70results about How to "No personal injury" patented technology

The invention discloses an environment-friendly method for prolonging the service life of a twist drill based on heat pipe phase changes, so durability of a standard twist drill with a straight shank can be remarkably improved under a drilling especial for high-speed drilling machining condition. According to the method, a heat pipe theory and technology are brought in, heat pipe phase change heat transfer characteristics are made use of, cutting fluid is not adopted, and the cutting temperature of the main cutting edge and the cutting temperature of the chisel edge part of the twist drill are rapidly lowered with the help of a heat pipe to reduce the abrasion rate of the main cutting edge and the chisel edge part of the twist drill so that the purpose of prolonging the service life of the twist drill is achieved. Heat pipe phase change heat transferring is adopted in the method, so the heat pipe is higher than cutting fluid in heat transfer efficiency; the heat pipe technology is adopted, so the heat pipe is more environment-friendly than cutting fluid, and personal injuries to operation staff do not exist. In addition, the heat pipe adopted in the method is cheaper than the cutting fluid in market price, and therefore manufacturing cost of products of enterprises can be reduced.

The invention provides an interactive anti-hitting training aid. A support frame is fixedly arranged on a base and extends upward, one part of the support frame is wrapped with a first anti-hitting body, and the surface of the first anti-hitting body deforms and generates corresponding restoring force when bearing pressure; one end of a connection rod is rotationally connected to the top of the support frame through a connection structure, the other end of the connection rod is a free end, and the free end can rotate around the connection structure in the horizontal plane; a part of the connection rod is wrapped with a second anti-hitting body, and the surface of the second anti-hitting body deforms and generates corresponding restoring force when bearing pressure. The first anti-hitting body can be used for conventional exercises like punching and kicking, and the connection rod fixed to the second anti-hitting body can rotate so that an interaction function can be achieved, people need to conduct blocking or avoiding actions during punching to avoid the rotary second anti-hitting body, people are not injured when hit by the second anti-hitting body, and the safety is ensured.

The invention relates to a method for manifesting metal surface hidden fingerprints through chemical sedimentation, and belongs to the technical field of fingerprints identification. The method takes copper sulfate solution as the replacement reagent, manifests hidden fingerprints on metals such as zinc, magnesium and general carbon steel, and particularly comprises the following steps: copper sulfate solution is prepared by taking copper sulfate and ultrapure water as raw materials, and the concentration of the solution is mainly depended on the nature of metal substrate material; the hidden fingerprint sample is submerged in the copper sulfate solution, or the solution is dropped on the sample material surface, and reaction is carried out for a period of time; the sample is dried by nitrogen after being taken out, the fingerprints can be detected clearly with the naked eye, and the manifested fingerprint image is gathered through a digital camera. According to the manifesting method, no expensive instrument or fluorescent reagent are need, and the manifesting method is simple to operate and fast to manifest fingerprints, is healthy and eco-friendly, low in cost, and ideal in sensitivity, veracity and repeatability, and has better application prospect in the field of fingerprint identification.

The invention discloses a method for extracting sodium lignin sulfonate from a papermaking black liquor employing sulphur treatment. The method is characterized by comprising the following steps: 1, injecting a black liquor into a reaction circulating tank, pumping the black liquor to the top of a reaction absorption tower by using a pump, and spraying down from a solution distribution sieve at the top; 2, feeding an SO2 acid gas generated by a burner into the bottom of a reaction tower by using an exhaust fan through a pipeline, and generating reverse gas-liquid reaction by a gas inside the tower and the black liquor sprayed down from the top; 3, absorbing SO2 in a cycle to carry out sulfuration reaction, so as to control the pH value to 3.5-4.0; 4, sulfonating lignin and finishing winterization to sink into the bottom of the tank after foam of reaction liquid disappears in a precipitation tank, and discharging upper brown liquid to obtain lignin pulp; 5, pumping the pulp into a filter press to filter the liquid by a pump, baking and packaging after crushing a filter cake, so as to obtain the product. The method is low in cost, safety production is achieved, the liquid after reaction is a sodium sulfite solution, and a pulping material, and the solution after lignin is filtered and pressed can be prepared into an alkaline pulp. Thus, cyclic utilization of resources is achieved.

