CN219586824U - Large-flow fire hydrant capable of being opened under reduced pressure - Google Patents

Abstract

The utility model discloses a large-flow hydrant capable of being opened under reduced pressure, which belongs to the technical field of fire-fighting equipment and comprises a hydrant body, wherein the hydrant body is provided with a base, the base is provided with a water inlet, the base is provided with a pressure reducing device, the pressure reducing device comprises a pressure reducing outer sleeve and a pressure reducing inner sleeve, the lower end of the pressure reducing outer sleeve is connected with the lower end of the base, the pressure reducing inner sleeve is arranged on the upper side of the pressure reducing outer sleeve, a large valve clack is arranged in the base, the large valve clack is arranged on the upper side of the pressure reducing inner sleeve, a connecting rod is arranged in the hydrant body, and the lower end of the connecting rod is connected with a small valve clack.

Description

Large-flow fire hydrant capable of being opened under reduced pressure

Technical Field

The utility model discloses a high-flow hydrant capable of being opened under reduced pressure, and belongs to the technical field of fire-fighting equipment.

Background

Fire hydrant, formally called fire hydrant, is a fixed fire-fighting equipment, and is mainly used for controlling combustible materials, isolating combustion-supporting materials and eliminating ignition sources. The fire hydrant set is generally formed by combining a fire hydrant, a fire hose, a water gun, a connecting buckle, a bolt, a clip and the like, and the fire hydrant is mainly used for a fire truck to take water from a municipal water supply pipe network or an outdoor fire water supply pipe network to extinguish fire, and can also be directly connected with a water hose and the water gun to extinguish fire. Therefore, the indoor and outdoor hydrant system is also one of important fire fighting facilities for extinguishing fire.

At present, two main types of fire hydrant valve opening modes in the market are water flow and reverse water flow respectively, the valve opening along the water flow is convenient, but the closing is very forceful, the condition that the fire hydrant cannot be completely closed easily occurs in the closing process, if the fire hydrant is forcibly closed, the connecting rod in the fire hydrant is easy to bend, the valve opening along the water flow is easy to close in the closing process of the valve opening along the water flow, but the valve opening process needs to be pressed down to overcome the water pressure to push the valve clack, the abnormal difficulty of opening is changed, the fire hydrant cannot be smoothly opened when the fire disaster occurs easily in the existing opening mode, thereby delaying rescue, the life and property safety of people cannot be timely protected, and the fire hydrant cannot be easily closed after the rescue is completed, so that additional waste is caused by water resources.

There is therefore a need to propose a new solution to this problem.

Disclosure of Invention

The utility model aims to solve the problems and provide the large-flow hydrant capable of being opened under reduced pressure, which has the effect of easy opening and closing.

The utility model realizes the purpose through the following technical scheme, the pressure reducing device comprises a plug body, wherein the lower end of the plug body is provided with a base, the lower end of the base is provided with a water inlet hole, the base is internally provided with a pressure reducing device, the pressure reducing device comprises a pressure reducing outer sleeve and a pressure reducing inner sleeve, the lower end of the pressure reducing outer sleeve is connected with the lower end of the base, the pressure reducing inner sleeve is arranged on the upper side of the pressure reducing outer sleeve and is sleeved with the pressure reducing outer sleeve, a large valve clack is arranged in the base and is arranged on the upper side of the pressure reducing inner sleeve and is connected with the pressure reducing inner sleeve, the plug body is internally provided with a connecting rod capable of moving up and down, the upper end of the connecting rod extends out from the upper end of the plug body and the lower end of the connecting rod penetrates through the large valve clack and the pressure reducing inner sleeve to the position between the pressure reducing inner sleeve and the pressure reducing outer sleeve, and the lower end of the connecting rod is connected with a small valve clack.

