2060results about How to "Easy to close" patented technology

The invention discloses an air conditioner and a control method thereof. The air conditioner comprises a main body internally provided with an air duct, the air duct is provided with a front air outlet and a lower air outlet, the front air outlet is located in the front side wall of the main body, the lower air outlet is located in the front of the lower side wall of the main body, and the size of the front air outlet in the vertical direction is larger than that of the lower air outlet in the front-back direction; the opening and closing doors are sequentially arranged in the vertical direction and arranged at the front air outlet in a swinging mode, the opening and closing doors are arranged to be capable of jointly closing the front air outlet, the opening and closing door located at the lowest position is arranged to be capable of closing the lower air outlet, and the lower air outlet is in an open state on the basis that the front air outlet is jointly closed by the opening and closing doors. The air conditioner is matched with an engineering panel so that hot air and cold air can be supplied to the lower portion, and hot air and cold air can also be supplied to the front portion; in addition, the size of the front air outlet in the vertical direction is larger than that of the lower air outlet in the front-back direction, and therefore condensation caused by air backflow is not prone to occurring in the cold air discharging process of the lower air outlet.

The invention relates to plasma gun automatic spraying equipment which comprises a workbench, an X-axis moving assembly, a Y-axis moving assembly and a rotating shaft assembly, the X-axis moving assembly, the Y-axis moving assembly and the rotating shaft assembly are located above the workbench, the rotating shaft assembly is connected with an ion gun fixing support, and the X-axis moving assembly, the Y-axis moving assembly and the rotating shaft assembly move independently or cooperatively. And the plasma gun on the ion gun fixing bracket is driven to spray the workpiece according to the set motion path. Through an advanced automatic control system and an intelligent adjusting function, the spraying process can be accurately controlled without manual intervention, the consistency of the production efficiency and the spraying quality is remarkably improved, meanwhile, the dependence on manual operation is reduced, and the equipment maintenance cost is reduced. The equipment disclosed by the invention has higher adaptability, can be automatically adjusted to adapt to different types of workpieces, has a fully automatic spraying process, has higher application and popularization values and is suitable for large-scale production.

The utility model relates to the technical field of medical instruments, and discloses a lighting drag hook which comprises a handle, a drag hook opening piece and a built-in light source device. A first channel is arranged in the handle; one end of the drag hook distraction sheet is connected with the handle, and the other end of the drag hook distraction sheet is a hook body; a second channel is arranged at one end, connected with the handle, of the drag hook distraction sheet, and the second channel is communicated with the first channel; the built-in light source device comprises a battery assembly and a lamp panel, the lamp panel is arranged on the side, away from the handle, of the retractor opening piece, and the battery assembly is arranged in the first channel and electrically connected with the lamp panel. The illumination device is simple in structure and convenient to use, illumination is provided for an operation part while the operation part is fully exposed, the deep operation view can be clearly displayed, operation safety is improved, operation time is shortened, operation efficiency is improved, and normal operation is guaranteed.

The invention provides micromolecular hydrolat for fading melanin and promoting skin metabolism and a preparation method thereof, and relates to the technical field of biological preparation, the preparation method comprises the following steps: S1, adding rosa damascena flower water into a milk pot, stirring at a stirring speed of 20-30 rpm, and heating to 85-90 DEG C; s2, adding the osmanthus fragrans extract, the bitter orange flower water, the sandalwood extract and the jasmine flower water, continuously stirring at the stirring speed of 20-30 rpm, and keeping the temperature for 30-40 minutes; s3, cooling to 40-45 DEG C, adding polylysine, continuously stirring at the speed of 20-30 rpm, and stopping stirring when cooling to 35 DEG C; s4, sampling and detecting; s5, filling is conducted through a filling and cap screwing all-in-one machine used for small molecule hydrolat filling; and S6, packaging, inspecting, and putting into a finished product. The invention solves the problems that the filling machinery in the prior art needs to be operated by a plurality of machines on an assembly line to finish the processes of bottling, filling, feeding bottle caps and sealing the bottle caps, so that the machinery is large in occupied area, high in cost, low in efficiency and incapable of keeping up to the speed of an automatic production line, and can be used for solving the problems of large occupied area, high cost, low efficiency and incapability of keeping up with the speed of the automatic production line.

