Fire-fighting pump connector with automatic locking function

Abstract

The utility model relates to the field of fire pump, specifically is a kind of fire pump connector with automatic locking function, including the pump connector being connected with fire pump, the pipe joint being connected with fire water pipe, the other end of the pump connector is sleeved in the end of pipe joint, sealing element is arranged between the pump connector and pipe joint, locking unit is connected with pipe joint and is arranged on the pump connector;The fire pump connector with automatic locking function of the utility model can quickly complete the connection and locking of connector, without rotating multiple times as in conventional manner to ensure complete locking, save operation time, and support one-handed operation, even in the case of wearing heavy protective gloves also can easily complete, improve operation flexibility and convenience, while realizing double insurance locking, even under strong vibration or water pressure impact, can also guarantee connection stability, prevent accidental drop, not only improve safety, also overcome the defect that traditional buckle type connector is easily mistaken to loosen.

Description

Technical Field

[0001] This utility model relates to the field of fire pumps, specifically a fire pump connector with an automatic locking function. Background Technology

[0002] In firefighting operations, a quick and reliable connection between fire pumps and fire hoses is crucial for ensuring firefighting efficiency and personnel safety. Currently, most common connections between fire pumps and hoses use manual screw-on or snap-fit ​​joints. However, these traditional structures have many shortcomings in practical applications.

[0003] On the one hand, manually tightened couplings require operators to rotate them multiple times to ensure complete locking, which is cumbersome and time-consuming, especially in emergencies where rapid response is difficult. On the other hand, while snap-fit ​​couplings offer improved connection speed, their locking structure has poor stability and is prone to accidental detachment under high-pressure water flow or equipment vibration, posing a significant safety hazard. Furthermore, most of these couplings require two-handed operation, which is inconvenient for firefighters wearing heavy protective gear and affects the efficiency of on-site emergency response. More importantly, traditional couplings lack effective anti-detachment protection mechanisms; accidental activation of the unlocking structure can lead to connection interruption, seriously threatening the continuity of the water supply system and the smooth progress of firefighting operations. Therefore, overcoming these technical problems and defects is a key issue that needs to be addressed. Utility Model Content

[0004] The purpose of this invention is to overcome the defects described in the background art, thereby realizing a fire pump connector with an automatic locking function. This connector can quickly complete the connection and locking of the connector without the need for multiple rotations to ensure complete locking as in the traditional method, saving operation time. Moreover, it supports one-handed operation and can be easily completed even when wearing heavy protective gloves, improving operational flexibility and convenience. At the same time, it achieves double safety locking, ensuring stable connection even under strong vibration or water pressure impact, preventing accidental detachment. This not only improves safety but also overcomes the defect of traditional snap-fit ​​connectors that are prone to accidental loosening.

[0005] To achieve the above-mentioned objectives, the technical solution of this utility model is: a fire pump connector with an automatic locking function, comprising a pump connector connected to a fire pump and a pipe connector connected to a fire water pipe, wherein the other end of the pump connector is sleeved on the end of the pipe connector. A sealing element is provided between the pump connector and the pipe connector. A locking unit connected to the pipe connector is provided on the pump connector.

[0006] In the above-mentioned fire pump connector with automatic locking function, a flange plate is fixedly installed on the outer ring of the end of the pump connector, and a first sealing ring that abuts against the fire pump is provided on the side of the flange plate.

[0007] In the above-mentioned fire pump connector with automatic locking function, the inner ring of the pump connector is coaxially provided with a connecting groove, and the end of the pipe connector is inserted into the connecting groove. The diameter of the connecting groove is the same as the corresponding outer ring diameter of the pipe connector.

[0008] In the above-mentioned fire pump connector with automatic locking function, the outer ring of the end of the pipe connector facing away from the pump connector is provided with a fixing part that cooperates with the fire water pipe. The outer ring of the pipe connector is fixedly provided with a limit ring, and a protective groove is opened between the side of the limit ring facing the fixing part and the outer ring of the pipe connector.

[0009] In the above-mentioned fire pump connector with automatic locking function, the sealing element includes a second sealing ring disposed between the end of the pipe connector and the side wall of the connecting groove, and a third sealing ring disposed on the pipe connector between the end of the pump connector and the limiting ring.

