High-flow fire hydrant pressure regulating device

Abstract

The utility model relates to the technical field of fire fighting equipment, in particular to a high-flow fire hydrant pressure regulating device which structurally comprises a valve body connected to the bottom of a fire hydrant, the valve body is of a vertically-through hollow structure, the top of the valve body is communicated with the water inlet end of the bottom of the fire hydrant, a water inlet is formed in the bottom of the valve body, and an upper valve seat and a lower valve seat are fixed in the valve body respectively. According to the fire hydrant, the valve rod, the small valve clack, the elastic assembly and the large valve clack are combined, when the fire hydrant needs to be opened, the small valve clack is opened firstly, fire fighting water starts to flow upwards, accordingly, pressure at the upper end and the lower end of the large valve clack is balanced, then the large valve clack is opened, and the fire fighting water flows upwards. The opening resistance is greatly reduced, so that the operation difficulty is effectively reduced, an operator can more quickly and smoothly open the fire hydrant, the fire rescue efficiency is improved, timely water supply is ensured, and the response speed and rescue effect of overall fire fighting operation are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire fighting equipment technical field, especially a large flow fire hydrant pressure regulating device. BACKGROUND

[0002] The fire hydrant is a kind of fixed fire-fighting tool, its main function is control combustible, insulate combustion-supporting material or eliminate ignition source, to achieve the effect of fire fighting, the fire hydrant is also divided into many kinds according to the different setting places, wherein, as the above-ground fire hydrant of outdoor ground fire-fighting water supply facility, it is used to supply water to fire engine or directly connected with water hose, water gun and carries out fire extinguishing, it is the special facility of outdoor essential fire-fighting water supply.

[0003] In the patent number for: CN212896622U in the patent file discloses a structure improved ground fire hydrant, including plug cover, transmission rod, plug body, transmission seat, valve rod, valve body, valve flap and water inlet elbow pipe;The inner cavity of plug cover is equipped with transmission rod, the bottom of transmission rod is equipped with connecting head, the outer side wall of connecting head is equipped with three-head external thread, the bottom of plug cover is fixedly connected with the top of plug body, the inner cavity of plug body is equipped with transmission seat and valve rod, the top of transmission seat is equipped with connecting sleeve, the inside of connecting sleeve is equipped with three-head internal thread, connecting sleeve and connecting head are matched with transmission connection, the bottom of transmission seat is equipped with connecting column, the bottom of connecting column is fixedly connected with the top of valve rod;The bottom of plug body is fixedly connected with the top of valve body, the inside of valve body is equipped with valve flap, the top of valve flap is fixedly connected with the bottom of valve rod, the bottom of valve body is fixedly connected with the top of water inlet elbow pipe;

[0004] Its actual application process still has the following insufficiently: the existing large flow fire hydrant in the use process, because the water supply pressure of large flow fire hydrant is bigger, valve flap is subjected to stronger water pressure, so that valve flap needs to overcome greater resistance when opening, lead to operator needs to exert greater effort to open fire hydrant valve smoothly, not only increase the opening difficulty, also can cause delay in the emergency moment of fire rescue, influence the timeliness and efficiency of rescue work. Utility model content

[0005] The utility model provides a large flow fire hydrant pressure regulating device, can effectively solve the above -mentioned problem.

[0006] The utility model is realized as follows:

[0007] The utility model discloses a large flow fire hydrant pressure regulating device, its structure includes: the valve body connected to the bottom of fire hydrant, the valve body is the middle through structure of going through up and down, and the top of valve body is in communication with the water inlet end of fire hydrant bottom, and the bottom of valve body is equipped with the water inlet, and the valve body is fixed with upper valve seat and lower valve seat respectively, and upper valve seat, lower valve seat are arranged in the up and down arrangement, and the valve cavity is formed between upper valve seat, lower valve seat, the middle of upper valve seat is equipped with the valve rod of sliding connection, and the valve rod is from top to bottom and is fixedly connected with small valve clack at the bottom and is penetrated, and the bottom of small valve clack is equipped with the elastic component between the top of lower valve seat, and the big valve clack is also equipped between small valve clack and upper valve seat, and the valve rod includes upper valve rod and lower valve rod, and the diameter of upper valve rod is greater than the diameter of lower valve rod, and the top of big valve clack is equipped with the guide hole for the lower valve rod to pass through.

[0008] As further improvement, the side of the upper valve seat is provided with a sealing ring between the inner wall of the valve body.

[0009] As further improvement, the valve body is provided with a first limiting step and a second limiting step for fixing the upper valve seat and the lower valve seat respectively.

[0010] As further improvement, the lower valve seat is provided with a water passing opening.

[0011] As further improvement, the elastic component is a spiral spring.

