A fire hose delay joint

Abstract

The present invention discloses a fire hose delay joint, comprising a water inlet joint, a water outlet joint and an outer cylinder, wherein the outer cylinder is connected between the water inlet joint and the water outlet joint, and the water inlet joint is movably connected to the outer cylinder through a nut, and further comprises an inner cylinder arranged in the outer cylinder and a buffer cylinder fixedly installed between the inner cylinder and the outer cylinder, wherein the inner cylinder extends into the interior of the outer cylinder and is provided with a sealed bottom plate, and a plurality of water outlet holes are evenly opened on the side wall of the inner cylinder close to the bottom plate; a limiting plate is fixedly provided on the outer wall of the inner cylinder, and gaps are left between the inner cylinder and the bottom plate and the buffer cylinder. The present invention cooperates with the inner cylinder and the buffer cylinder so that the fire water flow passes through the water inlet joint, the inner cylinder, the water outlet hole, the buffer cylinder, the outer cylinder and the water outlet joint in sequence, thereby increasing the flow length of the water flow, driving the inner cylinder to move in the buffer cylinder through water pressure, increasing the time the fire water stays in the joint, reducing the preparation time for fire rescue work, and winning precious time for fire rescue work.

Description

Technical Field

[0001] The invention relates to the field of fire fighting equipment, in particular to a fire hose delay joint. Background Art

[0002] In the field of firefighting equipment, fire hydrants, fire hoses, joints, nozzles, extension joints, etc. are all important and indispensable equipment in firefighting and rescue work. Especially in buildings, processing and manufacturing industries, chemical manufacturing industries, logistics parks, warehouses, etc., in emergency firefighting and rescue tasks, more firefighting and rescue time will be gained by reducing the preparation time of firefighting and rescue equipment. In the existing preparation work for rescue tasks, in the case of single-person rescue, the fire hose is first laid out, and then the control valve of the fire hydrant is opened after turning back, and then the nozzle of the water pipe is turned back and aimed at the fire source for rescue work. Therefore, such round-trip preparation work will delay the firefighting time, resulting in slow on-site firefighting operations and causing more losses. If the control valve of the fire hydrant is opened first, and then the fire hose is placed and connected, the connection between the fire hoses will be difficult due to excessive and fast water pressure. Based on this, the present application proposes a fire hose delay joint to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a fire hose delay joint that can slow down the speed of fire water flow, avoid the rescue equipment preparation time and round-trip time in fire rescue work, so as to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A fire hose delay joint, comprising a water inlet joint, a water outlet joint and an outer tube, wherein the outer tube is connected between the water inlet joint and the water outlet joint, and the water inlet joint is movably connected to the outer tube through a nut, and further comprising

[0006] An inner cylinder is arranged in the outer cylinder, one end of the inner cylinder is fixedly connected to the water inlet joint, the other end of the inner cylinder extends into the outer cylinder and is provided with a sealed bottom plate, and a plurality of water outlet holes are evenly opened on the side wall of the inner cylinder near the bottom plate;

[0007] A buffer cylinder is fixedly installed between the inner cylinder and the outer cylinder, and the buffer cylinder is sleeved on the outside of the other end of the inner cylinder. A limit plate located outside the buffer cylinder is fixedly arranged on the outer wall of the inner cylinder. Gaps are left between the inner cylinder and the bottom plate and the buffer cylinder, and an upper baffle parallel to the inner cylinder is arranged inside the nut.

[0008] As a further solution of the present invention: the upper baffle is vertically arranged on the inner wall of the nut, a packaging plate is vertically arranged on the upper baffle, a sealing ring is arranged between the inner tube and the packaging plate, and the inner tube slides in the sealing ring along the axial direction of the inner tube.

[0009] As a further solution of the present invention: a guide rail located between the water outlet holes is provided on the outer wall of the inner cylinder, a guide plate cooperating with the guide rail is provided on the inner wall of the buffer cylinder, a guide groove is provided on the guide plate, and the guide rail slides in the guide groove.

