4results about How to "Avoid non-circulation" patented technology

This utility model discloses an integrated multifunctional intubation device with flushing, drainage, and drug administration functions. The device includes an intubation tube, a three-way drug administration flushing and drainage device, a connecting tube, and an anti-backflow negative pressure drainage ball. The inner surface of the intubation tube has supporting teeth to prevent compression closure. One end is a connecting section, and the working section's tail end is fish-mouth shaped with staggered flushing holes on its smooth surface. The outer circumference of the intubation tube has an "I"-shaped fixing ring. The three-way valve is connected to the anti-backflow negative pressure drainage ball through the connecting tube, allowing liquid in the intubation tube to flow into the drainage ball, preventing backflow and allowing liquid to flow out through the drain hole. The connections between the connecting tube, the intubation tube, and the three-way valve are all threaded and tightened. This device integrates multiple functions, has a reasonable structural design, and can effectively realize flushing, drainage, and drug administration operations, while also preventing blockage of the intubation tube due to compression and dislodgement due to external force.

The utility model discloses a clamp enabling a plastic baking varnish piece not to deform easily, and belongs to the technical field of clamps. In order to solve the problem that in the prior art, the clamping mode is not suitable, in conclusion, according to the clamp enabling the plastic baking finish piece to be not prone to deformation, the opposite clamping heads are arranged to clamp the baking finish piece, and due to the fact that only a small part of the baking finish piece needs to be clamped, damage to the baking finish piece is avoided as much as possible, and deformation of the baking finish piece is prevented as much as possible. And a groove is formed in the chuck for hot air to pass through, so that the situation that local air at the contact part of the chuck and the baking finish piece does not circulate, and the baking finish piece becomes soft and deforms due to over-high temperature is prevented. The combination of the spiral knob, the inserting rod and the inserting sleeve is further arranged, the baking finish piece can be limited through friction force after the baking finish piece is clamped by the clamping head, and the situation that the baking finish piece is deformed and damaged due to the fact that the clamping head continuously applies force to the baking finish piece is avoided. And a heat-resistant silica gel pad is further arranged for flexible contact, and damage caused by scraping of the chuck to the paint baking piece is avoided.

The utility model discloses nano ceramic coating curing equipment which comprises a drying box, notches are symmetrically formed in the two ends of the drying box, fixing plates are symmetrically installed on the inner sides of the bottom ends of the notches, and a transmission roller is rotationally connected between the fixing plates. A drying mechanism is arranged in one side of the drying box, and adjusting assemblies are symmetrically arranged in the drying box. Wherein the drying mechanism comprises a box body arranged on one side of the drying box, air pipes are symmetrically installed between the drying box and the box body, a bent pipe is installed at one end of each air pipe, and a conical pipe is installed at the bottom end of each bent pipe, so that the effect of rapidly drying and curing the nano ceramic coating on the two faces of the aluminum alloy plate can be achieved; and compared with the mode that the plate needs to be turned over and dried twice in the prior art, more convenience is achieved, and therefore the machining efficiency of the aluminum alloy plate is greatly improved.

The utility model discloses a long -distance air supply ventilation device for tunnel construction, including tunnel body, install negative pressure fan in the top of tunnel body and install the air supply tube in the top of tunnel body, the inner top of tunnel body is fixedly connected with dust removal tank, the inner wall fixedly connected with filter screen of dust removal tank, the air inlet end of negative pressure fan and the lateral wall fixed communication of dust removal tank, the air outlet end terminal fixed communication of negative pressure fan has the conveying pipe, the outer wall equal interval of conveying pipe is equipped with a plurality of connecting pieces, a plurality of connecting pieces all are fixedly connected with the top of tunnel body, be equipped with angle adjusting mechanism on the air supply tube. The utility model discloses through angle adjusting mechanism realizes the swing of air supply component, can cover more extensive tunnel area, promotes the overall ventilation uniformity, through the setting filter screen can carry out effective filtration to the air of entering tunnel, reduces dust and other impurities, guarantees the health of construction personnel.