Fire smoke detection alarm device and use method thereof

Abstract

The invention relates to the technical field of smoke detection and alarm, and discloses a fire smoke detection and alarm device and a use method thereof, the fire smoke detection and alarm device comprises an alarm shell, and the top of the alarm shell is fixedly connected with a fixed base. A second gear rotates to drive a rotating shaft to rotate, the rotating shaft rotates to drive a moving block rotationally connected to a reciprocating threaded groove to slide up and down along the reciprocating threaded groove, and the moving block slides up and down to drive an annular brush to slide up and down along the outer wall of a dustproof net cylinder; through the arrangement, bristles on the inner side of the annular brush can remove sundries attached to the outer wall of the dustproof net cylinder, on one hand, the annular brush can scrape water drops attached to the surface of the dustproof net cylinder, and on the other hand, the annular brush can remove catkins and other sundries on the surface of the dustproof net cylinder; the air holes in the dustproof net cylinder are prevented from being blocked by sundries meeting water, so that the sundries are prevented from hindering smoke collection of the alarm device.

Description

Technical Field

[0001] The present invention relates to the technical field of smoke detection and alarm, and particularly to a fire smoke detection and alarm device and its usage method. Background Technique

[0002] In order to prevent the occurrence of fires, people will install various fire smoke detection and alarm devices indoors. Usually, during the use of a fire smoke detection and alarm device, external air is actively sucked into the device for detection and alarm.

[0003] Under the existing technology, fire smoke alarm devices are usually fixedly installed on the roof of a house. In the special environment of the southern humid weather, the air humidity is relatively high, and usually water vapor will condense on the alarm device on the roof and then flow into the device, damaging the alarm circuit, thus causing the fire smoke alarm to lose its alarm function. Summary of the Invention

[0004] The purpose of the present invention is to provide a fire smoke detection and alarm device and its usage method to solve the problems raised in the above background technique.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions: The present invention is a fire smoke detection and alarm device and its usage method, including an alarm housing. A fixed base is fixedly connected to the top of the alarm housing. A plurality of fixing blocks are fixedly connected to the top side wall of the fixed base. A plurality of connecting blocks are fixedly connected to the bottom inner wall of the alarm housing. The bottom of the connecting block is fixedly connected to an alarm bottom cover. A plurality of sound holes are opened at the bottom of the alarm bottom cover. It further includes: A smoke collection mechanism, which includes a dust-proof net cylinder, a sensor, and an air extraction component for smoke collection; The air extraction component includes a fixing frame fixedly connected to the top of the alarm housing. A driving motor is fixedly connected to the bottom of the fixing frame.

[0006] Further, the air extraction component further includes an output shaft fixedly connected to the output end of the driving motor. A suction fan is fixedly connected to the end of the output shaft away from the driving motor. A plurality of support columns are fixedly connected to the top of the alarm bottom cover. The bottom of the dust-proof net cylinder is fixedly connected to the top of the alarm bottom cover. The top of the support column is fixedly connected to the bottom of the sensor.

[0007] Further, a cleaning mechanism is arranged inside the alarm housing. The cleaning mechanism includes a sealing plate fixedly connected to the inner wall of the alarm housing. A first gear is fixedly connected to the middle of the output shaft.

[0008] Furthermore, the cleaning mechanism also includes a plurality of rotating shafts that rotate and penetrate the sealing plate, the top of the rotating shaft is fixedly connected with gear 2, the sealing plate and gear 2 are arranged on the same horizontal line, and gear 2 is meshed with gear 1.

[0009] Furthermore, the cleaning mechanism also includes a reciprocating thread groove provided at one end of the rotating shaft away from the second gear, and a limiting ring is fixedly connected to one end of the rotating shaft close to the sealing plate.

[0010] Furthermore, the cleaning mechanism also includes a moving block rotatably connected to the inside of the reciprocating thread groove, an annular brush is fixedly connected to the inner side of the moving block, a plurality of bristles are arranged on the inner wall of the annular brush away from the moving block, and the bristles on one side of the annular brush are tightly attached to the outer wall of the dustproof mesh tube.

[0011] Furthermore, an adsorption mechanism is provided at the bottom of gear one, a plurality of connecting rods are fixedly connected to the bottom of gear one, an end of the connecting rod away from gear one is rotatably connected to a plurality of rotating columns, and a plurality of guide grooves are opened on the side wall of the rotating column.

