Portable fire-fighting air volume detection device
By incorporating a self-checking lubrication and cleaning mechanism into the portable fire-fighting air volume detection device, the problem of decreased detection accuracy caused by bearing jamming was solved. This enabled the prediction and timely repair of faults, ensuring the accuracy and stability of the detection data and extending the service life of the device.
Patent Information
- Application Number
- CN202610322656.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-17
- Publication Date
- 2026-05-01
AI Technical Summary
In the long-term use of existing duct wind speed and temperature detection devices, the bearings are prone to jamming due to dust intrusion and corrosion, which affects the detection accuracy. In addition, there is no self-inspection mechanism before use, so it is impossible to detect faults in time.
A portable fire-fighting airflow detection device was designed, with a built-in self-checking and lubrication mechanism. Through the cooperation of intelligent sensors and magnets, it realizes automatic detection and lubrication of bearing status, timely identifies jamming faults and performs lubrication repair, and is equipped with a cleaning mechanism to clean the sensor surface.
It enables the prediction and timely repair of faults, improves the safety and reliability of the device, ensures the accuracy and long-term stability of the detection data, and extends the service life of the device.
Smart Images
Figure CN121954152A_ABST
Abstract
Description
A portable fire-fighting air volume detection device Technical Field
[0001] This invention relates to the field of air volume detection technology, specifically a portable fire-fighting air volume detection device. Background Technology
[0002] The portable fire ventilation volume detection device is a lightweight, portable professional instrument designed specifically for fire ventilation systems such as smoke exhaust ducts, air supply outlets, and exhaust outlets. It uses intelligent sensors to quickly and accurately measure airflow velocity and volumetric flow rate, and can simultaneously collect operating parameters such as temperature and pressure. It is widely used in fire protection facility acceptance, daily maintenance, and emergency testing at fire scenes to ensure that smoke control systems can effectively exhaust smoke and ensure the safety of personnel evacuation during fire conditions.
[0003] Existing duct wind speed and temperature detection devices mostly adopt impeller-type detection structures. Their detection fans rely on bearings for rotation. During long-term use, the bearings are prone to jamming due to dust intrusion, corrosion, or insufficient lubrication, directly causing abnormal fan speed. This leads to distorted wind speed detection data and a significant decrease in detection accuracy. Furthermore, existing air volume detection devices generally lack a pre-use self-inspection mechanism, making it impossible to automatically detect the bearing operating status and predict faults before use. Faults are usually only discovered after the device has completely failed, seriously affecting the authenticity and reliability of the detection data. Summary of the Invention
[0004] The purpose of this invention is to provide a portable fire-fighting airflow detection device to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a portable fire-fighting airflow detection device, comprising a device body, an intelligent speed detection sensor disposed inside the device body, an air duct opened inside the device body, a fan rotatably connected inside the air duct, a tail box fixedly connected to the outer wall of the device body, a temperature monitoring sensor fixedly connected to the outer wall of the tail box, a bearing mounted on the tail box, the tail of the fan rotatably connected to the bearing, a tail rod fixedly connected to the outer wall of the fan, and a striking rod fixedly connected to the tail of the tail rod. The tailgate is equipped with a self-checking lubrication mechanism, which includes an electric telescopic rod fixedly connected inside the tailgate. A drive component is fixedly connected to the end of the electric telescopic rod, and a support plate is fixedly connected to the outer wall of the drive component. A collar is fixedly connected to the end of the support plate, and a turntable is rotatably connected to the collar. The turntable has multiple tracks, and trigger magnets are slidably connected inside each track. A return spring is fixedly connected to the outer wall of each trigger magnet, and the end of the return spring away from the trigger magnet is fixedly connected to the inner wall of the track.
[0006] Preferably, a shield is provided in the middle of the plurality of tracks, and a bottom cover is provided at the bottom. A torsion spring flap is installed inside the turntable. A side plate corresponding to the torsion spring flap is fixedly connected to the outer side wall of the tail rod. A driven gear is fixedly sleeved on the outer side wall of the tail rod. A motor is fixedly connected to the outer side wall of the driving component. A transmission gear is fixedly connected to the output end of the motor. The transmission gear meshes with the driven gear.
[0007] Preferably, a top box is fixedly connected inside the tail box, a sliding plate is slidably connected inside the top box, an upper magnetic strip is fixedly connected to the outer wall of the sliding plate, and a lower magnetic strip is provided below the upper magnetic strip. The magnetic poles of the upper and lower magnetic strips are the same as those of the trigger magnet.