The invention discloses laser photoelectric fireworks and crackers. The laser photoelectric fireworks and crackers comprise a body and is characterized in that loudspeakers are arranged on the periphery of the body, a plurality of laser emission heads are evenly arranged at the top of the body, and laser emitters are arranged inside the laser emission heads; a volume regulating button, a distanceregulating button, a color regulating button, a sound imitation regulating button and a color system selecting module are arranged on the body. The laser photoelectric fireworks and crackers have theadvantages that various different fireworks forms are written into a program, the program is used to control the laser emitters to emit laser of different colors, different heights and different positons to form different patterns, and the forms and sounds of various fireworks are simulated; the simulated electronic fireworks and crackers can increase festive atmosphere and do not generate smoke and gunpowder smell, and pollution and burden to atmosphere and environments are avoided; in addition, personal injury caused by fire caused by the fireworks is avoided.

The invention belongs to the technical field of sports equipment, and relates to a simple badminton stadium, in particular to a portable badminton court shed for sports. The portable badminton court shed for sports comprises a frame and a cover. The frame comprises a plurality of long strip-shaped beams and columns which are mutually connected, and the cover is arranged above a badminton court in a covering mode. The beams and the columns are saccular, a cavity is formed in each beam, a cavity is formed in each column, the cavities are mutually communicated, each cavity is filled with pressure gas, and both the beams and the columns are made of flexible airtight cloth; the cover is made of airtight cloth, can effectively block wind, is fixedly connected with the beams and the columns, and covers the badminton court in an airtight mode, The portable badminton court shed for sports is low in manufacturing cost, affordable for common people, light and convenient to use, easy to carry, convenient to install, capable of being folded up for storage after being deflated, capable of saving much space, easy to store and high in safety, does not need to be lifted by workers to a high-altitude position for installation, and does not need to be operated by professionals.

The invention relates to an energy-saving unpowered lower opening type tyre vulcanizing segmented mold which comprises a vulcanizing upper mold, a vulcanizing lower mold and a segmented module. The segmented mold is characterized in that the vulcanizing upper mold comprises an upper tapered mold sleeve, the upper surface of the inner side of the upper tapered mold sleeve is fixedly provided with an upper steel ring and an upper tyre side plate, a guide block is arranged on the inner tapered surface of the upper tapered mold sleeve, the vulcanizing lower die comprises a lower segmented mold baseplate and a lower tyre side plate fixedly arranged on the lower segmented mold baseplate, the segmented module is connected to the lower segmented mold baseplate and radially moves through a radial sliding device arranged on the lower segmented mold baseplate, and an inclined guide groove which is matched with the guide block is also arranged on the outer side surface of the segmented module. The segmented mold provided by the invention can not only save energy sources and is convenient for operating, but also reduces the equipment cost and has high operation safety.

The present invention discloses a user terminal. The user terminal employs an audio frequency output structure with the integration of a loudspeaker and a receiver. The user terminal comprises a receiver sound hole arranged at the first side surface of the user terminal; and a receiver leakage hole arranged at the second surface of the user terminal and configured to form a releasing channel for concentrated energy which is too late to release through the sound hole of the receiver, wherein the second side surface is different from the first side surface. According to the invention, the possibility of causing damaging of human ears by a traditional two-in-one loudspeaker is avoided in the hardware design.

The invention belongs to the technical field of preparation technology and vulcanization mold for a V belt of a washing machine and discloses a green preparation technology and a special vulcanization mold for the V belt of the washing machine. The vulcanization mold is mainly and technically characterized by comprising an outer sealed rubber jacket, a bottom mold, inner mold units and a gland, wherein the bottom mold, the inner mold units and the gland form a cylindrical inner mold assembly and an isolation fabric layer is arranged between the inner mold assembly and the outer sealed rubber jacket. In vulcanization, due to the isolation fabric layer arranged between the inner mold assembly and the outer sealed rubber jacket, the defects such as environmental pollution, cooled water chemical pollution, personal injuries and low production efficiency caused by the adoption of a mold releasing agent are avoided, the skidding phenomenon of the V belt in early use is avoided, the quality of the V belt of the washing machine is improved and the service life of the outer sealed rubber jacket is prolonged greatly.

