54results about How to "Improve the tightness" patented technology

The present invention proposes a shoe injection molding device and injection molding method with simple structure, low production cost, improved shoe injection molding efficiency and improved injection molding quality, wherein the shoe injection molding device includes a shoe last and a bottom mold, the upper end surface of the bottom mold is provided with an injection molding groove downward, the shoe last can slide up and down and be arranged above the injection molding groove, the lower end of the shoe last can be embedded in the injection molding groove, the shoe last is provided with an injection molding through hole, the feed inlet of the injection molding through hole is provided on the peripheral side of the shoe last, and the plurality of discharge ports of the injection molding through hole are provided on the bottom surface of the shoe last. The shoe injection molding method includes S1, setting the shoe body and the shoe last; S2, pre-molding the left mold and the right mold; S3, lowering the shoe last; S4, molding the left mold and the right mold; S5, the stabilizing block and the injection molding head clamp the shoe last; S6, performing injection molding; S7, removing the finished shoe.

The utility model provides a forward and reverse junction box applied to an electromagnetic pushing system, comprising a box body and a box cover, the box body is respectively provided with a forward wiring hole and a reverse wiring hole; a wiring terminal is arranged in the box body; the wire tube is connected with the forward wiring hole or the reverse wiring hole; an electric wire in the electric wire tube is connected with the wiring end through the forward wiring hole or the reverse wiring hole; the box body is detachably connected with the box cover; a sealing part is arranged at the joint of the box cover and the box body; according to the utility model, the forward and reverse wiring holes are arranged, so that the space can be reduced during wiring, wires can be locked, and left and right reversing is facilitated; and the box body and the box cover are in threaded connection, and the sealing rings are arranged at the clamping grooves where the box body and the box cover are combined, so that water vapor cannot permeate. The use scene of the junction box is widened, and the service life of the junction box is prolonged.

The invention discloses a graphene solution mixing device, and the invention relates to the technical field of graphene solution preparation. The graphene solution mixing device, through the material spreading part, uses centrifugal force to make spring A drive a shaking plate to shake, so that graphene powder can be shaken out and discharged, and during the shaking process, spring B can stir the powder on the surface of the shaking plate, so that the blocky graphene powder is broken up, and the graphene powder is prevented from easily agglomerating in the solvent.

The present invention discloses a solar garden lamp and manufacturing equipment, which relates to the technical field of solar outdoor lamps, and aims to solve the technical problems of insufficient decorativeness and integration with nature of current solar garden lamps, including a lamp holder, a lampshade installed at the top of the lamp holder, and a solar lighting module installed on the lampshade; the middle of the top of the lampshade is provided with an arc top protruding upward, and the top edge of the lampshade is provided with an equidistant annular decorative part protruding upward, the decorative part is a mushroom-shaped structure, and the top edge of the lampshade is provided with an equidistant annular through-mounting holes. The present invention provides a mushroom-shaped decorative part, and the arc top is matched with the mushroom-shaped decorative part, so that the overall shape of the lampshade presents the appearance of a mushroom. The present invention optimizes the shape of the lampshade, so that it has a plant shape, and can be more natural when blending with the environment, and better integrated into the environment, so that the lamp is more decorative to the environment.

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

The utility model provides a kind of electric control cabinet wire harness waterproof joint convenient to assemble, it is related to waterproof joint technical field, comprising: joint main part;Cable is connected on joint main part, joint main part is rotated with connecting seat, thread is opened on connecting seat inner wall, first sealing gasket is adhered on connecting seat, and first sealing gasket is rubber material. First sealing gasket of stepped structure is adhered by multi-surface design, both enhance the adhering effect with connecting seat, reduce the probability of falling, and can be in extrusion state after joint main part and electric control cabinet are connected, the sealing degree between the two is greatly improved;At the same time, the second sealing gasket between connecting seat and nut can be realized by rotating nut Resistance, further strengthen the sealing performance of joint main part and connecting seat, double sealing design effectively improves the overall waterproof capacity of device, in addition, the auxiliary seat of rubber material is closely attached to the joint main part and cable connection, not only extra enhance the sealing of this part, but also can avoid external moisture intrusion.

