6results about How to "Prevent secondary use" patented technology

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.

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 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.

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.