410results about How to "Realize the cooling function" patented technology

The invention relates to a high-precision rotary working-table driven by a moment motor, which comprises a turntable rotary table (1), a clamping mechanism (2), a box seat (4) and a central shaft (19), wherein, the rotary table (1) is fixed at the end part of a moment motor rotator (5); the fixed box seat (4) is connected with a moment motor stator (6); the rotary table (1) is connected with the moment motor rotator (5) through an axial radial bearing (18) to form a component; the outer ring of the axial radial bearing (18) is connected with the box seat (4); the moment motor stator (6) is integrally connected with the box seat (4); and the clamping mechanism (2) is mounted between the inner surface of the outer ring of the rotary table (1) and the outer surface of the box seat (4). The hydraulic braking device set in the invention has a simple structure, large clamping action area, high clamping moment, bigger braking force, stable clamping and smaller influences on system and transmission, so the invention can meet the requirements on stable rotation and reliable braking in high-grade numerical control machine and meet the processing demands with high requirements of all aspects.

The invention discloses a full-automatic chemiluminiscence tester and belongs to the field of chemiluminiscence testing.The full-automatic chemiluminiscence tester comprises a mechanical arm module, a refrigeration module, a power module, a reagent sample disk, a sampling needle component, a stirring component, a reaction cup frame, an incubation device, a magnetic separation component, a washing station component and a measuring room.Full-automatic management is achieved for mixing, reacting, incubating, magnetic separating, detecting and other procedures of a sample to be tested, the detection efficiency is improved, and operation errors are reduced.

The invention discloses a multi-functional power equipment cabinet with multiple damping functions. The multi-functional power equipment cabinet comprises a cabinet body. The bottom of the cabinet body is provided with an air distribution tube that is communicated with an external air inlet tube. A plurality of air outlets are uniformly arranged on the air inlet tube. The outer side wall of the cabinet body is provided with a cooling liquid box. The air inlet tube penetrates through the cooling liquid box. The air inlet tube is provided with an induced draft fan. The inner side wall of the cabinet body is provided with a temperature sensor. The temperature sensor and the induced draft fan are electrically connected with a control device. A base is arranged below the cabinet body. The base is provided with a first groove. The bottom of the first groove is provided with a first rubber damping block. The first rubber damping block is internally provided with a cavity. The air distribution tube can distribute cold wind into the cabinet body uniformly, so as to dissipate heat of the cabinet body uniformly and effectively to ensure power equipment in the cabinet body to run normally; further the temperature sensor can reduce the temperature of the interior of the cabinet body intelligently.

The invention discloses an air conditioner and a control method thereof. The air conditioner comprises a compressor, a reversing valve set, an outdoor heat exchanger, indoor heat exchangers, a bottomplate and a heating branch. The compressor comprises an exhaust port and a gas return port. The reversing valve set comprises a first valve port, a second valve port, a third valve port and a fourth valve port. The first valve port communicates with the exhaust port. The fourth valve port communicates with the gas return port. Water drainage holes are formed in the portion, below the outdoor heatexchanger, of the bottom plate so that condensate water generated by the outdoor heat exchanger can be drained. The heating branch is arranged on the bottom plate. One end of the heating branch is connected between the exhaust port and the first valve port, and the other end of the heating branch is connected between the gas return port and the fourth valve port. According to the air conditioner,the bottom plate can be heated through high-temperature refrigerant flowing out from the compressor, the heat exchange effect of the outdoor heat exchanger can be prevented from being influenced by freezing of the bottom plate, and stability of operation of the air conditioner is improved.

The invention provides a satellite borne active temperature control system which comprises an electrical-control heat insulating screen, an electric heater, an LHP (loop heat pipe) evaporator and an LHP radiator, wherein the electrical-control heat insulating screen is mounted on a side plate of a spacecraft; the electric heater and the LHP evaporator are mounted on heat tubes in different areas of a single machine mounting plate; the single machine mounting plate forms a heat pipe network through pre-embedded heat tubes; and the LHP radiator is mounted on the side plate of the spacecraft. The satellite borne active temperature control system solves the difficulty of a thermal control design of an inclined rail spacecraft, greatly realizes self-heating and self-cooling functions of the spacecraft, and can be applied to spacecraft thermal control with a complex rail external thermal flux environment and an internal power consumption varying condition.

