A precise weighing device for agricultural granular materials

Abstract

The present application relates to the field of packaging equipment, and in particular to a precise weighing device for agricultural granular materials. The key points of its technical solution are: comprising a frame, a bin and a weighing device, wherein the bin and the weighing device are respectively arranged on the frame, the bottom of the bin has a through hole, the bin is located above the weighing device, and further comprising a coarse material separation component, which is arranged at the bottom of the bin and is connected to the discharge port, and is used to control the quantitative material to achieve discharge; and a fine material separation component, which is connected to the bin and adjacent to the coarse material separation component, and is used to supplement the difference weight. The present application has the effect of achieving precise weighing of agricultural granular materials.

Description

Technical Field

[0001] The present application relates to the field of packaging equipment, and in particular to a precise weighing device for agricultural granular materials. Background Art

[0002] The storage and transportation of agricultural products play a vital role in ensuring food security. With the development of technology, most granular agricultural products, such as rice and beans, are currently packaged in a vacuum-sealed manner, and vacuum-sealed technology has been widely promoted and applied.

[0003] At present, the packaging process of agricultural granular materials mainly involves steps such as weighing, heat sealing and vacuuming. Among them, weighing is an important link in the product packaging process, which is directly related to whether the product production quality is qualified. When weighing, a corresponding weighing system is usually used. For example, the Chinese utility model patent with announcement number CN207335836U discloses a rice weighing system, which accurately weighs the rice in the rice storage bin by calculating the volume and density of rice.

[0004] However, in actual applications, the weighing amount usually needs to be controlled within a certain error range. If the weighing capacity is insufficient, the packaging quality will not meet the standards. If the weighing capacity is too large, it will affect the overall production cost of the product. The current error accuracy in the rice weighing process still cannot meet production needs, and there is still much room for improvement. Utility Model Content

[0005] In order to achieve accurate weighing of agricultural granular materials, the present application provides an accurate weighing device for agricultural granular materials.

[0006] The present application provides an agricultural granular material accurate weighing device adopts the following technical solution:

[0007] A precise weighing device for agricultural granular materials comprises a frame, a bin body and a weighing device, wherein the bin body and the weighing device are respectively arranged on the frame, the bottom of the bin body has a through hole, the bin body is located above the weighing device, and further comprises a coarse material distribution component, which is arranged at the bottom of the bin body and is connected to the through hole and is used to control the discharge of quantitative materials; and a fine material distribution component, which is connected to the bin body and adjacent to the coarse material distribution component and is used to supplement the difference in weight.

[0008] By adopting the above technical solution, during the packaging process, the bagging weight is monitored by a weighing device, and the material is first filled into the packaging bag through the coarse material distribution component to make the weight close to the predetermined bagging weight, and then the fine material distribution component supplements the remaining error-free weight. Compared with the one-time bagging action, the bagging weight can be better controlled, the weight error can be reduced, and the bagging accuracy is significantly improved.

[0009] Preferably, the coarse material distribution component includes a coarse material distribution container, which is fixedly arranged on the warehouse body, and the coarse material distribution container has a feed port and a discharge port, and the feed port is connected to the through hole; and a first valve component, which is divided into two groups and is respectively arranged on the coarse material distribution container for alternately opening and closing the feed port and the discharge port.

[0010] By adopting the above technical solution, the coarse material distribution container has a quantitative effect. When the first valve component located at the feed port is opened and when the first valve component at the discharge port is closed, the material can enter the coarse material distribution container. When material distribution is required, the two first valve components are started at the same time to close the feed port and open the discharge port, and the material enters the package in a quantitative manner, thereby realizing a rough action that is quick and convenient.

[0011] Preferably, the first valve assembly includes an opening and closing cylinder fixedly arranged on the coarse material distribution container; and a valve plate fixedly arranged on a telescopic rod of the opening and closing cylinder, and the valve plate is slidably arranged on the coarse material distribution container for opening and closing the feed port or the discharge port.

