62results about How to "Reduce hard contact" patented technology

The invention belongs to the technical field of numerical control machinery, and discloses a numerical control machining turning and polishing all-in-one machine. The all-in-one machine comprises a rack, wherein a controller is installed on one side of the rack, a motor is fixed to the other side of the rack, a rotating seat is installed at the end, extending into the rack, of an output shaft of the motor, two clamps are symmetrically connected to the side wall of the rotating seat, a first guide rail is installed at the top end of the interior of the rack, a second guide rail is connected tothe bottom end of the interior of the rack, and a first hydraulic cylinder is installed at the bottom end of the first guide rail. Through the cooperation with a fixed frame, bolts, screw holes, limiting rings, a sliding groove and a sliding block, a polishing plate can be stably fixed to a second hydraulic rod, the polishing plate is prevented from deviating and loosening, the safety is improved,meanwhile, hard contact between the polishing plate and a workpiece can be reduced through springs, the polishing plate can be attached to the surface of the workpiece all the time, and the polishingeffect is improved.

The invention discloses a direct drive type stroke control pressurizing type hydraulic machine of an oil-less pump alternating current servo motor. The direct drive type stroke control pressurizing type hydraulic machine of the oil-less pump alternating current servo motor uses a ball screw transmission mechanism and a servo drive manner of an alternating current servo motor. The flying wheel transmission theory of a spiral pressure machine is applied to the hydraulic machine so as to achieve that the screw ball rotates to drive a screw nut to downwards move in a high speed. Fast downward movement and returning of a sliding block of the hydraulic machine are performed as the alternating current servo motor directly drives the ball screw. A main and vice composite pressurizing cylinder is used for achieving low-speed force adding pressing. Meanwhile, stamping drive force is reduced. A main cylinder body is integrated with the sliding block. Liquid can be rapidly filled and discharged as a small piston and a small piston cavity rapidly move upwards and downwards. A double-pull-rod structure is movably connected with the main cylinder body to achieve flexible forging and pressing and high-speed stroke returning movement of the sliding block. The transmission efficiency of the hydraulic machine is greatly improved, positioning precision of the sliding block is high, fast descending speed and stoke returning speed can reach 700mm/s, the technical requirements of low-speed forging and pressing and high-speed idle stroke are met, working characteristics of the pressure machine can be flexibly adjusted, energy is saved and consumption is reduced.

The invention discloses steel pipe inner wall derusting equipment based on combined operation of grinding and dedusting, and relates to the technical field of steel pipes machining equipment. The steel pipe inner wall derusting equipment based on the combined operation of grinding and dedusting comprises a workbench, supporting legs, standing plates, a positioning device, a steel pipe body, a grinding device and a dedusting device, the top ends of the two supporting legs are fixedly connected with the two ends of the bottom surface of the workbench respectively, and the bottom ends of the twostanding plates are fixedly connected with the two ends of the top surface of the workbench respectively. According to the steel pipe inner wall derusting equipment based on the combined operation ofgrinding and dedusting, through usage of and cooperation among the positioning device, the grinding device and the dedusting device, the steel pipe body can be quickly positioned firstly, then grinding and derusting of the inner wall of the steel pipe can be rapidly completed, and operation mode of the device is very simple, so that labor intensity of workers is greatly reduced and practicabilityof the derusting equipment is further improved.

The invention discloses a one-way device assembly, which comprises a gear component, a retaining ring, an oil seal press ring, a star wheel, a roller, a flat spring and a shell. The gear component comprises a gear and a bush, the bush is mounted on the inner wall of the gear and is selectively made of high-strength wear-resistant materials, a diamond concave pit is arranged on the inner surface of the bush, a graphite block with the shape identical to that of the diamond concave pit is mounted in the diamond concave pit, the oil seal press ring is selectively made of soft materials with high wear resistance and sealing property, the roller and the flat spring are respectively mounted in a curved-surface cavity of the star wheel, the curved-surface cavity of the star wheel is filled with a defined amount of lubricating grease, the oil seal press ring is laid on the star wheel, the gear component slips into the cavity of the star wheel via a surface of the roller, a corresponding concave and convex structure is arranged on a surface, which contacts with the star wheel, of the gear component, so that the star wheel is in close fit with the gear component, the retaining ring is mounted in a gear groove, the shell is sleeved on the retaining ring and tightly wraps the star wheel, and the retaining ring, the oil seal press ring and the star wheel are fixed without loosening. The one-way device assembly has the advantages of leakage resistance, high abrasion resistance, high quality and long service life.

