CN211087460U - Smoke-sensitive fire detector easy to maintain - Google Patents

Abstract

The utility model provides an easy smoke fire detector who maintains belongs to safety alarm equipment's technical field. An easily maintained smoke fire detector comprises a base, a middle cover, an upper cover, a conductive structure, a PCB photoelectric structure and a photoelectric detection cavity assembly; the utility model discloses divide into fixed lid and the movable cover that can make up with the upper cover, fixed lid and well lid rigid coupling, the movable cover can be dismantled with fixed lid and be connected, and the upper portion of photoelectric detection chamber subassembly stretches out outside fixed lid and stretch into in the movable cover, be equipped with the cover in the movable cover and locate the outer filter pulp in upper portion that photoelectric detection chamber subassembly stretches out fixed lid, can not only weaken the impact of air current under the wind big condition, improve monitoring accuracy, also can filter the pollutant in the air, further improve monitoring accuracy, and the life of device has still been prolonged, reduce service environment to the restriction of device, and composite structure's upper cover can also be convenient for wash and change filter pulp, do benefit to the maintenance of device, improve the adaptability of device.

Description

Smoke-sensitive fire detector easy to maintain

Technical Field

The utility model relates to a safety alarm equipment's technical field specifically is a smoke fire detector who relates to an easy maintenance.

Background

The smoke fire detector can timely acquire fire information and send out an alarm, so that the smoke fire detector is widely used for fire prevention monitoring of a space.

On the vehicles running at high speed such as subways and high-speed railways, strong air flow can be generated in the running process, so that the wind in a carriage is large, the air flow easily directly impacts a photoelectric detection cavity assembly of the smoke fire detector, and the problem of monitoring error or failure is caused. In addition, as the vehicles running at high speed such as subways and high-speed railways have more pollutants in public spaces with larger pedestrian flow, the smoke fire detector is polluted, the judgment of a detector signal is influenced, and the maintenance period and the service life of the smoke fire detector are shortened.

In conclusion, the existing smoke fire detector has the problems of high limit degree in severe use environment, easy pollution and short maintenance time.

Disclosure of Invention

To the above-mentioned problem that exists among the prior art, it aims at providing a smoke fire detector who easily maintains now, in order to set up combination formula upper cover, and be provided with the filter pulp in the upper cover, make the filter pulp cover locate outside the photoelectric detection chamber subassembly, can not only adapt to the space of high-speed motion, prevent the impact of air current, also can filter large granule pollutant simultaneously, the contaminated degree of photoelectric detection chamber subassembly has been slowed down, not only improved smoke fire detector's monitoring result's accuracy, smoke fire detector's maintenance life has also been prolonged, service environment's restriction has been reduced, the upper cover of combination formula has made things convenient for washing and the change to the filter pulp simultaneously, be convenient for maintain smoke fire detector, product suitability is higher.

The specific technical scheme is as follows:

a smoke fire detector for easy maintenance having features comprising: the base is provided with a middle cover, the middle cover is provided with an upper cover, the conductive structure, the PCB photoelectric structure and the photoelectric detection cavity component are sequentially arranged in a space formed by the base, the middle cover and the upper cover along the direction from the base to the upper cover, the conductive structure is electrically connected with the PCB photoelectric structure, the lower part of the photoelectric detection cavity component is sleeved outside the PCB photoelectric structure, and the upper cover is of a combined structure, wherein,

the upper cover is provided with the mesopore including fixed lid and movable cover in the middle of the fixed lid, and covers in fixed lid is fixed in, and the lower part of photoelectric detection chamber subassembly sets up in fixed lid, and outside the mesopore was stretched out on the upper portion of photoelectric detection chamber subassembly, fixed covering can be dismantled and be connected with the movable cover, is provided with the filter pulp on the inner wall of movable cover, and filters the cotton cover and locates the photoelectric detection chamber subassembly and stretch out outside the upper portion of fixed lid.

The easily maintained smoke fire detector comprises a fixed cover, a movable cover and a clamping groove, wherein the fixed cover is connected with the movable cover through a buckle, the clamping groove is arranged in the fixed cover, and the clamping block is arranged on the movable cover.

