Centering device and water hose connector

Abstract

The utility model discloses a centering device, which belongs to the technical field of fire-fighting equipment accessories, and adopts the technical scheme that the centering device comprises a bracket and a core, the bracket is mounted in fire-fighting equipment, a water inlet end and a water outlet end are arranged in the fire-fighting equipment, the core is arranged on the bracket, and the core is used for integrating the water flow state in the fire-fighting equipment; the core is provided with a rectification face facing the water inlet end. The centering device is wide in applicable fire-fighting equipment range, high-pressure water flow which flows disorderly in the fire-fighting equipment can be integrated, it is ensured that the water flow in the fire-fighting equipment can be conveyed to the downstream in order, impact of the high-pressure water on the fire-fighting equipment and a water hose connected with the fire-fighting equipment is reduced, displacement of the fire-fighting equipment and the water hose due to the action of the high-pressure water is avoided, and the fire-fighting equipment is protected. And the service lives of the fire-fighting equipment and upstream and downstream water hoses of the fire-fighting equipment are prolonged. The utility model further discloses a water hose connector.

Description

Technical Field

[0001] This utility model belongs to the technical field of fire-fighting equipment accessories, and specifically relates to a centering device and a hose connector. Background Technology

[0002] Currently, fire hoses are standard flexible hoses used to transport high-pressure water or flame-retardant liquids such as foam. Both ends of a fire hose are equipped with connectors (or couplings, joints), which allow connection to another hose to extend its length or to fire trucks, water cannons, water jets, and other firefighting equipment.

[0003] For example, Chinese Patent No. CN214405081U discloses an anti-loosening quick-release fastener, which includes a male connector, a retaining ring, a pressure roller, a female connector, an end cap, a support, and a snap ring mechanism. The left end of the male connector has a step, and the outer wall of the male connector has a threaded groove. The retaining ring is engaged in the threaded groove, and the pressure roller slides and is sleeved on the outer wall of the male connector. The right end of the female connector has a ring. The end cap and the ring are connected by a threaded locking connection, and the end cap has a first central hole. The support has a second central hole and a through groove. The support is built into the end cap and abuts against the ring. The second central hole is coaxial with the first central hole. The snap ring mechanism is built into the through groove. The snap ring mechanism includes a claw block and a spring plate. The claw block slides in the through groove. The inner side of the claw block has an inclined surface. The spring plate is fixed on the outer side of the claw block. The two ends of the spring plate abut against the inner wall of the end cap. The number of through grooves, claw blocks, and spring plates is the same, and there are multiple of each. The through grooves are distributed circumferentially around the second central hole.

[0004] Both the male and female connectors can be installed at the ends of the hose. When connecting the male and female connectors, simply insert the step of the male connector into the first and second center holes. During insertion, the step presses against the inclined surface and pushes the claws open, compressing the spring plate. After the step passes the claws, the spring plate returns to its original position and pushes the claws to limit the step, thus completing the connection between the male and female connectors. When disassembling the male and female connectors, first push the roller towards the step. The roller gradually presses against the inclined surface and pushes the claws open, compressing the spring plate. After the roller contacts the step, the claws are fully pushed open and can no longer limit the step, allowing the male connector to be pulled out of the female connector.

[0005] For example, Chinese Patent CN209154966U discloses a high-pressure fire hose using a high-pressure internal snap-fit ​​interface. This includes an inner ring, a retaining ring, an interface washer, and an internal snap-fit ​​interface body. The inner ring is fitted onto the outer surface of the high-pressure fire hose and secured with a fastening ring. An interface washer is snapped into the left side of the inner ring. The internal snap-fit ​​interface body is fitted onto the outer surface of the inner ring, and a retaining ring is also provided between the internal snap-fit ​​interface body and the inner ring. An internal snap-fit ​​interface is installed at both ends of the hose. In use, the hose is connected to other fire-fighting equipment through the two internal snap-fit ​​interfaces.

[0006] The two technical solutions mentioned above have the following drawbacks: Because the hoses are made of soft material, the rescue environment is highly unpredictable during firefighting and rescue operations. The hoses are not fixed to the ground, and after pressurization, the water flow within the hose mixes rapidly, forming unstable turbulence. This turbulence, acting on the hose, causes it to sway and shift, making it difficult to control. The higher the water pressure, the more difficult it is to control the hose. Furthermore, the swaying of the hose can cause wear and tear on the ground, or contact with sharp objects or corrosive liquids, affecting the hose's wall thickness. In addition, multiple hoses are connected via joints, and the water pressure within the soft hose is not uniform, especially at bends and joints. Unstable water flow in different areas further exacerbates the swaying and shifting of the hose, affecting the service life of the hose and joints. During the shifting process, the joints may also detach unexpectedly, impacting the efficiency of firefighting and rescue operations. Utility Model Content

[0007] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a centering device. The first technical problem to be solved by this utility model is: how to stabilize the water flow state inside fire-fighting equipment.

