18results about How to "Prevent secondary use" patented technology

The visual Eustachian tube examination and treatment device with the suction function comprises an Eustachian tube endoscope, a sheath tube indexing and transposition locking assembly and a balloon assembly, wherein the balloon assembly is arranged between the sheath tube indexing and transposition locking assembly and the Eustachian tube endoscope. The sealing joint assembly of the balloon assembly is installed in the sheath tube indexing transposition locking assembly, the assembly is located outside the human body in the treatment process, the size of the sealing joint assembly can be properly enlarged according to the technological conditions, and the manufacturing difficulty of the balloon assembly is reduced; by changing the length of the sealing joint, the combination of the balloons with different lengths and the same endoscope is realized, and the endoscope is used for treating different patients; according to different relative positions of the treatment ear and the doctor caused by the lying position of the patient, the angle of the sheathing canal and the endoscope is adjusted; the balloon hollow tube is located in the sheath tube and forms a suction channel with the sheath tube, the end of the sheath tube is a suction inlet, and a suction tube externally connected with a negative pressure suction device is arranged on a sealing connector assembly in the balloon assembly, so that the nasal cavity aspirator has the suction function of cleaning hydrops in the nasal cavity.

This invention relates to an automatic screw extrusion device for an air compressor, comprising an extrusion device body whose operation is controlled by a control system. The extrusion device body contains an upper positioning mechanism and a lower positioning mechanism. The upper end of the upper positioning mechanism is equipped with a variable-diameter telescopic oil pump. Based on the outer diameter of different screw models and the inner diameter of the screw bearing, the appropriate telescopic setting is selected, allowing the tip of the oil pump to penetrate deep into the compressor head component during screw extrusion. This prevents damage to the bearing and compressor head component while applying continuous force. The upper positioning mechanism includes adjustable limit baffles for positioning the compressor head component; the horizontal position of these baffles affects the extrusion effect, ensuring the horizontal state of the adjustable limit baffles on both sides. The lower positioning mechanism includes a screw guide and fixing device for positioning and protecting the screw during continuous, slow extrusion, preventing screw wobbling and impact, and reducing damage caused by component disassembly.

The utility model relates to a handheld radioactive pollutant removing device, which belongs to the technical field of radioactive pollutant removing devices and comprises an operation component, a decontamination roller and an automatic film changing mechanism, and the decontamination roller is rotatably connected onto the operation component; the automatic film changing mechanism comprises a motor, an old film cylinder and a new film cylinder wound with a decontamination adhesive film, and the motor is fixed on the decontamination roller; the old film cylinder and the new film cylinder are arranged in the decontamination roller at intervals along the axis of the decontamination roller, the old film cylinder is rotationally connected into the decontamination roller, and one end of the new film cylinder is fixed to the motor. According to the utility model, the motor is used for driving the new film cylinder to rotate, and the free end of the decontamination adhesive film penetrates through the long-strip-shaped hole around the decontamination roller and penetrates into the long-strip-shaped hole to be fixed at the peripheral side end of the old film cylinder, so that the decontamination adhesive film can be automatically replaced after the decontamination adhesive film is adhered to remove radioactive sediment pollution, and therefore, manual intervention and manual contact are reduced, and the production efficiency is improved. And meanwhile, secondary use of the decontamination adhesive film is avoided, and the cleaning efficiency and the cleaning effect are improved.

The utility model relates to the technical field of strain production, and discloses a selenium-rich enzyme strain production device which comprises a workbench and a seed production box fixedly installed at the top of the workbench, a door is rotatably installed on the front side of the seed production box through a hinge, a perspective plate is arranged on the front side of the door, two operation assemblies are fixedly installed on the front side of the door, and the two operation assemblies are fixedly installed on the front side of the door. A handle is fixedly installed on the front side of the door, a first air inlet pipe is arranged at the top of the seed production box, and an air outlet pipe is arranged at the top of the seed production box. According to the selenium-rich enzyme strain production device, through the design of the first ultraviolet lamp and the second ultraviolet lamp, when a strain basin is put into the seed production box, the interior can be disinfected comprehensively through the first ultraviolet lamp and the second ultraviolet lamp, and it is avoided that bacterial residues affect normal strain production; the limiting frame can be fixedly installed, so that a seed production fence is placed above the semicircular clamping groove, the supporting effect can be achieved, and a seed production basin can be conveniently placed.

