23results about How to "Small running resistance" patented technology

The utility model relates to sewing machine motor technical field, concretely, the utility model relates to a sleeve shaft direct drive motor with winder, including the shell, be equipped with the stator in the shell, be equipped with the rotor in the stator, the hollow rotating shaft is connected to the rotor, the hollow rotating shaft one end is connected with the rotating shaft of sewing machine body, the hollow rotating shaft other end is connected with the fixed needle inner core and hand wheel, be equipped with the hall board with being connected to the stator, be equipped with control element on the hall board, be equipped with magnet on the fixed needle inner core, the magnet is located control element one side, be connected with the winder on the shell, the winder includes the rotating wheel, the rotating wheel is in the winder work with hand wheel and the resistance is tight, this integral motor whole simple and stable structure, easy and fast installation, bearingless design, low cost, solved the problem that sewing machine modification direct drive motor does not have the winder, make it have the winding function and fixed needle function, effectively improved the efficiency of worker sewing.

The utility model relates to a side pressure door and window technology field, specifically disclose a kind of fast installation side pressure device, including transmission rod, side pressure sliding groove seat and pulley assembly, side pressure sliding groove seat upper end is along horizontal sliding fit with transmission rod, side pressure sliding groove seat is fixed in transmission rod after sliding to predetermined position by dowel screw;Through the sliding slot cooperation and dowel screw locking structure of side pressure sliding groove seat and transmission rod, realize punch-free installation and position stepless regulation, significantly reduce the dependence on transmission rod size precision;Pulley assembly is quickly clamped into door and window profile groove preposition by the positioning boss on sliding fixing seat, and the rolling guide in the lateral movable slot of combination limit component forms anti-falling sliding pair, ensure that side pressure sliding seat can only move horizontally along limited stroke;Temporary clamping support of cooperation auxiliary positioning block realizes zero-deviation installation.The present application can improve installation efficiency, reduce operating resistance and completely eliminate the risk of component falling.

This utility model discloses a miniature ball bearing for a cooling fan, comprising an outer ring, an inner ring, a cage, a dust cover, and rolling elements movably disposed between the outer and inner rings. Both the inner and outer peripheral walls of the outer ring and the inner ring have circumferentially formed grooves for the rolling elements to move. Both ends of the inner peripheral wall of the outer ring have circumferentially formed stepped grooves for installing the dust cover. The connections between the grooves of the inner ring and the outer peripheral wall of the inner ring, and between the grooves of the outer ring and the inner peripheral wall of the outer ring, have chamfered edges. A retaining spring is provided in the stepped groove for an interference fit with the stepped groove. The inner wall of the retaining spring abuts against the outer wall of the dust cover, while the outer peripheral wall of the dust cover has a clearance fit with the inner peripheral wall of the stepped groove. The curvature coefficient of the grooves of the outer ring is greater than that of the grooves of the inner ring. This utility model solves the problems of traditional miniature ball bearings, such as increased bearing ellipticity due to dust cover installation leading to out-of-tolerance bearing ellipticity, and assembly damage during rolling element installation leading to unqualified rolling element vibration during bearing operation.

The invention discloses a cooling device for efficient heat dissipation of a gearbox, and relates to the technical field of transmission devices. The radiator fan is rotatably mounted in the radiator main frame and is rigidly connected with the fan motor; one side of the cooling fan is provided with a cooling pipeline which is connected with a temperature control valve, and the other side of the cooling fan is provided with a cooling plate; an air inlet of the radiator is provided with an anti-flocculation net, and an air outlet of the radiator is provided with an air duct which is communicated with the cabin; the heat dissipation plates are of an integral aluminum magnesium alloy structure. The cooling pipeline is a double-layer high-elasticity fiber and steel wire winding rubber pipe; the temperature control valve is of a spring pressure type; the anti-flocculation net comprises an aluminum alloy frame and a diamond net; the surface of the radiator is coated with a graphene-containing coating; the ventilating duct and the exhaust hood are made of military silica gel coating glass fiber cloth; the cooling fan and the like form a penetrating type heat exchange core body; a reinforcing lifting lug is arranged on the main frame; the cooling capacity is guaranteed, the operation stability of the gearbox is improved, and the service life is prolonged.

