A fire detector for use in a fan

Abstract

The utility model discloses a kind of fire detectors used by fan, it is related to fire-fighting device technical field, including air duct, fixedly connected with fixed block on air duct, fixed block is opened with air inlet and mounting groove in, the inside rotatable mounting of mounting groove has shaft and eddy current fan, the lower end of fixed block is fixedly connected with positioning frame, positioning frame is provided with detector housing, detector housing is provided with lifting cylinder, first lifting assembly and second lifting assembly, the upper end of lifting cylinder is rotatably installed with rotating block, the lower end of shaft is provided with the connecting piece of being mutually clamped with rotating block, by first lifting assembly, the position of lifting cylinder is adjusted and fixed, so that shaft is inserted into rotating block, and rotating is driven by eddy current fan, so that clamping block is inserted into slot, rotating block and fixed rod drive fan blade and cleaning brush rotation, without motor, effectively reduce the maintenance frequency of fire detector, and can quickly disassemble detector, convenient maintenance.

Description

Technical Field

[0001] This utility model relates to the field of fire protection device technology, specifically to a fire detector used in fans. Background Technology

[0002] A fire detector is a device used to detect fires. There are many types, among which the aspirating smoke detector is an automatic fire alarm device that uses an air sampling tube to draw air from a protected area into the detector for analysis, thereby providing early warning of fires. It is commonly used in areas with high-speed airflow and in places inaccessible to personnel, actively detecting sampled air to provide early warning before a fire has fully developed.

[0003] In existing commercial buildings, subway tunnels, data centers, and other structures, ventilation fans are typically responsible for air circulation. In the event of a fire, the ducts can become channels for the spread of smoke and flames. To ensure safety, fire detectors are usually installed at the inlet and outlet of the fans and inside the ducts to monitor fire signals in abnormal airflow. Traditional fire detectors contain motors, and after a period of use, when the motor or internal parts of the detector malfunction, they need to be replaced. Fire detectors are usually fixed with bolts, making subsequent maintenance and repairs cumbersome. Therefore, this solution provides a fire detector for use with ventilation fans to address the aforementioned problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, a fire detector for use in fans is provided. This technical solution solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A fire detector for use with a fan includes an air duct. A fixing block is fixedly connected to the inner wall of the air duct. An air inlet and a mounting groove are interconnected inside the fixing block. A guide plate is provided at the inlet of the air inlet. A rotating shaft is rotatably installed inside the mounting groove. A vortex fan is fixedly installed on the rotating shaft. A positioning frame is fixedly connected to the lower end of the fixing block. A detector housing is slidably connected to the inner side of the positioning frame. The lower end of the mounting groove is connected to the detector housing. A fixing component for fixing is provided inside the detector housing. A slidable lifting cylinder is provided inside the detector housing. A first lifting component and a second lifting component for driving the lifting cylinder to rise and fall are provided on the inner wall of the detector housing. A rotating block is rotatably installed at the upper end of the lifting cylinder. A connecting component that engages with the rotating block is provided at the lower end of the rotating shaft. The connecting component includes a locking shaft fixedly connected to the rotating shaft. A receiving groove is provided on the inner wall of the locking shaft. A locking block is slidably connected inside the receiving groove. A spring is fixedly connected between the locking block and the receiving groove. Two sets of locking slots for engaging the locking block are provided on the rotating block.

[0007] Preferably, the first lifting assembly and the second lifting assembly have identical structures and are symmetrically arranged about the lifting cylinder.

[0008] Preferably, the first lifting assembly includes a pressure rod slidably mounted on the inner wall of the detector housing. A pressure plate is fixedly connected to the outer end of the pressure rod, and a telescopic rod II is fixedly connected to the lower side of the inner end of the pressure rod. A lower plate is fixedly connected to the lower end of the telescopic rod II. A spring III sleeved on the telescopic rod II is fixedly connected between the lower plate and the pressure rod. A spherical insert rod is fixedly mounted on the lower plate on one side of the telescopic rod II. A traveling frame is fixedly mounted on the lifting cylinder on the upper side of the spherical insert rod. A drive groove is provided on the traveling frame. A drive rod is slidably connected inside the drive groove. The drive rod is fixedly connected to the pressure rod. A spherical slot for engaging with the spherical insert rod is provided at the bottom of the traveling frame.

