Hot blast stove device with spark detection function

Abstract

The utility model discloses a hot-blast stove device with a spark detection function, relates to the technical field of hot-blast stoves, and aims to solve the technical problem that agricultural products are easily damaged by sparks generated by the hot-blast stoves, the hot-blast stove device comprises a hot-blast stove main body internally provided with a spark detector, and the other side of the hot-blast stove main body is provided with a heat exchange part; the top of the heat exchange part communicates with a hot air opening, a hot air exhaust pipe is installed on the hot air opening, a filter sleeve is installed on the hot air exhaust pipe and comprises a multi-layer umbrella cone structure, a suction structure is arranged on the side of the multi-layer umbrella cone structure, a refraction crystal for reflecting light is arranged on the suction structure, and an optical detector is arranged below the hot air exhaust pipe. The optical detector is connected with the spark detector. Sparks and solid particles are guided and concentrated in a specific area through the filter sleeve installed on the hot air exhaust pipe, the spark detection efficiency and accuracy are greatly improved in cooperation with the optical detector, the sparks can be extinguished, and the safety during agricultural product processing is improved.

Description

Technical Field

[0001] This utility model relates to the field of hot blast stove technology, and more specifically, to a hot blast stove device with spark detection function. Background Technology

[0002] In the field of agricultural product processing, hot air furnaces provide the necessary hot air for the processing. However, in the processing stage, when using fuels (such as coal or biomass pellets) in direct combustion hot air furnaces or biomass-fueled hot air furnaces, if the fuel quality is poor, contains many impurities, or is not sufficiently dried, sparks may be generated during combustion. If these sparks from the hot air furnace mix with the hot air and enter the processing stage, they may damage the agricultural products. Therefore, we propose a hot air furnace device with spark detection functionality. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a hot air furnace device with spark detection function to solve the technical problem that the sparks generated by the current hot air furnace can easily damage agricultural products.

[0004] To solve the above technical problems, the present invention provides the following technical solution: a hot air furnace device with spark detection function, comprising a hot air furnace body with a spark detector installed inside, a combustion chamber provided on one side of the hot air furnace body, a heat exchange section provided on the other side of the hot air furnace body, a hot air outlet connected to the top of the heat exchange section, a hot air exhaust pipe installed on the hot air outlet, and a filter sleeve installed on the hot air exhaust pipe;

[0005] The filter sleeve includes a multi-layered umbrella cone structure, which is a cone-shaped structure with an increasing diameter. The multi-layered umbrella cone structure is composed of multiple umbrella cone seats with different diameters. A central rod is connected between the umbrella cone seats. Multiple ventilation openings are provided in the central area of ​​adjacent umbrella cone seats with smaller diameters. An attraction structure is provided on the side of the multi-layered umbrella cone structure. A refractive crystal for reflecting light is provided on the attraction structure. An optical detector fixed to the heat exhaust duct is provided below the heat exhaust duct. The optical detector is connected to a spark detector.

[0006] Preferably, the filter sleeve further includes an extension sleeve, which has a trumpet-shaped structure. The outer arc surface of the extension sleeve is set as a flow guiding arc surface. The extension sleeve is fixed to the edge of the topmost umbrella cone seat. Multiple through slots are opened on the edge of the extension sleeve, and metal filter screens are arranged in the through slots.

[0007] Preferably, the flared end of the extension sleeve is fitted with a fixing sleeve, and the fixing sleeve is fixed to the heat exhaust air pipe by bolts.

[0008] Preferably, the attraction structure includes multiple main electrodes, which are evenly distributed in a ring array on the cross-section of the heat exhaust duct. The main electrodes are made of a high-temperature resistant and electrically conductive metal material and have a needle-like structure. An insulating sleeve is fixed to the outer periphery of the main electrodes and is fixed to the side wall of the heat exhaust duct. The insulating sleeve is made of a high-temperature resistant and non-conductive material.

[0009] Preferably, the attraction structure further includes a collecting electrode, which is a ring structure. An insulating base is fixed to the outer periphery of the collecting electrode. The collecting electrode is located 5-10 cm downstream of the main electrode, and the surface of the collecting electrode is smoothed.

