An on-line device for detecting the moisture content of bagasse

Abstract

The utility model discloses a kind of bagasse moisture on-line detection devices, it is related to bagasse technical field, including conveyer belt, the top of conveyer belt is provided with detection mechanism, detection mechanism includes fixed bracket, the front surface of fixed bracket is fixedly connected with control panel, the inner wall of fixed bracket is fixedly connected with infrared emitter, infrared receiver and electric telescopic rod, the telescopic end of electric telescopic rod is fixedly connected with movable plate, the bottom surface of movable plate is fixedly connected with transmitting antenna and receiving antenna, the upper surface of movable plate is fixedly connected with microwave oscillator and detector. It can be completed moisture detection by being provided with infrared emitter, infrared receiver and microwave oscillator, transmitting antenna, receiving antenna and the mutual cooperation between detector, without direct contact with bagasse sample, effectively avoid the pollution to sample in traditional contact type detection and the interference to next batch detection result, significantly improve the precision of detection.

Description

Technical Field

[0001] This utility model relates to the field of bagasse technology, specifically an online moisture detection device for bagasse. Background Technology

[0002] Bagasse is a byproduct of sugar production. In the 2024 / 25 sugarcane crushing season, China produced approximately 9.5 million tons of sugarcane sugar, with about 70 million tons of sugarcane crushed, generating about 140 million tons of bagasse. Of this, 75% of the bagasse is used for power generation in sugar mill boilers, providing steam and electricity for the sugar production process and achieving energy recycling. The detection of bagasse moisture content is a prerequisite for the "efficient, stable, safe, environmentally friendly, and economical" operation of bagasse boilers. Through precise detection and control, the fuel characteristics can be matched with the boiler operating conditions, maximizing energy utilization, reducing operating risks and costs, and meeting environmental protection requirements. It is an indispensable part of energy management for sugar enterprises.

[0003] In China, sugar mills typically use two main methods to detect the moisture content of bagasse: offline methods (static laboratory testing) and online methods (dynamic monitoring at the production site). Online methods, which use sensors installed in bagasse conveying systems (such as conveyor belts and feeders) to continuously monitor moisture content in real time, transmit the data directly to the control system for dynamic adjustment of boiler operating parameters. This is the mainstream choice for modern sugar mills. Currently, most commercially available online testing instruments are microwave-based or near-infrared spectroscopy (NIR) online testing instruments. The former is easily affected by bagasse thickness, while the latter is significantly affected by bagasse color and particle size, thus limiting their application range and measurement accuracy.

[0004] To address these issues, we have developed an online moisture detection device for bagasse. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an online moisture detection device for bagasse.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an online moisture detection device for bagasse, comprising a conveyor belt, a detection mechanism disposed above the conveyor belt, the detection mechanism comprising a fixed frame, a control panel fixedly connected to the front of the fixed frame, an infrared transmitter, an infrared receiver and an electric telescopic rod fixedly connected to the inner wall of the fixed frame, a movable plate fixedly connected to the telescopic end of the electric telescopic rod, a transmitting antenna and a receiving antenna fixedly connected to the bottom surface of the movable plate, and a microwave oscillator and a detector fixedly connected to the upper surface of the movable plate.

[0007] Furthermore, a limiting frame is fixedly connected to the outer surface of the control panel, the back of the limiting frame is fixedly connected to the front of the fixing frame, and a groove is provided on the outer surface of the conveyor belt.

[0008] Furthermore, four support frames are fixedly connected to the outer surface of the fixed frame, and the bottom surface of the support frames is fixedly connected to the upper surface of the conveyor belt.

[0009] Furthermore, a protective seat is fixedly connected to the outer surface of the electric telescopic rod, and the upper surface of the protective seat is fixedly connected to the inner wall of the fixing frame.

[0010] Furthermore, a reinforcing plate is fixedly connected to the outer surface of the telescopic end of the electric telescopic rod, and the bottom surface of the reinforcing plate is fixedly connected to the upper surface of the movable plate.