This application relates to the field of polymer processing equipment technology and discloses an integrated dual-mesh belt melt filtration system, including a mesh belt box assembly, inlet and outlet cooling assemblies, a start-up valve assembly, upper and lower mesh belt filtration assemblies, an anti-backflow assembly, and a winding mechanism on the outlet side. The side mesh belt is drawn from the mesh belt box and enters the filtration assembly, where it undergoes melt impurity removal supported by the side mesh plate. During filtration, a sealing cylinder drives a piston block in conjunction with multiple seals to press the mesh belt, while the cooling assembly condenses and solidifies the seeping material, forming a double mechanical and physical leak-proof seal. During screen replacement and slag discharge, the start-up valve cuts off the material flow on one side, and the anti-backflow tongue plate flips under pressure differential to prevent backflow; the sealing cylinder pulls back the piston block to generate local negative pressure, assisting the winding motor to smoothly pull out and rewind the old mesh belt. This invention achieves smooth screen replacement without stopping the machine, effectively reducing screen resistance and the risk of material leakage, and ensuring the continuous and stable operation of the production line.

According to the operation head of the waste cutting machine, it is guaranteed that the transverse push rod can adapt to the diversity of the thickness and shape of tree trunks to bend the tree trunks, the transverse posture of the transverse push rod is adjusted in the process that the trees are gradually toppled, the transverse push rod is pushed to follow and press the tree trunks, the reaction in the tree trunk toppling process is resisted, and the roller cutter head keeps the stable transverse posture; it is guaranteed that the roller cutter head accurately exerts force on the tree, position deviation and invalid cutting during cutting are reduced, the cutting efficiency is improved, the cutting adaptability of the operation head is improved, the forward toppling angle of the cut tree is controlled, tree toppling is accelerated, and the cutting efficiency is improved. The disassembly and assembly assembly is used for achieving rapid butt joint with or disengagement from the machine frame, the maintenance convenience and efficiency of the operation head are improved, the secondary cutting plate is installed in the machine frame, secondary crushing of chippings is achieved, the chipping uniformity is improved, accumulation of the chippings in the machine frame is reduced, the running resistance of the roller cutter head is reduced, the roller is prevented from being stuck, energy is saved, and the fault rate of the operation head is reduced.

The installation structure of the MBR membrane module assembly comprises a treatment container, a membrane module arranged in the treatment container, and a suspension mechanism, the treatment container is provided with a hoisting frame above the membrane module, the hoisting frame is driven by a reciprocating vibrator to reciprocate in the horizontal direction, the suspension mechanism comprises four hoisting arms, the upper ends of the hoisting arms are respectively hinged to the four corners of the hoisting frame and rotate along the reciprocating direction of the hoisting frame, and the lower ends of the hoisting arms are respectively hinged to the top frame of the membrane module and rotate along the reciprocating direction of the hoisting frame, and the combination constitutes the installation structure of the MBR membrane module assembly. The MBR membrane module assembly is simple in structure, low in transformation cost, is subjected to scouring with water body through rapid reciprocating motion, achieves the purpose of removing activated sludge adsorbed on the surface of the membrane module, and effectively reduces energy consumption.

