Spark detection alarm for agricultural product drying and capable of reducing interference

Abstract

The utility model discloses an agricultural product drying spark detection alarm capable of reducing interference, relates to the technical field of spark detection alarms, and aims to solve the problems that the anti-interference performance of a current spark detection alarm is insufficient, a probe of the spark detection alarm is arranged at the front end, dust adhesion interference, electromagnetic interference and light interference can affect monitoring of the probe, and the detection efficiency is high. The anti-interference spark detector comprises a spark detector body and an anti-interference mechanism installed on the spark detector body, the anti-interference mechanism comprises an anti-interference housing fixed on the outer surface of a fixed cylinder, the anti-interference housing comprises an outer shell and an inner shell, and the outer shell and the inner shell are fixed on the outer surface of the fixed cylinder. And a reducing part and a mounting part are arranged on the inner wall of the inner shell. The spark detection alarm has the advantages that the interference of the outside to the spark detection alarm can be effectively reduced, the spark detection alarm can accurately capture spark signals, and the anti-interference capability and the safety of the spark detection alarm in agricultural product drying scenes can be comprehensively 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 product drying that reduces interference. Background Technology

[0002] Spark detectors are safety devices used to monitor and warn of potential fire risks, and are widely used in industrial production, warehousing and logistics. Their core function is to use highly sensitive sensors to capture abnormal signals such as sparks and high temperatures in the environment in real time. Once a dangerous heat source is detected, the system immediately issues an audible and visual alarm and triggers external equipment (such as sprinkler systems or fan shutdowns) to block the fire's propagation path.

[0003] Spark detectors often lack sufficient anti-interference capabilities during use. For example, dust generated during agricultural product drying, electromagnetic interference from motors, frequency converters, and other high-voltage equipment, as well as light interference from lighting, can all cause problems. Since the spark detector's probe is located at the front end, dust adhesion, electromagnetic interference, and light interference can affect its monitoring, potentially triggering false alarms or masking the actual spark signal, thus compromising safety. Therefore, we propose a spark detector for agricultural product drying that reduces interference. 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 product drying that reduces interference. This addresses the technical problem that current spark detector alarms have insufficient anti-interference performance, and that the probe of the spark detector alarm is located at the front end. Dust adhesion interference, electromagnetic interference, and light interference can affect the probe's monitoring, which may trigger false alarms or mask the real spark signal, thus compromising safety.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a spark detector alarm for agricultural product drying with reduced interference, comprising a spark detector body and an anti-interference mechanism installed on the spark detector body. The spark detector body includes a fixed cylinder located at the front, and a probe is provided at the front end of the fixed cylinder. The anti-interference mechanism includes an anti-interference cover fixed to the outer surface of the fixed cylinder. The anti-interference cover includes an outer shell and an inner shell. The inner wall of the inner shell is provided with a variable diameter part and a mounting part. The inner wall of the inner shell is provided with a fixed plate arrayed at the mounting part. Springs are symmetrically installed on the fixed plate, and the springs are connected to the inner wall of the inner shell.

[0006] Preferably, the fixing plate is arc-shaped along the short axis, and the fixing plate includes a positioning part and a guide part, wherein the guide part is arc-shaped and curved outward along the long axis.

[0007] Preferably, the inner wall of the positioning part is provided with a positioning protrusion, and both ends of the positioning protrusion are arc-shaped. The outer surface of the fixing cylinder is provided with positioning grooves, and the positioning protrusion is engaged in the positioning grooves.

[0008] Preferably, the anti-interference cover is made of metal, an air cavity is formed between the outer shell and the inner shell, an air inlet pipe communicating with the air cavity is provided at the rear end of the anti-interference cover, and a sloping opening is provided at the front end of the anti-interference cover, with an inclined air outlet hole on the sloping opening.

[0009] Preferably, the inner wall of the outer shell and the outer surface of the inner shell are provided with a plurality of recesses, the recesses are V-shaped, and a reflective area is formed between the recesses.

[0010] Preferably, the variable diameter section is arranged with two bends in the direction of the inclined opening, the diameter of the variable diameter section is arranged to gradually increase from small to large, and the variable diameter section is in the shape of a trumpet.

