CN209894679U - Optical fiber smoke sensing device with built-in signal indicating optical fiber - Google Patents

Abstract

An optical fiber smoke sensing device with a built-in signal indicating optical fiber comprises a base shell, a bottom shell and a sensing box, wherein one end of a box side wall in the sensing box is connected with a box top plate, the other end of the box side wall is connected with a base plate in the base shell, a smoke guide port is formed in the middle of the base plate, a clamping and spacing area between an incident optical fiber clamping portion and a receiving optical fiber clamping portion in an inner cavity of the box is communicated with a smoke inlet in the bottom shell through the smoke guide port and a bottom shell cavity, incident/receiving optical fiber clamping grooves are formed in the incident/receiving optical fiber clamping portion respectively, the depth of the incident optical fiber clamping groove is smaller than that of the receiving optical fiber clamping groove, the receiving optical fiber clamping groove comprises a receiving optical fiber clamping cavity and a signal indicating optical fiber clamping cavity which are communicated, and a base shell signal hole communicated with the signal indicating optical fiber clamping cavity is formed in the base. The design can not only realize the smoke sensing of the optical fiber, but also realize the built-in signal indication optical fiber and reduce the application cost.

Description

Optical fiber smoke sensing device with built-in signal indicating optical fiber

Technical Field

The utility model relates to a smog alarm device especially relates to an optic fibre smog sensing device of built-in signal indication optic fibre, and the concretely is applicable to and puts in order to reduce application cost through signal indication optic fibre.

Background

At present, most of smoke detectors or sensors used for automatic fire alarm at home and abroad are photoelectric, ionic or infrared beam (laser) linear detectors and the like, which all adopt electric signals and electronic components, so that the smoke detectors or sensors have the defects of potential safety hazard and easy aging caused by the electric signals and the electronic components, therefore, a new smoke detector, namely an optical fiber smoke detector, appears in the prior art, the optical fiber smoke detector adopts the optical fiber smoke sensing technology, but when the smoke detector is applied, an external signal indicating lamp is arranged to meet the national regulation, an independent signal indicating light source and an independent signal indicating optical fiber are additionally arranged outside the optical fiber smoke detector, one end of the signal indicating optical fiber is communicated with the signal indicating light source, and the other end of the signal indicating optical fiber is led to the exterior of the optical fiber smoke detector after penetrating through a long-distance pipeline, the working state of the optical fiber smoke detector is indicated, so that the manufacturing cost of the device is increased, and a large amount of labor cost is increased, namely complicated and expensive long-distance pipeline threading operation is mainly performed.

The information disclosed in this background section is only for enhancement of understanding of the general background of the patent application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The utility model aims at overcoming the defect and the problem that the signal indication optic fibre that exists is external among the prior art, the application cost is higher, providing a signal indication optic fibre is built-in, the lower built-in signal of application cost indicates optic fibre's optic fibre smog sensing device.

In order to achieve the above purpose, the technical solution of the utility model is that: an optical fiber smoke sensing device with built-in signal indicating optical fibers comprises a base shell and a bottom shell which are both of hollow structures, wherein the base shell comprises a base plate and a base side coaming plate connected with the periphery of the base plate, the base side coaming plate and the base plate enclose a base shell cavity, the bottom shell comprises a bottom shell plate and a bottom side coaming plate, one end of the bottom side coaming plate is connected with the bottom surface of the base plate, the other end of the bottom side coaming plate is connected with the periphery of the bottom shell plate, the bottom side coaming plate and the bottom shell plate enclose a bottom shell cavity, and a smoke inlet communicated with the bottom shell cavity is formed in the bottom side coaming plate;

the optical fiber smoke sensing device also comprises a sensing box, an incident optical fiber clamping part and a receiving optical fiber clamping part; the sensing box comprises a box top plate and a box side wall, one end of the box side wall is connected with the periphery of the box top plate, the other end of the box side wall is connected with the top surface of the base plate, the base plate is positioned between the box side wall and the bottom side wall, the middle part of the base plate is provided with a smoke guide port, the box top plate, the box side wall and the base plate enclose a box inner cavity, an incident optical fiber clamping part and a receiving optical fiber clamping part which are arranged oppositely are arranged in the box inner cavity, a clamping interval area is arranged in the box inner cavity between the inner end of the incident optical fiber clamping part and the inner end of the receiving optical fiber clamping part, and the clamping interval area downwards passes through the smoke guide port and then is communicated; the optical fiber receiving device comprises an incident optical fiber clamping part, a receiving optical fiber clamping part and a base plate, wherein the incident optical fiber clamping part and the receiving optical fiber clamping part are respectively internally provided with an incident optical fiber clamping groove and a receiving optical fiber clamping groove, the outer end of the incident optical fiber clamping groove is connected with an incident optical fiber opening arranged on the side periphery of the box, the inner end of the incident optical fiber clamping groove is opposite to the inner end of the receiving optical fiber clamping groove through a clamping spacer area, the outer end of the receiving optical fiber clamping groove is connected with a receiving optical fiber opening arranged on the side periphery of the box, the depth of the incident optical fiber clamping groove is smaller than that of the receiving optical fiber clamping groove, the receiving optical fiber clamping groove comprises a receiving optical fiber clamping cavity and a signal indication optical fiber clamping cavity.

The receiving fiber holding groove has a depth 1.5-3 times the depth of the incident fiber holding groove.

The bottom shell further comprises a bottom shell ring plate, a bottom shell ring hole which is contacted with the bottom shell cavity is formed in the middle of the bottom shell ring plate, the position, close to the bottom shell ring hole, on the bottom surface of the bottom shell ring plate is connected with the top end of the bottom side coaming, the top surface of the bottom shell ring plate is connected with the bottom surface of the base shell plate, and a bottom shell signal hole which corresponds to the base shell signal hole is formed in the bottom shell ring plate.

Receive the optic fibre clamping part including receiving the fixing base and receiving the sliding seat, the bottom of receiving the fixing base is connected with the box roof, has seted up in the top of receiving the fixing base and has received half groove, receive the sliding seat including receiving the bottom plate, receiving the layer board and just to receiving inner splint, the receipt outer splint of setting, the top surface of receiving the bottom plate is connected with the bottom of receiving inner splint, receiving outer splint, receiving the layer board, has seted up the layer board half groove in the top of receiving the layer board, receives the top of inner splint, receiving the outer splint and upwards extends, and it has the double-layered post chamber coaxial with the layer board half groove to receive to press from both sides between inner splint, the receipt outer splint, and double-layered post chamber, layer board half groove and the receiving half groove amalgamation from top to.