[0010] As a further solution of the present invention: the other end of the outer cylinder is connected to the nut via a thread.

[0011] As a further solution of the present invention: at least two water outlet holes are provided, and the water outlet holes are symmetrically arranged in an even number on the side wall of the inner cylinder.

[0012] As a further solution of the present invention: a stopper block is fixedly installed between the bottom of the buffer cylinder and the outer cylinder.

[0013] As a further solution of the present invention: two stopper blocks are provided, and the stopper blocks are symmetrically arranged along the axial direction of the buffer cylinder.

[0014] As a further solution of the present invention: the upper baffle is arranged parallel to the outer cylinder and the inner cylinder.

[0015] As a further solution of the present invention: one end of the sealing ring extends between the nut and the packaging plate, the other end of the sealing ring is located between the inner tube and the outer tube, and the other end of the sealing ring is turned outward along the axial direction of the inner tube.

[0016] As a further solution of the present invention: one end of the outer cylinder and the water outlet joint are integrally formed, and the diameter of the water inlet joint is smaller than the diameter of the outer cylinder.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention cooperates with the inner cylinder and the buffer cylinder, so that the fire water flow passes through the water inlet joint, the inner cylinder, the water outlet, the buffer cylinder, the outer cylinder and the water outlet joint in sequence, thereby increasing the flow length of the water flow, and at the same time, the inner cylinder is driven to move in the buffer cylinder by water pressure, thereby increasing the time that the fire water stays in the joint. By using the delay joint of the present invention, after opening the control valve of the fire hydrant, the fire hose can be directly and quickly placed for rescue, without the need to place the water pipe back and forth and open the water valve, thereby gaining more time for fire rescue work and reducing losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the fire hose delay joint.

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the fire hose delay joint.

[0020] Figure 3 It is a schematic diagram of the structure of the inner tube in the fire hose delay joint.

[0021] Figure 4 This is a schematic diagram of the structure of the buffer cylinder in the fire hose delay joint.

[0022] In the figure: 1-water inlet joint; 2-water outlet joint; 3-outer cylinder; 4-inner cylinder; 41-bottom plate; 42-water outlet hole; 43-limiting plate; 44-guide rail; 5-buffer cylinder; 51-guide plate; 52-guide groove; 6-nut; 61-upper baffle; 62-packaging plate; 63-sealing ring; 7-spacer block. DETAILED DESCRIPTION

[0023] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present embodiment disclosure as detailed in the appended claims.

[0024] See also Figures 1-2 In an embodiment of the present invention, a fire hose delay joint includes an inlet joint 1, an outlet joint 2 and an outer tube 3, wherein the outer tube 3 is connected between the inlet joint 1 and the outlet joint 2, wherein one end of the outer tube 3 and the outlet joint 2 are integrally formed, and the diameter of the inlet joint 2 is smaller than the diameter of the outer tube 3; the outer tube 3 and the inlet joint 1 are movably connected, the other end of the outer tube 3 is provided with a thread, the other end of the outer tube 3 is movably equipped with a nut 6 through the thread, and the inlet joint 1 is movably connected to the outer tube 2 through the nut 6. The inlet joint 1, the outer tube 3 and the outlet joint 2 form a smooth water flow channel.

[0025] In an embodiment of the present invention, the fire hose delay joint also includes an inner tube 4 and a buffer tube 5, wherein the inner tube 4 is arranged in the outer tube 3, and one end of the inner tube 4 is connected to the water inlet joint 1 by threaded connection, snap connection or the like to ensure its fixed connection, and the water inlet joint 1 drives the inner tube 4 to move axially in the outer tube 3; the other end of the inner tube 4 extends into the interior of the outer tube 3, and the other end of the inner tube 4 is provided with a sealed bottom plate 41, and a plurality of water outlet holes 42 are evenly opened on the side wall of the inner tube 4 close to the bottom plate 41, and at least two water outlet holes 42 are provided, and the water outlet holes 42 are symmetrically arranged in an even number on the side wall of the inner tube 4, so that the fire water in the inner tube 4 can flow out evenly from the water outlet holes 42, thereby preventing uneven force on the inner tube 4, which causes the joint to shake violently during operation and cause damage.

