Dry type spray head

Abstract

The utility model provides a dry type sprayer, which belongs to the technical field of fire extinguishing equipment, and comprises a seat body, a spray nozzle, a spray nozzle, a spray nozzle, a spray nozzle, a spray nozzle, a spray nozzle and a spray nozzle, and is characterized in that the seat body comprises a seat body upper part; a middle cavity is formed in the middle part of the seat body; a trigger cavity is formed in the lower part of the seat body; two ends of the middle cavity are respectively communicated with the sealing cavity and the triggering cavity; the sealing element comprises a plug, the plug is arranged in the sealing cavity, and the plug and the sealing cavity are sealed in an attached mode; the long rod is a rod body, the first end of the long rod is connected to the plug, and the second end of the long rod extends to the trigger cavity along the middle cavity; the trigger module is connected with the trigger cavity, and the trigger module directly or indirectly supports the long rod to maintain the sealing effect of the plug on the sealing cavity; the technical effect of improving the triggering stability of the dry type spray head is achieved.

Description

Technical Field

[0001] This utility model relates to the field of fire protection equipment technology, and in particular to a dry sprinkler head. Background Technology

[0002] Current dry nozzles rely on a sleeve to transmit pre-tightening pressure to the sealing plug. The sleeve has a relatively complex structure, as shown in CN217409622U. This design results in a large number of nozzle parts. When multiple parts need to be assembled, the assembly requirements are high, and it also affects the stability of triggering.

[0003] Therefore, the technical problem with existing technologies lies in how to improve the triggering stability of dry nozzles. Utility Model Content

[0004] This application provides a dry sprinkler head that solves the technical problem of how to improve the triggering stability of dry sprinkler heads in the prior art, and achieves the technical effect of improving the triggering stability of dry sprinkler heads.

[0005] This application provides a dry spray head, comprising: a base, the base including: an upper part having a sealing cavity; a middle part having an intermediate cavity; and a lower part having a trigger cavity; wherein the intermediate cavity is located between the sealing cavity and the trigger cavity, and both ends of the intermediate cavity are respectively connected to the sealing cavity and the trigger cavity; and a sealing element including: a plug disposed in the sealing cavity, the plug and the sealing cavity being connected. The system includes: a sealing layer; a long rod, the first end of which is connected to the plug, and the second end of which extends along the intermediate cavity to the trigger cavity; a trigger module connected to the trigger cavity, the trigger module directly or indirectly supporting the long rod to maintain the sealing effect of the plug on the sealing cavity; and, when the trigger module is heated, the trigger module disintegrates or the connection between the trigger module and the trigger cavity is released, so that the unsupported plug releases its sealing effect on the sealing cavity.

[0006] Preferably, the intermediate cavity is a vertical cavity channel, and the long rod is a vertical rod body.

[0007] Preferably, the middle part of the base has a slide space for accommodating the slide rod relative to the lower part of the base, and the lower part of the base is provided with a slide rod support portion that allows the slide rod to slide relative to the slide rod space; the dry nozzle further includes a splash plate, the splash plate comprising:

[0008] The disc body is located in the trigger cavity and is sleeved on the second end of the long rod, or the disc body is located on the movement trajectory of the long rod and is provided with a through hole that allows the long rod to pass through; the slide rod is located in the slide rod space and is connected to the disc body along the slide rod support, and the disc body has the ability to move downward through the slide rod.

[0009] Preferably, a gap is maintained between the disk body and the circumferential inner wall surface of the trigger cavity.

[0010] Preferably, the axial direction of the slide bar is consistent with the axial direction of the long rod, and the second end of the long rod passes through the center of the disc.

[0011] Preferably, a balancing module is further provided between the second end of the long rod and the trigger module. The balancing module includes: a balancing plate, the first side of which is in contact with the trigger module, and the second side of which faces the second end of the long rod; a balancing ball, which is in contact with the second side of the balancing plate, or the balancing ball and the second side of the balancing plate are integral; the balancing ball contacts the second end of the long rod; and the balancing ball enables a swing-balanced force transmission structure between the trigger module and the long rod.