One side of receiving inner splint, receiving nearly double-layered post chamber on the outer splint all is connected with the inner of a tooth strip, No. two tooth strips, and the outer end of a tooth strip, No. two tooth strips all contacts with pressing from both sides the post chamber, a tooth strip, receiving inner splint, No. two tooth strips constitute a tooth chamber, a tooth strip, receiving outer splint, No. two tooth strips constitute and just right No. two tooth chambers in a tooth chamber, a tooth chamber communicates with each other through pressing from both sides post chamber and No. two tooth chambers, and a tooth chamber, No. two tooth chambers are interior narrow outer wide structure.

The receiving optical fiber clamping part also comprises an inner plug board, an inner two plug boards, an outer plug board and an outer two plug boards which are all longer than the receiving inner clamping plate and the receiving outer clamping plate, the top surface of the receiving bottom plate is connected with the bottom ends of the inner plug board, the inner two plug boards, the outer one plug board and the outer two plug boards, the top ends of the inner plug board, the inner two plug boards, the outer one plug board and the outer two plug boards extend upwards, the inner one plug board and the inner two plug boards are respectively positioned at two sides of the receiving inner clamping plate, and the outer one plug board and the outer two plug boards are respectively positioned at two sides of the receiving outer clamping plate; the box top plate is provided with an inner plugging hole, an inner two plugging holes, an outer plugging hole and an outer two plugging holes which are correspondingly connected with the top ends of the inner one plugging plate, the inner two plugging plates, the outer one plugging plate and the outer two plugging plates one by one, the inner one plugging hole and the inner two plugging holes are positioned on one side of the receiving fixing seat, and the outer one plugging hole and the outer two plugging holes are positioned on the other side of the receiving fixing seat.

The receiving fixing seat comprises a seat inner section, a seat middle section and a seat outer section which are connected in sequence, wherein the seat inner section, the seat middle section and the seat outer section are internally provided with a same receiving half groove, the seat middle section is narrower than the seat inner section and the seat outer section, two inserting holes and two outer inserting holes are respectively arranged on two sides of the seat inner section, two sides of the seat outer section are respectively provided with an inner inserting hole and an outer inserting hole, the top ends of the receiving inner clamping plate and the receiving outer clamping plate are respectively clamped on two sides of the bottom of the seat middle section, and the clamping column cavity is communicated with the receiving half groove.

The base shell further comprises an inner ring smoke plate and an outer ring smoke plate which are opposite to the arrangement, the inner ring smoke plate comprises an inner clamping plate, an inner middle arc plate and an inner two clamping plates which are connected in sequence, the inner middle arc plate is arranged relative to the inner clamping plate and the inner two clamping plates in an outward protruding mode, the outer ring smoke plate comprises an outer clamping plate, an outer middle arc plate and an outer two clamping plates which are connected in sequence, the outer middle arc plate is arranged relative to the outer clamping plate and the outer two clamping plates in an outward protruding mode, the inner clamping plate and the outer clamping plate are respectively clamped on two sides of the inner end of the incident optical fiber clamping portion, the inner clamping plate and the outer two clamping plates are respectively clamped on two sides of the inner end of the receiving optical fiber clamping portion, the inner middle arc plate and the outer middle arc plate form a cigarette coiling channel, and the clamping interval area is communicated with the bottom.

The bottom shell further comprises a smoke gathering device arranged in the bottom shell cavity, the smoke gathering device comprises a device bottom plate, a smoke gathering shaft, a shaft smoke cavity and a plurality of smoke gathering pieces, all the smoke gathering pieces are uniformly arranged around the smoke gathering shaft, a piece flue is clamped between every two adjacent smoke gathering pieces, the piece flue is in contact with the side wall of the smoke gathering shaft through the shaft smoke cavity, the smoke gathering shaft is of a cone frustum structure with a narrow upper part and a wide lower part, the bottom ends of the smoke gathering shaft and the smoke gathering pieces are connected with the top surface of the device bottom plate, the height of the smoke gathering shaft is larger than that of the smoke gathering pieces, the top end of the smoke gathering shaft is inserted into the inner part of the smoke gathering channel through a smoke guide port, the top end of the smoke gathering piece is in contact with the bottom surface of the base plate, and the clamping interval area is communicated with the bottom shell cavity after sequentially passing through the smoke gathering channel, the smoke guide port.

The top surface of the bottom shell plate is connected with the bottom end of the bottom shell barrel, an inner step ring which is matched with the bottom plate in an embedded mode is arranged at the top end of the bottom shell barrel, a shell barrel inner cavity is arranged inside the bottom shell barrel, and the shell barrel inner cavity is in contact with the bottom surface of the bottom plate of the container.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model relates to an optical fiber smoke sensing device with built-in signal indicating optical fiber, which mainly comprises a base shell, a bottom shell, a sensing box, an incident optical fiber clamping part and a receiving optical fiber clamping part, wherein, one side of the base shell is connected with the bottom shell, the other side of the base shell is connected with the sensing box, the inner cavity formed by the sensing box and the base shell is provided with the incident/receiving optical fiber clamping part which is just opposite to the setting, a clamping interval area clamped between the incident and receiving optical fiber clamping parts is communicated with a smoke inlet after sequentially passing through a smoke guide port and a bottom shell cavity, when in use, the incident optical fiber clamping part is internally clamped with an incident optical fiber, the receiving optical fiber and the signal indicating optical fiber which are arranged up and down side by side are clamped in the receiving optical fiber clamping part, the outer ends of the incident optical fiber and the receiving optical fiber are respectively connected with a light source and a signal detection processing device, the outer end of the signal indicating, the advantages of this design include: firstly, the inner ends of the incident optical fiber and the receiving optical fiber are arranged oppositely, when smoke enters a clamping interval area, the light intensity transmitted to the signal detection processing device by the optical fiber is weakened due to the smoke, so that the smoke is detected, and automatic alarm is given; secondly, the light that incident optical fiber sent can be received by signal indication optical fiber to make signal indication optical fiber lighted, thereby make the outer end of signal indication optical fiber shine, and then light basic shell signal hole, use as operating condition pilot lamp, compare with prior art, saved the light source that additionally adds, greatly reduced the length of signal indication optical fiber, more saved the human cost that loaded down with trivial details expensive long distance pipeline threading operation increased. Therefore, the utility model discloses can not only realize optic fibre and feel cigarette, can realize that the signal indication optic fibre is built-in moreover, reduce application cost.

2. The utility model relates to an among built-in signal indication optic fibre's optic fibre smog sensing device, when the bottom casing still includes the drain pan ring plate, the position of nearly drain pan ring hole on the bottom surface of drain pan ring plate is connected with the top of bottom side bounding wall, the top surface of drain pan ring plate is connected with the bottom surface of basement substrate, set up the drain pan signal hole corresponding with basement shell signal hole on the drain pan ring plate, at this moment, the outer end of signal indication optic fibre is worn to the drain pan signal hole behind basement shell signal hole in, thereby set up operating condition pilot lamp on the bottom casing, the indicating effect is better. Therefore, the utility model discloses can set up operating condition pilot lamp on optic fibre smoke sensing device's drain pan through built-in optic fibre to reinforcing indicating effect.

