Hidden fire sprinkler

Abstract

The utility model relates to the technical field of fire fighting, and discloses a hidden fire sprinkler which comprises a sprinkler head, a connecting shell is arranged on the outer surface of the middle of the sprinkler head, one end of the sprinkler head is located in the connecting shell, the outer surface of the middle of the connecting shell is sleeved with a shell, a connecting ring is arranged at the bottom of the shell, and a shielding cover is arranged at the bottom of the connecting ring. According to the hidden fire sprinkler, a telescopic rod is pushed to contract, so that a limiting frame relieves limitation on a limiting plate, then a first spring releases thrust, a push rod is pushed downwards through a fixing ring, the push rod impacts the top of a shielding cover, and the shielding cover is pushed to fall off from the bottom of a connecting ring; the effects that when the shielding cover is blocked by the outside and cannot fall off normally, the shielding cover can be manually controlled to fall off, a climbing tool does not need to be used for operating the spray head on the ceiling, the fire-fighting spray head can work normally, and the fire rescue efficiency is prevented from being affected are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fire-fighting technology, in particular to a hidden fire sprinkler. BACKGROUND

[0002] The fire sprinkler is used for a fire-fighting sprinkler system. When a fire occurs, water is sprayed out through the sprinkler head splash tray for fire extinguishing. With the continuous updating of products, in order to increase the aesthetics of the fire sprinkler and prevent the fire sprinkler from being damaged due to external collision, a hidden fire sprinkler is derived.

[0003] The existing hidden fire sprinkler cover cannot be smoothly detached due to external factors such as painting coating, and the fire sprinkler is usually located on a high ceiling and cannot be manually triggered, so that the fire sprinkler cannot work normally, affecting the rescue efficiency of the fire. CONTENT OF THE UTILITY MODEL

[0004] In view of the defects of the prior art, the present application provides a hidden fire sprinkler, which has the advantages of being able to manually control the detachment of the cover when the cover is blocked by external factors and does not need to use climbing tools to operate the sprinkler on the ceiling, so that the fire sprinkler can work normally and avoid affecting the rescue efficiency of the fire, etc. The problem of the existing hidden fire sprinkler cover being unable to smoothly detach due to external factors such as painting coating, and the fire sprinkler being usually located on a high ceiling and being unable to be manually triggered, so that the fire sprinkler cannot work normally and affects the rescue efficiency of the fire is solved.

[0005] In order to achieve the above-mentioned purpose of being able to manually control the detachment of the cover when the cover is blocked by external factors and not needing to use climbing tools to operate the sprinkler on the ceiling, so that the fire sprinkler can work normally and avoid affecting the rescue efficiency of the fire, the present application provides the following technical solution: a hidden fire sprinkler, comprising a sprinkler head, a connecting shell is arranged on the outer surface of the middle part of the sprinkler head, one end of the sprinkler head is inside the connecting shell, an outer shell is sleeved on the outer surface of the middle part of the connecting shell, a connecting ring is arranged at the bottom of the outer shell, a cover is arranged at the bottom of the connecting ring, a push rod is slidably arranged on the inner wall of the top of the connecting shell, a fixing ring is arranged on one side of the middle part of the push rod, a first spring is arranged on one side of the fixing ring, one end of the first spring is arranged on the top of the inner wall of the connecting shell, a cable is arranged on the top of the push rod, one end of the cable is arranged on the top of a connecting plate, a limiting plate is arranged on one side of the connecting plate, the limiting plate is slidably arranged in the middle part of the inner wall of a limiting frame, one end of the limiting frame is arranged on one side of the telescopic inner rod of a telescopic rod, the telescopic outer tube of the telescopic rod is arranged on one side of the inner wall of a protective shell, the telescopic inner rod of the telescopic rod extends to the outside of the protective shell, and the telescopic inner rod of the telescopic rod is slidably arranged in the inner wall on one side of the protective shell.

[0006] Through the above scheme, by pushing the telescopic rod to retract, the limiting frame is released from the limitation of the limiting plate, and then the first spring releases the pushing force, the fixed ring pushes the push rod downward, the push rod impacts the top of the shielding cover, and the shielding cover is pushed off from the bottom of the connecting ring, so that the shielding cover can be manually controlled to fall off when the shielding cover cannot normally fall off due to external obstacles, and the fire sprinkler can work normally without using climbing tools to operate the sprinkler on the ceiling, so that the fire sprinkler can work normally, and the rescue efficiency of the fire is avoided.