[0012] Preferably, the balance ball is at least partially spherical, so that there is spherical contact between the balance ball and the balance plate; or, the spherical portion of the balance ball causes spherical contact between the balance ball and the long rod.

[0013] Preferably, the triggering module includes: a trigger seat, wherein two trigger seats are provided, the two trigger seats are arranged opposite each other and a gap is left between the two trigger seats; a first limiting member; a trigger member; and a second limiting member; wherein the first limiting member, the trigger member and the second limiting member are all provided on the two trigger seats, and the two trigger seats are in a state of force balance through the aforementioned three.

[0014] Preferably, the trigger is positioned horizontally in the middle of the two trigger seats along the axial direction of the long rod, and the first limiting member and the second limiting member are located on the upper and lower sides of the trigger, respectively, along the axial direction of the long rod.

[0015] Preferably, the first limiting member is a spring-loaded retaining ring, which causes the movable gap between the two trigger seats to tend to decrease.

[0016] The above-described one or more technical solutions in the embodiments of this application have at least one or more of the following technical effects:

[0017] 1. This application redesigns the structure of the sealing element, using a long rod to transfer the force of the trigger module to the plug, ensuring that the plug can stably seal the sealing cavity; and the single long rod can fall directly when the sprinkler head is triggered, without needing to perform the deformation / disassembly actions of traditional sleeves, making the entire triggering action of the sprinkler head respond stably; in addition, the falling of the long rod can leave water distribution space for the fire sprinkler head, preventing the long rod from getting stuck in the middle cavity and affecting water distribution; thus solving the technical problem of how to improve the triggering stability of dry sprinkler heads in the prior art; achieving the technical effect of improving the triggering stability of dry sprinkler heads. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front cross-sectional structure of a dry nozzle;

[0019] Figure 2 This is a schematic diagram of the front view sectional structure of the base in this application;

[0020] Figure 3 for Figure 1 A schematic diagram of the structure after the base is hidden in the current state;

[0021] Figure 4 This is a schematic diagram of the trigger module in this application from a bottom-view perspective;

[0022] Figure 5 This is a schematic diagram of the main view structure of a dry nozzle after it is triggered.

[0023] Reference numerals: 100, base; 110, upper part of base; 111, sealing cavity; 112, first thread; 120, middle part of base; 121, intermediate cavity; 122, slide rod space; 130, lower part of base; 131, trigger cavity; 132, second thread; 133, slide rod support; 200, sealing element; 210, plug; 211, plug body; 212, sealing ring; 220, long rod; 300, splash plate; 310, plate body; 320, slide rod; 400, balance module; 410, balance plate; 420, balance ball; 500, trigger module; 510, trigger seat; 511, first limiting position; 512, second limiting position; 520, first limiting element; 530, trigger element; 540, second limiting element; 550, movement gap. Detailed Implementation

[0024] The serial numbers assigned to components in this document, such as "first" and "second," are used solely to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used solely for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0027] refer to Figure 1 A dry nozzle includes a base 100, a sealing element 200, and a trigger module 500. The sealing element 200 includes a plug 210 and a long rod 220 connected to the rear end of the plug 210. The trigger module 500 abuts against the long rod 220, so that the force is transmitted along the long rod 220 to the plug 210. Under the action of the force, the plug 210 is pressed tightly against the cavity wall of the sealing cavity 111, thereby sealing the sealing cavity 111 of the dry nozzle.

[0028] Seat size 100, reference Figure 2 The seat 100 comprises, from top to bottom, an upper part 110, a middle part 120, and a lower part 130. These three parts each perform different functions, allowing the seal 200 and the trigger module 500 to block the sealing cavity 111 within the seat 100. The upper part 110, the middle part 120, and the lower part 130 can be a single unit, but are artificially divided into multiple parts for clarity. Alternatively, the three parts can be a combination of two or three components to reduce manufacturing difficulty, lower costs, or simplify the assembly of other components.