[0011] Furthermore, the inner wall of the reinforcing plate is threaded with four fixing bolts, and the outer surface of each set of fixing bolts is threadedly connected to the inner wall of the movable plate.

[0012] Compared with existing technologies, this online bagasse moisture detection device has the following advantages:

[0013] 1. This utility model, through the cooperation of an infrared transmitter, an infrared receiver, a microwave oscillator, a transmitting antenna, a receiving antenna, and a detector, can complete moisture detection without direct contact with bagasse samples. This effectively avoids sample contamination and interference with subsequent batch test results in traditional contact testing, and significantly improves the accuracy of the detection.

[0014] 2. This utility model is equipped with an electric telescopic rod that can move the movable plate up and down, thereby adjusting the position of the transmitting and receiving antennas. It can flexibly adjust the height of the detection components according to the actual situation such as the thickness of the bagasse on the conveyor belt, adapt to the moisture detection needs of bagasse under different conditions, and improve the applicability of the device.

[0015] 3. This utility model combines microwave and near-infrared (NIR) methods to detect moisture. It utilizes the strong penetrating power and high moisture adaptability of microwaves, and the surface sensitivity and rapid response capability of near-infrared methods. For materials such as bagasse, which have large moisture fluctuations, complex structures, and are easily affected by environmental interference, this combination can significantly improve the detection accuracy and stability, and provide more reliable data support for the efficient operation of bagasse boilers in sugar factories. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the online moisture detection device for bagasse of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the fixing frame of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the infrared receiver of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the movable plate of this utility model.

[0020] In the diagram: 1. Conveyor belt; 2. Detection mechanism; 201. Fixing frame; 202. Control panel; 203. Infrared transmitter; 204. Infrared receiver; 205. Transmitting antenna; 206. Receiving antenna; 207. Electric telescopic rod; 208. Movable plate; 209. Microwave oscillator; 210. Detector; 3. Support frame; 4. Groove; 5. Limiting frame; 6. Protective seat; 7. Reinforcing plate; 8. Fixing bolts. Detailed Implementation

[0021] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0022] This embodiment provides an online moisture detection device for bagasse. This device facilitates non-contact detection of bagasse moisture content, avoids sample contamination and batch-to-batch interference, and improves detection accuracy.

[0023] See Figure 1 An online moisture detection device for bagasse includes a conveyor belt 1, a detection mechanism 2 disposed above the conveyor belt 1, the detection mechanism 2 including a fixed frame 201, four support frames 3 fixedly connected to the outer surface of the fixed frame 201, the bottom surface of the support frames 3 being fixedly connected to the upper surface of the conveyor belt 1, the support frames 3 can fix and limit the position of the fixed frame 201, thereby enhancing the stability of the device.

[0024] See Figure 2 , Figure 3 and Figure 4 The front of the fixed frame 201 is fixedly connected to the control panel 202. The inner wall of the fixed frame 201 is fixedly connected to the infrared transmitter 203, the infrared receiver 204 and the electric telescopic rod 207. The outer surface of the control panel 202 is fixedly connected to the limiting frame 5. The back of the limiting frame 5 is fixedly connected to the front of the fixed frame 201. The outer surface of the conveyor belt 1 is provided with a groove 4. The limiting frame 5 can fix the position of the control panel 202 to prevent its position from shifting and becoming unstable during use.

[0025] See Figure 1 and Figure 4 The telescopic end of the electric telescopic pole 207 is fixedly connected to a movable plate 208, and a protective seat 6 is fixedly connected to the outer surface of the electric telescopic pole 207. The upper surface of the protective seat 6 is fixedly connected to the inner wall of the fixed frame 201. The protective seat 6 can protect the electric telescopic pole 207 and prevent it from being interfered with by external dust and impurities during use.

[0026] See Figure 2 , Figure 3 and Figure 4 The bottom surface of the movable plate 208 is fixedly connected to the transmitting antenna 205 and the receiving antenna 206. The outer surface of the telescopic end of the electric telescopic pole 207 is fixedly connected to the reinforcing plate 7. The bottom surface of the reinforcing plate 7 is fixedly connected to the upper surface of the movable plate 208. The reinforcing plate 7 can reinforce the electric telescopic pole 207 and the movable plate 208 to prevent them from swaying during movement.

