A long-distance fire fighting quick water supply connecting device

Abstract

The application discloses a fire field long-distance actual combat quick water supply connecting device, and belongs to the technical field of fire fighting, which comprises a fire hose, a connecting head one and a connecting head two are fixedly connected at two ends of the fire hose respectively, a plurality of clamping assemblies are fixedly connected to one side of the connecting head one in a ring structure, a secondary sealing assembly is slidably arranged on the inner wall of the connecting head one, an inflation piston is slidably arranged on the inner wall of the connecting head one, and a release ring is slidably arranged on the inner wall of the connecting head two. The connecting head one and the connecting head two at two ends of the fire hose can be quickly connected through the clamping assemblies, meanwhile, the clamping assemblies can resist external force interference caused by hose dragging and ground friction, effectively prevent the joint from loosening, ensure that the pipeline connection is stable and reliable under the long-distance water supply working condition, the release ring matched with the whole clamping block can be synchronously retracted, the joint can be quickly disassembled, the operation efficiency of hose series laying and disassembly and recovery is greatly improved, and the long-distance complex fire field multi-stage relay water supply scene is adapted.

Description

Technical Field

[0001] This invention relates to the field of fire protection technology, and more specifically, to a rapid water supply connection device for long-distance firefighting operations. Background Technology

[0002] The long-distance rapid water supply connection device for fire scenes is a complete set of water supply connection equipment suitable for rescue scenarios in mountainous areas, large factories, and remote suburban buildings where the distance between the water source and the fire point is large and the terrain is complex. It integrates self-locking quick-connect couplings, multi-specification reducing components, segmented pressurizing connection bases, and multi-layer high-pressure sealing structures. It can quickly lock and connect water hoses, relay pumps, and water distributors with one hand without auxiliary tools, which greatly shortens the time for laying and connecting main pipelines. It has high-pressure anti-leakage and impact-resistant anti-disengagement characteristics. It can be adapted to multi-stage series relay water supply mode, stably ensuring high-flow water supply over long distances of several kilometers. It solves the practical pain points of traditional threaded couplings, such as cumbersome operation, high-pressure leakage, and difficulty in quickly adapting to equipment of different diameters. It is lightweight and portable, and compatible with various fire-fighting equipment, effectively improving the efficiency of water supply construction and the continuity of water supply in long-distance fire scenes.

[0003] When connecting existing fire hoses, the old-fashioned internal coupling requires aligning with the slot and rotating 1 / 4 turn to lock it. This requires repeated alignment and twisting by a single person. Relying solely on the mechanical clamping of the clamp, the clamp is prone to loosening under the torsional force of dragging on the ground, causing interface leakage and affecting the stability of water delivery.

[0004] Therefore, we have made improvements to this and proposed a rapid water supply connection device for long-distance combat in fire situations. Summary of the Invention

[0005] In view of the above-mentioned problems in the existing technology, the purpose of this invention is to provide a long-distance, rapid water supply connection device for fireground operations.

[0006] To solve the above problems, the technical solution adopted by the present invention is as follows: A long-distance, rapid water supply connection device for fire scenes includes a fire hose, with a connector 1 and a connector 2 fixedly connected to both ends of the fire hose. One side of the connector 1 has a ring-shaped structure. The fixed connection has multiple snap-fit ​​components. A secondary sealing component is slidably fitted on the inner wall of the first connector. An inflation piston is slidably fitted on the inner wall of the first connector. A release ring is slidably fitted on the inner wall of the second connector.

[0007] Preferably, a piston cavity is formed on one inner wall of the connector one, and the inner wall of the piston cavity is slidably fitted with the outer wall of the inflation piston. Both the connector one and the connector two have annular sealing grooves at their open ends.

[0008] Preferably, the snap-fit ​​assembly includes a plug-in end, one end of which is fixedly connected to a connector, and the other end of which has a snap-fit ​​block slidably fitted on its inner wall. A spring is fixedly connected between the inner end of the snap-fit ​​block and the inner wall of the plug-in end, and the outer end of the snap-fit ​​block has an inclined surface.