The invention relates to the technical field of electronic equipment, and particularly relates to a metal bottom casing mobile terminal. The metal bottom casing mobile terminal comprises a metal bottom casing, a middle frame and a display screen assembly, wherein the middle frame is clamped at the upper part of the metal bottom casing; the display screen assembly is mounted in the middle frame; the metal bottom casing comprises a metal base and a plastic body filled in the metal base. Compared with the metal case made by profile aluminum block CNC (computer numerical control) in the prior art, the metal bottom casing structure formed by metal plate stamping and nano injection molding has the advantages that on the basis of keeping all the properties required by the mobile terminal, the production cost is greatly reduced, and the production efficiency is improved; moreover, due to the adoption of a metal frame and a structure of an injection molding piece embedded into the inner side of the metal frame, the intensity of the whole equipment is improved, and the production cost is reduced; moreover, the hard contact between the metal frame and a display screen assembly is buffered, so that the mobile terminal is higher in security, stability and reliability.

The invention provides a magnetic gear. The magnetic gear includes gear teeth and gear grooves. Each gear tooth includes a first contact surface, a second contact surface and a tooth tip. Each first contact surface is provided with a first magnetic source. Each second contact surface is provided with a second magnetic source. Each tooth tip is provided with a third magnetic source. Each gear groove is provided with a fourth magnetic source. The first magnetic sources and the second magnetic sources are used for generating repulsive force when two magnetic gears engage. The third magnetic sources and the fourth magnetic sources are used for generating attractive force when two magnetic gears engage with each other. The magnetic sources are arranged in the structure of the magnetic gear. Theforce of the magnetic sources facilitates the high-rotating speed drive of the magnetic gear. The magnetic sources arranged on the contact surfaces that the magnetic gears engage with each other areused for generating repulsive forces. The repulsive force among the magnetic sources helps to reduce the resistance and the wear of the magnetic gear and prolong the life of the magnetic gear. The magnetic sources arranged at the tooth tips and the gear grooves are used for generating attractive force, which facilitates the calibration of the engaging positions of the magnetic gear and improve theaccuracy of the drive of the magnetic gear.

The present disclosure provides an automobile fuel tank lock, comprising a manual unlocking structure that comprises: a push rod, comprising a cylindrical rod body, and a lock tongue connected to a top of the cylindrical rod body; a locating block connected to a bottom of the cylindrical rod body; a guiding ring provided at a bottom of the locating block, a top surface of the guiding ring being toothed; a guiding sleeve fixedly connected onto the base, comprising a cavity and a sidewall surrounding the cavity; the cylindrical rod body is rotatably provided in the cavity and can translate therein; a height of the locating rib is smaller than the depth of the deep guiding groove while larger than the depth of the shallow guiding groove; a spring provided on the base, and located between the locating block and the guiding ring. The present disclosure reduces the noise generated in the unlocking and locking process of the automobile fuel tank lock.

The invention discloses bionic feet of a quadruped robot. The bionic feet comprise a mounting plate, wherein front feet and rear feet which are symmetrically arranged are fixedly mounted on the two sides of the mounting plate; first movable arms and second movable arms are respectively and interactively mounted at the bottoms of the front feet and the rear feet; buffering mechanisms are arranged between the first movable arms and the front feet or between the second movable arms and the rear feet movably installed on the first movable arms and the second movable arms; a top block is fixedly installed at the top of the mounting plate; a vertical block is fixedly installed at the bottom of the mounting plate; a cavity is formed in the vertical block; a vertical shaft is rotationally installed at the bottom of the vertical block; and a rotary disc is fixedly installed at the bottom of the vertical shaft. According to the bionic feet of the quadruped robot, the walking function and the running function of the bionic feet are combined into a whole; the bionic feet are capable of walking and running, the application range of the bionic feet is expanded, a great progress is achieved in the bionic aspect of the quadruped robot, and a precious practice foundation is provided for development of the quadruped robot in the future.

