Novel device for efficiently pre-cooling cut chrysanthemum

Abstract

The utility model relates to the technical field of agricultural post-harvest treatment, and discloses a novel device for efficiently pre-cooling cut chrysanthemum, which comprises a punching pre-cooling barrel which is a barrel body in the shape of a circular truncated cone, a plurality of air holes are formed in the side wall of the barrel body, and the air holes are uniformly distributed in a layered manner; and the water insulation assembly is a disc-shaped plastic assembly and is arranged in the punching pre-cooling barrel, and a plurality of small holes are evenly distributed in a disc of the water insulation assembly. Cold storage pre-cooling and cold water pre-cooling are combined, circulation of cold air flow inside and outside the barrel is accelerated through the design of the vent holes of the punching pre-cooling barrel, meanwhile, stems are cooled through cold water, plants are prevented from being dehydrated, and the pre-cooling time is greatly shortened. The flower head and the leaves are physically isolated from cold water through the design of the water isolation assembly, rot and diseases caused by water vapor contamination are avoided, meanwhile, airflow distribution is guided, the cooling efficiency of all parts of the cut chrysanthemum is improved, and the problem of uneven cooling in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of postharvest processing technology of agriculture, and specifically relates to a novel device for efficient precooling of cut chrysanthemums. BACKGROUND

[0002] Cut chrysanthemum postharvest precooling is a key link for prolonging the shelf life and reducing respiratory loss. Studies have shown that the core temperature of cut chrysanthemums needs to be reduced from above 30 DEG C to 2-5 DEG C within 2 hours after harvesting, otherwise the petal browning rate will increase by more than 40%. Precooling technology removes field heat quickly, inhibits ethylene release and microbial activity, and directly affects the commodity value.

[0003] The existing precooling technology has many deficiencies: traditional cold storage precooling places cut chrysanthemums in a low-temperature cold storage (0-4 DEG C) for natural convection cooling, which is low in cost and simple in operation, but the cooling rate is slow, and it takes 8-12 hours, and the stacking center temperature is uneven; forced ventilation precooling increases a fan in the cold storage, and the negative pressure forces cold air to penetrate through the gap of the packaging box, and the precooling efficiency is improved by 50% compared with the cold storage precooling, and the cooling time is shortened to 4-6 hours, but high air speed easily leads to petal dehydration, which needs to be carried out in an environment with high air humidity; vacuum precooling quickly absorbs heat through water evaporation in a vacuum environment, and the cooling is completed within 5-20 minutes, but the existing equipment has a high investment, and a single unit costs more than 500,000 yuan, and it is sensitive to the water content of chrysanthemums; cold water precooling immerses the flower stems in 0-2 DEG C cold water, and uses conduction to reduce the temperature, and the petal cooling effect is poor, and water vapor may cause diseases.

[0004] Therefore, there is an urgent need for a cut chrysanthemum precooling device with low cost, high efficiency and uniformity, which can avoid local uneven cooling, petal dehydration and water vapor causing diseases. UTILITY MODEL CONTENTS

[0005] (I) Technical problem solved

[0006] In view of the deficiencies of the prior art, the utility model provides a novel device for efficient precooling of cut chrysanthemums, so as to realize low-cost, high-efficiency and uniform precooling, and avoid local uneven cooling, petal dehydration and water vapor causing diseases.

[0007] (II) Technical scheme

[0008] In order to achieve the above purpose, the utility model is implemented by the following technical scheme: a novel device for efficient precooling of cut chrysanthemums, comprising:

[0009] The punching precooling barrel (1) is a circular truncated cone barrel, made of environment-friendly plastic material, and has an outer diameter of 40 cm, an inner diameter of 34.5 cm at the top, a bottom diameter of 26 cm, a barrel height of 42.5 cm, and 12 air vents (11) on the barrel side wall, which are evenly distributed in three layers, and each air vent (11) has a diameter of 6 cm.

[0010] A water isolation component (2) is a disc-shaped plastic component with a diameter of 27.5 cm, which is arranged in the perforated pre-cooling barrel (1) at a distance of 10 cm from the bottom of the barrel, and 10 small holes (21) are uniformly distributed on the disc of the water isolation component (2), and the diameter of each small hole (21) is 3.5 cm.

[0011] Optionally, three supporting legs (22) are arranged below the water isolation component (2), and the supporting legs (22) are used for supporting the water isolation component (2) and preventing the water isolation component (2) from tilting and overturning.

[0012] Optionally, universal wheels (12) are arranged at the bottom of the perforated pre-cooling barrel (1), and the universal wheels (12) are used for facilitating the transportation and movement of the perforated pre-cooling barrel (1).

[0013] Optionally, 3 DEG C cold water can be injected into the perforated pre-cooling barrel (1), and the height of the injected cold water is 5-8 cm, and the cold water is used for cooling the stems of cut chrysanthemums and preventing the plants from dehydrating.

[0014] Optionally, the perforated pre-cooling barrel (1) is used in cooperation with a 3 DEG C cold storage, and the air vent (11) is used for accelerating the circulation of cold air flow inside and outside the perforated pre-cooling barrel (1), so that the cut chrysanthemums are rapidly cooled.