[0012] Furthermore, the adsorption mechanism is fixedly connected to the sponge sleeve on the side wall of the rotating column, the sponge sleeve is in close contact with the inner wall of the dustproof net cylinder, and the inner wall of the dustproof net cylinder is provided with a plurality of extrusion protrusions.

[0013] Furthermore, the side wall of the alarm shell is provided with an auxiliary mechanism, which includes a protective cover fixedly connected to the side wall of the alarm shell, a plurality of air outlets are opened on the side wall of the alarm shell close to one end of the protective cover, and a plurality of collecting holes are opened on the top of the protective cover.

[0014] The method for using the fire smoke detection alarm device includes the following steps: Step 1: The alarm device extracts airflow, the output end of the drive motor rotates to drive the output shaft to rotate, the output shaft rotates to drive the suction fan to rotate, the suction fan rotates to drive the air at the bottom of the suction fan to flow upward, and at this time, the airflow near the bottom of the alarm housing passes through the dustproof mesh tube and enters the alarm housing; Step 2: Clean the debris. When there are a lot of debris attached to the outer surface of the dustproof net cylinder, the output shaft rotates to drive gear 1 to rotate, the rotation of gear 1 drives gear 2 to rotate, the rotation of gear 2 drives the rotating shaft to rotate, the rotation of the rotating shaft drives the moving block connected to the reciprocating thread groove to slide up and down along the reciprocating thread groove, and the moving block slides up and down to drive the annular brush to slide up and down along the outer wall of the dustproof net cylinder; Step 3: Absorbing water droplets, the output shaft rotates to drive gear 1 to rotate, the gear 1 rotates to drive the connecting rod to rotate, the connecting rod rotates to drive the rotating column to rotate with the output shaft as the axis, and the rotating column drives the sponge sleeve to roll along the inner wall of the dustproof net tube. This arrangement is conducive to the sponge sleeve to absorb the water droplets inside the air holes of the dustproof net tube; Step 4: Assist smoke collection. The suction fan sucks the airflow through the bottom of the alarm shell and then discharges it through the air outlet on the top of the alarm shell. At this time, setting a protective cover is helpful to prevent water droplets on the roof from dripping directly onto the alarm shell. In addition, when the airflow is discharged from the air outlet, it is helpful to blow the water droplets on the inner wall of the bottom of the protective cover away from the side of the protective cover away from the alarm shell. Since the airflow speed on the inner wall of the bottom of the protective cover is greater than the airflow speed on the top of the protective cover, the airflow on the roof will enter the bottom of the protective cover through the collection hole. At this time, part of the airflow will enter the inside of the alarm shell through the bottom of the alarm shell.

[0015] The present invention has the following beneficial effects: (1) The present invention provides a cleaning mechanism. When there are a lot of debris attached to the outer surface of the dust-proof net tube, the output shaft rotates to drive gear one to rotate, the rotation of gear one drives gear two to rotate, the rotation of gear two drives the rotating shaft to rotate, the rotation of the rotating shaft drives the moving block rotatably connected to the reciprocating thread groove to slide up and down along the reciprocating thread groove, the moving block slides up and down to drive the annular brush to slide up and down along the outer wall of the dust-proof net tube. This arrangement is conducive to the bristles on the inner side of the annular brush to clean the debris attached to the outer wall of the dust-proof net tube. On the one hand, it is conducive to the annular brush to scrape off the water droplets attached to the surface of the dust-proof net tube. On the other hand, it is conducive to the annular brush to clean the debris such as catkins on the surface of the dust-proof net tube, so as to prevent the debris from clogging the air holes on the dust-proof net tube when it encounters water, thereby preventing the debris from hindering the alarm device from collecting smoke.

[0016] (2) When the fire smoke detection alarm device of the present invention is used, the device is first fixedly installed on the roof through a plurality of fixing blocks on the top of the fixed base. When the device is activated, the output end of the driving motor rotates to drive the output shaft to rotate, and the rotation of the output shaft drives the suction fan to rotate. The rotation of the suction fan drives the air at the bottom of the suction fan to flow upward. At this time, the airflow near the bottom of the alarm shell passes through the dustproof mesh tube and enters the alarm shell. On the one hand, this arrangement is conducive to accelerating the airflow at the bottom of the alarm shell, thereby making the smoke collection around the bottom of the alarm shell faster, thereby improving the smoke collection speed of the alarm device. On the other hand, the airflow through the dustproof mesh tube will filter out larger particles of dust and other debris, preventing the debris from entering the alarm shell, thereby avoiding external factors from causing false triggering or even damage to the sensor, thereby improving the stability of the alarm device.

