45results about How to "Solve persistent problems" patented technology

The invention relates to medicine, and particularly discloses Chinese medicinal watered pills for treating rheumatoid arthritis and lumbar disc herniation. The Chinese medicinal watered pills are prepared from roots of rehmannia, rehmannia glutinosa, angelica sinensis, caulis spatholobi, epimedium herb, Chinese pyrola herb, cistanche deserticola, davallia mariesii, fried semen raphani, radix ginseng rubra, gentiana macrophylla, rhizoma corydalis, astragalus, deerhorn glue, glue of tortoise plastron, ligusticum wallichii, fried white mustard seeds, spina gleditsiae, gastrodia elata, medlar, clematis roots, pseudo-ginseng, yams, hawthorns, eucommia ulmoides, herba taxilli, geranium wilfordii, paniculate swallowwort roots, Siberian cocklour fruits, aristolochia mollissima, Japanese knotweeds, licorice, ovientvine, kadsura pepper stems, Japanese honeysuckle stems, asarum sieboldii, aspongopus chinensis dallas, scorpio, centipedes, red snakes, earthworms, bombyx batryticatus, honeycombs, leeches, geckos and eupolyphaga. The Chinese medicinal watered pills have significant effects on scapulohumeral periarthritis, cervical spondylosis and a muscle and bone disease hyperostosis, which are caused by insufficient anti-pathogenic energy, phlegm damp and extravasated blood, can exist in oral dosage forms of decoction, dropping pills and the like, can also be processed into ointment, and have good effects.

The invention relates to a network and an electronic terminal special for education, which comprises a network terminal device, a server facility and a network connection device, wherein, the network terminal device is connected with the server facility and interconnected by the network connection device; the server facility is used for conserving the content of mostly all or all textbooks used by students every semester in one or more media formats; the network terminal device is used for downloading the content of mostly all or all textbooks used in every semester from the server facility by the network connection device and then transmitting the downloaded content to the U disk with a large volume for conservation through the USB interfaces on the network terminal device, or uploading various data to the server facility through the network connection device, or being operated by students and teachers in class to show the in-class textbook content for learning the course, or being operated in class to show the content of examination papers for answering the examination papers.

The invention discloses transportation of equipment for late subway construction and particularly relates to a safety efficient incline hoist transportation system for subway construction and a setup method thereof. The system comprises a rail, a rail vehicle, and a traction winch and is characterized in that the rail is an elevated rail made by welding a steel frame and channel steel; the rail vehicle is composed of a wedged frame and a horizontal container disposed on the frame; the rail vehicle is at least provided with a set of automatic fall-proof mechanism and surface brake; an elastic buffer below the wedged frame and a traction rope form a flexible traction mechanism; a permanent magnet coupling mounted between a motor of the traction winch and a gear reducer serves as a coupling. The system has the advantages that the system is safe and efficient, low in investment, high in output and high in adaptability, the problem in subway tunnel construction is solved, economic and social benefits are great, and the system has promising application prospect.

The invention discloses biomass coal-water slurry prepared by waste leachate and domestic sludge and a preparation process thereof, aiming to provide biomass coal-water slurry with low cost which combines the energy-saving and emission-reducing with environment management and a preparation method thereof. The invention adopts coal, domestic sludge, waste leachate and additives as raw materials to prepare the biomass coal-water slurry which can replace fuel for use by mixing, grinding, homogenizing and filtrating the raw materials, thus saving energy effectively, reducing cost greatly, realizing good management function on the urban environment and reaching the aims of promoting the economic and environmental health and sustainable development. The invention can be widely used in the fields of fuel replace burning for industrial boilers, power station boilers and industrial furnace, the field of urban environmental management and the like.

The invention is a drug to cure lumbago and skelalgia, composed of 38 Chinese medicines whose main components includes: angelica, Ligusticum wallichii, radix paeoniae alba, radix achyranthis bidentatae, Banks rosa, uncaria stem with hooks, chuanqiang, full scorpion, pawpaw, medlar, Eupolyphaga sinensis walker, , pericarpium citri reticulatae viride, Radix astragali, rhizoma cibotii, Aconite root, safflower, Doubleteeth pubescent angelica root, cinnamon, chuanduan, drynaria rhizome, slenderstyle acanthopanax root, Medicinalindian mulberry, etc. It can have curative effect with 1-3 months, in spite of lumbago and skelalgia, or all diseases caused by wind-cold damp.