[0026] In an embodiment of the present invention, a buffer cylinder 5 is sleeved on the other end of the inner cylinder 4, and the buffer cylinder 5 is fixedly installed between the inner cylinder 4 and the outer cylinder 3. Through such a structural setting, the fire water stays between the inner cylinder 4 and the outer cylinder 3 for a sufficient buffer time.

[0027] As a preferred embodiment of the present invention, a guide rail 44 located between the water outlet holes 42 is provided on the outer wall of the inner cylinder 4, and a guide plate 51 cooperating with the guide rail 44 is provided on the inner wall of the buffer cylinder 5. A guide groove 52 is provided on the guide plate 51, and the guide rail 44 slides in the guide groove 52. The sliding action of the guide rail 44 in the guide groove 52 ensures that the inner cylinder 4 can slide stably in the buffer cylinder 5.

[0028] In an embodiment of the present invention, a limit plate 43 is fixedly provided on the outer wall of the inner cylinder 4. The limit plate 43 is located outside the buffer cylinder 5 and is used to prevent the bottom plate 41 of the inner cylinder 4 from contacting the buffer cylinder 5, so that a gap is left between the bottom plate 41 of the inner cylinder 4 and the buffer cylinder 5, so that water can flow smoothly through the buffer cylinder 5 into the outer cylinder 3.

[0029] In the embodiment of the present invention, a baffle block 7 is fixedly installed between the bottom of the buffer tube 5 and the outer tube 3. Preferably, two baffle blocks 7 are provided, and the baffle blocks 7 are symmetrically arranged along the axial direction of the buffer tube 5, so that a gap is left between the buffer tube 5 and the outer tube 3, which is convenient for the fire water to flow out from the water outlet interface 2; at the same time, the baffle block 7 also serves to fix the buffer tube 5 inside the outer tube 3, ensuring that the buffer tube 5 does not shake inside the outer tube 3. Based on the above description, those skilled in the art should not be limited to the baffle blocks 7 provided, and can also fix the buffer tube 5 inside the outer tube 3 by providing a fixed bracket between the buffer tube 5 and the outer tube 3, so as to achieve the above-mentioned purpose.

[0030] In the embodiment of the present invention, an upper baffle 61 is vertically provided on the nut 6 located between the outer cylinder 3 and the inner cylinder 4, that is, the upper baffle 61 is arranged parallel to the outer cylinder 3 and the inner cylinder 4, and a packaging plate 62 is vertically provided on the upper baffle 61. A sealing ring 63 is provided between the inner cylinder 4 and the packaging plate 62, one end of the sealing ring 63 extends between the nut 6 and the packaging plate 62, and the other end of the sealing ring 63 is located between the inner cylinder 4 and the outer cylinder 3, and the other end of the sealing ring 63 is turned outward along the axial direction of the inner cylinder 4, and the inner cylinder 4 can slide freely in the sealing ring 63 along the axial direction of the inner cylinder 4 to ensure that water does not flow out from the seal.

[0031] In an embodiment of the present invention, the interface or water hose on the fire hydrant is connected through the water inlet joint 1, and the water outlet interface 2 is connected to the water spray pipe, the water flows into the inner tube 4, and then flows out through the water outlet hole 42 into the buffer tube 5. When the water in the buffer tube 5 is full, the water pressure acts on the limit plate 43, the limit plate 43 is separated from the buffer tube 5, the water flows into the outer tube 3, and then flows out through the gap between the buffer tube 5 and the outer tube 3, and flows out through the water outlet interface 2. When the pressure of the water flow continues to increase, the limit plate 43 continues to move and is blocked by the upper baffle 62. At this time, the water flow speed reaches the maximum. Through the above process, the delay process of the water flow is realized, saving the overall operation time of firefighting and rescue. The fire hose delay joint of the present invention can be used in fire-fighting equipment of various types of enterprises in the fields of chemical industry, materials, logistics, etc. When a fire hazard occurs suddenly, a single on-site personnel can directly carry out fire rescue work by opening the water valve and quickly placing the fire hose, without having to place it first, then return to open the water valve, and then return to control the water outlet for rescue work, thereby quickly carrying out rescue work and reducing losses at the fire hazard scene.

