203results about How to "Simple and efficient operation" patented technology

The utility model belongs to the technical field of spraying disinfection of sterilization cabinets, and particularly relates to a sterilization cabinet with a spraying function, which comprises a spraying component, a protective shell component is mounted at the bottom of the spraying component, and an adjustable support plate component is mounted in the protective shell component; the spraying assembly comprises a pesticide storage tank, a motor is fixedly connected to the top of the pesticide storage tank, a connecting rod is fixedly connected to the top of the motor, a stirring rod is fixedly connected to the outer wall of the connecting rod, a connecting pipe is fixedly connected to the side of the pesticide storage tank, and a water pump is fixedly connected to the end of the connecting pipe. The side of the water pump is fixedly connected with a liquid outlet pipe, one side of the liquid outlet pipe is fixedly connected with a fixing clamp, and the other side of the liquid outlet pipe is in threaded connection with a spray head. Threaded connection has good sealing performance, liquid medicine can be prevented from leaking in the conveying process, the stability of liquid medicine spraying pressure is guaranteed, and then the spraying range and strength can be effectively controlled.

The utility model discloses a vegetable processing and cleaning device which comprises a water tank and a lifting net frame, a hoisting plate is arranged above the water tank, a first bolt is arranged on the hoisting plate, a fixing frame is arranged below the hoisting plate through a lifting mechanism, a reciprocating lead screw is rotationally arranged in the fixing frame, and the reciprocating lead screw is connected with the lifting net frame. A driving motor connected with the reciprocating lead screw is arranged on the fixed frame, the reciprocating lead screw is sleeved with a lifting frame through a limiting mechanism in a threaded mode, the lifting frame is connected with a lifting screen frame through a connecting mechanism, a fixed rod is fixedly arranged on the lifting screen frame, and the fixed rod is connected with the reciprocating lead screw through a rotating mechanism. The reciprocating lead screw is driven by the driving motor to rotate, the lifting screen frame can move up and down and rotate in the water tank in a combined mode, vegetables make contact with water flow in a multi-angle and multi-direction mode, cleaning blind areas are broken, mechanical friction is enhanced, stubborn stains such as soil and pesticide residues on the surfaces of the vegetables are effectively removed, and cleaning is more thorough.

The application discloses a filling and paving device for preventing settlement of a factory building foundation, and relates to the field of foundation paving. The device solves the problem that the existing filling and paving device has a large roller size and is difficult to detect and fill local settlement. The device comprises a vehicle body, a storage box, a filling mechanism and a compaction mechanism. The filling mechanism comprises a compaction roller, a conveying screw and a control member. The bottom of the storage box is fixedly connected with a plurality of output grooves. The device controls the ground settlement state of the compaction roller in the rolling sensing area on the ground through the filling mechanism, and controls the output state of the filling material and the rotating speed of the conveying screw in parallel, so that the output rate of the filling material is faster at the position with a larger ground settlement amplitude. The control member controls the lifting of the compaction roller to control the compaction strength. The ground before detection and the ground after filling are compacted respectively through the compaction mechanism, the ground is kept flat, and the strength of the ground after filling is improved.

The utility model relates to pharmaceutical equipment technical field especially relates to a kind of powder accumulation prevention wall cleaning device of spray drying tower.It is a kind of powder accumulation prevention wall cleaning device of spray drying tower, including main part, limiting screw rod, locking knob, sliding sleeve, first pivot, folding rod, brush and hinged rod, main part bottom fixed connection has limiting screw rod, limiting screw rod is threadedly connected with locking knob, locking knob bottom periphery fixed connection sliding sleeve, limiting screw rod lower end rotationally connects first pivot, first pivot periphery is cross-distributed rotationally connected with folding rod, folding rod outer end is all fixedly connected with brush, and each folding rod outer side top and sliding sleeve lower periphery between rotationally connected with hinged rod.The utility model is moved up and down along limiting screw rod by rotating locking knob and driving sliding sleeve, realizes the unfolding and folding of folding rod, improves the operation convenience and maintenance efficiency of equipment, reaches the effect that it is easy to operate and efficiently to complete drying tower inner wall cleaning.

