Flush type spray head

Abstract

The utility model relates to the technical field of fire-fighting sprayers, in particular to a flush type sprayer which comprises a body, a shell, a water splashing assembly, an action assembly, a ball and a conical spring, the lower end of the body is connected with the upper end of the shell so that a containing cavity can be formed in the lower side of the body, and a water outlet is formed in the body and the top of the containing cavity. The water splashing assembly is movably arranged in the containing cavity through supporting of the action assembly and the ball and enables the water outlet to be closed. The upper part of the action assembly is at least partially arranged on the inner side of the shell and at least partially matched with the inner side of the shell in size; the upper end part of the ball is crimped with the water splashing assembly, and the lower end part of the ball is crimped with the action assembly; the conical spring is arranged between the top wall of the containing cavity and the water splashing assembly. By means of the spraying head, the consistency of the quality of the spraying head and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire sprinkler heads, and specifically to a flush-type sprinkler head. Background Art

[0002] After the flush-type sprinkler head is installed, it can be flush with the ceiling, with a beautiful appearance. When the sprinkler head is triggered, the splash plate pops out from the sprinkler head. It is necessary to hide the splash plate inside the sprinkler head and ensure that the splash plate can stop at a certain height below the ceiling when it pops out to ensure the splash area.

[0003] In the prior art, for example, a flush-type sprinkler head in a Chinese patent, publication number: CN219323818U, realizes the function of two-stage telescopic splash by setting a splash component and an action component inside the body to replace the concealed sprinkler head. In order to ensure that the splash component of the sprinkler head pops out smoothly without being stuck, it is necessary to ensure that the splash component and the body opening are axially aligned, resulting in high requirements for the production and assembly of the sprinkler head, and it is difficult to ensure its consistency. Therefore, it is necessary to optimize the structure of the sprinkler head to improve production efficiency. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the present utility model is to provide a flush-type sprinkler head, which can improve the consistency of the sprinkler head quality and production efficiency.

[0005] To achieve the above purpose, the present utility model provides the following technical solutions: A flush-type sprinkler head includes a body, a housing, a splash component, an action component, a ball, and a conical spring. The lower end of the body is connected to the upper end of the housing to form a receiving cavity on the lower side of the body. Water outlets are provided at the top of the body and in the receiving cavity. The splash component is movably arranged in the receiving cavity through the support of the action component and the ball and closes the water outlet. At least part of the upper part of the action component is arranged inside the housing, and at least part of the size of the upper part of the action component is adapted to the size inside the housing. The upper end of the ball is pressed against the splash component, and the lower end is pressed against the action component. The conical spring is arranged between the top wall of the receiving cavity and the splash component.

[0006] Preferably, a retaining ring is provided at the lower part inside the housing. The action component includes a bearing bracket, two lever hooks, and a fusible piece. At least part of the upper part of the bearing bracket is adapted to the inner diameter of the retaining ring. A plurality of clamping blocks are provided at the lower end of the bearing bracket. The lower ends of the two lever hooks are pre-tensioned and connected through the fusible piece. The retaining ring is located between the upper ends of the two lever hooks and the clamping blocks, and both the upper ends of the lever hooks and the clamping blocks are pressed against the retaining ring. The upper ends of the lever hooks are pressed against the upper part of the bearing bracket. The ball is pressed against the bearing bracket.

[0007] Preferably, a through hole is provided in the middle of the upper end of the bearing bracket. The through hole is coaxial with the water outlet. At least part of the ball is arranged in the through hole.

[0008] Preferably, the carrier bracket body has a square tube structure with an open lower end.

[0009] Preferably, the water splashing assembly includes a sealing seat, an internal angle bolt, a water splashing plate, an annular bottom plate, and two guide rods. At least a part of the upper portion of the sealing seat is embedded in the water outlet; the water splashing plate is arranged on the lower side of the sealing seat through the internal angle bolt; the bottom plate is arranged in the accommodating cavity, the upper end of the bottom plate is press-connected with the conical spring, and the lower end of the bottom plate is press-connected with the upper end of the water splashing plate; the upper ends of the two guide rods are fixedly connected to the bottom plate; a stop block for blocking the water splashing plate is arranged at the lower end of the guide rod; the lower end of the internal angle bolt is press-connected with the upper end of the ball; the outer diameter of the bottom plate is smaller than the inner diameter of the housing body and larger than the inner diameter of the retaining ring..