By adopting the technical scheme, the water source in the base can pass through the gap between the decompression outer sleeve and the decompression inner sleeve to enter the decompression device, when the hydrant is to be started, the connecting rod is pressed down to enable the connecting rod to move downwards, the small valve clack at the lower end of the connecting rod moves downwards to be started, the water source in the decompression device can pass through the decompression inner sleeve and the large valve clack to enter the hydrant body, the small valve clack has small stress area compared with the large valve clack, the water pressure thrust born by the small valve clack when moving downwards is small, and the water source is decompressed through the gap between the decompression outer sleeve and the decompression inner sleeve when flowing into the small valve clack, so that the acting force of the water source in the decompression device is reduced, the opening of the small valve clack is easier, and when the water source passes through the small valve clack to enter the hydrant body, the water source flow area between the large valve clack and the small valve clack is larger than the flow area of the gap between the decompression outer sleeve and the decompression inner sleeve, the connecting rod continuously moves downwards to drive the big valve clack to move, so that the hydrant can be easily opened, when the hydrant is to be closed, the ascending connecting rod enables the big valve clack to move upwards to drive the small valve clack to move upwards, the big valve clack moves upwards simultaneously along with the ascending of the connecting rod under the pushing of the water pressure, the big valve clack is preferentially closed along with the ascending of the connecting rod, then the small valve clack is closed along with the continuous ascending of the connecting rod, the water source between the decompression device and the hydrant body is blocked after the small valve clack is closed, and after the decompression of the small valve clack and the decompression device is lost, the water source recovers the upward thrust of the big valve clack, so that the big valve clack can be easily moved upwards to close and close the hydrant.

Preferably, the pressure reducing outer sleeve and the pressure reducing inner sleeve are both in U-shaped structures, one end of the pressure reducing outer sleeve and one end of the pressure reducing inner sleeve, which are sleeved with each other, are both open ends, the diameter of the pressure reducing outer sleeve is larger than that of the pressure reducing inner sleeve, and a gap is reserved between the pressure reducing outer sleeve and the pressure reducing inner sleeve.

By adopting the technical scheme, the U-shaped structures of the decompression outer sleeve and the decompression inner sleeve ensure that gaps are reserved between the decompression outer sleeve and the decompression inner sleeve when the decompression inner sleeve moves downwards, so that a water source can enter an internal state, and the gaps between the decompression outer sleeve and the decompression inner sleeve can decompress the pressure of the water source, so that the pressure of the water source is smaller when the water source flows into the decompression device, the upward thrust of the water source to the small valve clack is reduced, and the opening of the small valve clack is easier.

Preferably, the small valve clack is of a cylindrical structure with one end open and one end of the opening is upward, the large valve clack and the pressure reducing inner sleeve are both provided with communication holes, and when the upper end of the small valve clack is abutted against the pressure reducing inner sleeve, the small valve clack can cover the communication holes.

Through adopting above-mentioned technical scheme, little valve clack one end open-ended cylindric structure can effectively reduce the kinetic energy of rivers, reduces the thrust of the water source that little valve clack received in opening and closing the in-process.

Preferably, the joint of the large valve clack and the base and the joint of the decompression inner sleeve and the small valve clack are respectively provided with a sealing gasket.

By adopting the technical scheme, the sealing gasket can improve the sealing effect of the large valve clack and the small valve clack, and simultaneously reduce friction and abrasion.

Preferably, the upper end of the bolt body is provided with a bolt cover, a rotatable valve rod is arranged in the bolt cover in a penetrating manner, a connecting cylinder used for being connected with a connecting rod is sleeved at the lower end of the valve rod, the valve rod is connected with the bolt cover through threads, and a plane bearing is arranged between the lower end of the bolt cover and the valve rod.

Through adopting above-mentioned technical scheme, the valve rod moves downwards under the transmission of screw thread when rotating the valve rod, drives the connecting rod that is connected through connecting cylinder and descends to make connecting rod promote big valve clack and little valve clack and remove, make base and the internal water source intercommunication of bolt, reverse rotation valve rod can drive the connecting rod rise and close the intercommunication of water source between big valve clack and the little valve clack blocking base and the bolt body, and plane bearing can reduce the frictional force between bolt lid and the valve rod simultaneously, makes the rotation of valve rod easier, and then can more laborsaving opening and close the hydrant.

Preferably, a water outlet is formed in the upper side of the plug body, and a water outlet valve is arranged at the water outlet.

Through adopting above-mentioned technical scheme, when not having the fire hose to need use the fire hydrant, the accessible is connected the water valve and is used the fire hydrant, and accessible water valve control goes out water and avoids directly opening the bolt mouth and lead to water source play water control inconvenient.

Preferably, a plurality of bolt openings are transversely arranged on the upper side of the bolt body.

