Water-retaining property testing device for agricultural mulching film

Abstract

The utility model discloses a water-retaining property testing device for an agricultural mulching film, which relates to the technical field of mulching film measurement and comprises a workbench, an electronic scale, a water evaporation cup, a mulching film main body, a fixing box and a sealing mechanism. The sealing mechanism is arranged, the rotating rod rotates to drive the movable plate and the fixed rod to rotate through mechanical transmission, when the rotating rod rotates to be in a vertical state, the movable block is moved downwards, the movable block moves to drive the movable plate and the sealing piece to move through mechanical transmission, the sealing piece moves and extrudes a mulching film body, and the mulching film body is extruded. The cover plate tightly presses the moving plate on the cup opening of the moisture evaporation cup, so that the agricultural mulching film is tightly attached to the cup opening of the moisture evaporation cup, the structure is beneficial to the operation of sealing connection between the mulching film body and the moisture evaporation cup, and the situation that moisture overflows through a gap between the moisture evaporation cup and the mulching film body is avoided; and the accuracy of the water-retaining property test of the mulching film main body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ground film measurement, in particular to a device for testing the water retention of agricultural ground films. Background Art

[0002] The mulch film covering technology can significantly increase temperature and conserve moisture, and has been widely used in the production of food crops, cash crops, and tree breeding, significantly increasing crop yields and promoting vigorous plant growth. It has become an indispensable production material in the field of agricultural production, especially in dryland agricultural areas. However, the use of traditional polyethylene mulch film has led to increasingly serious pollution from residual mulch film in farmland, seriously affecting the sustainable development of agriculture and polluting the environment, turning the "white revolution" into "white pollution". The development and application of degradable mulch film is an ideal way to solve the above problems and carry out environmentally friendly agricultural production.

[0003] At present, when testing the water retention of mulch, water is placed in a moisture evaporation cup, and then the mulch is covered on the mouth of the moisture evaporation cup. The weight of the front and back of the moisture evaporation cup is measured by an electronic scale to achieve the effect of testing the water retention of the mulch. However, when testing the current mulch, there is a gap between the mulch covering the mouth of the moisture evaporation cup and the cup body, resulting in excessive evaporation of water in the cup, affecting the accuracy of the mulch water retention test. Therefore, a device for measuring the water retention of degradable agricultural mulch is provided. Utility Model Content

[0004] Purpose of the utility model: To solve the problem that the gap between the ground film and the mouth of the water evaporation cup affects the accuracy of the water retention test of the ground film, a device for measuring the water retention of degradable agricultural ground film is provided.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for testing water retention of agricultural mulch film, comprising a workbench, an electronic scale is placed on the top of the workbench, a water evaporation cup is placed on the top of the electronic scale, a mulch film body is placed on the top of the water evaporation cup, and the testing device also includes:

[0007] A sealing mechanism, which is used to seal the ground film body and the water evaporation cup during the test while ensuring contact with the outside world. The sealing mechanism is rotatably installed on the side of the water evaporation cup through a hinge, and the inner circle of the lower surface in sealing contact with the water evaporation cup is provided with a sealing strip adapted to the groove on the water evaporation cup;

[0008] The fixing mechanism is used to tightly install the sealing mechanism and the water evaporation cup.

[0009] Furthermore, the sealing mechanism further comprises:

[0010] A cover plate, the cover plate is installed on the top side of the water evaporation cup through a rotating rod, and the cover plate is provided with a hollow for the ground film body to contact with the outside air;

[0011] The fixing rod is arranged on the cover plate, and the fixing rod is fixedly arranged on the side of the cover plate and extends downward for a section;

[0012] A moving column, wherein the moving column is fixedly arranged with the moving block and movably arranged inside the cover plate;

[0013] A moving plate, wherein a through hole for installing a moving column is formed on the moving plate, wherein the moving column passes through the through hole and passes through a fixing plate on the moving column so that the moving plate can move up and down on the moving column, and a hollow having the same size as the cover plate is formed on the moving plate;

[0014] A first spring is sleeved on the moving column, and one end of the first spring is fixedly connected to the inner wall of the cover plate.

[0015] Furthermore, the fixing mechanism comprises:

[0016] A fixing box, the fixing box being installed on the side opposite to the side where the sealing mechanism is installed;

[0017] The limit clamping column runs through the interior of the fixed box;

[0018] The second spring is sleeved on the outside of the limiting clamping column, and one end of the second spring is fixedly connected to the inner wall of the fixing box.