[0010] Preferably, there are multiple refractive crystals, which are evenly distributed on the inner wall of the collecting electrode and the outer arc surface of the extension sleeve, forming a repeated refraction track for light to pass through the optical detector.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model uses a filter sleeve installed on the exhaust duct, with a multi-layered umbrella cone structure and an extended sleeve, to guide and concentrate sparks and solid particles in a specific area. Combined with an optical detector, this significantly improves the efficiency and accuracy of spark detection. The refractive crystal in the attraction structure creates a trajectory for repeated light refraction, allowing the optical detector to more sensitively sense sparks and issue timely alarms. This provides a reliable guarantee for the safety of agricultural product processing and solves the problem that sparks generated by hot air furnaces can easily damage agricultural products.

[0013] 2. This utility model also uses a metal filter screen in the filter sleeve to directly block sparks and particulate impurities. The attraction structure uses a strong electric field formed by the main electrode and the collecting electrode to cause the sparks to consume energy, decrease in temperature and be extinguished during their movement toward the collecting electrode. Even if a small amount of sparks leak out, they will not damage agricultural products, greatly reducing the risk of sparks damaging agricultural products and further solving the problem that sparks generated by hot air furnaces can easily damage agricultural products.

[0014] The main body of the hot air furnace adopts the existing hot air furnace, and an innovative spark detection and interception device is added only to the hot air inlet, which reduces the equipment modification cost, improves the feasibility and practicality of the solution, and facilitates its promotion and application in the agricultural product processing industry. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a half-sectional structural diagram of the heat exhaust duct in this utility model;

[0017] Figure 3This is a half-sectional schematic diagram of the multi-layer umbrella cone structure in this utility model;

[0018] Figure 4 This is a schematic diagram of the multi-layer umbrella cone structure in this utility model;

[0019] Figure 5 This is a schematic diagram of the attraction structure in this utility model.

[0020] The following are the labels in the diagram: 1. Hot air furnace body; 2. Combustion chamber; 3. Heat exchange section; 4. Hot air outlet; 5. Exhaust air duct; 6. Suction structure; 7. Optical detector; 51. Multi-layer umbrella cone structure; 511. Umbrella cone seat; 512. Central rod; 513. Ventilation port; 502. Extension sleeve; 503. Fixing sleeve; 601. Main electrode; 602. Electrical isolation sleeve; 603. Collecting electrode; 604. Electrical isolation seat; 605. Refractive crystal. Detailed Implementation

[0021] like Figures 1 to 5 As shown, this utility model relates to a hot air furnace device with spark detection function. The device is based on the hot air furnace body 1. The hot air furnace body 1 adopts the existing mature hot air furnace design. It has a complete combustion and heat exchange system inside. A combustion chamber 2 is provided on one side of the hot air furnace body 1. The combustion chamber 2 provides space for fuel combustion. The fuel is fully burned in it and releases a large amount of heat energy. A heat exchange section 3 is provided on the other side of the hot air furnace body 1. The heat exchange section 3 transfers the heat energy generated by combustion to the air through the heat exchange principle to generate hot air. The top of the heat exchange section 3 is connected to a hot air outlet 4. The hot air outlet 4 serves as the output channel for hot air, which delivers the heated air to the agricultural product processing stage.

[0022] To effectively detect sparks in the hot air, this device has an exhaust duct 5 installed on the hot air outlet 4. The exhaust duct 5 is made of high-temperature and corrosion-resistant metal to ensure long-term stable operation in a high-temperature hot air environment. Below the exhaust duct 5, an optical detector 7 is fixed by a specific mounting bracket. The optical detector 7 uses a high-sensitivity optical sensor that can quickly and accurately capture the light signal emitted by the spark. The optical detector 7 is connected to the spark detector installed inside the hot air furnace body 1. When the optical detector 7 detects a spark signal, it will transmit the signal to the spark detector in a timely manner for further analysis and processing.

[0023] A filter sleeve is installed on the heat exhaust duct 5. As one of the core components of this device, the filter sleeve plays a key role in the process of spark detection and interception. The filter sleeve consists of a multi-layer umbrella cone structure 51 and an extension sleeve 502.

