40results about How to "Does not affect tightness" patented technology

The invention discloses a shooting device for an aerial photo holder. The shooting device is characterized by comprising two rotators, a connecting seat and a driving mechanism, the connecting seat is used for connecting the rotators, the driving mechanism is arranged on the connecting seat and used for driving the rotators to rotate on a horizontal plane, the rotators are arranged below the connecting seat, each rotator comprises a camera shell with a cavity and a camera obliquely arranged in the camera shell, a shooting hole corresponding to a lens of the camera is formed in each camera shell, the optical axis of each camera is downward, an included angle is formed between each optical axis and a vertical direction, and the driving mechanism comprises a power device and a transmission mechanism connected with the power device and the camera shells. Shooting angles can be flexibly adjusted, vibration absorption performance and sealing performance are fine, the working environment and the shooting quality of the cameras are ensured, and the shooting device can be widely applied to the aerial photo holder.

The invention discloses an in situ real-time measurement device used in a powder bed melting additive manufacturing process. A thermocouple of the device is arranged at a position, where temperature needs to be measured, on a substrate, and a displacement sensor is in contact with the lower surface of the substrate, so that the displacement sensor can measure deformation of the substrate in the additive manufacturing process. The device disclosed by the invention can realize in situ real-time monitoring on thermal-deformation (or temperature) of the substrate and a formed part in the powder bed melting additive manufacturing process, can accurately reflect evolution rules of the thermal-deformation (or temperature) of the substrate along with time, not only provides a reliable experimentalmeasurement basis for studying a deformation mechanism of the substrate and the formed part in the powder bed melting additive manufacturing process, but also provides powerful experimental data forfinite element simulation on powder bed melting additive manufacturing and finally lays a foundation for establishing a technique of effectively controlling deformation of the substrate and the formedpart as well as obtaining a high-precision and high-performance formed part.

The invention discloses a comfortable and breathable oxygen mask which comprises an annular air cushion, a silicone supporting ring, a cover and an annular oxygen pipe. The annular air cushion, the silicone supporting ring and the cover are sequentially and hermetically connected, the annular oxygen pipe is arranged on the inner periphery of the cover and positioned in the closed space between theface of a wearer and the cover, a plurality of air outlets are formed in the annular oxygen pipe, the annular oxygen pipe is communicated with an air inlet pipe, an air inlet of the air inlet pipe ispositioned outside the closed space formed by the cover and the face, and the cover is made of soft light breathable materials. The comfortable and breathable oxygen mask is comfortable to wear and good in air tightness and can solve the problem that an existing mask easily generates labored breathing and limits breathing. The mask is suitable for various spontaneous breathing crowds such as breathing failure patients and people with weak breathing movement.

The invention discloses a fastening piece, in particular to a pipe fitting connector used for connecting and fastening a plurality of rods or pipe fittings. The pipe fitting connector comprises a base and at least one shell, wherein the base is provided with a plurality of connecting parts with a quantity corresponding to that of shells, and the shells and the shapes of the inner surfaces of the connecting parts correspond to the shapes of the outer surfaces of connected pipe fittings and can be coated on the pipe fittings; and the inner surfaces of the shells are provided with connecting pins which are inwards extended, and the connecting parts of the base are provided with corresponding connecting holes. The pipe fitting connector has the advantages of artful structural design, stable connection, convenience in mounting / dismounting and attractive appearance.

The invention provides a temperature equalizing system for an autoclave. The temperature equalizing system comprises a fan and a motor; the fan is arranged inside a tank body of the autoclave; the motor is arranged outside the tank body; the motor is provided with a first magnetic body; the fan is provided with a second magnetic body matched with the first magnetic body, and the first magnetic body and the second magnetic body are arranged to enable the motor to drive the fan through the magnetic force between the first magnetic body and the second magnetic body. The invention also provides a temperature equalizing method for the autoclave. According to the temperature equalizing system and method for the autoclave disclosed by the invention, transmission from the motor to the fan is achieved by the magnetic force, thereby reliably sealing the autoclave in the temperature equalizing operation of the autoclave without a sealing material.

