40results about How to "Will not cause a fire" patented technology

The invention relates to a control method capable of preventing a combustible refrigerant from entering an indoor side during shutdown of an air conditioner. The control method comprises the following steps of: controlling a compressor to perform low-frequency operation while receiving a shutdown signal, and judging whether the air conditioner operates in a heating mode or operates in a refrigerating mode; when pressure at an outlet end of the compressor is reduced to a preset value, switching the air conditioner to operate in the refrigerating mode; closing an electronic expansion valve; and when pressure at an inlet end of the compressor is reduced to the preset value, controlling the compressor to stop operation, and closing a solenoid valve. The control method has the advantages that: the refrigerant positioned in the indoor side of the air conditioner can be completely absorbed out and stored in the outdoor side of the air conditioner, so that only a little refrigerant leaves in the indoor side of the air conditioner under a shutdown state of the air conditioner, and therefore, concentration of the refrigerant is extremely small even the indoor side of the air conditioner has a leakage condition, and safety accidents such as a fire disaster are not caused.

The invention relates to a ball float type liquidometer with vernier display. The ball float type liquidometer comprises a ball float chamber and a ferromagnetic spherical floating ball arranged therein, a vernier outside the ball float chamber, a calibrated scale and a vernier guide rail. The vernier comprises magnetic steel, a frame and a rolling system which is horizontally fixed and sleeved in the frame; the rolling system comprises rolling wheels which are provided with radial grooves along a circumferential surface, rolling bearings and shafts; the magnetic steel is disposed between the ball float chamber and the frame and is fixed outside one side surface close to the ball float chamber on the frame, and the magnetic pole of the magnetic steel is right oriented towards the floating ball; the vernier guide rail is sleeved in the frame and is disposed between the magnetic steel and the rolling system; and the rolling system enables the rolling wheels to roll vertically along the vernier guide rail at groove positions through a magnetic coupling force between the magnetic steel and the floating ball. The ball float type liquidometer is simple and scientific in structure, reliable in application performance, easy to manufacture and low in cost, reduces defects in the prior art and effectively meets needs in correlation fields.

The invention relates to a grinding method with the application of the grinding wheel muller in the valve; wherein, the grinding wheel muller comprises a pneumatic motor, a drive rod, a grinding wheel plate, and a plurality of grinding wheel heads. The compressed air drives the pneumatic motor connected with the drive rod through the joint shaft; a driving bevel gear and a driven bevel gear arranged on the lower end of the drive rod are meshed with each other; the universal joint is connected with the grinding wheel on the external part of the body; the grinding wheel heads are arranged at both ends of the grinding wheel. The grinding method applied in the valve can be normally used in the condition of steam, water and wet, and cold grinding is not needed in the high temperature of 400 to 500 DEG C; online grinding can be used when the large valve leaks; grinding wheel heads and transmission regulate rods matched with the sealing surface can be assembled on valves with different specification, and repairing can be used when valve sealing surface leaks. The invention has the advantages of fast grinding, lower material cost, high grinding precision, simple operation, safety and reliability, low failure rate, long time continuous operation under any bad environment, and application for grinding on various valves.

The invention discloses a refrigerator electric damper control device driven by a direct current motor. The refrigerator electric damper control device comprises the direct current motor and a speed reduction mechanism, wherein the speed reduction mechanism is connected with the direct current motor and acts on an irregular gear used for controlling the opening degree of a damper baffle. The refrigerator electric damper control device has the advantages that the direct current motor driven by a direct current power source is adopted to control the damper baffle and is matched with the speed reduction mechanism to form a control device of a refrigerator electric damper. The refrigerator electric damper control device is simple in whole structure, high in safety and convenient to control, and enables the refrigerator electric damper to be driven by the direct current motor instead of a stepping motor.