3. The utility model relates to an among built-in signal indication optical fiber's optic fibre smog sensing device, receive the optic fibre clamping part including receiving fixing base and receiving sliding seat, wherein, with the box roof fixed connection the top of receiving fixing base in offered and receive half groove, and receive the interior splint of receipt in the sliding seat, it has the double-layered post chamber coaxial with layer board half groove to press from both sides between the receipt outer splint, and simultaneously, the layer board half groove has been seted up in the top of receiving the layer board, when using, coaxial double-layered post chamber, layer board half groove and receiving half groove carry out the amalgamation from top to bottom in order to constitute and receive the optic fibre centre gripping groove, this design can not only realize basic optic fibre clamping capability, and to receiving optic fibre that the centre gripping needs to be set up side by side from top to bottom simultaneously in the receipt optic fibre centre gripping groove, the demand of signal indication optic fibre, especially guide and strengthen through the centre gripping from top to side by side from top to bottom through the double, The top of receiving the outer splint can also carry out swing joint with the receiving fixing base to better fixed receipt optic fibre, signal indication optic fibre (especially when the seat middle section is narrower than seat inner segment, seat outer segment, when receiving the top of inner splint, receiving the outer splint and the cooperation of seat middle section, the effect is better), ensure that its upper and lower side by side setting can not change, thereby do benefit to optic fibre and feel the cigarette, and the smooth realization that operating condition instructed. Therefore, the utility model discloses can realize receiving optic fibre, signal indication optic fibre and set up side by side from top to bottom to do benefit to and realize that optic fibre smoke sensing and signal indication optic fibre are built-in.

4. The utility model relates to an among the optic fibre smog sensing device of built-in signal indication optic fibre, receive the inner splint, receive on the outer splint one side in nearly clamp post chamber all with a dental lamina, the inner of No. two dental laminas is connected, one, the outer end of No. two dental laminas all contacts with clamp post chamber, a dental lamina, receive the inner splint, No. two dental laminas constitute a dental cavity, a dental lamina, receive the outer splint, No. two dental laminas constitute and a dental cavity just right No. two dental cavities, this design can realize the centre gripping to optic fibre, can reduce the area of contact with optic fibre again, ensure the safety on optic fibre surface, do benefit to going on smoothly that optic fibre wore to establish. Therefore, the utility model discloses security when can improve the optic fibre and use.

5. The utility model relates to an among built-in signal indication optical fiber's optic fibre smog sensing device, the base casing includes the inner circle cigarette board, outer lane cigarette board and base substrate, wherein, the smoke guide mouth has been seted up at the middle part of base substrate, the inner circle cigarette board, the middle part clamp of outer lane cigarette board becomes circle cigarette passageway, and the centre gripping compartment is in proper order through circle cigarette passageway, communicate with each other with the drain pan chamber behind the smoke guide mouth, this design does benefit to the smog that will get into the drain pan chamber and in proper order through smoke guide mouth, circle cigarette passageway causes the centre gripping compartment in back, it is visible, the component part that constitutes whole cigarette approach of advancing is not in same plane, but arrange at the vertical direction successive layer, the advantage of this kind of design includes: firstly, the smoothness of smoke circulation can be ensured, and the normal performance of the optical fiber smoke sensing function is ensured; secondly, the design of the clamping plates in the inner ring smoke plate and the outer ring smoke plate can guide the assembly of the incident optical fiber clamping part and the receiving optical fiber clamping part, ensure the distance between the inner ends of the incident optical fiber clamping part and the receiving optical fiber clamping part and a clamping interval area, enhance the sealing effect, avoid the smoke entering the clamping interval area from overflowing again, and be beneficial to enhancing the smoke sensing function of the optical fiber; thirdly, the smoke inlet can only feed smoke, so that external ambient light cannot interfere the optical fiber in the sensing box, and the sensitivity of the optical fiber is reduced; fourthly, damage of insects to the internal structure of the sensing device can be avoided. Therefore, the utility model discloses not only the induced smoke effect is stronger, does benefit to realize that optic fibre feels the cigarette, and sensitivity is higher, can avoid the interference of ambient light moreover, and the protection against insects effect is better, and the security is stronger.

6. The utility model relates to an among built-in signal indication optical fiber's optic fibre smog sensing device, still can add a collection cigarette ware in the drain pan intracavity, this collection cigarette ware includes the ware bottom plate, converge the cigarette axle, around axle smoke chamber and a plurality of cigarette pieces that converge, it evenly sets up around converging the cigarette axle to converge the cigarette piece, it is wide circular cone structure under the upper narrow to converge the cigarette axle, the bottom of converging the cigarette piece all is connected with the top surface of ware bottom plate, insert in the inside of circle cigarette passageway behind the smoke guide mouth in the top of converging the cigarette axle, the top of converging the cigarette piece contacts with the bottom surface of basement floor, the centre gripping compartment is in proper order through circle cigarette passageway, the smoke guide mouth, around the axle smoke chamber, communicate with each other with the drain pan chamber behind the piece flue, the advantage of this design includes: firstly, the surrounding smoke gathering sheet structure has a strong smoke gathering effect, so that external smoke can easily enter but cannot easily come out, and the sensitivity of the optical fiber is improved; secondly, the smoke converging sheet can not only prevent light from penetrating from the external environment and causing adverse effect on the sensitivity of the optical fiber, but also prevent external insects from entering and prevent the sensor from being damaged; and the smoke collecting shaft is inserted into the smoke circulating channel after passing through the smoke guide port, so that the smoke guiding effect can be further enhanced, the smoke concentration in the clamping interval area is improved, and the optical fiber smoke sensitivity is enhanced. Therefore, the utility model discloses not only gather the cigarette effect stronger, the sensitivity is higher, and interference immunity is stronger moreover, and the security is better.

7. The utility model relates to an among built-in signal indication optical fiber's optic fibre smog sensing device, mainly include basic casing, end casing, this three spare part of sensing box, add the collection cigarette ware that additionally adds just also just four spare parts, quantity is less, the cost is lower, and the connected mode between the spare part all is mechanical type connected mode, like joint or grafting, not only easily assembly and dismantlement, and later maintenance only need use the air gun or the hairdryer blow off the dust in the sensing device can, greatly reduced after-sale cost of service. Therefore, the utility model discloses a manufacturing and use cost are all lower, easily popularize and apply.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is an assembly diagram of the present invention.

Fig. 3 is a schematic structural diagram of the middle base housing of the present invention.

Fig. 4 is a top view of fig. 3.

Fig. 5 is a schematic diagram of the relative positions of the incident optical fiber, the receiving optical fiber, the signal indicating optical fiber and the base housing according to the present invention.

