158results about How to "Avoid Leakage" patented technology

This utility model discloses a raw material storage tank that facilitates pipeline integration, relating to the field of pipeline integration technology. It includes an installation plate; a tank body is fixedly installed on the installation plate; a side frame is fixedly installed on the side wall of the tank body; the side frame is fixedly installed to a support frame at the bottom of the installation plate; an installation pipe is fixedly installed on the side wall of the tank body via an installation seat; one end of the installation pipe is fixedly installed to an integrated pipe; a first material pipe and a second material pipe are integrally formed on the integrated pipe; a detachable connector is fitted to one end of the integrated pipe; the detachable connector includes an installation shell; one end of the installation shell is fixedly installed to the integrated pipe via bolts; in use, the installation pipe is fixedly installed to the material inlet on the side wall of the tank body, and one end of the installation pipe, the first material pipe, and the second material pipe are all connected to the integrated pipe, thus effectively realizing the transfer of materials through the first and second material pipes.

This utility model relates to a spray gun capable of multi-stage atomization, belonging to the technical field of multi-stage atomization spray guns. The multi-stage atomization spray gun includes: a spray pipe with a nozzle threadedly connected to its inner wall; and an anti-backflow mechanism, comprising two sealing gaskets slidably connected to the inner wall of the nozzle, and two mounting blocks fixedly connected to the inner wall of the nozzle, with the surface of the sealing gaskets slidably connected to the inner wall of the mounting blocks. Through the cooperation of springs, sealing gaskets, and mounting blocks, unidirectional limiting of the air holes within the nozzle is achieved, thereby preventing the solution inside the nozzle cavity from flowing into the air holes, ensuring the air intake of the nozzle cavity, and thus guaranteeing the atomization effect. The cooperation of a first sealing ring and a second sealing ring seals the connection between the nozzle and the spray pipe, preventing leakage at the connection and improving the atomization effect of the spray gun.

This disclosure provides a data processing method, system, electronic device, and medium for model inference scenarios. The data processing method includes: writing target data to be transmitted in the model inference scenario into at least one write area in a preset buffer using a data stream; obtaining different sensitive data and sensitive data pointer information in the write area based on sensitive data identifier information in the data stream, and generating structure information to obtain an initial sensitive data linked list; encrypting different sensitive data in the write area using a first preset data processing algorithm and the initial sensitive data linked list to generate a target sensitive data linked list, and transmitting it to the device in the model inference scenario. This disclosure can ensure the security and integrity of sensitive data transmission from the host to the device, effectively avoid the leakage of sensitive information, and ensure the security and reliability of the entire data transmission process.

The utility model discloses a kind of for instrument and apparatus based on magnetic coupling axial motion mechanism, it includes device ontology, it includes first surface and second surface;Knob device, it includes first magnetic force coupler and elastic positioning assembly of assembly setting in first surface;Turntable device, it includes second magnetic force coupler and turntable assembly of assembly setting in second surface;Wherein, first magnetic force coupler and second magnetic force coupler coaxial arrangement and form magnetic coupling, elastic positioning assembly is driven turntable assembly synchronous rotation by magnetic coupling effect, to realize knob device and turntable device non-contact transmission connection;Also disclose a kind of instrument and apparatus.The utility model uses magnetic coupling axial or radial non-contact transmission connection mode, realizes the power transmission between knob device and turntable device, avoids the wear problem of traditional mechanical connection, prolongs service life, and realizes accurate rotation positioning every gear, meets the application scene of higher requirement to rotation accuracy.

The utility model relates to the technical field of rotating slip rings, in particular to a multi-channel gas-electric-hydraulic rotating slip ring which comprises a sliding seat and a sliding sleeve which are connected in a sleeved mode, three channels corresponding to each other are formed in the sliding seat and the sliding sleeve, and sealing assemblies are installed at the positions, corresponding to the two sides of each channel, in the sliding seat and the sliding sleeve. A plurality of micropores are formed in the middle positions, corresponding to the sealing assemblies, of the sliding sleeve at equal intervals. According to the utility model, as the micropores communicated to the outside of the sliding sleeve are formed in the positions of the sealing elements, when leakage is caused by failure of the sealing elements, leaked gas and liquid can simultaneously enter the micropores when penetrating through the sealing elements, and further, the leaked gas and liquid can be effectively observed outside the sliding sleeve, so that whether leakage occurs or not can be quickly and simply judged.