[0017] (3) In the present invention, by providing an adsorption mechanism, when it is a humid day with high humidity, the air humidity is usually higher than 90%. At this time, a large amount of water droplets adhere to the inside of the small holes on the dust-proof net cylinder. The output shaft rotates to drive the first gear to rotate, the first gear rotates to drive the connecting rod to rotate, and the connecting rod rotates to drive the rotating column to rotate around the output shaft as the axis. At this time, the rotating column drives the sponge sleeve to roll along the inner wall of the dust-proof net cylinder. This setting is beneficial for the sponge sleeve to absorb the water droplets inside the ventilation holes of the dust-proof net cylinder, thereby ensuring good air permeability of the dust-proof net cylinder. In addition, when the sponge sleeve rolls around the inner wall of the dust-proof net cylinder, it will be squeezed by the extrusion bumps on the inner wall of the dust-proof net cylinder. When the sponge sleeve is squeezed by the extrusion bumps, the water inside the sponge sleeve will flow along the diversion groove on the rotating column to the alarm bottom cover at the bottom of the rotating column, and the water is discharged through the sound holes on the alarm bottom cover; this setting is beneficial for ensuring that the sponge sleeve maintains good water absorption.

[0018] (4) In the present invention, by providing an auxiliary mechanism, when the device is fixedly installed on the roof, the suction fan sucks the air flow through the bottom of the alarm housing and then discharges it through the air outlet at the top of the alarm housing. At this time, the provision of the protective cover is beneficial for preventing the water droplets on the roof from directly dripping on the alarm housing. In addition, when the air flow is discharged from the air outlet, it is beneficial for blowing the water droplets on the inner wall of the bottom of the protective cover to flow away along the side of the protective cover away from the alarm housing; since the air flow speed on the inner wall of the bottom of the protective cover is greater than the air flow speed on the top of the protective cover, the air flow on the roof will enter the bottom of the protective cover through the collection holes. At this time, part of the air flow enters the alarm housing through the bottom of the alarm housing. Since the smoke often fills the roof first, this setting is beneficial for increasing the smoke absorption range of the device, accelerating the rapid entry of the air flow on the roof into the alarm housing, and thus accelerating the response speed of the alarm device to the smoke.

[0019] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the air flow structure of the present invention; Figure 3 It is a schematic diagram of the partial cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of the internal structure of the alarm housing of the present invention; Figure 5 Schematic diagram of the overall structure of the cleaning mechanism of the present invention; Figure 6 Schematic diagram of the partial structure of the cleaning mechanism of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of A in; Figure 8 Schematic diagram of the internal structure of the dust-proof net cylinder of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of B in; Figure 10 Flow chart of the usage method of the present invention.

[0022] In the drawings, the list of components represented by each reference numeral is as follows: In the figure: 1, alarm housing; 11, fixed base; 12, fixed block; 13, connecting block; 14, alarm bottom cover; 15, sound hole; 2, smoke collection mechanism; 201, fixed frame; 202, drive motor; 203, output shaft; 204, suction fan; 205, dust-proof net cylinder; 206, support column; 207, sensor; 3, cleaning mechanism; 301, sealing plate; 302, gear one; 303, rotating shaft; 304, gear two; 305, reciprocating thread groove; 306, limiting ring; 307, moving block; 308, annular brush; 4, adsorption mechanism; 401, connecting rod; 402, rotating column; 403, diversion groove; 404, sponge sleeve; 405, extrusion bump; 5, auxiliary mechanism; 501, protective cover; 502, air outlet; 503, collection hole. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Example 1, please refer to Figures 1 - 10 As shown, the present invention is a fire smoke detection and alarm device and its usage method, including an alarm housing 1. A fixed base 11 is fixedly connected to the top of the alarm housing 1. A plurality of fixed blocks 12 are fixedly connected to the top side wall of the fixed base 11. A plurality of connecting blocks 13 are fixedly connected to the bottom inner wall of the alarm housing 1. The bottom of the connecting block 13 is fixedly connected to an alarm bottom cover 14. A plurality of sound holes 15 are opened at the bottom of the alarm bottom cover 14. It further includes: Smoke collection mechanism 2, the smoke collection mechanism 2 includes a dust-proof net cylinder 205, a sensor 207, and an air extraction component for smoke collection; The air extraction component includes a fixing frame 201 fixedly connected to the top of the alarm housing 1, and a driving motor 202 is fixedly connected to the bottom of the fixing frame 201.