The utility model discloses a window aluminum alloy frame machining aluminum skimming cleaning device which comprises a collecting frame, bearing plates are fixedly connected to the interior of the collecting frame at equal intervals, an operation table is fixedly connected to the tops of the bearing plates, a cleaning mechanism is arranged in the collecting frame and comprises a cleaning assembly and a collecting assembly, and the cleaning assembly is fixedly connected with the operation table. The cleaning assembly and the collecting assembly are used in cooperation, the output end of the motor is fixedly connected with one end of a reciprocating lead screw, the outer side of the reciprocating lead screw is in threaded connection with a mounting plate, a cleaning brush is mounted at the bottom of the mounting plate, and the other end of the mounting plate is slidably connected with a translation rod. According to the aluminum alloy frame machining aluminum skimming cleaning device for the window, through the arranged cleaning mechanism, aluminum skimming generated in production can be collected and classified, meanwhile, the aluminum skimming on the top of the operation table can be rapidly cleaned, manual cleaning is not needed, the cleaning effect is good, the structure is simple, and practicability is high.

The invention relates to the technical field of medical instruments, in particular to an oral cavity opening device clinically applicable to the stomatology department, and aims to solve the technical problems that an existing oral cavity opening device is simple in structure and single in function, the opening size cannot be freely adjusted, and meanwhile during examination, the opening size cannot be freely adjusted. In the prior art, medical staff need to observe pathological changes in the oral cavity of a patient with naked eyes, efficiency is low, and the risk of cross infection is brought to the medical staff. According to the technical scheme, the device comprises a fixing support, two positioning blocks are fixedly installed in an inner cavity of the fixing support, and a limiting rod is rotationally connected between the opposite sides of the two positioning blocks through a bearing. The oral cavity expanding device has the advantages that by arranging the expanding unit, the opening and closing degree of the oral cavity of a patient can be adjusted, by arranging the positioning unit, the expanding unit can be positioned, the use stability of the expanding unit is improved, by arranging the camera shooting mechanism, the oral cavity of the patient can be shot, and cross infection caused by visual inspection of medical staff is avoided.

The invention relates to the technical field of water conservancy flood control engineering, in particular to a multi-element monitoring intelligent flood control dam. The system comprises a dam body structure system and a monitoring system, the monitoring system comprises a water body monitoring system and an environment monitoring system, the dam body structure system comprises a fixed dam body and a movable dam body, and the water body monitoring system comprises a water level monitoring device, a flow monitoring device and a flow velocity monitoring device. The environment monitoring system comprises a rainfall monitoring device and a soil body monitoring device. The dam body structure system is used for adjusting water storage and flood control, the monitoring system is used for monitoring related data of a dam body and a river channel, disaster prediction and early warning can be conducted by means of various data, the safety of the dam and the downstream is effectively guaranteed, and the water body monitoring system is beneficial for guaranteeing monitoring of the upstream of the dam body. The environment monitoring system is favorable for predicting the influence on the river channel and the dam body through monitored environment data, and comprehensively judging and predicting natural disasters and environment changes.

The utility model discloses an ingredient mixing device for steamed stuffed bun stuffing processing in the technical field of ingredient mixing. The ingredient mixing device comprises a mixing box, supporting columns are fixedly connected to the four corners of the bottom of the mixing box, a fixing cover is installed on the tops of the supporting columns, a feeding pipe is inserted into the right side of the upper surface of the fixing cover, and a sealing cover is installed on the top of the feeding pipe; the stirring mechanism is installed in the middle of the upper surface of the fixing cover, a discharging pipe is inserted in the middle of the bottom of the mixing box, the fixing cover is arranged, the interior of the mixing box is conveniently sealed, the batching quality is influenced, feeding is conveniently conducted in the mixing box through a feeding pipe and a sealing cover, and after feeding, the sealing performance in the mixing box can be ensured; and external impurities are prevented from entering the material mixing box in the material mixing process, the interior of the material discharging pipe is conveniently dredged through the material discharging pipe dredging mechanism, and the interior of the material discharging pipe is prevented from being blocked by materials in the material discharging process.

