32results about How to "Increase the effective contact surface" patented technology

The invention discloses a novel handcart grounding device of a switch cabinet, which comprises a handcart grounding contact, a cabinet body grounding bar and a fixing board, wherein the handcart grounding contact comprises a handcart grounding bar, a handcart grounding strip I, a handcart grounding strip II, a spring I, a spring II, a bolt I and a bolt II; the fixing board is fixed on a cabinet body bottom board, and the cabinet body grounding bar is fixed on the fixing board; and the handcart grounding contact is fixed on the front end surface of the high-voltage side of a handcart bottom board. The invention has the characteristics of low integral cost, strong matching property, high electrical parameters, strong generality and the like; and when a handcart is pushed in or pulled out, the precise positioning of the handcart can be realized by the interaction between the handcart grounding contact and the cabinet body grounding bar.

The invention discloses a preparation method of an antibacterial and deodorant material for a refrigerator and a freezer. A porous material with the specific area being 200 m<3> / g-2,000 m<3> / g is used as a carrier, the carrier is one or more of active carbon, a molecular sieve and a resin material, the carrier is subjected to chemical pretreatment, dried and smashed, the fine powder is then soaked in a mixed solution of soluble metal salt, vitamin B12, organic amine substances and an auxiliary, and finally shaping and drying are carried out; the soluble metal salt is one or more of silver salt, zinc salt and nickel salt. The carrier is pretreated with the soluble metal salt, the vitamin and the organic amine substances, and under the effect of the auxiliary, odorous gas existing in the refrigerator and the freezer is completely removed; the effective contact surface of active substances is increased, and the deodorization effect is enhanced; rapid propagation of bacteria is inhibited, the decay speed of food is reduced, and the freshness keeping effect is enhanced; chemical adsorption is good, and release and secondary pollution are avoided.

The invention discloses a production method of ultra-pure electronic grade phosphoric acid, comprising the following steps of: (1) vaporizing high purity phosphorous oxychloride by heating and allowing phosphorous oxychloride steam to enter a phosphoric acid generator; (2) heating high purity water to prepare water vapor, and allowing water vapor to enter the phosphoric acid generator; (3) adjusting the mass ratio of water vapor to phosphorous oxychloride steam in the phosphoric acid generator, conducting a reaction to generate ultra-pure phosphoric acid and hydrogen chloride steam, adding phosphoric acid into a liquid collection tank, removing bubbles from hydrogen chloride and putting it into a hydrochloric acid liquid trap; (4) heating the obtained phosphoric acid, and separating hydrogen chloride under vacuum to obtain ultra-pure electronic grade phosphoric acid; and (5) allowing the obtained hydrochloric acid to enter an evaporator, vaporizing a hydrogen chloride gas, carrying out cyclic absorption by the use of an absorption liquid to obtain high purity hydrochloric acid; and carrying out condensation and despumation on the tail gas which has undergone absorption, and allowing the tail gas to pass through a tail gas tower and to be discharged into the atmosphere. According to the invention, the gas phase reaction between phosphorous oxychloride and water vapor is conducted, contact surface of reactants is enlarged, reaction speed is effectively controlled, and the contents of water and hydrogen chloride in phosphoric acid are controlled. Therefore, the ultra-pure electronic grade phosphoric acid can be prepared with a by-product of high purity hydrochloric acid.

A shielding system for high-current applications, having a connecting cable that has an insulated conductor (22) and a cable shielding surrounding the insulated conductor, as well as a shielding housing having a feed-through. In addition, the shielding system has a hollow cylindrical and electrically conductive shielding sleeve. The insulated conductor is fed through the shielding sleeve. The shielding sleeve is situated in the area of the feed-through of the shielding housing, so that the shielding housing abuts a jacket surface of the shielding sleeve. The cable shielding lies against a jacket surface of the shielding sleeve. The cable shielding is electrically connected to the shielding housing via the shielding sleeve.