[0010] Preferably, the sealing seat is composed of a plug and a chassis, and the outer diameter of the plug is adapted to the water outlet.

[0011] Preferably, the actuating assembly further includes a decorative cover; two connecting arms are arranged at the lower part of the carrier bracket; the decorative cover is arranged at the lower side of the housing through the two connecting arms.

[0012] Preferably, the decorative cover and the two connecting arms are fixed by plugging.

[0013] Preferably, sealing grooves are further formed on the upper part of the chassis and the outer side of the plug, and sealing rings are arranged in the sealing grooves.

[0014] Preferably, the sealing seat is made of polyurethane-coated polytetrafluoroethylene.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: By arranging a seat body adapted to the size of the retaining ring in the accommodating cavity inside the body, a through hole coaxial with the water outlet is formed on the seat body, and a ball for supporting the water splashing assembly is movably placed on the through hole. Through the limitation of the structure, not only the consistency of the nozzle can be ensured, but also the production efficiency of the nozzle can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural view of the cross-section of the nozzle of the present utility model;

[0017] Figure 2 is a schematic structural view of the sealing seat of the present utility model;

[0018] Figure 3 is a schematic structural view of the support seat of the present utility model.

[0019] In the figure: 1 body, 11 water outlet, 12 receiving groove; 2 outer shell, 21 retaining ring; 3 water splashing component, 31 sealing seat, 32 internal angle bolt, 33 water splashing plate, 34 bottom plate, 35 guide rod, 311 plug, 312 chassis, 313 water sealing groove; 4 actuating component, 41 bearing bracket, 42 lever hook, 43 fusible link, 44 decorative cover, 411 seat body, 412 clamping block, 413 connecting arm; 5 ball, 6 conical spring, 7 outer cover. Detailed implementation manners

[0020] The following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice the present invention. Although the present invention is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative and do not limit the scope of the present invention.

[0021] Specific embodiment 1: Please refer to Figures 1-3 A flush type sprinkler head, comprising: a body 1, an outer shell 2, a water splashing component 3, an actuating component 4, a ball 5, a conical spring 6 and an outer cover 7. The lower end of the body 1 is connected to the upper end of the outer shell 2 to form a receiving cavity on the lower side of the body 1. On the body 1 and at the top of the receiving cavity, a water outlet 11 is provided. The water splashing component 3 is movably arranged in the receiving cavity under the support of the actuating component 4 and the ball 5 to close the water outlet 11. The conical spring 6 is arranged between the top wall of the receiving cavity and the water splashing component 3. When the actuating component 4 functions, the water splashing component 3 can lose support and open the water outlet 11, and at the same time, the conical spring 6 releases elastic potential energy to quickly eject the water splashing component 3; the ball 5 is arranged between the water splashing component 3 and the actuating component 4; the outer cover 7 is sleeved on the outer periphery of the outer shell 2.

[0022] In this embodiment, the body 1 and the outer shell 2 are threadedly connected; in other embodiments, the body 1 and the outer shell 2 can also be an integrally formed structure. An internal receiving groove is also provided inside the lower part of the body 1, and the receiving groove is located at the top of the receiving cavity; an external thread is provided on the outer periphery of the interface of the body 1 for connecting to a municipal pipeline.

[0023] A raised retaining ring 21 is provided inside the lower part of the outer shell 2.

