Full-automatic grain volume weight measuring equipment

Abstract

The utility model discloses full-automatic grain volume weight measuring equipment which comprises a feeding assembly, a constant volume cylinder and a weighing assembly, the feeding assembly is vertically arranged, and the upper end of the feeding assembly is used for receiving materials; the constant volume cylinder is located below the feeding assembly, comprises an open end and a closed end and can be driven by a turnover mechanism to turn over. When the constant volume cylinder is located at the first position, the open end of the constant volume cylinder faces upwards and is opposite to the lower end of the feeding assembly, and the constant volume cylinder can receive materials output by the feeding assembly. When the constant volume cylinder is located at the second position, the open end faces downwards and does not correspond to the feeding port of the weighing assembly, and redundant materials beyond the preset volume can be discharged; and when the constant volume cylinder is at the third position, the opening end faces downwards and corresponds to the upper part of the feeding hole of the weighing assembly, and the to-be-measured material with the preset volume can be discharged. Therefore, the equipment can automatically measure the grain volume weight, manual participation is not needed, the labor intensity of workers is reduced, and the accuracy of volume weight measurement is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery and equipment, in particular to a fully automatic grain bulk density measuring device. Background Art

[0002] The bulk density of grain is the mass of grain per unit volume. It is usually expressed in grams per liter. The bulk density of grain indicates the maturity of grain and other grain qualities. Wheat, corn, rice and other grain crops are expressed in this way. For example, 710 grams, 730 grams, 750 grams, 770 grams, and 790 grams of wheat per liter are the grades of wheat 1, 2, 3, 4, and 5, respectively.

[0003] In the prior art, the methods for determining the bulk density of grains are mainly the measuring cylinder method and the bulk density apparatus method. The measuring cylinder method and the bulk density apparatus method are respectively introduced below.

[0004] The measuring cylinder method is used to determine the bulk density of grains. The required measuring equipment includes a measuring cylinder (taking 100mL as an example), a pan balance (taking 0.1g sensitivity as an example), a funnel (taking 150g capacity as an example), a measuring cup (taking 100mL as an example), and a grain selection screen. During the measurement process, a sample larger than 100mL is taken from a representative average sample, poured into a Φ2.0mm material selection screen for screening, and the sample on the screen is taken as the sample for determining the bulk density; take a prepared sample ≥100mL, and let the sample fall evenly from the lower end of the funnel into a 100mL measuring cylinder, and stop the operation when the sample is filled to the same level as the 100mL scale line; 3. Weighing: Pour 100mL of the sample in the measuring cylinder into the pan balance for weighing, read the number accurately and keep a record, and then calculate the bulk density based on the volume and mass.

[0005] The bulk density instrument method requires multiple cylinders. When checking the bulk density, fill the bulk density instrument with the grain to be checked. If there are three cylinders, fill the longest cylinder first. Assemble and unload it into the next cylinder. Use a blade-shaped device to separate and pour out the excess grain. Finally, weigh the weight, which is the bulk density.

[0006] However, the bulk density measurement used in the prior art requires much manual participation, and manual loading, pouring and unloading are required, which not only leads to high labor intensity for the staff, but also affects the accuracy of bulk density measurement due to manual operation.

[0007] Therefore, providing a fully automatic grain bulk density measuring device, so as to automatically measure the grain bulk density without human intervention, reduce the labor intensity of the staff, and ensure the accuracy of the bulk density measurement, has become an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0008] To this end, an embodiment of the utility model provides a fully automatic grain bulk density measuring device to at least partially solve the problem that the grain volume measurement method used in the prior art has high labor intensity for workers due to its high dependence on manual labor and the accuracy of bulk density measurement cannot be guaranteed.

[0009] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0010] The utility model provides a fully automatic grain bulk density measuring device, comprising a feeding component, a constant volume cylinder and a weighing component, wherein:

[0011] The feeding assembly is arranged vertically, and its upper end is used to receive materials;

[0012] The constant volume cylinder is located below the feeding assembly, comprises an open end and a closed end, and can be turned over under the drive of the turning mechanism;

[0013] When the constant volume cylinder is in the first position, its open end faces upward and is opposite to the lower end of the feed assembly, and can receive the material output by the feed assembly;

[0014] When the constant volume cylinder is in the second position, the opening end faces downward to discharge excess material beyond the preset volume;

[0015] When the constant volume cylinder is in the third position, the opening end faces downward and corresponds to the upper side of the feed port of the weighing component, and can discharge the preset volume of the material to be tested.

[0016] In some embodiments, the fully automatic grain bulk density measuring device further includes an avoidance drive mechanism:

[0017] The avoidance drive mechanism is in transmission connection with the feeding assembly so as to enable the feeding assembly to reciprocate in the vertical direction;

[0018] When the feeding assembly is at the lower limit position, the feeding assembly is connected to the constant volume cylinder at the first position;

[0019] When the feeding assembly moves upward, the feeding assembly is separated from the constant volume cylinder located at the first position.

[0020] In some embodiments, when the feeding assembly moves to the upper limit position, the distance between the feeding assembly and the constant volume cylinder located at the first position is not less than 4 mm;

[0021] The avoidance drive mechanism includes a vertical guide rail, a drive motor and a screw nut pair. A guide seat is slidably mounted on the vertical guide rail. The guide seat is connected to the feed assembly. The screw nut pair is transmission-connected to the drive motor via a screw, and the nut of the screw nut pair is connected to the guide seat.

[0022] In some embodiments, a material retaining ring groove for collecting overflowing materials is provided on the outer side of the open end of the constant volume cylinder.