Through adopting above-mentioned technical scheme, the setting through different bolt mouths makes the fire hydrant can connect a plurality of fire hose and fire engine simultaneously, makes the use of fire hydrant more convenient.

Compared with the prior art, the utility model has the beneficial effects that:

firstly, the small valve clack has smaller stress area and is easier to overcome pressure to open, meanwhile, the large valve clack is partitioned into an inner part and an outer part by the pressure reducing device, the outer side of the pressure reducing device directly bears the pressure of a water source, the pressure born by the inner part of the pressure reducing device is dynamically decompressed through the pressure reducing outer sleeve and the pressure reducing inner sleeve, the reverse thrust of the pressure reducing device is effectively reduced, so that the large valve clack is easier to open, and the effect of conveniently opening the hydrant is achieved;

secondly, when the connecting rod ascends to close the small valve clack, the upward thrust generated by the water source on the large valve clack can be recovered, so that the large valve clack can move upwards along the water potential when being closed, the water source communication between the base and the plug body is blocked, and the effect of conveniently closing the hydrant is achieved;

thirdly, when the hydrant is kept closed, the water source causes upward thrust to the large valve clack and the small valve clack, so that the large valve clack and the small valve clack are kept to be abutted against the sealing gasket, thereby having better sealing effect and effectively preventing the hydrant from leaking water;

fourth, the plane bearing between the bolt cover and the valve rod can reduce the friction force between the bolt cover and the valve rod, so that the friction force of the bolt cover is reduced when the valve rod rotates, the valve rod can be rotated with smaller force, and the fire hydrant can be opened and closed more labor-saving.

Drawings

Fig. 1 is a schematic structural view of a high-flow hydrant capable of being opened under reduced pressure;

fig. 2 is a front view of a high-flow hydrant that can be depressurized open;

FIG. 3 is an enlarged schematic view of FIG. 1 at A;

fig. 4 is an enlarged schematic view at B in fig. 1.

Reference numerals: 1. a bolt body; 2. a base; 3. a pressure reducing jacket; 4. a decompression inner sleeve; 5. a large valve clack; 6. a connecting rod; 7. a small valve clack; 8. a bolt cover; 9. a planar bearing; 10. a water outlet valve; 11. tightly sealing the gasket; 12. a bolt opening; 13. a valve stem; 14. and a connecting cylinder.

Detailed Description

In the following description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

1-4, a large-flow hydrant capable of being opened under reduced pressure, which comprises a hydrant body 1, wherein the lower end of the hydrant body 1 is provided with a base 2, the lower end of the base 2 is provided with a water inlet, the inside of the base 2 is provided with a pressure reducing device, the pressure reducing device comprises a pressure reducing outer sleeve 3 and a pressure reducing inner sleeve 4, the lower end of the pressure reducing outer sleeve 3 is connected with the lower end of the base 2, the pressure reducing inner sleeve 4 is arranged on the upper side of the pressure reducing outer sleeve 3 and is sleeved with the pressure reducing outer sleeve 3, a large valve clack 5 is arranged in the base 2, the large valve clack 5 is arranged on the upper side of the pressure reducing inner sleeve 4 and is connected with the pressure reducing inner sleeve 4, a connecting rod 6 capable of moving up and down is arranged in the hydrant body 1, the upper end of the connecting rod 6 extends out from the upper end of the hydrant body 1 and the lower end of the connecting rod extends between the pressure reducing inner sleeve 4 and the pressure reducing outer sleeve 3, the lower end of the connecting rod 6 is connected with a small valve clack 7, a water source in the base 2 can enter the pressure reducing device through a gap between the pressure reducing outer sleeve 3 and the pressure reducing inner sleeve 4, when the hydrant is to be opened, the connecting rod 6 is pressed down to enable the hydrant to move downwards, the small valve clack 7 at the lower end of the connecting rod 6 moves downwards to be opened, so that a water source in the decompression device can pass through the decompression inner sleeve 4 and the large valve clack 5 to enter the hydrant body 1, the stress area of the small valve clack 7 is smaller than that of the large valve clack 5, the water pressure thrust is smaller when the hydrant moves downwards, the water source is decompressed through the gap between the decompression outer sleeve 3 and the decompression inner sleeve 4 when flowing into the small valve clack 7, the acting force of the water source in the decompression device is reduced, the opening of the small valve clack 7 is easier, the water source flow area between the large valve clack 5 and the small valve clack 7 is larger than that between the decompression outer sleeve 3 and the decompression inner sleeve 4 when the water source passes through the small valve clack 7 to enter the hydrant body 1, so that the water pressure of the connecting part of the large valve clack 5 and the decompression inner sleeve 4 can be relieved, at this time, the connecting rod 6 continuously moves downwards to drive the big valve clack 5 to move, so that the fire hydrant can be easily opened, when the fire hydrant is to be closed, the ascending connecting rod 6 enables the ascending connecting rod to move upwards to drive the small valve clack 7 to move upwards, the big valve clack 5 moves upwards simultaneously along with the ascending of the connecting rod 6 under the pushing of water pressure, the big valve clack 5 is preferentially closed along with the ascending of the connecting rod 6, then the small valve clack 7 is closed along with the continuous ascending of the connecting rod 6, the water source between the decompression device and the hydrant body 1 is blocked after the small valve clack 7 is closed, and after the decompression of the small valve clack 7 and the decompression device is lost, the water source recovers the thrust upwards to the big valve clack 5, so that the big valve clack 5 can be easily moved upwards to close and close the fire hydrant.

