A wireless fire alarm device

Abstract

The present invention discloses a wireless fire alarm device, which specifically relates to the field of alarm technology, and mainly includes a shell, a support frame and a screw rod, wherein the support frame is fixed on one side of the outer wall of the shell, the screw rod is rotatably connected inside the support frame, and a displacement self-checking and proofreading mechanism is installed on one side of the inner wall of the support frame; wherein the displacement self-checking and proofreading mechanism includes a driving motor fixedly installed on one side of the inner wall of the support frame, and the driving motor is used to drive the screw rod to rotate. The present invention adopts a displacement self-checking and proofreading mechanism, and when the self-checking and proofreading time set by the wireless controller is reached, the driving motor is started through the wireless controller, and the rotating nozzle carrying the side spraying rectangular tube is inserted into the smoke inlet hole, and the rotating nozzle carrying the side spraying rectangular tube can realize reciprocating rotation at a specified angle, and the side spraying rectangular tube can inject the proofreading smoke into the shell, and the alarm device can realize automatic safety detection and proofreading, and the damage of the alarm device is known in time, and once damaged, it can be repaired in time, which greatly improves the safety of the alarm device.

Description

Technical Field

[0001] The present invention relates to the field of alarm technology, and more specifically, to a wireless fire alarm device. Background Art

[0002] The wireless fire alarm device can monitor the smoke and fire related parameters in the environment in real time. Once an abnormal situation is detected, the alarm will be triggered immediately for early detection. In the early stage of the fire, the smoldering stage, the device can send out an early warning signal, so that personnel have enough time to take countermeasures and extinguish the fire in its infancy.

[0003] After searching the existing published technical documents, the Chinese patent announcement number CN208766802U discloses a wireless fire alarm device in fire protection engineering. The fire alarm technology has the same indicator light plugged into the first fixed ring and the second fixed ring. The device can detect the smoke concentration at the installation location in real time, and will alarm in time when a fire occurs. It has high sensitivity, which is convenient for timely rescue and improves the practicality of the device. The wireless fire alarm device also has the following problems when in use.

[0004] When the alarm device is used for a wireless fire alarm, it needs to sense the alarm through smoke, and the smoke sensor component needs to be installed at a high place. It is difficult to perform self-inspection and calibration of the smoke sensor component regularly. Even if the smoke sensor component is damaged, it is difficult to know, and it is difficult to repair and replace the damaged smoke sensor component in time. In this way, if a fire occurs and the smoke sensor is damaged, it is difficult to automatically realize the smoke alarm, and the alarm device is difficult to realize automatic safety detection and calibration, resulting in poor safety of the alarm device. For this purpose, a wireless fire alarm device is provided. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a wireless fire alarm device.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wireless fire alarm device, comprising a shell, a support frame and a screw, wherein the support frame is fixed to one side of the outer wall of the shell, the screw is rotatably connected to the inside of the support frame, and a displacement self-checking and proofreading mechanism is installed on one side of the inner wall of the support frame; the displacement self-checking and proofreading mechanism comprises a driving motor fixedly installed on one side of the inner wall of the support frame, the driving motor is used to drive the screw to rotate, and the outer wall of the screw is threadedly connected with a threaded sleeve block.

[0007] A socket block is fixedly installed on one side of the threaded sleeve; a rotating nozzle is rotatably connected to the inner wall of the socket block, and the rotating nozzle is rotatably connected to the inside of the threaded sleeve; a gear ring is fixedly connected to the outer wall of the rotating nozzle at one side of the threaded sleeve, and a transmission gear ring is meshingly connected to the upper part of the outer wall of the gear ring; a transmission motor is embedded in the transmission gear ring, and the outer wall of the output end of the transmission motor is fixedly connected to the transmission gear ring; a conveying and boosting mechanism is installed at the bottom end of the outer wall of the rotating nozzle; a distribution and drainage mechanism is embedded on the other side of the outer wall of the shell.