The above-mentioned easy-to-maintain smoke fire detector, wherein, is provided with the caulking groove on the top surface of fixed lid, has seted up a plurality of draw-in groove on the inner wall of caulking groove, and each draw-in groove all is the setting of "L" font, and each draw-in groove all includes vertical insertion section and horizontal chucking section, and the insertion section sets up along the direction of base to the upper cover, and the outline line of horizontal section along the inner wall of caulking groove is around establishing.

The easily maintained smoke fire detector is characterized in that a plurality of limiting blocking ribs are arranged in the caulking groove and in a non-clamping groove area, and the limiting blocking ribs are transversely arranged between the inner wall and the outer wall of the caulking groove.

The above-mentioned easy smoke fire detector who maintains, wherein, the bottom shape of movable cover is unanimous with the caulking groove shape and is circular, simultaneously, the bottom of movable cover is seted up with spacing fender muscle one-to-one dodge the breach, and is provided with a plurality of convex fixture blocks with the draw-in groove one-to-one on the inner wall of the bottom of movable cover.

The easily-maintained smoke fire detector is characterized in that the cross section of the movable cover is in a circular ring shape, the diameter of the cross section of the top of the movable cover is smaller than that of the cross section of the bottom of the movable cover, and the contour line of the longitudinal section of the side wall of the movable cover is in an arc shape.

The above-mentioned easy smoke fire detector who maintains, wherein, the leaded light hole that runs through is seted up at the top of movable cover, and just lies in its top in the inboard of movable cover and is provided with the leaded light spout, and the one end and the leaded light hole intercommunication of leaded light spout.

Above-mentioned easy smoke fire detector of maintaining, wherein, be annular array and seted up a plurality of smoke inlet on the lateral wall of movable cover, and smoke inlet quantity is 8 or 16.

The above-mentioned easy smoke fire detector who maintains, wherein, the inboard of the lateral wall of movable cover just is located and all is provided with the fixed fender muscle to the inboard salient of movable cover between every two adjacent cigarette holes.

Foretell easy smoke fire detector who maintains, wherein, filter pulp is the annular setting, and filter pulp's the outside is supported and is leaned on fixed fender muscle, and filter pulp's inboard supports and leans on outside the upper portion of photoelectric detection chamber subassembly.

The positive effects of the technical scheme are as follows:

foretell easy maintenance's smoke fire detector, the upper cover that will sense smoke fire detector is the integrated configuration setting, divide into fixed lid and movable cover, fixed lid and well lid fixed connection, movable cover detachably is connected with fixed lid, and the upper portion of photoelectric detection chamber subassembly stretches out outside fixed lid and stretches into in the movable cover, be provided with the filter pulp in the movable cover simultaneously, and the filter pulp cover is located photoelectric detection chamber subassembly and stretches out outside the upper portion of fixed lid, can not only avoid the direct-blow of wind, weaken the impact of air current, also can filter the pollutant in the air simultaneously, not only improved the monitoring precision, the life of device has still been prolonged, service environment's restriction has been reduced, the upper cover structure that also can pass through the combination formula simultaneously is convenient for wash and change the filter pulp, do benefit to the maintenance of device, structure adaptability is higher.

Drawings

FIG. 1 is a block diagram of an embodiment of an easy to maintain smoke fire detector of the present invention;

FIG. 2 is an exploded view of a preferred embodiment of the present invention;

FIG. 3 is a structural diagram of a fixing cover according to a preferred embodiment of the present invention;

FIG. 4 is a schematic view of a movable lid according to a preferred embodiment of the present invention;

fig. 5 is a view showing an installation structure of the filter cotton according to a preferred embodiment of the present invention.

In the drawings: 1. a base; 2. a middle cover; 3. an upper cover; 31. a fixed cover; 32. a movable cover; 311. a mesopore; 312. caulking grooves; 3121. a card slot; 3122. limiting and blocking ribs; 321. avoiding the notch; 322. a clamping block; 323. a light guide hole; 324. a light guide chute; 325. a smoke inlet hole; 326. fixing a blocking rib; 4. a conductive structure; 5. a PCB photoelectric structure; 6. a photodetection cavity assembly; 7. filtering cotton; 8. a light guide pillar.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the following embodiments are specifically described with reference to fig. 1 to 5, but the following contents are not intended to limit the present invention.

