59results about How to "Good safety performance" patented technology

The invention discloses a substation fault information automatic publishing and processing system. The system comprises a substation module, a dispatching data network, a command module, a fault information publishing management module and a user MIS network module, wherein the substation module is connected with the command module and the fault information publishing management module through the dispatching data network; the fault information publishing management module is connected with the user MIS network module; the system is characterized in that the substation module comprises a plurality of substations; each substation comprises an exchanger, a wave recorder, an inductor and a traveling wave distance measurement apparatus; and the wave recorder, the inductor and the traveling wave distance measurement apparatus are all connected with the dispatching data network through the exchanger. According to the system, fault information automatic publishing and information receiving and reading are facilitated; a fault position and a fault cause can be determined in time; the fault information can be effectively processed in time by cooperation with the processing system; the substation can be quickly recovered; and the safety running of the substation is ensured. The system has relatively good safety performance and meets actual usage requirements.

The invention discloses an intelligent door control device, including a controller, a door radar, an outside radar, an optical sensor, a torque sensor, a displacement sensor, an intelligent lock, an inside radar, an outside radar, an optical sensor, a torque sensor, The displacement sensors are all connected to the controller, and the controller is connected to the smart lock. The disclosure of the invention also discloses a control method of the intelligent door. The invention has reliable operation, good safety performance, high integration degree, easy embedded installation and high intelligence degree.

A safe type civil propellant is prepared from, by mass, 2%-8% of coating agent, 40%-60% of main oxidizing agent, 0%-25% of auxiliary oxidant, 25%-40% of fuel and 1%-2% of combustion catalyst, whereinthe coating agent contains liquid rubber and grease. The friction sensitivity and impact sensitivity of the propellant are 0, and the electrostatic spark sensitivity is greater than 120 mJ, excluding1.1-level explosive materials, the danger level is 1.3 level, and because that no metal powder is contained in a formula, and reaction products do not likely ignite oil, gas and coal bed methane and are safe and reliable. The explosion heat of the civil propellant is greater than 4400 J/g, and the gas production is greater than 2.8 mol/100g, can be ignited by electric ignition heads, electric igniters and other civil pyrotechnic equipment, the gases generated by the reaction are mainly nitrogen, carbon dioxide and water steam, the content of CO and nitrogen oxide is very low, and the safe typecivil propellant can be used for oil and shale gas mining and coal mine fracturing.

The invention discloses a liquid gasification burner, which comprises a stove body, an outer gas distribution cover, an inner gas distribution cover and a base, the four walls of the stove body are provided with air inlets, and the stove body is divided into a stove chamber and a gasification chamber by a partition; the outer gas distribution cover and the inner gas distribution cover are arranged in the stove chamber, and the four walls of each of the outer gas distribution cover and the inner gas distribution cover are provided with burning-supporting holes; the base is connected with the gasification chamber through bolts, and the liquid gasification burner also comprises a preheating coil and a gasification coil. Fuel respectively enters the preheating coil and the gasification coil, the heat produced by the burning liquid fuel flowing out of the preheating coil can gasify the fuel in the preheating coil, the gasified fuel enters the gasification chamber via the gas outlet of the gasification coil, and the gas flows out of the gasification chamber via flame nozzles on the partition to enter the stove chamber and burns. The fuel can be sufficiently burnt, the thermal efficiency is high, moreover, fire is evenly distributed, the environment cannot be polluted, and the safety performance is good.

The invention relates to a security door with an internally-mounted padlock. Forked door bolts are respectively arranged on the upper side, the lower side as well as the left side and the right side of an inner cavity of a door leaf; a straight bar of each forked door bolt is sleeved with an offsetting spring, and is sleeved in a guide bearing seat in a penetration mode; two pins of each forked door bolt are sleeved in side wall bolt hole of the door leaf respectively in a penetration mode; a rotary plate bracket is arranged at the left-of-center position of the door leaf; one end of a connecting bar is articulated with a straight bar of each forked door bolt, and the other end of the connecting bar is articulated with a rotary plate; a rotary handle is fastened on the outer end of a central shaft of the rotary plate penetrating through a bracket panel; the end part of the rotary handle is provided with a lock hole for hanging of a padlock; the middle part of the right side of the bracket panel is fixedly provided with a baffle ring matched with the lock hole; the middle part of the rotary handle is provided with a movable pin, and a clamping hole matched with the movable pin is arranged on the bracket panel; and the upper-center position of the door leaf is provided with an arm access hole. The security door with the internally-mounted padlock not only can prevent a door from being opened by a stealer with a technical unlocking method, but also has a simple structure and is low in manufacture cost, and is beneficial to popularization and application.

