Fire-fighting spray header

Abstract

The utility model discloses a fire-fighting spray head, relates to fire-fighting equipment technology, its technical scheme key point is: including spray head body, thermosensitive glass tube and U-shaped frame, spray head body includes thread bushing and connecting seat, connecting seat detachable connection is equipped with protective casing, protective casing and U-shaped frame abut against each other. When an operator installs the fire-fighting spray header by means of tools such as a wrench, the protective shell separates the thermosensitive glass tube from the wrench, so that the wrench is difficult to touch the thermosensitive glass tube, the possibility of breakage of the thermosensitive glass tube is reduced, and in addition, due to the existence of the protective shell, the fire-fighting spray header is prevented from being damaged in the transportation process of the fire-fighting spray header. According to the fire-fighting spray head, the protective shell is arranged on the heat-sensitive glass tube, the heat-sensitive glass tube can be well protected, so that the possibility that the heat-sensitive glass tube is broken under the non-fire condition is reduced, and after the fire-fighting spray head is installed, the protective shell is detached from the fire-fighting spray head, so that the protective shell does not influence the sensitivity of the heat-sensitive glass tube when the fire-fighting spray head is normally used.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire fighting equipment technology, more specifically, it relates to fire fighting spray head. BACKGROUND

[0002] Fire fighting spray head is the important equipment of fire fighting spray system, and the fire fighting spray head is usually used with the fire fighting water pipe, the fire fighting spray head includes the spray head body, the U-shaped frame, the heat sensitive glass tube and the splash tray, the spray head body includes the threaded sleeve and the connecting seat, the threaded sleeve is used for the threaded connection with the fire fighting water pipe, the U-shaped frame is fixed on the connecting seat, the heat sensitive glass tube is filled with kerosene, ether and other liquids which can expand easily under heat, in order to ensure the sensitivity of the heat sensitive glass tube, the wall thickness is usually thin, and the two ends of the heat sensitive glass tube are respectively in contact with the spray head body and the splash tray.

[0003] When the fire breaks out, the temperature of the air rises and the liquid in the heat sensitive glass tube expands under heat, and when it exceeds a certain threshold, the heat sensitive glass tube will be cracked, so that the water in the fire fighting water pipe can be sprayed on the splash tray through the spray head body, and the splash tray can be scattered to obtain a larger water spraying area, thereby ensuring the fire extinguishing effect.

[0004] When installing the fire fighting spray head, the operator needs to use a wrench to clamp the connecting seat to tighten the threaded sleeve on the fire fighting water pipe, but the wrench is easy to touch the heat sensitive glass tube during the screwing process, which will cause the heat sensitive glass tube to break, and the heat sensitive glass tube needs to be replaced, which is not convenient.

[0005] Therefore, a new scheme is needed to solve this problem. CONTENT OF THE UTILITY MODEL

[0006] In view of the defects in the prior art, the utility model aims at providing a fire fighting spray head.

[0007] The above technical purpose of the utility model is realized by the following technical scheme: the fire fighting spray head comprises a spray head body, a heat sensitive glass tube and a U-shaped frame, the spray head body comprises a threaded sleeve and a connecting seat, the heat sensitive glass tube is installed between the U-shaped frame and the spray head body, a protective shell covering the heat sensitive glass tube is detachably connected to the connecting seat, and the protective shell is in contact with the U-shaped frame.

[0008] The utility model is further provided with a circular groove coaxial with the heat sensitive glass tube in the protective shell, and the diameter of the circular groove is greater than that of the heat sensitive glass tube.

[0009] The utility model is further provided with two parallel side walls one of the connecting seat, and the protective shell comprises a bottom shell and an upper shell arranged close to the splash tray, and the two side walls of the bottom shell are flush with the two side walls one of the connecting seat.

[0010] The utility model further sets up: the projected area of upper shell on connecting base is less than the projected area of bottom shell on connecting base, the upper shell is pasted with the foamed sponge which is in contact with heat sensitive glass tube.

[0011] The utility model further sets up: the bottom shell is equipped with T shape piece on the side wall of upper shell, the connecting base is equipped with the sliding slot who is used for T shape piece to draw in, the sliding slot communicates with the arc side wall of connecting base.

