Raw material metering device

Abstract

The utility model belongs to the field of raw material conveying equipment for seed treatment, and provides a raw material metering device which comprises a raw material tank, a metering tank and compressed air, the raw material tank is connected with the metering tank through a pipeline, a feeding valve is arranged on the pipeline, a metering liquid level meter is arranged on the metering tank, and the upper end of the metering tank is connected with a negative pressure pipe and the compressed air through a three-way valve A; an outlet valve is arranged at the lower end of the metering tank, and feeding metering and discharging of the metering tank are achieved by controlling the feeding valve, the three-way valve A and the outlet valve. According to the utility model, the compressed air, the negative pressure pipe, the metering tank and the valve are matched with one another, the feeding and the discharging of the metering tank are realized under the control of the controller, the dosage of raw materials is accurately metered through the metering liquid level meter, and the raw materials are automatically controlled to be accurately added, so that the labor is reduced, and the large-batch production is facilitated.

Description

Technical Field

[0001] The utility model relates to raw material conveying equipment for seed processing, in particular to a raw material metering device. Background Art

[0002] With the continuous development and growth of agriculture, the level of agricultural planting is also constantly improving. Seed treatment plays a key role in seed germination and growth and development in the seedling stage, and can reduce the damage of pests and diseases to seeds; including seed dressing agents, seed mixing agents, seed soaking agents, etc. Seed dressing agents include: active substances, film-forming agents, other additives (dispersants, penetrants, rheological additives, antifreeze agents, defoaming agents, etc.), fillers, auxiliary ingredients (micro-fertilizers, plant growth regulators, water retention agents, oxygen supply agents, etc.), warning colors, etc.; seed mixing agents include: active substances, solvents, auxiliary materials (dyes, etc.); active substances are the main formula of seed dressing agents, and are the main part of the pest and disease control function. It includes fungicides, insecticides, nematicides, plant growth regulators and corresponding protective agents, trace elements, etc. Therefore, different agents need to be formulated in proportion during the preparation of seed dressing agents, while in the conventional processing process, different agents are added manually in proportion. The amount of addition cannot be accurately controlled during the addition process, which is time-consuming and labor-intensive. In addition, in the conventional seed mixing process, the seed dressing agent is diluted and directly poured on the surface of the seeds and mixed evenly with a mixer. This method is feasible for small batches of seeds, but for large batches of seeds, it will cause a lot of manual workload, which is time-consuming and labor-intensive. At the same time, the addition of the seed dressing agent will have errors due to manual operation. Therefore, it is a problem that needs to be solved urgently. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and to provide a raw material metering device which improves the efficiency of stirring and coating the seed treatment agent, reduces labor, ensures the accuracy of the amount of seed treatment agent added, reduces manual addition errors, and realizes large-scale seed mixing.

[0004] The technical solution of the utility model is: a raw material metering device, comprising a raw material tank, a metering tank and compressed air, the raw material tank is connected to the metering tank through a pipeline, a feed valve is arranged on the pipeline, a metering liquid level gauge is arranged on the metering tank, the upper end of the metering tank is connected to a negative pressure pipe and compressed air through a three-way valve A, and the lower end of the metering tank is provided with an outlet valve, and the feed metering and discharge of the metering tank are realized by controlling the feed valve, the three-way valve A and the outlet valve.

[0005] The advantage of this solution is that through the cooperation between compressed air, negative pressure pipe, metering tank and valve, and the transmission of numerical values ​​to the controller through the metering liquid level gauge, the controller controls each valve to enable the metering tank to realize feeding, and controls the feeding to reach the set value of the liquid level gauge, and then all the raw materials in the metering tank are discharged from the discharge valve through the control of compressed air and valves, and the raw materials are transported to the mixing tank or the stirring tank to ensure the accuracy of the added amount.

[0006] Furthermore, the compressed air is connected to the three-way valve A through an air inlet pipe, and a three-way valve B is provided on the air inlet pipe, and the third interface of the three-way valve B is connected to the air inlet. Through the control of the three-way valve A and the three-way valve B, the metering tank is in a negative pressure feeding state, a high pressure discharging state or a normal pressure state, so as to facilitate the control of the feeding and discharging of the metering tank and realize accurate metering of the raw materials. The raw materials of the utility model are liquid raw materials with certain fluidity.

[0007] The raw materials in the utility model are different agents in seed dressing agents or seed dressing agents, including active substances, film-forming agents, other adjuvants (dispersants, penetrants, rheological additives, antifreeze agents, defoaming agents, etc.), fillers, auxiliary ingredients (micro-fertilizers, plant growth regulators, water-retaining agents, oxygen supply agents, etc.), solvents, auxiliary materials (dyes, etc.), warning colors, etc.