The invention relates to a V-profile opened current transformer. The V-profile opened current transformer comprises a first mutual inductor body, a second mutual inductor body and a metal locking tape, wherein the first mutual inductor body comprises a first pouring plastic shell, a first half-circular iron core and a first secondary coil, the second mutual inductor body comprises a second pouringplastic shell, a second half-circular iron core and a second secondary coil, the first half-circular iron core is formed by splicing a first large half-circular iron core and a first small half-circular iron core, V-shaped contact concave surfaces are respectively formed at two ends of the first half-circular iron core, the second half-circular iron core is formed by splicing a second large half-circular iron core and a second small half-circular iron core, V-shaped contact convex surfaces are respectively formed at two ends of the second half-circular iron core, and the contact convex surfaces and the contact concave surfaces are spliced to form a circular mutual inductor body. The V-profile opened current transformer has the advantages of simple structure, stable and reliable performance, small magnetic leakage and high magnetic conductivity.

The invention discloses a powder liquid mixing and emulsifying machine. The powder liquid mixing and emulsifying machine comprises a matrix, a mechanical seal, a discharging chamber, a distributing cylinder, a side material feeding chamber and a top feeding chamber, a main shaft is arranged in the matrix, the mechanical seal, the distributing cylinder and the top feeding chamber are sequentially arranged on the outer side of the main shaft, the mechanical seal is arranged at the top of the matrix, the outer side of the mechanical seal is provided with the discharging chamber, the discharging chamber is connected with the distributing cylinder, the outer side of the distributing cylinder is provided with the side material feeding chamber, the side material feeding chamber communicates withthe distributing cylinder, and the top of the distributing cylinder communicates with the top feeding chamber; the distributing cylinder is internally provided with an impeller, a rotor and a stator;and a screw feeding block is arranged at the top of the main shaft. The invention further discloses a working method of the powder liquid mixing and emulsifying machine. According to the powder liquidmixing and emulsifying machine, a variety of inlets are formed, the feeding speed and stability can be controlled through spiral feeding, the effective contact surface of liquid materials is improvedthrough circumferential spraying, the mixing uniformity is improved through multi-layer impeller stirring, the material reaction is good, and the product quality is good.

The invention belongs to the field of metal soft magnetic materials, and particularly relates to a method for preparing an amorphous combined magnetic powder core. The method comprises the following steps that firstly, and two kinds of magnetic powder cores are respectively prepared, wherein the magnetic conductivity of one magnetic powder core differs by 200 from the magnetic conductivity of the other magnetic power core, the magnetic powder cores are in an equal-height cuboid shape, and two magnetic powder cores with the same magnetic conductivity are prepared; secondly, the four magnetic powder cores are spliced through magnetic conductive glue into a combined magnetic powder core, the top view of the combined magnetic powder core is in a hollow rectangular or square shape, and the method that the magnetic powder cores with the different magnetic conductivities are connected in spliced mode is adopted. A combined iron core is prepared through the same amorphous materials, the effective contact surface of the joint of the iron core is greatly increased, losses are reduced, and efficiency is improved.

A heat pipe has the heat conductivity coefficient which is far higher than that of any pure metal materials. However, as a result of a tubular structure of the heat pipe, particularly, in applications, non-ideal contact surfaces of a heat source and the heat pipe and a heat dissipation device and the heat pipe shape exist in a capillary pulsating heat pipe with a smaller diameter to form heat resistance. The invention discloses a plate metal plate strip which is windowed in sections, a plate heat-conducting strip of a groove pulsating heat pipe which is prepared by performing welding, vacuumizing and liquid injecting with another metal plate strip with grooves which are uniformly distributed in a simulating capillary pipeline punched by a mechanical mould in a same volume, as well as a process. The heat-conducting strip not only has a heat-conducting function of the pulsating heat pipe, but also effectively improves the heat resistance in application. The heat-conducting strip can be conveniently segmented to change the dimension by virtue of a simple tool according to length requirements of different occasions applicable.