[0008] Preferably, the outer wall of the threaded sleeve is slidably connected to the inner wall of the support frame, and the inner wall of the support frame and the outer wall of the threaded sleeve are both set to smooth surfaces, a side spray rectangular tube is embedded and fixedly connected to one side of the outer wall of the rotating nozzle, and the rotating nozzle and the side spray rectangular tube are communicated, a plurality of smoke inlet holes are opened on the outer wall of the shell near its bottom end, a distance sensor fixedly connected to the shell is provided on one side of one of the smoke inlet holes, an angle sensor is fixedly installed on one end of the rotating nozzle, an arc-shaped support plate is fixedly connected to one side of the outer wall of the angle sensor, a support shaft is installed on one side of the arc-shaped support plate, and the arc-shaped support plate and the threaded sleeve are fixedly connected to the support shaft, and the arc-shaped support plate is fixedly connected to the transmission motor.

[0009] Preferably, a filter plate is fixedly connected to the bottom end of the inner wall of the shell, a plurality of photoresistors are fixedly mounted on the top end of the filter plate, and a light-emitting diode is provided above each of the photoresistors; a circuit substrate is mounted on the top end of the light-emitting diode, and a plurality of the light-emitting diodes are fixedly connected to the circuit substrate, a backup battery is fixedly connected to the bottom end of the circuit substrate and located at one side of the light-emitting diode, and a wireless controller is fixedly mounted on one side of the backup battery, and a mounting plate is fixedly connected to the top end of the shell; a buzzer is fixedly connected to one side of the outer wall of the shell and located at the bottom end of the mounting plate, and the buzzer is used for fire alarm.

[0010] When the present technical solution is used for fire alarm, the self-checking and calibration time is set on the wireless controller. When the self-checking and calibration time set by the wireless controller is reached, the driving motor is started through the wireless controller, and the screw rod carries the threaded sleeve block to move right under the action of the thread transmission force. The threaded sleeve block carries the support shaft to move the arc support plate right, the angle sensor carries the rotating nozzle to move right, and the rotating nozzle carries the side spraying rectangular tube to insert into the smoke inlet hole. The wireless controller starts the transmission motor, the transmission gear ring rotates forward, the gear ring carries the rotating nozzle to rotate, the rotating nozzle carries the side spraying rectangular tube to rotate counterclockwise upward, and after the rotating nozzle rotates 180 degrees counterclockwise, the transmission motor drives the transmission gear ring to reverse, and the rotating nozzle rotates 180 degrees clockwise. The rotating nozzle carries the side spraying rectangular tube to achieve reciprocating rotation at a specified angle.

[0011] Preferably, the conveying and pressurizing mechanism includes a hose fixedly mounted on the bottom end of the outer wall of the rotating nozzle; the top end of the hose is threadedly connected to an electric valve, and the top end of the electric valve is fixedly connected to a calibration smoke tank, the calibration smoke tank is used to store calibration smoke, one end of the calibration smoke tank is welded to a boosting pipe, and one end of the boosting pipe is fixedly mounted with an air pump, the input end of the air pump is threadedly connected to an electric valve, the hose is connected to the rotating nozzle, and the calibration smoke tank is made of stainless steel.

[0012] When this technical solution is used for fire alarm, the wireless controller starts the air pump and opens the electric valve. The air pump fills the booster pipe, which then transports the smoke to the calibration smoke tank. The calibration smoke stored in the calibration smoke tank enters the electric valve. The calibration smoke enters the hose along the electric valve, and the rotating nozzle fills the side spraying rectangular tube. The side spraying rectangular tube reciprocates and rotates under the filter plate to spray the calibration smoke. Thus, the calibration smoke can enter the photoresistor and the light-emitting diode under the pressure along the filter plate for automatic detection and calibration.

