3results about How to "Accurate flow adjustment" patented technology

This utility model discloses a tunnel fire-fighting foam liquid filling system, belonging to the field of fire-fighting equipment technology. It includes several fire boxes, a foam liquid filling vehicle, and a monitoring center. Both the fire boxes and the foam liquid filling vehicle are networked with the monitoring center to achieve data exchange. Specifically, each fire box contains a foam liquid storage tank and a first control device. The foam liquid storage tank is equipped with a first liquid level sensor, a solenoid valve, a variable frequency delivery pump, and a first flow meter. A flow regulating valve and a second flow meter are installed on the pressure water pipe. All components are connected to the first control device. The foam liquid filling vehicle contains a foam liquid storage tank, a variable frequency high-pressure pump, a battery, a third flow meter, and a second control device. Both the first and second control devices are connected to the monitoring center. This utility model provides a highly efficient, intelligent, and easy-to-maintain tunnel fire-fighting foam liquid filling system.

The utility model relates to the technical field of three -way joint, specifically disclose a joint that flow three -way adjustable, including three -way body, the left and right two ends of three -way body are all linked with connecting barrel, the left and right sides in three -way body inside all slide and connect with the movable cylinder in connecting barrel inside, two the upper and lower sides of movable cylinder outer wall all are equipped with through -hole, the inside penetration of three -way body is rotatably connected with first rotation axis, the outer wall of first rotation axis is fixedly connected with gear, the outer wall of gear is engaged with two straight racks, two straight rack other end is fixedly connected with two movable cylinders respectively, the lower end surface of first rotation axis is fixedly connected with carousel, through second rotation axis, worm, worm wheel, carousel, first rotation axis, gear, straight rack, movable cylinder and connecting barrel cooperation, can adjust the degree of closure of multiple through -hole, to accurate regulation the flow of liquid that flows out from through -hole, has the characteristics such as simple adjustment, control accurate.

The utility model discloses a locking structure of butterfly valve handle, including the connecting frame of fixed in the top of butterfly valve, one side of connecting frame top is provided with rotating mechanism, and the other side of connecting frame top is provided with the bayonet lock mechanism, the bayonet lock mechanism includes the mount pad of fixed on the outer wall of connecting frame top, and the inside of mount pad is slidably provided with the bolt, and one side of bolt is fixedly connected with connecting rod no.