[0009] Preferably, a limiting plate is fixedly connected to the pressure rod, and a sliding rod is slidably connected to one end of the limiting plate. The two ends of the sliding rod are fixedly connected to the inner walls of both sides of the detector housing, respectively.

[0010] Preferably, the fixing component includes a vertical plate fixedly connected to the detector housing, with a telescopic rod fixedly connected to both ends of the vertical plate, a limit block fixedly connected to the end of the telescopic rod away from the vertical plate, and a spring sleeved on the telescopic rod fixedly connected between both ends of the vertical plate and the limit block.

[0011] Preferably, a base plate is fixedly connected to the bottom of the detector housing, a filter screen is fixedly installed on the base plate, a fixed rod is slidably installed on the upper side of the filter screen at the lower end of the lifting cylinder, a cleaning component is fixedly connected to the lower end of the fixed rod, a fan blade is fixedly installed in the middle of the fixed rod, a limit ring is fixedly connected to the inner wall of the lifting cylinder, a fixed plate is fixedly connected to the upper end of the fixed rod, and a rectangular telescopic rod is fixedly connected between the fixed plate and the rotating block.

[0012] Preferably, the cleaning component includes a cleaning brush fixedly installed at the lower end of the fixed rod, with rollers rotatably installed on both sides of the cleaning brush, and a limiting frame fixedly installed on the base plate on the outer side of the rollers, with a limiting groove for cooperating with the rollers.

[0013] Compared with the prior art, this utility model proposes a fire detector for use in fans, which has the following advantages:

[0014] 1. This utility model includes a first lifting assembly and a second lifting assembly. By pressing the pressure plate in the first lifting assembly, the pressure plate drives the drive rod via the pressure rod, causing the drive rod to slide in the drive groove of the traveling frame. This allows the drive rod to drive the traveling frame upwards, thereby moving the lifting cylinder and the rotating block upwards until the rotating block engages with the rotating shaft. Simultaneously, after the drive rod has moved into position within the drive groove, the spherical insert is inserted into the spherical slot. With the assistance of the spring, the spherical insert is held in place without significant external force. It can be stably locked into the spherical slot, thereby fixing the position of the lifting cylinder. The lower part of the rotating shaft is initially inserted into the slot of the rotating block. With the airflow and the vortex fan, the vortex fan drives the rotating shaft to rotate. During the rotation of the shaft, the centrifugal force causes the locking block to move out of the storage slot until the locking block is inserted into the slot, driving the rotating block to rotate. The rotating block then drives the fixed rod to rotate through the rectangular telescopic rod, thereby driving the fan blades and cleaning brush to rotate. No motor is required, which can effectively reduce the maintenance frequency of the fire detector.

[0015] 2. In this utility model, when disassembling the detector, simply block the guide plate to prevent airflow from entering the air inlet. At this time, the vortex fan stops because there is no wind to drive it. Then, under the action of spring two, the locking block retracts into the storage groove, thereby releasing the fixation between the rotating shaft and the rotating block. By pulling the pressure plate, the lifting cylinder can be quickly reset. Then, by pressing the limiting blocks on both sides of the fixing component, the limiting blocks are retracted into the inside of the detector housing, thereby releasing the fixation between the detector housing and the positioning frame. This allows for quick disassembly of the detector, facilitating subsequent maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the fixing block in this utility model;

[0018] Figure 3 This is a schematic diagram of the connecting component in this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the detector housing in this utility model;

[0020] Figure 5 This is a schematic diagram of the lifting cylinder in this utility model;

[0021] Figure 6 This is a schematic diagram of the cleaning component in this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the first lifting component in this utility model;

[0023] Figure 8 This is a schematic diagram of the walking frame in this utility model.

