CN111677055A

CN111677055A - Fire hydrant

Info

Publication number: CN111677055A
Application number: CN202010554788.6A
Authority: CN
Inventors: 孙海东; 白顺梅; 何永平; 严雄仲; 宋爱清; 孙海新; 张瑜; 马汉晓; 孙海鹏; 张荣子; 昝仁鹏; 运建月; 梁海飞
Original assignee: Qinghai Salt Lake Industry Co Ltd
Current assignee: Qinghai Salt Lake Industry Co Ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2020-09-18

Abstract

The invention discloses a fire hydrant, which comprises a hydrant body, a lower valve seat connected with the hydrant body, an operating rod arranged in the hydrant body and a valve core arranged in the lower valve seat, wherein the operating rod is connected with the valve core; the valve core rotates synchronously along with the operating rod relative to the lower valve seat, and when the first water passage corresponds to the second water passage, the fire hydrant is in an open state to communicate water; when the first water passage corresponds to the drainage passage, the fire hydrant is in a closed state to drain water. According to the fire hydrant provided by the invention, water passing and water draining are realized through the relative rotation of the valve core and the lower valve seat, the first water passing channel corresponds to the water draining channel, so that no accumulated water exists in the hydrant body of the fire hydrant, and the fire hydrant is protected from frost cracking.

Description

Fire hydrant

Technical Field

The invention relates to the technical field of fire-fighting facilities, in particular to a fire hydrant.

Background

The fire hydrant is one of the most important safety facilities for protecting enterprises from fire or reducing fire loss and ensuring the safety of staff life, state and enterprise property, and is an indispensable part in enterprise safety production. It can provide the water source for the fire engine fast, and when the conflagration was in the protection radius range of fire hydrant, can directly be used for putting out a fire.

However, in saline-alkali soil with a special geological structure, the temperature difference is large, the temperature is low in winter, a large amount of fire water is easy to store in the hydrant body after the hydrant is used or tested, the hydrant can be frozen and blocked at low temperature, so that the hydrant cannot be used continuously, a drainage valve for draining water is arranged at the bottom of part of the hydrant, the failure rate of the drainage valve is high, accumulated water is not easy to drain, the hydrant body is frozen and cracked, or the drainage valve is not closed tightly, so that a water leakage phenomenon occurs, and once a fire disaster occurs, serious loss can be caused to lives and properties of people.

Disclosure of Invention

The invention aims to provide a fire hydrant to solve the problem that in the prior art, accumulated water in the fire hydrant is not easy to drain, so that a hydrant body is frost-cracked.

In order to achieve the above purpose, the invention provides the following technical scheme: a fire hydrant comprises a hydrant body, a lower valve seat connected with the hydrant body, an operating rod arranged in the hydrant body and a valve core arranged in the lower valve seat, wherein the operating rod is connected with the valve core;

the valve core rotates synchronously along with the operating rod relative to the lower valve seat, and when the first water passage corresponds to the second water passage, the fire hydrant is in an open state to communicate water; when the first water passage corresponds to the drainage passage, the fire hydrant is in a closed state to drain water.

Furthermore, the second water passage and the drainage passage are arranged at a certain angle.

Further, the second water passage channel is perpendicular to the water drainage channel.

Further, one end of the first water passage channel close to the drainage channel is larger than one end of the drainage channel close to the first water passage channel.

Further, the size of one end of the first water passage close to the second water passage is the same as that of one end of the second water passage close to the first water passage.

Furthermore, the first water passage, the second water passage and the drainage passage are all vertically communicated.

Further, the fire hydrant also includes a hydrant gland securing the lever to the hydrant body.

Further, the fire hydrant also comprises a sealing ring arranged between the operating rod and the hydrant body.

Further, the hydrant also includes a cartridge securing ring that secures the cartridge within the lower seat.

Further, the valve core and the operating rod are of an integrated structure.