The utility model relates to the technical field of radial-flow fans, and discloses a single-phase alternating-current radial-flow fan which comprises an air outlet box, a filter plate is slidably connected in the air outlet box, a handle is fixedly connected to the upper surface of the filter plate, clamping beads are slidably connected in the filter plate, the outer walls of the clamping beads are clamped in the air outlet box, and the outer walls of the clamping beads are fixedly connected to the air outlet box. Limiting columns are fixedly connected to the outer walls of the clamping beads, springs are arranged on the outer walls of the limiting columns, one ends of the springs are fixedly connected to the outer walls of the clamping beads, the other ends of the springs are fixedly connected to the interior of the filter plate, and a supporting assembly is arranged on the outer wall of the air outlet box. According to the air filter, the air outlet box, the filter plate, the handle, the clamping beads, the limiting columns and the springs are matched with one another, so that the filter plate can be quickly disassembled, dust blockage can be avoided by regularly disassembling and cleaning the filter structure, the running resistance of the fan is reduced, and the service life of the fan and the filter screen is prolonged.

This utility model discloses a sludge scraper with an anti-winding structure, relating to the field of sludge scrapers. It includes a sludge scraper structure with several mounting brackets symmetrically fixed in pairs. A rotatable cutting structure is rotatably mounted on each of the two symmetrically arranged mounting brackets. The rotatable cutting structure consists of a mounting base rod, a mounting shaft, a T-shaped insert strip, and cutting blades. By setting mounting brackets on the main support and rotatably mounting the rotatable cutting structure (consisting of the mounting base rod, mounting shaft, T-shaped insert strip, and cutting blades) on the mounting brackets, when the sludge scraper is working, the force generated by the water flow and the scraper's own movement can drive the rotatable cutting structure to rotate around the mounting shaft. During this process, the cutting blades can cut fibrous impurities and banded pollutants that are in close contact with the water, breaking them into short segments or small pieces, effectively preventing these substances from winding around the main support of the sludge scraper.

The application provides an underwater propulsion device, comprising: a ring-shaped fairing and a ring-shaped casing connected with each other, and a power assembly arranged in the ring-shaped casing; a blade assembly, which is in transmission connection with the power assembly; and a propeller guide pipe, which is arranged at one end of the ring-shaped casing away from the ring-shaped fairing and at least partially sleeved on the outside of the ring-shaped casing; wherein the power assembly is internally formed with a first channel for fluid circulation, and the propeller guide pipe and the ring-shaped casing are formed with a second channel for fluid circulation; and the application solves the technical problem that the blades of the existing underwater propulsion device often increase the overall motor size to meet the performance requirements when facing large power demand, thereby increasing the occupied space of the device and further increasing the manufacturing cost of the underwater propulsion device.

The utility model relates to a sliding and telescopic linear door with composite transmission structure, belonging to the technical field of gate. The linear door is composed of fixed vertical column frame, starting fixed door row and at least two mobile door rows arranged in sequence. The door row grid of door row is fixedly connected with the grid support frame, and the door row grid of mobile door row can pass through the hollow part of the grid support frame of the front door row. The transmission structure adopts composite mode, and the starting fixed door row and the adjacent first mobile door row are moved through the driving device matched with the meshing of rack and driving gear. The driving devices of the upper and lower half ring clamping devices are followed through the traction rope ring between each mobile door row, and the same direction equidistant synchronous movement is realized. The utility model has the advantages of saving space, stable operation, convenient maintenance, high safety and the like, effectively improves the stability and reliability of door body operation, and reduces the use cost.

The utility model provides a high-zinc solid waste recovery device, and relates to the technical field of solid waste resourceful treatment. The device comprises a base and a device body, the device body comprises a microwave pyrolysis box, a zinc steam negative pressure trapping box, a multi-stage condensing box and a tail gas purifying box which are sequentially communicated, a spiral feeder and a conveying pipeline which are communicated are arranged in the microwave pyrolysis box, a magnetron structure is arranged on the spiral feeder, and the conveying pipeline is communicated with the microwave pyrolysis box. A negative-pressure flow guide cover and an airflow flow guide box are arranged in the zinc steam negative-pressure trapping box; and the multi-stage condensation box comprises a first condensation box and a second condensation box. The mode of combining microwave pyrolysis, negative pressure trapping and multi-stage condensation is adopted, zinc-containing flue gas is led out to recover metal zinc through the heat exchanger, the problem of unsmooth operation of the smelting furnace caused by zinc enrichment is solved, the operation resistance of the furnace is reduced, the problem of smooth production is solved, and the purpose of saving energy is achieved.