Fig. 6 is a schematic view of the connection between the middle base housing and the sensing box of the present invention.

Fig. 7 is a rear view of fig. 6.

Fig. 8 is a schematic perspective view of the sensor cartridge of fig. 6.

Fig. 9 is a top view of fig. 8.

Fig. 10 is a schematic structural view of the receiving movable seat of the present invention.

Fig. 11 is a schematic structural view of the cigarette collector of the present invention.

Fig. 12 is a schematic view of the connection between the midsole housing and the smoke collector of the present invention.

Fig. 13 is a schematic structural view of the midsole housing of fig. 12.

In the figure: the optical fiber receiving device comprises a smoke inlet 1, a base shell 2, a base plate 21, a base shell signal hole 211, a base plate insertion hole 212, a base side enclosing plate 22, a base shell cavity 23, a smoke guide port 24, an inner ring smoke plate 25, an inner clamping plate 251, an inner middle arc plate 252, an inner two clamping plates 253, an outer ring smoke plate 26, an outer clamping plate 261, an outer middle arc plate 262, an outer two clamping plates 263, a ring smoke channel 27, a bottom shell 3, a bottom shell plate 31, a bottom side enclosing plate 32, a bottom shell cavity 33, a bottom shell ring plate 34, a bottom shell ring hole 341, a bottom shell signal hole 342, a bottom shell 35, a shell inner cavity 351, an inner step ring 36, a bottom shell top cover 37, a sensing box 4, a box top plate 41, an inner one insertion hole 411, an inner two insertion holes 412, an outer insertion hole 413, an outer two insertion holes 414, a box side enclosing plate 42, an incident optical fiber port 421, an optical fiber receiving port 422, a box inner cavity 43, a clamping interval 431, a side enclosing pin 44, an incident optical fiber clamping part 5, the receiving optical fiber clamping groove 61, the receiving optical fiber clamping cavity 611, the signal indicating optical fiber clamping cavity 612, the receiving fixing seat 62, the receiving half-groove 620, the seat inner section 621, the seat middle section 622, the seat outer section 623, the receiving movable seat 63, the receiving bottom plate 64, the receiving supporting plate 65, the supporting plate half-groove 651, the receiving inner clamping plate 66, the first tooth cavity 660, the first tooth bar 661, the second tooth bar 662, the inner insertion plate 663, the inner two insertion plates 664, the receiving outer clamping plate 67, the second tooth cavity 670, the outer one insertion plate 671, the outer two insertion plates 672, the clamping column cavity 68, the smoke collector 7, the smoke collecting shaft 71, the axial smoke cavity 72, the smoke collecting sheet 73, the sheet smoke channel 74, the bottom plate 75, the incident optical fiber 8, the receiving optical fiber 9 and the signal indicating optical fiber 10.

Detailed Description

The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.

Referring to fig. 1 to 13, an optical fiber smoke sensing device with built-in signal indicating optical fibers comprises a base shell 2 and a bottom shell 3 which are both hollow structures, wherein the base shell 2 comprises a base plate 21 and a base side surrounding plate 22 connected with the periphery of the base plate, the base side surrounding plate 22 and the base plate 21 surround a base shell cavity 23, the bottom shell 3 comprises a bottom shell plate 31 and a bottom side surrounding plate 32, one end of the bottom side surrounding plate 32 is connected with the bottom surface of the base plate 21, the other end of the bottom side surrounding plate 32 is connected with the periphery of the bottom shell plate 31, the bottom side surrounding plate 32 and the bottom shell plate 31 surround a bottom shell cavity 33, and a smoke inlet 1 communicated with the bottom shell cavity 33 is formed in the bottom side surrounding plate 32;

the optical fiber smoke sensing device also comprises a sensing box 4, an incident optical fiber clamping part 5 and a receiving optical fiber clamping part 6; the sensing box 4 comprises a box top plate 41 and a box side wall 42, one end of the box side wall 42 is connected with the periphery of the box top plate 41, the other end of the box side wall 42 is connected with the top surface of the base plate 21, the base plate 21 is positioned between the box side wall 42 and the bottom side wall 32, the middle part of the base plate 21 is provided with a smoke guide port 24, the box top plate 41, the box side wall 42 and the base plate 21 enclose a box inner cavity 43, an incident optical fiber clamping part 5 and a receiving optical fiber clamping part 6 which are arranged oppositely are arranged in the box inner cavity 43, a clamping interval region 431 is positioned between the inner end of the incident optical fiber clamping part 5 and the inner end of the receiving optical fiber clamping part 6 in the box inner cavity 43, and the clamping interval region 431 is communicated with the bottom shell cavity 33 after passing through the smoke guide port 24 downwards; the incident optical fiber clamping part 5 and the receiving optical fiber clamping part 6 are respectively provided with an incident optical fiber clamping groove 51 and a receiving optical fiber clamping groove 61 inside, the outer end of the incident optical fiber clamping groove 51 is connected with an incident optical fiber port 421 arranged on the box side wall 42, the inner end of the incident optical fiber clamping groove 51 is arranged opposite to the inner end of the receiving optical fiber clamping groove 61 through a clamping spacer 431, the outer end of the receiving optical fiber clamping groove 61 is connected with a receiving optical fiber port 422 arranged on the box side wall 42, the depth of the incident optical fiber clamping groove 51 is smaller than that of the receiving optical fiber clamping groove 61, the receiving optical fiber clamping groove 61 comprises a receiving optical fiber clamping cavity 611 and a signal indicating optical fiber clamping cavity 612 which are communicated, and a base shell signal hole 211 communicated with the signal indicating optical fiber clamping cavity 612 is arranged on the base plate 21.

The receiving fiber holding groove 61 has a depth 1.5 to 3 times the depth of the incident fiber holding groove 51.

Bottom shell 3 further includes a bottom shell ring plate 34, a bottom shell ring hole 341 contacting bottom shell cavity 33 is formed in the middle of bottom shell ring plate 34, a portion of the bottom surface of bottom shell ring plate 34 near bottom shell ring hole 341 is connected to the top end of bottom side bounding wall 32, the top surface of bottom shell ring plate 34 is connected to the bottom surface of base plate 21, and a bottom shell signal hole 342 corresponding to base shell signal hole 211 is formed in bottom shell ring plate 34.

Receive optic fibre clamping part 6 including receiving fixing base 62 and receiving sliding seat 63, the bottom of receiving fixing base 62 is connected with box roof 41, has seted up receiving half groove 620 in the top of receiving fixing base 62, receiving sliding seat 63 is including receiving bottom plate 64, receiving layer board 65 and just to receiving inner splint 66, the receiving outer splint 67 that sets up, the top surface of receiving bottom plate 64 is connected with the bottom of receiving inner splint 66, receiving outer splint 67, receiving layer board 65, has seted up layer board half groove 651 in the top of receiving layer board 65, receives inner splint 66, the top of receiving outer splint 67 upwards extends, and it has the clamp post chamber 68 coaxial with layer board half groove 651 to press from both sides between receiving inner splint 66, the receiving outer splint 67, and the clamp post chamber 68, layer board half groove 651 and receiving half groove 620 amalgamate from top to bottom and become and receive optic fibre clamping groove 61.

