Novel fire-fighting lance

Abstract

The utility model discloses a novel fire-fighting lance, which belongs to the technical field of fire-fighting equipment, and adopts the technical scheme that the novel fire-fighting lance comprises a fire-fighting lance main body, a liner tube is arranged in the fire-fighting lance main body in a sliding manner, a sleeve is rotationally arranged on the fire-fighting lance main body and can be close to and far away from the outer end of the liner tube, and a switching sleeve is arranged on the outer side of the sleeve in a sliding manner; the switching sleeve comprises a supporting ring sleeve and a rubber sleeve, a threaded structure is arranged in the supporting ring sleeve, the supporting ring sleeve is sleeved with the rubber sleeve, the rubber sleeve covers the outer side of the threaded structure, the rubber sleeve is connected with the supporting ring sleeve in a clamped mode, the switching sleeve of the fire-fighting lance comprises the supporting ring sleeve and the rubber sleeve, and the rubber sleeve is connected with the supporting ring sleeve in a clamped mode. Physical isolation is directly formed through the rubber sleeve, external impact is absorbed, the threaded structure is protected, and the beating resistance of the switching sleeve is improved, so that the number of parts is reduced, the structure is simplified, the rubber sleeve and the supporting ring sleeve can be quickly assembled without special equipment, production and assembly are facilitated, and the production efficiency can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection equipment technology, and specifically relates to a new type of fire hose. Background Technology

[0002] A fire hose is a spray nozzle that uses water as the extinguishing agent and is carried and operated by one or more people. Fire hoses can spray water onto burning materials in the desired shape and are used for fire fighting and auxiliary cooling during firefighting.

[0003] Chinese Patent No. CN222056223U discloses a multi-purpose fire hose reel, belonging to the field of fire equipment technology. Its key technical features include: a hose body, a liner, a sleeve, and a switching sleeve. The hose body has a water outlet channel, and a guide groove is provided on the hose body. The liner is slidably disposed within the water outlet channel. A baffle is provided within the hose body near the outer end of the liner, and a water outlet gap exists between the outer end of the liner and the baffle, allowing water or foam to pass through. The sleeve is rotatably disposed on the hose body. The sleeve is connected to the guide groove and can move along the guide groove to approach and move away from the outer end of the liner. The switching sleeve is slidably disposed outside the sleeve and has an air inlet. When the switching sleeve moves to the outer end of the sleeve, it can spray foam.

[0004] The above technical solution has at least the following drawbacks: the switching sleeve of the fire hose nozzle is formed by the combination of multiple components, including a support sleeve body and a rubber ring at the front end. In order to improve the impact resistance of the switching sleeve, a metal ring is fitted on the outside of the support sleeve body, and the support sleeve body has a threaded structure. The metal ring protects the threaded connection. However, during the production of the switching sleeve, the metal ring and the support sleeve body need to be assembled and fixed by special equipment. Not only is the processing and assembly cost high, but the metal ring itself also needs to be treated with anti-corrosion, making the process complicated. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a new type of fire hose. The technical problem to be solved by this utility model is: how to simplify the structure and improve production efficiency.

[0006] The above-mentioned technical objective of this utility model can be achieved through the following technical solution: A novel fire hose nozzle includes a fire hose nozzle body, a liner is slidably disposed inside the fire hose nozzle body, a sleeve is rotatably disposed on the fire hose nozzle body, the sleeve can approach and move away from the outer end of the liner, a switching sleeve is slidably disposed on the outer side of the sleeve, the switching sleeve includes a support ring sleeve and a rubber sleeve, the support ring sleeve has a threaded structure inside, the rubber sleeve is sleeved on the outer side of the support ring sleeve, and the rubber sleeve covers the outer side of the threaded structure, the rubber sleeve is engaged with the support ring sleeve.

[0007] In the aforementioned novel fire hose, the outer wall of the support ring sleeve is provided with a positioning protrusion, and the inner wall of the rubber sleeve is provided with a positioning ring groove, wherein the positioning protrusion is engaged with the positioning ring groove.

[0008] In the aforementioned novel fire hose, the outer end of the rubber sleeve is bent to form an annular protrusion, and the end of the support ring sleeve is provided with an annular groove, with the annular protrusion engaging with the annular groove.

[0009] In the aforementioned novel fire hose, the outer wall of the support ring sleeve is provided with a limiting protrusion, and the end of the rubber sleeve abuts against the end face of the limiting protrusion.

[0010] In the aforementioned novel fire hose reel, the positioning protrusion ring is provided with an arc-shaped guide surface.

[0011] In the aforementioned novel fire hose, an annular groove is formed on the side wall of the fire hose body relative to the liner.

[0012] In the aforementioned novel fire hose reel, the cross-section of the annular groove is trapezoidal, and the annular groove gradually increases in size from its bottom to its opening.

[0013] In the aforementioned novel fire hose, the sleeve has an annular groove on its side wall relative to the main body of the fire hose.