FIG. 1 is a block diagram of an embodiment of an easy to maintain smoke fire detector of the present invention; fig. 2 is an exploded view of a preferred embodiment of the present invention. As shown in fig. 1 and 2, the present embodiment provides a smoke fire detector that is easy to maintain, including: base 1, well lid 2, upper cover 3, conducting structure 4, PCB photoelectric structure 5 and photoelectric detection chamber subassembly 6 are equipped with well lid 2 on the base 1, are equipped with upper cover 3 on the well lid 2 for base 1, well lid 2 and upper cover 3 constitute an overall structure, as the shell of smoke fire detector. And, along the direction of base 1 to upper cover 3, conducting structure 4, PCB photoelectric structure 5 and photoelectric detection chamber subassembly 6 set gradually in base 1, in the space that well lid 2 and upper cover 3 are constituteed, the arrangement of internal circuit structure and optical structure has been realized, and conducting structure 4 is connected with PCB photoelectric structure 5 electricity, supply power through conducting structure 4 and external supply circuit intercommunication, and simultaneously, PCB photoelectric structure 5 is located to photoelectric detection chamber subassembly 6's lower part cover, the structural foundation is provided for optical monitoring and judgement, and, upper cover 3 is modular structure, do benefit to the dismouting of upper cover 3, make the partial space of upper cover 3 openable, do benefit to the maintenance in later stage, the structure sets up more rationally.

FIG. 3 is a structural diagram of a fixing cover according to a preferred embodiment of the present invention; fig. 4 is a structural diagram of a movable lid according to a preferred embodiment of the present invention. As shown in fig. 1 to 4, the upper cover 3 further includes a fixed cover 31 and a movable cover 32, a middle hole 311 is disposed in the middle of the fixed cover 31, the fixed cover 31 is fixed on the middle cover 2, the lower portion of the photodetection chamber assembly 6 is disposed in the fixed cover 31, and the upper portion of the photodetection chamber assembly 6 extends out of the middle hole 311, so that smoke entering the movable cover 32 can enter through the upper portion of the photodetection chamber assembly 6. And, can dismantle on the fixed lid 31 and be connected with the movable lid 32, be provided with filter pulp 7 on the inner wall of movable lid 32, and filter pulp 7 cover is located photoelectric detection chamber subassembly 6 and is stretched out outside the upper portion of fixed lid 31, make the cigarette that enters into in the photoelectric detection chamber subassembly 6 all need pass through the filtration of filter pulp 7, not only adapted to the service environment of strong wind through filter pulp 7, the direct impact of air current has been avoided, improve monitoring accuracy, can also filter the pollutant in the air simultaneously, can prevent pollutant interference monitoring, can also prevent pollutant damage device, the life of device has been prolonged, service environment's restriction has been reduced, the adaptability of device has been improved, in addition, also can pass through the upper cover 3 of combination formula, the washing and the change of filter pulp 7 are convenient after dismantling movable lid 32, do benefit to the maintenance in later stage, structural design is more reasonable.

More specifically, be connected for the buckle between fixed lid 31 and the movable cover 32, be provided with draw-in groove 3121 on the fixed lid 31, be provided with fixture block 322 on the movable cover 32 for when movable cover 32 and fixed lid 31 cooperate, can realize being connected of fixed lid 31 and movable cover 32 through the cooperation of fixture block 322 and draw-in groove 3121, make movable cover 32 and fixed lid 31's dismouting more convenient, do benefit to the maintenance of device.

More specifically, be provided with the caulking groove 312 on the top surface of fixed lid 31, the card of the bottom of convenient movable cover 32 through caulking groove 312 is gone into, realize spacingly, the reliability of fixed lid 31 and movable cover 32 connection has also been improved simultaneously, and a plurality of draw-in groove 3121 has been seted up on the inner wall of caulking groove 312, and each draw-in groove 3121 all is "L" font setting, each draw-in groove 3121 all includes vertical insertion section and horizontal chucking section, and the insertion section sets up to the direction of upper cover 3 along base 1, the outline line of the inner wall of caulking groove 312 is around establishing along the horizontal section, make fixture block 322 on the movable cover 32 can get into draw-in groove 3121 through the insertion section, and carry out the chucking through the chucking section, structural connection's reliability has been guaranteed.

