43results about How to "Exquisite structure design" patented technology

The invention relates to the technical field of fatty acid wastewater treatment, in particular to an efficient fatty acid wastewater separation device and method.The efficient fatty acid wastewater separation device comprises a mixing and filtering barrel, a rotary mixing device, a rotary filtering device, a dirt collecting device, a rotary driving shaft and an interval driving device; an oil-water separation chamber is arranged above the filtering chamber, the rotary conveying device is installed in the filtering chamber of the mixing filtering barrel, a rotary spray head is arranged at the water outlet end of the rotary conveying device, the rotary filtering device is installed between the filtering chamber and the oil-water separation chamber, and the dirt collecting device is installed on the outer side of the mixing filtering barrel. The rotary driving shaft is installed in the mixing and filtering barrel, the interval driving device is installed above the rotary driving shaft and used for driving the rotary driving shaft to rotate, and the separation efficiency and the separation quality can be effectively improved.

The invention relates to the field of automatic production lines, and discloses small power supply charger boxing equipment which comprises a lower-layer transmission line, a box body jacking and extending mechanism and an upper-layer bagging and boxing mechanism. The lower-layer transmission line transmits a box body to the box body jacking and extending mechanism from a starting position, and the box body jacking and extending mechanism jacks and extends the box body at the tail end of the transmission line to the upper-layer transmission line; the product feeding conveying mechanism and the PE bag feeding conveying mechanism of the upper-layer bagging and boxing mechanism convey products and PE bags to the bagging module correspondingly, the products are bagged into the PE bags, and the PE bags are conveyed to the position of the boxing module through the PE bag feeding conveying mechanism. Compared with the prior art, box conveying and bagging boxing are divided into an upper layer and a lower layer through the lower-layer conveying line and the box jacking and stretching mechanism, PE bag openings are folded upwards through the overturning and transplanting module and the bag folding clamping jaw module, the occupied space of equipment is reduced, and meanwhile bagged products are prevented from being separated from PE bags.

The utility model discloses a grabbing type sea cucumber fishing robot. The sea cucumber collecting robot comprises a robot frame, a five-degree-of-freedom mechanical arm and a sea cucumber collecting device, a mechanical arm base and a sea cucumber collecting device are fixedly arranged on the top of the robot frame, a sealing bin is fixedly arranged at the bottom of the robot frame, and vertical propellers and horizontal propellers are fixedly arranged on the periphery of the robot frame. And the synchronous pulley II is driven by the stepping motor I to realize the rotary motion of the mechanical arm. According to the underwater robot, the five-degree-of-freedom mechanical arm and the eight-shaft propeller are adopted, and free movement and flexible grabbing of the robot under water are achieved. The sea cucumber catching robot can replace manpower to catch sea cucumbers and is not limited by seasons. The water pressure borne by the device is far higher than that borne by human beings, so that the device has higher safety. The sea cucumber catching robot is used for replacing manual work, and potential hazards of the marine environment to the body health of a caught person are effectively avoided.

The invention discloses a tank cleaning instrument for a Suma tank and a using method of the tank cleaning instrument, and belongs to the field of cleaning devices in containers. The tank cleaning instrument for the Suma tank comprises a rack, the transmission device is fixedly arranged on the rack; the transmission device comprises a driving motor, an annular guide rail, a transmission belt and a sliding seat; the transmission device is connected with a plurality of connecting support plates; the placing seat is fixedly arranged on the upper surface of the connecting supporting plate; the lifting device comprises a lifting component bracket, a lifting driving component and a connecting block; the gas circuit device comprises a three-way electromagnetic valve, a gas filling pipe, a gas extraction pipe and a gas inlet and outlet straight pipe; the three-way electromagnetic valve is mounted on the connecting block; the upper end part of the gas path connecting part is connected with the lower end of the gas inlet and outlet straight pipe, and the lower end part of the gas path connecting part is connected with a gas production port of the Suma tank. The tank cleaning instrument for the Suma tank is exquisite in structural design, the labor intensity of operators is relieved, and the cleaning stability of the Suma tank is high; the tank cleaning instrument for the Suma tank can be automatically and intelligently used, and precise control over the cleaning process is achieved.

