Spark detection alarm for agricultural drying

Abstract

The utility model discloses a spark detection alarm for agricultural drying, relates to the technical field of spark detection alarms, and aims to solve the technical problem, the spark detection alarm comprises a spark detector body and a protection mechanism installed on the spark detector body, the spark detector body comprises a fixed cylinder located at the front position of the spark detector body, a detection probe is arranged at the front end of the fixed cylinder, the protection mechanism comprises an air bellow, a sleeve shaft and a rotating ring, the air bellow is installed on the fixed cylinder in a sleeving mode, the dustproof net and the air inlet are arranged in an arc shape in the long axis direction, and the sleeve shaft and the rotating ring are installed on the outer surface of the fixed cylinder through shaft rotating bearings; and main air pipes are mounted at the front end of the rotating ring in an array manner. The air blowing device has the advantages that air is blown out through the main air pipe with the spiral gradually-changing pipe diameter and the arc-shaped air blowing pipe in the opposite direction, the air flow is accelerated through the Venturi effect, the rotating ring is driven to rotate by 360 degrees for blowing by means of the counter-acting force, probe dust can be removed, air curtain protection is formed, and the detection precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of spark detection alarm technology, and more specifically, to a spark detection alarm for agricultural drying. Background Technology

[0002] Spark detectors are safety devices used to monitor and warn of potential fire risks in flammable environments. They are widely used in industries such as chemical, warehousing, textile, and wood processing. Their core principle involves using highly sensitive infrared or ultraviolet sensors to capture high-temperature luminescent particles such as sparks and embers in the air in real time. Once an abnormal heat source is detected, an audible and visual alarm is immediately triggered, and automatic fire extinguishing devices and ventilation fans can be activated in conjunction with the system to achieve an integrated emergency response of "detection, alarm, and response."

[0003] During the drying process of some agricultural products, fine starch dust is generated due to particle friction and skin shedding. This dust requires monitoring with a spark detector. Currently, the spark detectors installed in the drying chambers of agricultural products are subject to dust accumulation. Since the detectors work by capturing the light signal from sparks, the dust on the probe surface acts as a physical obstruction, like a "dust filter" on a lens. This prevents the light from the actual spark from being effectively transmitted to the sensor chip, thus affecting the accuracy of spark detection. Therefore, we propose a spark detector for agricultural drying. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a spark detector alarm for agricultural drying. This solves the technical problem that dust adheres to the probe of the current spark detector alarm, causing the light generated by the actual spark to be unable to be effectively transmitted to the sensor chip, thus affecting the accuracy of spark detection.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a spark detector alarm for agricultural drying, comprising a spark detector body and a protective mechanism installed on the spark detector body. The spark detector body includes a fixed cylinder located at the front of the spark detector body, and a detection probe is provided at the front end of the fixed cylinder. The protective mechanism includes a bellows, a sleeve shaft, and a rotating ring. The bellows is sleeved and installed on the fixed cylinder, and an air inlet is opened at the rear end of the bellows. A dustproof net is provided inside the air inlet. Both the dustproof net and the air inlet are arc-shaped along their long axis. The sleeve shaft and the rotating ring are rotatably mounted on the outer surface of the fixed cylinder. Wind turbine blades are arrayed on the outer surface of the sleeve shaft, and a main air duct is arrayed at the front end of the rotating ring.

[0006] Preferably, the bellows has a circular opening, which forms a ring structure. The circular opening at the front end of the bellows is larger than the circular opening at the rear end of the bellows, and the circular opening of the bellows and the fixed cylinder form a ring-shaped receiving opening.

[0007] Preferably, both the sleeve shaft and the wind turbine blades are located inside the wind box, and the outer surface of the sleeve shaft has meshing teeth. The meshing teeth are located on one side of the wind turbine blades, and a plurality of meshing teeth are provided, which are distributed in a ring array.

[0008] Preferably, a rotating shaft is rotatably mounted on the inner wall of the rear end of the air box at a position symmetrical to the dustproof net. A motor is provided at the rear end of the air box, the output shaft of the motor is connected to the axis of the rotating shaft, and a gear is provided at the end of the rotating shaft, which is meshed with a meshing gear for transmission.

[0009] Preferably, the rotating ring is located inside the receiving port, the outer surface of the rotating ring is close to the inner wall of the receiving port of the air box, and the beginning of the main air duct passes through the rotating ring and communicates with the air box.