[0024] The multi-layered umbrella cone structure 51 is a cone-shaped structure with an increasing diameter, composed of multiple umbrella cone seats 511 with different diameters. The umbrella cone seats 511 are made of high-temperature resistant and high-strength metal materials to ensure that they will not deform or be damaged under the impact of high-temperature hot air. The umbrella cone seats 511 are centrally connected by a central rod 512, which serves to support and fix the umbrella cone seats 511. Each umbrella cone seat 511 has multiple ventilation openings 513 in the central area within the range of adjacent smaller diameter umbrella cone seats 511. Hot air is supplied through the ventilation openings 513. Since the ventilation openings 513 are blocked by the umbrella cone seats 511 below, when hot air enters the exhaust pipe 5 from the hot air inlet 4, it will first collide with the solid arc surface of the umbrella cone seat 511. During the collision, the flow direction of the hot air changes, and solid particles and sparks move to the side under the drive of the airflow, thus playing a guiding role.

[0025] The extension sleeve 502 has a trumpet-shaped structure with an outer arc surface designed as a guide arc surface. The extension sleeve 502 is made of a high-temperature resistant and flexible material, which can withstand the impact of high-temperature hot air and can make a certain degree of adaptive adjustment according to changes in airflow. The extension sleeve 502 is fixed to the edge of the top umbrella cone seat 511 by welding or other reliable connection methods. The edge of the extension sleeve 502 has multiple through slots, and a metal filter screen is installed in the through slots. The metal filter screen is made of high-precision metal wire, and its mesh size is carefully designed to effectively block sparks and fix particulate impurities. In order to achieve fixation, a fixing sleeve 503 is installed at the flared end of the extension sleeve 502. The fixing sleeve 503 is made of high-strength metal material and is fixed to the heat exhaust pipe 5 by bolts to ensure that the filter sleeve is firmly installed.

[0026] Working principle: When hot air carrying sparks and solid particles enters the exhaust duct 5 from the hot air inlet 4, it first collides with the solid arc surface of the umbrella cone seat 511 of the multi-layer umbrella cone structure 51, causing the solid particles and sparks to move to the side. Subsequently, guided by the guide arc surface of the extension sleeve 502, the sparks and solid particles are concentrated in the edge gap between the extension sleeve 502 and the fixed sleeve 503. The optical detector 7 is installed in the corresponding position, which can accurately detect this area, thereby greatly improving the spark detection efficiency. At the same time, the metal filter in the edge slot of the extension sleeve 502 effectively blocks particulate impurities and sparks, preventing them from entering the agricultural product processing stage, and providing reliable protection for agricultural product processing.

[0027] To further enhance the protection effect, an attraction structure 6 is provided on the side of the multi-layer umbrella cone structure 51. The attraction structure 6 includes multiple main electrodes 601, which are evenly distributed in a ring array on the cross-section of the exhaust duct 5. The main electrodes 601 are made of a high-temperature resistant and highly conductive metal material and have a needle-like structure. The main electrodes 601 are connected to an external high-voltage generator, which is installed in a control cabinet near the hot air furnace and connected to the main electrodes 601 through an insulated cable to provide the required high voltage to the main electrodes 601. An insulating sleeve 602 is fixed to the outer periphery of the main electrodes 601 and is fixed to the side wall of the exhaust duct 5. 2 is made of high temperature resistant, non-conductive material. The attraction structure 6 also includes a collecting electrode 603. The collecting electrode 603 has a ring structure. An electric isolation base 604 is fixed on the outer periphery of the collecting electrode 603. The collecting electrode 603 is located 5-10 cm downstream of the main electrode 601. The surface of the collecting electrode 603 is smoothed. A refractive crystal 605 that reflects light is provided on the attraction structure 6. The refractive crystal 605 has a multi-faceted rhomboid structure. Multiple refractive crystals 605 are provided. The refractive crystals 605 are evenly distributed on the inner side wall of the collecting electrode 603 and the outer arc surface of the extension sleeve 502 and form a repeated refraction track for light to pass through the optical detector 7.