The invention relates to an air-source heat pump air-conditioner heater, comprising in-out heating water system and air-conditioner system. The in-out heating water system is connected with the air-conditioner system. Said in-out heating water system comprises water tank, heat exchanger of water tank, water inlet port and water outlet port. The water inlet port of heat exchanger of water tank is connected with water inlet port by pipe and the water outlet port of heat exchanger of water tank is connected with water inlet port of water tank. The water outlet port of water tank is connected with the water outlet port. In the invention, because the structure that in-out heating water system is combined with the air-conditioner system is adopted; little electric power can be needed to drive the compressor run. Not only refrigerating and heating performance can be realized but also hot water is generated in cycle so as to realize energy recovery. It is provided with compact structure, low cost, convenience installment and maintenance. It can decrease energy consumption greatly and the thermal efficiency is improved greatly.

This heat pump type hot water supply apparatus with a cooling function is provided with a second refrigerant circuit R2 branched downstream of a high pressure refrigerant passage 2a to pass through a second expansion valve 4b and a low pressure refrigerant passage 9a of a brine cooling heat exchanger 9 and to join upstream of a refrigerant compressor 1 to be in parallel with a first refrigerant circuit R1, and a cold brine circuit B1 annularly connecting a brine passage 9b of the brine cooling heat exchanger 9, a cold brine circulating pump 8 and a terminal heat exchanger 10. A refrigerant is allowed to flow through the low pressure refrigerant passage 9a, and the cold brine circulating pump 8 is operated to exchange heat between the refrigerant of low temperature and low pressure flowing through the low pressure refrigerant passage 9a, and brine flowing through the brine passage 9b to cool the brine. Hot water supply and cooling can thereby be performed by one simple refrigerating cycle apparatus with a heat source integrated. Moreover, since waste cold heat is used, energy saving can be attained, and an apparatus cost and a running cost can be suppressed low.

The invention relates to a hybrid electric vehicle and a thermal management system thereof. The system includes an air conditioning refrigeration circulation loop, a motor heat exchange branch, a battery heat exchange branch, and an engine heat exchange branch, wherein the air conditioning refrigeration circulation loop comprises a compressor, a condenser, an evaporator, and a heat exchanger, a first group joint of the heat exchanger is used for connecting the evaporator, and the motor heat exchange branch, the battery heat exchange branch, and the engine heat exchange branch are connected inparallel and are connected with a second group joint of the heat exchanger through a water valve. The system achieves refrigeration inside a vehicle by controlling the air conditioning refrigeration circulation loop, achieves battery refrigeration by controlling the air conditioning refrigeration circulation loop and the battery heat exchange branch, achieves motor refrigeration by controlling theair conditioning refrigeration circulation loop and the motor heat exchange branch, achieves usage of engine residual heat for battery heating by the battery heat exchange branch and the engine heatexchange branch, achieves usage of residual heat of a motor for battery heating by the motor heat exchange branch and the battery heat exchange branch and achieves efficient utilization of energy of awhole vehicle.

The invention relates to an integrating sphere cooling and microwave integrating cavity used for miniaturized cold atomic frequency standard, which is formed by connecting an integrating sphere, a cylindrical microwave cavity, a flange and a four-way connector through supporting screws. The integrating sphere cooling and microwave integrating cavity has the characteristics of having the advantages of mature technologies, easiness in processing and large uniform central microwave field region for the cylindrical microwave cavity and having the advantage of cooling for the integrating sphere.

The invention discloses a ship exhaust gas mixed type desulfurization device and a working method thereof. The device comprises an exhaust gas power generation system, an exhaust gas desulfurization system, an exhaust gas discharging system and an automatic monitoring and controlling system; and the working method comprises the steps of exhaust gas power generation, exhaust gas desulfurization and exhaust gas discharging. Because the desulfurization device disclosed by the invention adopts organic Rankine cycle to perform power generation, so that the exhaust gas waste heat of a ship host is fully used, jacket water of the host is used as a heating source of an organic working medium, and the generated electric energy is used for the desulfurization system, so that the comprehensive utilization of the energy of a ship system is realized. Because the desulfurization device disclosed by the invention adopts the mixed type desulfurization system, when a ship navigates on the high seas, an open type seawater method is adopted for desulfurization, and when the ship navigates in a harbor, a closed NaOH solution method is adopted for desulfurization, so that the actual needs of the ship for desulfurization under different operating conditions are realized. Because the desulfurization device disclosed by the invention adopts a double-tower structure, efficient desulfurization of the ship exhaust gas is realized, and the strict requirements of all conventions on tail gas discharge after gasification are met.

