Hydroponic field planting cup and preparation method thereof

Abstract

The invention relates to a hydroponic planting cup and a preparation method thereof, and the preparation method comprises the following steps: mixing a waterproof agent, a hardening agent and paper pulp in proportion, and blending into slurry; pouring the blended slurry into a slurry tank of a forming machine, adsorbing the slurry on the surface of a fixed-value cup wet blank mold through negative pressure to form a wet blank, and demolding; and drying the demolded wet blank, then placing the demolded wet blank on a hot-pressing mold for shaping, and trimming to obtain the required hydroponic planting cup. The hydroponic planting cup prepared from the waste paper raw material has high water absorption and water retention, can provide water supply required by plants, and is safe and pollution-free; the degradable plastic has natural degradability, meets the requirement of environmental protection, and is beneficial to reduction of waste generation and resource waste.

Description

Technical Field

[0001] The invention relates to the technical field of hydroponic planting in plant factories, and in particular to a hydroponic planting cup and a preparation method thereof. Background Art

[0002] Hydroponics is a soilless cultivation method for plants. A nutrient solution replaces natural soil to provide water, nutrients, warmth, and other growth factors to the plant, enabling normal growth and the completion of its life cycle. Hydroponics offers advantages such as cleanliness, hygiene, and environmental friendliness. Planting cups are a common accessory in soilless cultivation, widely used in greenhouses to secure and protect plant roots and promote healthy growth.

[0003] Currently, the hydroponic planting cups used in facility cultivation are mainly made of polyethylene, polyvinyl chloride and other materials. They have the advantages of low price and easy processing and molding, and have been widely used in people's lives and work.

[0004] The applicant discovered that the hydroponic planting cups commonly used in the prior art have the following technical problems: During use, it will have an adverse effect on plant growth, easily cause lasting pollution to the ecological environment such as soil and water bodies, and is not conducive to protecting the ecological balance. Summary of the Invention

[0005] In response to the problems existing in the prior art, the purpose of the present invention is to provide a hydroponic planting cup and a preparation method thereof, which can provide a suitable growth environment for plants, will not cause lasting pollution to the ecological environment such as soil and water bodies, and help maintain ecological balance.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A method for preparing a hydroponic planting cup comprises the following steps: Mix the waterproofing agent, hardener and paper pulp in proportion to prepare a slurry; Pour the prepared slurry into the slurry tank of the molding machine, and adsorb it on the surface of the fixed value cup wet embryo mold through negative pressure to form a wet embryo and then demould it; The wet embryo after demoulding is dried, then placed on a hot pressing mold for shaping, and trimmed to obtain the required hydroponic planting cup.

[0007] Furthermore, the pulp preparation process includes crushing the collected waste paper raw materials, screening the paper scraps to a mesh size of 50 mesh, and then mixing the paper scraps with water, with a mass ratio of paper scraps to water being 1:100.

[0008] Furthermore, the hardener accounts for 8%-10% of the total mass of the pulp; and the waterproofing agent accounts for 8%-10% of the total mass of the pulp.

[0009] Furthermore, the prepared slurry was stirred to prevent the slurry from agglomerating, with a stirring speed of 700 r / min and a stirring time of 10 min.

[0010] Furthermore, the fixed value cup wet embryo mold includes a punch mold, a connecting frame, a die mold, a lower through hole mold and a fixed support frame arranged in sequence from top to bottom; the punch mold and the die mold are arranged correspondingly, the connecting frame is used to connect adjacent fixed value cups, the lower through hole mold is used to leave a through hole at the bottom of the fixed value cup, and the fixed support frame is used to fix the lower through hole mold and support the die mold.

[0011] Furthermore, the wet embryo after demoulding is placed in a hot air drying oven for drying at a drying temperature of 90°C.

[0012] Furthermore, the process parameters of the hot pressing mold include a heating temperature of 150-200° C. and a pressure range of 1-2 MPa.

[0013] Furthermore, the hot pressing mold includes a hot pressing shaping convex mold and a hot pressing shaping concave mold that are arranged accordingly.