Compared with the prior art, the fire hydrant provided by the invention has the following advantages:

the fire hydrant provided by the invention realizes water passing and water draining through the relative rotation of the valve core and the lower valve seat, particularly, the first water passing channel corresponds to the water draining channel to drain water, and accumulated water is easy to drain, so that no accumulated water exists in the hydrant body, and the fire hydrant is protected from frost cracking.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. In the drawings:

fig. 1 is a schematic structural view of a preferred embodiment of a fire hydrant according to the present invention in an open state;

FIG. 2 is a schematic view of the hydrant of FIG. 1 in a closed configuration;

FIG. 3 is a top view of a lower valve seat in the hydrant of FIG. 1;

fig. 4 is a top view of the valve cartridge of the hydrant of fig. 1.

Reference numerals:

1-a plug body, 11-a water outlet,

2-lower valve seat, 21-second water passage,

22-a drainage channel, 3-an operating lever,

4-valve core, 41-first water channel,

5-a fire hydrant gland, 6-a wrench,

7-sealing ring, 8-valve core fastening ring.

Detailed Description

The present invention provides many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific examples described in the following embodiments of the present invention are merely illustrative of specific embodiments of the present invention and do not limit the scope of the invention.

The invention is further described with reference to the following figures and detailed description of embodiments.

Fig. 1 to 2 show a schematic structural view of a fire hydrant according to a preferred embodiment of the present invention in an opened state in fig. 1; fig. 2 is a schematic structural view of the hydrant of fig. 1 in a closed state. The dotted lines and arrows in the figure represent the direction of water flow.

The embodiment is a fire hydrant, which comprises a hydrant body 1, a lower valve seat 2 connected with the hydrant body 1, an operating lever 3 arranged in the hydrant body 1, and a valve core 4 arranged in the lower valve seat 2, wherein the operating lever 3 is connected with the valve core 4, the valve core 4 is provided with a first water passage 41 penetrating through the valve core 4, the lower valve seat 2 is provided with a second water passage 21 penetrating through the lower valve seat, and a drainage passage 22 penetrating through the lower valve seat, and the drainage passage 22 is communicated with the outside;

the valve core 4 rotates synchronously with the operating rod 3 relative to the lower valve seat 2, and when the first water passage 41 corresponds to the second water passage 21, the fire hydrant is in an open state to allow water to flow; when the first water passage 41 corresponds to the drain passage 22, the hydrant is in a closed state, and water is drained.

The application provides a fire hydrant passes through water and drainage through the relative rotation realization of case and lower disk seat, especially first logical water passageway corresponds with drainage channel and just can carry out the drainage, and ponding is very easy to be arranged for the internal no ponding of bolt of fire hydrant, protection fire hydrant is not by the frost crack.

The hydrant body 1 is the main structure of the fire hydrant, and the hydrant body 1 is partially arranged on the ground and partially arranged under the ground. Two sides of the bolt body 1 are provided with 2 water outlets 11, in this embodiment, DN65, pn1.0mpa, DN80, pn1.0mpa are respectively provided.

The lower valve seat 2 is connected with the bolt body 1, and in the embodiment, the lower valve seat 2 and the bolt body 1 are of an integrated structure, so that the lower valve seat is convenient to process and install.

Fig. 3 is a top view of the lower seat of the hydrant of fig. 1, as shown in fig. 3. The lower valve seat 2 is provided with a second water through channel 21 penetrating through the lower valve seat and a water drainage channel 22 penetrating through the lower valve seat, and the water drainage channel 22 is communicated with the outside.

The second water passage 21 is used for passing water, specifically, the lower valve seat 2 is a cylinder, the second water passage 21 is two circular passages, the two circular passages vertically penetrate through the lower valve seat 2, the two circular passages are symmetrically arranged on the lower valve seat 2, and the diameter of the second water passage 21 is 2/3 of the radius of the lower valve seat 2. Of course, the number, size, shape and distribution of the second water channels 21 may be other, or may not be perpendicular to each other, and are designed according to the use condition of the fire hydrant and the surrounding geological conditions. The bottom end of the second water passage 21 is provided with a water inlet for water inlet.