[0027] See Figure 4 A microwave oscillator 209 and a detector 210 are fixedly connected to the upper surface of the movable plate 208. Four fixing bolts 8 are threadedly connected to the inner wall of the reinforcing plate 7. The outer surface of each set of fixing bolts 8 is threadedly connected to the inner wall of the movable plate 208. The position of the reinforcing plate 7 can be fixed by fixing bolts 8 to prevent it from shaking or shifting during movement.

[0028] Working principle: When in use, the bagasse sample to be tested is first placed on the conveyor belt 1. The conveyor belt 1 moves the bagasse towards the detection mechanism 2. When the bagasse sample enters the detection area, the infrared rays emitted by the infrared transmitter 203 are blocked by the bagasse. The infrared receiver 204 receives the signal change and transmits the information to the control panel 202, triggering the detection system to start.

[0029] The control panel 202 determines the thickness of the bagasse based on infrared signals and automatically controls the extension and retraction of the electric telescopic rod 207. The electric telescopic rod 207 drives the movable plate 208 to move up and down, adjusting the positions of the transmitting antenna 205 and the receiving antenna 206 to ensure optimal microwave signal detection. The microwave oscillator 209 generates a microwave signal of a specific frequency, which is emitted towards the bagasse through the transmitting antenna 205. When the microwave passes through the bagasse, its energy is attenuated due to moisture absorption. The reflected signal is captured by the receiving antenna 206. The detector 210 processes the received microwave signal, analyzes the degree of signal attenuation, calculates the moisture content of the bagasse, and displays the result on the control panel 202 in real time. The conveyor belt 1 continuously transports the bagasse, and the detection mechanism 2 continuously detects each batch of samples according to the above process. The detection data can be stored or exported through the control panel 202.

[0030] 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. An online moisture detection device for bagasse, comprising a conveyor belt (1), characterized in that: A detection mechanism (2) is provided above the conveyor belt (1). The detection mechanism (2) includes a fixed frame (201). A control panel (202) is fixedly connected to the front of the fixed frame (201). An infrared transmitter (203), an infrared receiver (204), and an electric telescopic rod (207) are fixedly connected to the inner wall of the fixed frame (201). A movable plate (208) is fixedly connected to the telescopic end of the electric telescopic rod (207). A transmitting antenna (205) and a receiving antenna (206) are fixedly connected to the bottom surface of the movable plate (208). A microwave oscillator (209) and a detector (210) are fixedly connected to the upper surface of the movable plate (208).

2. The online moisture detection device for bagasse according to claim 1, characterized in that: The outer surface of the control panel (202) is fixedly connected to a limiting frame (5), the back of the limiting frame (5) is fixedly connected to the front of the fixing frame (201), and the outer surface of the conveyor belt (1) is provided with a groove (4).

3. The online moisture detection device for bagasse according to claim 1, characterized in that: The outer surface of the fixed frame (201) is fixedly connected to four support frames (3), and the bottom surface of the support frames (3) is fixedly connected to the upper surface of the conveyor belt (1).

4. The online moisture detection device for bagasse according to claim 1, characterized in that: The outer surface of the electric telescopic rod (207) is fixedly connected to a protective seat (6), and the upper surface of the protective seat (6) is fixedly connected to the inner wall of the fixing frame (201).

5. The online moisture detection device for bagasse according to claim 1, characterized in that: A reinforcing plate (7) is fixedly connected to the outer surface of the telescopic end of the electric telescopic rod (207), and the bottom surface of the reinforcing plate (7) is fixedly connected to the upper surface of the movable plate (208).

6. The online moisture detection device for bagasse according to claim 5, characterized in that: The inner wall of the reinforcing plate (7) is threaded with four fixing bolts (8), and the outer surface of each set of fixing bolts (8) is threadedly connected to the inner wall of the movable plate (208).

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