53results about How to "Simple and safe operation" patented technology

The invention relates to the technical field of ferrous metallurgy casting, in particular to a drainage sand removing and recycling method and device. Comprising a mechanical arm, a lifting rotation controller, a controller arm, a sand suction cylinder, a sand conveying pipeline, a sand collecting tank and an injection pump. The lifting and rotating controller is fixedly mounted on the mechanical arm; the controller arm is connected with the lifting and rotating controller, and the lifting and rotating of the controller arm are controlled by the lifting and rotating controller; the sand suction cylinder is connected with the controller arm, the sand suction cylinder is of a U-shaped structure, and one end of the sand suction cylinder is a horn mouth used for sucking drainage sand; one end of the sand conveying pipeline is positioned above the tundish cover sprue gate, and the end part of the sand conveying pipeline is bent downwards to be connected with the other end of the sand suction cylinder; the other end of the sand conveying pipeline is connected with the sand collecting tank; the sand collecting tank is connected with an injection pump pipeline, and the injection pump provides suction power. The ladle filler sand, harmful gas in gaps of the ladle filler sand and a long nozzle and a small part of molten steel in contact with the ladle filler sand in a steel ladle can be discharged out of tundish molten steel and recycled.

The utility model relates to a continuous casting process stuffing sand collecting device which comprises a stuffing sand receiving hopper, a cross beam rod, a lead screw guide rail, a support and a movable sliding rail, the stuffing sand receiving hopper is connected to one end of the cross beam rod, and the other end of the cross beam rod is connected with the lead screw guide rail and can be driven by a lead screw guide rail motor to move horizontally. The lead screw guide rail is fixed to the top of the support, the support walks along the movable sliding rail, and the movable sliding rail is arranged on one side of the tundish. Aiming at the problems of time and labor waste and potential safety hazards in the prior art, the ladle filler sand in the ladle nozzle can be quickly and safely collected, and the purity of molten steel is improved.

This utility model discloses an elevator water-blocking device with a water-blocking function, including a water-blocking gate, a servo motor, a reel, and a lifting steel wire. The servo motor and the reel are located above the sill of the elevator hall door. The lifting steel wire connects the water-blocking gate and the reel. The servo motor controls the rotation of the reel and the lifting steel wire, causing the water-blocking gate to be transported to the sill of the elevator hall door for storage or to the floor of the hall door for water blocking. An elevator system incorporating this water-blocking device is also disclosed. This utility model features a concealed and aesthetically pleasing design, is easy to install, and provides active and efficient water-blocking sealing. It forms a physical watertight barrier, effectively preventing external floodwater from flowing into underground spaces, protecting underground equipment from water damage, and is suitable for various newly built or existing locations.

The utility model provides a product surface burr removing device suitable for a machining center and the machining center, the product surface burr removing device comprises a mounting handle, a sleeve and a brush body, the mounting handle is coaxially mounted at the bottom of a main shaft of the machining center; the top of the sleeve is provided with a clamping part which is coaxially clamped at the bottom of the mounting handle, the bottom of the sleeve is provided with a brush mounting cavity, and the brush body is coaxially and slidably mounted in the brush mounting cavity and is fixed through a quick release part; an elastic piece is installed between the top of the brush body and the cavity bottom of the brush installation cavity and used for applying downward elastic force to the brush body. The deburring technology is integrated in the machining center, the brush is directly driven to work through the main shaft, operation is safe and convenient, labor intensity and safety risks can be effectively reduced, the consistency of the deburring effect can be guaranteed, and therefore product quality is improved, investment of independent deburring equipment is omitted, the production cycle is remarkably shortened, and production cost is reduced. The length of the brush can be quickly adjusted through the quick release piece and the elastic piece so as to compensate the abrasion loss of the brush.

The utility model discloses a vehicle-mounted drawing hidden mobile phone support, which comprises a shell and a hidden drawing module, the hidden drawing module and the shell are inserted in a drawer manner, an aromatherapy rod is movably inserted into the hidden drawing module, and the mobile phone support is rotatably arranged in the hidden drawing module. The drawing module can be completely contained in the shell, the driving view is prevented from being blocked, the interior of a vehicle is kept clean and tidy, the mobile phone support is horizontally contained in the groove in the conventional state and can be unfolded for use only by drawing, the aromatherapy grid is integrated on the edge of the drawing plate, the aromatherapy rod is supported to be freely inserted and pulled, the vehicle-mounted aromatherapy function is achieved, and the aromatherapy rod is convenient to replace due to the design of the rotating cover; and user experience is improved.