[0024] The numbers on the map are:

[0025] 1. Air duct; 2. Fixing block; 201. Air inlet; 202. Guide plate; 203. Mounting slot; 3. Positioning frame; 4. Detector housing; 401. Base plate; 402. Filter screen; 5. Fixing component; 501. Vertical plate; 502. Telescopic rod one; 503. Spring one; 504. Limiting block; 6. Rotating shaft; 601. Snap-fit ​​shaft; 602. Storage slot; 603. Snap-fit ​​block; 604. Spring two; 7. Vortex fan; 8. Lifting cylinder; 801. Limiting ring; 9. Rotating block; 901. Snap-fit ​​slot; 10. Fixing rod; 10 01. Fixed plate; 11. Fan blade; 12. Rectangular telescopic rod; 13. Cleaning brush; 1301. Roller; 1302. Limiting frame; 1303. Limiting groove; 14. First lifting assembly; 1401. Pressure rod; 1402. Pressure plate; 1403. Telescopic rod two; 1404. Lower plate; 1405. Spring three; 1406. Drive rod; 1407. Spherical insertion rod; 1408. Walking frame; 1409. Limiting plate; 1410. Drive groove; 1411. Spherical slot; 1412. Slide rod; 15. Second lifting assembly. Detailed Implementation

[0026] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0027] Reference Figure 1-5As shown, a fire detector used with a fan includes a duct 1. A fixing block 2 is fixedly connected to the inner wall of the duct 1. The fixing block 2 has an interconnected air inlet 201 and a mounting groove 203 inside. A guide plate 202 is provided at the inlet of the air inlet 201. A rotating shaft 6 is rotatably installed inside the mounting groove 203. A vortex fan 7 is fixedly installed on the rotating shaft 6. A positioning frame 3 is fixedly connected to the lower end of the fixing block 2. A detector housing 4 is slidably connected to the inner side of the positioning frame 3. The lower end of the mounting groove 203 is connected to the detector housing 4. A fixing member 5 for fixing is provided inside the detector housing 4. A sliding lifting cylinder 8 is provided. The inner wall of the detector housing 4 is provided with a first lifting component 14 and a second lifting component 15 for driving the lifting cylinder 8 to rise and fall. A rotating block 9 is rotatably installed at the upper end of the lifting cylinder 8. A connecting piece is provided at the lower end of the rotating shaft 6 to engage with the rotating block 9. The connecting piece includes a snap-fit ​​shaft 601 fixedly connected to the rotating shaft 6. A storage groove 602 is provided on the inner wall of the snap-fit ​​shaft 601. A snap-fit ​​block 603 is slidably connected inside the storage groove 602. A spring 604 is fixedly connected between the snap-fit ​​block 603 and the storage groove 602. Two sets of slots 901 are provided on the rotating block 9 to engage with the snap-fit ​​block 603.

[0028] Furthermore: the first lifting assembly 14 and the second lifting assembly 15 drive the lifting cylinder 8 to move upward, thereby driving the rotating block 9 to move upward, so that the lower end of the rotating shaft 6 is inserted into the rotating block 9. With the airflow and the vortex fan 7, the vortex fan 7 drives the rotating shaft 6 to rotate. During the rotation of the rotating shaft 6, the centrifugal force causes the locking block 603 to move out of the storage slot 602 until the locking block is inserted into the slot 901, and drives the rotating block 9 to rotate. The rotating block 9 then drives the fixed rod 10 to rotate through the rectangular telescopic rod 12, thereby driving the fan blade 11 and the cleaning brush 13 to rotate. No motor is required, which can effectively reduce the maintenance frequency of the fire detector.

[0029] Specifically, in this embodiment, the first lifting component 14 and the second lifting component 15 have the same structure and are symmetrically arranged about the lifting cylinder 8.

