Rotatable fire hose joint

Abstract

The utility model discloses a rotatable fire hose joint which comprises a butt joint used for mutual butt joint and a connecting pipe used for being connected with a fire hose, and a through hole used for water passing is formed in the middle of the butt joint. The connecting pipe comprises a rear-end connecting part and a front-end connecting part, annular ball grooves are formed in the outer wall of the front-end connecting part and the inner wall of the butt joint respectively, a rotating ball is arranged in a space formed by buckling the two ball grooves, an assembly hole is formed in the butt joint in a penetrating mode, and the ball grooves are connected with the outside through the assembly hole. According to the rotatable fire hose connector, the rotating balls are arranged in the ball grooves, so that rotation between the butt joint and the connecting pipe can be achieved through the rotating balls, rotation is conducted at the position of the connector to enable a twisted hose to return to normal, the efficiency of straightening out the hose is greatly improved, and the rotatable fire hose connector is convenient to use. And the stability of fire-fighting water supply is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of joints, in particular to a rotatable fire hose joint. Background Art

[0002] During the use of fire hoses, it is often necessary to transfer position, direction, etc. During the laying and operation of the hoses, the hoses often twist. The use of fire hoses often requires every second, and it is a waste of time to straighten the hoses. Utility Model Content

[0003] In order to solve the deficiencies in the prior art, the utility model provides a rotatable fire hose joint. The rotatable fire hose joint arranges a rotating ball in a ball groove so that the joint and the connecting pipe can be rotated by the rotating ball. The twisted water hose is rotated at the joint to restore it to normal, which greatly improves the efficiency of straightening the water hose and improves the stability of the fire water supply.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a rotatable fire hose joint, comprising a butt joint for butting against each other and a connecting pipe for connecting the fire hose, wherein a through hole for passing water is provided in the middle of the butt joint;

[0006] The connecting pipe includes a rear end connecting portion for connecting a fire hose and a front end connecting portion for connecting a docking joint, the front end connecting portion and the rear end connecting portion are communicated with each other, the outer diameter of the front end connecting portion matches the inner diameter of the docking joint, the outer wall of the front end connecting portion and the inner wall of the docking joint are respectively provided with annular ball grooves, a rotating ball is arranged in the space formed by the buckling of the two ball grooves, an assembly hole is penetrated on the docking joint, the assembly hole connects the ball groove with the outside world, and a plug is detachably arranged in the assembly hole.

[0007] The rotatable fire hose joint of the utility model is used in the scenario of connecting two sections of fire hose. When in use, the butt joint is assembled with the connecting pipe, the connecting pipe is connected to the fire hose, and the two joints are connected through the butt joint. When in use, the butt joint and the connecting pipe realize relative rotation by rotating the ball, so as to straighten the twisted fire hose.

[0008] The rotatable fire hose joint of the utility model arranges a rotating ball in a ball groove, so that the joint and the connecting pipe can be rotated by the rotating ball, and the twisted water hose can be rotated at the joint to restore it to normal, which greatly improves the efficiency of straightening the water hose and improves the stability of fire water supply.

[0009] In a further technical solution, a first sealing ring is further provided between the front end connecting portion and the inner wall of the docking joint, and the first sealing ring is provided between the ball groove and the front end opening of the front end connecting portion.

[0010] The first sealing ring is provided to seal the connection between the connecting pipe and the butt joint, thereby preventing water from flowing out and releasing pressure from the gap between the front connecting part and the inner wall of the butt joint.

[0011] In a further technical solution, a plurality of connecting rings with right-angled triangular cross-sections are axially arranged on the inner wall of the rear end connecting portion, and the inclined surfaces on the connecting rings open toward the rear end of the connecting pipe.

[0012] By arranging the connection ring, when connecting the fire hose, the fire hose and the connection pipe are connected by tightening the copper ring, and the connection is tight.

[0013] In a further technical solution, a second sealing ring is provided at the opening of the docking joint away from the connecting pipe.

[0014] When the two butt joints are butted together, the openings of the two butt joints are aligned, and the second sealing ring can make the openings of the two butt joints butt tightly together to avoid water leakage.

[0015] In a further technical solution, the side surface of the second sealing ring extends out of the opening of the docking joint.

[0016] The second sealing ring extends out of the opening of the butt joint, so that when the two butt joints are butted, the second sealing ring contacts the opening first and then butts under the action of pressure, further improving the sealing of the butt joints at the butt joint.

[0017] In a further technical solution, a docking claw is provided at the opening of the docking joint, a docking groove is provided on the inner side of the docking claw, and an annular boss is provided on the open outer ring of the docking joint, the size of the boss matches the size of the docking groove, and the boss extends in the direction of the docking joint away from the opening.

