A new type of very early smoke detector

Abstract

This utility model discloses a novel very early smoke detector, relating to the technical field of smoke detection equipment. A main intake pipe is connected to several intake branch pipes. An auxiliary intake pump is installed on the outside of the smoke detector body. Several sampling tubes are fixedly connected to the side walls of the intake branch pipes, communicating with the intake branch pipes. An aperture adjustment mechanism is installed on the outside of the sampling tubes. The auxiliary intake pump, located on the outside of the smoke detector body, connects to the main intake pipe via a connecting pipe and an internally threaded connecting cylinder during use. The auxiliary pump and the smoke detector body's intake device work together to form a two-stage intake structure, effectively compensating for friction loss along long-distance pipelines and ensuring flow at the end of the sampling process. The aperture adjustment mechanism allows for adjustment of the effective sampling hole size by adjusting the overlap between the ventilation hole and the sampling port via a rotatable adjustment plate.

Description

Technical Field

[0001] This utility model relates to the field of smoke detection equipment technology, and in particular to a novel very early smoke detector. Background Technology

[0002] Very Early Smoke Detectors (ASDs) are fire warning systems that combine active aspiration sampling with high-sensitivity laser detection technology. Capable of detecting smoke particles at the ppm level, they are widely used in large spaces and cleanrooms. Their core advantage lies in their ability to provide early warning during the smoldering stage of a fire, buying crucial time for emergency response.

[0003] However, existing systems face significant performance degradation in high-airflow environments and long-distance pipelines: insufficient power of the built-in suction pump leads to a decrease in sampling flow rate, and friction loss along the pipeline causes a delay in end-point response, resulting in alarms or response timeouts, which in turn prevents staff from detecting hazards in time and providing timely rescue. Therefore, this application proposes a novel very early smoke detector to solve the problem of slow response in existing very early smoke detectors. Utility Model Content

[0004] The purpose of this invention is to provide a novel very early smoke detector that solves the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A novel very early smoke detector, comprising a smoke detector body, an input end of which is connected to a main intake pipe, a plurality of intake branch pipes connected to the main intake pipe, all of which are connected to the main intake pipe, an auxiliary intake pump disposed on the outside of the smoke detector body, an inlet pipe connected to the input end of the auxiliary intake pump, an outlet pipe connected to the output end of the auxiliary intake pump, two connecting pipes fixedly connected to the side wall of the main intake pipe, the connecting pipes being connected to the main intake pipe, an internally threaded connecting cylinder connected to the end of the inlet pipe and the outlet pipe away from the auxiliary intake pump, the internally threaded connecting cylinder being adapted to the connecting pipe, a plurality of sampling pipes fixedly connected to the side wall of the intake branch pipes, the sampling pipes being connected to the intake branch pipes, and an aperture adjustment mechanism disposed on the outside of the sampling pipes.

[0006] Preferably, a second sealing ring is provided on the inner wall of the internally threaded connecting cylinder near the auxiliary suction pump, the connecting pipe is an externally threaded pipe, and a sealing cap is provided on the outside of the connecting pipe, the sealing cap being adapted to the connecting pipe.

[0007] Preferably, the sampling tube is an externally threaded tube, and the aperture adjustment mechanism includes an internally threaded tube and an adjustment cylinder. The internally threaded tube is adapted to the sampling tube. The right end of the internally threaded tube passes through the left side wall of the adjustment cylinder and communicates with the adjustment cylinder. A sampling port is provided on the right side wall of the adjustment cylinder. An adjustment plate is rotatably connected inside the adjustment cylinder. The right end of the adjustment plate abuts against the left inner wall of the adjustment cylinder. A vent hole is provided on the adjustment plate. A limit slide is provided on the right side wall of the adjustment cylinder. An adjustment lever is fixedly connected to the right end of the adjustment plate. The right end of the adjustment lever passes through the limit slide and extends to the right side of the adjustment cylinder. A sealing ring is provided inside the internally threaded tube. The right end of the sealing ring abuts against the left end of the adjustment cylinder.

[0008] Preferably, the limiting slide is arc-shaped, and the adjusting lever is fitted with an abutting rubber sleeve, the outer wall of the abutting rubber sleeve abutting against the inner wall of the limiting slide.

