JPS59121269A - Valve for strainer - Google Patents

Abstract

PURPOSE:To make a bypass unnecessary and obtain the valve for the strainer without necessitating any valve except the valve attached to the strainer by attaching the strainer directly to a valve box (the main body of the valve). CONSTITUTION:In case the strainer 30 is desired to be removed to clean it, a handle wheel 44 is operated to lower the valve body 42 and close the opening 36 of the valve box 34 by a valve 42 as shown by full lines. In this case, fluid, entering into the valve box 34, passes through the valve box 34 without effecting anything. Next, an adaptor member 38 is removed to remove the strainer 30 from the valve box 34 and the strainer 30 is cleaned. Subsequently, the cleaned strainer 30 is attached, thereafter, the handle wheel 44 is operated to lift the valve body 42 to a position shown by the dotted lines in the diagram.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a valve, and in particular has a valve body (valve main body) provided with an opening for adding a removable strainer;
The present invention relates to a strainer valve in which the opening is closed with a valve body when the strainer is attached or detached.

In equipment that uses water, such as boilers, cooling systems, heat exchangers, and evaporators, piping, valves (
pulp), scale forms and accumulates on the internal walls of the equipment. In order to prevent scale from occurring and to remove magnetic substances contained in water, it is known to dispose a strainer containing a permanent magnet in a pipe. Furthermore, in addition to equipment that uses water, it is known that a strainer with a built-in permanent magnet is installed in the pipe on the fuel supply side of the engine for the purpose of removing magnetic substances contained in the fuel oil of internal combustion and external combustion engines. It is being Incidentally, in order to perform cleaning work to remove magnetic substances accumulated in the strainer, it is sometimes necessary to remove the strainer from the pipe line and clean it.

For this reason, conventionally, water supply or oil supply has been temporarily stopped and the strainer has been removed, or a side channel (
bypass).

FIG. 1 is a diagram showing an example of a conventional piping diagram in which a strainer is provided with a binox. In FIG. 1, a strainer 12 is provided in the main conduit 10 at 1 and X, and valves 14 and 16 are provided on both sides of the strainer 12. Bypass 1 parallel to main line 10 including strainer 12 and valves 14,16
8, and this /(ipas 18 has a valve 20. Normally, the valves 14 and 16 are open and the valve 18 of the bypass 20 is closed, and fluid such as water or oil is routed through the main pipe as shown by the arrow. 10. On the other hand, when removing or installing the strainer 12 for cleaning etc.,
Valves 14 and 16 are closed and valve 18 of bypass 20 is opened to allow fluid, such as water or oil, to flow through bypass 18 to ensure uninterrupted water or oil supply.

As mentioned above, the conventional example shown in FIG. 1 requires at least three bypasses 18 and valves for attaching and detaching the strainer, so the configuration is complicated, and further space is required for arranging the hay pass. Therefore, there is a problem that restrictions are imposed on piping. Furthermore, there is also the problem that it takes time and effort to remove or attach the strainer 12 from the main pipe 10.

Therefore, the present invention provides a strainer valve that does not require a bypass unlike the conventional example and does not require any valves other than the valve to which the strainer is attached, by directly attaching the strainer to the valve box (valve body). It is to provide.

Compared to the conventional example, the present invention has a remarkable effect that there is no need to provide a bypass, so there is a high degree of freedom in piping, the structure is extremely simple, and the strainer can be attached and detached very easily.

FIG. 2 is a diagram for explaining the present invention. Below, the second
An embodiment of the present invention will be described with reference to the drawings. In FIG. 2, the strainer 30 has a permanent magnet 32 inside.
It is attached to an opening 36 in a valve body (or valve body) 34 with a suitable attachment member 38 such as a bolt or nut. The kerated valve body 42 attached to the tip of the valve stem 4σ is /\
It is raised and lowered by rotating the fundle 44. usually,
The valve body 42 is located at the position shown by the dotted line, and fluid (water, oil, etc.) flowing into the valve box 34 from the right or left side in the drawing is
The tapered valve body 42 causes the fluid to flow in the direction of the permanent magnet 32 provided in the strainer 30, where magnetic substances in the fluid are captured by the permanent magnet.

When it is desired to remove the strainer 30 for cleaning, first operate the handle wheel 44 to lower the valve body 42, and as shown by the solid line in the drawing, the valve body 34 is opened by the valve 44.
The section 36 is closed. In other words, the fluid flowing into the valve body 34 passes through the valve body 34 without any problem. Next, the mounting member 38 is removed, the strainer 30 is removed from the valve box 34, and the strainer 3o is cleaned. Next, after installing the strainer 3° after cleaning, the handle wheel 44 is operated to raise the valve body 44 to the position indicated by the dotted line in the drawing. In addition, in the explanation given in -1- above, we talked about cleaning the mouth/seat 30, but it goes without saying that the same operation can be performed for purposes other than cleaning (for example, inspection and repair). be.

As explained above, the present invention not only does not require a bypass for each strainer installation unlike the conventional example, but also requires only one valve, making the piping system extremely simple. Furthermore, the present invention has the remarkable effect that there is no need to take special consideration to piping space, and the strainer can be attached and detached very easily.

[Brief explanation of drawings]

FIG. 1 is a piping diagram for explaining a conventional example, and FIG. 2 is a diagram for explaining an embodiment of the present invention. 30・Strainer 34: Valve box (valve body) 36: Opening 42: Valve body Fig. 1 Fig. 2

Claims (1)

[Claims] A strainer valve comprising a valve box provided with an opening BB for attaching a removable strainer, the opening being selectively blocked by a valve body.