A papermaking fan operation fault alarm mechanism

Abstract

This utility model belongs to the field of fan fault alarm technology, and particularly relates to a fan operation fault alarm mechanism for the paper industry. It includes a main frame with two support plates at its upper end. A bidirectional threaded rod is rotatably connected between the two support plates. Two movable blocks are threaded onto the bidirectional threaded rod, and each movable block is threaded onto a portion of the bidirectional threaded rod with opposite thread directions. A rotating disk is rotatably connected to the end of one support plate away from the other. The advantages are: in this utility model, the alarm is clamped and fixed in a placement slot by two clamping blocks moving closer together. When the alarm needs battery replacement or maintenance, the rotating disk is released and rotated to loosen the clamping blocks, allowing the alarm to be removed. Disassembly of the alarm is very convenient, facilitating maintenance by staff.

Description

Technical Field

[0001] This utility model relates to the field of fan fault alarm technology, and in particular to a fan operation fault alarm mechanism for the paper industry. Background Technology

[0002] In the papermaking industry, fans are crucial equipment, widely used in multiple production stages such as ventilation, gas conveying, drying, and waste gas treatment. Fans can regulate the temperature and humidity of the workshop, ensure heat dissipation of equipment, and discharge dust, volatile organic compounds (VOCs), or harmful gases (such as hydrogen sulfide) generated during the papermaking process.

[0003] When a fan malfunctions and stops rotating for an extended period, it can cause abnormal temperatures, leading to overheating and damage to the equipment. Therefore, it is necessary to provide early warnings for fan malfunctions and to promptly alert staff when the fan stops rotating. As a result, alarms are usually installed to monitor the normal operation of the fan. Existing alarms are typically mounted on the fan using screws, nuts, mounting plates, or similar methods, requiring tools for installation and removal. This makes the installation and removal of the alarm very cumbersome when maintenance or battery replacement is needed.

[0004] To address the aforementioned issues, we propose a fault alarm mechanism for blowers in the papermaking industry. Utility Model Content

[0005] The purpose of this utility model is to solve the problems in the background technology by proposing a fault alarm mechanism for the operation of a fan in the papermaking industry.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a papermaking fan operation fault alarm mechanism, comprising a main frame, two support plates at the upper end of the main frame, a bidirectional threaded rod rotatably connected between the two support plates, two movable blocks threaded on the bidirectional threaded rod, the two movable blocks being threaded on the two oppositely threaded portions of the bidirectional threaded rod, a rotating disk rotatably connected to the end of one support plate away from the other support plate, the rotating disk being coaxially and fixedly connected to the bidirectional threaded rod.

[0007] In the aforementioned papermaking fan operation fault alarm mechanism, a one-way screw is provided on the rotating disk. The one-way screw passes through the rotating disk and is threadedly connected to it. A friction block is fixedly connected to the end of the one-way screw near the support plate, and a rotating column is fixedly connected to the end of the one-way screw away from the support plate.

[0008] In the above-mentioned papermaking fan operation fault alarm mechanism, the upper end of the main frame is provided with a placement groove, and the opposite ends of the two moving blocks are fixedly connected with sliding rods. The two sliding rods pass through the placement groove and are slidably connected thereto, and clamping blocks are fixedly connected to the two sliding rods.

[0009] In the above-mentioned papermaking fan operation fault alarm mechanism, the placement slot is provided with a placement hole, the placement slot is provided with an alarm, and the lower end of the alarm is provided with a magnetic detection probe, which penetrates through the placement hole.

[0010] In the above-mentioned papermaking fan operation fault alarm mechanism, a fixed plate is fixedly connected inside the main frame, a rotary motor is fixedly installed on the fixed plate, a rotating shaft is connected to the drive end of the rotary motor, a fan blade is fixedly connected to the front end of the rotating shaft, and a magnetic block is provided on the rotating shaft.

[0011] In the aforementioned papermaking fan operation fault alarm mechanism, the alarm is equipped with an alarm light and a loudspeaker.

[0012] Compared with existing technologies, the beneficial effects of the papermaking fan operation fault alarm mechanism disclosed in this application are as follows:

[0013] Significantly improved ease of installation, disassembly, and maintenance: Through the coordinated design of the bidirectional threaded rod and the moving blocks, rotating the rotating disc drives the two moving blocks to move synchronously towards or away from each other along the bidirectional threaded rod. This, in turn, uses a sliding rod to move the clamping block to quickly clamp and release the alarm. Compared to traditional screw and nut fixing methods, no additional tools are needed; the alarm can be installed and disassembled simply by manually rotating the rotating disc. This greatly simplifies routine maintenance processes such as battery replacement and troubleshooting, effectively improving maintenance efficiency.