The invention relates to a degradable surgical suture capable of self-constricting under the driving of near-infrared light and accelerating wound healing as well as a preparation method and application of the degradable surgical suture, and the degradable surgical suture capable of self-constricting under the driving of the near-infrared light is developed by virtue of a photo-thermal conversion effect of polydopamine on the basis of a thermal response characteristic of a shape memory material. And on the basis, a thermal control drug release system is endowed to the suture line to synergistically accelerate the wound healing process, and various suture problems confronted by the internal wound of the body are solved.

The invention relates to gas / oil well mouth sealing equipment, in particular to an inner inserting pipe type well cementation well mouth sealing device structure which comprises a drill rod radish head, a first annular protrusion I, a second annular protrusion II, a sealing ring, a sealing ring, a sealing ring and an inner inserting pipe sealing ring, the outer cylindrical face of the drill rod radish head is provided with a first annular protrusion I, and the lower end face of the first annular protrusion I is a conical slope b; a second annular bulge II is arranged on the inner wall of the upper section part of the sleeve joint, and the upper end surface of the second annular bulge II is a conical inclined surface c; a central hole is formed in the pressing cap; the drill rod radish head seat is placed in the sleeve joint, the conical inclined surface b is adaptively propped against the conical inclined surface c, and a sealing ring is arranged between the conical inclined surface b and the conical inclined surface c; a pressing cap is arranged on the radish head of the drill rod from top to bottom in a sleeving mode, abuts against the conical slope a and is connected with the sleeve joint in a threaded fit mode; cement paste is injected into a well through the drill rod, and the cement paste directly enters a gap between the stratum well wall and the casing pipe from the lower end of the drill rod, so that well cementation is achieved. The sealing device has the beneficial effects that the sealing effect is excellent, and the situation of sealing failure is not prone to occurring; the structure is simple and cost is low.

The invention provides a horizontal sliding window hardware system with a locking function, which comprises a horizontal sliding hinge, a horizontal sliding driving mechanism, a transmission mechanism and a locking mechanism, and is characterized in that the horizontal sliding hinge is connected between a window sash and a window frame; the horizontal pushing driving mechanism is arranged on the window frame and used for providing acting force for driving the window sash to be opened or closed. One end of the transmission mechanism is connected with the output end of the horizontal pushing driving mechanism, and the other end of the transmission mechanism is connected with the window sash and used for opening or closing the window sash. The locking mechanism comprises a first locking assembly and a second locking assembly, the first locking assembly is connected to the output end of the horizontal pushing driving mechanism and located in the window frame, and the second locking assembly is arranged on the window sash. According to the scheme, the transmission mechanism and the locking mechanism are linked with the horizontal pushing driving mechanism at the same time. And the horizontal pushing driving mechanism and the transmission mechanism are arranged on the window frame together for linkage, so that the matching precision is reduced, and hardware is convenient to maintain.

The invention discloses a method for manufacturing a rigid-flex printed circuit board with a crossed surface flexible layer, which comprises the following steps of: taking a double-sided flexible copper-clad plate, manufacturing a copper layer and an insulating medium layer on one surface of the double-sided flexible copper-clad plate to form a groove body, forming an etching and ablation groove, distributing the groove body corresponding to the edge of a flexible board area, attaching a cover film in the range of the groove body, and forming an upper flexible board and a lower flexible board, manufacturing a rigid core plate layer and prepregs, stacking and laminating to form a laminated plate, manufacturing an outer layer circuit pattern, and then forming to form the rigid-flexible combined plate; optionally, a windowing rigid core plate and a windowing prepreg are manufactured, one layer of flexible plate is stacked and pre-pressed to form a groove body structure, a release pad is arranged in the groove body, and the other layer of flexible plate is stacked and pressed to form a pressed plate; the etching and ablating groove is formed in the flexible plate, it is guaranteed that the problem that the flexible plate is difficult to mill during forming is solved, the mode that the release pad is arranged is selectively adopted to replace the mode that the flexible plate is broken off after depth-controlled milling, and the machining quality and precision of the plate body are effectively improved.