[0014] In the aforementioned novel fire hose reel, the cross-section of the second annular groove is trapezoidal, and the second annular groove gradually increases in size from its bottom to its opening.

[0015] In the aforementioned novel fire hose, the outer wall of the rubber sleeve is provided with several force-applying grooves, and the outer wall of the rubber sleeve is provided with several raised marks of different shapes.

[0016] In summary, the beneficial effects of this utility model compared to the prior art are as follows:

[0017] The switching sleeve includes a support ring sleeve and a rubber sleeve. The rubber sleeve is snapped into the support ring sleeve and is fitted on the outside of the support ring sleeve, covering the outside of the threaded structure of the support ring sleeve. The rubber sleeve directly forms physical isolation, absorbing external impacts and protecting the threaded structure, thereby improving the switching sleeve's impact resistance. This reduces the number of parts, simplifies the structure, and allows for quick assembly of the rubber sleeve and support ring sleeve without the need for special equipment, facilitating production and assembly and effectively improving production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0019] Figure 2This is a cross-sectional view of an embodiment;

[0020] Figure 3 for Figure 2 Enlarged view of part A;

[0021] Figure 4 for Figure 2 Enlarged view of part B;

[0022] Figure 5 This is a partial cross-sectional schematic diagram of an embodiment.

[0023] Reference numerals in the attached drawings: 1. Fire nozzle body; 2. Liner; 3. Sleeve; 4. Switching sleeve; 41. Support ring sleeve; 42. Rubber sleeve; 5. Positioning protrusion; 6. Positioning ring groove; 7. Annular protrusion; 8. Annular groove; 9. Limiting protrusion; 10. Arc-shaped guide surface; 11. Annular groove one; 12. Annular groove two; 13. Force application groove; 14. Protrusion mark. Detailed Implementation

[0024] 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.

[0025] A new type of fire hose, such as Figures 1-5 As shown, the fire hose includes a fire nozzle body 1, a liner 2 slidably disposed inside the fire nozzle body 1, and a sleeve 3 rotatably disposed on the fire nozzle body 1. The sleeve 3 can approach and move away from the outer end of the liner 2, and a switching sleeve 4 is slidably disposed on the outer side of the sleeve 3. It should be noted that the specific structure of the fire nozzle body 1, the liner 2, and the sleeve 3, how the liner 2 slides, how the sleeve 3 rotates, how the switching sleeve 4 slides, and the basic operating principle of the fire hose are all existing technologies. For details, please refer to the multi-purpose fire hose disclosed in Chinese Patent No. CN222056223U, which will not be elaborated further.

[0026] The switching sleeve 4 includes a support ring sleeve 41 and a rubber sleeve 42. The support ring sleeve 41 has a threaded structure inside. The rubber sleeve 42 is sleeved on the outside of the support ring sleeve 41 and covers the outside of the threaded structure. The rubber sleeve 42 forms a physical isolation on the outside of the support ring sleeve and absorbs external impact through the elastic buffering effect of the rubber material, thus protecting the threaded structure and improving the impact resistance of the switching sleeve 4.

[0027] The rubber sleeve 42 is engaged with the support ring sleeve 41. Specifically, the outer wall of the support ring sleeve 41 is provided with a positioning protrusion 5. In this embodiment, there are two positioning protrusions 5, which are spaced apart. The inner wall of the rubber sleeve 42 is provided with a positioning ring groove 6. There are two positioning ring grooves 6, which are spaced apart. The positioning protrusions 5 and the positioning ring grooves 6 correspond one-to-one. The positioning protrusions 5 and the positioning ring grooves 6 are adapted to each other. The positioning protrusions 5 are engaged with the corresponding positioning ring grooves 6. The engagement between the positioning protrusions 5 and the positioning ring grooves 6 ensures the relative stability of the rubber sleeve 42 and the support ring sleeve 41.

[0028] Furthermore, the outer end of the rubber sleeve 42 is bent to form an annular protrusion 7, and the end of the support ring sleeve 41 is provided with an annular groove 8. The annular protrusion 7 and the annular groove 8 are adapted to each other, and the annular protrusion 7 is engaged with the annular groove 8, thereby further ensuring the relative stability of the rubber sleeve 42 and the support ring sleeve 41.

[0029] When installing the rubber sleeve 42, simply place the rubber sleeve 42 onto the outside of the support ring sleeve 41, and insert the annular protrusion 7 into the annular groove 8 and the positioning protrusion 5 into the positioning ring groove 6. The operation is simple and the installation is convenient.

[0030] It should be further explained that, compared with the prior art which uses a metal ring to improve the impact resistance of the switching sleeve 4, this embodiment adopts the solution of directly using the rubber sleeve 42, eliminating the metal ring, thereby reducing the number of parts and simplifying the structure. Moreover, the rubber sleeve 42 and the support ring sleeve 41 are snapped together, and the assembly of the rubber sleeve 42 and the support ring sleeve 41 can be completed quickly without the need for special equipment, which facilitates production assembly and can effectively improve production efficiency.