The invention provides a crankshaft box balancing bearing cover oil passage steel ball press fitting tool. The crankshaft box balancing bearing cover oil passage steel ball press fitting tool comprises a base plate. A steel ball press fitting mechanism and a balancing bearing cover positioning mechanism are arranged on the base plate. The steel ball press fitting mechanism comprises a support seat, a steel ball guiding sleeve, a steel ball material storehouse and a steel ball pressing rod. The support seat is fixed on the base plate. The steel ball guiding sleeve is arranged on the support seat in a sleeved mode. A guiding sleeve pipeline with openings at two ends is arranged in the steel ball guiding sleeve. A diameter of the guiding sleeve pipeline is smaller than two times of a diameter of the balancing bearing cover oil passage steel ball. The steel ball material storehouse is fixedly connected with the steel ball guiding sleeve in a perpendicular mode. A steel ball storage pipe cavity is arranged in the steel ball material storehouse. A diameter of the steel ball storage pipe cavity is fit with the diameter of the balancing bearing cover oil passage steel ball. The steel ball storage pipe cavity is communicated with the guiding sleeve pipeline. The steel ball pressing rod is connected with the guiding sleeve pipeline in a sliding mode. The crankshaft box balancing bearing cover oil passage steel ball press fitting tool is convenient, reliable and safe to carry out the work of the crankshaft box balancing bearing cover oil passage steel ball press fitting. Working quality and working efficiency are greatly improved.

The invention relates to a climbing assisting safety device of a construction tower crane. The climbing assisting safety device comprises a climb ladder, two pulleys, a safety rope, a fastening rope, two safety catches and a balancing weight, wherein the climb ladder is vertically arranged at one side in a tower body of the construction tower crane; the two pulleys are respectively supported on a tower body frame at the upper part of the top of the climb ladder by a rotating shaft; the radial center planes of the two pulleys are coincided with each other and are vertical to a cross rod of the climb ladder; the safety rope is wound in grooves of the two pulleys, one end of the safety rope is connected with the balancing weight, and the other end of the safety rope is connected with the middle part of the fastening rope; two ends of the fastening rope are respectively provided with the safety catches; one of the two safety catches can be buckled with a safety belt tied on the waist of an operator of the tower crane, and the other safety catch is buckled with the cross rod of the climb ladder. After the safety rope of the climbing assisting safety device is tied on the operator of the tower crane, the operator of the tower crane can easily climb and freely move under the action of gravity of the balancing weight arranged at the other end of the safety rope; even if four limbs of the operator of the tower crane completely get away from the climb ladder, the body of the operator only falls off slowly, and any personal injury is absolutely not caused.

The invention relates to a machining device for a V-shaped mark of a motor cover cap. The machining device comprises a workpiece fixing component and an impact assembling component, wherein the workpiece fixing component comprises a base plate and positioning pins arranged on the base; the impact assembling component comprises a guide block, an impact block and a spring; the guide block is fixed on the base plate through bolts, the impact block is arranged in the guide block in a penetrating manner, and slides along the guide block and the spring is arranged on the impact block. When the V-shaped mark is machined, a workpiece is fixed on the base plate through the positioning pins, impact force is applied to the impact block, and the impact block moves along the guide block to punch the workpiece to produce the V-shaped mark and then resets by virtue of the force of the spring. Compared with the prior art, the machining device has the advantages of high efficiency and safety, low labor intensity and the like.