The invention discloses a polishing device for rice processing. The polishing device comprises a machine body and a first supporting column. The machine body is fixed to the upper end of the first supporting column, a feeding tube is arranged at the upper end of the machine body in a penetrating mode, a second polishing roller is arranged on the lower part of the feed tube, a plurality of connecting rods are fixed to the outside of the second polishing roller, a plurality of convex grooves are formed in the inner wall of the machine body, the convex grooves are matched with the connecting rodsin inserting-connecting modes, connecting blocks are fixed to the ends, close to the insides of the convex grooves, of the connecting rods, and springs sleeving the outsides of the connecting rods are fixed between the connecting blocks and the inner walls of the convex grooves. The first polishing roller is driven to rotate by a motor to be matched with the second polishing roller to polish riceto be polished, because the outside of the second polishing roller is connected with the inner wall of the machine body in an inserted mode through the connecting rods, and through the cooperation ofthe springs, the connecting blocks and the inner walls of the convex grooves, the hard contact between the first polishing roller and the second polishing roller can be buffered during a polishing process, so that the rice is prevented from being crushed.

The invention discloses a double-glass photovoltaic module and a preparation method thereof. The photovoltaic module sequentially comprises front glass, a front packaging adhesive film, a battery string, a rear packaging adhesive film and back glass; the front glass and the back glass adopt double-sided coated glass; the preparation process of the double-sided coated glass comprises the following steps: S1, cutting glass into a required size, carrying out polishing, and carrying out cleaning to remove surface impurities; S2, printing glaze on the surface of the glass to form a glaze layer; S3, curing and cooling the glass; S4, turning over the glass, and then coating the glass with antireflection film coating liquid to form an antireflection film layer; and S5, tempering the glass, detecting a finished product, and packaging the glass. The preparation process of the double-glass photovoltaic module comprises the following steps that a lead hole is formed in the back glass, a front packaging adhesive film, a battery string, a rear packaging adhesive film and the back glass are sequentially laid on the front glass, the front packaging adhesive film and the rear packaging adhesive film are attached to the glaze layers on the front glass and the back glass respectively, positive and negative leads in the battery string are led out from the lead hole, and the double-glass photovoltaic module is manufactured through lamination.

The invention discloses an SMD IC welding and fixing device which comprises a base, two supports, a beam and a fixing piece. The two supports are oppositely arranged on the two ends of the base in parallel and are perpendicular to the base. The two ends of the beam are connected with the two supports respectively. The upper end of the fixing piece is connected with the beam and moves along the beam, the lower end of the fixing piece is opposite to the base, and the fixing piece is used for fixing the IC to a bonding pad of a PCB during SMD IC welding. Before welding, the SMD IC is fixed to the bonding pad of the PCB, the IC does not need to be fixed with human hands, one hand holds tin wires, the other hand holds an electric soldering iron to conduct welding, displacement cannot occur easily, welding can be achieved at a time even though an SMD IC has the very small lead pin pitch, and the yield is ensured.

The invention discloses a mechanism used for separating a product from a fixed mould and capable of limiting a slide block by adopting a perpendicular locking surface for the fixed mould and a deep rib. The mechanism comprises a mould cavity (1), an inclined guide post (3) arranged on the fixed mould (2) and the slide block (4) which is arranged on a movable mould in a sliding mode, wherein one end, close to the mould cavity (1), of the slide block (4) is a side wall, which corresponds to the mould cavity (1), of the deep rib, and is positioned above a position, which corresponds to the mouldcavity (1), of a product edge; height of one end, close to the mould cavity (1), of the slide block (4) is a value obtained by subtracting 1.0-3.5mm from height of the deep rib; a stroke limiting mechanism is arranged between the slide block (4) and the movable mould; an inclined hole (5) which is in sliding fit to the inclined guide post (3) is formed in the slide block (4); the inclined hole (5)is greater than the outer diameter of the inclined guide post (3); one end, away from the mould cavity (1), of the slide block is equipped with an inclined surface (6); and a pressing surface (7) which presses the slide block (4) when the pressing surface is matched with the inclined surface (6) for closing the mould is arranged on the fixed mould (2). Compared with the prior art, the mechanism has characteristics of being simple in structure, convenient to maintain and repair, and capable of increasing the product yield.