[0007] Further, the telescopic rod is internally provided with a second spring, one end of the second spring is arranged on one end of the inner wall of the telescopic outer tube, and the other end of the second spring is arranged on one end of the telescopic inner rod.

[0008] Through the above scheme, the telescopic inner rod of the telescopic rod can be applied with a pushing force through the arrangement of the second spring, so as to ensure the stability of the position of the telescopic inner rod of the telescopic rod, and prevent the telescopic rod from being retracted at will, so that the limiting frame can stably limit the limiting plate.

[0009] Further, the shielding cover and the connecting ring are welded by fusible metal, and the melting point temperature of the fusible metal between the shielding cover and the connecting ring is lower than the triggering temperature of the thermal element of the sprinkler head.

[0010] Through the above scheme, when a fire occurs, the high temperature generated by the fire will first melt the fusible metal between the shielding cover and the connecting ring, so that the shielding cover falls off, and then the sprinkler head leaks out, avoiding that the high temperature triggers the thermal element of the sprinkler head to start sprinkling to cool the shielding cover, so that the fusible metal between the shielding cover and the connecting ring cannot be melted.

[0011] Further, the inner walls of the two ends of the connecting plate are slidably arranged on the outer surfaces of the middle portions of the two limiting rods, the two ends of the two limiting rods are arranged on the top and bottom of the inner wall of the protective shell respectively, one end of the connecting plate is provided with a handle, the handle at one end of the connecting plate extends to the outside of the protective shell, and a sliding groove matched with the handle at one end of the connecting plate is formed in one side of the protective shell.

[0012] Through the above scheme, the angle of movement of the connecting plate can be fixed by sliding the inner walls of the two ends of the connecting plate on the outer surfaces of the middle portions of the two limiting rods, and the stability of the movement of the connecting plate is improved, the handle arranged at one end of the connecting plate can pull the connecting plate, and then the position of the push rod can be adjusted by pulling the connecting plate and the cable when the sprinkler is installed.

[0013] Further, the connecting shell is rotatably provided with a supporting roller on the top through a supporting frame, and the supporting roller is located on the inner side of the bending position of the cable at the top of the push rod.

[0014] Through the above scheme, the supporting roller is arranged to support the cable, so that the connecting plate can smoothly operate the cable.

[0015] Further, the top of the shell is provided with a plurality of support plates in a ring array, the support plates are made of hard plastic material, the top of each of the plurality of support plates is provided with a first limiting block, the plurality of first limiting blocks are in sliding cooperation with a plurality of second limiting blocks, the plurality of second limiting blocks are arranged on the outer surface of the middle part of the connecting shell in a ring array, and the side adjacent to the first limiting block and the second limiting block is provided with an inclined surface with the same inclination direction.

[0016] Through the above scheme, when the shell drives the support plate and the first limiting block to move upward, the inclined surface of the first limiting block cooperates with the inclined surface of the second limiting block to deform the support plate, so that the first limiting block can smoothly move above the second limiting block, and then the support plate is deformed to reset, pushing the first limiting block to move to the top of the second limiting block, so that the first limiting block cooperates with the second limiting block to limit the position of the shell and the connecting shell, and the shell can be conveniently and quickly installed on the connecting shell.

[0017] Further, the outer surface of the middle part of the connecting shell is provided with a plurality of positioning strips in a ring array, the plurality of positioning strips are in sliding cooperation with a plurality of positioning grooves, and the plurality of positioning grooves are opened in the inner wall of the middle part of the shell in a ring array.

[0018] Through the above scheme, the positioning groove is sleeved on the outer surface of the middle part of the positioning strip, so that the installation angle of the shell and the connecting shell can be fixed, and the first limiting block and the second limiting block can be accurately matched.

[0019] Further, the top of the connecting ring is provided with a sealing ring, and the sealing ring is located in the inside of the shell.

[0020] Through the above scheme, when the shell is installed on the connecting shell, the bottom of the connecting shell is pressed on the top of the sealing ring, so that the sealing property between the shell and the connecting shell is increased.

[0021] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0022] The hidden fire sprinkler can be manually controlled to fall off when the shielding cover is hindered by the outside and cannot normally fall off, and the fire sprinkler can work normally without using climbing tools to operate the sprinkler on the ceiling, so that the effect of avoiding affecting the rescue efficiency of the fire is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a three-dimensional structure schematic diagram of the present application;

[0024] Figure 2 It is a three-dimensional sectional structure schematic diagram of the present application;

[0025] Figure 3 It is a front sectional structure schematic diagram of the present application;

[0026] Figure 4 It is a top sectional structure schematic diagram of the telescopic rod and the protective shell of the present application;

[0027] Figure 5 It is a partial exploded structure schematic diagram of the present application.

