CN113262711A

CN113262711A - Rice blending device and rice blending method

Info

Publication number: CN113262711A
Application number: CN202110672471.7A
Authority: CN
Inventors: 王东海; 王国忠; 石红文; 金西汉; 谭长; 周杰; 苏亮
Original assignee: Zhuzhou Geman Technology Co ltd
Current assignee: Zhuzhou Geman Technology Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-08-17

Abstract

The invention discloses a rice blending device and a rice blending method, the device comprises a rack, a first-stage measuring hopper, a second-stage measuring hopper and a rice supply assembly, wherein a discharge port of the first-stage measuring hopper is provided with a discharge door, a discharge port of the second-stage measuring hopper is provided with an opening automatic control valve, and the discharge port of the first-stage measuring hopper is positioned above a feed port of the second-stage measuring hopper or extends into the second-stage measuring hopper to discharge rice into the second-stage measuring hopper. The method comprises the steps that a rice supply assembly supplies rice to a first-stage measuring hopper, the rice in the first-stage measuring hopper is discharged into a second-stage measuring hopper, the weight of the rice in the second-stage measuring hopper is measured once every fixed time period, the actual flow is calculated and compared with the preset flow, and the flow of the rice is adjusted to be close to the preset flow according to the comparison result. The invention has the advantages of simple structure, low cost, stable and reliable work, contribution to improving the rice blending precision and the mixing uniformity and the like.

Description

Rice blending device and rice blending method

Technical Field

The invention relates to the technical field of rice processing equipment, in particular to a rice blending device and a rice blending method.

Background

With the improvement of the life quality of people, the rice eaten by people at present is usually mixed rice prepared by a plurality of kinds of rice, so that the nutritive value of the edible rice is improved, and the taste of the edible rice can be improved.

At present, the rice distribution device capable of automatically adjusting the flow rate adopts a hopper with an outlet, the outlet of the hopper is provided with an opening automatic control valve capable of controlling the opening, rice is intermittently filled into the hopper during working, the weight of the rice filled into the hopper is consistent every time, and the flow rate of the rice flowing out of the hopper is controlled by adjusting the opening of the opening automatic control valve. The mode of automatically regulated flow is, set up the material level switch that detects the rice at predetermined height on the hopper, the hopper unloads out the in-process of rice when the surplus of the interior rice of hopper reaches predetermined weight, just in time correspond this predetermined height, material level switch detects and the feedback signal this moment, once pack into the rice in the hopper promptly, simultaneously according to the time of last time of packing into the rice to the hopper and the difference of the time that material level switch detected, and the weight of the rice of packing into at every turn and the difference of predetermined weight, calculate the actual flow that the rice unloaded, compare actual flow with the design flow, readjust the aperture of aperture automatic control valve, make actual flow be close to the design flow. The rice blending device and the adjusting method have the following defects:

1. the rice can be adjusted only once when the rice is loaded into the hopper, and the time required for adjusting the rice to the designed flow is long;

2. the detection precision of the material level switch is poor, and because the materials in the hopper often have factors such as an accumulation angle and material flow difference, when the material level switch is actually detected, the weight of the materials in the hopper is possibly greater than a preset weight and also can be smaller than the preset weight, so that the actual flow is inaccurate, the subsequent regulation and control of the automatic opening control valve are influenced, the problem of low control precision exists, and finally, the low meter matching precision and the poor mixing uniformity are caused.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art, provides a rice blending device which has the advantages of simple structure, low cost, stable and reliable work and contribution to improving the rice blending precision and the mixing uniformity, and also correspondingly provides a rice blending method of the rice blending device.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a join in marriage a meter device, includes frame, one-level weighing hopper, second grade weighing hopper and is used for supplying with the rice to the one-level weighing hopper and supplies a rice subassembly, the one-level weighing hopper is installed through first weighing machine in the frame, the second grade weighing hopper passes through the second weighing machine and installs in the frame, one-level weighing hopper and second grade weighing hopper all are equipped with feed inlet and discharge gate, the discharge gate of one-level weighing hopper is equipped with the discharge gate, the discharge gate of second grade weighing hopper is equipped with aperture automatic control valve, the discharge gate of one-level weighing hopper is arranged in the feed inlet top of second grade weighing hopper or stretches into in the second grade weighing hopper and is used for unloading the rice and puts in the second grade weighing hopper.