[0010] Preferably, the main air duct is spirally arranged along its long axis, the spiral degree of the main air duct is one-fifth of that of a complete spiral, the diameter of the main air duct gradually decreases along its long axis, and air blowers are equidistantly arranged on the main air duct, the air blowers are arc-shaped along their long axis, and the end of the air blower faces the opposite direction to the spiral direction of the main air duct.

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

[0012] 1. This utility model, through the design of wind turbine blades and main air duct structure, uses a motor to drive the shaft and wind turbine blades to rotate, creating negative pressure that forces external air to enter the air box after being filtered by an arc-shaped dustproof net. The air is then blown out by the spirally arranged main air duct and the blower pipe with gradually changing diameter. Utilizing the Venturi effect to accelerate the airflow, combined with the reaction force of the blower pipe to drive the rotating ring to rotate 360° and blow cleanly, it can not only effectively remove the dust attached to the detection probe, but also form a spiral air curtain protective barrier around the probe to prevent dust from blocking the transmission of light signals. This significantly improves the accuracy and reliability of spark detection, reduces the risk of missed detection of fire hazards in agricultural drying operations, and solves the problem that dust adhering to the probe of the current spark detection alarm causes the light generated by the real spark to be unable to be effectively transmitted to the sensor chip, thus affecting the accuracy of spark detection.

[0013] 2. This utility model also features a specially designed air-blowing pipe structure. The air-blowing pipe is arc-shaped along its long axis, with its end facing the opposite direction to the spiral direction of the main air pipe. When air is blown out of the air-blowing pipe, the reaction force generated by the airflow will push the main air pipe. Because the rotating ring is mounted on the outer surface of the fixed cylinder via bearings, it will rotate around the fixed cylinder under the reaction force. This airflow-driven rotating ring design eliminates the need for an additional rotation drive device, reducing the number of equipment components and energy consumption, and lowering operating costs. Furthermore, the rotating ring drives the air-blowing pipe to rotate and blow in a spiral trajectory, ensuring that the airflow covers all areas around and along the axis of the detection probe. This effectively prevents dust from adhering to the detection probe, ensuring that the spark detector can promptly capture light signals in the complex environment of agricultural drying, achieving rapid and accurate alarms and providing more comprehensive protection for the safety of drying operations. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present utility model;

[0015] Figure 2 This is a front view structural diagram of the present invention;

[0016] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 4 This is a schematic diagram of the spark detector body structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the protective mechanism structure of this utility model;

[0019] Figure 6 This is a cross-sectional structural diagram of the protective mechanism of this utility model;

[0020] Figure 7 This is a schematic diagram of the duct structure of this utility model;

[0021] Figure 8 This is a schematic diagram of the sleeve shaft structure of this utility model.

[0022] The following are the labels in the diagram: 101, Spark detector body; 102, Fixed cylinder; 200, Protective mechanism; 201, Air box; 202, Dustproof net; 203, Receiving port; 204, Sleeve shaft; 205, Wind turbine blade; 206, Meshing teeth; 207, Gear; 208, Rotating ring; 209, Main air duct; 210, Air blowing duct; 211, Motor. Detailed Implementation

[0023] like Figures 1 to 8As shown, this utility model relates to a spark detector alarm for agricultural drying, including a spark detector body 101 and a protective mechanism 200 installed on the spark detector body 101. The spark detector body 101 includes a fixed cylinder 102 located at the front of the spark detector body 101, and a detection probe is provided at the front end of the fixed cylinder 102. The protective mechanism 200 includes a wind box 201, a sleeve shaft 204, and a rotating ring 208. The wind box 201 is sleeved and installed on the fixed cylinder 102. An air inlet is opened at the rear end of the wind box 201, and a dustproof net 202 is provided inside the air inlet. The dustproof net 202 and the air inlet are both arc-shaped along the long axis. The sleeve shaft 204 and the rotating ring 208 are both mounted on the outer surface of the fixed cylinder 102 by a shaft rotatable bearing. Wind turbine blades 205 are arrayed on the outer surface of the sleeve shaft 204, and a main air duct 209 is arrayed at the front end of the rotating ring 208. This invention uses a motor 211 to drive the wind turbine blades 205 to rotate, creating negative pressure suction. After being filtered by a dustproof net 202, the air is blown out through a spirally tapered main duct 209 and a counter-directional arc-shaped blowing duct 210. The airflow is accelerated by the Venturi effect and driven by the reaction force to rotate the rotating ring 208 360 degrees to clean the probe. This removes dust from the probe and forms an air curtain for protection, improving detection accuracy. Furthermore, no additional drive is required, reducing costs and energy consumption.