The invention provides a sound producing device capable of producing sound by using air. The sound producing device comprises an air cylinder, a piston and a gun head. The piston is sleeved with a planar sealing ring which can prevent air circulation of an upper air chamber and a lower air chamber of the air cylinder. The cylinder wall portion, above a protruding table, of the air cylinder is uniformly provided with explosion openings. When the piston is attached to the protruding table, the sealing ring on the piston is right pressed against the inner sides of the explosion openings to seal the explosion openings. The device is wide in application range and can be applied to flammable places such as coal mines and oil and gas fields; the device can even be used in water; the device has economic value, social value and cultural value; selling air firecrackers can bring economic income for employees, enterprises and the government, so that the economic value is obvious; the sound producing device is a safe and environmentally-friendly firecracker, and pollution can be reduced greatly if the device replaces an explosive firecracker, so that the sound producing device is of great social importance; the sound producing device enables people to continue and develop the traditional firecracker setting-off culture without polluting the environment.

The invention provides synthetic water-soluble industrial gear oil and a preparation method thereof. The total amount of water-soluble polyether is 100 parts by weight, 20%-30% of the total amount ofthe water-soluble polyether is added into a product kettle and preheated to reach the temperature of 75-90 DEG C, antifriction antirust additives and copper corrosion inhibitors are metered and addedinto the product kettle, constant-temperature stirring is performed for 25-35 minutes until the antifriction antirust additives and the copper corrosion inhibitors are completely dissolved, the residual water-soluble polyether is metered and pumped into the product kettle, and high-temperature antioxidants, extreme pressure anti-wear additives, chlorinated paraffin hydrolysis inhibitors, hydrogenion catching agents and defoaming agents are sequentially metered and added into the product kettle and uniformly stirred to obtain the water-soluble industrial gear oil. The synthetic water-soluble industrial gear oil is good in use safety and antifriction and anti-wear properties, excellent in water capacity, strong in corrosion resistance, excellent in oxidation stability and heat stability andparticularly applicable to lubrication of a speed reducer gear box working in a water vapor environment, energy is saved, and emission is reduced.

The invention relates to three watercrafts self-viscosity latex product with superior cold tolerance, and its usage. Meanwhile, it offers a manufacturing method of cold tolerance self-viscosity latex product, which can be described as follows: dissolve xylene denatured resin, rosin denatured resin, natural rubber, or synthetic rubber, in order to change its oiliness into watercrafts, and then make it have emulsification and dispersion. One feature of the invention lies in the use of a kind of reactivity emulsifier that can take combined polymerization reaction with monomer; another feature lies in that it acquires the cold tolerance by dissolving xylene denatured resin, rosin denatured resin, natural rubber, or synthetic rubber, in order to change its oiliness into watercrafts, and by making it have emulsification and dispersion. The cold tolerance self-viscosity latex has the advantages such as initial adhesion, high adhesion in winter, fine water resistance, low cost, no evocative fire hazard, more safety, better environmental protection, better guarantee of worker's health, so it can substitute oiliness rubber and solvent form Alec Rubber completely.

The invention relates to a castle, belonging to high-safety residential building. Said invention is similar with basin, which comprises: a frame (1) which is made into ship frame shape via steel plates and can float on the water via cable and anchor (12) fixed on the bank; the bottom of frame has a ballast iron blocks (11); a middle frame (2) in ship frame shape inside the frame (1) which via symmetry left and right bearings (22, 23) is connected to the frame (1); the middle ballast iron block (21) is at the bottom of middle frame; a inner frame (3) inside the middle frame (2) in ship frame shape, which via the front and back bearings (32, 33) is connected to the middle frame (2); the inner ballast iron block (31) is at the bottom of inner frame. Since said invention can float with the water level, which can avoid being flooded.

The invention discloses a fireproof and explosion-proof storage bag with a heat insulation function, and relates to the field of storage bags, the fireproof and explosion-proof storage bag comprises astorage bag body, and the storage bag body is composed of first fireproof cloth, heat insulation material, auxiliary molding material and second fireproof cloth. According to the invention, fire-proof and explosion-proof material and thermal insulation material are adopted to add auxiliary molding material so that shapes of different specifications are formed; multiple materials are integrated toachieve the fireproof, explosion-proof and heat-insulating functions, it is ensured that the product cannot be damaged within a certain time when being thrown on a fire source, the spontaneous combustion phenomenon occurs in the storage bag, the fire source is locked to overflow, the fire source is stopped in the storage bag, a fire disaster cannot be caused, and therefore the fireproof, explosion-proof and heat-insulating functions are achieved.

