Fire-fighting composite automatic alarm

Abstract

The utility model discloses a fire-fighting composite automatic alarm, and relates to the technical field of fire-fighting equipment. The device comprises a shell, a detection chamber and an equipment chamber are arranged on the lower portion and the upper portion in the shell respectively, an installation assembly is arranged at the rear end of the shell, and an air inlet and outlet assembly is further arranged in the detection chamber; the mounting assembly comprises mounting frames located on the two sides of the rear end of the shell in the vertical direction, mounting plates are fixedly connected to the upper portion and the lower portion between the mounting frames, and a threaded rod is rotationally connected between the mounting plates. The shell is driven by the threaded rod and the moving block between the mounting frames to move vertically, the mounting height of the shell is adjusted, the problem that the mounting height of the shell is inconvenient to adjust in the prior art is solved, meanwhile, the rotary table is driven by the rotary shaft to rotate relative to the fixed plate, and the mounting efficiency is improved. The relative positions of the vent holes in the fixed plate and the rotating disc are changed, so that the retention time of air in the detection chamber is adjusted, and the problem of low accuracy in the prior art is solved.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection equipment technology, and in particular relates to a fire protection composite automatic alarm device. Background Technology

[0002] Firefighting equipment refers to equipment used for fire extinguishing, fire prevention and other firefighting work. Common firefighting equipment includes fire extinguishers, fire blankets, descent devices and alarms, etc. Among them, alarms are generally also called alarm devices, which are mainly used to detect the smoke concentration in indoor spaces, so as to alert people when a fire occurs.

[0003] A building fire alarm device is disclosed in document CN221327160U, including a base, a housing, a smoke sensor, an alarm light, an alarm horn, a control processor, a swing mechanism, and a cooling fan. The housing is installed on the lower side of the base and is rotatably connected to the base via a support shaft. The control processor is installed inside the housing. The smoke sensor, alarm light, and alarm horn are installed inside the housing and extend to the outside of the housing. The swing mechanism for swinging the housing is installed inside the housing. Ventilation slots are provided on the housing. The cooling fan is installed inside the housing.

[0004] However, it still has the following drawbacks in practical use:

[0005] 1. The building fire alarm described above has a swing component including an electric motor, a drive shaft, a first bevel gear, and a second bevel gear. The electric motor and drive shaft drive the first bevel gear to rotate, and the first and second bevel gears drive the support shaft to rotate, thereby causing the housing to rotate. This increases the propagation range of the alarm light and alarm sound. However, during use, it is not convenient to adjust the installation height of the housing, making installation difficult, and it is also not convenient to detect indoor air at a specified height.

[0006] 2. The building fire alarm described above has a smoke sensor, alarm light and alarm horn installed inside its casing. It detects the smoke concentration in the indoor air in real time through the smoke sensor. However, during use, it is not easy to control the contact time between the indoor air and the smoke sensor, resulting in low accuracy of the smoke sensor in detecting the indoor air.

[0007] To address these issues, we provide a fire alarm system that is a composite automatic alarm device. Utility Model Content

[0008] The purpose of this utility model is to provide a fire-fighting composite automatic alarm device. By using the threaded rod and moving block between the mounting frames to drive the outer shell to move vertically, the installation height can be adjusted, solving the problem of inconvenient installation height adjustment in existing devices. At the same time, by using the rotating shaft to drive the turntable to rotate relative to the fixed plate, the relative position of the vent holes on the fixed plate and the turntable is changed, thereby adjusting the residence time of air in the detection chamber and solving the problem of low accuracy in existing devices.

[0009] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0010] This utility model is a fire-fighting composite automatic alarm device, including a shell, a detection chamber and an equipment chamber respectively arranged at the lower and upper parts of the shell, an installation component arranged at the rear end of the shell, and an air inlet / outlet component arranged inside the detection chamber.

[0011] The mounting assembly includes mounting frames located vertically on both sides of the rear end of the housing. Mounting plates are fixedly connected above and below the mounting frames. Threaded rods are rotatably connected between the mounting plates. A movable block is threaded onto the threaded rod. The front end of the movable block is welded to the center of the rear end face of the housing.

[0012] The air inlet and outlet assembly includes an air inlet shell and an air outlet shell that are fixedly connected to both sides of the inside of the detection chamber. The air inlet shell and the air outlet shell are fixedly connected to the openings inside the detection chamber by fixed plates. A rotating shaft is connected to the lower part of the inside of the detection chamber by an H-shaped frame that rotates laterally. A drive shaft is connected to the lower part of the rotating shaft. The two ends of the rotating shaft rotate through the fixed plates and are welded with turntables. Ventilation holes are provided on both the fixed plates and the turntables.

