46results about How to "Eliminate edges and corners" patented technology

The invention discloses a cone-disc type waste concrete regenerated coarse aggregate mortar stripping device. The cone-disc type waste concrete regenerated coarse aggregate mortar stripping device comprises a base, a material collection bin and a cone-disc type grinding disc, wherein the cone-disc type grinding disc is composed of an upper grinding disc and a lower grinding disc, the grinding surface of the lower grinding disc is of a convex cone type, the grinding surface of the upper grinding disc is of a concave cone type, and the grinding surface of the upper grinding disc is in fit with that of the lower grinding disc; the base is provided with a plurality of reverse-hook-shaped supports, the disc surface of the upper grinding disc is correspondingly provided with position-limiting holes, and reverse hooks of all the reverse-hook-shaped supports penetrate into the corresponding position-limiting holes to restrict the upper grinding disc to be only capable of sliding up and down; ahydraulic force transmitting device is arranged between the upper grinding disc and all the reverse-hook-shaped supports, and ascending and descending of the upper grinding disc are controlled through stretching and contracting adjustment of the hydraulic force transmitting device; and the center of the upper grinding disc is provided with a material inlet, the material inlet penetrates out of the top of the material collection bin, and the lower portion of the material collection bin is provided with a material outlet. The cone-disc type waste concrete regenerated coarse aggregate mortar stripping device is simple in structure, the aggregate mortar stripping effect is good, and the original particle size of coarse aggregate can be maintained to make the performance of the coarse aggregate be close to natural aggregate, so that the workability, strength and durability of freshly-mixed waste concrete are improved.

The invention discloses a particle shape modifying device for concrete or asphalt mixture aggregates. The device comprises a material bin and a stirring device, wherein the material bin is divided into a particle shape modifying bin and a material collecting bin through a material separating plate; the stirring device is a spiral stirring device and is vertically arranged in the particle shape modifying bin; a plurality of metal grinding balls are arranged in the particle shape modifying bin; a feeding port is formed in the upper side part of the particle shape modifying bin; charging holes are uniformly distributed in the surface of the material separating plate; and a discharging port is formed in the bottom part of the material collecting bin. The device is simple in structure, convenient to mount and use, and low in energy consumption; the particle shape of the aggregates can be effectively improved, and edges can be removed; the aggregate modifying time can be controlled during use, so that the aggregates can be prevented from being damaged and broken; the device is matched with a screening machine and realizes continuous production work.

The invention discloses an intelligent household electric curtain, and relates to the technical field of intelligent household equipment. The problems that in the prior art, a curtain can only be opened and closed by moving left and right and cannot be opened and closed by moving vertically, then different light environments cannot be created for the interior, and then the different light and lighting requirements of a user cannot be met are solved. The curtain comprises a curtain body and mounting bases arranged on the walls of the two sides of the curtain body respectively, each mounting base is provided with a lifting mechanism, support frames are correspondingly arranged on the portions, at the outer sides of the mounting bases, of the walls, a power box is erected between the two support frames, a left side box body and a right side box body of the power box are each provided with an opening allowing the curtain body to pass through, roller mechanisms are arranged on the upper side and the lower side in the power box respectively, the top of the curtain body penetrates through the openings, a lifting box body is connected to the top of the curtain body, the two ends of the lifting box body are connected with and cooperate with the lifting mechanisms on the two sides respectively, and the lifting box body is internally provided with two power devices capable of driving theleft curtain body and the right curtain body to move to be opened and closed.

The invention belongs to the technical field of solid waste resource utilization and waste water treatment, and discloses a method for preparing building aggregates from domestic waste incineration slag, which comprises: heating the domestic waste incineration slag at high temperature and low temperature tempering to obtain the first solid material; disperse the first solid material into the concrete waste water of the mixing station for a water bath, vibrate reciprocally, then filter and dry to obtain a second solid material; set the second solid material at a set temperature, set Set humidity, set CO 2 Carbonized curing in a concentrated atmosphere to obtain building aggregates. The method for preparing building aggregates from domestic waste incineration slag provided by the invention can efficiently recover and reuse domestic waste incineration slag, concrete waste water from mixing station and greenhouse gas CO 2 , It also uses the unique physical and chemical properties of waste to prepare new high-quality building aggregates through modification treatment, reducing the risk of durability defects and structural defects.

