141results about How to "Problems affecting service life" patented technology

The invention discloses a cooling system of a hydrogen energy tramcar fuel cell. The cooling system comprises a hydrogen fuel cell, a circulating device, a cooling device and an electric heating pipe, wherein the hydrogen fuel cell, the circulating device and the cooling device are sequentially connected to form a cooling circulating loop; one end of the electric heating pipe I communicates with the circulating device through a pipeline, the other end communicates with the hydrogen fuel cell through a pipeline, and a heating circulating loop is formed. The temperature of a coolant entering the hydrogen fuel cell can be controlled within the best reaction temperature range accurately and more stably, so that the hydrogen fuel cell is located in a proper reaction temperature environment, and the reaction efficiency of the hydrogen fuel cell is improved; the cooling system is simple in structure, has an obvious effect and saves energy.

The invention discloses a chip type electronic cigarette heater which comprises a protection anti-fouling layer. The protection anti-fouling layer comprises a metal substrate, an insulating layer covering the surface of the metal substrate, a heating layer which covers the insulating layer and is used for heating the metal substrate, and a conductor layer which covers the insulating layer and is connected with the heating layer and used for conducting the heating layer. The substrate is set as the metal substrate, and the problem that the service life of an instrument is affected due to the characteristic that ceramics is hard and crisp is avoided; the metal substrate has the good thermal conductivity, the heat conducting speed is high, the heating efficiency of the chip type electronic cigarette heater is improved, and the heating response speed of the chip type electronic cigarette heater is increased; meanwhile, by arranging the insulating layer on the surface of the metal substrate, the thick film circuit heating layer formed by sintering resistance paste is arranged on the insulating layer, the advantages of high heating speed and high power density are achieved, and energy consumption is lowered; the invention further provides a preparation method of the chip type electronic cigarette heater and an electronic cigarette having the advantages.

An embodiment of the invention discloses an automatic air-conditioner switching method and an automatic air-conditioner switching device. Two air conditioners alternating working can be adopted to effectively prevent service life of an air conditioner from being affected after the air conditioner is used for a long time. The switching method includes judging whether a main engine is in an operating state or not when automatic switching function is started; if the main engine is not in the operating state, then judging whether an auxiliary engine is in the operating state or not; if the main engine is in the operating state, then judging whether preset time is arrived or not; if the preset time is arrived, then closing the main engine and opening the auxiliary engine to operate; if the auxiliary engine is in the operating state, then judging whether preset time is arrived or not; and if the preset time is arrived, then closing the auxiliary engine and opening the main engine to operate. 485 chips are adopted as communication tools, so that the auxiliary engine operation can be preset to ensure that working frequency of the auxiliary engine is the same with the main engine, and problems that power rate of the auxiliary engine is limited in automatic controlling and switching methods of audion amplifying circuits in the prior art are solved.

The invention belongs to the field of cell energy management, and particularly relates to a fuel cell hybrid power system energy management strategy. The management strategy is used for distributing the power of the proton exchange membrane fuel cell / lithium cell hybrid power system. Characteristics are as follows: according to different states of input variables of the energy management controller, the input variables comprise a power demand Pdem and a cell state of charge SOC, nine conditions are divided and correspond to nine rules combining determinacy rules and fuzzy rules to determine the proton exchange membrane fuel cell power PFC output in the hybrid power system. According to the fuel cell hybrid power system energy management strategy, effective energy distribution of the fuel cell hybrid power system can be improved, and dynamic response and output rationality of the system are remarkably improved.

The invention provides a middle groove of a scraper conveyer, the scraper conveyer and fully-mechanized coal mining equipment. The middle groove of the scraper conveyer comprises an insertion board ledge, a baffle ledge connected with a connecting support lug, a middle board, a base board, and a pin rail matched with traveling gear teeth of a coal mining machine, wherein a guiding cambered surface in sliding fit with guiding piston shoes of the coal mining machine is arranged on the baffle ledge. Due to the fact that the guiding cambered surface in sliding fit with the sliding piston shoes of the coal mining machine is arranged on the baffle ledge, the horizontal sliding range of the coal mining machine is limited, impact of substantial horizontal sliding of the coal mining machine on the pin rail of the middle groove is reduced, and the service life of the pin rail is prolonged.

