A dryer with moisture detection

Abstract

The utility model belongs to the technical field of grain drying equipment, especially point to a kind of dryer with moisture detection, including the shell with drying chamber, more than one grain containing cavity is provided in drying chamber, and drying grain is stacked in grain containing cavity, the top of one of grain containing cavity is fixed with moisture detector by support, and the detection feeding assembly that is set up obliquely upwards and downwards, moisture detector is located above drying grain, the feeding end of detection feeding assembly is embedded into drying grain downwards, and the feeding end position of moisture detector is opposite to the discharge end of detection feeding assembly. The utility model is simple in structure, reasonable in design and higher in economic benefit, by directly installing existing moisture detector in drying chamber, grain is automatically put into moisture detector by detection feeding assembly, and the purpose of directly measuring the moisture of grain in drying chamber is achieved, to obtain reliable, accurate grain drying state.

Description

Technical fields:

[0001] This utility model belongs to the technical field of grain drying equipment, and specifically refers to a dryer with moisture detection. Background technology:

[0002] Grain drying is a crucial step in post-harvest grain processing, essential for ensuring grain storage safety, quality, and extending shelf life. The core objective of the drying process is to reduce grain moisture content below safe storage standards. Therefore, accurate and real-time monitoring of grain moisture content during the drying process is a key parameter for controlling drying efficiency and ensuring final grain quality.

[0003] However, most commercially available grain dryers lack a direct method for detecting grain moisture content, relying primarily on time-dependent and indirect airflow detection methods. 1. Time-dependent method: This method primarily determines drying completion based on a preset drying time. However, the initial moisture content of each batch of grain, changes in environmental temperature and humidity, and other factors all affect drying efficiency. Relying solely on drying time control can easily lead to under-drying or over-drying. 2. Indirect airflow detection method: This method involves installing humidity sensors within the airflow ducts of the drying chamber to indirectly infer the average moisture content of the grains by detecting the moisture content in the exhaust airflow. However, since the humidity in the airflow is not the real-time moisture content of the grains themselves, there is a significant time lag between the migration of grain moisture and changes in airflow humidity, making it impossible to effectively and promptly detect grain moisture content. Summary of the Invention:

[0004] The purpose of this invention is to provide a dryer with moisture detection, which directly installs a moisture detector in the drying chamber to obtain a reliable and accurate picture of the dried grains by directly measuring the moisture content of the grains in the drying chamber.

[0005] This utility model is implemented as follows:

[0006] A dryer with moisture detection includes a shell with a drying chamber. The drying chamber has one or more grain holding cavities, in which dried grains are piled. A moisture detector and a detection feeding assembly are fixed to the top of one of the grain holding cavities by a bracket. The moisture detector is located above the dried grains. The feed end of the detection feeding assembly is buried downward in the dried grains. The discharge end of the detection feeding assembly is opposite to the feed end of the moisture detector.

[0007] In the above-mentioned grain drying oven with moisture detection, two or more grain drying ovens are arranged side by side in the horizontal direction in the drying chamber. The opening of the grain drying oven is set upward and the grain drying oven and the shell are separate structures. The grain holding cavity is the inner cavity of the grain drying oven. The moisture detector and the detection and feeding assembly are mounted on the opening of the grain drying oven by a bracket.

[0008] In the above-mentioned grain drying oven with moisture detection, the detection and feeding assembly includes a feeding base and a drive pulley and a driven pulley respectively rotatably connected to both ends of the feeding base. The drive pulley and the driven pulley are connected by a feeding conveyor belt. A drive motor fixed on the feeding base is connected to the drive pulley. The drive motor drives the rotation of the drive pulley to drive the feeding conveyor belt to transport the dried grains upward.

[0009] In the aforementioned grain drying oven with moisture detection, a control assembly and a display screen are provided on the shell. The moisture detector is electrically connected to the control assembly, and the control assembly controls the display screen to display the drying information status of the grains in real time according to the signal from the moisture detector.

[0010] In the aforementioned grain drying oven with moisture detection, an operation window is provided on the side wall of the shell above the opening of each grain drying oven, and a removable operation observation cover is provided at the operation window.