The invention provides an energy-saving and emission-reducing extruder tail gas treatment device, which comprises a box body, an exhaust port, a spring, a vibration motor, a tail gas treatment mechanism, a tail gas inlet port, a support plate, a slag guiding port, a slag discharging box, a control cabinet, an oxygen sensor and an acousto-optic alarm. With the arrangement of an ozone generator, a first UV lamp and a second UV lamp, high energy and high ozone UV beams are utilized to illuminate exhaust gas such that a molecular chain of an organic or inorganic high-molecular compound reacts withozone under the illumination of high energy UV beams to generate a low molecular compound. With the arrangement of the slag guiding port and the slag discharging box, tail gas dust particles fallingby vibration are convenient to guide into the slag discharging box through the slag guiding port, and the tail gas dust particles are treated together so as to effectively improve the environmental protection.

The invention discloses a solid hydrogen storage and desorption device and method based on temperature feedback regulation. During hydrogen storage, cooling liquid is injected into a liquid guide pipe, the cooling liquid circularly flows in the liquid guide pipe through a pump, a hydrogen storage material in a hydrogen storage bed body is cooled, and meanwhile, hydrogen is filled into a hydrogen storage tank body; hydrogen enters the hydrogen storage tank body after being filtered, and hydrogen storage is achieved at low temperature; during hydrogen desorption, the temperature in the hydrogen storage material is collected through the wireless temperature sensor, the hydrogen desorption speed and the hydrogen desorption temperature are determined according to needs, the temperature and the flowing speed of liquid in the liquid guide pipe are determined, and heating hydrogen desorption is achieved.

The invention provides a multi-point support construction method for a special-shaped irregular steel structure, and relates to the technical field of steel structure construction. The method particularly comprises the following steps of S1, steel structure splicing, namely performing segmented division on a steel structure into a plurality of sections of arc-shaped beams of different structures according to a design drawing, setting out, cutting and processing the arc-shaped beams to obtain arc-shaped beams, splicing the multiple sections of arc-shaped beams of different structures end to endin sequence, and firmly connecting every two adjacent arc-shaped beams through welding to obtain the special-shaped irregular steel structure. The special-shaped irregular steel structure is placed on a special-shaped irregular steel structure multi-point supporting construction device, the special-shaped irregular steel structure is clamped through the construction device, the special-shaped irregular steel structure is lifted through the construction device, the special-shaped irregular steel structure is put on supporting objects at the two sides, and the danger of manually holding the special-shaped irregular steel structure to climb up and down is avoided.

The invention provides an ejector pin mechanism and crystal ejection equipment. The ejector pin mechanism comprises a crystal ejection pin; a mounting hole is formed in the thimble sleeve along the axial direction of the thimble sleeve; the ejector pin sleeve is installed in the installation hole in a sliding mode, an inserting and penetrating part is arranged on the ejector pin sleeve, and the inserting and penetrating part is used for being unfolded to clamp the ejector pin when the ejector pin penetrates through the ejector pin sleeve and is used for being folded when the ejector pin is pulled out; one end of the elastic piece abuts against the ejector pin sleeve, and the other end abuts against the ejector pin sleeve. The crystal ejecting equipment comprises the ejector pin mechanism and the fine adjustment mechanism. According to the ejector pin mechanism, hard contact between the ejector pin and the chip can be reduced by arranging the elastic piece. When the ejector pin mechanism is replaced, the ejector pin can be directly replaced by an external tool or manual work, compared with the whole ejector pin mechanism, the ejector pin is easier to replace, and the replacement efficiency of the ejector pin is improved. And meanwhile, the ejector pin mechanism does not need to be integrally replaced, so that cost is saved.

The invention belongs to the technical field of telephone receiver wire production, and discloses equipment for telephone receiver wire rolling. The equipment for telephone receiver wire rolling comprises a rack, a rolling rod feeding and transferring device, a rolling rod clamping and rotating device, a telephone receiver wire feeding, clamping and cutting device and a discharging and conveying device, wherein the rolling rod feeding and transferring device, the rolling rod clamping and rotating device, the telephone receiver wire feeding, clamping and cutting device and the discharging and conveying device are arranged on the rack, the rolling rod feeding and transferring device is used for conveying rolling rod feeding materials to the rolling rod clamping and rotating device, and the rolling rod clamping and rotating device is used for clamping the two ends of a rolling rod and driving the rolling rod to rotate during rolling. The equipment has the advantages that the feeding stability and the transferring accuracy of the rolling rod are improved, the clamping stability of the rolling rod and the high efficiency of rotation of the rolling rod are improved, the rolling stabilityand the rolling efficiency of a telephone receiver wire are improved, and the smoothness of a whole production line and the rolling quality of the telephone receiver wire are improved.

