Abstract: The present disclosure discloses a method for water purification through fresh generation of a flocculant, including the following steps: (1) mixing a water-purifying agent precursor with a liquid, exciting a resulting mixture, and adding an excited mixture to water to be purified; and/or mixing the water-purifying agent precursor directly with the water to be purified, and exciting a resulting mixture, so that the water-purifying agent precursor undergoes a reaction to produce ferric hydroxide and the ferric hydroxide co-settles with suspended matters and/or impurities in the water to be purified, where the exciting includes addition of an oxidizing substance; and (2) subjecting a mixture obtained in step (1) to SLS to obtain purified water. This method can effectively settle suspended matters in water and adsorb some organic impurities without producing acids and salts during fresh generation of hydroxides, ensuring water-drinking health and reducing the adverse effects of recycling of industrial water.

Abstract: The present application relates to one-motor-duel-drive synchronous drive device. The drive device includes: a housing, wherein the housing is hollow, a telescopic mechanism is connected to the housing, the telescopic mechanism includes a screw rod, and one end of the screw rod extends into the housing; a transmission mechanism, wherein the transmission mechanism comprises a first transmission component rotatably connected to an inner wall of the housing, a second transmission component is fixedly connected to the screw rod, and the first transmission component and the second transmission component are staggered gears engaged with each other; a linkage lever provided between the housings, wherein two ends of the linkage lever are connected to the first transmission component, respectively; and a drive mechanism configured to act on the linkage lever to rotate the linkage lever.

Abstract: Disclosed is a method and device for recycling an acidic etching waste solution through progressive electrolysis. The method includes: introducing at least one electrolytic cell A, where the electrolytic cell A is divided into an anode chamber and a cathode chamber; during an electrolysis operation, a cathode electrolyte of the electrolytic cell A includes the acidic etching waste solution; and introducing at least one electrolytic cell B, where the electrolytic cell B is divided into an anode chamber and a cathode chamber; the cathode electrolyte of the electrolytic cell B includes a cathode electrolyte undergoing an electrolytic treatment from the electrolytic cell A or a mixed solution of the cathode electrolyte undergoing the electrolytic treatment with the acidic etching waste solution. With the present disclosure, PCB manufacturers can avoid the introduction of new impurities and reduce the electrolysis energy consumption during an electrolytic copper recovery process.

Abstract: The present disclosure discloses a method for recycling of PCB copper chloride etching waste solution through precipitation treatment and an apparatus applicable thereto, including mixing a PCB copper chloride etching waste solution with a pH value adjusting agent for reaction, so that copper salt precipitates in the solution, and at least one of the PCB copper chloride etching waste solution and the pH value adjusting agent contains a PCB copper chloride etching waste solution containing ammonium and/or ammonia; and, subjecting a solid-liquid mixture obtained in step (1) to SLS to obtain filtrate A and filter residue C; and carrying out ammonia nitrogen removal treatment on the filter residue C to generate recovered copper products; and finally, reusing all or part of the filtrate A directly or after composition adjustment to the PCB copper chloride etching system as a regenerated etching replenishment solution and/or an etching oxidant solution.

Abstract: The present invention provided an optimized method for an insoluble anode acid sulfate copper electroplating process, comprising following steps: providing an insoluble anode made of coated titanium in the form of a mesh or a perforated plate; providing at least one liquid outlet pipe/port on the side of the insoluble anode away from the cathode, to generate a liquid flow of an electroplating solution by overflow and/or power driven suction at the liquid outlet pipe/port; initiating an electroplating process by switching on an electroplating power supply, while the electroplating solution flows away due to the overflow and/or power driven suction at the liquid outlet pipe/port, the electroplating solution in the electroplating cell forms a liquid flow towards the liquid outlet pipe/port, and accordingly, adding electroplating solution to the electroplating cell to maintain the liquid volume in the cell until the electroplating process is completed and the electroplated cathode is removed.

Abstract: Provided are a linear driver for electric furniture and electric furniture. The linear driver for electric furniture includes a housing, a worm with one end extending into the housing, a worm wheel disposed in the housing and meshing with the worm, and a lead screw. The lead screw penetrates through the worm wheel and is in threaded connection with the worm wheel. At least one end of the lead screw extends out of the housing. At least one end of the worm wheel is provided with a guide structure. The guide structure is sleeved around the lead screw and is in clearance fit with the lead screw. The guide structure is fixed relative to the worm wheel or the housing.

Abstract: The present application relates to one-motor-duel-drive synchronous drive device. The drive device includes: a housing, wherein the housing is hollow, a telescopic mechanism is connected to the housing, the telescopic mechanism includes a screw rod, and one end of the screw rod extends into the housing; a transmission mechanism, wherein the transmission mechanism comprises a first transmission component rotatably connected to an inner wall of the housing, a second transmission component is fixedly connected to the screw rod, and the first transmission component and the second transmission component are staggered gears engaged with each other; a linkage lever provided between the housings, wherein two ends of the linkage lever are connected to the first transmission component, respectively; and a drive mechanism configured to act on the linkage lever to rotate the linkage lever.

Abstract: A method for electrolytic recycling and regenerating acidic cupric chloride etchants, comprising: (1) employing an acidic cupric chloride etchant that contains iron ions in PCB etching, controlling the oxidation-reduction potential (ORP) of said acidic cupric chloride etchant within the range of 360-700 mV; (2) transferring an etchant waste of step (1) to an electrolysis tank and electrolyzing said etchant waste; (3) the chlorine gas generated by electrolysis oxidizes the electrolyte in the electrolysis tank and thereby dissolved into the electrolyte, in the effect of the ORP of the electrolyte; (4) regenerating an etchant by oxidizing Fe(II) ions and Cu(I) ions in the electrolyte to Fe(III) ions and Cu(II) ions using the chlorine gas of step (3) that is dissolved into the electrolyte, and when the chlorine gas is fully dissolved into the electrolyte, the oxidizing step of the electrolyte is finished and an etchant is regenerated; (5) transferring the etchant regenerated in step (4) to an etching production l

Abstract: A method for electrolytic recycling and regenerating acidic cupric chloride etchants, comprising: (1) employing an acidic cupric chloride etchant that contains iron ions in PCB etching, controlling the oxidation-reduction potential (ORP) of said acidic cupric chloride etchant within the range of 360-700 mV; (2) transferring an etchant waste of step (1) to an electrolysis tank and electrolysing said etchant waste; (3) the chlorine gas generated by electrolysis oxidizes the electrolyte in the electrolysis tank and thereby dissolved into the electrolyte, in the effect of the ORP of the electrolyte; (4) regenerating an etchant by oxidizing Fe(II) ions and Cu(I) ions in the electrolyte to Fe(III) ions and Cu(II) ions using the chlorine gas of step (3) that is dissolved into the electrolyte, and when the chlorine gas is fully dissolved into the electrolyte, the oxidizing step of the electrolyte is finished and an etchant is regenerated; (5) transferring the etchant regenerated in step (4) to an etching production l