This invention discloses a cable protection box for cables passing through a seismic isolation layer, relating to the technical field of cable protection boxes. It includes a box body with a cable outlet at the top and a cable inlet at the bottom; a shaped truss fixed to the upper part of the box body, with a cable passage gap formed between its top surface and the top surface of the box body; the center of its top surface protrudes upward to form an arc-shaped mounting surface, on which a cable fixing assembly is mounted; a shaped bracket fixed to the lower part of the box body and located directly below the shaped truss, extending horizontally and aligning with the length of the truss; the center of its top surface is recessed downward to form an arc-shaped support surface; the cable outlet is horizontally located to the side of the arc-shaped mounting surface and the arc-shaped support surface. This invention, through the cooperation of the arc-shaped mounting surface and the arc-shaped support surface, forcibly locks the bending radius of the detour section by the geometric dimensions of the arc surface, and the redundant buffer section is supported by the concave arc contour and maintains a smooth arc shape, resulting in strong seismic resistance and meeting the cable bending curvature requirements.

The present application relates to the field of press, disclose a kind of press slide block mechanism, it includes along the sliding block of machine body, crankshaft, main connecting rod, swing arm, thrust link and force amplification switching assembly, swing arm two ends are respectively hinged with main connecting rod and thrust link, and the lower end of thrust link is movably connected with the top of sliding block. Force amplification switching assembly is automatically switched according to the connection state of sliding block and thrust link according to the working condition of sliding block: when stamping die head contacts workpiece, it drives both rigid connection, at this time, thrust link is vertical state, and main connecting rod and swing arm are inclined state, and force amplification stamping is realized by lever principle;When sliding block idle stroke lifts, the component makes both into floating connection, and idle resistance is greatly reduced. The present application is simple and reliable in structure, effectively realizes energy saving and the promotion of output force. The present application force amplification swing arm assembly constitutes lever structure, can amplify the force transmitted by main connecting rod;At the same time, when idle motion, it has the effect of high efficiency energy saving.

The utility model discloses a precise planetary reducer for a servo ring rolling mill, which relates to the technical field of reducers and comprises a first outer shell, a second outer shell is arranged on one side of the first outer shell, and the first outer shell and the second outer shell are fixedly connected through a plurality of bolts and nuts. An input shaft is arranged on the inner side of the first outer shell, the inner wall of the first outer shell is connected with the input shaft through an input rotating bearing, an auxiliary sun gear is fixedly arranged at the inner end of the input shaft, a main sun gear is arranged on the inner side of the second outer shell, and the auxiliary sun gear and the main sun gear are connected through a fixed rotating shaft. A gear ring is fixedly arranged on the outer side of the main sun gear and the inner wall of the second outer shell. The input shaft is subjected to limited rotation through the input rotating bearing, the running resistance during rotation of the input shaft is reduced, the input shaft is also prevented from being in contact with the inner wall of the first outer shell, and the auxiliary sun gear and the main sun gear are arranged in a matched mode, so that redundant space in the second outer shell is filled with lubricating grease.

The invention relates to the technical field of conveying equipment, in particular to an air cushion type conveyor which comprises a machine box, a conveying belt is arranged in the machine box, an air chamber is further fixedly installed in the machine box, a disc groove is formed in the top of the air chamber, and the conveying belt is provided with a bearing belt located at the top of the disc groove and a return belt located below the air chamber. A mounting frame is arranged in the case below the return belt, the mounting frame is driven by a telescopic component to lift, a collecting tank with an opening in the top is movably mounted on the mounting frame, a cleaning shaft driven by a cleaning motor to rotate is mounted in the collecting tank, and bristles used for cleaning the bottom of the return belt are arranged on the cleaning shaft; a collecting opening is formed in the bottom of the collecting groove and connected with a dust collector through a pipeline. And after the conveying belt is cleaned, the mounting frame descends to drive the bristles to be separated from the bottom of the return belt.

