45results about How to "Will not harm" patented technology

The invention relates to the technical field of biological prevention and treatment, in particular to application of streptomyces cancefactiticus FJ-10 in prevention and treatment of corn diseases, a microbial agent and a pharmaceutical composition. The invention provides an application of streptomyces canceostimuli FJ-10 in prevention and treatment of corn diseases. The preservation number of the streptomyces canceostimuli FJ-10 is CGMCC (China General Microbiological Culture Collection Center) NO.27911. The invention further provides an application of the streptomyces canceostimuli FJ-10. The streptomyces cancericola FJ-10 provided by the invention not only has a very strong bacteriostatic effect on corn southern leaf blight pathogenic bacteria, namely, helminthosporium longibrachiatum, but also has a relatively good inhibiting effect on common corn diseases such as corn leaf blight, corn alternaria leaf spot, corn fusarium stem rot, corn sheath blight and corn stem rot. Field experiments prove that corn southern leaf blight can be effectively prevented and treated after corn plants are inoculated with the streptomyces cancericola FJ-10 fermentation liquor for 28 days.

The utility model relates to a vehicle-mounted waterproof high-precision satellite positioning antenna, which comprises a shell, a cover body and an antenna body hidden in the shell, and is characterized in that a first step and a second step which are annularly arranged are sequentially arranged on the inner side wall of the shell from outside to inside; a first convex part and a second convex part which are annularly arranged are correspondingly arranged on the cover body, the cover body is embedded on the shell, the first convex part is propped against the first step to form a first ultrasonic welding area, and the second convex part is propped against the second step to form a second ultrasonic welding area; an annular water blocking groove is formed between the first ultrasonic welding area and the second ultrasonic welding area. The waterproof and anti-seismic sealing LED lamp has excellent waterproof, anti-seismic and sealing performance, and has the advantages of good weather resistance, long service life and the like.

The invention provides a large-area-array infrared detector chip thinning method capable of protecting a metal electrode, and belongs to the technical field of infrared detector preparation. The problems that a photoresist protection circuit needs to be adopted firstly in a traditional back grinding and polishing process, the glue curing time is long, the process consumed time is long, and the efficiency is low are solved. Comprising the following steps: growing a dielectric layer for protecting a metal electrode on a chip; bonding the chip on the glass substrate, and pasting accompanying strips on the periphery of the chip; then grinding and polishing are carried out until the required chip thickness is reached; photoetching plates corresponding to the ROIC and the FPA of the chip are manufactured, the chip is taken down from the glass substrate after polishing is completed, then a layer of photoresist is evenly coated on the whole chip, metal electrodes on the periphery of the chip are exposed after development of the photoetching plates, and then post-baking is conducted on the chip; removing the dielectric layer; cleaning the photoresist on the surface; according to the invention, the metal electrode of the detector chip can be protected.

The utility model provides a fairy shrimp hatching device which comprises a hatching box, and the hatching box is provided with a light source piece, an aeration pipe and a filtering device. The output end of the aeration pipe is opposite to the top of the incubator; the light source piece is positioned below the horizontal height of the output end of the aeration pipe; the filtering device is arranged above the aeration pipe, the filtering device is provided with a filtering channel with the adjustable size, and the passing area of the filtering channel is adjusted, so that egg shells with different sizes and fairy shrimp larvae are thoroughly separated; the light source piece is arranged to attract fairy shrimp larvae, so that the fairy shrimp larvae are far away from egg shells, and when the aeration pipe upwards sprays gas, the fairy shrimp larvae cannot be damaged.

The utility model discloses a kind of vascular surgery arteriovenous fistula hemostasis device, it is related to vascular surgery technical field.Aiming at the problem that existing arteriovenous fistula hemostasis device is easy to cause fistula occlusion due to excessive compression, the utility model includes fixator and the pressurizer being set in the upper portion of fixator.The pressurizer is constituted by mounting cylinder, pressing assembly and power assembly, power assembly promotes pressing assembly to slide to exert pressure, when reaching maximum compression value, make pressing assembly and power assembly lock on mounting cylinder by self-locking mechanism, prevent excessive compression.Pressing assembly includes pressing slide bar and pressing head, and power assembly includes push rod and self-locking piece.Fixator is stably worn in the hemostasis site of patient by pressing plate and constraint assembly.The utility model is suitable for vascular surgery, nephrology, interventional department and other arteriovenous fistula hemostasis treatment, can effectively stop bleeding and avoid fistula occlusion risk.