The invention discloses an integrated universal distiller. The integrated universal distiller comprises a heating device, a cooling device, a shell and a support, wherein the heating device is provided with a plurality of independent heating units; a ceramic electric heater is installed on a furnace frame of a heating box body; a furnace cover and a distilling bottle are arranged on the ceramic electric heater; the distilling bottle is installed in the furnace cover; the shell is provided with a plurality of heating control buttons corresponding to the plurality of heating units, heating state indicating lamps, functional regulating buttons as well as a liquid crystal display; the heating units are connected with the cooling device; the distilling bottle is connected with a condensing bottle connected with a water tank; the cooling device is connected with a control system; a volume bottle is arranged below the condensing bottle of the cooling device. The device integrates heating, distillation, condensation and receiving design; the ceramic electric heater is adopted by the heating device so as to achieve the functions of independent power regulating of a single furnace, automatic circulation of cooling water, automatic control of distillation terminal, automatic sucking-back prevention control and the like; the integrated universal distiller is practical, convenient, saves energy, protects the environment, and solves multiple defects of a traditional device.

The invention relates to a preparation method of a nickel cobalt lithium manganate material. Soluble nickel, cobalt and manganese salts are used as raw materials; a coprecipitation reaction technology is used. The method is characterized in that the molecular formula of nickel cobalt lithium manganate is LiNixCoyMnzO2; the preparation comprises the following concrete process steps that (1) a nickel cobalt and manganese precursor is prepared through coprecipitation reaction; water is added into a reaction kettle device, so that nickel sulfate, cobalt sulfate and manganese sulfate are prepared into a mixed water solution; a sodium hydroxide water solution is added as a precipitant; ammonium hydroxide is added; the coprecipitation reaction is performed under the existence of heating and protection gas; filtering is performed to obtain filtrate and filter residue; the filter residue is cleaned to prepare a nickel cobalt and manganese hydroxide precursor; (2) reaction is performed to prepare a nickel cobalt lithium manganate product; the prepared nickel cobalt and manganese hydroxide precursor is baked and dried, and is then sieved to be fully stirred and mixed with lithium salts into a nickel cobalt and manganese hydroxide precursor and lithium salt mixture; the nickel cobalt and manganese hydroxide precursor and lithium salt mixture is loaded into an earthen bowl; high-temperature firing, crushing, sieving, mixing, sieving and iron removal are performed; packaging is performed to prepare the nickel cobalt lithium manganate material. A lithium ion battery manufactured by the prepared nickel cobalt lithium manganate product has the advantages of excellent safety performance, high-temperature performance and long cycle life.

The invention provides a novel vegetable water extractor which comprises a machine body, a pull-up device, a water extractor body and a power device. The machine body mainly comprises a lower-layer support, an upper-layer support, a reinforcing rid fixing plate, an angle side support, a fixing plate and a material storage hopper. The pull-up device mainly comprises a pull-up shaft, a bottom cover, a bottom cover support, a connecting rod and an air cylinder. The water extractor body mainly comprises a rotating shaft sleeve, an inner container, a shell, a water discharge pipe, a belt wheel and a circular support. The power device mainly comprises a motor, a feed bolt, a motor fixing plate, a belt and a pin shaft. The upper-layer support is provided with a feed device, and the feed device mainly comprises a feed hopper and a support. The angle side support is provided with an air blowing device. The air blowing device mainly comprises an air inlet, an air outlet, a barometer, a gas storage tank and a magnetic exchange valve. A removal device is arranged in the inner container box body. The removal device mainly comprises a scraper, a guide sleeve, a guide pillar, a jacket and a connecting plate. The novel vegetable water extractor is simple in structure, easy to operate and good in safety, reduces manpower demand, lowers labor intensity of workers and is high in production efficiency.