The invention discloses a health care pillow with an insect repellent function. The health care pillow comprises a pillow inner and a pillow case. A traditional Chinese medicine bag is arranged in the pillow inner. The health care pillow comprises following components 3 to 12 parts of quisqualis, 4 to 8 parts of azedarach, 10 to 22 parts of areca catechu, 4 to 12 parts of stone-like omphalia, 4 to 12 parts of Chinese torreya, 3 to 8 parts of cyrtomium fortune, 12 to 20 parts of field mint, 6 to 10 parts of orange peels, 5 to 8 parts of elecampane, and 6 to 13 parts of cassia seeds. The health care pillow with the insect repellent function has following beneficial effects: the health care pillow is simple and practical; during application, insects are effectively repelled; the health care pillow is non-toxic and causes no damage to a human body; and without smoke and sparks, no fire occurs.

An energy-saving optical fiber lighting system comprises a light source, a primary concave lens, a primary fixing structure, primary lighting optical fibers and secondary concave lenses; the light source is arranged on one side of the primary concave lens; the primary fixing structure is arranged on the other side of the primary concave lens; primary fixing holes are formed in the primary fixing structure; one ends of the primary lighting optical fibers are fixed in the primary fixing holes; a secondary concave lens is mounted at the other end of each primary lighting optical fiber; after primary divergence by the primary concave lens, light from the light source enters the primary lighting optical fibers from one ends of the primary lighting optical fibers and is ejected from the other ends of the primary lighting optical fibers, and then the light is subject to secondary divergence by the secondary concave lenses. The energy-saving optical fiber lighting system achieves the purpose of using one light source to provide lighting for multiple areas; when in use, conductive wire and illuminating lamp are not required, and neither electric leakage nor fire occurs; the advantages of low power consumption, resource conservation, no need for wiring, convenience in maintenance, simple structure, low risk of safety hazard and the like are achieved.

The invention relates to an outboard steering gear of a yacht, including screws, a ball nut, a Left horn, a right horn, a Coupling, a motor and a shield assembly, the screw is composed of a threaded shaft section and a rotating shaft section arranged at both ends of the threaded shaft, the rotating shaft segments at the two ends of the screw are respectively connected with the left horn and the right horn, the rotating shaft segments at both ends are rotatably connected in the bearing chambers of the left horn and the right horn through bearings, the ball nut is connected with the threaded shaft section of the lead screw and is connected with the pull rod through the pull rod connecting plate, The two sides of the ball nut are each connected with a protective cover assembly, the two end rotating shaft segments of the lead screw pass through the protective cover assemblies of the two sides of the ball nut respectively, the motor is fixed on the left horn through a coupling, the rotatingshaft segment of the left end of the lead screw passes through the left horn and is connected with the output shaft of the motor through the coupling; This design has the advantages of simple structure, easy to manufacture and practical and efficient.

The invention discloses a method for simulating fireworks with ultraviolet light or infrared light and a luminescent material. An object coated with the luminescent material is thrown into air, or blown into the air through wind or a fan or dragged and dropped in the air through an unmanned aerial vehicle, then the object coated with the luminescent material and thrown into the air is irradiated with invisible light which is the ultraviolet light or infrared light, and the luminescent material is fluorescent powder. The method has the advantages of being low in carbon, environmentally friendly, safe, convenient, good in fireworks simulating effect, high in brightness, capable of achieving the fireworks effect of various patterns or characters through dragging and dropping of the unmanned aerial vehicle and wide in application range, manufacturing cost is low, repeated recycle is achieved, and a fire is avoided.