[0030] Specifically, in this embodiment, the first lifting assembly 14 includes a pressure rod 1401 slidably mounted on the inner wall of the detector housing 4. A pressure plate 1402 is fixedly connected to the outer end of the pressure rod 1401, and a telescopic rod 1403 is fixedly connected to the lower side of the inner end of the pressure rod 1401. A lower plate 1404 is fixedly connected to the lower end of the telescopic rod 1403, and a spring 1405 sleeved on the telescopic rod 1403 is fixedly connected between the lower plate 1404 and the pressure rod 1401. A spherical insert rod 1407 is fixedly installed on the lower plate 1404 on one side of 03. A traveling frame 1408 is fixedly installed on the upper side of the spherical insert rod 1407 and is fixedly installed on the lifting cylinder 8. A drive groove 1410 is provided on the traveling frame 1408. A drive rod 1406 is slidably connected inside the drive groove 1410. The drive rod 1406 is fixedly connected to the pressure rod 1401. A spherical slot 1411 is provided at the bottom of the traveling frame 1408 for engaging with the spherical insert rod 1407.

[0031] Specifically, in this embodiment, a limiting plate 1409 is fixedly connected to the pressure rod 1401, and a sliding rod 1412 is slidably connected to one end of the limiting plate 1409. The two ends of the sliding rod 1412 are fixedly connected to the inner walls of both sides of the detector housing 4, respectively.

[0032] Furthermore: By pressing the pressure plate 1402 in the first lifting assembly 14, the pressure plate 1402 drives the drive rod 1406 via the pressure rod 1401, causing the drive rod 1406 to slide in the drive groove 1410 of the traveling frame 1408. This allows the drive rod 1406 to drive the traveling frame 1408 to move upward, thereby causing the lifting cylinder 8 and the rotating block 9 to move upward until the rotating block 9 engages with the rotating shaft 6. Simultaneously, after the drive rod 1406 moves into position inside the drive groove 1410, the spherical insert rod 1407 is inserted into the spherical... In slot 1411, and with the help of spring 1405, the spherical insert 1407 can be stably engaged in the spherical slot 1411 without being pulled by a large external force, thereby fixing the position of the lifting cylinder 8. When disassembling the detector, simply block the guide plate 202 to prevent the airflow from entering the air inlet 201. At this time, the vortex fan 7 stops because there is no air to drive it. Then, under the action of spring 604, the locking block 603 retracts into the storage groove 602, thereby releasing the fixation between the rotating shaft 6 and the rotating block 9.

[0033] Specifically, in this embodiment, the fixing member 5 includes a vertical plate 501 fixedly connected to the detector housing 4. Both ends of the vertical plate 501 are fixedly connected to a telescopic rod 502. The end of the telescopic rod 502 away from the vertical plate 501 is fixedly connected to a limiting block 504. Both ends of the vertical plate 501 and the limiting block 504 are respectively fixedly connected to a spring 503 sleeved on the telescopic rod 502.

[0034] Furthermore: by pressing the limiting blocks 504 on both sides of the fixing member 5, the limiting blocks 504 are retracted into the inside of the detector housing 4, thereby releasing the fixing between the detector housing 4 and the positioning frame 3, so that the detector can be quickly disassembled and convenient for subsequent maintenance.

[0035] Specifically, in this embodiment, a base plate 401 is fixedly connected to the bottom of the detector housing 4, a filter screen 402 is fixedly installed on the base plate 401, a fixed rod 10 is slidably installed on the upper side of the filter screen 402 at the lower end of the lifting cylinder 8, a cleaning component is fixedly connected to the lower end of the fixed rod 10, a fan blade 11 is fixedly installed in the middle of the fixed rod 10, a limit ring 801 is fixedly connected to the inner wall of the lifting cylinder 8, a fixed plate 1001 is fixedly connected to the upper end of the fixed rod 10, and a rectangular telescopic rod 12 is fixedly connected between the fixed plate 1001 and the rotating block 9.

[0036] Specifically, in this embodiment, the cleaning component includes a cleaning brush 13 fixedly installed at the lower end of the fixed rod 10. Rollers 1301 are rotatably installed on both sides of the cleaning brush 13. A limiting frame 1302 fixedly installed on the base plate 401 is provided on the outer side of the rollers 1301. A limiting groove 1303 for cooperating with the rollers 1301 is provided on the limiting frame 1302.