The invention discloses a moisture-proof dry cabinet and belongs to the technical field of an outdoor cabinet. The moisture-proof dry cabinet includes an inner cabinet body and an outer cabinet body,wherein the inner cabinet body is connected with a top inner wall of the outer cabinet body, a moisture absorbing mesh is connected between the inner cabinet body and the outer cabinet body, an outerside wall of the outer cabinet body is provided with an air vent through grooving, the outer side wall of the outer cabinet body is provided with a vertically arranged sliding groove through grooving,the sliding groove is arranged at an outer side of the air vent, the sliding groove is internally in sliding connection with a U-shaped baffle plate, a top of the outer cabinet body is connected witha rain collection assembly, an water outlet end of the rain collection assembly is connected with a communication pipe, one end of the communication pipe away from the water collection assembly is arranged at an inner chamber of the outer cabinet body and presses against a bottom inner wall of the inner cabinet body, one end of the communication pipe penetrating through the outer cabinet body isconnected with an adjusting water tank mounted on the outer side wall of the outer cabinet body, and the adjusting water tank is arranged below the U-shaped baffle plate. The moisture-proof dry cabinet is advantaged in that the heat radiation function of electronic devices in the cabinet in an enclosed state is achieved, and moisture-proof and heat radiation functions are further achieved.

The invention discloses a fruit and vegetable storage and transportation fresh-keeping box with the functions of sterilization and pesticide residue degradation, comprising a box body and a box cover, wherein the box cover hermetically covers on an upper opening of the box body; a heat insulating layer is coated on the inner side wall of the box body, and an anti-oxidation layer is coated outside the heat insulating layer; the box cover is provided with a small-size ozone generator capable of continuously generating ozone; the bottom of the inner side of the box body is provided with a partition rack; the partition rack is provided with a through hole; a fluid refrigerant bag is arranged on the lower part of the partition rack at the bottom inside the box body; and the inner side surface of the box cover is provided with the small-size ozone generator. The invention has good green physical fresh-keeping effect on fruits and vegetables, repeated use and extrusion resistance and is beneficial to assembly and disassembly; ozone generated by an ozone generating device inside the box body has the functions of sterilization, pesticide residue degradation, the removal of ethylene generated by the fruits and the vegetables, and the like, therefore the purpose of green safe fresh-keeping of the fruits and the vegetables can be realized through the ozone; the through hole of the bottom partition rack is beneficial to the circulation of the ozone inside the fresh-keeping box, therefore the fresh-keeping effect of the fruits and the vegetables is enhanced; in addition, the effect of temperature reduction can be realized through the repeatedly used fluid refrigerant bag.

The invention relates to a highly-efficient air energy water source heat pump integrated unit which comprises a compressor, a first heat exchanger, a second heat exchanger, a heat exchange tower, a water pump, an expansion valve and a reversing valve, wherein the first heat exchanger is arranged in the heat exchanger tower; an output of the compressor is connected with an inlet of the first heat exchanger through the reversing valve, an outlet of the first heat exchanger is divided into two paths which are respectively connected with an inlet and an outlet of the expansion valve; the outlet of the expansion valve is connected with an inlet of the second heat exchanger through a one-way valve, an inlet of the second heat exchanger is also connected with the inlet of the expansion valve; the outlet of the second heat exchanger is connected with the inlet of the compressor; and the heat exchanger tower is provided with the water pump for providing cooling media circulating power. The invention has simple structure, small volume, high energy efficiency ratio, lower cost, easy installation and construction, lower cost of the operation and convenient maintenance, thereby being an air conditioner cooling, heating and healthy hot water making mode with development potential, and being suitable for industrialized application. The invention can solve the problems of instability factor of weather with an air source, limitation of ground and water sources, overhigh initial cost and the like.

