Valve with articulated valve core

Abstract

The invention discloses a valve with an articulated valve core. The valve with the articulated valve core comprises a handle, a valve rod, a valve body, the valve core, a transmission piece, a seal ring and a valve cover. The valve body is a shell body which is provided with a valve rod hole and a channel, and the channel is provided with an inlet and an outlet. The valve core is connected with the valve body through a hinge so that the valve core can rotate around a rotary axial line of the hinge, and the valve core is provided with a locking column and a connecting hole. A locking hook is arranged at the bottom end of the valve rod, and a rotary hole is formed in the bottom of the valve rod. Two ends of the transmission piece are respectively provided with a rotary head, one of the rotary heads is connected with the connecting hole of the valve core, and the other of the rotary heads is connected with the rotary hole of the valve rod, so rotary motion of the valve rod is transmitted to the valve core through the transmission piece to control opening and closing of the valve core. When the valve is in a closed state, the valve core is locked to the valve body through the locking hook and the locking column. The valve with the articulated valve core has the advantages of being compact in structure, small in opening moment of force, large in opening angle, large in flow, and the like.

Description

technical field [0001] The present invention relates to valves for intermediate bulk storage containers. Background technique [0002] Existing valves for medium-sized bulk storage containers, such as butterfly valves, are opened by rotating the shaft in the middle of the valve core, which drives the two sides of the valve core to rotate and open, because the valve core is generally located inside the valve body, and its flow is affected by the valve core and the shaft , poor sealing. Moreover, due to the friction between the sealing ring of the butterfly valve and the valve body, the force to open and close the valve is relatively large. [0003] Recently, a guide groove type lifting rod ball valve has been developed at home and abroad. There is an S-shaped guide groove on the valve stem, which cooperates with the guide pin, so that when the valve stem rises, it drives the ball away from the valve seat, and then rotates 90° counterclockwise to fully open the valve. When t...

AI Technical Summary

Problems solved by technology

When the valve stem and the rotating disk rotate counterclockwise, under the forced action of the "brace" track on the rotating disk, the limit pin and the sealing structure of the valve first gather toward the center of the fixed disk according to the track of the "straight line" track on the fixed disk. , and then rotate counterclockwise according to the track of the "arc" track on the fixed plate, and the valve opens. The technical disadvantage of this patent is that it uses the track of "arc and straight line", which requires high precision and complicated processing technology. The valve core is a combination It is difficult to obtain a balanced pre-tightening force, resulting in damage to the valve core and shortening the life of the valve

[0005] Chinese patent 200620105067 introduces an orbital plug valve, which includes a valve body, a valve cover, an operating part, a valve stem, a valve seat, a valve plug that forms a conical sealing pair with the valve seat, and an orbital mechanism. The orbital mechanism is installed There is an orbital ring with two guide grooves on the neck of the valve plug and a double-pin plate with two guide pins pinned into the guide grooves. It also includes a lock nut and an adjustment ring to adjust the installation position of the orbital ring. The disadvantages of this patent The structure of the transmission device is complex, which extremely occupies the external space of the valve body; the transmission device involves many parts and the assembly process is complicated

In addition, due to the valve plug of the conical sealing pair, as well as the lock nut and the adjusting ring for adjusting the installation position of the orbital ring, it needs to be adjusted many times, so the operation is complicated

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