CN211774171U

CN211774171U - Outdoor antifreezing direct-buried fire hydrant

Info

Publication number: CN211774171U
Application number: CN201922267420.7U
Authority: CN
Inventors: 张雪莲; 张玉霞; 吴凡; 宋文德
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-10-27
Anticipated expiration: 2029-12-17

Abstract

The application provides an outdoor direct-burried type fire hydrant that prevents frostbite, its fire hydrant body lower part and fire service water supply line intercommunication, install pneumatic valve accuse portion on the fire hydrant body, the chamber of leaking on inlet chamber and the inlet chamber is separated by inlet valve seat baffle and sluicing valve seat baffle in the fire hydrant body, inlet valve accuse case and sluicing accuse case are fixed respectively in the bottom and the middle part of pneumatic valve rod, along with pneumatic valve rod longitudinal movement in turn with the inlet valve seat of inlet valve seat baffle, the sluicing disk seat sealing fit of sluicing valve seat baffle. The technical scheme is characterized in that the water inlet valve part and the water drain valve part are linked by compressed air, accumulated water in the whole set can be automatically drained, conditions are created for full underground direct-buried installation, the technical problem of freezing prevention in high latitude areas is solved, and the device becomes a single-type product suitable for different frozen soil area.

Description

Outdoor antifreezing direct-buried fire hydrant

Technical Field

The application relates to fire service water supply facilities, especially relates to outdoor fire hydrant valve control system.

Background

The outdoor fire hydrant is a hydrant for providing fire extinguishing water for peripheral fire fighting ranges in a fire safety system, and is mainly an outdoor ground fire hydrant and an outdoor underground fire hydrant according to different installation positions. However, in high latitude areas, weather is cold in winter, the duration is long, once the outdoor fire hydrant is frozen, the hydrant body is frozen and cannot be opened in time to supply fire extinguishing water, and life and property losses of the outdoor fire hydrant cannot be estimated. The existing anti-freezing solution of the outdoor fire hydrant in the high latitude areas mainly comprises the following steps: firstly, a heat preservation cover is added on the outer part, but the heat preservation effect is poor, and in order to realize rapid water taking, the heat preservation cover cannot be connected and fixed by a screw structure, is easy to be damaged maliciously, and increases the volume of the fire hydrant; secondly, a heat insulation layer is additionally arranged to wrap a heat insulation material layer for the fire hydrant, and the method cannot avoid the phenomenon of freezing injury in a low-temperature area with long duration; thirdly, an underground fire hydrant well is arranged, so that the collision damage of objects running on the ground to the fire hydrant well is avoided, after water is taken each time, fire fighters are required to go into a narrow well bottom, accumulated water in the cavity of the fire hydrant is emptied through a water outlet, the manual operation is complicated, the safety risk exists, the application cost is increased, the linkage cannot be realized mainly due to the structural reason, most of accumulated water in the cavity can only be emptied through a drainage device additionally arranged in the fire hydrant, but the drainage effect is unsatisfactory, and the freezing damage can be caused due to incomplete drainage; in order to overcome the technical problem of incomplete drainage, the fire hydrant valve can be mechanically controlled on the ground, the fire hydrant is lengthened, the structure part of the fire hydrant, which can accumulate water, extends to the position below the frozen soil layer, but the valve rod can be lengthened greatly, the mechanical matching process difficulty is greatly increased, the damage probability is greatly increased, and the product specifications of areas with different depths of the frozen soil layer are different, so that the product cost is improved.

Disclosure of Invention

The invention aims to solve the technical problem that the existing outdoor fire hydrant freezes in northern cold winter, and more importantly, the core control structure is a standardized product, so that the outdoor anti-freezing direct-buried fire hydrant can be suitable for areas with various frozen soil layer depths, and is provided.

The application provides an outdoor freeze-proof direct-burried type fire hydrant technical scheme, its main technical content is: an outdoor anti-freezing direct-buried fire hydrant, the lower part of a fire hydrant body is communicated with a fire-fighting water supply pipeline, a cavity in the fire hydrant body is divided into a water inlet cavity and a water drainage cavity above the water inlet cavity by a water inlet valve seat clapboard and a water drainage valve seat clapboard, a water outlet pipe is communicated with the water inlet cavity, and a water drainage pipe is communicated with the water drainage cavity; the pneumatic valve control part is arranged on the fire hydrant body and comprises a pneumatic valve control chamber, a pneumatic diaphragm and a pneumatic valve rod, the pneumatic diaphragm forms an air chamber on the pneumatic valve control chamber and the diaphragm, the high-pressure air pipe is communicated with the air chamber, the pneumatic valve rod is sleeved with a reset spring, the top end of the pneumatic diaphragm is fixedly connected with the pneumatic diaphragm, the water inlet control valve core and the water drain control valve core are respectively fixed at the bottom end and the middle part of the pneumatic valve rod and are alternatively matched with a water inlet valve seat of the water inlet valve seat partition plate and a water drain valve seat of the water drain valve seat partition plate in a sealing mode along with the longitudinal.