The utility model relates to the technical field of positioning and clamping equipment, and discloses an engineering machinery shell processing, positioning and clamping device which comprises a base upper frame body connecting support seat, a disc-shaped clamping seat arranged at the left end of the base upper frame body connecting support seat, a transverse driving rod arranged at the circle center and driven by a first telescopic oil cylinder to horizontally move, and a plurality of gear seats annularly and uniformly distributed on the outer side of the driving rod, the gear seat is connected with the driving rod through a rack, a gear on the gear seat is in meshed transmission with the rack, and the gear drives the swing rod to rotate. The device drives the driving rod through the first telescopic oil cylinder, the swing rod is turned from tilting to vertical through gear transmission, the clamping plate is driven to expand outwards to clamp the shell, the oil cylinder is contracted to be disassembled, and operation is convenient and fast; the gear seat and the equidistant gear set support the driving rod to guarantee stable movement; clamping of the inner side faces of the clamping plates is not shielded, and the clamping position is convenient to adjust; the outer side protruding block and the right end baffle prevent the shell from sliding, the second telescopic oil cylinder adjusts the elevation angle of the clamping base, and the multi-angle clamping requirement is met.

The utility model discloses wood product heat treatment fumigation equipment, and relates to the technical field of wood product treatment. The wood product heat treatment fumigating equipment comprises a fumigating box and an exhaust pipe fixedly arranged on the top face of the fumigating box in a penetrating mode and extending into the fumigating box, and a fumigating mechanism and a control mechanism are arranged on the inner side of the fumigating box; the control mechanism is located on the outer wall of the fumigating mechanism; the fumigation mechanism comprises a placing part and a fumigation part; the placing part comprises a placing frame and a plurality of placing plates, and the fumigating part comprises an air inlet pipe and a turbine; the fumigation device has the technical effects that the steam inlet pipe in the fumigation mechanism introduces steam into the fixed frame and drives the turbine to rotate to enable the rotating box to rotate, the rotating box exhausts the steam through a plurality of steam outlet pipes, the steam spraying range is enlarged, the steam spraying effect is improved, and the steam spraying effect is improved. All parts of the wooden product are fully fumigated, the fumigating effect is improved, the wooden product quality is guaranteed, and the insect attack risk is reduced.

A communication engineering cable tray includes a cable tray, a hanging rod, a cable tray plate, a fastening plate, a locking rod, a lever, and a cover. The cable tray has connecting plates at both ends, and a screw passes through the connecting plates. The two ends of the screw are threadedly connected to fixing nuts. The upper part of the cable tray has a hanging tube, which is threadedly connected to the hanging rod. The upper end of the hanging rod has a mounting plate. The cable tray has an internal slide rail that adapts to the cable tray plate. The cable tray plate connects to the slide rail and slides within the slide rail. The cable tray is externally connected to a fastening plate, which has fastening rods on both sides. The cable tray has multiple external through holes on both sides, and the cable tray plate has internal through holes on both sides. The internal and external through holes adapt to the fastening rods, and the fastening rods pass through the external and internal through holes sequentially. The fastening rods are threadedly connected to fastening nuts.

This utility model discloses a novel integrated fishing box, relating to the field of fishing tackle technology. It includes a one-piece molded box body and a lid hinged to the top of the box body. The top surface of the box body has a recessed receiving cavity, and the two outer side walls of the box body have integrally molded protruding mounting portions. Each mounting portion has a handle, and an elastic buckle is provided between the handle and the mounting portion. The bottom of the box body has a mounting block, and the top surface of the mounting block has an internally hollow adjusting shell. A locking seat is fitted inside the mounting block, and the locking seat has a movable through groove in its center. A support member that can enter the adjusting shell or extend from the locking seat is provided within the movable through groove. The side of the locking seat facing away from the box body has a recessed locking groove communicating with the movable through groove. The locking groove contains a locking switch, a first pivot, and a first torsion spring. The locking switch has a locking portion at the bottom and an anti-detachment portion at the top. The side walls of the box body have openings. This utility model uses a one-piece molded box body, enhancing the durability and stability of the overall structure of the fishing box.