The invention discloses an automobile heat managing system and an electric automobile. The automobile heat managing system comprises a heat pump air conditioning system, a battery pack heat exchanging system and a first plate heat exchanger, wherein the heat pump air conditioning system comprises an indoor condenser, an indoor steamer, a compressor and an outdoor heat exchanger; a refrigerant inlet of the first plate heat exchanger communicates with an outlet of the outdoor heat exchanger via a selectively connected or disconnected battery cooling branch, or communicates with a first end of a selectively connected or disconnected first branch and a first end of a selectively connected or disconnected second branch; a refrigerant outlet of the first plate heat exchanger communicates with an inlet of the compressor via a battery cooling backflow branch; and the first plate heat exchanger is serially connected to a battery cooling liquid loop of the battery pack heat exchanging system. Cooling liquid is cooled via the refrigerant and then the battery is cooled by the cooling liquid, so the battery can work in a proper temperature range in summer; and therefore, battery charging and discharging efficiency can be improved, cruising ability and service life can be enhanced.

The invention relates to an electric vehicle power battery heat management device based on a semiconductor refrigeration technology. The electric vehicle power battery heat management device is arranged in a battery cell module, and a gap is reserved between the heat management device and the battery cell. The electric vehicle power battery heat management device comprises a semiconductor chillingplate, two fixedly connected radiators, a controller and heat-conducting elements, wherein heat or cold produced by the semiconductor chilling plate is uniformly distributed on the radiators by virtue of the heat-conducting elements; the two radiators are respectively arranged at a heat end and a cold end of the semiconductor chilling plate; a plurality of heat-conducting elements are respectively connected between the heat ends or cold ends of the radiators and the semiconductor chilling plate in a pressing manner; and the controller is connected with the semiconductor chilling plate by a wire and controls the semiconductor chilling plate to be heated or chilled by switching the voltage polarity. According to the electric vehicle power battery heat management device disclosed by the invention, with the adoption of a semiconductor electronic technology, heating and cooling functions are realized by switching the voltage polarity, and the two radiators are respectively arranged on twoside faces of the semiconductor chilling plate, so that the heat transfer efficiency is improved. Moreover, the heat-conducting elements are respectively connected between the radiators and the semiconductor chilling plate in a pressing manner, and the heat-conducting efficiency between the semiconductor chilling plate and the radiators is improved.

The invention innovatively applies an abnormal piezocaloric effect material with negative thermal expansion properties in solid state refrigeration and / or heat storage application. An in-situ high-pressure differential scanning calorimeter test is carried out on a preferred material NH4SCN to verify that the abnormal piezocaloric effect material generates heat absorption phase change when pressureis applied and generates heat release phase change when the pressure is unloaded, the pressure can effectively control the heat absorption and release process of the phase change, heat can be effectively stored, and an experimental theoretical basis is provided for practical application of the abnormal piezocaloric effect material.

The invention provides a refrigeration device of a water dispenser. The refrigeration device comprises a compressor supplying refrigeration power to the water dispenser, a condenser connected with the compressor, a cold container evaporator for refrigerating the cold container of the water dispenser and a cold closet evaporator for refrigerating the cold closet of the water dispenser, wherein the water dispenser is internally provided with a timer for counting working time of the compressor and is simultaneously provided with a first controller electrically connected with the timer, the first controller is used for setting first preset time, respectively detecting the temperatures of the cold container and the cold closet after the timer counts the preset time continuously, and controlling the compressor to be closed when the temperatures of the cold container and the cold closet do not reach the preset temperature, and by means of controlling the work time and closure of the compressor by virtue of the synergistic effect of the timer and the first controller, the problem of abnormal work inside the water dispenser caused by the fact that the compressor carries out continuous refrigeration on the cold closet is avoided. The invention further provides the water dispenser with the refrigeration device.

