Fire hose coupling sealing and reinforcing structure

Abstract

The utility model relates to fire -fighting equipment technical field discloses a kind of fire hose interface sealing reinforcement structure, including first connector and second connector, first connector outside is fixedly installed with multiple buckle grooves and buckle claw, second connector outside is also fixedly installed with multiple buckle grooves and buckle claw, and buckle groove and buckle claw are sequentially spaced arrangement, first connector inside is equipped with first installation groove, first connector inside is fixedly installed with flow guide portion near first installation groove.In the inside of first connector and second connector, first active sealing ring and second active sealing ring are respectively arranged, which can realize the sealing function after the connection of first connector and second connector.

Description

Technical Field

[0001] This utility model relates to the field of fire protection equipment technology, and in particular to a fire hose interface sealing and reinforcement structure. Background Technology

[0002] Fire hoses are key fire-fighting equipment used to transport water during fire fighting and rescue operations. They are typically composed of an inner rubber layer, a fiber reinforcement layer, and an outer rubber layer. Fire hose connectors are components used to connect fire hoses to fire-fighting equipment and have a quick-connect function.

[0003] The structure of a fire hose includes the hose body, sealing ring, and limiting mechanism to ensure stable water flow. When a fire hose is connected to other fire-fighting equipment through a connector, the higher the water flow, the more likely leakage will occur at the connector. When the water flow increases, the fluid pressure inside the pipe increases non-linearly. The high-pressure water flow generates significant static pressure load and dynamic pressure impact on the inner wall of the connector. For internal snap-fit ​​connectors, this will force the interface to make slight displacement, which will damage the sealing surface fit. Furthermore, the water hammer effect at the moment of high flow start-up and shutdown will exacerbate the fatigue damage of the sealing structure. The seal of the connector depends on the elastic deformation of the rubber sealing ring. However, after long-term use, material aging, installation defects, and pressure fatigue will cause the sealing performance to gradually decline. High-pressure water flow can easily break through the defects and form a leakage channel. Utility Model Content

[0004] The purpose of this utility model is to provide a sealing and reinforcement structure for fire hose interfaces, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A fire hose connection sealing and reinforcement structure includes a first connector and a second connector. The first connector has multiple locking grooves and locking claws fixedly installed on its outer side. The second connector also has multiple locking grooves and locking claws fixedly installed on its outer side, with the locking grooves and locking claws arranged at intervals. The first connector has a first mounting groove on its inner side. A flow guide is fixedly installed on the inner side of the first connector near the first mounting groove. A first active sealing ring is inserted into the first mounting groove. A passive sealing ring is movably installed inside the first active sealing ring. The second connector has a second mounting groove on its inner side, and a second active sealing ring is fitted inside the second mounting groove.

[0007] As a further preferred embodiment of this utility model, the flow guide is arranged in a ring shape along the inner side of the first connector, and the longitudinal section of the flow guide is a slope structure, and the slope angle on the side near the first mounting groove is greater than the slope angle on the other side of the flow guide. By setting the flow guide, the flow channel of the high-pressure water flow near the inner wall of the first connector can be narrowed and the flow can be guided to impact the force ring, thereby pushing the passive sealing ring.

[0008] As a further preferred embodiment of this utility model, a first sealing groove is provided on the inner side of the first active sealing ring. The opening of the first sealing groove can provide sealing conditions for the connection between the first active sealing ring and the passive sealing ring. At the same time, the setting of the first active sealing ring and the second active sealing ring can provide an active sealing effect at the connection point after the first connector and the second connector are connected.

[0009] As a further preferred embodiment of this utility model, a force-bearing ring is fixedly installed on the inner side of the passive sealing ring, and a steel ring is fixedly installed on the outer side of the passive sealing ring. A sealing flange is fixedly installed on one side of the steel ring. The passive sealing ring is inserted into the first active sealing ring, and the steel ring is slidably connected in the first sealing groove. The passive sealing ring can be pushed by water flow through the force-bearing ring, so that the greater the water flow, the greater the contact pressure between the passive sealing ring and the second active sealing ring, thereby improving the sealing effect.

[0010] As a further preferred embodiment of this utility model, a second sealing groove is provided on one side of the second active sealing ring. The second sealing groove on one side of the second active sealing ring can cooperate with the passive sealing ring and the force ring to achieve the passive sealing function between the first connector and the second connector after the first connector and the second connector are connected and water is passed through.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] In this invention, a first active sealing ring and a second active sealing ring are respectively provided on the inner sides of the first connector and the second connector, which can realize the sealing function after the first connector and the second connector are connected. A passive sealing ring is installed inside the first active sealing ring, so that the passive sealing ring, together with the inner force ring, is inserted into the second sealing groove when impacted by water flow, thereby improving the connection sealing performance of the first connector and the second connector under the condition of increased flow and pressure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure connection of this utility model;

[0014] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 3 This is a cross-sectional view of the main structure of this utility model;

[0016] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0017] Figure 5 This is a schematic diagram of the passive sealing ring structure of this utility model.

