Alarm device for fire fighting

Abstract

The utility model belongs to the technical field of fire-fighting alarm, and particularly relates to a fire-fighting alarm device which comprises a mounting seat, a plurality of mounting openings distributed annularly are formed in the surface of the mounting seat, a shell is connected to the lower portion of the mounting seat in a threaded mode, and a mounting plate is rotationally connected to the bottom of the shell. A smoke sensor is fixedly connected to the center of the mounting plate; through the mounting seat and the shell which are in threaded connection, mounting and dismounting are convenient, the smoke sensor is maintained, a filter screen intercepts dust from entering the shell, the sensitivity of a smoke sensor probe is kept, a timer controls an electric push rod to operate regularly, an annular extrusion frame is driven to ascend and descend, and then the filter screen is cleaned through a brush layer. Dust on the surface of the filter screen is removed, circulation of airflow is kept, the annular extrusion frame moves downwards to the bottom end to extrude the annular air bag, the annular air bag sprays the airflow to blow off the cleaned dust, and the dust cleaning effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire alarm, in particular to an alarm device for fire fighting. Background Art

[0002] Smoke alarm is a fire detection device, which generally prevents fire by monitoring the concentration of smoke. It uses ion smoke sensor internally. Ion smoke sensor is a technologically advanced sensor with stable and reliable operation, and is widely used in various fire alarm systems.

[0003] The existing Chinese patent with announcement number CN217008364U discloses a fire alarm device for office building safety, including a mounting plate and a smoke alarm body arranged below the mounting plate, a mounting block is fixedly connected to the top of the smoke alarm body, a notch for placing the mounting block is provided on the mounting plate, a positioning component abutting in the notch is provided in the mounting block, and a dustproof component is provided on the smoke alarm body. The utility model realizes the simple and fast installation and removal of the smoke alarm body through the cooperation of the above structures, which provides convenience for the subsequent maintenance and replacement of the smoke alarm body, and can also simply and quickly remove the filter screen cover, which is convenient for cleaning the filter screen cover, avoiding a lot of dust and affecting the sensitivity of the smoke alarm.

[0004] With respect to the above-mentioned related technologies, the inventor believes that the following defects exist: the smoke alarm is installed on the roof, and since the filter cover is too high, it is inconvenient to clean the filter cover regularly; therefore, a fire alarm device is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the utility model provides a fire alarm device.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a fire alarm device described in the utility model includes a mounting seat, a surface of the mounting seat is provided with a plurality of mounting openings distributed in an annular shape, a shell is threadedly connected to the bottom of the mounting seat, a mounting plate is rotatably connected to the bottom of the shell, a smoke sensor is fixedly connected to the center of the mounting plate, a temperature sensor module and an acoustic and light alarm module are installed inside the mounting plate, the smoke sensor is electrically connected to the temperature sensor module and the acoustic and light alarm module, an annular filter is fixedly connected to the edge of the mounting plate, a cleaning component is installed above the filter, the cleaning component includes an annular seat, a cross-section of the annular seat is set to an inverted L shape, the annular seat is fixedly installed at the top of the mounting plate, and the mounting plate and the annular seat are made of high temperature resistant materials.

[0007] Preferably, a plurality of flow openings distributed in a ring shape are provided on the surface of the annular seat, and a baffle is slidably connected inside the flow opening, and the baffle is located above the mounting plate.

[0008] Preferably, a plurality of electric push rods are fixedly connected to the top of the annular seat, the electric push rods are electrically connected to a timer, the driving ends of the electric push rods are fixedly connected to an annular extrusion frame, and the outside of the annular extrusion frame is fixedly connected to a brush layer.

[0009] Preferably, the cleaning assembly further comprises an annular airbag, a top of the annular airbag is provided with a plurality of air holes distributed in an annular shape, and the annular airbag is fixedly mounted at the bottom of the mounting plate.

[0010] Preferably, a spring is fixedly connected to the bottom of the baffle, and a bottom end of the spring is fixedly mounted on the top of the mounting plate.