One side of receiving inner splint 66, receiving outer splint 67 and going up nearly double-layered post chamber 68 all is connected with the inner of a tooth strip 661, No. two tooth strips 662, the outer end of a tooth strip 661, No. two tooth strips 662 all contacts with double-layered post chamber 68, a tooth strip 661, receiving inner splint 66, No. two tooth strips 662 constitute No. one tooth chamber 660, a tooth strip 661, receiving outer splint 67, No. two tooth strips 662 constitute No. two tooth chambers 670 just right with a tooth chamber 660, a tooth chamber 660 communicates with each other through double-layered post chamber 68 and No. two tooth chambers 670, and a tooth chamber 660, No. two tooth chambers 670 are interior narrow outer wide structure.

The receiving optical fiber clamping part 6 further comprises an inner plugging plate 663, an inner plugging plate 664, an outer plugging plate 671 and an outer plugging plate 672 which are all longer than the receiving inner clamping plate 66 and the receiving outer clamping plate 67, the top surface of the receiving bottom plate 64 is connected with the bottom ends of the inner plugging plate 663, the inner plugging plate 664, the outer plugging plate 671 and the outer plugging plate 672, the top ends of the inner plugging plate 663, the inner plugging plate 664, the outer plugging plate 671 and the outer plugging plate 672 extend upwards, the inner plugging plate 663 and the inner plugging plate 664 are respectively positioned at two sides of the receiving inner clamping plate 66, and the outer plugging plate 671 and the outer plugging plate 672 are respectively positioned at two sides of the receiving outer clamping plate 67; the box top plate 41 is provided with an inner plugging hole 411, an inner two plugging hole 412, an outer plugging hole 413 and an outer two plugging hole 414 which are correspondingly connected with the top ends of the inner plugging plate 663, the inner two plugging plate 664, the outer plugging plate 671 and the outer two plugging plate 672 one by one, the inner plugging hole 411 and the inner two plugging hole 412 are positioned at one side of the receiving fixing seat 62, and the outer plugging hole 413 and the outer two plugging hole 414 are positioned at the other side of the receiving fixing seat 62.

The receiving fixing seat 62 comprises a seat inner section 621, a seat middle section 622 and a seat outer section 623 which are sequentially connected, the seat inner section 621, the seat middle section 622 and the seat outer section 623 are internally provided with a receiving half groove 620, the seat middle section 622 is narrow in the seat inner section 621 and is arranged at the seat outer section 623, two inner inserting holes 412 and two outer inserting holes 414 are respectively arranged at two sides of the seat inner section 621, an inner inserting hole 411 and an outer inserting hole 413 are respectively arranged at two sides of the seat outer section 623, an inner clamping plate 66 is received, the top end of the outer clamping plate 67 is clamped at two sides of the bottom of the seat middle section 622 respectively, and a clamping column cavity 68 is communicated with the receiving half groove 620.

The base shell 2 further comprises an inner ring smoke plate 25 and an outer ring smoke plate 26 which are opposite to each other, the inner ring smoke plate 25 comprises an inner clamping plate 251, an inner middle arc plate 252 and an inner two clamping plates 253 which are sequentially connected, the inner middle arc plate 252 is arranged in a protruding mode relative to the inner clamping plate 251 and the inner two clamping plates 253, the outer ring smoke plate 26 comprises an outer clamping plate 261, an outer middle arc plate 262 and an outer two clamping plate 263 which are sequentially connected, the outer middle arc plate 262 is arranged in a protruding mode relative to the outer clamping plate 261 and the outer two clamping plate 263, the inner clamping plate 251 and the outer clamping plate 261 are respectively clamped on two sides of the inner end of the incident optical fiber clamping part 5, the inner clamping plate 253 and the outer two clamping plates 263 are respectively clamped on two sides of the inner end of the receiving optical fiber clamping part 6, the inner middle arc plate 252 and the outer middle arc plate 262 are clamped into a smoke ring channel 27, and the clamping space region 431 is sequentially communicated with the bottom shell cavity 33 after.

The bottom shell 3 further comprises a smoke gathering device 7 arranged in the bottom shell cavity 33, the smoke gathering device 7 comprises a device bottom plate 75, a smoke gathering shaft 71, a cigarette surrounding cavity 72 and a plurality of smoke gathering pieces 73, all the smoke gathering pieces 73 are uniformly arranged around the smoke gathering shaft 71, a piece smoke channel 74 is clamped between every two adjacent smoke gathering pieces 73, the piece smoke channel 74 is in contact with the side wall of the smoke gathering shaft 71 through the cigarette surrounding cavity 72, the smoke gathering shaft 71 is in a conical table structure with a narrow top and a wide bottom, the bottom ends of the smoke gathering shaft 71 and the smoke gathering pieces 73 are connected with the top surface of the device bottom plate 75, the height of the smoke gathering shaft 71 is larger than that of the smoke gathering pieces 73, the top end of the smoke gathering shaft 71 is inserted into the smoke surrounding channel 27 through the smoke guide port 24, the top end of the smoke gathering pieces 73 is in contact with the bottom surface of the base plate 21, and the clamping 431 is communicated with the bottom shell cavity 33 through the smoke surrounding channel 27, the smoke guide port 24, the cigarette surrounding cavity 72 and the cigarette surrounding channel 74 in sequence.

The top surface of the bottom shell plate 31 is connected with the bottom end of the bottom shell 35, the top end of the bottom shell 35 is provided with an inner step ring 36 which is matched with the bottom plate 75 in an embedding manner, the inside of the bottom shell 35 is provided with a shell inner cavity 351, and the shell inner cavity 351 is contacted with the bottom surface of the bottom plate 75.

The principle of the utility model is explained as follows:

the utility model provides an incident optical fiber clamping part 5's structure is the same or different with the structure of receiving optical fiber clamping part 6, and when the structure is the same, only need adjust the degree of depth of receiving optical fiber clamping groove 61 to make it accord with incident optical fiber clamping groove 51's the degree of depth requirement can.

The depth of the receiving fiber holding groove 61 is 1.5 to 3 times, preferably 2 times, the depth of the incident fiber holding groove 51.

The utility model provides a box side encloses 42 can set up the side wall of two at least epirelief on its bottom and participate in 44, and this side wall participates in base plate jack 212 that 44 and base plate 21 set up and carries out the grafting cooperation of one-to-one to realize being connected of sensing box 4 and base casing 2.