[0010] The outer ring of the third sealing ring has a wedge-shaped structure, and the outer ring diameter of the third sealing ring gradually decreases towards the limiting ring.

[0011] In the above-mentioned fire pump connector with automatic locking function, the locking unit includes a connecting ring that is horizontally fixed on the side of the limiting ring facing the pump connector. The cross-section of the connecting ring is L-shaped. The pipe connector is fitted with a locking ring. The locking ring has a connecting cavity. The connecting ring slides horizontally along its axial direction inside the connecting cavity.

[0012] A compression ring is fixedly provided on the locking ring between the connecting ring and the outer ring of the pipe joint, and the inner ring of the compression ring is adapted to the outer ring of the third sealing ring.

[0013] In the above-mentioned fire pump connector with automatic locking function, at least one fixing pin is fixedly provided on the outer ring of the pump connector, and a sliding groove adapted to the fixing pin is provided on the inner ring of the locking ring. The sliding groove is a spiral structure that opens inward from the end of the locking ring. A locking groove communicating with the tail end of the sliding groove is provided on the inner ring of the locking ring, and the locking groove is adapted to the fixing pin.

[0014] The side of the locking groove is provided with a limiting groove along the axial direction of the locking ring. A pin is slidably provided inside the limiting groove. The end of the pin facing the sliding groove is inclined. A spring is provided between the end of the pin and the inner end of the limiting groove. A slot adapted to the pin is provided on the upper part of the fixing pin.

[0015] In the above-mentioned fire pump connector with automatic locking function, a drive ring is sleeved on the outer side of the locking ring, and the side of the drive ring is fixedly connected to the top of the pin.

[0016] Compared with the prior art, the fire pump connector with automatic locking function of this utility model has at least the following beneficial effects:

[0017] 1. The fire pump connector with automatic locking function of this utility model, by setting a linkage locking unit composed of a connecting ring, a locking ring, a fixing pin, a sliding groove and a locking groove between the pump connector and the pipe connector, allows the locking action to be automatically completed by rotating the drive ring after the pipe connector is inserted into place. Unlike traditional connectors that require manual tightening or additional tools, this structure achieves a one-way automatic locking function, which greatly improves connection efficiency and on-site emergency response capability. At the same time, the connection and locking of the connector can be quickly completed by rotating the drive ring, without the need for multiple rotations to ensure complete locking as in the traditional method, saving operation time. Moreover, it supports one-handed operation, which can be easily completed even when wearing heavy protective gloves, improving operational flexibility and convenience.

[0018] 2. The fire pump connector with automatic locking function of this utility model has a second sealing ring and a third sealing ring with a wedge-shaped outer ring located between the end of the pipe connector and the connecting groove of the pump connector. The latter, together with the limiting ring, further enhances the sealing performance. The special wedge-shaped structure of the third sealing ring can adapt to the deformation of the squeezing ring during the locking process, thereby improving the sealing tightness and effectively preventing high-pressure water leakage.

[0019] 3. The fire pump connector with automatic locking function of this utility model has a combination structure of spiral groove and locking groove in the locking ring, and is equipped with a pin assembly with spring return function to form a mechanical locking protection mechanism. When the fixing pin is located in the locking groove along the groove, the pin springs into the slot to achieve double insurance locking. Even under strong vibration or water pressure impact, the connection can be guaranteed to be stable and prevent accidental detachment. This not only improves safety, but also overcomes the defect of traditional snap-fit ​​connectors that are easy to accidentally loosen. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the fire pump connector with automatic locking function of this utility model;

[0021] Figure 2 This is a full sectional structural diagram of the fire pump connector with automatic locking function of this utility model;

[0022] Figure 3 This is a fully exploded cross-sectional view of the fire pump connector with automatic locking function of this utility model.

[0023] Figure 4 This is a schematic diagram of the slide groove position of the fire pump connector with automatic locking function according to this utility model;

[0024] Figure 5 This is a schematic diagram of the spring position of the fire pump connector with automatic locking function according to this utility model.