The invention discloses an accurate cutting device for processing wear-resistant building materials. The accurate cutting device comprises a device body, two sliding rails are horizontally and correspondingly arranged on the two sides of the upper end of the device body, and a grating is embedded in the upper surface of the device body. According to the accurate cutting device, ceramic tile cutting and grinding integration can be achieved, time and labor is saved for manual cutting and grinding in construction engineering, the processing speed is increased, a clamping ruler is additionally arranged on a placing plate, so that the to-be-cut position of the ceramic tile to be cut can be accurately fixed, the cutting accuracy is improved; a spraying cover is additionally arranged on the outerside of the cutting wheel, spraying water is sprayed to the cutting position of the cutting wheel by the aid of the spraying holes when the cutting wheel is cut, the problem that the service life ofthe cutting wheel is affected due to the fact that the cutting wheel is damaged due to excessively high temperature during cutting is avoided; a dust suction cover is additionally arranged on the outer side of the polishing wheel, dust impurities generated during grinding of the cutting part of the ceramic tile are sucked through the suction holes, so that dust can be prevented from flying aroundso as to influence the working environment.

The invention discloses a nozzle flow rotating generation device and a nozzle flow rotating continuous casting method. The device comprises a cylinder type flow rotating generator and a cylinder type flow rotating tundish; the cylinder type flow rotating generator is mounted in a traditional continuous casting tundish, and an inner cavity of the traditional continuous casting tundish is communicated with an immersion type nozzle through the cylinder type flow rotating generator; the cylinder type flow rotating tundish has two mounting modes; according to the first mode, the cylinder type flow rotating tundish and the traditional continuous casting tundish are used in a cooperated manner, the cylinder type flow rotating tundish is mounted on the outer portion of the traditional continuous casting tundish, and the traditional continuous casting tundish is communicated with the immersion type nozzle through the cylinder type flow rotating tundish; and according to the second mode, the cylinder type flow rotating tundish is independently used, and a nozzle of a steel ladle is communicated with the immersion type nozzle directly through the cylinder type flow rotating tundish. The method comprises the steps that before continuous casting, according to the continuous casting technology, the nozzle flow rotating generation device is selected, then, the device and the traditional continuous casting tundish are assembled, during continuous casting, under the effects of molten steel gravity and tangent line entrances, molten steel generates rotating flowing, and molten steel in the immersing type nozzle generates rotary flowing.

The invention discloses a mobile terminal heat dissipation structure and a mobile terminal. The mobile terminal heat dissipation structure comprises a terminal body and a rear cover covering the rearpart of the terminal body; a fan for carrying out heat dissipation on the terminal body is arranged in a space between the terminal body and the rear cover; an opening is formed on the rear cover, anda cover board is arranged on the opening; the cover board is connected with the opening on the rear cover by at least one group of connecting pieces; when the fan is closed, the cover board and the opening on the rear cover are tightly closed under the connection of the connecting pieces; and when the fan is opened, the cover board is popped out of the opening on the rear cover, and is kept at acertain distance with the opening on the rear cover under the connection of the connecting pieces. According to the invention, the fan is utilized to carry out heat dissipation on the mobile terminal,and when the fan is opened, the cover board is popped out of the opening on the rear cover and is kept at a certain distance with the opening, so that airflow generated by the fan flows, thereby reinforcing a heat dissipation effect.