The present invention discloses a smoke supply and exhaust duct structure of a smoke prevention and exhaust system and an installation method thereof. Through the L-shaped structural design of a rear panel and a front panel, pressure plate parts are arranged at both side ends of the front panel, and the pressure plate parts at both side ends of the front panel are respectively contacted with two inner side surfaces of the rear panel to form a smoke guide channel. A side vertical sealing gasket is arranged between the pressure plate part and the inner side surface of the rear panel, which can effectively prevent smoke from escaping from the smoke guide channel. The pressure plate part and the rear panel are fixedly connected to the shear wall by bolts. The rear panel adopts an L-shaped structure, which can ensure that the rear panel and the shear wall are fitted together, reducing the use area of ​​the building space, thereby reducing the cost. The pressure plate part of the front panel and the rear panel are fixedly connected to the shear wall by bolts, and there is no need to set up a pipeline circumferential clamp and a fixed bracket, which reduces the use area of ​​the outer side of the smoke supply and exhaust duct and can improve the installation strength of the smoke supply and exhaust duct. The structure is simple and easy to install.

The application relates to the technical field of image scanning, in particular to an image sensor which comprises a support, a frame body and an end cover connected to the end of the support and the frame body, the support is connected to the bottom of the frame body, the middle part of the frame body is penetrated along the X-axis direction, the two end parts of the frame body are sealed around in the YZ plane, a first chamber with a sealed periphery and a penetrated middle part is formed, the top of the frame body is provided with an opening which is connected with the first chamber in a penetrating mode along the Z-axis direction, a glass is mounted on the top opening of the frame body, and the end cover is detachably and sealingly connected with the end of the frame body through a sealing gasket. The application can effectively prevent external impurities such as dust and water vapor from entering the inside of the first chamber, avoids pollution or corrosion of the core components in the first chamber, greatly reduces the equipment failure risk caused by impurities, guarantees long-term stable operation of the equipment, and has the advantages of good sealing performance, high practicability and the like.

The utility model discloses a base station radio frequency power amplifier module sealed protection structure relates to base station module technical field, including protection upper box and heat abstractor, the below of protection upper box is provided with protection lower box, and the heat abstractor for buffering and heat dissipation sets up inside protection upper box, and heat abstractor includes partition, glue injection groove, installation slot, heat transfer sheet and fin, the inside of protection upper box is provided with glue injection groove to partition, and the surface of partition is provided with installation slot, the inside installation of installation slot has heat transfer sheet. This base station radio frequency power amplifier module sealed protection structure is separated by partition and is separated in protection upper box and protection lower box inside glue injection space, can still increase the firmness and the sealing degree of fin installation when increasing the protection box buffering effect after the glue injection in the glue injection groove interior, and installation slot is used for the installation of heat transfer sheet, and heat transfer sheet transfers the heat generated when module works to fin, and dissipates heat through fin.

The application discloses a threaded joint for a steel pipe and belongs to the threaded joint field. The threaded joint for the steel pipe comprises a joint body and a steel pipe body which is threadedly connected in the joint body, further comprises a locking sleeve which is symmetrically arranged on both sides of the joint body and sleeved on the steel pipe body, a sealing groove which is symmetrically arranged at both ends of the joint body, an extrusion ring which is symmetrically fixed on the locking sleeve and matched with the sealing groove, an airbag ring which is fixed in the sealing groove and matched with the extrusion ring, and a fixing assembly for fixing the joint body. The application effectively improves the sealing degree of the joint body and the steel pipe body and effectively improves the installation efficiency of the joint body and the steel pipe body.