[0008] Preferably, a return spring is fixedly connected to the outer wall of the moving plate, and the end of the return spring away from the moving plate is fixedly connected to the inner wall of the top box. A push rod is fixedly connected to the side of the moving plate away from the return spring. A friction ring is fixedly connected inside the top box. The push rod passes through the friction ring and extends to the outside of the top box. The outer wall of the push rod and the contact end of the friction ring are both made of frosted material. A horizontal bar is fixedly connected to the end of the push rod, and a wedge-shaped piece is fixedly connected to the outer wall of the horizontal bar.
[0009] Preferably, an oil storage tank is fixedly connected to the outer wall of the main body of the device, a top pipe is connected to the oil storage tank, and the end of the top pipe away from the oil storage tank extends into the interior of the tail box. An inlet pipe is connected to the bearing, and a sliding tube is slidably connected between the inlet pipe and the top pipe. The end of the sliding tube inside the top pipe is sealed, and a through hole is opened on the sliding tube. A pressing spring is sleeved on the outer wall of the sliding tube, a flipping plate is rotatably connected to the side wall of the sliding tube, and a blocking plate is fixedly connected to the side wall of the sliding tube. The blocking plate is in contact with the flipping plate.
[0010] Preferably, a side protrusion is fixedly connected to the outer side wall of the sliding plate, a swing arm is rotatably connected to the side protrusion, a vertical plate is fixedly connected to the outer side wall of the top box, a lower pressure member is slidably connected to the vertical plate, the other end of the swing arm is rotatably connected to the outer side wall of the lower pressure member, a metal strip is fixedly connected to the bottom of the lower pressure member, and a positioning hole is provided on the lower pressure member.
[0011] Preferably, a bracket is fixedly connected to the outer wall of the upright plate, an insert rod is slidably connected to the bracket, a tension spring is sleeved on the insert rod, a roller is rotatably connected to the end of the insert rod, and a pull rod is fixedly connected to the end of the insert rod away from the roller, and the pull rod slides through to the outside of the tail box.
[0012] Preferably, a moving rod is fixedly connected to the outer wall of the moving plate, the moving rod slides through to the outside of the tail box, and a cleaning mechanism is provided on the moving rod.
[0013] Preferably, the cleaning mechanism includes a support arm fixedly connected to the moving rod, an installation component fixedly connected to the outer wall of the support arm, a scraper installed on the outer wall of the installation component, and air guide holes provided on the scraper.
[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting a self-checking lubrication mechanism, the present invention can automatically complete the detection of the bearing's operating status before use, quickly identify abnormal conditions such as bearing jamming, realize early fault prediction, effectively improve the safety and reliability of the device, and automatically add lubricating oil in a quantitative manner when abnormal bearing speed is detected, so as to repair minor jamming in time, prevent the fault from deteriorating further, and greatly extend the service life of the device. For organic damage that cannot be restored after lubrication, mechanical locking and audible alarm are implemented to intuitively prompt operators to repair in time.
[0015] 2. Through the cleaning mechanism, this invention can simultaneously drive the scraper to automatically scrape and clean the surface of the temperature sensor during the self-test process, effectively removing dust and oil adhering to the sensor surface, avoiding contaminants from affecting the temperature detection accuracy and response speed, ensuring long-term stability of wind speed and temperature detection, and guaranteeing the detection effect of the intelligent sensor. Attached Figure Description
[0016] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the rear structure of the present invention; Figure 3 is a schematic diagram of a partial structure of the present invention; Figure 4 is a schematic diagram of the internal structure of the tail box of the present invention; Figure 5 is an enlarged view of A in Figure 4; Figure 6 is a schematic diagram of the turntable structure of the present invention; Figure 7 is a schematic diagram of the turntable structure of the present invention; Figure 8 is a schematic diagram of the internal structure of the tail box of the present invention; Figure 9 is an enlarged view of B in Figure 8; Figure 10 is an enlarged view of C in Figure 8; Figure 11 is a schematic diagram of a partial structure of the present invention; Figure 12 is a schematic diagram of the planar structure of the top box of the present invention.