The utility model provides a bottom shell 3 still can include drain pan top cover 37, and this drain pan top cover 37 is both ends open-ended hollow structure, and drain pan top cover 37's end mouth is connected with the top surface of drain pan ring plate 34, and drain pan top cover 37's top mouth is connected all around with inlay in its inside base plate 21.

The utility model discloses an in converging cigarette ware 7, it is dull and stereotyped structure to converge tabacco piece 73, converge cigarette axle 71 is under the narrow wide circular truncated cone structure, the inflow of smog more does benefit to of dull and stereotyped structure converges tabacco piece 73, on this basis, the bottom that possesses the confluent cigarette axle 71 of great volume can crowd the space that occupies around axle smoke chamber 72, make the smog that gets into in the axle smoke chamber 72 can not stop, must flow, and simultaneously, converge cigarette axle 71 from supreme present the trend of change that is gradually thin on the whole down, this kind of trend of change does benefit to the smog that the guide in the axle smoke chamber 72 upwards flows just, in order getting into smoke guide port 24, make on the basis that improves smog inflow speed, the passageway of induced smoke is more unobstructed, thereby ensure the speed of assembling of smog in sensing box 4, more do benefit to the unit concentration that improves smog in sensing box 4, the sensitivity of reinforcing optic fibre feeling cigarette.

Example 1:

referring to fig. 1 to 13, an optical fiber smoke sensing device with built-in signal indicating optical fibers comprises a base shell 2 and a bottom shell 3 which are both hollow structures, wherein the base shell 2 comprises a base plate 21 and a base side surrounding plate 22 connected with the periphery of the base plate, the base side surrounding plate 22 and the base plate 21 surround a base shell cavity 23, the bottom shell 3 comprises a bottom shell plate 31 and a bottom side surrounding plate 32, one end of the bottom side surrounding plate 32 is connected with the bottom surface of the base plate 21, the other end of the bottom side surrounding plate 32 is connected with the periphery of the bottom shell plate 31, the bottom side surrounding plate 32 and the bottom shell plate 31 surround a bottom shell cavity 33, and a smoke inlet 1 communicated with the bottom shell cavity 33 is formed in the bottom side surrounding plate 32; the optical fiber smoke sensing device also comprises a sensing box 4, an incident optical fiber clamping part 5 and a receiving optical fiber clamping part 6; the sensing box 4 comprises a box top plate 41 and a box side wall 42, one end of the box side wall 42 is connected with the periphery of the box top plate 41, the other end of the box side wall 42 is connected with the top surface of the base plate 21, the base plate 21 is positioned between the box side wall 42 and the bottom side wall 32, the middle part of the base plate 21 is provided with a smoke guide port 24, the box top plate 41, the box side wall 42 and the base plate 21 enclose a box inner cavity 43, an incident optical fiber clamping part 5 and a receiving optical fiber clamping part 6 which are arranged oppositely are arranged in the box inner cavity 43, a clamping interval region 431 is positioned between the inner end of the incident optical fiber clamping part 5 and the inner end of the receiving optical fiber clamping part 6 in the box inner cavity 43, and the clamping interval region 431 is communicated with the bottom shell cavity 33 after passing through the smoke guide port 24 downwards; the incident optical fiber clamping part 5 and the receiving optical fiber clamping part 6 are respectively provided with an incident optical fiber clamping groove 51 and a receiving optical fiber clamping groove 61 inside, the outer end of the incident optical fiber clamping groove 51 is connected with an incident optical fiber port 421 arranged on the box side wall 42, the inner end of the incident optical fiber clamping groove 51 is arranged opposite to the inner end of the receiving optical fiber clamping groove 61 through a clamping spacer 431, the outer end of the receiving optical fiber clamping groove 61 is connected with a receiving optical fiber port 422 arranged on the box side wall 42, the depth of the incident optical fiber clamping groove 51 is smaller than that of the receiving optical fiber clamping groove 61, the receiving optical fiber clamping groove 61 comprises a receiving optical fiber clamping cavity 611 and a signal indicating optical fiber clamping cavity 612 which are communicated, and a base shell signal hole 211 communicated with the signal indicating optical fiber clamping cavity 612 is arranged on the base plate 21. Preferably, the receiving fiber holding groove 61 has a depth 1.5 to 3 times the depth of the incident fiber holding groove 51.

Example 2:

the basic contents are the same as example 1, except that:

bottom shell 3 further includes a bottom shell ring plate 34, a bottom shell ring hole 341 contacting bottom shell cavity 33 is formed in the middle of bottom shell ring plate 34, a portion of the bottom surface of bottom shell ring plate 34 near bottom shell ring hole 341 is connected to the top end of bottom side bounding wall 32, the top surface of bottom shell ring plate 34 is connected to the bottom surface of base plate 21, and a bottom shell signal hole 342 corresponding to base shell signal hole 211 is formed in bottom shell ring plate 34.

Example 3:

the basic contents are the same as example 1, except that:

receive optic fibre clamping part 6 including receiving fixing base 62 and receiving sliding seat 63, the bottom of receiving fixing base 62 is connected with box roof 41, has seted up receiving half groove 620 in the top of receiving fixing base 62, receiving sliding seat 63 is including receiving bottom plate 64, receiving layer board 65 and just to receiving inner splint 66, the receiving outer splint 67 that sets up, the top surface of receiving bottom plate 64 is connected with the bottom of receiving inner splint 66, receiving outer splint 67, receiving layer board 65, has seted up layer board half groove 651 in the top of receiving layer board 65, receives inner splint 66, the top of receiving outer splint 67 upwards extends, and it has the clamp post chamber 68 coaxial with layer board half groove 651 to press from both sides between receiving inner splint 66, the receiving outer splint 67, and the clamp post chamber 68, layer board half groove 651 and receiving half groove 620 amalgamate from top to bottom and become and receive optic fibre clamping groove 61.

