Fire hydrant for fire hose

Abstract

The utility model provides a kind of fire interface for fire hose, including main joint for being connected with fire hose, sub joint for being connected with main joint, further include at least two main openings on the main joint, at least two sub openings on the sub joint and corresponding with main joint, clamping post being located in each main opening and being set on the main joint, flip plate being located in each sub opening and being reversibly set on the sub joint with one end, matching clamping hole being set on the other end of each flip plate, sealing element being set between the main joint and the sub joint, positioning block is set on the main joint, positioning slot for gap cooperation with positioning block is set on the sub joint, can avoid the operation that threaded alignment and rotation multiple circles can be realized, can further improve the connection speed between two interfaces.

Description

Technical Field

[0001] This utility model relates to the field of fire protection interface technology, specifically to a fire protection interface for fire hoses. Background Technology

[0002] Fire hoses are flexible tubes used to transport high-pressure water or flame-retardant liquids such as foam. Traditional fire hoses have a rubber inner lining and an outer layer covered with woven linen. Both ends of a fire hose have metal connectors, which can be used to connect another hose to extend the distance or to a nozzle to increase the liquid spray pressure. Fire hoses are usually connected using fire hose couplings.

[0003] Among fire-fighting interfaces, there are threaded interfaces, specifically threaded fire-fighting interfaces. Threaded fire-fighting interfaces are components that achieve quick and sealed connections through the cooperation of internal and external threads, and are suitable for connecting equipment such as fire hoses and fire hydrants.

[0004] However, threaded fire hose couplings require aligning the threaded surfaces of the two couplings and rotating them multiple times to secure the connection, making it difficult to further improve the connection speed between the two couplings. Utility Model Content

[0005] The purpose of this utility model is to provide a fire hose coupling to address the defects and shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a fire hose connector, comprising a main connector for connecting to a fire hose, a secondary connector for connecting to the main connector, and further comprising at least two main openings on the main connector, at least two secondary openings on the secondary connector corresponding to the main connector, a locking post disposed on the main connector and located within each main opening, a flip plate disposed on the secondary connector and located within each secondary opening, a fitting hole disposed at the other end of each flip plate for engaging with the locking post after the flip plate is flipped to a predetermined position, and a sealing member disposed between the main connector and the secondary connector for sealing the gap between the main connector and the secondary connector after the fitting hole engages with the locking post;

[0007] The main connector is provided with a positioning block, and the auxiliary connector is provided with a positioning groove for clearance fitting with the positioning block.

[0008] A further improvement is that the fitting hole includes a fitting hole located at the other end of the flip plate and in clearance with the fitting post for engaging with the fitting post, and a fitting hole located at the other end of the flip plate and connected to the fitting hole for compressing the fitting post to cause plastic deformation of the flip plate when the flip plate is flipped to a predetermined position, so that the fitting post enters the fitting hole to form a fitting.

[0009] A further improvement is that the mating hole is a tapered opening, with the upper end of the mating hole connected to the locking hole, and the lower end of the mating hole located on the lower end face of the flip plate.

[0010] A further improvement is that a chamfered surface is provided on the flip plate between the upper end of the mating hole and the lower end of the engaging hole.

[0011] A further improvement is that a quick-release mechanism is provided between each of the flip plates and the main connector.

[0012] A further improvement is that the quick-release mechanism includes a sliding sleeve slidably disposed on the main connector, a quick-release opening at the other end of the flip plate, a disassembly ring with one end disposed on the sliding sleeve and the other end located in the quick-release opening, and an inclined facet opening at the other end of the flip plate and connected to the quick-release opening.

[0013] A further improvement is that a limiting groove is provided on the main connector, and a limiting block is provided on the sliding sleeve, with the limiting block slidably disposed within the limiting groove.