In the above rice blending device, preferably, the rice supply assembly includes a feed tank mounted on the frame, and an outlet end of the feed tank is provided with an opening-controllable regulating valve.

In the above rice blending device, preferably, the adjusting valve is an arc-shaped door with the opening controlled by a servo motor or a stepping motor.

In the above rice blending device, preferably, the opening automatic control valve is a valve whose opening is controlled by a servo motor or a stepping motor.

In the above rice blending device, preferably, the first weighing mechanism and the second weighing mechanism each include one or more weighing sensors.

As a general inventive concept, the present invention also provides a rice blending method of the above rice blending apparatus, comprising the steps of:

(S1) the rice supply component supplies rice to the first-stage measuring hopper, the first weighing mechanism is used for measuring the weight of the rice in the first-stage measuring hopper, and when the weight of the rice in the first-stage measuring hopper reaches a first preset weight, the rice supply component stops supplying the rice to the first-stage measuring hopper;

(S2) opening the discharge door of the primary weighing hopper, discharging the rice in the primary weighing hopper into the secondary weighing hopper, closing the discharge door of the primary weighing hopper after the rice in the primary weighing hopper is discharged, repeating the step (S1), and simultaneously entering the step (S3);

(S3) opening an automatic opening control valve of the secondary weighing hopper to a set opening, weighing the weight of the rice in the secondary weighing hopper once every fixed time interval by using a second weighing mechanism, calculating the actual flow of the rice discharged from the secondary weighing hopper, comparing the actual flow with a preset flow, and adjusting the opening of the automatic opening control valve to enable the flow of the rice discharged from the secondary weighing hopper to be close to the preset flow when the actual flow is deviated from the preset flow;

(S4) repeating the steps (S2) to (S3) when the weight of the rice in the secondary weighing hopper reaches a second preset weight.

In the above rice blending method, preferably, the fixed time period is less than one second.

Preferably, the rice blending method adjusts the opening of the automatic opening control valve to enable the flow of the rice discharged from the secondary metering hopper to approach the preset flow, and specifically, the adjustment is performed by adopting a PID algorithm according to the deviation between the actual flow and the preset flow.

In the rice blending method, preferably, the second preset weight is set according to the first preset weight, the capacity of the secondary weighing hopper, the preset flow rate and the time required by the primary weighing hopper to discharge the rice with the first preset weight, so that the rice is always in the secondary weighing hopper and cannot overflow from the secondary weighing hopper.

Compared with the prior art, the invention has the advantages that:

the rice distribution device can utilize the rice supply assembly to supply rice into the first-stage weighing hopper, the first weighing mechanism is used for weighing the rice supplied into the first-stage weighing hopper by the rice supply assembly each time to be preset weight, then the rice with the preset weight in the first-stage weighing hopper is discharged into the second-stage weighing hopper, and the opening degree of the valve is automatically controlled by adjusting the opening degree to adjust the flow of the rice. Because the first-stage weighing hopper and the second-stage weighing hopper both have weighing functions, when the rice blending device is used for blending rice, the real-time weight of rice in the second-stage weighing hopper can be obtained through real-time metering by the second weighing mechanism, the actual flow of the rice discharged by the second-stage weighing hopper is obtained through calculation according to the difference between the preset weight discharged by the first-stage weighing hopper and the real-time weight, the difference between the time for discharging the rice by the first-stage weighing hopper and the time for obtaining the real-time weight through metering by the second-stage weighing hopper, and the opening of the opening automatic control valve is regulated and controlled according to the deviation of the actual flow and the design flow, so that the flow of the rice discharged by the second-stage weighing hopper is close to the design flow. This kind of mode that directly adopts the mode of weighing to acquire rice weight in the second grade weighing hopper, the detection data that obtains are accurate to calculation that can be accurate obtains the actual flow of unloading the rice, and then promotes control accuracy greatly, improves and joins in marriage rice precision and mixing homogeneity. Meanwhile, the real-time weight of the rice in the secondary weighing hopper can be obtained at any time, and under the condition that the structure and the assembly of the rice distribution device are not changed, the preset weight can be set randomly and adjusted dynamically, so that the adjustment of the preset weight is convenient to ensure that the rice in the secondary weighing hopper does not cut off and overflow.