The invention discloses a drive motor heat-dissipation device for a mining electric locomotive, and the device comprises a heat-dissipation device housing, gears, transmission shafts, rolling bearings, fan blades, and a rack. A drive motor is disposed in the heat-dissipation device housing, and a drive motor output shaft is provided with the drive motor, the first gear and the first rolling bearing from the left to the right. The first transmission shaft is connected with the third rolling bearing, the third gear, the second gear and the second rolling bearing from the left to the right. The second transmission shaft is provided with the fourth rolling bearing, the fourth gear, the fifth rolling bearing and the fan blades from the left to the right. The first gear is engaged with the second gear, and the third gear is engaged with the fourth gear. The device can be suitable for an occasion with the high gas density, cannot generate a large amount of heat after long-time operation, and can save the electric energy.

The invention discloses a novel secondary short-circuit wire of a current transformer. The novel secondary short-circuit wire comprises a connecting box, a short-circuit wire and a connector lug, theconnecting box comprises a box body, an insulating base, a connector base, a fixing screw, a connecting screw, a connecting plate, an upper fixing plate, a fixing buckle, an upper fixing groove, a lower fixing plate, a lower fixing groove, a wiring hole and a screw hole, the insulating base is fixedly installed on a back plate of the box body, the connector base is fixedly installed on the insulating base, the wiring hole is formed in the middle of the wire holder, the screw hole is perpendicular to the wiring hole and formed in the connector base, the connecting screw is in threaded connection with the screw hole, the connecting plate is fixedly connected with the screw hole through the connecting screw, the lower fixing plate is fixedly installed below the insulating base, the lower fixing groove is formed in the lower fixing plate, and the upper fixing plate is fixedly connected with the lower fixing plate through the fixing bucckle. According to the invention, the problems that anopen circuit risk is caused by false touch of a short circuit wire and the arrangement of a terminal short circuit sheet is not flexible are solved.

The invention discloses a forest fire monitoring device based on a hot air balloon. The forest fire monitoring device comprises a solar hot air balloon, wherein a holding mechanism is provided below the solar hot air balloon, a positioning monitoring mechanism is provided below the solar hot air balloon, a fixing mechanism is provided below the solar hot air balloon, a moving mechanism is providedon the solar hot air balloon, and a limit mechanism is provided below the moving mechanism. The invention has the beneficial effects of using the hot air balloon to fly in the air to monitor forest fires and reduce energy consumption, using solar energy as an energy source to reduce own weight and increase the sustainability of flight with no need to carry fuel through electric heating, heating the air in the hot air balloon before the flight, retracting a limit lever by the reverse rotation of a motor when the hot air balloon can fly to facilitate the hot air balloon to rise, making the hotair balloon advance and steer in the air through the positive and negative rotation of the motor, and positioning by a GPS locator to easily ensure the monitoring range of the hot air balloon.

The invention relates to a ball float type liquidometer with vernier display. The ball float type liquidometer comprises a ball float chamber and a ferromagnetic spherical floating ball arranged therein, a vernier outside the ball float chamber, a calibrated scale and a vernier guide rail. The vernier comprises magnetic steel, a frame and a rolling system which is horizontally fixed and sleeved in the frame; the rolling system comprises rolling wheels which are provided with radial grooves along a circumferential surface, rolling bearings and shafts; the magnetic steel is disposed between the ball float chamber and the frame and is fixed outside one side surface close to the ball float chamber on the frame, and the magnetic pole of the magnetic steel is right oriented towards the floating ball; the vernier guide rail is sleeved in the frame and is disposed between the magnetic steel and the rolling system; and the rolling system enables the rolling wheels to roll vertically along the vernier guide rail at groove positions through a magnetic coupling force between the magnetic steel and the floating ball. The ball float type liquidometer is simple and scientific in structure, reliable in application performance, easy to manufacture and low in cost, reduces defects in the prior art and effectively meets needs in correlation fields.

