466results about How to "Guaranteed contact area" patented technology

The invention discloses a flexible circuit board convenient for efficient heat dissipation and mainly used in a high-power LED illumination array, belonging to the semiconductor illumination technical field. The flexible circuit board of an LED illumination array is characterized in that: the circuit board is provided with a flexible substrate, a connection circuit, an insulating film-covered layer, a heat-conducting rubber pad and an LED light source; the connection circuit is arranged on the surface of the flexible substrate; the surfaces of the flexible substrate and the connection circuit are covered with the insulating film-covered layer to form a circuit board module; the LED light source is packaged inside the circuit board module in an array mode; the bottom surface of the flexible substrate is adhered to the surface of the heat-conducting rubber pad. Therefore, the entire flexible circuit board module has certain elasticity and flexibility and can adapt to bending, twisting and crimp deformation of certain strength; moreover, the invention can also be arranged on non-flat surfaces not more than a certain curvature such as a cylindrical surface or a spherical surface. The invention has wider application scope, better heat dissipation performance, less production cost, convenient installation and substantially increased production efficiency.

A reinforcing bar binding machine is provided with: a main sleeve (11) having a tip end on which a hook (10) is pivotally mounted; a tip end shaft (12) fitted in an inside of the main sleeve (11); a spiral screw groove (14) formed on the tip end shaft (12); a fitting opening (13) that penetrates from an outside to the inside of the main sleeve (11); a key (15) fitted in the fitting opening (13) and brought in mash engagement with the screw groove (14); a short sleeve (16) provided on an outer periphery of the main sleeve (11) and covering the key (15); and an engaging means (33,34) formed on the short sleeve (16) and controlling a rotation of the main sleeve (11).

The invention provides a copper electrolysis system which comprises an electrolysis tank, a cooling device, a driving device, an electrolyte storage tank and a conducting bar, wherein a liquid supply device is arranged on an inside wall of the electrolysis tank; an outlet of the driving device is connected with an inlet of the cooling device; the outlet of the cooling device is connected with a liquid supply pipeline of the liquid supply device; an electrolyte draining port of the electrolysis tank is connected with the inlet of the electrolyte storage tank; the outlet of the electrolyte storage tank is connected with the inlet of the driving device; the conducting bar is arranged at an upper edge of the electrolysis tank; and a conductive rod of a cathode and a hanging lug of an anode are respectively lapped with the conducting bar. Due to the cooperative use of the electrolysis tank, the cooling device, the driving device and the conducting bar, the copper electrolysis system provided by the invention causes the current density to be higher and the electrolysis tank voltage to be lower during a copper electrolysis, so that the yield of copper is higher and the energy consumption is lower.

A heat exchanger includes a heat transfer tube group in which a plurality of first heat transfer tubes (3) through which a first fluid flows and a plurality of second heat transfer tubes (4) through which a second fluid that exchanges heat with the first fluid flows are arranged alternately while being in contact with each other. The heat transfer tube group is formed in a spiral shape by being wound in X direction perpendicular to Y direction in which the first heat transfer tubes (3) and the second heat transfer tubes (4) are arranged. A plurality of concave portions (3a) are provided on both sides, in the X direction, of an outer circumferential surface (31) of each of the first heat transfer tubes (3), along an extending direction of the first heat transfer tube (3). The plurality of concave portions (3a) form convex portions on an inner circumferential surface of the first heat transfer tube (3).