The application discloses a kind of carriage cleaning device, including mounting bracket, two vertical brush assemblies and horizontal brush assembly, vertical brush assembly includes sliding seat, hinged seat, vertical brush unit, first elastic member and second elastic member, two sliding seats are along the first direction slidingly arranged in mounting bracket, and are arranged along the first direction, hinged seat is hinged to sliding seat around vertical axis, first elastic member is arranged between hinged seat and sliding seat, vertical brush unit is movably arranged in hinged seat, second elastic member is arranged between vertical brush unit and hinged seat, horizontal brush assembly includes horizontal brush unit and third elastic member, horizontal brush unit is movably arranged in mounting bracket, and third elastic member is arranged between horizontal brush unit and mounting bracket.The carriage cleaning device of the application, vertical brush unit is more adaptively fitted in the corner position of the side wall and bottom end of carriage, and horizontal brush unit is more adaptively fitted in the inner bottom surface of carriage, so as to not only improve the cleaning effect, but also reduce the running resistance, avoid damaging the carriage, and also protect the carriage cleaning device itself.

The utility model provides a gas lifting disc structure, which relates to the technical field of gas-liquid separation equipment and comprises a box body, the bottom of the box body is hollowed out, wing plates are upwards arranged on two opposite sides of a top plate, one end of each wing plate is flush with a side plate of the box body, the other end of each wing plate extends out of the other side plate of the box body, and the two wing plates and the top plate form a top collecting tank; one or more layers of side collecting grooves are formed below the two wing plates from top to bottom, and side plates of the box body from the lower edge of each wing plate to the groove bottom line of the lowermost layer of side collecting groove below the wing plate are hollowed out; the groove bottom line and the wing plate above the groove bottom line are located in the same vertical plane, the two ends of the groove bottom line are flush with the two ends of the wing plate above the groove bottom line, one end of the groove bottom line abuts against the side plate of the box body, and the other end of the groove bottom line inclines downwards and extends out of the other side plate of the box body; and the notch is fixedly connected with the side collecting groove. According to the utility model, spraying cooling water is efficiently prevented from entering the desulfurization slurry tank, and purified flue gas smoothly flows out of the absorption tower.

This utility model discloses a shuttleless shuttle frame assembly, belonging to the field of plastic weaving, which solves the problem of instability during the circular motion of a shuttleless shuttle. The technical solution mainly includes a shuttleless shuttle, an upper frame, a lower frame, and support rollers connecting the upper and lower frames. Multiple support rollers are distributed circumferentially along the frame assembly, forming a circular track for the shuttleless shuttle to run on. The outer circumferential side of the support rollers has a concave limiting groove with an upper limiting surface and a lower limiting surface. The shuttle bottom plate of the shuttleless shuttle has protruding limiting protrusions that extend into the limiting grooves and contact the upper and lower limiting surfaces respectively to achieve vertical limiting. There is a gap between the bottom surface of the shuttle bottom plate on both sides of the limiting protrusions and the outer circumferential side of the support rollers. This utility model is mainly used to effectively constrain the vertical displacement of the shuttle and improve operational stability. This utility model also provides a shuttleless circular loom using the above-mentioned shuttleless shuttle frame assembly.