The embodiment of the invention discloses a cable manufacturing method. A PCB of a node unit is manufactured, and two ends of the PCB are provided with butt joint parts, and a node unit protector is formed on the periphery of the PCB and between the butt joint parts at two ends. Base material cable unit manufacturing comprises steps: a cable bundle comprising a signal line is manufactured, and butt joint cable cores are preserved at two ends of the cable bundle; each base material cable unit is connected with each node unit, and a cable body is formed, wherein the butt joint parts at two ends of the node unit are respectively in butt joint with the butt joint cable cores at two sides of the base material cable unit; and an outer sheath coating the cable body is formed outside the cable body. By using the cable manufactured by the method in the embodiment of the invention, the cable is able to adapt to construction scenes with harsh environment such as undermine and underground, and requirements on the cable by special environment can be met.

The invention discloses an injection mold for embedding of an automobile sealing strip insert. The injection mold comprises an upper mold plate (1), a lower mold plate (2), an ejection plate (3), a base plate (4) and a sealing strip (7). The ejection plate (3) is located on the base plate (4). The lower mold plate (2) is located between the upper mold plate (1) and the ejection plate (3). An upper mold plate (5) is arranged below the upper mold plate (1). A lower mold plate (6) is arranged above the lower mold plate (2). The lower mold plate (2) is provided with an oblique slide block (8) used for forming the rubber coating part of the front end face of the sealing strip (7), a slide block (22) used for forming the rubber coating part of the inner side face of the sealing strip (7) and a mobile slide block (36) positioning the outer side face of the front end of the sealing strip (7). The upper mold plate (1) is provided with an oblique guide column (33) slidably matched with the oblique slide block (8). By adoption of the injection mold for embedding of the automobile sealing strip insert, personal injury cannot be caused, so that the safety coefficient is high.

The invention discloses a calculating method of a window opener or door opener operation safety limiting value. Based on known actual operation data in a window opener or door opener operation process, a safety limiting value which is greater than or equal to the actual operation data is calculated. The actual operation data in a window opener or door opener stroke comprises initial data when a window opener or a door opener leaves a factory and an operation force value after usage. In the initial data, initial force value data is directly detected through a torque sensor; an initial current or a voltage or power data can be directly detected through a current sensor or a voltage sensor; and the power data can be acquired through calculation and is stored in a control module. By using the method, a difference value between the actual operation data and the safety limiting value keeps in a fixed range so that mechanical and unrecoverable deformation and a personal injury are not generated; and simultaneously, a condition that false triggering is generated because of an extraneous influence is avoided.

The invention discloses a flange with a hole and a safety valve pressure test system based on the flange with the hole. The flange with the hole comprises a flange plate. A duct concentric and coaxial with the flange plate is formed in the position of central axis of the flange plate. An external hole is formed in the side wall of the flange plate and communicates with the duct. By means of the beneficial effects that the flange is convenient to detach and install, the service life of the safety valve pressure test system is prolonged; a pressurization device communicates with a pipeline system in the safety valve pressure test system through the flange plate to conduct safety valve detection, and therefore the pressurization device can be repeatedly detached and installed, regulated overhaul and cleaning of the pressurization device in the safety valve pressure test system are achieved, the installation cost is further reduced, and the installation process is simplified. The gas tightness of the safety valve detection system cannot be influenced by installation and detachment of a pressurization system in the safety valve pressure test system based on the flange with the hole, and the detection result of the safety valve pressure test system is accurate.

The invention discloses a method for measuring ratio of stray light in a spectrometer. The method specifically comprises the following steps: a. a light source and a measured spectrometer are connected by a specific optical fiber and a transmissive optical fiber so that a specific spectrum and a transmission spectrum are obtained respectively; the light source is matched with a service wave band of the measured spectrometer, the specific optical fiber is opaque to the light with a specific wavelength, and the transmissive optical fiber is transparent to the light with the specific wavelength which is in the service wave band; and b. the specific spectrum and the transmission spectrum are compared to obtain the ratio of the stray light of the measured spectrometer at the specific wavelength. The invention also discloses a device for performing the method. The method and the device have the advantages of reasonable design, effective and fast measurement of the stray light ratio, no toxin and no pollution, a plurality of measurable wave bands, stability and convenience, and can be widely applied to detecting the performances of spectrometers.

