Soil water content detection device

Abstract

The utility model discloses a soil water content detection device, which comprises a weighing device, the drying cylinder is horizontally placed on the weighing device and comprises a cylinder body and a heat insulation layer, a heating wire is arranged in the inner wall of the cylinder body, an adding hopper communicated with the cylinder body is arranged at the top of the drying cylinder, a cover plate with fine meshes is arranged at the position of the adding hopper, a discharging opening communicated with the interior of the cylinder body is formed in one axial side of the drying cylinder, and a door plate is arranged at the discharging opening; the stirrer comprises a stirring shaft and stirring blades, the stirring shaft is coaxially and rotatably mounted in the barrel, the stirring blades are arranged on the lower side of the stirring shaft, and the multiple stirring blades are arranged in the length direction of the stirring shaft at intervals; the driving mechanism is used for driving the stirrer to slowly swing back and forth in the front-back direction. According to the device, the heating drying cylinder is matched with the slowly-swinging stirrer, so that soil can be quickly dried, the obvious dust raising phenomenon of the soil cannot be caused, and the influence on a detection result is avoided.

Description

Technical Field

[0001] The utility model relates to the field of soil moisture content detection, in particular to a soil moisture content detection device. Background Art

[0002] In the prior art, soil moisture content testing generally involves first weighing the soil sample and then placing it in a drying box. After the soil is dried using circulating hot air, when the scale reading remains constant, the soil is considered to have been dried, and the soil moisture content can be calculated based on the weight change. This detection method is simple and convenient, but it does have certain errors. This is because when hot air is blown towards the soil, as the soil gradually dries, the continuous hot air will cause dust to form in the soil. Small particles of soil are easily carried away by the airflow and dissipated into the outside air, affecting the detection effect. Moreover, this simple hot air drying method is uneven. When the outer layer of the soil is completely dry, the inner layer is often still moist, resulting in low drying efficiency and requiring improvement. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, one purpose of the present invention is to provide a soil moisture content detection device.

[0004] The technical solution of the utility model is as follows: A soil moisture detection device, characterized in that it includes:

[0005] weighing machine;

[0006] A drying drum, the drying drum is placed horizontally on the weighing device, the drying drum comprises a drum body and a heat-insulating layer wrapped around the outside of the drum body, a heating wire is provided in the inner wall of the drum body, a feeding hopper connected to the drum body is provided on the top of the drying drum, a cover plate with a fine mesh is detachably provided at the feeding hopper, an axial side of the drying drum is provided with a discharge port connected to the interior of the drum body, and a door panel is provided at the discharge port;

[0007] A stirrer, the stirrer comprising a stirring shaft and stirring blades, the stirring shaft being coaxially rotatably mounted within the cylinder, the stirring blades being disposed on the lower side of the stirring shaft, the stirring blades being multiple and spaced apart along the length of the stirring shaft;

[0008] A driving mechanism is connected to the stirrer and is used to drive the stirrer to swing slowly back and forth in a front-back direction.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0010] 1. This device still uses the method of drying the soil and weighing it before and after to detect the soil moisture content. This detection method is simple, the technology is mature, and it is practical.

[0011] 2. This device does not use the method of blowing hot air to dry the soil. Instead, the soil is placed in a drying cylinder with a built-in heating wire. The soil is dried by contact with the heated inner wall of the cylinder. Therefore, the hot air will not blow the soil away, causing large errors in the test results.

[0012] 3. The drying drum in this device is placed horizontally. After the soil is placed in the drying drum, it is not easy to pile up together, but can be spread out, which has a larger contact area with the drum and a better drying effect.

[0013] 4. In order to further improve the drying efficiency, an agitator is installed in the drying drum. The agitator does not rotate at high speed, but only swings slowly in the front-to-back direction. Therefore, the stirring blades of the agitator can slowly stir the soil, disperse the soil, speed up the drying, and will not cause obvious dust generation in the soil. In addition, a cover with fine mesh holes is provided at the adding hopper, which will not affect the flow of airflow, but can also intercept soil particles in the air inside the drum to prevent them from escaping into the external air and affecting the detection effect.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a three-dimensional diagram of the utility model;

[0018] Figure 3 It is a cross-sectional view of the present utility model.

[0019] Reference numerals:

[0020] 1. Scale; 2. Drying drum; 3. Drum body; 4. Insulation layer; 5. Heating wire; 6. Adding hopper; 7. Cover plate; 8. Door panel; 9. Agitator; 10. Agitator shaft; 11. Agitator blades; 12. Low-speed motor; 13. Eccentric wheel; 14. Swing ring; 15. Bracket. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0022] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0024] In the description of this utility model, "first feature" or "second feature" may include one or more of these features. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features being described. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of these features.

[0025] like Figure 1-Figure 3 The soil moisture content detection device shown is characterized by comprising: a weighing device 1, a drying drum 2, a stirrer 9 and a driving mechanism.

