CN100446653C - Cold Plasma Seed Treater - Google Patents

Abstract

The invention relates to a cold plasma seed treatment instrument, comprising a cylinder (3) having a feed inlet (6), a discharge outlet (7), a vacuum port (14) and an air inlet (15), and a vacuum pump The port (14) is connected to the vacuum pump (8) through a pipeline, and the cylindrical body (3) is provided with parallel upper and lower electrode plates (1) and a seed conveyor belt (4) driven by a power device, and the seed conveyor belt (4 ) through the area between the upper and lower electrode plates (1), characterized in that: the upper and lower electrode plates (1) are connected to the radio frequency source through the radio frequency output line (25) respectively, and the upper and lower electrode plates (1) A metal shield (2) is arranged on the periphery. The invention can not only activate the internal energy of seeds, improve the germination rate and quality of seeds, but also has high treatment efficiency. The invention is suitable for treating many seeds of crops, flower seeds and Chinese herbal medicine seeds and the like.

Description

Cold Plasma Seed Treater

technical field

The invention relates to a seed treatment device, in particular to a cold plasma seed treatment instrument.

Background technique

In agricultural production, seeds of various crops usually have a selection and treatment process before sowing. Seed selection and seed treatment have a direct impact on their germination, production, yield, and nutritional components of fruits. In recent years, the technology of using plasma to treat crop seeds has been adopted, such as a low-temperature plasma seed treatment machine disclosed in Chinese patent CN1203752C, which generates a certain degree of vacuum in the cavity, and uses radio frequency sources and induction coils to generate glow discharge , to activate the internal energy of crop seeds, so as to achieve the purpose of increasing yield and improving product quality. However, this kind of seed treatment machine has the following disadvantages. The use of induction coils will generate eddy currents and magnetic short circuits, resulting in a sharp increase in power consumption, resulting in waste of energy, and at the same time the processing efficiency is also greatly reduced. There is a foreign technology that uses radio frequency source to connect two parallel electrode plates to generate glow discharge area to treat seeds, but because glow discharge will also be generated between the two electrode plates and the inner wall of the cavity, resulting in a sharp increase in power consumption and a waste of energy , and cannot generate a concentrated glow discharge area between the two plates, so the treatment efficiency for crop seeds is still very low, and no obvious effect can be achieved.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a cold plasma seed treatment instrument that can not only activate the internal energy of seeds, increase the germination rate and quality of seeds, but also have high treatment efficiency.

The technical solution to achieve the above purpose is: a cold plasma seed treatment instrument, including a cylinder body with a feed inlet, a discharge outlet, a vacuum port and an air inlet, the vacuum port is connected to the vacuum pump through a pipeline, and the cylinder is provided with a There are parallel upper and lower electrode plates and a seed conveyor belt driven by the power device, and the seed conveyor belt passes through the area between the upper and lower electrode plates, and the upper and lower electrode plates are respectively connected to the radio frequency source through the radio frequency output line, and Metal shielding covers are arranged on the periphery of the upper and lower electrode plates.

After adopting the above technical scheme, a glow discharge area is formed between the two point plates connected to the radio frequency source through the radio frequency output line, and the seeds on the seed conveyor belt pass through the glow discharge area, and the electrons, ions, Excited molecules, atoms, free radicals and other active particles, as well as the activation of ultraviolet light and X-rays on the internal energy of crop seeds, increase the germination rate of crops, resist drought, disease, and grow vigorously, thereby increasing yield and improving product quality the goal of. Since the periphery of the two electrode plates is provided with a metal shield, the metal shield can prevent the glow discharge between the electrode plate and the inner wall of the cylinder, thereby forming a weak plasma area between the metal shield and the inner wall of the cylinder, avoiding unnecessary The power consumption ensures that the glow discharge is concentrated between the two electrode plates, so the treatment efficiency of the seeds is greatly improved.

Description of drawings

Fig. 1 is the structural representation of cold plasma seed treatment instrument of the present invention;

Fig. 2 is a schematic structural diagram of the metal shield of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 and 2, a cold plasma seed treatment instrument comprises a cylinder body 3 with a feed port 6, a discharge port 7, a vacuum port 14 and an air inlet 15, the vacuum port 14 and the vacuum pump 8 Connected by pipes, parallel upper and lower electrode plates 1 and a seed conveyor belt 4 driven by the power device are arranged in the cylinder body 3, and the seed conveyor belt 4 passes through the area between the upper and lower electrode plates 1, and the upper and lower electrode plates 1 The electrode plates 1 are respectively connected to the radio frequency source 23 through the radio frequency output lines 25 , and the outer periphery of the upper and lower electrode plates 1 is provided with a metal shield 2 . The power unit is made up of speed-regulating motor 16 and two guide wheels 5, wherein one guide wheel is fixedly connected with the main shaft of the speed-regulating motor as a driving wheel, and the other guide wheel 5 is as a driven guide wheel, and the seed conveyor belt 4 is installed on the guide wheel. On the wheel 5, the guide wheel 5 rotates and can drive the seed conveyor belt 4 to advance. The air inlet 15 communicates with the rotameter 24 on the control cabinet through a pipe, and the rotameter 24 communicates with an air inlet valve 21 through a pipe.