[0008] Furthermore, the compressed air is connected to the three-way valve A through an air intake main pipe, and a branch pipe is provided on the air intake main pipe, which is connected to the raw material tank; the branch pipe is connected to the raw material tank, the raw material tank is pressurized by compressed air, and the pipeline is pumped through a metering tank connected by a negative pressure pipe, thereby improving the discharge efficiency of the raw material tank, especially for raw materials with a certain viscosity, which can play a good promoting role, improve the transportation efficiency of the raw materials, and avoid too slow flow.

[0009] Furthermore, a three-way valve B is provided on the branch pipe, and the third interface of the three-way valve B is connected to the air inlet. By controlling the three-way valve B, the pressure of the raw material tank is relieved to ensure that it is in a normal pressure state, thereby improving the convenience of using the metering device.

[0010] Furthermore, one end of the pipeline extends to the bottom of the raw material tank to below the raw material liquid level, and this end of the pipeline is a discharge port, so that the discharge port is always located below the raw material liquid level to prevent air from entering and affecting the measurement accuracy of the liquid level meter.

[0011] Furthermore, the other end of the pipe extends to the bottom of the metering tank, and the end of the pipe is a feed port. The feed port is set at the bottom of the metering tank, so that the raw material liquid level in the metering tank rises slowly, which can prevent the raw material from splashing in the metering tank and affecting the measurement accuracy of the metering liquid level meter.

[0012] Furthermore, the negative pressure tube is connected to a vacuum tank or a hose pump via a hose.

[0013] The utility model has the following characteristics: through the mutual cooperation among compressed air, negative pressure pipe, metering tank and valve, the feeding and discharging of the metering tank are realized under the control of the controller, and the amount of raw materials is accurately measured by the metering liquid level meter, so as to realize automatic control and accurate addition of raw materials, thereby reducing labor and facilitating large-scale production; the utility model can also be used for the dilution of a single medicament; different medicaments can be added in proportion; and for the production of a single medicament, the effective ingredients, auxiliary agents and fillers are configured in proportion to make finished products, etc.

[0014] The detailed structure of the present utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 - is a schematic diagram of the structure of the utility model;

[0016] Figure 2 - is another structural schematic diagram of the utility model;

[0017] 1-raw material tank, 2-discharge port, 3-export valve, 4-feed port, 5-metering tank, 6-liquid level gauge, 7-feed valve, 8-three-way valve A, 9-negative pressure pipe, 10-compressed air, 11-air inlet, 12-three-way valve B. DETAILED DESCRIPTION

[0018] As shown in the attached drawings: a raw material metering device includes a raw material tank 1, a metering tank 5 and compressed air 10. The raw material tank 1 is connected to the metering tank 5 through a pipeline, a feed valve 7 is provided on the pipeline, a metering level meter 6 is provided on the metering tank 5, the upper end of the metering tank 5 is connected to a negative pressure pipe 9 and compressed air 10 through a three-way valve A8, and an outlet valve 3 is provided at the lower end of the metering tank 5. The feed metering and discharge of the metering tank 5 are achieved by controlling the feed valve 7, the three-way valve A8 and the outlet valve 3. Preferably, the level meter 6 can also be replaced by a flow meter to ensure the measurement accuracy of the raw materials.

[0019] In this solution, the compressed air 10, the negative pressure pipe 9, the metering tank 5 and the valve cooperate with each other, and the numerical value is transmitted to the controller through the metering liquid level meter 6. The controller controls each valve to enable the metering tank 5 to feed and control the feeding to reach the set value of the liquid level meter 6. Then, all the raw materials in the metering tank 5 are discharged from the discharge valve through the control of the compressed air 10 and the valve, and the raw materials are transported to the mixing tank or the stirring tank to ensure the accuracy of the added amount. In the utility model, the raw material is a seed treatment agent, or a diluted seed treatment agent.

[0020] In the embodiment, the compressed air 10 is connected to the three-way valve A8 through an air inlet pipe, and a three-way valve B12 is provided on the air inlet pipe, and the third interface of the three-way valve B12 is connected to the air inlet 11. Through the control of the three-way valve A8 and the three-way valve B12, the metering tank 5 is in a negative pressure feeding state, a high pressure discharging state or a normal pressure state, so as to facilitate the control of the feeding and discharging of the metering tank 5, and realize accurate metering of the raw materials. The raw materials of the utility model are liquid raw materials with certain fluidity.