This application provides a wall plastering waste material device and its usage method. The wall plastering waste material device includes a frame, a first movable base, a mortar nozzle, a material storage component, a second movable base, a scraper, and a slurry cleaning component. The frame is connected to an external lifting component and moves up and down under the drive of the external lifting component. The first movable base is movably connected to the frame. By setting the material storage component below the mortar nozzle and integrating the slurry cleaning component with a scraper on the first movable base, during the spraying and leveling operations, the scraper of the slurry cleaning component is inserted into the material storage component. As the first movable base moves left and right, it can actively and continuously scrape out and discharge the excess mortar collected in the material storage component, thereby realizing the collection and discharge of mortar, avoiding the retention and caking of waste material, and enabling the excess mortar to be efficiently recycled and reused. This improves the utilization rate of the mortar in the wall plastering waste material device and reduces material costs.

The utility model belongs to the field of spring machining, particularly relates to an end face spring grinding device for spring machining, and aims to solve the problems that in the prior art, in the grinding process, a large amount of chippings and dust are prone to being generated, and grinding efficiency is affected, the following scheme is provided, the end face spring grinding device comprises a base, and a sweeping mechanism is arranged on one side of the base; the device comprises a base, a support is fixedly connected to the top of the base, supporting legs are fixedly connected to the four corners of the bottom side of the base, two fixing blocks are fixedly connected to the top of the base, a dust collection mechanism is arranged on one side of one of the two fixing blocks, and push rod motors are fixedly connected to the inner walls of the bottom sides of the two fixing blocks. And output shafts of the two push rod motors are fixedly connected with the same top plate, the top of the top plate is fixedly connected with a first motor, dust generated in the polishing process can be collected, sweeping can be conducted after polishing is finished, and the working efficiency is improved.

The invention belongs to the technical field of seawater fuel cell power generation, and particularly relates to a water circulation fuel cell power system based on seawater hydrogen production and a ship. Comprising a seawater pretreatment unit used for receiving seawater and removing impurities in the seawater; the fuel supply and mixing unit is connected with the seawater pretreatment unit and is used for mixing NaBH4 and seawater to form hydrogen fuel; the hydrogen fuel cell unit is connected with the fuel supplying and mixing unit and is used for generating hydrogen through hydrolysis reaction, converting the hydrogen into direct current and generating circulating water; the circulating unit is respectively connected with the hydrogen fuel cell unit and the fuel supplying and mixing unit and is used for feeding circulating water into the fuel supplying and mixing unit; and the power unit is connected with the hydrogen fuel cell unit and used for providing power for the ship. The seawater directly participates in the hydrolysis reaction of the sodium borohydride to start the system, and the water generated by the fuel cell is recycled, so that a'water-hydrogen-electricity 'closed loop is realized, and the energy density and the space utilization rate of the ship are improved.

The utility model relates to the field of transformer winding, especially a main shaft device and winding bushing machine, still contain the line pressing mechanism, the main shaft mechanism contains the main shaft seat, and the line pressing mechanism sets up on the main shaft seat, and the line pressing mechanism contains the line pressing fixture and makes the line pressing fixture have the linear movement mechanism of multidimensional change, and the line pressing fixture has the bottom that resists with the copper wire, and at least has two perpendicular guide side surfaces, the utility model makes new design on the main shaft mechanism, is the mechanism that is exclusively used on the main shaft mechanism, and the output end of this line pressing mechanism, that is, the line pressing fixture, is according to the linear movement mechanism on the main shaft mechanism as the driving source, and the design that copper wire is made, and the calibration of copper wire is adjusted and is to use the bottom of line pressing fixture to press the wire head of the wire arrangement, and then pull the copper wire part for winding in the lead, force the copper wire corresponding to the part of striding wire to be attached in the guide side surface, to obtain a vertical striding wire part.