[0009] Preferably, a connecting ring is rotatably connected to the sampling tube, and a spring rope is fixedly connected to the side wall of the connecting ring. The end of the spring rope away from the connecting ring is fixedly connected to the outer wall of the adjusting cylinder.

[0010] Preferably, the intake main pipe is equipped with a filter and a ventilation valve, the ventilation valve being located between the two connecting pipes, and the filter being located above the upper connecting pipe.

[0011] Compared with related technologies, the novel very early smoke detector provided by this utility model has the following beneficial effects:

[0012] 1. This utility model provides a novel very early smoke detector. In this device, an auxiliary air pump is set on the outside of the smoke detector body. In use, the air inlet pipe and air outlet pipe on the auxiliary air pump are connected to the main air intake pipe through a connecting pipe and an internally threaded connecting cylinder. By using the auxiliary air pump and the air intake device of the smoke detector body together, a two-stage air intake structure is formed, which effectively compensates for the friction loss along the long-distance pipeline network and ensures the flow rate of the end sampling. This effectively solves the problem of alarm or response timeout in traditional equipment in high airflow environment and long-distance pipeline network use.

[0013] 2. This utility model provides a novel very early smoke detector. The auxiliary air pump and the main air intake pipe are easily connected and can be disassembled or assembled at will according to the user's needs. At the same time, an aperture adjustment mechanism is provided on the sampling tube on the air intake branch pipe. During use, the size of the overlap between the air vent and the sampling port can be adjusted by the rotatable adjustment plate according to the aperture adjustment mechanism, thereby adjusting the size of the effective collection hole. This allows the device to adapt to the low-concentration smoke capture in cleanrooms and cope with the high airflow interference in storage spaces. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0016] Figure 3 This is a schematic cross-sectional view of the connection between the auxiliary suction pump and the connecting pipe of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the intake branch tube of this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the aperture adjustment mechanism of this utility model;

[0019] Figure 6 This is a schematic diagram of the adjustment state structure of this utility model;

[0020] Figure 7 This is a three-dimensional cross-sectional view of the sampling tube location of this utility model;

[0021] Figure 8 This is a three-dimensional structural diagram of the adjustment plate of this utility model.

[0022] In the diagram: 1. Main body of the smoke detector; 2. Main intake pipe; 3. Ventilation valve; 4. Filter; 5. Auxiliary intake pump; 6. Inlet pipe; 7. Outlet pipe; 8. Internally threaded connecting cylinder; 9. Connecting pipe; 10. Inlet branch pipe; 11. Sampling pipe; 12. Connecting ring; 13. Spring rope; 14. Internally threaded pipe; 15. Adjusting cylinder; 16. Sampling port; 17. Adjusting plate; 18. Ventilation hole; 19. Limiting slide; 20. Adjusting lever; 21. Sealing ring one; 22. Sealing ring two; 23. Sealing cap; 24. Abutment rubber sleeve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-8This utility model provides a technical solution: a novel very early smoke detector, including a smoke detector body 1, an intake main pipe 2 connected to the input end of the smoke detector body 1, a plurality of intake branch pipes 10 connected to the intake main pipe 2, all of the plurality of intake branch pipes 10 being connected to the intake main pipe 2, an auxiliary intake pump 5 provided on the outside of the smoke detector body 1, an intake pipe 6 connected to the input end of the auxiliary intake pump 5, an exhaust pipe 7 connected to the output end of the auxiliary intake pump 5, two connecting pipes 9 fixedly connected to the side wall of the intake main pipe 2, the connecting pipes 9 being connected to the intake main pipe 2, an internal thread connecting cylinder 8 connected to the end of the intake pipe 6 and the exhaust pipe 7 away from the auxiliary intake pump 5, the internal thread connecting cylinder 8 being adapted to the connecting pipe 9, a plurality of sampling pipes 11 fixedly connected to the side wall of the intake branch pipes 10, the sampling pipes 11 being connected to the intake branch pipes 10, and an aperture adjustment mechanism provided on the outside of the sampling pipes 11;

[0025] A sealing ring 22 is provided on the inner wall of the internally threaded connecting cylinder 8 near the auxiliary suction pump 5. The connecting pipe 9 is an externally threaded pipe, and a sealing cap 23 is provided on the outside of the connecting pipe 9. The sealing cap 23 is adapted to the connecting pipe 9. When the auxiliary suction pump 5 is not required, the sealing cap 23 is used to seal the connecting pipe 9, and the device can be used by opening the ventilation valve 3. When the auxiliary suction pump 5 is required, the ventilation valve 3 is closed. The air inlet pipe 6 and the air outlet pipe 7 on the auxiliary suction pump 5 are connected to the upper and lower connecting pipes 9 respectively. The auxiliary suction pump 5 and the suction device of the smoke detector body 1 are used in conjunction to form a two-stage suction structure, which effectively compensates for the friction loss of long-distance pipelines and ensures the flow rate of the end sampling.

