Fire-fighting lance connector convenient to install

Abstract

The utility model discloses a fire-fighting lance connector convenient to install, and relates to the technical field of fire-fighting lances, the fire-fighting lance connector convenient to install comprises a water hose connected with a fire-fighting lance, a fixing ring, a fixing head, a threaded sleeve and a clamping ring, the fixing ring is fixedly connected with the fire-fighting lance, the fixing head is fixedly connected with the water hose, the fixing head can be inserted into the fixing ring, and the threaded sleeve is fixedly connected with the clamping ring. A sealing gasket is arranged between the fixing head and the fixing ring, and a plurality of limiting strips parallel to the axial direction are evenly arranged on the inner side wall of the fixing ring. When the fixing head is inserted into the fixing ring, the limiting strip on the fixing ring is connected with the limiting groove in the fixing head in an inserted mode to conduct limiting in the circumferential direction, finally the threaded sleeve outside the fixing ring rotates to push the clamping plate on the inner side of the clamping ring to axially clamp the fixing head, and no matter how a person rotates the fire-fighting lance, the person cannot touch the threaded sleeve; the connection stability of the fire-fighting lance and the water hose can be guaranteed, and installation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting water guns, in particular to a fire-fighting water gun connecting joint which is easy to install. Background Art

[0002] Fire hose: It is a water-jetting tool used for firefighting. When connected to a hose, it sprays dense and rich water streams. It has advantages such as long range and large water volume. According to the different jet forms and characteristics, it can be divided into: direct current water gun, spray water gun, multi-purpose water gun, etc. Among them, the most commonly used water guns are direct current and spray water guns.

[0003] Since fire hoses are usually used in emergency situations, it is very important to connect them conveniently. The most common connection method is threaded connection, which is achieved by screwing the fire hose fixing ring to the hose fixing head.

[0004] However, in actual use, it is found that when personnel operate the fire hose, they may rotate the fire hose according to the use environment, and the water hose is not easy to twist when conveying high-pressure water, so the fire hose fixing ring and the belt fixing head may become loose. Especially in an emergency, the operator's rotation force is limited, and looseness is more likely to occur, resulting in water leakage at the joint, or even the fire hose falling off, which may be dangerous. Utility Model Content

[0005] In response to the above-mentioned deficiencies in the prior art, the utility model provides a fire hose connection joint that is easy to install. When the fixed head is inserted into the fixed ring, the upper limit strip on the fixed ring is plugged into the limit groove on the fixed head to limit the circumferential direction. Finally, the threaded sleeve on the outside of the fixed ring is rotated to push the clamping plate on the inside of the clamping ring to axially clamp the fixed head. No matter how the personnel rotates the fire hose, the threaded sleeve will not be touched, and the stability of the connection between the fire hose and the water hose can be guaranteed, and the installation is convenient and quick.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a fire hose connection joint that is easy to install, including a water hose connected to the fire hose, a fixing ring, a fixing head, a threaded sleeve and a clamping ring, the fixing ring is fixedly connected to the fire hose, the fixing head is fixedly connected to the water hose, the fixing head can be inserted into the fixing ring, a sealing gasket is provided between the fixing head and the fixing ring, the inner side wall of the fixing ring is evenly provided with a plurality of limit strips parallel to the axial direction, the outer side wall of the fixing head is provided with a plurality of limit grooves matching the limit strips, the fixing head is inserted into the fixing ring, and the fixing head is fixedly connected to the water hose. When the fixing ring is inserted, the limit bar is inserted into the limit groove, and the fixing ring is radially penetrated by a plurality of sliding slots, and the side surface of the fixed head is provided with a card slot corresponding to the sliding slot position, and a card plate is provided in each sliding slot and axially sliding. One end of the inner side of the card plate is inserted into the card slot, and one end of the outer side of the plurality of card plates is fixedly connected to the inner side wall of the clamping ring, and the outer wall of the fixing ring is provided with an external thread matching the thread of the threaded sleeve, and the threaded sleeve is screwed to the external thread on the fixing ring. Rotating the threaded sleeve for axial movement can push the clamping ring and the card plate to move axially, and the card plate can abut against the side wall of the card slot.

[0007] Preferably, the inner ring of the fixing ring is provided with a stepped groove, the front end of the fixing head is provided with a stepped platform matching the stepped groove, and a sealing gasket is provided between the end face of the stepped platform and the end face of the stepped groove.

[0008] Preferably, the sealing gasket adopts a double safety sealing ring.

[0009] Preferably, the limiting strip and the fixing ring are manufactured by integral molding.

[0010] Preferably, a retractable protective cover is provided on the outside of the fixing ring.

