39results about How to "Fall off completely" patented technology

The invention relates to a technology for high-efficiently recycling soldering tin of discarded printed circuit boards, and a device. In a sealed system, in which liquid heat conducting medium exists, discarded printed circuit boards to be processed and welded with electronic parts are put in a swivel which is provided with a plurality of filtering holes and immersed in the heat conducting medium, the temperature is risen until the soldering tin is melted, after the temperature is constant, the swivel is rotated to centrifugally separate solid and liquid, the soldering tin leaks from the filtering holes, deposits at the bottom and is cooled into ingot, and the electronic parts are separated from the discarded printed circuit boards correspondingly. The method for recycling the soldering tin of discarded printed circuit boards has no environmental pollution, low energy consumption and high efficiency, and can create good condition for high-efficiently recycling other metals.

The invention relates to a dust cleaning device for a belt conveyor belt surface. The dust cleaning device is characterized by mainly comprising a dust collection hood, a dust blowing device and a negative pressure dust collection device, wherein the dust collection hood is installed below a conveyor belt at the discharge end of a belt conveyor, spring telescopic rods are installed between the dust collection hood and a supporting part, the upper end of the dust collection hood is connected with the dust blowing device in the direction of the cross section of the belt, a conical dust collection chamber is arranged at the lower end of the dust collection hood, the dust collection chamber is connected with the negative pressure dust collection device, and the amount of negative pressure of the negative pressure dust collection device is larger than the discharge of compressed air of the dust blowing device. Positive pressure is provided by the compressed air to blow off dust adhering to the belt or a part in a belt crack, dust is then absorbed through the negative pressure, accordingly, air under positive pressure and negative pressure is adopted as power to blow the dust away from the belt, the dust is blown off more thoroughly, and no dead angle is left during dust blowing; meanwhile, the spring telescopic rods can maintain good sealing performance between the dust collection hood and the belt, so that the dust collection effect is guaranteed.

The invention relates to the technical field of metal surface treatment, in particular to a metal copper surface oxide skin treatment process. A treatment device utilized in the metal copper surface oxide skin treatment process comprises a base, a ring cylinder, a clamping block, a cutter and a controller, wherein the ring cylinder is fixedly connected with the upper end of the base; the axis of the ring cylinder is parallel to the upper end of the base; a strip-shaped groove is formed in the inner wall of the ring cylinder; the cutter is slidably connected into the strip-shaped groove; and No.1 springs are also arranged in the strip-shaped groove. According to the treatment device utilized in the metal copper surface oxide skin treatment process, metal copper is driven by a No.1 motor toslide along a No.1 sliding rod and driven by a No.2 second motor to rotate; through the cooperation between the metal copper sliding and rotating processes, oxide skin on the surface of the metal copper falls off faster and more thoroughly under the scraping action of the cutter; therefore, the metal copper surface oxide skin removing effect is improved, and then the quality of the metal copper isimproved; and meanwhile, the metal copper surface oxide skin treatment process has the advantages of being environmentally friendly and free of pollution.

The invention relates to the technical field of river channel cleanout and sediment treatment and discloses an environment-friendly river sediment dehydration drying boat which comprises a boat body and a power system, wherein the power system is arranged on the boat body and is used for providing power to the sediment dehydration drying boat; a sediment/garbage separation device, a sediment concentration tank, a sediment conveying pump, a belt type sediment filter press and a filtering tank are sequentially arranged and connected with the boat body according to a sediment treatment sequence;the sediment/garbage separation device is positioned above the sediment concentration tank; the belt type sediment filter press is positioned above the filtering tank. According to the boat, integralon-line treatment of rapid dehydration, solidification and residual water draining treatment on river sediment can be achieved. Therefore, the purposes of high efficiency and harmless river cleanout and reduction of residual water draining treatment can be achieved.

An easily removed surficial coated layer of the metallic product to be cold-extruded is prepared from gypsum, machine oil and lubricating grease in weight ratio of 1:(3-10): (0.1-0.8) through mixing. The thickness of coated layer is 100-250 microns.