More specifically, a plurality of limiting blocking ribs 3122 are disposed in the caulking groove 312 of the fixing cover 31 and in the region other than the clamping groove 3121, and the limiting blocking ribs 3122 are disposed transversely between the inner wall and the outer wall of the caulking groove 312. In addition, the bottom shape of the movable cover 32 is consistent with the shape of the caulking groove 312 and is circular, meanwhile, the bottom of the movable cover 32 is provided with the avoidance notch 321 corresponding to the limiting blocking rib 3122 one by one, and the inner wall of the bottom of the movable cover 32 is provided with a plurality of convex fixture blocks 322 corresponding to the clamping grooves 3121 one by one, so that when the avoidance notch 321 of the movable cover 32 is not corresponding to the limiting blocking rib 3122 one by one, the bottom of the movable cover 32 cannot fall into the caulking groove 312, so that the fixture blocks 322 and the clamping grooves 3121 cannot be clamped, the uniqueness of the connection direction between the movable cover 32 and the fixed cover 31 is realized, and a structural basis is provided for the arrangement of the light guide column 8 of the subsequent indicator light.

More specifically, the ring setting is personally submitted in the cross section of movable cover 32, and the cross section diameter at the top of movable cover 32 is less than the cross section diameter of the bottom of movable cover 32, and the contour line of the longitudinal section of the lateral wall of movable cover 32 is the arc setting for the outside of the lateral wall of movable cover 32 is the cambered surface setting, has realized streamlined smoke guide, more makes things convenient for the cigarette in the outside enters into movable cover 32 from movable cover 32, has improved the monitoring effect of cigarette, has improved smoke fire detector's performance.

More specifically, the light guide hole 323 that runs through is seted up at the top of movable cover 32, makes things convenient for the top of inserting the light guide column 8 of establishing in the photoelectric detection chamber subassembly 6 to stretch into light guide hole 323, is convenient for discern smoke fire detector's instruction state. And be provided with leaded light spout 324 in the inboard of movable cover 32 and be located its top, and the one end and the leaded light hole 323 intercommunication of leaded light spout 324, make fixture block 322 of movable cover 32 when chucking section internal rotation chucking, the top of leaded light post 8 can slide in leaded light spout 324, for leaded light post 8 provides dodges the space through leaded light spout 324, the pilot lamp and the electronic component structure of the broken leaded light post 8 or with the contact of the other end of leaded light post 8 appear pressing when having prevented that movable cover 32 from installing on fixed cover 31, the structure guarantee nature is higher, structural design is more reasonable.

More specifically, be annular array on the lateral wall of movable cover 32 and seted up a plurality of cigarette holes 325, and advance cigarette holes 325 quantity and be 8 or 16, make things convenient for the flue gas to enter into movable cover 32 through advancing cigarette holes 325 in, preferably, advance cigarette holes 325 and be provided with 16, further refined 8 directions of advancing the cigarette, improved monitoring accuracy, structural design is more reasonable.

More specifically, the inboard of the lateral wall of movable cover 32 just is located and all is provided with the fixed muscle 326 that keeps off to the inboard convex of movable cover 32 between each two adjacent cigarette holes 325, keeps off the muscle 326 through the fixed muscle that keeps off who arranges not only leads for advancing the cigarette in the movable cover 32, can also realize fixing filter pulp 7 simultaneously, and structural design is more reasonable.

Fig. 5 is a view showing an installation structure of the filter cotton according to a preferred embodiment of the present invention. As shown in fig. 2 and 5, filter pulp 7 is the annular setting, and the outside of filter pulp 7 is supported and is leaned on fixed fender muscle 326, has guaranteed that the outside of filter pulp 7 can be by fixed fender muscle 326 chucking, and simultaneously, the inboard of filter pulp 7 supports and leans on outside the upper portion of photoelectric detection chamber subassembly 6 for the cigarette that enters into in the photoelectric detection chamber subassembly 6 all need pass through filter pulp 7, has realized prevent wind dirt-proof purpose, has improved monitoring accuracy, has prolonged life.

The easily maintained smoke fire detector provided by the embodiment comprises a base 1, a middle cover 2, an upper cover 3, a conductive structure 4, a PCB photoelectric structure 5 and a photoelectric detection cavity assembly 6; the upper cover 3 is divided into a combined structure of a fixed cover 31 and a movable cover 32, the fixed cover 31 is fixedly connected with the middle cover 2, the movable cover 32 is detachably connected with the fixed cover 31, so that partial space of the upper cover 3 can be manually opened, the upper part of the photoelectric detection cavity assembly 6 extends out of the fixed cover 31 and into the movable cover 32, meanwhile, the movable cover 32 is internally provided with the filter cotton 7, the filter cotton 7 is covered outside the upper part of the photoelectric detection cavity assembly 6 extending out of the fixed cover 31, the impact of air flow under the condition of strong wind can be weakened through the filter cotton 7, the monitoring precision is improved, pollutants in the air can be filtered, the monitoring precision is further improved, the service life of the device is prolonged, the limitation of the use environment on the device is reduced, the upper cover 3 of the combined structure can also be convenient to clean and replace the filter cotton 7, and the maintenance of the device is facilitated, the adaptability of the device is improved.

