147results about How to "No leakage problem" patented technology

The invention relates to the technical field of electronic cigarettes, in particular to an electronic cigarette atomizer comprising a mouthpiece having a smoke suction hole, an atomizing tube, a second inner tube, and a connecting cap. The atomizing tube is detachably connected with the mouthpiece. An atomizer head is disposed inside the atomizing tube. A first inner tube is disposed inside the atomizing tube. The second inner tube is disposed inside the first inner tube. The same ends of the first and second inner tubes are connected hermetically. The same other ends of the first and second inner tubes are abutted to the atomizer head hermetically. A first liquid storage cavity forms between the first inner tube and the second inner tube. The outer wall of the first inner tube is provided with an intake channel communicated with an air inlet of the atomizer head. The atomizing tube is provided with an intake slot communicated with the intake channel. A smoke outlet tube of the atomizer head is communicated with the second inner tube which is communicated with the smoke suction hole of the mouthpiece. The connecting cap is provided with a liquid filler communicated with the first liquid storage cavity. The atomizer head is provided with a liquid inlet whereby an atomizing cavity of the atomizer head is communicated with the first liquid storage cavity. The electronic cigarette atomizer is simple in structure, reasonable in design, free of liquid leakage, and capable of producing a lot of smoke.

The invention discloses a thin-sheet-type self-heating element, a preparation method and an application thereof. The thin-sheet-type self-heating element includes the following components, by weight, 20.0-60.0% of iron powder, 4.0-20.0% of activated carbon, 2.0-6.0% of ultrahigh-molecular-weight polyethylene fiber, 0.5-5.5% of xanthan gum, Arabic gum and carboxymethylcellulose (CMC), 1.0-4.0% of industrial salt, 0.3-1.5% of an anionic surfactant NP-4 and 12.0-28.0% of water. The self-heating element is greatly improved in heating temperature stability, can be prepared into a thin-sheet-type heating element, is free of leakage and is safe, can be widely applied in a body warming patch, a medical operation warming cushion, a medical and health-caring patch, a female menstrual-period dysmenorrhea-alleviating patch, breast caring, medical health caring of lumbar and cervical disease, instruments and meters, and digital product portable heating and the like fields.

The invention relates to a method for preparing an integrated quasi-solid zinc ion battery and relates to the technical field of batteries. The method is characterized by using a hydrogel as a substrate, and embedding the positive electrode material and the negative electrode material of the zinc ion battery in the hydrogel substrate to realize the integrated structure of the battery, thereby avoiding the problems such as interfaces, compatibility and short circuits caused by the layered assembly of the positive electrode, the diaphragm and the negative electrode of a traditional battery. Themethod uses the hydrogel as the gel electrolyte of the zinc ion battery, embeds the flexible zinc negative electrode prepared by electro-deposition, and then chemically polymerizes a polymer materialin situ on the surface of the gel electrolyte as a positive electrode. The integrated quasi-solid zinc ion battery with a customized shape can effectively reduce the interface impedance inside the battery and promotes the rapid transmission of electrolyte ions inside the electrode. The most important thing is that such design can provide more positive electrode material loading area for the battery, which greatly increases the energy density of the battery. The invention is used in the field of batteries.

The invention discloses a microcapsule lipstick wrapped with a natural pigment. The microcapsule lipstick is a spherical microcapsule in a core-shell structure. A capsule wall comprises Arabic gum and chitosan; a capsule core comprises the natural pigment and base oil; the microcapsule lipstick wrapped with the natural pigment is prepared by a complex coacervation method; an embedding rate of the microcapsule is up to 95%; and an embedding effect is excellent. The microcapsule lipstick wrapped with the natural pigment is high in safety with the adoption of the natural pigment; the natural pigment has bioactivity, so that the microcapsule lipstick wrapped with the natural pigment has a biological effect and allows a consumer to feel multiple consumption experience.

This invention adopts Gel polymer electrolyte which is Li ion polymer electrolyte with the multipolymer of polyvinyliene fluoride (PVDF) or vinylidene fluoride-hexafluoropropane as the substrate. Thepreparation method is to add the polymer particles of vinylidene fluoride-hexafluoropropane into acetone to a solution to be added by the solution of ethyl carbonate-propylene carbonate of Li salt 0.5-2M / L to fully mixed with the Gel polymer electrolyte solution which is coated separately on the surface of electrode 1 of prepared polypropyrrole or the surface of electrode of the polymer blend of poly methylthiophene, thereafter to be assembled. The said super capacitor is with high specific capacitance as high as 25f / g, and fine atmosphere stability and durable life time without leakage.

