Quick connecting and sealing device for fire hose

Abstract

The utility model relates to the technical field of fire fighting equipment, and discloses a fire hose quick connecting and sealing device which comprises a connecting male head, the outer side of the connecting male head is sleeved with a connecting female head, the outer side of the connecting female head is fixedly sleeved with a fixing seat, a cavity is formed in the fixing seat, and a piston mechanism is arranged in the cavity; a sealing seat is arranged on the inner wall of the female connector, a mounting groove is formed in the inner wall of the sealing seat, a sealing mechanism is arranged in the mounting groove, a groove is formed in the outer side of the male connector, and a limiting mechanism is arranged between the groove and the female connector. Compared with the prior art, the fire hose has the following advantages and effects that by arranging the sealing mechanism, a tiny gap between the connecting male head and the connecting female head can be effectively filled through the expanded sealing air bag, the purpose of preventing fire fighting water from leaking from the connecting part under the pressure effect is achieved, and therefore the sealing performance and reliability of the fire hose during water passing are guaranteed, and the service life of the fire hose is prolonged. And a powerful guarantee is provided for smooth fire-fighting operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire-fighting equipment, in particular to a fire hose quick connection and sealing device. BACKGROUND

[0002] Fire-fighting work is related to people's life safety, and the use of fire-fighting equipment affects the speed of fire-fighting personnel. The fire hose is the most basic equipment in fire-fighting equipment, and is used to transport high-pressure water or foam fire-retardant liquid. The traditional fire hose is lined with rubber and wrapped with linen braid. Advanced fire hoses are made of polyurethane and other polymer materials. Both ends of the fire hose have metal connectors that can be connected to another hose to extend the distance or connected to a nozzle to increase the liquid injection pressure.

[0003] After searching, the patent document with authorization announcement number CN222351731U discloses a fire hose quick connection device, relating to the technical field of fire-fighting equipment, comprising a first connector and a second connector, a first connecting ring is welded on the left side wall of the first connector, a second connecting ring is connected to the right side wall of the second connector, a first fire hose is fixedly connected to the left side wall of the first connecting ring, a second fire hose is fixedly connected to the right side wall of the second connector, an installation groove is formed in the right side wall of the first connector, an L-shaped clamping block is installed on one side wall of the installation groove, and an installation block is fixedly connected to the left side wall of the second connector; by setting the first connector and the second connector, the installation block is inserted into the installation groove, and the L-shaped clamping block is connected with the L-shaped clamping groove, thereby completing the quick positioning and connection of the first connector and the second connector, reducing the time of connecting two fire hoses, and facilitating the quick performance of fire-fighting work.

[0004] In actual use, it is found that the existing device has poor sealing performance when connecting the fire hose, which can easily cause water leakage at the connection, thereby affecting the fire-fighting work. Therefore, we propose a fire hose quick connection and sealing device to solve the above problems. Practical new type content

[0005] The purpose of the present application is to solve the problems in the prior art, such as poor sealing performance when connecting the fire hose, which can easily cause water leakage at the connection, thereby affecting the fire-fighting work. Therefore, a fire hose quick connection and sealing device is proposed.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a quick connection and sealing device for fire hoses, including a male connector, a female connector sleeved on the outside of the male connector, a fixed seat fixedly sleeved on the outside of the female connector, a cavity opened in the fixed seat, and a piston mechanism arranged in the cavity; a sealing seat is arranged on the inner wall of the female connector, an installation groove is opened on the inner wall of the sealing seat, a sealing mechanism is arranged in the installation groove, a groove is opened on the outside of the male connector, and a limit mechanism is arranged between the groove and the female connector.

[0007] A further feature of this application is that: a connecting seat is provided on the outer side of the male connector, an internal thread is provided on the inner wall of the connecting seat, an external thread is provided on the outer side of the female connector, the connecting seat and the female connector are threadedly connected by the internal thread and the external thread, a sliding seat is slidably sleeved on the male connector, and the right side of the sliding seat is rotatably connected to the left side of the connecting seat.

[0008] By adopting the above technical solution and by setting a connecting seat, the connecting seat and the connecting female head can be threaded together, so as to achieve the purpose of tightly connecting the connecting male head and the connecting female head. A slider is set at the bottom of the slide seat, and a sliding groove is opened on the outer side of the connecting male head, so that the slider can slide left and right in the sliding groove.

