36results about How to "Avoid mechanical jamming" patented technology

The invention discloses a method for controlling the travel action of an electronic gun isolation valve. First, according to the actual installation position of the electronic gun isolation valve, the effective space for the travel action of the T-shaped valve stem of the gun isolation valve is calculated, and the T-shaped valve stem whose thread length meets the mechanical stroke requirements is designed. ; Design a fixed bracket that can install two detection limit switches; then replace the original valve stem on the gun isolation valve body with a newly designed T-shaped valve stem, replace the original fixed bracket with a newly designed fixed bracket, and install 2 Detect the limit switch; finally, control the opening and closing of the gun isolation valve and the precise stop of the valve stem through the double detection limit switch. The invention can avoid the mechanical jamming phenomenon of the gun isolation valve body, greatly prolongs the service life of the tungsten filament of the electron gun, reduces the replacement frequency of the tungsten filament, and ensures the welding quality of the workpiece.

The invention provides a cooling water jacket for a diesel engine. The cooling water jacket comprises a cylinder body, an air cylinder body water jacket, a piston, an air cylinder cover and an air cylinder cover water jacket; an air cylinder sleeve is arranged in the cylinder body, the air cylinder body water jacket is arranged on the outer side of the air cylinder sleeve, and the air cylinder body water jacket comprises a column body cold water cavity and a cooling pipe; the piston is arranged in the air cylinder sleeve, the air cylinder cover is arranged at the top end of the cylinder body,and the air cylinder cover water jacket is arranged in the position, directly facing a combustion chamber, of the air cylinder cover; and a water inlet hole is formed in the side wall of the air cylinder cover. According to the cooling water jacket, the high-temperature air cylinder sleeve and piston can be cooled through the air cylinder body water jacket, the cooling effect is good, the situation of cylinder breaking caused by uneven cooling can be avoided, the working efficiency of the diesel engine is improved, and the service life of the diesel engine is prolonged; and the combustion chamber can be cooled through the air cylinder cover water jacket, meanwhile, the uniformity of heat dissipation and cooling can be improved through an annular cold water cavity, a first annular cooling pipe and a second annular cooling pipe, and the situation of breaking of the air cylinder cover due to the local overheating or overcooling situation can be avoided.

The invention relates to the technical field of injection molding equipment, and discloses flash treatment equipment for plastic parts. The flash treatment equipment comprises an upper connecting block, wherein a lower connecting block is arranged at the lower end of the upper connecting block, a bowl-shaped injection molded product is arranged between the upper connecting block and the lower connecting block, an outer ring connecting groove is formed in the lower surface of the upper connecting block, a rotating block is rotatably connected to the inner wall of the top of the outer ring connecting groove, a flash removing block is fixedly connected to the outer surface of the rotating block, an injection molded product containing groove is formed in the upper surface of the lower connecting block, an inner ring containing block is fixedly connected to the inner wall of the bottom of the injection molded product containing groove, the upper end of the inner ring placing block is also rotatably connected with a rotating block, and the outer surface of the rotating block is also fixedly connected with a flash removing block. The flash treatment equipment for the plastic parts is easyto operate, the difficulty for an operator to start is low, and flash on the inner circle and the outer circle of the bowl-shaped injection molded product can be well and comprehensively cleaned.

The invention relates to the technical field of medical devices, and discloses a subcutaneous drainage catheter preparatory device for laparoscopic surgery, which includes a reserved shell, a barrier film is fixedly connected to the inner wall of the reserved shell, and the lower surface of the reserved shell is provided with The drainage tube is preset, the outer surface of the reserved casing is fixedly connected with two extruded airbags, the inner wall of the bottom of the reserved casing is fixedly connected with a contraction airbag, the upper surface of the contraction airbag is fixedly connected with a penetrating support block, and the penetrating support block The upper surface is provided with a skin-breaking blade, and the upper surface of the support block is provided with a drainage tube head. The upper surface of the drainage tube head is fixedly connected with an external drainage tube, and a supporting mechanism is arranged on the drainage tube head. The subcutaneous drainage catheter reserved device for laparoscopic surgery can treat subcutaneous effusion in a reserved way, which reduces the time and cost for patients to treat subcutaneous effusion, reduces the difficulty of getting started for medical staff, and guarantees Efficiency in the treatment of subcutaneous effusions.