Provided is a high-speed test system and processing method thereof for an ATE machine. The test system comprises a test daughter board and a test mother board. The test mother board is provided with a spring needle connector array, and the test daughter board is provided with a test socket. The test daughter board, the spring needle connector array and the test mother board are connected through a pressing screw connection mode. The processing method is characterized by, to begin with, pressing spring needles to a spring needle connector module; then, installing the spring needle connector module to a step-shaped groove reserved in a metal base through a screw connection mode; and finally, installing a stud running through the whole height of the test system to the metal base, wherein the two ends of the stud are screwed with the test daughter board and the test mother board respectively and independently, and thus pressing assembling work of the test system is finished. The high-speed test system and processing method not only can ensure repeated use and maintenance of the test system, but also can realize high-precision control of signal link impedance, and thus integrity of high-speed signal of the test system is guaranteed.

The invention relates to a water wall abrasionproof scale type welding method. Abrasionproof plates are adopted to carry out abrasion prevention on water cooled pipes in a sequential scale type overlapped manner. One side of each abrasionproof plate is provided with circular arc matched with the outer wall of the corresponding water cooled pipe, wherein the two sides of the circular arc are provided with an X welding point and a Y welding point, and the two welding points are arranged on the two sides of the abrasionproof plate. A horizontal line is drawn for the water cooled pipes which are arranged side by side, and the abrasionproof plates intersect with the horizontal line. Frstly, the X welding points of the first abrasionproof plates are subjected to spot welding, then, the X welding points of the second abrasionproof plates are subjected to spot welding sequentially, the multiple abrasionproof plates are sequentially subjected to spot welding, the abrasionproof plates intersect with the horizontal lines and are mutually and partially overlapped, the X welding points of each abrasionproof plate are welded, and then the Y welding points of each abrasionproof plate are welded; or the X welding points and the Y welding points of each abrasionproof plate are sequentially welded. The method using the scheme has the beneficial effects that overlapping gaps of the abrasionproof plates are tight, the welding quality is high, the abrasionproof plates are not prone to disengaging, and the abrasionproof effect is good.

The invention provides a mammary gland therapeutic instrument for the mammary gland department, and relates to the field of mammary gland treatment. The mammary gland therapeutic instrument for the mammary gland department comprises a supporting rod; the upper end of the supporting rod is fixedly connected with a first bed section; one end of the first bed section is rotationally connected with asecond bed section; a treatment device is arranged at the upper end of the second bed section; the treatment device comprises a shell; grooves corresponding to breasts are formed in one side of the shell; a slow release layer is fixedly connected to each groove of the shell; a heating layer is fixedly connected between the slow release layer and the shell; stimulating electrodes are uniformly distributed and fixedly connected to grooves of the shell; a second motor is fixedly connected between the two grooves in the shell; a motor shaft extends from one end of the second motor; and an eccentric block is fixedly connected to the side wall of the electrode shaft. Through arrangement of the stimulation electrode and the heating layer, a treatment mode similar to acupuncture can be obtained.

The invention belongs to the field of mining hydraulic motors, and particularly discloses a horizontal hydraulic cylinder type motor. The horizontal hydraulic cylinder type motor aims to achieve the technical purposes that the structure is simple, operation is convenient, safety coefficients are high, service life is long, and the underground coal mine accident rate can be effectively reduced. The horizontal hydraulic cylinder type motor comprises a box, three hydraulic cylinders, a crankshaft, a box front end assembly and a control system. An installing seat board is arranged at the bottom of the box, the hydraulic cylinders are arranged in the box side by side, the ends of pistons of the hydraulic cylinders are connected with the crankshaft through piston end covers, the output end of the crankshaft and the installing seat board are arranged on the same side, the hydraulic cylinders move in a reciprocating mode to drive the crankshaft to rotate, the crankshaft drives the control system to move, the control system controls reciprocating motion of the three hydraulic cylinders to drive the crankshaft to conduct continuous rotational motion, the hydraulic cylinders drive the crankshaft to rotate, the rotating speed is low, torque is large, and the horizontal hydraulic cylinder type motor meets the requirements for use of underground coal mine equipment.

The invention discloses a fixed dressing for peripherally inserted central venous catheters (PICC) related dermatitis for the oncology department, and relates to the technical field of postoperative wound adjuvant therapy equipment. Aiming at the problems that the use position of an existing dressing is prone to misplace, the dressing is inconvenient to replace, the drug effect utilization rate of a standing dressing is low, the wound surface is relatively slow to recover and the like, the following scheme is proposed that a storage box is included; a connecting mechanism is fixedly connected to each of two sides of the storage box; each connecting mechanism comprises a cover plate; a mounting plate is welded to the bottom part of each cover plate; a connecting plate is arranged on an outer ring of each mounting plate; each connecting plate is welded to the outer wall of the storage box; and a cavity is formed in each connecting plate. The fixed dressing is novel in design structure; the dressing is simply and quickly fixed in position, so that the workload of a medical worker is reduced, the bandage has elasticity, so that the tightness degree is not affected by movement of a patient; the dressing is used in a temperature-controlled heated manner, so that a drug volatilization effect is improved, which facilitates absorption of the drug by an affected part; the healing speed is increased, the discomfort of the patient is reduced; and the fixed dressing is suitable for being applied and popularized.