[0014] A hydroponic planting cup is prepared by adopting the above-mentioned preparation method of the hydroponic planting cup.

[0015] Furthermore, two symmetrical through holes are left at the bottom of the hydroponic planting cup.

[0016] In general, the present invention has the following advantages: 1. The hydroponic planting cup made from waste paper does not contain harmful chemicals and is safer to use. It has high water absorption and water retention, can provide the water supply required by plants, and is safe and pollution-free.

[0017] 2. It can provide stable support for plants, help plants maintain an upright growth posture, is easy to mechanize and operate, and facilitates automated production management.

[0018] 3. It is naturally degradable and will decompose naturally within a certain period of time, reducing the impact on the environment, meeting environmental protection requirements, and helping to reduce waste generation and resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a flow chart of the preparation method of the present invention.

[0020] FIG2( a ) is a schematic diagram of the three-dimensional structure of the hydroponic planting cup of the present invention.

[0021] FIG2( b ) is a schematic diagram of the top view of the hydroponic planting cup of the present invention.

[0022] FIG2( c ) is a schematic side view of the hydroponic planting cup of the present invention.

[0023] Figure 3 It is an assembly diagram of the wet embryo forming mold of the present invention.

[0024] Figure 4 It is an assembly diagram of the hot pressing mold of the present invention.

[0025] In the picture: 1-Punch mold; 2-Connecting frame; 3-Concave mold; 4-Lower through-hole mold; 5-Fixed support frame; 6-Hot pressing and shaping punch; 7-Hot pressing and shaping concave mold. DETAILED DESCRIPTION

[0026] The hydroponic planting cups in the prior art are usually made of plastic. However, due to the poor water and air permeability of the plastic planting cups, harmful substances will be released during use, which will have an adverse effect on plant growth to a certain extent. In addition, in agricultural production, the plastic planting cups used in large quantities are often difficult to recycle and dispose of, and easily form "white garbage". To this end, the present application provides a paper hydroponic planting cup and a preparation method thereof. The paper environmentally friendly hydroponic planting cup is conducive to plant growth, and its application can reduce the generation of plastic waste from the source, effectively alleviate the problem of white pollution, and create a cleaner and healthier environment for agricultural production.

[0027] The present invention will be described in further detail below. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.

[0028] Example 1 like Figure 1 As shown, this embodiment provides a hydroponic planting cup and its preparation method. The method comprises mixing a waterproofing agent, a hardener, and paper pulp in a certain proportion to form a slurry. The prepared slurry is poured into the slurry tank of a forming machine, and is adsorbed on the surface of a fixed cup wet embryo mold by negative pressure to form a wet embryo. After demolding, the process is then dried, hot-pressed, and trimmed to produce a degradable hydroponic planting cup. The method specifically comprises the following steps: 1) Paper scrap preparation: The collected waste paper raw materials are crushed and the screened paper scraps have a mesh size of 50 mesh.

[0029] 2) Pulp preparation: Mix paper scraps and water in a mass ratio of 1:100.

[0030] 3) Slurry Preparation: Mix the hardener and waterproofing agent with the paper pulp, with the hardener accounting for 10% of the total pulp mass and the waterproofing agent accounting for 10% of the total pulp mass. Stir steadily and evenly at 700 rpm to prevent lumps in the slurry. Stir for 10 minutes.

[0031] 4) Wet embryo preparation: Figure 3As shown, the fixed cup concave mold 3 is immersed in the slurry of the pulp forming machine, and is demoulded after negative pressure adsorption and extrusion molding by the convex mold 1. The wet embryo is then placed in a hot air drying oven for drying, and the temperature is set to 90°C; Figure 4 The hot pressing mold is used for hot pressing and shaping, the heating temperature is 150-200℃, the pressure range is 1-2MPa, and finally the edge is trimmed to obtain a degradable and environmentally friendly hydroponic fixed value cup.