[0014] A further improvement is that the sealing element is a rubber sheet or a rubber ring.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are as follows: When it is necessary to connect the main connector and the auxiliary connector, first insert the positioning block into the positioning groove. At this time, the positions of the main opening and the auxiliary opening are corresponding. Then, control each flipping plate to flip to the predetermined position in the auxiliary opening, so that the fitting hole and the fitting post engage and cooperate. The gap between the main connector and the auxiliary connector is sealed by the sealing element. This can avoid the operation of threaded alignment and multiple rotations, and can further improve the connection speed between the two interfaces.

[0016] Further benefits: The tapered opening allows the flip plate to gradually compress the locking post as it flips, causing plastic deformation and gradually enlarging the mating hole, making it easier for the locking post to enter the locking hole.

[0017] Further benefits: The chamfered surface allows the locking post to slide more easily into the locking hole when the upper end of the locking post is pressed against the mating hole, and reduces friction between the sharp parts and the locking post, thus improving the smoothness of the locking post entering the locking hole.

[0018] Further benefits: When it is necessary to disconnect the main connector and the auxiliary connector, if the auxiliary connector is connected to the fixed end of the water valve, simply hold the sliding sleeve with your hand and pull it away from the auxiliary connector, thereby causing the disassembly ring to contact the inclined hole. As the sliding sleeve is pulled, the other end of the disassembly ring pushes the flip plate upward until the locking hole and the locking post are disengaged. If the auxiliary connector is connected to the nozzle, hold the sliding sleeve and the auxiliary connector with both hands respectively and pull them in opposite directions until the locking hole and the locking post are disengaged.

[0019] Further benefits: The design of the limiting groove and limiting block prevents the sliding sleeve from being excessively pulled and slipping off the main connector. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a front sectional view of the present invention;

[0022] Figure 2 This is a side view of the auxiliary connector, auxiliary opening, flip plate, seal, and positioning groove in this utility model;

[0023] Figure 3 This is a side view of the main connector, main opening, locking post, sealing element, and positioning block in this utility model;

[0024] Figure 4 It corresponds Figure 1 Enlarged view of part A;

[0025] Figure 5 It corresponds Figure 1 Enlarged view of part B.

[0026] Explanation of reference numerals in the attached drawings: Main connector 1, Sub-connector 2, Main opening 3, Sub-opening 4, Engaging post 5, Flip plate 6, Seal 8, Positioning block 9, Positioning groove 10, Engaging hole 11, Mating hole 12, Chamfered surface 13, Sliding sleeve 14, Quick release opening 15, Removal ring 16, Inclined hole 17, Limiting groove 18, Limiting block 19. Detailed Implementation

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0028] See Figures 1 to 5As shown, the technical solution adopted in this specific embodiment is: a fire hose connector, including a main connector 1 for connecting to a fire hose, a secondary connector 2 for connecting to the main connector 1, and at least two main openings 3 opened on the main connector 1, at least two secondary openings 4 opened on the secondary connector 2 and corresponding to the main connector 1, a locking post 5 disposed on the main connector 1 and located in each of the main openings 3, a flip plate 6 with one end rotatable disposed on the secondary connector 2 and located in each of the secondary openings 4, a fitting hole opened on the other end of each of the flip plates 6 for engaging with the locking post 5 after the flip plate 6 is flipped to a predetermined position, and a sealing member 8 disposed between the main connector 1 and the secondary connector 2 for sealing the gap between the main connector 1 and the secondary connector 2 after the fitting hole engages with the locking post 5;

[0029] The main connector 1 is provided with a positioning block 9, and the auxiliary connector 2 is provided with a positioning groove 10 for clearance fitting with the positioning block 9.