[0013] The present invention is further configured such that: heat dissipation holes are provided on both inner walls of the equipment chamber; smoke sensors and temperature sensors are fixedly connected to the inner sides of the equipment chamber respectively; sensor probes are electrically connected to the bottom of both smoke sensors and temperature sensors; the bottom of the sensor probes extends into the interior of the detection chamber; and an audible and visual alarm is fixedly connected to the top of the outer shell.

[0014] A further feature of this invention is that: sliding rods are fixedly connected vertically inside the mounting frame; sliders are welded to the outer walls of both sides of the moving block; the free ends of the sliders are sleeved on the outer walls of the sliding rods; and the front ends of the sliders are welded to the two sides of the rear end face of the outer shell.

[0015] A further feature of this invention is that multiple L-shaped seats are welded at equal intervals along the vertical direction on the outer wall of the mounting frame on the side that is far apart from each other, and threaded through holes are provided on the horizontal support arm of each L-shaped seat.

[0016] A further feature of this invention is that the top end of the threaded rod is rotatably connected to the lower surface of the mounting plate located above, the bottom end of the threaded rod rotatably passes through the mounting plate located below and is welded with a sleeve rod, a rotating sleeve is fitted on the outer side of the sleeve rod, and multiple grooves are equally spaced along the circumference on the outer side wall of the sleeve rod, and multiple protrusions are equally spaced along the circumference on the inner side wall of the rotating sleeve, with the grooves and protrusions cooperating with each other.

[0017] A further feature of this invention is that an air inlet and an air outlet are respectively provided on the inner walls of both sides of the testing chamber, and an air inlet shell and an air outlet shell are respectively snapped into the interior of the air inlet and the air outlet shell. L-shaped plates are welded to the front and rear end faces of the air inlet shell and the air outlet shell, and the longitudinal support arms of the L-shaped plates are respectively fixedly connected to the outer walls of both sides of the outer shell.

[0018] A further feature of this invention is that a cover plate is fixedly connected to the opening of the air inlet shell and the air outlet shell located on the outside of the detection chamber, and multiple sieve holes are evenly opened on the outer wall of the cover plate.

[0019] A further feature of this invention is that a first bevel gear is fitted at the center of the outer wall of the rotating shaft. The first bevel gear is located inside the upper part of the H-shaped frame. A motor is fixedly connected to the bottom of the outer shell through a mounting bracket. The output shaft of the motor is fixedly connected to the bottom end of the drive shaft. The top end of the drive shaft rotates through the transverse support arm of the H-shaped frame and is fitted with a second bevel gear. The second bevel gear meshes with the bottom of the first bevel gear.

[0020] This utility model has the following beneficial effects:

[0021] 1. This utility model, by setting up an installation component, applies external force to the rotating sleeve, causing the rotating sleeve to drive the threaded rod to rotate synchronously through the sleeve rod. Under the action of the threaded connection between the threaded rod and the moving block, the moving block drives the outer shell to move vertically in a straight line, realizing the adjustment of its installation height. This facilitates the detection of smoke concentration and temperature in indoor air at different heights, improving practicality and accuracy.

[0022] 2. This utility model, by setting up an air inlet and outlet assembly, starts the motor, and the output shaft of the motor drives the drive shaft to rotate synchronously. The drive shaft drives the rotating shaft to rotate through the meshing connection between the first bevel gear and the second bevel gear, and the rotating shaft drives the turntable to rotate relative to the fixed plate. This causes the air vents on the fixed plate and the turntable to be misaligned, adjusting the residence time of indoor air in the detection room. This facilitates the smoke sensor and temperature sensor to detect the smoke concentration and temperature of the indoor air, improving their accuracy.

[0023] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of a fire-fighting composite automatic alarm device.

[0026] Figure 2 This is a front cross-sectional view of the outer casing of this utility model.

[0027] Figure 3 This is a schematic diagram of the installation component of this utility model.

[0028] Figure 4 This is a schematic diagram of the mounting frame of this utility model.

[0029] Figure 5 This is a schematic diagram of the threaded rod of this utility model.

[0030] Figure 6 This is a schematic diagram of the structure of the movable block of this utility model.

[0031] Figure 7 This is a schematic diagram of the air inlet / outlet assembly of this utility model.