[0025] The air extraction component further includes an output shaft 203 fixedly connected to the output end of the driving motor 202. One end of the output shaft 203 away from the driving motor 202 is fixedly connected to a suction fan 204. A plurality of support columns 206 are fixedly connected to the top of the bottom cover 14 of the alarm. The bottom of the dust-proof net cylinder 205 is fixedly connected to the top of the bottom cover 14 of the alarm, and the top of the support column 206 is fixedly connected to the bottom of the sensor 207. The function of this mechanism is that when using this fire smoke detection and alarm device, first, the device is fixedly installed on the roof through a plurality of fixing blocks 12 on the top of the fixing base 11. When the device is enabled, the output end of the driving motor 202 rotates to drive the output shaft 203 to rotate, and the output shaft 203 rotates to drive the suction fan 204 to rotate. The suction fan 204 rotates to drive the air at the bottom of the suction fan 204 to flow upward. At this time, the air flow near the bottom of the alarm housing 1 enters the interior of the alarm housing 1 through the dust-proof net cylinder 205. Such a setting is beneficial in accelerating the air flow at the bottom of the alarm housing 1 on the one hand, so that the smoke around the bottom of the alarm housing 1 can be collected more quickly, improving the smoke collection speed of the alarm device. On the other hand, the air flow passing through the dust-proof net cylinder 205 will filter out larger particle dust and other sundries, preventing the sundries from entering the interior of the alarm housing 1, thereby avoiding false triggering or even damage to the sensor 207 caused by external factors and improving the stability performance of the alarm device.

[0026] A cleaning mechanism 3 is arranged inside the alarm housing 1. The cleaning mechanism 3 includes a sealing plate 301 fixedly connected to the inner wall of the alarm housing 1, and a first gear 302 is fixedly connected to the middle of the output shaft 203.

[0027] The cleaning mechanism 3 further includes a plurality of rotating shafts 303 rotatably penetrating through the sealing plate 301. A second gear 304 is fixedly connected to the top of the rotating shaft 303. The sealing plate 301 and the second gear 304 are on the same horizontal line, and the second gear 304 meshes with the first gear 302.

[0028] The cleaning mechanism 3 further includes a reciprocating thread groove 305 opened at one end of the rotating shaft 303 away from the second gear 304, and a limiting ring 306 is fixedly connected to one end of the rotating shaft 303 close to the sealing plate 301.

[0029] The cleaning mechanism 3 also includes a moving block 307 rotatably connected to the inside of the reciprocating thread groove 305, and an annular brush 308 is fixedly connected to the inner side of the moving block 307. A plurality of bristles are arranged on the inner wall of the annular brush 308 away from the moving block 307, and the bristles on one side of the annular brush 308 are in close contact with the outer wall of the dust-proof net cylinder 205. The function of this mechanism is to set the cleaning mechanism 3, and when a lot of debris is attached to the outer surface of the dust-proof net cylinder 205, the output shaft 203 rotates to drive the gear 1 302 to rotate, the gear 1 302 rotates to drive the gear 2 304 to rotate, the gear 2 304 rotates to drive the rotating shaft 303 to rotate, and the rotating shaft 303 rotates to drive the reciprocating thread groove The movable block 307 rotatably connected to 305 slides up and down along the reciprocating thread groove 305. The movable block 307 slides up and down to drive the annular brush 308 to slide up and down along the outer wall of the dustproof mesh tube 205. This arrangement is conducive to the bristles on the inner side of the annular brush 308 to remove the debris attached to the outer wall of the dustproof mesh tube 205. On the one hand, it is conducive to the annular brush 308 to scrape off the water droplets attached to the surface of the dustproof mesh tube 205. On the other hand, it is conducive to the annular brush 308 to remove the willow catkins and other debris on the surface of the dustproof mesh tube 205, so as to prevent the debris from clogging the air holes on the dustproof mesh tube 205 when encountering water, thereby avoiding the debris from hindering the alarm device from collecting smoke.