[0030] When there are two secondary openings 4 and two main openings 3, they are arranged symmetrically on the secondary connector 2 and the main connector 1, either vertically, horizontally, or at an angle. When there are three or more, they are arranged equidistantly in a ring on the secondary connector 2 and the main connector 1. The two ends of the locking post 5 are fixed to the main connector 1 by bonding or welding, located within the main opening 3. One end of the flip plate 6 is hinged to the secondary connector 2 by a traditional hinge method such as a pivot or pin, located within the secondary opening 4. The predetermined flip position of the flip plate 6 is the position where the locking post 5 is locked within the fitting opening. The number of positioning blocks 9 and positioning grooves 10 can be one or more. The positioning block 9 is set on the main connector 1 by bonding, welding, or as an integral part. The positioning groove 10 is integrally set with the secondary connector 2. The shape of the positioning block 9 and the positioning groove 10 is not specifically limited, as long as it meets the positioning requirements.

[0031] The fitting holes include a fitting hole 11 located at the other end of the flip plate 6 and in clearance fit with the fitting post 5 for engaging with the fitting post 5, and a fitting hole 12 located at the other end of the flip plate 6 and connected to the fitting hole 11 for engaging with the fitting post 5 when the flip plate 6 is flipped to a predetermined position, causing the flip plate 6 to undergo plastic deformation by pressing against the fitting post 5, so that the fitting post 5 enters the fitting hole 11 to form a fitting.

[0032] The mating hole 12 is a tapered opening. The upper end of the mating hole 12 is connected to the locking hole 11, and the lower end of the mating hole 12 is opened on the lower end face of the flip plate 6.

[0033] A chamfered surface 13 is provided on the flip plate 6 between the upper end of the mating hole 12 and the lower end of the engaging hole 11.

[0034] A quick-release mechanism is provided between each of the flip plates 6 and the main connector 1.

[0035] The quick-release mechanism includes a sliding sleeve 14 slidably mounted on the main connector 1, a quick-release opening 15 at the other end of the flip plate 6, a disassembly ring 16 with one end mounted on the sliding sleeve 14 and the other end located within the quick-release opening 15, and an inclined hole 17 at the other end of the flip plate 6 communicating with the quick-release opening 15. The other end of the disassembly ring 16 is located within the quick-release opening 15 of each flip plate 6. The sliding sleeve 14 can be laterally slidably mounted on the main connector 1 by fitting it in place. When the quick-release mechanism is not provided, the other end of the flip plate 6 can be gripped by hand to disengage the locking hole from the locking post 5.

[0036] The main connector 1 has a limiting groove 18, and the sliding sleeve 14 has a limiting block 19, which is slidably disposed within the limiting groove 18. The limiting groove 18 can be a number of transverse grooves corresponding to the number of flip plates 6, and the number of limiting blocks 19 corresponds to the number of limiting grooves 18. After the limiting blocks 19 are disposed within the limiting groove 18, the outer peripheral surface of the limiting blocks 19 is flush with the outer peripheral surface of the main connector 1. During assembly, the limiting blocks 19 are first placed in the limiting groove 18, glue is applied to the limiting blocks 19, and then the sliding sleeve 14 is pushed into the main connector 1. After the glue dries, the sliding sleeve 14 and the limiting blocks 19 are fixedly connected, or the limiting blocks 19 and the sliding sleeve 14 are connected by ultrasonic welding, or bolts are used to connect the limiting blocks 19 and the sliding sleeve 14. The distance between the limiting groove 18 and the limiting block 19 is the distance that allows the sliding sleeve 14 to drive the disassembly ring 16 to lift the flip plate 6, so that the fitting hole and the fitting post 5 are separated.

[0037] The sealing element 8 is a rubber sheet or a rubber ring. The sealing element 8 can be provided on the main connector 1 or the auxiliary connector 2, or both connectors.

[0038] The working principle of this utility model is as follows: When it is necessary to connect the main connector 1 and the auxiliary connector 2, the positioning block 9 is first inserted into the positioning groove 10. At this time, the positions of the main opening 3 and the auxiliary opening 4 are corresponding. Then, each flipping plate 6 is controlled to flip to the predetermined position in the auxiliary opening 4, so that the fitting hole and the fitting post 5 are engaged and cooperated. The gap between the main connector 1 and the auxiliary connector 2 is sealed by the sealing member 8. This can avoid the operation of threaded alignment and multiple rotations, and can further improve the connection speed between the two interfaces.