The invention relates to the field of car-mounted equipment, and discloses a car-mounted refrigerator and dispenser all-in-one machine, which comprises a casing, a water supply system and a refrigeration system, wherein the refrigeration system comprises a refrigeration device and a storage chamber. The car-mounted refrigerator and dispenser all-in-one machine has the advantages that the structure is simple, and the two functions of storage and water drinking are integrated, so the separated arrangement of a refrigerator and a water dispenser in a car is not needed, the use is convenient, and a space in the car is saved; the compressor refrigeration is adopted, the refrigeration effect is better than the semiconductor refrigeration effect, and cold water with the lowest temperature being zero degree can be obtained; the car-mounted refrigerator and dispenser all-in-one machine is provided with a low-voltage automatic protection device for preventing the influence caused on the normal starting of the car by too low voltage of a car storage battery due to excessive electricity consumption of a compressor, and the safety performance is good.

The invention discloses a seat-free multifunctional exercise bike. The seat-free multifunctional exercise bike (100) comprises a front wheel (30), a rear double-wheel assembly (80), a frame (10), an operating lever (50), pedal assemblies (20) and a transmission assembly (40), wherein the front wheel (30) and the rear double-wheel assembly (80) are connected to the front and back sides of the frame (10) respectively; the operating lever (50) is fixed on the frame (10); the pedal assemblies (20) are arranged on the middle part of the frame (10); the pedal assemblies (20) are connected with the front wheel (30) through the transmission assembly (40). According to the seat-free multifunctional exercise bike disclosed by the invention, the running direction is controlled by swinging the operating lever leftwards and rightwards, so that the riding fun can be improved; moreover, whole body balance can be trained, and the waist is exercised.

The invention discloses a kind of bullet of forest fire-fighting bomb of Vehicle-mounted remote projection, which includes bullet housing (1) with front bush (2) and explosive sealing apparatus at thefront, hollow tube (3) in the middle, post bush (4) and fire-fighting agent sealing apparatus at the end, the front end of the bullet housing (1) connects with blasting fuse (5) through the front bush (2), the after end of the bullet housing (1) connects with engine (6) through the post bush (4), there is explosive in the hollow tube (3), and in the hollow space between the hollow tube (3) and bullet housing (1), there is filled with fire-fighting agent. The invention has the advantages of simple structure, good security property, good structure hermeticity, convenient operation and storage,low cost, which is favor of being used and maintained by the fire-fighting unit.

The invention discloses a pressure blasting laboratory layout design, which is characterized in that a laboratory comprises a preparation region, a plurality of hydraulic blasting chambers, a control chamber, an article storage region and an office region, wherein the preparation region and the hydraulic blasting chambers are arranged under the ground, the control chamber, the article storage region and the office region are arranged above the ground, the hydraulic blasting chambers are provided with independent or public pressurization equipment rooms, the hydraulic blasting chambers and the pressurization equipment rooms are respectively arranged at the outer side of the preparation region under the ground of the laboratory in a delta shape, the article storage region is arranged at one side of the office region arranged on the ground of the laboratory and faces the preparation region, the control chamber is arranged in the article storage region and faces the two sides of one side of the preparation region, and separation seams are adopted for disengaging the hydraulic blasting chambers and the pressurization equipment rooms from the underground structure of the preparation region. Compared with the prior art, the pressure blasting laboratory layout design has the advantages that the safety performance is good, the occupied area is small, the physical distribution is reasonable, the production operation is more convenient, the requirement of simultaneous different pressure withstanding detection of experiment elements in different specifications can be met, the equipment investment is low, the energy is saved, the emission is reduced, and the economic benefits are good.

The invention discloses interlaced power cell groups. The interlaced power cell groups comprise unit cells and parallel elements, wherein the unit cells are divided into N groups; each unit cell group has M unit cells; unit cells of the two adjacent unit cell groups have a one-to-one correspondence relationship; M unit cells are connected in series successively; both N and M are integers greater than or equal to 2; both N and M are not equal to 2 at a same time; the parallel elements are divided into e groups; a first end of any parallel element of an eth parallel element group is connected between two adjacent unit cells of the eth unit cell group of an Nth group; a second end of the any parallel element of the eth parallel element group is connected between two adjacent unit cells of an (e plus one)th unit cell group; and the N unit cell groups are made to be connected in parallel through the multiple parallel elements. The interlaced power cell groups have great security and high reliability, can assist in managing precisely every unit cell and have a self-balancing function.