[0009] Preferably, one side of the connector has a ring-shaped structure with multiple snap-fit ​​holes, the inner wall of the snap-fit ​​holes is movably snapped into the insertion end and the outer wall of the snap-fit ​​block, and the side of the connector with snap-fit ​​holes has a ring-shaped structure with multiple abutment joints fixedly connected.

[0010] Preferably, the secondary sealing assembly includes a movable ring, the outer wall of which is slidably fitted with the inner wall of the connector, one end of which is fixedly connected to a plurality of springs, the other end of which is fixedly connected to the inner wall of the connector, and the side of the movable ring connected to the springs is slidably fitted with a plurality of push rods, the middle of which is rotatably connected to the inner wall of the connector via a pin, and the top of which is slidably fitted with an abutment.

[0011] Preferably, the moving ring has two annular airbags fixedly connected to its inner and outer sides in a symmetrical structure. The outer wall of the annular airbag is adapted to the inner wall of the annular sealing groove. A connecting pipe is fixedly connected through the multiple annular airbags. The connecting pipe is fixedly connected through the inner wall of the moving ring. The outer end of the connecting pipe is connected to the inner wall of the piston chamber through a flexible hose.

[0012] Preferably, the inner wall of one side of the inflation piston is symmetrically fitted with two T-shaped rods, one end of which is rotatably connected to the inner wall of the piston cavity. The connection between the T-shaped rod and the inner wall of the piston cavity is... A worm gear is fixedly connected to one end, and a worm is provided on one side of the worm gear for meshing and transmission.

[0013] Preferably, the other end of the worm is rotatably connected to the inner wall of the piston chamber, and a gear is fixedly connected to the outer end of the worm. A gear ring is provided for meshing and transmission between the two gears, and the gear ring is rotatably connected to the inner wall of the connector.

[0014] Preferably, the outer wall of the release ring is provided with a toggle ring groove, and a plurality of springs are fixedly connected between the inner wall of the release ring and the inner wall of the connector.

[0015] Preferably, the inner wall of the release ring is fixedly connected with a plurality of extrusion rods in an annular structure, and the other end of the extrusion rod extends into the snap-fit ​​hole and slides in contact with the inclined surface of the outer end of the snap block.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting up a snap-fit ​​component, the two ends of the fire hose can be quickly connected. At the same time, the snap-fit ​​component can resist external interference caused by hose dragging and ground friction, effectively preventing the joint from loosening and ensuring the pipeline connection is stable and reliable under long-distance water transmission conditions. With the release ring that can retract all the snap-fit ​​blocks at the same time, the joint can be quickly disassembled, which greatly improves the work efficiency of hose series laying and disassembly and recycling. It is suitable for multi-level relay water transmission scenarios in long-distance complex fire scenes in mountainous areas and factories, and solves the practical problems of traditional internal coupling rotating lock, easy leakage and disengagement due to dragging, and long disassembly and assembly time, and stably maintains the continuity of high-pressure water supply in the main line. 2. By setting up a secondary sealing component, when connector one and connector two are mated, the abutment can squeeze one end of the push rod, so that the other end of the push rod can push the secondary sealing component out of connector one and insert into connector two. Then, pushing the toothed ring can drive the inflation piston to move, squeezing the air in the piston chamber into the annular air bladder, so that the air bladder expands and fits the annular sealing groove to form an adaptive high-pressure seal, which greatly improves the anti-leakage capability under long-distance high-pressure water transmission, effectively solves the practical defects of traditional interface sealing being single and prone to pressure leakage, and ensures a continuous, stable and large-flow water supply for long-distance fire lines in mountainous and suburban areas. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the overall structure of a long-distance rapid water supply connection device for fire fighting. Figure 2 is a partial cross-sectional schematic diagram of a long-distance rapid water delivery and connection device for fire fighting. Figure 3 is a cross-sectional schematic diagram of the connector structure of a long-distance rapid water delivery connection device for fire fighting. Figure 4 is a partial cross-sectional schematic diagram of the snap-fit ​​assembly structure of a long-distance rapid water delivery connection device for fireground operations; Figure 5 is a cross-sectional schematic diagram of the connector structure of a long-distance rapid water delivery connection device for fire fighting. Figure 6 is a partial cross-sectional schematic diagram of the secondary sealing component structure of a long-distance rapid water delivery and connection device for fire fighting. Figure 7 is a partial cross-sectional schematic diagram of the inflatable piston structure of a long-distance rapid water delivery and connection device for fire fighting. Figure 8 is a schematic diagram of the release ring structure of a long-distance rapid water transfer connection device for fire scenes.