The invention belongs to the technical field of regenerated medical dressings, particularly relates to a plant polysaccharide hydrogel medical dressing for promoting tissue damage repair and application thereof, and provides the following scheme that a medical and mechanical combined product comprises a regenerated medical dressing and a low-temperature sterile storage box for storing the regenerated medical dressing, the regenerated medical dressing comprises a hydrogel main body, open pores formed in the hydrogel main body, sustained-release vesicles arranged in the open pores, and stem cells and a cell culture medium which are filled in the sustained-release vesicles. The stem cell hydrogel can rapidly break blood, rapidly stop bleeding by being attached to a wound surface and promote wound closing, stem cells are inoculated to the upper surface of the hydrogel formed by dendrobium polysaccharides, aloe, lily, coptis chinensis and honeysuckle, safe application of the stem cells is achieved, active factors secreted by the stem cells are slowly released to the skin wound surface, and the wound healing effect is achieved. Through contact stimulation between cells, various cytokines can be secreted better, and the skin repair efficiency is improved.

The cosmetic container comprises an outer cover assembly, an inner container assembly, a bottom assembly and a push piece, the inner container assembly is detachably installed in the bottom assembly, the inner container assembly comprises an inner cover, a middle ring and a material carrying disc, the inner cover covers the middle ring in an airtight mode, the material carrying disc is fixedly installed in the middle ring, the push piece is movably installed in the bottom assembly, and the push piece is movably installed in the bottom assembly. The outer cover assembly is buckled to the bottom assembly, after the outer cover assembly is opened, the outer cover assembly and the push piece are in a linkage relation, the outer cover assembly can abut against the push piece and push the push piece to move, the push piece drives the inner cover to move in the direction away from the middle ring, and a gap is formed between the inner cover and the middle ring; and the linkage relation between the outer cover assembly and the push piece is relieved. In the process of opening the outer cover assembly, the inner cover can be driven to move so that a gap can be formed between the inner cover and the middle ring, then the air pressure inside and outside the inner cover can be in a balanced state, and the powder flying phenomenon is effectively prevented.

The invention discloses a method for realizing low-temperature diffusion bonding of zirconium and alloy thereof based on a constant-current electric field, and relates to the technical field of material bonding. The method aims at solving the problems that in current direct diffusion bonding of zirconium and zirconium alloy, the joint strength is low at the low bonding temperature, and base metal performance is reduced and post-welding deformation is large at the high bonding temperature. According to the method, hole closing and atomic diffusion at a diffusion connection interface are jointly promoted mainly through the electromigration effect under the action of the constant-current electric field, the vacancy concentration of zirconium and the alloy thereof improved by the constant-current electric field, and high-temperature plasticity, so that the high-strength zirconium and the alloy connector thereof are obtained at low temperature. The method for realizing low-temperature diffusion bonding of the zirconium and the zirconium alloy under the action of the constant-current electric field can be obtained.

The utility model discloses a feeding device for producing an environment-friendly plasticizer, which comprises a bottom plate, a reaction kettle is fixed at the top of the bottom plate, a feeding hole is formed in the top of the reaction kettle, a top plate is arranged above the bottom plate, a lifting mechanism is arranged between the bottom plate and the top plate, the lifting mechanism comprises a limiting rod, and the limiting rod is arranged on the bottom plate. The feeding device comprises a bottom plate and a top plate, a limiting rod is fixed between the bottom plate and the top plate, a rotating shaft is rotatably mounted between the bottom plate and the top plate through a bearing, and a first servo motor is fixed to the top, penetrating through the top plate, of the upper end of the rotating shaft. And by starting a second servo motor, the feeding box and the discharging pipe can be driven to rotate reversely by 180 degrees, so that the bottom of the discharging pipe can be located above the feeding port, it is guaranteed that raw materials discharged by the discharging pipe cannot be scattered outside the feeding port, and waste of the raw materials is avoided.

