CN2401213Y - Self-pressured open/close type fire hydrant - Google Patents

Abstract

The utility model relates to a self-pressured open/shut type fire hydrant, which comprises an upper hydrant body, a lower hydrant body, a spherical hydrant core, a sealing ring, an upper pressing ring, a lower pressing ring, a pressurization spring, a water conduit and a cap cover. The spherical hydrant core and the sealing ring are connected as integration and are clamped by the upper pressing ring and the lower pressing ring, the lower pressing ring is arranged in the lower hydrant body, and the spherical hydrant core is provided with a circular hole for vertical communication. The water conduit is communicated with the upper pressing ring and a valve seat, the valve seat is additionally provided with a path which is communicated with the hydrant body, and the valve seat is arranged above the upper hydrant body, and a valve is arranged on the valve seat. The pressurization spring is arranged between the spherical hydrant core and the upper pressing ring, and the sealing surfaces in the lower hydrant body and of the spherical hydrant core are conical surfaces. The utility model has the advantages of good sealing performance, basically no abrasion of movement and simple operation.

Description

From pressing the open-close type fire hydrant

The utility model relates to a kind of from pressing the open-close type fire hydrant.

Present fire hydrant generally is to utilize screw rod to rotate and upgrade or rotate the bolt core to open and close, and its defective is: one, because hermetic unit rotation wearing and tearing are easy to generate water clock; Two, owing to the easy corrosion of screw rod rotating part causes operating difficulties.To the phenomenon that makes appearance " do not have the long leakage of fiery water, fire is twisted not open ".

It is light and handy that the purpose of this utility model provides a kind of operation, and good airproof performance is durable in use, makes easily, and the open-close type of pressure certainly with low cost is eliminated bolt.

For achieving the above object, the technical solution that the utility model adopts is: comprise upper bolt, lower bolt, spherical bolt core, sealing ring, go up trim ring, lower clamping ring, pressurized spring, aqueduct and cap.Spherical bolt core and sealing ring are connected as a single entity, by last trim ring, lower clamping ring fastening; Lower clamping ring is installed in the lower bolt; One circular hole up/down perforation is arranged in the spherical bolt core; Aqueduct be communicated with to be gone up trim ring and valve seat, is provided with in addition in the valve seat in a passage and the upper bolt to communicate; Upper bolt and lower bolt pass through Bolt Connection; Valve seat is installed in the top of upper bolt, and valve is installed on the valve seat; Be provided with pressurized spring between spherical bolt core and the last trim ring; The upper bolt top is covered by the cap of band pin, and the sealing surface with spherical bolt core in the lower bolt is a taper seat.

Owing to adopted spherical bolt core to combine, so the utlity model has the advantage of good airproof performance with taper seat; Spherical bolt core only moves up and down does not have wearing and tearing substantially, durable in use; Owing to be to utilize differential water pressures to open and close, operation is light and handy; Because the more former fire hydrant of structure is simple, make easily, with low cost.

Below in conjunction with drawings and Examples the utility model is further described:

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model surface structure schematic diagram.

Certainly the pressure open-close type fire hydrant of accompanying drawing illustrated embodiment comprises key 1, spherical bolt core 3, goes up trim ring 8, lower clamping ring 6, pressurized spring 5, sealing ring 7, valve 11, lower bolt 16 and aqueduct 9.Sealing surface with spherical bolt core 3 in the lower bolt 16 is a taper seat; Spherical bolt core 3 is connected as a single entity with sealing ring 7, by last trim ring 8 and lower clamping ring 6 fastenings; Lower clamping ring 6 is fixed in the lower bolt 16; There is a circular hole to connect its epicoele 4 and cavity of resorption 2 in the spherical bolt core 3; Last trim ring 8 has through hole to be connected with epicoele 4, and aqueduct 9 connects goes up trim ring 8 and valve seat 10; Valve seat 10 is installed on the key 1, and is provided with a passage and communicates with upper bolt 1 inside; Valve 11 is installed on the valve seat 10; Be provided with pressurized spring 5 between spherical bolt core 3 and the last trim ring 8; Cap 12 is installed on the upper bolt 1, and upper bolt 1 and lower bolt 16 pass through Bolt Connection.

