Equipment for detecting operation condition of smoke exhaust fan

Abstract

The utility model discloses operation state detection equipment of a smoke exhaust fan, which relates to the technical field of detection equipment and comprises a sleeve, the inner surface of the sleeve is connected with a telescopic rod in a sliding manner, the inner surface of the sleeve is provided with a limiting sliding groove, a limiting sliding block slides in the limiting sliding groove, and the inner bottom surface of a groove is fixedly connected with a second spring. A fixing belt is fixedly connected to the outer surface of the middle of the sleeve, a vibration sensor is installed on the surface of the fixing belt, a fixing plate is fixedly connected to the surface of the fixing belt, an air volume sensor is installed on the upper surface of the fixing plate, and a data transmission module is installed on the upper surface of the fixing plate; according to the utility model, through the telescopic arrangement of the telescopic rod, the device can be installed in smoke exhaust pipelines with different sizes, and through the arrangement of the microswitch, after the sleeve is tightly pressed and fixed, the device automatically stops working, the convenience is high, and the purpose of improving the applicability of detection equipment is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to an operating condition detection device for a smoke exhaust fan. Background Art

[0002] The exhaust fan is a machine that can quickly exhaust the odor, high temperature, and oil smoke generated during food processing in the kitchen. The machine is characterized by good high temperature resistance and high efficiency. The types of fans include centrifugal fans, axial flow fans, centrifugal fans, and axial flow fans. Choose a suitable machine according to the size of the space and the layout of the exhaust hood. Since oil smoke will adhere to the exhaust fan, when the oil smoke adheres too much, it will affect the working efficiency of the exhaust fan. To detect whether there is too much oil smoke on the exhaust fan, the exhaust fan needs to be disassembled, which is inconvenient to detect.

[0003] A smoke exhaust fan operating condition detection device is disclosed in the Chinese utility model patent application disclosure specification CN210738895U. Although the utility model has the effect of being able to detect the operating condition of the smoke exhaust fan by being externally connected to the smoke exhaust fan without disassembling the smoke exhaust fan for inspection, which facilitates the detection, the detection device is fixedly installed in the smoke exhaust duct. When a failure occurs and the detection device needs to be repaired, the disassembly process is relatively troublesome and there is a certain inconvenience. In addition, due to the different sizes of different types of smoke exhaust ducts, when installing the detection device, it is necessary to select a suitable mounting frame, which has the disadvantage of poor applicability during installation. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a smoke exhaust fan operation status detection device, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: an operating condition detection device for a smoke exhaust fan, comprising a sleeve, the inner surface of the sleeve is slidably connected with a telescopic rod, the inner surface of the sleeve is provided with a limit slide groove, the outer surface of the telescopic rod is fixedly connected with a limit slide block, the limit slide block slides in the limit slide groove, the outer end surface of the telescopic rod is fixedly connected with a fixed block, the surface of the fixed block is installed with an anti-slip rubber pad, the surfaces of the fixed block and the anti-slip rubber pad are provided with a through groove, the surface of the through groove is provided with a telescopic block, the surface of the fixed block is provided with a groove, the telescopic block slides in the groove, the inner bottom surface of the groove is fixedly connected with a second spring, the other end of the second spring is provided with a micro switch, the outer surface of the middle part of the sleeve is fixedly connected with a fixing belt, the surface of the fixing belt is provided with a vibration sensor, the surface of the fixing belt is fixedly connected with a fixing plate, the upper surface of the fixing plate is provided with an air volume sensor, and the upper surface of the fixing plate is provided with a data transmission module.

[0008] Optionally, a bidirectional servo motor is installed on the inner surface of the middle part of the sleeve, a screw rod is fixedly connected to the output end of the bidirectional servo motor, a threaded hole is opened on the inner end surface of the telescopic rod, and one end of the screw rod away from the bidirectional servo motor is threadedly connected in the threaded hole.