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

[0012] 1. This utility model, through the design of an anti-interference housing structure, utilizes a metal anti-interference housing with a double-layer structure and an air cavity to effectively shield electromagnetic interference. The V-shaped recesses on the outer and inner shells form a reflective zone, weakening the electromagnetic signal through multiple reflections and greatly reducing electromagnetic interference to the probe. Simultaneously, the horn-shaped, double-bent design of the variable-diameter section blocks external light, avoiding stray light interference and ensuring the probe accurately captures spark signals, reducing false alarms and improving the accuracy and reliability of spark detection. Furthermore, air is supplied to the air cavity through the air inlet pipe and discharged through the air outlet to form a conical air curtain, effectively blocking dust from entering and preventing dust from adhering to the probe and affecting monitoring, ensuring probe cleanliness, and maintaining stable operation. This addresses the problem of insufficient anti-interference performance in current spark detectors, where the probe is located at the front end, and dust, electromagnetic, and light interference can affect probe monitoring, potentially triggering false alarms or masking the true spark signal, thus compromising safety.

[0013] 2. This utility model also features a fixed plate structure with an outwardly curved guide portion that provides excellent guidance during the installation of the anti-interference cover, reducing installation difficulty and improving efficiency. The snap-fit ​​between the positioning protrusion and the positioning groove ensures precise positioning of the anti-interference cover, guaranteeing a secure installation and preventing rotation or movement during use. Furthermore, the curved design at both ends of the positioning protrusion facilitates disassembly by applying pulling force to release it from the positioning groove, making disassembly and maintenance of the anti-interference cover easier. Attached Figure Description

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

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the fixing plate structure of this utility model;

[0017] Figure 4 This is a cross-sectional structural diagram of the anti-interference cover of this utility model;

[0018] Figure 5 This is a schematic diagram of the spark detector body structure of this utility model;

[0019] Figure 6 This is a frontal cross-sectional view of the protective cover of this utility model.

[0020] The following are the labels in the diagram: 101, Spark detector body; 102, Fixing cylinder; 1021, Positioning groove; 103, Probe; 200, Anti-interference mechanism; 201, Anti-interference cover; 202, Outer shell; 2021, Variable diameter section; 2022, Mounting section; 203, Inner shell; 204, sloping opening; 2041, Air outlet; 205, Air cavity; 2051, Reflection area; 206, Air inlet pipe; 207, Recessed section; 208, Fixing plate; 2081, Positioning section; 2082, Guide section; 2083, Positioning protrusion; 209, Spring. Detailed Implementation

[0021] like Figures 1 to 6 As shown, this utility model relates to a spark detector alarm for agricultural product drying that reduces interference. It includes a spark detector body 101 and an anti-interference mechanism 200 installed on the spark detector body 101. The spark detector body 101 includes a fixed cylinder 102 located at the front, and a probe 103 is provided at the front end of the fixed cylinder 102. The anti-interference mechanism 200 includes an anti-interference cover 201 fixed to the outer surface of the fixed cylinder 102. The anti-interference cover 201 includes an outer shell 202 and an inner shell 203. The inner wall of the inner shell 203 is provided with a variable diameter part 2021 and a mounting part 2022. The inner wall of the inner shell 203 is provided with a fixed plate 208 arranged in an array at the mounting part 2022. Springs 209 are symmetrically installed on the fixed plate 208 and are connected to the inner wall of the inner shell 203. This invention uses a metal anti-interference housing 201 to shield electromagnetic interference and weaken electromagnetic signals through multiple reflections. It can also block stray light and prevent dust adhesion through a conical air curtain. With these features, it can effectively reduce false alarms, accurately capture spark signals, and comprehensively improve the anti-interference capability and safety of the spark detector alarm in the agricultural product drying scenario.

[0022] Specifically, the fixing plate 208 is arc-shaped along its short axis. The fixing plate 208 includes a positioning part 2081 and a guide part 2082. The guide part 2082 is arc-shaped, curving outwards along its long axis. This outward-curving arc shape of the guide part 2082 ensures good guidance when the anti-interference cover 201 is inserted into the fixing cylinder 102, facilitating quick and accurate installation of the anti-interference cover 201 onto the fixing cylinder 102, reducing installation difficulty, and improving installation efficiency. Simultaneously, the arc-shaped structure of the fixing plate 208 better conforms to the outer surface of the fixing cylinder 102, enhancing the overall structural stability.