The invention relates to the technical field of motor braking, and discloses an automatic braking system for power failure of a linear motor. A braking mechanism is arranged between a secondary transplanting block and a linear rail; the braking mechanism comprises a base block and a sliding block, a magnetic attraction assembly is arranged between the base block and the sliding block, and a hydraulic band-type brake assembly used for braking is arranged on the sliding block; the hydraulic band-type brake assembly used for braking is driven by the magnetic attraction assembly to work, that is, after the linear motor is powered off, a coil is automatically powered on and magnetized, a magnetic attraction piece is attracted to the base block, then the magnetic attraction piece drives a piston to move through a connecting rod, a profiling push block is driven to stretch out through the hydraulic effect to tightly hold a linear rail, and therefore the braking function is achieved; under the action of external atmospheric pressure, the piston and the profiling push block are shrunk and reset again; the system is exquisite in structural design, high in response speed, low in space requirement and easy to install, the cost is greatly reduced, and the occupied space is reduced.

The application provides a karst region foundation pit gushing water treatment and reinforcement method, wherein the gushing water treatment comprises the following specific steps: determining the position of a cave cavity in the foundation pit range; analyzing and evaluating the risk level of gushing water damage when the foundation pit is excavated to a preset depth and in the use stage of the foundation pit; vertically arranging a flow guide hole, the bottom end of the flow guide hole penetrating through the cave cavity, and a flow guide pipe being sleeved in the flow guide hole, and a water permeable hole being arranged on the side wall of the flow guide pipe in the cave cavity; fixing the flow guide pipe; vertically arranging a plurality of gravel filling holes communicating with the cave cavity, and inserting a flow meter for gushing water observation into the gravel filling hole; filling gravel into the cave cavity through the gravel filling hole; foundation pit excavation support and underground gushing water monitoring. The application can overcome the potential subsequent risk caused by plugging in the traditional karst cavity treatment, and improve the uplift and compression bearing capacity of the foundation pit.

This utility model discloses a static mixing and conditioning device for LPG and biogas, belonging to the field of gas mixing technology. The device includes a main pipeline, an LPG supply pipeline, and a unique jet mixing structure. The jet mixing structure has two rows of functionally differentiated jet orifices for achieving rapid and uniform mixing of LPG and biogas. The device is characterized by integrating an automatic control assembly composed of physical components, including sensors installed on the pipeline, a central controller, and an electric regulating valve installed on the LPG pipeline. These components are physically connected and transmit signals through circuitry, enabling the device to automatically adjust the LPG injection rate based on real-time monitored gas parameters, ensuring a stable calorific value of the mixed gas. This utility model solves the technical challenges of biogas grid connection through a purely physical structure and electromechanical integration, offering reliable structure and precise control.

The utility model discloses high-strength anti-theft access control equipment for an access control system, and relates to the field of building anti-theft door access control. The door control host comprises the mounting mechanism, the mounting mechanism comprises the mounting frame, the outer surface of the mounting frame is provided with the movable groove, the door control host can stably work at different heights by arranging the baffle and the anti-pinch mechanism, and the mounting mechanism provides stable and adjustable support, so that the safety of the door control host is improved, and the safety of the door control host is improved. The height is automatically adjusted through a motor and a lead screw, the requirements of different users are met, the stability and safety of movement of the access control host are ensured through the design of a movable groove and a baffle, the problem of jamming or deviation is avoided, meanwhile, the situation that the hands of the users are inserted into the mounting mechanism is avoided, and the hand clamping prevention mechanism adopts a flexible piece made of rubber, so that the safety of the users is improved. The risk that a user is pinched in the moving process of the access control host is effectively prevented, and the potential safety hazard that fingers of children are possibly pinched in the prior art is directly solved.

The application discloses a miniaturized multilayer capacitive coupling LTCC dual-frequency antenna, which comprises an LTCC substrate, four metal layers embedded in the LTCC substrate, and a feeding electrode, a rear auxiliary electrode, a left ground electrode and a right ground electrode packaged on the surface of the LTCC substrate. The LTCC substrate comprises five dielectric layers, and the four metal layers are sequentially stacked in the vertical direction and are separated by the dielectric layers between adjacent metal layers. The four metal layers comprise a first coupling patch and a second coupling patch, a third coupling patch, a first radiation plate and a second radiation plate. The first coupling patch and the third coupling patch are coupled with the first radiation plate through interlayer coupling to generate a first resonant frequency; and the second coupling patch and the second radiation plate are coupled through interlayer coupling to generate a second resonant frequency which is higher than the first resonant frequency. The application realizes dual-frequency operation in a small size by optimizing the antenna structure, and has the characteristics of simple structure, easy processing and stable performance.