[0025] In the diagram: 1. Pump connector; 2. Pipe connector;

[0026] 3. Sealing element; 31. Second sealing ring; 32. Third sealing ring;

[0027] 4. Locking unit; 41. Connecting ring; 42. Locking ring; 43. Connecting cavity; 44. Compression ring; 45. Fixing pin; 46. Slide groove; 47. Locking groove; 48. Limiting groove; 49. Pin; 50. Spring; 51. Slot; 52. Drive ring;

[0028] 5. Flange plate; 6. First sealing ring; 7. Connecting groove; 8. Fixing part; 9. Limiting ring; 10. Protective groove. Detailed Implementation

[0029] The fire pump connector with automatic locking function of this utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] See Figures 1-5 The fire pump connector with automatic locking function in this embodiment can quickly complete the connection and locking of the connector, eliminating the need for multiple rotations to ensure complete locking as in traditional methods, saving operation time. It also supports one-handed operation, allowing for easy operation even while wearing heavy protective gloves, improving operational flexibility and convenience. Simultaneously, it achieves double-locking safety, ensuring stable connection even under strong vibration or water pressure impact, preventing accidental detachment. This not only improves safety but also overcomes the shortcomings of traditional snap-fit ​​connectors that are prone to accidental loosening. In this embodiment, it mainly includes a pump connector 1 connected to the fire pump and a pipe connector 2 connected to the fire water pipe. A flange plate 5 is fixedly installed on the outer ring of the end of the pump connector 1, and a first sealing ring 6 is provided on the side of the flange plate 5 to abut against the fire pump. The pump connector 1 is fixed to the fire pump by the flange plate 5 and sealed by the first sealing ring 6.

[0032] The other end of the pump connector 1 is fitted onto the end of the pipe connector 2. A connecting groove 7 is coaxially formed on the inner ring of the pump connector 1, and the end of the pipe connector 2 is inserted into the connecting groove 7. The diameter of the connecting groove 7 is the same as the diameter of the corresponding outer ring of the pipe connector 2. Inserting the end of the pipe connector 2 into the connecting groove 7 inside the pump connector 1, and using the connecting groove 7 and the pipe connector 2 with the same diameter, prevents problems such as shaking, swaying, and leakage later on. A fixing part 8 is provided on the outer ring of the end of the pipe connector 2 facing away from the pump connector 1, which cooperates with the fire water pipe. A limiting ring 9 is fixedly provided on the outer ring of the pipe connector 2, and a protective groove 10 is formed between the side of the limiting ring 9 facing the fixing part 8 and the outer ring of the pipe connector 2.

[0033] The fire hose is fitted over the other end of the pipe fitting 2, and the end is inserted into the protective groove 10, thereby protecting the end of the fire hose through the protective groove 10. The fire hose is then fixed to the limiting ring 9 with a clamp.

[0034] To prevent leakage of high-pressure water. See also Figures 1-3 In this embodiment, a sealing element 3 is provided between the pump connector 1 and the pipe connector 2. The sealing element 3 includes a second sealing ring 31 disposed between the end of the pipe connector 2 and the side wall of the connecting groove 7. The second sealing ring 31 achieves a seal between the end of the pipe connector 2 and the inner ring of the pump connector 1. A third sealing ring 32 is provided on the pipe connector 2 between the end of the pump connector 1 and the limiting ring 9. The outer ring portion of the third sealing ring 32 has a wedge-shaped structure, and the outer ring diameter of the third sealing ring 32 gradually decreases towards the limiting ring 9.

[0035] To achieve double-safety locking, in this embodiment, see... Figures 1-5 The pump connector 1 is provided with a locking unit 4 connected to the pipe connector 2. The locking unit 4 includes a connecting ring 41 horizontally fixed on the side of the limiting ring 9 facing the pump connector 1. The connecting ring 41 has an L-shaped cross-section. A locking ring 42 is fitted on the pipe connector 2. The locking ring 42 has a connecting cavity 43. The connecting ring 41 slides horizontally along its axis inside the connecting cavity 43. A compression ring 44 is fixedly provided on the locking ring 42 between the connecting ring 41 and the outer ring of the pipe connector 2. The inner ring of the compression ring 44 is adapted to the outer ring of the third sealing ring 32. During the process of inserting the pipe connector 2 into the pump connector 1, the limiting ring 9 pushes the locking ring 42 to move on the pump connector 1. During this process, the compression ring 44 abuts against the third sealing ring 32.