The invention provides a high-rise building outer wall anti-permeability performance field detection device and method, and relates to the technical field of outer wall anti-permeability performance detection. The on-site detection equipment for the impermeability of the outer wall of the high-rise building comprises a storage box, a water injection pipe is fixedly arranged at a water injection opening of the storage box, the upper end of the water injection pipe is sleeved with a sealing threaded plug in a threaded mode, a booster pump is fixedly arranged on one side of the storage box, and a clamping rod frame is fixedly arranged on the other side of the storage box; a data display touch screen is fixedly arranged at the center of the side, away from the storage box, of the clamping rod frame, a fixing base is fixedly arranged on the side, close to the lower end, of the top face of the storage box, a water pump is fixedly arranged at the lower end of the fixing base, and a three-way pipe penetrates through the storage box and is fixedly arranged at a water outlet of the water pump. According to the on-site detection equipment and method for the anti-permeability performance of the outer wall of the high-rise building, the on-site detection equipment for the anti-permeability performance of the outer wall of the high-rise building is safer during detection, the operation is simple, and the use is convenient.

This invention discloses a rotary jet suction dredging device, comprising a floating platform on which a vacuum jet pump connected to a drive mechanism and a guide mechanism is mounted; the drive mechanism includes two mutually perpendicular hydraulic telescopic rods, one end of which is hinged to the floating platform, and the other end of which is connected to the side wall of the vacuum jet pump via a universal joint; the guide mechanism includes inner and outer guide sleeves fitted around the vacuum jet pump, the inner guide sleeve and the vacuum jet pump being connected via coaxial left and right rotating shafts, and a coaxial front and rear rotating shaft passing through the outer guide sleeve, one end of which is connected to the inner guide sleeve, and the other end of which is connected to the floating platform, with the front and rear rotating shafts perpendicular to the left and right rotating shafts; the outer guide sleeve is provided with front and rear clearance grooves to accommodate the passage of the inner guide sleeve; the vacuum jet pump is connected to a suction head, a high-pressure air supply pipe, and a sludge conveying pipe. This invention achieves dredging needs covering all water depths from shallow to deep water, with high dredging efficiency and safe and simple operation.

This utility model discloses a down-filling and down-dusting device for down jacket processing, relating to the field of down jacket production and processing technology. It includes a processing box and two beating plates, and further comprises an adjustment unit and a feeding unit disposed within the processing box. The adjustment unit includes a servo motor, a lead screw, a moving block, a rectangular frame plate, a first sliding rod, a first sliding block, and a supporting spring. A strip-shaped mounting groove is formed at the center of the top surface inside the processing box, and the servo motor is installed in the strip-shaped mounting groove. The lead screw is installed at the output end of the servo motor. The feeding unit includes a second sliding rod, a second sliding block, a support frame, a pull plate, and casters. The second sliding rod is fixedly disposed at the center of the bottom surface inside the processing box, and the second sliding block is movably disposed on the second sliding rod. In this utility model, down jackets on the support frame can be safely picked up and fed, and the device's down jacket picking and feeding operations are simple and safe, eliminating the need for repeated starting and stopping of the drive equipment.

The utility model discloses a peeling device used for an insulated cable, which comprises a base and a support frame installed on the base, the support frame is of a U-shaped structure and is internally provided with a cutting structure, the cutting structure comprises an adjusting screw rod and a sliding frame, two sides of the interior of the support frame are provided with guide sliding grooves, and the adjusting screw rod and the sliding frame are arranged in the guide sliding grooves. The two sides of the sliding frame are slidably arranged in the guide sliding grooves, the adjusting screw rod penetrates through and is in threaded connection with the top of the supporting frame, the bottom of the adjusting screw rod is rotatably arranged at the top of the sliding frame, an adjusting knob is arranged at the top of the adjusting screw rod, the supporting frame is of a U-shaped structure, and a cutting shaft is rotatably arranged in the supporting frame; and a cutting wheel is mounted in the middle of the cutting shaft. The utility model relates to the technical field of insulated cables, and specifically provides a peeling device for an insulated cable.

