Anti-interference smoke sensor

Abstract

The utility model discloses an anti-interference smoke sensor in the technical field of smoke sensors, which comprises a smoke sensor body, a base is mounted at the bottom of the smoke sensor body, a ventilation hood is mounted at the bottom of the smoke sensor body, and a plurality of groups of air inlet holes are circumferentially formed in the outer side of the ventilation hood. An anti-interference protection assembly is installed on the inner side of the ventilation hood, a lock catch assembly is installed between the ventilation hood and the body, the body and the base are installed in a threaded connection mode, then the body, a wall, a roof and other structures are installed and fixed through the base, and air in the environment enters the ventilation hood through the air inlet holes to conduct smoke monitoring on the air. The problems that dust in air easily enters equipment, the effect of filtering the dust in the air by existing equipment is poor, the dust interferes with monitoring and early warning of the equipment, the equipment is inconvenient to disassemble and assemble, a filtering structure is inconvenient to replace, the equipment is inconvenient to overhaul, and the fire monitoring precision and practicability of the equipment are affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke sensors, in particular to an anti-interference type smoke sensor. Background Art

[0002] Smoke alarm is actually another name for smoke sensor or smoke alarm. Smoke alarm achieves fire prevention by monitoring the concentration of smoke. It uses an ion smoke sensor inside. When combustion particles are detected, the detector will emit a crisp and loud pulsating alarm sound until the air becomes clear again. It is widely used in important fire prevention places such as homes, factories, office buildings, hospitals, schools, and museums. Existing equipment is easily affected by dust in the air, resulting in inaccurate alarms.

[0003] The existing equipment monitors the flowing air, and dust in the air can easily enter the equipment. The existing equipment is not effective in filtering the dust in the air. The dust interferes with the equipment's monitoring and early warning. It is inconvenient to disassemble the equipment, replace the filter structure, and repair the equipment, which affects the accuracy and practicality of the equipment's fire monitoring. Therefore, technical personnel in this field provide an anti-interference smoke sensor to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-interference type smoke sensor to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: an anti-interference smoke sensor, comprising a body of the smoke sensor, a base is screwed on the bottom of the body, a ventilation hood is installed on the bottom of the body through a locking assembly, and a plurality of groups of air inlet holes arranged in a circumference are opened on the outer side of the ventilation hood;

[0006] A protective component for anti-interference is installed on the inner side of the ventilation hood, each group of the air inlet holes includes a plurality of them, the protective component includes a filter screen installed on the inner side of the ventilation hood, a bracket is installed on the bottom inner side of the ventilation hood, a fan is installed on the top of the bracket, and a plurality of air outlet holes arranged in a circle are provided at the bottom of the ventilation hood, the locking component includes movable grooves respectively provided on both sides of the body, a screw is installed on the inner side of the movable groove, a connecting plate is sleeved on the inner side of the movable groove and located on the outer side of the screw, a locking block is connected to the other side of the connecting plate, locking grooves are respectively provided on both sides of the ventilation hood, the screw is rotatably connected to the body, the screw passes through the connecting plate and is screwed thereto, and the connecting plate passes through the sliding groove and is slidably connected thereto.

[0007] Preferably, a mounting ring is connected to the bottom of the ventilation hood, and a fixing ring is installed at the other end of the inner side of the main body.

[0008] Preferably, a guide plate is connected to the inner side of the air inlet hole, and the guide plate is arc-shaped.

[0009] Preferably, a limiting ring is connected to the bottom of the body, a limiting groove is provided on the top of the ventilation hood, and the limiting ring is movably connected to the limiting groove.

[0010] Preferably, a plurality of filter slots arranged evenly are provided on the outer side of the filter screen plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, by setting a base, a ventilation hood and an air inlet, the main body and the base are installed by screw connection, and then the main body is installed and fixed to the wall, roof and other structures through the base. The air in the environment enters the ventilation hood through the air inlet, so that the main body can monitor the smoke of the air entering the ventilation hood. The protective component can speed up the air flow rate. The ventilation hood can be disassembled and installed and fixed by using the locking component, so that the main body can be inspected and the filter structure can be replaced.