[0015] (Three) beneficial effects

[0016] The novel device for efficiently pre-cooling cut chrysanthemums has the following beneficial effects:

[0017] The novel device combines cold storage pre-cooling and cold water pre-cooling, accelerates the circulation of cold air flow inside and outside the barrel through the design of the air vent of the perforated pre-cooling barrel, simultaneously cools the stems by using cold water and prevents the plants from dehydrating, greatly shortens the pre-cooling time, and can shorten the pre-cooling time from 8-12 hours to about 4 hours compared with the traditional cold storage pre-cooling.

[0018] The design of the water isolation component physically isolates the flower heads and leaves from the cold water, avoids the rotting and diseases caused by water vapor contamination, simultaneously guides the distribution of air flow, improves the cooling efficiency of each part of the cut chrysanthemums, and solves the problem of uneven cooling in the prior art.

[0019] The device has simple structure, adopts environment-friendly plastic material, has low cost, and is suitable for popularization to small and medium-sized production. DRAWINGS

[0020] Figure 1 It is a structure schematic view of the perforated pre-cooling barrel of the novel device;

[0021] Figure 2 It is a structure schematic view of the water isolation component of the novel device;

[0022] Figure 3 The structure diagram of the water-proof assembly with a supporting leg is shown in the utility model.

[0023] In the figure: 1, punch pre-cooling bucket; 11, air hole; 12, universal wheel; 2, water-proof assembly; 21, small hole; 22, supporting leg. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Embodiment 1

[0026] A new device for efficient pre-cooling of cut chrysanthemums, as shown in Figure 1 and Figure 2 , comprises a punch pre-cooling bucket and a water-proof assembly. The punch pre-cooling bucket is a circular table-shaped environment-friendly plastic bucket body, with an outer diameter of 40 cm at the upper opening, an inner diameter of 34.5 cm, a lower bottom diameter of 26 cm, a bucket height of 42.5 cm, and 12 air holes with a diameter of 6 cm evenly distributed in 3 layers on the side wall of the bucket body. The water-proof assembly is a disc-shaped plastic assembly with a diameter of 27.5 cm, with 10 small holes with a diameter of 3.5 cm evenly distributed on the disc, and arranged at a distance of 10 cm from the bottom of the bucket.

[0027] In use, the cut chrysanthemums are pruned and classified within 30 minutes after harvesting, bundled at 10 branches per bundle, and then soaked in water to allow the flower branches to fully absorb water. Then, the pre-cooling punch water bucket is moved in. 3℃ cold water is poured into the bucket to a depth of 5-8 cm, the water-proof assembly is placed, 10 bundles of cut chrysanthemums are evenly passed through the holes of the assembly, and then the pre-cooling bucket is transferred to a 3℃ cold storage. The air holes are used to accelerate the circulation of cold air inside and outside the bucket, the cold water is used to cool the stems and prevent the plant from dehydrating, and the water-proof assembly is used to isolate the water vapor to prevent it from causing diseases of the leaves or flowers. When the temperature of the flowers is reduced to 3±0.5℃ (about 4 hours), the flowers are packed and transported.

[0028] Embodiment 2

[0029] The same as embodiment 1, except that, as shown in Figure 3 , three supporting legs are arranged below the water-proof assembly to prevent the water-proof assembly from tilting and overturning, and to ensure the stability of the cut chrysanthemums during the pre-cooling process.

[0030] Embodiment 3

[0031] The same as embodiment 1, except that universal wheels are installed below the punch pre-cooling bucket to facilitate the movement of the device during the cold storage and transportation process, and to improve the convenience of operation.

[0032] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new device for efficient precooling of cut chrysanthemum, characterized by: Include: Punching pre-cooling barrel (1), the punching pre-cooling barrel (1) is circular truncated cone barrel, and a plurality of air holes (11) are arranged on the side wall of the barrel, and the air holes (11) are evenly distributed in three layers; Waterproof assembly (2), the waterproof assembly (2) is a disc-shaped plastic assembly, which is arranged in the punching pre-cooling barrel (1), and a plurality of small holes (21) are evenly distributed on the disc of the waterproof assembly (2).

2. A new device for efficient precooling of cut chrysanthemum according to claim 1, characterized in that: Three supporting legs (22) are arranged below the waterproof assembly (2), and the supporting legs (22) are used for supporting the waterproof assembly (2) and preventing the waterproof assembly (2) from tilting and overturning.

3. A new device for efficient precooling of cut chrysanthemum according to claim 1, characterized in that: A universal wheel (12) is arranged at the bottom of the punching pre-cooling barrel (1), and the universal wheel (12) is used for facilitating the transportation and movement of the punching pre-cooling barrel (1).

4. A new device for efficient precooling of cut chrysanthemum according to claim 1, characterized in that: The punching pre-cooling barrel (1) is a circular truncated cone barrel, which is made of environment-friendly plastic material, and has an outer diameter of 40 cm, an inner diameter of 34.5 cm, a bottom diameter of 26 cm, a barrel height of 42.5 cm, and 12 air holes (11) arranged on the side wall of the barrel, and the air holes (11) are evenly distributed in three layers, and the diameter of a single air hole (11) is 6 cm.

5. A new device for efficient precooling of cut chrysanthemum according to claim 1, characterized in that: The waterproof assembly (2) is a disc-shaped plastic assembly with a diameter of 27.5 cm, which is arranged in the punching pre-cooling barrel (1) and is 10 cm away from the bottom of the barrel, and 10 small holes (21) are evenly distributed on the disc of the waterproof assembly (2), and the diameter of a single small hole (21) is 3.5 cm.

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