A flow adjustable type timer is formed by connecting a mechanical timer and an electromagnetic pump in series. The flow adjustable type timer is characterized in that a roller of a triggering bump 21eof an adjusting controlling rod 21d is a magnetic rolling column body; a gear bump 21g arranged on an adjusting controlling handle of the adjusting controlling rod is a protruded body containing a cubic curve with impact resisting property; in case of adjusting flow, a potentiometer can be simply rotated, and an electromagnetic pump coil connected to a potentiometer Rw and a diode can be changed;the voltage and the current in absorbing of a soft magnetic valve element change through coils of the potentiometer and the diode, thus the flow changes, and as a result, the flow adjustable timer isformed; a valve overflowing hole in a flexible main control valve element (21) is pentagonal; a wedge filtering sheet forms a 45-degree contact angle in order to be close to Marangoni effect; a microthrough hole is drilled through laser; a fatigue-free alloy coating is plated by a vacuum coating technology; and a micro laminated composite material is manufactured by electronic printing.

The invention provides a secondary sludge thermal hydrolysis treatment method and device. The secondary sludge thermal hydrolysis treatment method includes the steps that first step, steam is injected into a primary sludge pyrolysis kettle, stirring is performed to change sludge into pyrolysis slurry, and the pyrolysis slurry is discharged into a secondary slurry pyrolysis tank; second step, a lime agent is added into the secondary slurry pyrolysis tank in advance, and organic matter which is not easily hydrolyzed is further subjected to pyrolysis by the pyrolysis slurry under the effect of calcium hydroxide; third step, the pyrolysis slurry is cooled to ordinary pressure and the temperature of 100 DEG C. The secondary sludge thermal hydrolysis treatment method and the device have the advantages that the steam using amount is decreased by 40%, more soluble sugars and proteins are produced, the biodegradability of the thermal hydrolysis slurry can be improved from 0.25 to 0.54, the method does not adopt steam discharge and pressure relief, no bad smell is produced, the big and difficult problem of bad smell production in the sludge treatment process is solved, and the method saves the steam discharge time of a reaction kettle and is high in production efficiency compared with a traditional thermal hydrolysis process.

The invention relates to a pleurotus ostreatus cultivation substrate and a preparing method thereof. The cultivation substrate comprises following components: 20-60 parts of traditional Chinese medicine dregs, 3-6 parts of straw, 1-3 parts of quick lime, 1-3 parts of gypsum, 0.5-1 part of cane sugar and 0.2-0.5 part of three-dimensional nutritional factors. The preparing method includes following steps of: adding the medicine dregs and the straw into the quick lime, stirring, exposing in blazing sun for 4-5 days, smashing, sieving to obtain a main material, adding water into the main material and auxiliary materials including the gypsum, the cane sugar, and the like, stirring uniformly, spraying with the three-dimensional nutritional factors, stacking, pre-wetting for 1-3 h, stirring again, packing, performing atmospheric pressure steam sterilization for 8-12 h after packing is finished, and cooling naturally to obtain the pleurotus ostreatus cultivation substrate. The cultivation substrate and the method are advantageous in that, waste materials are turned into things of value, the cultivation cost is saved, quality of edible mushroom products is improved, and considerable economic benefit is brought to planters and Chinese patent medicine enterprises.

Disclosed are a high-barrier composite film for a vacuum heat-insulation plate and a method for manufacturing the high-barrier composite film. The high-barrier composite film is characterized in that two glass fiber cloth layers are compounded on the outermost side of a high-barrier film in a curtain coating manner. The high-barrier composite film and the method for manufacturing the same have the advantages that the two glass fiber cloth layers are compounded on the outermost side of the original high-barrier film of the vacuum heat-insulation plate, by the aid of the excellent affinity and the scratch resistance of glass fiber cloth and cement, the problem that a conventional high-barrier film of a vacuum heat-insulation plate can be scratched and pierced easily, cannot be adhered with cement mortar firmly and is not anti-ageing can be effectively solved, and long-standing, big and difficult problems of an existing vacuum heat-insulation plate for building are solved.