The invention discloses a crane with a fixing function. The crane comprises a cross beam; the top of the cross beam is fixedly connected with a support base; a first motor is arranged at the top of the support base; an output shaft of the first motor is fixedly connected with a wire releasing wheel; a first traction rope is wound on the wire releasing wheel; the end, far from the wire releasing wheel, of the first traction rope penetrates through the cross beam, and is fixedly connected with a connecting block arranged below the cross beam; and a hanging hook is fixedly connected to the bottomof the connecting block. Through arrangement of the first motor, the wire releasing wheel, the first traction rope, the connecting block and the hanging hook, a weight hoisting effect is achieved; and through arrangement of a fixing block, a rotating shaft, a baffle plate, a connecting ring, a first pulley, a stopper, a second pulley, a second traction rope, a second motor and a wire collecting wheel, a weight fixing effect is achieved, a protecting effect is achieved, the condition of weights accidently and quickly falling to the ground is prevented, the safety risk in the weight maintenanceprocess is reduced, personal injury accidents cannot be caused, and safety and reliability are achieved.

The invention provides firecracker knitting and packaging equipment. The firecracker knitting and packaging equipment comprises a rack, a transmission mechanism arranged on the rack, a charge mechanism which is arranged at one end of the transmission mechanism, a knitting mechanism which is arranged above the transmission mechanism, a packaging mechanism which is arranged at the other end of the transmission mechanism and a discharge mechanism which is arranged at the output end of the packaging mechanism. The charge mechanism is used for loading to-be-knitted firecrackers, the knitting mechanism is used for knitting the firecrackers together, the packaging mechanism is used for pasting and laminating two surfaces of the knitted firecracker, and the discharge mechanism is used for discharging. The firecracker knitting and packaging equipment realizes automatic charging, knitting, packaging and discharging of firecrackers, is relatively small in knitting joint difference, is high in packaging efficiency, does not need to manually and directly touch the firecrackers, and does not cause personal injuries.

The invention discloses a universal tail hoisting tool for hoisting a wind power tower barrel. The tool comprises a fixing rod, an upper bent lever assembly, a supporting rod, a lower lever assembly,a hoisting hook and an adjusting bolt; and a groove-shaped supporting part used for supporting the wind power tower barrel is formed in one side of the fixing rod, the adjusting bolt penetrates through the side wall of the groove-shaped supporting part to abut against a flange of the tower barrel for fixation, the two ends of the fixing rod are hinged to the middle of the upper bent lever assembly and the middle of the lower lever assembly correspondingly, the supporting rod is parallel to the fixing rod and is positioned on the side opposite to the groove-shaped supporting part, the two endsof the supporting rod are hinged to the end part of the upper bent lever assembly and the end part of the lower lever assembly correspondingly, the end, away from the supporting rod, of the upper bent lever assembly is used for allowing a hoisting belt to be installed, the end, away from the supporting rod, of the lower lever assembly is connected with the hoisting hook below the lower lever assembly, and the hoisting hook is connected to any two positions of the tower barrel flange through two connecting pieces. The tool has the advantages of being simple in structure, convenient to operate,reliable in performance, high in efficiency and the like.

The invention relates to a method for preparing zirconium phosphate α-Zr (HPO 4 ) 2 ・H 2 O's method. In this method, 1mol of soluble zirconium salt is dissolved in 4000-5000ml of water, and 1-2mol of 40wt% HF aqueous solution and 2-3mol of 85wt% H 3 PO 4 ; Then stir the mixture at 60-90°C for 2-4 hours; filter after cooling, wash with water until the pH of the washing liquid is ≈ 6, and dry to obtain zirconium phosphate α-Zr (HPO 4 ) 2 ・H 2 O crystals. This method uses the complexation catalysis of a small amount of hydrofluoric acid, and uses the minimum ZrOCl at a low temperature (60-90°C). 2 ・8H 2 O / H 3 PO 4 Raw material ratio, manufacture sub-micron to several micron α-Zr(HPO 4 ) 2 ・H 2 O crystal powder, compared with the prior art, has the advantage of only using a small amount of hydrofluoric acid and concentrated phosphoric acid, which not only saves raw materials but also reduces environmental pollution, while also maximizing production safety; the reaction The reaction temperature is low, the reaction time is short, the energy consumption is low, and the cost is low.