The rice blending method realizes the dynamic adjustment of the flow of discharged rice in the rice blending process, measures the weight of the rice in the secondary weighing hopper once every fixed time interval by using the second weighing mechanism, calculates the actual flow of the rice discharged from the secondary weighing hopper, and adjusts the opening of the automatic opening control valve according to the comparison result of the actual flow and the preset flow to enable the flow of the rice discharged from the secondary weighing hopper to be close to the preset flow.

Drawings

FIG. 1 is a schematic view of a rice-dispensing device.

Illustration of the drawings:

1. a frame; 2. a first-stage weighing hopper; 3. a secondary weighing hopper; 4. a rice supply assembly; 41. a feed tank; 42. adjusting the valve; 5. a discharge door; 6. an opening automatic control valve; 101. a first weighing mechanism; 102. and a second weighing mechanism.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

Example 1:

as shown in fig. 1, the rice distribution device of this embodiment, which comprises a frame 1, one-level weighing hopper 2, second grade weighing hopper 3 and the rice supply subassembly 4 that is used for supplying rice to one-level weighing hopper 2, one-level weighing hopper 2 is installed in frame 1 through first weighing mechanism 101, second grade weighing hopper 3 passes through second weighing mechanism 102 and installs in frame 1, one-level weighing hopper 2 and second grade weighing hopper 3 all are equipped with feed inlet and discharge gate, the discharge gate of one-level weighing hopper 2 is equipped with discharge gate 5, the discharge gate of second grade weighing hopper 3 is equipped with aperture automatic control valve 6, the discharge gate of one-level weighing hopper 2 is located the feed inlet top of second grade weighing hopper 3 or stretches into in the second grade weighing hopper 3 and is used for unloading the rice to put in second grade weighing hopper 3.

This join in marriage rice device, usable confession rice subassembly 4 supplies with rice in to one-level weighing hopper 2, through first weighing mechanism 101 measurement make the rice weight that supplies rice subassembly 4 to supply with in one-level weighing hopper 2 at every turn be predetermined weight, in unloading the rice of predetermined weight in one-level weighing hopper 2 to second grade weighing hopper 3 again, through the aperture of adjusting aperture automatic control valve 6, adjust out the flow of rice, its simple structure, with low costs, job stabilization is reliable. Because the first-stage weighing hopper 2 and the second-stage weighing hopper 3 both have weighing functions, when the rice is matched by adopting the rice matching device, the real-time weight of the rice in the second-stage weighing hopper 3 can be obtained by real-time measurement through the second weighing mechanism 102, the difference between the preset weight discharged by the first-stage weighing hopper 2 and the real-time weight and the difference between the time for discharging the rice from the first-stage weighing hopper 2 and the time for obtaining the real-time weight measured by the second-stage weighing hopper 3 are obtained by calculation, the actual flow rate for discharging the rice from the second-stage weighing hopper 3 is obtained, and the opening degree of the opening degree automatic control valve 6 is regulated and controlled according to the deviation of the actual flow rate and the design flow rate, so that the flow rate for discharging the rice from the second-stage weighing hopper 3 is close to the design flow rate. This kind of mode that directly adopts the mode of weighing to acquire the interior rice weight of second grade weighing hopper 3, the detection data that obtain are accurate to calculation that can be accurate obtains the actual flow of unloading the rice, and then promotes control accuracy greatly, improves and joins in marriage rice precision and mixing homogeneity. Meanwhile, the real-time weight of the rice in the second-stage metering hopper 3 can be obtained at any time, so that the preset weight can be set at will and dynamically selected and adjusted under the condition that the structure and the assembly of the rice distribution device are not changed, and the adjustment of the preset weight is convenient to ensure that the rice in the second-stage metering hopper 3 does not cut off and overflow.

