Feeding and weighing device for production of polystyrene white balls

Abstract

The utility model relates to a feeding and weighing device for production of polystyrene white balls, which effectively solves the problem of larger error caused by feeding impact of a weighing device. According to the technical scheme, the device comprises a charging barrel and a bearing plate, the charging barrel is supported on the bearing plate, a weighing device is arranged between the charging barrel and the bearing plate and can weigh the total weight of the charging barrel and materials in the charging barrel, the lower end of the charging barrel is connected with a discharging pipe, a first auger is arranged in the discharging pipe, a feeding pipe and a returning pipe are arranged above the charging barrel, the feeding pipe is connected with a stock bin, and the returning pipe is connected with a discharging pipe. A second auger is arranged in the feed pipe, the lower end of the return pipe extends into the bottom of the charging barrel, and a third auger is arranged in the return pipe; the device further comprises a controller, and the controller receives weight signals of the weighing device and controls starting and stopping of the augers according to the weight signals. According to the utility model, a mode of redundant feeding and returning to a preset value is adopted, so that weighing errors caused by feeding impact are avoided, and materials with target weight can be weighed more accurately.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of weighing equipment, concretely is a kind of polystyrene white ball production is used to feed and weigh device. BACKGROUND

[0002] In the production process of polystyrene white ball, the required solid raw materials need to be weighed in proportion and then fed into the reaction kettle;The current feed and weigh device generally uses an electronic scale to weigh, and uses the value of the scale as a control signal to control the feeding action, to realize automatic feeding action;For example, the utility model patent with application number CN202122159496.5 discloses a kind of weighing and feeding device, the weight of material in hopper is weighed by weighing sensor during feeding process, when reaching preset value, stop feeding, and open unloading valve, feeding can be completed;The device of this kind of weighing mode has a disadvantage: when feeding into the weighing container, the impact force of the material can cause the reading of the scale to have large fluctuations, when the reading of the scale fluctuates to the preset value, there is a deviation between the actual weight of the material in the weighing container and the preset value, which leads to a large error in the amount of feeding. SUMMARY

[0003] In order to solve the problem of large error caused by feeding impact of the scale, the utility model provides a kind of polystyrene white ball production is used to feed and weigh device.

[0004] The technical solution solved by it includes a barrel and a bearing plate, the barrel is supported on the bearing plate, and a scale is provided between the barrel and the bearing plate, the scale can weigh the total weight of the barrel and the material in the barrel, the lower end of the barrel is connected with a discharge pipe, the discharge pipe is provided with a first auger, the upper part of the barrel is provided with a feeding pipe and a return pipe, the feeding pipe is connected with a hopper, the feeding pipe is provided with a second auger, the lower end of the return pipe extends into the bottom of the barrel, and the return pipe is provided with a third auger;It also includes a controller, which receives the weight signal of the scale and controls the start and stop of each auger according to the weight signal.

[0005] The bearing plate is annular, the barrel passes through the ring hole of the bearing plate, the outer wall of the barrel is fixed with an annular convex edge, the convex edge is pressed on the upper surface of the bearing plate, and the scale is arranged between the convex edge and the bearing plate.

[0006] The scale is divided into several circumferentially distributed parts, and the sum of the weighing values of all scales is taken as the weight signal.

[0007] The upper end of the return pipe is provided with a temporary storage room for temporarily storing the material.

[0008] The utility model adopts the mode of redundant feeding and returning to preset value, avoids the weighing error caused by feeding impact, and can more accurately weigh the target weight of the material. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the front view of the utility model.

[0010] Figure 2 It is the top view of the barrel and the bearing plate. PREFERRED EMBODIMENT

[0011] The utility model discloses a barrel 1 and bearing plate 2, and the barrel 1 is supported on the bearing plate 2, and the barrel 1 and bearing plate 2 are equipped with the weigher 3 between them, the weigher 3 can weigh the total weight of the barrel 1 and the material in the barrel, the lower end of the barrel 1 is connected with the discharge pipe 4, the discharge pipe 4 is equipped with the first auger 5, the upper portion of the barrel 1 is equipped with the feeding pipe 6 and the return pipe 7, the feeding pipe 6 is connected with the stock bin 8, and the feeding pipe 6 is equipped with the second auger 9, the lower end of the return pipe 7 extends into the bottom of the barrel 1, and the return pipe 7 is equipped with the third auger 10;The feeding pipe 6 and the return pipe 7 do not directly contact the barrel 1, that is to say, the feeding pipe 6, the return pipe 7 and the material in the pipe cannot be measured by the weigher 3;Still include the controller 11, the controller 11 receives the weight signal of the weigher 3, and according to the weight signal control each auger's start-stop, and the controller 11 adopts PLC.

