On-line detection device for moisture and temperature of bulk grain in elephant trunk

Abstract

The utility model provides a bulk grain moisture and temperature on-line detection device in an articulated chute, which comprises a temperature sensor, a grain moisture sensor, a fixed guide plate and an adjustable guide plate, the fixed guide plate and the adjustable guide plate are arranged in the articulated chute, a conical hopper is formed between the fixed guide plate and the adjustable guide plate, and the fixed guide plate and the adjustable guide plate are arranged in the articulated chute. A wide opening is formed in the grain inlet side of the conical hopper, a narrow opening is formed in the grain outlet side of the conical hopper, the fixed guide plate is fixedly installed in the articulated chute, a fixed rotating shaft is arranged at the lower end of the adjustable guide plate, the two ends of the fixed rotating shaft extend to be installed on the side wall of the articulated chute, and the adjustable guide plate rotates around the fixed rotating shaft. According to the online detection device for the moisture and the temperature of the bulk grains in the elephant trunk provided by the utility model, the fixed guide plate and the adjustable guide plate are arranged in the elephant trunk, so that a conical hopper structure of which the opening size can be adjusted as required is formed, a stacking device can be adjusted regardless of the grain flow in the elephant trunk, and an available dense material pile is formed; the online detection condition is met, and the channel is not easy to block.

Description

Technical Field

[0001] The invention relates to the technical field of grain drying detection, and in particular to an online detection device for the moisture and temperature of bulk grain in a chute. Background Art

[0002] The development and improvement of grain drying technology is an important aspect in the process of agricultural modernization. It is directly related to the shelf life of grain, reducing post-harvest losses and improving market competitiveness. Among them, continuous grain dryers are widely used in large-scale grain processing operations as an efficient drying method. In order to ensure the best drying effect, it is particularly important to accurately control and monitor the moisture and temperature of grain during the drying process.

[0003] The moisture content of grain is a key factor affecting its storage stability. High moisture content will accelerate mold growth, produce toxins, cause heat and deterioration; while too low moisture content will make the grain too dry and easy to break, affecting the taste and nutritional value. Therefore, the goal of drying is to reduce the moisture content to a safe storage level, and specific standards are usually set according to different types of grains.

[0004] Early moisture detection mostly relied on laboratory sampling and analysis, which was time-consuming and had limited representativeness. With technological advances, non-contact online moisture sensors (such as near-infrared and microwave sensors) have gradually been applied to real-time monitoring, improving the immediacy and accuracy of detection.

[0005] Temperature control during the drying process not only affects the rate of water evaporation, but also affects the uniformity of drying. Too high a temperature may cause the surface to burn while the inside is still moist, while too low a temperature may result in low efficiency. Grain temperature monitoring helps adjust drying parameters to ensure even heat distribution and improve drying efficiency.

[0006] Infrared thermometers, thermocouples and other devices are used to monitor grain temperature in real time, but these technologies face the challenge of accurately capturing representative temperature values ​​when applied in a dynamic, open chute environment.

[0007] Since the grain moisture and grain temperature must be measured in a dense grain pile, the existing measurement method is to install a chute at the outlet. Since the grain in the chute is a loose particle and non-dense flow, it cannot meet the detection conditions. Therefore, a fixed grain accumulation device is set in the chute, and two steel plates are used to form a bell mouth to produce grain accumulation. The line moisture sensor and temperature sensor are installed in the bell mouth to meet the detection conditions for detection. Since the bell mouth is large at the top and small at the bottom, the flow at the bottom is slow, so accumulation occurs. When the grain accumulation exceeds the upper end of the bell mouth, it automatically falls from other spaces in the chute.