The invention discloses a flat pipe heat exchanger. The flat pipe heat exchanger comprises fins provided with pipe channel slots, and flat pipes which are fixedly connected with the fins; each pipe channel slot is U-shaped; the pipe channel slots are provided with flangings; and the side wall of the flat pipe is provided with fixed inclined sides corresponding to the flangings. The invention also discloses an assembly method of the flat pipe heat exchanger. The method comprises the following steps of: 1) fixing the flat pipes at intervals corresponding to the pipe channel slots; 2) horizontally pushing the fins into the flat pipes; 3) clamping the fixed inclined sides by using a clamping device to ensure that the fixed inclined sides are tightly connected with the flangings; 4) continuously inserting the next fin; and 5) connecting two ends of the flat pipes and an inlet collecting pipe and an outlet collecting pipe respectively to finish assembly. The flat pipes are inserted in the horizontal direction, the travel of the flat pipes are shortened, one fixed inclined side is formed on the surface of each flat pipe aiming at each fin, the fixed inclined sides can clamp the flangings of the fins by using the clamp device to ensure the contact areas between the fixed inclined sides and the flangings, high and uniform heat radiation effect is achieved, and product performance is improved.

The invention belongs to the field of evaporative heat exchange equipment, and relates to a reinforcing heat transfer method for an evaporative heat exchanger. Gaseous working media which are subjected to heat exchange by a coil tube flow into an upper connector of the coil tube, condensed and cooled working media outflow from a lower connector, and a reinforcing heat transfer component is additionally arranged in tube bundles of the coil tube of part or all of tube passes to improve the heat transfer efficiency. In the coil tube component of the invention, the coil tube is subjected to the processing of an integrally-finned expansion heat exchange surface partially or completely according to the properties of the condensed or cooled working media and the requirement of tube resistance; fins are machined by made-to-measure dies independently, and structures and shapes of the fins can be adjusted; the fins are arranged in a direct-insert mode, are convenient, flexible and have low manufacturing cost; the support action supplied by a core tube can ensure the contact area between the fins and an outer tube fully, and reduce the contact heat resistance of the internal fins furthest. The coil tube component adopting the integrally-finned reinforcing heat transfer component has the advantages of occupied space saving, large heat exchange rate of unit volume, high heat exchange efficiency and small appearance dimensions of a complete machine.

Ascooter-type vehicle includes a pillion passenger steps supported by a body frame so as to be movable between an extended position where the pillion passenger step projects from a seat side cover cover and a stored position where the pillion passenger step is folded toward the body cover. The present invention aims to provide a scooter-type vehicle where a part of a body cover on the periphery of a pillion passenger step can easily be replaced at low cost. The body cover includes a floor cover which covers the low floor portion from above and from both sides and a seat side cover which covers from the side a rear portion of the body frame below the riding seat. The floor cover is provided with a recessed portion for storing the pillion passenger step in its stored position, and a seat lower cover formed separately from the floor cover and the seat side cover is disposed between the floor cover and the seat side cover so as to be tilted rearward upwardly along an upper edge of the storing recessed portion as viewed from the side.

The invention aims to provide a vacuum cover for a storage container, wherein the vacuum cover for the storage container is simple in structure and capable of conducting immediate vacuumizing or immediate pressure relief on a wide-mouth storage container. The vacuum cover for the storage container comprises a cover body. The portion, close to the edge, on the lower side of the cover body is provided with a groove matched with a mouth of the storage container in a surrounding manner. A first seal ring is arranged in the groove. The cover body is further provided with a cavity. The cavity is provided with a vacuumizing pressing block in a matched manner through a first reset spring. The vacuumizing pressing block and the cavity cooperate and form a vacuumizing chamber. The bottom of the cavity is provided with a vacuumizing opening communicating with an inner cavity of the storage container. The vacuumizing opening is provided with a one-way valve in a matched manner. The vacuumizing pressing block is pressed circularly, and then the inner cavity of the storage container is vacuumized. The cover body is further provided with a pressure relief device. The outer end of the pressure relief device is exposed out of the cover body. The pressure relief device is pressed, and then the pressure in the storage container recovers to the normal pressure. The vacuum cover for the storage container is applied to the field of vacuum devices.

