RU87771U1 - CUT-OFF DEVICE FOR CAR WASHING UNITS - Google Patents

Abstract

The shut-off device of automobile washing installations, comprising a body, a cover and a locking element between them in the form of a diaphragm valve, characterized in that a diaphragm valve is used as a locking device, which, in turn, differs from the existing diaphragm valves in the shape of the bottom of the diaphragm cavity, made with a spiral rise from the level of the inlet to the seat level of the diaphragm valve, which prevents the formation of pockets for mud deposits, and the movement fluid is given a twist to the self-cleaning device.

Description

The utility model relates to pipe fittings, in particular, to shut-off devices with a diaphragm shut-off element, which can be used at the terminal sections of the pipeline network of automobile washing plants to automatically shut off them in case of malfunctions, leading to an emergency decrease in pressure in them while maintaining the operability of the remaining sections of the network.

Known is a shut-off valve with several rotary dampers with individual locks and released for locking by rods with stops, which are actuated by the pressure of the medium at a speed specified by a decelerating device of a throttle type (AS No. 362961 class F16K 3/04 12/20/1972).

Known devices that cut off (AC No. 21035579 class. F16K 3/04. 03/26/92 RF patent No. 2249138, 7 IPC: F16K 3/04 03/27/2005) in which the locking bodies are butterfly valves with one or two sensitive elements in the form of loaded spring elements of the rods.

The closest set of essential features, selected as a prototype, is a shut-off device (patent No. 2300 G88, IPC F-16R 17/04 09/27/2005) with a locking body in the form of a rotary shutter with a sealing surface mounted in it with a poppet valve with sensitive elements in the form of a rod loaded with springs.

With the positive qualities of the above shut-off valves and devices, including those adopted as a prototype, used mainly in the oil industry, there are drawbacks that impede their use in automobile washing plants operating with liquids having residual contamination during multi-turn use of washing liquid.

These disadvantages are:

- the possibility of rapid contamination of the locking device, since the cavity in which it is installed can serve as a pocket for mud deposits (mainly sand), which can interfere with the closing of the rotary valve, which closes under its own weight;

- the instability of the sensing element in the form of a rod and a locking device in the form of a hook and a groove, which are small in size and are located in a cavity of small volume, in which mud deposits can accumulate and interfere with the normal operation of the cut-off device;

- the opening of the rotary damper and its fixation in the open position after eliminating the causes of the emergency pressure drop does not occur automatically, but is done mechanically;

- the complexity of the design and the inability to self-clean from mud deposits.

The technical result is achieved by the fact that the shut-off device (Fig. 1) comprises a housing 1 with a cover 3, a locking member located between them in the form of a diaphragm valve, consisting of a diaphragm 2, loaded with a spring 5 and pressed against the valve seat 14. The compression of the spring 5 is regulated by a screw 7. The sub-diaphragm cavity 9 (FIG. 2) communicates with the inlet cavity 10 through the inlet 11 and with the outlet cavity 8 through the outlet 12 only when the diaphragm valve is open. The sub-diaphragm cavity 9 has a bottom 13 that spirals up one turn from the level of the upper edge of the inlet to the upper edge of the seat 14 of the diaphragm valve.

Shutoff device operation procedure

When the fluid pressure in the pipe network of the washing installation (FIG. 2) exceeds the minimum permissible value, the fluid from the outlet cavity 10 is supplied through the inlet 11 to the sub-diaphragm cavity 9. Under the action of the fluid pressure, the diaphragm 2 through the piston 4 acts on the spring 5, which is compressed, the diaphragm valve opens and provides a fluid supply to the terminal device for washing machines (hose with a nozzle, spray gun, brush spray, hose and others). The valve remains open as long as the fluid pressure remains above the value set by the adjusting screw 7. (Fig. 1).

In case of emergency pressure reduction in the end section of the pipeline network (Fig. 3) due to a malfunction of the hose, sealing device, malfunction or absence of the tip, brush, spray, hose, etc. to a value below the minimum allowable, diaphragm 2 under the action of spring 5 through the piston 4, drops to the upper level of the seat 14. The diaphragm valve is closed, the fluid supply to the faulty section of the pipeline network is stopped, while maintaining the necessary pressure in serviceable sections of the network, reduced unproductive fluid flow. The shape of the bottom 13 (FIGS. 1 and 3) of the sub-diaphragm cavity 9 in the form of a single coil of spiral with the rise from the upper level of the seat 14 of the diaphragm valve eliminates the presence of pockets for mud deposits and gives the fluid motion a swirl in order to self-clean the entire cavity 9.

Claims (1)

The shut-off device of automobile washing installations, comprising a body, a cover and a locking element between them in the form of a diaphragm valve, characterized in that a diaphragm valve is used as a locking device, which, in turn, differs from the existing diaphragm valves in the shape of the bottom of the diaphragm cavity, made with a spiral rise from the level of the inlet to the seat level of the diaphragm valve, which prevents the formation of pockets for mud deposits, and the movement fluid is given a twist to the self-cleaning device.