[0008] However, this fixed bell mouth cannot adjust the flow speed of grain accumulation. If the grain flow in the chute is too small, grain accumulation cannot be formed. If the lower mouth of the bell is made too small, it is easy to be blocked by impurities and lose the measurement function. Summary of the invention

[0009] In view of the situation that it is difficult to measure the grain temperature and moisture online for grain flowing in a chute, the present invention provides an online detection device for the moisture temperature of bulk grain in a chute. Through an adjustable stacking structure, the stacking flow rate can be adjusted according to the size of the grain flow, thereby achieving the condition of online measurement of the grain temperature and moisture.

[0010] The solution adopted by the present invention to solve its technical problem is: an online detection device for the moisture temperature of bulk grain in a chute, comprising a temperature sensor, a grain moisture sensor, a fixed guide plate and an adjustable guide plate, wherein the fixed guide plate and the adjustable guide plate are installed in the chute, and a cone bucket is formed between the fixed guide plate and the adjustable guide plate, and the cone bucket has a wide opening toward the grain feeding side and a narrow opening toward the grain outflow side.

[0011] The fixed guide plate is fixedly installed in the slide pipe, the lower end of the adjustable guide plate is provided with a fixed rotating shaft, both ends of the fixed rotating shaft are extended and installed on the side wall of the slide pipe, and the adjustable guide plate rotates around the fixed rotating shaft.

[0012] A movable cross bar is arranged on the upper side of the adjustable guide plate, and an adjusting groove is arranged on the side wall corresponding to the chute. Both ends of the movable cross bar extend outward and are inserted into the adjusting groove. The movable cross bar slides in the adjusting groove, thereby changing the size of the width of the cone bucket. An extended section of the movable cross bar protrudes to the outside of the chute wall, and an external thread is arranged on the extended section of the movable cross bar. A nut is mounted on the external thread on the outside of the chute wall, and the position of the adjustable guide plate is fixed by tightening the nut; the temperature sensor and the grain moisture sensor pass through the chute wall and are inserted horizontally into the cone bucket.

[0013] Furthermore, the nut is a butterfly nut.

[0014] Furthermore, the temperature sensor and the grain moisture sensor are also provided with a data transmission module, and the data transmission module uses wireless transmission or wired transmission to transmit data.

[0015] Furthermore, the wireless transmission of the data transmission module adopts a 5G transmission module, and the detected temperature and moisture data are transmitted through the 5G transmission module.

[0016] Furthermore, a rubber sheet is pasted on the side of the adjusting groove in the slide pipe, and a tight slit parallel to the adjusting groove is cut on the rubber sheet, and the moving crossbar extension section of the adjustable guide plate slides in the slit.

[0017] Furthermore, one end of the movable cross bar is extended and a limit block is arranged on the outside of the slide pipe, and the other end of the extended section is arranged with an external thread, and a butterfly nut is mounted on the external thread.

[0018] Beneficial effects of the invention: The utility model provides an online detection device for the moisture and temperature of bulk grain in a chute. Regardless of the grain flow rate in the chute, the stacking device can be adjusted to form a usable dense material pile to achieve online detection conditions, and the channel is not easily blocked. The utility model is simple, practical and reliable.

[0019] The utility model forms a cone bucket structure with an adjustable opening size as required by arranging a fixed guide plate and an adjustable guide plate in the chute. The user can flexibly adjust the width of the cone bucket according to the grain flow rate, type or detection requirements, thereby optimizing the grain flow state and improving the representativeness and accuracy of the detection data. The adjustable guide plate is installed on the side wall of the chute through a fixed rotating shaft and can rotate around the axis. The movable cross bar on the upper side passes through the adjustment groove on the side wall of the chute, thereby realizing the precise adjustment of the guide plate position. The structure is simple and easy to operate. Moreover, the outer thread and nut locking mechanism ensure the stability and reliability of the adjusted position, thereby improving the practicality and durability of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the appearance structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the principle structure of the utility model;

[0023] Figure 4 It is a structural schematic diagram of an adjustable guide plate.