The invention discloses a preparation method of high-strength porous piezoelectric ceramic, and belongs to the technical field of ceramic preparation. Strontium carbonate, barium carbonate and titanium dioxide are mixed as a substrate, and tert-butanol and other substances and a plant extract are mixed as a reinforcing agent to prepare piezoelectric ceramic with high strength, high porosity and high piezoelectric performance. The tert-butanol has high saturated steam pressure and low surface tension, is highly volatile in the drying process of a green body, and does not affect compactness between adjacent granules, so that the strength of the green body is improved; in addition, monomers are introduced in the tert-butanol, macromolecules are obtained in the green body through a polymerization reaction of the monomers, and a three-dimensional network structure is constructed for supporting a ceramic body, so that high porosity is maintained; in the sintering process, a uniform pore structure is formed through an in-situ polymerization reaction, so that breakdown in the polarizing process can be avoided, transmission of stress and energy is facilitated, and thus the piezoelectric performance of the piezoelectric ceramic is improved; the high-strength porous piezoelectric ceramic has a wide application prospect.

The invention relates to a system for monitoring bearings, preferably for roller bearings having a first bearing ring and a second bearing ring mounted such as to rotate relative to one another, saidsystem comprising at least one sensor element including one or more sensors for the contactless detection of the state of the bearings, at least one transmitter for transmitting a signal, and a powerunit for supplying power to the sensor element and the transmitter, in which a sensor element is connected to the transmitter and mounted in a supporting element that is fitted to the bearing using anadapter. The resulting bearing-monitoring system is a system which can be installed in a simple and cost-effective manner and which can be retrofitted to almost any type of bearing.

The invention relates to the technical field of oil field exploitation, and discloses an auxiliary adjustment device for a motor of an oil pumping unit and an operation method of the auxiliary adjustment device. The auxiliary adjustment device comprises an oil pumping unit base, a bracket is fixedly mounted at one end of the top of the oil pumping unit base, a walking beam is hinged to the top ofthe bracket, one end of the walking beam is fixedly connected with a horse head, a connecting rod is hinged to the bottom of the other end of the walking beam, a crank balancing block is hinged to thebottom end of the connecting rod, a supporting block is fixedly mounted in the middle of the top end of the oil pumping unit base, and a reduction gearbox is fixedly mounted at the top of the supporting block. According to the auxiliary adjustment device for the motor of the oil pumping unit and the operation method of the auxiliary adjustment device, through the joint action of a lead screw, a movable block and a second motor, when needing to be replaced, a belt is replaced without a special tool for demounting a first motor, the belt of the oil pumping unit can be replaced only by controlling forward and reverse rotation of the second motor through a PLC, thus a lot of time is saved, and meanwhile, the downtime of the oil pumping unit is shortened.

The invention provides a minimally invasive transpedicular bone grafting supporting nail suitable for operation of a patient having a vertebral disease. The minimally invasive transpedicular bone grafting supporting nail comprises a first thread section, a second thread section, a spacing section, a cylinder section and a nail tail, wherein the first thread section is located at the front end of the supporting nail, the second thread section is located in the middle of the supporting nail, the spacing section free of a thread is formed between the first thread section and the second thread section in a spaced mode, and the cylinder section and the nail tail which are connected in sequence are arranged at the rear end of the second thread section. By the adoption of sectioned thread structures of the front end and the rear end of the supporting nail, the stability of a holding force can be ensured. During operation, the supporting nail is close to a sunken center, a resetting effect is good. Bone cement or a liquid bone can be also arranged at the sunken center by utilizing the supporting nail, and a bone grafting effect is good.