[0029] The upper part of the base 110, reference Figure 2 The upper part 110 of the seat is provided with a first thread 112, which connects the upper part 110 of the seat to the fire-fighting pipe. It is understood that the first thread 112 can be either an external thread or an internal thread. The upper part 110 of the seat also has a sealing cavity 111, which communicates with the fire-fighting pipe and is used to restrict the outward flow of the fire-fighting pipe. In one embodiment, the sealing cavity 111 is a flared opening, with the larger diameter side of the flared opening facing the plug 210, so that the plug 210 can move towards the smaller diameter of the sealing cavity 111 under the action of force, thereby achieving a stable seal between the plug 210 and the sealing cavity 111.

[0030] 120 in the middle of the seat, for reference Figure 2 The seat body 120 has an intermediate cavity 121, which is connected to the sealing cavity 111. The intermediate cavity 121 serves two purposes: first, it allows the long rod 220 to pass through; second, it allows the plug 210 to fall down through the intermediate cavity 121 when the plug fails. For example, the intermediate cavity 121 is a vertical cavity, and the long rod 220 is a vertical long rod, so that the long rod 220 can smoothly slide down through the intermediate cavity 121 under the pressure of the fire pipe and its own action.

[0031] The lower part of the seat body 130, reference Figure 2 The lower part 130 of the seat has a trigger cavity 131, which communicates with the intermediate cavity 121. The trigger cavity 131 is used to connect the trigger module 500 so that the plug 210 can tightly act on the sealing cavity 111 based on the position of the trigger module 500. In one embodiment, the lower part 130 of the seat is provided with a second thread 132. Based on the rotational connection between the second thread 132 and the trigger module 500, the trigger module 500 can be pushed upward to tighten the sealing member 200. Specifically, the second thread 132 can be provided on the outer surface of the lower part 130 of the seat, or the second thread 132 can be provided on the cavity wall of the trigger cavity 131.

[0032] In addition, refer to Figure 1 and Figure 2It is important to emphasize that the middle part 120 of the base body has a slide space 122 for accommodating the slide rod 320 relative to the lower part 130 of the base body, and the lower part 130 of the base body is provided with a slide rod support part 133 relative to the slide rod space 122 to allow the slide rod 320 to slide, so that the base body 100 can be adapted to the built-in splash plate 300. It can be understood that the slide rod space 122 can be a physical cavity formed by processing the middle part 120 of the base body, or it can be a virtual space located outside the middle part 120 of the base body. The specific size of the slide rod space 122 is related to the size of the slide rod 320 on the splash plate 300. The size of the slide rod space 122 is sufficient to ensure that the slide rod 320 can move normally in both the stable and triggered states of the dry nozzle. Additionally, the slide bar support portion 133 of the lower part 130 of the base is a solid feature. The slide bar support portion 133 allows the slide bar 320 to slide and restricts the top of the slide bar 320 from sliding down, so as to ensure that the splash plate 300 can be connected to the base 100 when the dry sprinkler head is triggered. For example, the slide bar support portion 133 may be a part of the lower part 130 of the base corresponding to the slide bar space 122, and the top of the slide bar 320 is restricted from sliding down based on this part of the lower part 130; and a through hole is provided on this part to allow the slide bar 320 to slide.