This utility model discloses a foldable temporary sewage filter fence, which includes a fixed base plate, two fixed vertical plates fixed on the fixed base plate, and a fixed horizontal axis fixed between the two fixed vertical plates. A first water-blocking frame is rotatably fitted on the fixed horizontal axis. A mounting groove is opened on one side of the first water-blocking frame. A second water-blocking frame is rotatably connected to the top of the first water-blocking frame via a connecting hinge. A sliding ring seat and a return spring are movably fitted on the fixed horizontal axis. The sliding ring seat can rotate around the fixed horizontal axis. The sliding ring seat and the return spring are accommodated in the mounting groove. An operating handle is fixedly connected to the sliding ring seat. The two ends of the return spring abut against the side wall of the mounting groove and one side of the sliding ring seat, respectively. At least one positioning rod is fixedly provided on the sliding ring seat. The positioning rod is away from the return spring, extends and passes through the first water-blocking frame, and can selectively insert into the fixed vertical plate corresponding to its position. This utility model can achieve convenient two-section folding.

The utility model discloses an intelligent pedestal pan cover plate with a water quality purification component with a backflow prevention function. The water quality purification component comprises a base, a water inlet part and a water outlet part, wherein the base comprises a containing cavity, and the water inlet part and the water outlet part are communicated with the containing cavity; the purification module comprises a purification chamber, and a first water passing path and a second water passing path which are communicated with the purification chamber; the first water passing path is communicated with the water inlet part, and the second water passing path is communicated with the water outlet part; the anti-reflux structure comprises a sealing pressure-bearing piece and a one-way water outlet piece, and the sealing pressure-bearing piece is movably arranged at the connecting position of the first water passing path and the purification chamber and is communicated with the outside; the one-way water outlet piece is arranged on the water outlet part and used for limiting water flow from reversely flowing into the second water passing path. The connecting position of the second water passing path and the water outlet part is lower than the connecting position of the first water passing path and the purification chamber; according to the intelligent toilet cover plate with the water quality purification assembly, the problems that an existing filtering assembly is large in size, cannot be miniaturized, is arranged close to a water outlet unit, is poor in sanitation and is prone to being polluted are solved.

The utility model relates to the technical field of engineering machinery, in particular to an engineering machinery tail lamp fixing seat. The tail lamp fixing seat comprises a top plate and a bottom plate, the left end of the top plate is connected with a left upper side plate extending downwards, the right end of the top plate is connected with a right upper side plate extending downwards, an upper round hole is formed in the left upper side plate, an upper nut matched with the upper round hole is welded to the inner side of the left upper side plate, and an upper strip-shaped hole is formed in the right upper side plate; the right end of the bottom plate is connected with a right lower side plate extending upwards, the left end of the bottom plate is connected with a left lower side plate extending upwards, a lower round hole is formed in the right lower side plate, and a lower nut matched with the lower round hole and a lower strip-shaped hole of the left lower side plate are welded to the inner side of the right lower side plate; the left upper side plate is welded with the left lower side plate, and the right upper side plate is welded with the right lower side plate. And the installation precision of the tail lamp is improved.

The utility model discloses a novel light emitting photo frame refrigerator sticker, including refrigerator sticker photo frame main part, the bottom fixed setting of refrigerator sticker photo frame main part has conversion structure, the inside of refrigerator sticker photo frame main part is equipped with central processing structure, the top of central processing structure is equipped with light emitting structure, one side of light emitting structure is equipped with display structure, the utility model discloses a novel light emitting photo frame refrigerator sticker, and the functions such as photo frame display, refrigerator sticker adsorption, light emitting, identification decoration are integrated, as photo frame, can show the content such as photo, card, refrigerator sticker photo frame main part can be firmly adsorbed on the surface of refrigerator and other magnetically adsorbable surface, and the convenient display and use, the light emitting function can not only highlight the display content, but also can act as temporary lighting or atmosphere light source in dark environment, in addition, through the pin design, can also be worn as a badge on clothes, bag, satisfy the diversified use demand of user under different scenes, expand the applicable range.

