Quick connector for fire hose

Abstract

The utility model discloses a fire hose quick connector which comprises an elbow connector and a quick connector connected with the elbow connector, the quick connector comprises a quick connector pipe body, a conical steel ball hole with a small inner side aperture and a large outer side aperture is formed in the pipe wall of the quick connector pipe body in the radial direction, a steel ball is embedded in the conical steel ball hole, and a connecting sleeve is arranged on the outer side of the steel ball. The connecting sleeve is sleeved with the quick connector pipe body, a pressure spring is arranged between the connecting sleeve and the quick connector pipe body, one end of the pressure spring is connected with a protruding ring on the periphery of the quick connector pipe body, the other end of the pressure spring is connected with a limiting ring on the inner side of the connecting sleeve, and the steel ball is connected with a limiting groove in the periphery of the elbow connector in a matched mode. A concave sealing groove is formed in the circumference of the inner side of the pipe wall of the quick connector pipe body, a sealing ring is embedded in the sealing groove, the sealing ring comprises a gasket and a sealing ring which are of an integrated structure, and a deformation groove is formed between the gasket and the sealing ring. According to the fire hose quick connector, the sealing performance is improved through the deformation groove on the basis of quick connection.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting equipment, in particular to a fire fighting hose quick connector. Background Art

[0002] With the further intensification of urbanization, high-rise buildings can be seen everywhere, and fire safety has received more and more attention. General buildings are equipped with fire-fighting equipment, such as conventional fire extinguishers, fire hydrants, etc. The fire hydrants are equipped with quick connectors connected with soft water pipes and water gun heads. When in use, the connectors are connected to the corresponding positions of the fire hydrants, and the fire hydrants are opened, and high-pressure water can be sprayed out through the connectors, soft water pipes, and water gun heads.

[0003] The existing fire-fighting joints are generally directly connected to the soft water pipe through a cup sleeve. Even if the soft water pipe and the cup sleeve are tightly connected, the traditional fire hose quick connector remains unchanged, and it cannot be connected immediately every time, which is inconvenient for people to use. Once it fails to connect in an emergency, the consequences will be disastrous, and people's lives and property safety cannot be ensured. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a fire hose quick connector, which can connect the fire hose to the nozzle through the quick connector, making it easy for people to use and effectively ensuring the safety of people's lives and properties.

[0005] To solve the above problems, the technical solution adopted by the utility model is as follows: a fire hose quick connector, including an elbow joint and a quick connector connected thereto, the quick connector including a quick connector body, a tube wall of the quick connector body radially provided with a tapered steel ball hole with a small inner aperture and a large outer aperture, a steel ball embedded in the tapered steel ball hole, a connecting sleeve provided on the outer side of the steel ball, the connecting sleeve sleeve connected to the quick connector body, a pressure spring provided between the connecting sleeve and the quick connector body, one end of the pressure spring connected to a convex ring on the outer periphery of the quick connector body, the other end of the pressure spring connected to a limiting ring on the inner side of the connecting sleeve, the steel ball cooperates to connect to a limiting groove located on the outer periphery of the elbow joint; an inner circumference of the tube wall of the quick connector body is provided with an inwardly concave sealing groove, a sealing ring is embedded and installed in the sealing groove, the sealing ring includes a gasket and a sealing ring of an integrated structure, and a deformation groove is provided between the gasket and the sealing ring. The utility model is a kind of elbow joint. When the elbow joint is connected to the quick joint, the sealing ring is compressed so that the sealing ring is close to the gasket, thereby compressing the deformation groove, causing the deformation groove to generate a spring sealing force, thereby achieving efficient sealing performance on the basis of quickly realizing the quick connection between the elbow joint and the quick joint.

[0006] One end of the elbow joint is provided with a direct joint, the end face of the direct joint matches the end face of the sealing ring, and the other end of the elbow joint is provided with a nut.

[0007] The outer side of the limit ring is provided with a clamping ring located at the outer periphery of the quick connector body, and the clamping ring is engaged with the clamping groove of the quick connector body wall. The clamping ring is used to cooperate with the limit ring to prevent the connecting sleeve from detaching from the quick connector body under the action of the pressure spring.

[0008] The outer periphery of the quick joint tube body is provided with a step with an inclined surface structure, which is used for sleeve connection of the water hose to prevent separation and water leakage.