[0032] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the disclosure in the specification and examples. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the claims.

[0033] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A fire hose delay joint, comprising a water inlet joint (1), a water outlet joint (2) and an outer tube (3), wherein the outer tube (3) is connected between the water inlet joint (1) and the water outlet joint (2), and the water inlet joint (1) is movably connected to the outer tube (3) via a nut (6), characterized in that: Also includes An inner cylinder (4) is arranged inside the outer cylinder (3), one end of the inner cylinder (4) is fixedly connected to the water inlet joint (1), the other end of the inner cylinder (4) extends into the interior of the outer cylinder (3) and is provided with a sealed bottom plate (41), and a plurality of water outlet holes (42) are evenly arranged on the side wall of the inner cylinder (4) close to the bottom plate (41); A buffer cylinder (5) is fixedly mounted between the inner cylinder (4) and the outer cylinder (3), the buffer cylinder (5) being sleeved outside the other end of the inner cylinder (4), a stop plate (43) located outside the buffer cylinder (5) being fixedly mounted on the outer wall of the inner cylinder (4), a gap being left between the inner cylinder (4) and the bottom plate (41) and the buffer cylinder (5), and an upper baffle (61) parallel to the inner cylinder (4) being arranged inside the nut (6); The upper baffle plate (61) is vertically arranged on the inner side wall of the nut (6), a packaging plate (62) is vertically arranged on the upper baffle plate (61), a sealing ring (63) is arranged between the inner cylinder (4) and the packaging plate (62), and the inner cylinder (4) slides in the sealing ring (63) along the axial direction of the inner cylinder (4); A guide rail (44) located between the water outlet holes (42) is provided on the outer side wall of the inner cylinder (4), a guide plate (51) cooperating with the guide rail (44) is provided on the inner side wall of the buffer cylinder (5), a guide groove (52) is provided on the guide plate (51), and the guide rail (44) slides in the guide groove (52); A stopper block (7) is fixedly mounted between the bottom of the buffer cylinder (5) and the outer cylinder (3), and a gap is left between the buffer cylinder (5) and the outer cylinder (3).

2. The fire hose delay joint according to claim 1, characterized in that: The other end of the outer cylinder (3) is connected to the nut (6) via a thread.

3. The fire hose delay joint according to claim 1, characterized in that: At least two water outlet holes (42) are provided, and the water outlet holes (42) are symmetrically arranged in an even number on the side wall of the inner cylinder (4).

4. The fire hose delay joint according to claim 1, characterized in that: Two stopper blocks (7) are provided, and the stopper blocks (7) are symmetrically arranged along the axial direction of the buffer cylinder (5).

5. The fire hose delay joint according to claim 1, characterized in that: The upper baffle (61) is arranged parallel to the outer cylinder (3) and the inner cylinder (4).

6. The fire hose delay joint according to claim 5, characterized in that: One end of the sealing ring (63) extends between the nut (6) and the packaging plate (62), and the other end of the sealing ring (63) is located between the inner tube (4) and the outer tube (3), and the other end of the sealing ring (63) is turned outward along the axial direction of the inner tube (4).

7. The fire hose delay joint according to claim 1, characterized in that: One end of the outer cylinder (3) and the water outlet joint (2) are integrally formed, and the diameter of the water outlet joint (2) is smaller than the diameter of the outer cylinder (3).

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