Example 4:

the basic contents are the same as example 3, except that:

the receiving optical fiber clamping part 6 further comprises an inner plugging plate 663, an inner plugging plate 664, an outer plugging plate 671 and an outer plugging plate 672 which are all longer than the receiving inner clamping plate 66 and the receiving outer clamping plate 67, the top surface of the receiving bottom plate 64 is connected with the bottom ends of the inner plugging plate 663, the inner plugging plate 664, the outer plugging plate 671 and the outer plugging plate 672, the top ends of the inner plugging plate 663, the inner plugging plate 664, the outer plugging plate 671 and the outer plugging plate 672 extend upwards, the inner plugging plate 663 and the inner plugging plate 664 are respectively positioned at two sides of the receiving inner clamping plate 66, and the outer plugging plate 671 and the outer plugging plate 672 are respectively positioned at two sides of the receiving outer clamping plate 67; the box top plate 41 is provided with an inner plugging hole 411, an inner two plugging hole 412, an outer plugging hole 413 and an outer two plugging hole 414 which are correspondingly connected with the top ends of the inner plugging plate 663, the inner two plugging plate 664, the outer plugging plate 671 and the outer two plugging plate 672 one by one, the inner plugging hole 411 and the inner two plugging hole 412 are positioned at one side of the receiving fixing seat 62, and the outer plugging hole 413 and the outer two plugging hole 414 are positioned at the other side of the receiving fixing seat 62. The receiving fixing seat 62 comprises a seat inner section 621, a seat middle section 622 and a seat outer section 623 which are sequentially connected, the seat inner section 621, the seat middle section 622 and the seat outer section 623 are internally provided with a receiving half groove 620, the seat middle section 622 is narrow in the seat inner section 621 and is arranged at the seat outer section 623, two inner inserting holes 412 and two outer inserting holes 414 are respectively arranged at two sides of the seat inner section 621, an inner inserting hole 411 and an outer inserting hole 413 are respectively arranged at two sides of the seat outer section 623, an inner clamping plate 66 is received, the top end of the outer clamping plate 67 is clamped at two sides of the bottom of the seat middle section 622 respectively, and a clamping column cavity 68 is communicated with the receiving half groove 620.

Example 5:

the basic contents are the same as example 1, except that:

the base shell 2 further comprises an inner ring smoke plate 25 and an outer ring smoke plate 26 which are opposite to each other, the inner ring smoke plate 25 comprises an inner clamping plate 251, an inner middle arc plate 252 and an inner two clamping plates 253 which are sequentially connected, the inner middle arc plate 252 is arranged in a protruding mode relative to the inner clamping plate 251 and the inner two clamping plates 253, the outer ring smoke plate 26 comprises an outer clamping plate 261, an outer middle arc plate 262 and an outer two clamping plate 263 which are sequentially connected, the outer middle arc plate 262 is arranged in a protruding mode relative to the outer clamping plate 261 and the outer two clamping plate 263, the inner clamping plate 251 and the outer clamping plate 261 are respectively clamped on two sides of the inner end of the incident optical fiber clamping part 5, the inner clamping plate 253 and the outer two clamping plates 263 are respectively clamped on two sides of the inner end of the receiving optical fiber clamping part 6, the inner middle arc plate 252 and the outer middle arc plate 262 are clamped into a smoke ring channel 27, and the clamping space region 431 is sequentially communicated with the bottom shell cavity 33 after.

Example 6:

the basic contents are the same as example 1, except that:

the bottom shell 3 further comprises a smoke gathering device 7 arranged in the bottom shell cavity 33, the smoke gathering device 7 comprises a device bottom plate 75, a smoke gathering shaft 71, a cigarette surrounding cavity 72 and a plurality of smoke gathering pieces 73, all the smoke gathering pieces 73 are uniformly arranged around the smoke gathering shaft 71, a piece smoke channel 74 is clamped between every two adjacent smoke gathering pieces 73, the piece smoke channel 74 is in contact with the side wall of the smoke gathering shaft 71 through the cigarette surrounding cavity 72, the smoke gathering shaft 71 is in a conical table structure with a narrow top and a wide bottom, the bottom ends of the smoke gathering shaft 71 and the smoke gathering pieces 73 are connected with the top surface of the device bottom plate 75, the height of the smoke gathering shaft 71 is larger than that of the smoke gathering pieces 73, the top end of the smoke gathering shaft 71 is inserted into the smoke surrounding channel 27 through the smoke guide port 24, the top end of the smoke gathering pieces 73 is in contact with the bottom surface of the base plate 21, and the clamping 431 is communicated with the bottom shell cavity 33 through the smoke surrounding channel 27, the smoke guide port 24, the cigarette surrounding cavity 72 and the cigarette surrounding channel 74 in sequence. The top surface of the bottom shell plate 31 is connected with the bottom end of the bottom shell 35, the top end of the bottom shell 35 is provided with an inner step ring 36 which is matched with the bottom plate 75 in an embedding manner, the inside of the bottom shell 35 is provided with a shell inner cavity 351, and the shell inner cavity 351 is contacted with the bottom surface of the bottom plate 75.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, but all equivalent modifications or changes made by those skilled in the art according to the present invention should be included in the protection scope of the claims.

Claims (8)

1. The utility model provides a built-in signal indication optical fiber's optic fibre smog sensing device, includes that base casing (2) and bottom casing (3) that are hollow structure, base casing (2) include basement board (21) and base side bounding wall (22) rather than being connected all around, base side bounding wall (22), basement board (21) enclose into a basement chamber (23), bottom casing (3) include bottom shell board (31) and bottom side bounding wall (32), and the one end of bottom side bounding wall (32) is connected with the bottom surface of basement board (21), and the other end of bottom side bounding wall (32) is connected all around with bottom shell board (31), and bottom side bounding wall (32), bottom shell board (31) enclose into a bottom shell chamber (33), and set up on bottom side bounding wall (32) and enter cigarette mouth (1) communicating with bottom shell chamber (33), its characterized in that:

the optical fiber smoke sensing device also comprises a sensing box (4), an incident optical fiber clamping part (5) and a receiving optical fiber clamping part (6); the sensing box (4) comprises a box top plate (41) and a box side wall (42), one end of the box side wall (42) is connected with the periphery of the box top plate (41), the other end of the box side wall (42) is connected with the top surface of the base plate (21), the base plate (21) is positioned between the box side wall (42) and the bottom side wall (32), the middle part of the base plate (21) is provided with a smoke guide opening (24), the box top plate (41), the box side wall (42) and the base plate (21) enclose a box inner cavity (43), an incident optical fiber clamping part (5) and a receiving optical fiber clamping part (6) which are arranged oppositely are arranged in the box inner cavity (43), a clamping interval area (431) is arranged in the box inner cavity (43) between the inner end of the incident optical fiber clamping part (5) and the inner end of the receiving optical fiber clamping part (6), the clamping spacing area (431) downwards passes through the smoke guide port (24) and then is communicated with the bottom shell cavity (33); an incident optical fiber clamping groove (51) and a receiving optical fiber clamping groove (61) are respectively arranged in the incident optical fiber clamping part (5) and the receiving optical fiber clamping part (6), the outer end of the incident optical fiber clamping groove (51) is connected with an incident optical fiber port (421) arranged on the box side wall (42), the inner end of the incident optical fiber clamping groove (51) is arranged opposite to the inner end of the receiving optical fiber clamping groove (61) through a clamping interval area (431), the outer end of the receiving optical fiber clamping groove (61) is connected with a receiving optical fiber port (422) arranged on the box side wall (42), the depth of the incident optical fiber clamping groove (51) is smaller than that of the receiving optical fiber clamping groove (61), the receiving optical fiber clamping groove (61) comprises a receiving optical fiber clamping cavity (611) and a signal indicating optical fiber clamping cavity (612) which are communicated with each other, and a base shell signal hole (211) communicated with the signal indication optical fiber clamping cavity (612) is formed in the base plate (21).