The invention discloses a vacuum packaging method for visible meat grain pet food. The vacuum packaging method comprises the following steps that S1, filling is carried out; and S2, vacuumizing is carried out. In the S1, filling is carried out after the meat grain pet food is prepared, the inner bag of a packaging bag is provided with hard plastic which can be positioned, a small hole is formed inthe hard plastic, and after the packaging box is filled with an object, the cover is covered, only a small hole is reserved to enable the inner air and the outer air of the packaging box to communicate; and in the S2, a suction nozzle connected with a vacuum pump is inserted into the small hole, the vacuum pump is opened, the negative pressure is used for pumping out air in the packaging box, thesuction nozzle is made of metal, the suction nozzle is heated, the plastic on the periphery of the small hole is fused, the suction nozzle is pulled out, the small hole is automatically sealed, and vacuum packaging of the inner bag is completed. According to the vacuum packaging method, the hole is reserved in the bag wall, the suction nozzle is added, the suction nozzle is removed after the suction nozzle is vacuumized, and meanwhile, the periphery of the suction nozzle is subjected to condensation, so that the vacuum is realized; and a leakage-proof ring and an air bag are added, so that the leakproofness between the leakage-proof ring and the air bag is guaranteed, and the leakproofness of the food inner bag is guaranteed.

The invention discloses an integral multiway valve with integral hydraulic locks and a fouling resistant plug-in mounting overflow valve. The integral multiway valve comprises an oil inlet valve block, a plurality of working valve blocks and an oil returning valve block. The oil inlet valve block, the working valve blocks and the oil returning valve block are of an integral structure. The oil inlet valve block is provided with an oil inlet P, and the oil returning valve block is provided with an oil returning port T. Each working valve block is provided with a working oil port, wherein a valve rod is inserted into the working oil port. Each working valve block is internally provided with one integral hydraulic lock, one valve rod, one double-lock hydraulic control push rod and a back plug. Each integral hydraulic lock comprises a steel lock valve base, a lock valve element, a lock valve sleeve and a reset spring. The oil inlet valve block is internally provided with the plug-in mounting overflow valve. The integral multiway valve with the integral hydraulic locks and the fouling resistant plug-in mounting overflow valve has the advantages that the risk of oil leakage can be reduced, internal leakage is avoided, working reliability of the valve is improved, the machining technology is simplified and machining cost is reduced.

The invention provides an LVDS (Low Voltage Differential Signaling) connector. The LVDS connector comprises an LVDS plate end and an FFC (Flexible Flat Cable) end matched with the LVDS plate end in an inserting manner, wherein the FFC end comprises a cover body with a mounting surface and an FFC which is horizontally mounted on the mounting surface through a mounting structure; the LVDS plate end comprises a base and terminal parts; the base is provided with a mounting groove for containing the FFC, and a plurality of terminal grooves for connecting terminals, which are formed in the length direction of the mounting groove at intervals; the terminal parts are punched and molded in the terminal grooves and each terminal part comprises a pin end which extends out of a rear end of the base; and a locking structure for keeping the FFC end and the LVDS plate end relatively fixed is arranged between the base and the cover body. According to the structure provided by the invention, a few of parts are used; the LVDS connector is convenient to mount, an assembling procedure is simplified and the cost is saved; locking and connection are stable and firm; and the FFC and the LVDS plate end have a plurality of types of mounting manners according to requirements and an application range is wide.

The invention discloses a fixed dressing for PICC-associated dermatitis in oncology department, relates to the technical field of auxiliary treatment equipment for postoperative wounds, and aims at the existing dressings which are easy to be misplaced in use position, inconvenient to replace the dressing, and the use rate of static dressing is low, and the wound In view of problems such as slow surface recovery, the following scheme is now proposed, including a storage box, the two sides of the storage box are fixedly connected with a connecting mechanism, and the connecting mechanism includes a cover plate, and a mounting plate is welded on the bottom of the cover plate. The outer ring of the mounting plate is provided with a connecting plate, which is welded with the outer wall of the storage box, and a cavity is opened in the connecting plate. The invention has a novel design structure, the position of the dressing is fixed simply and quickly, reducing the workload of medical staff, the bandage is elastic and the patient’s movement will not affect the degree of tightness, and the dressing is used for temperature control and heating to improve the recovery effect of the drug, which is beneficial to the absorption of the drug by the affected part, and assists in healing Speed, reduce patient discomfort, suitable for popularization.