The pressure reducing outer sleeve 3 and the pressure reducing inner sleeve 4 are of U-shaped structures, one end of the pressure reducing outer sleeve 3 and one end of the pressure reducing inner sleeve 4 are sleeved with each other, the diameter of the pressure reducing outer sleeve 3 is larger than that of the pressure reducing inner sleeve 4, a gap is reserved between the pressure reducing outer sleeve 3 and the pressure reducing inner sleeve 4, the U-shaped structures of the pressure reducing outer sleeve 3 and the pressure reducing inner sleeve 4 enable the pressure of a water source to enter an internal state when the pressure reducing inner sleeve 4 moves downwards, the gap between the pressure reducing outer sleeve 3 and the pressure reducing inner sleeve 4 can decompress the pressure of the water source, the pressure of the water source is smaller when the water source flows into the pressure reducing device, the opening of the small valve clack 7 is easier, the small valve clack 7 is of a cylindrical structure with one open end and one end facing upwards, the large valve clack 5 and the pressure reducing inner sleeve 4 are provided with communication holes, when the upper ends of the small valve clack 7 are abutted against the pressure reducing inner sleeve 4, the cylindrical structure with one open end of the small valve clack 7 can effectively reduce the kinetic energy of water flow, the thrust of the water source received by the valve clack in the opening and the closing process is arranged at the abutting position of the large 5 and the base 2, the abutting position of the pressure reducing valve clack 11 and the abutting position of the small valve clack 7 is provided with a tight gasket 11, the sealing gasket 11 and the sealing the small valve clack 11 can be tightly sealed by the sealing the valve clack 7.

The upper end of the hydrant body 1 is provided with a hydrant cover 8, a rotatable valve rod 13 is arranged in the hydrant cover 8 in a penetrating manner, a connecting cylinder 14 used for being connected with the connecting rod 6 is sleeved at the lower end of the valve rod 13, the valve rod 13 is connected with the hydrant cover 8 through threads, a plane bearing 9 is arranged between the lower end of the hydrant cover 8 and the valve rod 13, the valve rod 13 moves downwards under the transmission of the threads when the valve rod 13 is rotated, the connecting rod 6 connected with the connecting rod is driven to descend through the connecting cylinder 14, so that the connecting rod 6 pushes the large valve clack 5 and the small valve clack 7 to move so that the base 2 is communicated with a water source in the hydrant body 1, the valve rod 13 is reversely rotated, the connecting rod 6 can be driven to ascend to close the large valve clack 5 and the small valve clack 7 to block the connection of a water source between the base 2 and the hydrant body 1, meanwhile, the friction force between the hydrant cover 8 and the valve rod 13 can be reduced through the plane bearing 9, the rotation of the valve rod 13 is easier, further the hydrant can be opened and closed more easily, a water outlet 10 is arranged on the upper side of the hydrant body 1, when the hydrant is not required to be used, the hydrant is not used, the water outlet 10 can be controlled through the connecting water outlet 10, the water outlet valve 12 can be controlled to be directly, and the water outlet 12 can be prevented from being opened through the control the water outlet 12, and the water outlet 12 can be opened through the water inlet and the hydrant 12, the water outlet 12 can be more conveniently and the water outlet can be conveniently and the water-saving fire hydrant.