[0017] The components represented by each number in the attached diagram are listed below: 1. Main body of the device; 2. Fan; 3. Oil tank; 4. Tail box; 5. Top pipe; 6. Bearing; 7. Tail rod; 8. Electric telescopic rod; 9. Driven component; 10. Liquid inlet pipe; 11. Motor; 12. Transmission gear; 13. Driven gear; 14. Top box; 15. Push rod; 16. Crossbar; 17. Wedge; 18. Slide tube; 19. Pressing spring; 20. Through hole; 21. Flipping plate; 22. Blocking plate; 23. Support plate; 24. Collar; 25. Turntable; 26. Track; 27. Shielding cover; 28. Return spring; 29. Trigger magnet; 30. Base cover; 31. Side plate; 32. Torsion spring flap; 33. Upper magnetic strip; 34. Lower magnetic strip; 35. Striking rod; 36. Side protrusion; 37. Vertical plate; 38. Swing arm; 39. Lower pressing part; 40. Positioning hole; 41. Metal strip; 42. Pull rod; 43. Tension spring; 44. Insert rod; 45. Roller; 46. Support arm; 47. Temperature monitoring sensor; 48. Mounting part; 49. Scraper; 50. Air guide hole; 51. Moving rod; 52. Return spring; 53. Friction ring; 54. Moving plate; 55. Air duct. Detailed Implementation
[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] Example 1: Please refer to Figures 1-12. A portable fire-fighting airflow detection device includes a main body 1. An intelligent speed detection sensor is installed inside the main body 1. An air duct 55 is opened inside the main body 1, and a fan 2 is rotatably connected inside the air duct 55. A tail box 4 is fixedly connected to the outer wall of the main body 1. A temperature monitoring sensor 47 is fixedly connected to the outer wall of the tail box 4. A bearing 6 is installed on the tail box 4. The tail of the fan 2 is rotatably connected to the bearing 6. A tail rod 7 is fixedly connected to the outer wall of the fan 2. A striking rod 35 is fixedly connected to the tail of the tail rod 7. The tail box 4 contains... The device is equipped with a self-checking lubrication mechanism, which includes an electric telescopic rod 8 fixedly connected inside the tail box 4. A drive component 9 is fixedly connected to the end of the electric telescopic rod 8. A support plate 23 is fixedly connected to the outer wall of the drive component 9. A collar 24 is fixedly connected to the end of the support plate 23. A turntable 25 is rotatably connected to the collar 24. Multiple tracks 26 are provided on the turntable 25. A trigger magnet 29 is slidably connected inside each of the multiple tracks 26. A return spring 28 is fixedly connected to the outer wall of the trigger magnet 29. The end of the return spring 28 away from the trigger magnet 29 is fixedly connected to the inner wall of the track 26.
[0020] A shield 27 is provided in the middle of the multiple tracks 26, and a bottom cover 30 is provided at the bottom. A torsion spring flap 32 is installed inside the turntable 25. A side plate 31 corresponding to the torsion spring flap 32 is fixedly connected to the outer wall of the tail rod 7. A driven gear 13 is fixedly sleeved on the outer wall of the tail rod 7. A motor 11 is fixedly connected to the outer wall of the drive component 9. A transmission gear 12 is fixedly connected to the output end of the motor 11. The transmission gear 12 and the driven gear 13 are meshed.
[0021] The top box 14 is fixedly connected to the inside of the tail box 4. The sliding plate 54 is slidably connected to the inside of the top box 14. An upper magnetic strip 33 is fixedly connected to the outer wall of the sliding plate 54. A lower magnetic strip 34 is provided below the upper magnetic strip 33. The magnetic poles of the upper magnetic strip 33 and the lower magnetic strip 34 are the same as those of the trigger magnet 29.
[0022] A return spring 52 is fixedly connected to the outer wall of the sliding plate 54. The end of the return spring 52 away from the sliding plate 54 is fixedly connected to the inner wall of the top box 14. A push rod 15 is fixedly connected to the side of the sliding plate 54 away from the return spring 52. A friction ring 53 is fixedly connected inside the top box 14. The push rod 15 passes through the friction ring 53 and extends to the outside of the top box 14. The outer wall of the push rod 15 and the contact end of the friction ring 53 are both made of frosted material. A horizontal bar 16 is fixedly connected to the end of the push rod 15. A wedge 17 is fixedly connected to the outer wall of the horizontal bar 16.
