An aspirating smoke detection device

Abstract

The utility model provides a kind of air-breathing smoke sensing device, it is related to smoke detector technical field, the utility model includes the slot being opened in the inner wall surface of hollow cylinder two sides, the inside of two slots is slidably inserted with insert strip board, two insert strip boards are fixedly installed with circular tube between, the inside of circular tube is fixedly installed with filter screen, the outer wall surface of two extension rods is slidably connected with moving strip, the surface of moving strip is fixedly installed with insert rod, the top surface of two insert strip boards is fixedly installed with extension plate, the surface of two extension plates is equipped with the insertion hole matched with insert rod, the utility model is equipped with assembling device, so that it can realize filter screen disassembly by using sliding, unlocking operation, unscrew bolt, sliding L type board makes insert rod separate from insertion hole, just can draw out circular tube with filter screen, avoid the drawbacks of traditional device " disassembly whole machine, time-consuming long ", greatly shorten filter screen cleaning time, reduce the length of time of detection device shutdown early warning, reduce fire leakage report risk.

Description

Technical Field

[0001] This utility model relates to the field of smoke detector technology, and in particular to an inhalation-type smoke detector device. Background Technology

[0002] Smoke detectors can detect smoke in the early stages of a fire, achieving early fire warning. This product is suitable for fire alarms in homes, shops, dance halls, warehouses, and other places. The aspirating smoke detector is a type of smoke detector that can detect smoke early and issue an alarm more quickly. In actual use, it has the advantages of accurate alarm, simple operation, stable use, and long service life.

[0003] Existing aspirating smoke detectors typically use filter structures to prevent insects or airborne impurities from entering. Over time, these filters accumulate debris, hindering airflow. Regular cleaning is necessary. However, in existing aspirating smoke detectors, the filter is directly fixed inside the intake channel. Cleaning requires completely removing the entire detector unit from its installation location – a cumbersome and time-consuming process. Furthermore, the device must be completely shut down during maintenance, resulting in a prolonged interruption of the fire warning function. If an early-stage fire occurs during this period, the failure of the warning can lead to missing the optimal time for fire suppression. Utility Model Content

[0004] The purpose of this invention is to provide an inhalation-type smoke detection device to solve the problems mentioned above in the background technology.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an inhalation-type smoke detection device, comprising a top base, four mounting plates arranged in a ring on the outer wall surface of the top base, each of the four mounting plates having mounting holes on its surface, an annular mounting seat fixedly mounted on the bottom surface of the top base, an annular mounting groove formed on the surface of the annular mounting seat, a hollow cylinder movably inserted into the annular mounting groove, an air outlet formed on the outer wall surface of the hollow cylinder, multiple air outlet holes evenly formed on the inner bottom surface of the air outlet, and a starter mechanism fixedly mounted on the outer wall surface of the hollow cylinder. The button is closed. A cross plate is fixedly installed between the inner walls of the hollow cylinder. A motor is fixedly installed on the surface of the cross plate. A fan is fixedly installed at the output end of the motor. A detector is fixedly installed on the surface of the annular mounting base. The detector and the motor are electrically connected to the button. An assembly device is provided on the inner wall surfaces of both sides of the hollow cylinder. The assembly device includes slots opened on the inner wall surfaces of both sides of the hollow cylinder. Insertion strips are slidably inserted into the two slots. A circular cylinder is fixedly installed between the two insertion strips. A filter screen is fixedly installed inside the circular cylinder.

[0006] Preferably, extension rods are fixedly installed on both outer wall surfaces of the hollow cylinder, and movable strips are slidably connected to the outer wall surfaces of the two extension rods. Insert rods are fixedly installed on the surface of the movable strips, and extension plates are fixedly installed on the top surfaces of the two insertion plates. Insertion holes matching the insert rods are opened on the surface of the two extension plates.

[0007] Preferably, a strip plate is fixedly installed on the surface of the end of the extension rod away from the hollow cylinder, and the surface of the strip plate has a groove.

[0008] Preferably, an L-shaped plate is slidably connected inside the groove, and the end of the L-shaped plate away from the groove is fixedly connected to the moving strip.

