37results about How to "Combined fastening" patented technology

The invention belongs to the technical field of air purification, and particularly relates to a nano-silver active filter element which comprises a filter element body comprising sheet-shaped filter paper formed by stacking multiple layers of composite structures, and the sheet-shaped filter paper sequentially comprises a nano-silver antibacterial layer, a filter layer and a protective layer in the direction from an air inlet surface to an air outlet surface. And the nano-silver antibacterial layer is prepared from phenolic composite fibers immobilized with nano-silver ions, so that the nano-silver ions are combined with the phenolic composite fibers more firmly. The invention further relates to a preparation method of the nano-silver active filter element, the structural diversity of phenolic compounds is utilized, and the nano-silver ions are changed into different shapes, so that the nano-silver ions are combined with the phenolic composite fibers more firmly and are not prone to falling off, the antibacterial performance is enhanced, the nano-silver active filter element can be washed with water for use, and the effects of long-acting antibiosis and high antibacterial performance are achieved.

The invention discloses a fastening structure for a clean container. A detachable fastening piece is combined with a cover of the clean container so that the cover can be closed or opened on the seat of the clean container. The fastening piece includes an integrally formed main body. , a positioning part and an elastic buckle arm, the positioning part extends from one side of the main body to form a shrapnel, and the shrapnel has a flange to fasten the fastener on the cover, the elastic buckle arm has an elastic arm, and its end has a side To the flange, the lateral flange extends into the seat to form a snap-fit ​​state. The fastening part can further include an elastic auxiliary arm formed between the elastic arm and the main body to increase the elastic strength of the elastic buckle arm. The fastening structure of the clean container of the present invention can reduce the number of fastening components, can be directly positioned on the cover body, and forms self-locking after fastening the seat body, and strengthens the elastic component.

The invention discloses a composite nano-silver antiviral agent as well as a preparation method and application thereof, and belongs to the technical field of health protection. The problems that in the prior art that a nano-silver antiviral agent is low in stability and timeliness; and existing cloth is poor in antiviral property are solved. The composite nano-silver antiviral agent is prepared from the following raw materials: an ester-based quaternary ammonium salt cationic surfactant, dodecyl trimethyl ammonium chloride, nano-silver sol, polyethylene glycol and water. The preparation method of the composite nano-silver antiviral agent comprises the following steps: weighing the raw materials for preparing the composite nano-silver antiviral agent according to the mass ratio; equally dividing water into two parts; preparing a first mother solution; preparing a second mother solution; and mixing and stirring the first mother liquor and the second mother liquor to obtain the compositenano-silver antiviral agent. The composite nano-silver antiviral agent has long-acting and stable bactericidal and antiviral effects, can improve the antiviral property of non-woven fabrics when applied to the non-woven fabrics, and is harmless to human bodies, safe and reliable.

The invention relates to nickel-boron-coating calcium fluoride composite powder, a preparation method and an application thereof and a self-lubricating ceramic cutter. The nickel-boron-coating calcium fluoride composite powder has a CaF2@Ni-B core-shell structure and adopts an ultrasonic assistant chemical plating method: adding the activated CaF2 powder suspension liquid into a nickel-boron chemical plating solution, and precipitating nickel and boron and covering the surface of micrometer CaF2 with nickel and boron under the ultrasonic and stirring condition; the nickel-boron chemical plating solution contains 15g / L to 20g / L of nickel sulfate, 50 to 60 mL / L of ethylenediamine, 1 to 1.5 g / L of sodium borohydride and 30 to 50 g / L of sodium hydroxide. The invention also provides a preparation method and an application of the nickel-boron-coating calcium fluoride composite powder. The nickel-boron-coating calcium fluoride composite powder is charged into a self-lubricating ceramic cutter base body, so that the fracture flexibility and bend-resisting strength of the ceramic cutter can be remarkably improved.