[0023] An oil storage tank 3 is fixedly connected to the outer wall of the main body 1 of the device. A top pipe 5 is connected to the oil storage tank 3. The end of the top pipe 5 away from the oil storage tank 3 extends into the interior of the tail box 4. An inlet pipe 10 is connected to the bearing 6. A sliding pipe 18 is slidably connected between the inlet pipe 10 and the top pipe 5. The end of the sliding pipe 18 inside the top pipe 5 is sealed. A through hole 20 is opened on the sliding pipe 18. A pressing spring 19 is sleeved on the outer wall of the sliding pipe 18. A flip plate 21 is rotatably connected to the side wall of the sliding pipe 18. A blocking plate 22 is fixedly connected to the side wall of the sliding pipe 18. The blocking plate 22 is in contact with the flip plate 21.
[0024] A side protrusion 36 is fixedly connected to the outer wall of the sliding plate 54, and a swing arm 38 is rotatably connected to the side protrusion 36. A vertical plate 37 is fixedly connected to the outer wall of the top box 14, and a lower pressure member 39 is slidably connected to the vertical plate 37. The other end of the swing arm 38 is rotatably connected to the outer wall of the lower pressure member 39. A metal strip 41 is fixedly connected to the bottom of the lower pressure member 39, and a positioning hole 40 is provided on the lower pressure member 39.
[0025] A bracket is fixedly connected to the outer wall of the upright plate 37. A rod 44 is slidably connected to the bracket. A tension spring 43 is sleeved on the rod 44. A roller 45 is rotatably connected to the end of the rod 44. A pull rod 42 is fixedly connected to the end of the rod 44 away from the roller 45. The pull rod 42 slides through to the outside of the tail box 4.
[0026] A moving rod 51 is fixedly connected to the outer wall of the moving plate 54. The moving rod 51 slides through to the outside of the tail box 4 and is equipped with a cleaning mechanism.
[0027] In this embodiment, a self-test can be performed on the main body 1 of the device before use. When the self-test is started, the electric telescopic rod 8 is extended. The electric telescopic rod 8 pushes the motor 11 to move as a whole through the drive component 9 until the transmission gear 12 moves directly below the driven gear 13 to achieve meshing transmission. At the same time as the drive component 9 drives the transmission gear 12 into position, the turntable 25 moves synchronously, so that the side plate 31 extends into the turntable 25. Then the motor 11 is started, and the motor 11 drives the transmission gear 12 to rotate. The transmission gear 12 drives the tail rod 7 to rotate through the driven gear 13. When the tail rod 7 rotates, it drives the side plate 31 to rotate synchronously. The side plate 31 abuts against the side of the torsion spring flap 32, thereby driving the turntable 25 to rotate synchronously with the tail rod 7. The tail rod 7 is connected to the fan 2, which is mounted on the bearing 6. When the bearing 6 becomes stuck due to rust or dust intrusion, under the constant torque output of the motor 11, the speed of the fan 2 and the tail rod 7 decreases, and the speed of the turntable 25 decreases synchronously. The centrifugal force generated by the turntable 25 at low speed decreases, and the trigger magnet 29 overcomes the elastic force of the return spring 28 and slides along the track 26 to the middle and lower side, causing the trigger magnet 29 to move. Magnet 29 is located directly to the side of the lower magnetic strip 34, bringing them close together. Since the trigger magnet 29 and the lower magnetic strip 34 have the same magnetic poles, they generate a repulsive magnetic force when they approach each other. Under the action of this magnetic repulsion, the moving plate 54 is pushed to overcome the elastic force of the return spring 52 and move away from the turntable 25. The moving plate 54 drives the push rod 15 to move synchronously. The outer wall of the push rod 15 and the contact end with the friction ring 53 are both made of frosted material. Under the action of frictional damping, the push rod 15 slowly moves away from the turntable 25. As the push rod 15 moves slowly, it drives the wedge through the crossbar 16. The wedge 17 moves synchronously. During the movement of the wedge 17, it will contact and lift the flip plate 21. The flip plate 21 is connected to the slide tube 18, which in turn drives the slide tube 18 to move upward synchronously, so that the through hole 20 on the slide tube 18 enters the interior of the top tube 5. At this time, the lubricating oil in the oil tank 3 will enter the interior of the slide tube 18 through the top tube 5 and the through hole 20, and then enter the inlet pipe 10 through the slide tube 18. Finally, it will be transported to the bearing 6 through the inlet pipe 10 to realize the automatic lubrication of the bearing 6. During this process, the tail rod 7 continuously drives the turntable 25 to rotate.
