Water-based fire extinguisher sealing structure

Abstract

The utility model relates to the technical field of fire-fighting equipment, in particular to a water-based fire extinguisher sealing structure, a valve seat comprises an inward extending section and a bearing section connected above the inward extending section, the diameter of the bearing section is larger than that of the inward extending section, the inward extending section extends into a bottle opening of a bottle body, the bearing section is positioned above the bottle opening and is supported by the bottle opening, and the valve seat is connected with a sealing assembly. The sealing assembly comprises a sealing fixing ring arranged on the inner extending section in a sleeving mode. The prefabricated soft capsule is located in the bottle body, and a prefabricated capsule opening of the prefabricated soft capsule is located in the bottle opening. The interior of the bottle opening is a necking-down stepped through hole, the stepped through hole comprises a large-aperture section and a medium-aperture section located below the large-aperture section, the joint between the large-aperture section and the medium-aperture section is a first horizontal section, and the sealing fixing ring is located on the large-aperture section; the sealing fixing ring presses the opening of the prefabricated capsule to the inner wall face of the large-aperture section and the top wall face of the first horizontal section. The problem that a prefabricated capsule opening of a prefabricated soft capsule cannot be firmly fixed through an opening of a bottle body can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting equipment, in particular to a sealing structure of a water-based fire extinguisher. Background Art

[0002] As an important fire-fighting equipment, fire extinguishers are widely used in various places to extinguish initial fires and prevent the spread of fires. Water-based fire extinguishers are a common type of fire extinguishers. However, during the use of water-based fire extinguishers, due to changes in internal pressure and the action of chemical substances, the inner tank often corrodes. The inner tank corrosion may not only cause leakage of water-based fire extinguishing agents, but also affect the normal operation and safety performance of water-based fire extinguishers. One of the traditional methods to solve the problem of inner tank corrosion is to use rotational molding technology. First, the inner wall of the bottle is cleaned and dried, and then the rotational molding pellets are placed. Then the bottle is sealed, and the plastic is melted and attached to the inner wall of the bottle by heating and rolling. Although this method can form a protective layer, it has high energy consumption, low working efficiency, and a complicated operation process, which is not conducive to large-scale production.

[0003] Another method is to put a prefabricated soft capsule in the bottle body. The prefabricated soft capsule is in a contracted state at the beginning and the prefabricated capsule mouth of the prefabricated soft capsule is located at the opening of the bottle body. When the fire extinguishing agent is poured into the prefabricated soft capsule, the prefabricated soft capsule will be expanded and store the fire extinguishing agent, and the fire extinguishing agent will not contact the bottle body. Compared with the rotational molding technology, this method does not need to heat the bottle body, so the energy consumption is low and the working efficiency is high. However, in the process of pouring the fire extinguishing agent into the prefabricated soft capsule, the fire extinguishing agent will impact the prefabricated soft capsule, and the soft capsule is relatively soft. The opening of the bottle body is difficult to fix the prefabricated capsule mouth of the soft capsule firmly. Under the impact of the fire extinguishing agent, the prefabricated soft capsule may be completely rushed into the bottle body, and the fire extinguishing agent poured in later will directly contact the bottle body. The above problems have not been solved, making it difficult to promote prefabricated soft capsule type water-based fire extinguishers. For this reason, it is necessary to design a water-based fire extinguisher sealing structure to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a sealing structure for a water-based fire extinguisher, aiming to solve the problem in the prior art that it is difficult to firmly fix the prefabricated capsule mouth of the prefabricated soft capsule at the opening of the bottle body of the water-based fire extinguisher.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a sealing structure of a water-based fire extinguisher, comprising a bottle body, a valve seat and a prefabricated soft capsule capable of expansion, the valve seat comprising an inner extension section and a supporting section connected above the inner extension section, the diameter of the supporting section being larger than the inner extension section, the inner extension section extending into the bottle mouth of the bottle body, the supporting section being located above the bottle mouth and supported by the bottle mouth, the valve seat being connected to a sealing assembly, the sealing assembly comprising a sealing fixing ring sleeved on the inner extension section; the prefabricated soft capsule is located inside the bottle body and the prefabricated capsule mouth of the prefabricated soft capsule is located inside the bottle mouth; the inside of the bottle mouth The invention discloses a stepped perforation with a constricted shape, comprising a large-diameter section and a medium-diameter section located below the large-diameter section, wherein the connection between the large-diameter section and the medium-diameter section is a first horizontal section, and a sealing fixing ring is located in the large-diameter section; in the horizontal direction, the inward-extending section, the sealing fixing ring, the prefabricated capsule opening and the large-diameter section are arranged in sequence from the inside to the outside, and in the vertical direction, the supporting section, the sealing fixing ring, the prefabricated capsule opening and the first horizontal section are arranged in sequence from the top to the bottom, so that the sealing fixing ring presses the prefabricated capsule opening against the inner wall surface of the large-diameter section and the top wall surface of the first horizontal section.

