WO2011056094A2

WO2011056094A2 - Fire valve

Info

Publication number: WO2011056094A2
Application number: PCT/RU2010/000605
Authority: WO
Inventors: Михаил Викторович ГУСЕВ; Анатолий Васильевич СОРОКИН; Георгий Николаевич КОРОТКЕВИЧ
Original assignee: Общество С Ограниченной Ответственностью "Апoгeй"
Priority date: 2009-10-26
Filing date: 2010-10-19
Publication date: 2011-05-12
Also published as: WO2011056094A3

Abstract

A fire valve comprises a housing with an inlet connecting pipe and an outlet connecting pipe which are interconnected via the transfer port of a seat. A shut-off mechanism in the form of a screw spindle is situated inside the housing. A flywheel is mounted on one end of the spindle and a slide valve is attached to the other end. The slide valve consists of a disc-shaped metal member and an elastic sealing member which closes the transfer port when the valve is in the closed position. A cap is provided in the form of a flange with a central through hole and a bush with another sealing member, which are situated in the upper part of the cap, said upper part being made up of hexahedral and cylindrical projections. The axes of the inlet connecting pipe and the outlet connecting pipe are situated at an angle α = 90° - 130°. The relation of the height H of the housing to the outside diameter D of the housing satisfies the condition H/D = 0.85 – 1.25. The upper part of the cap is provided with an inside chamber that allows for the increased stroke of the screw spindle when the valve is opened. This design makes it possible to reduce the dimensions and weight of the fire valve.

Description

FIRE VENT The utility model relates to the field of mechanical engineering and can be used to supply fluid to consumers, for example, in a fire water supply system, and in domestic facilities.

Known valve [1], comprising a housing with inlet and outlet channels communicating with each other by a spherical-shaped chamber with through holes, and a locking mechanism located in the housing in the form of a screw spindle, a flywheel is installed at one end of the disk and a contact spool is installed at the other end with a saddle and covering the bypass hole in the closed position of the valve, while the screw spindle is screwed into the cover, tightly wrapped in the housing, between the inner surface of the cover and the spindle is installed A nut clamped by a threaded element, a sealing washer is fixed to the threaded shank of the spool, the disk spool is fixed to the lower end of the spindle so that it has freedom of movement in the vertical and horizontal planes and free rotation relative to the spindle.

A disadvantage of the known valve is the increased rate of metal consumption for the product and increased weight, due to the imperfect design of the valve. The closest technical solution to the proposed utility model is a well-known valve [2], comprising a housing with inlet and outlet channels communicating with each other bypass hole bounded by a seat, and a locking mechanism located in the housing in the form of a screw spindle, at one end of which is installed a flywheel, and on the other an annular collar is made with a disc slide valve movably mounted on it having a threaded shank on which a shock-tight sealing an element in contact with the seat and covering the bypass hole in the closed position of the valve, while the retainer is made in the form of a flat washer with a central threaded hole, and on the threaded surface of the shank at a distance from the disk plane not exceeding the thickness of the shock-absorbing and sealing element , an annular groove is made, the diameter of which is equal to the inner diameter of the thread of the shank, and the width is proportional to the thickness of the retainer.

The disadvantage of this valve is the increased consumption of metal in the manufacture of such a valve and, as a result, an increase in the dimensions and weight of the product. This is due to the suboptimal design of the known valve.

In the design of the valve, the spindle, spool, locking elements are made of expensive anticorrosive non-ferrous metals, for example, brass. Moreover, of great importance in large-scale and mass production is the reduction norms of metal consumption in the product, which, ultimately, affects the cost of production.

The technical result, which consists in eliminating the noted drawback, namely, in reducing the consumption of metal in the product by improving the design, is achieved in the proposed fire valve, comprising a housing with inlet and outlet fittings communicating with each other through the bypass hole of the seat, and a shut-off located in the housing a mechanism in the form of a screw spindle, on one end of which a flywheel is mounted, and a spool consisting of a disk metal element and an elastic sealing element is fixed on the other a cap covering the bypass hole in the closed position of the valve, a cover made in the form of a flange with a through central hole, a sleeve with another sealing element located in the upper part of the cover formed by hexagonal and cylindrical protrusions, so that the axes of the inlet and outlet fittings are angled a = 90 ° - 130 °, while the ratio of the housing height H to the outer diameter D of the housing satisfies the condition H / D = 0.85 - 1.25, while the inner cavity of the upper part of the lid is configured to provide I increased the stroke of the screw spindle when opening the valve.

