Liquid material control system and its discharging control method

Abstract

The application provides a liquid material control system and a discharging control method thereof, which comprises a stirring mechanism, a weighing device, a foreign matter separator, a material pump, a pipeline circuit, valves and a gas supply source, the stirring mechanism is used for stirring the feed to ensure the generation of uniform liquid material, the weighing device is arranged below the stirring tank and is used for collecting the weight data of the discharged material, the pipeline circuit is connected with the stirring mechanism and is used for conveying the liquid material, the foreign matter separator and the material pump are both arranged on the pipeline circuit, the foreign matter separator is used for separating the foreign matter in the liquid material, the material pump is used for providing power for conveying the liquid material in the pipeline circuit, the valves are distributed on the pipeline circuit and are used for controlling the flow direction of the liquid material in the pipeline circuit, and the gas supply source is connected with the pipeline circuit and is used for providing power for the valves. The application can effectively prevent the occurrence of water hammer effect and accurately and uniformly discharge the material, so as to achieve the purpose of precise and scientific breeding.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of poultry and livestock breeding equipment, in particular to a liquid feed control system and a discharging control method thereof. BACKGROUND

[0002] The liquid feed feeding system is widely used in large-scale pig farms. When transporting over a long distance, preparing a large capacity of feed and discharging from multiple discharge ports, if corresponding solutions and measures are not adopted for transportation and feeding, water hammer effect of the liquid pipeline and uneven discharging between the discharge ports will occur, so that scientific breeding cannot be carried out, and finally the pigs cannot be optimally and scientifically fed, which affects the growth of the pigs. SUMMARY

[0003] The present application provides a liquid feed control system and a discharging control method thereof, which can effectively prevent the occurrence of water hammer effect and accurately and uniformly discharge, so as to achieve the purpose of precise and scientific breeding.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] A liquid feed control system comprises a stirring mechanism, a weighing device, a foreign matter separator, a feed pump, a pipeline circuit, valves and a gas source. The stirring mechanism is used for stirring the feed to ensure the generation of uniform liquid feed. The weighing device is arranged below the stirring tank and is used for collecting the weight data of the discharged feed. The pipeline circuit is connected with the stirring mechanism and is used for transporting the liquid feed. The foreign matter separator and the feed pump are arranged on the pipeline circuit. The foreign matter separator is used for separating foreign matters in the liquid feed. The feed pump is used for providing power for the pipeline circuit to transport the liquid feed. The valves are arranged on the pipeline circuit and are used for controlling the flow direction of the liquid feed in the pipeline circuit. The gas source is connected with the pipeline circuit and is used for providing power for the valves.

[0006] Preferably, the stirring mechanism comprises a stirring tank, a stirring rod and a stirring motor. The stirring rod is arranged in the stirring tank, and the stirring motor is arranged at one end of the stirring rod.

[0007] Preferably, the pipeline circuit comprises a first circuit and a second circuit which are connected with each other.

[0008] Preferably, the valves comprise a plurality of control valves and a plurality of discharging valves. The control valves and the discharging valves are arranged on the first circuit and the second circuit respectively.

[0009] Preferably, the discharging valve comprises a valve body and a throttling plate. The throttling plate is arranged at a discharging opening of the valve body, and at least one discharging hole is arranged on the throttling plate.

[0010] Also disclosed is a liquid material control system and a method for controlling the discharging of the liquid material control system, the method comprising the following steps:

[0011] A. First, open the control valve and start the material pump to deliver the liquid material to the end of the pipeline circuit, then close the control valve at the end;

[0012] B. Determine when to close the control valve at the end of the pipeline circuit by the data fed back by the weighing device at the bottom of the stirring mechanism to determine the amount of reduction of the stirring mechanism;

[0013] C. After the liquid material is filled, start discharging, first open the frontmost discharging valve, then start the material pump, and when the weighing device detects that the specific percentage of the discharging amount has been reached, slowly reduce the speed of the material pump to a specific number of revolutions and maintain it until the weighing device detects that the specific percentage of the discharging amount has been reached;

[0014] D. Then open the middle discharging valve, wait for a set time interval to close the frontmost discharging valve, accelerate the speed of the material pump to a set value, and when the weighing device detects that the specific percentage of the discharging amount has been reached, slowly reduce the speed of the material pump to a specific number of revolutions and maintain it until the weighing device detects that the specific percentage of the discharging amount has been reached;

[0015] E. Open the last discharging valve, wait for a set time interval to close the middle discharging valve, and when the weighing device detects that the specific percentage of the discharging amount has been reached, slowly reduce the speed of the material pump to a specific number of revolutions and maintain it until the weighing device detects that the specific percentage of the discharging amount has been reached;

[0016] F. Open the frontmost discharging valve, wait for a set time interval to close the last discharging valve, rotate the material pump at a slower speed, and when the weighing device detects that the discharging amount has been reached, open the middle discharging valve and close the frontmost discharging valve, rotate the material pump at a slower speed, and when the weighing device detects that the discharging amount has been reached, open the last discharging valve and close the middle discharging valve, rotate the material pump at a slower speed, and when the weighing device detects that the discharging amount has been reached, close the material pump and the last discharging valve, and the discharging of the pipeline circuit is completed.