In one preferable technical means of the whole technical scheme, the fire hydrant body is a valve body, the lower port of the valve body is communicated with a fire-fighting water supply pipeline, a water inlet valve seat and a water discharge valve seat are arranged in the valve cavity, the valve cavity is divided into a water inlet valve cavity and a water discharge valve cavity above the water inlet valve cavity, a water outlet pipe is communicated with the water inlet valve cavity, a water discharge pipe is communicated with the water discharge valve cavity, a water inlet control valve core and a water discharge control valve core on the pneumatic valve rod move longitudinally along with the pneumatic valve rod and are alternately in sealing fit with the water inlet valve seat and the water discharge.

According to the technical scheme of the outdoor anti-freezing direct-buried fire hydrant disclosed by the patent application, the water inlet valve part is linked with the water drain valve part, so that accumulated water in the whole fire hydrant can be automatically drained, and conditions are created for underground installation; therefore, the product can be completely buried under the frozen soil layer, and even if partial water exists in the structure, the freezing problem can not occur due to the heat preservation effect under the frozen soil layer; the pneumatic operation eliminates the technical problems of low mechanical bolt opening action, damage between mechanical matching and product damage rate caused by long-term lack of dynamic running-in, and reliable and rapid action reaction; the underground installation also avoids the obstacle of the ground operation object; more importantly, the pneumatic linkage structure is more suitable for being manufactured according to a valve structure, the pneumatic linkage structure of the water inlet valve part and the water discharge valve part is adopted, the pneumatic valve rod does not need to reach the length of 1.5 meters, 2 meters or even longer like the existing various products, the integral volume of the product is greatly reduced, the size of the valve product can be controlled, the pneumatic linkage structure is particularly suitable for single-model products in different frozen soil layer areas, and the production pressure for providing different-model products for the production in different areas is reduced for production enterprises.

Drawings

Fig. 1 is a structural view of the installation and use of the present patent application.

Fig. 2, fig. 3, fig. 4 and fig. 5 are sectional views of the present patent application, illustrating a state of fire waiting, a state of fire extinguishing and water supply, and a state of water drainage.

Detailed Description

The patent application discloses an outdoor freeze-proofing direct-burried fire hydrant, its one embodiment structure each shows in the attached drawing, and its fire hydrant body 5 lower port passes through water net connecting pipe fitting 6 and communicates with fire service water supply line 7. The cavity in the fire hydrant body 5 is divided into a water inlet cavity 17 and a water drainage cavity 18 above the water inlet cavity 17 by a water inlet valve seat partition plate 15 and a water drainage valve seat partition plate 16, the water outlet pipe 10 is communicated with the water inlet cavity 17, and the water drainage pipe 4 is communicated with the bottom of the water drainage cavity 18.

The upper part of the fire hydrant body 5 is provided with a pneumatic valve control part.

The pneumatic valve control part comprises a pneumatic valve control chamber 19, a pneumatic diaphragm 2 and a pneumatic valve rod 12, wherein the pneumatic diaphragm 2 is a soft rubber material layer, the edge of the pneumatic diaphragm is sealed and tightly pressed at the flange connecting port between the cover body of the pneumatic valve control chamber 19 and the box body, an airtight air chamber 20 is formed on the pneumatic diaphragm 2 of the pneumatic valve control chamber 19, an air inlet 14 on the cover body is connected with a high-pressure air pipe 21, so that the high-pressure air pipe 21 is communicated with the air chamber 20, and the box body is provided with an air leakage hole 3. The upper end of the pneumatic valve rod 12 penetrates through the pressing plate and is fixedly connected to the pneumatic diaphragm 2 in threaded fit with the nut, and the rod is sleeved with a return spring 13. The drainage cavity part of the embodiment is divided into a drainage connector 1, a lower end flange is fixedly and hermetically connected with a flange on the periphery of a drainage valve seat partition 16 at the upper end of a fire hydrant body 5, an upper end flange is fixedly and hermetically connected with the lower end of a pneumatic valve control chamber 19, and a mounting seat plate 30 of a return spring 13 in the drainage connector 1 divides a lower drainage cavity 18.

The pneumatic valve rod 12 downwards penetrates through the installation seat plate 30, the drain valve seat partition plate 16 and the water inlet valve seat partition plate 15, the water inlet control valve core 8 and the drain valve core 11 are respectively fixed at the bottom end and the middle part of the pneumatic valve rod 12 and are alternately in sealing fit with the water inlet valve seat of the water inlet valve seat partition plate 15 and the drain valve seat of the drain valve seat partition plate 16 along with the longitudinal movement of the pneumatic valve rod 12.