[0012] As further improvement, the top of the lower valve seat is formed with a groove for fixing the elastic component, and the bottom of the small valve clack is conically arranged.

[0013] As further improvement, the big valve clack is provided with a sealing pad at each of the upper and lower ends, which abuts against the bottom of the upper valve seat and the top of the small valve clack respectively.

[0014] The utility model discloses a large flow fire hydrant pressure regulating device, its structure includes: the valve body connected to the bottom of fire hydrant, the valve body is the middle through structure of going through up and down, and the top of valve body is in communication with the water inlet end of fire hydrant bottom, and the bottom of valve body is equipped with the water inlet, and the valve body is fixed with upper valve seat and lower valve seat respectively, and upper valve seat, lower valve seat are arranged in the up and down arrangement, and the valve cavity is formed between upper valve seat, lower valve seat, the middle of upper valve seat is equipped with the valve rod of sliding connection, and the valve rod is from top to bottom and is fixedly connected with small valve clack at the bottom and is penetrated, and the bottom of small valve clack is equipped with the elastic component between the top of lower valve seat, and the big valve clack is also equipped between small valve clack and upper valve seat, and the valve rod includes upper valve rod and lower valve rod, and the diameter of upper valve rod is greater than the diameter of lower valve rod, and the top of big valve clack is equipped with the guide hole for the lower valve rod to pass through.

[0015] The utility model discloses a large flow fire hydrant pressure regulating device, its structure includes: the valve body connected to the bottom of fire hydrant, the valve body is the middle through structure of going through up and down, and the top of valve body is in communication with the water inlet end of fire hydrant bottom, and the bottom of valve body is equipped with the water inlet, and the valve body is fixed with upper valve seat and lower valve seat respectively, and upper valve seat, lower valve seat are arranged in the up and down arrangement, and the valve cavity is formed between upper valve seat, lower valve seat, the middle of upper valve seat is equipped with the valve rod of sliding connection, and the valve rod is from top to bottom and is fixedly connected with small valve clack at the bottom and is penetrated, and the bottom of small valve clack is equipped with the elastic component between the top of lower valve seat, and the big valve clack is also equipped between small valve clack and upper valve seat, and the valve rod includes upper valve rod and lower valve rod, and the diameter of upper valve rod is greater than the diameter of lower valve rod, and the top of big valve clack is equipped with the guide hole for the lower valve rod to pass through. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be simply introduced to the drawing needed to be used in the embodiment, should understand, the following drawings only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the range, for the ordinary skill in the art to come, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0017] Fig. 1 is a structural schematic view of a large-flow fire hydrant pressure regulating device provided by the present application;

[0018] Fig. 2 is an assembly structural schematic view of a pressure regulating device provided by the present application;

[0019] Fig. 3 is a structural schematic view of a valve rod provided by the present application;

[0020] Fig. 4 is a structural schematic view of an upper valve seat provided by the present application;

[0021] Fig. 5 is a structural schematic view of a large valve disc provided by the present application;

[0022] Fig. 6 is a structural schematic view of a lower valve seat provided by the present application.

[0023] In the figure: valve body-1, water inlet-11, upper valve seat-2, lower valve seat-3, valve rod-4, small valve disc-5, elastic assembly-6, large valve disc-7, upper valve rod-41, lower valve rod-42, guide hole-71, sealing ring-8, first limiting step-12, second limiting step-13, water passage-31, sealing gasket-72. DETAILED DESCRIPTION

[0024] In order to make the embodiments of the present application, all belong to the scope of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of the present application.

[0025] In the description of the utility model, the terms "first", "second" are only used for the purpose of description, and cannot be understood as the purpose of indicating the mode, technical scheme and advantages, and the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment, and obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments or implied relative importance or implicitly indicated the number of technical features obtained by the ordinary skilled person in the art without creative labor. Therefore, the features with "first", "second" can be explicitly or implicitly included one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly limited.

[0026] The existing large-flow fire hydrant in the use process, because the large-flow fire hydrant's water supply pressure is bigger, the valve is affected by strong water pressure, so that the valve needs to overcome greater resistance when opening, leading to the operator needs to exert greater effort to open the hydrant valve smoothly, not only increase the opening difficulty, also possible in the fire rescue emergency moment causes delay, influence rescue work's timeliness and efficiency, in order to solve the above technical problems, the case proposes the following technical scheme:

[0027] Referring to Figs. 1-6 The structure includes: the valve body 1 connected to the bottom of the fire hydrant, the valve body 1 is a through structure, the top of the valve body 1 is communicated with the water inlet end of the bottom of the fire hydrant, the bottom of the valve body 1 is provided with a water inlet 11, the valve body 1 is fixed with an upper valve seat 2 and a lower valve seat 3 respectively, the upper valve seat 2 and the lower valve seat 3 are arranged in an upper and lower arrangement, a valve cavity is formed between the upper valve seat 2 and the lower valve seat 3, the upper valve seat 2 is provided with a slidingly connected valve rod 4 in the middle, the valve rod 4 penetrates the upper valve seat 2 from top to bottom and is fixedly connected with a small valve disc 5 at the bottom, the small valve disc 5 is provided with an elastic assembly 6 between the bottom and the top of the lower valve seat 3, the small valve disc 5 and the upper valve seat 2 are further provided with a large valve disc 7, the valve rod 4 includes an upper valve rod 41 and a lower valve rod 42, the diameter of the upper valve rod 41 is greater than the diameter of the lower valve rod 42, the top of the large valve disc 7 is provided with a guide hole 71 for the lower valve rod 42 to pass through;

[0028] Among them, the middle of the large valve disc 7 is provided with a plurality of first through holes for the fire water to enter the fire hydrant from the valve cavity, the diameter of the bottom of the first through hole is smaller than the diameter of the small valve disc 5, so that when the fire hydrant is in the closed state, the small valve disc 5 and the large valve disc 7 are tightly fitted, forming a good sealing effect, preventing the fire water in the valve cavity from leaking;

[0029] Meanwhile, the upper valve seat 2 is provided with a plurality of second through holes penetrating up and down, for allowing the fire water to flow smoothly, specifically, when the small valve disc 5 and the large valve disc 7 are opened, the second through holes become the passage for the fire water to flow, ensuring that the water flow can smoothly pass through the valve seat and enter the inside of the fire hydrant. Therefore, the fire hydrant can quickly and stably guide the fire water into the hydrant body when it is used, providing strong water flow supply and effectively supporting the fire fighting work.

[0030] Therefore, when the fire hydrant is used, the top of the valve body 1 is fixedly connected with the bottom of the fire hydrant through bolts, and the bottom is connected with the fire water inlet pipeline, and the top end of the valve rod 4 is coaxially connected with the bottom of the fire hydrant connecting rod, so that when the fire hydrant is in the closed state, the fire hydrant connecting rod drives the valve rod 4 to move upward, and then the small valve disc 5 moves upward synchronously with the valve rod 4, and the elastic assembly 6 is in the upward unfolding state, at this time, the top of the large valve disc 7 is sealingly attached to the bottom of the upper valve seat 2, and the bottom of the large valve disc 7 is sealingly attached to the top of the small valve disc 5, and the fire water enters the valve cavity through the water inlet 11 at the bottom of the valve body 1; when the fire hydrant needs to be opened, the valve rod 4 is driven downward by the connecting rod of the fire hydrant, promoting the upper valve rod 41 to move downward along the upper valve seat 2, at the same time, the lower valve rod 42 pushes the small valve disc 5 to move downward, and the elastic assembly 6 is compressed downward, when the small valve disc 5 is opened, the fire water begins to flow upward from the valve cavity through the first through hole of the large valve disc 7 and the second through hole of the upper valve seat 2 in turn, at this time, the pressure difference between the upper and lower ends of the large valve disc 7 gradually decreases and tends to be balanced, at this time, the valve rod 4 continues to move downward, so that the bottom of the upper valve rod 41 contacts the top of the large valve disc 7 and pushes the large valve disc 7 to open downward, finally realizing the full opening state of the valve, therefore, by opening the small valve disc 5 first, the fire water begins to flow upward, thereby balancing the pressure of the large valve disc 7 at the upper and lower ends, and then opening the large valve disc 7, which greatly reduces the resistance during opening, thereby effectively reducing the operation difficulty, so that the operator can open the fire hydrant more quickly and smoothly, thereby improving the fire rescue efficiency, ensuring timely water supply, and improving the response speed and rescue effect of the overall fire fighting operation;

[0031] Meanwhile, during use, when only the small valve disc 5 is opened, the upward flow of the fire water will form an upward pushing force on the large valve disc 7, promoting the top of the large valve disc 7 to keep in contact with the bottom of the upper valve seat 2, at this time, the fire water can only be discharged through the first through hole of the large valve disc 7, controlling the water flow of the fire hydrant; therefore, water supply can also be realized by only opening the small valve disc 5, realizing the adjustment of the water flow of the valve body.

[0032] At the same time, when only the small valve disc 5 is opened during use, the water pressure generated by the upward flow of the fire-fighting water will form an upward thrust on the large valve disc 7, prompting the top of the large valve disc 7 to keep in close contact with the bottom of the upper valve seat 2. In this state, the fire-fighting water can only be discharged through the first through hole of the large valve disc 7, thereby controlling the water flow of the fire hydrant. Since the large valve disc 7 still remains in a relatively closed state, the water supply through the small valve disc 5 can achieve precise adjustment of the water flow, avoiding excessive water flow waste or flow out of control.