The invention discloses a battery heat management device of a new energy car. The battery heat management device comprises a base installing a battery, a protective box with an opening lower end, a first gas inlet pipeline, a second gas inlet pipeline, and a third gas inlet pipeline, wherein the base comprises a flat box body with an opening lower end and a bottom board connected at the bottom endof the box body, vent holes are distributed outside a groove in the upper end surface of the box body, one end of the first gas inlet pipeline is communicated with a cavity of the box body, the otherend thereof is provided with a gas collection hood, the first gas inlet pipeline is provided with a valve, a large port end of the gas collection hood faces the front of the car, one end of the second gas inlet pipeline is communicated with the cavity of the box body, the other end thereof is connected with a gas outlet of a fan, one end of the third gas inlet pipeline is communicated with the cavity of the box body, and the other end thereof is communicated with a gas outlet tube of a car air conditioner. The battery heat management device can effectively manage battery heat, makes the battery work in proper temperature range, and ensures that the battery has normal work performance and service life.

The invention provides a control method and system for an intelligent home operating system on the basis of the Internet of Things. The method comprises the following steps that: after the operating system of a first intelligent home of a first space responds to the operation instruction of a first user, under a situation that the first user leaves the first space, the intelligent home operating system of the first intelligent home responds to the second operation instruction of a second user, and the operation parameter of the first intelligent home is regulated to a second preset parameter,wherein the first operation parameter is used for regulating the operation parameter of the first intelligent home to a first preset parameter. By use of the method, the problem in the relevant art that the normal use of the user is affected since control instructions mutually conflict because the control permissions of a plurality of users can not be coordinated when multiple people have the control permission for the same intelligent home is solved, and the problem the service life of the intelligent home is affected since intelligent home equipment frequently responds to the instructions ofdifferent users in a period of time also can be solved.

The invention discloses an indicator sampling rate automatic switchover method. According to the indicator sampling rate automatic switchover method, the maximal possible frequency and the minimal possible frequency of the actual stroke of an indicator diagram are calculated according to an indicator diagram estimation stroke frequency, fitting is conducted on a periodic function through the least square method, an actual stroke periodic sampling point number, calculated according to the maximal possible frequency and the minimal possible frequency, of a set of sample data is contrasted with a preset single-period sampling point number range value of an indicator, the sampling rate of the indicator is adjusted timely, as a result, an accurate indicator diagram is formed through the accurate sample data, and the problems that the number of sampling points is too large, as a result, power consumption of the indicator is too high, and the service life of the indicator is affected are avoided.

The invention discloses an air cooling device for a battery of a new energy automobile. The air cooling device comprises a base for installing the battery, wherein the base consists of a flat box bodywith an opening at the lower end and a bottom plate that is connected to the lower end of the box body, the upper end surface of the box body is provided with a plurality of grooves for installing the battery, ventilation holes are distributed on the upper end surface of the box body and located outside the grooves, the lower end surface of the bottom plate is provided with an air inlet through hole leading to the box body, an air inlet pipeline is connected to the air inlet through hole, an air collecting cover is arranged at the front end of the air inlet pipeline, and the big mouth end ofthe air collecting cover faces the front of the automobile; when the new energy automobile is running, the outside air enters the box body through the air collecting cover and the air inlet pipeline,and then is discharged through the ventilation holes, and since the ventilation holes are distributed around each battery, the heat emitted by each battery can be uniformly blown away; and according to the scheme of the invention, the heat generated by a power battery can be dissipated in time, and the problem that the performance and the service life of the battery are influenced because the heatgenerated by the power battery cannot be dissipated in time cannot occur.

The invention discloses a food and medicine drying device, and relates to the technical field of foods and medicines. The drying device comprises a drying box, wherein a mesh plate is arranged in thedrying box; the lower surface of the mesh plate is overlapped with top ends of four cams; and the four cams are respectively clamped outside two rotating shafts. According to the drying device, through mutual cooperation of a first switch, a second motor, a half gear, a toothed plate, a sliding block, a pulley, a hot air fan, a second spring, a second switch, a first motor, the rotating shafts, the cams and the mesh plate, the defect that the hot air fan can only dry the surface of the food or the medicines, so that the underneath stacked foods and medicines are completely dried under the vertical movement of the mesh plate; and moreover, the wet or large size foods and medicines can be crushed through the horizontal movement of the pulley, so that the large size foods or medicines are completely dried as well, and the practicability of the device is improved.