[0028] After lubrication, bearing 6 has two working states. If internal damage occurs to bearing 6, the jamming fault cannot be eliminated after lubrication, and tail rod 7 will still maintain a low-speed abnormal state. The trigger magnet 29 will continuously align with the lower magnetic strip 34 to generate a repulsive magnetic force. Under the continuous magnetic repulsion, the moving plate 54 will continue to move away from the turntable 25. During the movement, the moving plate 54 will push the lower pressing component 39 downward through the swing arm 38. When the moving plate 54 moves to its maximum stroke, the swing arm 38 will push the lower pressing component 39 to its maximum downward stroke, so that the metal strip 41 is exposed outside the vertical plate 37. After 39 moves to its limit, the positioning hole 40 moves to the side of the insertion rod 44. The tension of the tension spring 43 drives the insertion rod 44 to insert into the positioning hole 40, thereby limiting and locking the pressing part 39. After the pressing part 39 is locked, the sliding plate 54 is locked by the cooperation of the swing arm 38 and the side protrusion 36, which restricts the sliding plate 54 from resetting. After the metal strip 41 is exposed, it is located on the rotation path of the striking rod 35. The tail rod 7 drives the tail striking rod 35 to rotate continuously. The striking rod 35 and the metal strip 41 repeatedly hit each other and emit a warning sound, indicating to the operator that the bearing 6 has suffered organic structural damage and needs to be repaired and maintained in time.
[0029] If the bearing 6 jamming fault is eliminated after lubrication, the tail rod 7 and turntable 25 will return to normal speed under the constant torque output of motor 11. After the turntable 25 speed increases, the centrifugal force generated increases, triggering magnet 29 overcomes the elastic force of return spring 28 and slides to the middle part of track 26, and is completely covered by shield 27. Triggering magnet 29 moves away from lower magnetic strip 34, and the repulsive magnetic force between the two disappears. Push rod 15 is reset under the elastic force of return spring 52. Push rod 15 drives wedge 17 to move synchronously to reset through crossbar 16. During the reset process of wedge 17, the tail plane contacts the flip plate 21 and pushes the flip plate 21 to flip sideways. Wedge 17 no longer lifts flip plate 21, slide tube 18 has no displacement, and no lubricating oil is delivered to inlet pipe 10 during the reset process. After push rod 15 is reset, motor 11 is turned off to stop power output, and electric telescopic rod 8 is controlled to retract. Through drive component 9, transmission gear 12 is driven away from driven gear 13, and normal wind measurement working state can be entered.
[0030] During the self-test, if the bearing 6 is in normal condition, the fan 2 and tail rod 7 rotate at normal speeds, and the trigger magnet 29 slides down to the middle of the track 26 under the action of centrifugal force and is covered by the shield 27, it does not generate a repulsive magnetic force with the lower magnetic strip 34, and no lubrication action is performed.
[0031] Example 2: Please refer to Figures 1-12. The cleaning mechanism includes a support arm 46 fixedly connected to the moving rod 51. An installation part 48 is fixedly connected to the outer wall of the support arm 46. A scraper 49 is installed on the outer wall of the installation part 48. An air guide hole 50 is opened on the scraper 49.
[0032] In this embodiment, regardless of whether the device is in a normal or abnormal state, the centrifugal force generated by the rotation of the turntable 25 will throw the trigger magnet 29 outward. In the abnormal state, the trigger magnet 29 slides to the lower side of the track 26, generating a continuous repulsive magnetic force, which pushes the moving plate 54 to move significantly. In the normal state, the trigger magnet 29 slides to the middle part of the track 26. During the sliding process, it briefly aligns with the lower magnetic strip 34, generating an instantaneous repulsive magnetic force. Under the action of the instantaneous repulsive magnetic force, affected by the damping effect of the push rod 15 and the friction ring 53, the moving plate 54 only moves a short distance. In summary, whether the moving plate 54 moves a large or short distance, it will push the moving rod 51 to move synchronously. The moving rod 51 drives the scraper 49 through the support arm 46 to scrape and clean the surface of the temperature monitoring sensor 47, removing dust and oil adhering to the surface of the temperature monitoring sensor 47 to avoid affecting the temperature measurement accuracy. After the self-test is completed, the motor 11 is turned off and controlled. Once the electric telescopic rod 8 is reset, the device can operate normally. In normal wind measurement mode, the air duct 55 is aligned with the air outlet to be measured. External airflow enters the air duct 55 and acts on the blade surface of the fan 2. The airflow generates thrust on the blades, driving the fan 2 to rotate continuously. The rotational speed of the fan 2 is positively correlated with the external airflow velocity, that is, the greater the wind speed, the greater the kinetic energy of the airflow on the fan 2 and the higher the rotational speed. The lower the wind speed, the lower the rotational speed of the fan 2. The intelligent speed detection sensor inside the main body 1 collects the rotational speed signal of the fan 2 in real time. According to the pre-calibrated curve of the relationship between speed and wind speed, the real-time detected speed signal is converted into the corresponding airflow velocity value, thereby realizing the real-time measurement of wind speed. After passing through the air duct 55, the airflow is blown to the temperature monitoring sensor 47 to complete the temperature detection, thus completing the intelligent sensor detection process (this is existing technology and will not be elaborated further).