The invention relates to three watercrafts self-viscosity latex product with superior cold tolerance, and its usage. Meanwhile, it offers a manufacturing method of cold tolerance self-viscosity latex product, which can be described as follows: dissolve xylene denatured resin, rosin denatured resin, natural rubber, or synthetic rubber, in order to change its oiliness into watercrafts, and then make it have emulsification and dispersion. One feature of the invention lies in the use of a kind of reactivity emulsifier that can take combined polymerization reaction with monomer; another feature lies in that it acquires the cold tolerance by dissolving xylene denatured resin, rosin denatured resin, natural rubber, or synthetic rubber, in order to change its oiliness into watercrafts, and by making it have emulsification and dispersion. The cold tolerance self-viscosity latex has the advantages such as initial adhesion, high adhesion in winter, fine water resistance, low cost, no evocative fire hazard, more safety, better environmental protection, better guarantee of worker's health, so it can substitute oiliness rubber and solvent form Alec Rubber completely.

The invention discloses a miniature water fullness alarm and a tea tray, and is characterized in that the miniature water fullness alarm comprises a circuit board, and the circuit board comprises a power supply wiring end CN2, a triode q1, a triode q2, a resistor R1, a buzzer BZ1 and a contact elastic sheet wiring end CN1; the tea tray comprises a tea tray base (1), a circuit board installation groove is preset in the tea tray base (1), the opening direction of the circuit board installation groove faces the outside of a container, and the miniature water fullness alarm is installed in the circuit board installation groove. According to the design of the position of the circuit board, all devices except a contact elastic sheet are not in contact with water; 3v voltage is adopted, no high voltage is generated, and no influence is caused to the human body; and the 40ma current buzzer is extremely low in power consumption and small in driving current, and the signal end is short-circuitedfor a short time without causing a fire hazard.

The invention provides a double vertical die forging hammer. It includes a die forging hammer, a die forging hammer body, and a die forging hammer base; the die forging hammer is mounted on the upper beam, and consists of a die forging hammer shell, a power head cylinder mounted on the die forging hammer shell, and a The piston in the power head cylinder, the piston rod connected to the piston and the storage cylinder installed on the upper beam are composed; the die forging hammer body is installed on the cylinder rod of the die forging hammer head, and the die forging hammer body is installed with a mold; The cross beam and the die forging hammer base are connected by a column; the column is a cylinder liner type column, and an oil and gas separation piston is arranged in the column, and the upper end of the column is connected with the storage cylinder, and between the storage cylinder and the power head cylinder. A one-way valve is arranged on the communication pipe, the pressure relief pipe of the power head cylinder is connected with the upper end of the column, the gas storage tank and the power head cylinder are equipped with an inflation device, and the lower end of the column is equipped with an oil pump. The invention has the advantages of low manufacturing cost, small vibration and noise, safety and reliability, and the like.

The invention discloses a motor heat dissipation device of an electric locomotive. The motor heat dissipation device comprises a cooling device shell, a gear, a transmission shaft, a rolling bearing,fan blades and a rack. The driving motor is installed in the heat dissipation device shell. A driving motor, a first gear and a first rolling bearing are respectively mounted on the output main shaftof the driving motor from left to right; the first transmission shaft is connected with a third rolling bearing, a third gear, a second gear and a second rolling bearing from left to right, the secondtransmission shaft is provided with a fourth rolling bearing, a fourth gear, a fifth rolling bearing and fan blades from left to right, the first gear is meshed with the second gear, and the third gear is meshed with the fourth gear. The device can be suitable for occasions with high gas concentration and can work for a long time without generating a large amount of heat and can save electric energy.

The invention discloses a mosquito-repellent incense safety burning box. The burning box comprises a burning box body (1) and a mosquito-repellent incense support (2), wherein a fire extinguishing bagis arranged in the burning box body (1). The fire extinguishing bag comprises a flammable packaging layer (3) arranged on the inner wall of the burning box body (1) and a fire extinguishing agent (4)arranged in the flammable packaging layer (3). The fire extinguishing bag is arranged at the edge of the inner wall opening of the burning box body (1). The fire extinguishing agent (4) is extinguishing dry powder. The burning box body (1) is provided with a net-shaped protective cover (6) capable of covering the burning box body (1). The mosquito-repellent incense safety burning box can ensure safe use of mosquito-repellent incense and is simple in structure, convenient to manufacture, reliable in performance and low in cost.