[0024] Specifically, the bellows 201 has a circular opening, forming a ring structure. The circular opening at the front end of the bellows 201 is larger than the circular opening at the rear end. The circular opening of the bellows 201 and the fixed cylinder 102 form a ring-shaped receiving opening 203. The receiving opening 203 is designed to accommodate the rotating ring 208. When the rotating ring 208 rotates, the receiving opening 203 can be closed, thus achieving the purpose of closing the bellows 201 and allowing the rotating ring 208 to rotate.

[0025] Furthermore, both the sleeve shaft 204 and the wind turbine blade 205 are located inside the wind box 201. The outer surface of the sleeve shaft 204 has meshing teeth 206, which are located on one side of the wind turbine blade 205. Several meshing teeth 206 are arranged in a circular array. The meshing teeth 206 are used to drive the sleeve shaft 204 to rotate. When the sleeve shaft 204 rotates, it causes the wind turbine blade 205 to move, thereby blowing air.

[0026] It is worth noting that a rotating shaft is rotatably mounted on the inner wall of the rear end of the bellows 201 at a position symmetrical to the dustproof net 202. A motor 211 is located at the rear end of the bellows 201, and the output shaft of the motor 211 is connected to the axis of the rotating shaft. A gear 207 is located at the end of the rotating shaft, and the gear 207 meshes with the meshing gear 206 for transmission. When the motor 211 operates, it can rotate the gear 207. Because the meshing gear 206 meshes with the gear 207, it can drive the sleeve shaft 204 to rotate, thereby rotating the wind turbine blades 205. When the wind turbine blades 205 rotate, they can allow outside air to enter the bellows 201 through the dustproof net 202, and then blow the air out through the main air duct 209.

[0027] It is worth noting that the rotating ring 208 is located inside the receiving port 203, and the outer surface of the rotating ring 208 is close to the inner wall of the receiving port 203 of the bellows 201. The beginning of the main air duct 209 passes through the rotating ring 208 and is connected to the bellows 201. Because the main air duct 209 is connected to the bellows 201, air inside the bellows 201 can be blown out from the main air duct 209.

[0028] It is worth noting that the main air duct 209 is spirally arranged along its long axis, with a spiral degree of one-fifth that of a complete spiral. The diameter of the main air duct 209 gradually decreases along its long axis. Air blowing pipes 210 are equidistantly arranged on the main air duct 209, and these air blowing pipes 210 are arc-shaped along their long axis. The end of the air blowing pipe 210 faces the opposite direction of the spiral of the main air duct 209. During air blowing, air from the air box 201 enters the main air duct 209 from its beginning and is blown out through the air blowing pipes 210. The gradually decreasing diameter of the main air duct 209 utilizes the Venturi effect to accelerate the airflow, resulting in a faster airflow speed. Furthermore, the spiral arrangement of the main air duct 209 creates a spiral-like air curtain effect, preventing dust from adhering to the detection probe inside the drying chamber. Finally, the direction of the end of the air blowing pipe 210 opposite to the spiral direction of the main air duct 209 further enhances its effectiveness. Conversely, and with the rotating ring 208 being rotatably mounted, the reaction force of the airflow blown out by the blower 210 can push the main air duct 209, thereby causing the rotating ring 208 to rotate. Without an additional power source, 360° rotational blowing is achieved by using airflow to push the main air duct 209. The blowing path extends in a spiral shape, covering all areas around and along the axis of the probe, avoiding the blind spot problem of traditional fixed blowing. It can effectively blow away the dust attached to the detection probe, avoiding affecting the detection accuracy of the spark detector alarm and improving the safety of the agricultural product drying process.