This utility model discloses a sliding rod-linked three-state transformation wheelchair mechanism, including a backrest structure, a seat structure, an armrest structure, a posture transformation structure, a chassis structure, foot pedals, front wheels, and rear wheels. This utility model uses an electric push rod hinged at one end to the front chassis rod to drive a sliding rod to slide on a slide rail. Simultaneously, the sliding rod links two actuators: one pulls the sliding rod-backrest linkage rod connected to the backrest, causing the backrest support to rotate around the hinge axis between the backrest pivot and the seat pivot; the other pulls the movable ends of the rear and front links of a four-bar linkage mechanism, with the seat as the movable link and the frame end hinged and fixed to the side chassis rod. This synchronously drives the rotation of the backrest and the rotation of the rear and front links of the four-bar linkage mechanism, achieving coordinated transformation of the backrest angle and the seat posture. This utility model integrates a push rod-slide rail-linkage integrated power transmission chain, which can simultaneously decompose a single-point linear driving force into a composite action of backrest rotation and seat displacement.

The present application relates to a kind of electrically conductive rod assemblies and through core support insulator.Electrically conductive rod assembly includes: electrically conductive rod;Two electrically conductive blocks are provided, and two electrically conductive blocks are respectively at the two ends of electrically conductive rod;Supporting disc is arranged in the side of electrically conductive block towards electrically conductive rod, supporting disc is equipped with supporting disc threaded hole and supporting disc perforation, supporting disc threaded hole is at the central position of supporting disc, and supporting disc perforation is at least two and is arranged with interval around supporting disc threaded hole;The side of electrically conductive block towards supporting disc is equipped with conical hole, and the size of the end of conical hole close to supporting disc is greater than the size of the end of conical hole away from supporting disc;The end of electrically conductive rod is equipped with conical section and threaded section, threaded section is connected with supporting disc threaded hole by screw thread, and conical section is inserted with conical hole;Fastening bolt is connected in electrically conductive block by screw thread through supporting disc perforation, to press electrically conductive rod on electrically conductive block by supporting disc, and then make conical section and conical hole closely contact.

This utility model discloses a concrete manhole cover, belonging to the field of manhole cover technology. It includes a main body, with a manhole cover body rotatably connected to the outer surface of the main body. The manhole cover body is movably fitted against the inner walls on both sides of the main body. A connecting component for opening and closing the manhole cover body is provided between the main body and the manhole cover body. Reinforcing components are provided on the outer surface and inside of the manhole cover body to enhance its strength. High-pressure gas drives the piston rod to extend and retract, providing continuous lifting force, reducing manual lifting effort, making it particularly suitable for single-person operation. It forms a stable four-bar linkage with the pneumatic strut, ensuring smooth lifting and lowering of the manhole cover body without the risk of tilting. When opened to the maximum angle, the pneumatic strut's self-locking valve closes, achieving rigid suspension. When closed, the locking pin automatically retracts under pressure from the inner wall of the connecting groove, and after reaching its position, a spring pops out to form a rigid locking. Unlocking is achieved by pulling the lever to trigger the retraction of the locking pin. Operation is simple and safe.

The movable paint spraying shed comprises a walking paint spraying shed body, an air inlet structure and an air outlet structure, the air inlet structure and the air outlet structure are communicated with the walking paint spraying shed body, the air outlet structure comprises a main air outlet channel and an auxiliary air outlet channel which are parallel to each other and arranged in the walking direction, a fence is arranged in a preset area, and the main air outlet channel is located on the inner side of the fence; the auxiliary air outlet channel is located on the side, close to the fence, of the paint spraying shed, the auxiliary air outlet channel and the fence are arranged side by side in the height direction, a purification device is arranged on the outer side of the fence, and the main air outlet channel communicates with the purification device and is provided with multiple first connecting ports arranged at intervals in the walking direction. The auxiliary air outlet channel is communicated with the paint spraying shed and is provided with a connecting interface II, and the connecting interface II can be driven to be in butt joint communication with any connecting interface I, so that waste gas in the paint spraying shed is discharged after being treated by the purification device. And the spraying operation requirements of large-scale or long-rod components are met.