This utility model provides a stainless steel air conditioning pipe, relating to the field of air conditioning pipe technology, comprising: a straight air conditioning refrigerant pipe, wherein an air conditioning refrigerant elbow is connected to the side end of the straight air conditioning refrigerant pipe via a pipe fitting; a stainless steel outer pipe layer is provided on the outer side of the straight air conditioning refrigerant pipe, and a copper inner pipe layer is laminated on the inner side of the stainless steel outer pipe layer; the surface of the copper inner pipe layer is coated with a nano-modified coating and a PTFE inner lining layer; the pipe fitting is welded to the copper inner pipe layer via a connecting inner pipe; and a pipe clamp is fixed to the outer end of the pipe fitting. This utility model solves the problem in the prior art where the copper pipe and stainless steel pipe are welded together as a single piece, resulting in inconvenience during the transportation and installation of stainless steel air conditioning pipes.

The utility model belongs to the technical field of oil tank sealing, and disclose a rubber sealing element for oil tank, including sealing assembly, sealing assembly fixed mounting is in the oil tank mouth outer surface, sealing assembly movable sleeve is equipped in the outside of oil tank cover connecting shaft, the outside fixed connection of sealing assembly has cleaning assembly, the side fixed connection of sealing assembly has the support ring of being located in the bottom of cleaning assembly, sealing assembly is by the compression ring, first connecting ring and sealing ring, the compression ring, sealing ring, first connecting ring and support ring are connected in head and tail, form the closed space. The utility model is because the setting of sealing ring, under the cooperation of compression ring, first connecting ring and support ring, can form sealed cavity, and because the hardness of support ring is greater than sealing ring makes the compression sealing ring to expand inwards and the shaft between oil tank cover and lower end thread connection is closely attached, avoids the situation that oil body is exuded from the thread connection gap during the shaking of rapid operation.

The utility model discloses a kind of atomization disinfection systems for greenhouse, including the side disinfection module and top sterilizer of installation in the cavity of external disinfection cabinet, the number of side disinfection module and top sterilizer is two, two side disinfection module and top sterilizer are located at the left and right sides of external disinfection cabinet cavity respectively, the inner cavity rotationally connected with ball bearing in the round hole of top sterilizer above side disinfection module, the utility model cooperates with the use of side disinfection module and top sterilizer, left and right spray mode is used, so that staff's clothes are disinfected as comprehensively as possible, while connecting pipe can be convenient for replacing spray head, to avoid spray head blockage, cause spray effect reduces the situation, staff can be disinfected as comprehensively as possible before entering greenhouse, to reduce the purpose of the infection risk of exogenous disease and insect pests brought by human to a greater extent.

This utility model discloses a fiberglass electrical box, relating to the field of electrical box technology. It includes a box body and a connection port inside the box body. An outer door is rotatably mounted on the front end of the box body, and reinforcing ribs are provided inside the box body. An installation component is fixedly mounted on the lower end of the box body, and a positioning screw is provided inside the outer door. An adjustment structure for controlling the state of the wires is provided inside the box body. This fiberglass electrical box can limit and restrain the wires inside, preventing tangling and ensuring ease of use. The double-door structure at the front end of the box body improves security. Using fiberglass as the main material ensures the box body's insulation and corrosion resistance, while also maintaining its lightweight nature, ensuring the stability of the electrical equipment inside the box, and improving the safety of its use.

This utility model discloses a wet wipe liquid spraying device for wet wipe production, belonging to the field of spraying devices. It includes a conveyor with a rotatable conveyor belt at its output end, and a guide groove on the outer wall of the conveyor belt; a protective cover and a squeezing assembly. The protective cover covers the conveyor, and the squeezing assembly includes a rotatable squeezing roller for squeezing liquid from the wet wipes on the conveyor belt; and a spraying assembly with its liquid collecting end located below the conveyor belt and its liquid outlet end extending into the interior of the protective cover. By using the squeezing assembly and the rotation of the squeezing roller, the wet wipes conveyed on the conveyor belt surface are subjected to auxiliary squeezing, thereby removing excess liquid from the wet wipes and preventing leakage during subsequent packaging due to excessive liquid content, thus ensuring the uniformity of liquid content within the wet wipes.