An optical lens, a camera module and a terminal device are provided, the optical lens has six lenses with refractive power, the six lenses comprise a first lens to a sixth lens in sequence from an object side to an image side along an optical axis, the refractive power of the first lens is negative, negative, positive, negative, positive and negative, and the object side surface and the image side surface of the first lens are a convex surface and a concave surface near the optical axis respectively; the object-side surface and the image-side surface of the second lens element are respectively a concave surface and a convex surface near the optical axis; the object side surface and the image side surface of the third lens are convex surfaces near the optical axis; the fourth lens element has a convex object-side surface and a concave image-side surface in paraxial regions, respectively; the fifth lens element has an object-side surface and an image-side surface being convex in a paraxial region. The sixth lens element has a concave image-side surface in a paraxial region. The seventh lens element has a convex object-side surface and a concave image-side surface in paraxial regions, respectively. The optical lens satisfies the following relational expressions: 65 degree lt; a FOVlt; the angle is 75 degrees, and the tilt is 3.5 degrees; tTL / Hlt; 4.2. The optical lens provided by the invention can realize miniaturization and has the characteristic of a large field angle.

The invention discloses a radiotherapy system, an auxiliary system and method for evaluating free radical damage and application thereof, a tube body of a cuvette of the auxiliary system comprises side surfaces, a top surface and a bottom surface, the top surface is provided with an opening matched with a shading cover, and the side surfaces comprise a first side surface, a second side surface, a third side surface and a fourth side surface; one end of the first optical fiber is connected with the laser assembly, and the other end of the first optical fiber is connected with the first side surface; the irradiation assembly is arranged on one side of the top surface; the fluorescent light filter is arranged on the third side surface or the fourth side surface; one end of the second fiber is connected with the fluorescent filter, and the other end of the second fiber is connected with the luminosity assembly; the chamber is used for accommodating the cuvette and the fluorescent light filter; for FLASH radiotherapy, the real-time accurate detection of the fluorescence intensity can be realized by optimizing the detection environment, and a reliable platform is provided for free radical damage assessment.

The invention relates to a system and a method for measuring liquid drainage and internal leakage of a pressure accumulator of an aircraft hydraulic system. The system comprises a liquid discharge and leakage measuring device and a control unit connected with the liquid discharge and leakage measuring device, the liquid discharging and leakage measuring device comprises an oil liquid detector arranged near the upper end of the liquid discharging and leakage measuring device and used for detecting the internal leakage oil liquid amount of the pressure accumulator of the aircraft hydraulic system. The liquid discharging and leakage measuring device further comprises an automatic liquid discharging valve arranged in the liquid discharging and leakage measuring device and used for discharging internal leaked oil. The control unit is configured to judge whether the internal leakage oil quantity is higher than or equal to an oil quantity warning value or not; judging whether the system pressure is lower than or equal to a preset pressure value; if the control unit receives the internal leakage signal and the system pressure relief signal, the control unit sends an opening command to control the automatic drain valve to be opened; and if the internal leakage oil quantity is lower than the oil quantity warning value, the oil detector relieves the internal leakage signal and sends the internal leakage signal to the control unit, and the control unit sends a closing command to control the automatic drain valve to be closed.

The utility model relates to the technical field of treatment of wastewater containing iron and manganese, in particular to a filtering device for removing iron and manganese. The device comprises a box body, the interior of the box body is sequentially divided into a reaction part, a filtering part and a water outlet part from top to bottom, the box body is provided with an air inlet, a water inlet and an alkali adding opening which are communicated with the reaction part and a water outlet communicated with the water outlet part, and a blocking baffle is movably arranged between the reaction part and the filtering part. The blocking baffle is used for communicating or separating the reaction part and the filtering part, and a stirring mechanism is arranged between the reaction part and the blocking baffle. The reaction part and the filtering part can be separated by utilizing the blocking baffle, so that water containing iron and manganese can be fully oxidized and precipitated in the reaction part, then the blocking baffle is opened, the reaction part is communicated with the filtering part, filtering treatment is performed, oxidation precipitation and filtering are performed in stages, and the treatment effect is improved.