[0018] In the diagram: 1. Fire hose; 2. Connector 1; 3. Connector 2; 4. Snap-fit ​​assembly; 5. Secondary sealing assembly; 6. Inflating piston; 7. Release ring; 201. Piston chamber; 202. Annular sealing groove; 401. Insertion end; 402. Locking block; 403. Spring 1; 301. Locking hole; 302. Abutment joint; 501. Moving ring; 502. Spring 2; 503. Push rod; 504. Annular airbag; 505. Connecting tube; 506. Flexible hose; 601. T-shaped rod; 602. Worm gear; 603. Worm; 604. Gear; 605. Actuating gear ring; 701. Spring 3; 702. Pressing rod. Detailed Implementation To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0019] Please refer to Figure 1- Figure 8 As shown, the present invention provides a technical solution: a long-distance, practical, rapid water supply connection device for fire scenes, including a fire hose 1, with connector 1 2 and connector 2 3 fixedly connected to both ends of the fire hose 1 respectively. Connector 1 2 has a ring structure on one side with multiple snap-fit ​​components 4 fixedly connected. A secondary sealing component 5 is slidably fitted on the inner wall of connector 1 2. An inflation piston 6 is slidably fitted on the inner wall of connector 1 2. A release ring 7 is slidably fitted on the inner wall of connector 2 3.

[0020] Furthermore, by setting the snap-fit ​​component 4, the connectors 2 and 3 at both ends of the fire hose 1 can be quickly connected. At the same time, the snap-fit ​​component 4 can resist external interference caused by hose dragging and ground friction, effectively preventing the joint from loosening and ensuring the pipeline connection is stable and reliable under long-distance water transmission conditions. With the release ring 7 that can simultaneously retract all the snap-fit ​​blocks 402, the joint can be quickly disassembled, which greatly improves the efficiency of hose series laying and disassembly and recycling. It is suitable for multi-level relay water transmission scenarios in long-distance complex fire scenes in mountainous areas and factories, and solves the practical problems of traditional internal coupling rotating locks being cumbersome, prone to leakage and disengagement when dragged, and time-consuming to disassemble and assemble, thus stably maintaining the continuity of high-pressure water supply in the main line.

[0021] In the preferred embodiment of this technical solution, please refer to Figure 3 As shown, a piston chamber 201 is provided on the inner wall of one side of connector 2. The inner wall of piston chamber 201 is slidably fitted with the outer wall of inflation piston 6. Both connector 2 and connector 3 have annular sealing grooves 202 at their open ends.

[0022] Furthermore, the piston chamber 201 is a sliding sealed cavity of the inflation piston 6, which can store a certain amount of air to provide a stable air source for subsequent inflation of the airbag.

[0023] In the preferred embodiment of this technical solution, please refer to Figure 4 As shown, the snap-fit ​​component 4 includes a plug... The connector 401 is fixedly connected to the connector 2 at one end. The inner wall of the other end of the connector 401 is provided with a locking block 402 that slides in fit. A spring 403 is fixedly connected between the inner end of the locking block 402 and the inner wall of the connector 401. The outer end of the locking block 402 is provided with an inclined surface.