The invention relates to an intelligent and highly efficient driving type car door inner opening handle device, which improves the structure of the existing car door inner opening device, introduces a multiple linkage detection electronic control mechanism, and uses a specifically designed motor drive circuit (10) to target all Introduce the electronic control motor (9) for intelligent control to realize electronic control opening, wherein the button (5) is set on the inner surface of the door, located on the side of the rectangular box body (3) facing the direction of the rear of the car, so that through four fingers Pull the L-shaped handle (1) and press the button (5) with the thumb, so that the hand close to the inner surface of the door cannot be controlled, and the normalization of the hand far away from the inner surface of the door to control the door is realized. Turn to the direction of the door, and then realize the normalization of door opening and rear observation, ensuring the safety of door opening.

The invention discloses a gynecological cervical disease examination, diagnosis and treatment device. The device comprises a treatment unit and an examination and diagnosis unit, and the examination and diagnosis unit and the treatment unit are matched with each other. The device can smoothly go deep into the cervix uteri of a patient, and the patient is not scratched easily in a penetrating process, so that safety performance is good, extra injuries to patients can be effectively prevented; and meanwhile, different treatment drugs can be fed into the cervix uteri of the patient, and the treatment drugs fed into the cervix uteri of the patient are evenly distributed, so that the treatment effect is effectively improved. Medical staff can conveniently diagnose cervical diseases suffered bythe patient according to the state of the cervix uteri of the patient. During operation, safety performance is good, an undesirable phenomenon that tissues at the cervix uteri of a patient are punctured suddenly due to improper operation during sampling can be effectively prevented; and a prepared protective layer can effectively improve corrosion resistance, water resistance and aging resistanceof a cylinder, so that the service life of the device is long.

The invention discloses a preparation method of a nutritional fertilizer for preventing occurrence of plant leaf diseases. The preparation method comprises the following steps: mixing and crushing pig bristles, chicken feathers and human hair; screening by a sieve of 200 meshes and taking screened materials to obtain mixed crushed hair; using lipase for enzymolysis of lipid in the hair; then, acid-hydrolyzing the degreased hair in an aqueous solution of dilute hydrochloric acid with a pH value of 4.5-5.5 to obtain a first acid-hydrolyzed amino acid solution; acid-hydrolyzing the degreased hair in an aqueous solution of dilute hydrochloric acid with a pH value of 3.0-4.0 to obtain a second acid-hydrolyzed amino acid solution; using a compound enzyme of bromelain and neutral proteinase for continuing the enzymolysis to obtain an enzymolysis amino acid solution; mixing the first acid-hydrolyzed amino acid solution, the second acid-hydrolyzed amino acid solution and the enzymolysis amino acid solution, and decolorizing with modified activated carbon; and uniformly mixing magnesium sulfate, iron sulfate, zinc silicate, calcium superphosphate, copper carbonate, molybdenum nitrate, urea, monoammonium phosphate, potassium sulfate and decolorized amino acid hydrolyzate, and drying to prepare the nutritional fertilizer. After application of the fertilizer, plants basically do not have a phenomenon of leaf diseases.

The invention relates to a high-temperature and abrasion resistant ball valve of a linkage two-position ball. The high-temperature and abrasion resistant ball valve comprises a valve body, a valve base, a butterfly spring, ball bodies, valve rods and a valve cover, wherein the valve body comprises a left valve body, a middle valve body and a right valve body; two cavities are formed in the middle valve body; the middles of the two cavities are penetrated through, and are provided with two ball bodies; the two ball bodies are provided with two valve rods; oil through holes in the two ball bodies are arranged in parallel; the two valve rods are connected in transmission through a synchronous transmission mechanism; and a control mechanism for operating the rotation of the ball bodies is arranged at the end of one of the two valve rods. In the structure, the two ball bodies synchronously rotate; and meanwhile, a valve channel is opened or closed. When the sealing of one cavity is invalid, the other cavity can be still sealed, so that the higher safety is achieved; and the high-temperature and abrasion resistant ball valve of the linkage two-position ball is specifically suitable for dangerous pipes or environments with toxic liquid and gas.