The utility model discloses an air purification filter element, a peculiar smell treatment device and an air purification device, relates to the technical field of air purification, and solves the technical problem in the prior art that the utilization ratio of air purification liquid is lower. The air purification filter element comprises a liquid injection device and a netted structure, wherein a liquid injection opening of the liquid injection device faces the netted structure; the air purification liquid sprayed towards the netted structure by the liquid injection opening of the liquid injection device can form at least one air purification liquid film on the netted structure. The air purification device comprises the air purification filter element. According to the invention, the utilization ratio of the air purification liquid is increased, the deodorization effect of air purification is improved, and the energy consumption and the cost are reduced.

The invention discloses a full-diameter core holder and a full-diameter core acidification simulation device, and belongs to the field of oilfield chemistry. The full-diameter core holder comprises a heating sleeve and a core holding assembly. The core holding assembly is arranged in the heating sleeve and comprises a first sealing component, a second sealing component and an anticorrosion rubber sleeve. The first sealing component and the second sealing component extend into an accommodating cavity, squeeze the anticorrosion rubber sleeve and close openings in two ends of the anticorrosion sleeve. The full-diameter core holder and the full-diameter core acidification simulation device have the advantages that excellent simulation effects can be realized by the full-diameter core acidification simulation device with the full-diameter core holder, and the simulation automation and the simulation authenticity can be advantageously improved.

The invention discloses a washing-agent putting box of a roller washing machine. The washing-agent putting box comprises a washing liquid box, a water discharging box, a shower assembly and an automatic putting pump. A liquid inlet is formed in the top of the washing liquid box and connected with the automatic putting pump through a one-way valve, the automatic putting pump is located on the washing liquid box, and puts washing agents into the shower assembly through a liquid conveying pipe. According to the washing-agent putting box of the roller washing machine, the automatic putting pump is arranged at the top of the washing liquid box, the high liquid-inlet mode and the high liquid-outlet mode are adopted, and it is avoided that the large quantity of washing agents are leaked when a drawer box of the washing machine is drawn out; as the putting time of washing liquid of the washing machine is shorter than the water flushing time of the washing machine, after the washing agents are added into the washing machine, water flushing is further continuous, residual washing agents in a washing-agent washing pipe are flushed away through water, and when a water inlet is stopped to conduct water flushing, the liquid conveying pipe reabsorbs part of water in a pump-washing-agent liquid inlet through the negative pressure effect, and it is avoided that the liquid inlet is dried up and plugged.

The invention discloses a method and device for loading data onto pages. The device for loading the data onto the pages adopts the method for loading the data onto the pages. The method for loading the data on the pages comprises the steps of (1) a page table which includes N original page data is established, wherein N is 3 or 4 or 5 and the N original data pages are ordered in sequence, (2) a page data loading request is received, wherein the page data loading request includes that all the original data pages in the page table are replaced with current data pages to be established. According to the method for loading the data onto the pages, no matter how many data pages are loaded in the follow-up operations, three to five data pages are reserved in the page table for certain. On one hand, computer memory is guaranteed to work normally, on the other hand, the problem that the memory is leaked due to the fact that the page number keeps increasing is solved.

The invention discloses an asymmetrical rotor electric eddy current damper. The asymmetrical rotor electric eddy current damper comprises a rotor, a copper sheet, a bearing and a torsion spring. The rotor comprises a shell and magnets. The copper sheet is fixedly installed on an inhaul cable, and the shell is installed on the bearing. The bearing is installed on the inhaul cable. When the rotor rotates relative to the inhaul cable, the copper sheet can cut magnetic induction lines of the magnets, and an electric eddy current is generated on the copper sheet to dissipate vibration energy. The rotor has the moving trend opposite to the inhaul cable all the time, and the amplitude of the inhaul cable can be effectively restrained. The torsion spring plays the effect that the symmetry axis of the magnets is perpendicular to the vibration direction to serve as the balance position of the rotor on the inhaul cable of the main vibration direction. By means of the asymmetrical rotor electric eddy current damper, vibrations of the inhaul cable can be effectively controlled, energy saving and environmental protection can be achieved through the working mode, vibration control cost is reduced, and the structural safety can be effectively improved.

