RU199303U1 - ASSEMBLY MODULE FOR AIR SPRINKLER CONTROL UNITS - Google Patents

Abstract

The prefabricated module for sprinkler air control units is designed to work in automatic fire extinguishing installations, consisting of a body and an adjacent block, made of cast plastic mass, having connecting holes and channels and between the holes, threaded sleeve inserts are installed in the connecting holes, on the outer cylindrical surface of each the mortgage is made of alternating annular protrusions and grooves with a sealing layer applied on each of them, which is made of an elastomeric substance.

Description

The prefabricated module for air sprinkler control units is designed to work in automatic fire extinguishing installations.

From the prior art, a prefabricated module for sprinkler control units is known, consisting of a housing and an adjacent block, having connecting holes for installing an accelerator or an electrovalve, two pressure gauges with a tap, an air supply line, with the possibility of connecting a pressure control unit, a filter tap, when At the same time, a signaling device is mounted in the module housing, consisting of two pressure alarms connected to each other by a channel with an exit through the signal channel into the cavity of the signal valve, while a cavity is made between the module case and the adjacent block, in which a check valve is located, which connects the tap through internal channels - a filter installed in the working line of the unit, with channels of the signal valve, the body and the adjacent block are made of cast plastic mass with pre-installed in the connecting holes in the process of casting threaded coupling inserts according to item RU # 190186, taken as a prototype.

During the operation of a known module, taken as a prototype, at the interface between the plastic case and the metal embedded in the connecting hole, minor water leaks may occur, caused by shrinkage and aging of the plastic and (or) due to unequal changes in the linear dimensions of the body (adjacent block) and the embedded, made of dissimilar materials and having unequal coefficients of linear expansion arising under the influence of changes in ambient temperature.

The objective of the utility model is to increase the tightness of the module connecting holes and to reduce the likelihood of leaks of fire extinguishing agent (water).

The task is solved by creating a modular assembly for sprinkler air control units, consisting of a body and an adjacent block, made of cast plastic mass, having connecting holes and channels between the holes, between the body and the adjacent block, a cavity is made in which a check valve is installed, in the connecting holes threaded sleeve inserts are installed, according to the utility model, on the outer cylindrical surface of each insert there are alternating annular protrusions and grooves with a sealing layer applied on each of them, which is made of an elastomeric substance and forms a corrugated elastic sleeve.

The module can have annular protrusions and grooves made of an Ω-shaped (omega-shaped) profile.

The utility model is explained in more detail using FIG. 1.

FIG. 1 General view of the module in section from the front with I.

The prefabricated module consists of a body 1 of a body and an adjacent block 2, cast from plastic with connecting holes 3 and channels 4, between the body and the block there is a cavity 5, in which a check valve 6 is installed, the connecting holes contain embedded 7, on the outer cylindrical surfaces the embedded ones are made alternating between, for example, Ω-shaped annular protrusions 8 and grooves 9 with a sealing layer 10 applied on each of them, which is made of an elastomeric substance, while in the process of manufacturing the plastic parts of the module it is transformed into a corrugated elastic sleeve.

The plastic parts of the prefabricated module (housing 1 and adjacent block 2) are made in automatic press machines by means of molds, in which threaded coupling inserts 7 are installed, on the outer cylindrical surfaces of which, namely on the projections 8 and on the grooves 9, they are preliminarily applied with a thin layer sealing elastomeric material, form a layer 10. Further, during the manufacture of the body and the adjacent block, the molds are filled with molten plastic mass by injection molding, ensuring tight filling of the molds, while the elastomeric material is vulcanized by high temperature and temporary holding under pressure.

Thus, between the insert 1 and the plastic mass of the body 1 (or the adjacent block 2), a corrugated elastic sleeve is created at the place of application of the elastomeric layer 10.

Due to the elastic properties of the sleeves, which compensate for the undesirable shrinkage of the plastic mass and unequal changes in the linear dimensions of the body 1 (adjacent block 2) and the embedded 7, which are made of dissimilar materials, that stink during operation, a higher degree of sealing of the connecting holes 3 is achieved in comparison with the prototype, the likelihood of unauthorized leaks of extinguishing agent is reduced.

The execution of elastic corrugated sleeves between the grooves and protrusions at the junctions of the plastic case and the adjoining block with metal inserts, tightly adhering on one side to the metal insert, and on the other hand to the plastic product, ensures the fulfillment of the task

Claims (2)

1. A prefabricated module for sprinkler air control units, consisting of a body and an adjacent block, made of cast plastic, having connecting holes and channels between the holes, a cavity is made between the body and the adjacent block in which a check valve is installed, threaded holes are installed in the connecting holes Coupling mortgages, characterized in that on the outer cylindrical surface of each mortgage are made alternating annular protrusions and grooves with a sealing layer applied to each of them, which is made of an elastomeric substance and forms a corrugated elastic sleeve. 2. The modular assembly according to claim 1, characterized in that the annular protrusions and grooves are made of an Ω-shaped, omega-shaped profile.

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