The invention discloses a combined bridge guardrail, which comprises a bridge plate, columns are arranged at equal distances from the front and the rear of the upper surface of the bridge plate, a cross bar is arranged between two adjacent columns, and the bridge plate Side plates are built on the front and back of the bridge plate, and the third through holes are opened equidistantly from left to right on the side plate, and the front and rear parts of the upper surface of the bridge plate are equally spaced. Each inserting block is horizontally opened with a second through hole, and the bottom end of the column is welded with a positioning plate. In the combined bridge guardrail, the positioning plate is connected to the bridge plate through the third bolt, and the cross bar is plugged into the jacks on both sides of the column. It is easy to disassemble, easy to maintain, and firmly fixed. The wire rope is installed with a ring, which has good cushioning performance. The bottom end of the column can be fixed by using the plug-in block on the bridge plate and the slot on the column, and the fixation is relatively firm.

The invention belongs to the technical field of telephone receiver line automatic production, in particular to a telephone receiver line and rolling rod rolling system and method. The telephone receiver line and rolling rod rolling system comprises a rolling rod clamping and rotating device and a telephone receiver line feeding, clamping and cutting device, wherein the rolling rod clamping and rotating device comprises a U-shaped support, a rolling rod rotating motor, a conveying belt assembly, a first rolling rod clamping cylinder and a second rolling rod clamping cylinder; the U-shaped support is arranged on a frame and located on the front side of a rolling rod feeding transfer device; the opening of the U-shaped support faces forwards; the rolling rod rotating motor is arranged on theframe through a rotating motor support, and located on the left side of the U-shaped support; one end of the conveying belt assembly is arranged on a moving part of the rolling rod rotating motor in asleeving mode; the other end of the conveying belt assembly is matched with the first rolling rod clamping cylinder; the first rolling rod clamping cylinder is arranged in the middle of the left sideof the U-shaped support; and the second rolling rod clamping cylinder is arranged in the middle of the right side of the U-shaped support. The telephone receiver line and rolling rod rolling system and method have the advantages that the clamping stability of a rolling rod and the rotation effectiveness of the rolling rod are improved.

The invention discloses a guardrail device for a municipal bridge. The guardrail device for the municipal bridge is characterized by comprising supporting uprights positioned at the two ends; concretepiles integrally connected with the bridge are arranged at the lower ends of the supporting uprights; an upwarp elastic iron wire is arranged between the supporting uprights; connecting columns, which penetrate out of one sides of the concrete piles from the supporting uprights, are fixedly connected to middle parts, inserted into the supporting uprights, of the upwarp elastic iron wire; extrusion springs sleeve the connecting columns; propping discs, whose diameters are larger than the diameters of the connecting columns and which prop against the lower ends of the extrusion springs, are arranged at the bottoms of the connecting columns; cover sleeves sleeve the extrusion springs; the diameters of openings at the upper ends of the cover sleeves are less than those of the propping discs and larger than those of the connecting columns; and hinging columns transversely inserted into the concrete piles to rotate are fixedly connected to the lower ends of the cover sleeves. According to the guardrail device for the municipal bridge, hard contact between the guardrail device and a force applying object is reduced to obviously improve the buffering performance of the guardrail device.

The invention discloses a pot bottom ash collection device for production of a traditional Chinese medicine and relates to the technical field of pharmaceutical machinery. The pot bottom ash collection device for production of the traditional Chinese medicine comprises an operation table. Support seats are welded to the two ends of the bottom face of the operation table. A bucket body is welded tothe center of the top face of the operation table. A locating plate is fixedly connected to the top of the bucket body. The center of the top face of the locating plate is provided with a locating hole. A pot body is embedded in the locating hole. Buffer devices are arranged in the two ends of the locating plate and at the embedded two ends of the locating hole correspondingly. According to the pot bottom ash collection device for production of the traditional Chinese medicine, through matched use of the buffer devices, a locating device, a lifting device, an ash removal device and an ash pumping device, a pot bottom ash cleaning device can be used more conveniently, meanwhile, pot bottom ash on an iron pot can be collected conveniently, in this way, working efficiency of cleaning of thepot bottom ash is further improved, and thus subsequent production and processing of the traditional Chinese medicine can be convenient.