The invention provides an electroosmosis high-voltage sludge elastic pressing filter plate which comprises a filter plate body and a filter frame.A spring enabling the filter frame and the filter plate body to stretch and contract is arranged between the filter frame and the filter plate body, a through hole is formed in the upper portion of a cross plate of the filter plate body, a U-shaped opening is formed in the upper portion of the filter frame, an opening of the U-shaped opening is communicated with a concaved cavity in the front face of the filter plate body, the center of the U-shaped opening and the center of the through hole of the filter plate body coincide, and the U-shaped opening and the through hole form a sludge feeding hole together.Sludge is conveyed into a cavity of a filter chamber through a pipeline externally connected with the feeding hole and a screw pump; by means of the feeding mode, the sludge feeding speed is high, the sludge enters the filter chamber in a free falling state, and the filter chamber can be easily filled; after the filter chamber is filled; after the filter chamber is filled, the cathode and the anode are charged, the filter chamber is compressed, and thus efficient dehydration of sludge can be achieved.

The invention discloses an environment-friendly organic dry film stripping liquid, which comprises the following raw materials in parts by volume: 5-30 parts of organic base, 5-20 parts of an organicsolvent, 5-15 parts of an inhibitor, 0.1-5 parts of a corrosion inhibitor and 30-85 parts of deionized water. The circuit board of the invention is used for treating fine lines: 1. the dry film fallsoff completely, and there is no residual ''pinching film'' phenomenon; 2. the invention doe not attack a tin plating layer; 3. the dry film is broken into small diaphragms so as not to cause blockageto a pipeline; and 4. toxicity is low and wastewater is relatively easy to treat.

The invention discloses a device for centrifugal recovery of saline water after concentration and crystallization. The device comprises a concentrating heat exchange tank and a crystalizing tank, wherein the concentrating heat exchange tank is of a jacket long cylindrical structure composed of an inner cylinder and an outer cylinder, and is arranged longitudinally; a rotating shaft longitudinally penetrates through the inner cylinder; a fiber brush bundle is fixed on the brush hair drum of the rotating shaft; the inner cylinder is connected with a cyclone separator via an air pipe and an exhaust fan and then is connected back to the inner cylinder to form an evaporation loop; a jacket is connected with a water return pipe, the heat exchange tube array of the waste heat water tank of a boiler, a circulating water pump and a water inlet pipe to form a heating circulation loop; the jacket is connected with a water hammer vibrator composed of a crank connecting rod and a piston; a to-be-concentrated solution inlet pipe is arranged above the inner cylinder, and the crystalizing tank is connected under the inner cylinder by use of an inclined bottom groove and a runner; the tapered bottom of the crystalizing tank is connected with a screw centrifugal separator and the inner cylinder by use of a mortar pump; the centrifugal separator is provided with a centrifugate temporary storage tank and a crystal tank. The device is unique and ingenious in design, high in practicability; the device for concentrating and crystalizing the saline water for centrifugal recovery is complete in functions and wide in application prospect.

The invention discloses a dry ice cleaning refrigerating system. The dry ice cleaning refrigerating system comprises a refrigerating system formed by a refrigeration compressor, an evaporator and a condenser. The condenser and the evaporator are connected with a dry ice particle heat exchange pipe inner inlet check valve introducing high-pressure dry ice particles into heat exchange pipes and a dry ice particle shell tube check valve introducing the high-pressure dry ice particles into a heat exchange pipe shell tube correspondingly. The condenser and the evaporator are connected with a shelltube cleaning blow-down valve and a heat exchange pipe inner cleaning blow-down valve correspondingly. The dry ice cleaning refrigerating system can inject dry ice particles into the heat exchange pipes of the evaporator and the condenser and to the positions between shells and tubes through high-pressure air to enable lubricating oil films and dirt to shrink, get loose, gasify and expand, so thatthe lubricating oil films and the dirt fall off from the surface of the heat exchanger quickly and thoroughly. The performance of the refrigerating system is improved.

The invention provides a pulse magnetizing crawler walking mechanism and a wall-climbing robot, which belong to the technical field of ship cleaning. The technical problems that a crawler walking mechanism is complex in structure, and the rust removal efficiency of a robot is low are solved. The pulse magnetizing crawler walking mechanism comprises a support, guide wheels located at the two ends of the support and a crawler arranged on the two guide wheels in a sleeving mode, a plurality of soft magnetic blocks are arranged on the inner side of the crawler, a plurality of electromagnets are arranged on the support, and a power supply and a control circuit are further arranged on the support. The wall-climbing robot comprises two pulse magnetizing crawler walking mechanisms which are arranged in parallel at intervals, a connecting frame is fixedly arranged between supports on the two pulse magnetizing crawler walking mechanisms, and a sand washing spray head is arranged on the connecting frame. According to the invention, the multiple electromagnets are sequentially powered on, rust or other substances on the non-powered electromagnets and the non-magnetized soft magnetic blocks canfall off, the walking capacity of the pulse magnetizing crawler walking mechanism on a ship body is improved, and the rust removal efficiency of the robot is improved.