[0018] During docking, the boss of the docking joint is nested in the docking groove of the docking claw to connect the two docking joints. Since the boss has a directional extension, when the docking joints are twisted against each other, the docking claw extends along the extension direction of the boss, so that the two docking joints move relative to each other while twisting, thereby achieving tight docking.

[0019] The beneficial effects are:

[0020] 1. The rotatable fire hose joint of the utility model is provided with a rotating ball in the ball groove, so that the joint and the connecting pipe can be rotated by the rotating ball, and the twisted hose is rotated at the joint to restore it to normal, which greatly improves the efficiency of straightening the hose and improves the stability of fire water supply.

[0021] 2. The first sealing ring is provided to seal the connection between the connecting pipe and the butt joint, thereby preventing water from flowing out and releasing pressure from the gap between the front connecting part and the inner wall of the butt joint.

[0022] 3. By setting the connecting ring, when connecting the fire hose, the fire hose and the connecting pipe are connected tightly by tightening the copper ring.

[0023] 4. When the two butt joints are butted together, the openings of the two butt joints are aligned, and the second sealing ring can make the openings of the two butt joints tightly butt together to avoid water leakage.

[0024] 5. The second sealing ring extends out of the opening of the butt joint, so that when the two butt joints are butted, the second sealing ring contacts the opening first, and then butts under the action of pressure, further improving the sealing of the butt joints at the butt joint.

[0025] 6. During docking, the boss of the docking joint is nested in the docking groove of the docking claw to connect the two docking joints. Since the boss has a directional extension, when the docking joints are twisted against each other, the docking claw extends along the extension direction of the boss, so that the two docking joints move relative to each other while twisting, thereby achieving tight docking. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the internal structure of a rotatable fire hose joint according to an embodiment of the utility model.

[0027] 10. Connecting pipe; 11. Front end connecting part; 111. First sealing ring; 12. Rear end connecting part; 20. Butt joint; 21. Ball groove; 22. Rotating ball; 23. Assembly hole; 24. Butt claw; 241. Butt groove; 25. Second sealing ring. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings:

[0029] Example:

[0030] A rotatable fire hose joint, such as Figure 1 As shown, it includes a butt joint 20 for butting against each other and a connecting pipe 10 for connecting a fire hose, and a through hole for passing water is opened in the middle of the butt joint 20;

[0031] The connecting pipe 10 includes a rear end connecting portion 12 for connecting a fire hose and a front end connecting portion 11 for connecting a docking joint 20. The front end connecting portion 11 and the rear end connecting portion 12 are connected to each other. The outer diameter of the front end connecting portion 11 matches the inner diameter of the docking joint 20. The outer wall of the front end connecting portion 11 and the inner wall of the docking joint 20 are respectively provided with annular ball grooves 21. A rotating ball 22 is arranged in the space formed by the two ball grooves 21 being buckled together. An assembly hole 23 is pierced on the docking joint 20. The assembly hole 23 connects the ball groove 21 with the outside world. A plug is detachably arranged in the assembly hole 23.

[0032] The rotatable fire hose connector of the utility model is used in the scenario of connecting two sections of fire hose. When in use, the docking joint 20 is assembled with the connecting pipe 10, and the connecting pipe 10 is connected to the fire hose. The two connectors are connected through the docking joint 20. When in use, the docking joint 20 and the connecting pipe 10 achieve relative rotation by rotating the ball 22, thereby straightening the twisted fire hose.

[0033] When the butt joint 20 and the connecting tube 10 are assembled, the front end connecting portion 11 of the connecting tube 10 is first inserted into the opening at one end of the butt joint 20. Since there is a step between the front end connecting portion 11 and the rear end connecting portion 12, that is, the step can be used as a positioning reference when the connecting tube 10 is inserted, the step touches the opening of the butt joint 20, that is, when the front end connecting portion 11 is inserted to the deepest position, the semicircular ball groove 21 of the front end connecting portion 11 is just opposite to the semicircular ball groove 21 on the inner wall of the butt joint 20. At this time, the two semicircular ball grooves 21 form a ball space, and then the rotating ball is inserted from the assembly hole 23 outside the butt joint 20. 22, the rotating ball 22 enters the ball space from the assembly hole 23 all the way down, and as the rotating ball 22 is continuously inserted, the rotating balls 22 are arranged in sequence in the annular ball space, and finally the plug is inserted into the assembly hole 23. At this time, the rotating balls 22 are in the assembly space, and the connecting pipe 10 and the docking head 20 can rotate relative to each other. At the same time, since a plurality of rotating balls 22 are half stuck in the ball groove 21 of the front connecting part 11, and half stuck in the ball groove 21 of the docking head 20, the rotating balls 22 also prevent the connecting pipe 10 from withdrawing from the docking head 20, so that the two are connected and can rotate relative to each other.

[0034] The rotatable fire hose joint of the utility model is provided with a rotating ball 22 in the ball groove 21, so that the joint 20 and the connecting pipe 10 can be rotated by the rotating ball 22, and the twisted water hose can be rotated at the joint to restore it to normal, which greatly improves the efficiency of straightening the water hose and improves the stability of the fire water supply.