[0009] Preferably, an extension plate is fixedly installed on the surface of the vertical end of the L-shaped plate, and bolts are threadedly connected to the surface of the extension plate. The surface of the strip plate is evenly provided with multiple threaded holes that match the bolts.

[0010] The effects achieved by the above components are as follows: Preferably, the outer wall surfaces on both sides of the annular mounting base are provided with limiting devices. The limiting devices include limiting seats fixedly installed on the outer wall surfaces on both sides of the annular mounting base. Limiting grooves are formed on the surface of the limiting seats. L-shaped limiting plates are fixedly installed on the outer wall surfaces on both sides of the hollow cylinder. The end of the L-shaped limiting plate away from the hollow cylinder is located inside the limiting groove.

[0011] Preferably, two support plates are fixedly installed on one side surface of the two limiting seats, a round rod is fixedly installed between the two support plates, two sliders are slidably connected to the outer wall surface of the round rod, and a spring is fixedly installed between the two sliders.

[0012] Preferably, the surface of the slider is hinged with a hinge plate, and a T-shaped plate is hinged to the surface of the hinge plate away from the slider. A positioning rod is fixedly installed on the surface of the T-shaped plate. A positioning hole matching the positioning rod is opened on the surface of the vertical end of the L-shaped limiting plate. A pull rod is fixedly installed on the surface of the T-shaped plate away from the positioning rod.

[0013] The above components achieve the following effects: by engaging the L-shaped limiting plate with the limiting groove and locking the spring-driven positioning rod with the positioning hole, a double fixing structure is formed, which can firmly restrict the position of the hollow cylinder and prevent the hollow cylinder from shifting due to environmental vibration; at the same time, in conjunction with the sealing strip of the annular mounting groove, it can prevent external dust from entering the hollow cylinder, ensuring the cleanliness of the motor, fan and detector, and reducing the risk of failure.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, by setting up an assembly device, the filter screen can be disassembled and assembled by sliding and unlocking operations. Loosening the bolts and sliding the L-shaped plate to disengage the insertion rod from the insertion hole allows the cylindrical tube with the filter screen to be pulled out. This avoids the drawbacks of traditional devices that require disassembling the entire machine and are time-consuming, significantly shortens the filter screen cleaning time, reduces the duration of the detection device's shutdown warning, and lowers the risk of missed fire alarms. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This utility model Figure 1 Another structural diagram from a different angle; Figure 3 This utility model Figure 2 A schematic diagram of the separation structure; Figure 4 This utility model Figure 1 A schematic diagram of the exploded structure; Figure 5 This is a schematic diagram of the internal structure of the hollow cylinder of this utility model; Figure 6 This utility model Figure 2 A schematic diagram of the three-dimensional structure at point A in the middle; Figure 7 This utility model Figure 3 A schematic diagram of the three-dimensional structure at point B.

[0016] Legend: 1. Top seat; 2. Assembly device; 201. Slot; 202. Insert plate; 203. Circular cylinder; 204. Filter screen; 205. Extension rod; 206. Moving bar; 207. Insert rod; 208. Extension plate; 209. Insertion hole; 210. Strip plate; 211. Groove; 212. L-shaped plate; 213. Extension plate; 214. Bolt; 215. Threaded hole; 3. Limiting device; 301. Limiting seat; 302. Limiting groove 303, L-shaped limit plate; 304, support plate; 305, round rod; 306, slider; 307, spring; 308, hinge plate; 309, T-shaped plate; 310, positioning rod; 311, positioning hole; 312, pull rod; 4, mounting plate; 5, air outlet; 6, air hole; 7, start / stop button; 8, annular mounting base; 9, annular mounting groove; 10, hollow cylinder; 11, detector; 12, cross plate; 13, motor; 14, fan. Detailed Implementation