[0009] Optionally, the number of the screw rod, telescopic rod, threaded hole, fixing block, anti-slip rubber pad, second spring, micro switch and telescopic block is two each, and they are symmetrically distributed on both sides of the sleeve.

[0010] Optionally, the number of the limiting sliding blocks on the surface of each telescopic rod is four, and they are distributed in a circular array.

[0011] Optionally, a first spring is fixedly connected to the inner bottom surface of the groove, a telescopic block is fixedly connected to the other end of the first spring, and a micro switch is arranged on the emergency stop circuit of the bidirectional servo motor.

[0012] Optionally, the vibration sensor and the wind volume sensor both transmit data to a data transmission module via wires, and the data transmission module communicates data with an external detector.

[0013] (III) Beneficial effects

[0014] The utility model provides a device for detecting the operating status of a smoke exhaust fan, which has the following beneficial effects:

[0015] 1. The operating condition detection device of the smoke exhaust fan has the effect of being easy to install in the smoke exhaust pipes of different sizes through the arrangement of the sleeve, telescopic rod, fixed block, anti-skid rubber pad, telescopic block and micro switch. When in use, the sleeve is moved to the corresponding position of the smoke exhaust pipe, and then the sleeve is erected, and the output end of the bidirectional servo motor is controlled to rotate to the right through the controller of the bidirectional servo motor, and the bidirectional servo motor drives the screw rod to rotate, and the other end of the screw rod is threadedly connected in the threaded hole. As the screw rod rotates , so that the screw rod drives the telescopic rod to move. During the movement, the limit slider on the outer surface of the telescopic rod slides in the limit slide groove, which plays a role of limiting. By making the telescopic rods on both sides slide outward synchronously in the sleeve, the telescopic blocks on the end faces of the two telescopic rods are in contact with the inner wall of the smoke exhaust pipe. After contact, as the telescopic rod moves, the telescopic block is squeezed with the inner wall of the smoke exhaust pipe, so that the telescopic block slides into the groove. At this time, the first spring is elastically deformed. As the telescopic rod extends outward, the outer surface of the anti-slip rubber pad is in contact with the inner wall of the smoke exhaust pipe. And the anti-skid rubber pad is deformed. When the telescopic block is squeezed to the middle of the anti-skid rubber pad before deformation, the inner side of the telescopic block contacts the micro switch. The sleeve is fixed by two forces applied to the inner wall of the smoke exhaust pipe. After the telescopic block contacts the micro switch, since the micro switch is set on the emergency stop circuit of the bidirectional servo motor, the bidirectional servo motor automatically stops working at this time, thereby completing the fixed installation of the sleeve. After installation, the vibration sensor is used to monitor the vibration inside the smoke exhaust pipe to detect whether there is abnormal vibration to determine the degree of wear of the fan bearing and the impeller. The air volume sensor is used to monitor the air volume to detect whether the fan output air volume is normal and whether there is blockage or air leakage in the smoke exhaust system. The monitored data is sent to the data transmission module through the wire, and the data transmission module is sent to the external detection controller. The device can be installed in smoke exhaust pipes of different sizes through the telescopic setting at the telescopic rod. At the same time, through the setting of the micro switch, the sleeve is automatically stopped after being tightened and fixed. It is very convenient and achieves the purpose of improving the applicability of the detection equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the front section of the utility model;

[0018] Figure 3 For this utility model Figure 2 The structural diagram at A in the middle;

[0019] Figure 4 For this utility model Figure 2 Schematic diagram of the structure in the middle.