The invention discloses a device for preparing purified water. The device comprises a first ion-exchange resin tower and a second ion-exchange resin tower, wherein two water inlets are respectively formed at the tops of the two ion-exchange resin towers; two water outlets are respectively formed at the bottoms of the two ion-exchange resin towers; the water outlet and the water inlet of the first ion-exchange resin tower are respectively and serially connected with the water inlet and the water outlet of the second ion-exchange resin tower. The device disclosed by the invention is simple in structure and easy to realize; by serially connecting the two ion-exchange resin towers, the service life of purified water and resin after the ion-exchange resin towers are regenerated is prolonged, and recycled acid and alkali materials are effectively saved; the water quality of prepared purified water is high; meanwhile, the device has the characteristics of great contacting area of water and resin, high mass transfer efficiency of filler, uniform distribution of liquid in the towers and the like, and is worthy of being widely popularized.

The invention discloses a production method of ultra-pure electronic grade phosphoric acid, comprising the following steps of: (1) vaporizing high purity phosphorous oxychloride by heating and allowing phosphorous oxychloride steam to enter a phosphoric acid generator; (2) heating high purity water to prepare water vapor, and allowing water vapor to enter the phosphoric acid generator; (3) adjusting the mass ratio of water vapor to phosphorous oxychloride steam in the phosphoric acid generator, conducting a reaction to generate ultra-pure phosphoric acid and hydrogen chloride steam, adding phosphoric acid into a liquid collection tank, removing bubbles from hydrogen chloride and putting it into a hydrochloric acid liquid trap; (4) heating the obtained phosphoric acid, and separating hydrogen chloride under vacuum to obtain ultra-pure electronic grade phosphoric acid; and (5) allowing the obtained hydrochloric acid to enter an evaporator, vaporizing a hydrogen chloride gas, carrying out cyclic absorption by the use of an absorption liquid to obtain high purity hydrochloric acid; and carrying out condensation and despumation on the tail gas which has undergone absorption, and allowing the tail gas to pass through a tail gas tower and to be discharged into the atmosphere. According to the invention, the gas phase reaction between phosphorous oxychloride and water vapor is conducted, contact surface of reactants is enlarged, reaction speed is effectively controlled, and the contents of water and hydrogen chloride in phosphoric acid are controlled. Therefore, the ultra-pure electronic grade phosphoric acid can be prepared with a by-product of high purity hydrochloric acid.

The invention discloses a fishery oxygenation insect killing lamp taking insects as auxiliary feed. The fishery oxygenation insect killing lamp taking the insects as the auxiliary feed comprises a main box body, wherein eccentric wheel cavities with upward openings are symmetrically arranged in the main box body in the left-right direction; a moving block is slidably mounted in each eccentric wheel cavity, and a cavity is formed in each moving block; when a sliding block pushes a clamping block completely into a spring cavity, a second spring drives a rack to move downwards, and the sliding block slides in the sliding cavity; by rotation of an auxiliary plate in an aerator structure, the effective contact surface between a water body and air is increased; dissolved oxygen in the water bodyis increased, and the circumstance that the water body is lack of oxygen is prevented; mass death of cultured animals caused by anoxia is avoided, the insects are attracted through the lamp and are killed by a power grid, then the moving blocks move downwards by movement, the insects in the cavities are brought into the water through a water cavity for the cultured animals to eat, and the resources of the insects are fully utilized.

The invention designs an anti-off witch for an elevator floor door which relates to a switch and solves the technical problem that the switch of a traditional elevator floor door is easy to fall off. The switch is characterized by comprising a moving contact arranged on a moving contact seat and a static contact arranged on a static contact seat; the static contact seat is provided with a fastener and a lead connecting piece, and the moving contact seat is provided with the fastener; and the moving contact and the static contact are respectively arranged on the side wall of the moving contact seat and the side wall of the static contact seat, extend outwards and can be mutually spliced. The anti-off switch for the elevator floor door adopts the splicing method, so that the effective contact area between the moving contact and the static contact is increased, original point contact is changed into surface contact, a certain contact stroke is achieved, and the disadvantage of easy fall-off of the prior art can be effectively prevented. The technical scheme has reasonable structure, is convenient to implement, can be conveniently used on the traditional elevator floor doors, and greatly improves the work stability of the switch.