The utility model provides a slow collapsible hinge, which relates to the technical field of hinges and comprises a collapsible mechanism, the top of the collapsible mechanism is provided with a limiting mechanism, the collapsible mechanism comprises a wall plate, one side of the wall plate is provided with a fixing plate, the outer side of the fixing plate is provided with a hollow ring, the hollow ring is internally provided with an arc-shaped block, and the arc-shaped block is connected with the limiting mechanism. A center roller is arranged at one end of the arc-shaped block, and a hollow ring is arranged on the outer side of the center roller. Under specific conditions, when large pressure is applied to the leaf plate, the outer ring can be pressed and extruded, meanwhile, the inner ring can be pressed to the arc-shaped block in the same mode, the arc-shaped block is forced to deform, and the hinge cannot be damaged, so that even if the leaf plate generates large pressure, the hinge can still keep complete functions, and the service life of the hinge is prolonged. Normal operation of the device is ensured, and the service life of the hinge can be prolonged through the design of dispersing pressure and reducing extrusion force.

The utility model discloses a nuclear radiation alarm which comprises a base, the top of the base is connected with an alarm body, a second base comprises a shell, the inner wall of the top of the shell is connected with a fixed rod, the fixed rod is connected with a movable rod in a sliding mode, and the bottom end of the movable rod is connected with a connecting plate. A first spring is connected between the top end of the moving rod and the inner wall of the top of the shell, the fixed rod is movably sleeved with the first spring, control rods are connected to the two sides of the connecting plate correspondingly, the ends of the control rods extend out of the adjusting holes of the shell, and hinged rods which are obliquely arranged are rotationally connected to the left side and the right side of the connecting plate correspondingly. According to the utility model, the control rod is pressed to drive the suction cup to exhaust the air of the suction cup, so that the suction cup is adsorbed on the wall under the action of the first spring, the alarm body is fixed, the design avoids the traditional punching installation mode, the wall is effectively protected, the physical damage is prevented, and the safety of the alarm is improved. And the overall structural stability of the building is ensured.

This utility model discloses a magnetic charging base for walkie-talkies, relating to the field of charging technology for wired communication equipment. It includes a base assembly, and a magnetic head assembly is used for charging the walkie-talkie. The magnetic head assembly is connected to a control box assembly via a plug cable. The end face of the base assembly has a charging interface, a groove, and an anti-slip liner, while the end face of the magnetic head assembly has a charging port, a magnetic surface, and a protrusion. This magnetic charging base for walkie-talkies uses a magnetic connection for charging through the cooperation of the charging interface, charging port, and magnetic surface. It utilizes magnetic force to achieve a fast and stable connection, eliminating the need for cumbersome physical plugging operations, making operation simple and convenient. Simultaneously, the mechanical interlocking of the groove and protrusion assists the magnetic connection, and the high-friction anti-slip liner forms a three-dimensional anti-slip mechanism, solving the problem of insufficient stability in traditional magnetic charging and achieving a multi-dimensional anti-displacement effect.

The application provides a kind of electric automobile battery cooling system set blowing system integrated device, belongs to battery cooling technical field. Including box, the top of box is boltedly connected with box cover, the two sides of box are inserted with circulating pipe, the outer wall of circulating pipe is sequentially fixedly connected with water pump, radiator and expansion kettle, the outer wall of circulating pipe is sleeved with heater, the side of radiator is fixedly connected with three-way pipe;Cooling assembly, cooling assembly is used to assist staff to install battery and cool battery, cooling assembly is connected with box and box cover. The application can fix and limit square battery after staff installs cooling assembly, achieve the effect of installing and fixing square battery through cooling assembly, facilitate staff to install square battery, and cooling assembly can wrap four sides of square battery, improve the cooling range and cooling effect of square battery.

The present invention relates to the technical field of pharmaceutical preparation preparation, and specifically discloses a lyophilized preparation of gabexate mesylate and a preparation method thereof. The preparation method of the lyophilized preparation of gabexate mesylate provided by the present invention improves the pre-freezing process by optimizing the preparation method of the lyophilized preparation of gabexate mesylate without adding any lyophilizing excipient, so that the prepared lyophilized preparation of gabexate mesylate has a larger and uniform crystal form, and improves the appearance of the lyophilized preparation; it is also beneficial to further increase the number of channels for sublimation drying, so that the lyophilized preparation of gabexate mesylate maintains a good appearance consistent with the product with added excipients. The lyophilized preparation of gabexate mesylate prepared by the preparation method provided by the present invention only needs one main ingredient to achieve the effect that the indicators in terms of product shape, drying loss detection and related substance detection are better than the original research drug, the quality stability is good, the drug safety is high, and it is suitable for factory production.