The invention discloses a method for preparing 5-methoxytryptamine by a one-pot method, which comprises the following steps: by taking 1, 2, 3, 4-tetrahydro-6-methoxy-1-oxo-beta-carboline as a raw material, neutralizing by using strong acid instead of traditional acetic acid during ring-opening reaction, and carrying out decarboxylation reaction on a ring-opening product without separating to prepare the 5-methoxytryptamine. The method can completely avoid the generation of sodium acetate in the ring-opening reaction in the traditional technology, reduces the influence on the next decarboxylation reaction, and can directly perform the decarboxylation reaction without separating the ring-opening product, thereby effectively solving the problem that the decarboxylation reaction needs to be directly performed in the prior art. According to the method for preparing the 5-methoxytryptamine by using the 2, 3, 4-tetrahydro-6-methoxy-1-oxo-beta-carboline as the raw material, the defects that weak acid is left and an intermediate needs to be separated in the method are overcome, and the reaction route is shortened. The method improves the product yield and purity, has the advantages of simplicity and convenience in operation, high product purity, less three wastes and low cost, and is suitable for large-scale industrial production.

The lifting device comprises a continuous anode, the periphery of the continuous anode is sleeved with a clamping frame, a plurality of anode guide rods are arranged between the clamping frame and the continuous anode, and a pressing mechanism enabling the anode guide rods to make contact with the continuous anode is installed on the clamping frame or the anode guide rods. A lifting mechanism connected to the anode guide rod is arranged on the clamping frame and comprises a first driver, a second driver and a lifter, a screw sleeve penetrates through the lifter, a lifting rod penetrates through the screw sleeve, a screw sleeve connector connected with the second driver is arranged on the upper portion of the screw sleeve, and a hanging rod is connected to the lower portion of the lifting rod. An anode bus is arranged on the outer side of the anode guide rod, and a soft belt is arranged between the anode bus and the anode guide rod. The first driver and the second driver do not influence each other, the functions do not conflict, the complementarity is high, the work of adjusting the polar distance and regulating and controlling the distance between the anode guide rod and the liquid electrolyte is completed, and the continuous anode is reliably, stably and efficiently lifted in the whole process.

The utility model relates to the technical field of special-shaped steel plate pressing, in particular to a special-shaped steel plate pressing device which comprises a main body frame, a pressing plate assembly arranged in the main body frame and a jack assembly arranged between the pressing plate assembly and the main body frame. According to the special-shaped steel plate pressing device, the jack is used for pressing plate construction, power connection is not needed, machining can be carried out only through a small amount of manpower, the problem of plate waste in the pressing process of special-shaped steel plates is solved, the site machine renting cost is reduced, the labor cost is saved, and the application range is wider.

The lifting device comprises at least one continuous anode, the periphery of the continuous anode is sleeved with a clamping frame, a plurality of anode guide rods are arranged between the clamping frame and the continuous anode, and a pressing mechanism enabling the anode guide rods to make contact with the continuous anode is installed on the clamping frame. A lifting mechanism is arranged at the upper end of the clamping frame and comprises a first driver, a second driver and a lifter, a lifter connector connected with the second driver is arranged on the upper portion of an output shaft of the lifter, an anode bus is arranged on the outer side of the anode guide rod, and a soft belt connected with the anode bus and the anode guide rod closest to the anode bus is arranged between the anode bus and the anode guide rod. According to the invention, the synchronism of the continuous anodes is ensured, the accuracy of electrode distance and cell voltage control is improved, the thermal balance of the electrolytic cell is maintained, the energy consumption is reduced, the current efficiency is improved, and the technical problems in controlling the electrode distance and regulating and controlling the distance between an anode guide rod and an aluminum oxide crust are thoroughly solved.

The invention discloses a method and equipment for processing and producing second-class base oil by taking first-class base oil regenerated by waste lubricating oil as a raw material, and belongs to the technical field of regenerated lubricating oil. Atmospheric and vacuum distillation is combined with NMP solvent refining, and the waste lubricating oil is regenerated into qualified first-class base oil to serve as an exclusive raw material; preheating the raw material to 60-80 DEG C under the protection of nitrogen, and introducing the preheated raw material into an adsorption column at a flow rate of 0.5-2.0 BV / h, so that the raw material sequentially passes through a macroporous silica gel layer (the particle size is 0.1-1.5 mm) and an active white clay layer (the mass ratio of the macroporous silica gel layer to the active white clay layer is 2: 1) with specific parameters, and deep synergistic adsorption refining is carried out; after the refined oil enters a storage tank, vacuum is applied to suck residual oil in the column into the tank, and second-class base oil is obtained after heat preservation sedimentation and precise filtration. Under the mild non-hydrogenation condition, high added value upgrading of the waste lubricating oil is achieved, and the method has the comprehensive advantages of being efficient in process, high in product yield, stable in quality and low in energy consumption and cost.

