7results about How to "Precise closure" patented technology

The utility model relates to bolt production equipment technical field, one embodiment of the public provides a kind of cold header for nut bolt production, including cold header body, the right side of the cold header body is fixedly connected with mounting plate, the inside of the mounting plate is equipped with limit hole, the inner surface of the limit hole is movably connected with movable shaft, the outer surface of the movable shaft is fixedly sleeved with round wheel, in the public, by setting rectangular block, driving motor, screw, movable plate and connecting rod, when driving motor operates, it will make screw rotate and drive movable plate to move right, further make two connecting rods rotate and drive two rectangular blocks to move away from each other, to drive four round wheels to move away from each other between two, the purpose of adjusting the distance between round wheel is realized, different diameter raw materials are conveniently transported, by the above technical scheme, the technical problem that round wheel is inconvenient to adjust in the prior art is solved.

This utility model discloses a simple, tiltable flap gate with a movable pipe opening, relating to the field of valve technology. The utility model includes a drain pipe with a base mounted on its surface and a door cover on one side of the drain pipe. A reset assembly is located on one side of the base, comprising fixed pulleys on the front and rear sides of the base and a steel cable sleeved on the surface of the fixed pulleys. Through the mechanical linkage design of the reset assembly, this utility model achieves an automatic reset function without external power. A counterweight is connected to the door cover via the steel cable; when the water pressure decreases, the weight of the counterweight can quickly pull the door cover closed, avoiding the failure risk of traditional electric or hydraulic flap gates due to power outages or malfunctions. The door cover adopts a structure connecting a pivot to a bracket, allowing it to rotate flexibly in a tilted state to adapt to different drainage angles, especially suitable for scenarios where the drain outlet angle changes frequently, significantly improving applicability and reliability.

The utility model belongs to the technical field of greenhouse, disclose a kind of precision control ventilation opening automatic switch's greenhouse, including the greenhouse body, the cotton quilt being laid on the greenhouse body and the roller blind mechanism for controlling the winding and unwinding of cotton quilt, and the roller blind mechanism includes the roller blind rod for winding cotton quilt, and the length direction of greenhouse body is equipped with ventilation opening;At least one first positioner for identifying the position of roller blind rod is fixed on the greenhouse body, and the first positioner is located below 0~2 meters of ventilation opening, and the signal output end of first positioner is connected with the signal input end of roller blind mechanism.The utility model can accurately open or close ventilation opening, with high degree of automation, long service life, and is suitable for greenhouse automatic winding and unwinding cotton quilt.

This invention relates to the field of power control technology, and mainly provides a relay detection circuit and an energy storage power supply. The circuit includes a drive module connected to the relay coil, a sampling module connected to the relay input and output terminals respectively, a comparison control module connected to the sampling module, and a controller connected to both the comparison control module and the drive module. The drive module energizes the relay coil according to the drive signal output by the controller. The sampling module collects the relay's input and output voltages. The comparison control module outputs a closure detection signal to the controller when the voltage difference between the input and output voltages is less than a preset threshold. This allows the controller to accurately calculate the actual relay engagement time by combining the timing of the drive signal output and the timing of the closure detection signal reception, ensuring the relay closes at the zero-crossing point, thus avoiding the impact of inrush current on the relay and improving the circuit's safety and reliability.

The utility model discloses a copper powder stirring barrel feeding alignment auxiliary device, including work table, discharge pipe, receiving pipe and the rotation type mixer between them, and the receiving pipe mouth is coaxial with double -tube. The upper butt joint device is established below the discharge pipe, and the symmetrical lower butt joint device is established above the receiving pipe, and all contain sliding device, butt joint cylinder, alignment platform, ear seat, butt joint pipe and butt joint, and the ear seat is symmetrically established in alignment platform both sides, and the butt joint cylinder is hinged in the ear seat. The butt joint pipe is connected the discharge pipe or receiving pipe through the hose, and the upper butt joint is established below the alignment platform, and the receiving pipe mouth is equipped with the lower butt joint, and the radial homocentricity is guided through the upper / lower butt joint cone surface contact, and the sliding device displacement compensation radial deviation, and the butt joint cylinder drives the alignment platform to deflect and correct the angle deviation around the ear seat, ensures the receiving pipe mouth and butt joint pipe accurate closure in the dynamic operation of the rotation mixer, solves the problem of low fault tolerance of traditional vertical butt joint.

The present application relates to oil and gas equipment technical field, provide a kind of offshore emergency blowout preventer, including main body, the first passage is opened in the vertical direction and passes through on the main body, second passage is opened in the horizontal direction in the main body, the second passage is opened with two, two The second passage is symmetrically arranged, the second passage and first passage are interconnected, sealing gate is slidably arranged in each second passage along the length direction of second passage, sealing element is arranged on the side wall of two sealing gates that are close to each other, driving assembly is arranged on the main body, and the driving assembly is used to drive sealing gate to move in second passage, the safety effect of the present application can improve blowout preventer, avoid well backflow.

The scheme belongs to the technical field of packaging structure design, and discloses a kind of extrusion ration cover, the extrusion ration cover adopts sleeve and two pistons (first piston and second piston) that alternatively seal the sleeve (or the combination of sleeve and mouth), to ensure the stability of ration. At any time, at least one of the two pistons is in the sleeve (or the combination of sleeve and mouth) and mutually sliding sealing fit, plus the liquid sealing effect of the gap during use, as long as the container is extruded to compress the internal space, no matter how much or how little the extrusion force, extrusion speed, liquid viscosity is, it will promote the piston to move outward, accurately seal the liquid passage, realize ration distribution, and the ration value remains stable, thereby solving the problem that the ration function of the prior art is affected by the difference in liquid properties and use method, and can adapt to use scenarios that the prior art cannot adapt to, such as large viscosity changes of different temperature liquids and large differences in use methods of different consumers.