Embodiments of the present application provide an over-authorization checking method, which comprises: in response to a service access request of a user, obtaining identity information of the user and a request parameter of the service access request; determining a target service interface corresponding to the service access request based on the request parameter, and an over-authorization annotation associated with the target service interface; determining an over-authorization checking logic for the service access request from a pre-configured aspect layer based on the over-authorization annotation, and performing over-authorization checking on the service access request through the over-authorization checking logic. The technical solution of the embodiments of the present application can improve the convenience of checking over-authorization operations, and improve the generality of over-authorization checking logic code.

The utility model discloses a two-way pneumatic valve with a ring groove valve core, which relates to the technical field of two-way pneumatic valves and comprises a valve seat, fixing pipes are arranged at two ends of the valve seat, a servo motor is mounted on the left side of the valve seat, and an output end of the servo motor extends into the valve seat and is provided with a valve rod. A connecting plate is installed on the right side of the valve rod, a valve element is installed on the right side of the connecting plate, a first flange is installed on the right side of the fixing pipe, and a sealing mechanism for reducing fluid leakage is arranged on the right side of the first flange. According to the two-way pneumatic valve with the annular groove valve element, the sealing strip is placed on one side between the first flange and the second flange, and then the sealing strip is extruded by a bolt when the first flange and the second flange are connected, so that a gap between the first flange and the second flange is filled; and therefore, the gap between the first flange and the second flange is reduced, and the situation of fluid leakage is avoided.

The utility model discloses a kind of chlorantraniliprole processing reaction kettle feed pipe, comprising: reaction kettle, the upper surface rear end of the reaction kettle is inserted with feed pipe, the upper end of the feed pipe is equipped with first pipeline butt joint, the top of the first pipeline butt joint is fixedly connected with conical tube, the upper end of the conical tube is equidistantly equipped with four groups of feed pipe, by sealing ring, it is convenient to carry out secondary sealing protection to second pipeline butt joint, potential leakage is controlled in a limited range, to greatly improve security, by locking mechanism, it is convenient to lock the sealing ring after splicing, ensure the effectiveness of sealing ring sealing protection, by fastening mechanism, a certain pressure is applied to second pipeline butt joint, and then second pipeline butt joint can be better sealed for pipeline connection place, prevent the situation of leakage from occurring at pipeline connection place, and then the security of agricultural production can be improved.

This utility model discloses a device for recovering heat from exhaust gas, relating to the field of exhaust gas recovery technology. It includes a heat recovery box, a fan installed on one side of the heat recovery box, a pretreatment mechanism installed at one end of the fan, and a heat recovery mechanism installed inside the heat recovery box. In this utility model, the fan operates to send exhaust gas into the heat recovery box from the feed pipe. Spiral heat exchange plates guide the incoming exhaust gas in a spiral motion, causing it to move upwards along the direction of the spiral heat exchange plates. A heat exchange medium is sent into the heat exchange tube through a second connecting pipe. The heat exchange medium flows inside the heat exchange tube and exchanges heat with the exhaust gas flowing outside. By extending the flow path between the exhaust gas and the heat exchange medium, the contact time is increased, allowing the coolant to better absorb heat from the exhaust gas, bringing the heat exchange closer to equilibrium and improving the efficiency of heat recovery from the exhaust gas.

This application relates to the field of three-way valves, disclosing a novel three-way valve with a valve core structure, including a valve body, a valve core, an arc-shaped retaining plate, and a wrench lever. The valve core is rotatably disposed inside the valve body. Both the valve body and the valve core have a cylindrical structure. Three connecting pipes for connecting pipelines are provided on the side of the valve body. The valve core has corresponding connecting pipes with mating holes. A control post is provided on the top of the valve core, and the control post extends sealingly to the outside of the valve body and is connected to the wrench lever. An arc-shaped mounting groove is provided on one side of the valve core, and a sealing frame is placed in the mounting groove. A fitting groove is opened on the outside of the sealing frame, and an arc-shaped retaining plate is attached in the fitting groove. The size of the arc-shaped retaining plate is adapted to the size of the port of the valve body connected to the connecting pipe. This application solves the problem of complex valve core manufacturing process and avoids the risk of internal leakage due to sealing issues.

This utility model provides a graded sewage treatment device, belonging to the field of sewage treatment technology. The graded sewage treatment device includes a sewage treatment machine and a treatment protection mechanism. The sewage treatment machine has a treatment tank inside. A connector is installed on the top left side of the sewage treatment machine. A protective frame is movably connected to both sides of the connector. A protective pad is fixedly connected to the inner side of the protective frame. A protective cover is movably connected to the top of the protective frame, and a protective plate is movably connected inside the protective cover. By setting up the treatment protection mechanism, a clamping and protective medium can be formed between the connector and the external sewage pipeline, allowing the user to protect the connection between the connector and the external sewage pipeline. This prevents the connector from being affected by external rainwater and other contaminants during operation, avoiding corrosion and rust that could lead to sewage leakage. Therefore, the protective performance and stability of the sewage treatment connection between the sewage treatment machine and the connector are improved.