[0013] Preferably, the distribution and drainage mechanism includes a suction pipe embedded in the other side of the outer wall of the shell; a negative pressure pump is fixedly installed on one end of the suction pipe, and the output end of the negative pressure pump is threadedly connected to a connecting pipe, and an external discharge side pipe is welded to the top of the connecting pipe; the other end of the suction pipe is fixedly connected to a ring pipe, and the inner wall of the ring pipe is fixedly connected to a plurality of diversion suction pipes, and the plurality of diversion suction pipes are arranged in a circular ring with equal spacing, and the plurality of diversion suction pipes are all connected to the ring pipe.

[0014] When the technical solution is used for fire alarm, after the self-inspection and calibration is completed, the electric valve is closed to stop the air pump drive, and the negative pressure pump causes the multiple branch suction pipes to generate negative pressure suction. The calibration smoke enters the ring pipe along the multiple branch suction pipes and is transported to the connecting pipe through the suction pipe. The external exhaust side pipe can discharge the calibration smoke with side discharge and pressurization, realizing distributed discharge operation, and new air enters the smoke inlet hole, quickly restoring the normal fire alarm use inside the shell.

[0015] Technical effects and advantages of the present invention:

[0016] 1. The present invention adopts a displacement self-checking and proofreading mechanism. When the self-checking and proofreading time set by the wireless controller is reached, the driving motor is started through the wireless controller, and the rotating nozzle carries the side spraying rectangular tube and is inserted into the smoke inlet hole. The transmission motor drives the transmission gear ring to rotate forward. After the rotating nozzle rotates counterclockwise by 180 degrees, the transmission motor drives the transmission gear ring to reverse. The transmission gear ring carries the gear ring to make the rotating nozzle rotate clockwise. The rotating nozzle carries the side spraying rectangular tube and can realize reciprocating rotation at a specified angle. The side spraying rectangular tube can inject proofreading smoke into the shell, automatically check whether there are problems with the photoresistor and the light-emitting diode smoke sensor components inside the shell, and promptly notify the maintenance personnel to come to the site for repair if there are problems. The alarm device can realize automatic safety detection and proofreading to avoid the alarm device being damaged without knowing it. Once damaged, it can be repaired in time, which greatly improves the safety of the alarm device.

[0017] 2. The present invention utilizes a conveying and pressurizing mechanism. The wireless controller starts the air pump and opens the electric valve. The air from the air pump is pumped into the pressurizing pipe, which is then transported to the inside of the proofreading smoke tank. The proofreading smoke enters the hose along the electric valve and is then transported to the rotating nozzle. The side-spraying rectangular tube realizes reciprocating rotation and spraying of the proofreading smoke under the filter orifice plate. The proofreading smoke can be pressurized and transported to the filter orifice plate, and automatic safety detection and proofreading can be quickly performed along the filter orifice plate holes, thereby improving the safety of the alarm device.

[0018] 3. The present invention distributes the drainage mechanism. After the self-checking and calibration is completed, the electric valve is closed to stop the air pump driving, and the negative pressure pump is started at the same time. Multiple diversion suction pipes can suck the calibration smoke inside the shell, which is collected by the ring pipe and transported to the suction pipe, and then transported to the connecting pipe through the suction pipe. New air enters the smoke inlet hole, and the normal fire alarm use inside the shell is quickly restored. The automatic safety detection and calibration is faster, and the safety of the alarm device is improved.

[0019] According to the mutual influence of the above multiple functions, first, the rotating nozzle carrying the side spray rectangular tube can realize reciprocating rotation at a specified angle, and secondly, the proofreading smoke is pressurized and delivered to the filter plate. Finally, after the self-checking and proofreading is completed, the proofreading smoke is delivered to the connecting pipe through the suction pipe for rapid discharge, and new air enters the smoke inlet. In summary, the alarm device can realize automatic safety detection and proofreading, avoid the alarm device being damaged without knowing it, and repair it in time if it is damaged, which greatly improves the safety of the alarm device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the wireless fire alarm device of the present invention when viewed from above.

