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Check valve

A technology of check valve and valve body, which is applied in the direction of control valve, valve device, function valve type, etc., and can solve the problems of low sealing force and inability to adjust the check valve

Pending Publication Date: 2018-04-06
KAIRUITE VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The traditional check valve includes a valve body, the valve cavity in the valve body has an inlet and an outlet, and the inner end of the inlet passage is distributed obliquely. At the inner end of the inlet passage, relying on the self-weight of the valve flap set obliquely, the valve flap automatically closes the inlet passage, but the sealing force of this check valve is small, and it cannot be adjusted according to different media and different situations

Method used

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Embodiment Construction

[0009] The accompanying drawings show the technical solution of the present invention and its embodiments, and the relevant details and working principles of the embodiments will be further described below in conjunction with the accompanying drawings.

[0010] refer to figure 1 As shown, the check valve provided by the present invention includes a valve body 1, the valve cavity in the valve body 1 has an inlet and an outlet, the inner end of the inlet passage 2 is distributed obliquely, and a valve is hinged above the inner end of the inlet passage 2. flap 3, the valve flap 3 is covered and closed at the inner end of the inlet passage 2, the valve flap 3 is hinged with a first connecting rod 4, the first connecting rod 4 is hinged with the second connecting rod 5, and the second connecting rod 4 is hinged. There is a piston 6 at the end of the connecting rod 5, the piston 6 is arranged in the sleeve 7 and is liquid-tight with the inner hole of the sleeve 7, the sleeve 7 is fi...

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Abstract

The invention discloses a check valve. The check valve comprises a valve body. A valve cavity in the valve body is provided with an inlet and an outlet. The inner side ends of inlet channels are distributed in the inclined direction. A valve clack is hinged to the position above the inner side ends of the inlet channels. The valve clack covers downwards and seals the inner side ends of the inlet channels. The check valve is characterized in that the valve clack is hinged to a first connecting rod, and the first connecting rod is hinged to a second connecting rod; the tail end of the second connecting rod is provided with a piston, and the piston is arranged in a sleeve and is matched with an inner hole of the sleeve to be in liquid sealing; the sleeve is fixed on the valve body, and the inner hole of the sleeve is provided with an outward opening; and the outward opening end of the sleeve is in threaded connection with a sealing cover, and a preloaded spring is arranged between the piston in the inner hole of the sleeve and the end cover. The check valve can exert higher preload on the valve clack and can adjust return force of the check valve to adapt to different conditions.

Description

technical field [0001] The invention relates to a check valve. Background technique [0002] The traditional check valve includes a valve body, the valve cavity in the valve body has an inlet and an outlet, and the inner end of the inlet passage is distributed obliquely. At the inner end of the inlet passage, relying on the self-weight of the valve flap set obliquely, the valve flap automatically closes the inlet passage, but the sealing force of this check valve is small, and it cannot be adjusted according to different media and different situations. Contents of the invention [0003] In view of the deficiencies in the background technology, the technical problem to be solved by the present invention is to provide a check valve with stronger recovery force of the valve disc and capable of adjusting the recovery force of the valve disc. [0004] The present invention is accomplished by adopting the following technical solutions: a check valve includes a valve body, the v...

Claims

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Application Information

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IPC IPC(8): F16K15/06F16K15/03
CPCF16K15/03F16K15/06
Inventor 张清明李运龙张磊甘风绳
Owner KAIRUITE VALVE