This invention discloses a high-efficiency catalytic conversion device and method for CO2 in lime kiln tail gas of steel plants. The high-efficiency catalytic conversion device for CO2 in lime kiln tail gas of steel plants includes a tail gas collection unit, an impurity adaptive pretreatment unit, a waste heat classification and utilization unit, a CO2 catalytic conversion unit, a product separation unit, and a circulation regulation unit arranged sequentially along the tail gas flow direction. The impurity adaptive pretreatment unit has a composite filter bag dust removal module that can remove dust and SO2 from the tail gas and a priority oxidation reforming module that can oxidize part of the CO in the tail gas to CO2. The waste heat classification and utilization unit divides the tail gas waste heat into three levels through a heat exchanger and a heat distribution controller. The low-temperature waste heat is used for preheating before the CO2 catalytic conversion of the raw material gas, the medium-temperature waste heat is used for reaction heating in the methanation reactor, and the high-temperature waste heat is used for electrolysis power supply in the solid oxide electrolysis cell. This can realize the on-site high-efficiency capture and high-value conversion of CO2 in lime kiln tail gas, which is very suitable for the existing energy conditions of steel plants.

The utility model belongs to the technical field of curtains, and particularly relates to a low-resistance curtain rail sliding mechanism which comprises a left mounting seat and a right mounting seat, a guide rail is arranged between the left mounting seat and the right mounting seat, a servo gear motor is arranged on the left mounting seat, and the output end of the servo gear motor penetrates through the left mounting seat and is provided with a driving wheel. A driving wheel is movably arranged on the left mounting seat, a driven wheel is movably arranged on the right mounting seat, the driving wheel and the driven wheel are connected through a belt, a first clamping head and a second clamping head are fixed to the belt, and automatic opening and closing of the curtain can be achieved by arranging a transmission system composed of a servo gear motor, the driving wheel, the driven wheel and the belt and matching connection of the clamping heads and the sliding sleeves; the guide rail is made of hollow aluminum alloy and is provided with a polytetrafluoroethylene antifriction coating, and balls are arranged on the inner side of the sliding sleeve, so that the running resistance is greatly reduced; the V-shaped movable connecting rod ensures the running stability of the curtain; by arranging the rubber shock pad, vibration and noise are reduced, and the use experience is improved.

This utility model relates to the field of environmental protection equipment technology in the thermal power industry, and discloses a net-zero emission dust removal system for the thermal power industry. It comprises a rotary pulse dust collector body, a PPS ultra-low emission filter bag assembly, and an intelligent control system. It adopts a 360° continuous rotating jet cleaning structure, combined with gradient-density arranged PPS ultra-fine fiber filter bags, forming a dynamic filtration-regeneration synergistic cleaning mechanism. A multi-stage flow guiding and distribution device is set at the front end of the dust collector inlet to achieve uniform distribution of flue gas. Combined with an adaptive cleaning control system based on differential pressure feedback, the dust removal efficiency stably reaches over 99.99%, and the outlet dust emission concentration is ≤2mg / m³. The modular housing design achieves ultra-low emission targets while reducing system operating resistance by 40%, extending filter bag lifespan to over 5 years, and reducing overall energy consumption by 20%-30%. This provides the thermal power industry with a net-zero emission solution integrating high-efficiency dust removal, energy saving, and intelligent operation and maintenance.

The application discloses a waste gas collecting and processing device for manufacturing plush toys and relates to the technical field of waste gas treatment.The waste gas collecting and processing device comprises a neutralizing frame and a fan, a driving assembly for providing power is arranged on one side of the neutralizing frame, the driving assembly comprises a driving motor, a driving roller, a connecting shaft and a support frame, the driving roller is installed at the output end of the driving motor, and the connecting shaft is arranged at the middle of one side of the driving roller.The waste gas collecting and processing device for manufacturing plush toys can realize three anti-blocking measures of filter screen rotation, reverse air blowing cleaning and vibration shaking of impurities simultaneously through power distribution of the driving assembly, and the synergetic effect of the internal spring and the fixed block of the auxiliary disc can clean the plush fibers, paint residues and other impurities attached to the surface of the filter screen in time, completely solve the problem that impurities in the waste gas of plush toy manufacturing easily block the filter screen, avoid poor waste gas flow and low processing efficiency caused by filter screen blockage, ensure long-term continuous and stable operation of the device, and reduce the frequency of shutdown maintenance.