The present application discloses a method for anti-oxidation treatment of the surface of NdFeB magnetic powder, including steps: (1) Pre-oxidizing the NdFeB magnetic powder by means of spray evaporation, and the spray evaporation solution has a mass concentration of 1-2wt.% heavy chromium salt solution, a mixed solution of phosphoric acid solution with a mass concentration of 3-5wt.%; (2), the pre-oxidized NdFeB magnetic powder is treated twice by spray evaporation, and the spray evaporation solution is 1-5wt.% bisulfite Sodium solution; (3), adopting spray evaporation method to post-treat NdFeB magnetic powder, the spray evaporation solution is sodium hydroxide solution; (4), drying, and obtaining ultra-fine NdFeB permanent magnets with a dense anti-oxidation film on the surface magnetic powder. The invention uses a spray evaporation device to realize efficient and rapid surface modification treatment of magnetic powder, and the formed composite film is relatively dense and uniform. The burrs and edges and corners of the ultrafine magnetic powder are eliminated through the pre-oxidation process, and the fluidity of the NdFeB ultrafine magnetic powder is increased. and bulk density, which improves the oxidation resistance of NdFeB ultrafine magnetic powder.

The invention relates to the technical field of material preparation, and discloses a spherical resin-based brush composite material and a preparation method thereof. The spherical resin-based brush composite material of the present invention comprises the following components in mass percentage: microcrystalline graphite powder 15-30%, graphite powder 43-63%, chelating agent 0.5-3%, binder 20-27%, compound lubrication Agent 1.5‑4%, release agent 0.02‑0.08%. The present invention spheroidizes the graphite resin powder and eliminates the edges and corners of the powder, thereby improving the self-fluidity of the powder and achieving isotropic characteristics. Get the greatest degree of matching with the working characteristics of the motor.

The invention discloses a liposuction needle capable of reducing adipose cell scratches. The liposuction needle comprises a handle and a needle tube connected with the handle. A liposuction hole is formed in the front end of the needle tube, arc-shaped transition is arranged between the upper surface and the lower surface of the end face of the liposuction hole, wedge-shaped transition is furtherarranged between the upper surface and the lower surface of the end face of the liposuction hole of the liposuction needle in the length direction of the needle tube, and the wedge-shaped face is gradually enlarged from the end away from the liposuction hole to the liposuction hole. According to the invention, arc-shaped transition between the upper surface and the lower surface of the end surfaceof the liposuction hole is arranged; therefore, edges and corners formed on the edge of the upper surface of the end face of the liposuction hole are eliminated, scratches to capillaries on the surface layers of the sucked adipose cells are greatly reduced, the survival rate of the sucked adipose cells is greatly increased, and retransplantation of the sucked adipose is facilitated.

The invention discloses a method for preparing a degradable coating material by an ammonolysis modified vegetable oil and an application of the biodegradable coating material. The method comprises thefollowing steps: firstly preparing the modified vegetable oil by using an ammonolysis method, respectively adding an isocyanate and a polyoxypropylene diol into the modified vegetable oil, adding a chain extender and a catalyst for carrying out a reaction, and finally adding N-methyldiethanolamine for carrying out a reaction to obtain the degradable coating material. A urea-formaldehyde solutionis sprayed on the surface of fertilizer particles during a preheating stage of the coating. The prepared coating material has relatively good micro-porous air-permeability, is relatively convenient for controlling a release rate of a fertilizer, and has relatively good degradable function. At the same time, the surface of the fertilizer particles is modified before coating to eliminate surface crystallization and angularity of the fertilizer particles to make the surface be relatively smooth and further enhance coating effects.

The invention belongs to the technical field of office supplies, and in particular relates to a rubber rod clamp. The rubber rod clamp comprises a front rotating arm, a rear rotating arm, a pin, and a bottom plate, a handle and a press strip which are made of plastics, wherein the handle is pivoted on the side edge of the bottom plate through the pin; a first end and a second end of the front rotating arm and a first end and a second end of the rear rotating arm are connected with the press strip and the bottom plate respectively; the tail ends of the first ends of the front rotating arm and the rear rotating arm are extended out of the outer side surface of the press strip, and the front rotating arm and the rear rotating arm are connected with the press strip in a detachable mode; and the tail ends of the second ends of the front rotating arm and the rear rotating arm are extended out of the outer side surface of the side edge, and the front rotating arm and the rear rotating arm are connected with the side edge in a detachable mode. The rubber rod clamp is mainly made of plastic materials and can be manufactured in an integrated mode, so that the cost is saved; edges and corners of metal pieces are eliminated by the plastic rubber rod clamp, and the plastic rubber rod clamp has smooth handfeel compared with a metal handle clamp; and in addition, the rubber rod clamp is convenient to assemble and disassemble, and a single part is convenient to replace, so that metal and rubber materials can be conveniently separated and recycled when products are discarded, and the rubber rod clamp extremely meets the requirement of environment friendliness.