The invention discloses an optical lens, a camera module and a terminal device, the optical lens comprises seven lenses, the first lens has negative refractive power, and the object side surface and the image side surface of the first lens are a convex surface and a concave surface near an optical axis respectively; the second lens element with negative refractive power has a concave object-side surface and a convex image-side surface in paraxial regions, respectively. The third lens element with positive refractive power has an object-side surface and an image-side surface being convex in a paraxial region. The fourth lens element with positive refractive power has an object-side surface and an image-side surface being convex in a paraxial region thereof. The fifth lens element with positive refractive power has an object-side surface and an image-side surface being convex in a paraxial region. The sixth lens element with negative refractive power has an object-side surface and an image-side surface being concave in a paraxial region. The seventh lens element with positive refractive power has a convex object-side surface and a concave image-side surface in paraxial regions, respectively. The optical lens satisfies the following relational expressions: FOV is greater than or equal to 130 degrees and less than or equal to 160 degrees, and R6 / F3 is greater than or equal to-7.5 and less than or equal to-3.0.

The invention relates to an air bag type sealing and closing device for an unprotected opening of a freeboard deck passing through a penetrating object, the upper part of the unprotected opening of the deck is connected with a first annular plate through a split bolt and a sealing gasket, the upper part of the first annular plate is fixedly connected with an upright cylinder, and the inner side of the cylinder is fixedly connected with a second annular plate; an annular rubber air bag is arranged between the first annular plate and the second annular plate, an inflation opening communicated with the annular rubber air bag is formed in the side wall of the barrel, the annular rubber air bag expands towards the middle after being inflated to block an unprotected opening of a deck, and meanwhile a penetrating object penetrates through the unprotected opening all the time and does not need to be moved away. The deck opening with the penetrating object does not serve as an unprotected opening any more, and the requirements of ship stability and load line convention are met; a clamp is not needed, and the problem that the clamp is inconvenient to disassemble and assemble is solved; through remote control and on-site operation, the air bag can reach different pressures to meet the requirements of different tightness.

The utility model discloses an environment-friendly purification treatment device for chromic acid mist, which comprises a purification device body and two groups of support frames, the bottom end of the purification device body is symmetrically provided with the two groups of support frames, the outer wall of the purification device body on one side of the support frames is provided with an air inlet pipeline, the bottom end of the air inlet pipeline is provided with a first flange plate, and the bottom end of the first flange plate is provided with a second flange plate. A first pipeline is installed at the end, away from the air inlet pipeline, of the first flange plate, a second pipeline is installed at the top end of the purification device body, stepping motors are symmetrically installed in the purification device body, threaded rods are installed at the output ends of the stepping motors, and the threaded rods are movably connected with the purification device body. According to the environment-friendly purification treatment device disclosed by the utility model, convenient movable adjusting type filtration is realized, convenient rotating type opening and closing of the environment-friendly purification treatment device are facilitated, and the control and adjustment convenience and the environment-friendly purification effect of the environment-friendly purification treatment device are improved.

The utility model provides a burette belt punching device with a protection structure, which relates to the technical field of punching devices and comprises a base, a support is fixedly mounted on the surface of the base, an air cylinder is fixedly mounted on the surface of the support, a rotating rod A is rotatably connected into the support, a torsional spring A is sleeved on the surface of the rotating rod A, and the torsional spring A is sleeved on the surface of the rotating rod B; a baffle is fixedly installed on the surface of the rotating rod A, a tempered glass plate is fixedly installed on the surface of the baffle, a fixing hole is formed in the surface of the baffle in a penetrating mode, a limiting block is fixedly installed on the surface of the base, and a fixing block is fixedly installed on the surface of the limiting block. By arranging the baffle, a rotating rod A, a torsional spring A, a tempered glass plate, a limiting block, a fixing block and a rotating block, the effect that a worker can conveniently close the baffle and open the baffle at the same time is achieved, so that the situation that the worker is injured during punching is avoided, the structure is simple, and practicability is high.

The utility model discloses an easy-to-adjust casing fixing structure for sausage processing. The easy-to-adjust casing fixing structure comprises a base, an adjusting mechanism and a fixing mechanism, guide rail frames are arranged on the left inner wall and the right inner wall of the base, a workbench is slidably connected between the guide rail frames, a mounting plate is arranged at the right end of the upper side face of the workbench, a rotating shaft is rotatably connected to the middle of the mounting plate, casing sleeving columns are arranged at the front end and the rear end of the upper side face of the workbench, and supporting legs are evenly distributed on the lower side face of the base. The adjusting mechanism is arranged in the base, and the upper end of the adjusting mechanism is arranged at the lower end of the workbench; the fixing mechanism is arranged on the left side face of the rotating shaft, and the fixing mechanism and the casing sleeve column are installed in a matched mode, according to the casing fixing structure easy to adjust for sausage processing, fixing of casings and automatic closing-up of the tail ends of the casings are convenient, the height of the casings is convenient to adjust according to conditions, manpower is saved, and the working efficiency of sausage processing is greatly improved.