[0018] In the figure: 1. First connector; 2. Second connector; 3. Clip groove; 4. Clip claw; 5. First mounting groove; 6. Guide part; 7. First active sealing ring; 8. Passive sealing ring; 9. Second mounting groove; 10. Second active sealing ring; 11. First sealing groove; 12. Steel ring; 13. Sealing flange; 14. Force ring; 15. Second sealing groove. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figures 1-5 As shown, the present invention provides a fire hose interface sealing and reinforcement structure, including a first connector 1 and a second connector 2. Multiple fastening grooves 3 and fastening claws 4 are fixedly installed on the outer side of the first connector 1. Multiple fastening grooves 3 and fastening claws 4 are also fixedly installed on the outer side of the second connector 2, with the fastening grooves 3 and fastening claws 4 arranged alternately. A first mounting groove 5 is opened on the inner side of the first connector 1. A flow guide 6 is fixedly installed on the inner side of the first connector 1 near the first mounting groove 5. A first active sealing ring 7 is inserted into the first mounting groove 5. A passive sealing ring 8 is movably installed inside the first active sealing ring 7. A second mounting groove 9 is opened on the inner side of the second connector 2. A second active sealing ring 10 is fitted inside the second mounting groove 9.

[0021] like Figures 3-5As shown, the flow guide 6 is arranged in a ring shape along the inner side of the first connector 1, and the longitudinal section of the flow guide 6 is a sloped structure. The slope angle on the side near the first mounting groove 5 is greater than the slope angle on the other side of the flow guide 6. By setting the flow guide 6, the flow channel of the high-pressure water flow near the inner wall of the first connector 1 can be narrowed and guided to impact the force ring 14, thereby pushing the passive sealing ring 8. The inner side of the first active sealing ring 7 is provided with a first sealing groove 11. The opening of the first sealing groove 11 can provide sealing conditions for the connection between the first active sealing ring 7 and the passive sealing ring 8. At the same time, the setting of the first active sealing ring 7 and the second active sealing ring 10 can provide an active sealing effect at the connection point after the first connector 1 and the second connector 2 are connected. The passive sealing ring 8 is fixedly installed on the inner side. A force-bearing ring 14 is provided, and a steel ring 12 is fixedly installed on the outside of the passive sealing ring 8. A sealing flange 13 is fixedly installed on one side of the steel ring 12. The passive sealing ring 8 is inserted into the first active sealing ring 7, and the steel ring 12 is slidably connected in the first sealing groove 11. The passive sealing ring 8 is pushed by the water flow through the force-bearing ring 14, so that the greater the water flow, the greater the contact pressure between the passive sealing ring 8 and the second active sealing ring 10, thereby improving the sealing effect. A second sealing groove 15 is opened on one side of the second active sealing ring 10. The second sealing groove 15 on one side of the second active sealing ring 10 can cooperate with the passive sealing ring 8 and the force-bearing ring 14 to achieve the passive sealing function between the first connector 1 and the second connector 2 after the first connector 1 and the second connector 2 are connected and water is passed through.

[0022] It should be noted that this utility model is a fire hose interface sealing and reinforcement structure. After the first connector 1 and the second connector 2 are connected by the interlocking grooves 3 and the interlocking claws 4 arranged on the outer side, a basic mechanical lock is formed. After connection, the first active sealing ring 7 and the second active sealing ring 10 first provide an initial active seal. They fill the interface gap through their own elastic deformation. When the water flow increases and the water pressure in the pipe rises, when the water flows through the guide part 6, the narrowing channel near the first mounting groove 5 accelerates the water flow and forms a directional impact force acting on the force ring 14 inside the passive sealing ring 8. The steel ring 12 on the outer side of the passive sealing ring 8 slides along the first sealing groove 11 of the first active sealing ring 7. Under the push of the water pressure, the passive sealing ring 8 moves towards the second connector 2, and its sealing flange 13 gradually inserts into the second sealing groove 15 of the second active sealing ring 10 to form a secondary passive seal. At this time, the greater the water pressure, the greater the thrust on the force ring 14, and the contact pressure between the passive sealing ring 8 and the second sealing groove 15 increases synchronously, and the sealing surface fits more tightly.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fire hose joint sealing and reinforcement structure, characterized in that: The device includes a first connector (1) and a second connector (2). The first connector (1) has multiple slots (3) and claws (4) fixedly installed on its outer side. The second connector (2) also has multiple slots (3) and claws (4) fixedly installed on its outer side. The slots (3) and claws (4) are arranged alternately. The first connector (1) has a first mounting groove (5) on its inner side. A guide part (6) is fixedly installed on the inner side of the first connector (1) near the first mounting groove (5). A first active sealing ring (7) is inserted into the first mounting groove (5). A passive sealing ring (8) is also movably installed on the inner side of the first active sealing ring (7). The second connector (2) has a second mounting groove (9) on its inner side. A second active sealing ring (10) is fitted into the inner side of the second mounting groove (9).

2. The fire hose interface sealing and reinforcement structure according to claim 1, characterized in that: The guide section (6) is arranged in a ring shape along the inner side of the first connector (1), and the longitudinal section of the guide section (6) is a slope structure, and the slope angle on the side closer to the first mounting groove (5) is greater than the slope angle on the other side of the guide section (6).

3. The fire hose interface sealing and reinforcement structure according to claim 1, characterized in that: The first active sealing ring (7) has a first sealing groove (11) on its inner side.

4. The fire hose interface sealing and reinforcement structure according to claim 3, characterized in that: A force-bearing ring (14) is fixedly installed inside the passive sealing ring (8), and a steel ring (12) is fixedly installed outside the passive sealing ring (8). A sealing flange (13) is fixedly installed on one side of the steel ring (12). The passive sealing ring (8) is inserted into the first active sealing ring (7), and the steel ring (12) is slidably connected in the first sealing groove (11).

5. The fire hose interface sealing and reinforcement structure according to claim 1, characterized in that: A second sealing groove (15) is provided on one side of the second active sealing ring (10).

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