The drainage channel 22 is used for draining water, specifically, the drainage channel 22 is two circular channels, vertically penetrates through the lower valve seat 2, is symmetrically arranged on the lower valve seat 2, and has a diameter 1/4 of the radius of the lower valve seat 2, of course, the number, size, shape and distribution mode of the drainage channel 22 may be other, or may not be vertically penetrated, and is designed according to the service condition of the fire hydrant and the surrounding geological conditions.

The bottom of the drainage channel 22 is a water outlet which is communicated with the outside and exposed outside the lower valve seat 2, so that water can be drained outwards conveniently, the position of the water outlet is arranged below the depth of an anti-freezing layer during installation, and the upper part, the lower part and the periphery of the water outlet are filled with a certain amount of (about 400mm-500mm in thickness) crushed sand stones, so that the water outlet is beneficial to absorbing fire fighting water drained during drainage of the fire hydrant and preventing blockage after drainage.

Further, the second water passage 21 is disposed at an angle to the water discharge passage 22. The first water passage 41 of the valve core 4 corresponds to the second water passage 21 of the lower valve seat 2, when the valve core 4 is rotated to correspond to the drainage passage 22, the rotation angle of the valve core 4 is the same as the angle between the second water passage 21 and the drainage passage 22, and the position of the first water passage 41 can be determined according to the rotation angle of the valve core 4, so that the valve is simple and convenient.

The second water passage 21 is perpendicular to the drain passage 22. The valve core 4 horizontally rotates 90 degrees due to the vertical arrangement, the fire hydrant is switched between the open state and the closed state, the opening and closing position of the fire hydrant is more definite, the operation is convenient, and the reliability is high.

The operating rod 3 is arranged in the bolt body 1, and the operating rod 3 is rotated to enable the valve core 4 to synchronously rotate so as to change the correspondence between the first water passage 41 on the valve core 4 and the second water passage 21 or the drainage passage 22.

The operating rod 3 is used as a rotating shaft, so that the fire hydrant is opened/closed by the rotating shaft, and the fire hydrant is labor-saving and convenient.

Further, the fire hydrant also comprises a fire hydrant gland 5 for fixing the operating rod 3 on the hydrant body 1, so that the stability of the operating rod 3 is improved.

Further, the fire hydrant also comprises a wrench 6 arranged on the fire hydrant gland 5 and used for rotating the operating rod 3 to open or close the fire hydrant. When the pressure of the fire fighting pipeline is maintained at 0.4-0.6 Mpa, the fire hydrant is opened or closed by rotating the wrench 6 with one hand.

Further, the fire hydrant also comprises a sealing ring 7 arranged between the operating rod 3 and the hydrant body 1, and the sealing ring is used for sealing between the operating rod 3 and the hydrant body 1 and preventing fire fighting water from leaking outwards along the operating rod 3.

As shown in fig. 4, fig. 4 is a top view of the spool in the hydrant of fig. 1.

The valve core 4 is arranged in the lower valve seat 2, the valve core 4 is provided with a first water passage 41 penetrating through the valve core 4, specifically, the valve core 4 is a cylinder, the first water passage 41 is two circular passages vertically penetrating through the valve core 4, the valve core 4 is symmetrically arranged, and the diameter of the first water passage 41 is 2/3 of the radius of the valve core 4. Of course, the number, size, shape and distribution of the first water passage 41 may be other, or may not be perpendicular to the first water passage, and the first water passage is designed according to the use condition of the fire hydrant and the surrounding geological conditions.

The valve core 4 rotates synchronously with the operating rod 3 relative to the lower valve seat 2, and when the first water passage 41 corresponds to the second water passage 21, the fire hydrant is in an open state to allow water to flow; when the first water passage 41 corresponds to the drain passage 22, the hydrant is in a closed state, and water is drained. In the present embodiment, the correspondence is that the first water passage channel 41 is completely vertically aligned with the second water passage channel 21/the drain channel 22, but the correspondence may be partially aligned.

Further, an end of the first water passage 41 near the drain passage 22 is larger than an end of the drain passage 22 near the first water passage 41. Play the sealed effect of certain degree, remaining fire water can discharge completely, and the effect of preventing frostbite is better.