[0030] Embodiment 2 is different from Embodiment 1 in that: Figures 1 - 10 As shown, an adsorption mechanism 4 is provided at the bottom of the gear 1 302, and a plurality of connecting rods 401 are fixedly connected to the bottom of the gear 1 302. The end of the connecting rod 401 away from the gear 1 302 is rotatably connected to a plurality of rotating columns 402, and a plurality of guide grooves 403 are opened on the side wall of the rotating column 402.

[0031] The adsorption mechanism 4 is fixedly connected to the sponge sleeve 404 on the side wall of the rotating column 402. The sponge sleeve 404 is in close contact with the inner wall of the dust-proof net cylinder 205. A number of extrusion bumps 405 are provided on the inner wall of the dust-proof net cylinder 205. The function of this mechanism is to set the adsorption mechanism 4. When it is a humid and rainy day, the air humidity is usually higher than 90%. At this time, a large number of water droplets adhere to the inside of the small holes on the dust-proof net cylinder 205. The output shaft 203 rotates to drive the first gear 302 to rotate. The first gear 302 rotates to drive the connecting rod 401 to rotate. The connecting rod 401 rotates to drive the rotating column 402 to rotate around the output shaft 203 as the axis. At this time, the rotating column 402 drives the sponge sleeve 404 to roll along the inner wall of the dust-proof net cylinder 205. This setting is beneficial for the sponge sleeve 404 to absorb the water droplets inside the ventilation holes of the dust-proof net cylinder 205, so as to ensure good air permeability of the dust-proof net cylinder 205. In addition, when the sponge sleeve 404 rolls around the inner wall of the dust-proof net cylinder 205, it will be squeezed by the extrusion bumps 405 on the inner wall of the dust-proof net cylinder 205. When the sponge sleeve 404 is squeezed by the extrusion bumps 405, the water inside the sponge sleeve 404 will flow along the diversion groove 403 on the rotating column 402 to the alarm bottom cover 14 at the bottom of the rotating column 402, and the water is discharged through the sound hole 15 on the alarm bottom cover 14; this setting is beneficial for ensuring that the sponge sleeve 404 maintains good water absorption.

[0032] An auxiliary mechanism 5 is provided on the side wall of the alarm housing 1. The auxiliary mechanism 5 includes a protective cover 501 fixedly connected to the side wall of the alarm housing 1. A number of air outlets 502 are provided on the side wall of the alarm housing 1 near one end of the protective cover 501. A number of collection holes 503 are provided on the top of the protective cover 501. The function of this mechanism is to set the auxiliary mechanism 5. When the device is fixedly installed on the roof, the suction fan 204 sucks the air flow through the bottom of the alarm housing 1 and then discharges it through the air outlets 502 at the top of the alarm housing 1. At this time, setting the protective cover 501 is beneficial for preventing the water droplets on the roof from directly dripping on the alarm housing 1. In addition, when the air flow discharges from the air outlets 502, it is beneficial for blowing the water droplets on the inner wall of the bottom of the protective cover 501 to flow away along the side of the protective cover 501 away from the alarm housing 1; since the air flow speed on the inner wall of the bottom of the protective cover 501 is greater than the air flow speed on the top of the protective cover 501, the air flow on the roof will enter the bottom of the protective cover 501 through the collection holes 503. At this time, part of the air flow enters the inside of the alarm housing 1 through the bottom of the alarm housing 1. Since the smoke often fills the roof first, this setting is beneficial for increasing the smoke absorption range of the device, accelerating the rapid entry of the air flow on the roof into the inside of the alarm housing 1, and thus accelerating the response speed of the alarm device to the smoke.