When the hydrant is to be opened, the valve rod 13 is rotated to enable the hydrant to move downwards under the action of threads to drive the connecting rod 6 to descend, the connecting rod 6 firstly drives the small valve clack 7 to move, a water source in the pressure reducing device can enter the hydrant body 1 through the communication hole, so that the pressure relief effect is achieved, then the connecting rod 6 continues to move downwards to drive the large valve clack 5 to move to relieve the sealing of the upper end of the base 2, the water source can circulate in the base 2 and the hydrant body 1, when the hydrant is to be closed, the valve rod 13 is rotated to drive the connecting rod 6 to ascend, the small valve clack 7 at the lower end of the connecting rod 6 moves upwards together, the large valve clack 5 moves upwards under the action of forward thrust until the small valve clack 7 and the large valve clack 5 are closed, the pressure relief effect on the large valve clack 5 is relieved, the effect of conveniently opening and closing the hydrant is achieved, and convenience of the hydrant in rescue process is guaranteed while invalid waste of the water source is reduced.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (7)

1. The utility model provides a but large-traffic fire hydrant of decompression opening, includes the key body (1), its characterized in that: the plug body (1) lower extreme is provided with base (2), the inlet opening has been seted up to base (2) lower extreme, be provided with pressure relief device in base (2), pressure relief device is including decompression overcoat (3) and decompression endotheca (4), decompression overcoat (3) lower extreme is connected with base (2) lower extreme, decompression endotheca (4) set up in decompression overcoat (3) upside and overlap with decompression overcoat (3), be provided with big valve clack (5) in base (2), big valve clack (5) set up in decompression endotheca (4) upside and are connected with decompression endotheca (4), be provided with connecting rod (6) that can reciprocate in plug body (1), connecting rod (6) upper end stretches out and the lower extreme runs through big valve clack (5) and decompression endotheca (4) and extends to between decompression overcoat (3), connecting rod (6) lower extreme is connected with little valve clack (7).

2. A high flow hydrant openable by decompression as claimed in claim 1, wherein: the pressure reducing outer sleeve (3) and the pressure reducing inner sleeve (4) are of U-shaped structures, one end of the pressure reducing outer sleeve (3) and one end of the pressure reducing inner sleeve (4) which are sleeved are both open ends, the diameter of the pressure reducing outer sleeve (3) is larger than that of the pressure reducing inner sleeve (4), and a gap is reserved between the pressure reducing outer sleeve (3) and the pressure reducing inner sleeve (4).

3. A high flow hydrant openable by decompression as claimed in claim 1, wherein: the small valve clack (7) is of a cylindrical structure with one end open and one end of the opening is upward, the large valve clack (5) and the decompression inner sleeve (4) are both provided with communication holes, and when the upper end of the small valve clack (7) is abutted to the decompression inner sleeve (4), the small valve clack (7) can cover the communication holes.

4. A high flow hydrant openable by decompression according to claim 3, wherein: the joint of the large valve clack (5) and the base (2) and the joint of the decompression inner sleeve (4) and the small valve clack (7) are respectively provided with a sealing gasket (11).

5. A high flow hydrant openable by decompression as claimed in claim 1, wherein: the novel bolt is characterized in that a bolt cover (8) is arranged at the upper end of the bolt body (1), a rotatable valve rod (13) is arranged in the bolt cover (8) in a penetrating mode, a connecting cylinder (14) used for being connected with a connecting rod (6) is sleeved at the lower end of the valve rod (13), the valve rod (13) is connected with the bolt cover (8) through threads, and a plane bearing (9) is arranged between the lower end of the bolt cover (8) and the valve rod (13).

6. A high flow hydrant openable by decompression as claimed in claim 1, wherein: a water outlet is formed in the upper side of the plug body (1), and a water outlet valve (10) is arranged at the water outlet.

7. A high flow hydrant openable by decompression as claimed in claim 1, wherein: a plurality of bolt openings (12) are transversely arranged on the upper side of the bolt body (1).