[0020] In the figure: 1. sleeve; 2. bidirectional servo motor; 3. screw; 4. telescopic rod; 5. threaded hole; 6. limit slide groove; 7. limit slider; 8. fixed block; 9. anti-slip rubber pad; 10. groove; 11. first spring; 12. telescopic block; 13. through groove; 14. second spring; 15. micro switch; 16. fixing belt; 17. vibration sensor; 18. fixing plate; 19. air volume sensor; 20. data transmission module. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Example 1

[0023] See also Figures 1 to 4 The utility model provides a technical solution: a smoke exhaust fan operation status detection device, including a sleeve 1, the inner surface of the sleeve 1 is slidably connected with a telescopic rod 4, the inner surface of the sleeve 1 is provided with a limited sliding groove 6, the outer surface of the telescopic rod 4 is fixedly connected with a limited sliding block 7, the number of the limited sliding blocks 7 on the surface of each telescopic rod 4 is four, and they are distributed in a circular array, the limited sliding block 7 slides in the limited sliding groove 6, the inner surface of the middle part of the sleeve 1 is installed with a bidirectional servo motor 2, the output end of the bidirectional servo motor 2 is fixedly connected with a screw rod 3, the telescopic rod 4 A threaded hole 5 is provided on the inner end surface, and one end of the screw rod 3 away from the bidirectional servo motor 2 is threadedly connected in the threaded hole 5. A fixed block 8 is fixedly connected to the outer end surface of the telescopic rod 4, and a non-slip rubber pad 9 is installed on the surface of the fixed block 8. A through groove 13 is provided on the surface of the fixed block 8 and the non-slip rubber pad 9. A telescopic block 12 is provided on the surface of the through groove 13. A groove 10 is provided on the surface of the fixed block 8. The telescopic block 12 slides in the groove 10. A second spring 14 is fixedly connected to the inner bottom surface of the groove 10, and a micro switch 15 is installed on the other end of the second spring 14. There are two screw rods 3, telescopic rods 4, threaded holes 5, fixed blocks 8, anti-slip rubber pads 9, second springs 14, micro switches 15 and telescopic blocks 12, which are symmetrically distributed on both sides of the sleeve 1. A fixing belt 16 is fixedly connected to the outer surface of the middle part of the sleeve 1, and a vibration sensor 17 is installed on the surface of the fixing belt 16. A fixing plate 18 is fixedly connected to the surface of the fixing belt 16, and an air volume sensor 19 is installed on the upper surface of the fixing plate 18. A data transmission module 20 is installed on the upper surface of the fixing plate 18. A first spring 11 is fixedly connected to the inner bottom surface of the groove 10, and the other end of the first spring 11 is fixedly connected to the telescopic block 12. The micro switch 15 is arranged on the emergency stop circuit of the bidirectional servo motor 2. The vibration sensor 17 and the air volume sensor 19 both transmit data to the data transmission module 20 through wires, and the data transmission module 20 communicates data with an external detector.