Further, the end of the first water passage 41 close to the second water passage 21 is the same size as the end of the second water passage 21 close to the first water passage 41. When the first water passage 41 corresponds to the second water passage 21, the water pressure is stable and water is not likely to remain.

Further, the valve element 4 and the lever 3 are integrated. Stable structure and convenient processing.

Further, the hydrant also includes a cartridge fastening ring 8 that fixes the cartridge 4 in the lower seat 2. The valve core fastening ring 8 compresses the valve core 4 in the lower valve seat 2, so that the structure stability and the sealing performance are ensured. The valve core fastening ring 8 is fixed on the bolt body 1 through a fastening ring fixing pin.

The fire hydrant is connected with the fire fighting channel through a flange.

In this embodiment, all sealing forms of the sealing surfaces which are not particularly required are hard seals, such as sealing of the peripheral curved surface and the bottom surface of the valve element with the inner surface of the lower valve seat.

When a fire occurs, an operator firstly completely opens the water outlet 11 on the hydrant body 1, connects a fire hose or a water gun (or other fire extinguishing devices) with the corresponding water outlet 11, then rotates the operating lever 3 by 90 degrees counterclockwise by using the wrench 6, the valve core 4 synchronously rotates along with the operating lever 3 relative to the lower valve seat 2, the first water passage 41 corresponds to the second water passage 21, the fire hydrant is in an open state, and the fire water is sprayed out by the water gun (or other fire extinguishing devices) to extinguish the fire.

After the fire extinguishing work is finished, the operating lever 3 is rotated by 90 degrees clockwise by the wrench 6, the valve core 4 rotates synchronously with the operating lever 3 relative to the lower valve seat 2, the first water passage 41 corresponds to the drainage passage 22, the fire hydrant is in a closed state, accumulated water in the fire hydrant is discharged out of the fire hydrant through the drainage passage 22, the maintenance cost is low, and the hydrant body 1 can be protected from frost cracking after the main valve of the fire hydrant is closed in winter.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim.

Claims

1. A fire hydrant is characterized by comprising a hydrant body (1), a lower valve seat (2) connected with the hydrant body (1), an operating rod (3) arranged in the hydrant body (1) and a valve core (4) arranged in the lower valve seat (2), wherein the operating rod (3) is connected with the valve core (4), the valve core (4) is provided with a first water through channel (41) penetrating through the valve core, the lower valve seat (2) is provided with a second water through channel (21) penetrating through the lower valve seat and a water drainage channel (22) penetrating through the lower valve seat, and the water drainage channel (22) is communicated with the outside;

the valve core (4) synchronously rotates along with the operating rod (3) relative to the lower valve seat, and when the first water passage (41) corresponds to the second water passage (21), the fire hydrant is in an open state and is used for water supply; when the first water passage (41) corresponds to the drainage passage (22), the fire hydrant is closed to drain water.

2. A fire hydrant according to claim 1 in which the second water passageway (21) is arranged at an angle to the water drainage channel (22).

3. A fire hydrant according to claim 1 in which the second water passageway (21) is arranged perpendicular to the water drainage passageway (22).

4. A fire hydrant according to claim 1 in which the end of the first water passageway (41) adjacent to the drain passageway (22) is larger than the end of the drain passageway (22) adjacent to the first water passageway (41).

5. A fire hydrant according to claim 1 in which the end of the first water passageway (41) adjacent to the second water passageway (21) is the same size as the end of the second water passageway (21) adjacent to the first water passageway (41).

6. A fire hydrant according to claim 1 in which the first water passageway (41), the second water passageway (21) and the water drainage passageway (22) are all vertically through.

7. A fire hydrant according to claim 1 further comprising a hydrant gland (5) which secures the operating rod (3) to the hydrant body (1).

8. A fire hydrant according to claim 1 further comprising a sealing ring (7) between the operating rod (3) and the hydrant body (1).

9. A fire hydrant according to claim 1 further comprising a core fastening ring (8) which secures the core (4) in the lower seat (2).

10. A fire hydrant according to any one of claims 1 to 9 in which the cartridge (4) is of integral construction with the lever (3).