[0036] At least one fixing pin 45 is fixedly provided on the outer ring of the pump connector 1. A sliding groove 46 adapted to the fixing pin 45 is provided on the inner ring of the locking ring 42. The sliding groove 46 is a spiral structure extending inward from the end of the locking ring 42. A locking groove 47 communicating with the tail end of the sliding groove 46 is provided on the inner ring of the locking ring 42. The locking groove 47 is adapted to the fixing pin 45. A limiting groove 48 is provided on the side of the locking groove 47 along the axial direction of the locking ring 42. A pin 49 is slidably disposed inside the limiting groove 48. The end of the pin 49 facing the sliding groove 46 is inclined. A spring 50 is provided between the end of the pin 49 and the inner end of the limiting groove 48. A slot 51 adapted to the pin 49 is provided on the upper part of the fixing pin 45. A driving ring 52 is sleeved on the outer side of the locking ring 42. The side of the driving ring 52 is fixedly connected to the top end of the pin 49. During the movement of the limiting ring 9, under the action of the fixing pin 45, the side wall of the slide groove 46 always abuts against the fixing pin 45, and the locking ring 42 rotates along its axis. When the pipe joint 2 moves to its limit position within the pump joint 1, the locking ring 42 is rotated by one hand to make it rotate along the fixing pin 45 through the slide groove 46 until the fixing pin 45 is located inside the locking groove 47. During this process, the compression ring 44 compresses the third sealing ring 32, causing the third sealing ring 32 to deform, thereby improving the sealing tightness and effectively preventing high-pressure water leakage.

[0037] Continue rotating the locking ring 42, and the locking groove 47 slides on the fixing pin 45 until the inclined surface of the pin 49 abuts against the fixing pin 45. At this time, the pin 49 overcomes the resistance of the spring 50 and moves along the limiting groove 48 until the pin 49 corresponds to the slot 51. Under the action of the spring 50, the pin 49 is inserted into the interior of the slot 51, thereby achieving double-locking. Even under strong vibration or water pressure impact, the connection can be kept stable and prevent accidental detachment. This not only improves safety but also overcomes the defect of traditional snap-fit ​​connectors that are prone to accidental loosening. During this process, the connecting ring 41 slides horizontally in the connecting cavity 43. When it is necessary to remove the pipe connector 2 from the pump connector 1, push the drive ring 52 to make the pin 49 overcome the resistance of the spring 50 and move in the limiting groove 48, thereby pulling the pin 49 out of the slot 51. At this time, the locking groove 47 can be rotated to slide the fixing pin 45 out of the locking groove 47 and the sliding groove 46.

[0038] The method of using the fire pump connector with automatic locking function of this utility model is as follows: First, the pump connector 1 is fixed on the fire pump by the flange plate 5 and sealed by the first sealing ring 6. The end of the pipe connector 2 is inserted into the connecting groove 7 inside the pump connector 1, and the end of the pipe connector 2 is sealed to the inner ring of the pump connector 1 by the second sealing ring 31. The fire water pipe is then fitted onto the other end of the pipe connector 2 and inserted into the protective groove 10, thereby protecting the end of the fire water pipe. The fire water pipe is then fixed to the limiting ring 9 by a clamp.

[0039] During the insertion of pipe connector 2 into pump connector 1, the limiting ring 9 pushes the locking ring 42 to move on pump connector 1. During this process, the compression ring 44 abuts against the third sealing ring 32. As the limiting ring 9 moves, under the action of the fixing pin 45, the side wall of the slide groove 46 always abuts against the fixing pin 45, and the locking ring 42 rotates along its axis. When pipe connector 2 moves to its limit position within pump connector 1, the locking ring 42 is rotated by one hand to allow it to rotate along the fixing pin 45 through the slide groove 46 until the fixing pin 45 is located inside the locking groove 47. During this process, the compression ring 44 compresses the third sealing ring 32, deforming it and thus improving the sealing tightness, effectively preventing high-pressure water leakage.

[0040] Continue rotating the locking ring 42, and the locking groove 47 slides on the fixing pin 45 until the inclined surface of the pin 49 abuts against the fixing pin 45. At this time, the pin 49 overcomes the resistance of the spring 50 and moves along the limiting groove 48 until the pin 49 corresponds to the slot 51. Under the action of the spring 50, the pin 49 is inserted into the interior of the slot 51, thereby achieving double-locking. Even under strong vibration or water pressure impact, the connection can be kept stable and prevent accidental detachment. This not only improves safety but also overcomes the defect of traditional snap-fit ​​connectors that are prone to accidental loosening. During this process, the connecting ring 41 slides horizontally in the connecting cavity 43. When it is necessary to remove the pipe connector 2 from the pump connector 1, push the drive ring 52 to make the pin 49 overcome the resistance of the spring 50 and move in the limiting groove 48, thereby pulling the pin 49 out of the slot 51. At this time, the locking groove 47 can be rotated to slide the fixing pin 45 out of the locking groove 47 and the sliding groove 46.