Provided are a synthetic industrial gear oil with a water-holding property and a preparation method therefor. The method comprises, with the total amount of the water soluble polyether being 100 parts, taking, in parts by weight, 20-30% of the total amount of a water soluble polyether and adding same to a product kettle and preheating same to 75-90ºC; metering an anti-friction and anti-rust additive and a copper corrosion inhibitor into the product kettle, and stirring same at a constant temperature for 25-35 min, until the anti-friction and anti-rust additive and the copper corrosion inhibitor are dissolved completely; and metering and pumping the remaining water soluble polyether into the product kettle, successively metering a high temperature antioxidant, an extreme pressure anti-wear additive, a chlorinated paraffin hydrolysis inhibitor, a hydrogen ion capturing agent and a defoaming agent into the product kettle, and stirring same uniformly to obtain the industrial gear oil with a water-holding property. The present invention has a good safety in use, good anti-friction and anti-wear properties, an excellent water water-holding capacity, a strong corrosion resistance, excellent oxidation stability and thermal stability, and energy-saving and emission reduction, and is especially suitable for lubrication of the reduction gear box when working in a water vapor environment.

The invention discloses a waste gas treatment system and waste gas treatment method for a setting machine and relates to the technical field of waste gas treatment. The waste gas treatment system for the setting machine comprises a first filtering device connected with an exhaust port of the setting machine, and a gas outlet end of the first filtering device is connected with a fluid suction inlet of an injection pump through a first fan; a working fluid inlet of the injection pump is connected with a liquid outlet of a circulating pump, a fluid outlet of the injection pump is connected with a liquid inlet in the bottom of an emulsification tank, an exhaust port in the top of the emulsification tank is connected with a second fan, and an overflow port in one side of the upper portion of the emulsification tank is communicated with an oil-water separator through an overflow pipe. An oil outlet of the oil-water separator is connected with an oil collecting tank, and a water outlet of the oil-water separator is connected with a liquid inlet of the circulating pump. The problems that an existing setting machine is large in waste gas treatment occupied area, multiple in equipment, high in energy consumption, prone to causing safety accidents such as fire disasters and low in purification efficiency can be solved.

The invention relates to a preparing method for biomass water-based metal detergent and belongs to the technical field of detergent preparing. According to the preparing method, biomass peppers serve as the raw material; pepper oil is extracted through steam distillation, and the pepper oil and diethanol amine are synthesized into pepper oil alkylolamides under the catalysis of sodium hydroxide; a metal detergent base material is prepared through esterification of phosphorus pentoxide and is evenly sprayed onto sodium carbonate obtained after roasting by the aid of a surface active agent; and the biomass water-based metal detergent is obtained after heaping is conducted for a weak. The prepared biomass water-based metal detergent has the extremely good oil dirt removing capability on metal surface, and the oil dirt removing capability can reach 97% or higher; and degrading is easy, fire disasters cannot be caused, and extremely good antiseptic and antirust effects are achieved.

The invention relates to medical health-care equipment, and discloses a moxa-moxibustion de-ashing fire extinguisher. The moxa-moxibustion de-ashing fire extinguisher is provided with a box body and a box cover, and is characterized in that the box body is internally provided with a horizontally-arranged de-ashing net in a suspending manner, wherein the de-ashing net is provided with an outer frame, the outer frame is provided with a plurality of longitudinal reinforcing ribs which form the de-ashing net together with a plurality of de-ashing steel wire strips which are transversely and uniformly arranged, the distance between every two de-ashing steel wire strips is 10mm, and a plurality of semicircular concaves are formed by bending on each steel wire strip, so that a plurality of longitudinal de-ashing groove structures are formed on the de-ashing net; two or more of the semicircular concaves on the same steel wire strip are different in radius, and the radius of each semicircular concave is set corresponding to a kind of moxa-moxibustion; the box body is also internally provided with an end plug for clamping the moxa-moxibustion; according to the moxa-moxibustion de-ashing fire extinguisher, the problems that an existing moxa-moxibustion extinguishing method and device cannot thoroughly extinguish fire and are not safe are solved, and the moxa-moxibustion de-ashing fire extinguisher can be widely used in places such as a family, a moxa-moxibustion shop, a beauty parlor, an institute of traditional Chinese medicine and a health club.