The utility model discloses a single-stage corrugated pipe full vacuum isolation angle valve for semiconductor equipment, which relates to the technical field of semiconductor equipment and comprises a valve body and a reinforcing component, a control valve rod is vertically mounted in the valve body, and the reinforcing component for preventing looseness is arranged at the upper end of the control valve rod. And the reinforcing assembly comprises a hand wheel, connecting rods, a synchronous ring, hydraulic rods and a reinforcing frame, the connecting rods are installed at the front end and the rear end of the hand wheel, the lower ends of the connecting rods are connected with the synchronous ring, the hydraulic rods are arranged at the upper ends of the two sides of the synchronous ring, and the reinforcing frame is installed at the output ends of the hydraulic rods. According to the single-stage corrugated pipe full-vacuum isolation angle valve for the semiconductor equipment, a synchronizing ring synchronously rotates when a hand wheel rotates, so that a hydraulic rod and a reinforcing frame are located above the hand wheel, the hydraulic rod controls height position adjustment of the reinforcing frame through stretching and retracting, and the reinforcing frame is downwards clamped to the outer side of the hand wheel through the hydraulic rod; the hand wheel is prevented from loosening, and the hand wheel is pressed down at the same time.

The utility model discloses a lunch box for children, which comprises a cup body and a cover, a containing cavity is formed in the cup body, and the cover is detachably arranged on the cup body and seals an opening of the containing cavity. A protruding part is formed at the lower end of the cover and inserted into the containing cavity, a side exhaust channel and a bottom exhaust channel are formed in the protruding part, a partition plate is arranged between the side exhaust channel and the bottom exhaust channel, and air inlet holes communicated with the side exhaust channel and the bottom exhaust channel are formed in the partition plate in a penetrating mode. An elastic exhaust plug which is inserted into the bottom exhaust channel and covers the air inlet hole is arranged on the partition plate; a negative pressure state and a positive pressure state are formed between the cover and the cup body, and in the negative pressure state, the elastic venting plug is separated from the air inlet hole and opens the air inlet hole; and a handle is rotationally arranged on the cover. The function of eliminating negative pressure in the cup body is achieved through the side exhaust channel, the bottom exhaust channel and the elastic exhaust plug, the lunch box is convenient to move through the handle, and therefore the overall functionality and practicability are improved through few accessories.

The application discloses a sealable sealing strip assembly capable of directional heating in the field of rail car doors, which comprises a sealing strip and a door leaf, a mounting cavity is arranged in the sealing strip, a heating device and a heat insulation structure are arranged in the mounting cavity, the heating device is wrapped in the heat insulation structure, one side of the heating device is in contact with the sealing strip and faces the door leaf, a sealing rubber strip is mounted on the door leaf, the door leaf is forced to move, and the sealing rubber strip intermittently contacts a heat conduction surface of the sealing strip; in the application, the heat insulation structure and the heating device are arranged in the mounting cavity of the sealing strip, the heat insulation structure wraps around the heating device, only one side is left as a heat transfer port, the concentrated one-way conduction of heat energy is ensured, the position between the rubber strip of the car door and the sealing strip which may be iced is heated and kept warm during actual installation, the heat energy utilization rate is improved, the power burden of the vehicle is reduced, and the application is more energy-saving and environment-friendly.

The utility model relates to the technical field of lasers, and provides a novel laser, which comprises a shell, and a laser chip and a spherical lens which are arranged in the shell, the shell comprises a tube base and a shell cap arranged on the tube base in a covering mode. The shell cap is a full-transparent cap; the laser chip and the spherical lens are respectively arranged above the tube seat; the emergent end of the laser chip faces the spherical lens; the laser chip is electrically connected with the plurality of tube legs; and a plurality of pipe legs extend out of the shell from the pipe seat. According to the utility model, a product side surface light emitting and light path internal coupling mode is adopted, which is convenient for use and assembly in a finished product.