[0021] Figure 2 It is a schematic diagram of the partial structure of the connection between the support frame and the drive motor of the present invention.

[0022] Figure 3For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0023] Figure 4 It is a schematic diagram of the local structure of the connection between the arc-shaped support plate and the support shaft in a top view of the present invention.

[0024] Figure 5 It is a schematic diagram of the vertical cross-section structure of the wireless fire alarm device of the present invention.

[0025] Figure 6 It is a schematic diagram of the local structure of the vertical section of the connection between the mounting plate and the shell of the present invention.

[0026] Figure 7 It is a schematic diagram of the partial structure of the connection between the shell and the support frame of the present invention when viewed from above.

[0027] Figure 8 It is a schematic diagram of the local structure of the connection between the boost pipe and the air pump of the present invention.

[0028] Fig. 9 It is a schematic diagram of the local structure of the vertical section of the connection between the annular pipe and the suction pipe of the present invention.

[0029] The accompanying drawings are marked as follows: 1. shell; 2. support frame; 3. screw; 4. drive motor; 5. threaded sleeve block; 6. sleeve block; 7. rotating nozzle; 8. gear ring; 9. transmission gear ring; 10. transmission motor; 11. side spray rectangular tube; 12. smoke inlet hole; 13. distance sensor; 14. angle sensor; 15. arc support plate; 16. support shaft; 17. filter hole plate; 18. photoresistor; 19. light-emitting diode; 20. circuit substrate; 21. backup battery; 22. wireless controller; 23. mounting plate; 24. buzzer; 25. hose; 26. electric valve; 27. proofreading smoke tank; 28. booster pipe; 29. ​​air pump; 30. electric valve; 31. suction pipe; 32. negative pressure pump; 33. connecting pipe; 34. external side pipe; 35. ring pipe; 36. diversion suction pipe. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In this embodiment, as shown in the attached Figure 1-9A wireless fire alarm device is shown, which is provided with a displacement self-checking and proofreading mechanism, a conveying and pressurizing mechanism, and a distribution and drainage mechanism. The settings of various mechanisms and components enable the alarm device to realize automatic safety detection and proofreading, thereby avoiding the alarm device being damaged without knowing it, and timely repairing once damaged, thereby greatly improving the safety of the alarm device. The specific structural settings of various mechanisms and components are as follows.

[0032] In this embodiment, as shown in the attached Figure 1-4 As shown, the support frame 2 is fixed on one side of the outer wall of the shell 1, the screw 3 is rotatably connected to the inside of the support frame 2, and a displacement self-checking and proofreading mechanism is installed on one side of the inner wall of the support frame 2; the displacement self-checking and proofreading mechanism includes a driving motor 4 fixedly installed on one side of the inner wall of the support frame 2, the driving motor 4 is used to drive the screw 3 to rotate, the outer wall of the screw 3 is threadedly connected with a threaded sleeve block 5, and a socket block 6 is fixedly installed on one side of the threaded sleeve block 5; the inner wall of the socket block 6 is rotatably connected with a rotating nozzle 7.

[0033] The rotating nozzle 7 is rotatably connected to the inside of the threaded sleeve 5, and the outer wall of the rotating nozzle 7 is fixedly connected to a gear ring 8 at a position on one side of the threaded sleeve 5, and a transmission gear ring 9 is meshed and connected to the upper part of the outer wall of the gear ring 8, and a transmission motor 10 is embedded and installed inside the transmission gear ring 9, and the outer wall of the output end of the transmission motor 10 is fixedly connected to the transmission gear ring 9; a conveying and boosting mechanism is installed at the bottom end of the outer wall of the rotating nozzle 7; and a distribution and drainage mechanism is embedded and installed on the other side of the outer wall of the housing 1. The outer wall of the threaded sleeve 5 is slidably connected to the inner wall of the support frame 2, and the inner wall of the support frame 2 and the outer wall of the threaded sleeve 5 are both set as smooth surfaces.