The invention relates to an improved flow adjustable type timer. A regulation handle and a contact protrusion 21e are arranged, and the regulation handle is provided with a gear protrusion 21g to adjust flow; a gear elastic arm 21f is arranged to assist in adjusting the flow; a main control valve soft core is connected with an arc elastic ring 21c containing a cubic curve with an anti-impact and buffering property to make the motion accurate, and a protruded pyramidal valve pyramid and a horn mouth containing a cubic curve with an anti-impact and buffering property compatible with a valve opening 22a are arranged; a valve overflowing hole 21a is in a long arc shape containing a cubic curve with an anti-impact and buffering property; an external outline envelope line of a net of a filter net contains a cubic curve with an anti-impact and buffering property; the material of the main control valve core is EPDM, after a model comes out, post treatment is conducted with the temperature being 70 DEG C and time being 2 h, the contact protrusion 21e is provided with a roller, sliding is changed into rolling, and a long-standing knotty problem that errors occasionally occur is solved.

A high-barrier composite film for a vacuum thermal insulation panel and manufacturing method therefor, characterized in that attached to the outer-most side of the high-barrier film by means of an adhesive agent is a layer of glass fiber cloth. The advantages of the present invention are that: a layer of glass fiber cloth is attached to the outer-most side of the existing high-barrier composite film of the vacuum thermal insulation panel; the glass fiber cloth is scratch resistant and has good affinity with cement, thereby effectively solving the problem of high-barrier films of regular vacuum thermal insulation panels being vulnerable to scratching, stabbing, and aging, and having bad bonding with cement and mortar, and solving the long-standing difficulties of vacuum thermal insulation panels in construction.

The invention relates to a timer with adjustable flow, and the timer comprises a regulation handle and a trigger 21e, wherein, the regulation handle has a shift 21g for adjusting flow; the timer comprises a shift elastic arm 21f for assisting in flow adjusting; a main control valve soft core is connected by an arched beat 21c with logarithm curve having the characteristics that each pressure angle is the same, thereby making the action accurate; a protruding pyramid valve cone is adapted to a bell mouth of a valve port 22a containing a logarithm curve having the characteristics that each pressure angle is the same; a valve overflow orifice 21a has a long arc shape containing the logarithm curve having the characteristics that each pressure angle is the same; a profile envelope of a filter screen is the logarithm curve having the characteristics that each pressure angle is the same; the main control valve soft core is made of EPDM and is processed at the temperature of 70 Deg C for 22 hours after molding; the trigger 21e has a roller, so that sliding is changed to rolling, thereby solving the big problem of occasional error.

The invention discloses a ventilating device used for a corn storage building. The ventilating device comprises a plurality of ventilating channels which are arranged in an inner storehouse of the corn storage building. Each ventilating pipeline comprises a lower ventilating tube, a main ventilating tube and side ventilating tubes, wherein the main ventilating tube is inserted into the lower ventilating tube; the side ventilating tubes are in lap joint with the main ventilating tube through hangers; ventilating holes are formed in the lower ventilating tube, the main ventilating tube and the side ventilating tubes; anti-rat baffle plates are arranged at the two ends of the lower ventilating tube and the end heads of the side ventilating tubes; each of the main ventilating tube and the side ventilating tubes are formed by combining a plurality of sections. A radiating skylight is arranged on a top cover of the corn storage building at the top end of each ventilating channel; a vent hole is formed in the top cover of the corn storage building and the bottom of the radiating skylight; a cover plate on the top of the radiating skylight is in a rainproof type. The ventilating device used for the corn storage building provided by the invention can be used for preventing mildew during moist weather, improving the quality and increasing the weight, and scientifically, safely and greenly storing grains.

This invention provides a kind of siliconizing reagent and the siliconizing method for the injector sleeve. The said reagent is made of 5~20 weight portions of organosilicon oil dissolved in 100 weight portions of solvent. The used solvent can be anyone choosed from hexamethyldisiloxane, 1-fluoro-1,1-dichloroethane, dichloro-pentafluoropropane, pentafluorobutane or Techspray G 1637. The said method involves spraying the siliconizing reagent on the internal surface of the injector sleeve uniformly with the spray gun, drying it to volatilize the solvent and forming a thin layer of organosilicon oil on the internal surface of the injector sleeve. The used solvent is not F113, but a substitute with each physical and chemical index similar to F113. The used solvent can ensure the siliconizing quality of the injector sleeve, and its volatile has no pollution on environment. It solves a great difficulty which puzzles in the field of one-off medical appliance, and hence has significant society benefit and visible economic efficiency.