[0021] In another embodiment, the compressed air 10 is connected to the three-way valve A8 through the air intake main pipe, and a branch pipe is provided on the air intake main pipe, and the branch pipe is connected to the raw material tank 1; the branch pipe is connected to the raw material tank 1, and the raw material tank 1 is pressurized by the compressed air 10, and the metering tank 5 connected by the negative pressure pipe 9 pumps the pipeline, thereby improving the discharge efficiency of the raw material tank 1, especially for raw materials with a certain viscosity, which can play a good role in promoting the transportation efficiency of the raw materials and avoid too slow flow. Preferably, a three-way valve B12 is provided on the branch pipe, and the third interface of the three-way valve B12 is connected to the air inlet 11. By controlling the three-way valve B12, the pressure relief of the raw material tank 1 is facilitated to ensure that it is in a normal pressure state, thereby improving the convenience of using the metering device.

[0022] In the embodiment, one end of the pipeline extends to the bottom of the raw material tank 1 to below the raw material liquid level, and this end of the pipeline is the discharge port 2. The discharge port 2 is always located below the raw material liquid level to prevent air from entering and affecting the measurement accuracy of the liquid level meter 6. Preferably, the other end of the pipeline extends to the bottom of the metering tank 5, and this end of the pipeline is the feed port 4. The feed port 4 is set at the bottom of the metering tank 5, so that the raw material liquid level in the metering tank 5 rises slowly, which can prevent the raw material from splashing in the metering tank 5 and affecting the measurement accuracy of the metering liquid level meter 6.

[0023] In the embodiment, the negative pressure pipe 9 is connected to the vacuum tank or the hose pump through a hose; preferably, in the present embodiment, the negative pressure pipe 9 is connected to the vacuum pump through a hose, and the hose is detachably connected for easy maintenance.

[0024] During use, the controller first closes the outlet valve 3, then opens the feed valve 7 and the three-way valve A8, and starts to pump the metering tank 5 under negative pressure to transport the raw materials into the metering tank 5. The compressed air 10 of the three-way valve B12 is controlled to slowly transport the pressure into the raw materials according to the transport speed to improve the transport efficiency of the raw materials. When the raw materials in the metering tank 5 reach the set value, the feed valve 7 is closed, the three-way valve A8 and the three-way valve B12 are closed, and then the outlet valve 3 is opened, and the three-way valve A8 is connected to the compressed air 10, and the compressed air 10 is transported into the metering tank 5 to discharge the raw materials in the metering tank 5, thereby achieving single accurate metering. The above operations are repeated during mass production to ensure continuous production and supply and improve the efficiency of seed treatment agent coating.

[0025] The utility model realizes the feeding and discharging of the metering tank 5 under the control of the controller through the mutual cooperation among the compressed air 10, the negative pressure tube 9, the metering tank 5 and the valve, and accurately measures the amount of raw materials through the metering liquid level meter 6, so as to realize automatic control and accurate addition of raw materials, thereby reducing labor and facilitating large-scale production. Multiple groups can be set to realize the addition of different medicines in proportion.

[0026] The above are preferred embodiments of the present invention and the technical principles used therein. For those skilled in the art, without departing from the spirit and scope of the present invention, any obvious changes such as equivalent transformation, simple replacement, etc. based on the technical solution of the present invention are within the protection scope of the present invention.

Claims

1. A raw material metering device, comprising a raw material tank, a metering tank and compressed air, wherein the raw material tank is connected to the metering tank through a pipeline, and a feed valve is provided on the pipeline, characterized in that: The metering tank is provided with a metering liquid level gauge, the upper end of the metering tank is connected to the negative pressure pipe and compressed air through a three-way valve A, and the lower end of the metering tank is provided with an outlet valve. The feed metering and discharge of the metering tank are realized by controlling the feed valve, the three-way valve A and the outlet valve.

2. The raw material metering device according to claim 1, characterized in that: The compressed air is connected to a three-way valve A through an air inlet pipe, a three-way valve B is provided on the air inlet pipe, and a third interface of the three-way valve B is connected to an air inlet.

3. The raw material metering device according to claim 1, characterized in that: The compressed air is connected to the three-way valve A through an air intake main pipe, and a branch pipe is provided on the air intake main pipe, and the branch pipe is connected to the raw material tank.

4. The raw material metering device according to claim 3, characterized in that: The branch pipe is provided with a three-way valve B, and the third interface of the three-way valve B is connected to the air inlet.

5. The raw material metering device according to claim 1, characterized in that: One end of the pipeline extends to the bottom of the raw material tank to below the raw material liquid surface, and this end of the pipeline is the discharge port.

6. The raw material metering device according to claim 1, characterized in that: The other end of the pipeline extends toward the bottom of the metering tank, and this end of the pipeline is the feed inlet.

7. The raw material metering device according to any one of claims 1 to 6, characterized in that: The negative pressure pipe is connected to a vacuum tank or a hose pump through a hose.

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