The utility model discloses a telescopic material taking and placing device capable of 360 degree rotation, including rotary drive motor, hollow rotating platform, first bottom plate, second bottom plate, third bottom plate and fourth bottom plate, and first bottom plate is rotated any angle through rotary drive motor cooperation hollow rotating platform, through first servo motor can drive screw -nut drive structure action drive second bottom plate translation, and through the cooperation of gear and rack drive structure drive third bottom plate realizes the translation of double stroke, through second servo motor drive synchronous drive structure action drive fourth bottom plate translation, and fourth bottom plate detachable installation has the carrier for placing product. The utility model discloses through hollow rotating platform adjustment carrier's attitude to the angle position required, can realize 360 degree range arbitrary angle rotation, and can drive carrier and convey product to farther place, increase the moving stroke of product, satisfy the production need.

The utility model relates to the technical field of metal coatings, and discloses a hot brush coating device for metal profiles, which comprises an aqueduct mechanism, a coating mechanism is movably connected to the top side of the aqueduct mechanism, a protection mechanism is arranged on the rear side of the top end of the aqueduct mechanism, and a filtering mechanism is fixedly connected to the rear end of the coating mechanism. The rear side of the filtering mechanism is slidably connected to the top end of the protection mechanism, and the right end of the outer side of the aqueduct mechanism is fixedly connected with an operation mechanism. The smearing mechanism is exquisite and unique in structural design, the solution on the side wall can be effectively prevented from caking, it is guaranteed that the solution is evenly smeared on the surface of the workpiece, and the machining quality is improved. Besides, the filtering mechanism can exert certain elastic kicking on the side wall of the workpiece, the situation that the workpiece is tightly attached to the inner side wall of the smearing mechanism and the inner side wall of the filtering mechanism for a long time is effectively avoided, the risks of surface scratches and damage are reduced, the qualified rate of products is increased, meanwhile, the working efficiency is improved, and the production cost is reduced.

The utility model discloses a kind of high-purity diaphragm pressure gauges, including watch case, further include: lower connector, the lower connector is arranged at the bottom side of the watch case, the top end of the lower connector is located inside the watch case;Upper connector, the upper connector is located at the top of the lower connector, the gap between the lower connector and the upper connector constitutes accommodating cavity;Diaphragm, the diaphragm is arranged in the accommodating cavity.This application structure design is more ingenious, reasonable, can be installed very conveniently, more extensive, not restricted by space;Fan gear and transmission gear are engaged with each other, can guarantee instrument indication accurate and correct;High overvoltage protection device design can ensure not to be impacted by instantaneous overvoltage, and prolong the service life of high-purity diaphragm pressure gauge;All with the inner surface finish of medium contact component Ra≤0.5 μm, effectively protect high-purity system medium from pollution, completely applicable to ultrahigh pure field environment use.

The chain saw suspension test device provided by the present invention comprises a vertical plane rotation spring locating pin, a vertical plane rotation shaft, a sleeve, a horizontal rotation shaft, a horizontal rotation sleeve, a support rod, a horizontal plane rotation spring locating pin, a vertical plane rotation sleeve, a square shaft and a suspension sample nut, wherein the horizontal rotation sleeve is fixed to the top end of the support rod, and the horizontal rotation shaft is arranged in the horizontal rotation sleeve; the horizontal rotation sleeve is provided with a horizontal plane rotation spring locating pin; the upper end of the horizontal rotation shaft is connected to a horizontal sleeve, and the sleeve is provided with a vertical plane rotation spring locating pin; the inner end of the vertical plane rotation shaft is arranged in the sleeve, and the outer end is connected to the vertical plane rotation sleeve; the square shaft is connected to the vertical plane rotation sleeve, and the suspension sample nut is connected to the square shaft. The structural design of the present invention is exquisite, occupies less space, is easy and fast to install, and can reduce a large number of testers; at the same time, the test data obtained is also more accurate, which improves efficiency and cost.

The invention discloses a micro front-end filtering system for pyroelectric ion detection, which comprises a sealed box body, the box body is provided with an air inlet and an air outlet, and the box body is internally provided with a first partition plate and a second partition plate; the interior of the box body is sequentially divided into a settling cavity, a coarse filtering cavity and a fine filtering cavity by the first partition plate and the second partition plate, vent holes are formed in the first partition plate and the second partition plate, the coarse filtering cavity is filled with coarse filtering materials, the fine filtering cavity is filled with fine filtering materials, and three vertical baffles are arranged at the top of the settling cavity. The air purifier has an efficient multi-stage filtering mechanism, large particles in air can be effectively removed by integrating the filtering modes of a sedimentation structure, coarse filtering, fine filtering and the like, and especially particles larger than 10 nanometers can be efficiently filtered. The multi-stage filtration ensures the purity of gas entering the detection system, reduces the interference of impurities on pyroelectric ion detection, and significantly improves the sensitivity and accuracy of the extremely early equipment overheating detection system.