[0014] Enhanced structural stability and reliability: The one-way screw on the rotating disk, in conjunction with the rubber friction block, can drive the friction block to press against the support plate by rotating the rotating column. The high frictional properties of the rubber are used to achieve stable locking of the rotating disk, preventing the bidirectional screw from rotating unexpectedly due to external factors such as equipment vibration, and ensuring the long-term stability of the alarm clamping state.

[0015] The monitoring and early warning functions are precise and efficient: The magnetic detection probe at the bottom of the alarm is aligned with the magnetic block on the rotating shaft through the placement hole. When the fan is running normally, the probe can detect the rotation signal of the magnetic block in real time. If the fan fails and stops, the probe will trigger the alarm light and speaker to alarm in conjunction because it cannot continuously detect the magnetic block signal (dual warning of light and sound). This effectively avoids production accidents such as temperature and humidity imbalance and equipment overheating caused by the fan stopping for a long time, and ensures the continuity of paper production and equipment safety.

[0016] Compact structure and strong adaptability: The main frame, support plate, sliding rod and other components adopt an integrated design, resulting in a compact overall structure that can flexibly adapt to the installation space requirements of different types of fans, thus broadening the application scenarios of the alarm mechanism. In this utility model, the alarm is clamped and fixed in the placement slot by two moving blocks moving closer to each other. When it is necessary to replace the battery or perform maintenance on the alarm, the rotating disk is released and rotated to loosen the two clamping blocks, allowing the alarm to be removed. The disassembly of the alarm is very convenient, facilitating maintenance by staff. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a papermaking fan operation fault alarm mechanism proposed in this utility model;

[0018] Figure 2 This is a top view schematic diagram of a partial structure of a papermaking fan operation fault alarm mechanism proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the alarm device structure in a papermaking fan operation fault alarm mechanism proposed in this utility model.

[0020] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0021] In the diagram: 1. Main frame; 2. Support plate; 3. Two-way threaded rod; 4. Moving block; 5. Rotating disk; 6. One-way screw; 7. Rotating column; 8. Friction block; 9. Placement slot; 10. Sliding rod; 11. Clamping block; 12. Placement hole; 13. Alarm; 14. Magnetic detection probe; 15. Speaker; 16. Alarm light; 17. Fixing plate; 18. Rotary motor; 19. Rotating shaft; 20. Magnetic block; 21. Fan. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-4A papermaking fan operation fault alarm mechanism includes a main frame 1. Two support plates 2 are provided at the upper end of the main frame 1. A bidirectional threaded rod 3 is rotatably connected between the two support plates 2. Two movable blocks 4 are threaded onto the bidirectional threaded rod 3, respectively threaded onto the two oppositely threaded portions of the bidirectional threaded rod 3. A rotating disk 5 is rotatably connected to the end of one support plate 2 away from the other support plate 2. The rotating disk 5 is coaxially and fixedly connected to the bidirectional threaded rod 3. Rotating the rotating disk 5 can drive the bidirectional threaded rod 3 to rotate. Both movable blocks 4 slide against the upper end of the main frame 1 to provide a limiting function. Rotating the bidirectional threaded rod 3 allows the two movable blocks 4 to move closer to or further away from each other.

[0024] A one-way screw 6 is provided on the rotating disk 5, which passes through the rotating disk 5 and is threaded to it. A friction block 8 is fixedly connected to the end of the one-way screw 6 near the support plate 2, and a rotating column 7 is fixedly connected to the end of the one-way screw 6 away from the support plate 2. Rotating the rotating column 7 drives the one-way screw 6 to rotate, thereby causing the friction block 8 to move closer to the corresponding support plate 2 and press against the support plate 2. The friction block 8 is made of rubber, which has good anti-slip performance and high friction force, and fixes the rotating disk 5 in place by friction force.

[0025] The upper end of the main frame 1 is provided with a placement groove 9. The opposite ends of the two moving blocks 4 are fixedly connected with sliding rods 10. The two sliding rods 10 pass through the placement groove 9 and are slidably connected to it. The two sliding rods 10 are fixedly connected with clamping blocks 11. The placement groove 9 is provided with a placement hole 12. The placement groove 9 is provided with an alarm 13. The lower end of the alarm 13 is provided with a magnetic detection probe 14. The magnetic detection probe 14 passes through the placement hole 12. The main frame 1 is fixedly connected with a fixing plate 17. The fixing plate 17 is fixedly installed with a rotary motor 18. The drive end of the rotary motor 18 is connected with a rotating shaft 19. The front end of the rotating shaft 19 is fixedly connected with a fan blade 21. The rotating shaft 19 is provided with a magnetic block 20.