The automatic concrete fishing bucket comprises an inner cylinder and an outer cylinder which are coaxially arranged in a sleeving mode and can rotate relatively, and slurry inlets distributed in the circumferential direction at intervals are formed in the bottoms of the inner cylinder and the outer cylinder; a shaft hole is formed in the center of the bottom of the outer cylinder, a shaft penetrating through the shaft hole is arranged in the center of the bottom of the inner cylinder, a hoop abutting against the bottom of the outer cylinder is arranged on the shaft in a sleeving mode, the hoop is provided with a shifting rod, and the shifting rod is located between the two adjacent guide plates to shift the outer cylinder to rotate, so that the slurry inlets of the inner cylinder and the outer cylinder are opened and closed. The slurry inlets are overlapped or staggered through relative rotation of the inner cylinder and the outer cylinder, the guide plate guides concrete to smoothly enter the inner cylinder, and the efficiency is improved; the hoop prevents the outer cylinder from being axially disengaged; during forward rotation, the slurry inlets coincide to achieve continuous feeding, during reverse rotation, the slurry inlets are staggered and completely closed, concrete leakage in the lifting process is prevented, pile head concrete cleaning is achieved, and the construction efficiency is improved.

The invention discloses a cross-domain digital intelligence interpretation and creation method based on a double-series formula, and solves the technical problems that existing cross-domain interpretation is not supported by a unified rule and creation results are high in redundancy. The method comprises the following three steps: during quantization, selecting a CSCQF cross-domain consciousness mathematical quantization series formula, and standardizing and quantifying abstract cores such as consciousness, disease characteristics and cluster evolution logic to obtain a 3 * N-dimensional mathematical characteristic spectrum with a quantization error less than or equal to 5%; during deduction, the characteristic spectrum is substituted into the ultimate version of a too primary Omega spectrum isomorphic series formula v12, a cross-domain homologous too primary ground state rule is extracted through tensor product coupling and high-dimensional integration, and the rule adaptation degree is larger than or equal to 90%; and outputting an essential interpretation report or an original result during landing. Accurate quantification and regularization creation of cross-domain objects are achieved, effectiveness of achievements can be verified, and the method is suitable for multiple fields such as mathematical argumentation, clinical diagnosis and treatment, quantitative learning and AI artistic creation.

A top frame machine for balancing screen printing stencils is disclosed, relating to the technical field of screen printing equipment. A push plate is positioned on the upper side of a base plate and connected to the base plate via a push mechanism. A limiting plate is connected to a side plate via a drive mechanism. Several connecting springs are fixed to the lower surface of an abutment plate, embedded and fixed within cylindrical grooves on the push plate. Pressure sensors are fixed at the four corners of the upper surface of the abutment plate, and abutment rods are fixed at each of the four corners of the lower surface of the abutment plate. Abutment discs abut against the lower ends of the abutment rods, inserted into the four corners of the push plate, with the upper sides of the abutment discs inclined. The output shaft of an adjusting motor is fixedly connected to the center of the lower surface of the abutment discs, and the adjusting motor is connected to the pressure sensors via a controller. Through the linkage of the pressure sensors and the adjusting motor, the pressure at the four corners of the stencil is automatically balanced, ensuring uniform stencil tension, improving printing accuracy and stencil life, while reducing manual adjustments and making operation simple and efficient.