[0024] Furthermore, the locking block 402 can slide telescopically inside the insertion end 401, and the outer inclined surface has a guiding and squeezing effect. It can automatically retract under pressure during docking without manual alignment, and automatically pop out the locking lock after insertion. The spring 403 provides a continuous elastic pushing force for the locking block 402, ensuring that the locking block 402 is stably locked after popping out, and will not retract or loosen due to water vibration or slight dragging, thus ensuring the stability and reliability of the joint locking.

[0025] In the preferred embodiment of this technical solution, please refer to Figure 5 As shown, connector 2 3 has multiple snap-fit ​​holes 301 on one side in an annular structure. The inner wall of the snap-fit ​​hole 301 is movably snapped into the outer wall of the plug end 401 and the snap block 402. Multiple abutment joints 302 are fixedly connected to the side of connector 2 3 with snap-fit ​​holes 301 in an annular structure.

[0026] Furthermore, the abutment joint 302 serves to launch the secondary sealing assembly 5.

[0027] In the preferred embodiment of this technical solution, please refer to Figure 6 As shown, the secondary sealing assembly 5 includes a movable ring 501. The outer wall of the movable ring 501 is slidably fitted with the inner wall of the connector 2. One end of the movable ring 501 is fixedly connected to a plurality of springs 502 in an annular structure. The other end of the springs 502 is fixedly connected to the inner wall of the connector 2. On the side of the movable ring 501 connected to the springs 502, a plurality of push rods 503 are slidably connected in an annular structure. The middle part of the push rods 503 is rotatably connected to the inner wall of the connector 2 through a pin. The top end of the push rods 503 is slidably connected to the abutment 302.

[0028] Furthermore, spring 502 can retract the secondary sealing assembly 5 when the device is not in use, thereby protecting the annular airbag 504.

[0029] In the preferred embodiment of this technical solution, please refer to Figure 6As shown, the moving ring 501 has two annular airbags 504 fixedly connected to its inner and outer sides in a symmetrical structure. The outer wall of the annular airbag 504 is adapted to the inner wall of the annular sealing groove 202. A connecting pipe 505 is fixedly connected through the multiple annular airbags 504. The tube 505 is fixedly connected to the inner wall of the moving ring 501 through it, and the outer end of the connecting tube 505 is connected to the inner wall of the piston chamber 201 through the flexible hose 506.

[0030] Furthermore, the flexible hose 506 connects the piston chamber 201 and the annular airbag 504, and can adapt to the sliding displacement of the moving ring 501, avoiding pipe pulling and breakage, ensuring smooth airflow transmission, and achieving stable inflation and sealing.

[0031] In the preferred embodiment of this technical solution, please refer to Figure 7 As shown, the inner wall of the inflation piston 6 has two T-shaped rods 601 with a symmetrical structure and sliding fit. One end of the T-shaped rod 601 is rotatably connected to the inner wall of the piston cavity 201, and the end of the T-shaped rod 601 connected to the inner wall of the piston cavity 201 is fixedly connected to a worm gear 602. A worm 603 is meshed and driven on one side of the worm gear 602.

[0032] Furthermore, the worm gear 602 and worm 603 have the characteristics of smooth transmission and strong self-locking, which can accurately drive the T-shaped rod 601 to rotate and displace, thereby pushing the inflation piston 6 to smoothly squeeze the air inside the piston chamber 201, ensuring that the inflation pressure is uniform and controllable.

[0033] In the preferred embodiment of this technical solution, please refer to Figure 7 As shown, the other end of the worm 603 is rotatably connected to the inner wall of the piston chamber 201. A gear 604 is fixedly connected to the outer end of the worm 603. A gear ring 605 is provided for meshing and transmission between the two gears 604. The gear ring 605 is rotatably connected to the inner wall of the connector 2.

[0034] Furthermore, adjusting the inflation piston 6 can be accomplished by simply rotating the gear ring 605 by a small angle.

[0035] In the preferred embodiment of this technical solution, please refer to Figure 8 As shown, the outer wall of the release ring 7 is provided with a toggle ring groove, and multiple springs 701 are fixedly connected between the inner wall of the release ring 7 and the inner wall of the connector 3.