The utility model discloses a metal casting tension testing device, relates to the technical field of metal casting testing, and solves the problems that a currently arranged pull ring can only perform tension testing on a rod-shaped forge piece, when a block-shaped forge piece needs to be detected, a clamp needs to be frequently replaced, different types of forge pieces are inconvenient to process and test according to needs, and the test efficiency is high. The technical problems that in the tensile test process, part of metal parts are fractured and splashed, and potential dangers are caused to workers are solved. Comprising a workbench, and a rectangular box is fixedly mounted in the middle of the top end of the workbench; the metal casting detection device not only can be used for rod-shaped metal castings, but also can be used for detecting blocky metal castings, and can be used for detecting different types of metal castings, so that the application range is greatly widened, the condition of splashing caused by breakage of the metal castings is avoided, and the personal health of workers is protected.

The utility model discloses an optical fiber access terminal box and an optical fiber access device. The optical fiber access terminal box comprises a terminal box, an optical network unit and a cable, the terminal box comprises a cover plate and a box body, the box body is provided with a mounting cavity with an opening in one end, the cover plate movably covers the opening, and a connector is arranged on the outer side of the box body. The optical network unit is mounted on one side, facing the mounting cavity, of the cover plate; one end of the cable is connected with the optical network unit, and the other end is connected with the joint. According to the optical fiber access terminal box, the optical network unit is installed on the cover plate, so that wiring, installation and maintenance of the optical network unit are more convenient, meanwhile, compared with a structure in which the optical network unit is arranged in the box body, the optical fiber access terminal box can utilize the space in the terminal box more reasonably, the size of the structure is convenient to reduce, and the cost is reduced. Therefore, the optical fiber access terminal box is miniaturized.

The invention relates to the technical field of chain machining, in particular to an electric saw chain machining platform with a protection mechanism, which comprises a box body, a protection plate and an intermittent overturning platform, and further comprises a pressing mechanism movably mounted in the box body, a driving mechanism fixedly mounted on one side of the box body and an automatic feeding mechanism fixedly mounted on the back surface of the box body, eight sets of positioning mechanisms are installed on the outer side of the intermittent overturning platform at equal intervals through sliding grooves, and one end of the intermittent overturning platform is in transmission connection with the automatic feeding mechanism. The driving mechanism drives the intermittent overturning platform to intermittently rotate, the pressing mechanism vertically reciprocates, meanwhile, the intermittent overturning platform drives the automatic feeding mechanism to perform reciprocating feeding, and the pressing mechanism drives the positioning mechanism and the protection plate to cooperatively work, so that linkage of continuous feeding, accurate positioning, safety protection and machining is realized, and the production efficiency is improved. And the machining efficiency and the operation safety of electric saw chain parts are remarkably improved.

The utility model discloses a geothermal water recharging device which comprises a bottom plate, a backflow well and a water storage tank, the left side of the top of the bottom plate is fixedly connected with the bottom of the backflow well, the right side of the top of the bottom plate is fixedly connected with two hydraulic rods, and the piston ends of the hydraulic rods are fixedly connected with the two sides of the bottom of the water storage tank. The hydraulic rod is arranged and started, so that the hydraulic rod drives the water storage tank to move upwards, the height difference is generated between the water storage tank and the backflow well, and then the water in the water storage tank continuously flows to a lower position through the water guide pipe by utilizing siphoning, so that the water is recharged into the backflow well; the problems that a user needs to start a plurality of pressure pumps for a long time to recharge water in the water storage tank into the recharge well to cause loss of a large amount of electric power, and the use cost and the maintenance cost are increased due to the fact that the plurality of pressure pumps need to be used cooperatively are solved, and the effects of saving the electric power and automatically flowing and recharging are achieved.