The present invention belongs to the field of tempered film detection equipment, and in particular, relates to a quality detection method for tempered film of a smart phone, including a frame, a fixed plate, fixed plates are fixedly arranged on both sides above the frame, a feeder is connected to one side of the two fixed plates, a rotatable rotating belt is symmetrically distributed on both sides of the feeder, guide inclined wheels inclined inward are arranged on both sides of the rotating belt, and a plurality of partitions are evenly arranged on the rotating belt along the contour line direction, a clamping table is slidably arranged above the frame below the feeder, and a plurality of suction heads for adsorbing the tempered film are slidably arranged on the upper end surface of the clamping table, a fixed horizontal plate is connected between the fixed plates on one side of the feeder, a fixed seat is arranged in the middle of the fixed horizontal plate, an impact cylinder is arranged on the fixed seat, a push plate is slidably arranged at the output end of the impact cylinder, a push rod is connected to the lower part of the push plate, a push rod base is connected to the lower part of the push rod, and a plurality of impact heads are arranged below the push rod base. The present invention can effectively detect the impact strength of the tempered film.

The present invention relates to a liquid rocket engine ground test technology, and specifically to a rocket engine test equivalent device test system and a test method thereof. The present invention solves the technical problem that there is no direct measuring instrument for measuring the electrical performance parameters of the control loop of the existing rocket engine ground control system, making it difficult to ensure the measurement accuracy. The equivalent device test system of the present invention includes an equivalent device and an equivalent device tester; the equivalent device includes a multi-channel equivalent electric squib resistor and a multi-channel equivalent solenoid valve resistor; the equivalent device tester includes a current acquisition and conditioning unit, an ARM+FPGA processing unit, a monitoring unit and four external connectors; the current acquisition and conditioning unit includes a current sensor, a conditioning circuit and a synchronous ADC chip; the current acquisition and conditioning unit converts the current signal into an isolated voltage signal after conditioning, and the synchronous ADC chip processes the isolated voltage signal and transmits it to the ARM+FPGA processing unit; the ARM+FPGA processing unit is used to communicate data and instructions with the monitoring host.

The invention provides an electric drive system, an electric drive system control method and device and an electric drive system controller, and relates to the technical field of electric drive systems, the electric drive system comprises an inverter, a capacitor, a protection device and a motor; wherein the protection device is connected between the bus positive wire harness and the bus negative wire harness, and the capacitor is connected with the protection device in parallel; wherein the first withstand voltage threshold value of the protection device is greater than the maximum counter electromotive force of the motor or the normal working voltage of the power supply device, and the first withstand voltage threshold value is smaller than the withstand voltage values of all high-voltage devices in the electric drive system, so that under the condition that the original ASC path fails, when the electric drive system is abnormal, a new ASC path is established, and the normal working condition of the electric drive system is ensured. And the driving safety is improved, and the maintenance cost is reduced while the power supply and the inverter are protected from being damaged.

The invention discloses a laser intensity detection device and method based on a vacuum environment. The laser intensity detection device comprises a cavity, a photoelectric sensor and a detector. At least two through holes and an air exhaust hole are formed in the periphery of the cavity; wherein a channel for laser transmission is formed between the two through holes, and the two through holes can be communicated with an external device through a pipeline; the air exhaust hole is connected with external vacuumizing equipment; the photoelectric sensor is movably installed in the cavity and can be switched to the middle of the channel so as to cut off a measurement state of a light path or switch to an idle state that the light path of the channel is smooth. And the detector is electrically connected with the photoelectric sensor. The invention relates to the technical field of laser intensity detection, through the arrangement, the intensity of the laser formed in a vacuum environment is detected by switching the position state of the photoelectric sensor, the vacuum or light path does not need to be damaged, and the detection of the light intensity is completed on the premise that the original light path in equipment is not interfered.