[0008] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a water hose interface. The second technical problem to be solved by this utility model is: how to stabilize the water flow state within the water hose interface.

[0009] The first technical objective of this utility model can be achieved through the following technical solution:

[0010] A centering device includes a bracket and a core. The bracket is installed inside a fire-fighting device, which has an inlet and an outlet. The core is disposed on the bracket and is used to integrate the water flow within the fire-fighting device. The core has a flow-rectifying surface facing the inlet.

[0011] Through the above technical solution, the bracket is installed inside the fire-fighting equipment, which can be a water distributor, hose connector, water stopper, fire monitor, water collector, or other fire-fighting equipment. The hose is connected to the fire-fighting equipment. When the high-pressure water flow in the hose passes through the fire-fighting equipment, the core and straightening surface work together to guide and integrate the water flow passing through the core. Even if the water flow in the hose is pressurized, this centering device can integrate the disorderly flowing high-pressure water in the fire-fighting equipment, ensuring that the water flow downstream of the fire-fighting equipment can flow in an orderly manner, reducing the impact of high-pressure water on the fire-fighting equipment and the hose connected to the fire-fighting equipment, preventing the fire-fighting equipment and hose from being displaced or worn by the high-pressure water, and improving the service life and safety of the fire-fighting equipment and upstream and downstream hoses.

[0012] In the aforementioned centering device, the rectifying surface is arc-shaped. The rectifying surface guides the disordered flow of high-pressure water to flow orderly downstream of the core. The arc-shaped rectifying surface can ensure the guiding effect on the fluid without increasing the resistance of the water flow.

[0013] In the aforementioned centering device, the support includes ribs, and the core is connected to the ribs. The core is positioned by the ribs, thereby ensuring its position within the fire-fighting equipment; moreover, the ribs can also divert water flow to assist the core in separating disordered water flows.

[0014] In the aforementioned centering device, at least one rib is provided. Multiple ribs not only improve the positioning effect on the core, but also evenly divide the disordered water flow into multiple streams, thereby further changing the flow state of the disordered water flow.

[0015] In the aforementioned centering device, the support further includes a connecting part, which is connected to the reinforcing rib and the fire-fighting equipment. The core is coaxially arranged with the connecting part. Disordered water flow is guided by the rectifying surface, thereby squeezing the water flow towards the inner wall of the fire-fighting equipment, allowing the water flow to enter the downstream of the core in an orderly manner.

[0016] In the aforementioned centering device, the connecting portion has an inner wall that is flush with the inner wall of the fire-fighting equipment. This reduces the impact on the water flow.

[0017] In the aforementioned centering device, the connecting part is integrally formed with the fire-fighting equipment or is detachably connected. Depending on the type of fire-fighting equipment, different connection methods can be selected between the connecting part and the fire-fighting equipment.

[0018] In the aforementioned centering device, the inner end of the rib points towards the center of the connecting part, and a flow-rectifying hole is provided between the connecting part and the core for water flow. Each flow-rectifying hole can divide the disordered water flow, and the gap for water flow at the flow-rectifying hole is reduced by the guidance of the flow-rectifying surface, which can further increase the flow velocity at the flow-rectifying hole to avoid affecting the water pressure inside the fire-fighting equipment.

[0019] In the aforementioned centering device, a cone is provided on the side of the core facing the water outlet. After the water flows over the core, it re-merges into a single stream. The cone prevents the merged water streams from violently mixing again and becoming turbulent, ensuring the stability of the water flow downstream of the core.

[0020] The second technical objective of this utility model can be achieved through the following technical solution:

[0021] A hose connector includes a first connector, a second connector, and the aforementioned centering device. The first connector and the second connector are adapted to each other and detachably connected. The centering device is disposed within the first connector or the second connector.

[0022] Through the above technical solution, Interface 1 and Interface 2 are compatible. Interface 1 and Interface 2 are installed at both ends of the water hose, and new Interface 1 and Interface 2 are also installed on other supporting fire-fighting equipment. The water hose is connected to the water distributor, fire nozzle, fire monitor, fire truck or fire hydrant and other fire-fighting equipment through Interface 1 and Interface 2. After water is supplied in the water hose, the high-pressure water is transported to the destination through the water hose. When the fluid in the water hose passes through a centering device, the fluid can maintain a stable flow state and be transported downstream, avoiding the water hose, Interface 1 and Interface 2 from swinging or displacing due to the disordered flow of high-pressure water, thereby ensuring the stability of water pressure in the entire water hose pipeline and preventing Interface 1 and Interface 2 from accidentally detaching due to displacement.