[0011] In the above-mentioned grain drying oven with moisture detection, each of the grain drying ovens includes a movable base and a drying oven body disposed on the movable base. The drying oven body is connected to the movable base through a detachable component. The bottom of the movable base is rolled on the ground plane by support rollers. One end of the shell is a placement port for the movable base and the drying oven body to enter and exit the drying chamber. A placement door that can cover and seal the placement port is hinged at the placement port.

[0012] The outstanding advantages of this utility model compared to the prior art are:

[0013] This utility model has a simple structure, reasonable design, and high economic benefits. By directly installing an existing moisture detector in the drying chamber, the grains are automatically fed into the moisture detector through the feeding component, thereby achieving the purpose of directly measuring the moisture content of the grains in the drying chamber and obtaining a reliable and accurate grain drying status. Attached image description:

[0014] Figure 1 This is a three-dimensional view of the entire utility model;

[0015] Figure 2 This is an overall sectional view of the present invention;

[0016] Figure 3This is a three-dimensional view of the grain drying oven of this utility model.

[0017] In the diagram: 1. Drying chamber; 2. Shell; 3. Support; 4. Moisture analyzer; 5. Feeding assembly; 6. Grain drying oven; 7. Feeding base; 8. Feeding conveyor belt; 9. Operation window; 10. Movable base; 11. Oven body; 12. Supporting rollers; 13. Door placement. Detailed implementation method:

[0018] The present invention will be further described below with reference to specific embodiments. See also: Figure 1 —3:

[0019] A dryer with moisture detection includes a shell 2 having a drying chamber 1. The drying chamber 1 contains one or more grain holding cavities, each filled with dried grains. A moisture detector 4 and a vertically inclined feeding assembly 5 are fixed to the top of one of the grain holding cavities via a bracket 3. The moisture detector 4 is positioned above the dried grains, with the feed end of the feeding assembly 5 embedded downwards within the grains. The discharge end of the feeding assembly 5 is opposite to the feed end of the moisture detector 4. The moisture detector 4 is a commercially available type. However, in this embodiment, a force-measuring moisture detector 4 is used. The working principle of this type of detector can be found in the relevant patent disclosed in Chinese Invention Patent (Authorization Announcement No. CN104142358B), and therefore will not be described in detail in this embodiment.

[0020] This utility model has a simple structure, reasonable design and high economic benefits. By directly installing the existing moisture detector 4 into the drying chamber 1, the grains are automatically fed into the moisture detector 4 through the feeding component 5, so as to directly measure the moisture content of the grains in the drying chamber 1 and obtain a reliable and accurate grain drying status.

[0021] Furthermore, the grain holding cavity can be a cavity directly divided by the drying chamber 1. In this embodiment, to facilitate the loading and unloading of grain in the drying chamber 1, two or more grain ovens 6 are arranged side by side in the horizontal direction inside the drying chamber 1. The openings of the grain ovens 6 are upward-facing, and the grain ovens 6 and the shell 2 are separate structures. The grain holding cavity is the inner cavity of the grain oven 6, that is, the moisture detector 4 and the feeding assembly 5 are mounted on the opening of one of the grain ovens 6 via the bracket 3. Of course, the moisture detector 4 can also be installed on each grain oven 6, depending on the actual operational needs.

[0022] Meanwhile, the detection and feeding component 5 can be constructed by using a servo motor to drive a conveying screw to transport grains upwards. In this embodiment, the specific structure of the detection and feeding component 5 is as follows: the detection and feeding component 5 includes a feeding base 7 and a drive pulley and a driven pulley that are rotatably connected to both ends of the feeding base 7. The drive pulley and the driven pulley are connected by a feeding conveyor belt 8. The drive motor fixed on the feeding base 7 is connected by a drive pulley to drive the rotation of the drive pulley, thereby driving the feeding conveyor belt 8 to transport the dried grains upwards.

[0023] Furthermore, to achieve human-machine interaction and provide operators with timely information on the drying status of the grains inside the dryer, a control assembly and a display screen are installed on the housing 2. The moisture detector 4 is electrically connected to the control assembly, and the control assembly controls the display screen to display the drying information status of the grains in real time based on the signal from the moisture detector 4. Moreover, considering the long overall drying time, the frequency of grain moisture detection is optimized according to the actual drying operation. Specifically, the moisture detector 4 and the feeding assembly 5 should have longer intervals between operations, or even be inactive, in the early stages of drying. In the middle stages of drying, grain moisture detection can be performed every half hour, while in the later stages of drying, the intervals should be shortened and made more frequent to ensure timely acquisition of the actual drying status of the grains.