[0036] Furthermore, spring 3 701 enables the automatic reset of the release ring 7.

[0037] In the preferred embodiment of this technical solution, please refer to Figure 8As shown, the inner wall of the release ring 7 is fixedly connected with multiple compression rods 702 in an annular structure. The other end of the compression rod 702 extends into the snap-fit ​​hole 301 and slides in contact with the inclined surface of the outer end of the snap block 402.

[0038] Furthermore, the end of the extrusion rod 702 is attached to the inclined surface of the locking block 402, and the inclined surface is used to extrude during the sliding process. The pressure principle synchronously pushes all the card blocks 402 back into the insertion end 401.

[0039] Working principle: During long-distance water supply laying operations at a fire scene, workers axially insert the connector 2 of the previous fire hose 1 into the connector 3 of the next fire hose 1. During the insertion process, multiple sets of insertion ends 401 arranged in a ring at the end of connector 2 are inserted into the locking holes 301 of connector 3. The outer inclined surface of the locking block 402 is squeezed by the hole wall, overcoming the elastic force of spring 403 and automatically retracting, smoothly entering the depth of the locking hole 301. When the locking block 402 is aligned with the locking groove, spring 403 rebounds and pushes the locking block 402 out, realizing multi-point mechanical self-locking of the joint, completing the rapid docking and fixing, which can resist external forces such as water supply vibration, ground dragging, and water flow impact, and prevent the joint from loosening or disengaging.

[0040] While the connector is plugged in and locked, the annular abutment 302 on the end face of connector 2 3 simultaneously presses the end of the push rod 503 inside connector 1 2. The push rod 503 rotates around the central pin, using the lever principle to push the moving ring 501 to overcome the tension of spring 2 502 and slide outward, pushing out the secondary sealing assembly 5 housed inside connector 1 2 as a whole. This allows the moving ring 501 and the inner and outer double-layer annular airbags 504 to be precisely embedded in the mating gap of the two connectors, completing the alignment and arrangement of the sealing structure.

[0041] After docking, the operator inserts their finger into the actuating ring 605 and actuates it. Through the meshing of gear 604, the worm gears 603 on both sides rotate synchronously. In conjunction with the worm wheel 602, the T-shaped rod 601 rotates, smoothly pushing the inflation piston 6 to slide along the inner wall of the piston cavity 201, compressing the sealed air inside the piston cavity 201. The compressed air is synchronously delivered to the interior of each set of annular airbags 504 through hoses 506 and connecting pipes 505, causing the annular airbags 504 to expand evenly and fit tightly into the annular sealing grooves 202 of connector 1 and connector 2, forming an inner and outer double-layer adaptive high-pressure sealing structure to stabilize the main water supply pressure and flow.

[0042] When firefighting operations are completed and the hose needs to be withdrawn, the worker moves the release ring 7 on the outer wall of connector 23. During the sliding process of release ring 7, multiple sets of compression rods 702 move synchronously. The ends of compression rods 702 press against the inclined surface of locking blocks 402, causing the locking blocks 402 to retract synchronously into the insertion end 401, thus releasing the hose. In the fully engaged and locked state, the two connectors can be directly axially separated to quickly disassemble the hose. After disassembly, spring 3 701 pulls the release ring 7 to automatically reset, facilitating the next operation. At the same time, spring 2 502 pulls the moving ring 501 to reset, retracting the annular airbag 504 to prevent it from being exposed and worn, thus achieving automatic structural protection.

[0043] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0044] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A rapid water supply connection device for long-distance firefighting operations, characterized in that, The fire hose (1) is fixedly connected to two ends of the fire hose (1) with a first connector (2) and a second connector (3) respectively. The first connector (2) has a ring structure on one side with multiple snap-fit ​​components (4). The inner wall of the first connector (2) is slidably fitted with a secondary sealing component (5). The inner wall of the first connector (2) is slidably fitted with an air-filling piston (6). The inner wall of the second connector (3) is slidably fitted with a release ring (7).