[0031] The outer wall of the support ring sleeve 41 is provided with a limiting protrusion 9. The end of the rubber sleeve 42 abuts against the end face of the limiting protrusion 9 to limit the rubber sleeve 42 and ensure the relative positional relationship between the rubber sleeve 42 and the support ring sleeve 41 is stable. This allows for quick engagement of the annular protrusion 7 and the annular groove 8, as well as engagement of the positioning protrusion 5 and the positioning groove 6, making the installation of the rubber sleeve 42 more convenient.

[0032] The positioning protrusion 5 is provided with an arc-shaped guide surface 10, which guides the rubber sleeve 42, making it easier for the positioning protrusion 5 to engage with the positioning ring groove 6. This makes it easier and faster to install the rubber sleeve 42, further improving efficiency.

[0033] A ring groove 11 is provided on the side wall of the fire nozzle body 1 relative to the liner 2, so as to reduce the contact area between the liner 2 and the fire nozzle body 1, and reduce the wear caused by the liner 2 contacting the fire nozzle body 1 when it moves.

[0034] Furthermore, the cross-section of the annular groove 11 is trapezoidal, and the annular groove 11 gradually increases from its bottom to its opening, thereby minimizing the contact area between the liner 2 and the fire nozzle body 1, and minimizing the impact on the strength of the liner 2.

[0035] The sleeve 3 has an annular groove 12 on its side wall relative to the fire nozzle body 1, thereby reducing the contact area between the sleeve 3 and the fire nozzle body 1 and reducing the wear caused by the sleeve 3 contacting the fire nozzle body 1 when it moves.

[0036] Furthermore, the cross-section of the second annular groove 12 is trapezoidal, and the second annular groove 12 gradually increases from its bottom to its opening, thereby minimizing the contact area between the sleeve 3 and the fire nozzle body 1, and minimizing the impact on the strength of the sleeve 3.

[0037] The outer wall of the rubber sleeve 42 is provided with several force-applying grooves 13, which can be used as force-applying points to facilitate user operation. The outer wall of the rubber sleeve 42 is provided with several raised marks 14 of different shapes to facilitate user identification and improve the user experience.

[0038] 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 novel fire hose reel, characterized in that: The device includes a fire nozzle body (1), a liner (2) slidably disposed inside the fire nozzle body (1), a sleeve (3) rotatably disposed on the fire nozzle body (1), the sleeve (3) being able to approach and move away from the outer end of the liner (2), a switching sleeve (4) slidably disposed on the outer side of the sleeve (3), the switching sleeve (4) including a support ring sleeve (41) and a rubber sleeve (42), the support ring sleeve (41) having a threaded structure inside, the rubber sleeve (42) being sleeved on the outer side of the support ring sleeve (41), and the rubber sleeve (42) covering the outer side of the threaded structure, the rubber sleeve (42) being engaged with the support ring sleeve (41).

2. The novel fire hose reel according to claim 1, characterized in that: The outer side wall of the support ring sleeve (41) is provided with a positioning protrusion (5), and the inner side wall of the rubber sleeve (42) is provided with a positioning ring groove (6), and the positioning protrusion (5) is engaged with the positioning ring groove (6).

3. A novel fire hose reel according to claim 1 or 2, characterized in that: The outer end of the rubber sleeve (42) is bent to form an annular protrusion (7), and the end of the support ring sleeve (41) is provided with an annular groove (8), and the annular protrusion (7) is engaged with the annular groove (8).

4. A novel fire hose reel according to claim 3, characterized in that: The outer side wall of the support ring sleeve (41) is provided with a limiting protrusion (9), and the end of the rubber sleeve (42) abuts against the end face of the limiting protrusion (9).

5. A novel fire hose reel according to claim 2, characterized in that: The positioning protrusion (5) is provided with an arc-shaped guide surface (10).

6. A novel fire hose reel according to any one of claims 1, 2, or 5, characterized in that: The fire hose body (1) has an annular groove (11) on its side wall relative to the liner (2).

7. A novel fire hose reel according to claim 6, characterized in that: The cross-section of the annular groove (11) is trapezoidal, and the annular groove (11) gradually increases in size from its bottom to its opening.

8. A novel fire hose reel according to any one of claims 1, 2, or 5, characterized in that: The sleeve (3) has an annular groove (12) on its side wall relative to the fire nozzle body (1).

9. A novel fire hose reel according to claim 8, characterized in that: The cross-section of the second annular groove (12) is trapezoidal, and the second annular groove (12) gradually increases from its bottom to its opening.

10. A novel fire hose reel according to any one of claims 1, 2, or 5, characterized in that: The outer wall of the rubber sleeve (42) is provided with several force-applying grooves (13), and the outer wall of the rubber sleeve (42) is provided with several raised marks (14) of different shapes.

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