[0011] Preferably, a protrusion is fixedly connected to the bottom of the baffle, and the baffle is made of high-temperature resistant material. In case of fire, the electric push rod drives the baffle to block the flow port, which can reduce the impact of the fire on the components inside the shell. The high-temperature resistant material is made of polyphenylene sulfide.

[0012] The utility model is beneficial in that:

[0013] 1. The utility model uses a mounting base and a shell that are threadedly connected, which is convenient for loading and unloading to repair the smoke sensor. The filter screen intercepts dust from entering the shell to maintain the sensitivity of the smoke sensor probe. The electric push rod is controlled by a timer to run regularly, driving the annular extrusion frame to rise and fall, and then the filter screen is cleaned by the brush layer to remove dust on the surface of the filter screen to maintain the circulation of airflow. The bottom end of the annular extrusion frame moves downward to squeeze the annular airbag, and the annular airbag sprays airflow to blow off the cleaned dust, thereby improving the dust cleaning effect.

[0014] 2. When the annular extrusion frame moves downward, the utility model drives the baffle to move downward to block the flow port through cooperation with the protrusion, so that the airflow flows outward, and then the dust follows the airflow to flow out of the shell, avoiding dust deposition inside the shell and repeated attachment to the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

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

[0017] Figure 2 This is a cross-sectional view of the housing of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the cleaning component of the utility model;

[0019] Figure 4 This is a schematic diagram of the baffle structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the annular extrusion frame of the utility model.

[0021] In the figure: 1. mounting seat; 2. mounting port; 3. housing; 4. mounting plate; 5. smoke sensor; 6. filter; 7. cleaning assembly; 71. annular seat; 72. flow port; 73. electric push rod; 74. annular extrusion frame; 75. brush layer; 76. annular airbag; 77. baffle; 78. spring; 79. bump. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5As shown, a fire alarm device comprises a mounting base 1, a surface of the mounting base 1 is provided with a plurality of mounting openings 2 distributed in an annular shape, a housing 3 is threadedly connected to the bottom of the mounting base 1, a mounting plate 4 is rotatably connected to the bottom of the housing 3, a smoke sensor 5 is fixedly connected to the center of the mounting plate 4, a temperature sensor module and an acoustic and light alarm module are installed inside the mounting plate 4, the smoke sensor 5 is electrically connected to the temperature sensor module and the acoustic and light alarm module, an annular filter screen 6 is fixedly connected to the edge of the mounting plate 4, a cleaning assembly 7 is installed above the filter screen 6, the cleaning assembly 7 comprises an annular seat 71, a cross section of the annular seat 71 is arranged in an inverted L shape, and the annular seat 71 is provided in an inverted L shape. It is fixedly installed at the top of the mounting plate 4. The mounting plate 4 and the annular seat 71 are made of high-temperature resistant materials. The mounting seat 1 and the shell 3 are connected by threads, which makes it convenient to load and unload the smoke sensor 5 for maintenance. The filter 6 intercepts dust from entering the shell 3 to maintain the sensitivity of the smoke sensor 5 probe. The electric push rod 73 is controlled by a timer to run regularly, driving the annular extrusion frame 74 to rise and fall, and then the filter 6 is cleaned by the brush layer 75 to remove dust on the surface of the filter 6 to maintain the circulation of airflow, and the annular extrusion frame 74 moves downward to squeeze the annular airbag 76 at the bottom, and the annular airbag 76 sprays airflow to blow off the cleaned dust, thereby improving the dust cleaning effect.

[0024] A plurality of flow openings 72 distributed in a ring shape are formed on the surface of the annular seat 71 . A baffle 77 is slidably connected inside the flow opening 72 . The baffle 77 is located above the mounting plate 4 .

[0025] A plurality of electric push rods 73 are fixedly connected to the top of the annular seat 71 . The electric push rods 73 are electrically connected to the smoke sensor 5 . The electric push rods 73 are electrically connected to a timer. The driving ends of the electric push rods 73 are fixedly connected to an annular extrusion frame 74 . The outside of the annular extrusion frame 74 is fixedly connected to a brush layer 75 .

[0026] The cleaning assembly 7 also includes an annular airbag 76 , a top of which is provided with a plurality of air holes distributed in an annular shape, and the annular airbag 76 is fixedly mounted at the bottom of the mounting plate 4 .