The invention relates to the technical field of injection molding, in particular to an injection molding machine. The injection molding machine comprises a mold fixing seat, wherein the mold fixing seat comprises a first mold plate and a second mold plate, and the first mold plate and / or the second mold plate are / is installed on a first sliding rail and connected with a first hydraulic cylinder; a mold comprises a first mold body and a second mold body, the first mold body is installed in the first mold plate, and the second mold body is installed in the second mold plate; and a mold inner container is installed on a fixing frame, the fixing frame is installed on a second sliding rail, and the fixing frame is connected with a third hydraulic cylinder. According to the injection molding machine, the problem that an injection molding mechanism in the prior art can only perform injection molding for a product in one shape is solved. The injection molding mechanism of the injection molding machine comprises the mold fixing seat, an outer mold and the mold inner container, so that hollow structures in different shapes can be formed through injection molding. The mold fixing seat is detachably connected with the outer mold, so that only the outer mold and the mold inner container need to be replaced for products in different shapes, and the mold fixing seat does not need to be replaced.

An electromagnetic coil winding tool comprises a winding disc, wherein one side surface of the winding disc is connected with a power output shaft of a motor, a winding post is arranged at the center of the other side surface of the winding disc, the interior of the winding post is provided with a liquid cavity, a liquid flowing hole is formed in the surface of the liquid cavity and is communicated with the liquid cavity, a heating wire is arranged on the inner wall of the liquid cavity, and a paraffin supply cavity is communicated with the liquid cavity through a supply pipe. The electromagnetic coil winding tool has the advantages of high winding efficiency and easiness in die releasing.

The invention discloses a shooting device for an aerial photo holder. The shooting device is characterized by comprising two rotators, a connecting seat and a driving mechanism, the connecting seat is used for connecting the rotators, the driving mechanism is arranged on the connecting seat and used for driving the rotators to rotate on a horizontal plane, the rotators are arranged below the connecting seat, each rotator comprises a camera shell with a cavity and a camera obliquely arranged in the camera shell, a shooting hole corresponding to a lens of the camera is formed in each camera shell, the optical axis of each camera is downward, an included angle is formed between each optical axis and a vertical direction, and the driving mechanism comprises a power device and a transmission mechanism connected with the power device and the camera shells. Shooting angles can be flexibly adjusted, vibration absorption performance and sealing performance are fine, the working environment and the shooting quality of the cameras are ensured, and the shooting device can be widely applied to the aerial photo holder.

The invention discloses a device for preventing trouser legs of a car passenger from getting dust. The device comprises a shell, a spring slot, a spring, a baffle, a push rod and blocking cloth, wherein the spring slot is arranged on the inner side of the shell; the spring is arranged in the spring slot; one end of the push rod penetrates through the shell so as to be connected with the spring; the other end of the push rod is fixedly connected with the baffle; the blocking cloth is arranged on the outer surface of the baffle; a groove for accommodating the baffle is arranged in the outer side of the shell; the shell is fixedly arranged on a longitudinal beam located above a sill plate; the outer side of the longitudinal beam is in contact with the bottom part of a car door; an opening slightly larger than the baffle is arranged on the longitudinal beam. The device is impact and simple in structure, and is simple and convenient to operate, energy dissipation is avoided, the trouser legs of the car passenger can be prevented from getting dust of the sill plate of a car body, the problem that the trouser legs need to be cared by the passenger when getting on or off the car is solved, and meanwhile, the washing frequency of the car can be relatively reduced.

The invention discloses a three-in-one multifunctional wireless charging device which comprises a placement seat, a rotating seat is arranged on the placement seat, a charging support is arranged on the rotating seat, a wireless charger is fixedly installed on the charging support, a fixed seat is arranged on the placement seat, and a clock is installed on the fixed seat. And an elastic clamping frame is fixedly mounted on the fixed seat. The invention relates to a three-in-one multifunctional wireless charging device, and belongs to the field of wireless charging devices, an elastic clamping frame can ensure the fastening performance of a charging bracket after being stored, an elastic piece can ensure the storage effect of the charging bracket and can give way, unfolding and storage of the charging bracket are not affected, and an abutting spring can be detached, so that convenient replacement is realized; and through an arranged anti-skid bottom plate, a large friction force can be provided, the using stability of the device is guaranteed, meanwhile, the anti-skid bottom plate can be rapidly detached, and the using flexibility is improved.

The invention provides a sealed window based on lever swing and translation, which belongs to the field of doors and windows, and includes a window frame, a window sash and a roller structure. The roller structure includes a roller group, a fixed seat, a lever pick and a transmission column. The roller The group is slidably installed on the track of the window frame, the fixed seat is fixedly installed in the frame of the window sash, the lever pick is connected to the fixed seat in rotation to form a lever structure, and one end of the lever pick is connected to the roller group by transmission. The other end of the lever pick is connected to the transmission column, and the lever pick is connected to the lock bar of the anti-theft lock through the drive post. The movement of the lock bar drives the lever pick to rotate and indirectly drives the window sash to translate in a direction perpendicular to the push-pull direction, thereby adjusting The distance between the two sashes can not only ensure that there is a sufficient gap between the two windows when they are opened and closed, but also not affect the tightness between the two windows when they are still. It has the advantages of smooth sliding and good sealing. .