[0032] Figure 8 This is a structural disassembly diagram of the air intake shell of this utility model.

[0033] Figure 9 This is a schematic diagram showing the installation between the rotating shaft and the turntable of this utility model.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1-Outer casing, 101-Detection chamber, 101a-Air inlet, 101b-Air outlet, 102-Equipment chamber, 102a-Heat dissipation hole, 103-Smoke sensor, 103a-Sensor probe, 104-Temperature sensor, 105-Audible and visual alarm, 2-Mounting assembly, 201-Mounting frame, 201a-Slide rod, 201b-L-shaped base, 201c-Threaded through hole, 202-Mounting plate, 203-Threaded rod, 203a-Sleeve rod, 203b-Rotating sleeve, 203 c-groove, 203d-protrusion, 204-moving block, 204a-slider, 3-inlet / outlet assembly, 301-inlet housing, 301a-L-shaped plate, 301b-cover plate, 301c-sieve hole, 302-outlet housing, 303-fixed plate, 303a-vent hole, 304-rotating shaft, 304a-H-shaped frame, 304b-first bevel gear, 305-turntable, 306-drive shaft, 306a-mounting bracket, 306b-motor, 306c-second bevel gear. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0037] Example 1

[0038] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this is the first embodiment of the present invention. This embodiment provides a fire-fighting composite automatic alarm device, including a housing 1. A detection chamber 101 and an equipment chamber 102 are respectively arranged at the lower and upper parts of the housing 1. An installation component 2 is arranged at the rear end of the housing 1. The installation component 2 includes a mounting frame 201, a mounting plate 202, a threaded rod 203, and a moving block 204. The threaded rod 203 and the moving block 204 drive the housing 1 to rise and fall, which solves the problem of the existing device being inconvenient to adjust its installation height.

[0039] Specifically, the mounting frames 201 are vertically distributed and located on both sides of the rear end of the outer shell 1. Mounting plates 202 are fixedly connected above and below the mounting frames 201. Threaded rods 203 are rotatably connected between the mounting plates 202. Moving blocks 204 are threadedly fitted on the threaded rods 203. The front end of the moving blocks 204 is welded to the center of the rear end face of the outer shell 1. The mounting frames 201 are used to mount the outer shell 1 and other structures to the wall. The mounting plates 202 are used to install the threaded rods 203. The threaded rods 203 and the moving blocks 204 are used to drive the outer shell 1 to move up and down.

[0040] Furthermore, heat dissipation holes 102a are provided on both inner walls of the equipment chamber 102. Smoke sensor 103 and temperature sensor 104 are fixedly connected to the inner sides of the equipment chamber 102 respectively. Sensor probes 103a are electrically connected to the bottom of both smoke sensor 103 and temperature sensor 104. The bottom of sensor probes 103a extends into the interior of the detection chamber 101. A sound and light alarm 105 is fixedly connected to the top of the outer shell 1.

[0041] The interior of the mounting frame 201 is fixedly connected with a slide rod 201a along the vertical direction. The two outer walls of the moving block 204 are welded with sliders 204a. The free ends of the sliders 204a are sleeved on the outer walls of the slide rods 201a. The front ends of the sliders 204a are welded to the two sides of the rear end face of the outer shell 1.

[0042] On the outer wall of the mounting frame 201, which are far apart from each other, multiple L-shaped seats 201b are welded vertically at equal intervals. Threaded through holes 201c are opened on the horizontal support arm of each L-shaped seat 201b.

[0043] The top end of the threaded rod 203 is rotatably connected to the lower surface of the mounting plate 202 located above. The bottom end of the threaded rod 203 rotatably passes through the mounting plate 202 located below and is welded with a sleeve rod 203a. A rotating sleeve 203b is fitted on the outer side of the sleeve rod 203a. Multiple grooves 203c are equally spaced along the circumference on the outer side wall of the sleeve rod 203a. Multiple protrusions 203d are equally spaced along the circumference on the inner side wall of the rotating sleeve 203b. The grooves 203c and protrusions 203d cooperate with each other.

[0044] The operation process of this embodiment is as follows: First, the rotating sleeve 203b is fitted onto the sleeve rod 203a through the gap fit between the groove 203c and the protrusion 203d. Then, an external force is applied to the rotating sleeve 203b, so that the rotating sleeve 203b drives the threaded rod 203 to rotate synchronously through the sleeve rod 203a. Under the action of the threaded connection between the threaded rod 203 and the moving block 204, the moving block 204 drives the outer shell 1 to move vertically in a straight line, thereby realizing the adjustment of its installation height.