The invention discloses a sodium ion battery composite positive material and a preparation method. The sodium ion battery composite positive material is a maize-cob-shaped FePO4 and multiwall carbon nanotube composite material which is formed by loading a spherical amorphous FePO4 nano material on the surfaces of multiwall carbon nanotubes through non-covalent bonds. The preparation method comprises the steps of preparing a water-in-oil micro-emulsion from n-butyl alcohol, triton X-100, cyclohexane and deionized water, uniformly dispersing the multiwall carbon nanotubes in the oil-in-water micro-emulsion with Fe(NO3)3.9H2O to obtain a micro-emulsion containing the multiwall nanotubes and Fe(NO3)3.9H2O, adding an oil-in-water micro-emulsion with NH4H2PO4 into the obtained micro-emulsion to form the sodium ion battery composite positive material with good rate performance and high discharging specific capacity in a heterogeneous nucleation manner.

An antibacterial material containing Zn and molecular sieve for clothes, building materials, etc is prepared from Zn contained soluble salt through dissolving in distilled water, adding molecular sieve, reflux stirring at 50-60 rpm for 0.5-6 hrs, cooling, vacuum filter, flushing with distilled water 4-6 times, and natural drying in air. Its advantages are high exchange capacity, high adsorbility, high structure stability and slow release of ions.

The invention relates to a vehicle transmission shaft straightening device, which comprises a base, guide rails, a sliding support mechanism, a measurement mechanism, a stand column mechanism and a straightening mechanism, wherein the guide rails are arranged on the base, the sliding support mechanism is connected with the guide rails in a sliding mode, the measurement mechanism is arranged on the sliding support mechanism, the stand column mechanism is arranged on the base, and is arranged on one side of the guide rails, the straightening mechanism is arranged on the stand column mechanism, a transmission shaft is arranged on the sliding support mechanism, the straightening mechanism downwardly moves to a position where is be about to contact with the upper surface of the transmission shaft, the measurement mechanism is contacted with the lower surface of the transmission shaft, and rotates the transmission shaft and pushes the sliding support mechanism, and the straightening mechanism straightens pressure of the transmission shaft through reading of the measurement mechanism. Compared with the prior art, the vehicle transmission shaft straightening device has the advantages that the vehicle transmission shaft straightening device improves straightening precision, and is simple in structure and convenient to operate and the like.

The invention provides a CARP optimizing and cleaning device, and relates to the field of machine manufacturing. The CARP optimizing and cleaning device comprises a polyurethane blade (1) and an aluminum alloy insert (2). The polyurethane blade (1) is embedded in the aluminum alloy insert (2). An oblique contact face (1-1) is arranged on the inner side face of the upper end of the polyurethane blade (1), and the included angle alpha between the contact face (1-1) and the perpendicular line is 20-30 degrees. According to the friction coefficient between the blade and a belt, material property of the CARP optimizing and cleaning device and characters of conveyed materials, the shape and size of the blade are designed through difference, the contact area and sweeping angle of a cleaner are guaranteed, materials which fall down on the belt can be completely eliminated, the blade is made of the polyurethane material, so that wear resistance of the blade is ensured, and the service life of the blade is guaranteed.

The invention relates to a cable winding device, in particular to an explosion-proof cable drum, which solves the problem of burning out of slip rings due to arcing caused by the fact that a brush is easy to wear and generate gaps or a brush clamping device is aged and loosened along with time in a collecting slip ring of the prior cable drum. The explosion-proof cable drum is provided with a drum shell and the collecting slip ring, wherein the collecting slip ring is provided with two relatively rotational slip rings, and one is a static slip ring and the other is a movable slip ring; and the static slip ring is in end face contact with the movable slip ring. The explosion-proof cable drum can safely convert rotary current into static current. The explosion-proof cable drum is taken as a changeover gear of main voltage source input, safely converts the rotary current which is inputted by the exterior of the drum into the relatively static current through relative rotation of the movable slip ring and the static slip ring, and leads the static current into an electric cabinet to supply power to the whole machine. The explosion-proof cable drum adopts a novel slip ring group, guarantees enough contact area and compression strength, and better transfers current.