[0024] The water splashing component 3 includes a sealing seat 31, an internal angle bolt 32, a water splashing plate 33, an annular bottom plate 34 and a guide rod 35. The sealing seat 31 is composed of a plug 311 and a chassis 312. The outer diameter of the plug 311 is adapted to the water outlet 11. After the plug 311 is inserted into the water outlet 11 from bottom to top, the water outlet 11 can be completely closed. On the chassis 312 and outside the plug 311, a sealing groove 313 is also provided, and an annular sealing ring (not shown in the figure) is further provided in the sealing groove. The water splashing plate 33 is arranged on the lower side of the chassis 312 through the internal angle bolt 32. The bottom plate 34 is arranged in the accommodating groove. The upper end of the bottom plate 34 is press-connected to the conical spring 6, and the lower end of the bottom plate 34 is press-connected to the upper end of the water splashing plate 33. Two guide rods 35 are provided. The upper ends of the two guide rods 35 are fixedly connected to the bottom plate 34. The water splashing plate 33 is slidably connected to the guide rod 35, and a stop block for blocking the water splashing plate 33 is provided at the lower end of the guide rod 35. The lower end of the internal angle bolt 32 is press-connected to the upper end of the ball 5. The outer diameter of the bottom plate 34 is smaller than the inner diameter of the housing 2 body but larger than the inner diameter of the retaining ring 21.

[0025] In one embodiment, in order to improve the sealing performance, the plug 311 is made of polyurethane-coated polytetrafluoroethylene and will not adhere to the body 1 after long-term use.

[0026] The actuating component 4 includes a bearing bracket 41, two lever hooks 42, a fusible link 43 and a decorative cover 44. The bearing bracket 41 includes a seat body 411, four clamping blocks 412 and two connecting arms 413. The seat body 411 is in the shape of a square tube structure with an open lower end. The length of the seat body 411 is adapted to the inner diameter of the retaining ring 21. A through hole for placing the ball 5 is provided at the upper end of the seat body 411, and the inner diameter of the through hole is smaller than the outer diameter of the ball 5. The through hole is coaxially arranged with the water outlet 11. Through the cooperation and limitation of the seat body 411 and the retaining ring 21, the through hole and the water outlet 11 can be coaxially arranged more accurately, which can not only simplify the assembly process, but also make the opening of the water splashing component 3 and the body 1 consistent in the axial direction, ensure the balanced force of the water splashing component 3, and make it difficult for the water splashing component 3 to be stuck when being ejected and retracted.

[0027] The four clamping blocks 412 are evenly placed at the left and right ends of the lower part of the seat body 411 to expand the size of the lower part of the seat body 411. After the clamping blocks 412 are provided, the lower part size of the seat body 411 is larger than the inner diameter of the retaining ring 21, so that the clamping blocks 412 play a role in limiting, and the degree of the seat body 411 extending into the inner side of the housing 2 is certain, which can improve the assembly efficiency. The two connecting arms 413 are respectively placed at the front and rear ends of the seat body 411, and the decorative cover 44 is arranged on the lower side of the housing 2 through the connecting arms. The decorative cover 44 and the two connecting arms 413 are fixedly connected by plugging.

[0028] The lower ends of the two lever hooks 42 are pre-tensioned and connected by a fusible link 43; both of the two lever hooks 42 are arranged below the seat body 411, the upper part of the lever hook 42 supports the seat body 411, and the upper end of the lever hook 42 is crimped with the upper end of the retaining ring 21. At this time, the retaining ring 21 is located between the upper end parts of the two lever hooks 42 and the locking block 412. Under the action of the lever, the lever hook 42 and the locking block 412 form a clamping force on the retaining ring 21, making the support of the action component 4 more stable.

[0029] The working principle of this flush sprinkler: When the sprinkler is heated, the fusible link 43 disintegrates, and the lower ends of the two lever hooks 42 lose the pre-tensioning force. The lever hooks 42 fall out of the accommodation cavity. After the bearing bracket 41 and the ball 5 lose the support of the lever hook, they also fall out of the accommodation cavity. At this time, after the water splashing component 3 loses the support of the ball 5, the water pressure in the water outlet 11 and the elasticity of the conical spring 6 push the water splashing component 3 downward. The water splashing component 3 is released at the first stage. The water splashing component 3 falls until the bottom plate 34 is blocked by the retaining ring 21. At this time, the two guide rods extend out of the accommodation cavity, and the water splashing component 3 is released at the second stage. The water splashing disk 33 continues to move downward along the two guide rods until the water splashing disk 33 falls to the lower end head position of the guide rod and is located outside the housing 2. Finally, the water in the water outlet 11 impacts the water splashing disk 33, splashing the water outward to carry out fire fighting.