The utility model discloses a kind of batten compression devices for battery module assembly, including base, mounting seat, connecting plate, compression seat, compression assembly, multiple buffer assemblies and compression driving cylinder, compression driving cylinder is installed on base and the end of its push rod is fixed on mounting seat, and mounting seat is driven to lift by compression driving cylinder;Connecting plate is detachably connected to the bottom of mounting seat, compression seat is installed immediately below connecting plate and is connected between the two by buffer assembly;Compression assembly includes aluminium block and superior force rubber sleeve, aluminium block is placed in superior force rubber sleeve and is fixedly connected, and compression assembly is detachably connected with compression seat.The utility model is exquisite in structure design, can automatically press batten to battery module, and structure is not complex, reduce production cost and save space under the condition of meeting production rhythm, while compression assembly is convenient to replace, can adapt to the compression of batten of different specifications.

The invention discloses an ultra-wide and ultra-precise high-speed cutting unit and a cutting production line thereof, and belongs to the technical field of coiled material cutting, the ultra-wide and ultra-precise high-speed cutting unit comprises a frame, a cutting base plate mechanism, and a lining plate roller which is arranged at the lower half part of the frame and is provided with a transverse stretching along the cutting direction; the cutting knife mechanism is arranged on the upper half portion of the frame and provided with a cutting driving assembly installed on the top of the frame, and at least five precise leveling assemblies are in transmission connection with the lower portion of the cutting driving assembly in the cutting transverse direction at equal intervals. The lower portions of the precise leveling assemblies are jointly in transmission connection with a cutting knife assembly which extends in the cutting transverse direction and is opposite to the lining plate rolling wheels in an up-down parallel mode. The coiled material cutting device can rapidly, efficiently and accurately cut coiled materials, is exquisite and reasonable in structural design, convenient to disassemble and operate and good in stability, and improves the cutting quality and the cutting efficiency.

The invention discloses a soft tissue closing clamp for a superfine endoscope. The soft tissue closing clamp comprises a clamp body, a storage tube, a mandrel, a connecting sheath tube and a conveying structure. The clamp comprises a connecting base, a first clamping piece and a second clamping piece are arranged at the two ends of the front portion of the connecting base respectively, a first elastic piece and a second elastic piece are arranged on the two sides of the connecting base respectively, the rear portion of the clamp is sleeved with the storage pipe, a first side wing and a second side wing are arranged on the two sides of the rear portion of the storage pipe respectively, the mandrel is inserted into the rear side of the interior of the storage pipe, and a stepped shaft is arranged on the rear side of the mandrel. The connecting sheath tube is connected to the outer wall of the rear portion of the mandrel in a sleeving mode, a third opening groove is formed in the outer wall of the front portion of the connecting sheath tube, a third limiting elastic piece is arranged on the front side of the third opening groove, and the third limiting elastic piece is elastically connected with the side wall of the rear side of the step on the mandrel in a clamped mode. And the closing of the clamp and the separation of the storage tube and the connecting sheath tube are controlled by sliding the push-pull handle. The device is simple in structure and small in product size space, tissue can be closed through a superfine endoscope instrument channel, and the tissue can be pre-clamped again for multiple times.

The present invention relates to the field of flange forging technology, specifically to a forging device for a high-strength metal flange, comprising a machine base, on which a flange workpiece blank is placed through a mold, and on which a hydraulic hammer is driven by a hydraulic push rod to forge the flange workpiece blank. The forging device can use a bar-shaped electromagnet unit installed on a collection table to clean and collect magnetic debris located on the machine base, thereby avoiding the magnetic debris from affecting the processing process. In addition, in this solution, the screw motor not only drives the collection table to move along the guide rail, but can also indirectly use a matching speed increasing device to drive the bearing shaft to rotate, and indirectly cooperate with a power supply device to affect the process of the bar-shaped electromagnet unit sending the magnetic debris to the collection table, making the equipment structure design more sophisticated, solving the problem of the lack of rapid cleaning equipment for magnetic debris in the existing forging flange processing process, and can effectively improve the processing accuracy and flange product quality in the forging process.