[0033] The usage method of this fire smoke detection and alarm device includes the following steps: Step 1: The alarm device extracts airflow, the output end of the driving motor 202 rotates to drive the output shaft 203 to rotate, the output shaft 203 rotates to drive the suction fan 204 to rotate, the suction fan 204 rotates to drive the air at the bottom of the suction fan 204 to flow upward, and at this time, the airflow near the bottom of the alarm housing 1 passes through the dustproof mesh tube 205 and enters the alarm housing 1; Step 2: Cleaning up the debris. When there are a lot of debris attached to the outer surface of the dustproof net cylinder 205, the output shaft 203 rotates to drive the gear 1 302 to rotate, the gear 1 302 rotates to drive the gear 2 304 to rotate, the gear 2 304 rotates to drive the rotating shaft 303 to rotate, the rotating shaft 303 rotates to drive the moving block 307 rotatably connected to the reciprocating thread groove 305 to slide up and down along the reciprocating thread groove 305, and the moving block 307 slides up and down to drive the annular brush 308 to slide up and down along the outer wall of the dustproof net cylinder 205; Step 3: Absorbing water droplets, the output shaft 203 rotates to drive the gear 1 302 to rotate, the gear 1 302 rotates to drive the connecting rod 401 to rotate, the connecting rod 401 rotates to drive the rotating column 402 to rotate with the output shaft 203 as the axis, and the rotating column 402 drives the sponge cover 404 to roll along the inner wall of the dustproof net cylinder 205, so that the sponge cover 404 can absorb the water droplets inside the air holes of the dustproof net cylinder 205; Step 4: Assisting smoke collection, the suction fan 204 sucks the airflow through the bottom of the alarm housing 1, and then discharges it through the air outlet 502 at the top of the alarm housing 1. At this time, the protective cover 501 is provided to prevent water droplets on the roof from dripping directly onto the alarm housing 1. In addition, when the airflow is discharged from the air outlet 502, it is helpful to blow the water droplets on the bottom inner wall of the protective cover 501 away from the side of the protective cover 501 away from the alarm housing 1; because the airflow speed on the bottom inner wall of the protective cover 501 is greater than the airflow speed on the top of the protective cover 501, the airflow on the roof will enter the bottom of the protective cover 501 through the collection hole 503, and at this time part of the airflow will enter the inside of the alarm housing 1 through the bottom of the alarm housing 1.

[0034] A specific application of this embodiment is: When using this fire smoke detection and alarm device, first fix and install the device on the roof through several fixing blocks 12 at the top of the fixing base 11. When the device is enabled, the output end of the driving motor 202 rotates to drive the output shaft 203 to rotate. The rotation of the output shaft 203 drives the suction fan 204 to rotate. The rotation of the suction fan 204 drives the air at the bottom of the suction fan 204 to flow upward. At this time, the airflow near the bottom of the alarm housing 1 enters the interior of the alarm housing 1 through the dust-proof mesh cylinder 205. This setting is beneficial in accelerating the airflow at the bottom of the alarm housing 1 on the one hand, so that the smoke around the bottom of the alarm housing 1 can be collected more quickly, improving the smoke collection speed of the alarm device. On the other hand, the airflow passing through the dust-proof mesh cylinder 205 will filter out larger particulate dust and other debris, preventing the debris from entering the interior of the alarm housing 1, thereby avoiding false triggering or even damage to the sensor 207 caused by external factors and improving the stability of the alarm device; by setting the cleaning mechanism 3, when there is more debris attached to the outer surface of the dust-proof mesh cylinder 205, the rotation of the output shaft 203 drives the first gear 302 to rotate. The rotation of the first gear 302 drives the second gear 304 to rotate. The rotation of the second gear 304 drives the rotating shaft 303 to rotate. The rotation of the rotating shaft 303 drives the moving block 307 rotatably connected to the reciprocating thread groove 305 to slide up and down along the reciprocating thread groove 305. The up and down sliding of the moving block 307 drives the annular brush 308 to slide up and down along the outer wall of the dust-proof mesh cylinder 205. This setting is beneficial for the bristles inside the annular brush 308 to remove the debris attached to the outer wall of the dust-proof mesh cylinder 205. On the one hand, it is beneficial for the annular brush 308 to scrape off the water droplets attached to the surface of the dust-proof mesh cylinder 205. On the other hand, it is beneficial for the annular brush 308 to remove debris such as catkins on the surface of the dust-proof mesh cylinder 205, preventing the debris from blocking the air holes on the dust-proof mesh cylinder 205 when encountering water, thereby avoiding the debris from hindering the smoke collection of the alarm device; By setting the adsorption mechanism 4, when there is a southerly return day, the air humidity is usually higher than 90%. At this time, a large number of water droplets adhere to the inside of the small holes on the dust-proof net cylinder 205. The output shaft 203 rotates to drive the first gear 302 to rotate. The first gear 302 rotates to drive the connecting rod 401 to rotate. The connecting rod 401 rotates to drive the rotating column 402 to rotate around the output shaft 203 as the axis. At this time, the rotating column 402 drives the sponge sleeve 404 to roll along the inner wall of the dust-proof net cylinder 205. Such a setting is beneficial for the sponge sleeve 404 to absorb the water droplets inside the ventilation holes of the dust-proof net cylinder 205, so as to ensure good air permeability of the dust-proof net cylinder 205. In addition, when the sponge sleeve 404 rolls around the inner wall of the dust-proof net cylinder 205, it will be squeezed by the extrusion bump 405 on the inner wall of the dust-proof net cylinder 205. When the sponge sleeve 404 is squeezed by the extrusion bump 405, the water inside the sponge sleeve 404 will flow along the diversion groove 403 on the rotating column 402 to the alarm bottom cover 14 at the bottom of the rotating column 402, and the water is discharged through the sound hole 15 on the alarm bottom cover 14; such a setting is beneficial for ensuring that the sponge sleeve 404 maintains good water absorption; by setting the auxiliary mechanism 5, when the device is fixedly installed on the roof, the suction fan 204 sucks the air flow through the bottom of the alarm housing 1 and then discharges it through the air outlet 502 at the top of the alarm housing 1. At this time, by setting the protective cover 501, it is beneficial to prevent the water droplets on the roof from directly dripping on the alarm housing 1. In addition, when the air flow is discharged from the air outlet 502, it is beneficial to blow the water droplets on the inner wall of the bottom of the protective cover 501 to flow away along the side of the protective cover 501 away from the alarm housing 1; since the air flow speed on the inner wall of the bottom of the protective cover 501 is greater than the air flow speed on the top of the protective cover 501, the air flow on the roof will enter the bottom of the protective cover 501 through the collection hole 503. At this time, part of the air flow will enter the inside of the alarm housing 1 through the bottom of the alarm housing 1. Since the smoke often fills the roof first, such a setting is beneficial to increase the smoke absorption range of the device and accelerate the rapid entry of the air flow on the roof into the inside of the alarm housing 1, thereby accelerating the response speed of the alarm device to the smoke.