[0024] In order to achieve the purpose of improving the applicability of the detection equipment, when in use, the sleeve 1 is moved to the corresponding position of the smoke exhaust pipe, and then the sleeve 1 is erected, and the output end of the bidirectional servo motor 2 is controlled by the controller of the bidirectional servo motor 2 to rotate to the right, and the bidirectional servo motor 2 drives the screw rod 3 to rotate, and the other end of the screw rod 3 is threadedly connected in the threaded hole 5. As the screw rod 3 rotates, the screw rod 3 drives the telescopic rod 4 to move. During the movement, the limit slider 7 on the outer surface of the telescopic rod 4 slides in the limit slide groove 6, which plays a role of limiting. The telescopic rods 4 on both sides slide outward synchronously in the sleeve 1, so that the telescopic blocks 12 on the end faces of the two telescopic rods 4 contact the inner wall of the smoke exhaust pipe. After contact, as the telescopic rods 4 move, the telescopic blocks 12 are squeezed with the inner wall of the smoke exhaust pipe, so that the telescopic blocks 12 slide into the groove 10, at which time the first spring 11 is elastically deformed. As the telescopic rods 4 extend outward, the outer surface of the anti-skid rubber pad 9 contacts the inner wall of the smoke exhaust pipe and deforms the anti-skid rubber pad 9. When the telescopic block 12 is squeezed to the point where the anti-skid rubber pad 9 is not deformed, When the sleeve 1 is in the middle, the inner side of the telescopic block 12 contacts the micro switch 15, and the sleeve 1 is fixed by two forces applied to the inner wall of the smoke exhaust pipe. After the telescopic block 12 contacts the micro switch 15, since the micro switch 15 is set on the emergency stop circuit of the bidirectional servo motor 2, the bidirectional servo motor 2 automatically stops working at this time, thereby completing the fixed installation of the sleeve 1. After installation, the vibration sensor 17 is used to monitor the vibration inside the smoke exhaust pipe to detect whether there is abnormal vibration to determine the degree of wear of the fan bearing and the impeller. The air volume sensor 19 is used to monitor the air volume to detect whether the fan output air volume is normal and whether there is blockage or air leakage in the smoke exhaust system. The monitored data is sent to the data transmission module 20 through the wire, and the data transmission module 20 sends it to the external detection controller. The device can be installed in smoke exhaust pipes of different sizes through the telescopic setting at the telescopic rod 4. At the same time, through the setting of the micro switch 15, the sleeve 1 automatically stops working after being tightened and fixed. It is very convenient and achieves the purpose of improving the applicability of the detection equipment.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A smoke exhaust fan operation status detection device, comprising a sleeve (1), characterized in that: The inner surface of the sleeve (1) is slidably connected to the telescopic rod (4), the inner surface of the sleeve (1) is provided with a limit slide groove (6), the outer surface of the telescopic rod (4) is fixedly connected to a limit slide block (7), the limit slide block (7) slides in the limit slide groove (6), the outer end surface of the telescopic rod (4) is fixedly connected to a fixed block (8), the surface of the fixed block (8) is provided with an anti-slip rubber pad (9), the surfaces of the fixed block (8) and the anti-slip rubber pad (9) are provided with a through groove (13), the surface of the through groove (13) is provided with a telescopic block (12), and the surface of the fixed block (8) is provided with a groove (10), the telescopic block (12) slides in the groove (10), the inner bottom surface of the groove (10) is fixedly connected to a second spring (14), the other end of the second spring (14) is installed with a micro switch (15), the outer surface of the middle part of the sleeve (1) is fixedly connected to a fixing belt (16), the surface of the fixing belt (16) is installed with a vibration sensor (17), the surface of the fixing belt (16) is fixedly connected to a fixing plate (18), the upper surface of the fixing plate (18) is installed with an air volume sensor (19), and the upper surface of the fixing plate (18) is installed with a data transmission module (20).

2. The operating condition detection device of a smoke exhaust fan according to claim 1, characterized in that: A bidirectional servo motor (2) is mounted on the inner surface of the middle portion of the sleeve (1); a screw rod (3) is fixedly connected to the output end of the bidirectional servo motor (2); a threaded hole (5) is provided on the inner end surface of the telescopic rod (4); and one end of the screw rod (3) away from the bidirectional servo motor (2) is threadedly connected in the threaded hole (5).

3. The operating condition detection device of a smoke exhaust fan according to claim 2, characterized in that: The number of the screw rod (3), telescopic rod (4), threaded hole (5), fixing block (8), anti-slip rubber pad (9), second spring (14), micro switch (15) and telescopic block (12) is two, and they are symmetrically distributed on both sides of the sleeve (1).

4. The operating condition detection device of a smoke exhaust fan according to claim 1, characterized in that: The number of the limiting sliding blocks (7) on the surface of each telescopic rod (4) is four and they are distributed in a circular array.

5. The operating condition detection device of a smoke exhaust fan according to claim 1, characterized in that: The inner bottom surface of the groove (10) is fixedly connected to a first spring (11), the other end of the first spring (11) is fixedly connected to a telescopic block (12), and the micro switch (15) is arranged on the emergency stop circuit of the bidirectional servo motor (2).

6. The operating condition detection device of a smoke exhaust fan according to claim 1, characterized in that: The vibration sensor (17) and the air volume sensor (19) both perform data transmission with the data transmission module (20) via wires, and the data transmission module (20) performs data communication with an external detector.

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