[0017] Example 1, such as Figure 1-7As shown, an inhalation-type smoke detector includes a top base 1. Four mounting plates 4 are annularly distributed on the outer wall surface of the top base 1, each with mounting holes. An annular mounting seat 8 is fixedly mounted on the bottom surface of the top base 1. An annular mounting groove 9 is formed on the surface of the annular mounting seat 8. A hollow cylinder 10 is movably inserted into the annular mounting groove 9. An air outlet 5 is formed on the outer wall surface of the hollow cylinder 10. Multiple air outlet holes 6 are evenly formed on the inner bottom surface of the air outlet 5. An on / off button 7 is fixedly mounted on the outer wall surface of the hollow cylinder 10. A cross plate 12 is fixedly mounted between the inner walls of the hollow cylinder 10. A motor 13 is fixedly mounted on the surface of the cross plate 12. The output end of the motor 13 is fixedly mounted... The device is equipped with a fan 14. A detector 11 is fixedly mounted on the surface of the annular mounting base 8. The detector 11, motor 13 and the on / off button 7 are electrically connected. The top base 1 is made of flame-retardant ABS material. The inner wall of the annular mounting groove 9 is lined with a polytetrafluoroethylene wear-resistant layer. The hollow cylinder 10 is made of transparent PC material. The on / off button 7 has an LED indicator light. A solid green light indicates normal operation, and a red light indicates a fault. The motor 13 is a miniature brushless motor, model RS-380SH, DC12V, with overload protection. The detector 11 is a photoelectric smoke detector. The inner wall of the hollow cylinder 10 is lined with sound-absorbing cotton. The inner wall of the annular mounting groove 9 is lined with nitrile rubber sealing strips. The detector 11 is covered with a dust cover made of transparent PC material.

[0018] Reference Figure 2-6 As shown in this embodiment: Assembly devices 2 are provided on both inner wall surfaces of the hollow cylinder 10. Each assembly device 2 includes slots 201 formed on the inner wall surfaces of both sides of the hollow cylinder 10. Insertion strips 202 are slidably inserted into the interior of each slot 201. A circular cylinder 203 is fixedly installed between the two insertion strips 202. A filter screen 204 is fixedly installed inside the circular cylinder 203. Extension rods 205 are fixedly installed on both outer wall surfaces of the hollow cylinder 10. Moving strips 206 are slidably connected to the outer wall surfaces of both extension rods 205. Insertion rods 207 are fixedly installed on the surface of the moving strips 206. Extension plates are fixedly installed on the top surfaces of both insertion strips 202. 208. Both extension plates 208 have insertion holes 209 that match the insertion rod 207 on their surfaces. A strip plate 210 is fixedly installed on the end of the extension rod 205 away from the hollow cylinder 10. A groove 211 is formed on the surface of the strip plate 210. An L-shaped plate 212 is slidably connected inside the groove 211. The end of the L-shaped plate 212 away from the groove 211 is fixedly connected to the moving bar 206. An extension plate 213 is fixedly installed on the surface of the vertical end of the L-shaped plate 212. A bolt 214 is threadedly connected to the surface of the extension plate 213. Multiple threaded holes 215 that match the bolt 214 are evenly formed on the surface of the strip plate 210. The filter screen 204 is a HEPA 13 high-efficiency filter.

[0019] Reference Figure 3-7As shown in this embodiment: Limiting devices 3 are provided on both outer wall surfaces of the annular mounting base 8. Each limiting device 3 includes a limiting seat 301 fixedly installed on the outer wall surfaces of both sides of the annular mounting base 8. A limiting groove 302 is formed on the surface of the limiting seat 301. L-shaped limiting plates 303 are fixedly installed on both outer wall surfaces of the hollow cylinder 10. The end of the L-shaped limiting plate 303 away from the hollow cylinder 10 is located inside the limiting groove 302. Two support plates 304 are fixedly installed on one side surface of the two limiting seats 301. A round rod 305 is fixedly installed between the two support plates 304. Two sliders 306 are slidably connected to the outer wall surface of the round rod 305. A spring 307 is fixedly installed between two sliders 306. A hinge plate 308 is hinged to the surface of the slider 306. A T-shaped plate 309 is hinged to the surface of the hinge plate 308 away from the slider 306. A positioning rod 310 is fixedly installed on the surface of the T-shaped plate 309. A positioning hole 311 matching the positioning rod 310 is opened on the surface of the vertical end of the L-shaped limiting plate 303. A pull rod 312 is fixedly installed on the surface of the T-shaped plate 309 away from the positioning rod 310. The spring 307 is made of stainless steel with a wire diameter of 1.2mm, an outer diameter of 5mm, a free length of 30mm, an elastic coefficient of 2N / mm, and no permanent deformation when the compression is ≤15mm.