The invention relates to the technical field of the building industry, and discloses a fabricated steel structure and an installation method, the fabricated steel structure comprises frame columns and frame beams, and the frame columns and the frame beams are connected in a matched mode; the modular node units are detachably connected with the frame columns and the frame beams respectively; the modularized joint unit comprises a first connecting plate and a second connecting plate, the sides, deviating from each other, of the first connecting plate and the second connecting plate are suitable for being connected with one ends of the adjacent frame columns correspondingly, and a box type steel column section is arranged between the first connecting plate and the second connecting plate; the two ends of the box type steel column section are connected with the first connecting plate and the second connecting plate correspondingly. The modularized joint units are further provided with I-shaped steel beam ends, and the two I-shaped steel beam ends are connected with the two ends of the box type steel column section respectively in the extending direction of the frame beam.

The invention relates to the field of external scaffold connection, in particular to a wall connecting piece device for an overhanging external scaffold of a high-rise high-frame structure. Comprising a structural floor slab, three pieces of second I-shaped steel attached to the top of the structural floor slab, first I-shaped steel attached to the tops of the three pieces of second I-shaped steel, a plurality of #-shaped outer scaffolds fixed to one ends of the second I-shaped steel, and a plurality of inclined steel pipes arranged at one ends of the outer scaffolds. The first fastening piece acts on the first I-shaped steel and the second I-shaped steel, the second fastening piece acts on the outer scaffold and the steel pipe, a connecting seat is fixed to the bottom of the steel pipe, and the connecting seat is fixed to the first I-shaped steel through a bolt; the scaffold has the advantages that the anti-overturning capacity of the scaffold is improved, the safety performance of the scaffold body is enhanced, operation is convenient and efficient, the wall connecting pieces can be rapidly disassembled and assembled, and meanwhile the structure is high in universality, is of a universal butt joint structure, is made of conventional materials and can be recycled.

The utility model discloses an airplane wheel rotation driving device, which belongs to the technical field of rotation driving devices, and comprises a rotation driving equipment table and a friction wheel, the friction wheel is arranged on one side of the rotation driving equipment table, a turnover adjusting mechanism is arranged between the rotation driving equipment table and the friction wheel, and the turnover adjusting mechanism comprises a turnover angle adjusting frame, a rotating shaft and an adjusting assembly. The rotating shaft is rotationally connected to the interior of the belt rotating equipment table, and the overturning angle adjusting frames are fixed to the two ends of the rotating shaft; according to the utility model, through the arrangement of the overturning adjusting mechanism, the lifting toothed plate is driven by the lifting air cylinder to be in meshing transmission with the driven gear, so that the friction wheel is automatically overturned and moved out, reset and stored, the use state and the idle state are freely switched, the operation is simple, convenient and efficient, and the friction wheel can be completely stored in the accommodating groove of the belt rotating equipment table when being idle; the device is flush with the surface of the equipment table, so that the occupied space is greatly reduced, avoiding space is provided for airplane wheel falling, interference to airplane traction and other testing operations is avoided, and the smooth testing process is guaranteed.

The utility model relates to the field of skin manufacturing technology, concretely is a kind of unmanned plane skin manufacturing mould, including upper and lower superimposed assembly upper die and lower die, the recess corresponding with unmanned plane skin is established in the inside docking place of upper die and lower die, and upper die top is integrally provided with the injection port of intercommunication;The side support of edge support shaft is supported to the both sides of lower die, and side support is supported to the side edge of edge support shaft, and the base is supported to the bottom of side support, the cooling coil is assembled in the inside of upper die, and upper slide is provided in the side of upper die, the bottom support is supported to the bottom of lower die. The utility model is convenient to carry out combination assembly cooling and support auxiliary according to use needs, to improve the use operation efficiency.