[0026] The sampling tube 11 is an externally threaded tube. The aperture adjustment mechanism includes an internally threaded tube 14 and an adjusting cylinder 15. The internally threaded tube 14 is adapted to the sampling tube 11. The right end of the internally threaded tube 14 passes through the left side wall of the adjusting cylinder 15 and communicates with the adjusting cylinder 15. A sampling port 16 is opened on the right side wall of the adjusting cylinder 15. An adjusting plate 17 is rotatably connected inside the adjusting cylinder 15. The right end of the adjusting plate 17 abuts against the left inner wall of the adjusting cylinder 15. A vent hole 18 is opened on the adjusting plate 17. A limit slide 19 is opened on the right side wall of the adjusting cylinder 15. The right end of the adjusting plate 17 is fixedly connected to... An adjustment lever 20 is provided. The right end of the adjustment lever 20 passes through the limiting slide 19 and extends to the right side of the adjustment cylinder 15. A sealing ring 21 is provided inside the internal threaded tube 14. The right end of the sealing ring 21 abuts against the left end of the adjustment cylinder 15. During adjustment, the adjustment lever 20 is moved to slide in the limiting slide 19. As the adjustment plate 17 rotates, the overlap size of the vent 18 and the sampling port 16 is adjusted, thereby adjusting the size of the effective collection hole. This allows the device to adapt to the low-concentration smoke capture in cleanrooms and cope with the high airflow interference in storage spaces.

[0027] The limiting slide 19 is arc-shaped, and the adjusting lever 20 is fitted with an abutting rubber sleeve 24. The outer wall of the abutting rubber sleeve 24 abuts against the inner wall of the limiting slide 19. The cooperation between the abutting rubber sleeve 24 and the limiting slide 19 ensures stability when adjusting the overlap size of the vent 18 and the sampling port 16, and avoids changes in the position of the adjusting plate 17 during use, thereby avoiding affecting the normal use of the equipment.

[0028] A connecting ring 12 is rotatably connected to the sampling tube 11. A spring rope 13 is fixedly connected to the side wall of the connecting ring 12. The end of the spring rope 13 away from the connecting ring 12 is fixedly connected to the outer wall of the adjusting cylinder 15. The size of the sampling tube 11 is the same as that of the connecting tube 9. The air inlet pipe 6 at the input end of the auxiliary air pump 5 can be matched with the sampling tube 11 at different positions according to the usage requirements, thereby meeting different usage requirements. When the sampling tube 11 is connected to the air inlet pipe 6 at the input end of the auxiliary air pump 5, the aperture adjustment mechanism is connected by the spring rope 13, thereby preventing the aperture adjustment mechanism from being lost.

[0029] The intake pipe 2 is equipped with a filter 4 and a ventilation valve 3. The ventilation valve 3 is located between the two connecting pipes 9, and the filter 4 is located above the upper connecting pipe 9. In use, the filter 4 is used to filter out large interfering particles in the sampled gas to avoid affecting the detection device inside the smoke detector body 1.