[0017] Compared with the prior art, the present application has the beneficial effect of reducing the water hammer effect and uneven discharging during feeding in a breeding farm, achieving precise and uniform discharging, and achieving the purpose of precise and scientific breeding. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The figure is a structural diagram of the liquid material control system of the present application;

[0019] Figure 2 Fig. 1 is a schematic view of a blanking valve structure according to the present application. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0021] It should be noted that when a component / part is referred to as "disposed on" another component / part, it can be directly disposed on the other component / part or there can be a middle component / part. When a component / part is referred to as "connected / coupled" to another component / part, it can be directly connected / coupled to the other component / part or there can be a middle component / part. The term "connected / coupled" as used herein can include electrical and / or mechanical physical connection / coupling. The term "comprising / including" as used herein refers to the existence of the features, steps or components / parts, but does not exclude the existence or addition of one or more other features, steps or components / parts. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing specific embodiments only and is not intended to be limiting of the application.

[0023] In addition, in the description of the present application, the terms "first", "second", and the like are used only for the purpose of description and distinguishing similar objects, and there is no precedence or significance between them. In addition, in the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0024] Please refer to Figure 1 and Figure 2 As shown in FIG. 1, a liquid feed control system includes a stirring mechanism 1, a weighing device 2, a foreign matter separator 4, a feed pump 5, a pipeline circuit 6, a valve 3, and a gas supply source 7. The stirring mechanism 1 is used to stir the feed to ensure the generation of uniform liquid feed. The weighing device is arranged below the stirring tank and is used to collect the weight data of the discharged feed. The pipeline circuit 6 is connected to the stirring mechanism 1 and is used to transport the liquid feed. The foreign matter separator 4 and the feed pump 5 are both arranged on the pipeline circuit 6. The foreign matter separator 4 is used to separate foreign matter in the liquid feed. The feed pump 5 is used to provide power for the pipeline circuit 6 to transport the liquid feed. The valve 3 is distributed on the pipeline circuit 6 and is used to control the flow direction of the liquid feed in the pipeline circuit 6. The gas supply source 7 is connected to the pipeline circuit 6 and is used to provide power for the valve 3.

[0025] The stirring mechanism 1 comprises a stirring tank 11, a stirring rod 12 arranged in the stirring tank 11, and a stirring motor 13 arranged at one end of the stirring rod 12. The pipeline circuit 6 comprises a first circuit 61 and a second circuit 62 in communication with each other. The valve 3 comprises a plurality of control valves 31 and a plurality of discharge valves 32, and the control valves 31 and the discharge valves 32 are arranged on the first circuit 61 and the second circuit 62 respectively.

[0026] The discharge valve 32 comprises a valve body 321 and a throttling plate 322 arranged at a discharge opening of the valve body 321, and the throttling plate 322 is provided with at least one discharge hole. The shape of the discharge hole is not limited, but it has a throttling function, and the size of the discharge hole can be changed according to actual production needs. In the liquid feed feeding of pig farms, the power of the frequency conversion feed pump 5 is large, the conveying distance is indefinite, and the response speed of the liquid feed control system is slower than the flow of the feed pump 5. Therefore, the throttling plate 322 is specially designed for the discharge opening of the discharge valve 32, and the design of the reduced cross-sectional flow area can prolong the discharge time. For the use scene of the small trough, the system has sufficient response time, thereby improving the precision and robustness of the system discharge.

[0027] Also disclosed is a discharge control method of a liquid feed control system, based on the liquid feed control system, the discharge control method comprising the following steps:

[0028] A. First, open the control valve 31, start the feed pump 5 to convey the liquid feed along the main road of the pipeline circuit 6 to the control valve 31 at the end, and then close the control valve 31 at the end;

[0029] B. The amount of reduction of the stirring mechanism 1 is obtained through the data fed back by the weighing device 2 at the bottom of the stirring mechanism 1, so as to determine when to close the control valve 31 at the end of the pipeline circuit 6;

[0030] C. After the liquid feed is filled, the discharge is started, the frontmost discharge valve 32 is opened first, then the feed pump 5 is started, the weighing device 2 monitors the specific percentage of the discharge to the discharge valve 32, and then the speed of the feed pump 5 is slowly reduced to a specific number of revolutions and maintained until the weighing device 2 monitors another specific percentage of the discharge to the discharge amount;