The application discloses a kind of auxiliary devices for semen collection, it is related to the technical field of male medical examination, including disposable collection cylinder, the rear side of disposable collection cylinder is provided with triangular plate, the left and right sides of triangular plate are provided with adjustable auxiliary mechanism, the top of disposable collection cylinder is provided with sound blocking mechanism, the rear side of triangular plate is symmetrically provided with opening sleeve plate left and right, disposable collection cylinder can quickly restore to vertical state in clamped state after semen collection is completed, on the one hand, compared with the current artificial hand-held disposable collection cylinder semen collection mode, the structure used in the present scheme can release the hands of patient during semen collection, to facilitate better semen collection, on the other hand, after semen collection is completed, disposable collection cylinder can be quickly restored to vertical state, so that the semen in disposable collection cylinder can be prevented from leaking to the maximum extent.

The utility model relates to the technical field of bait processing and storing, and discloses a bait processing and storing device which comprises a smashing device and a material storing device, a conveying assembly is arranged between the smashing device and the material storing device, the smashing device comprises an installation frame, a smashing barrel, a smashing assembly and a screening assembly, the smashing barrel is arranged at the upper end of the installation frame and provided with a filter screen, and the screening assembly is arranged on the installation frame. The screening assembly comprises a rotating shaft, a power part and a plurality of mounting frames, the rotating shaft is arranged in the crushing barrel, the power part is arranged on the outer wall of the crushing barrel, the mounting frames are uniformly arranged on the outer wall of the rotating shaft, each mounting frame is provided with a plurality of screening steel sheets, the gap between every two screening steel sheets is equal to the maximum aperture of the filter screen, and each screening steel sheet is provided with a semicircular groove; a brush is arranged at one end of the mounting frame; bait particles which do not reach the standard are screened out through the screening steel sheet and are thrown to the smashing area again under the action of centrifugal force to be smashed, the closed-loop process of smashing, screening and re-smashing is formed, the smashing uniformity is remarkably improved, and the smashing effect of bait is improved.

The utility model discloses a regulating valve convenient to install, which comprises a valve main body, two shells are symmetrically arranged at the end part of the valve main body, a flange part is arranged on one side of each of the two shells, and flange holes are uniformly formed in the flange parts; fixing blocks are installed at the two ends of the valve body, teeth and tooth grooves are connected in a meshed mode firstly, then a shell is fixed through fixing bolts, and when the bolts are loosened, the situation that a flange plate rotates at will due to loosening of the bolts can be avoided through meshing of the teeth and the tooth grooves. The pipeline of the valve body is integrally formed, and the flange plate is rotationally adjusted on the outer side of the pipeline, so that the situation that leakage occurs at the adjusting position of the flange plate due to long-time use is avoided. The shell of the device is designed in a split mode, when flange plates with different numbers of flange holes need to be replaced, the flange plates can be replaced more conveniently and rapidly, the situation that the whole valve body is replaced is avoided, and cost is reduced.

The utility model discloses a kind of for office building roof anti-seepage pipeline structure, belong to pipeline field, including first pipeline, one end of the first pipeline is provided with second pipeline, the outer wall of the first pipeline is fixedly connected with first mounting plate, the outer wall of the second pipeline is fixedly connected with second mounting plate, the inside of the first mounting plate is equipped with mounting groove, the side of second mounting plate close to first mounting plate is fixedly connected with plugboard, and the second mounting plate is inserted with first mounting plate by plugboard and mounting groove.The for office building roof anti-seepage pipeline structure, by setting mounting groove, plugboard, limit hole, limiting plate, connecting plate, spring, first sealing ring and second sealing ring, so that the pipeline structure when using, two pipelines can be quickly butt joint installation, improve the efficiency of pipeline installation, and need not use bolt fixed, can avoid the corrosion loosening situation of installation structure in the process of long time use.