The utility model relates to the technical field of motor home frames, in particular to a pull type motor home frame structure and a motor home. The caravan frame structure comprises a frame body, flying wings and a traction frame. The frame body comprises a cross beam and longitudinal beams on the two sides, and the cross beam is detachably connected with the longitudinal beams; the flying fins are detachably installed on the outer side faces of the longitudinal beams, the top faces of the flying fins are sequentially a connecting face, a transition face and a supporting face, the transition face is an inclined face, the supporting face is higher than the connecting face, concave reinforcing ribs are arranged on the vertical faces of the flying fins, and the top edges of the reinforcing ribs are the same as the top faces of the flying fins in shape. The traction frame comprises a left beam and a right beam, the front ends of the left beam and the right beam intersect at one point, the middles of the left beam and the right beam are detachably connected with the cross beam, and the rear ends of the left beam and the right beam are detachably connected with the longitudinal beam. According to the utility model, rapid production and assembly of the frame are realized, light weight, rapid assembly and convenient transportation are realized, and market requirements are met.

This invention relates to the technical field, specifically a method for laying a flexible, intelligent hydrogen transmission pipeline that enables rapid installation. The pipeline includes a polyethylene pipe, the outer side of which is covered with a second adhesive layer. The polyethylene pipe and the second adhesive layer are bonded together by a fiberglass tape reinforcing layer. The outer side of the second adhesive layer is covered with a first adhesive layer, and the second adhesive layer and the first adhesive layer are bonded together by an aluminum foil layer. The first adhesive layer is then covered with a polyethylene pipe protective sleeve. This invention avoids secondary excavation of the pipeline, does not damage existing roads and facilities, does not harm urban green spaces, avoids road congestion caused by construction, utilizes existing or abandoned pipelines, allows for rapid installation, requires fewer personnel, is unaffected by weather, and shortens the construction period.

The application belongs to the field of antimicrobial materials, and discloses an antibacterial bioactive coating and a preparation method thereof. The application converts β-cyclodextrin into a dialdehyde derivative through periodic acid oxidation, and copolymerizes the dialdehyde derivative with acrylated chitosan under the initiation of ultraviolet light free radicals to prepare an intelligent copolymer which can be specifically cut by β-cyclodextrinase. Natural plant polyphenols are loaded in the copolymer to realize enzyme-triggered precise release and maintain long-acting antibacterial activity. After coating, the solvent is removed, the micropores are closed, and the molecular-level secondary crosslinking is completed in one step under the treatment of supercritical CO2 environment at 35 MPa and 40 DEG C for 2 hours. Traditional high-temperature drying is not needed, internal stress and crack generation are significantly reduced, and the stability of the pores is improved. The final coating has self-repairing, high adhesion and scrub resistance, and the preparation process is environmentally friendly and efficient, and is suitable for the surface long-acting antibacterial protection of medical devices, food packaging and public facilities.

The present invention relates to an ink composition, an organic material layer comprising the same, and an organic light emitting device comprising the same.

The utility model relates to the technical field of intelligent Internet of Things control, and discloses an energy-saving controller based on intelligent Internet of Things. The device comprises a device housing which is internally provided with a connection socket, a connection plug, an infrared human body sensor, a millimeter wave radar, a physical button, an infrared controller and a trigger type induction switch. The connecting socket, the connecting plug, the infrared human body sensor, the millimeter wave radar, the physical button and the infrared controller partially extend out of the equipment shell, conductive frames electrically connected with the connecting socket and the connecting plug are arranged on the connecting socket and the connecting plug, and an electric opening and closing mechanism is arranged in the equipment shell. According to the utility model, the split-type air conditioner can be controlled without networking, so that the split-type air conditioner can be determined to be turned on or turned off by detecting whether a person exists in a target area or not, and the aim of saving energy is fulfilled.

The utility model discloses a cleaning device for a smelting furnace heat storage ball, which comprises a chassis, a conical hopper disc, a separation net and a spiral channel, the conical hopper disc is arranged on the chassis, the spiral channel is arranged on the conical hopper disc, the spiral channel is sequentially divided into a cleaning section, a blowing section, a cleaning section and a draining section along the advancing direction of the heat storage ball, and the spiral channel is arranged with a high outside and a low inside. The separation net is installed above the draining section, a water outlet and a ball outlet are formed in the center of the spiral channel, the ball outlet is higher than the water outlet, and the ball outlet is communicated with the center of the separation net. The device is compact in structure, suitable for small-space operation and convenient to carry and move, in addition, the heat storage balls can be sequentially cleaned, blown, cleaned and drained through the spiral channel, the purpose that the heat storage balls can be used after being cleaned is achieved, the heat storage balls cannot be damaged, and the device is convenient to use and thorough in cleaning.