This utility model discloses a powder-spreading device for metal-based dispersed solid self-lubricating material sheets, comprising: a base with an electromagnetic chuck mounted thereon; two guide rail structures mounted on the base, each with a ball bearing slider slidably mounted on its outer circumferential surface; and a fixing plate connected to the two ball bearing sliders. A scraper is provided between the fixing plate and the electromagnetic chuck, allowing for height adjustment. The scraper is connected to the fixing plate via an adjusting element. Adjusting the distance between the scraper and the sheet material allows for synchronous adjustment of the scraper by adjusting the height of the adjusting element. This utility model features a simple structure, combining the electromagnetic chuck for sheet material fixation with an adjustable scraper structure. This achieves stable sheet material fixation, precise powder layer thickness control, and simple and safe operation during powder spreading. It also effectively suppresses dust generation, improves powder spreading quality and production efficiency, and has good practicality and industrial application prospects.

This application relates to the field of natural product chemistry, specifically disclosing a method for extracting triptolide and its application. The extraction method for triptolide includes the following steps: S1, pretreatment: After washing and drying the roots of Tripterygium wilfordii, it is subjected to ultrafine pulverization and plasma treatment to obtain Tripterygium wilfordii powder; S2, enzymatic hydrolysis: After enzymatic hydrolysis of the Tripterygium wilfordii powder, the enzyme is inactivated, centrifuged, concentrated, and dried to obtain crude triptolide; S3, purification: The crude triptolide is purified by high-speed countercurrent chromatography and vacuum dried to obtain refined triptolide. The above extraction method is simple and safe to operate, and the purity and extraction rate of the obtained triptolide are improved. The obtained triptolide can be mixed with total glucosides of paeony, glycyrrhizic acid, papain, poloxamer, xanthan gum, and propylene glycol to prepare a drug for treating rheumatoid arthritis, which has significant efficacy, high safety, and broad clinical application prospects.

The application discloses a preparation method and application of a selenoester compound. The preparation method comprises the following steps: dissolving selenoic anhydride in an organic solvent, then adding halide, alcohol and an organic base in sequence, and obtaining the selenoester compound through reaction. The preparation method of the selenoester compound has the advantages of cheap and easily obtained raw materials, mild reaction conditions, simple operation, high chemical selectivity, one-pot synthesis, and the like, and overcomes the defects of complicated synthesis steps, poor functional group compatibility, serious environmental pollution and the like in the prior art.

The utility model belongs to gas -cooker technical field discloses a kind of commercial gas -cooker of external low-voltage power supply, this gas -cooker is converted into 24V direct current safety very low voltage by using the power adapter of external convertible voltage, realizes the safe work of gas -cooker;The gas -cooker includes cooktop main body, gas system (including gas valve, igniter etc.), safety control system and the 24V low-voltage wiring harness of connecting each component.The utility model removes the 220V high-voltage line and connecting point of traditional gas -cooker through cookware interior completely, fundamentally eliminates electric shock accident and high-voltage short-circuit fire risk caused by internal line aging, breakage, maintenance error touch.

The application provides a quantitative testing method for total organic carbon content of a micron-sized powder material, which comprises the following steps: providing the micron-sized powder material with a preset mass M; mixing the micron-sized powder material with distilled water to obtain a solid-liquid mixture; heating the solid-liquid mixture and the distilled water as a blank control group to a preset temperature, so that the first material is dissolved in the distilled water; filtering and concentrating the solid-liquid mixture to obtain a test solution; detecting the total organic carbon content of the test solution and the distilled water as a blank control group to obtain a first total organic carbon content N1 of the test solution and a second total organic carbon content N0 of the distilled water; and determining the total organic carbon content of the micron-sized powder material. The testing method is safe and simple in operation steps, and the raw materials and equipment used are easy to obtain. The interference of other substances in the micron-sized powder material is excluded, and the total organic carbon content in the micron-sized powder material can be quantitatively tested more clearly.

The utility model discloses a kind of polytetrafluoroethylene wire rod raw material mixing equipment, including body frame, the body frame is provided with feeding platform, transport passage is provided on the feeding platform, the transport passage top is provided with protective connector sleeve, bottom is provided with connection cloth bag, the transport passage peripheral side is provided with jacking mounting plate, the jacking mounting plate is provided with the jacking shaft body compatible with the transport passage;Feeding tank is provided on the feeding platform with the protective connector sleeve connection compatible, the body frame bottom is provided with the mixing tank with the connection cloth bag link compatible, the mixing tank bottom is provided with auxiliary cart.The utility model solves the problems such as poor sealing, inaccurate positioning, inconvenient operation, insufficient safety protection and uneven mixing of the existing polytetrafluoroethylene wire rod raw material mixing equipment.