The invention relates to the fields of electrophoresis and discloses a sealing device for exhaust gas of electrophoresis production. The sealing device is used for sealing treatment of the exhaust gas of the electrophoresis production. The sealing device comprises a drying device, a dried exhaust gas treating device, an electrophoresis pretreatment device, an electrophoresis acid gas treating device, a purified gas discharging pipe, and a sealed chamber. The drying device, the dried exhaust gas treating device, the electrophoresis pretreatment device and the electrophoresis acid gas treating device are disposed in the sealed chamber. The sealed chamber, the dried exhaust gas treating device and the electrophoresis acid gas treating device are separately connected to the purified gas discharging pipe. The beneficial effects of the sealing device are that: by sealing the drying device, the dried exhaust gas treating device, the electrophoresis pretreatment device and the electrophoresis acid gas treating device, the exhaust acid gas produced by electrophoresis is collected and treated furthest; the problems that the exhaust gas is not fully collected and the exhaust gas emits into air due to no sealing are overcome; direct pollution to the environment is reduced; and the working environment is improved, thus avoiding damage to bodies of workers.

The invention discloses a novel wood boring machine, and relates to the technical field of wood processing mechanical equipment. A fixed connecting rod is arranged below a rack; tracks are fixedly arranged on the rack; a workbench is slidably connected to the upper parts of the tracks; the middle of the upper part of the workbench is provided with a chute which is internally and slidably connected with positioning bolt pins; an operating motor is arranged on the upper part at one side of the workbench; the front end of the operating motor is provided with a drill bit; the workbench at the other side of the operating table is fixedly connected with a waste chip collecting box via a suction disc. The novel wood boring machine can operate mechanically without manual boring, so that the labor intensity of workers is reduced, and the possibility that workers feel fatigue is low, and the working efficiency of workers is enhanced; the novel wood boring machine cannot injure workers in the using process, and is relatively safe and practical; the waste chip collecting box is arranged, so that waste chips can be conveniently collected; meanwhile, the novel wood boring machine also assists in measuring the length of a wood plate, is low in manufacturing cost, is small in size, can be used for reducing the investment fund of factories, and is suitable for popularization.

The invention relates to a manual green walnut peeling machine, which comprises a feeding cylinder, a cutting cylinder and a peeling cylinder which are located on the same axis from top to bottom and fixedly connected in sequence, a feeding port is formed in the side wall of the feeding cylinder, a pushing rod located on the axis of the feeding cylinder is arranged in the feeding cylinder, and the cutting cylinder is provided with a cutting knife; a long opening parallel to the axis of the cutting cylinder is formed in the side wall of the cutting cylinder, the cutting knife is located in the long opening, the cutting knife can move to change the depth of entering the long opening, a cutting edge of the cutting knife is located in the cutting cylinder and is parallel to the long opening, and a peeling ring is arranged in the peeling cylinder and defined by a plurality of arc-shaped peeling plates. According to the invention, walnuts are filled, the pushing rod is pushed to enable the walnuts to pass through the cutting knife and the peeling ring in sequence, finally green husks of the walnuts are peeled, the peeling efficiency is improved, and pollution of juice to hands is avoided.