[0013] 2. In the utility model, by setting a filter screen, a fan and an air outlet, the fan is set to have an air outlet direction downward, the fan can accelerate the outside air to enter the ventilation hood through the air inlet, the air can be discharged through multiple air outlets at the bottom of the ventilation hood, the air flow rate is increased, and the main body can monitor the smoke in the air in real time, the filter screen can filter the dust entering the air, the air can drive the smoke particles through the filter screen to enter the ventilation hood, and avoid the dust in the air interfering with the main body monitoring.

[0014] 3. In the utility model, by arranging a screw, a connecting plate and a locking block, the screw can rotate in the movable groove, and the screw can drive the connecting plate to slide in the movable groove, so that the connecting plate drives the locking block to slide, thereby improving the convenience and stability of disassembling and assembling the ventilation hood. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a left-side cutaway stereoscopic view of the overall structure of the utility model;

[0017] Figure 3 The overall structure of the utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 The overall structure of the utility model Figure 2 Enlarged view of point B in the middle.

[0019] In the figure: 1. body; 2. base; 3. ventilation hood; 4. air inlet; 5. filter screen; 6. bracket; 7. fan; 8. air outlet; 9. movable slot; 10. screw; 11. connecting plate; 12. locking block; 13. locking slot; 14. mounting ring; 15. fixing ring; 16. guide plate; 17. limiting ring; 18. limiting slot; 19. filter slot. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1 to Figure 4 In an embodiment of the utility model, an anti-interference type smoke sensor includes a body 1 of the smoke sensor, a base 2 is screwed on the bottom of the body 1, a ventilation hood 3 is installed on the bottom of the body 1 through a locking assembly, a plurality of groups of air inlet holes 4 arranged in a circumference are opened on the outside of the ventilation hood 3, a guide plate 16 is connected to the inside of the air inlet hole 4, and the guide plate 16 is arc-shaped, a protective component for anti-interference is installed on the inside of the ventilation hood 3, and each group of air inlet holes 4 includes a plurality of.

[0022] When in use, the main body 1 and the base 2 are installed by screwing, and then the main body 1 is installed and fixed to the wall, roof and other structures through the base 2. The air in the environment enters the ventilation hood 3 through the air inlet 4. The guide plate 16 in the air inlet 4 can block and guide the dust in the air downward to reduce the amount of dust in the air entering the ventilation hood 3. The main body 1 monitors the air entering the ventilation hood 3 for smoke. The protective component can speed up the air flow rate. The ventilation hood 3 can be disassembled and installed and fixed by using the locking component to facilitate the maintenance of the main body 1 and replacement of the filter structure.

[0023] In one embodiment, specifically, the protective component includes a filter screen plate 5 installed on the inner side of the ventilation hood 3, a plurality of filter slots 19 arranged evenly are provided on the outer side of the filter screen plate 5, a bracket 6 is installed on the bottom of the inner side of the ventilation hood 3, a fan 7 is installed on the top of the bracket 6, a plurality of air outlet holes 8 arranged circumferentially are provided on the bottom of the ventilation hood 3, a mounting ring 14 is connected to the bottom of the ventilation hood 3, and a fixing ring 15 is installed on the other end of the inner side of the main body 1.

[0024] Among them, the ventilation hood 3 limits and fixes the filter plate 5 through the installation ring 14, and the fixing ring 15 at the bottom of the main body 1 limits the filter plate 5, thereby improving the convenience and stability of installing the filter plate 5. The air outlet direction of the fan 7 is set downward, and the fan 7 can accelerate the outside air to enter the ventilation hood 3 through the air inlet hole 4. The air can be discharged through multiple air outlet holes 8 at the bottom of the ventilation hood 3, thereby increasing the air flow rate, so that the main body 1 can monitor the smoke in the air in real time, and the filter plate 5 can filter the dust entering the air. The multiple filter slots 19 can increase the contact area between the filter plate 5 and the dust in the air, so that the filter plate 5 can fully filter the dust in the air, and the air can drive the smoke particles into the ventilation hood 3 through the filter plate 5, thereby preventing the dust in the air from interfering with the monitoring of the main body 1.