As shown in figure 4, the product is buried under the frozen soil layer, the lower part of the product is communicated with a fire-fighting water supply pipeline 7, a water outlet pipe 10 and a high-pressure air pipe 21 are connected with the product and then extend to the lower part of a connector mounting cover on the ground, the pipe end of the high-pressure air pipe 21 is connected with an air nozzle 22, and the water outlet pipe 10 is connected with a connector 24.

In the use state to be extinguished as shown in fig. 3, under the dual actions of the water pressure of the fire-fighting water supply pipeline 7 and the resilience force of the return spring 13, the pneumatic diaphragm 2 contracts, and the water inlet control valve core 8 on the pneumatic valve rod 12 closes the water inlet valve seat of the water inlet valve seat partition 15, at this time, the valve of the water discharge cavity 18 is in an open state, and the water of the fire-fighting water supply pipeline 7 is limited outside the fire hydrant water inlet cavity 17; when fire fighting connection water is needed, a gas source pipe of compressed gas equipment such as a high-pressure inflator or an air pump is connected with an air tap 22, the generated compressed gas enters an air chamber 20 through a high-pressure gas pipe 21, when the air pressure is gradually greater than the sum of the water pressure of a fire fighting water supply pipeline 7 and the resilience force of a return spring 13, a pneumatic valve rod 12 starts to be pushed downwards, water enters an inlet cavity 17, the pneumatic valve rod 12 rapidly moves downwards when the balance is broken through in the change of the increase of the air pressure and the gradual reduction of the resistance, a drain control valve core 11 is rapidly closed with a drain valve seat of a closed drain valve seat partition plate 16, pressure water supply of the fire fighting water supply pipeline 7 only flows out through a water outlet pipe 10, and fire fighting water is supplied through a high-pressure water gun and; after putting out a fire, the air pressure of the air chamber 20 is released, under the dual actions of the elasticity of the reset spring 13 and the water pressure of the fire-fighting water supply pipeline 7, the pneumatic valve rod 12 is pushed upwards, the water drainage control valve core 11 is opened until the water inlet control valve core 8 completely seals the water inlet cavity 17, the water stored in the water outlet pipe 10 which is higher than the water drainage pipe 4 is released, and even if a small part of water is stored, the whole body is positioned below a frozen soil layer, so that the bolt body cannot be frozen.

According to the structure of the technical scheme, the water inlet valve part and the water discharge valve part are linked to realize automatic accumulated water discharge, no external mechanical control is needed except for communication and applied air pressure, so that conditions are created for integral all-underground installation, and conditions are created for integral small volume.

Claims

1. An outdoor antifreezing direct-buried fire hydrant, the lower part of a fire hydrant body (5) is communicated with a fire-fighting water supply pipeline (7), a cavity in the fire hydrant body (5) is divided into a water inlet cavity (17) and a water drainage cavity (18) above the water inlet cavity (17) by a water inlet valve seat clapboard (15) and a water drainage valve seat clapboard (16), a water outlet pipe (10) is communicated with the water inlet cavity, and a water drainage pipe (4) is communicated with the water drainage cavity; the fire hydrant is characterized in that a pneumatic valve control part is installed on the fire hydrant body and comprises a pneumatic valve control chamber (19), a pneumatic diaphragm (2) and a pneumatic valve rod (12), the pneumatic diaphragm (2) is arranged in the pneumatic valve control chamber and forms an air chamber (20) above the diaphragm, a high-pressure air pipe (21) is communicated with the air chamber (20), a reset spring (13) is sleeved on the pneumatic valve rod (12), the top end of the reset spring is fixedly connected with the pneumatic diaphragm (2), a water inlet control valve core (8) and a water drain control valve core (11) are respectively fixed at the bottom end and the middle of the pneumatic valve rod (12), and the reset valve core and the water drain valve core are alternately matched with a water inlet valve seat of a water inlet valve seat partition plate (15) and a water drain valve seat of a water drain valve seat partition plate.

2. The outdoor antifreezing direct-buried fire hydrant according to claim 1, wherein the fire hydrant body is a valve body, a lower port of the valve body is communicated with the fire-fighting water supply pipeline, a water inlet valve seat and a water discharge valve seat are arranged in the valve cavity, the valve cavity is divided into a water inlet valve cavity and a water discharge valve cavity above the water inlet valve cavity, the water outlet pipe is communicated with the water inlet valve cavity, the water discharge pipe is communicated with the water discharge valve cavity, and the water inlet control valve core and the water discharge control valve core on the pneumatic valve rod are in sealing fit with the water inlet valve seat and the water discharge valve seat alternately along with the longitudinal movement of the pneumatic valve rod.