[0026] The drying cylinder 2 is placed horizontally on the weighing device 1. The drying cylinder 2 includes a cylinder body 3 and a heat insulation layer 4 wrapped around the outside of the cylinder body 3. A heating wire 5 is provided in the inner wall of the cylinder body 3. The top of the drying cylinder 2 is provided with an adding bucket 6 connected to the cylinder body 3. A cover plate 7 with a fine mesh is removably provided at the adding bucket 6. An outlet connected to the inside of the cylinder body 3 is provided on one axial side of the drying cylinder 2, and a door panel 8 is provided at the outlet.

[0027] The agitator 9 includes a stirring shaft 10 and a stirring blade 11. The stirring shaft 10 is coaxially mounted in the barrel 3. The stirring blade 11 is provided on the lower side of the stirring shaft 10. There are multiple stirring blades 11 and they are arranged at intervals along the length direction of the stirring shaft 10. The driving mechanism is connected to the agitator 9, and the driving mechanism is used to drive the agitator 9 to swing slowly back and forth in the forward and backward directions.

[0028] Specifically, compared with the existing method of using hot air to dry the soil and weighing it before and after to detect soil moisture content, this device has the following characteristics:

[0029] 1. This device still uses the method of drying the soil and weighing it before and after to detect the soil moisture content. This detection method is simple, the technology is mature, and it is practical.

[0030] 2. This device does not use hot air to dry the soil. Instead, the soil is placed in a drying cylinder 2 with a built-in heating wire 5. The soil is dried by contact with the inner wall of the heated cylinder 3. Therefore, the hot air will not blow the soil away, causing large errors in the test results.

[0031] 3. The drying drum 2 in this device is placed horizontally. After the soil is placed in the drying drum 2, it is not easy to pile up together, but can be dispersed, which will have a larger contact area with the drum 3, and the drying effect will be better;

[0032] 4. In order to further improve the drying efficiency, an agitator 9 is provided in the drying drum 2. The agitator 9 does not rotate at high speed, but only swings slowly in the front-back direction. Therefore, the stirring blades 11 of the agitator 9 can slowly stir the soil, disperse the soil, speed up the drying, and will not cause obvious dust generation in the soil. In addition, a cover plate 7 with fine mesh is provided at the adding hopper 6, which will not affect the flow of airflow, but can also intercept soil particles in the air inside the cylinder 3 to prevent them from escaping into the external air and affecting the detection effect.

[0033] In further settings, such as Figure 1As shown, the driving mechanism is located on one axial side of the outside of the drying drum 2, and the driving mechanism includes a low-speed motor 12, an eccentric wheel 13 and a swing ring 14. The low-speed motor 12 is fixedly connected to the drying drum 2 through a bracket 15. The low-speed motor 12 shaft of the low-speed motor 12 is fixedly connected to the eccentric wheel 13 to drive the eccentric wheel 13 to rotate eccentrically. The swing ring 14 is covered on the eccentric wheel 13, and one axial end of the stirring shaft 10 passes through the drying drum 2 and is fixedly connected to the swing ring 14, thereby realizing the slow back and forth swing of the agitator 9.

[0034] like Figure 3 As shown, the heat insulation layer 4 is a polyurethane foam layer, which can reduce heat dissipation and waste. The thickness direction of the stirring blade 11 is perpendicular to the axial direction of the stirring shaft 10. The stirring blade 11 is smaller at the top and larger at the bottom, and the lower end of the stirring blade 11 contacts the bottom wall of the cylinder 3. Therefore, when the stirrer 9 swings back and forth, the stirring blade 11 can better push and disperse the soil.

[0035] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A soil moisture detection device, characterized in that: include: weighing machine; A drying drum, the drying drum is placed horizontally on the weighing device, the drying drum comprises a drum body and a heat-insulating layer wrapped around the outside of the drum body, a heating wire is provided in the inner wall of the drum body, a feeding hopper connected to the drum body is provided on the top of the drying drum, a cover plate with a fine mesh is detachably provided at the feeding hopper, an axial side of the drying drum is provided with a discharge port connected to the interior of the drum body, and a door panel is provided at the discharge port; A stirrer, the stirrer comprising a stirring shaft and stirring blades, the stirring shaft being coaxially rotatably mounted within the cylinder, the stirring blades being disposed on the lower side of the stirring shaft, the stirring blades being multiple and spaced apart along the length of the stirring shaft; A driving mechanism is connected to the stirrer and is used to drive the stirrer to swing slowly back and forth in a front-back direction.

2. The soil moisture detection device according to claim 1, characterized in that: The heat insulation layer is a polyurethane foam layer.

3. The soil moisture detection device according to claim 1, characterized in that: The driving mechanism is located on one axial side of the outside of the drying cylinder, and the driving mechanism includes a low-speed motor, an eccentric wheel and a swing ring. The low-speed motor is fixedly connected to the drying cylinder through a bracket, and the low-speed motor shaft of the low-speed motor is fixedly connected to the eccentric wheel to drive the eccentric wheel to rotate eccentrically. The swing ring outer cover is on the eccentric wheel, and one axial end of the stirring shaft passes through the drying cylinder outward and is fixedly connected to the swing ring.

4. The soil moisture detection device according to claim 1, characterized in that: The thickness direction of the stirring blade is perpendicular to the axial direction of the stirring shaft. The stirring blade is smaller at the top and larger at the bottom, and the lower end of the stirring blade contacts the bottom wall of the cylinder.

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