[0023] Furthermore, the inner wall of the positioning part 2081 is provided with a positioning protrusion 2083, the two ends of which are arc-shaped. The outer surface of the fixing cylinder 102 is provided with positioning grooves 1021, and the positioning protrusion 2083 is engaged in the positioning grooves 1021. When the anti-interference cover 201 is installed, the engagement of the positioning protrusion 2083 with the positioning groove 1021 can accurately position the installation position of the anti-interference cover 201, preventing it from rotating circumferentially or moving axially on the fixing cylinder 102, thus ensuring the reliability of the installation of the anti-interference cover 201. The arc-shaped design at both ends of the positioning protrusion 2083 can also facilitate the disengagement of the positioning protrusion 2083 from the positioning groove 1021 by applying a pulling force to the anti-interference cover 201, thereby facilitating the disassembly of the anti-interference cover 201.

[0024] It is worth noting that the anti-interference cover 201 is made of metal. An air cavity 205 is formed between the outer shell 202 and the inner shell 203. An air inlet pipe 206 communicating with the air cavity 205 is provided at the rear end of the anti-interference cover 201. A sloping opening 204 is provided at the front end of the anti-interference cover 201. An inclined air outlet 2041 is provided on the sloping opening 204. The metal anti-interference housing 201 can effectively shield electromagnetic interference. Its two-layer structure enhances its anti-electromagnetic interference performance, protecting the probe 103 and reducing the impact of external electromagnetic signals. The air cavity 205, in conjunction with an external air pump, allows for air blowing. The external air pump supplies air to the air cavity 205 through the air inlet pipe 206. The air passes through the air cavity 205 and exits through the inclined air outlet 2041. The exiting air forms a cone shape in front of the probe 103, creating a cone-shaped air curtain. This effectively prevents dust from entering the anti-interference housing 201 and adhering to the probe 103. Simultaneously, the air flowing within the air cavity 205 carries away heat generated inside the anti-interference housing 201 due to electromagnetic induction.

[0025] It is worth mentioning that the inner wall of the outer shell 202 and the outer surface of the inner shell 203 are both provided with several recesses 207. The recesses 207 are V-shaped, and a reflection area 2051 is formed between the recesses 207. When resisting electromagnetic interference, when the electromagnetic signal passes through the outer shell 202, it can enter the reflection area 2051 formed by the V-shaped recesses 207. Due to the V-shaped structure's characteristic of reflecting electromagnetic signals multiple times, the electromagnetic signal is continuously weakened by reflection within the reflection area 2051, greatly reducing the electromagnetic intensity entering the inner shell 203 to interfere with the probe 103, thereby significantly improving the spark detector alarm's resistance to electromagnetic interference.

[0026] It is worth noting that the variable diameter section 2021 is bent twice towards the inclined opening 204, and the diameter of the variable diameter section 2021 gradually increases from small to large, forming a trumpet shape. The trumpet shape of the variable diameter section 2021 can block external light while ensuring the monitoring range in front of the probe 103, preventing stray light from interfering with the probe 103's capture of the spark signal, and ensuring the accuracy of spark detection.