[0034] In this embodiment, as shown in the attached Figure 1-7 As shown, a side spray rectangular tube 11 is embedded and fixedly connected to one side of the outer wall of the rotating nozzle 7, and the rotating nozzle 7 and the side spray rectangular tube 11 are connected, so that the rotating nozzle 7 can carry the side spray rectangular tube 11 and insert it into the smoke inlet hole 12, and the side spray rectangular tube 11 can reciprocate and rotate to spray and calibrate smoke under the filter plate 17. A plurality of smoke inlet holes 12 are opened on the outer wall of the shell 1 near its bottom end, and a distance sensor 13 fixedly connected to the shell 1 is provided on one side of one of the smoke inlet holes 12, so that smoke can enter the plurality of smoke inlet holes 12 on the shell 1, and the distance sensor 13 can realize distance sensing of the right end of the rotating nozzle 7 to ensure that the rotating nozzle 7 can move to a specified distance position.

[0035] In this embodiment, as shown in the attached Figure 3-6As shown, an angle sensor 14 is fixedly installed at one end of the rotating nozzle 7, and an arc-shaped support plate 15 is fixedly connected to one side of the outer wall of the angle sensor 14. A support shaft 16 is installed on one side of the arc-shaped support plate 15, and the arc-shaped support plate 15 and the threaded sleeve block 5 are fixedly connected to the support shaft 16, and the arc-shaped support plate 15 is fixedly connected to the transmission motor 10, so that the support shaft 16 supports the arc-shaped support plate 15, and the arc-shaped support plate 15 supports the transmission motor 10 and the angle sensor 14. The rotating nozzle 7 realizes angle sensing on the angle sensor 14 to ensure that the rotating nozzle 7 can reciprocate at a specified angle.

[0036] A filter plate 17 is fixedly connected to the bottom of the inner wall of the housing 1, and a plurality of photoresistors 18 are fixedly installed on the top of the filter plate 17, and a light-emitting diode 19 is arranged above each photoresistor 18; a circuit substrate 20 is installed on the top of the light-emitting diode 19, and the plurality of light-emitting diodes 19 are fixedly connected to the circuit substrate 20, a backup battery 21 is fixedly connected to the bottom of the circuit substrate 20 and located at one side of the light-emitting diode 19, and a wireless controller 22 is fixedly installed on one side of the backup battery 21, and a mounting plate 23 is fixedly connected to the top of the housing 1; a side of the outer wall of the housing 1 and located at the mounting plate 23 A buzzer 24 is fixedly connected at the bottom position, and the buzzer 24 is used for fire alarm, so that smoke can enter the filter plate 17 through the smoke inlet 12, and the smoke is discharged upward along the holes on the filter plate 17 to between the photoresistor 18 and the light-emitting diode 19. When there is smoke, the smoke particles will scatter the light emitted by the light-emitting diode 19, causing the light intensity received by the photoresistor 18 to weaken. The wireless controller 22 is powered by the backup battery 21, and the wireless controller 22 starts the buzzer 24 to realize the alarm prompt. At the same time, the wireless controller 22 can remotely start the alarm in the monitoring room to realize the alarm operation.

[0037] In this embodiment, as shown in the attached Figure 7-8 As shown, the conveying and pressurizing mechanism includes a hose 25 fixedly mounted on the bottom end of the outer wall of the rotating nozzle 7; the top end of the hose 25 is threadedly connected to an electric valve 26, and the top end of the electric valve 26 is fixedly connected to a calibration smoke tank 27, the calibration smoke tank 27 is used to store calibration smoke, one end of the calibration smoke tank 27 is welded to a boosting pipe 28, and one end of the boosting pipe 28 is fixedly mounted with an air pump 29, the input end of the air pump 29 is threadedly connected to an electric valve 30, the hose 25 is connected to the rotating nozzle 7, and the calibration smoke tank 27 is made of stainless steel.