[0009] A further configuration of this application is as follows: the piston mechanism includes a piston plate, a piston rod, and a push plate. The piston plate is slidably installed on the inner wall of the cavity. The piston rod is fixedly installed on the left side of the piston plate. The left end of the piston rod extends to the outside of the fixed seat. The push plate is fixedly installed on the left end of the piston rod.

[0010] By adopting the above technical solution and by setting up a piston mechanism, the push plate can drive the piston plate to move to the right, thereby achieving the purpose of compressing the gas in the cavity into the vent pipe through the piston plate.

[0011] A further feature of this application is that the same first spring is fixedly installed on the right side of the piston plate and the right inner wall of the cavity.

[0012] By adopting the above technical solution and by setting a first spring, the piston plate can be moved to the left by the rebound force of the first spring, so as to achieve the purpose of driving the push plate to reset when the male connector and the female connector are disassembled.

[0013] A further feature of this application is that a first ball bearing is provided on the left side of the push plate, and the right side of the connecting seat is adapted to the first ball bearing.

[0014] By adopting the above technical solution and by setting the first ball, the friction between the connecting seat and the push plate can be reduced.

[0015] The further arrangement of the application is that the sealing mechanism comprises a sealing air bag and a ventilation pipe, the sealing air bag is arranged in the installation groove, and the ventilation pipe is arranged between the sealing air bag and the cavity.

[0016] By adopting the above technical scheme, the compressed gas in the cavity can be filled into the sealing air bag through the ventilation pipe by the sealing mechanism, the small gap between the connecting male head and the connecting female head can be effectively filled by the expanded sealing air bag, and the purpose of preventing the fire water from leaking from the connecting part under the action of pressure is achieved.

[0017] The further arrangement of the application is that the limiting mechanism comprises a second ball, a sliding plate and a second spring, the second ball and the sliding plate are slidingly arranged in the groove, the sliding plate is below the second ball, and the second spring is fixedly arranged on the bottom of the sliding plate and the inner wall of the bottom of the groove.

[0018] By adopting the above technical scheme, the second spring can drive the second ball to move upward by the elastic force, and the purpose of clamping the second ball and the ball groove is achieved.

[0019] The further arrangement of the application is that the ball groove is arranged on the left side of the sealing seat in the inner wall of the connecting female head, and the second ball is matched with the ball groove.

[0020] By adopting the above technical scheme, the second ball and the ball groove can be clamped by the ball groove, and the purpose of preliminary limiting and fixing of the connecting male head and the connecting female head is achieved.

[0021] The beneficial effects of the application are:

[0022] (1) The second ball can be clamped into the ball groove by the cooperation of the second ball, the second spring, the sliding plate and the ball groove, the preliminary limiting and fixing of the connecting male head and the connecting female head are achieved, and the purpose of ensuring the relative position stability of the two in the axial direction is achieved.

[0023] (2) The connecting seat can drive the piston plate to move rightward by the cooperation of the connecting seat, the first ball, the push plate, the piston rod and the piston plate, the gas in the cavity can flow into the sealing air bag through the ventilation pipe, the small gap between the connecting male head and the connecting female head can be effectively filled by the expanded sealing air bag, the purpose of preventing the fire water from leaking from the connecting part under the action of pressure is achieved, and the sealing property and reliability of the fire hose when the water is flowing are ensured, which provides a strong guarantee for the smooth performance of the fire operation. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative effort based on these drawings are within the scope of protection of the present application.

[0025] Figure 1 is a three-dimensional structural schematic diagram of a fire hose quick connection and sealing device of the present application;

[0026] Figure 2 is a schematic diagram of the internal structure of a female connector of a fire hose quick connection and sealing device of the present application;

[0027] Figure 3 is a schematic diagram of a partial cross-sectional structure of a fire hose quick connection and sealing device of the present application;

[0028] Figure 4 is a schematic diagram of structure A of a fire hose quick connection and sealing device of the present application;

[0029] Figure 5 is a schematic diagram of structure B of a fire hose quick connection and sealing device of the present application.