2. A fiber optic smoke sensor device incorporating a signal indicating fiber as claimed in claim 1, wherein: the receiving fiber holding groove (61) has a depth 1.5 to 3 times the depth of the incident fiber holding groove (51).

3. A fiber optic smoke sensor incorporating a signal indicating fiber according to claim 1 or 2, wherein: the bottom shell (3) further comprises a bottom shell annular plate (34), a bottom shell annular hole (341) which is in contact with the bottom shell cavity (33) is formed in the middle of the bottom shell annular plate (34), the part, close to the bottom shell annular hole (341), on the bottom surface of the bottom shell annular plate (34) is connected with the top end of the bottom side surrounding plate (32), the top surface of the bottom shell annular plate (34) is connected with the bottom surface of the base plate (21), and a bottom shell signal hole (342) corresponding to the base shell signal hole (211) is formed in the bottom shell annular plate (34).

4. A fiber optic smoke sensor incorporating a signal indicating fiber according to claim 1 or 2, wherein: the receiving optical fiber clamping part (6) comprises a receiving fixed seat (62) and a receiving movable seat (63), the bottom of the receiving fixed seat (62) is connected with a box top plate (41), a receiving half groove (620) is formed in the top of the receiving fixed seat (62), the receiving movable seat (63) comprises a receiving bottom plate (64), a receiving supporting plate (65), a receiving inner clamping plate (66) and a receiving outer clamping plate (67) which are arranged oppositely, the top surface of the receiving bottom plate (64) is connected with the bottom ends of the receiving inner clamping plate (66), the receiving outer clamping plate (67) and the receiving supporting plate (65), a supporting plate half groove (651) is formed in the top end of the receiving supporting plate (65), the top ends of the receiving inner clamping plate (66) and the receiving outer clamping plate (67) extend upwards, a clamping column cavity (68) coaxial with the supporting plate half groove (651) is formed between the receiving inner clamping plate (66) and the receiving outer clamping, the column clamping cavity (68), the supporting plate half-groove (651) and the receiving half-groove (620) are vertically spliced to form a receiving optical fiber clamping groove (61).

5. The optical fiber smoke sensor with built-in signal indicating optical fiber according to claim 4, wherein: receive inner splint (66), receive outer splint (67) go up one side of nearly clamp post chamber (68) all be connected with the inner of tooth strip (661), No. two tooth strips (662), the outer end of tooth strip (661), No. two tooth strips (662) all contacts with clamp post chamber (68), tooth strip (661), receive inner splint (66), No. two tooth strips (662) constitute tooth chamber (660), tooth strip (661), receive outer splint (67), No. two tooth strips (662) constitute No. two tooth chamber (670) just right with tooth chamber (660), tooth chamber (660) communicates with each other through clamp post chamber (68) and No. two tooth chamber (670), and tooth chamber (660), No. two tooth chamber (670) are interior narrow outer wide structure.

6. The optical fiber smoke sensor with built-in signal indicating optical fiber according to claim 4, wherein: the receiving optical fiber clamping part (6) further comprises an inner plugging plate (663), an inner two plugging plate (664), an outer one plugging plate (671) and an outer two plugging plate (672) which are all longer than the receiving inner clamping plate (66) and the receiving outer clamping plate (67), the top surface of the receiving bottom plate (64) is connected with the bottom ends of the inner one plugging plate (663), the inner two plugging plate (664), the outer one plugging plate (671) and the outer two plugging plate (672), the top ends of the inner one plugging plate (663), the inner two plugging plate (664), the outer one plugging plate (671) and the outer two plugging plate (672) extend upwards, the inner one plugging plate (663) and the inner two plugging plate (664) are respectively positioned at two sides of the receiving inner clamping plate (66), and the outer one plugging plate (671) and the outer two plugging plate (672) are respectively positioned at two sides of the receiving outer clamping plate (67); the box top plate (41) is provided with an inner plugging hole (411), an inner two plugging hole (412), an outer one plugging hole (413) and an outer two plugging hole (414) which are connected with the top ends of the inner one plugging plate (663), the inner two plugging plate (664), the outer one plugging plate (671) and the outer two plugging plate (672) in a one-to-one correspondence manner, the inner one plugging hole (411) and the inner two plugging hole (412) are located on one side of the receiving fixing seat (62), and the outer one plugging hole (413) and the outer two plugging hole (414) are located on the other side of the receiving fixing seat (62).

7. The optical fiber smoke sensor incorporating a signal indicating optical fiber according to claim 6, wherein: the receiving fixing seat (62) comprises a seat inner section (621), a seat middle section (622) and a seat outer section (623) which are sequentially connected, wherein the seat inner section (621), the seat middle section (622) and the seat outer section (623) are internally provided with a same receiving half groove (620), the seat middle section (622) is narrower than the seat inner section (621) and the seat outer section (623) are arranged, two inner inserting holes (412) and two outer inserting holes (414) are respectively arranged on two sides of the seat inner section (621), an inner inserting hole (411) and an outer inserting hole (413) are respectively arranged on two sides of the seat outer section (623), the top ends of the receiving inner clamping plates (66) and the receiving outer clamping plates (67) are respectively clamped on two sides of the bottom of the seat middle section (622), and a clamping column cavity (68) is communicated with the receiving half groove (620).

8. A fiber optic smoke sensor incorporating a signal indicating fiber according to claim 1 or 2, wherein: the base shell (2) further comprises an inner ring smoke plate (25) and an outer ring smoke plate (26) which are arranged oppositely, the inner ring smoke plate (25) comprises an inner clamping plate (251), an inner middle arc plate (252) and an inner two clamping plates (253) which are connected in sequence, the inner middle arc plate (252) is arranged outwards relative to the inner clamping plate (251) and the inner two clamping plates (253), the outer ring smoke plate (26) comprises an outer clamping plate (261), an outer middle arc plate (262) and an outer two clamping plate (263) which are connected in sequence, the outer middle arc plate (262) is arranged outwards relative to the outer clamping plate (261) and the outer two clamping plates (263), the inner clamping plate (251) and the outer clamping plate (261) are respectively clamped at two sides of the inner end of the incident optical fiber clamping part (5), the inner two clamping plates (253) and the outer two clamping plates (263) are respectively clamped at two sides of the inner end of the receiving optical fiber clamping part (6), the inner middle arc plate (252) and the outer middle arc plate (262) are clamped into a, the clamping interval area (431) is communicated with the bottom shell cavity (33) after sequentially passing through the cigarette circulating channel (27) and the cigarette guide port (24).

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