[0027] A spring 78 is fixedly connected to the bottom of the baffle 77, and the bottom end of the spring 78 is fixedly installed at the top of the mounting plate 4. The baffle 77 is located above the circulation port 72 due to the elastic force of the spring 78 to maintain air circulation. When the annular extrusion frame 74 moves downward, it cooperates with the protrusion 79 to drive the baffle 77 to move downward to block the circulation port 72, so that the airflow flows outward, and then the dust follows the airflow to flow out of the outer shell 3, thereby preventing the dust from being deposited inside the outer shell 3 and repeatedly adhering to the filter screen 6.

[0028] A protrusion 79 is fixedly connected to the lower part of the baffle plate 77. The baffle plate 77 is made of a high temperature resistant material, and the high temperature resistant material is made of polyphenylene sulfide material.

[0029] Working principle: the mounting base 1 is fixed on the wall by bolts, and the mounting base 1 and the housing 3 are connected by threads, so that the smoke sensor 5 can be easily loaded and unloaded for maintenance. The filter 6 intercepts dust from entering the housing 3 to maintain the sensitivity of the smoke sensor 5 probe. The electric push rod 73 is controlled by a timer to run regularly, driving the annular extrusion frame 74 to rise and fall, and then the filter 6 is cleaned by the brush layer 75 to remove dust on the surface of the filter 6, and the airflow is maintained. The bottom of the annular extrusion frame 74 moves downward to squeeze the annular airbag 76, and the annular airbag 76 sprays airflow to blow off the cleaned dust, thereby improving the dust cleaning effect.

[0030] When the annular extrusion frame 74 moves downward, it cooperates with the protrusion 79 to drive the baffle 77 to move downward to block the flow port 72, so that the airflow flows outward, and then the dust follows the airflow to flow out of the housing 3, avoiding dust from being deposited inside the housing 3 and repeatedly attached to the filter screen 6.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A fire alarm device, comprising a mounting base (1), characterized in that: The surface of the mounting seat (1) is provided with a plurality of mounting openings (2) distributed in an annular shape. A housing (3) is threadedly connected to the bottom of the mounting seat (1). A mounting plate (4) is rotatably connected to the bottom of the housing (3). A smoke sensor (5) is fixedly connected to the center of the mounting plate (4). A temperature sensor module and an acoustic and optical alarm module are installed inside the mounting plate (4). The smoke sensor (5) is electrically connected to the temperature sensor module and the acoustic and optical alarm module. An annular filter (6) is fixedly connected to the edge of the mounting plate (4). A cleaning assembly (7) is installed above the filter (6). The cleaning assembly (7) comprises an annular seat (71). The annular seat (71) The cross section is set to be an inverted L shape, the annular seat (71) is fixedly installed at the top of the mounting plate (4), the mounting plate (4) and the annular seat (71) are made of high temperature resistant materials, a plurality of electric push rods (73) are fixedly connected to the top of the annular seat (71), the electric push rods (73) are electrically connected to a timer, the driving end of the electric push rod (73) is fixedly connected to an annular extrusion frame (74), the outside of the annular extrusion frame (74) is fixedly connected to a brush layer (75), the cleaning component (7) also includes an annular airbag (76), the top of the annular airbag (76) is provided with a plurality of air holes distributed in an annular shape, and the annular airbag (76) is fixedly installed at the bottom of the mounting plate (4).

2. A fire alarm device according to claim 1, characterized in that: The surface of the annular seat (71) is provided with a plurality of circulation openings (72) distributed in an annular shape, and a baffle (77) is slidably connected inside the circulation opening (72), and the baffle (77) is located above the mounting plate (4).

3. A fire alarm device according to claim 2, characterized in that: The bottom of the baffle (77) is fixedly connected with a spring (78), and the bottom end of the spring (78) is fixedly mounted on the top of the mounting plate (4).

4. A fire alarm device according to claim 3, characterized in that: A protrusion (79) is fixedly connected below the baffle (77), and the baffle (77) is made of high temperature resistant material.

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