The invention discloses an induction anti-extrusion safety door. The induction anti-extrusion safety door comprises a door frame and a door leaf hinged to the door frame. The door leaf is provided with a door lock handle. An electronic control telescopic structure connected with an electronic control unit is arranged on the upper border of the door frame. The telescopic end of the electronic control telescopic structure faces the door leaf. The induction anti-extrusion safety door further comprises human body induction sensors connected with the electronic control unit. The human body induction sensors are arranged at the positions, on the door lock handle side, of the door leaf, or the human body induction sensors are simultaneously arranged at the positions, on the door lock handle side,of the door leaf and the door frame, or the human body induction sensors are arranged at the positions, on the door leaf hinged side and the door lock handle side, of the door frame and the door leafcorrespondingly. By adopting the induction anti-extrusion safety door, through perception of the human body induction sensors to the human body and cooperation with the electronic control telescopicstructure, the problem that hands are extruded by the door can be effectively avoided, and normal use of the door is not affected.

The invention discloses a detection device for a motor. The detection device comprises a phase sequence detection module and a first indicator light. A first wiring point of the phase sequence detection module is connected with a first phase of a power supply, a second wiring point of the phase sequence detection module is connected with a second phase of the power supply, a third wiring point of the phase sequence detection module is connected with a third phase of the power supply, and the phase sequence detection module is used for detecting phase sequence connection of the power supply; the output end of the phase sequence detection module is electrically connected with a first switch and controls on and off states of the first switch according to detected phase sequence detection of the power supply; one end of the first switch is electrically connected with a null line, and the other end of the first switch is electrically connected with the motor; the first end of the first indicator light is electrically connected with the first phase of the power supply, and the second end of the first indicator light is electrically connected with the motor. The phase sequence of the power supply is detected through the phase sequence detection module, connection correctness of the phase sequence of the power supply is guaranteed, and the problem that the phase sequence of the power supply is reversely connected, the motor rotates reversely and consequently the service life of the motor is influenced is solved.

The invention belongs to the field of mechanical transmission, and relates to a step-up gear box, in particular to a step-up gear box for wind power generation. A connecting flange of the step-up gear box is in interference with a front half section of a planetary carrier through a spline; cylindrical matching faces are in interference connection with each other to transmit loads; the cylindrical faces are in interference connection with each other, so that a spline pair is not influenced by a bending moment, and only a torque is transmitted; the spline pair adopts the interference connection, so that the problem that adverse factors such as opposite friction among keys and teeth influence the service life of the spline is solved during power transmission; a planetary gear train adopts a composite planetary gear train, so that the weight of the gear box is reduced, the quantity of bearings is reduced, and the processing and manufacturing costs of the gear box are lowered; the quantity of gear meshing pairs is reduced; and the transmission efficiency of the gear box is improved greatly.

The invention belongs to the field of an agricultural technology, and discloses an agricultural spraying machine with a water level alarm function. The agricultural spraying machine with the water level alarm function comprises a spraying assembly and a protecting assembly arranged in the spraying assembly, wherein the protecting assembly comprises a communicating pipe, electric contact pieces, afloating block, an insulating bush and a sliding rod; a sliding rod is fixedly connected into the communicating pipe; the floating block is arranged on the outer side of the sliding rod in a sleevingway; the electric contact pieces are arranged on the top part of the floating block and the inner side of the sliding rod; the electric contact piece located on the inner side of the sliding rod is electrically connected with an external power supply; the electric contact piece located on the floating block is electrically connected with the spraying assembly; when a water level in the spraying assembly is higher, a floating force of water drives the floating block to move upwards, so that the two electric contact pieces fit to form an access, and the spraying assembly works; and when the water level is lowered to a certain position, the two electric contact pieces are separated to form an open circuit, and the spraying assembly is powered off so as to stop working, so that the occurrenceof the problem that when the water level in the spraying assembly is lower, the spraying assembly is powered on to work so as to cause idling and influence the service life of internal elements is avoided.