[0033] It should be noted that when the moving plate 54 moves a short distance under the action of instantaneous repulsive magnetic force, the stroke is insufficient to make the wedge 17 contact the flip plate 21. Under abnormal conditions, the wedge 17 continues to move and lifts the flip plate 21. After being lifted, the wedge 17 continues to move and disengages from the flip plate 21. The slide tube 18 is reset under the elastic force of the pressing spring 19, and the through hole 20 moves out of the top tube 5, realizing the quantitative delivery of lubricating oil and avoiding continuous oil supply.
[0034] It should be noted that the self-test process of the whole machine takes 30 seconds. In the abnormal state, after the lubricating oil drips into the bearing 6 through the inlet pipe 10, it can complete the lubrication within 10 seconds and restore the speed of the fan 2. If the speed of the fan 2 does not return to normal after dripping oil for more than 30 seconds, the moving plate 54 moves to the maximum stroke and locks under the action of continuous magnetic repulsion, triggering a mechanical alarm to prompt maintenance. After maintenance is completed, the motor 11 is reset, and the pull rod 42 is pulled on the outside of the tail box 4 to make the insertion rod 44 disengage from the positioning hole 40. After the lock is released, the moving plate 54 and the lower pressing part 39 and other components are reset under the elastic force of the return spring 52.
[0035] It should be noted that the airflow is guided obliquely through the air guide hole 50 and then blown to the temperature monitoring sensor 47 to ensure the temperature detection effect. The scraper 49 can be replaced according to the usage requirements. When the side plate 31 extends into the turntable 25, if the end contacts the torsion spring flap 32, it can push the torsion spring flap 32 to flip and avoid it. After the tail rod 7 drives the side plate 31 to rotate, the side plate 31 disengages from the torsion spring flap 32 and moves to its side to abut. The torsion spring flap 32 automatically resets, realizing the transmission cooperation between the side plate 31 and the torsion spring flap 32, thereby driving the turntable 25 to rotate stably.
[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0037] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A portable fire-fighting airflow detection device, comprising a device body (1), characterized in that, The device body (1) is equipped with an intelligent speed detection sensor. An air duct (55) is opened inside the device body (1), and a fan (2) is rotatably connected inside the air duct (55). A tail box (4) is fixedly connected to the outer wall of the device body (1), and a temperature monitoring sensor (47) is fixedly connected to the outer wall of the tail box (4). A bearing (6) is installed on the tail box (4), and the tail of the fan (2) is rotatably connected to the bearing (6). A tail rod (7) is fixedly connected to the outer wall of the fan (2), and a striking rod (35) is fixedly connected to the tail of the tail rod (7). A self-checking lubrication mechanism is provided inside the tail box (4). The self-checking lubrication mechanism includes… The device includes an electric telescopic rod (8) fixedly connected inside the tail box (4). The end of the electric telescopic rod (8) is fixedly connected to a drive member (9). A support plate (23) is fixedly connected to the outer wall of the drive member (9). A collar (24) is fixedly connected to the end of the support plate (23). A turntable (25) is rotatably connected to the collar (24). Multiple tracks (26) are provided on the turntable (25). A trigger magnet (29) is slidably connected inside each of the multiple tracks (26). A return spring (28) is fixedly connected to the outer wall of the trigger magnet (29). The end of the return spring (28) away from the trigger magnet (29) is fixedly connected to the inner wall of the track (26).