The utility model discloses an assembly type external wall panel, which relates to the field of building materials and comprises a wall panel, and a connecting groove I is formed in the front side surface of the wall panel. The connecting groove I and the connecting groove II are respectively formed in the front side surface and the rear side surface of the wallboard, so that the connecting groove I and the connecting groove II of two adjacent wallboards can be attached when the wallboards are mounted, and the attaching degree and the sealing degree of the two adjacent wallboards are effectively improved; when a first connecting groove and a second connecting groove of two adjacent wallboards are attached, a second sealing plate on the adjacent wallboards can push a push plate to move backwards to be inserted into a first sealing groove, and when the push plate moves backwards, the first sealing plate is pushed through a first toothed plate, a gear and a second toothed plate to move forwards to be inserted into a second sealing groove formed in the adjacent wallboards; the sealing degree between the adjacent wallboards is further improved, the first sealing plate does not need to be driven by manual operation to move, then the installation steps of the device are simplified, and the installation efficiency is improved.

The utility model belongs to the field of insect condition forecasting lamps, and particularly relates to an insect condition forecasting lamp based on the internet of things. The lamp tube is arranged on the insect falling funnel and is used for attracting insects; the impact screen is arranged on the lamp tube and used for being impacted by insects; the lamp body is arranged at the bottom of the insect falling funnel, and a light sensor, a leakage protector and a touch display screen are arranged on the lamp body; the insect receiving box is arranged at the bottom of the lamp body and used for collecting insects; the ground cage is arranged at the bottom of the lamp body; the insect killing structure is arranged in the lamp body and used for killing insects. A 2000W industrial camera, a light supplementing lamp and a cleaning structure; the upper bin door and the lower bin door are of a machining part structure, the matching precision degree is increased, it can be guaranteed that rainwater can be effectively drained, it can be guaranteed that insects cannot be brought out when the push rod motor drives the upper bin door and the lower bin door to move, and meanwhile the matching precision degree is good; the relative sealing performance of the heating bin when the upper bin door and the lower bin door are closed is effectively guaranteed, and the heating temperature rise rate is increased.

The utility model discloses a high temperature and high humidity reverse bias test recovery device for a semiconductor device, which comprises a base, an experiment box fixedly arranged at the upper end of the base, a sealing assembly arranged at the front end of the experiment box and used for improving the sealing performance of the experiment box, and a temperature control assembly arranged at the front end of the experiment box, the heat dissipation assembly comprises a through groove formed in the left side of the experiment box, a groove is formed in the left side of the experiment box, a rotating plate is rotatably connected into the groove, a sliding groove is formed in the right side of the experiment box, a baffle is slidably connected into the sliding groove, and a limiting groove is formed in the right side of the sliding groove; the right side of the baffle is rotationally connected with a fixing block. The high-temperature and high-humidity reverse bias test recovery device for the semiconductor device disclosed by the utility model has the effects of improving the heat dissipation rate of the experiment box, facilitating the rapid proceeding of the next experiment, sucking out the moisture in the experiment box, and preventing the moisture from being condensed into water to damage the semiconductor device.

The utility model relates to the technical field of hydraulic cylinders, and discloses a connecting structure of a hollow piston rod and a piston for a hydraulic cylinder, which comprises a middle body, the piston rod and a piston body, a containing cavity with an opening at the tail end and used for containing the piston rod is fixedly arranged in the piston body, and two positioning blocks for limiting the angle of the piston rod are arranged on the inner end face of the containing cavity. An annular locking groove is formed in the piston rod, a set of threaded locking holes are formed in the annular locking groove, each threaded locking hole is provided with a fastening bolt for limiting the position of the piston rod in the containing cavity, the end of the piston rod is in threaded connection with the middle body, and the middle body is tightly attached to the containing cavity. When the piston is used, the piston rod is in threaded connection with the middle body, the middle body conducts multiple sealing on the connecting position of the through cavity and the containing cavity, through the arrangement of the stop ring, on one hand, the relative position of the piston rod and the middle body can be effectively limited, and on the other hand, the sealing degree in the through cavity and the coaxiality of the piston rod and the piston body can be effectively improved.