The invention discloses a hay cutter. The hay cutter comprises a housing, a machine seat, a motor, two hay feeding wheels and a hay cutting device, wherein the housing and the motor are respectively fixed to the machine seat; hay feeding hoppers and hay discharging hoppers are fixed on the two sides of the housing respectively; the two hay feeding wheels are arranged in parallel in an up-down manner and respectively fixed in the housing through shafts, and correspond to the hay feeding hoppers; the hay cutting device comprises a fixed knife, multiple movable knives and a knife rest; the fixed knife is fixedly arranged in the housing and positioned at the rear parts of the hay feeding wheels; the multiple movable knives are respectively fixed at the end part of the knife rest; the knife rest is arranged in the housing through a rotary shaft; and the rotary shaft is connected with the output shaft of the motor through a belt. The key point is that two wheels are arranged on one side of the lower end of the machine seat in parallel, the two ends of the wheel shafts of the two wheels are respectively assembled on the machine seat, and two handles are fixedly arranged at the upper part of the rear end of the machine seat in parallel. The hay cutter has the advantages of flexibility in motion, convenience and practicality, high production efficiency, hay saving, good hay cutting quality, simple structure and the like.

The invention discloses a data information security management method, which comprises the following steps that: A, a user firstly performs identity authentication, enters a data system after the authentication is passed, and locks the data system if the authentication is not passed; B, encrypting the database, and sending the encrypted data to a third-party platform for storage; C, then confirming the identity of the user by the third-party platform, performing storage encryption after confirmation is passed, and if confirmation is not passed, returning the data to the value database; and D,the background records and prompts the database information access dynamic log in real time. The management method adopted by the invention is simple to operate and good in safety performance, and caneffectively prevent data leakage.

The invention discloses a three-dimensional rotation type body builder suitable for an azimuth control mechanism of a folding vehicle. The three-dimensional rotation type body builder is connected between the azimuth control mechanism, a pedal plate and a front wheel of the vehicle. A front folding rod, a rear folding rod, an elastic buckle and a connecting hole formed in the front wheel are included, and the elastic buckle is installed in the azimuth control mechanism. Due to the fact that a rear wheel frame is obliquely connected to the pedal plate downwards at an acute angle relative to the advancing direction of a vehicle body and a rear wheel assembly is a universal wheel, pressure generated by the human body on the vehicle body has component force in the advancing direction of the vehicle body, in cooperation of twisting of the human body, the component force of the pressure in the advancing direction of the vehicle body is larger than friction force of the ground on wheel bodies, the vehicle body advances, and the body building purpose is achieved. The three-dimensional rotation type body builder is flexible in operation, good in safety performance and capable of being used on elegant occasions such as indoor space.

The dumper with two-sided turnable chassis includes hopper, hopper frame, side boards and chassis, and features the hopper or chassis with right and left sides hinged separately to the outsides of the right and the left bottom plates, the right and left bottom plates with inside ends superposed together, the connecting plate in the superposed part with two sides hinged separately to the right bottom plate and the left bottom plate, and the driving unit connected to the lower surfaces of the right bottom plate and the left bottom plate and installed on the chassis. The dumper can damp to two sides of the hopper while running, and has high safety and high damping efficiency.

The invention relates to a magnetic field sterilization device, the device is composed of a pulsed electric field generation system, a pulsed magnetic field action system and a controller, the pulsedelectric field generation system stabilizes a 220V alternating current through a voltage regulator, boosts the voltage through a booster and limits the current through a current limiter to obtain an alternating current, and the alternating current is rectified into a direct current power supply through a rectifier to charge a capacitor; the pulsed magnetic field action system discharges to a coilthrough a capacitor, and a pulsed magnetic field generated by the coil performs enzyme deactivation and sterilization treatment on the brown rice material in the glass tube; and a delay connection function module of the controller is used for adjusting charging and discharging periods, so that charging and discharging are prevented from being carried out at the same time, and line safety is protected. The magnetic field sterilization device is low in voltage, good in safety performance, capable of continuously completing the enzyme deactivation and sterilization process of the brown rice materials and easy to operate; not only is the stability effect of the brown rice improved, but also the advantages of rapid and uniform treatment, small influence on nutritional ingredients, low broken rice rate and the like are achieved.