[0006] Furthermore, a small aperture section is arranged below the medium aperture section, and a connection between the medium aperture section and the small aperture section is an inclined section.

[0007] Furthermore, the prefabricated capsule mouth comprises a large sleeve, a middle sleeve and a small sleeve which are arranged in sequence from top to bottom, the connection between the large sleeve and the middle sleeve is the second horizontal section, and the small sleeve is connected to the capsule body of the prefabricated soft capsule; the outer wall surface of the large sleeve abuts against the inner wall surface of the large aperture section, the outer wall surface of the middle sleeve abuts against the inner wall surface of the middle aperture section, and the top wall surface of the first horizontal section abuts against the bottom wall surface of the second horizontal section.

[0008] Furthermore, an upper small-diameter section is arranged above the supporting section, and the sealing assembly also includes a locking nut, one end of which is sleeved on the upper small-diameter section and tightly presses the supporting section, and the other end is threadedly connected to the outer wall of the bottle mouth.

[0009] Furthermore, the inner thread of the inner extension section is connected with a spring seat, and the spring seat is provided with a sealing convex ring, and the sealing convex ring abuts against the bottom surface of the inner extension section.

[0010] Furthermore, an injection valve core is slidably connected inside the valve seat, an injection valve core sealing ring is arranged at the upper end of the injection valve core, and an injection valve sealing ring is arranged at the lower end of the injection valve core.

[0011] Furthermore, the inner wall of the valve seat is provided with a guide inclined section, and the sealing ring of the injection valve is provided with a guide fillet, and the guide fillet abuts against the guide inclined section.

[0012] Furthermore, a spring is sleeved on the lower end of the injection valve core, and the spring abuts against a spring seat.

[0013] Furthermore, the inner thread of the spring seat is connected with a siphon tube.

[0014] Furthermore, a nozzle is threadedly connected to one side of the valve seat.

[0015] Compared with the prior art, the sealing structure of a water-based fire extinguisher provided by the utility model effectively compresses the mouth of the prefabricated capsule by the sealing fixing ring against the inner wall surface of the large-aperture section and the top wall surface of the first horizontal section, so that the mouth of the prefabricated capsule can be firmly fixed on the bottle mouth, thereby preventing the prefabricated soft capsule from being impacted by the fire extinguishing agent or falling due to improper operation, greatly improving the stability and continuity of production, and reducing production interruptions and defective rates caused by the falling of the prefabricated soft capsule. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of part A;

[0018] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part B.

[0019] Description of reference numerals:

[0020] 1. Bottle body; 11. Bottle mouth; 12. Large aperture section; 13. Medium aperture section; 14. Small aperture section; 15. First horizontal section; 16. Inclined section; 2. Valve seat; 21. Inward extension section; 22. Support section; 23. Upper small diameter section; 24. Guide inclined section; 3. Prefabricated soft capsule; 31. Prefabricated capsule mouth; 311. Large sleeve; 312. Medium sleeve; 313. Small sleeve; 314. Second horizontal section; 32. Capsule body; 4. Sealing fixing ring; 5. Locking nut; 6. Spring seat; 61. Sealing convex ring; 7. Injection valve core; 71. Injection valve core sealing ring; 72. Injection valve sealing ring; 73. Guide fillet; 8. Spring; 9. Siphon; 10. Spray pipe. DETAILED DESCRIPTION

[0021] The present invention is described in detail below in conjunction with specific embodiments.