The utility model provides a water fender for a water conservancy project, which relates to the technical field of water conservancy project materials and comprises a horizontal plate, a clamping groove is formed in one side of the horizontal plate, a clamping block is fixedly connected to one side of the horizontal plate, an empty groove is formed in the upper surface of the horizontal plate, and positioning rods are fixedly connected to the two ends of the empty groove. The device has the advantages that the fixing barrel is connected with the vertical plate through the connecting block, when the water level on one side of the vertical plate rises, the fixing barrel connected with one side of the vertical plate is fixed through the positioning rod, the weight and thrust are increased, the attaching degree of the bottom of the vertical plate to the surface of the horizontal plate is increased by means of the weight of water, and the device becomes stable; the stability of the whole structure is good, the clamping block on one side of the horizontal plate is connected with the clamping groove in a clamped mode, the front blocking groove in one side of the vertical plate is clamped with the rear blocking blocks of other water baffles, the rear blocking groove in one side of the vertical plate is clamped with the front blocking blocks of other water baffles, the sealing degree between the water baffles is increased, and the flood prevention capacity and the waterproof capacity are improved.

The utility model discloses a filtering device for coating processing, which comprises a base, the top ends of the two sides of the base are fixedly connected with fixing frames, a device main body and a material collecting barrel are sequentially arranged between the fixing frames from top to bottom, and the top of the device main body is provided with a cover plate. A dismounting and mounting assembly facilitating supporting and fixing is arranged outside the device body. According to the filtering device for coating processing, by arranging an outer supporting baffle, a limiting rod, a connecting sleeve ring, an inserting plate and a mounting groove, the device body is prevented from sliding off, the stability of the device body is improved, the device body can be conveniently and regularly detached and cleaned, and the cleanliness of the interior of the device body is kept; the problems that different coatings are attached to the inner wall of the filtering barrel after being used for a long time, subsequent use is reduced, the connecting force between the filtering barrel and the device is limited, the filtering barrel is prone to falling off, and the filtering barrel is damaged are solved.

The invention discloses a solar courtyard lamp and manufacturing equipment, relates to the technical field of solar outdoor lamps, and aims to solve the technical problem that a current solar courtyard lamp is insufficient in decoration and natural integration. The solar courtyard lamp comprises a lamp holder, a lampshade mounted at the top end of the lamp holder and a solar lighting module mounted on the lampshade; an arc top protruding upwards is arranged in the middle of the top end of the lampshade, decorative parts protruding upwards are annularly arranged on the edge of the top end of the lampshade at equal intervals, the decorative parts are of mushroom-shaped structures, and through mounting holes are annularly formed in the edge of the top end of the lampshade at equal intervals. The mushroom-shaped decoration part is arranged, and the arc top is matched with the mushroom-shaped decoration part, so that the overall shape of the lampshade is in a mushroom shape. The appearance of the lampshade is optimized, so that the lampshade has a plant shape, and the lampshade can be more naturally and better fused into the environment when being fused with the environment, so that the decoration of the lamp to the environment is better.

The invention provides a sterilization bag sealer for a microbiological laboratory, and relates to the field of sterilization bag sealers. The sterilization bag sealer for the microorganism laboratory comprises a sealer body, a sealing groove is formed in the front side of the sealer body, an electric push rod is fixedly connected to the upper side of the sealer body, a sealing plate is fixedly connected to the output end of the lower side of the electric push rod, and a fixing plate is fixedly connected to the front side of the sealer body; and a sealing unit is arranged on the upper side of the fixing plate, a second motor is fixedly connected to the upper side of the fixing plate, an output shaft is fixedly connected to the output end of the second motor, and a containing plate is fixedly connected to the upper end of the output shaft. And by arranging an output shaft and a placing plate, the position of the sterilization bag on the placing plate is conveniently controlled to be adjusted, a first rotating disc is controlled to rotate, pressing rollers on the upper side and the lower side are controlled to be close to each other, the sealing position of the sterilization bag is pressed downwards again through the pressing rollers, the sealing position of the sterilization bag is conveniently flattened, wrinkles are avoided, and the sealing performance is prevented from being reduced.