[0038] In this embodiment, as shown in the attached Figure 6-9As shown, the distribution and drainage mechanism includes a suction pipe 31 embedded and installed on the other side of the outer wall of the housing 1; a negative pressure pump 32 is fixedly installed at one end of the suction pipe 31, and a connecting pipe 33 is threadedly connected to the output end of the negative pressure pump 32, and an outer discharge side pipe 34 is welded to the top of the connecting pipe 33; the other end of the suction pipe 31 is fixedly connected to a ring pipe 35, and a plurality of diverter suction pipes 36 are fixedly connected to the inner wall of the ring pipe 35. The plurality of diverter suction pipes 36 are arranged in a circular ring with equal spacing, and the plurality of diverter suction pipes 36 are all connected to the ring pipe 35.

[0039] The method of using the wireless fire alarm device of the present invention is as follows:

[0040] Step 1. During installation and use, the mounting plate 23 is fixed to the roof of the house by expansion bolts. The mounting plate 23 supports the shell 1 to increase the stability of the shell 1. When a fire occurs, smoke will enter the multiple smoke inlets 12 on the shell 1, and the smoke will enter the filter plate 17 through the smoke inlets 12. The smoke will be discharged along the holes on the filter plate 17 to the space between the photoresistor 18 and the light-emitting diode 19, and the light-emitting diode 19 will shine on the photoresistor 18. When there is smoke, the smoke particles will scatter the light emitted by the light-emitting diode 19, causing the light intensity received by the photoresistor 18 to weaken, thereby supplying power to the wireless controller 22 through the backup battery 21, and the wireless controller 22 will start the buzzer 24, and the buzzer 24 will realize the alarm operation. At the same time, the wireless controller 22 can remotely start the alarm in the monitoring room, thereby realizing the wireless alarm operation.

[0041] Step 2: When the self-checking and calibration of displacement is performed, the self-checking and calibration time is set on the wireless controller 22. When the self-checking and calibration time set by the wireless controller 22 is reached, the driving motor 4 is started through the wireless controller 22, and the driving motor 4 drives the screw 3 to rotate inside the support frame 2. The screw 3 carries the threaded sleeve block 5 to move right under the action of the thread transmission force. The threaded sleeve block 5 drives the sleeve block 6 to move right, and the threaded sleeve block 5 carries the support shaft 16 to move the arc support plate 15 right. The arc support plate 15 carries the transmission motor 10 and the angle sensor 14 to move right. The angle sensor 14 carries the rotating nozzle 7 to move right, and the rotating nozzle 7 carries the side spraying rectangular tube 11 to be inserted into the smoke inlet 12. The distance sensor 13 can realize distance sensing of the right end of the rotating nozzle 7. When the distance sensed by the distance sensor 13 is the same as the distance set by the wireless controller 22, the side spraying rectangular tube 11 can be located at the bottom of the filter plate 17.

[0042] Then the wireless controller 22 starts the transmission motor 10, the support shaft 16 supports the arc support plate 15, and the arc support plate 15 supports the transmission motor 10 and the angle sensor 14. The transmission motor 10 drives the transmission gear ring 9 to rotate forward, the transmission gear ring 9 carries the gear ring 8 to mesh and transmit, the gear ring 8 carries the rotating nozzle 7 to rotate, the rotating nozzle 7 carries the side spraying rectangular tube 11 to rotate upward counterclockwise, and the rotating nozzle 7 realizes angle sensing on the angle sensor 14. When the rotating nozzle 7 rotates 180 degrees counterclockwise, the transmission motor 10 drives the transmission gear ring 9 to reverse, and the transmission gear ring 9 carries the gear ring 8 to make the rotating nozzle 7 rotate 180 degrees clockwise, so that the rotating nozzle 7 carrying the side spraying rectangular tube 11 can realize reciprocating rotation at a specified angle.