[0029] Working Principle: This embodiment provides a spark detector alarm for agricultural drying. In use, the spark detector alarm is installed inside the drying chamber of the drying equipment, with the detection probe facing the agricultural product. During operation, the motor 211 is first started. The output shaft of the motor 211 drives the rotating shaft to rotate, and the gear 207 at the end of the rotating shaft rotates accordingly. Because the gear 207 meshes with the meshing teeth 206 on the outer surface of the sleeve shaft 204, the rotation of the gear 207 drives the sleeve shaft 204 to rotate. When the sleeve shaft 204 rotates, the wind turbine blades 205 arrayed on its outer surface also rotate together. The wind turbine blades 205 rotate... During the process, a negative pressure is generated inside the air box 201. Under the action of the negative pressure, external air enters the air box 201 through the dustproof net 202 at the rear air inlet. The dustproof net 202 is arc-shaped and can filter and block dust from entering the air box 201, preventing it from entering the air box 201 and affecting the operation of the equipment. The air entering the air box 201 is blown out through the main air duct 209 on the rotating ring 208 by the push of the wind turbine blades 205. The beginning of the main air duct 209 passes through the rotating ring 208 and is connected to the air box 201. The main air duct 209 is spirally arranged along the long axis, with a spiral degree of one-fifth of a complete spiral. The diameter of the duct gradually increases. As the diameter of the main duct 209 decreases, the airflow velocity gradually increases according to the Venturi effect. Simultaneously, the equidistant blower pipes 210 on the main duct 209 are arc-shaped along their long axis, with their ends pointing in the opposite direction to the spiral of the main duct 209. When air is blown out from the blower pipes 210, the reaction force generated by the outflow pushes the main duct 209. Because the rotating ring 208 is rotatably mounted on the outer surface of the fixed cylinder 102 via bearings, under the reaction force, the rotating ring 208 will rotate around the fixed cylinder 102. During the rotation of the rotating ring 208, the blower pipes 210... The blown airflow forms a spiral-like air curtain effect. On the one hand, it creates a protective barrier around the detection probe, preventing dust from the drying chamber from adhering to the probe. On the other hand, the rotating blowing allows the airflow to cover all areas around and along the axis of the detection probe, blowing away the dust already attached to it. This prevents dust from physically obstructing the detection probe's ability to capture spark light signals, thus ensuring the detection accuracy of the spark detector alarm. This ensures that if a spark occurs during the drying process of agricultural products, the detection probe can capture the light signal in a timely and accurate manner, triggering the alarm device and ensuring the safe operation of the drying process.

[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 spark detector alarm for agricultural drying, characterized in that, The device includes a spark detector body (101) and a protective mechanism (200) mounted on the spark detector body (101). The spark detector body (101) includes a fixed cylinder (102) located at the front of the spark detector body (101). A detection probe is provided at the front end of the fixed cylinder (102). The protective mechanism (200) includes a bellows (201), a sleeve shaft (204), and a rotating ring (208). The bellows (201) is sleeved and mounted on the fixed cylinder (101). On 02), the rear end of the air box (201) is provided with an air inlet, and a dustproof net (202) is provided inside the air inlet. The dustproof net (202) and the air inlet are both arc-shaped along the long axis. The sleeve shaft (204) and the rotating ring (208) are both mounted on the outer surface of the fixed cylinder (102) by a shaft rotatable bearing. The outer surface of the sleeve shaft (204) is provided with wind turbine blades (205), and the front end of the rotating ring (208) is provided with a main air duct (209).

2. The spark detector alarm for agricultural drying according to claim 1, characterized in that, The bellows (201) has a circular opening, which forms a ring structure for the bellows (201). The circular opening at the front end of the bellows (201) is larger than the circular opening at the rear end of the bellows (201). The circular opening of the bellows (201) and the fixed cylinder (102) form a ring-shaped receiving opening (203).

3. The spark detector alarm for agricultural drying according to claim 2, characterized in that, The sleeve shaft (204) and the wind turbine blade (205) are both located inside the wind box (201). The outer surface of the sleeve shaft (204) has meshing teeth (206). The meshing teeth (206) are located on one side of the wind turbine blade (205). A plurality of meshing teeth (206) are provided, and the plurality of meshing teeth (206) are distributed in a ring array.

4. The spark detector alarm for agricultural drying according to claim 3, characterized in that, The inner wall of the rear end of the wind box (201) is rotatably mounted with a rotating shaft at a position symmetrical to the dustproof net (202). A motor (211) is provided at the rear end of the wind box (201). The output shaft of the motor (211) is connected to the axis of the rotating shaft. A gear (207) is provided at the end of the rotating shaft. The gear (207) is meshed with a meshing tooth (206) for transmission.

5. The spark detector alarm for agricultural drying according to claim 4, characterized in that, The rotating ring (208) is located inside the receiving port (203), and the outer surface of the rotating ring (208) is close to the inner wall of the receiving port (203) of the wind box (201). The beginning of the main air pipe (209) passes through the rotating ring (208) and is connected to the wind box (201).

6. The spark detector alarm for agricultural drying according to claim 5, characterized in that, The main air duct (209) is spirally arranged along its long axis. The spiral degree of the main air duct (209) is one-fifth of that of a complete spiral. The diameter of the main air duct (209) gradually decreases along its long axis. Air blowers (210) are equidistantly arranged on the main air duct (209). The air blowers (210) are arc-shaped along their long axis. The end of the air blower (210) faces the opposite direction to the spiral direction of the main air duct (209).

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