Self-expansion type quick connecting device for fire hose

Abstract

The utility model relates to the technical field of fire-fighting equipment, in particular to a self-expansion type fire hose quick connecting device, which comprises an inner joint, an outer joint and a hoop, the inner joint is sequentially provided with a convex edge, a screw joint part and a sleeving part along the axial direction, the sleeving part is provided with a convex ring, a mounting groove is formed between the convex ring and the screw joint part, and the outer joint is connected with the hoop. A self-expansion rubber ring is arranged in the installation groove, the outer side of the sleeving part is sleeved with a fixing sleeve, one end of the fixing sleeve is in threaded connection with the threaded connection part, the other end of the fixing sleeve abuts against the protruding ring, and the hoop is arranged at the end of the fixing sleeve. According to the fire hose fixing device, the mode that the fixing sleeve and the hoop are combined is adopted, the fire hose can be effectively prevented from loosening or falling off due to pressure in the using process, the device is more convenient to fix and disassemble, and a user can complete connection or disconnection operation without using a complex tool.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire fighting equipment technical field especially relates to a self -expanding type fire -fighting water hose quick connecting device. BACKGROUND

[0002] At present, the connecting mode between fire-fighting water hose and metal joint generally has two kinds: one is directly adopting iron wire to bind, not only time -consuming, and have iron wire and vice etc. on hand tool, two is adopting flat hoop with nut tension device, often leads to water hose to fall off from flat hoop because of high water pressure in actual use, must use tool to screw again, delays the opportunity of fire fighting.

[0003] The Chinese invention patent with the publication number CN109253332A discloses a novel fire-fighting water hose pipe joint, which realizes the close connection of water pipe and connecting pipe by setting connecting block, groove and leakage prevention ring, and the joint and connecting pipe can be fixed together tightly because of the water expansion characteristics of the leakage prevention ring, but the fire-fighting water hose pipe joint needs to be fixed with an expandable joint at the end of the fire-fighting water hose in advance, which is not suitable for the connection of the current conventional fire-fighting water hose. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a self-expanding type fire-fighting water hose quick connecting device to solve the problems in the background art.

[0005] The above-mentioned purpose of the utility model is realized by the following technical scheme: a self-expanding type fire-fighting water hose quick connecting device, which comprises an inner joint, an outer joint and a clamp, the inner joint is sequentially provided with a convex edge, a screwing part and a sleeving part along the axial direction, a convex ring is arranged on the sleeving part, an installation groove is formed between the convex ring and the screwing part, a self-expanding rubber ring is arranged in the installation groove, a fixing sleeve is sleeved on the outer side of the sleeving part, one end of the fixing sleeve is screwed on the screwing part, and the other end abuts against the convex ring, and the clamp is arranged at the end of the fixing sleeve.

[0006] Preferably, an annular clamping groove is arranged on the screwing part, the clamping groove and the installation groove are arranged on the left and right sides of the convex ring, and the clamp is arranged in the clamping groove.

[0007] Preferably, the width of the clamping groove is greater than the width of the clamp.

[0008] Preferably, the depth of the clamping groove is less than the thickness of the clamp.

[0009] Preferably, one end of the fixing sleeve is provided with an internal thread, the fixing sleeve is screwed on the screwing part through the internal thread, the other end of the fixing sleeve is of a necked structure, and the necked end of the fixing sleeve abuts against the end face of the convex ring.

[0010] Preferably, the end face of the convex ring towards the side of the hoop is an inclined face, and the end of the fixing sleeve is a tapered necked end matching the inclined face.

[0011] Preferably, the outer diameter of the convex ring is smaller than the outer diameter of the screwing part.

[0012] Preferably, the outer joint is sleeved outside the inner joint, an annular limiting part is arranged at one end of the outer joint towards the fixing sleeve, a stopping edge is arranged at one end of the fixing sleeve towards the outer joint, and the limiting part is located between the convex edge and the stopping edge.

[0013] The utility model discloses the beneficial effects of:

[0014] 1. The utility model discloses the combination of fixing sleeve and hoop, which can effectively prevent the fire hose from loosening or falling off due to pressure during use, and makes the fixing and dismounting of the device more convenient, so that the user can complete the connection or disconnection operation without using complex tools.

[0015] 2. The self-expanding rubber ring is arranged in the mounting groove, which can fix the fire hose on the inner joint after expansion, and the connection is stable, sealed and good, and the safety hazards such as water leakage or falling off caused by connection problems are reduced. DRAWINGS

[0016] Figure 1 is the structural schematic diagram of the utility model embodiment;

[0017] Figure 2 is the exploded view of the utility model embodiment;

[0018] Figure 3 is the sectional view of the utility model embodiment;

[0019] Figure 4 is the installation schematic diagram of the fire hose in the utility model embodiment;

[0020] In the figure: 1-outer joint, 101-limiting part, 2-inner joint, 201-convex edge, 202-screwing part, 203-sleeving part, 204-convex ring, 205-mounting groove, 206-clamping groove, 3-hoop, 4-fixing sleeve, 401-necked end, 402-stopping edge, 5-self-expanding rubber ring, 6-fire hose. DETAILED DESCRIPTION

[0021] The utility model will be further described in detail below in combination with the drawings.

[0022] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and a person skilled in the art can make a modification without creative contribution according to the need after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

[0023] Embodiment: as Figures 1-3 The self-expanding fire hose quick connecting device shown in the figure, comprising an inner joint 2, an outer joint 1 and a clamp 3, the outer joint 1 is sleeved on the outer side of the inner joint 2, and the clamp 3 is clamped on the inner joint 2.