The present invention relates to an intelligent manhole cover special for an electric power tunnel. The intelligent manhole cover comprises a cylindrical base at an opening of a manhole and a cover plate mounted at the top end of the base to seal the base. Internal threads are formed in the inner wall of the top of the base, while an external thread mounting portion matching with the internal threads is disposed at the central position of the bottom of the cover plate. A sunk groove is formed in the top end face of the base, and a first pressure sensor is mounted in the sunk groove. A plurality of support lugs are annularly disposed along the periphery of the inner wall of the bottom of the base at intervals; an inner supporting plate is placed on the support lug, and a second pressure sensor is mounted between each support lug and the inner supporting plate. Environment monitoring sensors and a light sensing probe are also mounted on the inner wall of the base. The intelligent manhole cover also comprises a controller and an alarm device. Signal output ends of the various sensors, the signal output end of the light sensing probe and the control input end of the alarm device are all electrically connected to the controller. The intelligent manhole cover special for an electric power tunnel is simple in structure, convenient to implement, high in intelligent level, and good in protection effect, and is integrated with a plurality of monitoring and protection functions.

The invention discloses clay glaze which consists of the following raw materials in parts by weight: 80-85 parts of red soil, 3-5 parts of kaolin, 1-3 parts of natural river sand, 2-5 parts of frit, 4-6 parts of cooling agent and 3-5 parts of coloring material. The clay glaze is natural, environment-friendly, non-toxic and beautiful, and the resources are abundant; with a unique formula, the clay glaze is firmly bonded with a blank, so that a breakthrough in joint decoration of the coloring material and clay glaze is realized, and a decoration effect on a red soil pottery product is greatly improved. The invention also discloses a production method of a red soil pottery product by use of the clay glaze, which comprises production of a red soil pottery blank, production of clay glaze, clay glaze application and sintering. After the blank is treated with the clay glaze and naturally dried, various patterns can be directly painted on the surface layer of the clay glaze as necessary; the phenomena such as clay glaze jump, bubbling, shelling and the like in sintering are avoided; after sintering, the surface layer of the clay glaze paint is smooth and has good hand feeling, so that the grade and market share of the product are greatly improved.

The invention discloses a method for preparing a positive electrode material for a flexible supercapacitor. The steps of the preparation method are as follows: firstly, nickel ions and cobalt ions are co-deposited with dual ions on the surface of a three-dimensional graphene foam by an electrochemical method to obtain the positive electrode material for a supercapacitor, and The morphology and performance of the material are modified with different electrochemical deposition times to improve the conductivity, ion conductivity and electron mobility of the material. The prepared positive electrode material has a petal shape, and its nanosheets are composed of 3-5 nanometer crystal grains, which are evenly distributed and have a larger reaction interface area with the electrolyte, which is conducive to generating more electrochemical redox reaction charges , to achieve a significant improvement in material performance. The test results of the electrochemical energy storage performance of the material show that the material has excellent electrochemical energy storage performance and cycle stability. Based on graphene foam, the material has very good flexibility.

The present invention relates to an attachable / detachable handle coupled to a hollow socket, which is fixed on the outer surface of a kitchen container, so as to be separable from the kitchen container. According to the present invention, provided is an attachable / detachable handle having: a first space part extending from an end part facing a kitchen container and into which a socket of the kitchen container is inserted; and a second space part extending from the first space part and opened upward such that a first mounting part is formed on the upper part and a second mounting part is formed in the center, wherein a button part, which can be coupled with the socket so as to be separable therefrom, is located in the second space part. The button part includes: a button seat having a central groove and fixed on the first mounting part; a button positioned so as to penetrate the central groove of the button seat and moving in the vertical direction along the second space part; a spring; a movement member supported by the spring so as to move in the forward and backward directions towards the container direction end part, thereby moving forward by the spring and moving backward by the downward movement of the button; and a plate-shaped member fixed to the second mounting part so as to axially rotate in the vertical direction, wherein the plate-shaped member is coupled with the movement member, so as to be separable therefrom, thereby controlling the forward movement of the movement member.