[0020] Working principle: When the device is needed, the operator first determines the installation position of the top mount 1, such as a suspended ceiling or high wall surface, ensuring that the detection range covers the target area. Mark the installation point with a marker, pass the expansion bolt through the mounting hole of the mounting plate 4, align it with the marked point, and screw it into the fixing surface until the top mount 1 is tightly attached to the fixing surface without shaking. Then, use a level to calibrate the top mount 1 to ensure that the top mount 1 is level, avoiding the hollow cylinder 10 from being misaligned due to tilting, which would affect the airflow stability. Next, press the start / stop button 7 to start the device: the detector 11 and the motor 13 are powered on simultaneously. The motor 13 drives the fan 14 to rotate at high speed, creating a negative pressure environment and actively sucking in the surrounding air. The air first enters the circular cylinder 203 inside the hollow cylinder 10. As it passes through the internal filter 204, the filter intercepts dust, insects, and other impurities. The filtered clean air then flows to the detector 11. If the smoke concentration in the air reaches the warning threshold of the detector 11, such as when a photoelectric detector senses smoke obscuring light, the detector 11 immediately issues an audible and visual alarm and transmits the signal to the external fire suppression system. The air that has completed detection is finally discharged from the hollow cylinder 10 through the air outlet 6 of the air outlet 5. The entire "intake-filtration-detection-exhaust" process is repeated cyclically, achieving 24-hour continuous early fire monitoring. The sound-absorbing cotton on the inner wall can reduce the noise of the motor 13 and fan 14, avoiding environmental interference. When the filter 204 needs to be cleaned after one month of use, first press the on / off button 7 to turn off the device. The motor will stop within 10 seconds, and the detector 11 will stop monitoring. Then loosen the bolt 214 on the extension plate 213: completely unscrew the bolt 214 from the threaded hole 215 of the strip plate 210. At this time, the L-shaped plate 212 loses its limit in the groove 211. Then slide the L-shaped plate 212 away from the hollow cylinder 10 along the groove 211. The L-shaped plate 212 drives the moving strip 206 to slide synchronously along the extension rod 205, thereby making The insertion rod 207 on the surface of the moving strip 206 comes out of the insertion hole 209 of the extension plate 208. After the insertion rod 207 comes out, the insertion strip plate 202 is not fixed in the slot 201. Hold both ends of the cylindrical tube 203 with both hands and slowly pull it out: the insertion strip plate 202 slides smoothly along the slot 201 until the cylindrical tube 203 is completely separated from the hollow tube 10. At this time, the filter screen 204 can be cleaned: use compressed air to blow away the dust on the surface of the filter screen 204. When resetting after cleaning, first align the insertion strip plate 202 with the slot 201 and insert it. Slide the L-shaped plate 212 in the opposite direction along the groove 211 so that the insertion rod 207 is reinserted into the insertion hole 209.Finally, tighten bolt 214 until the resistance is even, lock the L-shaped plate 212 in position, press the start / stop button 7 to restart the device and restore the detection function. During later use, if the motor 13 makes abnormal noise or the fan 14 jams, first turn off the device power, hold the lever 312 of the limit device 3 with both hands, and pull it away from the limit seat 301. The lever 312 will move the T-shaped plate 309, and through the hinge plate 308, it will pull the two sliders 306 towards the center along the circular rod 305. 306 compresses spring 307, causing spring 307 to be compressed. Simultaneously, T-shaped plate 309 drives positioning rod 310 to disengage from positioning hole 311 of L-shaped limiting plate 303. L-shaped limiting plate 303 loses its fixation within limiting groove 302, at which point hollow cylinder 10 can be pulled outwards. When hollow cylinder 10 separates from annular mounting groove 9, maintenance can be performed on motor 13 and fan 14 inside hollow cylinder 10, such as cleaning dust from fan 14 impeller and replacing motor 10 bearings.