The invention discloses a novel complexing iron desulfurization device tower dredging tool which comprises a sealing mechanism, and a flange plate is arranged at one end of the sealing mechanism and used for being connected with a flange at the bottom of a tower; the middle of the sealing mechanism is connected with a moving rod, the moving rod can move up and down in the axis direction of the sealing mechanism, and a quadrangular drill bit is arranged at the end, inserted into the tower, of the moving rod and used for breaking hard blockages. A locking sleeve connector is arranged on the moving rod and connected with the bottom end of the sealing mechanism in a sealed mode. The device is simple in structure and convenient to install, tower unblocking operation can be completed without stopping the device, tower unblocking is achieved through the tool, other external force is not needed, operation is simple and efficient, the tool is easy and convenient to install and safe to use and operate, environmental protection risks and agent waste caused by the fact that agents and sulfur paste fall on the ground after unblocking are reduced, and the device is worthy of popularization and application. And the method has a wide application prospect and an extremely high popularization value.

The invention relates to a device control unit (2), comprising: at least one control device (5) for at least one automation component (3, 4) of a device (1); and at least one mobile terminal (7) for communicating with the at least one control device (5). The invention further relates to a corresponding device control method and to a device (1) having at least one automation component (3, 4) and such a device controller (2).

This utility model relates to the technical field of aquaculture, specifically to a fish hiding device for rice-fish farming. It includes a horizontally arranged mounting plate with multiple sets of guide grooves evenly spaced on its top surface. Limiting components are movably installed within these guide grooves. Lifting lugs are located on the top surface of the mounting plate, distributed among the guide grooves. Counterweight components are located at both ends of the mounting plate, each including a mounting base fixedly connected to the bottom of the mounting plate. The position of the limiting components is adjustable through the sliding cooperation between the guide grooves on the top of the mounting plate and the inverted "L"-shaped guide frame. This allows users to flexibly adjust the spacing between bamboo tubes according to their actual size, providing strong versatility and adaptability to bamboo tubes of different diameters, ensuring the device's adaptability to various aquaculture needs. An arc-shaped, raised stainless steel limiting plate is used, with a similarly arc-shaped EPDM rubber layer fixed to its top surface, together forming a bamboo tube clamping mechanism.

The application discloses an integrated mobile paint spraying shed, which comprises a paint spraying shed capable of walking along a given track, and a blowing device and a purification device communicated with the paint spraying shed. The blowing device comprises an air inlet assembly for introducing gas and an air outlet assembly for discharging gas. The air outlet assembly comprises an air outlet main channel arranged at a fixed position and an air outlet auxiliary channel arranged on the paint spraying shed, a plurality of air outlets II are arranged on the air outlet main channel, and an air outlet I is arranged on the air outlet auxiliary channel. The air outlet I can be driven to be engaged with any air outlet II, so that the paint spraying shed is communicated with the purification device through the air outlet auxiliary channel and the air outlet main channel, and waste gas collection and purification are realized. The paint spraying shed can effectively reduce pollution in the spraying process and meet the spraying operation requirements of special structural members such as large-section steel structures or long rod members.

The utility model relates to the field of granary insect prevention, in particular to a novel push-pull type insect prevention line. The insect-proof device comprises a containing box with an opening in the upper portion and an insect-proof cover arranged at the top end of the containing box in a covering mode. The insect prevention assembly comprises a square frame buckled in the containing box, a plurality of guiding sliding rods transversely, parallelly and fixedly arranged in the square frame at intervals, a shielding plate movably connected to the guiding sliding rods in a sleeving mode in the length direction of the guiding sliding rods, an upper panel and a lower panel, wherein the upper panel and the lower panel are integrally buckled to the upper end and the lower end of the square frame. And a plurality of insect-proof wire grooves which are arranged in parallel at intervals along the length direction of the square frame and are used for preventing inert powder from scattering outwards and preventing winged insects from entering during ventilation operation are formed in corresponding positions of the upper panel and the lower panel in a penetrating manner. The utility model aims to provide the novel push-pull type insect-proof line which can quickly open or close the insect-proof cover, effectively avoid the loss of pesticide and improve the insect-proof effect.