Blow-down valve

A technology of blowdown valve and valve disc, which is applied in the direction of lift valve, valve detail, valve device, etc., can solve the problem of low reliability of blowdown valve use.

Pending Publication Date: 2021-09-07
NEWAY VALVE SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects of low service reliability and service life of the sewage valve in the prior art, thereby providing a sewage valve that is resistant to erosion, not easy to be damaged, long in service life and high in reliability.

Method used

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Embodiment Construction

[0027] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention relates to the technical field of valves, in particular to a blow-down valve. The blow-down valve comprises a valve main body formed by connecting a valve body and a valve deck, wherein a middle cavity is formed in the valve main body; a medium inlet, a medium outlet and at least two valve element assemblies are arranged on the valve main body; the medium inlet, the medium outlet and the at least two valve element assemblies can communicate through the middle cavity; the medium outlet is provided with a cage sleeve; the cage sleeve is communicated with the middle cavity; a valve clack assembly comprises a valve clack and a valve seat which abuts against the valve clack in a sealed mode; a channel communicated with the medium inlet or the medium outlet is defined by the valve seat; the valve clack is provided with a sealing protrusion stretching into the channel; and a hard alloy layer is arranged on the matching face of the valve seat and the sealing protrusion. Through adoption of the blow-down valve, the defects that in the prior art, the blow-down valve is low in use reliability, and is short in service life are overcame, and therefore the blow-down valve is resistant to scouring, not prone to damage, long in service life and high in reliability.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a blowdown valve. Background technique [0002] During the long-term operation of pipelines and pressure vessel equipment, impurities, dirt and other sediments are likely to be generated inside. In order to ensure the safe and efficient operation of pipelines and pressure vessel equipment, regular sewage is required. In the process of industrial production, especially in the electric power and chemical industry, boilers are widely used. During the use of boilers, it is easy to form furnace water with high salt and alkali content and slag, sludge and water deposited on the bottom of the furnace. Loose sediment and irregular sewage discharge will seriously affect the boiler's discharge, recycling, and heat exchange efficiency. A sewage discharge device is required for the regular sewage discharge process, and most of the commonly used sewage discharge devices are sewage valves; whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/00F16K1/36F16K1/42F16K1/32F16K1/48F16K25/00F16K27/02F16K47/02F16K47/08F16K43/00
CPCF16K1/00F16K1/36F16K1/42F16K1/32F16K25/005F16K27/02F16K47/023F16K47/08F16K1/487F16K43/001
Inventor 奚伟永
Owner NEWAY VALVE SUZHOU
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