The invention discloses a sealing method for heat conducting components. The sealing method comprises the steps as follows: a shielding case with a through hole is fixed on a printed circuit board (PCB) fixed with a chip and surrounds a chip; the chip can generate heat when working; the through hole is sealed by using a first heat conducting component and a groove is formed in the through hole; the bottom of the groove is in contact with the surface of the chip; the groove is filled with a conductive second heat conducting component; the second heat conducting component is made of a metal phase-change material; and a middle frame is connected with the first heat conducting component, wherein the second heat conducting component is located in a sealed space.

The invention discloses a method for preparing a natural pigment-cladded microcapsule lipstick. The method comprises the following steps: firstly, weighing astaxanthin, dragon fruit pericarp haematochrome and cochineal haematochrome; slowly adding to base oil, and stirring; adding tween-80, mixing evenly and homogenizing at a high speed, so as to prepare a mixed solution; adding the homogenized mixed solution to a chitosan mixed solution, and mixing evenly; adding the evenly mixed solution to an arabic gum solution; carrying out complex coacervation at 60-70 DEG C for 10-15 minutes; and finally standing a reaction solution, centrifuging and washing, and drying in a freezer dryer, so as to prepare the natural pigment-cladded microcapsule lipstick. The method disclosed by the invention has a good emulsification effect; the prepared microcapsule product is relatively uniform in quality; and the activity of the natural pigment is not destroyed.

The invention relates to a lithium-ion power battery electrolyte. The lithium-ion power battery electrolyte comprises four components, namely, quaternary ammonium chloride, a hydrogen bond donor, lithium salt electrolyte and polyethylene glycol PEG, wherein the mole ratio of the quaternary ammonium chloride and the hydrogen bond donor is (1 to1)-(1to3); the concentration of the lithium salt electrolyte in the electrolyte is 0.1-3.0mol / L, and the PEG is 0.1%-90% of total mass of the electrolyte. On one hand, an ionic liquid guarantees the high security and fire resistance of electrolysis, on the other hand, and the price of the lithium-ion power battery electrolyte is low; meanwhile, a PEG component is added in the electrolyte, the compatibility of an electrolyte and a lithium-ion battery material is improved, and the property of electrolyte is improved. The lithium-ion power battery electrolyte provided by the invention has properties of good security property, fire resistance, high temperature characteristic and withstand voltage property and the like.

The invention discloses a mobile terminal. The mobile terminal comprises a chip and a PCB (Printed Circuit Board), wherein the chip is fixed on the PCB and can generate heat during working, the mobile terminal also comprises a shielding cover, a first heat conduction part and an intermediate frame, the shielding cover is arranged on the PCB and encircles the chip, a groove is formed in a part above a part of the shielding cover and the chip, the bottom of the groove is in contact with an upper surface of the chip, the first heat conduction part is arranged in the groove and is a metal phase-change material, the intermediate frame is connected with the shielding cover so as to seal the groove to form a sealing space, and the first heat conduction part is arranged in the sealing space.

The invention discloses a herbal essence microcapsule and an application of the herbal essence microcapsule in fragrance bath cream. The herbal essence microcapsule is a spherical microcapsule in a core-shell structure. A capsule wall comprises gelatin and chitosan; a capsule core comprises herbal essence; the herbal essence microcapsule is prepared by a complex coacervation method; an embedding rate of the microcapsule is up to 94%; and an embedding effect is excellent. The herbal essence microcapsule is added into the fragrance bath cream at a mass percentage of 2-5%, can effectively avoid the problem of fragrance loss of the fragrance bath cream during storage; the herbal essence has biological activity and brings a biological effect to the bath cream with the herbal essence microcapsule; and a consumer feels multiple consumption experience.

The invention discloses a packaging bag and an automatic detergent putting device with the packaging bag. The packaging bag comprises a bag body with a bag mouth and a cover covering the bag mouth, the end, close to the bag body, of the bag mouth is provided with an annular bayonet, the cover is positioned on the outer side of the bayonet, and a sealed sealing film is arranged at an opening in thefront end of the bag mouth. The bag mouth structure of the packaging bag is changed, so that the bag mouth can be clamped in a detergent liquid storage tank and is matched with an extracting device inside a washing machine for use, the problem that a detergent needs to be added or put frequently is solved, and the problem that a washing liquid pipeline is blocked and inconvenient to clean due tothe fact that liquid in the detergent liquid storage tank is dried is solved.