[0022] In the present utility model, unless otherwise clearly specified and limited, when terms such as "set on", "connected", and "connected" appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or connected through one or more intermediate media. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. The directional words that appear in the present utility model are to better illustrate the characteristics of the features and the relationship between the features. It should be understood that when the placement direction of the present utility model changes, the characteristics of the features and the direction of the relationship between the features also change accordingly. Therefore, the directional words do not constitute an absolute limitation on the characteristics of the features and the relationship between the features in space, but only play a relative limitation role.

[0023] The utility model provides a water-based fire extinguisher sealing structure, such as Figures 1 to 3 As shown, it includes a bottle body 1, a valve seat 2 and a prefabricated soft capsule 3 that can expand, the valve seat 2 includes an inward extension section 21 and a supporting section 22 connected to the upper part of the inward extension section 21, the diameter of the supporting section 22 is larger than the inward extension section 21, the inward extension section 21 extends into the bottle mouth 11 of the bottle body 1, the supporting section 22 is located above the bottle mouth 11 and supported by the bottle mouth 11, the valve seat 2 is connected to a sealing component, and the sealing component includes a sealing fixing ring 4 sleeved on the inward extension section 21; the prefabricated soft capsule 3 is located inside the bottle body 1 and the prefabricated capsule mouth 31 of the prefabricated soft capsule 3 is located inside the bottle mouth 11; the inside of the bottle mouth 11 is a stepped perforation with a constricted mouth shape, and the stepped perforation is formed by a stepped hole. The ladder-shaped perforation includes a large-aperture section 12 and a medium-aperture section 13 located below the large-aperture section 12. The connection between the large-aperture section 12 and the medium-aperture section 13 is a first horizontal section 15, and the sealing fixing ring 4 is located in the large-aperture section 12. In the horizontal direction, the inward extension section 21, the sealing fixing ring 4, the prefabricated capsule opening 31 and the large-aperture section 12 are arranged in sequence from the inside to the outside, and in the vertical direction, the supporting section 22, the sealing fixing ring 4, the prefabricated capsule opening 31 and the first horizontal section 15 are arranged in sequence from top to bottom, so that the sealing fixing ring 4 presses the prefabricated capsule opening 31 against the inner wall surface of the large-aperture section 12 and the top wall surface of the first horizontal section 15.

[0024] Based on the above-mentioned structural setting, the prefabricated capsule mouth 31 is effectively pressed by the sealing fixing ring 4 against the inner wall surface of the large aperture section 12 and the top wall surface of the first horizontal section 15, so that the prefabricated capsule mouth 31 can be firmly fixed to the bottle mouth 11, avoiding the prefabricated soft capsule 3 from being impacted by the fire extinguishing agent or falling due to improper operation, greatly improving the stability and continuity of production, and reducing production interruptions and defective rates caused by the falling of the prefabricated soft capsule 3.

[0025] In this embodiment, a small aperture section 14 is disposed below the medium aperture section 13, and the connection between the medium aperture section 13 and the small aperture section 14 is an inclined section 16. The inclined section 16 enables the prefabricated capsule mouth 31 to slide smoothly into the bottle mouth 11 along the inclined section 16 during assembly, thereby reducing assembly resistance and difficulty.