The invention discloses a wheel-controlled lawn mower capable of forming waved patterns through mowing. Wheels of the lawn mower are designed into polygon wheels (24); and when the lawn mower is moved, the lawn mower can go up and down in a limping way and is linked with a mowing blade to mow grasses into the waved patterns, so that a lawn is beautified. A side grass-discharging plate is not needed to be mounted and taken off any more, and according to the lawn mower which is provided with a sheet of side grass-discharging board turning upwards and easily placed, the sheet of side grass-discharging board, which is revolutionarily innovated by combining a grass-outlet pressing plate conventionally fixedly mounted on a chassis and provided with an elastic hinge and a side grass-discharging plate needing to be additionally taken to be placed, is arranged above a right-sided grass discharging opening of a chassis of a machine body. Therefore, the sheet of side grass-discharging board doesnot need to be placed and taken off, and instead, the side grass-discharging board only needs to be placed on the chassis.

The invention discloses an intelligent anti-theft lock of an electronic password safe. The intelligent anti-theft lock of the electronic password safe comprises an electronic password transmitter, a lock pin control end cover, a sliding push-and-pull mechanism, a collision bolt device, a fixed spring mechanism, a sliding push-and-pull pin, a manual collision driving wheel mechanism, a handle insertion hole, a driving wheel support, a motor driving wheel mechanism, an anti-theft bolt push-and-pull mechanism, a driving wheel supporting plate, a sliding groove, a mobile phone emergency number reporting circuit board device and an alarm.

A coordinate code Chinese character computer input method is a pure shape code. It is characterized in that: 419 new and old Chinese character parts are arranged according to the number of strokes from few to many on the "coordinate code special digital keyboard" with two digits as key codes, so that the Chinese character coding sorting is consistent with the traditional radicals. Class sorting is integrated to form a complete set of all Chinese character components, which can meet the coding needs of Chinese Simplified, Traditional, Old Chinese characters, Japanese and Korean Chinese characters in any occasion. Another feature of the present invention is that the division of components does not dismantle any intersecting strokes, and the sorting of components does not depend on invisible stroke order information, but uses the vertical projection information of visible component strokes to determine the coordinate orientation of components, which not only has a small amount of memory, but also easy to grasp. The invention can be applied to the fields of computer software, communication, new (old) font printed word (word) dictionary compilation, book collection index, hospital medical record retrieval and other fields related to Chinese characters.

The invention relates to a traditional Chinese medicine composition for treating prostatic hyperplasia, which consists ofis prepared from 1 to 6 parts by weight of membranous milkvetch root, 2 to 8 parts by weight of Chinese angelica root, 2 to 8 parts by weight of maca, 2 to 8 parts by weight of shorthorned epimedium herb, 1 to 6 parts by weight of twotooth achyranthes root, 1 to 6 parts by weight of rhizoma curcumaeturmeric rhizome, 1 to 6 parts by weight of narrowleaf cattail pollen, 1 to 6 parts by weight of herba dianthi superbirainbowpink herb, 1 to 6 parts by weight of cowherb seed, 1 to 6 parts by weight of spreading hedyotis herb and 1 to 6 parts by weight of barbed skullcap herb. The traditional Chinese medicine composition disclosed by the invention can ascend and descend functional activities of visceral Qi, regulate the Yin and Yang balance of the human body, promote the Qi and blood flow of the body and enhance the pathogenic factor resistance of the body, so that prostatic hyperplasia can be improved or cured. By the concerted application of the components, the traditional Chinese medicine composition can invigorate Qi and tonify the kidneys, treat stranguria and remove blood stasis and eliminate toxin and remove stagnation, achieving the objective of treatment.

The invention relates to a method for fast predicting the grinding quantity of a support roller of a hot rolled plate strip rolling mill, belongs to the technical field of a rolling roller maintenance process and is used for predicating the grinding quantity of the support roller during the roller maintenance by a calculation formula. The method has the technical scheme that a support roller grinding quantity predicating formula is adopted, the constants and the coefficients corresponding to a rolling roller material and a machine frame of the support roller to be ground are substituted into the support roller grinding quantity predicating formula, and the required grinding quantity of the support roller can be obtained. The method can overcome the defects of the grinding method adopted during the support roller maintenance in the prior art, the effect of fast and accurately predicting the reasonable grinding quantity of the support roller to be maintained is realized, the goals of high speed, accuracy and high efficiency in the maintenance process are achieved, after the method is adopted, the consumption quantity of the support roller is obviously changed and is averagely reduced by about 0.03 kg / t. The method has the advantages that the problem of restricting difficulty of the support roller maintenance is solved, the production of the rolling mill is ensured, the maintenance time and the cost are also greatly reduced, and the production cost is reduced.

