Unlock instant, AI-driven research and patent intelligence for your innovation.

Pressure reducing valve

A pressure reducing valve and valve core technology, applied in the field of pressure reducing valves, can solve problems such as changes, and achieve the effects of preventing cavitation, inhibiting changes in flow characteristics, and inhibiting fluid stripping

Inactive Publication Date: 2018-04-27
FUJIKOKI MFG CO LTD
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a possibility that the balance of the pressure applied to the valve element changes rapidly, and a force in the valve closing direction acts on the valve element.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pressure reducing valve
  • Pressure reducing valve
  • Pressure reducing valve

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0082] figure 1 It is a sectional view showing the pressure reducing valve of the first embodiment. The pressure reducing valve 1 of the present embodiment is used for, for example, a water heater, etc., and mainly includes a valve body 10 , a valve stem 30 housed inside the valve body 10 , and a diaphragm device 40 as a pressure sensitive follower.

[0083] The valve main body 10 is formed by, for example, a resin material, and a cylindrical valve chamber 21 is provided inside the valve main body 10. The valve chamber 21 has a valve seat 23 with a valve port 22, and a There is an outflow chamber 26 . The valve main body 10 has an upper opening 10 a connected to the valve chamber 21 and a lower opening 10 b connected to the outflow chamber 26 , and the lower opening 10 b is closed by a thick, substantially disk-shaped bottom cover member 60 . The upper opening 10 a is closed by the membrane arrangement 40 .

[0084] A primary-side inflow port 11 connected to the valve cham...

no. 2 approach

[0118] Figure 6 It is a partial cross-sectional view showing the valve body of the pressure reducing valve according to the second embodiment. The pressure reducing valve 2 of the present embodiment differs from the first embodiment in that the inclined surface 37d of the sealing member 37 and the outer peripheral surface 36c of the upper pressing portion 36 are curved surfaces convex downward in a cross-sectional view. Since other configurations are the same as those of the first embodiment, repeated descriptions of the same configurations are omitted.

[0119] Such as Figure 6 As shown, the outer peripheral surface 36c of the upper pressing portion 36 and the inclined surface portion 37d of the sealing member 37 are formed such that the inclination angle θ decreases continuously from the inner side to the outer side. The inclined surface portion 37d of the sealing member 37 is continuously connected to the outer peripheral surface 36c of the upper side pressing portion 3...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Provided is a pressure reducing valve capable of preventing generation of cavitation with fluid peeling and effectively suppressing the change of the pressure balance applied to a valve core portion.The pressure reducing valve (1) comprises a valve main body (10), a valve rod (30) and a diaphragm device (40), the internal part of the valve main body (10) is provided with a valve seat (23) with avalve chamber (21) comprising a valve seat (23) with a valve port (22), the lower side of the valve portion is provided with a outflow chamber (26), the peripheral portion of the valve main body is provided with a primary outflow inflow port (11) connected with the valve chamber and a secondary side outflow port (12) connected with the outflow chamber, the valve rod comprises a valve core portion(35) for opening and closing the valve port and is inserted into the valve main body in the vertical direction in a free sliding manner, the diaphragm device is arranged on the valve main body to sense the pressure of a secondary side and drive the valve rod in the vertical direction. An opposite surface, opposite to the valve seat and contacted with and separated from the valve seat, of a sealing part (37) of the valve core portion is integrally set as an inclined surface portion (37a) inclining downwardly from the horizontal direction from the inner side to the outer side.

Description

technical field [0001] The present invention relates to a pressure reducing valve used in hot water supply equipment and the like. Background technique [0002] As such a pressure reducing valve, a pressure reducing valve having a resin valve main body, a valve stem, and a pressure sensitive follower (diaphragm device) is known, as described in, for example, Patent Document 1 below. [0003] Specifically, the pressure reducing valve described in Patent Document 1 includes a valve main body which is composed of one member, and a valve chamber is provided inside the valve main body, and the valve chamber has a valve seat with a valve port. , and an outflow chamber is provided on the lower side of the valve port, and a primary side inflow port connected with the valve chamber and a secondary side outflow port connected with the outflow chamber are provided on the outer periphery of the valve body; the valve a stem provided with a valve core for opening and closing the valve po...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/38F16K1/00F16K17/30G05D16/06
CPCG05D16/0611F16K1/00F16K1/38F16K17/30F16K17/0453F16K17/06F16K17/0406F16K1/36
Inventor 近藤大介望月健一
Owner FUJIKOKI MFG CO LTD