A device for aerating wine in a bottle has an elongated, upright conduit with one end region immersed in the wine, and an opposite end region exposed to the atmosphere. A rotary shaft is located within, and extends along, the conduit. A wine blade is mounted on the shaft for drawing the wine as a wine flow into the one end region in an upward direction toward the opposite end region of the conduit upon rotation of the shaft. An air blade is preferably mounted on the shaft for causing the air to move as an air stream into the opposite end region in a downward direction toward the one end region of the conduit upon rotation of the shaft. A drive rotates the shaft, the wine blades and the air blades to propel the wine flow and the air stream against each other in a mutually countercurrent relationship and to commingle the wine flow and the air stream inside the bottle.

The present invention discloses a dual-grounding device applied to a transformer station guardrail. The device comprises a U-shaped grounding block arranged at the lower end of the guardrail, and the surface, opposite to the guardrail, of the grounding block is provided with grounding wires. The upper end of the grounding wires is fixedly connected with the grounding block through connection bolts and lock nuts, and the connection bolts pass through the guardrail and then are connected with a grounding pole arranged in the guardrail. The lower ends of the grounding pole and the grounding wires are connected with a grounding grid, the upper end of the grounding pole is provided with an upper location boss, and the upper location boss is provided with a spring pin. The middle portion o the grounding pole is provided with a lower location boss which is matched with an annular boss arranged at the lower end of the guardrail, and a jack is arranged between the upper location boss and the lower location boss. A shielding cover is arranged at the external portion, located at the grounding block, of the guardrail. The dual-grounding device applied to the transformer station guardrail employs the double grounding wires to greatly improve the grounding reliability.

The invention relates to an electronic module (10) for an electric drive in a vehicle, comprising an input-side electrical connection (12) for inputting an input current generated by an energy source (20); an intermediate circuit (14) with a capacitor; a semiconductor bridge circuit, connected in parallel to the intermediate circuit (14), wherein the bridge circuit comprises a high-side switch (162aa), and a low-side switch (164aa) connected in series to the high-side switch (162aa), wherein the high-side switch (162aa) is connected to the input-side electrical connection (12) via a first current path, wherein the low-side switch (164aa) is connected to the input-side electrical connection (12) via a second current path, wherein the first current path and the second current path are the same length; and an output-side electrical connection (18a,18b,18c) for outputting an output current generated by the bridge circuit from the input current.

The invention discloses a terminal of a battery connector. The terminal is sequentially and integrally extended and bent to form an abutting part, a battery contact part, a connecting part, a fixing part and a welding part, wherein at least two convex ribs are raised on the surface of the battery contact part at intervals, so that the effective contact area of a battery with the battery contact part when in use is increased, the resistance value is reduced compared with an original structure, the intensity of current while flowing through a battery contact surface can be increased, and the energy consumption is reduced. Moreover, when in use, the battery cannot be prevented from being vibrated, and the two parallel convex ribs can be used for effectively guaranteeing that the vibrated battery still has reliable contact with the battery contact part.

The invention belongs to the field of metal soft magnetic materials, and particularly relates to a method for preparing an amorphous combined magnetic powder core. The method comprises the following steps that firstly, and two kinds of magnetic powder cores are respectively prepared, wherein the magnetic conductivity of one magnetic powder core differs by 200 from the magnetic conductivity of the other magnetic power core, the magnetic powder cores are in an equal-height cuboid shape, and two magnetic powder cores with the same magnetic conductivity are prepared; secondly, the four magnetic powder cores are spliced through magnetic conductive glue into a combined magnetic powder core, the top view of the combined magnetic powder core is in a hollow rectangular or square shape, and the method that the magnetic powder cores with the different magnetic conductivities are connected in spliced mode is adopted. A combined iron core is prepared through the same amorphous materials, the effective contact surface of the joint of the iron core is greatly increased, losses are reduced, and efficiency is improved.

The invention discloses a preparation method of a metal matrix composite conductor blank. The method comprises the following steps of firstly, processing a metal material A into a core rod, processinga metal material B into an outer cylinder, and inserting the core rod into the outer cylinder to obtain a metal rod; secondly, performing plugging welding on the metal rod to obtain a blank; thirdly,heating the blank, and carrying out hot extrusion; and fourthly, sawing the blank subjected to hot extrusion to obtain the metal matrix composite conductor blank. According to the preparation methodof the metal matrix composite conductor blank in the invention, two metal materials are respectively processed into the core rod and the outer cylinder with the same taper angle, then the core rod andthe outer cylinder are prepared into the blank, and the blank is subjected to hot extrusion treatment and sawing treatment, so that the effective contact surface between the metal materials is increased, the fluidity difference of the blank in the hot extrusion process is improved, the phenomenon that the core rod material at the tail end of the blank is insufficient in the hot extrusion processis effectively improved, the yield of the metal matrix composite conductor blank is improved, and the production cost of the metal matrix composite conductor blank is reduced.