[0043] Step 3: During the delivery and pressurization, the air pump 29 is started and the electric valve 30 is opened through the wireless controller 22, and the external pressurized air enters the air pump 29 along the electric valve 30, and is poured into the pressurization pipe 28 by the air pump 29, and is transported to the inside of the calibration smoke tank 27 by the pressurization pipe 28, and the calibration smoke stored in the calibration smoke tank 27 enters the inside of the electric valve 26. At the same time, the wireless controller 22 opens the electric valve 26.

[0044] The proofreading smoke enters the hose 25 along the electric valve 26, and is transported to the rotating nozzle 7 by the hose 25. The rotating nozzle 7 is poured into the inside of the side spraying rectangular tube 11, and the side spraying rectangular tube 11 realizes reciprocating rotation under the filter hole plate 17 to spray the proofreading smoke, so that the proofreading smoke can enter between the photoresistor 18 and the light-emitting diode 19 along the filter hole plate 17 under the action of pressure. In this way, the light intensity received by the photoresistor 18 is weakened, and the buzzer 24 is started to alarm through the wireless controller 22, so that it can be known that the smoke sensor components of the photoresistor 18 and the light-emitting diode 19 are not damaged. If the buzzer 24 does not generate an alarm, there is a problem with the smoke sensor components of the photoresistor 18 and the light-emitting diode 19, and the maintenance personnel are immediately found for repair and processing. The alarm device can realize automatic safety detection and proofreading to ensure normal alarm and improve the safety of the alarm device.

[0045] Step 4: During distributed discharge, after the self-checking and calibration is completed, the electric valve 26 is closed to stop the driving of the air pump 29, and the negative pressure pump 32 is started at the same time. The negative pressure pump 32 generates negative pressure suction force for the multiple diversion suction pipes 36, and the multiple diversion suction pipes 36 can suck the calibration smoke inside the shell 1. The calibration smoke enters the ring pipe 35 along the multiple diversion suction pipes 36, and is collected by the ring pipe 35 and transported to the suction pipe 31. It is transported to the connecting pipe 33 through the suction pipe 31, and then transported to the external discharge side pipe 34 by the connecting pipe 33. In this way, the external discharge side pipe 34 can discharge the calibration smoke by side discharge and boost pressure, so as to realize the distributed discharge operation, and new air enters the smoke inlet 12, and the normal fire alarm inside the shell 1 is quickly restored. Automatic detection and calibration can be quickly realized, and the calibration smoke is quickly discharged after the automatic calibration is completed, ensuring that the normal fire alarm operation inside the shell 1 is quickly restored.