The invention discloses a method and a system for controlling a terminal screen to supplement light. The method comprises the steps of: dividing screen pixels into a plurality of groups in advance; determining a screen light supplementation intensity level according to current ambient light brightness when detecting that a screen light supplementing event is triggered; and determining the pixels used for supplementing light according to a preset correspondence the screen light supplementation intensity level and number of pixel groups used for supplementing light, and controlling a screen to supplement light with the determined pixels. The method and the system control different pixels to supplement light according to different intensities of supplementary light brightness, and avoid the problem that service life of an AMOLED screen is affected due to damage to pixels of the AMOLED screen because all the pixels of the screen are in high-brightness state when the AMOLED screen serves as a light supplementing lamp for supplementing light to a front-facing camera.

The invention discloses an automobile rubber spring seat comprising an installation base. The inner side of the installation base is connected with installation threaded rods through bearings in a rotating manner. The outer sides of the installation threaded rods are connected with a movement buckle plate through thread engagement. The movement buckle plate is located on the inner side of the installation base. The installation threaded rods penetrate the side wall of the installation base and extend to the outer side of the installation base. Spring fixing hooks are arranged on one side of the movement buckle plate, penetrate one side of the installation base and extend to the outer side of the installation base. A spring is arranged at the tail ends of the spring fixing hooks. An inner sleeve rod is arranged inside the spring. One end of the inner sleeve rod is fixedly connected with one side of the installation base. The automobile rubber spring seat is provided with the threaded rods, a sliding pressing plate and the inner sleeve rod, and the problem that because when the automobile rubber spring seat is used, it is hard to change the initial elastic force of the spring throughthe automobile rubber spring seat, the use effect of the automobile rubber spring seat is influenced is solved.

The invention discloses a semi-integral safety box and a manufacturing method thereof. The semi-integral safety box comprises a box body, a box door, a door lock component and a hinge component. The hinge component is arranged on one side edge of the box door, and the box door is connected with the box body through the hinge component. The door lock component is arranged on the box door and matched with a lockhole in the box body. The box body comprises a left side plate, a right side plate, an upper side plate and a lower side plate which are formed integrally in a punching mode. The box body further comprises a rear side plate which is connected with the left side plate, the right side plate, the upper side plate and the lower side plate in a press fit mode. The semi-integral safety box is high in mechanical strength and security. Continuous punch forming is adopted for the manufacturing method, so that production efficiency is greatly improved, production cost is reduced, and surface quality is good.

The invention discloses an energy-saving control system for air conditioners. The energy-saving control system comprises a central control unit, a detection switch arranged on an indoor ventilation window and a temperature sensor arranged indoors; the central control unit is provided with a timer and a first analog-digital converter used for converting analog signals of the temperature sensor into digital signals, and a brightness detection sensor is arranged indoors; the central control unit is further provided with a second analog-digital converter used for converting analog signals of the brightness detection sensor into digital signals; the energy-saving control system further comprises a control cabinet used for controlling the indoor air conditioners to be turned on. According to the energy-saving control system, the timer is arranged for recording the indoor constant temperature time and the ventilating and window-opening time, the unmanned state is assumed when the set time is up, the air conditioners enter the energy-saving state, and therefore the energy waste is avoided; adjustment and the voltage stabilization operation are carried out on power supply of the air conditioners, and therefore the stability of power supply of the air conditioners can be maintained.