The invention belongs to the technical field of earphone equipment, and relates to a bone conduction loudspeaker. A bone conduction loudspeaker comprises an outer shell, a transduction unit and a vibration panel, and the transduction unit is used for generating a vibration transduction unit and is located in the outer shell; the bone conduction loudspeaker further comprises a vibrator support, andthe transduction unit is located in the vibrator support. The oscillator support is located in the outer shell, and one end of the oscillator support is connected with the vibration panel. Accordingto the bone conduction loudspeaker provided by the embodiment of the invention, the transduction unit is located in the vibrator bracket, and one end of the vibrator bracket is connected with the vibration panel. The oscillator support is located between the transduction unit and the external shell and isolates the transduction unit from the external shell. And one end of the vibrator bracket is connected with the vibration panel, so that the vibration panel is isolated from the external shell. When the transduction unit vibrates, the outer shell cannot sense the vibration of the transductionunit and cannot sense the vibration of the vibration panel, and no vibration is transmitted to the outer shell, so that no sound leakage is generated.

The invention discloses a preparation method of a microcapsule type moisturizing eye cream. The preparation method of the microcapsule type moisturizing eye cream comprises the following steps: taking potassium alginate, sodium hydroxyethyl cellulose, hyaluronic acid, marten oil, squalane, lecithin, jojoba wax, glycerol, batyl alcohol, serine, cassava porous starch, a bupleurumol extract, a coix seed alcohol extract, a radix paeoniae alba alcohol extract, a dendrobium stem alcohol extract, a coenzyme Q10 and Tween-60, firstly preparing a capsule wall solution A and a capsule core mixture B, mixing A with B, then stirring and dispersing, then homogenizing to obtain a homogenization solution C, dropwise adding the homogenization solution C into a calcium chloride solution, and filtering and washing to obtain the moisturizing eye cream. The microcapsule type moisturizing eye cream prepared by the method is capable of slowly and uniformly releasing active ingredients and grease adsorbed in the cassava porous starch during use, is incapable of releasing a large quantity of the active ingredients and the grease in a short time and causing excessive nutrition and grease content to the skin, thereby avoiding the generation of fat granules; the microcapsule type moisturizing eye cream also has the characteristic of excellent permeability.

The invention discloses a sealing method of a heat-conducting component. The sealing method comprises the steps of fixing a shielding case provided with a groove on a PCB (Printed Circuit Board) fixedly provided with a chip, surrounding the chip, arranging a first heat-conducting component in the groove, and connecting a middle frame with the shielding case to seal the groove into a sealed space, wherein the chip can generate heat during working; the groove is formed in the partial shielding case above the chip; the bottom of the groove is contacted with the upper surface of the chip; and the first heat-conducting component is made of a metal phase change material, and located in the sealed space.

The invention discloses a microcapsule type brightening eye cream which is a microcapsule with a core-shell structure. A capsule wall is prepared from the following materials: ammonium alginate, sodium polyacrylate and hyaluronic acid; a capsule core is prepared from the following materials: marten oil, squalane, lecithin, jojoba wax, glycerol, batyl alcohol, serine, corn porous starch, a mountain elm alcohol extract, an arabidopsis alcohol extract, bee milk, opoponax alcohol, a coenzyme Q10 and a surfactant. Through the microcapsule type brightening eye cream, the corn porous starch is used for adsorbing grease ingredients and active ingredients adsorbed in the materials of the capsule core, so that the microcapsule type brightening eye cream is capable of slowly and uniformly releasing the active ingredients and the grease adsorbed in the corn porous starch during use and is incapable of releasing a large quantity of the active ingredients and the grease in a short time and causing excessive nutrition and grease to the skin, thereby avoiding the generation of fat granules; the microcapsule type brightening eye cream also has the characteristic of excellent permeability.

A data driving circuit of a display apparatus is electrically connected with a display panel through a plurality of data lines. A scanning driving circuit is electrically connected with the display panel through a plurality of scanning lines, and is provided with multiple stages of driving units. Each stage of driving unit is provided with a shift control element and a driving element, the shift control element outputs a control signal according to a starting signal, the driving element outputs an output signal to the corresponding scanning line according to the control signal, a first trigger signal and a second trigger signal, and the output signal is used as the starting signal of the next stage of driving unit. At a first second trigger signal and in a blanking time after start of a data output time of the display panel, the time for upward transition of the second trigger signal and the time for downward transition of the first trigger signal at least partially overlap.