The invention relates to an all-weather photocatalytic air purification system which is composed of an energy supply system and a purification system, wherein a solar cell panel in the energy supply system is connected with a storage battery and is connected with the purification system through a storage battery power supply and transmission line; a solar water heating glass tube is distributed on the surface of the solar cell panel; a water inlet of the solar water heating glass tube is connected with a water outlet of purification system cooling water; the center of an air purifier box in the purification system is provided with a purifier air purification reaction channel; a titanium wire mesh fixer is fixed in the purifier air purification reaction channel; a solid TiO2 titanium wire mesh is fixed on the titanium wire mesh fixer; a plurality of ultraviolet lamps are arranged at the periphery of the purifier reaction channel; and ventilating fans are respectively arranged above and below the purifier air purification reaction channel. The all-weather photocatalytic air purification system can be used in public places such as super markets, factories, schools, hospitals and the like; and meanwhile, the all-weather photocatalytic air purification system can be conveniently mounted on the roof or balcony of a house and be used as a practical multifunctional air purifier combining the three functions of air purification, hot water supply and solar power generation.

The invention discloses an external pipeline paving device of large-scale air purifying equipment. The device comprises a fixing cover, horizontal positioning frames and a vertical positioning frame;the vertical positioning frame comprises a U-shaped bottom plate, transverse sliding rods and supporting brackets, the front end and the rear end of the transverse sliding rods are provided with firstthreaded sections and second threaded sections, and the thread directions of the first thread sections and the second thread sections are opposite, and the first threaded sections and the second threaded sections are provided with supporting brackets. According to the device, the external pipeline is integrally supported and fixed through the paving device, so that the overall stability of the pipeline is ensured, then the paving device and the equipment are connected and fixed, the operation difficulty of directly paving the pipeline on the surface of the equipment is reduced, and the pipeline and the inner pipeline in the equipment can be conveniently connected and fixed, and the tight performance after the pipeline is in butt joint is improved, and the multiple parts of the pipeline can be simultaneously supported and positioned through the paving device, the structure stability of the external pipeline is effectively ensured, and the effects of damping and noise reducing are achieved.

The invention belongs to a crawler type engineering vehicle thrust wheel device, in particular to a sliding type damping buffering thrust wheel device which solves the problem that the prior crawler type engineering vehicle thrust wheel device uses rigid connections, so a traveling mechanism produces dramatic vibration and impact easily, thereby influencing the service life of vehicle components and the comfort of driving and also being likely to cause the hazard of the digression of the crawler . The sliding type damping buffering thrust wheel device comprises a thrust wheel, a support frame and a suspension mechanism. A viscoelastic vibration damper is installed between the support frame and a trolley frame. The suspension mechanism is a slide rod guideway type structure. The sliding type damping buffering thrust wheel device has the beneficial effects as follows: 1. the sliding type damping buffering thrust wheel device ensures that contact area of the crawler when traveling and reduces the vibration and the impact, the service life can be 8,000 to 10,000 hours, and the vehicle can obtain large traction and avoids the hazard of the digression of the crawler; 2. the sliding type damping buffering thrust wheel device improves the comfort for driving the vehicle, and the vibration measured at the position of a driving seat is reduced by 7 percent; and 3. the vehicle operation productivity is increased by 10 percent.

The invention provides an inner decoration piece fixing device which is characterized by comprising a support plate and at least two abutting pressing devices. Each abutting pressing device comprises a base, a press head and a handle, one end of the press head is installed on the base in a rotating mode, and the handle is connected with the press head and is installed on the base in a rotating mode. The handles can drive the press heads to rotate in the identical direction or in the reverse direction to enable the other ends of the press heads to press inner decoration pieces in an abutting mode. The support plate is provided for the inner decoration pieces to be welded, the inner decoration pieces are fixed through the abutting pressing devices and are accurately aligned, welding accuracy and inner decoration piece stability are improved, welding shortcomings in the traditional welding process are overcome, the welding quality is greatly improved, the inner decoration piece welding safety coefficients are improved, and the danger that an operator is scalded by welding materials is removed.