The invention discloses a river sewage draining exit water quality filtering device which comprises a sewage draining square groove formed in a river sewage draining exit, and a sewage discharge portis formed in the front end of the sewage draining square groove; a rotating wheel is arranged at the upper opening of the sewage discharge port; screen cleaning scrapers are annularly and uniformly arranged on the rotating wheel at intervals; the outer edges of the screen cleaning scraping plates are matched with the sewage discharge port; a sieve plate used for filtering large-particle impuritiesis arranged on one side of the rotating wheel and located below the screen cleaning scraping plates, and a blow-off pipeline used for collecting and discharging the large-particle impurities is arranged on one side of the sieve plate; the device can realize automatic multi-stage filtration of the water quality of the river sewage draining exit, and is efficient and reliable in filtration and purification; meanwhile, hydraulic power of the sewage draining exit is converted into multi-stage filtering power, and lasting automatic filtering is achieved.

The invention discloses a communication equipment mounting bracket. The communication equipment mounting bracket comprises a communication terminal body, a loudspeaker, an anti-falling pad, a rotatingdisc and a lifting rod, the loudspeaker is embedded in the position, close to one side of a display screen, of the upper surface of a voice coil, the anti-falling pad wraps one end of a telephone base, a storage clamping groove is formed in one side of the telephone base, and the rotating disc is arranged at the upper end of the base. The structure is scientific and reasonable, and safe and convenient in use; the loudspeaker is disposed, and then the size of incoming call sound can be increased; the anti-falling pad is disposed, and then the problem that the service life of the communicationterminal body is influenced by collision of the communication terminal body is avoided; the storage clamping groove is disposed, communication content can be recorded at any time, and a user can storeuseful information conveniently; the lifting rod and the rotating disc are arranged, the position of the communication terminal body and the direction of the rotary communication terminal body can beadjusted at any time; and the design is simple in structure, practical in function and beneficial to operation of the user.

The invention discloses a photovoltaic battery chip and a fabrication method thereof. The photovoltaic battery chip comprises a matrix, a semiconductor layer, a first electrode layer and a second transmitting electrode layer, wherein the first electrode layer and the second electrode layer are arranged at two opposite layers of the semiconductor layer, at least one anti-reflection film combinationlayer is attached onto a surface, far away from the semiconductor layer, of the second electrode layer, the anti-reflection film combination layer comprises a first anti-reflection film layer and a second anti-reflection film layer, the first anti-reflection film layer is formed on a surface of the second electrode layer, the second anti-reflection film layer is formed on a surface of the first anti-reflection film layer, the refractivity of the first anti-reflection layer is smaller than the refractivity of the second anti-reflection film layer, and the refractivity of the first anti-reflection layer is smaller than the refractivity of the second electrode layer. The surface of the second electrode layer can be covered and protected very well by the anti-reflection film layer combinationlayer contained in the photovoltaic battery chip provided by the invention, the anti-reflection effect is effectively improved, the photoelectric conversion efficiency of the photovoltaic battery chip is greatly improved, and the service lifetime of the photovoltaic battery chip is prolonged.

The invention discloses copper rod processing equipment, and relates to the technical field of copper rod production. The copper rod processing equipment comprises a shell, wherein a first hydraulic rod is fixedly connected to one surface of the shell; a first block is fixedly connected to one end of the first hydraulic rod; a semicircular penetrating hole is formed in one surface of the first block; a cleaning cover is fixedly connected to one surface of the semicircular penetrating hole; one end of an output shaft of a first motor penetrates through a cavity and extends to the outer side ofthe cavity; and a plurality of cleaning blades are fixedly connected to one end, which is located on the outer side of the cavity, of the output shaft of the first motor. According to the copper rod processing equipment, the surface of a copper rod which is cut is cleaned by a cleaning cover device so as to remove dust or attached copper scraps from the surface of the copper rod, so that the attractive appearance and the quality of the copper rod cannot be influenced by more dust or attached copper scraps on the surface of the copper rod; an integral sealing structure is adopted, so that copper scraps generated by cutting of a cutting knife which rotates at high speed are prevented from splattering everywhere so as not to pollute the environment or cause personal injury to operators.