A high-temperature moisture and dust removal device in production of a biomass granulator comprises a moisture removal pipe (1) communicated with a pinch roller chamber of the biomass granulator, a venturi tube (2) connected to the outer end of the moisture removal pipe, a high-pressure fan (3) connected to one end of the venturi tube and a pulse type cyclone bag-type dust collector (4) connected to the other end of the venturi tube. The high-pressure fan sprays high pressure to the Venturi tube, negative pressure is formed in the Venturi tube, a pressing wheel chamber of the biomass granulator is in a negative pressure state, and moisture and dust in the pressing wheel chamber are automatically pumped and conveyed to the pulse type cyclone bag-type dust collector (4). According to the utility model, high-temperature moisture and dust in the production of the biomass granulator can be effectively removed, and the equipment is not easy to damage.

The invention belongs to the technical field of battery positive electrode accessory processing and conveying, and particularly relates to a conveying device for battery positive electrode accessory processing, which comprises a base frame, a conveying frame is arranged at the upper end of the base frame, a conveying structure is arranged on the surface of the conveying frame, and the conveying structure is used for conveying a battery positive electrode plate. An adjusting structure is arranged on the surface of the conveying structure; the conveying structure comprises rubber conveying rollers, and the multiple rubber conveying rollers are rotationally connected to the inner wall of the conveying frame. By arranging the clamping plate and the demagnetizing device, the two faces of the battery positive plate can be demagnetized in the conveying process of the battery positive plate, the battery positive plate cannot be damaged by adjustment of the front face and the back face of the battery positive plate, and the receiver arranged on the inner wall of the conveying frame can also be used for receiving the battery positive plate when the battery positive plate enters the clamping plate. And the clamping plate rotates automatically, so that the problem that the clamping plate turns over when the positive plate of the battery does not completely enter the clamping plate is avoided.

The utility model discloses a steel billet position detection device, relates to the field of steel making, and solves the technical problems of sensor damage, inaccurate detection, high maintenance cost and high consumption cost which are easily caused by a correlation grating detection mode in the existing high-temperature environment. The device comprises a rotating shaft and a second mounting structure, the rotating shaft is rotatably mounted above a roller way through the first mounting structure, an impact plate is fixedly mounted on the rotating shaft, the impact plate is located above the roller way and extends to a traveling path of a steel billet, an adjusting plate is fixedly mounted at one end of the rotating shaft, and the adjusting plate is fixedly mounted on the rotating shaft. The adjusting plate is fixedly connected with a balancing weight through a connecting rope, the balancing weight is movably inserted into a second mounting structure in a penetrating mode, and the second mounting structure is fixedly provided with a proximity switch. Compared with a correlation grating in the prior art, the utility model has the characteristics that the correlation grating is not easy to be damaged by heat radiation, the synchronous vibration is not easy to cause signal offset, the maintenance cost is lower, and the consumption cost is lower.

The utility model discloses a die extrusion device, which belongs to the technical field of die-casting die extrusion, is used for extruding the position of a product on a die-casting die, which is easy to generate air holes, and comprises an extrusion needle, a needle sleeve, an extrusion oil cylinder and a connecting rod, the extrusion needle is partially arranged in the needle sleeve, the needle sleeve is arranged in the die, one end of the connecting rod is connected with the extrusion needle, and the other end of the connecting rod is connected with the extrusion oil cylinder. And the other end of the pressing sleeve is connected to the extrusion oil cylinder. One end of the pressing sleeve is mounted and connected to the mold through the positioning groove. The other end of the pressing sleeve abuts against the extrusion oil cylinder. The first pressing plate is connected to the extrusion oil cylinder and further connected to the mold. According to the die extrusion device, by arranging the pressing plate and the pressing sleeve, replacement can be more convenient and faster, other parts cannot be damaged, meanwhile, one end of the pressing sleeve is connected with the die, the other end of the pressing sleeve abuts against the extrusion oil cylinder to form a clearance with the connecting rod and the extrusion needle, and the contact area with the needle sleeve can be guaranteed; concave pressing of the needle sleeve due to long-term stress is avoided.

The utility model provides a detachable material layer for roof waterproofing and heat insulation, which comprises a plurality of material modules connected to form a material layer main body, and each material module comprises an external waterproof layer and a heat insulation layer arranged in the waterproof layer; the detachable material layer for roof waterproofing and heat insulation can be rapidly formed after being smeared, can be rapidly attached to the surface of a building, is greatly enhanced in hydrophobicity and heat insulation capacity, is used for an outer wall and a top floor of a dangerous chemical storage room, can effectively insulate heat, and avoids the situation that the room temperature is too high due to the fact that the surface of a house is directly irradiated by the sun; the chemicals react at a high temperature, and the good hydrophobicity can prevent the chemicals from deteriorating and reacting due to the fact that the chemicals are stained with water; the utility model has the detachable capability, and can meet various use requirements.