[0012] By adopting the above technical solution, the opening and closing cylinder drives the valve to open and close the feed port or the discharge port by outputting reciprocating motion, and the action is quick and efficient.

[0013] Preferably, the fine particle component comprises a fine particle container fixedly disposed on the bin body, the fine particle container having a particle distribution channel connected to the through hole; and a second valve component disposed on the fine particle container for opening and closing the particle distribution channel.

[0014] By adopting the above technical solution, under the control of the second valve assembly, the material is directly discharged from the material distribution channel, the action is quick, it is conducive to quickly shortening the error, and the bagging efficiency is excellent.

[0015] Preferably, the diameter of the distribution channel is 5-10 cm.

[0016] By adopting the above technical solution, the diameter of the material distribution channel is controlled within 5-10 cm, which is conducive to discharging a small amount of material, is convenient for controlling errors, and has good bagging accuracy.

[0017] Preferably, the second valve assembly includes a valve shaft rotatably disposed on the fine material container, the valve shaft having a discharge channel; and a servo motor, the output shaft of the servo motor being connected to the valve shaft, for driving the valve shaft to rotate so as to control the active connection between the discharge channel and the material distribution channel.

[0018] By adopting the above technical solution, the servo motor can output a stable rotation angle, and thus can accurately control the rotation of the valve shaft. Under the rotation of the valve shaft, the discharge channel and the distribution channel are movably connected to control the precise discharge of the material. The structure is precise and easy to control.

[0019] Preferably, it further comprises two groups of clamping assemblies, which are arranged on the frame and are used to clamp the two sides of the bag body respectively.

[0020] By adopting the above technical solution, during the bagging process, the bag body may be offset due to the weight of the material. At this time, under the action of the clamping component, the bag body can be stabilized and the bagging action can be carried out stably.

[0021] Preferably, the clamping assembly comprises a displacement cylinder fixedly arranged on the frame, and a telescopic rod arranged horizontally; and a clamping cylinder fixedly arranged on the telescopic rod of the displacement cylinder, for clamping the bag body.

[0022] By adopting the above technical solution, the displacement cylinder can drive the clamping cylinder to be closer to or closer to the bag body, and the bag body is clamped under the action of the clamping cylinder. The action is quick and efficient, and the clamping is firm and not easy to loosen.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. During the packaging process, the coarse material distribution component first fills the material into the packaging bag to make the weight close to the predetermined bagging weight, and then the fine material distribution component supplements the remaining error-free weight. Compared with the one-time bagging action, the bagging weight can be better controlled, the error tolerance rate is higher, the weight error can be effectively reduced, and the bagging accuracy is significantly improved;

[0025] 2. The second valve adopts direct discharge mode, which is conducive to the rapid filling of the material error. At the same time, under the control of a small amount of discharge from the material distribution channel, accurate supplementation can be achieved while quickly filling;

[0026] 3. The clamping assembly helps to improve the stability of the material during bagging, making the bagging action more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a weighing device in a preferred embodiment of the present application.

[0028] Figure 2 It is a cross-sectional view of a fine material component and a coarse material component in a preferred embodiment of the present application.

[0029] Figure 3 It is a structural schematic diagram of a clamping assembly in a preferred embodiment of the present application.

[0030] Explanation of the reference numerals in the accompanying drawings: 1. frame; 2. bin body; 21. through hole; 3. weighing device; 4. coarse material distribution assembly; 41. coarse material distribution container; 411. feed port; 412. discharge port; 42. first valve assembly; 421. opening and closing cylinder; 422. valve plate; 5. fine material distribution assembly; 51. fine material distribution container; 511. distribution channel; 52. second valve assembly; 521. valve shaft; 5211. discharge channel; 522. servo motor; 6. clamping assembly; 61. displacement cylinder; 62. clamping cylinder. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-Figure 3 This application is described in further detail.

[0032] The embodiment of the present application discloses a device for accurately weighing agricultural granular materials.