[0028] In the figure:

[0029] 1, spray head; 2, connecting shell; 3, outer shell; 4, connecting ring; 5, shielding cover; 6, push rod; 7, fixed ring; 8, first spring; 9, pull cable; 10, connecting plate; 11, limiting plate; 12, limiting frame; 13, telescopic rod; 14, second spring; 15, limiting rod; 16, protective shell; 17, supporting roller; 18, supporting plate; 19, first limiting block; 20, second limiting block; 21, positioning strip; 22, positioning groove; 23, sealing ring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0031] Please refer to Figure 1 , Figure 2 and Figure 3The hidden fire sprinkler in the embodiment comprises a sprinkler head 1, a connecting shell 2 arranged on the outer surface of the middle part of the sprinkler head 1, the one end of the sprinkler head 1 is arranged in the inside of the connecting shell 2, an outer shell 3 is sleeved on the outer surface of the middle part of the connecting shell 2, a connecting ring 4 is arranged on the bottom of the outer shell 3, a shielding cover 5 is arranged on the bottom of the connecting ring 4, a push rod 6 is slidingly arranged on the inner wall of the top of the connecting shell 2, a fixing ring 7 is arranged on the outer surface of the middle part of the push rod 6, a first spring 8 is arranged on one side of the fixing ring 7, one end of the first spring 8 is arranged on the top of the inner wall of the connecting shell 2, a pull rope 9 is arranged on the top of the push rod 6, one end of the pull rope 9 is arranged on the top of a connecting plate 10, a limiting plate 11 is arranged on one side of the connecting plate 10, the limiting plate 11 is slidingly arranged in the inner wall of the middle part of a limiting frame 12, one end of the limiting frame 12 is arranged on one side of the telescopic inner rod of a telescopic rod 13, the telescopic outer tube of the telescopic rod 13 is arranged on one side of the inner wall of a protective shell 16, the telescopic inner rod of the telescopic rod 13 extends to the outside of the protective shell 16, and the telescopic inner rod of the telescopic rod 13 is slidingly arranged in the inner wall of one side of the protective shell 16.

[0032] Please refer to Figure 4 , the second spring 14 is arranged in the inside of the telescopic rod 13, one end of the second spring 14 is arranged on one end of the telescopic outer tube of the telescopic rod 13, and the other end of the second spring 14 is arranged on one end of the telescopic inner rod. Through the arrangement of the second spring 14, a pushing force can be applied to the telescopic inner rod of the telescopic rod 13, so that the stability of the position of the telescopic inner rod of the telescopic rod 13 is ensured, and the telescopic rod 13 is prevented from being randomly retracted, so that the limiting frame 12 can stably limit the limiting plate 11.

[0033] Please refer to Figure 1 , Figure 3 and Figure 5 , the shielding cover 5 and the connecting ring 4 are welded by fusible metal, the melting point temperature of the fusible metal between the shielding cover 5 and the connecting ring 4 is lower than the triggering temperature of the thermal element of the sprinkler head 1, when a fire occurs, the high temperature generated by the fire will first melt the fusible metal between the shielding cover 5 and the connecting ring 4, so that the shielding cover 5 falls off, and then the sprinkler head 1 leaks out, thereby avoiding that the high temperature first triggers the thermal element of the sprinkler head 1 to cause the sprinkler head 1 to start spraying to cool the shielding cover 5, so that the fusible metal between the shielding cover 5 and the connecting ring 4 cannot be melted.

[0034] Please refer to Figure 1 , Figure 2 and Figure 4The inner walls of both ends of the connecting plate 10 are slidably disposed on the outer surface of the middle part of the two limiting rods 15. The two ends of the two limiting rods 15 are respectively disposed on the top and bottom of the inner wall of the protective shell 16. A handle is provided at one end of the connecting plate 10, and the handle at one end of the connecting plate 10 extends to the outside of the protective shell 16. A sliding groove adapted to the handle at one end of the connecting plate 10 is opened on one side of the protective shell 16. The angle of movement of the connecting plate 10 can be fixed by sliding the inner walls of both ends of the connecting plate 10 on the outer surface of the middle part of the two limiting rods 15, thereby improving the stability of the connecting plate 10 when moving. The connecting plate 10 can be pulled by the handle at one end of the connecting plate 10, so that the position of the push rod 6 can be adjusted by pulling the connecting plate 10 in conjunction with the pull cable 9 when installing the nozzle.