[0045] Example 2

[0046] Please see Figure 1 , Figure 2 , Figure 7 , Figure 8 and Figure 9 As shown, this is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the previous embodiment in that: the inside of the detection chamber 101 is also provided with an air inlet / outlet assembly 3. The air inlet / outlet assembly 3 includes an air inlet shell 301, an air outlet shell 302, a fixed plate 303, a rotating shaft 304, a turntable 305, and a drive shaft 306. The drive shaft 306 and the rotating shaft 304 drive the turntable 305 to rotate relative to the fixed plate 303, thereby adjusting the position of the vent holes 303a on the fixed plate 303 and the turntable 305, thereby changing the residence time of indoor air in the detection chamber 101 and solving the problem of low detection accuracy in the existing system.

[0047] Specifically, the air inlet shell 301 and the air outlet shell 302 are fixedly connected to the inside sides of the detection chamber 101, respectively. A fixing plate 303 is fixedly connected to the openings of both the air inlet shell 301 and the air outlet shell 302 inside the detection chamber 101. A rotating shaft 304 is laterally rotatably connected to the lower part of the detection chamber 101 via an H-shaped frame 304a. A drive shaft 306 is connected to the lower part of the rotating shaft 304. Both ends of the rotating shaft 304 rotatably pass through the fixing plate 303 and are welded with turntables 305. Ventilation holes 303a are provided on both the fixing plate 303 and the turntable 305. The air inlet shell 301 is used to introduce indoor air into the detection chamber 101, and the air outlet shell 302 is used to introduce gas from the detection chamber 101 into the chamber. The fixed plate 303 and the vent 303a are used to introduce gas from the air inlet shell 301 into the detection chamber 101 or to introduce gas from the detection chamber 101 into the air outlet shell 302. The rotating shaft 304 is used to drive the turntable 305 to rotate. The turntable 305 allows for adjustment of the opening of the vent 303a on the fixed plate 303. The drive shaft 306 is used to drive the rotating shaft 304 to rotate.

[0048] Furthermore, an air inlet 101a and an air outlet 101b are respectively provided on the inner walls of both sides of the testing chamber 101. The air inlet shell 301 and the air outlet shell 302 are respectively snapped into the interior of the air inlet 101a and the air outlet 101b. The front and rear end faces of the air inlet shell 301 and the air outlet shell 302 are welded with L-shaped plates 301a. The longitudinal support arms of the L-shaped plates 301a are respectively fixedly connected to the outer walls of both sides of the outer shell 1.

[0049] Both the air inlet shell 301 and the air outlet shell 302 are fixedly connected to the openings outside the detection chamber 101 with cover plates 301b. Multiple sieve holes 301c are evenly opened on the outer wall of the cover plate 301b.

[0050] A first bevel gear 304b is fitted at the center of the outer wall of the rotating shaft 304. The first bevel gear 304b is located inside and above the H-shaped frame 304a. The bottom of the outer casing 1 is fixedly connected to the motor 306b via the mounting bracket 306a. The output shaft of the motor 306b is fixedly connected to the bottom end of the drive shaft 306. The top end of the drive shaft 306 rotates through the transverse support arm of the H-shaped frame 304a and is fitted with a second bevel gear 306c. The second bevel gear 306c meshes with the bottom of the first bevel gear 304b.

[0051] The rest of the structure is the same as in Example 1.

[0052] The operation process of this embodiment is as follows: start motor 306b, the output shaft of motor 306b drives drive shaft 306 to rotate synchronously, drive shaft 306 drives rotating shaft 304 to rotate through the meshing connection between first bevel gear 304b and second bevel gear 306c, and drives turntable 305 to rotate relative to fixed plate 303 through rotating shaft 304, thereby causing the ventilation holes 303a on fixed plate 303 and turntable 305 to be misaligned, adjusting the residence time of indoor air in detection chamber 101.