The invention discloses a rear floor frame. The rear floor frame comprises a rear floor left longitudinal beam and a rear floor right longitudinal beam; a first cross beam, a second cross beam, a third cross beam and a fourth cross beam are arranged between the rear floor left longitudinal beam and the rear floor right longitudinal beam; the first cross beam, the second cross beam, the third cross beam and the fourth cross beam are parallel to one another and are arranged between the rear floor left longitudinal beam and the rear floor right longitudinal beam; and supporting columns perpendicular to the second cross beam and the third cross beam are arranged between the second cross beam and the third cross beam. The rear floor frame is composed of the rear floor left longitudinal beam, the rear floor right longitudinal beam and the four cross beams, and the rear floor left longitudinal beam, the rear floor right longitudinal beam and the four cross beams are welded to one another; the supporting columns are arranged between the second cross beam and the third cross beam; and the impact resistance capability is high, and the safety performance is good.

The invention relates to an LED (Light Emitting Diode) light source with low voltage and energy saving, which comprises a power supply converter and a light emitting body, wherein the power supply converter and the light emitting body are in a split structure; the direct current output of the power supply converter has safe voltage, and the power supply converter is at least correspondingly connected with the positive and negative electrodes of the light emitting body through wires; the light emitting body is formed by connecting a copper-clad plate and multiple paths of LEDs with high brightness in parallel; the LEDs are welded on the copper-clad plate; and the number of each path of the LEDs in series is 1-12. The LED light source provided by the invention has the advantages that a part of the light emitting body has low safe voltage and good safety performance; an accumulator or a wind power or solar energy power supply can be used as a power supply, and the application range is wide; because the light emitting body does not contain the high voltage of a mains supply, the requirements for an application environment are greatly lowered, and the light emitting body can be used indoors and outdoors, thereby greatly expanding the application occasions of the light emitting body; the power supply converter and the light emitting body are independently arranged, and one power supply converter can be configured with multiple light emitting bodies, thereby lowering the cost of the power supply converter; the general assembly structure of the light emitting body is simplified; and the light emitting body is fully utilized in the service life range, thereby lowering the service cost.

The invention discloses a digital chaotic secure communication system. The digital chaotic secure communication system comprises a digital signal generator, a master chaotic system, a signal switcher, a signal encryption device, a first channel, a second channel, a slave chaotic system, a signal decryption device, a first integrator, a second integrator, a discrimination system and a signal display device; the signal switcher modulates digital signals generated by the digital signal generator and master chaotic signals generated by the master chaotic system, the signal encryption device and the signal decryption device encrypt and decrypt modulation signals, the first channel transmits chaotic synchronization signals, the second channel transmits chaotic encrypted signals, and the first and second integrators and the discrimination system demodulate digital modulation signals, and the signal display device displays demodulation signals; and the digital chaotic secure communication system disclosed by the invention solves the problem that the encrypted signals are intercepted and decoded easily during single-channel transmission in general digital chaotic communication practical engineering by utilizing the advantage of high anti-interference ability of digital communication technology, and has better security performance and anti-interference ability.

A static water walking device relates to a water sport and amusement tool. The middle part of a U-shaped bracket of the device is the bottom, and two sides of the bottom are respectively connected with upright stanchions. A front buoyancy device and a back buoyancy device are respectively installed at the upper ends of the two upright stanchions of the U-shaped bracket. An elevating chair is installed above the bottom of the U-shaped bracket. An annular bumper is installed at the middle part of the U-shaped bracket. The back of the front buoyancy device is equipped with a steering wheel. The lower part of the front buoyancy device is equipped with a redirector. The upper part of the front buoyancy device is equipped with a power switch. The back buoyancy device is internally equipped with a motor. The U-shaped bracket under the back buoyancy device is equipped with a propeller. The motor is connected with the propeller by a transmission gear. The static water walking device solves the problem that people who can not swim do sports on the water and that the existing water sport device has complex structure and is inflexible for using.