2. The long-distance rapid water supply connection device for fireground operations according to claim 1, characterized in that, A piston chamber (201) is provided on the inner wall of one side of the connector (2). The inner wall of the piston chamber (201) is slidably fitted with the outer wall of the inflation piston (6). Both the opening ends of the connector (2) and the connector (3) are provided with annular sealing grooves (202).

3. The long-distance rapid water supply connection device for fireground operations according to claim 2, characterized in that, The snap-fit ​​assembly (4) includes a plug-in end (401), one end of which is fixedly connected to a connector (2), and a snap-fit ​​block (402) is slidably fitted on the inner wall of the other end of the plug-in end (401). A spring (403) is fixedly connected between the inner end of the snap-fit ​​block (402) and the inner wall of the plug-in end (401), and an inclined surface is provided on the outer end of the snap-fit ​​block (402).

4. The long-distance rapid water supply connection device for fireground operations according to claim 3, characterized in that, The connector 2 (3) has a ring structure with multiple snap-fit ​​holes (301) on one side. The inner wall of the snap-fit ​​hole (301) is movably snapped into the outer wall of the plug end (401) and the snap-fit ​​block (402). The connector 2 (3) has a ring structure with multiple abutment joints (302) fixedly connected on one side with the snap-fit ​​hole (301).

5. A rapid water supply connection device for long-distance firefighting operations according to claim 4, characterized in that, The secondary sealing assembly (5) includes a movable ring (501), the outer wall of which is slidably fitted with the inner wall of the connector (2), and one end of the movable ring (501) has an annular structure. Multiple springs (502) are fixedly connected. The other end of the springs (502) is fixedly connected to the inner wall of the connector (2). The movable ring (501) is connected to the side of the springs (502) in a ring structure and has multiple push rods (503) in sliding contact. The middle part of the push rod (503) is rotatably connected to the inner wall of the connector (2) through a pin. The top of the push rod (503) is in sliding contact with the abutment (302).

6. A rapid water supply connection device for long-distance firefighting operations according to claim 5, characterized in that, The moving ring (501) has two annular airbags (504) fixedly connected to its inner and outer sides in a symmetrical structure. The outer wall of the annular airbag (504) is adapted to the inner wall of the annular sealing groove (202). A connecting pipe (505) is fixedly connected through the multiple annular airbags (504). The connecting pipe (505) is fixedly connected through the inner wall of the moving ring (501). The outer end of the connecting pipe (505) is connected to the inner wall of the piston chamber (201) through a flexible hose (506).

7. A long-distance, rapid water supply connection device for fireground operations according to claim 2, characterized in that, The inner wall of the inflatable piston (6) is symmetrically fitted with two T-shaped rods (601). One end of the T-shaped rod (601) is rotatably connected to the inner wall of the piston cavity (201). The end of the T-shaped rod (601) connected to the inner wall of the piston cavity (201) is fixedly connected to a worm gear (602). A worm (603) is meshed and driven on one side of the worm gear (602).

8. A long-distance, rapid water supply connection device for fireground operations according to claim 7, characterized in that, The other end of the worm (603) is rotatably connected to the inner wall of the piston chamber (201). A gear (604) is fixedly connected to the outer end of the worm (603). A gear ring (605) is provided between the two gears (604) for meshing transmission. The gear ring (605) is rotatably connected to the inner wall of the connector (2).

9. A long-distance, rapid water supply connection device for fireground operations according to claim 1, characterized in that, The outer wall of the release ring (7) is provided with a toggle ring groove, and multiple springs (701) are fixedly connected between the inner wall of the release ring (7) and the inner wall of the connector (3).

10. A rapid water supply connection device for long-distance firefighting operations according to claim 4, characterized in that, The inner wall of the release ring (7) is fixedly connected with a plurality of extrusion rods (702) in an annular structure. The other end of the extrusion rod (702) extends into the snap-fit ​​hole (301) and slides in contact with the outer inclined surface of the snap block (402).

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