[0024] Meanwhile, considering that insufficient grain stacking may prevent effective burial of the feed end of the detection feeding component 5, an operation window 9 is provided on the side wall of the shell 2 above the opening of each grain drying oven 6. A removable operation observation cover is provided at the operation window 9. The operation observation cover can be made of transparent material, allowing the operator to periodically observe the grain stacking and burial status of the feed end of the detection feeding component 5 within the drying chamber 1. When the detection feeding component 5 fails to effectively transport the grains upwards to the moisture detector 4, the operator can open the operation observation cover and adjust the grain stacking and burial status of the feed end of the detection feeding component 5 through the operation window 9.

[0025] In addition, to facilitate the operation of the grain drying oven 6 entering and exiting the drying chamber 1, as well as the cleaning, replacement, and maintenance of the grain drying oven 6, each of the grain drying ovens 6 includes a movable base 10 and an oven body 11 set on the movable base 10. The oven body 11 is connected to the movable base 10 through a detachable component, which can be a common snap-fit ​​structure or a plug-in structure. The bottom of the movable base 10 is rolled on the ground plane by support rollers 12. One end of the housing 2 is a placement port for the movable base 10 and the oven body 11 to enter and exit the drying chamber 1. A placement door 13 that can cover and seal the placement port is hinged at the placement port.

[0026] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A dryer with moisture detection, comprising a shell (2) having a drying chamber (1), wherein the drying chamber (1) is provided with one or more grain receiving cavities, and the grain receiving cavities are filled with dried grains, characterized in that: One of the grain receiving cavities has a moisture detector (4) and a detection and feeding assembly (5) that is tilted up and down fixed to the top of the cavity via a bracket (3). The moisture detector (4) is located above the dried grains. The feed end of the detection and feeding assembly (5) is buried downward into the dried grains. The discharge end of the detection and feeding assembly (5) is opposite to the feed end of the moisture detector (4).

2. A dryer with moisture detection according to claim 1, characterized in that: The drying chamber (1) contains two or more grain drying ovens (6) arranged side by side in the horizontal direction. The opening of the grain drying oven (6) is facing upward and the grain drying oven (6) and the shell (2) are separate structures. The grain holding cavity is the inner cavity of the grain drying oven (6). The moisture detector (4) and the detection and feeding assembly (5) are mounted on the opening of the grain drying oven (6) by a bracket (3).

3. A dryer with moisture detection according to claim 1 or 2, characterized in that: The detection and feeding assembly (5) includes a feeding base (7) and a drive pulley and a driven pulley that are rotatably connected to both ends of the feeding base (7). The drive pulley and the driven pulley are connected by a feeding conveyor belt (8). The drive motor fixed on the feeding base (7) is connected by a drive pulley. The drive motor drives the rotation of the drive pulley to drive the feeding conveyor belt (8) to convey the dried grains upward.

4. A dryer with moisture detection according to claim 3, characterized in that: The housing (2) is equipped with a control assembly and a display screen. The moisture detector (4) is electrically connected to the control assembly. The control assembly controls the display screen to display the drying information status of the dried grains in real time according to the signal from the moisture detector (4).

5. A dryer with moisture detection according to claim 2, characterized in that: An operation window (9) is provided on the side wall of the shell (2) above the opening of each of the grain drying ovens (6), and a removable operation observation cover is provided at the operation window (9).

6. A dryer with moisture detection according to claim 2, characterized in that: Each of the grain drying ovens (6) includes a movable base (10) and an oven body (11) disposed on the movable base (10). The oven body (11) is connected to the movable base (10) by a detachable component. The bottom of the movable base (10) is rolled on the ground by a support roller (12). One end of the housing (2) is a placement port for the movable base (10) and the oven body (11) to enter and exit the drying chamber (1). A placement door (13) is hinged at the placement port to cover and seal the placement port.

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