The technical result is also achieved by the fact that a flange is made along the edge of the bypass hole in contact with the elastic sealing element in the closed position of the valve. In this case, the disk metal element of the spool is fixed to the end of the screw spindle by crimping.

The valve design has two options:

- inlet and outlet fittings are made with external thread. - the inlet fitting is made with an internal thread, and the outlet fitting is made with an external thread.

The technical result is also achieved by performing a valve body:

- from cast iron;

- made of brass.

- made of nickel-plated brass.

Reducing the weight of the valve while maintaining the necessary technical characteristics is achieved by the fact that:

- when the valve is made of cast iron, the wall thickness of the housing is 3.3 - 3.7 mm.

when the valve is made of brass or brass with a nickel coating, the wall thickness of the body is 2.6 - 3.0 mm.

The essence of the utility model is illustrated by drawings, where:

- in FIG. 1 shows the design of the valve assembly with an inclined outlet fitting (a> 90 °);

- in FIG. 2 shows the design of the valve assembly with a horizontal outlet fitting (a = 90 °).

Fire valve (Fig. 1, 2) contains a housing 1 with input 2 and output 3 fittings communicating with each other through the bypass hole 4 of the saddle 5. In the housing 1, the locking mechanism is made in the form of a screw spindle 6, on one end of which a flywheel 7 is mounted, fixed by a screw 8, and on the other is fixed a spool consisting of a disk metal element 9 and an elastic sealing element 10 that overlaps the bypass hole 4 in the closed position gates.

The housing 1 is closed by a cover 1 1, made in the form of a flange with a through central hole. On the upper surface of the flange, hexagonal 12 and cylindrical 13 protrusions are made. The hexagonal protrusion 12 serves to wrap (or unscrew) the cap 1 1 during assembly (disassembly) of the valve, and a sleeve 14 with a sealing element 15, designed to seal the valve, is screwed into the cylindrical protrusion 13. Moreover, the inner cavity of the upper part of the cover 1 1 is configured to provide an increased stroke of the screw spindle when opening the valve due to the presence of free space 16 for the thread to exit when the screw spindle 6 is turned off.

A sleeve 17 with an internal thread designed for screw movement of the spindle 6 is pressed into the cover 1 1.

The axes of the input 2 and output 3 fittings are located at an angle a = 90 ° - 130 °.

A flange 18 is made along the edge of the bypass hole 4, which contacts in the closed position of the valve with the elastic sealing element 10, which ensures reliable closure of the valve inlet channel. The sealing element 10 is fixed to the disk metal element 9 with a nut 19.

The ratio of the height H of the housing 1 to its outer diameter D satisfies the condition H / D = 0.85 - 1.25, which provides wide possibilities in the manufacture of valves depending on the specific operating conditions.

The disk metal element 9 of the spool is fixed to the end of the screw spindle by crimping.

The following design options are possible:

a) input 2 and output 3 fittings are made with external thread.

b) the inlet fitting 2 is made with an internal thread, and the outlet nozzle 3 is made with an external thread.

The valve body 1 can be made of cast iron, brass or nickel-plated brass.

At the same time, in a cast iron valve, the wall thickness of the body is 3.3 - 3.7 mm, and in a brass valve the wall thickness of the body is 2.6 - 3.0 mm.

The proposed valve operates as follows.

The inlet fitting 2 is connected to a water supply system (not shown in the drawings). A hose is screwed to the outlet 3 fitting (not shown in the drawings).

In the initial state, the locking mechanism, consisting of a screw spindle 6 and a spool made of a disk metal element 9 and an elastic sealing element 10, overlaps the bypass hole 4 in the seat 5. The spool has the ability to rotate around the axis, as well as slightly change the angle relative to the vertical axis to ensure a snug fit to the seat. Since a flange 18 is made along the edge of the bypass hole 4 in contact with the sealing element 10, the reliability of closing the valve inlet channel is increased.