The invention relates to the technical field of household appliances, in particular to a dish-washing machine slag-water separation device and a dish-washing machine. The slag-water separation deviceof the dish-washing machine comprises a pipe body, wherein the pipe body is provided with a feed port connected with a discharge port, a waste liquid port for discharging waste liquid and a waste residue channel for discharging waste residues; a filter screen cylinder installed in the pipe body and communicated with the feeding port of the pipe body and forming a gap channel allowing waste liquidto pass through between the filter screen cylinder and the inner wall of the pipe body, wherein a plurality of filter screen openings communicated with the gap channel and the interior of the filter screen cylinder are formed in the filter screen cylinder, and the gap channel is communicated with the waste liquid opening; and a waste residue conveying member and a driving device, wherein the wasteresidue conveying piece is movably arranged in the filter screen cylinder, under driving of a driving device, the slag is conveyed to the waste residue channel, waste liquid and waste residues are separated and discharged, convenience is brought to cleaning and subsequent use of the dish-washing machine, meanwhile, the separated waste liquid and waste residues are directly discharged through thewaste liquid opening in the pipe body and the waste residue channel, and the problem of waste residue scattering and leaking is avoided.

The invention relates to a transcritical CO2 heat pump air conditioner system. The transcritical CO2 heat pump air conditioner system comprises a compressor, a four-way valve, a hot water air cooler, a throttling component, an indoor cold air heat exchanger, an outdoor air cooing heat exchanger and a liquid storage tank. A first three-way valve second port and a second three-way valve second port in the system are communicated and form a first common output end. A first three-way valve third port and a second three-way valve third port are communicated and form a second common output end. The output end of the indoor cold air heat exchanger is connected with the first three-way valve first port. The output end of the outdoor air cooling heat exchanger is connected with a second three-way valve first port. The first common output end is connected with the compressor. The second common output end is connected with the liquid storage tank. In the system, two three-way valves are used for replacing a four-way valve, and in the heating and refrigerating converting process, one three-way valve is enough to independently work every time, wherein one path of work media do not affect the other path of work media, the problem of valve leakage cannot happen, and the reliability of the transcritical CO2 heat pump air conditioner system is improved.

The invention provides a roadside supporting method through high-water packing props and relates to the technical field of mine supports. The roadside supporting method comprises the steps of communicating prop bodies through a communication device, and arranging connecting rods to strengthen the stability between the prop bodies; and injecting a high-water material into cylinder blocks through three-purpose valves of the props to enable the high-water material to go into the connected prop bodies through the communicating device until movable prop bodies of the prop bodies rise to top plates.The high-water material comprises a material A and a material B at the weight ratio of 1:1; the material A comprises sulphoaluminate cement clinker, a suspending agent and a super-retarding agent; the material B comprises lime, plaster, a suspending agent and a composite quick-setting early strengthening agent; and after solidification, the volume of the high-water material slightly increases, and a supporting working face is fixed at the height of the prop bodies. The high-water filling props are used for permanent supporting of a roadway and roadside supporting of a gob-side entry, can alsobe used for replacing timber cribs, single hydraulic props and concrete props and is simple in construction process, convenient to operate, low in cost and beneficial to environmental protection.

The invention discloses an improved hydraulic motor, a front end tapered roller bearing, a rear end tapered roller bearing and a driving shaft are installed by interference fit, an intermediate pressure ring is installed on the front end tapered roller bearing by interference fit, an oil groove radial channel arranged on the driving shaft is extended to the driving shaft front end to prompt the driving shaft to generate centrifugal force to improve the hydraulic energy to transform into mechanical energy efficiency; the intermediate pressure ring and an outer ring of the rear end tapered roller bearing are in interference fit with an inner hole of a motor casing; a bearing pressure cover is mounted in the motor casing, a plunger ring shrinks and sheathes a plunger, the plunger and a ball head end of a center connecting rod are respectively installed in the driving shaft, a cylindrical spring is installed in the center connecting rod for prevention of locking of the center connecting rod, the cylindrical spring and the axially uniformly distributed plunger are filled into a cylinder body, an oil distributing plate and the cylinder body spherical surface are fit, a spring seat is arranged in the end part of the center connecting rod; a rear end cover is installed in the motor casing end part, a positioning pin is inserted into the oil distributing plate, and a flush valve is tightly installed on the rear end cover end part in order to realize the automatic control of cooling.