The invention discloses a dust-free device for trouser legs of car occupants, which comprises a casing, a spring groove, a spring, a baffle plate, a push rod and a blocking cloth. Inside, one end of the push rod passes through the casing and is connected to the spring, and the other end is fixedly connected to the baffle. The housing is fixedly installed on the longitudinal beam above the rocker plate, the outer side of the longitudinal beam is in contact with the bottom of the door, and the longitudinal beam is provided with an opening slightly larger than the baffle plate. The invention has a compact and simple structure, is easy to operate, and does not consume energy. It can prevent the dust and silt from the body sill plate from getting on the trouser legs of the occupants, avoid the trouble of carefully caring the trouser legs after getting on and off the car, and can relatively reduce the cleaning frequency of the car. .

The invention provides a temperature equalizing system for an autoclave. The temperature equalizing system comprises a fan and a motor; the fan is arranged inside a tank body of the autoclave; the motor is arranged outside the tank body; the motor is provided with a first magnetic body; the fan is provided with a second magnetic body matched with the first magnetic body, and the first magnetic body and the second magnetic body are arranged to enable the motor to drive the fan through the magnetic force between the first magnetic body and the second magnetic body. The invention also provides a temperature equalizing method for the autoclave. According to the temperature equalizing system and method for the autoclave disclosed by the invention, transmission from the motor to the fan is achieved by the magnetic force, thereby reliably sealing the autoclave in the temperature equalizing operation of the autoclave without a sealing material.

The invention discloses an emergency evacuation platform suitable for a high-speed maglev train, which belongs to the technical field of high-speed maglev traffic evacuation, and can be quickly unfolded from a folded state by arranging a telescopic evacuation support on the evacuation platform and utilizing the combined arrangement and corresponding control of all parts in the telescopic evacuation support. A continuous oblique step is formed between the evacuation platform and the train door, so that passengers in the train can be quickly evacuated to the evacuation platform through the telescopic evacuation support. The emergency evacuation platform is simple in structure and easy and convenient to arrange, continuous evacuation steps can be quickly and accurately formed between the ground at the door of the high-speed maglev train and the ground of the evacuation platform, emergency evacuation of the high-speed maglev train under emergency conditions is guaranteed, people are prevented from falling off from the train in the emergency evacuation process, and the emergency evacuation efficiency is improved. Personal safety and property safety of passengers are guaranteed, application of the high-speed maglev rail transit technology is promoted, and good application prospects and popularization value are achieved.

The invention discloses a sealing screw. The sealing screw comprises a screw body; the screw body consists of a conventional screw head and a screw rod; an oil injecting hole is formed in the center position of the screw head; an oil storage tank is longitudinally formed in the center position of the screw rod, and is perpendicular to the ground; the oil injecting hole communicates with the oil storage tank; an oil conducting channel is horizontally and vertically formed in the oil storage tank with the oil storage tank perpendicular to the ground as reference; the oil conducting channel is outwards radiated in a ray form to penetrate through the screw rod to communicate with the external; the oil injecting hole is a T-shaped structure, and is matched with a T-shaped rubber plug; an annular groove is formed in the lower side surface of the screw head of the screw body around the connecting place between the screw head and the screw rod; a sealing ring is arranged in the annular groove; and when the sealing ring is put in the annular groove, the lower edge of the sealing ring exceeds the lower edge of the annular groove.

The invention discloses an installation structure of an oil filter screen and an installation method thereof, and belongs to the technical field of oil filter screens. The installation structure comprises a plurality of connecting seats fixed on an oil filter screen body, a plurality of connecting columns fixed on a range hood body, clamping assemblies arranged on the upper surfaces of the connecting seats, and adjusting assemblies installed in the connecting seats and in transmission connection with the clamping assemblies; and the position and number of the connecting seats and the connecting columns correspond to each other one by one. The installation structure designed by the present invention is neither thread connection nor buckle or opening connection. The installation structure can be reused many times without deformation while tight fixation is ensured; the installation structure is convenient to install and is also suitable for the situation that when a range hood works, although little vibration is generated, the tightness is not affected; and hidden installation can also be achieved.