[0053] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. A fire-fighting composite automatic alarm device, comprising a housing (1), wherein a detection chamber (101) and an equipment chamber (102) are respectively provided at the lower and upper parts of the interior of the housing (1), characterized in that: The rear end of the outer shell (1) is provided with an installation component (2), and the interior of the detection chamber (101) is also provided with an air inlet / outlet component (3). The mounting assembly (2) includes mounting frames (201) located vertically on both sides of the rear end of the housing (1), and mounting plates (202) are fixedly connected above and below the mounting frames (201). Threaded rods (203) are rotatably connected between the mounting plates (202), and a movable block (204) is threaded on the threaded rod (203). The front end face of the movable block (204) is welded to the center of the rear end face of the housing (1). The air inlet and outlet assembly (3) includes an air inlet shell (301) and an air outlet shell (302) that are fixedly connected to the two sides inside the detection chamber (101). The air inlet shell (301) and the air outlet shell (302) are fixedly connected to the openings inside the detection chamber (101) with fixed plates (303). The interior of the detection chamber (101) is connected to a rotating shaft (304) via an H-shaped frame (304a) that rotates laterally. A drive shaft (306) is connected to the lower part of the rotating shaft (304). The two ends of the rotating shaft (304) rotate through the fixed plate (303) and are welded with turntables (305). Ventilation holes (303a) are provided on both the fixed plate (303) and the turntable (305).

2. The fire-fighting composite automatic alarm device according to claim 1, characterized in that, Heat dissipation holes (102a) are provided on both sides of the inner wall of the equipment chamber (102), and smoke sensor (103) and temperature sensor (104) are fixedly connected to the inner sides of the equipment chamber (102) respectively. The bottom of the smoke sensor (103) and temperature sensor (104) are electrically connected to sensor probes (103a), and the bottom of the sensor probes (103a) extends into the interior of the detection chamber (101). The top of the outer shell (1) is fixedly connected to an audible and visual alarm (105).

3. The fire-fighting composite automatic alarm device according to claim 1, characterized in that, The mounting frame (201) is vertically fixedly connected to the interior of each sliding rod (201a), and sliders (204a) are welded to the outer walls on both sides of the moving block (204). The free ends of the sliders (204a) are sleeved on the outer walls of the sliding rods (201a), and the front end faces of the sliders (204a) are welded to the two sides of the rear end face of the outer shell (1).

4. A fire-fighting composite automatic alarm device according to claim 3, characterized in that, On the outer wall of the mounting frame (201) on the side away from each other, there are multiple L-shaped seats (201b) welded at equal intervals along the vertical direction, and threaded through holes (201c) are opened on the horizontal support arm of each L-shaped seat (201b).

5. A fire-fighting composite automatic alarm device according to claim 1, characterized in that, The top end of the threaded rod (203) is rotatably connected to the lower surface of the mounting plate (202) located above, and the bottom end of the threaded rod (203) rotatably passes through the mounting plate (202) located below and is welded with a sleeve rod (203a). A rotating sleeve (203b) is fitted on the outer side of the sleeve rod (203a), and multiple grooves (203c) are equally spaced along the circumference on the outer side wall of the sleeve rod (203a). Multiple protrusions (203d) are equally spaced along the circumference on the inner side wall of the rotating sleeve (203b), and the grooves (203c) and protrusions (203d) cooperate with each other.

6. A fire-fighting composite automatic alarm device according to claim 1, characterized in that, The inner walls of the two sides of the testing chamber (101) are respectively provided with an air inlet (101a) and an air outlet (101b), and the air inlet shell (301) and the air outlet shell (302) are respectively snapped into the interior of the air inlet (101a) and the air outlet (101b). The front and rear end faces of the air inlet shell (301) and the air outlet shell (302) are welded with L-shaped plates (301a), and the longitudinal support arms of the L-shaped plates (301a) are respectively fixedly connected to the outer walls of the outer shell (1) on both sides.

7. A fire-fighting composite automatic alarm device according to claim 6, characterized in that, The air inlet shell (301) and the air outlet shell (302) are both fixedly connected to the openings outside the detection chamber (101) with cover plates (301b), and multiple sieve holes (301c) are evenly opened on the outer wall of the cover plate (301b).

8. A fire-fighting composite automatic alarm device according to claim 1, characterized in that, The first bevel gear (304b) is sleeved at the center of the outer wall of the rotating shaft (304), and the first bevel gear (304b) is located inside the upper part of the H-shaped frame (304a). The bottom of the outer shell (1) is fixedly connected to the motor (306b) through the mounting bracket (306a), and the output shaft of the motor (306b) is fixedly connected to the bottom end of the drive shaft (306). The top end of the drive shaft (306) rotates through the transverse support arm of the H-shaped frame (304a) and is sleeved with the second bevel gear (306c), and the second bevel gear (306c) meshes with the bottom of the first bevel gear (304b).

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