The application discloses a fruit juice machine with a filtering partition. By setting a partition in the fruit juice machine, the partition can automatically filter residues after whipping. After rotating off the lower cup, the filtered fruit juice remains in the upper cup, realizing efficient separation of fruit juice and residues. This design not only improves the taste of fruit juice, but also avoids the cumbersome operation of additional filtering required by traditional fruit juice machines. In addition, the split detachable structure (lower cup, partition and upper cup) allows users to flexibly assemble according to needs: install the partition to perform automatic filtering, or remove the partition to directly perform ordinary whipping (such as making milkshake), significantly expanding the application scenarios of the equipment. During the whipping process, the food material is rotated upward by the knife group, but cannot pass through the partition filter hole due to size limitations, and the particles rebound to the knife group area for continuous crushing, which shortens the whipping time, improves the crushing efficiency, and ensures that the food material is fully broken.

This utility model discloses a leak-free filter cartridge filter, relating to the technical field of filter cartridge filters. It includes a housing and a fastening assembly. A filter cartridge body is disposed inside the housing, and an mounting ring is installed on the outer side of the top of the filter cartridge body. A fixing plate is installed on the inner wall of the housing. The fastening assembly, used for pressure sealing to prevent leakage, is located on the upper end of the fixing plate. The fastening assembly includes a pressure plate, a sealing strip, a connecting frame, a mounting plate, and a mounting rod. A sealing strip is installed on the lower end of the pressure plate, and a connecting frame is connected to the upper end of the pressure plate. The mounting plate is connected to the upper end of the connecting frame, and a mounting rod is installed on the upper end of the mounting plate. This leak-free filter cartridge filter uses the fixing plate and pressure plate to clamp and fix the mounting ring from the outside. As the mounting plate is installed inside the housing, the pressure plate moves downward, applying pressure to the mounting ring and the fixing plate, increasing the sealing between them and preventing leakage due to aging.

The application provides a gas conveying pipeline fine water mist explosion-proof device, which comprises a long pipe, a plurality of atomizing nozzles, a communicating cavity arranged in the long pipe, a water pipe communicated with one end of the communicating cavity, and a drainage cleaning mechanism arranged on the arc surface of the long pipe. The drainage cleaning mechanism comprises a leakage hole, a cylinder and a fan blade assembly. The leakage hole is arranged on the arc surface of the long pipe, the cylinder is inserted into the leakage hole, and the fan blade assembly is arranged in the cylinder. The arc surface of the long pipe is provided with a square hole. The gas in the pipeline is sprayed by the atomizing nozzles, so that the concentration of the gas is reduced, and the gas explosion is prevented to a certain extent. The water in the pipeline is discharged through the cylinder and the leakage hole, so that the rusting of the pipeline caused by excessive water in the pipeline is avoided.

The utility model discloses a condenser for medical intermediate production, including installation backplate, condenser shell, condenser shell rear side is fixedly connected with installation backplate, the left side top of condenser shell is equipped with the input pipe, and the left side lower portion is equipped with the output pipe, the front side of condenser shell is connected with the front baffle cover, the front side swing of front baffle cover is embedded with the ventilating shell, can make the temperature of condenser keep stable, make the whole condenser not depend on ambient temperature, can manual change ambient temperature, can make cooling medium add design structure more reasonable, prevent the condition of cooling medium leakage, can split the condenser shell, ventilating shell and front baffle cover split quickly, thereby can make first radiating fin and second radiating fin separate from front to back, can expose most of the area of the serpentine infusion tube in the environment, can effectively avoid that the particulate matter or high viscosity gas will block the narrow fin gap, can carry out fine cleaning, make descaling cleaning more sufficient, convenient.

The utility model relates to foundry tool technical field provides a kind of anti-leakage tank tool for casting, including upper die holder, the bottom end of upper die holder is installed with lower die holder, the inside of lower die holder is provided with mould cavity, the top of upper die holder is fixed with liquid inlet pipe, the outside of upper die holder internal mould cavity is provided with cooling cavity, one end of upper die holder and lower die holder is provided with sealing structure, the outside of upper die holder and lower die holder is fixed with connecting structure.The utility model is provided with connecting structure, by motor drive gear rotation, then by toothed belt drive screw sleeve rotation, to realize screw rod drive first connecting plate movement, make upper die holder and lower die holder automatic connection or separate, improve the speed of mould assembly and disassembly, and by the fastening effect of threaded connection, it can ensure that the sealing effect of each part of tool is consistent, avoid the situation that liquid leakage occurs due to local insufficient fastening, further improve the sealing and reliability of tool.