[0012] The bearing plate 2 is annular, the barrel 1 passes through the ring hole of the bearing plate 2, the outer wall of the barrel 1 is fixed with annular convex edge 12, the convex edge 12 is pressed on the upper surface of the bearing plate 2, and the weigher 3 is arranged between the convex edge 12 and the bearing plate 2;Such design can stably bear the barrel 1, and the discharge and receiving of the bottom of the barrel 1 are not affected.

[0013] The weigher 3 is divided into several circumferential uniform distributions, and the sum of the weighing values of all the weighers 3 is used as the weight signal;The multi-point distributed weigher 3 can make the weighing result more sensitive and accurate, and reduce the measurement error of the single weigher 3 caused by the uneven distribution of the material in the barrel 1.

[0014] The upper end of the return pipe 7 is provided with a temporary storage room 13 for temporarily storing materials.

[0015] The utility model inputs the target weight in the controller 11 before weighing, and then the controller 11 starts to control the work of each auger, first starts the third auger 10, ensures that the material in the temporary storage room 13 and the return pipe 7 is discharged into the barrel 1, then the third auger 10 stops, starts the second auger 9, and the feeding pipe 6 starts to feed into the barrel 1, and the weight signal of the weigher 3 fluctuates and rises, when the weight signal reaches 105% of the set target weight, the second auger 9 stops, reversely starts the third auger 10, starts to feed from the barrel 1 to the return pipe 7 and the temporary storage room 13, then the weight signal starts to gradually decrease, until the third auger 10 stops after the target weight is decreased, the first auger 5 is started, and the material in the barrel 1 is completely discharged from the discharge pipe 4.

[0016] Repeat the above process at the next weighing.

[0017] The utility model discloses adopt the mode of first setting 5% redundancy, then utilize the return pipe 7 to the redundancy of this discharge to reach the target weight of setting, because the return pipe 7 is in the extraction redundancy, and the material cylinder 1 is not in the impact of feeding, therefore the fluctuation of weight signal is far less than the fluctuation of feeding pipe 6 feeding, and therefore can be more accurate to weigh the target weight of material.

Claims

1. A feeding and weighing device for polystyrene white ball production, comprising a material cylinder (1) and a bearing plate (2), the material cylinder (1) is supported on the bearing plate (2), and a weighing device (3) is arranged between the material cylinder (1) and the bearing plate (2), the weighing device (3) can weigh the total weight of the material cylinder (1) and the material in the cylinder, characterized in that, The lower end of the material cylinder (1) is connected with a discharging pipe (4), the discharging pipe (4) is provided with a first auger (5), the upper end of the material cylinder (1) is provided with a feeding pipe (6) and a material returning pipe (7), the feeding pipe (6) is connected with a material bin (8), the feeding pipe (6) is provided with a second auger (9), the lower end of the material returning pipe (7) is inserted into the bottom of the material cylinder (1), and the material returning pipe (7) is provided with a third auger (10); the device further comprises a controller (11), the controller (11) receives a weight signal of the weight sensor (3) and controls the start and stop of the augers according to the weight signal.

2. The polystyrene white ball production feeding and weighing device according to claim 1, characterized in that, The bearing plate (2) is annular, the material cylinder (1) passes through the ring hole of the bearing plate (2), the outer wall of the material cylinder (1) is fixed with an annular convex edge (12), the convex edge (12) is pressed on the upper surface of the bearing plate (2), and the weight sensor (3) is arranged between the convex edge (12) and the bearing plate (2).

3. The polystyrene white ball production feeding and weighing device according to claim 1 or 2, characterized in that, The weight sensor (3) is distributed in the circumference and is divided into a plurality of parts, and the sum of the weight values of all the weight sensors (3) is taken as the weight signal.

4. The polystyrene white ball production feeding and weighing device according to claim 1, characterized in that, The upper end of the material returning pipe (7) is provided with a temporary storage chamber (13) for temporarily storing materials.

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