The invention discloses a honeycomb-type warming stove capable of guaranteeing safety and health of old people. The stove comprises a cylindrical stove body, 3-4 supporting legs are arranged at the bottom of the stove body, a honeycomb heating body is installed at the lower portion of the stove body through a supporting rod, several vertical air holes are uniformly distributed in the honeycomb heating body, and spiral resistance wires are installed in the air holes, and are connected with a power switch through a controller at the outer surface of the stove body. A temperature sensor and a temperature-control switch are installed at the outer surface of a protective cover, the temperature sensor and the temperature-control switch are electrically connected with the controller separately, and the temperature sensor is used for automatically adjusting the temperature of the stove; when the temperature of the stove body exceeds the designed maximal temperature, the temperature-control switch is switched on, and a power source is disconnected. The honeycomb-type warming stove capable of guaranteeing the safety and health of the old people has the advantages of being safe, saving energy, and being easy to operate, and beneficial to the health, wherein the maximal temperature is around 1,500 DEG C, the temperature at the upper opening of the stove body is around 500 DEGC, and the heat-transfer efficiency of the warming stove is improved through the convection effect formed by the air holes.

The invention relates to a cursor displayed float-type liquidometer. A float chamber of the cursor displayed float-type liquidometer is made of non-ferromagnetic materials, a float is a hollow ball-shaped float made of ferromagnetic materials, and a graduation ruler is installed outside the float chamber; a cursor comprises a cylindrical magnetic steel with a central hole, a short shaft, a connection rod and a balancing weight, wherein the central hole of the magnetic steel is horizontally located on the axis of the magnetic steel, and magnetic poles of the magnetic steel are distributed along the axial direction or located on the radial inner and outer surfaces of the magnetic steel; the short shaft penetrates through the central hole of the magnetic steel to be fixedly installed, and the connection rod is hinged to the short shaft and capable of rotating around the short shaft; the balancing weight is fixedly connected with the lower end of the connection rod, and the center of gravity of the cursor is guaranteed to be located on the medial axis of the cursor and below the horizontal central line of the magnetic steel; and the outer wall of the float chamber is provided with a plane which is parallel to the axis of the float chamber, and the magnetic steel is in line contact with the plane and rolls on the plane along the axial direction of the float chamber. The cursor displayed float-type liquidometer uses the cursor to replace a buoy and is simple in structure, easy to manufacture, reliable in using, cost-saving and wide in application range.

The invention discloses a flame-resistant carbon-fiber electrothermal paper and a preparation method thereof. The flame-resistant carbon-fiber electrothermal paper is prepared from the following raw materials by weight: 70 to 80 parts of a carbon fiber, 50 to 60 parts of wood pulp, 3 to 4 parts of gelatin, 1 to 2 parts of polyvinyl alcohol, 2 to 3 parts of lignin, 1 to 2 parts of a cross-linking agent TAC, 2 to 3 parts of polyvinylpyrrolidone, 1 to 2 parts of borax, 12 to 13 parts of aluminum hydroxide, 1 to 2 parts of ammonium persulfate, 1 to 2 parts of grape seed oil and 3 to 4 parts of modified mica powder. According to the invention, aluminum hydroxide is added into a formula for the raw materials and has good flame retardation performance, so the electrothermal paper prepared in the invention is safe to use and does not cause a fire hazard; the integral carbon fiber in the carbon-fiber paper is uniformly dispersed, and carbon-fiber paper has good breaking resistance, is hard to tear and damage and can be conveniently processed into planar heat-generating bodies according to different temperature requirements.

The invention relates to the technical field of beef processing, in particular to a processing method of smoked beef. The method comprises the following steps: establishing a smokehouse, processing beef, preparing sauce, selecting and processing smoking materials, curing beef and smoking beef. Beef smoked through the method is good in appearance and quality, small in the amount of hazardous substance, small in harm on human body after being eaten and simple in operation in smoking process, and cannot cause fire, so as to be very safe.