[0025] Furthermore, the locking assembly includes movable grooves 9 respectively opened on both sides of the main body 1, a screw 10 is installed on the inner side of the movable groove 9, a connecting plate 11 is sleeved on the inner side of the movable groove 9 and located on the outer side of the screw 10, a locking block 12 is connected to the other side of the connecting plate 11, and locking grooves 13 are respectively opened on both sides of the ventilation hood 3, the screw 10 is rotatably connected to the main body 1, the screw 10 passes through the connecting plate 11 and is threadedly connected to it, and the connecting plate 11 passes through the sliding groove and is slidably connected to it.

[0026] In one embodiment, specifically, the screw rod 10 can rotate in the movable groove 9, and the screw rod 10 can drive the connecting plate 11 to slide in the movable groove 9, so that the connecting plate 11 drives the locking block 12 to slide, thereby improving the convenience and stability of disassembling and assembling the ventilation hood 3.

[0027] Among them, a limiting ring 17 is connected to the bottom of the main body 1, and a limiting groove 18 is opened on the top of the ventilation hood 3. The limiting ring 17 is movably connected with the limiting groove 18. When the ventilation hood 3 and the main body 1 are spliced ​​and installed, the limiting ring 17 is embedded in the limiting groove 18. The limiting groove 18 can limit and fix the limiting ring 17 to prevent the ventilation hood 3 from shifting.

[0028] The working principle of this utility model:

[0029] First, place the filter screen 5 between the ventilation hood 3 and the mounting ring 14, then splice and install the ventilation hood 3 and the main body 1, and at the same time, embed the limit ring 17 into the limit groove 18, and then rotate the screw 10 in the movable groove 9, at this time, the screw 10 drives the connecting plate 11 to slide in the movable groove 9, and at the same time, the connecting plate 11 drives the locking block 12 to slide, and then the connecting plate 11 drives the locking block 12 to be embedded in the locking groove 13 to install and fix the ventilation hood 3, and then the main body 1 and the base 2 are installed by screw connection, and then start the fan 7 to drive the outside air into the ventilation hood 3 through the air inlet 4, and at the same time, the filter screen 5 filters the dust entering the air, and then the air flows out through the multiple air outlets 8 at the bottom of the ventilation hood 3, and at this time, the main body 1 monitors the smoke in the air in real time.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-interference smoke sensor, comprising a smoke sensor body (1), characterized in that: A base (2) is screwed onto the bottom of the body (1), a ventilation hood (3) is installed on the bottom of the body (1) via a locking assembly, and a plurality of groups of air inlet holes (4) arranged in a circumference are provided on the outer side of the ventilation hood (3); A protective component for preventing interference is installed inside the ventilation cover (3), each group of the air inlet holes (4) includes a plurality of them, the protective component includes a filter screen (5) installed inside the ventilation cover (3), a bracket (6) is installed at the bottom of the inner side of the ventilation cover (3), a fan (7) is installed on the top of the bracket (6), a plurality of air outlet holes (8) arranged in a circumference are opened at the bottom of the ventilation cover (3), and the locking component includes movable grooves (9) respectively opened on both sides of the body (1), A screw rod (10) is installed inside the movable groove (9), a connecting plate (11) is sleeved inside the movable groove (9) and outside the screw rod (10), a locking block (12) is connected to the other side of the connecting plate (11), locking grooves (13) are respectively provided on both sides of the ventilation hood (3), the screw rod (10) is rotatably connected to the body (1), the screw rod (10) passes through the connecting plate (11) and is threadedly connected thereto, and the connecting plate (11) passes through the sliding groove and is slidably connected thereto.

2. The anti-interference smoke sensor according to claim 1, characterized in that: The bottom of the ventilation hood (3) is connected to a mounting ring (14), and the other end of the inner side of the body (1) is mounted with a fixing ring (15).

3. The anti-interference smoke sensor according to claim 2, characterized in that: A guide plate (16) is connected to the inner side of the air inlet hole (4), and the guide plate (16) is arc-shaped.

4. The anti-interference smoke sensor according to claim 3, characterized in that: The bottom of the body (1) is connected to a limiting ring (17), the top of the ventilation hood (3) is provided with a limiting groove (18), and the limiting ring (17) is movably connected to the limiting groove (18).

5. The anti-interference smoke sensor according to claim 4, characterized in that: The outer side of the filter screen plate (5) is provided with a plurality of filter slots (19) which are evenly arranged.

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