The invention discloses a device for vibration recovery of saline water after condensation crystallization. The device comprises a concentrated heat exchange tank and a crystallizing tank, wherein the concentrated heat exchange tank adopts a jacketed type long barrel-shaped structure composed of an inner barrel and an outer barrel and is longitudinally arranged, a rotating shaft longitudinally penetrates through the inner barrel, and fiber brush bundles are fixed on a bristle drum of the rotating shaft; the inner barrel of the concentrated heat exchange tank is communicated with the outside through an air pipe and an exhaust fan to form an evaporation line; a concentrated heat exchange tank jacket, a water return pipe, a waste hot water pool heat exchanging vertical-pipe of a boiler, a circulating water pump and a water inlet pipe form a heating line; the concentrated heat exchange tank jacket is connected with a water hammer vibrator composed of a crankshaft connecting rod and a piston; a solution to-be-concentrated inlet pipe is arranged at the upper end of the concentrated heat exchange tank, and the lower end of the concentrated heat exchange tank is connected with the crystallizing tank through an inclined bottom slot and a launder; the crystallizing tank adopts a conic bottom structure, and the conic bottom is connected with a filter vibrating screen and the solution to-be-concentrated inlet pipe through mortar pumps. The device is unique and ingenious in design and strong in practicality, is a perfect-function device for vibration recovery of saline water after condensation crystallization, and has a wide application prospect.

The invention discloses an injection molding manipulator, and relates to the technical field of injection molding manipulators. The injection molding manipulator comprises an injection molding manipulator body composed of a base, a mechanical arm and a grabbing mechanism, the top of the base is fixedly connected with the bottom of the mechanical arm, and the right side of the bottom of the mechanical arm is fixedly connected with the top of the grabbing mechanism; and the grabbing mechanism comprises an upper bearing block, the interior of the upper bearing block is slidably connected with the bottom of the mechanical arm through a hydraulic telescopic rod, the bottom of the upper bearing block is fixedly connected with a lower bearing block through a vibration block, and an air guide pipe is arranged in the lower bearing block. According to the injection molding manipulator, the problems that when certain small and high-precision injection molding parts are processed, a traditional clamping jaw manipulator is prone to damage the injection molding parts, clamping is inconvenient, the efficiency is low, meanwhile, in the clamping process, certain rim charges are prone to being attached to the inner walls of clamping jaws, and the injection molding parts are prone to being scrapped due to extrusion of the rim charges in the next clamping process are solved.

The invention discloses a cleaning refrigerating system, and relates to the related technical field of refrigerating systems. A solution heat exchanger is included. The outer side of the solution heatexchanger is fixedly connected with a refrigeration pipeline. One end of the refrigeration pipeline is fixedly connected with one end of a condenser, and the other end of the refrigeration pipeline is fixedly connected with one end of an evaporator. The other end of the condenser is fixedly connected with one side of a first seal piece, and the other end of the evaporator is fixedly connected with one side of a second seal piece. The invention further discloses a method of the cleaning refrigerating system. The method comprises the steps that A, the refrigeration system is stopped; B, a dry ice machine is started, and a corresponding valve is opened; C, a high-pressure water tank and a corresponding valve are opened; and D, a cleaning water tank and a corresponding valve are opened. The dry ice machine can be used for manufacturing dry ice, after dry ice particles make contact with lubricating oil films and dirt in heat exchange pipes and between various shell pipes, the phenomenon ofembrittlement explosion can happen, accordingly, the lubricating oil films and the dirt can contract and loosen, and then instant gasification and swelling of dry ice particles happen.

The invention discloses a thread scrape filter cleaning method which is designed to solve the problems of incomplete cleaning and easy blocking and the like in the present thread scrape filter. The thread scrape filter cleaning method is as follows: air is blown to a filter shell, so that disturbance is formed to the fluid at a zone, where a filter gauze in a filter is arranged, further, impurities on the filter gauze separate from the filter gauze. According to the thread scrape filter cleaning method, the impurities on the filter gauge of the filter can be removed more completely and the cleanness of the filter is improved; and the method is applicable to various filters for filtering fluid.