This utility model provides an atomizer and atomizing device, relating to the field of electronic atomization technology. The atomizer includes a first housing and a second housing. A movable component and the first housing define a liquid reservoir and are in fluid communication. The end of the movable component away from the liquid reservoir is movably connected to a fixing member. The end of a connecting member away from the atomizing component is used to insert the fixing member and abut against the movable component. The atomizing component is in fluid communication with the liquid reservoir through the connecting member. The atomizer and atomizing device provided by this application can quickly lubricate the atomizing component, reducing the long lubrication time during installation and use, and preventing leakage from the liquid reservoir when disassembling the second housing.

The embodiment of the application provides a fixing device of a pressure sensor arranged on a flexible pipeline, which comprises a shell and a fixing part, the fixing part is used for fixing a sensor body, the fixing part is provided with a first cavity for accommodating the sensor body, the sensor body is arranged in the first cavity, a protrusion is arranged on the periphery of the first cavity, a second cavity corresponding to the position of the protrusion is arranged in the shell, the protrusion extends into the second cavity and does not contact the inner wall of the second cavity; the embodiment of the application adopts the double fixing of the external shell and the fixing part on the pressure sensor, the shell and the fixing part do not contact each other, when the flexible pipeline deforms or relative displacement occurs between the flexible pipeline and the fixing device, the connection part of the pressure sensor and the flexible pipeline can maintain good sealing, and the medical risk caused by the leakage of the connection part of the pressure sensor and the flexible pipeline is greatly reduced.

The utility model relates to the technical field of aluminum cathode carbon block groove milling, in particular to an aluminum cathode carbon block groove milling device which comprises a groove milling machine. The deviation preventing mechanism comprises electric push rods fixedly connected to the two sides of the inner wall of the slot milling machine, the telescopic ends of the electric push rods are fixedly connected with a push plate, and one side of the push plate is fixedly connected with two air storage cylinders; according to the device, flexible constant-pressure clamping of the aluminum cathode carbon block is achieved through an electric push rod, an air storage cylinder, a first spring, an exhaust pipe and a rubber plate, timely closing of the electric push rod is achieved through the rubber plate and a pressure sensor, and then it is guaranteed that the rubber plate abuts against the side face of the aluminum cathode carbon block in a constant-pressure mode; compared with an existing cathode carbon block which is prone to deviation in the milling process, the cathode carbon block is stably clamped, excessive clamping of the cathode carbon block for aluminum is avoided, and the milling effect of the cathode carbon block for aluminum is guaranteed.

The utility model discloses an ore feeding adjusting device of a mining crusher, which relates to the technical field of crushers and comprises a crushing box, a slope is arranged at the top of the crushing box, two slide rails are arranged at the top of the slope, a screening box is arranged at the top of the slope, and pulleys are arranged at four corners of the bottom of the screening box. The screening box can be pushed and pulled back and forth on a slope by starting the telescopic air cylinder, ore fragments stored in the screening box are shaken and screened, and some ore fragments smaller than a notch of the discharging groove are tossed out of the discharging groove to the screening plate. Damage to a screening plate when ores fall can be reduced through a mounting block, a fixing shell and an elastic piece, tooth blocks are arranged on the two sides of the inner wall of the crushing box correspondingly, the situation that ore fragments leak from the two sides of two crushing paddles can be avoided, it is ensured that all the ores are crushed, and therefore the ores are firstly screened and then crushed, and the crushing efficiency is improved. And the risk of blocking the crushing cavity due to the fact that large ores directly enter the crusher is avoided.

The utility model discloses a switching power supply with an insulation structure, which comprises a switching power supply, a switch driving lever is mounted on the surface of the front end of the switching power supply, an insulation rubber gasket frame is arranged on the outer side of the switch driving lever, a knob is movably mounted on one side of the switch driving lever, one side of the surface of the knob is connected with a ram, and the ram is connected with the switch driving lever. A ceramic round core is mounted in the knob, and the surface of the ceramic round core is integrally connected with a ceramic rod; the knob is arranged on one side of the switch driving lever, the surface of the knob is connected with the ram, and the ram can lift the switch driving lever upwards through rotation of the knob, so that a switching power supply is turned on, hands of an operator are prevented from being in direct contact with the power supply switch, the situation of electric leakage is prevented, and the isolation and insulation effects are achieved; the ceramic round core is arranged in the knob, the ceramic round core is connected with the ceramic rod, the ceramic rod is connected with the ram, insulation is achieved through ceramics, and therefore the insulation effect of the knob is improved.