The utility model relates to injection device field, concretely is a kind of device and syringe for syringe needle concealment and protection, including outer tube, protection cylinder, rotating ring, compression ring, elastic element, inner tube, injection element and push rod;One end of protection cylinder is sequentially provided rotating ring, compression ring and inner tube;Compression ring and rotating ring abutment drive rotating ring rotation, and then make protection cylinder move along the sliding restraint groove of rotating ring inside;Elastic element realizes the reset of protection cylinder;Injection element is inserted into protection cylinder after passing through inner tube, compression ring and rotating ring, and push rod is connected with injection element.Push rod drives compression ring to press down and make rotating ring relative to protection cylinder realize rotation, and then make protection cylinder relatively realize axial sliding and rotation on the restraint groove on rotating ring under the action of elastic element until trigger locking.Needle is concealed in protection cylinder in process, weakens the psychological influence to patient and effectively protects needle, and the locking of needle can also avoid the secondary use of syringe and accidental touch to stab others.

An automatically adjustable and moving formwork system and an operation method thereof, comprising a formwork system, a steel frame system, a hydraulic system and an electrical system. The formwork system comprises an inner wall formwork, an outer wall formwork, a bottom formwork and an inner wall top plate formwork; the steel frame system comprises an inner wall steel frame system and an outer wall steel frame system, the inner wall formwork, the inner wall top plate formwork and the inner wall steel frame system constitute an inner wall formwork; the outer wall formwork and the outer wall steel frame system constitute an outer wall formwork, a casting cavity is formed between the inner wall formwork and the outer wall formwork, and the electrical system controls the demoulding and movement of the inner wall formwork. Good integrity. One-time pouring of concrete can reduce one construction joint, the structural integrity is better, and the concrete appearance quality is better; the through-wall pulling process is free, the structural wall has no through-wall holes, and the structural appearance and waterproof performance are better.

The invention relates to the technical field of anti-counterfeiting labels, and in particular to an anti-counterfeiting label structure, comprising an adhesive layer, a tearing component and an anti-counterfeiting layer, wherein the tearing component comprises a strong adhesive layer, a dividing strip, a paper label and a protective component, wherein the anti-counterfeiting layer has a placement groove, and the dividing strip has an easy-tear line; the strong adhesive layer and the adhesive layer have different viscosities, and the dividing strip is located between the two; the protective component is used to prevent the easy-tear line from being disconnected during installation; when a counterfeiter wants to tear off the anti-counterfeiting label for secondary use, when the dividing strip is torn, due to the different viscosities of the strong adhesive layer and the adhesive layer, the easy-tear line will be torn first, causing the dividing strip to break, and the paper label fixed on the dividing strip will also break, and anti-counterfeiting is achieved by the cooperation of the anti-counterfeiting layer and the paper label, and when the anti-counterfeiting label is to be torn off for secondary use, the paper label will break, thereby solving the problem that the anti-counterfeiting label is only attached to a product through the adhesive layer, is easily torn off and attached to a counterfeit product for secondary use, and the anti-counterfeiting effect is greatly reduced.

The utility model discloses a label sticker with a double-sided anti-counterfeiting mark, which comprises a waterproof layer, an anti-counterfeiting layer and an anti-counterfeiting layer, the waterproof layer is made of two layers of plastic films, and an adhesive tape is arranged on the waterproof layer and is used for being stuck on the surface of a commodity; the anti-counterfeiting mark layer is formed by printing a special anti-counterfeiting bar code on the surface of synthetic paper, and the anti-counterfeiting mark layer is arranged in the middle of the waterproof layer; the gold stamping layer is used for stamping an anti-counterfeiting pattern on a specific position of the anti-counterfeiting mark layer by adopting a gold stamping technology; and the anti-counterfeiting layer is adhered to the side, provided with the adhesive tape, of the waterproof layer, and recognizable anti-counterfeiting codes are printed on the anti-counterfeiting layer. By arranging the anti-counterfeiting mark layer with the gold-stamped surface, the gold-stamping anti-counterfeiting effect is added on the basis of the anti-counterfeiting of the special anti-counterfeiting bar code, so that the anti-counterfeiting effect is better; by arranging the anti-counterfeiting layer which can be seen after the label is torn, the front side and the back side of the trademark have the anti-counterfeiting effect and can be seen after the label is torn, and secondary use of the label is avoided.

The present application provides a medical observation system and its control device, control method, and endoscope connecting line. The medical observation system includes an endoscope, a host, and a connecting line electrically connecting the endoscope and the host; the method includes: when the host and the endoscope are electrically connected, obtaining the electrical connection time between the endoscope and the connecting line; when the host and the endoscope are in an electrically connected state, based on the electrical connection time, updating the electrical connection time between the endoscope and the connecting line; when the electrical connection time reaches the preset limit usage time, cutting off the communication connection between the endoscope and the host. The present application reduces the risk of the endoscope being used a second time.