The utility model provides a manhole door of an electric dust collector, which comprises a manhole door seat, an inner hole and an outer hole are arranged on the manhole door seat, an inner door is arranged at the inner hole, an outer door is arranged at the outer hole, the inner door and the outer door are respectively hinged with the manhole door seat, an inner door frame is arranged at the inner hole, the edge of the inner door is abutted against the inner door frame, and the inner door and the outer door are respectively hinged with the manhole door seat. An outer door frame is arranged at the position of the outer hole, the edge of the outer door abuts against the outer door frame, a plurality of pressing rods are fixed to the inner side of the outer door, the ends, away from the outer door, of the pressing rods abut against the inner door, a plurality of through holes are formed in the edge of the outer door, a plurality of screw holes corresponding to the through holes are formed in the outer door frame, and bolts are arranged in the through holes. And the bolt penetrates through the through hole. According to the utility model, the inner door and the outer door are arranged, and the manhole is sealed through the two doors, so that the sealing degree can be effectively improved; external force is applied to the inner door through the pressing rod of the outer door, so that the inner door is closed, the inner wall can be closed only by closing the outer door, and the operation mode is simple and convenient.

The utility model relates to a tobacco wheel body mechanism, a cigarette air suction chamber and cigarette rolling and connecting equipment, the tobacco wheel body mechanism is used for installing a cut tobacco suction belt, the tobacco wheel body mechanism comprises an installation shaft (1), a rotation shaft (2) and a rotation shaft (3), the installation shaft (1) comprises a shaft body (11), and the shaft body (11) extends in the preset direction (x); the wheel body (2) is installed at the first end of the shaft body (11), the wheel body (2) and the shaft body (11) are coaxially arranged, and the cut tobacco suction belt is installed on the peripheral face of the wheel body (2); the bearing (3) is connected between the first end of the shaft body (11) and the wheel body (2); and the sealing assembly (4) is arranged on the side, away from the second end of the shaft body (11), of the wheel body (2), and the sealing assembly (4) is configured to form a sealing area for containing the bearing (3) with the wheel body (2).

The utility model discloses a kind of double sealing layer anti-leakage structures for rain sewage pumping station gate, belong to rain sewage pumping station gate sealing technical field.The structure is aimed at the problem that the existing gate sealing device is prone to wear, aging or failure due to single sealing layer, which increases the risk of leakage, and improves the sealing reliability by adopting double sealing layer design.The technical scheme points include: gate frame, gate plate movably arranged in the frame channel, and main sealing assembly and auxiliary sealing assembly respectively installed on the front and back of the frame;The main sealing assembly is located on the side of the frame facing the water flow direction;The auxiliary sealing assembly is located on the side of the frame facing away from the water flow direction;Form double sealing barrier.The structure is mainly used for rain sewage pumping station gate system, can effectively prevent sewage or rainwater leakage, improve the safety and stability of pumping station operation, reduce maintenance requirements, and prolong the service life of equipment.

The invention relates to the technical field of lock catches, and discloses a refrigerator foaming door multifunctional integrated hidden lock catch which comprises a lock catch movable part installed on a refrigerator door body and a lock catch fixed part installed on a refrigerator main body, the lock catch movable part comprises a closed box, and the closed box is installed in the refrigerator door body; the side facing the lock catch fixing piece and the front face of the closed box are flush with the surface of the refrigerator door body, the lock catch fixing piece is installed in the refrigerator body, and a panel is arranged on the front face of the closed box. The lock catch moving part is installed in the refrigerator door body in an embedded mode, the lock catch is installed in a hidden mode, the attractiveness is improved, the lock catch locking position is designed in a closed mode through cooperation of the closed box and the panel of the lock catch moving part, the situation that a foaming material of the refrigerator door body influences the lock catch structure can be avoided, the hidden box is further arranged on the lock catch moving part, and the lock catch moving part is more attractive. Functions of the padlock and the handle are integrally arranged, functionality is enhanced, and the door body is more convenient to open while the sealing degree of the refrigerator door body is improved through the padlock.