[0033] Reference Figure 1 The weighing device includes a frame 1, a bin body 2 and a weighing device 3. The bin body 2 is fixedly installed on the frame 1. The bin body 2 is a funnel-shaped structure for feeding and temporarily storing materials. A through hole 21 is penetrated at the bottom of the bin body 2. The material flows out to the outside through the through hole 21 to further fall into the packaging bag. The weighing device 3 is also fixedly installed on the frame 1. The packaging bag is placed on the weighing device 3 for weighing, and the bin body 2 is located above the weighing device 3 at this time.

[0034] Specifically, in this embodiment, the weighing device 3 adopts an electronic scale, especially an electronic scale product with switch output and connectable to a PLC controller, which is conducive to the subsequent automatic control of the weighing action. The working principle of the electronic scale is the existing technology, and its structure is not described in detail.

[0035] Reference Figure 1 and Figure 2 In order to reduce the packaging error of the material, the device also includes a coarse material component 4 and a fine material component 5. The coarse material component 4 is used to add the material into the packaging bag by roughly quantitative placement. Generally speaking, the amount of coarse material component 4 added at a time can be 300g, 400g or 500g, etc. First, the material weight is made close to the established packaging weight, and then the fine material component 5 is controlled to start through the cooperation of the weighing device 3 and the controller, and then a small amount of material is added, and finally the packaging weight is accurately approached, which plays a role in reducing the error.

[0036] Specifically, the coarse material classification component 4 is arranged at the bottom of the silo body 2 and is connected with the discharge port 412; the coarse material classification component 4 includes a coarse material classification container 41 and a first valve component 42; first, the coarse material classification container 41 is a sleeve-shaped structure in this embodiment, and the two ends of the coarse material classification container 41 have openings respectively, and the interior thereof is hollow; here, the openings at the two ends of the coarse material classification container 41 are respectively defined as a feed port 411 and a discharge port 412, the coarse material classification container 41 is fixedly installed at the bottom of the silo body 2, and the feed port 411 is connected with the through hole 21, and the material in the silo body 2 can fall into the coarse material classification container 41.

[0037] Furthermore, two groups of first valve components 42 are provided, and are respectively installed at positions near both ends of the coarse material distribution container 41. At the same time, avoidance ports are respectively opened at positions near both ends of the coarse material distribution container 41, and the avoidance ports are connected to the interior of the coarse material distribution container 41; one group of first valve components 42 opens and closes the feed port 411 via the avoidance ports, and the other group of first valve components 42 opens and closes the discharge port 412 via the other avoidance ports. The following description will be expanded by taking one group of first valve components 42 as an example.

[0038] Specifically, the first valve assembly 42 includes an opening and closing cylinder 421 and a valve plate 422. The opening and closing cylinder 421 is fixedly installed at the coarse material distribution container 41; at the same time, in the present embodiment, the opening contour of the avoidance port is consistent with the outer edge contour of the first valve, the valve plate 422 is fixedly installed on the telescopic rod of the opening and closing cylinder 421, and the valve plate 422 is inserted into the avoidance port and slidably abuts against the coarse material distribution container 41. At this time, the opening and closing cylinder 421 is started, and the opening and closing cylinder 421 can drive the valve plate 422 to movably pull in and out of the avoidance port, thereby movably opening and closing the feed port 411 or the discharge port 412.

[0039] It should be further explained that the opening and closing states of the two groups of first valve assemblies 42 are alternating. When one group of first valves closes the feed port 411, the other group opens the discharge port 412. Conversely, if the feed port 411 is opened, the discharge port 412 is closed. Through the above-mentioned state restrictions, when the first valve assembly 42 at the feed port 411 is opened and when the first valve assembly 42 at the discharge port 412 is closed, the material can enter the coarse material distribution container 41. When material distribution is required, the two first valve assemblies 42 are started at the same time, so that the feed port 411 is closed and the discharge port 412 is opened, and the material enters the packaging bag in a quantitative manner, thereby realizing the rough distribution of the material.