[0024] The inner joint 2 is sequentially provided with a convex edge 201, a screwing part 202 and a sleeving part 203 in the axial direction, the sleeving part 203 is provided with a convex ring 204, the mounting groove 205 is formed between the convex ring 204 and the screwing part 202, and the self-expanding rubber ring 5 is arranged in the mounting groove 205.

[0025] The self-expanding rubber ring 5 is made of water-expanding rubber material.

[0026] The outer side of the sleeving part 203 is sleeved with a fixing sleeve 4, one end of the fixing sleeve 4 is screwed on the screwing part 202, the other end of the fixing sleeve 4 abuts against the convex ring 204, and the clamp 3 is arranged at the end of the fixing sleeve 4. The outer diameter of the convex ring 204 is smaller than the outer diameter of the screwing part 202.

[0027] One end of the fixing sleeve 4 is provided with an internal thread, and the fixing sleeve 4 is screwed on the screwing part 202 through the internal thread. The other end of the fixing sleeve 4 is a necked structure, and the necked end 401 of the fixing sleeve 4 abuts against the end face of the convex ring 204.

[0028] The end face of the convex ring 204 towards the clamp 3 is an inclined face, and the end of the fixing sleeve 4 is a tapered necked end 401 matched with the inclined face.

[0029] The screwing part 202 is provided with an annular clamping groove 206, the clamping groove 206 and the mounting groove 205 are arranged on the left and right sides of the convex ring 204, and the clamp 3 is arranged in the clamping groove 206.

[0030] The width of the clamping groove 206 is greater than the width of the clamp 3, so that the clamp 3 can press the fire hose 6 into the clamping groove 206. The depth of the clamping groove 206 is less than the thickness of the clamp 3, so that the surface of the clamp body of the clamp 3 protrudes from the surface of the sleeving part 203, and can limit the fixing sleeve 4.

[0031] The end of the outer joint 1 towards the fixing sleeve 4 is provided with an annular limiting part 101, the end of the fixing sleeve 4 towards the outer joint 1 is provided with a stop edge 402, and the limiting part 101 is located between the convex edge 201 and the stop edge 402.

[0032] As Figure 4As shown, in the installation, the fixing sleeve 4, the self-expanding rubber ring 5 and the outer joint 1 are sequentially sleeved on the fire hose 6; then the end of the fire hose 6 is sleeved on the sleeving part 203 of the inner joint 2; then the outer joint 1 is sequentially moved from the fire hose 6 to the outer side of the inner joint 2, the self-expanding rubber ring 5 is moved into the installation groove 205, the fire hose 6 is pressed into the installation groove 205, the fixing sleeve 4 is moved to the outer side of the inner joint 2 and the two are screwed, at this time, a part of the fire hose 6 is pressed into the installation groove 205, and the other part is clamped between the fixing sleeve 4 and the convex ring 204; finally, the clamp 3 is installed, the fire hose 6 is clamped in the clamping groove 206 through the clamp 3, and the installation of the fire hose 6 is completed. In the use process, when water seeps into the installation groove 205, the self-expanding rubber ring 5 expands when encountering water, fills the gap in the installation groove 205, and tightly presses the fire hose 6 in the installation groove 205, preventing the fire hose 6 from loosening.

Claims

1. A self-inflating fire hose quick coupling device comprising an inner coupling (2), an outer coupling (1) and a clamp (3), characterized in that, The inner joint (2) is sequentially provided with a convex edge (201), a screwing part (202) and a sleeving part (203) in the axial direction, the sleeving part (203) is provided with a convex ring (204), the convex ring (204) and the screwing part (202) form a mounting groove (205), the mounting groove (205) is provided with a self-expanding rubber ring (5), the outer side of the sleeving part (203) is sleeved with a fixing sleeve (4), one end of the fixing sleeve (4) is screwed on the screwing part (202), the other end abuts against the convex ring (204), and the hoop (3) is arranged at the end of the fixing sleeve (4).

2. A self-inflating fire hose quick coupling device according to claim 1, characterized in that: The screwing part (202) is provided with an annular clamping groove (206), the clamping groove (206) and the mounting groove (205) are arranged on the left and right sides of the convex ring (204), and the hoop (3) is arranged in the clamping groove (206).

3. A self-inflating fire hose quick coupling device according to claim 2, characterized in that: The width of the clamping groove (206) is greater than the width of the hoop (3).

4. A self-inflating fire hose quick coupling device according to claim 3, characterized in that: The depth of the clamping groove (206) is less than the thickness of the hoop (3).

5. A self-inflating fire hose coupling device as defined in claim 1, wherein: One end of the fixing sleeve (4) is provided with an internal thread, the fixing sleeve (4) is screwed on the screwing part (202) through the internal thread, the other end of the fixing sleeve (4) is a necked structure, and the necked end (401) of the fixing sleeve (4) abuts against the end face of the convex ring (204).

6. A self-inflating fire hose coupling according to claim 5, wherein: The end face of the convex ring (204) towards the hoop (3) is an inclined face, and the end of the fixing sleeve (4) is a tapered necked end (401) matched with the inclined face.

7. A self-inflating fire hose coupling according to claim 6, characterised in that: The outer diameter of the convex ring (204) is less than the outer diameter of the screwing part (202).

8. A self-inflating fire hose coupling as defined in claim 1, characterized in that: The outer joint (1) is sleeved outside the inner joint (2), one end of the outer joint (1) towards the fixing sleeve (4) is provided with an annular limiting part (101), one end of the fixing sleeve (4) towards the outer joint (1) is provided with a stop edge (402), and the limiting part (101) is located between the convex edge (201) and the stop edge (402).

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