The utility model belongs to hot runner injection moulding technical field, especially is related to a single valve is with easy scald material special hot nozzle structure. The outer wall surface of hot nozzle body is equipped with heater, thermocouple, the hot nozzle body is equipped with valve needle in the flow channel hole of integral gate bar, the integral gate bar includes integrally formed first section body, second section body, the first section body is screwed in the hot nozzle cavity of hot nozzle body, the second section body is located outside the hot nozzle cavity, the second section body is equipped with the copper ring of heat dissipation. The second section body of integral gate bar adds beryllium copper heat dissipation copper ring, its copper ring radial surface II, copper ring axial locating surface II, copper ring radial surface III and mould plate closely cooperate and contact, form high -efficient heat dissipation channel, can quickly export the heat of the gate place gathered, make the gate place glue temperature rapidly drop to the moulding temperature of adaptation, fundamentally solve the gate scald problem of low temperature easy scald material, effectively reduce product defective rate, greatly improve product forming quality and consistency.

The utility model discloses a cleaning device for gear shaft processing, which relates to the technical field of gear shaft processing, and comprises an upper barrel body, a lower barrel body, a protective cover and a reinforcing support frame, a cleaning control mechanism is arranged above the protective cover, an interval placing mechanism is arranged in the upper barrel body, and the lower barrel body is arranged above the protective cover. And an auxiliary cleaning and discharging mechanism is arranged in the lower barrel body. According to the cleaning device for gear shaft machining, the multiple sets of net cylinders are arranged and placed in a one-shaft and one-cylinder mode, so that the phenomenon that shaft pieces collide with one another and are damaged in the cleaning process of gear shafts is avoided, and the gear shafts in the cylinders are further subjected to abutting limiting through abutting assemblies; on the basis of guaranteeing stable placement of the gear shaft, the gear shaft is not prone to being damaged in the subsequent cleaning process, meanwhile, in the driving assembly, a small gear is used for driving a large gear to conduct transmission output, guarantee is provided for the transmission stability of the subsequent cleaning assembly in the mode of increasing the output torque of the device, the overall structural design is ingenious, and the practical effect is good.

The invention discloses a four-quadrant operation washing machine variable frequency driver which comprises a full-bridge booster circuit composed of a PFC power switch tube and a bus capacitor, the full-bridge booster circuit is further connected with an alternating current input voltage source, a high-frequency PFC inductor, a current sampling resistor, a motor driving power switch tube and a controlled motor equivalent model, and the full-bridge booster circuit, the high-frequency PFC inductor, the current sampling resistor, the motor driving power switch tube and the controlled motor equivalent model jointly form a complete circuit. Through the arrangement of the full-bridge booster circuit composed of the four PFC power switch tubes and the bus capacitor, a traditional diode rectifier bridge circuit is replaced, bidirectional flow of energy is successfully achieved, that is, the energy is fed back from the power grid side to the controlled motor equivalent model and from the controlled motor equivalent model to the power grid side, energy waste is avoided, and the energy efficiency is improved. Due to the fact that the washing machine can maintain a high speed reduction rate under the condition that the loss probability of electronic devices is not additionally increased, the operation efficiency of the washing machine is greatly improved, the structural design is exquisite and efficient, and the washing machine has great application prospects.

The utility model discloses a double-color whiteboard pen which comprises a pen container and a pen cap matched with the pen container, a standby pen bin is formed in the middle of the top end of the pen container, a threaded cylinder is fixedly arranged on the periphery of the top end of the pen container, a pen end sealing cover assembly is connected to the threaded cylinder in a threaded mode, and a U-shaped pen point frame is fixedly arranged at the bottom end of the pen container. The double-color whiteboard pen comprises a U-shaped pen point frame, a pen point blocking piece is fixedly arranged at the top of the inner wall of the U-shaped pen point frame, clamping and fixing holes are formed in the middles of the two sides of the U-shaped pen point frame, a double-color pen point assembly used for writing is arranged between the two clamping and fixing holes, and a locking rotary knob is connected to the top of one side of the U-shaped pen point frame in a threaded mode. After ink in the double-color pen point is used up, the double-color pen point is detached and directly replaced with the standby pen point, the ink does not need to be supplemented, the double-color pen point is easy and convenient to install and adjust, use is more convenient and flexible, and the double-color pen has the advantages of being exquisite in structural design, stable in ink supply and smooth and clear in writing.