[0037] Furthermore: With the airflow cooperating with the vortex fan 7, the vortex fan 7 drives the rotating shaft 6 to rotate. During the rotation of the rotating shaft 6, the centrifugal force causes the locking block 603 to move out of the storage slot 602 until the locking block is inserted into the slot 901, which in turn drives the rotating block 9 to rotate. The rotating block 9 then drives the fixed rod 10 to rotate through the rectangular telescopic rod 12, thereby driving the fan blade 11 and the cleaning brush 13 to rotate. No motor is required, which can effectively reduce the maintenance frequency of the fire detector.

[0038] The working principle of this utility model is as follows: the first lifting assembly 14 and the second lifting assembly 15 drive the lifting cylinder 8 to move upward. By pressing the pressure plate 1402 in the first lifting assembly 14, the pressure plate 1402 drives the drive rod 1406 through the pressure rod 1401, causing the drive rod 1406 to slide in the drive groove 1410 of the walking frame 1408. This allows the drive rod 1406 to drive the walking frame 1408 to move upward, thereby driving the lifting cylinder 8 and the rotating block 9 to move upward until the rotating block 9 and the rotating shaft 6 are engaged. At the same time, when the drive rod 1406 moves into place inside the drive groove 1410, the spherical insert 1407 is inserted into the spherical slot 1411. With the help of the spring 1405, the spherical insert 1407 can be stably engaged in the spherical slot 1411 without being pulled by a large external force, thus fixing the position of the lifting cylinder 8. The working principle of the second lifting assembly 15 is the same as that of the first lifting assembly 14, and will not be described again here.

[0039] By moving the lifting cylinder 8 upward, the rotating block 9 is moved upward, allowing the lower end of the rotating shaft 6 to be inserted into the rotating block 9. With the airflow and the vortex fan 7, the vortex fan 7 drives the rotating shaft 6 to rotate. During the rotation of the rotating shaft 6, the centrifugal force causes the locking block 603 to move out of the storage slot 602 until the locking block is inserted into the slot 901, which in turn drives the rotating block 9 to rotate. The rotating block 9 then drives the fixed rod 10 to rotate through the rectangular telescopic rod 12, thereby driving the fan blade 11 and the cleaning brush 13 to rotate. No motor is required, which can effectively reduce the maintenance frequency of the fire detector.

[0040] When disassembling the detector, simply block the guide plate 202 to prevent airflow from entering the air inlet 201. At this time, the vortex fan 7 stops because there is no air to drive it. Then, under the action of the spring 604, the locking block 603 retracts into the storage groove 602, thereby releasing the fixation between the rotating shaft 6 and the rotating block 9. Then, by pulling the pressure plate 1402, the lifting cylinder 8 can be quickly reset. Then, by pressing the limiting blocks 504 on both sides of the fixing part 5, the limiting blocks 504 are retracted into the inside of the detector housing 4, thereby releasing the fixation between the detector housing 4 and the positioning frame 3. This allows for quick disassembly of the detector and facilitates subsequent maintenance.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fire detector used in a fan, characterized in that, The device includes an air duct (1), with a fixing block (2) fixedly connected to the inner wall of the air duct (1). The fixing block (2) has an interconnected air inlet (201) and a mounting groove (203) inside. A guide plate (202) is provided at the inlet of the air inlet (201). A rotating shaft (6) is rotatably mounted inside the mounting groove (203), and a vortex fan (7) is fixedly mounted on the rotating shaft (6). A positioning frame (3) is fixedly connected to the lower end of the fixing block (2). A detector housing (4) is slidably connected to the inner side of the positioning frame (3). The lower end of the mounting groove (203) is connected to the detector housing (4). A fixing component (5) for fixing is provided inside the detector housing (4). A slidable... The inner wall of the detector housing (4) is provided with a first lifting component (14) and a second lifting component (15) for driving the lifting cylinder (8) to rise and fall. A rotating block (9) is rotatably installed at the upper end of the lifting cylinder (8). A connecting piece that is engaged with the rotating block (9) is provided at the lower end of the rotating shaft (6). The connecting piece includes a snap-fit ​​shaft (601) fixedly connected to the rotating shaft (6). A storage groove (602) is provided on the inner wall of the snap-fit ​​shaft (601). A snap-fit ​​block (603) is slidably connected inside the storage groove (602). A spring (604) is fixedly connected between the snap-fit ​​block (603) and the storage groove (602). Two sets of slots (901) for engaging the snap-fit ​​block (603) are provided on the rotating block (9).