[0031] D. Then, the middle discharge valve 32 is opened, the frontmost discharge valve 32 is closed after a set time interval, the speed of the feed pump 5 is accelerated to a set value, the weighing device 2 monitors the specific percentage of the discharge to the middle discharge valve 32, and then the speed of the feed pump 5 is slowly reduced to a specific number of revolutions and maintained until the weighing device 2 monitors another specific percentage of the discharge to the discharge amount;

[0032] E. open the last end of the discharge valve 32, wait for a set time interval to close the middle discharge valve 32, the weighing device 2 monitors a certain percentage of the discharge to the last end of the discharge valve 32, then slowly reduce the speed of the material pump 5 to a certain number of revolutions and maintain until the weighing device 2 monitors another certain percentage of the discharge;

[0033] F. open the last end of the discharge valve 32, wait for a set time interval to close the middle discharge valve 32, the weighing device 2 monitors a certain percentage of the discharge to the last end of the discharge valve 32, then slowly reduce the speed of the material pump 5 to a certain number of revolutions and maintain until the weighing device 2 monitors another certain percentage of the discharge;

[0034] The present application can reduce the water hammer effect and the uneven discharge during the feeding in the farm by the liquid material control system and the discharge control method, so as to achieve the accurate and uniform discharge and the precise and scientific breeding.

[0035] Please refer to Figure 1 (not shown below, to avoid confusion) Figure 1The first loop comprises a first loop and a second loop (the frontmost end feeding valve (2) (6), the middle feeding valve (3) (7), the last end feeding valve (4) (8), and the control valve (1) (5) (11) (12) (13) (14) (15) (16)), but in order to better understand the feeding control method of the present application, the first loop is taken as an example below, and the specific method is as follows: the control method for preventing water hammer effect is as follows: the first loop is taken as an example for feeding. Since the liquid material control system fills the first loop with the stirred liquid material before starting feeding, the control valves (16), (14), (11), (1), (15) are first opened. The material pump is started, and the liquid material is transported along the main road of the first loop to the control valve (1), and then the control valve (1) is closed. The amount of liquid material in this filling section has been measured in advance and calculated and written into the liquid material control system. The data fed back by the weighing device at the bottom of the stirring mechanism determines when to close the control valve (1) at the end of the first loop, and the feeding is started after the filling is completed. The feeding process can be carried out on the next feeding port after the corresponding liquid material amount is fed in sequence. It should be noted that the start and stop of the valve and the acceleration and deceleration of the motor need to be specially matched, otherwise the system is prone to large water hammer effect. A matching method is given as follows: open the feeding valve (2) → slowly start the material pump → the weighing device monitors that the feeding reaches a certain percentage of the feeding valve (2) → slowly reduce the material pump speed to a certain number of revolutions and maintain until the weighing device monitors that the feeding reaches another certain percentage of the feeding amount → open the feeding valve (3) → wait for a certain time interval → close the feeding valve (2) → accelerate the material pump speed to a set value → the weighing device monitors that the feeding reaches a certain percentage of the feeding valve (3) → slowly reduce the material pump speed to a certain number of revolutions and maintain until the weighing device monitors that the feeding reaches another certain percentage of the feeding amount → open the feeding valve (4) → wait for a certain time interval → close the feeding valve (3) → the weighing device monitors that the feeding reaches a certain percentage of the feeding valve (4) → slowly reduce the material pump speed to a certain number of revolutions and maintain until the weighing device monitors that the feeding reaches the feeding amount → close the feeding valve (4) → close the material pump. It should be noted that the method of "opening the next feeding → waiting for a certain time interval → closing the feeding port" is the key to preventing water hammer effect, and the specific time interval needs to be given a corresponding value according to the on-site debugging.