The invention belongs to the technical field of composite material preparation, and particularly relates to a preparation method and application of a polyacrylonitrile / polydopamine nanoparticle multi-stimulation response composite material. The preparation method comprises the following steps: preparing acrylonitrile, glycidyl methacrylate and isobutyl methacrylate monomers under the action of an initiator to obtain epoxy group modified polyacrylonitrile, and adding furfuryl mercaptan for ring-opening reaction to obtain furan group modified polyacrylonitrile; then bismaleimide diphenylmethane is added for a dynamic cross-linking reaction; and finally, the mixture is compounded with polydopamine nanoparticles to obtain the polyacrylonitrile / polydopamine nanoparticle composite material. The composite material prepared by the invention is based on the glass transition temperature and the dynamic crosslinking conversion temperature, has infrared, heating, microwave and other triple stimulation responsiveness, not only can realize locally controllable multiple shape memory functions, but also has the characteristics of self-repairing and remodeling, and is wide in application prospect.

This utility model discloses an invasive thermal resistance tester for diving suit fabrics, relating to the field of fabric performance testing technology. It includes a base, a housing, a lifting mechanism, a connecting assembly, a testing mechanism, and a sample container. The base has a mounting groove on its top and a pressure regulating valve on its outer wall. The housing is mounted on the base, with a display screen and control buttons on its front wall. The lifting mechanism includes a cylinder assembly, a drive assembly, and a lifting platform. The connecting assembly is mounted on the bottom of the lifting platform and consists of an upper connecting plate and a U-shaped placement hook fixed to the center of its bottom. The testing mechanism is placed in the mounting groove and includes a test cylinder assembly, a pressure regulating head, a heating coil, and a water inlet. The sample container is suspended from the U-shaped placement hook, and the lifting mechanism drives it to extend into the test cylinder assembly, enabling accurate measurement of the thermal resistance performance of the diving suit fabric. This utility model has a reasonable structure, can simulate a real underwater environment, accurately measure the thermal resistance of diving suit fabrics, and provide reliable data for diving suit research and development.

The utility model discloses an encapsulation tool for a disc type motor stator. The encapsulation tool is used for carrying out epoxy encapsulation on the stator of a motor. The stator potting tool comprises a packaging body which is detachably and fixedly connected with a flange plate on a motor, and the packaging body and the flange plate are matched to form a containing space for a stator to be installed in a limited mode; the packaging body is provided with at least two potting channels, a through hole and an inner concave part. Inlets of the two potting channels are formed in the peripheral wall of the packaging body, and outlets of the two potting channels communicate with the containing space in the radial direction and the axial direction of the packaging body. The through hole is formed in the center of the packaging body and is used for installing the core column in a sealing manner; the inner concave part is formed in the second filling chamber; one end of the core column penetrates through the through hole and the stator and is in sealing fit with the flange plate, and the other end of the core column is connected with the packaging body; the stator filling and sealing tool provided by the utility model solves the problems of large filling and sealing difficulty, high cost, different quality and low flatness of the filled and sealed end face of the stator of the existing motor.

The utility model relates to the technical field of semiconductor manufacturing, in particular to a slicing device for wafer production, which comprises a bottom plate, the front part and the rear part of the upper end of the bottom plate are fixedly connected with a cutting device together, and the four corners of the lower end of the bottom plate are fixedly connected with supporting foot seats. The inner side faces of the four supporting foot bases are jointly and fixedly connected with a mounting plate, the upper end of the mounting plate is fixedly connected with a dust suction device, clamping outer frames are fixedly connected to the left portion and the right portion of the upper end of the bottom plate correspondingly, and screw rods are in threaded connection with the interiors of the two clamping outer frames correspondingly; the upper ends and the lower ends of the two screw rods are fixedly connected with hand wheels and clamping plates correspondingly. According to the slicing device for wafer production, compared with a traditional common mechanical transmission structure, the cutting device of the slicing device has the advantages that the positioning and moving precision of the cutting assembly is improved, the cutting wheel is always kept at the stable and accurate position in the cutting process, it is effectively guaranteed that the thickness of cut wafers is uniform, and the production cost is reduced.