[0033] Seal 200, reference Figure 3 and Figure 5The sealing element 200 includes a plug 210 and a long rod 220, used to receive the abutting force provided by the trigger module 500 and to block the sealing cavity 111 based on the abutting force. The plug 210 is disposed in the sealing cavity 111 and is provided with a sealing ring 212 for fitting and sealing with the sealing cavity 111; the long rod 220 is a rod body, the first end of the long rod 220 is connected to the plug 210, and the second end of the long rod 220 extends along the intermediate cavity 121 to the trigger cavity 131. It can be understood that the long rod 220 and the plug 210 can be connected, can be originally a whole, or can be separate parts fitting and abutting. It is worth noting that when the long rod 220 and the plug 210 are connected or designed as a whole, the plug 210 falls along the trajectory of the long rod 220. In other words, the falling trajectory of the plug 210 is controllable. Based on this, by controlling the falling trajectory of the long rod 220, the falling trajectory of the entire seal 200 can be ensured to be controllable, avoiding the situation where the seal 200 gets stuck in the intermediate cavity 121 or the trigger cavity 131, thus maintaining the triggering reliability of the dry nozzle. Specifically, the falling trajectory of the long rod 220 can be controlled by a limiting ring that is close to the inner wall of the trigger cavity 131 and is fitted onto (or the limiting ring can be located in the falling trajectory of the long rod 220) the second end of the long rod 220, so that the long rod 220 does not wobble circumferentially during the falling process. This limiting ring can be a separate component, or it can be combined with other components in the trigger cavity 131, so that other components have the ability to limit the circumferential wobble of the long rod 220.

[0034] The dry sprinkler head also includes a deflector plate 300 and a balancing module 400. The function of the deflector plate 300 is to guide the direction of water flow to meet the needs of fire extinguishing. The function of the balancing module 400 is to ensure the stability of the force exerted by the trigger module 500 on the long rod 220, and to prevent the trigger module 500 from tilting and affecting the force transmission of the long rod 220 to the plug 210.

[0035] Splash tray 300, reference Figure 3 and Figure 5The splash plate 300 includes a plate body 310 and a slide rod 320. The plate body 310 is located in the trigger cavity 131 and has a surface for dispersing water flow. The slide rod 320 is located in the slide rod space 122 and is connected to the plate body 310 along the slide rod support part 133. The slide rod 320 enables the plate body 310 to move downward. Based on the above-mentioned idea of ​​limiting the long rod 220, the aforementioned limiting ring can be combined with the plate body 310 located in the trigger cavity 131. Specifically, the plate body 310 can be sleeved on the second end of the long rod 220, or the plate body 310 can be located on the movement trajectory of the long rod 220 and the plate body 310 can be provided with a through hole that allows the long rod 220 to pass through. When the long rod 220 falls, the long rod 220 passes through the plate body 310, and the plate body 310 uses the slide rod 320 to more stably limit the movement direction of the long rod 220. It is understood that, in order for the disc 310 to fall stably out of the trigger cavity 131, it is preferable to maintain a gap between the disc 310 and the circumferential inner wall surface of the trigger cavity 131 to prevent the disc 310 from rubbing against the inner wall surface of the trigger cavity 131 during the fall. Furthermore, it is understood that it is preferable to set the axial direction of the slide rod 320 to be consistent with the axial direction of the long rod 220 in the intermediate cavity 121, and the second end of the long rod 220 passes through the center of the disc 310, so that both the splash plate 300 and the long rod 220 can fall stably.

[0036] Balance module 400, reference Figure 3 This is used to improve the tilting problem of the trigger module 500 during the spiral assembly process, ensure stable support of the trigger module 500 for the long rod 220, and prevent the long rod 220 from tilting to the side. The balance module 400 includes a balance plate 410 and a balance ball 420. The first side of the balance plate 410 is in close contact with the trigger module 500, and the second side of the balance plate 410 faces the second end of the long rod 220. The balance ball 420 is in contact with the second side of the balance plate 410, or the balance ball 420 and the second side of the balance plate 410 are integral. The balance ball 420 contacts the second end of the long rod 220. The balance ball 420 creates a swing-balanced force transmission structure between the trigger module 500 and the long rod 220.