2. The portable fire-fighting air volume detection device according to claim 1, characterized in that: A shield (27) is provided in the middle of the multiple tracks (26), and a bottom cover (30) is provided at the bottom. A torsion spring flap (32) is installed inside the turntable (25). A side plate (31) corresponding to the torsion spring flap (32) is fixedly connected to the outer wall of the tail rod (7). A driven gear (13) is fixedly sleeved on the outer wall of the tail rod (7). A motor (11) is fixedly connected to the outer wall of the drive member (9). A transmission gear (12) is fixedly connected to the output end of the motor (11). The transmission gear (12) meshes with the driven gear (13).
3. The portable fire-fighting air volume detection device according to claim 1, characterized in that: The tail box (4) is fixedly connected to the top box (14), and the top box (14) is slidably connected to the sliding plate (54). An upper magnetic strip (33) is fixedly connected to the outer wall of the sliding plate (54), and a lower magnetic strip (34) is provided below the upper magnetic strip (33). The magnetic poles of the upper magnetic strip (33) and the lower magnetic strip (34) are the same as those of the trigger magnet (29).
4. The portable fire-fighting air volume detection device according to claim 3, characterized in that: A return spring (52) is fixedly connected to the outer wall of the moving plate (54). The end of the return spring (52) away from the moving plate (54) is fixedly connected to the inner wall of the top box (14). A push rod (15) is fixedly connected to the side of the moving plate (54) away from the return spring (52). A friction ring (53) is fixedly connected inside the top box (14). The push rod (15) passes through the friction ring (53) and extends to the outside of the top box (14). The outer wall of the push rod (15) and the contact end of the friction ring (53) are both made of frosted material. A horizontal bar (16) is fixedly connected to the end of the push rod (15). A wedge (17) is fixedly connected to the outer wall of the horizontal bar (16).
5. A portable fire-fighting air volume detection device according to claim 1, characterized in that: An oil storage tank (3) is fixedly connected to the outer wall of the main body (1) of the device. A top pipe (5) is connected to the oil storage tank (3). The end of the top pipe (5) away from the oil storage tank (3) extends into the interior of the tail box (4). An inlet pipe (10) is connected to the bearing (6). A sliding pipe (18) is slidably connected between the inlet pipe (10) and the top pipe (5). The end of the sliding pipe (18) inside the top pipe (5) is sealed. A through hole (20) is opened on the sliding pipe (18). A pressing spring (19) is sleeved on the outer wall of the sliding pipe (18). A flip plate (21) is rotatably connected to the side wall of the sliding pipe (18). A blocking plate (22) is fixedly connected to the side wall of the sliding pipe (18). The blocking plate (22) is in contact with the flip plate (21).
6. A portable fire-fighting air volume detection device according to claim 3, characterized in that: A side protrusion (36) is fixedly connected to the outer wall of the sliding plate (54), and a swing arm (38) is rotatably connected to the side protrusion (36). A vertical plate (37) is fixedly connected to the outer wall of the top box (14), and a lower pressure member (39) is slidably connected to the vertical plate (37). The other end of the swing arm (38) is rotatably connected to the outer wall of the lower pressure member (39). A metal strip (41) is fixedly connected to the bottom of the lower pressure member (39), and a positioning hole (40) is provided on the lower pressure member (39).
7. A portable fire-fighting air volume detection device according to claim 6, characterized in that: A bracket is fixedly connected to the outer wall of the upright plate (37), and a rod (44) is slidably connected to the bracket. A tension spring (43) is sleeved on the rod (44), and a roller (45) is rotatably connected to the end of the rod (44). A pull rod (42) is fixedly connected to the end of the rod (44) away from the roller (45), and the pull rod (42) slides through to the outside of the tail box (4).
8. A portable fire-fighting air volume detection device according to claim 3, characterized in that: A moving rod (51) is fixedly connected to the outer wall of the moving plate (54). The moving rod (51) slides through to the outside of the tail box (4). A cleaning mechanism is provided on the moving rod (51).
9. A portable fire-fighting air volume detection device according to claim 8, characterized in that: The cleaning mechanism includes a support arm (46) fixedly connected to the moving rod (51), an installation part (48) fixedly connected to the outer wall of the support arm (46), a scraper (49) installed on the outer wall of the installation part (48), and an air guide hole (50) opened on the scraper (49).