[0024] The symbols in the figure are: slide pipe 1, temperature sensor 2, grain moisture sensor 3, fixed guide plate 11, adjustable guide plate 12, adjustment groove 13, butterfly nut 14, fixed rotating shaft 121, and movable cross bar 122. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below.

[0026] Embodiment 1: In grain drying operations, it is necessary to timely detect the temperature and moisture content of the dried grains so as to adjust in real time to ensure the best drying effect. To this end, the utility model provides an online detection device for the moisture content and temperature of bulk grains in a chute, such as Figure 1-4As shown, by installing two inclined guide plates in the chute 1, the two guide plates form a cone bucket with a wide inlet and a narrow outlet in the chute 1. When the grain moves in the chute, the structure with a wide inlet and a narrow outlet will cause the grain to accumulate in the cone bucket, thereby forming a dense grain pile that can be used for temperature and moisture detection. By inserting the temperature sensor 2 and the grain moisture sensor 3 into the dense grain pile, the current temperature and moisture content of the grain can be detected, providing data support for timely adjustment of the drying work.

[0027] The temperature sensor 2 and the grain moisture sensor 3 are also provided with a data transmission module, which uses wireless transmission or wired transmission to feedback data. The wireless transmission uses a 5G transmission module, and the detected temperature and moisture data are transmitted to the background processing through the 5G transmission module.

[0028] The width of the guide plate is the same as the inner width of the chute, and the two ends of the guide plate are connected to the inner wall of the chute. Specifically, the two guide plates are a fixed guide plate 11 and an adjustable guide plate 12, wherein the fixed guide plate 11 is fixed in the chute by welding, bolting or riveting. The adjustable guide plate 12 is installed on the other side opposite to the fixed guide plate 11, and the direction of grain input in the chute 1 is upward and the direction of grain output is downward, based on the flow direction of grain, the lower end of the adjustable guide plate 12 is rotatably installed on the side wall of the chute, and the upper end of the adjustable guide plate 12 rotates with the lower end as the axis.

[0029] Specifically, a fixed rotating shaft 121 is provided at the lower end of the adjustable guide plate 12, and an axial hole is provided at a position corresponding to the side wall of the slide pipe. The two ends of the fixed rotating shaft 121 extend to both sides and are inserted into the axial hole, so that the adjustable guide plate 12 is installed in the slide pipe 1. An adjustment groove 13 is provided on the side wall of the slide pipe 1 on the upper side of the axial hole. The adjustment groove 13 is an arc groove with the axial hole as the center and the length of the guide plate as the radius. A movable cross bar 122 is provided at the upper end of the adjustable guide plate 12. The two ends of the movable cross bar 122 extend to both sides and are inserted into the adjustment groove 13 of the two side walls of the slide pipe 1. With the fixed rotating shaft 121 as the center, the movable cross bar 122 can slide in the adjustment groove 13.

[0030] The movable cross bar 122 extends outward to the outside of the slide pipe 1, and an external thread is provided on the extension section located outside the slide pipe 1. A nut is mounted on the external thread, and the position of the movable cross bar 122 can be fixed by the nut.

[0031] The nut may be a butterfly nut, which can be tightened or loosened without using tools, making the adjustment of the adjustable guide plate 12 more convenient.

[0032] The working principle of the utility model is that grain flows in the chute 1, and the inclined guide plate installed in the chute 1 narrows the channel of the chute 1, thereby hindering the flow of grain, and due to the inclination angle of the guide plate, the channel between the upper end of the guide plate and the wall of the chute 1 becomes narrower, and a cone bucket with a narrow bottom and a wide top is formed between the guide plates. When the grain flow encounters the narrowed position, it is hindered and accumulates in the narrow place, thereby forming a cone bucket between the guide plates and grain accumulation in the chute 1 upstream of the guide plate, and the grain downstream of the guide plate passes smoothly. The grain accumulated in the cone bucket between the guide plates provides a grain pile that can be measured, and the temperature and moisture content of the grain flow are detected by the temperature sensor 2 and the grain moisture sensor 3 inserted into the cone bucket area.