The invention relates to a power line collection structure of electric apparatus, in particular to a hanging hook arranged on the side surface of the machine body of electric apparatus and provided with an L-shaped cross section. A connecting piece is arranged on the bottom side edge where the hanging hook is connected with the machine body, and a limiting piece is arranged on the erect side edge of the hanging hook. The hanging hook is characterized in that the connecting piece is designed into an arc-shaped piece with an outward convex upper surface, the arc-shaped edges at the two sides of the connecting piece are respective connected with the machine body, and circular arc transition structures are respectively arranged at the edge parts at the two sides of the connecting point between the connecting piece and the limiting piece. After the structure is adopted, the connecting part among the hanging hook, the machine body and the limiting piece form an arc-shaped structure, when the hanging hook is applied with force, the force disperses along the arc-shaped structure, so that the problem of stress concentration of the traditional hanging hook is solved, the connection between the hanging hook and the machine body is firmer, meanwhile, the edge angle of the edge is better eliminated, and when the power line is arranged on the hanging hook, the damage to the power line is avoided; and in addition, the hanging hook is skillfully arranged above the connecting screw, thereby playing the role of blocking the screw out, and the screw is avoided from being invaded by water to prevent the screw from rusting.

The invention discloses a cone-disc type waste concrete regenerated coarse aggregate mortar stripping device. The cone-disc type waste concrete regenerated coarse aggregate mortar stripping device comprises a base, a material collection bin and a cone-disc type grinding disc, wherein the cone-disc type grinding disc is composed of an upper grinding disc and a lower grinding disc, the grinding surface of the lower grinding disc is of a convex cone type, the grinding surface of the upper grinding disc is of a concave cone type, and the grinding surface of the upper grinding disc is in fit with that of the lower grinding disc; the base is provided with a plurality of reverse-hook-shaped supports, the disc surface of the upper grinding disc is correspondingly provided with position-limiting holes, and reverse hooks of all the reverse-hook-shaped supports penetrate into the corresponding position-limiting holes to restrict the upper grinding disc to be only capable of sliding up and down; ahydraulic force transmitting device is arranged between the upper grinding disc and all the reverse-hook-shaped supports, and ascending and descending of the upper grinding disc are controlled through stretching and contracting adjustment of the hydraulic force transmitting device; and the center of the upper grinding disc is provided with a material inlet, the material inlet penetrates out of the top of the material collection bin, and the lower portion of the material collection bin is provided with a material outlet. The cone-disc type waste concrete regenerated coarse aggregate mortar stripping device is simple in structure, the aggregate mortar stripping effect is good, and the original particle size of coarse aggregate can be maintained to make the performance of the coarse aggregate be close to natural aggregate, so that the workability, strength and durability of freshly-mixed waste concrete are improved.

The invention belongs to the technical field of polymer powder processing, and in particular relates to a preparation method of polyether ketone ketone fine powder for coating. The preparation method comprises the following steps: mechanically pulverizing a polymerized polyether ketone ketone polymer, washing and drying to obtain polyether ketone ketone coarse powder, performing stabilizing treatment on the coarse powder, then adding a certain amount of modifier to obtain mixed powder, and pulverizing the mixed powder with air flow to obtain polyether ketone ketone fine powder. The preparation method has a simple process, high pulverization efficiency and low impurity content, the prepared polyether ketone ketone fine powder has uniformity of dispersion and concentrated particle size distribution, the granular form is near-spherical, and the polyether ketone ketone fine powder is particularly suitable for an electrostatic spraying process, and can effectively improve the uniformity and liquidity of coating, decrease coating defects, play the characteristics of the polyether ketone ketone and improve the stability of coating.

The invention discloses a processing method of a tooth cleaning brush head. The tooth cleaning brush head comprises brush bristles which are vertically arranged on a brush base and a connecting part which is arranged at one end of the brush base and connected with a handle, and each brush bristle comprises a brush body and a brush ball. The processing method of the tooth cleaning brush head comprises the following steps that all installing through holes are punched in the positions where the brush bristles need to be installed at a time through a punching machine and a multi-needle model; a brush bristle female mold is provided with pits of which the shapes are matched with the brush bristle shapes of all the brush bristles; the brush bristle female mold is arranged on the brush base with the holes in an inverted mode, compressed air for silicon rubber is blown from the holes formed in the lower portion of the brush base, and then the through holes are filled with packing from the bottom of the brush base. According to the processing method, the problems that an existing toothbrush head is bad in tooth cleaning effect and causes harm to the tooth faces can be solved.

The invention discloses a tooth cleaning brush head, which comprises brush bristles which are vertically arranged on a brush base and a connecting part which is arranged at one end of the brush base and is connected to a handle; the tooth cleaning brush head is characterized in that each brush bristle comprises a brush body which is arranged at the lower part of the brush bristle and is connected to the brush base and a brush ball which is arranged at the top of the brush body; each brush body is represented as a frustum with downside bigger than upside; the conical surface of each frustum sinks inwards, so that an arc-shaped form is shaped; and the brush balls are solid balls. Compared with the prior art, the tooth cleaning brush head disclosed by the invention can solve the problems of the brush head of an existing toothbrush which is poor in effect on cleaning teeth and can cause damage to tooth faces.