A high-barrier composite film for a vacuum thermal insulation panel and manufacturing method therefor, characterized in that attached to the outer-most side of the high-barrier film by means of casting is a layer of glass fiber cloth, thereby forming a glass fiber cloth casting composite film. The advantages of the present invention are that: a layer of glass fiber cloth is attached to the outer-most side of the existing high-barrier film of the vacuum thermal insulation panel; the glass fiber cloth is scratch resistant and has good affinity with cement, thereby effectively solving the problem of high-barrier films of regular vacuum thermal insulation panels being vulnerable to scratching, stabbing, and aging, and having bad bonding with cement and mortar, and solving the long-standing difficulties of vacuum thermal insulation panels in construction.

The invention discloses an automatic scarfing device for flame cutting of a continuous casting. The automatic scarfing device consists of four parts, namely an electric control unit A, a compressed air unit B, an automatic scarfing gun unit C and a cooling water unit D. The automatic scarfing device and a matched flame cutting device are ideal equipment for fixed size cutting of steel wires or steel blasts rolled by a continuous casting machine in a steel factory; and the technical performance exceeds the national standard, the industrial standard and the process rule requirement of users. The finished product ratio of the steel blast made by fixed size cutting is over 99 percent; oxygen, fuel gas and compressed air for cutting are all saved by over 85 percent; a cutting gap is reduced from the conventional 8 millimeters to about 2 millimeters; the residues can be cleared away, so the problem that the residues may be suspended during flame cutting of the continuous casting can be solved; and the automatic scarfing device has a very good popularization value, is applicable to industries of metallurgy, shipbuilding, petroleum, chemical engineering, metal structures and the like, and particularly used for quickly and continuously cutting and scarfing a metal material with the temperature less than or equal to 950 DEG C.

The invention relates to a squeezing and rubbing dual high window reciprocal drum washing machine. The biggest and most obvious feature of the machine lies in that a reciprocal rotary conjoined dual drum assembly used is parallely arranged in the horizontal direction at the upper middle part of a machine body, stably hoisted on two sides of a central supported cable-stayed bridge type hanger fixedto a transverse center position of a mounting platform by the hanger, and hinged to and positioned on the mounting platform through plunger damping rods on left and right sides of the bottom of the conjoined dual drum assembly. The main features and advantages of the machine that can best reflect the advantages of the product are: efficient high-quality washing principle and washing method of 'centrifugal squeezing, rubbing and washing for dirt removal, rinsing and dehydration' completely different from 'squeezing and rubbing' of high imitated artificial washing of washing methods of varioustraditional washing machines are used, and left and right 'small-diameter, large-depth, easy-balance and weak vibrating drums' are used for reciprocal rotation, so that partial vibration of a low vibrational energy level can be further offset or greatly reduced; with the use of a brand-new original center-supported conjoined dual drum hanging and hoisting method, the moving parts in the body are completely contactless with the vertical surface and the top surface of an outer case body, thereby ensuring zero vibration of a machine case. The machine also has the advantages of high cleanliness, minimal wear rate, light weight, convenient and safe operation, health care, long service life and the like.

The invention relates to a mower with handrails capable of folding inwards simply and elastically and solves a problem, which is described as long-standing, big and difficult, whether a mower with handrails capable of folding inwards simply and elastically can be used or not without a tool by utilizing a resilient opening effect left by a bend skillfully. A left rod on the lower part of a lower handrail (19) and a right rod on the lower part of the lower handrail (19) fixedly keep elasticity modulus of a metal after bending forming and are opened elastically outward to be approached to a handrail seat (18) and to be firmly clamped by a low side edge of the handrail seat (18), so that assembling is finished and then the mower can work. When the mower is retracted, the lower handrail can besimply and elastically folded inward only by pressing the left rod and the right rod inward with left and right hands, and an opened spring washer is or is not arranged on the end part of each transverse pin (22) to achieving blocking to prevent fall. The left rod on the lower part of the lower handrail (19) and the right rod on the lower part of the lower handrail (19) is immediately placed on adrying kiln conveyor belt to pass after taken down from a bending machine, so that the left rod on the lower part of the lower handrail (19) and the right rod on the lower part of the lower handrail (19) fixedly keep elasticity modulus of the metal after bending forming and are opened elastically outward more.