The invention discloses a novel woodworking drilling machine convenient for operation, and relates to the technical field of woodworking machinery and equipment. A fixed connecting rod is arranged below a frame, a track is fixed above the frame, a work table is slidably connected above the track, a sliding chute is arranged above the working table in the middle, a positioning pin bolt is slidably connected in the chute, a working motor is arranged above one side of the work table, the front of the work motor is provided with a drill bit, the work table on the other side of the working motor is fixedly connected with a box for collecting scrap by a sucker. The drilling machine can be operated in a mechanical way, does not need artificial drilling, and reduces the labor intensity of the workers, so that the workers are not easy to fatigue and have improved working efficiency. The drilling machine does not cause injury on the workers in use process, and is practical and safe. The box for collecting scrap can conveniently collect scraps. In addition, the drilling machine can assist measuring the length of the board, has the advantages of low cost, small size, reduced investment fund for plants, and is suitable for promotion.

A novel woodworking drilling machine convenient to operate is disclosed. The drilling machine can be operated mechanically, and does not need manual hole drilling, and therefore labor intensity of workers is reduced, workers are not liable to fatigue, the working efficiency of workers is increased, and the drilling machine is free of body harm to workers in an application process and is safer andmore practical. The drilling machine is provided with a scrap collecting box so that scraps can be conveniently collected. In addition, the drilling machine assists timber length measurement. The drilling machine is low in manufacturing cost and low in size, and investment funds of factories are reduced so that the drilling machine is suitable for popularization.

The invention discloses a plant fiber-based high binding force methanal removal water-based paint and a manufacturing method thereof. The water-based paint consists of the following components in parts by weight: 2 to 3 parts of a water-based antifoaming agent, 20 to 25 parts of first cellulose, 30 to 40 parts of second cellulose, 70 to 80 parts of 1200-mesh shajiang black soil powder, 20 to 25 parts of gelatin powder, 400 to 420 parts of silica powder, 75 to 80 parts of an unsaturated radical polyether glycol water solution, 10 to 12 parts of an unsaturated radical polyester polyol water solution, 0.5 to 1 part of a diethylenetriamine cross-linking agent, 2 to 3 parts of a water-soluble sealing agent, 3 to 5 parts of magnesium hydroxide powder, 1 to 1.2 parts of cladophora spores and 20 to 25 parts of water-soluble glycosyl powder. The plant fiber-based high binding force methanal removal water-based paint is water-based, low in surface tension, low in latent heat of evaporation, non-poisonous and pollution-free and high in self-binding force and has a methanal removal function.

The invention provides a portable motor mobile device and relates to the machinery field, which specifically relates to a fast and portable mobile pumping-unit motor, wherein the belt of a jack device can be conveniently replaced. The portable motor mobile device comprises a support frame, a support seat, and a horizontal jack. The support seat is fixed on the support frame through a bolt and a screw nut. The horizontal jack comprises four moment arms hinged end to end, a Z-type swing rod, and a sleeve pipe. The end of the Z-type swing rod is provided with a screw rod. The sleeve pipe is sleeved on the end of the Z-type swing rod. The screw rod penetrates hinge points arranged on two corners of the four moment arms. One end of the sleeve pipe is fixed with one moment arm of one hinge point of the four moment arms. The screw rod is screwed with the screw nut. The screw nut is fixed on one moment arm of the other hinge point of the four moment arms. One person can easily replace a motor belt by using the portable motor mobile device. In addition, the portable motor mobile device is simple in structure, small in size, portable, and easy in production.

The invention discloses a laboratory isolation power supply insulation fault positioning system. The system comprises an isolation transformer and an experiment table. The isolation transformer is successively connected in series with an insulation monitor and an external connection alarm. The external connection alarm is also connected to an alarm display instrument. The experiment table is connected to an experiment control chamber. An experiment control bench is connected to the insulation monitor. The isolation transformer is also successively connected in series with an insulation fault tester and an insulation fault positioning instrument through a current transformer. The experiment table comprises several load circuits connected in parallel with the insulation fault tester. The load circuits are provided with switches and positioning mutual inductors. The positioning mutual inductors of the load circuits are connected to the insulation fault positioning instrument. In the invention, when a fault is discovered, an alarm is emitted rapidly and positioning is performed so that a safe experiment platform is provided for an experimenter; personal safety and equipment safety areprotected; and the system has a certain improvement effect on teaching.