JPS5899566A - Two-position operation three-way valve - Google Patents

Abstract

PURPOSE:To obtain the stable operation in a captioned valve provided with a ball valve of a magnetic body between two outlet side connecting pipes set horizontally by providing a convex part projected inward at the intermediate part between two connecting pipes for preventing the ball valve from stopping at the intermediate part. CONSTITUTION:Outlet side connecting pipes B and C made of nonmagnetic bodies are horizontally set, while an inlet side connecting pipe A is connected upward and vertically in an inverse T-shape on the intermediate part between both connecting pipes B and C. In connecting pipes B and C, valve seats (b) and (c) of non-magnetic bodies are respectively fixed by caulking 3 or other processes, and in a horizontal pipeline D between both valve seats (b) and (c), a ball valve 1 made of a magnetic body is rotatably contained for constructing a three-way valve. In this three-way valve, at the bottom of a horizontal pipeline D on the extension of the inlet side connecting pipe A, a convex part 2 is projected to check the stoppage of the ball valve 1. This construction prevents the ball valve 1 from being placed at the center between valve seats (b) and (c), and stabilizes the operation of switching between two positions by the ball valve.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention provides an inverted T-shaped structure in which the connecting pipe (A) Th connected to the inflow side is set to be inclined upward, and the connecting pipes (B) and C connected to the outlet side are set horizontally. Connect in a shape of
) and C respectively provide valve seats (bl and tel),
A magnetic ball valve, which is interposed on the bottom surface of the pipe between the valve seats fbl and ic1 and is seated and closed on each valve seat, is moved by a foundation stone from outside the pipe, and the flow path is connected to the input-B or N- This invention relates to a two-position operating three-way valve that is used by selectively switching to C communication.

Regarding the two-position operating three-way valve mentioned above, taking advantage of the fact that the operating plate of the thermostat causes trouble due to temperature changes, a magnet is attached to the tip of the operating plate to change the position of the magnet to the first position or the second position. The present applicant has already proposed a three-way switching valve which selectively reverses its displacement to make the flow path into the above-mentioned N-B communication or 8-0 communication. However, this method requires the use of a thermostat that has an actuating plate that performs troublesome operations.
C. Since the ball valve can occupy two or more predetermined positions, the position of the ball valve in the flow path becomes unstable, and the ball valve is placed in the N seat on the valve seat. A situation occurs in which a ball valve exists between the two valve seats, and it does not operate as a two-position operating valve.

An object of the present invention is to provide a three-way valve in which two predetermined positions can be obtained whether the magnet is moved proportionally or manually.

The structure of the present invention is such that a convex portion is provided on the bottom surface of the horizontal conduit between the two valve seats f'bl and tct at approximately the center, and the convex portion is inclined low toward both valve seats.

By doing this, the ball valve cannot exist in the center between the two valve seats, and is urged to move in the direction of either valve seat (3). By placing a magnet in contact with the outside of the pipe between the valve seat and the valve seat, the ball valve is stabilized, and in this state, fluid is caused to flow and the valve seat on the transfer side of the ball valve is closed by the dynamic pressure of the fluid. A switch is made to flow fluid from the other valve seat. To move the ball valve to another valve seat, with the flow of fluid stopped, move the magnet to the other valve seat side, move the ball valve by the length of the magnet, and get over the convex part.
The convex portion is set in advance to such an extent that the ball valve can be climbed over by the attraction of the magnet. Thereafter, as described above, the ball valve is fully held at the magnet position between the ball valve and the other valve seat in the transfer direction, and fluid is allowed to flow in this state. When fluid is flowing, the ball valve will sit on one of the valve seats due to the dynamic pressure of the fluid and close that valve seat, and after closing, the ball valve will maintain that state due to the fluid pressure difference between the primary and secondary sides of the valve. However, even if the position of the magnet moves, the ball valve will not move against the pressure difference and the convex part of the fluid, and while the fluid is flowing, the first or second valve seat, which previously closed one valve seat, will not move. It is a two-position operation that maintains the position.

(4) Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a cross-sectional view of an embodiment of the present invention, in which the connecting tubes (B) and (C) of the non-extracting body are set horizontally, and the connecting tube (5) is connected vertically upwards with an inverted T-shape. A valve seat made of non-magnetic material (b+
and valve seat tc+i respectively from the outer surface of the connecting pipe (
3), etc., and both valve seats +b+, (C
A magnetic ball valve (11) is removably interposed on the bottom of horizontal pipe 0 between l and 1, and the extension line of the connecting pipe on the fluid inflow side is placed inward on the bottom of pipe position 2 (4). A protruding convex portion (2) is provided by caulking, extrusion, or other means from the outer surface of the conduit 0. Figure (B) shows a cross-sectional view taken along the line - in Figure 1; Figure 2 shows a convex part (2) provided in an arc shape along the circumferential surface with the pipe position +41 as the center, and Figure 3 shows a convex part (2) provided in an arc shape along the circumferential surface with the pipe position (4) as the center. +51 is a piece of magnet that is movable in contact with the outside of the bottom of the pipe, and as mentioned above, when attached to the tip of the actuating plate of the thermostat, it can be used to sense the thermostat. In this case, the magnet can be moved by a proportional thermostat that moves in proportion to the temperature, or a two-position reversible thermostat.

Also, if the magnet is manually attached to the outside of conduit 0, the conditions for movement are not limited to temperature changes, but also other conditions such as 50J (z power supply or 6 Ql-1,z power supply conditions) It can also be applied to applications such as switching the flow path to A-C7 communication or A, -B communication.

[Brief explanation of drawings]

FIG. 1 shows a cross-sectional view of one embodiment of the present invention, with the opening A-
A cross-sectional view taken along line A, and Figure 2 shows the second example of the convex portion.
-A cross-sectional view taken along line 4, and Figure 3 is a cross-sectional view showing the third example of the convex portion. 1B, C...Connecting pipe D...Horizontal pipe line (1)...
Ball valve (2)...Protrusion (3)...Caulking (41
...Position of the convex portion (5) ...Magnet piece patent applicant (Kasaginomiya Seisakusho)

Claims (3)

[Claims] (1) Connecting pipes (B) and (C) that are set horizontally and connected to the outflow side, and connecting pipes (B) and (C) that are set horizontally and connected to the inflow side and are set upward to connect them in an inverted T shape, Connecting pipe (B
) and the valve seat +bl, t in the connecting pipe (C), respectively.
el, a magnetic ball valve is interposed on the bottom surface of the horizontal pipe between the valve seat (b+) and the valve seat tel, and a magnet piece that comes into contact with the outer surface of the pipe is moved to move the ball valve to the valve seat ( b+ or (
Alternately seat C1 on the falling side and close it, flow path - ((
In a three-way valve used for A-C communication or A-B communication,
A two-position operating three-way valve that can move the ball valve beyond the four protrusions by the magnetic force of the magnet piece when fluid flows in and stops flowing. (2) The two-position operating three-way valve according to claim 1, wherein the convex portion is entirely formed in an arc shape along the circumference of the bottom surface of the conduit between the two valve seats on the extension line of the inflow side connecting tube. (3) A sloped bottom surface is formed with the position of the bottom surface of the conduit between the upper valve seats on the extension line of the inflow side connecting pipe (4) as the apex and lowered with a gentle slope in the direction of both the valve seats. Two-position operated three-way valve.