[0030] Through this technical solution, by arranging a seat body adapted to the size of the retaining ring in the accommodation cavity on the inner side of the body, a through hole coaxial with the water outlet is opened on the seat body, and a ball for supporting the water splashing component is placed movably on the through hole. Through the limitation of the structure, not only the consistency of the sprinkler can be ensured, but also the production efficiency of the sprinkler can be improved.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flush-type nozzle, characterized in that: It includes a body (1), a housing (2), a water splashing component (3), an actuating component (4), a ball (5), and a conical spring (6). The lower end of the body (1) is connected to the upper end of the housing (2) so that a receiving cavity is formed on the lower side of the body (1). On the body (1) and at the top of the receiving cavity, a water outlet (11) is provided. The water splashing component (3) is movably arranged in the receiving cavity through the support of the actuating component (4) and the ball (5) and closes the water outlet (11). At least part of the upper part of the actuating component (4) is arranged inside the housing (2), and at least part of the size of the upper part of the actuating component (4) is adapted to the inner size of the housing (2). The upper end of the ball (5) is press-connected to the water splashing component (3), and the lower end is press-connected to the actuating component (4). The conical spring (6) is arranged between the top wall of the receiving cavity and the water splashing component (3).

2. The flush-type nozzle according to claim 1, wherein: A retaining ring (21) is provided at the lower part inside the housing (2). The actuating component (4) includes a bearing bracket (41), two lever hooks (42), and a fusible piece (43). At least part of the size of the upper part of the bearing bracket (41) is adapted to the inner diameter of the retaining ring (21). A number of clamping blocks are provided at the lower end of the bearing bracket (41). The lower ends of the two lever hooks (42) are pre-tensioned and connected through the fusible piece (43). The retaining ring (21) is located between the upper ends of the two lever hooks (42) and the clamping blocks, and the upper ends of the lever hooks (42) and the clamping blocks are both press-connected to the retaining ring (21). The upper end of the lever hook (42) is press-connected to the upper part of the bearing bracket (41). The ball (5) is press-connected to the bearing bracket (41).

3. The flush-type nozzle according to claim 2, wherein: A through hole is provided in the middle of the upper end of the bearing bracket (41). The through hole is coaxial with the water outlet (11). At least part of the ball (5) is arranged in the through hole.

4. The flush sprinkler according to claim 2, wherein: The body of the bearing bracket (41) is in the shape of a square tube structure with an open lower end.

5. The flush sprinkler according to claim 2, characterized in that: The water splashing component (3) includes a sealing seat (31), an internal angle bolt (32), a water splashing plate (33), an annular bottom plate (34), and two guide rods (35). At least part of the upper part of the sealing seat (31) is embedded in the water outlet (11). The water splashing plate (33) is arranged on the lower side of the sealing seat (31) through the internal angle bolt (32). The bottom plate (34) is arranged in the receiving cavity. The upper end of the bottom plate (34) is press-connected to the conical spring (6), and the lower end of the bottom plate (34) is press-connected to the upper end of the water splashing plate (33). The upper ends of the two guide rods (35) are fixedly connected to the bottom plate (34). A blocking block for blocking the water splashing plate (33) is provided at the lower end of the guide rod (35). The lower end of the internal angle bolt (32) is press-connected to the upper end of the ball (5). The outer diameter of the bottom plate (34) is smaller than the inner diameter of the housing body (2) and larger than the inner diameter of the retaining ring (21).

6. The flush-mounted nozzle according to claim 5, characterized in that: The sealing seat (31) is composed of a plug and a chassis, and the outer diameter of the plug is adapted to the water outlet.

7. The flush-type nozzle according to claim 2, wherein: The actuating component (4) further includes a decorative cover (44). Two connecting arms are provided at the lower part of the bearing bracket (41). The decorative cover (44) is arranged on the lower side of the housing (2) through the two connecting arms.

8. The flush sprinkler according to claim 7, wherein: The decorative cover (44) is fixedly connected to the two connecting arms by plugging.

9. The flush-type nozzle according to claim 6, wherein: Sealing grooves are further provided on the upper part of the chassis and on the outside of the plug, and sealing rings are provided in the sealing grooves.

10. The flush-type nozzle according to claim 5, wherein: The sealing seat (31) is made of polyurethane-coated polytetrafluoroethylene.

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