2. A fire detector for use in a fan according to claim 1, characterized in that: The first lifting assembly (14) and the second lifting assembly (15) have the same structure and are symmetrically arranged about the lifting cylinder (8).

3. A fire detector for use in a fan according to claim 1, characterized in that: The first lifting assembly (14) includes a pressure rod (1401) slidably mounted on the inner wall of the detector housing (4). A pressure plate (1402) is fixedly connected to the outer end of the pressure rod (1401). A telescopic rod two (1403) is fixedly connected to the lower side of the inner end of the pressure rod (1401). A lower plate (1404) is fixedly connected to the lower end of the telescopic rod two (1403). A spring three (1405) sleeved on the telescopic rod two (1403) is fixedly connected between the lower plate (1404) and the pressure rod (1401). One of the telescopic rod two (1403) A spherical insert rod (1407) is fixedly installed on the lower plate (1404) on the side. A traveling frame (1408) is fixedly installed on the lifting cylinder (8) on the upper side of the spherical insert rod (1407). A drive groove (1410) is opened on the traveling frame (1408). A drive rod (1406) is slidably connected inside the drive groove (1410). The drive rod (1406) is fixedly connected to the pressure rod (1401). A spherical slot (1411) for engaging with the spherical insert rod (1407) is opened at the bottom of the traveling frame (1408).

4. A fire detector for use in a fan according to claim 3, characterized in that: A limiting plate (1409) is fixedly connected to the pressure rod (1401). A sliding rod (1412) is slidably connected to one end of the limiting plate (1409). The two ends of the sliding rod (1412) are fixedly connected to the inner walls of the detector housing (4) on both sides respectively.

5. A fire detector for use in a fan according to claim 1, characterized in that: The fixing component (5) includes a vertical plate (501) fixedly connected to the detector housing (4). Both ends of the vertical plate (501) are fixedly connected to a telescopic rod (502). The end of the telescopic rod (502) away from the vertical plate (501) is fixedly connected to a limiting block (504). Both ends of the vertical plate (501) and the limiting block (504) are respectively fixedly connected to a spring (503) sleeved on the telescopic rod (502).

6. A fire detector for use in a fan according to claim 1, characterized in that: The bottom of the detector housing (4) is fixedly connected to a base plate (401), and a filter screen (402) is fixedly installed on the base plate (401). A fixed rod (10) is slidably installed on the upper side of the filter screen (402) at the lower end of the lifting cylinder (8). A cleaning component is fixedly connected to the lower end of the fixed rod (10), and a fan blade (11) is fixedly installed in the middle of the fixed rod (10). A limit ring (801) is fixedly connected to the inner wall of the lifting cylinder (8), and a fixed plate (1001) is fixedly connected to the upper end of the fixed rod (10). A rectangular telescopic rod (12) is fixedly connected between the fixed plate (1001) and the rotating block (9).

7. A fire detector for use in a fan according to claim 6, characterized in that: The cleaning component includes a cleaning brush (13) fixedly installed at the lower end of the fixed rod (10). Rollers (1301) are rotatably installed on both sides of the cleaning brush (13). A limiting frame (1302) fixedly installed on the base plate (401) is provided on the outer side of the roller (1301). A limiting groove (1303) for cooperating with the roller (1301) is provided on the limiting frame (1302).

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