This utility model relates to the field of bearing manufacturing technology, specifically a positioning and adjustment device for a robot control box. It includes a base plate, a robot control box mounted on the base plate, and a positioning and adjustment mechanism mounted on the base plate and acting on the robot control box. The positioning and adjustment mechanism includes an L-shaped support frame, a first sliding rod, and a positioning frame. The L-shaped support frame is located on one side of the base plate. The first sliding rod is mounted on the robot control box and slides in cooperation with the vertical side of the L-shaped support frame. The positioning frame slides vertically on the horizontal side of the L-shaped support frame. The bottom of the robot control box slides in cooperation with the base plate. Symmetrical positioning holes are provided on both the bottom of the robot control box and the base plate. Pushing the first sliding rod until the positioning hole on the robot control box aligns with the positioning hole on the base plate, the positioning rod re-inserts into the positioning hole under the action of a second spring. At this time, both the first and second springs extend, and the positioning rod positions the robot control box on the base plate.

The utility model relates to video monitoring technical field discloses an alarm state video monitoring device, including fixed box, the fixed box outer wall fixedly connected with fixed column, the fixed box inner wall top fixedly connected with the cylinder, the cylinder drive end fixedly connected with U type board, U type board lower fixedly connected with first lifting box, the fixed box inner wall right side fixedly connected with first rack, first rack has the first gear of engagement connection, the left end of first gear has the second rack of engagement connection, the second rack left end fixedly connected with second lifting box, second lifting box is connected with third lifting box through lifting assembly. In the utility model, through the linkage design of multiple lifting boxes, can realize the flexible lifting function of monitoring device, make overhauls or maintenance more convenient, through the cooperation between bevel gear and bevel gear, can realize the reciprocating rotation function of camera wide range, covers more broad visual field area.

This invention discloses a topical Chinese medicine preparation for treating erosive tinea pedis and its preparation method, belonging to the technical field of topical Chinese medicine preparations. The preparation consists of 15-25 parts clove, 10-20 parts alum, 20-30 parts Polygonum cuspidatum, and 10-18 parts Psoralea corylifolia, and is prepared into a spray using a 45% low-alcohol countercurrent extraction process. This invention achieves synergistic effects through a three-stage targeting mechanism: eugenol inhibits fungal CYP51A1 enzyme, blocking ergosterol synthesis (targeted enrichment rate 62.1%), resveratrol inhibits the NF-κB pathway, reducing inflammatory response, and psoralen activates the PI3K / AKT pathway, promoting epidermal repair (repair rate 69.2%). The alcohol concentration of the preparation is reduced to 45%, eliminating irritation to broken wounds. A single application takes only 1 minute, and a 7-day treatment course has a clinical efficacy rate of 84.7%, saving 320 yuan per person compared to traditional methods. This invention overcomes the shortcomings of existing drugs for treating erosive tinea pedis, such as strong irritation, cumbersome operation, and limited efficacy, and fills the gap in the category of specialized preparations, with significant social benefits and market prospects.

The invention relates to the technical field of automobile parts, and discloses an automobile part toughness detection device which comprises a workbench, a placement table and a placement plate, the placement table is vertically arranged above the workbench, a front placement block and a rear placement block are vertically arranged above the placement table, and the front placement block and the rear placement block are symmetrical to each other; a working cavity is vertically formed in the opposite side walls of the front containing block and the rear containing block, and the containing plate is located in the working cavity. Through cooperation of the workbench, the placement table, the front placement block and the rear placement block which are symmetrically arranged, the working cavity and the placement plate, positioning and placement of automobile plates can be rapidly completed, loading operation is simple, convenient and efficient, and the preparation efficiency in the early stage of a test is improved; the front pressing plate and the rear pressing plate which are symmetrically arranged can tightly press two ends of an automobile plate during toughness testing, so that the plate is prevented from being snapped and shot, the personal safety of workers is effectively guaranteed, and the protection performance is excellent; the device realizes integrated linkage of pressure test, safety protection and automatic unloading.