As shown in FIG. 1 , a gauge tube 13 is arranged on the cylinder body 3 , and the gauge tube 13 is connected to a vacuum instrument 22 through wires. The vacuum degree of the inner cavity of the cylinder body 3 can be measured by the gauge tube 13 and the vacuum gauge 22. When the vacuum is too high, the air intake valve 21 can be opened to replenish air from the air intake port 15. When vacuum degree is too low, start vacuum pump 8 to vacuumize. This structure can maintain a proper vacuum to ensure the best processing efficiency.

As shown in FIG. 1 , mirror windows 11 are provided at both ends of the cylinder body 3 . Through the viewing mirror window 11, the running conditions of the seed conveyor belt in the inner cavity of the cylinder body 3 can be observed, so that measures can be taken in time when a failure occurs.

As shown in Figure 1, the feed port 6 is provided with a seed storage tank 20, the inner cavity of the seed storage tank 20 communicates with the inner cavity of the cylinder body 3 through the bellows 10, and at the outlet of the seed storage tank 20 A ball valve 9 is provided. This structure can ensure that a certain degree of vacuum is also maintained in the seed storage barrel 20 to prevent the seeds from deteriorating. At the same time, the bellows 10 has good cushioning properties, which can prevent it from being damaged when subjected to vibration. In addition, a sight glass window 11 is also installed on the wall of the seed storage tube 20, so as to know the storage amount of seeds in the seed storage tube 20.

As shown in FIG. 1 , a blanking bracket 18 and a height adjusting plate 19 are provided at the feed port 6 .

As shown in FIG. 1 , a seed storage cylinder 20 ′ is also provided at the discharge port 7 , and a discharge valve 17 is provided at the outlet of the seed storage cylinder 20 ′.

As shown in FIG. 1 , an air release valve 12 is installed on the cylinder body 3 , and the air can be released from the air release valve 12 when there is too much gas in the inner cavity of the cylinder body 3 .

The working process of the present invention is as follows: the seed storage tank 20 is filled with seeds, all ball and disc valves are closed, the vacuum pump 8 is started, the rotameter 24 is adjusted to a given vacuum degree, the radio frequency source 23 is turned on, and adjusted to a given vacuum degree. power. Adjust the speed regulating motor 16 to a given value, adjust the height adjustment plate 19, open the ball valve 9 on the seed storage barrel 20, the seeds enter the seed conveyor belt 4, pass through the glow discharge area between the two motor plates 1, and then Fall into the seed storage tank 20' from the discharge port 7 to complete the processing. After the seed storage barrel 20' is filled with processed crop seeds, the buzzer sends a signal, and the radio frequency source 23 stops working.

The main technical indicators of the present invention are as follows: the volume of the working vacuum chamber is Φ280mm×2000mm, the radio frequency (13.56MH ₂ ) is 700W, the working vacuum is 80-150Pa, the time is 10s-25s, and the processing capacity is 38Kg each time (taking soybeans as a reference) The time is about 10 minutes.

For bulk crop seeds such as wheat and rice, the volume of the working vacuum chamber is Φ500mm×2500mm radio frequency (13.56MH ₂ ) 2000W, the working vacuum degree is 80-150Pa, the time is 10s-25s, and the processing capacity is 100Kg (with rice as a reference) time is about 10 minutes.

The invention is suitable for treating most seeds of crops, flower seeds and Chinese herbal medicine seeds and the like.

Claims (5)

1, a kind of seed treatment instrument of cold plasma, comprise and have charging aperture (6), discharging opening (7), the cylindrical shell (3) of vacuum orifice (14) and air inlet (15), vacuum orifice (14) is connected by pipeline with vavuum pump (8), be provided with in the cylindrical shell (3) parallel on, lower electrode plate (1) and the seed conveyer belt (4) that drives by power set, and seed conveyer belt (4) passes, zone between the lower electrode plate (1), it is characterized in that: on, lower electrode plate (1) is connected with radio frequency source (23) by radio frequency output line (25) respectively, and on, the outer periphery of lower electrode plate (1) is equipped with metallic shield (2).

2, seed treatment instrument of cold plasma according to claim 1 is characterized in that: cylindrical shell (3) is provided with regulates (13), regulates (13) and is connected with a vacuscope (22) by lead.

3, seed treatment instrument of cold plasma according to claim 1 and 2 is characterized in that: the two ends of cylindrical shell (3) are provided with visor window (11).

4, seed treatment instrument of cold plasma according to claim 1 and 2 is characterized in that: charging aperture (6) is provided with seed material storage tube (20), and the inner chamber of this seed material storage tube (20) is communicated with cylindrical shell (3) inner chamber by bellows (10).

5, seed treatment instrument of cold plasma according to claim 1 and 2 is characterized in that: charging aperture (6) locates to be provided with blanking support (18) and DOCK LEVELER (19).

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