[0035] In another embodiment, if Figure 1As shown, a first sealing ring 111 is further provided between the front end connecting portion 11 and the inner wall of the docking head 20 , and the first sealing ring 111 is provided between the ball groove 21 and the front end opening of the front end connecting portion 11 .

[0036] The first sealing ring 111 is provided to seal the connection between the connecting pipe 10 and the butt joint 20 , thereby preventing water from flowing out and releasing pressure from the gap between the front connecting portion 11 and the inner wall of the butt joint 20 .

[0037] In another embodiment, if Figure 1 As shown, a plurality of connecting rings with right-angled triangular cross-sections are arranged axially on the inner wall of the rear end connecting portion 12 , and the inclined surfaces on the connecting rings are open toward the rear end of the connecting pipe 10 .

[0038] By providing the connection ring, when connecting the fire hose, the fire hose and the connection pipe 10 are connected tightly by tightening the copper ring.

[0039] The specific process is to insert the fire hose into the rear end connection part 12, then put the copper ring into the fire hose, use the tensioning equipment to tighten the copper ring outward, and the copper ring squeezes the fire hose at each connection ring of the rear end connection part 12, thus completing the connection between the fire hose and the connecting pipe 10.

[0040] It should be emphasized that the copper ring tension connection method is the existing technology of the fire hose and the connecting pipe 10, which will not be repeated here.

[0041] In another embodiment, if Figure 1 As shown, a second sealing ring 25 is provided at the opening of the butt joint 20 away from the connecting pipe 10 .

[0042] When the two butt joints 20 are butted together, the openings of the two butt joints 20 are aligned, and the second sealing ring 25 can make the openings of the two butt joints 20 butt tightly together to avoid water leakage.

[0043] In another embodiment, if Figure 1 As shown, the side surface of the second sealing ring 25 extends out of the opening of the joint 20 .

[0044] The second sealing ring 25 extends out of the opening of the butt joint 20, so that when the two butt joints 20 are butted, the second sealing ring 25 contacts the opening first and then butts under pressure, further improving the sealing performance of the butt joint 20 at the butt joint.

[0045] In another embodiment, if Figure 1As shown, a docking claw 24 is provided at the opening of the docking joint 20, a docking groove 241 is provided on the inner side of the docking claw 24, and an annular boss is provided on the open outer ring of the docking joint 20, the size of the boss matches the size of the docking groove 241, and the boss extends in the direction of the docking joint 20 away from the opening.

[0046] During docking, the boss of the docking joint 20 is nested in the docking groove 241 of the docking claw 24 to connect the two docking joints 20. Since the boss has a directional extension, when the docking joints 20 are twisted against each other, the docking claw 24 extends along the extension direction of the boss, so that the two docking joints 20 can move relative to each other while twisting, thereby achieving tight docking.

[0047] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A rotatable fire hose joint, characterized in that: It comprises a butt joint for butting together and a connecting pipe for connecting a fire hose, wherein a through hole for passing water is provided in the middle of the butt joint; The connecting pipe includes a rear end connecting portion for connecting a fire hose and a front end connecting portion for connecting a docking joint, the front end connecting portion and the rear end connecting portion are communicated with each other, the outer diameter of the front end connecting portion matches the inner diameter of the docking joint, the outer wall of the front end connecting portion and the inner wall of the docking joint are respectively provided with annular ball grooves, a rotating ball is arranged in the space formed by the buckling of the two ball grooves, an assembly hole is penetrated on the docking joint, the assembly hole connects the ball groove with the outside world, and a plug is detachably arranged in the assembly hole.

2. The rotatable fire hose joint according to claim 1, characterized in that: A first sealing ring is also arranged between the front end connecting portion and the inner wall of the butt joint, and the first sealing ring is arranged between the ball groove and the front end opening of the front end connecting portion.

3. The rotatable fire hose joint according to claim 1, characterized in that: A plurality of connecting rings with right-angled triangular cross-sections are arranged axially in a delayed manner on the inner wall of the rear end connecting portion, and the inclined surfaces on the connecting rings open toward the rear end of the connecting pipe.

4. The rotatable fire hose joint according to claim 1 or 2, characterized in that: A second sealing ring is arranged at the opening of the butt joint away from the connecting pipe.

5. The rotatable fire hose joint according to claim 4, characterized in that: The side surface of the second sealing ring extends out of the opening of the docking joint.

6. The rotatable fire hose joint according to claim 1, characterized in that: The opening of the docking joint is provided with a docking claw, the inner side of the docking claw is provided with a docking groove, the open outer ring of the docking joint is provided with an annular boss, the size of the boss matches the size of the docking groove, and the boss extends in the direction of the docking joint away from the opening.

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