[0028] Working principle: The high-voltage power supply system provides high voltage to the main electrode 601, creating a strong electric field around the main electrode 601. When hot air carrying sparks passes through the area of ​​the main electrode 601, the gas molecules in the hot air flow are ionized under the action of the strong electric field, generating a large number of ions and electrons. The sparks, carrying a certain charge, move towards the collecting electrode 603 under the action of the electric field. During their movement towards the collecting electrode 603, the sparks collide with the surrounding ions and electrons, gradually consuming energy and lowering the temperature. When the sparks reach the surface of the collecting electrode 603, their energy has been greatly reduced, making it impossible to maintain combustion. They eventually extinguish and are adsorbed onto the collecting electrode 603. A small amount of sparks may leak out, but since they are extinguished, they will not damage the agricultural products. Furthermore, with the repeated refraction tracks between the refractive crystals 605, the optical detector 7 can be sensed through multiple refractions and issue an alarm, further improving the safety of agricultural product processing.

[0029] To facilitate the cleaning of particulate solid impurities, a slag discharge valve can be provided at the bottom of the fixing sleeve 503. By opening the slag discharge valve, the internal impurities can be cleaned.

[0030] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A hot blast stove device with spark detection function, characterized in that, The hot air furnace body (1) includes a spark detector installed inside. A combustion chamber (2) is provided on one side of the hot air furnace body (1), and a heat exchange section (3) is provided on the other side of the hot air furnace body (1). A hot air outlet (4) is connected to the top of the heat exchange section (3). A heat exhaust pipe (5) is installed on the hot air outlet (4), and a filter sleeve is installed on the heat exhaust pipe (5). The filter sleeve includes a multi-layer umbrella cone structure (51), which is a cone structure with an increasing diameter. The multi-layer umbrella cone structure (51) is composed of multiple umbrella cone seats (511) with different diameters. A central rod (512) is connected between the umbrella cone seats (511). Multiple ventilation openings (513) are provided in the central area of ​​the umbrella cone seats (511) within the range of adjacent smaller diameter umbrella cone seats (511). An attraction structure (6) is provided on the side of the multi-layer umbrella cone structure (51). A refractive crystal (605) for reflecting light is provided on the attraction structure (6). An optical detector (7) is fixed to the heat exhaust duct (5) below the heat exhaust duct (5). The optical detector (7) is connected to the spark detector.

2. A hot blast stove device with spark detection function according to claim 1, characterized in that, The filter sleeve also includes an extension sleeve (502), which has a trumpet-shaped structure. The outer arc surface of the extension sleeve (502) is set as a flow guiding arc surface. The extension sleeve (502) is fixed to the edge of the topmost umbrella cone seat (511). Multiple through slots are opened on the edge of the extension sleeve (502), and metal filter screens are arranged in the through slots.

3. A hot blast stove device with spark detection function according to claim 2, characterized in that, The flared end of the extension sleeve (502) is fitted with a fixing sleeve (503), which is fixed to the heat exhaust pipe (5) by bolts.

4. A hot blast stove device with spark detection function according to claim 3, characterized in that, The attraction structure (6) includes multiple main electrodes (601) connected to an external high-voltage generator. The multiple main electrodes (601) are evenly distributed in a ring array on the cross-section of the heat exhaust duct (5). The main electrodes (601) are made of a metal material with high temperature resistance and good conductivity and have a needle-like structure. An insulating sleeve (602) is fixed to the outer periphery of the main electrodes (601) and fixed to the side wall of the heat exhaust duct (5). The insulating sleeve (602) is made of a high temperature resistant and non-conductive material.

5. A hot blast stove device with spark detection function according to claim 4, characterized in that, The attraction structure (6) also includes a collecting electrode (603), which is a ring structure. An insulating base (604) is fixed on the outer periphery of the collecting electrode (603). The collecting electrode (603) is located 5-10 cm downstream of the main electrode (601). The surface of the collecting electrode (603) is smoothed.

6. A hot blast stove device with spark detection function according to claim 5, characterized in that, The refractive crystals (605) are arranged in multiples and are evenly distributed on the inner sidewall of the collecting electrode (603) and the outer arc surface of the extension sleeve (502) to form a repeated refraction track for light to pass through the optical detector (7).

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