The invention discloses a stab-proof injection needle sheath structure, comprising a needle seat and a needle body, a sheath structure connected to the needle seat, the sheath structure comprising a base, an outer coat, and an inner core, the base being connected to the needle seat, and the outer coat being connected to the base through a hinge structure; the outer coat and the inner core are respectively provided with a needle body through groove and an inner needle body through groove, a positioning rotating hole is provided at the end of the outer coat, a closed positioning groove, an enabled positioning groove, and a protective positioning groove are respectively provided on the inner side of the positioning rotating hole, the inner core is inserted into the positioning rotating hole and extends out of the outer coat, an elastic positioning claw is provided at the end of the inner core, and the inner core rotates in the outer coat to enable the elastic positioning claw to realize positioning buckles with the closed positioning groove, the enabled positioning groove, and the protective positioning groove, respectively, and the closed positioning groove and the enabled positioning groove are respectively provided with a rotating sliding surface on one side thereof. The invention effectively avoids stab injuries to medical staff and other personnel after use, and effectively avoids secondary use, thereby improving the safety of use.

The utility model relates to the technical field of injectors, in particular to an injector capable of preventing secondary use, which comprises a needle cylinder, a needle head, a feeding assembly and a protection assembly, one end of the needle cylinder is provided with an insertion tube, the needle head is connected with the insertion tube in an inserted mode, the other end of the needle cylinder is provided with the feeding assembly, the feeding assembly comprises a piston, a push rod, a push plate and fins, and the fins are connected with the needle head in an inserted mode. According to the injector capable of preventing secondary use, the protection groove of the end cap accommodates the needle head, the clamping block is clamped into the clamping groove under the action of the elastic piece (the spring and the telescopic rod are combined, buffered and stabilized), the end cap and the needle cylinder are firmly locked, the injector can be taken down only when the structure is damaged, and secondary use of the injector is effectively prevented. And the inner side plate of the end cap is attached to the needle head, so that the needle head is prevented from shaking, and people are prevented from being punctured during collection.

The invention discloses a semi-automatic glue bottle tail glue cleaning mechanical structure, comprising a base, a rotating circular plate mechanism is arranged on the base, a plurality of glue bottle installation clamps are evenly distributed on the rotating circular plate mechanism around the central circumference of the rotating circular plate mechanism, an extrusion assembly for extruding the glue bottle is arranged in the glue bottle installation clamp, a cam control mechanism for controlling the extrusion assembly located below to perform an extrusion state is arranged on the base, a side push assembly for side-pushing the glue bottle is arranged in the glue bottle installation clamp, and the semi-automatic glue bottle tail glue cleaning mechanical structure can continuously extrude the tail glue of a plurality of glue bottles, and the continuous extrusion efficiency is higher, the waste of tail glue is reduced, and the utilization rate of tail glue is improved. The glue bottle after extrusion can be automatically ejected, manual operation is reduced, the input of labor is reduced, the work efficiency is improved, and the secondary utilization of tail glue is realized. The structure is simple and the use is convenient.

The invention provides a hard inclined rock surface cast-in-place pile drilling method, and relates to the technical field of constructional engineering. The hard inclined rock surface cast-in-place pile drilling method comprises the steps that the soft rock stratum position of a pile hole is determined; a first excess steel bar of a pile foundation reinforcement cage main bar is inserted into the soft rock stratum in the axial direction of a pile hole, and a first layer of rubble is backfilled; a percussion drill is used for pressing the first excess steel bars and the first layer of rubbles into the soft rock stratum; second excess material reinforcing steel bars of main reinforcements of the pile foundation reinforcing cage are made into reinforcing steel bar meshes, and the reinforcing steel bar meshes are horizontally filled into the pile holes; backfilling a second layer of rubble on the reinforcing mesh; impacting the second layer of rubbles by using the percussion drill; and drilling. And through combined backfilling of the horizontal reinforcing mesh and the second layer of rubbles, the uniformity of an impact interface can be improved, and deflection of a drilling tool of the impact drill is avoided, so that the drilling construction efficiency can be improved while the drilling cost of the hard inclined rock surface cast-in-place pile can be reduced.