CN211231802U

CN211231802U - Air exhaust valve

Info

Publication number: CN211231802U
Application number: CN201922083297.3U
Authority: CN
Inventors: 刘卫星; 张国欢
Original assignee: Shanghai Huayan Fire Engineering Co ltd
Current assignee: Shanghai Huayan Fire Engineering Co ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-08-11
Anticipated expiration: 2029-11-27

Abstract

An exhaust valve adopts a double-lever transmission structure, and is cylindrical in shape; the valve cover is fastened with the valve body through bolts, the upper end of the hinge is fixed on the lower plane of the valve cover, the floating ball is fixed on the lower lever of the hinge, the main sealing ring is fixed on the upper rod of the hinge, the filter screen plug is plugged in a counter bore of a water inlet of the valve body and is fastened by a water inlet screw plug, and the lower plane of the valve cover is provided with an exhaust joint; the floating ball droops by gravity at ordinary times, and the exhaust joint is opened to exhaust; when the exhaust valve enters water, the water level rises, the floating ball moves upwards to drive the main sealing ring on the hinge to contact with the lower plane of the exhaust joint to realize sealing, which belongs to the field of fire-fighting water supply and solves the problems of violent fluctuation, easy deformation, frequent leakage and small exhaust amount of the conventional exhaust valve under the impact of high-speed airflow and water flow; the exhaust valve consists of a main sealing ring, a hinge, an exhaust joint, a water inlet plug screw, a filter screen, a valve cover, a plug, a floating ball and a valve body; has wide application prospect in high-rise buildings, large-scale logistics storage, electric power and petrochemical industry.

Description

Air exhaust valve

Technical Field

The utility model relates to an exhaust valve used in the fire-fighting industry, which adopts a double-lever transmission structure and has a cylindrical shape; air when getting rid of the initial water that fills of pipe network and get rid of the aquatic dissolved air in real time, close sealedly when the water level rises, belong to the fire control water supply field.

Background

The conventional exhaust valve fluctuates violently under the impact of airflow and water flow, a single lever mechanism is easy to deform, leakage often occurs, and the exhaust volume is small; the exhaust valve can not meet the application requirements of high-rise buildings, large logistics storage, electric power and petrochemical industry.

Disclosure of Invention

The problems that a conventional exhaust valve fluctuates violently under the impact of high-speed airflow and water flow, a single lever mechanism is easy to deform, leakage often occurs, and the exhaust amount is small are solved; the utility model provides an exhaust valve, which adopts a double-lever transmission structure, the buoyancy is increased by double levers, and the sealing performance is ensured; the water inlet screw plug is designed into a plurality of inclined hole outlets, so that the inflow is decomposed into a plurality of strands of inclined flows which enter the valve body along the inner wall of the valve cavity, and the impact of high-speed airflow and water flow on the floating ball is relieved; the exhaust volume reaches 280L/min; the utility model discloses have extensive application prospect in high-rise building, large-scale logistics storage, electric power, petrochemical.

The utility model discloses a following technical scheme realizes:

the exhaust valve consists of: the valve comprises a valve cover 1, an exhaust joint 2, a hinge 3, a valve body 4, a floating ball 5, a water inlet screw plug 6, a filter screen 7, a plug 8, a bolt 9, a main sealing ring 10, an O-shaped ring 11 and an air outlet joint 12; a double-lever transmission structure is adopted, and the shape is cylindrical; the valve cover is fastened with the valve body through bolts and sealed by an O-shaped sealing ring, the upper end of the hinge is fixed on the lower plane of the valve cover, the floating ball is fixed on the lower lever of the hinge, the main sealing ring is fixed on the upper rod of the hinge, the filter screen plug is plugged in a counter bore of a water inlet of the valve body and fastened by a water inlet screw plug, the lower plane of the valve cover is provided with an exhaust joint, and the upper plane of the valve cover is provided with an; the floating ball droops by gravity at ordinary times, and the exhaust joint is opened to exhaust; when the exhaust valve enters water, the water level rises, the floating ball moves upwards, and the main sealing ring on the hinge is driven to be in contact with the lower plane of the exhaust joint to realize sealing.

The utility model has the advantages that: the double-lever transmission structure is adopted, the buoyancy is increased by the double levers and is 5 times greater than the sealing force of a single-lever mechanism, and the sealing under different water inlet pressures and water levels is met; the water inlet screw plug is designed into a plurality of inclined hole outlets, so that the inflow is decomposed into a plurality of strands of inclined flows, and the inclined flows enter the valve body along the inner wall of the valve cavity, and the impact of the airflow and the water flow on the floating ball is relieved; the inner diameter of the exhaust is phi 12mm, and the exhaust volume reaches 280L/min; the water inlet is provided with a filter screen, so that impurities are prevented from entering the valve cavity and causing the floating ball to lose effectiveness.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a structural section view of the present invention.

Fig. 2 is a sectional view of the water inlet screw plug of the present invention.