The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.

Claims (10)

1. A smoke fire detector that is easy to maintain, comprising: the photoelectric detection device comprises a base, a middle cover, an upper cover, a conductive structure, a PCB photoelectric structure and a photoelectric detection cavity component, wherein the middle cover is arranged on the base, the upper cover is arranged on the middle cover, the direction from the base to the upper cover is along, the conductive structure, the PCB photoelectric structure and the photoelectric detection cavity component are sequentially arranged in a space formed by the base, the middle cover and the upper cover, the conductive structure is electrically connected with the PCB photoelectric structure, the lower part of the photoelectric detection cavity component is sleeved outside the PCB photoelectric structure, and the upper cover is of a combined structure, wherein,

the upper cover is including fixed lid and movable cover, be provided with the mesopore in the middle of the fixed lid, just fixed lid is fixed in cover in, the lower part of photoelectric detection chamber subassembly set up in the fixed lid, the upper portion of photoelectric detection chamber subassembly stretches out outside the mesopore, fixed covering can dismantle and be connected with the movable cover, be provided with the filter pulp on the inner wall of movable cover, just the filter pulp cover is located the photoelectric detection chamber subassembly stretches out outside the upper portion of fixed lid.

2. The easy-to-maintain smoke fire detector according to claim 1, wherein the fixed cover is connected with the movable cover by a buckle, the buckle comprises a clamping groove and a clamping block, the clamping groove is arranged in the fixed cover, and the clamping block is arranged on the movable cover.

3. The easy-to-maintain smoke fire detector according to claim 2, wherein an embedding groove is formed in the top surface of the fixing cover, a plurality of clamping grooves are formed in the inner wall of the embedding groove, each clamping groove is arranged in a shape like L, each clamping groove comprises a vertical insertion section and a transverse clamping section, the insertion section is arranged along the direction from the base to the upper cover, and the clamping sections are wound along the contour line of the inner wall of the embedding groove.

4. The easy-to-maintain smoke fire detector according to claim 3, wherein a plurality of limiting blocking ribs are arranged in the caulking groove and in the areas other than the clamping grooves, and the limiting blocking ribs are transversely arranged between the inner wall and the outer wall of the caulking groove.

5. The easy-to-maintain smoke fire detector according to claim 4, wherein the bottom of the movable cover is in a shape consistent with the shape of the caulking groove and is circular, meanwhile, the bottom of the movable cover is provided with avoidance notches corresponding to the limiting blocking ribs one by one, and the inner wall of the bottom of the movable cover is provided with a plurality of protruding clamping blocks corresponding to the clamping grooves one by one.

6. The easy-to-maintain smoke fire detector of claim 1, wherein the cross section of the movable cover is arranged in a circular ring, the diameter of the cross section of the top of the movable cover is smaller than that of the cross section of the bottom of the movable cover, and the contour line of the longitudinal section of the side wall of the movable cover is arranged in an arc shape.

7. The easy-to-maintain smoke fire detector according to claim 1, wherein a light guide hole is formed through the top of the movable cover, a light guide chute is formed inside the movable cover and at the top of the movable cover, and one end of the light guide chute is communicated with the light guide hole.

8. The easy-to-maintain smoke fire detector according to claim 1, wherein the side wall of the movable cover is provided with a plurality of smoke inlet holes in an annular array, and the number of the smoke inlet holes is 8 or 16.

9. The easy-to-maintain smoke fire detector according to claim 8, wherein a fixed blocking rib protruding towards the inner side of the movable cover is arranged on the inner side of the side wall of the movable cover and between every two adjacent smoke inlet holes.

10. The easy-to-maintain smoke fire detector according to claim 9, wherein the filter cotton is disposed in a ring shape, the outer side of the filter cotton abuts against the fixed stop rib, and the inner side of the filter cotton abuts against the outside of the upper portion of the photoelectric detection cavity assembly.

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