The utility model discloses a fish oil mixing filter device with spiral heating pipe. Including heating assembly, stirring subassembly, filter component and feeding assembly. Heating assembly has open heating bucket and spiral heating pipe, stirring subassembly contains mixing cavity, hollow oil pipe, rotating electrical machine, rotating shaft and stirring blade, filter component is constituted by filter bucket, lifting platform and filter baffle, and the first oil inlet pipe and second oil inlet pipe of feeding assembly are connected with crude oil tank and lye pool respectively. The device integrates multiple component functions, heats up quickly and evenly, the spiral heating pipe increases the heat exchange area, solves the traditional heating malady, the mixing and filtering are integrated, the transfer link is saved, the oxidation risk and the viscosity increase problem are reduced, the filter and the maintenance are optimized, the convex design and the liftable platform can separate, replace and clean the filter material, the oil inlet pipe is beneficial to the accurate proportioning and initial mixing. The device is suitable for refining fish oil and other materials, has multiple advantages, effectively integrates the function and has remarkable benefits.

The utility model discloses an inflatable soft unmanned aerial vehicle which comprises a shell mechanism, a pod is arranged at the bottom of the shell mechanism, a cross-shaped air bag body is rapidly inflated through a motor air pump, a four-way connector and a connecting pipe, air pressure is monitored in real time through a pressure sensor, inflation is automatically stopped after a set value is reached, stability is ensured, and when air is exhausted, the air pressure is monitored in real time. Quick deflation can be achieved by opening the electromagnetic valve, and operation is simple and efficient; the cross air bag airframe of the device adopts a soft structure to realize multidirectional impact resistance, the collision action time is prolonged through deformation, the impact force is effectively reduced, the integrity of the unmanned aerial vehicle after collision is guaranteed, the device is particularly suitable for operation in a complex environment, and compared with a traditional rigid structure, the weight of a soft frame is reduced, the portability and endurance are remarkably improved; the high flexibility of the device enables the size to be greatly compressed in a non-working state, the storage space is saved, and in addition, the device is high in adaptability and can be used for narrow or high-risk scenes.

The embodiment of the utility model discloses diaphragm cutting equipment which comprises a rack, a working platform is arranged on the rack, a transverse moving assembly is arranged on the working platform, a longitudinal moving assembly is arranged on a transverse sliding frame, a tool bit assembly is arranged on the longitudinal moving assembly, and the transverse moving assembly comprises a sliding assembly and a supporting driving assembly which are matched with each other. The supporting driving assembly comprises a transverse driving motor, the driving end of the transverse driving motor drives a synchronous wheel through a gear, the synchronous wheel is meshed with a synchronous belt transversely arranged on the working platform, and the sliding assembly comprises transverse sliding rails symmetrically arranged on the two sides of the working platform and sliding blocks matched with the transverse sliding rails. The transverse sliding frame is connected with the sliding block, the synchronous wheel drives a driven gear installed on the transverse sliding frame through a synchronous gear arranged outside the synchronous wheel, and the two supporting and driving assemblies are in linkage through a synchronous shaft.

This utility model discloses a pipe jacking axis measuring device, belonging to the field of municipal engineering construction surveying technology, aiming to solve the problems of poor adaptability, low adjustment accuracy, and complex operation of existing devices. The device includes a laser collimator main body, an adjusting frame, and a telescopic support rod. A limiting hole is provided on the side of the laser collimator main body, and the adjusting frame is assembled into the limiting hole. Three internal threaded sleeves are fixed on its outer side, and the telescopic support rod is detachably assembled into the internal threaded sleeves. The adjusting frame includes an outer frame, an inner frame, a rubber ring, a threaded knob, a limiting stake, a threaded stake, and a threaded short sleeve, enabling precise adjustment and locking of the laser collimator main body's direction and tilt angle. The telescopic support rod includes a hexagonal screw head, an outer long tube, an inner long tube, a hexagonal bolt, a limiting screw, and other components, supporting dual length adjustment of "coarse adjustment + fine adjustment," adapting to pipe jacking of different diameters. In scenarios with ultra-large diameter pipe jacking, a single support rod can be detached and bolted to form a stable triangular structure.