Fig. 3 is a top view of the water inlet screw plug of the present invention.

Fig. 4 is a sectional view of the main seal ring of the present invention.

Detailed Description

The exhaust valve consists of: the valve comprises a valve cover 1, an exhaust joint 2, a hinge 3, a valve body 4, a floating ball 5, a water inlet screw plug 6, a filter screen 7, a plug 8, a bolt 9, a main sealing ring 10, an O-shaped ring 11 and an air outlet joint 12; the valve cover is fastened with the valve body through bolts and sealed by an O-shaped sealing ring, the upper end of the hinge is fixed on the lower plane of the valve cover through bolts, the floating ball is fixed on the lower lever of the hinge through bolts, the main sealing ring is fixed on the upper rod of the hinge through bolts, the filter screen plug is plugged in a counter bore of a water inlet of the valve body and fastened by a water inlet screw plug, the bottom surface of the valve body is provided with a plug, the lower plane of the valve cover is provided with an exhaust joint and sealed by the O-shaped sealing ring, and the upper; at ordinary times, the floating ball droops under the action of gravity, the lower lever moves downwards to drive the upper lever and the main sealing ring to move downwards, and the exhaust joint opens to exhaust; when the exhaust valve enters water, the water level rises, the floating ball moves upwards, the lower lever moves upwards to drive the upper lever and the main sealing ring to move upwards, and the main sealing ring is contacted with the lower plane of the exhaust joint to realize sealing; the utility model provides a technical scheme that its technical problem adopted is: the core component of the exhaust valve, namely the water inlet screw plug, is designed into a plurality of inclined hole outlets, the inflow is decomposed into a plurality of strands of inclined flows, and the inclined flows enter the valve body upwards along the inner arc wall of the valve cavity, so that the impact of air flow and water flow on the floating ball is relieved, and the service life is prolonged; the double-lever force transmission mechanism is adopted to expand the buoyancy of the floating ball twice, the sealing force is enlarged by 5 times compared with that of a single-lever mechanism, and the large-caliber exhaust and sealing targets are realized under different water inlet pressures and water levels; the main sealing ring is made of compression molding rubber of an embedded cylinder, the outer diameter of the embedded cylinder is phi 9mm, a straight thread is processed at the center of the embedded cylinder, a groove is processed on the outer cylindrical surface to enhance the rubber coating bonding force, and a sealing groove is arranged on the upper plane of the main sealing ring, so that the sealing contact surface with the lower plane of the exhaust joint is reduced, and the purpose of double sealing is achieved; a filter screen is arranged at the water inlet of the valve body, so that impurities are prevented from entering the valve cavity and causing the operation failure of the floating ball; the inner diameter of the air outlet joint reaches phi 12mm, which far exceeds the air displacement of a conventional exhaust valve, and plugs are arranged on the bottom surface of the valve body and the top surface of the valve cover, so that the valve cavity can be conveniently flushed to remove accumulated dirt.

1) The valve body and the valve cover are made of nodular cast iron, the bolt, the hinge, the filter screen, the water inlet screw plug, the air outlet joint and the plug are made of stainless steel, the exhaust joint is made of silicon brass, the floating ball is made of methyl pentene, and the main sealing ring and the O-shaped ring are made of nitrile rubber;

2) working pressure range: 0.14MPa to 1.6 MPa;

3) rated displacement: 280L/min;

4) and (3) sealing test: 3.2 MPa;

5) suitable media are: water;

6) ambient temperature: 4-70 ℃;

7) the installation mode is as follows: vertically and upwards mounting;

8) water inlet interface: rc 1'.

Claims

1. An exhaust valve is characterized in that a double-lever transmission structure is adopted, and the shape of the exhaust valve is cylindrical; the exhaust valve consists of: the water inlet valve comprises a valve cover (1), an exhaust joint (2), a hinge (3), a valve body (4), a floating ball (5), a water inlet plug screw (6), a filter screen (7), a plug (8), a bolt (9), a main sealing ring (10), an O-shaped ring (11) and an air outlet joint (12); the valve cover is fastened with the valve body through bolts and sealed by an O-shaped sealing ring, the upper end of the hinge is fixed on the lower plane of the valve cover, the floating ball is fixed on the lower lever of the hinge, the main sealing ring is fixed on the upper rod of the hinge, the filter screen plug is plugged in a counter bore of a water inlet of the valve body and fastened by a water inlet screw plug, the lower plane of the valve cover is provided with an exhaust joint, and the upper plane of the valve cover is provided with an; the floating ball droops by gravity at ordinary times, and the exhaust joint is opened to exhaust; when the exhaust valve enters water, the water level rises, the floating ball moves upwards, and the main sealing ring on the hinge is driven to be in contact with the lower plane of the exhaust joint to realize sealing.

2. The exhaust valve according to claim 1 wherein the inlet plug has a lower section with straight threads and an upper section with hexagonal surface with a central straight hole and 6 holes drilled in the hexagonal surface.