To open the valve, the locking mechanism is rotated using the flywheel 7. The screw spindle 6, interacting with the internal thread of the sleeve 17 is moved up together with the spool. In this case, the bypass hole 4 is opened and water from the system enters the internal cavity of the valve and then through the outlet nipple 3 into the fire hose. The water flow rate is set by the height of the spindle 6. The internal cavity of the upper part of the cover AND is made with the possibility of providing an increased stroke of the screw spindle 6 due to the presence of free space 16 for the thread to exit when the valve is opened, the spool rises to the maximum possible height (unlike from known valves). This allowed to reduce the dimensions of the valve body - both the height H and the outer diameter D.

In this case, valves with a minimum value of the ratio H / D = 0.85 are used when during operation a valve design with a minimum height and a maximum diameter is required, and valves with a maximum value of the ratio H / D = 1, 25 are used when a valve design with maximum height and minimum diameter is required during operation. These conditions are determined by the specific requirements of the customer.

The axes of the inlet and outlet fittings are located at an angle a

= 90 ° - 130 ° (also determined based on requirements at the installation site. The indicated range of angle a is determined based on actual operating conditions. A valve with an angle a> 90 ° is shown in Fig. 1, and a valve with an angle a = 90 ° is shown in Fig. 2.

The indicated ranges of values of H / D and a made it possible to create a wide range of valves that can be used not only for fire fighting, but also in domestic conditions for various water flows.

To replace a worn sealing element 10, it is necessary to unscrew the cover 1 1 with a wrench using a hexagonal protrusion 12.

When the cover 1 1 is completely unscrewed, the nut 19 is unscrewed, the worn sealing element 10 is removed and replaced with a new one.

The proposed valve is manufactured at a machine-building enterprise in serial production on universal equipment using materials produced by domestic industry.

For the manufacture of the housing 1, cast iron or brass or nickel-plated brass are used. In the manufacture of the valve from cast iron the wall thickness of the housing is 3.3 - 3.7 mm. In the manufacture of a valve made of brass or brass with a nickel coating, the wall thickness of the body is 2.6 - 3.0 mm.

For spindle 6, brass is used. For the manufacture of flywheel 7, structural steel may be used. For the sealing element 10, wear-resistant rubber is used.

The proposed valve design allowed to reduce the material consumption of products from 10% to 20% in relation to known similar products of the same purpose.

Information sources:

1. RF patent Jfe 85597, IPC F16K 1/02 of 02/09/2009

2. RF patent JVb 39667, IPC F16K 1/02 of 08/08/2004

Claims

CLAIM

1. Fire valve comprising a housing with inlet and outlet fittings communicating with each other through the bypass hole of the seat, and a shut-off valve housed in the housing

5 a mechanism in the form of a screw spindle, on one end of which a flywheel is mounted, and on the other a spool is fixed, consisting of a disk metal element and an elastic sealing element that overlaps the bypass hole in the closed position of the valve, a cover made in the form of a flange with

Through a central hole, a sleeve with another sealing element located in the upper part of the cover formed by hexagonal and cylindrical protrusions, the axes of the inlet and outlet fittings are located at an angle a = 90 ° - 130 °, while the ratio of the height H of the housing to

15, the outer diameter D of the housing satisfies the condition H / D = 0.85 - 1, 25, and the inner cavity of the upper part of the cover is configured to provide increased travel of the screw spindle when opening the valve.

2. Fire valve according to claim 1, characterized in that a flange is made along the edge 0 of the bypass hole in contact with the elastic sealing element in the closed position of the valve.

3. Fire valve according to claim 1, characterized in that the disk metal element of the spool is fixed to the end of the screw spindle by crimping.

5 4. Fire valve according to claim 1, characterized in that the input and output fittings are made with external thread.

5. Fire valve according to claim 1, characterized in that the inlet fitting is made with an internal thread and the outlet fitting is made with an external thread.

6. Fire valve according to claim 1, characterized in that the housing is made of cast iron.

7. Fire valve according to claim 1, characterized in that the housing is made of brass.

8. Fire valve according to claim 6, characterized in that the housing is made with a nickel coating.

9. The fire damper according to claim 5, characterized in that the wall thickness of the casing is 3.3 - 3.7 mm.

10. Fire valve according to claim 6 and claim 7, characterized in that the wall thickness of the housing is 2.6-3.0 mm.