[0030] Working principle: In use, the main intake pipe 2 is connected to the main body 1 of the smoke detector, and the intake branch pipe 10 is connected to the main intake pipe 2. The intake branch pipe 10 is placed at the location to be detected. The connection between the orifice adjustment mechanism and the sampling pipe 11 is achieved by the threaded connection between the internal threaded pipe 14 and the sampling pipe 11. The position of the sampling through hole is adjusted according to the height of the installation position of the intake branch pipe 10 and the length of the distance from the auxiliary intake pump 5. During adjustment, the adjustment lever 20 is moved to slide within the limit slide 19. As the adjustment plate 17 rotates, the overlap size of the ventilation hole 18 and the sampling port 16 is adjusted, thereby adjusting the size of the smoke detector. The size of the effective sampling hole can be adjusted so that the device can adapt to both the low-concentration smoke capture in cleanrooms and the high airflow interference in storage spaces. In use, the air inlet pipe 6 and air outlet pipe 7 on the auxiliary suction pump 5 are connected to the main suction pipe 2 through the connecting pipe 9 and the internal threaded connecting cylinder 8. The auxiliary suction pump 5 and the suction device of the smoke detector body 1 work together to form a two-stage suction structure, which effectively compensates for the friction loss along the long-distance pipeline network and ensures the flow rate of the end sampling. This effectively solves the problem of alarm or response timeout in traditional equipment in high airflow environments and long-distance pipeline networks.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel very early smoke detector, comprising a smoke detector body (1), characterized in that: The smoke detector body (1) has an input end connected to a main intake pipe (2), and several intake branch pipes (10) connected to the main intake pipe (2). All of the intake branch pipes (10) are connected to the main intake pipe (2). An auxiliary intake pump (5) is installed on the outside of the smoke detector body (1). An intake pipe (6) is connected to the input end of the auxiliary intake pump (5), and an outlet pipe (7) is connected to the output end of the auxiliary intake pump (5). The side wall of the main intake pipe (2) is fixed with... Two connecting pipes (9) are connected, and the connecting pipes (9) are connected to the main intake pipe (2). The end of the intake pipe (6) and the exhaust pipe (7) away from the auxiliary intake pump (5) is connected to an internal threaded connecting cylinder (8). The internal threaded connecting cylinder (8) is adapted to the connecting pipe (9). Several sampling tubes (11) are fixedly connected to the side wall of the intake branch pipe (10). The sampling tubes (11) are connected to the intake branch pipe (10). An aperture adjustment mechanism is provided on the outside of the sampling tubes (11).

2. The novel very early smoke detector according to claim 1, characterized in that: The inner wall of the internal threaded connecting cylinder (8) near the auxiliary suction pump (5) is provided with a sealing ring 22. The connecting pipe (9) is an external threaded pipe. A sealing cap (23) is provided on the outside of the connecting pipe (9). The sealing cap (23) is adapted to the connecting pipe (9).

3. A novel very early smoke detector according to claim 1, characterized in that: The sampling tube (11) is an externally threaded tube. The aperture adjustment mechanism includes an internally threaded tube (14) and an adjusting cylinder (15). The internally threaded tube (14) is adapted to the sampling tube (11). The right end of the internally threaded tube (14) passes through the left side wall of the adjusting cylinder (15) and communicates with the adjusting cylinder (15). A sampling port (16) is provided on the right side wall of the adjusting cylinder (15). An adjusting plate (17) is rotatably connected inside the adjusting cylinder (15). The right end of the adjusting plate (17) is connected to the adjusting cylinder (15). The left inner wall of the adjusting plate (17) is abutted, and a vent hole (18) is provided on the adjusting plate (17). A limit slide (19) is provided on the right side wall of the adjusting cylinder (15). An adjusting lever (20) is fixedly connected to the right end of the adjusting plate (17). The right end of the adjusting lever (20) passes through the limit slide (19) and extends to the right side of the adjusting cylinder (15). A sealing ring (21) is provided in the internal threaded tube (14). The right end of the sealing ring (21) abuts against the left end of the adjusting cylinder (15).

4. A novel very early smoke detector according to claim 3, characterized in that: The limiting slide (19) is arc-shaped, and the adjusting lever (20) is fitted with an abutting rubber sleeve (24), the outer wall of the abutting rubber sleeve (24) abutting against the inner wall of the limiting slide (19).

5. A novel very early smoke detector according to claim 3, characterized in that: A connecting ring (12) is rotatably connected to the sampling tube (11), and a spring rope (13) is fixedly connected to the side wall of the connecting ring (12). The end of the spring rope (13) away from the connecting ring (12) is fixedly connected to the outer wall of the adjusting cylinder (15).

6. A novel very early smoke detector according to claim 1, characterized in that: The intake pipe (2) is equipped with a filter (4) and a ventilation valve (3). The ventilation valve (3) is located between two connecting pipes (9), and the filter (4) is located above the upper connecting pipe (9).

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