The invention discloses an efficient exhaust gas purifying device which comprises a purifying tank, a water storage tank and a water pump. An air inlet pipe is arranged in the bottom of one side of the purifying tank; an activated carbon fiber layer, an alkaline filler layer, an acidic filler layer, a ceramic membrane layer and a spray pipe are successively arranged in the purifying tank from top to bottom; atomizing nozzles which are distributed in an equally spaced manner are arranged in the bottom of the spray pipe; the bottom end of the purifying tank is communicated with the water storage tank through a drain pipe; the water pump is communicated with the water storage tank and the spray pipe through water pipelines; an exhaust pipe is arranged on the top end of the purifying tank; and a threaded heating pipe is arranged in the exhaust pipe. By treating exhaust gas in multiple layers, the exhaust gas is more thoroughly purified, so that the purifying effect of the exhaust gas is improved greatly, and the environmental pollution is reduced. By arranging the threaded heating pipe in the exhaust pipe, an exhaust gas dehumidifying function after purification can be achieved, and the purified exhaust gas can well meet the emission standard.

A pure electric vehicle heat pump air conditioning system comprises a compressor, a two-phase cut-off valve A, a two-phase cut-off valve B, a cut-off expansion valve A, a two-phase cut-off valve C, athree-phase cut-off valve A, an outdoor heat exchanger, a three-phase cut-off valve B, a cut-off expansion valve C, an indoor a heat exchanger, a gas-liquid separator, a cooling module and a heat collecting module. The indoor heat exchanger comprises an evaporator and a condenser. The cooling module comprises a battery pack and a cut-off expansion valve B. The heat collecting module comprises a water pump, an inverter, a motor, a water tank, an expansion water tank and a heat exchanger. The compressor, the two-phase cut-off valve A, the condenser, the cut-off expansion valve A, the outdoor heat exchanger, the three-phase cut-off valve B, the cut-off expansion valve C, the evaporator and a vapor-liquid separator are connected in series. The cooling module is connected in parallel to the evaporator and the cut-off expansion valve C. The heat collecting module is connected in series between the three-phase cut-off valve B and the vapor-liquid separator. The pure electric vehicle heat pumpair conditioning system realizes the full utilization of heat of the water tank, protects the battery, runs stably, and saves space and costs.

The invention provides an ultralow temperature heat pump control system. The ultralow temperature heat pump control system comprises a circulating main loop and a circulating auxiliary loop, wherein the circulating main loop is composed of an evaporator, a compressor, a condenser and a first electronic expansion valve, and the circulating auxiliary loop is composed of a second electronic expansionvalve and an electromagnetic valve. The ultralow temperature heat pump control system further comprises a sampling unit, a compressor drive unit and a main control unit. The evaporator and the sampling unit are electronically connected with the main control unit. The compressor drive unit is electrically connected between the compressor and the main control unit. The main control unit is furtherelectrically connected with the first electronic expansion valve, the second electronic expansion valve and the electromagnetic valve. The sampling unit is used for measuring temperature signals in real time and outputs the temperature signals to the main control unit. The compressor dive unit is used for outputting drive signals to the compressor according to the output of the main control unit.The main control unit controls a first opening degree of the first electronic expansion valve and a second opening degree of the second electronic expansion valve according to the temperature signalsand then adjusts the suction superheat degree of the compressor and the exhaust superheat degree of the compressor.

The invention discloses a roof integrated explosion-proof air conditioner, which comprises a sheet metal shell mounted on a roof, wherein the sheet metal shell is internally divided into a refrigerating chamber and a heat dissipating chamber by a partition, the refrigerating chamber is internally provided with an evaporator, an explosion-proof centrifugal fan for cooling and a temperature detecting module, the heat dissipating chamber is internally provided with a compressor, a condenser, an explosion-proof control box, a refrigeration system pressure protection module and a temperature protection module, a top cover of the heat dissipating chamber is provided with an axial flow fan corresponding to the condenser in position, and a hollow protection cover is arranged above the axial flow fan. The roof integrated explosion-proof air conditioner has the advantages of excellent explosion-proof function, high safety, small space occupation and simple and convenient installation and maintenance, can ensure the cooling effect of a high-temperature dangerous environment of drilling, petroleum and chemical industries, etc., effectively reduces the equipment occupying space, and also has the characteristics of convenient installation and maintenance, safety and reliability.