The invention relates to a preparation method of hexamethylol melamine with stable continuous quality, and mainly solves the problems of unstable quality and high free formaldehyde content of hexamethylol melamine with high hydroxymethylation degree prepared in the prior art. According to the technical scheme, the preparation method of hexamethylol melamine with stable continuous quality comprisesthe following steps: continuously adding melamine, formaldehyde and a catalyst into a double-screw reactor for hydroxymethylation reaction to obtain a material I; then continuously feeding the material I into a vacuum drying machine to be dried and ground into powder to obtain hexamethylol melamine powder II. By means of the preparation method, a good technical effect is achieved, and the methodcan be applied to production and application of hexamethoxymethyl melamine.

The invention relates to a hydraulic clamping hand for a bottle cap. The hydraulic clamping hand for the bottle cap comprises a supporting plate, a movable block, clamping jaws, a guiding rod, connecting plates, a hydraulic cylinder and springs, wherein the movable block is matched with the supporting plate in a sliding mode; the clamping jaws are distributed symmetrically and hinged to the movable block; the guiding rod is matched with the movable block in a sliding mode; one end of each of the connecting plates is hinged to the guiding rod, and the other end of each of the connecting platesis hinged to each of the clamping jaws; the hydraulic cylinder is used for pushing the guiding rod to move in the extending process; one end of each of the springs is connected to the movable block, and the other end of each of the springs is connected to the hydraulic cylinder. The clamping jaws are of curved arc-shaped structures which close to each other, and clamping plates with the same curving direction as the clamping jaws are connected to the clamping jaws. According to the hydraulic clamping hand for the bottle cap, structural design is reasonable, operation is simple, using is convenient, the effective contact surface between the clamping hand and the bottle cap is increased, the stability and assembling precision during clamping of the bottle cap are greatly improved, the lengthof the clamping hand is greatly prolonged, the installation of the bottle cap and a wine bottle is facilitated, and the cap pressing of the bottle is facilitated.

The invention discloses an environmentally-friendly stone cutting cooling lubricant. The environmentally-friendly stone cutting cooling lubricant comprises, by weight, 15-30 parts of animal fat, 15-30parts of rosin, 2-10 parts of an alkali, 1.2-3.3 parts of hydroxypropyl methyl cellulose, 0.3-0.8 part of diethylenetriamine pentamethylene phosphoric acid, 1-3 parts of polyferric sulfate and 30-40parts of ethanol. The environment-friendly stone cutting cooling lubricant which utilizes the mutual synergistic effects of all the components has the advantages of effectiveness in prolongation of the service life of a saw blade, increase of the cutting speed, fullness in lubrication of a cutter in cutting, inhibition of dust generation of a slurry dust, completeness in precipitation of stone powder, and cleanness in circulating water; and the environmentally-friendly stone cutting cooling lubricant is free of toxic and harmful substances such as heavy metals and arsenide, so the environmentally-friendly stone cutting cooling lubricant is safer and more environmentally friendly than traditional cutting cooling lubricants. The invention further provides a preparation method of the environmentally-friendly stone cutting cooling lubricant.

The invention discloses a dip angle bearing universal coupling which comprises an inner ring, an outer ring and a sealing cover. A groove is formed in one end of the inner ring, a bulb is arranged at one end of the outer ring and is installed in the groove, a plurality of arc-shaped grooves are formed in the side walls of the bulb and the groove correspondingly, a plurality of cylindrical roller ways are composed of the corresponding arc-shaped grooves in the side walls of the bulb and the groove, the center lines of the cylindrical roller ways are arc curves, and balls are arranged in the roller ways; and the outer ring is sleeved with the sealing cover, and the sealing cover is connected with the opening end of the groove of the inner ring. The dip angle bearing universal coupling has the higher bearing capacity, transmission accuracy, transmission efficiency and high anti-impact capacity; and the service life is long.