[0035] Please see Figure 1 , Figure 3 and Figure 5 A support roller 17 is rotatably mounted on the top of the connecting shell 2 via a support frame. The support roller 17 is located inside the bend of the cable 9 at the top of the push rod 6. The support roller 17 can support the cable 9, allowing the connecting plate 10 to operate the cable 9 smoothly.

[0036] Please see Figure 1 , Figure 3 and Figure 5 The top of the outer shell 3 is arranged in a ring array with multiple support plates 18, which are made of hard plastic. Each support plate 18 has a first limiting block 19 on its top. The multiple first limiting blocks 19 slide in cooperation with multiple second limiting blocks 20. The multiple second limiting blocks 20 are arranged in a ring array on the outer surface of the middle part of the connecting shell 2. The adjacent sides of the first limiting blocks 19 and the second limiting blocks 20 are inclined surfaces with the same inclination direction. When the outer shell 3 moves the support plates 18 and the first limiting blocks 19 upward, the inclined surface of the first limiting block 19 cooperates with the inclined surface of the second limiting block 20 to deform the support plate 18, so that the first limiting block 19 can move smoothly above the second limiting block 20. Then the support plate 18 deforms and resets, pushing the first limiting block 19 to the top of the second limiting block 20. The first limiting block 19 cooperates with the second limiting block 20 to restrict the position of the outer shell 3 and the connecting shell 2, so that the outer shell 3 can be installed on the connecting shell 2 conveniently and quickly.

[0037] Please see Figure 1 and Figure 5 The outer surface of the middle part of the connecting shell 2 is provided with a plurality of positioning strips 21 in a ring array. The plurality of positioning strips 21 slide in cooperation with a plurality of positioning grooves 22. The plurality of positioning grooves 22 are arranged in a ring array on the inner wall of the middle part of the outer shell 3. By sliding the positioning grooves 22 on the outer surface of the middle part of the positioning strips 21, the installation angle between the outer shell 3 and the connecting shell 2 can be fixed, so that the first limiting block 19 and the second limiting block 20 can be precisely engaged.

[0038] Please refer to Figure 2 、 Figure 3 and Figure 5 , the top of the connecting ring 4 is provided with a sealing ring 23, which is located inside the shell 3, which is installed on the connecting shell 2, so that the bottom of the connecting shell 2 is pressed on the top of the sealing ring 23, which can increase the sealing between the shell 3 and the connecting shell 2.

[0039] In this embodiment, the hidden fire sprinkler is pushed to retract the telescopic rod 13, which releases the limit of the limiting frame 12 to the limiting plate 11, and then releases the pushing force of the first spring 8, which pushes the push rod 6 downward through the fixed ring 7, which impacts the top of the shielding cover 5, which pushes the shielding cover 5 off the bottom of the connecting ring 4, which achieves the effect of manually controlling the shielding cover 5 to fall off when the shielding cover 5 is blocked by external factors and cannot fall off normally, and does not need to use climbing tools to operate the sprinkler on the ceiling, so that the fire sprinkler can work normally, avoiding affecting the efficiency of fire rescue.

[0040] The working principle of the above embodiment is: install the protective shell 16 on the wall surface, and make the height of the protective shell 16 at a convenient height, hide the middle part of the cable 9 on the ceiling, when the shielding cover 5 needs to be installed, the positioning groove 22 of the shell 3 is sleeved on the positioning strip 21, the shell 3 is pushed upward to make the shell 3 sleeved on the connecting shell 2, the position of the shell 3 is fixed by the first limiting block 19 and the second limiting block 20, when a fire occurs, the high temperature generated by the fire will first melt the fusible metal between the shielding cover 5 and the connecting ring 4, so that the shielding cover 5 falls off, and the sprinkler head 1 in the connecting shell 2 leaks out, the continuously rising high temperature generated by the fire will melt the thermal sensitive element of the sprinkler head 1, so that the sprinkler head 1 triggers the work to start spraying, when the shielding cover 5 hesitates to fall off normally due to external factors, press the telescopic rod 13, which retracts the telescopic rod 13, drives the limiting frame 12 to move, so that the limiting frame 12 releases the limit of the limiting plate 11, the first spring 8 releases the pushing force, the push rod 6 is pushed downward by the fixed ring 7, which impacts the top of the shielding cover 5, which pushes the shielding cover 5 off the bottom of the connecting ring 4.