This utility model discloses a tilting core-pulling mold, including an upper mold plate and a lower mold plate. An upper mold core is installed inside the upper mold plate, and a lower mold core is installed inside the lower mold plate. In-mold screws connect the upper mold plate and the upper mold core, and the lower mold plate and the lower mold core. A product forming cavity is formed between the upper and lower mold cores. A hydraulic cylinder is installed on the outside of the lower mold plate. The drive end of the hydraulic cylinder is connected to a slider guide seat. An tilting groove is provided on the slider guide seat, and a tilting slider core is slidably connected to the tilting groove. The upper end of the tilting slider core is inserted into the product forming cavity. This tilting core-pulling mold is designed for die-casting products with tilted structures. By using a hydraulic cylinder to control the tilting slider core to tilt at a certain angle, the tilted structure of the product is not damaged during demolding, and the internal structure of the mold is saved, reducing the manufacturing cost of the mold.

The utility model discloses a pressure-resistant tear-resistant rubber flame-retardant power cable, which comprises a cable core, a first wire core is arranged in the middle of the inside of the cable core, a second wire core is arranged on the periphery of the outside of the first wire core, the first wire core and the second wire core are clamped, a composite insulation shielding layer is arranged outside the cable core, and the composite insulation shielding layer is arranged outside the cable core. The composite insulation shielding layer is composed of an inner insulation layer, an anti-interference layer and an outer insulation layer, the composite insulation shielding layer is wrapped by the composite flame-retardant layer, the composite flame-retardant layer is composed of a flame-retardant base material layer and a flame retardant layer, the composite flame-retardant layer is wrapped by the pressure-resistant and tear-resistant protective layer, and the flame-retardant base material layer is wrapped by the flame-retardant protective layer. The pressure-resistant and tear-resistant protective layer is composed of a pressure-resistant layer, a reinforcing layer and a wear-resistant outer layer. The problem that the pressure-resistant and tear-resistant effects of the power cable are poor is solved.

The invention relates to the technical field of vacuum bag cleaning, and discloses a cleaning device for vacuum bag conveying, which comprises a rewinding machine and a rewinding frame, a continuous cleaning assembly is arranged between the rewinding machine and the rewinding frame, the continuous cleaning assembly comprises a cleaning shell, a cleaning screw rod and a driving part, the cleaning shell is fixedly connected between the rewinding machine and the rewinding frame, and the cleaning screw rod is fixedly connected between the cleaning shell and the rewinding frame. The side, close to the rewinding machine, of the cleaning shell is arranged to be trapezoid, when a vacuum bag passes through the cleaning shell, under the trapezoid structure, small dust is blown away by airflow through the guiding effect of an inclined face, primary cleaning of the surface of the vacuum bag is achieved, meanwhile, the cleaning lead screws located in the vertical direction rotate to conduct secondary cleaning on the vacuum bag, and in the rotating process of the cleaning lead screws, the cleaning lead screws can clean the surface of the vacuum bag. The contact area between the dust removal device and the vacuum bag is not large and continuous, the contact mode can effectively remove impurities and cannot damage the vacuum bag, dust and the impurities are easily brought to the two sides of the vacuum bag under the rotation effect, and impurity residues are effectively avoided.

The utility model discloses a gas detector filtering structure which comprises a gas inlet pipe arranged at the top of a gas detector body, a gas filter is arranged above the gas inlet pipe, and a connecting assembly used for reinforcing the gas filter is arranged outside the gas inlet pipe in a sleeved mode. The bottom of the connecting assembly is connected with the top of the gas detector body, and the gas inlet pipe is communicated with the bottom of the gas filter through the connecting assembly; according to the gas detector, the sleeve is located outside the gas inlet pipe and does not make contact with the gas inlet pipe, the gas inlet pipe can be protected and prevented from being directly collided and polluted by the outside, then the purpose of protecting the gas detector body is achieved, when the gas filter is collided and impacted, the gas inlet pipe cannot be directly influenced, and the gas detector is safe and reliable. The distortion and the deformation of the gas inlet pipe cannot be caused, and the stable installation and the stable use of the gas filter can be ensured when gas detection is carried out.