The invention relates to the technical field of cable inspection, and discloses rapid cable maintenance and inspection equipment, which comprises a detection case, the detection case is a hollow rectangular box body, and a suspension assembly and a retainer for assisting the suspension assembly to keep stable are fixedly mounted on the top surface of the detection case. The retaining body is fixed on the top surface of the detection case and extends into the detection case, the suspension assemblies are symmetrical front and back by taking the vertical center line of the right side plate as a symmetry axis, a line detection part is fixedly mounted between the two suspension assemblies and on the top surface of the detection case, and an impact piece is fixedly mounted on the right side plate of the detection case. The problems that after the cable is used for a long time and exposed to the outside for a long time, an outer ring insulated wire of the cable is damaged, so that the high-voltage cable needs to be detected and maintained regularly, however, the cable needs to be climbed to the cable when the cable is located at a high altitude and manual detection needs to be carried out, and potential safety hazards of high-altitude falling and electric shock exist are solved. And the inspection efficiency is not high.

Disclosed is a circular comb (16) serves for fastening to a shaft (14), which is rotatable about an axis of rotation (13) in a combing direction (26), of a comber (1) which is intended to comb textile fibers (2) and has fixed drawing-off rollers (7, 8, 9, 10) for the combed textile fibers (11). The circular comb (16) has, on a circular-comb main-body unit (17) having an outer side (18), a combing segment (19) having a plurality of combing bars (22) which are arranged on the outer side (18) of the circular-comb main-body unit (17) and are equipped with outwardly protruding combing teeth (23), the front combing-teeth flanks of which, as seen in the combing direction (26), are each inclined in the combing direction (26), and an aligning segment (20) which is arranged on the outer side (18) of the circular-comb main-body unit (17) and is equipped with a plurality of outwardly protruding aligning elements (25), the front aligning-element flanks of which, as seen in the combing direction (26), are each inclined counter to the combing direction (26), and some of which are arranged one after another as seen in the combing direction (26).

The present invention discloses a dual-grounding device applied to a transformer station guardrail. The device comprises a U-shaped grounding block arranged at the lower end of the guardrail, and the surface, opposite to the guardrail, of the grounding block is provided with grounding wires. The upper end of the grounding wires is fixedly connected with the grounding block through connection bolts and lock nuts, and the connection bolts pass through the guardrail and then are connected with a grounding pole arranged in the guardrail. The lower ends of the grounding pole and the grounding wires are connected with a grounding grid, the upper end of the grounding pole is provided with an upper location boss, and the upper location boss is provided with a spring pin. The middle portion o the grounding pole is provided with a lower location boss which is matched with an annular boss arranged at the lower end of the guardrail, and a jack is arranged between the upper location boss and the lower location boss. A shielding cover is arranged at the external portion, located at the grounding block, of the guardrail. The dual-grounding device applied to the transformer station guardrail employs the double grounding wires to greatly improve the grounding reliability.

The invention provides an antiskid rubber product which is prepared by mixing, peeling and making materials into a stripe. Wave fold line type stripes are arranged on the surface of the antiskid rubber product. The antiskid rubber product is prepared from the following materials in parts by mass: 100 parts of matrix rubber, 50 to 130 parts of fiber, 1 to 2 parts of a coupling agent, 3 to 10 partsof an active agent, 0 to 15 parts of softening oil, 1.5 to 2.5 parts of an accelerator and 1.5 to 2.5 parts of a crosslinking agent, wherein the matrix rubber is one or several in natural rubber, butadiene rubber and nitrile rubber. The invention further provides a preparation method and application of the antiskid rubber product. The surface friction of the product disclosed by the invention is increased, so that a covered product has good antiskid performance. The wave fold line type stripes are arranged on the surface of the rubber product disclosed by the invention, so that an effective contact face of the product in a movement process is enlarged, and the product has good antiskid performance; furthermore, the surface fibers are evenly exposed, so that a strong multi-aspect antiskid function is achieved.