[0019] Furthermore, the vertical end of the fixing rod is arranged in a slope shape, the top end of the fixing box is arranged with a first slot matching the fixing rod, the inward end of the limiting card column is arranged in an inclined shape, the top end of the fixing rod is arranged with a second slot matching the limiting card column, and the interior of the fixing box is arranged with a sliding groove matching the limiting card column.

[0020] Furthermore, the rotating rod can be telescopically adjusted in length.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The utility model provides a sealing mechanism, which ensures that the ground film and the moisture evaporation cup are in sealed contact with the outside world. The rotation of the rotating rod drives the movable plate and the fixed rod to rotate through mechanical transmission. When the rotating rod rotates to a vertical state, the fixed rod is engaged with the limit clamping column, and the cover plate presses the movable plate tightly against the cup mouth of the moisture evaporation cup. The agricultural ground film is therefore tightly fitted with the cup mouth of the moisture evaporation cup to avoid gaps affecting the test data. After the test, the water retention rate of the sample is calculated by weighing the water inside the moisture evaporation cup to complete the test. This structure is conducive to the operation of sealing and connecting the ground film body and the moisture evaporation cup, avoiding the situation where water overflows through the gap between the moisture evaporation cup and the ground film body, thereby helping to improve the accuracy of the water retention test of the ground film body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the cover plate and the fixing box of the utility model;

[0025] Figure 3 For the utility model Figure 2 A is an enlarged structural diagram;

[0026] Figure 4 It is a partial cross-sectional view of the sealing mechanism in the utility model.

[0027] In the figure: 1. workbench; 2. electronic scale; 3. moisture evaporation cup; 4. sealing mechanism; 401. rotating rod; 402. cover plate; 404. moving column; 405. moving plate; 406. first spring; 407. fixing rod; 408. limit clamping column; 409. second spring; 5. ground film body; 6. fixing box; 7. sealing strip. DETAILED DESCRIPTION

[0028] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0029] The applicant believes that in the prior art, there is a gap between the ground film and the mouth of the water evaporation cup, which affects the accuracy of the ground film water retention test.

[0030] To this end, the applicant designed Figure 1-4The device for testing water retention of agricultural mulch film shown in the figure comprises a workbench 1, an electronic scale 2 is placed on the top of the workbench 1, a water evaporation cup 3 is placed on the top of the electronic scale 2, a mulch film body 5 is placed on the top of the water evaporation cup 3, and the testing device further comprises:

[0031] The sealing mechanism 4 is used to seal the ground film body 5 with the water evaporation cup 3 during the test while ensuring contact with the outside world. The sealing mechanism 4 is rotatably installed on the side of the water evaporation cup 3 through a hinge, and the inner circle of the lower surface in sealing contact with the water evaporation cup 3 is provided with a sealing strip 7 adapted to the groove on the water evaporation cup 3;

[0032] The fixing mechanism 6 is used to tightly install the sealing mechanism 4 and the water evaporation cup 3.

[0033] The agricultural mulch film water retention testing device of this embodiment, the sealing mechanism also includes:

[0034] A cover plate 402 is installed on the top side of the water evaporation cup 3 through a rotating rod 401, and a hollow is provided on the cover plate 402 for the ground film body to contact with the outside air;

[0035] The fixing rod 407 is disposed on the cover plate 402. The fixing rod 407 is fixedly disposed on the side of the cover plate 402 and extends downward for a section;

[0036] A movable column 404, the movable column 404 is fixedly arranged with the movable block 403, and is movably arranged inside the cover plate 402;

[0037] A moving plate 405, the moving plate 405 is provided with a through hole for installing the moving column 404, the moving column 404 passes through the through hole and passes through the fixing plate on the moving column 404 so that the moving plate 405 moves up and down on the moving column, and the moving plate 405 is provided with a hollow having the same size as the cover plate 402;

[0038] A first spring 406, which is sleeved on the moving column and has one end fixedly connected to the inner wall of the cover plate;

[0039] The size of the hollowing out on the cover plate 402 and the hollowing out on the movable plate 404 is not less than 80% of the area of ​​the agricultural mulch film in the test.

[0040] The agricultural mulch film water retention testing device of this embodiment, the fixing mechanism 6 includes:

[0041] A fixing box 601, which is installed on the side opposite to the side where the sealing mechanism is installed;

[0042] The limiting clamping column 408 passes through the interior of the fixing box 601;

[0043] The second spring 409 is sleeved on the outside of the limiting clamping column 408 , and one end of the second spring 409 is fixedly connected to the inner wall of the fixing box 6 .