[0030] In the figure: 1, male connector; 2, female connector; 3, fixed seat; 4, cavity; 5, sealing seat; 6, groove; 101, connecting seat; 102, sliding seat; 401, piston plate; 402, piston rod; 403, push plate; 404, first spring; 405, first ball; 501, sealing air bag; 502, air pipe; 601, second ball; 602, sliding plate; 603, second spring; 604, ball groove. DETAILED DESCRIPTION

[0031] The technical solutions of the present application will be described in detail below in conjunction with specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0032] Referring to Figures 1-5 , the present application provides a fire hose quick connection and sealing device, comprising a male connector 1, a female connector 2 is sleeved outside the male connector 1, a fixed seat 3 is fixedly sleeved outside the female connector 2, a cavity 4 is formed in the fixed seat 3, and a piston mechanism is arranged in the cavity 4; a sealing seat 5 is arranged on the inner wall of the female connector 2, an installation groove is formed in the inner wall of the sealing seat 5, a sealing mechanism is arranged in the installation groove, a groove 6 is formed on the outer side of the male connector 1, and a limiting mechanism is arranged between the groove 6 and the female connector 2.

[0033] Specifically, the outer side of the male connector 1 is provided with a connecting seat 101, the inner wall of the connecting seat 101 is provided with an internal thread, the outer side of the female connector 2 is provided with an external thread, the connecting seat 101 and the female connector 2 are threadedly connected through the internal thread and the external thread, the male connector 1 is slidably sleeved with a sliding seat 102, and the right side of the sliding seat 102 is rotationally connected with the left side of the connecting seat 101.

[0034] Specifically, the piston mechanism includes a piston plate 401, a piston rod 402, and a push plate 403, the piston plate 401 is slidably installed on the inner wall of the cavity 4, the piston rod 402 is fixedly installed on the left side of the piston plate 401, the left end of the piston rod 402 extends to the outer side of the fixed seat 3, and the push plate 403 is fixedly installed on the left end of the piston rod 402.

[0035] Specifically, the right side of the piston plate 401 and the right side inner wall of the cavity 4 are fixedly installed with a same first spring 404.

[0036] Specifically, the left side of the push plate 403 is provided with a first ball 405, and the right side of the connecting seat 101 is matched with the first ball 405.

[0037] Specifically, the sealing mechanism includes a sealing air bag 501 and a breather pipe 502, the sealing air bag 501 is arranged in the mounting groove, the sealing air bag 501 and the cavity 4 are provided with a same breather pipe 502, and the sealing air bag 501 is matched with the male connector 1.

[0038] Specifically, the limiting mechanism includes a second ball 601, a sliding plate 602, and a second spring 603, the second ball 601 and the sliding plate 602 are slidably installed in the groove 6, the sliding plate 602 is located below the second ball 601, and the bottom of the sliding plate 602 and the bottom inner wall of the groove 6 are fixedly installed with a same second spring 603.

[0039] Specifically, the inner wall of the female connector 2 is provided with a ball groove 604, the ball groove 604 is located on the left side of the sealing seat 5, and the second ball 601 is matched with the ball groove 604.

[0040] In the application, when the quick connecting and sealing device for fire hose is used, firstly, the connecting male head 1 is inserted into the connecting female head 2 in the axial direction, and in the process of insertion, the second ball 601 in the groove 6 is in contact with the inner wall of the connecting female head 2 and is subjected to extrusion, the extrusion force makes the second ball 601 overcome the elastic force of the second spring 603, drives the sliding plate 602 to slide downward along the inner wall of the groove 6, and the second spring 603 is compressed and stores elastic potential energy, when the connecting male head 1 is inserted to a certain position, i.e. the second ball 601 and the ball groove 604 formed in the inner wall of the connecting female head 2 are in the same axial position, the elastic potential energy stored by the second spring 603 is released, the sliding plate 602 and the second ball 601 are pushed to move upward, until the second ball 601 is completely clamped into the ball groove 604, the preliminary limiting and fixing of the connecting male head 1 and the connecting female head 2 can be realized, and the relative position stability of the two in the axial direction is ensured;

[0041] Subsequently, in order to further enhance the stability of the connection, the operator manually rotates the connecting seat 101 outside the connecting male head 1, since the inner wall of the connecting seat 101 is provided with an internal thread, and the outer side of the connecting female head 2 is provided with an external thread matched with the internal thread, in the process of rotating the connecting seat 101, through the screw transmission of the screw pair, the connecting seat 101 moves linearly in the axial direction of the connecting female head 2, the connecting male head 1 and the connecting female head 2 can be tightly connected together, and the purpose of mechanical structure fastening is achieved;