The invention discloses an asphalt storage tank energy-saving heating device for waterproof coiled materials, and relates to the technical field of asphalt, the asphalt storage tank energy-saving heating device comprises a device box, a storage tank, a material injection pipe and a control panel, one end of the top of the device box is fixedly sleeved with the storage tank, and the material injection pipe is arranged at the top of the storage tank. According to the device, asphalt raw materials are injected into an inclined baffle and then flow into a flow guide groove, then a driving motor is matched to be electrified to drive a transmission gear, so that rotating gears engaged with the two sides are driven, then the rotating gears drive a fixing column to rotate to drive a rotating shaft, and then the rotating shaft drives a rotating plate to rotate; according to the device, the blocked asphalt raw materials are shifted to move, the function of increasing the asphalt output speed is achieved, the device can conveniently utilize rotating force to shift the blocked asphalt raw materials, the asphalt output speed is increased, meanwhile, the problem that the asphalt is solidified and blocked when the temperature is reduced during flowing is solved, the device can accelerate the discharging function, and the anti-blocking function is achieved; the device working efficiency is improved.

The invention discloses a system for controlling a speed of a scarifier working device and a speed control method. The system for controlling the speed of the scarifier working device comprises an electrical control system and a hydraulic control system, wherein the electrical control system comprises a master controller and further comprises a swing arm elevating sensor, a swing arm lowering sensor, a bucket rod digging sensor, a bucket rod unloading sensor, a scarification hook digging sensor and a scarification hook unloading sensor which are respectively and electrically connected with themaster controller; the electrical control system further comprises a swing arm rotation angle sensor, a bucket rod rotation angle sensor and a scarification hook rotation angle sensor which are electrically connected with the master controller. According to the system for controlling the speed of the scarifier working device and the speed control method provided by the invention, steady speed control of the swing arm, the bucket rod and the scarification hook can be ensured.

The invention discloses a mining membrane type high-low pressure conversion device, and belongs to the technical field of mine refrigeration machines. The mining membrane type high-low pressure conversion device comprises a refrigeration station arranged outside a mine and a radiator arranged in the mine, and further comprises a first container and a second container which are arranged in the mine, a first elastic membrane is arranged in the first container, a second elastic membrane is arranged in the second container, the first container and the second container are divided by the first elastic membrane and the second elastic membrane respectively into the cold water sides and the hot water sides, the cold water sides of the first container and the second container are communicated with a water outlet of the refrigeration station and a water inlet of the radiator respectively, and the hot water sides of the first container and the second container are communicated with a water return opening of the refrigeration station and a water outlet of the radiator respectively. As only membrane elastic deformation in the containers is adopted in the high-low pressure conversion process for transferring, the cold losses are small, accurate control is carried out, the working condition of the refrigeration station is matched with the actual refrigeration load, the operation energy consumption of the refrigeration station is reduced, and the temperature of a local area in the mine can be efficiently reduced.

The invention relates to a milling drum quick-changing structure, a milling machine and a using method of the milling drum quick-changing structure, and belongs to the field of pavement maintenance operation construction equipment. The milling drum quick-change structure comprises a box body, a speed reducer, a milling drum and an internal support body, the milling drum is arranged in the box body through an internal support body; the internal supporting body comprises a supporting cylinder, a flange plate and a shaft end assembly. One end of the supporting cylinder is a closed end, and the closed end is connected with the flange plate; the other end of the supporting cylinder is an open end, and the open end is connected with the moving end of the speed reducer to form a closed inner cylinder cavity. The shaft end assembly is connected with the milling drum and the flange plate through the connecting seat; the whole process of replacing the milling drum is simple and efficient, and the labor intensity is greatly reduced.