[0027] Working Principle: This embodiment provides a spark detector alarm for agricultural product drying that reduces interference. In use, first, the anti-interference cover 201 is installed, aligned with the fixed cylinder 102. At this time, the guide part 2082, with its outwardly curved arc structure, acts as a guide, guiding the anti-interference cover 201 to quickly and accurately fit onto the fixed cylinder 102. As the anti-interference cover 201 is pushed forward, the spring 209 is compressed. Under the reaction force of the spring 209, the positioning protrusion 2083 on the inner wall of the positioning part 2081 engages with the positioning groove 1021 on the outer surface of the fixed cylinder 102. After ensuring the anti-interference housing 201 is securely installed to prevent circumferential rotation or axial movement during use, the spark detector alarm is installed in a suitable position with its probe 103 facing the dried agricultural products. During operation, the anti-interference mechanism 200 plays a crucial role. The anti-interference housing 201 is made of metal, and its double-layer structure consisting of an outer shell 202 and an inner shell 203, combined with the air cavity 205, effectively shields electromagnetic interference. Electromagnetic signals passing through the outer shell 202 enter the reflection area 2051 formed by the V-shaped recess 207, utilizing the V-shaped structure to reflect electromagnetic interference. The multiple reflections of the magnetic signal continuously weaken the electromagnetic signal strength, reducing its interference with the probe 103. An external air pump supplies air into the air chamber 205 through the air inlet pipe 206. After passing through the air chamber 205, the gas is discharged from the inclined air outlet 2041 on the inclined opening 204, forming a conical air curtain in front of the probe 103. This prevents dust from entering the anti-interference housing 201 and adhering to the probe 103, ensuring the cleanliness of the probe 103. At the same time, the airflow in the air chamber 205 can also remove the heat generated by electromagnetic induction, maintaining a stable internal working environment. The variable diameter section 2021 is funnel-shaped. Furthermore, the double-bending structure not only blocks external light and prevents stray light from entering, but also ensures the monitoring range in front of the probe 103, ensuring that the probe 103 can accurately capture spark signals. When the probe 103 detects abnormal signals such as sparks or high temperatures, it transmits the signal to the processing system of the spark detector body 101. The system immediately triggers the audible and visual alarm device to issue an alarm. At the same time, it links with external equipment, such as starting the sprinkler system to spray water for fire extinguishing, or controlling the fan to stop, to block the path of fire source propagation, thereby achieving timely early warning and effective prevention and control of potential fire risks during the drying process of agricultural products, and ensuring production safety.

[0028] 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 product drying with reduced interference, characterized in that, The device includes a spark detector body (101) and an anti-interference mechanism (200) installed on the spark detector body (101). The spark detector body (101) includes a fixed cylinder (102) located at the front. A probe (103) is provided at the front end of the fixed cylinder (102). The anti-interference mechanism (200) includes an anti-interference cover (201) fixed to the outer surface of the fixed cylinder (102). The anti-interference cover (201) includes an outer shell (202) and an inner shell (203). The inner wall of the inner shell (203) is provided with a variable diameter part (2021) and a mounting part (2022). The inner wall of the inner shell (203) is provided with a fixed plate (208) arranged in an array at the mounting part (2022). Springs (209) are symmetrically installed on the fixed plate (208). The springs (209) are connected to the inner wall of the inner shell (203).

2. The spark detector alarm for agricultural product drying with reduced interference as described in claim 1, characterized in that, The fixing plate (208) is arc-shaped along the short axis. The fixing plate (208) includes a positioning part (2081) and a guide part (2082). The guide part (2082) is arc-shaped and bends outward along the long axis.

3. A spark detector alarm for agricultural product drying with reduced interference as described in claim 2, characterized in that, The inner wall of the positioning part (2081) is provided with a positioning protrusion (2083), and both ends of the positioning protrusion (2083) are arc-shaped. The outer surface of the fixing cylinder (102) is arrayed with positioning grooves (1021), and the positioning protrusion (2083) is engaged in the positioning grooves (1021).

4. A spark detector alarm for agricultural product drying with reduced interference as described in claim 3, characterized in that, The anti-interference cover (201) is made of metal. An air cavity (205) is formed between the outer shell (202) and the inner shell (203). An air inlet pipe (206) communicating with the air cavity (205) is provided at the rear end of the anti-interference cover (201). A sloping opening (204) is provided at the front end of the anti-interference cover (201). An inclined air outlet (2041) is provided on the sloping opening (204).

5. A spark detector alarm for agricultural product drying with reduced interference as described in claim 4, characterized in that, The inner wall of the outer shell (202) and the outer surface of the inner shell (203) are provided with a number of recesses (207). The recesses (207) are V-shaped and reflective areas (2051) are formed between the recesses (207).

6. A spark detector alarm for agricultural product drying with reduced interference as described in claim 5, characterized in that, The variable diameter section (2021) is bent twice in the direction of the inclined opening (204), and the diameter of the variable diameter section (2021) gradually increases from small to large. The variable diameter section (2021) is horn-shaped.

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