[0040] Continue to refer to Figure 2After the rough action is completed, the difference weight is supplemented through the fine material component 5. Specifically, the fine material component 5 includes a fine material container 51 and a second valve component 52, wherein the fine material container 51 is generally a sleeve-shaped structure, one end of the fine material container 51 is fixedly installed at the bottom of the bin body 2, and the fine material container 51 has a material distribution channel 511 running through both ends, one end of the material distribution channel 511 is connected to the through hole 21, and the material can be supplemented into the packaging bag from the material distribution channel 511.

[0041] Furthermore, in order to control the material to pass through the distribution channel 511 in small quantities, the distribution channel 511 can be set to a circular channel profile, and the diameter of the distribution channel 511 can be limited to between 5 and 10 cm. Specifically, the specific size of the distribution channel 511 can be 5 cm, 8 cm or 10 cm, etc. Different specifications can be selected according to the specific type of material, and no specific restrictions are made here. For example, in the present embodiment, for the material of rice, the diameter of the distribution channel 511 adopts a size of 5 cm. On the one hand, if the size is less than 5 cm, the rice may block the distribution channel 511 and affect the smoothness of the discharge; if it is greater than 10 cm, it may cause the rice to flow too quickly, which is not conducive to precise control. Based on this, after research and analysis, when the diameter of the distribution channel 511 is between 5 cm and 10 cm, it has a better bagging effect and can well meet the demand for small-scale discharge of materials.

[0042] Furthermore, the second valve assembly 52 is arranged on the fine material container 51, and is used to open and close the material distribution channel 511 to control the outflow of materials; specifically, the second valve assembly 52 includes a valve shaft 521 and a servo motor 522, wherein a receiving groove is provided on the fine material container 51, and the valve shaft 521 is rotatably provided in the receiving groove; at the same time, a discharge channel 5211 running through both sides is provided on the valve shaft 521, and the discharge channel 5211 is located in the material distribution channel 511; in addition, the servo motor 522 is fixedly installed on the fine material container 51 The output shaft of the servo motor 522 is fixedly connected to the valve shaft 521. Starting the servo motor 522 can drive the valve shaft 521 to rotate. During the rotation of the valve shaft 521, the discharge channel 5211 and the distribution channel 511 have at least two states. In the first state, the discharge channel 5211 is connected to the distribution channel 511, and rice can flow out; in the second state, the discharge channel 5211 is staggered with the distribution channel 511, and the distribution channel 511 is blocked, thereby realizing the active connection between the distribution channel 511 and the discharge channel 5211.

[0043] It should be noted that both the coarse material component 4 and the fine material component 5 use a controller for automatic action control. Specifically, the controller is electrically connected to the weighing device 3, the opening and closing cylinder 421 and the servo motor 522, respectively. The controller receives the electrical signal generated by the weighing device 3 and converts it into a control signal. The control signal is sent to the opening and closing cylinder 421 or the servo motor 522 to control the operation of the opening and closing cylinder 421 and the servo motor 522.

[0044] Reference Figure 3 In actual application, when the packaging bag is placed on the weighing device 3, during the process of filling the material, the rice may cause the packaging bag to tilt or deviate. In order to improve the stability of the packaging bag during the filling process, the device also includes two sets of clamping components 6, wherein the clamping components 6 are respectively installed on the frame 1 and located on the opposite sides of the weighing device 3, and are used to clamp the two sides of the bag body respectively.

[0045] Taking one group of clamping assemblies 6 as an example, the clamping assembly 6 includes a displacement cylinder 61 and a clamping cylinder 62, wherein the displacement cylinder 61 is fixedly installed on the frame 1, and the telescopic rod of the displacement cylinder 61 is horizontally arranged and faces the position of the weighing device 3; at the same time, a mounting seat is fixedly installed on the telescopic rod of the displacement cylinder 61, and the clamping cylinder 62 is fixedly installed on the mounting seat and is used to clamp the bag body.