The invention relates to a solar and air energy combined power generation system and refrigeration, power generation and heating method thereof. The solar and air energy combined power generation system comprises a heat transfer assembly which constitutes a loop through pipelines in series and an electricity generating assembly, and a media recovery assembly. The heat transfer assembly comprises an evaporator and a heat exchanger. The electricity generating assembly is powered by high pressure steam to generate electricity and provided with an air inlet end and an air outlet end. The media recovery assembly comprises an air heat exchanger connected in series by pipelines, a first spray absorber and a liquid storage pot for dielectric aqueous solution. The liquid storage pot is connected with a medium inlet of the evaporator through a first installation pump. A medium outlet of the evaporator is connected with the air inlet end of the electricity generating assembly through a regulatingassembly on the pipelines. The air outlet end of the electricity generating assembly is connected with the air heat exchanger. According to the solar and air energy combined power generation system and refrigeration, power generation and heating method thereof, the solar and air energy are used for performing circulating flow and heat transfer through the medium, in the heat transfer process, absorption of heat, temperature rising and pressure boosting of the medium are conducted, high pressure medium pushes a turbine to drive a generator to produce electricity through throttling expansion, and simultaneous refrigeration and heating function is realized.

The invention provides a feeding bottle with a temperature control function. The feeding bottle comprises a bottle body, a nipple, a nipple ring, a bottle cap, a temperature adjustment device, a liner and a base, wherein splitting plates are uniformly crosswise distributed on the periphery of the outer layer of the temperature adjustment device, and intervals are reserved among the splitting plates in up, down, left and right to form a fluid channel; an air pump, a lithium battery and a heating device are arranged in the base; a jack and an air inlet are formed outside the base, the air inlet is communicated with the air inlet of the air pump, and the jack can be externally connected with a charger to charge electricity to the lithium battery; a temperature controlled range value is set in a temperature sensor switch, the air pump is in an opened state only when the temperature in the liner is higher or lower than the temperature controlled range value, and the heating device is in an opened state only when the temperature in the liner is lower than the temperature controlled range value; under an air pump opening state, gas flows through the air inlet and holes in the splitting plates and comes out from the air outlet, and performs temperature exchange with liquid in the liner, so that the function of heating or cooling the liquid in the liner can be achieved.

The invention discloses a greenhouse canopy environment control system and method based on a drip irrigation pipe network. The greenhouse canopy environment control system comprises head devices and a pipe network, wherein each head device comprises a pressure hot air device, a pressure CO2 air source device, a ventilation and air-exchange device and a drip irrigation fertilizing device; and the pipe network comprises a water pipe, a branch pipe, a capillary pipe and a drip irrigation emitter. By switching the different head devices, operation such as greenhouse canopy temperature regulation, CO2 fertilization, ventilation, air exchange, cooling, dehumidification, drip irrigation fertilization and the like can be realized. In the invention, the greenhouse canopy environment is controlled by the drip irrigation pipe network, the control space is reduced into the crop canopy from the entire greenhouse space, and meanwhile, the uniformity is also greatly improved, thereby greatly reducing the energy consumption for greenhouse environment control, lowering the investment on control equipment, providing a uniform and appropriate environment for the growth of crops, and improving the production capacity and quality of the crops.

The invention discloses a multi-functional integrated air conditioning system which relates to the technical field of air conditioners and aims to realize functions including cooling, heating and production of domestic hot water. Meanwhile, the functions including the cooling, the heating and the production of the domestic hot water are realized by the same outdoor unit to make the integration level of a machine set higher. The multi-functional integrated air conditioning system comprises an outdoor unit, an indoor unit, a floor heating pipe group, a controller and a water tank, wherein the water tank comprises a fifth stop valve, a sixth stop valve, a heat exchange pipe and a water tank controller; the heat exchange pipe is connected to the outdoor unit by a refrigerant pipeline; the water tank controller is connected to the outdoor unit; the fifth stop valve is disposed on the refrigerant pipeline which is connected with a refrigerant inflow end of the heat exchange pipe along a refrigerant inflow direction; and the sixth stop valve is disposed on the refrigerant pipeline which is connected to a refrigerant outflow end of the heat exchange pipe.

