A magnetically locked soft-sealed gate valve

Abstract

The invention provides a magnetically locked soft-sealed gate valve, which includes a valve body, a valve cover is arranged on the valve body, a through hole is arranged on the valve cover, a valve stem is arranged in the through hole, and the valve stem A gate is connected to the bottom end, and a magnetic lock is provided on the bonnet, and the magnetic lock includes a gland, a core assembly and a key assembly arranged on the bonnet in sequence, and the top end of the valve stem passes through the bonnet in sequence , Insert the core assembly after pressing the cover; the core assembly includes a lock cylinder and a lock cover, a first magnet and an aluminum block are arranged in the lock cylinder hole of the lock cylinder, and a A first magnet and a cylindrical helical compression spring; the key assembly includes a key, a key cover and a key shaft, and a second magnet is arranged in the key. The opening and closing structure of the valve of the present invention has a protection device, which is not easy to be damaged or stolen, not only improves the use safety performance, prolongs the service life, but also does not need a special key to open, and is easy to operate.

Description

technical field [0001] The invention relates to the field of gate valves, in particular to a magnetically locked soft-sealed gate valve. Background technique [0002] Soft-sealed gate valve is a valve with high casting precision requirements. It has good sealing performance and is widely used in various industries. At present, the soft-sealed gate valves on the market rely on the sealing surface of the rubber gate and the sealing surface of the valve body to achieve sealing. Control, the size of the bore width cannot be guaranteed, resulting in unqualified valve body seals and low yields; during use, the sealing surface of the rubber gate is in direct contact with the valve body seal to achieve sealing, so after the medium pressure in the pipeline rises, the rubber The valve is subjected to a large thrust of the medium, which is easy to squeeze the rubber surface, resulting in seal leakage; during the opening and closing process of the valve, the rubber gate is in direct co...

AI Technical Summary

Problems solved by technology

However, it controls the switch of the valve through the handwheel set on the valve cover. The handwheel as an opening and closing structure protrudes out of the valve body without a protective device, so it is easy to be damaged and stolen, and anyone who can touch the handwheel The valve can be opened or closed at will, which increases the difficulty of property management of public utilities and communities

[0003] At present, valves with locking devices generally use mechanical lock bodies and require special keys to open. Although this method is relatively safe and reliable, when there are many valves with locks installed and the keys are kept by special personnel, due to the The corresponding special keys cannot be used universally, and it is inconvenient for the custodian to carry all the special keys, and the special keys need to be checked during operation, which brings great inconvenience to the opening and closing of the valve

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