[0033] Embodiment 2: The adjusting groove 13 forms a through hole on the side wall of the chute. When grain passes through, grain particles will leak out of the adjusting groove 13. For this reason, in this embodiment, a rubber sheet is further pasted on the side of the adjusting groove 13 located in the chute. A tight seam parallel to the adjusting groove 13 is cut on the rubber sheet. When the extension section of the movable cross bar 122 of the adjustable guide plate 12 slides in the seam, the rubber sheet is stretched open. After the extension section slides away, the rubber sheet restores the state of sealing the seam under the action of its own elasticity to prevent grain from flowing out of the adjusting groove 13.

[0034] One end of the movable cross bar 122 is extended and a limit block is arranged on the outside of the slide pipe 1, and the other end of the extended section is provided with an external thread, and a butterfly nut 14 is mounted on the external thread.

[0035] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. An online detection device for the moisture temperature of bulk grain in a chute, characterized in that: The invention comprises a temperature sensor (2), a grain moisture sensor (3), a fixed guide plate (11) and an adjustable guide plate (12), wherein the fixed guide plate (11) and the adjustable guide plate (12) are installed in the chute (1), and a cone bucket is formed between the fixed guide plate (11) and the adjustable guide plate (12), and the cone bucket has a wide opening toward the grain inlet side and a narrow opening toward the grain outlet side; The fixed guide plate (11) is fixedly installed in the slide pipe, and a fixed rotating shaft (121) is arranged at the lower end of the adjustable guide plate (12). Both ends of the fixed rotating shaft (121) are extended and installed on the side wall of the slide pipe (1), and the adjustable guide plate (12) rotates around the fixed rotating shaft (121); A movable cross bar (122) is arranged on the upper side of the adjustable guide plate (12), and an adjustment groove (13) is arranged on the corresponding side wall of the slide pipe (1). Both ends of the movable cross bar (122) extend outwardly and are inserted into the adjustment groove (13). The movable cross bar (122) slides in the adjustment groove (13), thereby changing the size of the cone bucket width. An extension section of the movable cross bar (122) protrudes to the outside of the slide pipe (1) wall, and an external thread is arranged on the extension section of the movable cross bar (122). A nut is mounted on the external thread on the outside of the slide pipe (1) wall, and the position of the adjustable guide plate (12) is fixed by tightening the nut. The temperature sensor (2) and the grain moisture sensor (3) are inserted horizontally into the cone bucket through the wall of the chute.

2. The online detection device for the moisture temperature of bulk grain in a chute according to claim 1 is characterized in that: The nut is a butterfly nut.

3. The online detection device for the moisture temperature of bulk grain in a chute according to claim 1 is characterized in that: The temperature sensor (2) and the grain moisture sensor (3) are also provided with a data transmission module, and the data transmission module uses wireless transmission or wired transmission to perform data transmission.

4. The online detection device for the moisture temperature of bulk grain in a chute according to claim 3 is characterized in that: The wireless transmission of the data transmission module adopts a 5G transmission module, and the detected temperature and moisture data are transmitted through the 5G transmission module.

5. The online detection device for the moisture temperature of bulk grain in a chute according to claim 1 is characterized in that: A rubber sheet is pasted on the side of the adjusting groove (13) located in the slide pipe (1), and a tight slit parallel to the adjusting groove (13) is cut on the rubber sheet, and an extended section of the movable crossbar (122) of the adjustable guide plate (12) slides in the slit.

6. The online detection device for the moisture temperature of bulk grain in a chute according to claim 1 is characterized in that: One end of the movable cross bar (122) is extended and a limit stopper is arranged outside the slide pipe (1), and the other end of the extended section is provided with an external thread, and a butterfly nut (14) is mounted on the external thread.

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