RU193367U1 - DRAIN VALVE - Google Patents

Abstract

A mechanical drain valve controlled by a button is designed to drain water or extinguishing agent in control units of fire automatic installations. The casing is made of plastic mass, while a metal mortgage made in the form of a threaded sleeve is installed in the central inlet of the casing; in addition, the side drain in the casing is made in the form of a drainage hole that connects to the internal cavity of the casing through a tapering hole at the inlet of which a seat designed for a ball valve mounted by means of a screw on the rod, a button is made on the other end of the rod protruding beyond the housing limit.

Description

A mechanical drain valve controlled by a button is designed for drainage of water or fire extinguishing agent in control units of fire automatic installations.

Known mechanical drain valve with control button (company LK ValvesAB (Garnisongatan 19 SE-25466 Helsinqborq Sweden).

The well-known drain valve, selected for the prototype, contains a cylindrical stainless steel body, has a central inlet made in the form of a threaded fitting and an outlet lateral steel drain pipe, has a rod located in the internal cavity of the body, the thickened end of which contacts the seat made through the ring seal in the cavity, the other thinned end of the rod is connected to a button mounted in the cavity with the possibility of reciprocating movements inside the strips by means of a spiral spring ty, while in the groove of the button is installed a second O-ring.

When the button is pressed, the inlet is connected to the drain pipe, thus draining.

In the free state of the button, through the spring and a thickened part of the stem with an O-ring, the cavity is locked, drainage stops.

A disadvantage of the known drain valve is its high manufacturing cost and low manufacturability, due to the manufacture of parts from expensive and difficult to process stainless steel.

The technical problem to which the utility model is directed is to reduce the complexity and cost of manufacturing a drain valve.

The technical problem can be solved by using cheaper structural materials and obtaining valve components at a lower cost.

This goal is achieved by the fact that the drainage valve is made mechanical and controlled by a button, has a cylindrical body with a central inlet, side drain, an internal cavity is made with a rod located in it with the possibility of reciprocating by means of a spiral spring and a button connected to the rod movement inside the cavity, according to the utility model, the housing is made of plastic mass, while a metal mortgage is installed in the central inlet of the housing, flax in the form of a threaded sleeve, in addition, the side drain in the housing is made in the form of a drainage hole that connects to the internal cavity of the housing through a tapering hole, at the entrance of which there is a seat designed for a ball valve mounted by means of a screw on the rod, which protrudes from the other The limit of the housing end of the rod is made button.

Valve components (stem, shutter) can be made of plastic mass.

The manufacture of the body, the stem, the shutter can be performed by molding in thermoforming machines.

The proposed utility model is explained in more detail using the drawing shown in FIG. 1, FIG. 2.

FIG. 1 is a sectional side view of the valve.

.FIG. 2 - view of the valve in perspective

.

The drain valve is a normally open locking device, consists of a plastic housing 1, in the inlet of the central opening 2 of which there is a metal embedded part 3 made in the form of a threaded sleeve, a cavity 4 is made along the central axis of the valve, in which a screw 5 is installed, which holds the plastic ball a shutter 6 on a plastic rod 7, at the opposite end of which a button 8 is made at the same time, while the rod passes through a tapering hole 9 having a valve seat 10 for tapering, tapering The hole is connected to the lateral drainage hole 11, between the shutter and the rear end part of the housing, a spiral metal spring 12 is installed on the rod.

The valve operates as follows.

In the initial state, by means of the spring 12, the shutter 5 is squeezed out of the seat 10, the extinguishing agent (water) freely passes through the inlet central hole 2, passes through the cavity 4, passes through the tapering hole 11 and drains through the lateral drainage hole 11.

To interrupt the drainage, the rod 7 is extended by means of a button 8 from the housing 1, the spring 12 is compressed, the shutter 6 rests on the seat 10, blocking the tapering hole 9, the drainage stops.

Thus, it can be argued that the proposed utility model solves the main technical problem of reducing the complexity of manufacturing and cost of the product.

Claims (2)

1. A drainage valve comprising a cylindrical body with a central inlet, side drain, also has an internal cavity with a rod located in it with the possibility of reciprocating movements inside the cavity by means of a spiral spring and a button connected to the rod, characterized in that the body made of plastic mass, while in the central inlet of the housing there is a metal mortgage, made in the form of a threaded sleeve, in addition, the side drain in the housing is made in the form of drains an important hole, which is connected to the internal cavity of the body through a tapering hole, at the entrance of which there is a seat designed for a ball valve mounted by means of a screw on the rod, on the other end of the rod protruding beyond the body end there is a button. 2. The drain valve according to claim 1, characterized in that the housing, the stem and the shutter are made of plastic mass.

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