[0044] In the agricultural mulch film water retention testing device of this embodiment, the vertical end of the fixing rod 407 is arranged in a slope shape, the top of the fixing box 601 is provided with a first slot matching the fixing rod 407, the inward end of the limiting card column 408 is arranged in an inclined shape, the top of the fixing rod 407 is provided with a second slot matching the limiting card column 408, and the interior of the fixing box 601 is provided with a sliding groove matching the limiting card column 408.

[0045] In the agricultural mulch film water retention testing device of this embodiment, the rotating rod 401 can be telescopically adjusted in length.

[0046] Working principle: When it is necessary to test the water retention of the produced agricultural mulch film, first, spread the agricultural mulch film sample to be tested on the cup mouth of the moisture evaporation cup 3, adjust the position of the sealing mechanism 4 and rotate it to the cup mouth, then align the sealing strip 7 on the movable plate 405 with the groove of the moisture evaporation cup 3 for installation, and insert the fixing rod 407 into the fixing box 601 and fix it through the limiting clamp 408. In this process, due to the force of the first spring 406, the cover plate 402 presses the movable plate 405 tightly against the cup mouth of the moisture evaporation cup 3, and the agricultural mulch film is therefore tightly fitted to the cup mouth of the moisture evaporation cup 3 to avoid gaps affecting the test data. After the test, the moisture inside the moisture evaporation cup 3 is weighed and compared with the moisture weight in the moisture evaporation cup 3 before the test, and the water retention rate of the sample is calculated to complete the test. The water retention rate calculation is a prior art, so it will not be described in detail.

[0047] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A device for testing the water retention of agricultural mulch film, comprising a workbench (1), an electronic scale (2) is placed on the top of the workbench (1), a water evaporation cup (3) is placed on the top of the electronic scale (2), and a mulch film body (5) is placed on the top of the water evaporation cup (3), characterized in that The test setup also includes: A sealing mechanism (4), the sealing mechanism (4) is used to seal the ground film body (5) and the water evaporation cup (3) during the test while ensuring that the ground film body (5) is in contact with the outside world. The sealing mechanism (4) is rotatably mounted on the side of the water evaporation cup (3) through a hinge, and the inner circle of the lower surface in sealing contact with the water evaporation cup (3) is provided with a sealing strip (7) adapted to the groove on the water evaporation cup (3); A fixing mechanism (6) is used to tightly mount the sealing mechanism (4) and the water evaporation cup (3).

2. The device for testing water retention of agricultural mulch film according to claim 1, characterized in that: The sealing mechanism also includes: A cover plate (402), the cover plate being mounted on the top side of the water evaporation cup (3) via a rotating rod (401), and the cover plate (402) being provided with a hollow portion for the ground film body to contact with the outside air; The fixing rod (407) is arranged on the cover plate (402), and the fixing rod (407) is fixedly arranged on the side of the cover plate (402) and extends downward for a section; A movable column (404), wherein the movable column (404) is fixedly arranged with the movable block (403) and movably arranged inside the cover plate (402); A movable plate (405), wherein a through hole for mounting a movable column (404) is formed on the movable plate (405), wherein the movable column (404) passes through the through hole and passes through a fixed plate on the movable column (404) so ​​that the movable plate (405) moves up and down on the movable column, and a hollow portion having the same size as the cover plate (402) is formed on the movable plate (405); A first spring (406), wherein the first spring (406) is sleeved on the movable column and one end of the first spring is fixedly connected to the inner wall of the cover plate.

3. The device for testing water retention of agricultural mulch film according to claim 2, characterized in that: The fixing mechanism (6) comprises: A fixing box (601), the fixing box (601) being installed on the side opposite to the side where the sealing mechanism is installed; The limiting clamping column (408) passes through the interior of the fixing box (601); A second spring (409), wherein the second spring (409) is sleeved outside the limiting clamping column (408), and one end of the second spring is fixedly connected to the inner wall of the fixing box (601).

4. The device for testing water retention of agricultural mulch film according to claim 3, characterized in that: The vertical end of the fixing rod (407) is arranged in an inclined shape, the top end of the fixing box (601) is arranged with a first slot matching the fixing rod (407), the inward end of the limiting clamping column (408) is arranged in an inclined shape, the top end of the fixing rod (407) is arranged with a second slot matching the limiting clamping column (408), and the interior of the fixing box (601) is arranged with a sliding slot matching the limiting clamping column (408).

5. The device for testing water retention of agricultural mulch film according to claim 2, characterized in that: The rotating rod (401) is telescopic and can be adjusted in length.

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