This invention discloses a multi-mode AI-powered smart memo and call reminder method, offering three scene switching modes: Boss Mode, Butler Mode, and Ox-Horse Mode. It supports user-defined AI greetings to the user and integrates memo, family birthday, anniversary, public holiday, calendar, and phone alarm functions. Users can freely choose reminder methods such as incoming calls, system notifications, and ringtone / vibration. Call reminders support AI voice interaction, allowing users to directly read out tasks, mark completions, postpone reminders, and schedule the next task. Birthdays and holidays can be accompanied by personalized call messages, and the alarm clock supports wake-up calls. This invention achieves compliant reminders by reading system do-not-disturb, mute, and volume permissions. Data is encrypted locally and synchronized with the cloud. With rich scenarios, user-friendly interaction, and complete and unified functions, it is suitable for smart reminders and schedule management on various mobile terminals.

This invention discloses a puncture-proof sharps container, relating to the field of medical device technology. It includes a container body with a rotating mechanism inside. A storage box for storing sharps is placed within the rotating mechanism. A sealing mechanism is provided at the top of the container body to seal it. A driving mechanism is provided inside the container body to drive the rotating mechanism to rotate. A lifting component is also provided inside the container body to extend the storage box out of the container body. The beneficial effects of this invention are: through the linkage design of the sealing mechanism and the driving mechanism, the user can sequentially complete operations such as opening the dispensing port and removing the needle by pressing the pressure plate, without direct contact with the sharps. Especially when removing the needle, the pressure plate drives the support tube to lock the cover with a locking plate, preventing accidental punctures due to accidental opening of the cover. Simultaneously, when removing the storage box, the lifting component automatically pushes the storage box out of the container body, eliminating the need for the user to reach inside, further reducing the risk of being cut by sharps.

The utility model relates to integrated hot melting tapping equipment which comprises a transverse moving assembly, a pre-trepanning assembly, a hot melting drilling assembly and a tapping assembly, the pre-trepanning assembly, the hot melting drilling assembly and the tapping assembly are all arranged on the transverse moving assembly, the pre-trepanning assembly is arranged on one side of the hot melting drilling assembly, and the tapping assembly is arranged on the other side of the hot melting drilling assembly. The pre-trepanning assembly comprises a connecting plate, a connecting box, a motor, a driving wheel, a driven wheel, a belt, a lifting driver, a rotating shaft assembly and a drill bit, the connecting plate is arranged on the transverse moving assembly, the connecting box is fixed to the connecting plate, the motor is arranged in the connecting box, the output end of the motor is connected with the driving wheel, and the driven wheel is connected with the belt. The pre-punching assembly is arranged on the transverse moving assembly, the precise size and position of a hole can be ensured through pre-punching, the tapping assembly can enter the hole more easily and form firm connection, the cutting resistance of hot melting tapping in a material can be reduced, and operation is easier and more efficient.

This invention provides a method for detecting tetrachloronaphthalene, a persistent organic pollutant in eel products. The specific steps include: eel sample preparation, target analyte extraction and matrix purification, followed by analysis using ultra-high performance liquid chromatography-atmospheric pressure chemical ionization tandem mass spectrometry (UPLC-APCI-MS / MS). The measured peak area, fractionation ratio, and other relevant parameters are substituted into a specific formula to calculate the measured value of tetrachloronaphthalene in the test solution. This method fills the gap in my country's technology for detecting tetrachloronaphthalene-like persistent organic pollutants in eel products. It effectively eliminates interference from the complex matrix of eel products, accurately determines four tetrachloronaphthalene isomers in trace amounts, and possesses significant advantages such as high sensitivity, strong anti-interference ability, simple operation, and high detection accuracy.