[0037] Regarding the force transmission structure for the swaying balance, it should be noted that the balance ball 420 is at least partially spherical, allowing for spherical contact between the balance ball 420 and the balance plate 410; alternatively, the spherical portion of the balance ball 420 allows for spherical contact between the balance ball 420 and the long rod 220, enabling the trigger module 500 to compensate for its tilt through spherical rolling when it is helically connected to the trigger cavity 131. Of course, when a small pitch is used between the trigger module 500 and the lower part of the seat 130 to control the tilt of the trigger module 500, the balance module 400 can be omitted, allowing for contact force transmission between the long rod 220 and the trigger module 500 (this design requires redesigning the trigger seat 510 so that the center of the trigger module 500 has a support point for the long rod 220); and the contact surface between the long rod 220 and the trigger module 500 can also be spherical to adjust the force transmission.

[0038] The trigger module 500 is connected to the trigger cavity 131. The trigger module 500 directly or indirectly supports the long rod 220 to maintain the sealing effect of the plug 210 on the sealing cavity 111. When the trigger module 500 is heated, the trigger module 500 disintegrates or the connection between the trigger module 500 and the trigger cavity 131 is released, so that the sealing effect of the plug 210 on the sealing cavity 111 is released due to the loss of support of the long rod 220.

[0039] Trigger module 500, see reference Figure 3 and Figure 4 This is used for triggering by heat. The trigger module 500 includes a trigger seat 510, a first limiting member 520, a trigger member 530, and a second limiting member 540. Two trigger seats 510 are provided, arranged opposite each other with a gap between them. The first limiting member 520, the trigger member 530, and the second limiting member 540 are all disposed on the two trigger seats 510, and these three components ensure that the two trigger seats 510 are in a state of force balance. Specifically, the trigger member 530 restricts the two trigger seats 510 from approaching, and the first limiting member 520 and the second limiting member 540 restrict the two trigger seats 510 from separating outwards. It can be understood that the trigger member 530 is horizontally positioned in the middle of the two trigger seats 510 along the axial direction of the long rod 220, and the first limiting member 520 and the second limiting member 540 are located on the upper and lower sides of the trigger member 530 respectively along the axial direction of the long rod 220.

[0040] Specifically, to ensure that after the trigger module 500 is triggered, a greater force causes the two trigger seats 510 to move closer together, the first limiting member 520 or the second limiting member 540 is a spring-loaded retaining ring. The first limiting member 520 or the second limiting member 540 causes the gap between the two trigger seats 510 to tend to decrease. It is understood that since the first limiting member 520 is located inside the trigger cavity 131, and the second limiting member 540 is located outside the trigger cavity 131, it is preferable that the first limiting member 520 be a retaining ring type to ensure that the portions of the trigger seats 510 inside the trigger cavity 131 are close together, preventing the trigger seats 510 from getting stuck in the trigger cavity 131.

[0041] Working principle:

[0042] refer to Figure 1 The trigger module 500 is connected in the trigger cavity 131, and the trigger module 500 transmits the resisting force upward to the plug 210, which seals the sealing cavity 111 based on the force.

[0043] refer to Figure 5 When the dry sprinkler head is in a high-temperature environment, the trigger module 500 is triggered, causing the trigger module 500 to fall off due to contact with the base 100. When the trigger module 500 falls off, the seal 200 loses its support and also falls off, causing the sealing cavity 111 to no longer seal, and the water in the fire pipe is discharged outward along with the sealing cavity 111.

