in the water jacket, flue gas is discharged from the combustion reaction zone through the pores of the porous medium of the porous medium burner and is discharged into a flue gas treatment mechanism connected with the hot water boiler shell, the gas utilization rate is improved, and the heat diffusion speed is slowed down.

The invention relates to the technical field of compressors, in particular to a lead screw linear compressor which comprises a lead screw motor, a motor shell, a piston rod, a connecting barrel, a cooling fan, an air path pipe, an air cylinder body, a water jacket and a cylinder cover. The piston rod is directly connected with the lead screw motor, linear motion output by the lead screw motor is used for pushing the piston rod to move in a reciprocating mode to compress gas, and the piston head in the air cylinder body is used for constructing the first-stage compression chamber and the second-stage compression chamber. Gas paths are arranged in the cylinder cover and the base of the cylinder body around the first-stage compression chamber and the second-stage compression chamber and are communicated with a first-stage exhaust valve and a second-stage air inlet valve, so that second-stage gas compression under the bidirectional action of the piston rod is realized; on the basis that the mechanical structure of the piston compressor is simplified, the mechanical efficiency is improved, maintenance is convenient, meanwhile, the two-way piston rod can achieve two-stage gas compression in the one-time reciprocating process, friction loss is reduced, and stable and safe operation of the piston compressor can be guaranteed.

This utility model relates to the field of urea injectors, specifically disclosing a liquid inlet cap sealing structure for a urea injection assembly, including: a water jacket assembly, a valve body, a liquid inlet cap, and a sealing part. The valve body is composed of a wiring part, a coil part, and a liquid inlet pipe. The sealing part can be either a sealant with an integral filling structure or a component consisting of a first sealing ring and a second sealing ring for sealing. After sealing, it can prevent cooling water or external immersion water from seeping into the gaps between the wiring part and the liquid inlet pipe, as well as the gaps between the wiring part and the coil part, thus preventing water from entering and damaging the coil part and wiring part, thereby extending the service life of the valve body and reducing the failure rate.

The invention provides a furnace building method for building a furnace through double melting channels. The problems that in the prior art, positioning is not accurate, fixing is not firm, grooving is not precise, and procedures are scattered are solved. The method comprises the following steps of: filling a base layer at the bottom of a furnace in advance, scraping a melting channel groove, accurately positioning the melting channel, sealing a water jacket opening by using a baffle plate, continuously filling a hearth, removing the baffle plate, cleaning redundant ramming materials between the two melting channels, mounting the water jacket at a preset position, and sealing the edge. And after secondary filling and surface hardening are completed, coil-iron core assembling is conducted, and furnace building is completed.

The utility model discloses a complete cooling copper water jacket for a coal gasification hearth, which comprises an upper hearth water jacket, a lower hearth water jacket and a slag discharge port water jacket which are sequentially arranged on the inner wall of the hearth from top to bottom in the vertical direction, and the hearth water jacket comprises a conical wall body and a lower hearth connecting flange. The lower hearth water jacket comprises a horn-shaped wall body, an upper hearth connecting flange and a slag discharge port connecting flange, the lower hearth connecting flange and the upper hearth connecting flange are fixed through bolts, and the slag discharge port water jacket comprises a funnel-shaped wall body and a sealing flange. A cooling pipe circling along the wall body is arranged in each of the conical wall body, the horn-shaped wall body and the funnel-shaped wall body. The complete cooling copper water jacket for the coal gasification furnace solves the technical problems of poor high-temperature corrosion resistance, poor cooling effect, inconvenience in replacement, assembly and disassembly and short service life.

The utility model relates to the technical field of resin sand casting, in particular to a rapid sand cooling device for resin sand casting, which comprises a bottom frame, a circular horizontal tank with an open top is fixedly mounted at the top of the bottom frame, and a rotatable water jacket roller transversely penetrates through the circular horizontal tank with the open top. The water jacket roller is connected with a heat conduction conveying helical ribbon capable of making contact with the inner wall of the circular horizontal tank with the open top, the two ends of the circular horizontal tank with the open top are arranged to be a feeding end and a discharging end respectively, a discharging port is formed in the bottom of the discharging end, the liquid supply mechanism supplies cooling liquid for the water jacket roller from the discharging end, and the driving mechanism drives the water jacket roller to rotate. The cooling device has two cooling modes of natural wind heat dissipation and liquid cooling heat exchange, and the cooling effect of sand is improved.

The utility model relates to a vehicle low-temperature energy storage management system which is in communication connection with an external temperature sensor of a vehicle and comprises a heating device, an electronic water pump, a first flow control valve, an electric control three-way valve, an engine air inlet air filter and an engine. The electronic water pump is connected with the first flow control valve, the first flow control valve is connected with an inlet of the electric control three-way valve and connected with an air inlet of the engine air inlet air filter through a first outlet of the electric control three-way valve, and an air outlet of the engine air inlet air filter is connected with a water jacket water inlet of an engine to form an air inlet system heating loop. A second outlet of the electric control three-way valve is connected with a water jacket water inlet of the engine, a water jacket water outlet of the engine is connected with a first water inlet of the heating device to form an engine heat engine heating loop, heat is provided for the engine and an engine air inlet air filter, the engine and the engine air inlet air filter are heated, and then a vehicle is started rapidly and timely.

The utility model provides a flat mop which comprises a mop head, a mop rod and a wiping object, the mop rod is provided with a water squeezing device, the water squeezing device comprises a water squeezing sleeve, a water squeezing frame and a liquid spraying mechanism, the water squeezing frame is provided with a squeezer used for cleaning the wiping object, the liquid spraying mechanism comprises a liquid storage cavity, a liquid spraying opening and a pressing part, and the liquid storage cavity is communicated with the liquid spraying opening. The liquid spraying opening sprays liquid downwards to the wiping object and / or the water squeezing frame, the water squeezing frame is provided with an intercepting part capable of blocking part of cleaning liquid sprayed out by the liquid spraying mechanism, and the intercepting part guides the blocked cleaning liquid to the squeezer or the wiping object. The water squeezing device has the advantages that the liquid spraying mechanism and the water squeezing frame are arranged at the upper end and the lower end of the water squeezing sleeve respectively, so that the liquid spraying mechanism and the water squeezing frame are independent, the intercepting part guides intercepted cleaning liquid to the squeezer or the wiping object for cleaning, and the cleaning liquid is prevented from splashing and being wasted.