[0012] The utility model further sets up: the side wall of sliding slot is equipped with the recess who is close to the arc side wall of connecting base setting, T shape piece is equipped with the ball convex who is used for embedding recess.

[0013] The utility model further sets up: the minimum spacing of two foamed sponges is equal with the diameter of heat sensitive glass tube.

[0014] In summary, the utility model has following beneficial effect: when the operator installs fire -fighting spray head to fire -fighting water pipe with the help of wrench and so on, the protection shell will separate heat sensitive glass tube and wrench, makes the operator to turn the wrench in the process, and the wrench is difficult to touch heat sensitive glass tube, reduces the possibility of heat sensitive glass tube breakage, in addition, the existence of protection shell can provide better protection for heat sensitive glass tube in the transportation process of fire -fighting spray head, thereby reduces the possibility of heat sensitive glass tube breakage under non -fire condition, after installation is completed, the protection shell is removed from fire -fighting spray head, makes fire -fighting spray head when normal use, and the protection shell will not have the influence to the sensitivity of heat sensitive glass tube. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is structure schematic of the utility model Figure 1 ;

[0016] Figure 2 It is structure schematic of the utility model Figure 2 ;

[0017] Figure 3 It is the enlarged schematic view of A part in Figure 2 ;

[0018] Figure 4 It is the enlarged schematic view of B part in Figure 2 ;

[0019] Figure 5 It is the partial sectional view of the utility model.

[0020] In the drawing: 1, heat sensitive glass tube;2, shape frame;3, threaded sleeve;4, connecting base;41, side wall one;5, round groove;6, bottom shell;7, upper shell;8, foamed sponge;9, shape piece;10, sliding slot;11, recess;12, ball convex. DETAILED DESCRIPTION

[0021] The utility model will be described in detail below in combination with the drawings and examples.

[0022] The fire-fighting spray head, as shown in Figure 1 and Figure 2 , comprises a spray head body, a heat-sensitive glass tube 1 and a U-shaped frame 2, the spray head body comprises a threaded sleeve 3 and a connecting seat 4, the heat-sensitive glass tube 1 is installed between the U-shaped frame 2 and the spray head body, a protective shell covering the heat-sensitive glass tube 1 is detachably connected to the connecting seat 4, the protective shell is in abutment with the U-shaped frame 2, when an operator installs the fire-fighting spray head onto a fire-fighting water pipe by means of a wrench or other tools, the protective shell separates the heat-sensitive glass tube 1 from the wrench, so that the wrench is less likely to touch the heat-sensitive glass tube 1 during the process of the operator turning the wrench, thereby reducing the possibility of the heat-sensitive glass tube 1 breaking, in addition, the existence of the protective shell can provide better protection for the heat-sensitive glass tube 1 during the transportation of the fire-fighting spray head, thereby reducing the possibility of the heat-sensitive glass tube 1 breaking in a non-fire situation, after the installation is completed, the protective shell is detached from the fire-fighting spray head, so that the protective shell will not affect the sensitivity of the heat-sensitive glass tube 1 when the fire-fighting spray head is in normal use.

[0023] As shown in Figure 2 and Figure 5 , a circular groove 5 coaxially arranged with the heat-sensitive glass tube 1 is formed in the protective shell, the diameter of the circular groove 5 is greater than the diameter of the heat-sensitive glass tube 1, this arrangement causes a gap to exist between the outer wall of the heat-sensitive glass tube 1 and the protective shell, even if the protective shell is deformed to a certain extent by the wrench, the protective shell is not easy to directly touch the heat-sensitive glass tube 1, thereby making the heat-sensitive glass tube 1 less likely to break in a non-fire situation, the connecting seat 4 comprises two mutually parallel side walls 41, the side walls 41 are used to abut against the wrench, the protective shell comprises a bottom shell 6 and an upper shell 7 arranged close to the water splash plate, the two side walls of the bottom shell 6 are flush with the two side walls 41 of the connecting seat 4, this arrangement causes the side walls of the bottom shell 6 flush with the side walls 41 to also abut against the wrench when the wrench acts on the connecting seat 4, so that the operator can use the wrench to install the fire-fighting spray head without deliberately aiming the wrench at the side walls 41, which can speed up the installation of the fire-fighting spray head, the projection area of the upper shell 7 on the connecting seat 4 is less than the projection area of the bottom shell 6 on the connecting seat 4, the upper shell 7 and the bottom shell 6 are integrally formed by injection molding through a mold made of PVC material, the small volume of the upper shell 7 reduces the overall weight of the protective shell while providing protection for the heat-sensitive glass tube 1, the upper shell 7 has foamed sponges 8 adhered thereto abutting against the heat-sensitive glass tube 1, the minimum distance between the two foamed sponges 8 is equal to the diameter of the heat-sensitive glass tube 1, the existence of the foamed sponges 8 causes the heat-sensitive glass tube 1 to abut against the foamed sponges 8 when it shakes due to vibration, thereby reducing the possibility of the heat-sensitive glass tube 1 directly colliding with the inner wall of the circular groove 5, and further providing a certain protective effect for the heat-sensitive glass tube 1.