The invention relates to a shipborne cabin bottom valve. A valve deck is arranged at the upper end of a shell, a valve rod support is arranged above the valve deck, the upper end of a valve rod is arranged in the valve rod support through a valve rod nut, the middle of the valve rod penetrates through the valve deck, sequentially passes through a seal ring, a filler pressing sleeve and a pressing sleeve nut and is connected with the valve deck in a sealed mode, the end of the valve rod is connected with a sealing base together through a split collar and a valve head gland, the bottom of the sealing base is connected with a baffle through a baffle sealing element and tightly buckled on a drain port, a water inlet in the left side of the shell is sleeved with a sealing sleeve in an embedded mode, and a sealing plate located on the right side of the sealing sleeve and tightly combined with the sealing sleeve is hinged to the upper end of the sealing sleeve. Compared with the prior art, the shipborne cabin bottom valve has the advantages of being good in use safety performance and convenient to use, draining water completely and preventing reinjection.

The invention belongs to the technical field of casting machines, and aims to solve the problems that casting products cannot be replaced at will, production arrangement is tedious, adjustment of the opening degree of a pneumatic flashboard is time-consuming and labor-consuming, deviation is easy to occur, a preset inoculation effect cannot be achieved when a stream inoculant is manually added, and the production cost is low due to the fact that an existing casting machine in the market cannot accurately control the adding amount of the inoculant. The automatic quantitative nucleating agent adding system of the automatic casting machine comprises a material storage mechanism and a control system, the material storage mechanism is installed at the top of a rack, a feeding mechanism is installed at the top of the rack, and a weighing mechanism is installed below the material storage mechanism; through the arrangement of the storage mechanism, the feeding mechanism, the weighing mechanism and the inoculation mechanism, automatic quantitative adding of the inoculant in the automatic casting machine is achieved, the functions of adjusting and controlling the adding amount and the adding time and automatically detecting and adding the material level are achieved, the safety performance is excellent, and the casting quality and the production arrangement efficiency are improved.

The invention discloses a child bed based on artificial intelligence. The child bed comprises a bed body mechanism, damping supporting legs, universal wheels, a supporting mechanism, a control mechanism, an air blowing mechanism, a video monitoring mechanism and a mosquito repelling mechanism. The child bed is good in safety performance, reasonable in design, and capable of preventing a child sleeping on the bed plate from rolling down to the ground. The child bed is user-friendly in design, can prevent a child falling asleep from being awakened due to relatively large vibration amplitude in the moving process of the child bed, and can prevent the same body part from being blown all time to cause discomfort, especially the bad phenomenon of headache due to fact that the head is blown all time. The child bed has a remote video monitoring function, especially when a child falls asleep and a caregiver needs to go out for a moment, the caregiver going out can remotely check the real-time state of the child, and the situation that the caregiver cannot go out at ease is avoided. The child bed has a mosquito repelling function, and can prevent a sleeping child from being bitten by mosquitoes.

The invention discloses a metal zipper protective agent. The metal zipper protective agent is prepared from, by weight, 12-24 parts of beewax, 6-10 parts of triethanolamine, 8-14 parts of ethylene glycol, 5-9 parts of sodium metasilicate, 4-7 parts of hydroxyl sodium sulfonate, 3-6 parts of linear alkylbenzene sulphonic acid, 1.5-3.2 parts of amino tri methylene phosphonic acid, 2-4 parts of surface active agent, 2-3.5 parts of oxyfluorfen, 2.5-3.4 parts of N-caprylyl pyrrolidone, 2-4 parts of p-toluenesulfonic acid, 3-6 parts of sodium hypophosphite, 0.5-1.2 parts of diazolidinyl urea, 2-3.5 parts of potassium palmitate, 2-3.2 parts of oxyfluorfen, 12-16 parts of lithium fluoride and 6-12 parts of aluminum nitride. The metal zipper protective agent has the beneficial effects that a zipper is effectively prevented from being oxidized and faded, a protective layer can be formed on the surface of the zipper, safety performance is good, and rust-prevention capability is achieved.