[0032] As shown in Figure 2(a), Figure 2(b) and Figure 2(c), the prepared degradable and environmentally friendly hydroponic planting cup has an overall size of Φ64*59mm, a thickness of 2mm, and a weight of (5±0.5)g / piece. There is no flange on the top of the hydroponic planting cup, and the distance between the two connected cup bodies is 15mm, which is convenient for subsequent cutting. A pair of symmetrical through holes of 2mm*1.5mm are left at the bottom of the hydroponic planting cup to provide sufficient oxygen and water for the crop roots.

[0033] like Figure 3 As shown, the planting cup wet embryo mold includes a male mold 1, a connecting frame 2, a female mold 3, a lower through-hole mold 4, and a fixed support frame 5.

[0034] like Figure 4 As shown, the hot pressing mold includes a hot pressing shaping convex mold 6 and a hot pressing shaping concave mold 7 which are arranged accordingly.

[0035] Example 2 Different from Example 1, the contents of the hardener and the waterproofing agent in step 1 are 8% and 8% respectively, and other parameters remain unchanged.

[0036] Example 3 Different from Example 1, the contents of the hardener and the waterproofing agent in step 1 are 8% and 10% respectively, and other parameters remain unchanged.

[0037] Example 4 Different from Example 1, the contents of the hardener and the waterproofing agent in step 1 are 10% and 8%, respectively, and other parameters remain unchanged.

[0038] The products obtained in the above examples were tested for different indicators. The samples were tested for rebound rate, cohesion, and hardness using a TMS-Pro food property analyzer produced by FTC Corporation of the United States. The samples were tested for degradation rate using the soil burial method. The samples were tested for water absorption and water holding capacity using the hydroponic method. All samples were tested under the same conditions and environment. The test results are shown in Table 1.

[0039] Table 1 Comparison table of performance test indicators of the embodiments The above embodiments are preferred implementations of the present invention, but the implementations of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A method for preparing a hydroponic planting cup, characterized in that: The following steps are included: Mix the waterproofing agent, hardener and paper pulp in proportion to prepare slurry; Pour the prepared slurry into the slurry tank of the molding machine, adsorb it on the surface of the fixed value cup wet embryo mold through negative pressure to form a wet embryo, and then demould it; The wet embryo after demoulding is dried, and then placed on a hot pressing mold for shaping, and trimmed to obtain the required hydroponic planting cup.

2. The preparation method according to claim 1, characterized in that: The preparation process of the pulp includes crushing the collected waste paper raw materials, screening the paper scraps to a mesh size of 50 mesh, and then mixing the paper scraps with water, and the mass ratio of the paper scraps to water is 1:

100.

3. The preparation method according to claim 1, characterized in that: The hardener accounts for 8%-10% of the total mass of the pulp; the waterproofing agent accounts for 8%-10% of the total mass of the pulp.

4. The preparation method according to claim 1, characterized in that: The prepared slurry was stirred to prevent caking, the stirring speed was 700r / min, and the stirring time was 10min.

5. The preparation method according to claim 1, characterized in that: The fixed value cup wet blank mold includes a male mold, a connecting frame, a female mold, a lower through hole mold and a fixed support frame which are arranged in sequence from top to bottom; the male mold and the female mold are arranged correspondingly, the connecting frame is used to connect adjacent fixed value cups, the lower through hole mold is used to leave a through hole at the bottom of the fixed value cup, and the fixed support frame is used to fix the lower through hole mold and support the female mold.

6. The preparation method according to claim 1, characterized in that: The wet embryo after demoulding is placed in a hot air drying oven for drying at a drying temperature of 90°C.

7. The preparation method according to claim 1, characterized in that: The process parameters of the hot pressing mold include heating temperature 150-200℃; pressure range 1-2MPa.

8. The preparation method according to claim 1, characterized in that: The hot pressing mold comprises a hot pressing shaping convex mold and a hot pressing shaping concave mold which are arranged correspondingly.

9. A hydroponic planting cup, characterized in that: The hydroponic planting cup is prepared by the preparation method of any one of claims 1 to 8.

10. The hydroponic planting cup according to claim 9, characterized in that: Two symmetrical through holes are left at the bottom of the hydroponic planting cup.

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