[0024] As Figures 2 to 4 shown, the bottom shell 6 is provided with a T-shaped block 9 on the side wall facing away from the upper shell 7, and the connecting seat 4 is provided with a sliding groove 10 for clamping the T-shaped block 9, the cross section of the sliding groove 10 coincides with the cross section of the T-shaped block 9, and the sliding groove 10 is in communication with the arc-shaped side wall of the connecting seat 4. When disassembled, the T-shaped block 9 can be pulled out of the sliding groove 10, so that the T-shaped block 9 no longer limits the bottom shell 6 on the connecting seat 4, so that the protective shell can be separated from the connecting seat 4. The side wall of the sliding groove 10 is provided with a recess 11 close to the arc-shaped side wall of the connecting seat 4, and the T-shaped block 9 is provided with a ball convex 12 for embedding the recess 11. When the ball convex 12 is embedded in the recess 11, the ball convex 12 can limit the T-shaped block 9 in the sliding groove 10, so that the T-shaped block 9 is not easy to slide in the sliding groove 10, so that the protective shell can better protect the heat-sensitive glass tube 1.

[0025] The preferred embodiments of the present application are described above, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical solutions falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that for ordinary skilled in the art, some improvements and decorations without departing from the principles of the present application, these improvements and decorations shall also be considered as the protection scope of the present application.

Claims

1. A fire sprinkler head, comprising a head body, a heat-sensitive glass tube (1) and a U-shaped bracket (2), the head body comprising a threaded sleeve (3) and a connecting seat (4), the heat-sensitive glass tube (1) being installed between the U-shaped bracket (2) and the head body, characterized in that: The connecting base (4) is detachably connected with a protective shell covering the heat-sensitive glass tube (1), and the protective shell is in abutment with the U-shaped frame (2).

2. The fire sprinkler head of claim 1, wherein: A circular groove (5) coaxial with the heat-sensitive glass tube (1) is formed in the protective shell, and the diameter of the circular groove (5) is greater than that of the heat-sensitive glass tube (1).

3. The fire sprinkler head of claim 2, wherein: The protective shell comprises a bottom shell (6) and an upper shell (7) arranged close to the water pan, and the two side walls of the bottom shell (6) are flush with the two side walls of the connecting base (4).

4. The fire sprinkler head of claim 3, wherein: The projected area of the upper shell (7) on the connecting base (4) is smaller than that of the bottom shell (6), and a foamed sponge (8) abutting against the heat-sensitive glass tube (1) is pasted in the circular groove (5) of the upper shell (7).

5. The fire sprinkler head of claim 4, wherein: A T-shaped block (9) is arranged on the side wall of the bottom shell (6) away from the upper shell (7), a sliding groove (10) for the T-shaped block (9) to be inserted into is formed in the connecting base (4), and the sliding groove (10) is in communication with the arc-shaped side wall of the connecting base (4).

6. The fire sprinkler head of claim 5, wherein: A recess (11) close to the arc-shaped side wall of the connecting base (4) is formed in the side wall of the sliding groove (10), and a spherical convex (12) for being embedded into the recess (11) is arranged on the T-shaped block (9).

7. The fire sprinkler head of claim 4, wherein: The minimum distance between the two foamed sponges (8) is equal to the diameter of the heat-sensitive glass tube (1).

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