[0046] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wireless fire alarm device, comprising a housing (1), a support frame (2) and a screw (3), wherein the support frame (2) is fixed to one side of an outer wall of the housing (1), and the screw (3) is rotatably connected to the inside of the support frame (2), characterized in that: A displacement self-checking and calibration mechanism is installed on one side of the inner wall of the support frame (2); The displacement self-checking and calibration mechanism comprises a driving motor (4) fixedly mounted on one side of the inner wall of the support frame (2), the driving motor (4) being used to drive the screw rod (3) to rotate, the outer wall of the screw rod (3) being threadedly connected with a threaded sleeve block (5), and a sleeve block (6) being fixedly mounted on one side of the threaded sleeve block (5); The inner wall of the sleeve block (6) is rotatably connected to a rotating nozzle pipe (7), and the rotating nozzle pipe (7) is rotatably connected to the inside of the threaded sleeve block (5); the outer wall of the rotating nozzle pipe (7) is fixedly connected to a gear ring (8) at a position on one side of the threaded sleeve block (5), and a transmission gear ring (9) is meshingly connected to the upper part of the outer wall of the gear ring (8); a transmission motor (10) is embedded and installed inside the transmission gear ring (9), and the outer wall of the output end of the transmission motor (10) is fixedly connected to the transmission gear ring (9); A conveying and pressurizing mechanism is installed at the bottom end of the outer wall of the rotating nozzle pipe (7), and the conveying and pressurizing mechanism comprises a hose (25) fixedly installed at the bottom end of the outer wall of the rotating nozzle pipe (7); The top end of the hose (25) is connected to an electric valve (26) through a thread, and the top end of the electric valve (26) is fixedly connected to a calibration smoke tank (27), the calibration smoke tank (27) is used to store calibration smoke, one end of the calibration smoke tank (27) is welded to a booster pipe (28), and one end of the booster pipe (28) is fixedly installed with an air pump (29), and the input end of the air pump (29) is connected to an electric valve (30) through a thread; A distribution and drainage mechanism is embedded and installed on the other side of the outer wall of the shell (1), and the distribution and drainage mechanism comprises a suction pipe (31) embedded and installed on the other side of the outer wall of the shell (1); A negative pressure pump (32) is fixedly mounted on one end of the suction pipe (31), and a connecting pipe (33) is threadedly connected to the output end of the negative pressure pump (32), and an external discharge side pipe (34) is welded to the top end of the connecting pipe (33); The other end of the suction pipe (31) is fixedly connected to a ring pipe (35), and the inner wall of the ring pipe (35) is fixedly connected to a plurality of diverter pipes (36), the plurality of diverter pipes (36) are arranged in a circular ring at equal intervals, and the plurality of diverter pipes (36) are all connected to the ring pipe (35).

2. The wireless fire alarm device according to claim 1, characterized in that: The outer wall of the threaded sleeve (5) is slidably connected to the inner wall of the support frame (2), and the inner wall of the support frame (2) and the outer wall of the threaded sleeve (5) are both configured as smooth surfaces.

3. The wireless fire alarm device according to claim 1, characterized in that: A side spray rectangular tube (11) is embedded and fixedly connected to one side of the outer wall of the rotating spray pipe (7), and the rotating spray pipe (7) and the side spray rectangular tube (11) are in communication.

4. The wireless fire alarm device according to claim 1, characterized in that: A plurality of smoke inlet holes (12) are provided on the outer wall of the shell (1) near its bottom end, and a distance sensor (13) fixedly connected to the shell (1) is provided on one side of one of the smoke inlet holes (12).

5. The wireless fire alarm device according to claim 1, characterized in that: An angle sensor (14) is fixedly mounted on one end of the rotating nozzle (7), an arc-shaped support plate (15) is fixedly connected to one side of the outer wall of the angle sensor (14), a support shaft (16) is mounted on one side of the arc-shaped support plate (15), and the arc-shaped support plate (15) and the threaded sleeve block (5) are both fixedly connected to the support shaft (16), and the arc-shaped support plate (15) is fixedly connected to the transmission motor (10).

6. The wireless fire alarm device according to claim 1, characterized in that: A filter plate (17) is fixedly connected to the bottom end of the inner wall of the housing (1), a plurality of photoresistors (18) are fixedly mounted on the top end of the filter plate (17), and a light-emitting diode (19) is provided above each of the photoresistors (18); A circuit substrate (20) is installed at the top of the light-emitting diode (19), and a plurality of the light-emitting diodes (19) are fixedly connected to the circuit substrate (20); a backup battery (21) is fixedly connected to the bottom of the circuit substrate (20) and located on one side of the light-emitting diode (19); a wireless controller (22) is fixedly installed on one side of the backup battery (21); and a mounting plate (23) is fixedly connected to the top of the housing (1); A buzzer (24) is fixedly connected to one side of the outer wall of the housing (1) and located at the bottom end of the mounting plate (23); the buzzer (24) is used for fire alarm.

7. The wireless fire alarm device according to claim 1, characterized in that: The hose (25) is connected to the rotating nozzle (7), and the calibration smoke tank (27) is made of stainless steel.

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