[0023] In summary, the advantages of this utility model compared to the prior art are as follows:

[0024] This centering device integrates the disordered high-pressure water flow within fire-fighting equipment, ensuring that the water flow within the equipment can be orderly delivered downstream. This reduces the impact of high-pressure water on the fire-fighting equipment and the hoses connected to it, preventing displacement of the equipment and hoses due to the high-pressure water, and extending the service life of the equipment and the hoses upstream and downstream. Furthermore, the core's reasonable structural design does not reduce water flow velocity or pressure, providing better stability to the water flow pattern. Multiple processing methods are available, allowing selection of the appropriate method based on the actual processing equipment, thus reducing production costs. This centering device is applicable to a wide range of fire-fighting equipment. When installed in interface one or interface two, it ensures stable pressure as the fluid flows through interface one and interface two, guaranteeing stable fluid delivery within the hoses after using interface one or interface two, and preventing accidental detachment of interface one or interface two due to hose or hose interface displacement. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of the centering device and fire-fighting equipment after assembly (the arrows indicate the direction of water flow).

[0026] Figure 2 This is a schematic diagram of the centering device in the embodiment;

[0027] Figure 3 for Figure 2 A cross-sectional view;

[0028] Figure 4 This is a schematic diagram of the water hose interface in the embodiment;

[0029] Figure 5 This is a schematic diagram of another type of hose connector in the embodiment.

[0030] Attached reference numerals: 1. Firefighting equipment; 11. Water inlet; 12. Water outlet;

[0031] 100. Bracket; 110. Rib; 120. Connecting part; 121. Inner side wall; 130. Rectifying hole;

[0032] 200. Core; 210. Rectifying surface; 220. Conical head; 221. Cylindrical outer wall; 222. Point;

[0033] 300, Interface 1; 400, Interface 2. Detailed Implementation

[0034] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0035] A centering device, such as Figures 1 to 3 As shown, the device includes a bracket 100 and a core 200. The bracket 100 is installed inside the fire-fighting equipment 1, which has an inlet end 11 and an outlet end 12. The core 200 is disposed on the bracket 100 and is used to integrate the water flow state inside the fire-fighting equipment 1. The core 200 has a flow-rectifying surface 210 facing the inlet end 11, which is preferably arc-shaped or conical.

[0036] Firefighting equipment 1 can be a hose connector, water distributor, water stopper, fire monitor, water gun, water collector, or fire hydrant, etc.

[0037] The support 100 includes a rib 110, and the core 200 is connected to the rib 110. At least one rib 110 is provided. The rib 110 is connected to the fire-fighting equipment 1 by a detachable connection or by integral molding. In at least one embodiment, the rib 110 is inclined towards the water inlet end 11 or the water outlet end 12.

[0038] It should be noted that the core 200 and the rib 110 can also be connected by a detachable connection or by integral molding.

[0039] like Figure 1 , Figure 2 As shown, the bracket 100 also includes a connecting portion 120, which is connected to the outer end of the reinforcing bar 110. The connecting portion 120 is used to connect with the fire-fighting equipment 1. The core 200 and the connecting portion 120 are coaxial. The connecting portion 120 has an inner sidewall 121, which is flush with the inner wall of the fire-fighting equipment 1. In some embodiments, the connecting portion 120 is integrally formed with the fire-fighting equipment 1 or is detachably connected. The detachable connection methods include threaded connection and snap-fit ​​connection.

[0040] The inner end of the rib 110 points to the central axis of the connecting part 120. There is a flow-rectifying hole 130 between the connecting part 120 and the core 200 for water to flow through. The flow-rectifying hole 130 is divided into more than one evenly by the rib 110.

[0041] like Figure 3 As shown, a cone head 220 is provided on the side of the core 200 facing the water outlet 12. The cone head 220 has a cylindrical outer wall 221 and a pointed tip 222. The cylindrical outer wall 221 is flush with the outer wall of the core 200, and the pointed tip 222 is coaxial with the core 200.

