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Valve mechanism

A valve and valve port technology, applied in the field of foreign matter removal countermeasures in valve ports, can solve the problems of insufficient removal of foreign matter and difficult parts, etc.

Active Publication Date: 2019-02-05
TLV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the above-mentioned technique, there is a problem that the foreign matter cannot be sufficiently removed especially in the case of a foreign matter with a strong adhesion force.
In addition, in a valve mechanism in which the valve body advances and retreats from the valve port to adjust the opening of the valve port, it is substantially difficult to arrange a foreign matter removal member in the valve port as in the above technique.

Method used

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  • Valve mechanism
  • Valve mechanism
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Examples

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other Embodiment approach

[0043] In the flow regulating valve 10 of the above-mentioned embodiment, the structure of the valve port and the valve body may be changed as follows. For example, if Figure 5 As shown, in the valve port 26, the expansion part 26e formed on the downstream side of the throttle part 26c may not be tapered, but may have a form in which the opening diameter suddenly increases. and, if Image 6 As shown, in the valve port 26, the portion connected from the upstream opening 26a to the throttle portion 26c may be a cylindrical portion 26f having a constant opening diameter. Furthermore, in the valve body 32h, the downstream side of the flange part 32c may be comprised with the cylindrical part 32i and the tapered part 32j. Whether in Figure 5 , still in Image 6 In the illustrated forms, as in the above-mentioned embodiment, when the upstream side opening 26a of the valve port 26 has a predetermined opening degree (predetermined small opening degree), the passage area of ​​the...

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Abstract

A flow rate adjustment valve 10 is provided with: a casing 10 having formed therein an inlet opening 12, an outlet opening 13, and a flow path 14 for connecting the inlet opening 12 and the outlet opening 13; a valve opening 26 provided in the flow path 14; and a valve body 32d which moves from the upstream side toward the valve opening 26 and away therefrom to adjust the degree of opening of theupstream-side opening 26a of the valve opening 26. The valve opening 26 has: a throttle section 26c having a smaller opening diameter than the upstream-side opening 26a; and an expanded opening section 26d formed continuous with the downstream side of the throttle section 26c and having a greater opening diameter than the throttle section 26c. The valve opening 26 is configured so that, when the upstream-side opening 26a has a predetermined degree of opening, the area of the valve opening 26 through which fluid flows will be smallest at the throttle section 26c.

Description

technical field [0001] The present invention relates to a valve mechanism for discharging fluids such as sewage and steam from a valve port, and particularly relates to a measure for removing foreign matter at the valve port. Background technique [0002] Valve mechanisms for discharging fluids such as sewage, steam, etc. from a valve port are well known. In such a valve mechanism, there is a problem that foreign matter contained in the fluid accumulates on the valve port to clog the valve port. For example, Patent Document 1 discloses a technique for solving this problem. The technique disclosed in this patent document 1 is such that foreign matter removing members disposed in a valve port (orifice) are rotated by fluid in the valve port to automatically remove foreign matter deposited on the valve port. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2001-27391 [0004] However, in the above technique, there is a problem that the foreign matter cannot be suffi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K51/00F16K1/42F16K1/38F16T1/00
CPCF16K51/00F16T1/00F16K1/42F16K1/422F16K1/385F16K1/54F16K1/38F16K25/00
Inventor 小池正
Owner TLV CO LTD