Cap 12 in the present embodiment is with lock, by this lock cap 12 and upper bolt 1 is pinned when not using; Aqueduct 9 is flexible hoses, sealing ring 7 is scalable sealing rings that are connected as a single entity with spherical bolt core 3, lower clamping ring 6 is one to have the supporter of through-hole structure, and during by jack-up, the current in the cavity of resorption 2 can flow to the cavity of upper bolt 1 by the through-hole structure in the lower clamping ring 6 at spherical bolt core 3.

Valve-off 11, the water in the water pipe enters epicoele 4 from the circular hole of cavity of resorption 2 through spherical bolt core 3, and epicoele 4 is airtight, and filling with water in it can't flow out, and epicoele 4 is communicated with cavity of resorption 2, and its hydraulic pressure is identical; Because the acting in conjunction spherical bolt core 3 of spherical bolt core 3 weight and pressurized spring 5 compresses the taper seat through hole of lower bolt 16 downwards, cut off water inlet, water pressure pushing pressurized spring 5 plays pressurization, the enhanced leaktightness effect.The water of cavity of resorption 2 can't be pushed spherical bolt core 3 open, and this moment, fire hydrant was closed condition.When valve 11 is opened, the water of epicoele 4 flows out through the passage of aqueduct 9 from valve seat 10, epicoele 4 hydraulic pressure descend, at this moment cavity of resorption 2 hydraulic pressure are higher than the hydraulic pressure of epicoele 4, and overcome pressurized spring 5 elastic force spherical bolt cores 3 weight fully, so spherical bolt core 3 is upwards pushed in the water inlet in the water pipe open, the surplus water in the epicoele 4 is extruded through the passage of valve seat 10.When water inlet top spherical bolt core 3 left the sealing surface of lower bolt 16, water under high pressure chewed 13 from the water outlet of pouring into upper bolt 1 all around of spherical bolt core 3, and this moment, fire hydrant was opening, and the water source is connected.

Chewing 13 outlet in water outlet has the water outlet of an activity to chew to cover 14, a drainage elbow 15 is arranged on the lower bolt 16, and lower bolt 16 links to each other with socket joint bend pipe 17.

Another effect of pressurized spring 5 is crossed when low when hydraulic pressure, and pressurized spring 5 can be pressed in spherical bolt core 3 on the circular cone sealing surface of key 1, with antiseep, because the operation of this kind fire hydrant is very light and handy, so cap is provided with blockade.

Claims (2)

1, a kind of from pressing the open-close type fire hydrant, comprise upper bolt (1), lower bolt (16), spherical bolt core (3), go up trim ring (8), lower clamping ring (6), pressurized spring (5), sealing ring (7), valve (11), aqueduct (9), it is characterized in that:

Sealing surface with spherical bolt core (3) in the described lower bolt (16) is a taper seat; Spherical bolt core (3) is connected as a single entity with sealing ring (7), by last trim ring (8) and lower clamping ring (6) fastening; Lower clamping ring (6) is fixed in the lower bolt (16); There is a circular hole to connect its epicoele (4) and cavity of resorption (2) in the spherical bolt core (3); Last trim ring (8) has through hole to be connected with epicoele (4), trim ring (8) and valve seat (10) in aqueduct (9) perforation; Valve seat (10) is installed on the upper bolt (1), and is provided with a passage and communicates with upper bolt (1) inside; Valve (11) is installed on the valve seat (10); Be provided with pressurized spring (5) between spherical bolt core (3) and the last trim ring (8); Cap (12) is installed on the upper bolt (1).

2, as claimed in claim 1 from pressing the open-close type fire hydrant, it is characterized in that described cap (12) is with lock, water inlet pipe (9) is a flexible hose, sealing ring (7) is a scalable sealing ring that is connected as a single entity with spherical bolt core (3).

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