In this embodiment, the rice supply assembly 4 includes the feed tank 41 installed on the frame 1, and the outlet end of the feed tank 41 is provided with the control valve 42 with controllable opening, so that automatic feeding into the first-stage weighing hopper 2 and control of the feeding speed can be realized.

In this embodiment, the regulating valve 42 is an arc-shaped door with the opening controlled by a servo motor or a stepping motor.

In this embodiment, the opening automatic control valve 6 is a valve whose opening is controlled by a servo motor or a stepping motor.

In this embodiment, the first weighing mechanism 101 and the second weighing mechanism 102 each include one or more load cells.

The regulating valve 42, the opening automatic control valve 6, the first weighing mechanism 101 and the second weighing mechanism 102 can be arranged by referring to the prior art.

Example 2:

a rice blending method of the rice blending device in the embodiment 1 comprises the following steps:

(S1) the rice supply module 4 supplies rice to the first-stage weighing hopper 2, measures the weight of the rice in the first-stage weighing hopper 2 by the first weighing mechanism 101, and stops supplying the rice to the first-stage weighing hopper 2 by the rice supply module 4 when the weight of the rice in the first-stage weighing hopper 2 reaches a first preset weight;

(S2) opening the discharge door 5 of the primary weighing hopper 2, discharging the rice in the primary weighing hopper 2 into the secondary weighing hopper 3, closing the discharge door 5 of the primary weighing hopper 2 after the rice in the primary weighing hopper 2 is discharged, repeating the step (S1), and simultaneously entering the step (S3);

(S3) opening the automatic opening control valve 6 of the secondary weighing hopper 3 to a set opening, measuring the weight of the rice in the secondary weighing hopper 3 once at intervals of a fixed time period by using the second weighing mechanism 102, calculating the actual flow of the rice discharged from the secondary weighing hopper 3, comparing the actual flow with the preset flow, and adjusting the opening of the automatic opening control valve 6 to enable the flow of the rice discharged from the secondary weighing hopper 3 to be close to the preset flow when the actual flow is deviated from the preset flow;

(S4) repeating the steps (S2) to (S3) when the weight of the rice in the secondary weighing hopper 3 reaches the second preset weight.

The rice blending method adopts the rice blending device in the embodiment 1, the flow of discharged rice is dynamically adjusted in the rice blending process, the weight of the rice in the secondary weighing hopper 3 is measured once at intervals of a fixed time period by the second weighing mechanism 102, the actual flow of the rice discharged from the secondary weighing hopper 3 is calculated, the opening of the opening automatic control valve 6 is adjusted according to the comparison result of the actual flow and the preset flow, so that the flow of the rice discharged from the secondary weighing hopper 3 is close to the preset flow, the detection data obtained by the rice blending method is accurate, the actual flow of the discharged rice can be accurately calculated, the opening of the opening automatic control valve 6 can be accurately controlled, the flow of the discharged rice is basically consistent with the preset flow, and the rice blending precision and the mixing uniformity are improved.

In this embodiment, the fixed time period is less than one second, that is, the second weighing mechanism 102 detects the weight of the rice once every fixed time period of one millisecond, and adjusts the automatic opening control valve 6 once, which is beneficial to ensuring the stable flow rate when the rice is discharged.

In this embodiment, the opening of the opening automatic control valve 6 is adjusted to make the flow rate of the rice discharged from the secondary weighing hopper 3 approach to the preset flow rate, specifically, the adjustment is performed by using a PID algorithm according to the deviation between the actual flow rate and the preset flow rate. Specifically, the acquired actual flow is compared with a preset flow to obtain an error each time, and then an incremental PID algorithm is adopted to calculate the opening of the opening automatic control valve 6 which needs to be adjusted currently.