[0042] The working principle of this utility model is as follows:

[0043] The bracket 100 is installed inside the fire-fighting equipment 1, with the straightening surface 210 facing the water inlet 11, thereby achieving the positioning of this centering device. The water hose is connected to the fire-fighting equipment 1. When the disordered water, which is violently mixed in the water hose, flows through the fire-fighting equipment 1, the straightening surface 210 and the core 200 squeeze the disordered water flow towards the inner wall of the fire-fighting equipment 1. The ribs 110 divide the water flow into multiple streams. Since this centering device occupies the space inside the fire-fighting equipment 1, it is equivalent to reducing the channel through which the water supply flows, thereby increasing the water flow velocity in the straightening hole 130 and improving the integration effect of the disordered water flow. After the integrated water flow passes through the core 200, it is guided by the cone head 220, so that the high-pressure water at the front end of the core 200 can quickly flow into the rear end of the core 200, ensuring the high-pressure water flow velocity while also stabilizing the water pressure in the fire-fighting equipment 1 and the water hose connected to the fire-fighting equipment 1.

[0044] Even if the water flow in the hose is pressurized due to rescue needs, this centering device can stabilize the water flow, reduce the impact of disordered water on fire-fighting equipment 1 and the hose connected to fire-fighting equipment 1, and prevent fire-fighting equipment 1 and hose from being displaced or swaying due to high-pressure water.

[0045] like Figure 4 , Figure 5 As shown, a water hose interface includes interface 300, interface 400 and the aforementioned centering device. Interface 300 and interface 400 are adapted to each other and detachably connected. The centering device is disposed in interface 300 or interface 400.

[0046] Specifically, the bracket 100 can be placed at any position within the first interface 300 or the second interface 400, with the rectifying surface 210 facing the water inlet 11. In some embodiments, the bracket 100 is connected to the inner wall of the first interface 300 and close to the second interface 400, or the bracket 100 is connected to the inner wall of the second interface 400 and close to the first interface 300.

[0047] Interface 1 (300) and Interface 2 (400) are both existing technologies. Specifically, they can adopt the male and female connectors disclosed in a fire hose coupling (CN211798476U) under the applicant's name, or the connector body 1 and connector body 2 disclosed in an internally fastened fire hose coupling (CN216676807U), or the two conventional hose interfaces disclosed in the background technology.

[0048] The working principle of a hose coupling:

[0049] According to the usual practice of fire-fighting equipment, Interface 1 300 and Interface 2 400 are used as standard parts for connecting various fire-fighting equipment. They are installed at both ends of the water hose respectively. At the same time, new Interface 1 300 and Interface 2 400 are also installed at both ends of other supporting fire-fighting equipment. The water hose is connected to the water distributor, fire nozzle, fire monitor, fire truck or fire hydrant and other fire-fighting equipment through Interface 1 300 and Interface 2 400 to form a complete water supply pipeline. After water is supplied to the water hose, the high-pressure water is transported to the destination through the water hose.

[0050] Each time the fluid in the water hose passes through a centering device, the high-pressure water remains stable at the centering device before being transported downstream, thus ensuring the stability of the water flow in the entire water supply pipeline and preventing the water hose, interface 1 300, and interface 2 400 from swaying or shifting due to the disordered water flow.

[0051] The specific embodiments described herein are merely illustrative examples of the spirit of this utility model; those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or adopt similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A centering device, characterized in that: The device includes a bracket (100) and a core (200). The bracket (100) is installed inside the fire-fighting equipment (1). The fire-fighting equipment (1) has a water inlet (11) and a water outlet (12). The core (200) is disposed on the bracket (100). The core (200) is used to integrate the water flow state inside the fire-fighting equipment (1). The core (200) has a flow straightening surface (210) facing the water inlet (11).

2. The centering device according to claim 1, characterized in that: The rectifying surface (210) is arc-shaped.

3. The centering device according to claim 1, characterized in that: The support (100) includes ribs (110), and the core (200) is connected to the ribs (110).

4. The centering device according to claim 3, characterized in that: At least one rib (110) is provided.

5. The centering device according to claim 3, characterized in that: The bracket (100) also includes a connecting part (120), which is connected to the reinforcing bar (110) and the fire-fighting equipment (1). The core (200) is coaxially arranged with the connecting part (120).

6. The centering device according to claim 5, characterized in that: The connecting part (120) has an inner wall (121) that is flush with the inner wall of the fire-fighting equipment (1).

7. The centering device according to claim 5, characterized in that: The connecting part (120) is integrally formed with the fire-fighting equipment (1) or can be detachably connected.

8. The centering device according to claim 5, characterized in that: The inner end of the rib (110) points to the center of the connecting part (120), and there is a flow-rectifying hole (130) between the connecting part (120) and the core (200) for water to flow through.

9. The centering device according to any one of claims 1-8, characterized in that: The core (200) is provided with a cone (220) on the side facing the water outlet (12).

10. A hose connector, characterized in that: The hose interface includes interface one (300), interface two (400) and a centering device according to any one of claims 1-9, wherein interface one (300) is adapted to and detachably connected to interface two (400), and the centering device is disposed in interface one (300) or interface two (400).

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