The invention discloses a low-water-sucking water pump, which comprises a pump shell, a first water outlet, a water inlet, a motor and an impeller, wherein the first water outlet is arranged on one side of the pump shell; the impeller is fixedly arranged on the spindle of the motor; the bottom of the pump shell is fixedly provided with a base; a pump cavity is formed by the base and the pump shell; the motor and the impeller are both arranged in the pump cavity; the pump shell is provided with a vent valve device with a steel ball; the water inlet is arranged on the position relatively below the impeller on the base; the upper part of the impeller is provided with a fairing; the fairing passes through the spindle and is in sealing with the spindle by a sealing ring; an inner cavity is formed by the fairing and the base; and the fairing is provided with a second water outlet from which conveying liquid can freely enter and leave. The invention aims to provide the low-water-sucking water pump which has the characteristics of high pumping speed, good effect and long service life, can be automatically started and quickly pumped, can be used for pumping or dewatering water pools, basements or other occasions with the lower water level.

The invention relates to a thermal-insulating, oxidizing and cooling device used in vanadium extraction from stone coal and a using method of the device, and the device belongs to the technical field of vanadium extraction. The thermal-insulating, oxidizing and cooling device comprises a secondary air fan, a screening chute, a thermal-insulating and oxidizing segment, a heat compensation system, a cooling segment, a vibrating discharge device and a chain-slat conveyor, wherein the screening chute is supported on a beam at the upper part of the thermal-insulating and oxidizing segment in an inclined way and an angle of 25 degrees is formed between the screening chute and the horizontal surface, the thermal-insulating and oxidizing segment is arranged under the screening chute, the cooling segment is arranged below the thermal-insulating and oxidizing segment; the cooling segment is directly communicated with the thermal-insulating and oxidizing segment in a welded way, the lower end of the cooling segment is connected with the vibrating discharge device through bolts; conveying equipment, namely the chain-slat conveyor is arranged at a 350mm part below the vibrating discharge device; the heat compensation system is arranged 300mm above the connection part of the thermal-insulating and oxidizing segment and the cooling segment; the heat compensation system is connected with the thermal-insulating and oxidizing segment through flange bolts; the secondary air fan is introduced into the cooling segment (5) through an air pipeline; and the air pipeline of the secondary air fan (1) is connected with the cooling segment (5) through flange bolts. The thermal-insulating, oxidizing and cooling device and the using method of the device have the advantages of solving the problems such as insufficient oxidizing atmosphere and short thermal insulation time in stone mine calcination.

The invention discloses a self-melting filling type steel plastic composite pipe end sealing machine. The machine comprises a clamping mechanism, an integrated heating, cooling and sealing mechanism, and a first oil cylinder or a first cylinder for driving the integrated heating, cooling and sealing mechanism to move to a pipe end so as to coat the pipe end in a pipe end sealing cavity of the integrated heating, cooling and sealing mechanism, wherein a pipe sealing ring is preset in the pipe end sealing cavity. A self-melting filling type steel plastic composite pipe end sealing method comprises the steps of: pipe clamping and limiting, feeding of the pipe sealing ring, pipe end heating and sealing, and cooling of the sealed pipe end. The self-melting filling type steel plastic composite pipe end sealing machine and the sealing method thereof can keep the wall thickness of the pipe end invariable; the end part of the sealed pipe accords with the standard requirements, and can be connected with a stand pipe and a pipe fitting; the machine and the method can realize the heating and cooling integration; and in cooling, peripheral equipment is not needed, and the self-melting filling type steel plastic composite pipe end sealing machine can be used for realizing both heating function and cooling function.

The invention relates to a CCD refrigerating plant of a Raman spectrometer, and in particular to a multistage and adjustable CCD refrigerating plant of the Raman spectrometer. The refrigerating plant can be configured to have one single stage or multiple stages according to the demand for refrigerating capacity, and each refrigerating stage is an independent refrigerating unit. Each independent refrigerating unit circuit comprises a temperature sensor, a temperature detection circuit, a temperature setting circuit, a differential amplification circuit, a PID control circuit, a clock control circuit, a PWM pulse modulation circuit, a switch circuit, a TEC refrigerating controller, a CCD device and a heat dissipation device. The multistage and adjustable CCD refrigerating plant of the Raman spectrometer can be arranged singly to achieve the CCD refrigerating function, can also be connected with other controllers to receive temperature set parameters sent by the controllers, feed the real-time temperatures back to the controllers after quick refrigerating is conducted and display the real-time temperatures.