[0042] In the process of rotating and axially moving of the connecting seat 101, the right side end surface thereof is in contact with and subjected to extrusion with the first ball 405 on the left side of the push plate 403, the first ball 405 as a rolling body can effectively reduce the friction force, so that the push plate 403 can smoothly move to the right when subjected to extrusion, the right movement of the push plate 403 drives the piston rod 402 fixedly connected thereto to move to the right synchronously, and further drives the piston plate 401 to slide to the right along the inner wall in the cavity 4 in the fixed seat 3, in the process of right movement of the piston plate 401, the first spring 404 between the right side of the piston plate 401 and the right side inner wall of the cavity 4 is compressed and stores elastic potential energy, at the same time, due to the right movement of the piston plate 401, the volume of the gas in the cavity 4 is compressed, and the gas pressure is increased;

[0043] According to the gas flow principle, under the action of pressure difference, the gas in the cavity 4 flows into the sealing air bag 501 installed in the installation groove of the inner wall of the sealing seat 5 through the air pipe 502. With the continuous filling of the gas, the sealing air bag 501 can gradually expand, and its outer surface closely fits the outer side wall of the connecting male head 1, forming a reliable sealing interface. This sealing method utilizes the elastic deformation characteristics of the sealing air bag 501, can realize effective filling of the small gap between the connecting male head 1 and the connecting female head 2, prevents the leakage of fire water from the connection part under the action of pressure, thereby realizes the sealing and reliability of the fire hose when the water is flowing, and provides a strong guarantee for the smooth progress of the fire fighting operation.

Claims

1. A quick connect and seal device for fire hose, characterized by, The utility model provides a connecting male head (1) is provided with connecting female head (2) outside, connecting female head (2) is provided with fixed seat (3) outside fixedly, and fixed seat (3) is provided with cavity (4) inside, and piston mechanism is arranged in cavity (4). The inner wall of the connecting female head (2) is provided with a sealing seat (5), the inner wall of the sealing seat (5) is provided with an installation groove, the installation groove is provided with a sealing mechanism, and the outer side of the connecting male head (1) is provided with a groove (6), the groove (6) is provided with a limiting mechanism between the connecting female head (2).

2. A fire hose quick connect and seal device according to claim 1, wherein: The outer side of the connecting male head (1) is provided with a connecting seat (101), the inner wall of the connecting seat (101) is provided with an internal thread, the outer side of the connecting female head (2) is provided with an external thread, the connecting seat (101) and the connecting female head (2) are connected through the internal thread and the external thread, and the connecting male head (1) is provided with a sliding seat (102) which is slidably arranged on the connecting male head (1).

3. A fire hose quick connect and seal device according to claim 2, wherein: The piston mechanism comprises a piston plate (401), a piston rod (402) and a push plate (403), the piston plate (401) is slidably installed in the inner wall of the cavity (4), the piston rod (402) is fixedly installed on the left side of the piston plate (401), the left end of the piston rod (402) extends to the outside of the fixed seat (3), and the push plate (403) is fixedly installed on the left end of the piston rod (402).

4. A fire hose quick connect and seal device as defined in claim 3, wherein: The right side of the piston plate (401) and the right side inner wall of the cavity (4) are fixedly installed with a same first spring (404).

5. A fire hose quick connect and seal device as defined in claim 3, wherein: The left side of the push plate (403) is provided with a first ball (405), and the right side of the connecting seat (101) is matched with the first ball (405).

6. A fire hose quick connect and seal device as defined in claim 1 wherein: The sealing mechanism comprises a sealing air bag (501) and an air pipe (502), the sealing air bag (501) is arranged in the installation groove, the sealing air bag (501) and the cavity (4) are provided with a same air pipe (502), and the sealing air bag (501) is matched with the connecting male head (1).

7. A fire hose quick connect and seal device as defined in claim 1 wherein: The limiting mechanism comprises a second ball (601), a sliding plate (602) and a second spring (603), the second ball (601) and the sliding plate (602) are slidably installed in the groove (6), the sliding plate (602) is located below the second ball (601), and the bottom of the sliding plate (602) and the bottom inner wall of the groove (6) are fixedly installed with a same second spring (603).

8. A fire hose quick connect and seal device according to claim 7, wherein: The inner wall of the connecting female head (2) is provided with a ball groove (604), the ball groove (604) is located on the left side of the sealing seat (5), and the second ball (601) is matched with the ball groove (604).

Images