[0033] The upper valve seat 2 side is provided with a sealing ring 8 between the inner wall of the valve body 1, and the sealing ring 8 is provided with two, which are distributed on the upper valve seat 2 side wall in an up-down manner. The sealing ring 8 can effectively form a double seal between the upper valve seat 2 and the valve body 1, ensuring that the fire-fighting water in the valve cavity will not leak during valve operation.

[0034] The valve body 1 is respectively provided with a first limiting step 12 and a second limiting step 13 for fixing the upper valve seat 2 and the lower valve seat 3. The first limiting step 12 cooperates with the bottom of the upper valve seat 2, and the second limiting step 13 cooperates with the bottom of the lower valve seat 3, which ensures the stable fixation of the upper valve seat 2 and the lower valve seat 3 in the valve body 1, and facilitates the installation of the upper valve seat 2 and the lower valve seat 3, and also prevents them from displacement or loosening during use.

[0035] The lower valve seat 3 is provided with a water passing port 31, and in use, the fire-fighting water enters the valve cavity through the water inlet 11 and the water passing port 31 in sequence.

[0036] The elastic component 6 is a spiral spring, so when the fire hydrant connecting rod moves upward, the elastic component 6 pushes the small valve disc 5 upward, thereby ensuring that the small valve disc 5 and the large valve disc 7 are in a closed state in the closed state of the fire hydrant, preventing the fire-fighting water from leaking.

[0037] The top of the lower valve seat 3 is formed with a groove for fixing the elastic component 6, and the bottom of the small valve disc 5 is conically arranged. The groove and the conical structure cooperate with the upper and lower ends of the spring to fix the spiral spring, ensuring the installation and fixation of the spiral spring, and avoiding displacement or loosening during valve operation.

[0038] The large valve disc 7 is respectively provided with a sealing pad 72 at the upper and lower ends, which abuts against the bottom of the upper valve seat 2 and the top of the small valve disc 5, effectively ensuring the sealing performance of the valve under high pressure and harsh working environment. In the closed state of the valve, the sealing pad 72 prevents fluid leakage by closely cooperating with the bottom of the upper valve seat 2 and the top of the small valve disc 5, ensures that the medium inside the valve cavity does not leak, and improves the safety and reliability of the valve body.

[0039] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-flow-rate fire hydrant pressure regulating device, the structure of which includes: A valve body (1) connected to the bottom of a fire hydrant is a through-hole structure. The top of the valve body (1) is connected to the water inlet at the bottom of the fire hydrant, and the bottom of the valve body (1) is provided with a water inlet (11). The valve body (1) is characterized in that: an upper valve seat (2) and a lower valve seat (3) are fixed inside the valve body (1). The upper valve seat (2) and the lower valve seat (3) are arranged vertically, and a valve cavity is formed between the upper valve seat (2) and the lower valve seat (3). A valve stem (4) is provided in the middle of the upper valve seat (2). The valve stem (4) passes through the upper valve seat (2) from top to bottom and is fixedly connected to the bottom of the small valve disc (5). An elastic component (6) is provided between the bottom of the small valve disc (5) and the top of the lower valve seat (3). A large valve disc (7) is also provided between the small valve disc (5) and the upper valve seat (2). The valve stem (4) includes an upper valve stem (41) and a lower valve stem (42). The diameter of the upper valve stem (41) is larger than the diameter of the lower valve stem (42). The top of the large valve disc (7) is provided with a guide hole (71) for the lower valve stem (42) to pass through.

2. The high-flow-rate fire hydrant pressure regulating device as described in claim 1, characterized in that: A sealing ring (8) is provided between the side of the upper valve seat (2) and the inner wall of the valve body (1).

3. The high-flow-rate fire hydrant pressure regulating device as described in claim 2, characterized in that: The valve body (1) is provided with a first limiting step (12) and a second limiting step (13) for fixing the upper valve seat (2) and the lower valve seat (3).

4. The high-flow-rate fire hydrant pressure regulating device as described in claim 1, characterized in that: The lower valve seat (3) is provided with a water inlet (31).

5. A high-flow-rate fire hydrant pressure regulating device as described in any one of claims 1-4, characterized in that: The elastic component (6) is a helical spring.

6. The high-flow-rate fire hydrant pressure regulating device as described in claim 5, characterized in that: The lower valve seat (3) has a groove for fixing the elastic component (6) at the top, and the bottom of the small valve disc (5) is tapered.

7. A high-flow-rate fire hydrant pressure regulating device as described in claim 6, characterized in that: The large valve disc (7) is provided with sealing gaskets (72) at its upper and lower ends, which are close to the bottom of the upper valve seat (2) and the top of the small valve disc (5).

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