[0041] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The use of terms such as "a" or "an" in this specification and claims does not necessarily indicate a limitation on quantity. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0042] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed by the present invention without exceeding the protection scope of the present invention.

Claims

1. A fire pump connector with an automatic locking function, characterized in that: It includes a pump connector (1) connected to a fire pump and a pipe connector (2) connected to a fire water pipe. The other end of the pump connector (1) is sleeved on the end of the pipe connector (2). A sealing element (3) is provided between the pump connector (1) and the pipe connector (2). A locking unit (4) connected to the pipe connector (2) is provided on the pump connector (1).

2. The fire pump connector with automatic locking function according to claim 1, characterized in that: A flange plate (5) is fixedly installed on the outer ring of the end of the pump connector (1), and a first sealing ring (6) that abuts against the fire pump is provided on the side of the flange plate (5).

3. The fire pump connector with automatic locking function according to claim 1, characterized in that: The inner ring of the pump connector (1) is coaxially provided with a connecting groove (7), and the end of the pipe connector (2) is inserted into the connecting groove (7). The diameter of the connecting groove (7) is the same as the corresponding outer ring diameter of the pipe connector (2).

4. The fire pump connector with automatic locking function according to claim 3, characterized in that: The pipe joint (2) is provided with a fixing part (8) that cooperates with the fire water pipe on the outer ring of the end facing away from the pump joint (1). The outer ring of the pipe joint (2) is fixedly provided with a limiting ring (9). A protective groove (10) is opened between the side of the limiting ring (9) facing the fixing part (8) and the outer ring of the pipe joint (2).

5. The fire pump connector with automatic locking function according to claim 4, characterized in that: The sealing element (3) includes a second sealing ring (31) disposed between the end of the pipe joint (2) and the side wall of the connecting groove (7), and a third sealing ring (32) disposed on the pipe joint (2) between the end of the pump joint (1) and the limiting ring (9). The outer ring of the third sealing ring (32) has a wedge-shaped structure, and the outer ring diameter of the third sealing ring (32) gradually decreases in the direction of the limiting ring (9).

6. The fire pump connector with automatic locking function according to claim 5, characterized in that: The locking unit (4) includes a connecting ring (41) horizontally fixed on the side of the limiting ring (9) facing the pump connector (1). The cross-section of the connecting ring (41) is L-shaped. The pipe connector (2) is fitted with a locking ring (42). The locking ring (42) has a connecting cavity (43). The connecting ring (41) slides horizontally along its axial direction inside the connecting cavity (43). A compression ring (44) is fixedly provided on the locking ring (42) between the connecting ring (41) and the outer ring of the pipe joint (2), and the inner ring of the compression ring (44) is adapted to the outer ring of the third sealing ring (32).

7. The fire pump connector with automatic locking function according to claim 6, characterized in that: The outer ring of the pump connector (1) is fixedly provided with at least one fixing pin (45). The inner ring of the locking ring (42) is provided with a sliding groove (46) that is adapted to the fixing pin (45). The sliding groove (46) is a spiral structure that opens inward from the end of the locking ring (42). The inner ring of the locking ring (42) is provided with a locking groove (47) that communicates with the tail end of the sliding groove (46). The locking groove (47) is adapted to the fixing pin (45). The side of the locking groove (47) is provided with a limiting groove (48) along the axial direction of the locking ring (42). A pin (49) is slidably provided inside the limiting groove (48). The end of the pin (49) facing the sliding groove (46) is inclined. A spring (50) is provided between the end of the pin (49) and the inner end of the limiting groove (48). A slot (51) adapted to the pin (49) is provided on the upper part of the fixing pin (45).

8. The fire pump connector with automatic locking function according to claim 7, characterized in that: A drive ring (52) is sleeved on the outside of the locking ring (42), and the side of the drive ring (52) is fixedly connected to the top of the pin (49).

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