Self-operated differential pressure control valve and control method
A self-operated differential pressure, control valve technology, applied in separation methods, chemical instruments and methods, lift valves, etc., can solve the problems of inconvenient use, easy clogging of liquid impurities, etc.
Pending Publication Date: 2022-03-04
上海能化自控设备有限公司
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Problems solved by technology
[0003] The existing control valve is easy to block when there are many liquid impurities flowing in it, and it needs to be disassembled to clean up the impurities, which makes it not convenient to use
Method used
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Embodiment Construction
[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0021] In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element...
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The invention relates to the field of engineering elements, in particular to a self-operated differential pressure control valve and a control method.The self-operated differential pressure control valve comprises a shell, a differential pressure control assembly and an anti-blocking assembly, when the self-operated differential pressure control valve is used, water enters from a water inlet and is discharged from a water outlet after passing through a control port, and pressure control is conducted on the control port through the differential pressure control assembly; the anti-blocking assembly comprises a filter screen, a supporting rod, a scraping piece, a waste liquid valve and a waste liquid box, the filter screen is fixedly connected with the shell, the supporting rod is rotationally connected with the shell, the scraping piece is fixedly connected with the supporting rod, the supporting rod can support the scraping piece to rotate, the scraping piece can rotate under the impact of liquid, and therefore the filter screen can be scraped to remove impurities blocked on the filter screen; the waste liquid valve is communicated with the water inlet, the waste liquid box can be opened and closed through the waste liquid valve to discharge waste water into the waste liquid box, and then the pressure difference control valve can continue to work by closing the waste liquid valve, so that the control valve can operate for a long time and does not need to be detached for cleaning.
Description
technical field [0001] The invention relates to the field of engineering components, in particular to a self-operated differential pressure control valve and a control method. Background technique [0002] The self-operated differential pressure control valve does not require external energy and relies on the pressure change of the controlled medium to automatically adjust, and automatically eliminates the remaining pressure head of the pipe network and the flow deviation caused by pressure fluctuations. It is especially suitable for household metering or automatic control systems. [0003] The existing control valve is easily blocked when there are many liquid impurities flowing therein, and needs to be disassembled to clean the impurities, which makes the use inconvenient. Contents of the invention [0004] The object of the present invention is to provide a self-operated differential pressure control valve and a control method, which can quickly clean up impurities wit...
Claims
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Login to View More IPC IPC(8): F16K17/20F16K1/00F16K1/32B01D35/04B01D29/64
CPCF16K17/20F16K1/00F16K1/32B01D35/04B01D29/6476
Inventor 叶伟煌
Owner 上海能化自控设备有限公司