[0026] After the alarm 13 is placed in the placement slot 9, the magnetic detection probe 14 extends into the main frame 1 through the placement hole 12 and is aligned with the rotating shaft 19. When the rotating motor 18 drives the rotating shaft 19 to rotate, causing the fan blades 21 to rotate, the magnetic detection probe 14 can detect the magnetic block 20 on the rotating shaft 19. The alarm 13 has a built-in signal processor that continuously receives the pulse signal transmitted by the magnetic detection probe 14. The alarm 13 is equipped with an alarm light 16 and a speaker 15. The magnetic detection probe 14 is an SMC type D-Z73 magnetic induction probe. When the rotating motor 18 malfunctions and stops rotating, the magnetic detection probe 14 will detect the magnetic block 20 on the rotating shaft 19. When the probe 14 fails to detect the magnetic block 20 for a period of time, the pulse signal is interrupted, the alarm light 16 illuminates, and the speaker 15 emits an alarm sound to alert the staff, thus preventing damage caused by the prolonged shutdown of the fan blade 21. The alarm 13 is held in place in the slot 9 by two clamping blocks 11 moving closer together via two moving blocks 4. When the alarm 13 needs battery replacement or maintenance, the rotating disk 5 is released and rotated to loosen the clamping blocks 11, allowing the alarm 13 to be removed. Disassembly of the alarm 13 is very convenient, facilitating maintenance by staff. The non-contact detection method using the magnetic block and magnetic probe avoids the detection failure problem caused by mechanical wear of traditional contact sensors. Simultaneously, the SMC D-Z73 probe possesses anti-dust interference (a common environment in paper mills) and anti-vibration characteristics (adapting to the mechanical vibration of the fan during operation), ensuring stable output of detection signals even under complex operating conditions, effectively improving the reliability of fault warning.

[0027] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A papermaking fan operation fault alarm mechanism, comprising a main frame (1), characterized in that, The upper end of the main frame (1) is provided with two support plates (2), and the two support plates (2) are rotatably connected to a bidirectional threaded rod (3). Two moving blocks (4) are threaded on the bidirectional threaded rod (3). The two moving blocks (4) are respectively threaded on the two parts of the bidirectional threaded rod (3) with opposite thread directions. One of the support plates (2) is rotatably connected to a rotating disk (5) at the end away from the other support plate (2). The rotating disk (5) is coaxially fixedly connected to the bidirectional threaded rod (3). The upper end of the main frame (1) is provided with a placement groove (9). The opposite ends of the two moving blocks (4) are fixedly connected to sliding rods (10). The two sliding rods (10) pass through the placement groove (9) and are slidably connected to it. The two sliding rods (10) are fixedly connected to clamping blocks (11). An alarm (13) is provided on the placement groove (9).

2. The papermaking fan operation fault alarm mechanism according to claim 1, characterized in that, The rotating disk (5) is provided with a one-way screw (6), which passes through the rotating disk (5) and is threadedly connected to it. A friction block (8) is fixedly connected to one end of the one-way screw (6) near the support plate (2), and a rotating column (7) is fixedly connected to one end of the one-way screw (6) away from the support plate (2).

3. The papermaking fan operation fault alarm mechanism according to claim 2, characterized in that, The friction block (8) is made of rubber.

4. The papermaking fan operation fault alarm mechanism according to claim 3, characterized in that, The placement slot (9) is provided with a placement hole (12), and the lower end of the alarm (13) is provided with a magnetic detection probe (14), which passes through the placement hole (12).

5. The papermaking fan operation fault alarm mechanism according to claim 1, characterized in that, A fixing plate (17) is fixedly connected inside the main frame (1). A rotary motor (18) is fixedly installed on the fixing plate (17). A rotating shaft (19) is connected to the drive end of the rotary motor (18). A fan blade (21) is fixedly connected to the front end of the rotating shaft (19). A magnetic block (20) is provided on the rotating shaft (19).

6. The papermaking fan operation fault alarm mechanism according to claim 4, characterized in that, The alarm (13) is equipped with an alarm light (16) and a speaker (15).

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