Disclosed are a high-barrier composite membrane for a vacuum insulated panel and a method for manufacturing the high-barrier composite membrane. The high-barrier composite membrane is characterized in that a glass fiber cloth layer is composited on the outermost side of an original high-barrier membrane for the vacuum insulated panel in a heat-sealing mode. The high-barrier composite membrane has the advantages that by the aid of excellent affinity and scratch resistance of glass fiber cloth and cement, the problem that a high-barrier membrane for a conventional vacuum insulated panel is subject to scratch and puncture, is not firmly adhered with cement mortar and is not anti-aging can be effectively solved, and long-standing, big and difficult problems of an existing vacuum insulated panel for building are solved.

The invention relates to a squeezing and rubbing dual high window reciprocal drum washing machine. The biggest and most obvious feature of the machine lies in that a reciprocal rotary conjoined dual drum assembly used is parallely arranged in the horizontal direction at the upper middle part of a machine body, stably hoisted on two sides of a central supported cable-stayed bridge type hanger fixedto a transverse center position of a mounting platform by the hanger, and hinged to and positioned on the mounting platform through plunger damping rods on left and right sides of the bottom of the conjoined dual drum assembly. The main features and advantages of the machine that can best reflect the advantages of the product are: efficient high-quality washing principle and washing method of 'centrifugal squeezing, rubbing and washing for dirt removal, rinsing and dehydration' completely different from 'squeezing and rubbing' of high imitated artificial washing of washing methods of varioustraditional washing machines are used, and left and right 'small-diameter, large-depth, easy-balance and weak vibrating drums' are used for reciprocal rotation, so that partial vibration of a low vibrational energy level can be further offset or greatly reduced; with the use of a brand-new original center-supported conjoined dual drum hanging and hoisting method, the moving parts in the body are completely contactless with the vertical surface and the top surface of an outer case body, thereby ensuring zero vibration of a machine case. The machine also has the advantages of high cleanliness, minimal wear rate, light weight, convenient and safe operation, health care, long service life and the like.

The invention provides a traditional Chinese medicine composition for treating hemorrhoids and a preparation thereof. The traditional Chinese medicine composition consists of is prepared from the following medicinal materials: 10 to 30 parts by weight of membranous milkvetch root, 40 to 100 parts by weight of Chinese angelica root, 5 to 20 parts by weight of Japanese thistle herb or root, 10 to 30parts by weight of garden burnet root, 20 to 50 parts by weight of Japanese pagodatree flower, 10 to 30 parts by weight of white mustard seed, 10 to 20 parts by weight of northern dutchmanspipe fruit, 40 to 80 parts by weight of olibanum, 10 to 25 parts by weight of myrrh, 10 to 30 parts by weight of dried common ginger rhizomerhizoma zingiberis, 5 to 15 parts by weight of honeysuckle flower, 15to 30 parts by weight of weeping forsythia fruit, 20 to 30 parts by weight of dandelion herb and 15 to 25 parts by weight of herba violae. The cost of the materials adopted by the invention is low, concerted application is appropriate, the curative effect on hemorrhoids is remarkable, the traditional Chinese medicine composition is safe, and does not have toxic and side effects and pollute the environment, hemorrhoids cannot easily recur after being cured, the defects of high operation fee and easy recurrence are avoided, and the problem that hemorrhoids still cannot be cured after being treated by traditional Chinese medicines for a long time is solved.

The invention relates to a commercial electric pressure cooker matched medium ring cleaning pen. A cleaning penholder of the commercial electric pressure cooker matched medium ring cleaning pen is made of plastic or wood, one end or two ends of the penholder is or are provided with cleaning fur, the end with the fur is flat, the flat thickness is less than 1 centimeter, and the total length of the cleaning pen is less than 35 centimeters. The cleaning pen overcomes one defect on the use of electric pressure cookers, clears the barrier for the electric pressure cookers to enter nationwide general common families, and has remarkable benefit and unexpected technical effects.