[0035] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor limit the invention to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments to better explain the principle and practical application of the present invention, so that those skilled in the art in the technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A fire smoke detection and alarm device, comprising an alarm housing (1). A fixed base (11) is fixedly connected to the top of the alarm housing (1). Several fixing blocks (12) are fixedly connected to the top of the side wall of the fixed base (11). Several connecting blocks (13) are fixedly connected to the bottom inner wall of the alarm housing (1). An alarm bottom cover (14) is fixedly connected to the bottom of the connecting block (13). Several sound holes (15) are formed in the bottom of the alarm bottom cover (14), and it is characterized in that, It also includes: A smoke collection mechanism (2), the smoke collection mechanism (2) includes a dust-proof net cylinder (205), a sensor (207), and an air extraction component for smoke collection; The air extraction component includes a fixed frame (201) fixedly connected to the top of the alarm housing (1), and a drive motor (202) is fixedly connected to the bottom of the fixed frame (201).

2. The fire smoke detection and alarm device according to claim 1, wherein: The air extraction component further includes an output shaft (203) fixedly connected to the output end of the drive motor (202), a suction fan (204) is fixedly connected to one end of the output shaft (203) away from the drive motor (202), and a plurality of support columns (206) are fixedly connected to the top of the bottom cover (14) of the alarm. The bottom of the dust-proof net cylinder (205) is fixedly connected to the top of the bottom cover (14) of the alarm, and the top of the support column (206) is fixedly connected to the bottom of the sensor (207).

3. The fire smoke detection and alarm device according to claim 2, wherein: A cleaning mechanism (3) is arranged inside the alarm housing (1), the cleaning mechanism (3) includes a sealing plate (301) fixedly connected to the inner wall of the alarm housing (1), and a first gear (302) is fixedly connected to the middle of the output shaft (203).

4. A fire smoke detection and alarm device according to claim 3, characterized in that: The cleaning mechanism (3) further includes a plurality of rotating shafts (303) rotatably penetrating through the sealing plate (301), a second gear (304) is fixedly connected to the top of the rotating shaft (303), the sealing plate (301) and the second gear (304) are arranged on the same horizontal line, and the second gear (304) meshes with the first gear (302).