[0041] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the enclosed claims. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the application can be varied in a multitude of ways. Such alterations, many of which will be apparent to those skilled in the art, can be based on current technology, and as such, this application should not be limited to the particular embodiments described herein, but should be understood to include all embodiments that are within the scope of the appended claims and their equivalents.

[0042] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, which can be limited only by the scope of the appended claims and their equivalents.

Claims

1. A concealed fire sprinkler head, comprising a sprinkler head (1), characterized in that: A connecting shell (2) is provided on the outer surface of the middle part of the spray head (1). One end of the spray head (1) is inside the connecting shell (2). An outer shell (3) is fitted on the outer surface of the middle part of the connecting shell (2). A connecting ring (4) is provided at the bottom of the outer shell (3). A shielding cover (5) is provided at the bottom of the connecting ring (4). A push rod (6) is slidably provided on the inner wall of the top of the connecting shell (2). A fixing ring (7) is provided on the outer surface of one side of the middle part of the push rod (6). A first spring (8) is provided on one side of the fixing ring (7). One end of the first spring (8) is located at the top of the inner wall of the connecting shell (2). The push rod (6) A cable (9) is provided at the top, one end of which is provided at the top of the connecting plate (10). A limiting plate (11) is provided on one side of the connecting plate (10). The limiting plate (11) is slidably disposed in the inner wall of the middle part of the limiting frame (12). One end of the limiting frame (12) is provided on one side of the telescopic inner rod of the telescopic rod (13). The telescopic outer tube of the telescopic rod (13) is provided on one side of the inner wall of the protective shell (16). The telescopic inner rod of the telescopic rod (13) extends to the outside of the protective shell (16). The outer surface of the middle part of the telescopic inner rod of the telescopic rod (13) is slidably disposed in the inner wall of one side of the protective shell (16).

2. A concealed fire sprinkler head according to claim 1, characterized in that: The telescopic rod (13) is provided with a second spring (14). One end of the second spring (14) is located on one end of the inner wall of the telescopic outer tube of the telescopic rod (13), and the other end of the second spring (14) is located on one end of the telescopic inner rod.

3. A concealed fire sprinkler head according to claim 1, characterized in that: The shielding cover (5) and the connecting ring (4) are welded together by fusible metal. The melting point temperature of the fusible metal between the shielding cover (5) and the connecting ring (4) is lower than the triggering temperature of the thermal element of the spray head (1).

4. A concealed fire sprinkler head according to claim 1, characterized in that: The inner walls of both ends of the connecting plate (10) are slidably disposed on the middle outer surface of the two limiting rods (15). The two ends of the two limiting rods (15) are respectively disposed on the top and bottom of the inner wall of the protective shell (16). One end of the connecting plate (10) is provided with a handle. The handle of one end of the connecting plate (10) extends to the outside of the protective shell (16). A sliding groove adapted to the handle of one end of the connecting plate (10) is opened on one side of the protective shell (16).

5. A concealed fire sprinkler head according to claim 1, characterized in that: The top of the connecting shell (2) is provided with a support roller (17) which is rotatably mounted on the support frame. The support roller (17) is located inside the bend of the top cable (9) of the push rod (6).

6. A concealed fire sprinkler head according to claim 1, characterized in that: The top of the outer shell (3) is provided with a plurality of support plates (18) arranged in a ring array. The support plates (18) are made of hard plastic. The top of each of the support plates (18) is provided with a first limiting block (19). The plurality of first limiting blocks (19) and the plurality of second limiting blocks (20) slide in cooperation. The plurality of second limiting blocks (20) are arranged in a ring array on the outer surface of the middle part of the connecting shell (2). The side adjacent to the first limiting block (19) and the second limiting block (20) are both inclined surfaces with the same inclination direction.

7. A concealed fire sprinkler head according to claim 1, characterized in that: The outer surface of the middle part of the connecting shell (2) is provided with a plurality of positioning strips (21) arranged in a ring array. The plurality of positioning strips (21) are slidably engaged with a plurality of positioning grooves (22). The plurality of positioning grooves (22) are arranged in a ring array on the inner wall of the middle part of the outer shell (3).

8. A concealed fire sprinkler head according to claim 1, characterized in that: The top of the connecting ring (4) is provided with a sealing ring (23), which is located inside the outer shell (3).

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