[0036] The method for uniform discharging is as follows: when discharging, first, the first loop is discharged according to a specific percentage (e.g. 95%) of the required amount, and then the remaining percentage (e.g. 5%) is discharged again. Assuming that the liquid material has been stirred in the stirring mechanism, the control valves (16), (14), (11), (1), (15) are first opened. The pump is started, and the liquid material is transported along the first loop to the end control valve (1), which is then closed. The amount of liquid material in the filling section has been measured and calculated in advance and written into the system. The system determines when to close the control valve (1) at the end of the first loop according to the amount of liquid material in the stirring mechanism, which is fed back by the weighing device at the bottom of the stirring tank. After the filling is completed, the discharging begins. One discharging method is as follows: open the discharging valve (2) → start the pump → the weighing device monitors that the discharging amount of the discharging valve (2) reaches a specific percentage of the required discharging amount → the pump is slowed down → the discharging valve (2) is closed → the discharging valve (3) is opened → the pump is accelerated to the set value → the weighing device monitors that the discharging amount of the discharging valve (3) reaches a specific percentage of the required discharging amount → the pump is slowed down → the discharging valve (3) is closed → the discharging valve (4) is opened → the weighing device monitors that the discharging amount of the discharging valve (4) reaches a specific percentage of the required discharging amount → the pump is slowed down → the discharging valve (4) is closed → the discharging valve (2) is opened → the pump is rotated at a slow speed → the weighing device monitors that the discharging amount of the discharging valve (2) reaches the required total discharging amount → the discharging valve (2) is closed → the discharging valve (3) is opened → the pump is rotated at a slow speed → the weighing device monitors that the discharging amount of the discharging valve (3) reaches the required total discharging amount → the discharging valve (3) is closed → the discharging valve (4) is opened → the pump is rotated at a slow speed → the weighing device monitors that the discharging amount of the discharging valve (4) reaches the required total discharging amount → the pump is closed → the discharging valve (4) is closed → the discharging of the first loop is completed. It should be noted that, at a specific time in the last stage of the above discharging, in order to ensure that there is no residual liquid material in the pipe, the following step is inserted: adding clean water to the stirring mechanism, and pushing the residual liquid material out by the clean water. Without considering other factors, the natural discharging error amount is normally distributed, and the method of discharging multiple times can ensure that each discharging port has a relatively uniform error distribution between each discharging, thereby achieving uniform discharging.

[0037] The above merely illustrates the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes to the technical solutions and the inventive concept of the present application within the technical scope disclosed by the present application, which should be covered by the protection scope of the present application.

Claims

1. A material discharge control method of a liquid material control system, characterized by, The control system comprises a stirring mechanism, a weighing device, a foreign matter separator, a material pump, a pipeline circuit, valves and a gas supply source. The stirring mechanism is used to stir the feed to ensure the generation of uniform liquid material, the weighing device is arranged below the stirring tank and is used to collect the weight data of the discharged material, and the pipeline circuit is connected with the stirring mechanism and is used to transport the liquid material. The foreign matter separator and the material pump are arranged on the pipeline circuit, the foreign matter separator is used to separate foreign matters in the liquid material, and the material pump is used to provide power for the pipeline circuit to transport the liquid material. The valves are arranged on the pipeline circuit and are used to control the flow direction of the liquid material in the pipeline circuit, the gas supply source is connected with the pipeline circuit and is used to provide power for the valves, and the valves comprise a plurality of control valves and a plurality of discharge valves. The discharge control method based on the control system comprises the following steps: A. First, open the control valve, start the material pump to transport the liquid material along the main pipeline of the pipeline circuit to the control valve at the end, and then close the control valve at the end; B. The stirring mechanism reduces the amount of data obtained by the weighing device at the bottom of the stirring mechanism, so as to determine when to close the control valve at the end of the pipeline circuit; C. After the liquid material is filled, start discharging, open the frontmost discharge valve first, then start the material pump, and slowly reduce the material pump speed to a specific number of revolutions when the weighing device monitors that the discharge reaches a specific percentage of the discharge amount, and then maintain until the weighing device monitors that the discharge reaches another specific percentage of the discharge amount; D. Then open the middle discharge valve, wait for a set time interval to close the frontmost discharge valve, accelerate the material pump speed to a set value, and slowly reduce the material pump speed to a specific number of revolutions when the weighing device monitors that the discharge reaches a specific percentage of the discharge amount, and then maintain until the weighing device monitors that the discharge reaches another specific percentage of the discharge amount; E. Open the last discharge valve, wait for a set time interval to close the middle discharge valve, and slowly reduce the material pump speed to a specific number of revolutions when the weighing device monitors that the discharge reaches a specific percentage of the discharge amount, and then maintain until the weighing device monitors that the discharge reaches another specific percentage; F. Open the frontmost discharge valve, wait for a set time interval to close the last discharge valve, rotate the material pump at a slower speed, and then open the middle discharge valve and close the frontmost discharge valve, rotate the material pump at a slower speed, and then open the last discharge valve and close the middle discharge valve, rotate the material pump at a slower speed, and then close the material pump and the last discharge valve after the weighing device monitors that the discharge reaches the discharge amount of the last discharge valve, so as to complete the discharge of the pipeline circuit.

2. The material discharge control method of the liquid material control system according to claim 1, wherein The stirring mechanism comprises a stirring tank, a stirring rod and a stirring motor, the stirring rod is arranged in the stirring tank, and the stirring motor is arranged at one end of the stirring rod.

3. The material discharge control method of the liquid material control system according to claim 1, wherein The discharge valve comprises a valve body and a throttle plate, the throttle plate is arranged at a discharge opening of the valve body, and at least one discharge hole is arranged on the throttle plate.

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