5. An automatic fire smoke detecting and alarming device according to claim 4, characterized in that: The cleaning mechanism (3) further includes a reciprocating thread groove (305) opened at one end of the rotating shaft (303) away from the second gear (304), and a limiting ring (306) is fixedly connected to one end of the rotating shaft (303) close to the sealing plate (301).

6. The fire smoke detection and alarm device according to claim 5, characterized in that: The cleaning mechanism (3) further includes a moving block (307) rotatably connected inside the reciprocating thread groove (305), a ring brush (308) is fixedly connected to the inner side of the moving block (307), a plurality of bristles are arranged on the inner wall of one side of the ring brush (308) away from the moving block (307), and the bristles on one side of the ring brush (308) are in close contact with the outer wall of the dust-proof net cylinder (205).

7. An automatic fire alarm device according to claim 6, wherein: An adsorption mechanism (4) is arranged at the bottom of the first gear (302), a plurality of connecting rods (401) are fixedly connected to the bottom of the first gear (302), a plurality of rotating columns (402) are rotatably connected to one end of the connecting rod (401) away from the first gear (302), and a plurality of diversion grooves (403) are opened on the side wall of the rotating column (402).

8. An automatic fire alarm device according to claim 7, characterized in that: The adsorption mechanism (4) is fixedly connected with a sponge sleeve (404) on the side wall of the rotating column (402), the sponge sleeve (404) is in close contact with the inner wall of the dust-proof net cylinder (205), and a plurality of extrusion bumps (405) are arranged on the inner wall of the dust-proof net cylinder (205).

9. The fire smoke detection and alarm device according to claim 8, wherein: The side wall of the alarm housing (1) is provided with an auxiliary mechanism (5), the auxiliary mechanism (5) comprising a protective cover (501) fixedly connected to the side wall of the alarm housing (1), a plurality of air outlets (502) are provided on the side wall of the alarm housing (1) close to one end of the protective cover (501), and a plurality of collecting holes (503) are provided on the top of the protective cover (501).

10. The usage method of the fire smoke detection and alarm device, which adopts the fire smoke detection and alarm device as described in claim 9, is characterized in that, It includes the following steps: Step 1: The alarm device extracts airflow, the output end of the driving motor (202) rotates to drive the output shaft (203) to rotate, the output shaft (203) rotates to drive the suction fan (204), the suction fan (204) rotates to drive the air at the bottom of the suction fan (204) to flow upward, and at this time, the airflow near the bottom of the alarm housing (1) passes through the dustproof mesh tube (205) and enters the alarm housing (1); Step 2: cleaning debris. When a lot of debris is attached to the outer surface of the dustproof net cylinder (205), the output shaft (203) rotates to drive the gear 1 (302) to rotate. The gear 1 (302) rotates to drive the gear 2 (304). The gear 2 (304) rotates to drive the rotating shaft (303). The rotating shaft (303) rotates to drive the moving block (307) rotatably connected to the reciprocating thread groove (305) to slide up and down along the reciprocating thread groove (305). The moving block (307) slides up and down to drive the annular brush (308) to slide up and down along the outer wall of the dustproof net cylinder (205). Step 3: Absorbing water droplets, the output shaft (203) rotates to drive the gear 1 (302) to rotate, the gear 1 (302) rotates to drive the connecting rod (401) to rotate, the connecting rod (401) rotates to drive the rotating column (402) to rotate with the output shaft (203) as the axis, at this time, the rotating column (402) drives the sponge sleeve (404) to roll along the inner wall of the dustproof net cylinder (205), so that the sponge sleeve (404) can absorb the water droplets inside the air holes of the dustproof net cylinder (205); Step 4: Assisting smoke collection, the suction fan (204) sucks the airflow through the bottom of the alarm housing (1), and then discharges it through the air outlet (502) at the top of the alarm housing (1). At this time, the protective cover (501) is provided to prevent water droplets on the roof from directly dripping onto the alarm housing (1). In addition, when the airflow is discharged from the air outlet (502), it is helpful to blow the water droplets on the bottom inner wall of the protective cover (501) away from the side of the alarm housing (1) along the protective cover (501); because the airflow speed on the bottom inner wall of the protective cover (501) is greater than the airflow speed on the top of the protective cover (501), the airflow on the roof will enter the bottom of the protective cover (501) through the collection hole (503), and at this time, part of the airflow will enter the inside of the alarm housing (1) through the bottom of the alarm housing (1).

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