[0021] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. An inhalation-type smoke detection device, comprising a top base (1), wherein four mounting plates (4) are arranged in a ring on the outer wall surface of the top base (1), and mounting holes are provided on the surfaces of the four mounting plates (4). An annular mounting seat (8) is fixedly installed on the bottom surface of the top base (1), and an annular mounting groove (9) is provided on the surface of the annular mounting seat (8). A hollow cylinder (10) is movably inserted into the annular mounting groove (9), and an air outlet (5) is provided on the outer wall surface of the hollow cylinder (10). The bottom of the air outlet (5) is... The hollow cylinder (10) has multiple air outlets (6) evenly distributed on its surface. An on / off button (7) is fixedly installed on the outer wall surface of the hollow cylinder (10). A cross plate (12) is fixedly installed between the inner walls of the hollow cylinder (10). A motor (13) is fixedly installed on the surface of the cross plate (12). A fan (14) is fixedly installed at the output end of the motor (13). A detector (11) is fixedly installed on the surface of the annular mounting base (8). The detector (11), the motor (13), and the on / off button (7) are all electrically connected. The characteristic feature is that: The inner wall surfaces on both sides of the hollow cylinder (10) are provided with assembly devices (2). The assembly devices (2) include slots (201) opened on the inner wall surfaces on both sides of the hollow cylinder (10). Insertion plates (202) are slidably inserted into the two slots (201). A circular cylinder (203) is fixedly installed between the two insertion plates (202). A filter screen (204) is fixedly installed inside the circular cylinder (203).

2. The inhalation-type smoke detection device according to claim 1, characterized in that: Extension rods (205) are fixedly installed on both outer wall surfaces of the hollow cylinder (10). Moving strips (206) are slidably connected to the outer wall surfaces of the two extension rods (205). Insert rods (207) are fixedly installed on the surface of the moving strips (206). Extension plates (208) are fixedly installed on the top surfaces of the two insert plates (202). Insert holes (209) matching the insert rods (207) are opened on the surface of the two extension plates (208).

3. The inhalation-type smoke detection device according to claim 2, characterized in that: A strip plate (210) is fixedly installed on the surface of the extension rod (205) away from the hollow cylinder (10), and a groove (211) is provided on the surface of the strip plate (210).

4. The inhalation-type smoke detection device according to claim 3, characterized in that: An L-shaped plate (212) is slidably connected inside the groove (211), and the end of the L-shaped plate (212) away from the groove (211) is fixedly connected to the moving strip (206).

5. The inhalation-type smoke detection device according to claim 4, characterized in that: An extension plate (213) is fixedly installed on the surface of the vertical end of the L-shaped plate (212), and a bolt (214) is threadedly connected to the surface of the extension plate (213). A plurality of threaded holes (215) matching the bolts (214) are evenly opened on the surface of the strip plate (210).

6. The inhalation-type smoke detection device according to claim 1, characterized in that: The outer wall surfaces of both sides of the annular mounting base (8) are provided with limiting devices (3). The limiting devices (3) include limiting seats (301) fixedly installed on the outer wall surfaces of both sides of the annular mounting base (8). Limiting grooves (302) are opened on the surface of the limiting seats (301). L-shaped limiting plates (303) are fixedly installed on the outer wall surfaces of both sides of the hollow cylinder (10). The end of the L-shaped limiting plate (303) away from the hollow cylinder (10) is located inside the limiting groove (302).

7. The inhalation-type smoke detection device according to claim 6, characterized in that: Two support plates (304) are fixedly installed on one side surface of the two limiting seats (301), and a round rod (305) is fixedly installed between the two support plates (304). Two sliders (306) are slidably connected to the outer wall surface of the round rod (305), and a spring (307) is fixedly installed between the two sliders (306).

8. The inhalation-type smoke detection device according to claim 7, characterized in that: The surface of the slider (306) is hinged with a hinge plate (308), and a T-shaped plate (309) is hinged to the surface of the hinge plate (308) away from the slider (306). A positioning rod (310) is fixedly installed on the surface of the T-shaped plate (309). A positioning hole (311) matching the positioning rod (310) is opened on the surface of the vertical end of the L-shaped limiting plate (303). A pull rod (312) is fixedly installed on the surface of the T-shaped plate (309) away from the positioning rod (310).

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