[0039] The tapered opening can be set so that as the flipping plate 6 flips, the flipping plate 6 and the locking column 5 are gradually squeezed and plastically deformed, making the mating hole 12 gradually enlarged, making it easier for the locking column 5 to enter the locking hole 11.

[0040] The chamfered surface 13 allows the locking post 5 to slide more easily into the locking hole 11 when the upper end of the locking post 5 is pressed against the mating hole 12, and reduces the friction between the sharp part and the locking post 5, thus improving the smoothness of the locking post 5 entering the locking hole 11.

[0041] When it is necessary to disconnect the connection between the main connector 1 and the auxiliary connector 2, if the auxiliary connector 2 is connected to the fixed end of the water valve, simply hold the sliding sleeve 14 with your hand and pull it away from the auxiliary connector 2, thereby causing the disassembly ring 16 to contact the inclined hole 17. As the sliding sleeve 14 is pulled, the other end of the disassembly ring 16 pushes the flip plate 6 upward until the locking hole and the locking post 5 are disengaged. If the auxiliary connector 2 is connected to the nozzle, hold the sliding sleeve 14 and the auxiliary connector 2 with both hands respectively, and pull them in opposite directions until the locking hole and the locking post 5 are disengaged.

[0042] The limiting groove 18 and the limiting block 19 are designed to prevent the sliding sleeve 14 from being excessively pulled and slipping off the main connector 1.

[0043] This utility model aims to protect the product's structure. The model numbers of the individual components are not protected by this utility model and are common knowledge. Any component on the market that can achieve the functions described above can be used as a fire hose coupling. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.

[0044] 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 provided 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 protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A fire hose coupling, comprising a main connector for connecting to a fire hose and a secondary connector for connecting to the main connector, characterized in that: It also includes at least two main openings on the main connector, at least two secondary openings on the secondary connector and corresponding to the main connector, a locking post disposed on the main connector and located in each main opening, a flip plate disposed on the secondary connector and located in each secondary opening, a fitting hole disposed at the other end of each flip plate for engaging with the locking post after the flip plate is flipped to a predetermined position, and a sealing element disposed between the main connector and the secondary connector for sealing the gap between the main connector and the secondary connector after the fitting hole engages with the locking post; The main connector is provided with a positioning block, and the auxiliary connector is provided with a positioning groove for clearance fitting with the positioning block.

2. A fire hose coupling according to claim 1, characterized in that: The fitting hole includes a fitting hole located at the other end of the flip plate and in clearance with the fitting post for engaging with the fitting post, and a fitting hole located at the other end of the flip plate and connected to the fitting hole for engaging with the fitting post when the flip plate is flipped to a predetermined position, causing the flip plate to undergo plastic deformation by pressing against the fitting post, so that the fitting post enters the fitting hole to form a fitting.

3. A fire hose coupling according to claim 2, characterized in that: The mating hole is a tapered opening, with its upper end connected to the locking hole and its lower end located on the lower end face of the flip plate.

4. A fire hose coupling according to claim 3, characterized in that: The flip plate has a chamfered surface between the upper end of the mating hole and the lower end of the engaging hole.

5. A fire hose coupling according to claim 1, characterized in that: Each of the flip plates is provided with a quick-release mechanism between itself and the main connector.

6. A fire hose coupling according to claim 5, characterized in that: The quick-release mechanism includes a sliding sleeve slidably disposed on the main connector, a quick-release opening at the other end of the flip plate, a disassembly ring with one end disposed on the sliding sleeve and the other end located in the quick-release opening, and an inclined facet opening at the other end of the flip plate and connected to the quick-release opening.

7. A fire hose coupling according to claim 6, characterized in that: The main connector has a limiting groove, and the sliding sleeve is provided with a limiting block, which can be slidably disposed in the limiting groove.

8. A fire hose coupling according to claim 1, characterized in that: The sealing element is a rubber sheet or a rubber ring.

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