The invention relates to the technical field of oxygen bottle transportation, and discloses a carrying bracket with adjustable turnover universal wheels for a medical oxygen bottle. The carrying bracket comprises a chassis, a transfer device is arranged at the bottom of the chassis, the transfer device comprises support columns and four groups of stabilizing plates, the stabilizing plates are distributed in an annular array state from outside to inside, and the universal wheels are arranged at the bottoms of the stabilizing plates. According to the carrying bracket with the the adjustable turnover universal wheels for the medical oxygen bottle, by arranging the transfer device, when the chassis and the oxygen bottle are pushed to be transferred on the ground as a whole, and uneven pits exist on the ground, the four groups of universal wheels distributed at the bottom of the stabilizing plates in an annular array state increase the contact area with the ground, the universal wheels located on the uneven ground do not make direct extrusion contact with the ground, the universal wheels located on the plane make normal contact with the ground, and the transferring effect on the chassisand the oxygen bottle is achieved, so that the efficiency of transferring and transporting the oxygen bottle is improved.

The invention discloses a surface treating machine for manufactured and molded home decoration integrated aluminum and magnesium pinch plate and relates to the technical field of panel processing. Thesurface treating machine comprises a bottom supporting plate and a square rack. The bottom supporting plate is a square plate horizontally fixed to the ground, a supporting plate vertical to the ground is fixed to the top end of the bottom supporting plate, a top supporting plate horizontally arranged is fixed to the top end of the supporting plate, a hydraulic cylinder is fixed to the top end ofthe top supporting plate, a piston rod is arranged at the bottom end of the hydraulic cylinder, a piston rod at the bottom end of the hydraulic cylinder penetrates the supporting plate to stretch downward, a center rack horizontally arranged is fixed to the bottom end of the piston rod, and the center rack is of a frustum of rectangular pyramid of a rectangular structure. A sponge pad of a squarestructure is arranged at the bottom end of a pressing plate and has a relatively strong siphon characteristic. Water drops and dust attached to the surface of a film are adsorbed by the sponge pad, so that the sanitation of the surface of the film is improved.

The invention discloses a shielding electric fan-shaped door. The shielding electric fan-shaped door comprises a door frame and a door body, wherein the right side of the door body is hinged to the door frame, the left side of the door body is rotationally connected with a rotating shaft, and the two ends of the rotating shaft extend out of the door body and are connected with an outer handle and an inner handle correspondingly. According to the shielding electric fan-shaped door, a spur gear and double spur racks are adopted for reciprocating linear conduction, a needle bearing and a linear bearing which are high in machining precision and stable in performance are matched for guiding, mechanical friction is reduced, hard contact is reduced, all the adopted mechanisms are externally installed, when power is suddenly cut or a motor breaks down, the shielding door can be directly opened through manual operation after an emergency stop button is pressed down, the safety of a user is guaranteed, the structure that a conical knife and a L-shaped knife are matched with a beryllium copper reed is adopted, the conical knife can solve the precision problem in the production and machining process, the L-shaped knife plays a re-shielding effect, errors generated in the production and machining process can be compensated through the conical knife inserting structure on the door, the production and machining errors are reduced, and therefore the shielding performance is stable and superior.

The invention aims to provide the circulating type centrifugal oil washing machine which is provided with the heating device, so that the temperature of thrown-out oil can be kept, the fluidity of the oil is ensured, and the oil is collected and treated. Comprising a rack, an oil washing barrel shell, a motor, a centrifugal barrel and a transmission mechanism, and further comprises an oil blocking barrel and a heating mechanism, the periphery of the oil blocking barrel is fixed to the inner wall of the oil washing barrel shell through a plurality of tension springs, a discharging opening is formed in the upper end of the oil blocking barrel, and a mounting hole allowing the transmission mechanism to penetrate through is formed in the bottom of the oil blocking barrel; the heating mechanism comprises a spiral coil pipe, a liquid inlet pipe, a liquid outlet pipe, a heating pump and heat conduction oil, the spiral coil pipe is tightly attached to the outer wall of the oil blocking barrel, the upper end of the spiral coil pipe is connected with the liquid inlet pipe, the lower end of the spiral coil pipe is connected with the liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe are connected with the output end and the input end of the heating pump respectively; the spiral coil pipe, the liquid inlet pipe and the liquid outlet pipe are filled with heat conduction oil.