[0044] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0045] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A dry spray nozzle, characterized in that, The dry nozzle includes: A seat (100), the seat (100) comprising: The upper part (110) of the seat body has a sealed cavity (111) inside; The middle part (120) of the seat body has an intermediate cavity (121); and The lower part (130) of the seat body has a trigger cavity (131) therein; wherein, the intermediate cavity (121) is located between the sealing cavity (111) and the trigger cavity (131), and the two ends of the intermediate cavity (121) are respectively connected to the sealing cavity (111) and the trigger cavity (131); A seal (200), the seal (200) comprising: A plug (210) is disposed in the sealing cavity (111), and the plug (210) and the sealing cavity (111) are fitted and sealed together; A long rod (220), the long rod (220) is a rod body, the first end of the long rod (220) is connected to the plug (210), and the second end of the long rod (220) extends along the intermediate cavity (121) to the trigger cavity (131); A trigger module (500) is connected to the trigger cavity (131). The trigger module (500) directly or indirectly supports the long rod (220) to maintain the sealing effect of the plug (210) on the sealing cavity (111). When the trigger module (500) is heated, the trigger module (500) disintegrates or the connection between the trigger module (500) and the trigger cavity (131) is released, so that the unsupported plug (210) releases its sealing effect on the sealing cavity (111).

2. The dry spray head as described in claim 1, characterized in that, The intermediate cavity (121) is a vertical cavity, and the long rod (220) is a vertical rod.

3. The dry spray head as described in claim 1, characterized in that, The middle part (120) of the seat body has a slide space (320) for accommodating the slide rod (122) relative to the lower part (130) of the seat body, and the lower part (130) of the seat body is provided with a slide rod support (133) for allowing the slide rod (122) to slide relative to the slide space (320); the dry nozzle also includes a splash plate (300), the splash plate (300) comprising: The disc body (310) is located in the trigger cavity (131). The disc body (310) is sleeved on the second end of the long rod (220), or the disc body (310) is located on the movement trajectory of the long rod (220) and the disc body (310) is provided with a through hole that allows the long rod (220) to pass through. A slide bar (122) is located in the slide bar space (320) and is connected to the disk body (310) along the slide bar support (133). The slide bar (122) enables the disk body (310) to move downward.

4. The dry spray head as described in claim 3, characterized in that, A gap is maintained between the circumferential inner wall surfaces of the disk body (310) and the trigger cavity (131).

5. The dry spray head as described in claim 3, characterized in that, The axial direction of the slide bar (122) is consistent with the axial direction of the long rod (220), and the second end of the long rod (220) passes through the center of the disc (310).

6. The dry spray head as described in claim 1, characterized in that, A balancing module (400) is further provided between the second end of the long rod (220) and the trigger module (500), the balancing module (400) comprising: A balance plate (410) has a first side that is in contact with the trigger module (500), and a second side that faces the second end of the long rod (220). A balance ball (420) is in contact with the second side of the balance plate (410), or the second side of the balance ball (420) and the balance plate (410) are an integral unit; the balance ball (420) contacts the second end of the long rod (220); the balance ball (420) enables a swing-balanced force transmission structure between the trigger module (500) and the long rod (220).

7. The dry spray head as described in claim 6, characterized in that, The balance ball (420) is at least partially spherical, such that there is spherical contact between the balance ball (420) and the balance plate (410); or, the spherical portion of the balance ball (420) causes spherical contact between the balance ball (420) and the long rod (220).

8. The dry spray head as described in claim 1, characterized in that, The trigger module (500) includes: The trigger seat (510) is provided in two, and the two trigger seats (510) are arranged opposite to each other, with an movable gap between the two trigger seats (510); First limiting component (520); Trigger (530); and Second limiting component (540); The first limiting member (520), the trigger member (530) and the second limiting member (540) are all disposed on the two trigger seats (510), and the two trigger seats (510) are in a state of force balance through the aforementioned three.

9. The dry spray head as described in claim 8, characterized in that, The trigger (530) is horizontally positioned between the two trigger seats (510) along the axial direction of the long rod (220), and the first limiting member (520) and the second limiting member (540) are located on the upper and lower sides of the trigger (530) respectively along the axial direction of the long rod (220).

10. The dry spray head as described in claim 9, characterized in that, The first limiting member (520) is a spring-loaded retaining ring, which causes the movable gap between the two trigger seats (510) to tend to decrease.

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