[0026] In this embodiment, the prefabricated capsule mouth 31 includes a large sleeve 311, a middle sleeve 312 and a small sleeve 313 arranged in sequence from top to bottom, the connection between the large sleeve 311 and the middle sleeve 312 is the second horizontal section 314, and the small sleeve 313 is connected to the capsule body 32 of the prefabricated soft capsule 3; the outer wall surface of the large sleeve 311 abuts against the inner wall surface of the large aperture section 12, the outer wall surface of the middle sleeve 312 abuts against the inner wall surface of the middle aperture section 13, and the top wall surface of the first horizontal section 15 abuts against the bottom wall surface of the second horizontal section 314. Through the structural design above, the prefabricated soft capsule 3 can be put into the bottle mouth 11 more smoothly and quickly, reducing the jamming or dislocation phenomenon that may occur during the operation, and reducing the difficulty of operation.

[0027] In this embodiment, an upper small-diameter section 23 is provided above the supporting section 22, and the sealing assembly further comprises a locking nut 5, one end of which is sleeved on the upper small-diameter section 23 and tightly pressed against the supporting section 22, and the other end of which is threadedly connected to the outer wall of the bottle mouth 11. The locking nut 5 can effectively fix the valve seat 2 and the bottle mouth 11, ensuring a tight connection between them, helping to prevent the fire extinguishing agent or other media from leaking from the interface under high pressure or vibration, thereby improving the structural stability and sealing of the entire fire extinguisher.

[0028] In this embodiment, the inner thread of the inner extension section 21 is connected to the spring seat 6, and the spring seat 6 is provided with a sealing convex ring 61. The sealing convex ring 61 abuts against the bottom surface of the inner extension section 21, thereby ensuring the sealing between the inner extension section 21 and the spring seat 6, and can effectively prevent the fire extinguishing agent from leaking therebetween, thereby improving the sealing performance of the entire fire extinguisher.

[0029] In this embodiment, the valve seat 2 is internally slidably connected with the injection valve core 7, the upper end of the injection valve core 7 is provided with an injection valve core 7 sealing ring, and the lower end of the injection valve core 7 is provided with an injection valve sealing ring 72. The injection valve core 7 sealing ring and the injection valve sealing ring 72 can both abut against the inner wall of the valve seat 2 to prevent the fire extinguishing agent from leaking during the opening and closing of the valve.

[0030] In this embodiment, the inner wall of the valve seat 2 is provided with a guide inclined section 24, and the injection valve sealing ring 72 is provided with a guide fillet 73, and the guide fillet 73 abuts against the guide inclined section 24. The coordinated use of the guide inclined section 24 and the guide fillet 73 enables the injection valve sealing ring 72 to smoothly slide into the valve seat 2 along the guide inclined section 24 during the assembly process, thereby reducing assembly resistance and difficulty and improving assembly efficiency; at the same time, the abutment of the guide fillet 73 and the guide inclined section 24 can form an effective sealing surface, reducing the possibility of leakage and improving the overall sealing effect.

[0031] In this embodiment, a spring 8 is sleeved on the lower end of the injection valve core 7, and the spring 8 abuts against the spring seat 6. The spring 8 provides elastic support for the injection valve core 7. When the valve is closed, the elastic force of the spring 8 can ensure that the injection valve core 7 is tightly attached to the valve seat 2, thereby enhancing the sealing effect and preventing the leakage of the fire extinguishing agent.

[0032] In this embodiment, the inner thread of the spring seat 6 is connected with a siphon tube 9 .

[0033] In this embodiment, a nozzle 10 is threadedly connected to one side of the valve seat 2 .

[0034] In summary, the sealing structure of the water-based fire extinguisher can solve the problem in the prior art that it is difficult to firmly fix the prefabricated capsule mouth of the prefabricated soft capsule at the opening of the bottle body of the water-based fire extinguisher.