[0011] The utility model provides a fire hose connection joint that is easy to install and has the following beneficial effects:

[0012] 1. When the fixed head is inserted into the fixed ring, the upper limit strip on the fixed ring engages with the limit groove on the fixed head to limit the circumferential direction. Finally, the threaded sleeve on the outside of the fixed ring rotates to push the clamping plate on the inside of the clamping ring to clamp the fixed head axially. No matter how the personnel rotate the fire hose, the threaded sleeve will not touch the threaded sleeve, which can ensure the stability of the connection between the fire hose and the water hose, and the installation is convenient and quick.

[0013] 2. In the present invention, a stepped groove is provided in the fixing ring, a stepped platform is provided in front of the fixing head, and a sealing gasket is provided on the contact end surface of the stepped groove and the stepped platform to improve the sealing performance between the fixing ring and the fixing head. The sealing gasket can adopt a double insurance sealing ring to further improve the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front cross-sectional view of a fire hose connection joint that is easy to install in the utility model;

[0015] Figure 2 It is an enlarged view of point B of the present utility model;

[0016] Figure 3 It is a left side cross-sectional schematic diagram of the utility model at AA.

[0017] In the figure: 1. Water hose; 2. Fixed head; 3. External thread; 4. Threaded sleeve; 5. Clamping ring; 6. Clamping plate; 7. Fire hose; 8. Sealing gasket; 9. Step groove; 10. Step platform; 11. Slide; 12. Clamping groove; 13. Fixed ring; 14. Protective sleeve; 15. Limiting groove; 16. Limiting strip. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] like Figure 1-3 As shown, a fire hose 7 connection joint that is easy to install includes a water hose 1 connected to the fire hose 7, a fixing ring 13, a fixing head 2, a threaded sleeve 4 and a clamping ring 5. The fixing ring 13 is fixedly connected to the fire hose 7, and the fixing head 2 is fixedly connected to the water hose 1. The fixing head 2 can be inserted into the fixing ring 13, and a sealing gasket 8 is provided between the fixing head 2 and the fixing ring 13. The inner side wall of the fixing ring 13 is evenly provided with a plurality of limit strips 16 parallel to the axial direction, and the outer side wall of the fixing head 2 is provided with a plurality of limit grooves 15 matching the limit strips 16. When the fixing head 2 is inserted into the fixing ring 13, the limit strips 16 are inserted into the limit grooves 15. A plurality of sliding openings 11 are radially penetrated on the fixing ring 13, and a card groove 12 is provided on the side surface of the fixing head 2 corresponding to the position of the sliding opening 11. Each sliding opening 11 is penetrated and axially A card plate 6 is provided for sliding, and one end of the inner side of the card plate 6 is inserted into the card groove 12. The outer ends of multiple card plates 6 are fixedly connected to the inner wall of the clamping ring 5. The outer wall of the fixing ring 13 is provided with an external thread 3 matching the thread of the threaded sleeve 4. The threaded sleeve 4 is screwed to the external thread 3 on the fixing ring 13. Rotating the threaded sleeve 4 for axial movement can push the clamping ring 5 and the card plate 6 to axially move, and the card plate 6 can abut against the side wall of the card groove 12; the inner ring of the fixing ring 13 is provided with a stepped groove 9, and the front end of the fixed head 2 is provided with a stepped platform 10 matching the stepped groove 9, and a sealing gasket 8 is provided between the end face of the stepped platform 10 and the end face of the stepped groove 9; the sealing gasket 8 adopts a double insurance sealing ring; the limit strip 16 and the fixing ring 13 are made of one-piece molding; the outside of the fixing ring 13 is provided with a protective cover 14 that can be pulled out.

[0020] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process, which are as follows:

[0021] According to the instruction manual Figure 1-3 It can be seen that in the present invention, the fixing ring 13 is fixedly connected to the tail of the fire hose 7, the fixing head 2 is fixedly connected to the water hose 1, the fixing head 2 can be inserted into the fixing ring 13, and a sealing gasket 8 is provided between the fixing head 2 and the fixing ring 13, which is the existing technology. During installation, the fixing head 2 is inserted into the fixing ring 13, and at this time, the multiple limiting strips 16 on the inner wall of the fixing ring 13 are also inserted into the limiting groove 15 provided on the outer wall of the fixing head 2. Since the limiting strips 16 and the limiting grooves 15 are both axially designed, the fixing head 2 can be inserted into the fixing ring 13 and cannot rotate relative to each other, and the circumferential direction is limited. After the insertion is completed, the threaded sleeve 4 screwed on the external thread 3 of the rotating fixing ring 13 can be rotated to move axially. Here, the threaded sleeve 4 is moved toward the side of the fire hose 7, that is, Figure 1 As shown in the figure, it moves to the left. Since the clamping ring 5 is sleeved on the outside of the fixing ring 13 and a plurality of clamping plates 6 are fixedly connected to the inner wall, the clamping plates 6 pass through the sliding port 11 opened on the fixing ring 13 and can move axially in the sliding port 11. Therefore, the threaded sleeve 4 pushes the clamping ring 5 and the clamping plate 6 to move to the left. Since one end of the inner side of the clamping plate 6 is inserted into the clamping groove 12 of the fixed head 2, the clamping plate 6 moves to the left and pushes the side wall of the clamping groove 12 to make the fixed head 2 abut against the inside of the fixing ring 13 to the left and be locked, so as to prevent the fixed head 2 and the fixing ring 13 from moving relative to each other in the axial direction. Compared with the prior art, when the fixed head 2 is inserted into the fixed ring 13, the upper limit strip 16 on the fixed ring 13 is plugged into the limit groove 15 on the fixed head 2 to limit the circumferential direction. Finally, the threaded sleeve 4 outside the fixed ring 13 is rotated to push the clamping plate 6 inside the clamping ring 5 to axially clamp the fixed head 2. No matter how the personnel rotates the fire hose 7, the threaded sleeve 4 cannot be touched, and the connection stability of the fire hose 7 and the water hose 1 can be guaranteed, and the installation is convenient and quick.

[0022] The inner ring of the fixing ring 13 is provided with a stepped groove 9, and the front end of the fixing head 2 is provided with a stepped platform 10 that matches the stepped groove 9. A sealing gasket 8 is provided between the end surface of the stepped platform 10 and the end surface of the stepped groove 9 to improve the sealing performance between the fixing ring 13 and the fixing head 2. In particular, the sealing gasket 8 adopts a double-insurance sealing ring to further improve the sealing effect.

[0023] The limiting strip 16 and the fixing ring 13 are integrally formed to increase the connection strength and prolong the service life.

[0024] Among them, a protective cover 14 that can be pulled out is provided on the outside of the fixing ring 13. After the connection is completed, the protective cover 14 covers the connection to prevent people from accidentally touching the threaded sleeve 4 and loosening it.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire hose (7) connection joint that is easy to install, comprising a water hose (1) connected to the fire hose (7), a fixing ring (13), a fixing head (2), a threaded sleeve (4) and a clamping ring (5), wherein the fixing ring (13) is fixedly connected to the fire hose (7), the fixing head (2) is fixedly connected to the water hose (1), the fixing head (2) can be inserted into the fixing ring (13), and a sealing gasket (8) is provided between the fixing head (2) and the fixing ring (13), characterized in that: The inner side wall of the fixing ring (13) is evenly provided with a plurality of limit strips (16) parallel to the axial direction, and the outer side wall of the fixing head (2) is provided with a plurality of limit grooves (15) matching the limit strips (16). When the fixing head (2) is inserted into the fixing ring (13), the limit strips (16) are inserted into the limit grooves (15). The fixing ring (13) is provided with a plurality of sliding openings (11) radially through it, and the side surface of the fixing head (2) is provided with a card slot (12) corresponding to the position of the sliding opening (11). Each sliding opening (11) is penetrated and A card plate (6) is provided for axial sliding, and one inner end of the card plate (6) is inserted into the card slot (12). One outer end of the plurality of card plates (6) is fixedly connected to the inner wall of the clamping ring (5). The outer wall of the fixing ring (13) is provided with an external thread (3) matching the thread of the threaded sleeve (4). The threaded sleeve (4) is screwed to the external thread (3) on the fixing ring (13). Rotating the threaded sleeve (4) to move axially can push the clamping ring (5) and the card plate (6) to move axially, and the card plate (6) can abut against the side wall of the card slot (12).

2. A fire hose (7) connection joint that is easy to install according to claim 1, characterized in that: The inner ring of the fixing ring (13) is provided with a stepped groove (9), the front end of the fixing head (2) is provided with a stepped platform (10) matching the stepped groove (9), and a sealing gasket (8) is provided between the end face of the stepped platform (10) and the end face of the stepped groove (9).

3. A fire hose (7) connection joint that is easy to install according to claim 2, characterized in that: The sealing pad (8) adopts a double safety sealing ring.

4. A fire hose (7) connection joint that is easy to install according to claim 1, characterized in that: The limiting strip (16) and the fixing ring (13) are manufactured by integral molding.

5. A fire hose (7) connection joint that is easy to install according to claim 1, characterized in that: A protective cover (14) that can be unfolded is provided outside the fixing ring (13).

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