[0046] At this time, the displacement cylinder 61 can drive the clamping cylinder 62 to be closer to or farther away from the bag body. When the clamping cylinders 62 in the two groups of clamping assemblies 6 clamp the bag body, the opening of the bag body can be opened by driving the two clamping cylinders closer to each other. The action is firm and not easy to loosen, so that rice can be filled into the bag body in a relatively stable state.

[0047] The implementation principle of the precise weighing device for agricultural granular materials in the embodiment of the present application is as follows: after placing the packaging bag on the weighing device 3, the clamping component 6 is started to clamp and stabilize the two sides of the bag body, and then the coarse material separation component 4 is started. The coarse material separation component 4 releases the material into the packaging bag to approach a predetermined filling weight, and then the coarse material separation component 4 is stopped, and the fine material separation component 5 is started. The fine material separation component 5 releases a small amount of material into the packaging bag to fine-tune the overall filling weight, thereby reducing the weight error.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An agricultural granular material precision weighing device, comprising a frame (1), a bin (2) and a weighing device (3), wherein the bin (2) and the weighing device (3) are respectively arranged on the frame (1), the bottom of the bin (2) has a through hole (21), and the bin (2) is located above the weighing device (3), characterized in that: Also includes A coarse material distribution component (4), which is arranged at the bottom of the bin body (2) and is in communication with the through hole (21), and is used to control the quantitative material to achieve the discharge; And a fine material component (5) is communicated with the bin body (2) and adjacent to the coarse material component (4) for supplementing the difference in weight.

2. The device for accurately weighing agricultural granular materials according to claim 1 is characterized in that: The coarse material component (4) comprises A coarse material distribution container (41) is fixedly arranged on the bin body (2), the coarse material distribution container (41) having a feed inlet (411) and a discharge outlet (412), the feed inlet (411) being in communication with the through hole (21); And the first valve assembly (42) is divided into two groups and is respectively arranged in the coarse material distribution container (41) and is used to alternately open and close the feed port (411) and the discharge port (412).

3. The device for accurately weighing agricultural granular materials according to claim 2 is characterized in that: The first valve assembly (42) includes An opening and closing cylinder (421) is fixedly arranged on the coarse material container (41); and a valve plate (422) fixedly arranged on the telescopic rod of the opening and closing cylinder (421); the valve plate (422) is slidably arranged on the coarse material distribution container (41) and is used for opening and closing the feed port (411) or the discharge port (412).

4. The device for accurately weighing agricultural granular materials according to claim 1, characterized in that: The fine material component (5) comprises A fine material container (51) is fixedly arranged on the bin body (2), and the fine material container (51) has a material distribution channel (511) communicating with the through hole (21); and a second valve assembly (52), which is arranged on the fine material distribution container (51) and is used for opening and closing the material distribution channel (511).

5. The device for accurately weighing agricultural granular materials according to claim 4, characterized in that: The diameter of the distribution channel (511) is 5-10 cm.

6. The device for accurately weighing agricultural granular materials according to claim 4, characterized in that: The second valve assembly (52) comprises A valve shaft (521) is rotatably disposed on the fine material container (51), and the valve shaft (521) is provided with a discharge channel (5211); and a servo motor (522), wherein the output shaft of the servo motor (522) is connected to the valve shaft (521) and is used to drive the valve shaft (521) to rotate so as to control the active communication between the discharge channel (5211) and the distribution channel (511).

7. The device for accurately weighing agricultural granular materials according to claim 1, characterized in that: It also comprises two groups of clamping assemblies (6), which are arranged on the frame (1) and are used to clamp the two sides of the bag body respectively.

8. The device for accurately weighing agricultural granular materials according to claim 7, characterized in that: The clamping assembly (6) comprises A displacement cylinder (61) is fixedly mounted on the frame (1), and a telescopic rod is horizontally arranged; and a clamping cylinder (62), which is fixedly arranged on the telescopic rod of the displacement cylinder (61) and is used for clamping the bag body.

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