The invention relates to a railway safety detection technology and specifically relates to a construction clearance detection method. The method includes the following steps: pre-calibrating a cameraby using a Zhang Zhengyou calibration method and obtaining camera parameters; invoking geographic location data information of a platform by using locating information of a computer, and determining astation of a current location and a station name; during an operating process of a train, taking a video image; performing phase unwrapping according to a projection structured light measuring technology; performing three-dimensional computation by using a phase unwrapping result, and generating three-dimensional point clouds; comparing each Z value in the three-dimensional point clouds with a clearance intrusion standard to judge if there is clearance intrusion, wherein if there is clearance intrusion, performing clearance intrusion alarm, and determining the account of clearance intrusion and a clearance intrusion location, and otherwise, ending the detection. The construction clearance detection method solves the problems that a manual detection method is slow in detection and affectedby subjective factors and that a laser line scanning method can only perform discontinuous measurement. In the meanwhile, a window period of train operation is not required during detection of clearances of platforms and shelters.

The invention discloses a direction superpixel-based rapid image segmentation method. Compared with the segmentation performance of traditional segmentation methods based on clustering, watersheds, active contour models or graph models, the segmentation performance of the method is averagely improved by 100%. Compared with some previous segmentation methods which predict edges through a convolutional neural network and adopt time-consuming post-processing, the method can operate in real time with the speed being more than 18 times that of the segmentation methods. According to the segmentationmethod of the invention, a two-dimensional vector is predicted at each pixel position through a convolutional neural network, and the direction of the vector points to a current point from an edge closest to a current pixel; a direction-based superpixel graph is obtained according to the predicted direction of each position; on the basis of the superpixel graph, a regional relation graph is constructed; and a segmentation result is obtained by using a customized rapid fusion method. The method achieves a very good effect on the balance of the speed and precision of image segmentation, is simple to implement, and has a very wide practical application range.

The invention discloses a motor controller integrated assembly for an electric vehicle and the electric vehicle with the motor controller integrated assembly. The motor controller integrated assembly comprises a permanent magnet rotor assembly which is integrated with an electric vehicle hub and a motor shell, and a stator assembly which is located at the inner periphery of the permanent magnet rotor assembly and is integrated with a motor shaft, a controller used for achieving driving control over the motor is installed on the end face of the stator assembly, the motor shell is provided with a liquid injection opening used for injecting insulating cooling liquid, meanwhile, an air duct extending from the interior of the motor shell to the exterior of the motor shell is arranged in the motor shaft, and an air duct port located in the motor shell is connected with an air vent valve. According to the motor controller integrated assembly, the heat dissipation problem of the motor controller integrated assembly for the electric vehicle is effectively solved, so that the application process of the motor controller integrated assembly for the electric vehicle is powerfully promoted, and standardization and series modularization of motor controller products are achieved.

The invention discloses a color-protecting lip glaze which utilizes a core-shell structure to embed toner and a preparation method thereof, which is prepared by mixing toner microcapsules and a substrate at a mass ratio of 1-3:30-40; wherein, The substrate comprises the following components by mass: 30-50 parts of jojoba oil, 10-20 parts of beeswax, 10-15 parts of camellia essential oil, 5-8 parts of lavender oil, 3-4 parts of gardenia yellow pigment and 1 ~2 parts of titanium dioxide; the capsule core raw material components of the toner microcapsules include lanolin, shea butter, stearate and coffee pigment, and the capsule wall raw material components include gellan gum and hydroxymethyl cellulose Sodium and Butylene Glycol. The color-protecting lip glaze of the present invention exhibits the color of the substrate during storage, and the microcapsules are broken during use, so that the toner inside the microcapsules and the toner of the substrate are fused to achieve a discoloration effect, avoiding the color change during storage. Discoloration or fading, effectively guarantee the shelf life and color stability during the trial period.

The invention discloses an engine oil filtering device of an engine. The engine oil filtering device comprises a shell and a filter element. The shell is installed on an engine body of the engine. The filter element is arranged in an inner cavity of the shell. The shell is provided with an oil leakage channel communicating an inner cavity of the engine with the inner cavity of the shell. The oil leakage channel comprises a first channel and a second channel. The first channel is large in inner diameter and close to the filter element. The second channel is small in inner diameter and away from the filter element. A push rod is movably installed in the oil leakage channel in the axial direction. One end of the push rod is connected with the filter element in an abutting mode. The push rod comprises a protrusion portion. The protrusion portion is larger than other parts of the push rod in outer diameter. The side wall of the protrusion portion is attached to the inner wall of the second channel. In the detaching process of the engine oil filtering device, internal engine oil flows into the engine body of the engine, leakage of engine oil in the engine oil filtering device is avoided, and installing limitation of the engine oil filtering device is eliminated.