[0035] In the absence of conflict, the above-mentioned embodiments and features thereof may be combined with each other.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A water-based fire extinguisher sealing structure, comprising a bottle body (1), a valve seat (2) and a prefabricated soft capsule (3) capable of expansion, characterized in that: The valve seat (2) comprises an inner extension section (21) and a support section (22) connected to the upper part of the inner extension section (21); the support section (22) has a larger diameter than the inner extension section (21); the inner extension section (21) extends into the bottle mouth (11) of the bottle body (1); the support section (22) is located above the bottle mouth (11) and is supported by the bottle mouth (11); the valve seat (2) is connected to a sealing assembly, and the sealing assembly comprises a sealing fixing ring (4) sleeved on the inner extension section (21); the prefabricated soft capsule ( 3) located inside the bottle body (1) and the prefabricated capsule opening (31) of the prefabricated soft capsule (3) is located inside the bottle opening (11); the inside of the bottle opening (11) is a stepped perforation with a constricted mouth shape, the stepped perforation comprises a large aperture section (12) and a medium aperture section (13) located below the large aperture section (12), the connection between the large aperture section (12) and the medium aperture section (13) is a first horizontal section (15), and the sealing fixing ring (4) is located in the large aperture section (12); In the horizontal direction, the inward extension section (21), the sealing fixing ring (4), the preformed capsule opening (31) and the large-aperture section (12) are arranged in sequence from the inside to the outside, and in the vertical direction, the supporting section (22), the sealing fixing ring (4), the preformed capsule opening (31) and the first horizontal section (15) are arranged in sequence from top to bottom, so that the sealing fixing ring (4) presses the preformed capsule opening (31) against the inner wall surface of the large-aperture section (12) and the top wall surface of the first horizontal section (15).

2. The sealing structure of a water-based fire extinguisher according to claim 1, characterized in that: A small aperture section (14) is arranged below the medium aperture section (13), and the connection between the medium aperture section (13) and the small aperture section (14) is an inclined section (16).

3. The sealing structure of a water-based fire extinguisher according to claim 1, characterized in that: The prefabricated capsule opening (31) comprises a large sleeve (311), a middle sleeve (312) and a small sleeve (313) which are arranged in sequence from top to bottom; the connection between the large sleeve (311) and the middle sleeve (312) is a second horizontal section (314); the small sleeve (313) is connected to the capsule body (32) of the prefabricated soft capsule (3); the outer wall surface of the large sleeve (311) abuts against the inner wall surface of the large aperture section (12); the outer wall surface of the middle sleeve (312) abuts against the inner wall surface of the middle aperture section (13); and the top wall surface of the first horizontal section (15) abuts against the bottom wall surface of the second horizontal section (314).

4. The sealing structure of a water-based fire extinguisher according to claim 1, characterized in that: An upper small-diameter section (23) is arranged above the supporting section (22), and the sealing assembly further comprises a locking nut (5), one end of the locking nut (5) is sleeved on the upper small-diameter section (23) and presses the supporting section (22) from top to bottom, and the other end is threadedly connected to the outer wall of the bottle mouth (11).

5. The sealing structure of a water-based fire extinguisher according to claim 1, characterized in that: The inner thread of the inner extension section (21) is connected with a spring seat (6), and the spring seat (6) is provided with a sealing convex ring (61), and the sealing convex ring (61) abuts against the bottom surface of the inner extension section (21).

6. The sealing structure of a water-based fire extinguisher according to claim 5, characterized in that: The valve seat (2) is internally slidably connected with an injection valve core (7), the upper end of the injection valve core (7) is provided with an injection valve core sealing ring (71), and the lower end of the injection valve core (7) is provided with an injection valve sealing ring (72).

7. The sealing structure of a water-based fire extinguisher according to claim 6, characterized in that: The inner wall of the valve seat (2) is provided with a guide inclined section (24), and the injection valve sealing ring (72) is provided with a guide fillet (73), and the guide fillet (73) abuts against the guide inclined section (24).

8. The sealing structure of a water-based fire extinguisher according to claim 7, characterized in that: The lower end of the injection valve core (7) is sleeved with a spring (8), and the spring (8) abuts against the spring seat (6).

9. The sealing structure of a water-based fire extinguisher according to claim 8, characterized in that: The inner thread of the spring seat (6) is connected with a siphon tube (9).

10. The sealing structure of a water-based fire extinguisher according to claim 9, characterized in that: A nozzle (10) is threadedly connected to one side of the valve seat (2).

Images