The utility model discloses a vacuum environment dual-drive pipe clamp valve which comprises a valve shell, an elastic pipe core arranged in the valve shell, a first pushing mechanism and a second pushing mechanism, the first pushing mechanism and the second pushing mechanism are arranged on the two sides of the valve shell respectively, the elastic pipe core penetrates through the valve shell, and the two ends of the elastic pipe core are fixedly connected to the valve shell; movable rods of the first pushing mechanism and the second pushing mechanism penetrate through and are slidably connected to the outer wall of the valve shell, and the movable rods of the first pushing mechanism and the second pushing mechanism can move towards the elastic pipe core and extrude the elastic pipe core; and the valve shell is provided with a vacuum suction port. According to the utility model, the service life of the pipe core of the pipe clamp valve in the vacuum environment can be prolonged, the use cost of the pipe clamp valve is reduced, and the accuracy of the conveying quantity of the pipe clamp valve is improved, so that the pipe clamp valve can adapt to injection of high-viscosity and high-sensitivity explosives and powders in the vacuum environment.

The invention relates to the technical field of low-frequency noise measuring equipment, and discloses portable weak electric signal low-frequency noise testing equipment which comprises a shielding box, the shielding box is composed of a box body and a cover body, the box body and the cover body are each composed of an outer layer plate a and an inner layer plate b, an interlayer space is formed between the outer layer plate a and the inner layer plate b, and the interlayer space is connected and reinforced through a plurality of reinforcing columns. When the box body and the cover body are combined, the box body interlayer space is communicated with the cover body interlayer space; a handle assembly is fixedly connected to the top of the cover body, an air exhaust mechanism is arranged in the handle assembly, the air exhaust mechanism communicates with the interlayer space of the cover body, and the air exhaust mechanism is used for exhausting air in the box body and the interlayer space of the cover body; the box body and the cover body are both composed of the outer layer plate a and the inner layer plate b, so that the box body and the cover body form an interlayer space, the interlayer space of the box body and the cover body can form a tending vacuum layer through the air exhaust mechanism, and a good isolation effect on low-frequency noise can be achieved through the vacuum layer.

The utility model discloses a stone paint storage barrel, and relates to the technical field of paint storage. The garbage can comprises a can body, a can cover is installed on the top of the can body in a threaded mode, a circular containing groove is formed in the top of the can body, and a sealing air bag is arranged in the circular containing groove. By rotating the barrel cover again, the bottom end of the outer wall of the barrel cover gradually gets close to and begins to extrude the annular air bag, it is worthy of noting that the size of the annular air bag is larger than that of the sealed air bag, the amount of air stored in the annular air bag is larger, and after the annular air bag is extruded, the internal air reversely passes through the multiple air communicating pipes and flows to the sealed air bag again; the middle part of the sealing air bag is still extruded by the sealing plate, and the expanded sealing air bag can only extend towards the two sides of the sealing plate and is tightly attached to the two ends of the sealing plate, so that a tight barrier is formed at the joint of the barrel cover and the barrel body, and external air is effectively prevented from entering the barrel body; and the reaction with the stone coating in the barrel is avoided.

This application discloses a cleaning robot and its application, including a dust collection box, a base station, and a cleaning system. The cover of the dust collection box can switch between a first state and a second state. When the dust collection box is in the dust collection state, the cover is in the first state, and the garbage collected by the cleaning robot enters the dust collection chamber through the dust collection port. When the dust collection box is in the dust removal state, the cover is in the second state, which increases the sealing of the dust collection chamber, and the garbage in the dust collection chamber is discharged through the dust removal port. This application can use a fan to clean the garbage in the dust collection box. Especially for the case where the dust collection box of this application is an open-type dust collection box, this application allows the dust collection box to be automatically cleaned by fan suction, which is beneficial for realizing the automatic cleaning of open-type dust collection boxes.