[0009] The fire hose quick connector of the utility model improves sealing performance through the deformation groove on the basis of quick connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings:

[0011] Figure 1 It is a three-dimensional structural schematic diagram of a fire hose quick connector of the utility model;

[0012] Figure 2 This is a schematic diagram of the explosion installation structure of a fire hose quick connector of the utility model;

[0013] Figure 3 It is a schematic diagram of the internal structure of the quick connector in the utility model. DETAILED DESCRIPTION

[0014] like Figure 1-3 As shown, a fire hose quick connector of the utility model comprises an elbow joint 2 and a quick connector connected thereto, wherein the quick connector comprises a quick connector tube body 12, wherein the tube wall of the quick connector tube body 12 is radially provided with a tapered steel ball hole 8 with a small inner aperture and a large outer aperture, wherein a steel ball 7 is embedded in the tapered steel ball hole 8, wherein a connecting sleeve 14 is provided on the outer side of the steel ball 7, wherein the connecting sleeve 14 is sleeved on the quick connector tube body 12, wherein a pressure spring 9 is provided between the connecting sleeve 14 and the quick connector tube body 12, wherein one end of the pressure spring 9 is connected to a convex ring 15 on the outer periphery of the quick connector tube body, and the other end of the pressure spring 9 is connected to a limiting ring 11 on the inner side of the connecting sleeve 14, and the steel ball 7 is cooperatively connected to a limiting groove 3 located on the outer periphery of the elbow joint. When the elbow joint 2 is not connected to the quick connector, the inner wall of the connecting sleeve 14 presses the steel ball 7, and the steel ball 7 fits the inner aperture of the tapered steel ball hole 8. When the elbow joint 2 needs to be connected to the quick connector, the connecting sleeve 14 manually presses down the pressure spring 9, and the steel ball 7 is pushed to the outer aperture of the tapered steel ball hole 8 by the push of the elbow joint 2, and then the connecting sleeve 14 is relaxed. The pressure spring 9 pushes the connecting sleeve 14 to reset, and the connecting sleeve 14 pushes the steel ball 7 to move to the inner aperture of the tapered steel ball hole 8, and at the same time, the limiting groove 3 is stuck to prevent the elbow joint and the quick connector from loosening.

[0015] In order to improve the sealing performance of the connection, a concave sealing groove 10 is provided on the inner circumference of the tube wall of the quick connector tube body, and a sealing ring is embedded and installed in the sealing groove 10. The sealing ring includes a gasket 5 and a sealing ring 6 of an integral structure, and a deformation groove 18 is provided between the gasket 5 and the sealing ring 6. The connection and release of the anti-bend pipe joint and the quick connector are realized during the up and down movement of the connecting sleeve 14, and the clamping force between the steel ball 7 and the limiting groove 3 is utilized during the connection process to realize that the gasket 5 and the sealing ring 6 are compressed and deformed in the deformation groove 18 when the bend pipe joint is connected to the quick connector to produce good sealing performance and prevent water leakage.

[0016] One end of the elbow joint 2 is provided with a direct joint 4, the end face of the direct joint 4 matches the end face of the sealing ring 6, and the other end of the elbow joint 2 is provided with a nut 1, which is connected to the fire pipe. The outer periphery of the quick joint pipe body 12 is provided with a step 13 of an inclined structure, which is connected to a flexible fire hose.

[0017] As a preferred structure, a clamping ring 17 is provided on the outer side of the limiting ring 11 and located at the outer periphery of the quick connector tube body. The clamping ring 17 is engaged with a clamping groove 16 on the tube wall of the quick connector tube body 12 .

[0018] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A fire hose quick connector, characterized in that: The invention comprises an elbow joint (2) and a quick joint connected thereto, wherein the quick joint comprises a quick joint pipe body (12), a conical steel ball hole (8) having a small inner diameter and a large outer diameter is radially arranged on the pipe wall of the quick joint pipe body (12), a steel ball (7) is embedded in the conical steel ball hole (8), a connecting sleeve (14) is arranged on the outer side of the steel ball (7), the connecting sleeve (14) is sleeved on the quick joint pipe body (12), a pressure spring (9) is arranged between the connecting sleeve (14) and the quick joint pipe body (12), one end of the pressure spring (9) is connected to the quick joint pipe body (12), and the pressure spring (9) is connected to the quick joint pipe body (12). A convex ring (15) is connected to the outer periphery of the quick connector tube body, the other end of the pressure spring (9) is connected to the limiting ring (11) inside the connecting sleeve (14), and the steel ball (7) is matched to connect to the limiting groove (3) located on the outer periphery of the elbow joint; an inner circumference of the tube wall of the quick connector tube body is provided with an inwardly concave sealing groove (10), a sealing ring is embedded and installed in the sealing groove (10), and the sealing ring includes a gasket (5) and a sealing ring (6) of an integrated structure, and a deformation groove (18) is provided between the gasket (5) and the sealing ring (6).

2. A fire hose quick connector according to claim 1, characterized in that: One end of the elbow joint (2) is provided with a direct joint (4), the end surface of the direct joint (4) matches the end surface of the sealing ring (6), and the other end of the elbow joint (2) is provided with a nut (1).

3. A fire hose quick connector according to claim 1, characterized in that: A clamping ring (17) located at the outer periphery of the quick connector tube body is provided on the outer side of the limiting ring (11), and the clamping ring (17) is engaged with a clamping groove (16) on the tube wall of the quick connector tube body (12).

4. A fire hose quick connector according to claim 1, characterized in that: The outer periphery of the quick connector tube body (12) is provided with a step (13) with an inclined surface structure.

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