In this embodiment, the second preset weight is set according to the first preset weight, the capacity of the second-stage weighing hopper 3, the preset flow rate and the time required by the first-stage weighing hopper 2 to discharge the rice with the first preset weight, so that the rice in the second-stage weighing hopper 3 is always kept and the rice cannot overflow from the second-stage weighing hopper 3. Therefore, the rice can be continuously, stably and accurately discharged.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. Modifications and variations that may occur to those skilled in the art without departing from the spirit and scope of the invention are to be considered as within the scope of the invention.

Claims

1. A rice blending device is characterized in that: comprises a frame (1), a first-stage measuring hopper (2), a second-stage measuring hopper (3) and a rice supply component (4) for supplying rice to the first-stage measuring hopper (2), the first-stage weighing hopper (2) is arranged on the frame (1) through a first weighing mechanism (101), the secondary weighing hopper (3) is arranged on the frame (1) through a second weighing mechanism (102), the first-stage weighing hopper (2) and the second-stage weighing hopper (3) are both provided with a feeding hole and a discharging hole, a discharge port of the first-stage weighing hopper (2) is provided with a discharge door (5), a discharge port of the second-stage weighing hopper (3) is provided with an opening automatic control valve (6), the discharge hole of the first-stage metering hopper (2) is positioned above the feed inlet of the second-stage metering hopper (3) or extends into the second-stage metering hopper (3) to discharge rice into the second-stage metering hopper (3).

2. A rice-mixing device according to claim 1, characterized in that: supply rice subassembly (4) including installing feed tank (41) on frame (1), the exit end of feed tank (41) is equipped with governing valve (42) of controllable aperture.

3. A rice-mixing device according to claim 2, characterized in that: the regulating valve (42) is an arc-shaped door with the opening controlled by a servo motor or a stepping motor.

4. A rice-mixing device according to claim 1, characterized in that: the opening automatic control valve (6) is a valve with the opening controlled by a servo motor or a stepping motor.

5. A rice-mixing device according to claim 1, characterized in that: the first weighing mechanism (101) and the second weighing mechanism (102) both comprise more than one load cell.

6. A rice-mixing method of a rice-mixing device according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:

(S1) the rice supply component (4) supplies rice to the first-stage measuring hopper (2), the first weighing mechanism (101) is used for measuring the weight of the rice in the first-stage measuring hopper (2), and when the weight of the rice in the first-stage measuring hopper (2) reaches a first preset weight, the rice supply component (4) stops supplying the rice to the first-stage measuring hopper (2);

(S2) opening a discharge door (5) of the primary weighing hopper (2), discharging the rice in the primary weighing hopper (2) into the secondary weighing hopper (3), closing the discharge door (5) of the primary weighing hopper (2) after the rice in the primary weighing hopper (2) is discharged, repeating the step (S1), and simultaneously entering the step (S3);

(S3) opening an automatic opening control valve (6) of the secondary weighing hopper (3) to a set opening, weighing the weight of the rice in the secondary weighing hopper (3) once at intervals of a fixed time period by using a second weighing mechanism (102), calculating the actual flow of the rice discharged from the secondary weighing hopper (3), comparing the actual flow with a preset flow, and adjusting the opening of the automatic opening control valve (6) to enable the flow of the rice discharged from the secondary weighing hopper (3) to be close to the preset flow when the actual flow is deviated from the preset flow;

(S4) repeating the steps (S2) to (S3) when the weight of the rice in the secondary weighing hopper (3) reaches a second preset weight.

7. The rice proportioning method of claim 6, wherein: the fixed time period is less than one second.

8. The rice proportioning method of claim 6, wherein: and adjusting the opening of the automatic opening control valve (6) to enable the flow of the rice discharged from the secondary metering hopper (3) to approach the preset flow, and specifically adjusting the flow by adopting a PID algorithm according to the deviation of the actual flow and the preset flow.

9. The rice proportioning method of claim 6, wherein: the second preset weight is set according to the first preset weight, the capacity of the second-stage measuring hopper (3), the preset flow and the time required by the first-stage measuring hopper (2) to discharge the rice with the first preset weight, and the fact that the rice always exists in the second-stage measuring hopper (3) and the rice cannot overflow from the second-stage measuring hopper (3) is guaranteed.