[0023] In some embodiments, the feed assembly includes a baffle plate for guiding and collecting splashed or spilled materials.

[0024] In some embodiments, the flipping is performed in a vertical plane;

[0025] The constant volume cylinder is in a vertical state when in the first position;

[0026] When the constant volume cylinder is in the second position, it is turned counterclockwise by 90° to 270° relative to the vertical state;

[0027] When the constant volume cylinder is in the third position, it is turned counterclockwise by 90° to 270°90 relative to the vertical state;

[0028] The flip mechanism comprises a flip motor and a flip fixing frame, wherein the flip fixing frame is installed on the constant volume cylinder, and the output shaft of the flip motor is drivingly connected to the flip fixing frame.

[0029] In some embodiments, the weighing assembly includes a weighing container and a weighing sensor:

[0030] The weighing container is provided with a feeding port at the upper end and a discharging port controlled to open and close by a flap at the lower end. The flap is driven by a flap motor. When the flap is opened, the discharging port is connected to a vacuum discharging device.

[0031] The weighing sensor is a cantilever beam type weighing sensor.

[0032] In some embodiments, a constant volume valve plate is provided near the open end of the constant volume cylinder, and an exhaust hole is provided at the closed end;

[0033] When the constant volume cylinder is in the initial state, the constant volume cylinder is in the first position and the constant volume valve plate is closed, and an exhaust hammer is arranged between the constant volume valve plate and the open end, and the exhaust hammer can slide along the axis of the constant volume cylinder after the constant volume valve plate is opened;

[0034] When the constant volume cylinder is in the second position, the constant volume valve plate is closed, and the exhaust hammer is located at the closed end of the constant volume cylinder;

[0035] When the constant volume cylinder is in the third position, the constant volume valve plate is opened, and the exhaust hammer slides toward the open end of the constant volume cylinder;

[0036] The device further comprises a retractable blocking member, which is extended to prevent the exhaust hammer from sliding out of the constant volume cylinder when the constant volume cylinder is flipped to the third position.

[0037] In some embodiments, the feeding assembly includes a grain barrel and an intermediate barrel, wherein the intermediate barrel is arranged between the grain barrel and the constant volume barrel, the feeding port of the grain barrel is the upper end of the feeding assembly, the upper end of the intermediate barrel and the lower end of the grain barrel can be cut off from communication through an intermediate valve plate, and the lower end of the intermediate barrel is the lower end of the feeding assembly.

[0038] The fully automatic grain bulk density measuring equipment provided by the utility model comprises a feeding component, a constant volume cylinder and a weighing component, wherein the feeding component is vertically arranged, and its upper end is used to receive materials; the constant volume cylinder is located below the feeding component, comprises an open end and a closed end, and can be turned over under the drive of a turning mechanism; when the constant volume cylinder is in the first position, its open end faces upward and is opposite to the lower end of the feeding component, and can receive materials output by the feeding component; when the constant volume cylinder is in the second position, the open end faces downward to discharge excess materials beyond a preset volume; when the constant volume cylinder is in the third position, the open end faces downward and corresponds to the top of the feeding port of the weighing component, and can discharge the preset volume of material to be measured.

[0039] During the working process, the material to be tested is received by the feeding assembly. When the constant volume cylinder is in the first position, the feeding assembly conveys the material to be tested into the constant volume cylinder, and the constant volume is carried out in the constant volume cylinder. The material to be tested after constant volume enters the weighing assembly through the discharge end, and the mass of the material to be tested is weighed in the weighing assembly, thereby completing the automatic measurement of volume and mass; when the constant volume cylinder is in the second position or the third position, the excess material can be discharged. In this way, the grain bulk density can be automatically measured by using the fully automatic grain bulk density measurement equipment without manual participation, which reduces the labor intensity of the staff, eliminates the influence of manual operation on the data, and ensures the accuracy of bulk density measurement; at the same time, the switching of the feeding and discharging processes is realized by flipping the constant volume cylinder, which improves the efficiency of feeding and discharging, and solves the problem that the grain capacity measurement method used in the prior art has a large labor intensity of the staff due to the large dependence on manual labor, and the accuracy of bulk density measurement cannot be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0041] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0042] Figure 1 This is one of the structural schematic diagrams of the fully automatic grain bulk density measuring device provided by the utility model;

[0043] Figure 2 This is the second structural schematic diagram of the fully automatic grain bulk density measuring device provided by the utility model;

[0044] Figure 3 This is the third structural schematic diagram of the fully automatic grain bulk density measuring device provided by the utility model;

[0045] Figure 4 This is the fourth structural schematic diagram of the fully automatic grain bulk density measuring device provided by the utility model;

[0046] Figure 5 This is one of the partial structural schematic diagrams of the fully automatic grain bulk density measuring device provided by the utility model;

[0047] Figure 6 This is the second partial structural schematic diagram of the fully automatic grain bulk density measuring device provided by the utility model;

[0048] Figure 7 This is the third partial structural schematic diagram of the fully automatic grain bulk density measuring device provided by the utility model.

[0049] Description of reference numerals:

[0050] 1-box, 11-electrical cabinet, 12-travel wheel, 13-display screen;

[0051] 2-Grain barrel;

[0052] 3- Constant volume cylinder;

[0053] 4-intermediate tube;

[0054] 51-turning motor, 52-turning fixing frame;

[0055] 61-vertical guide rail, 62-driving motor, 63-lead screw, 64-nut, 65-guide seat;

[0056] 7- material blocking trough plate;

[0057] 8-Weighing assembly. DETAILED DESCRIPTION

[0058] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0059] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on the present technical solution. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0060] In a specific embodiment, Figure 1-7 As shown, the grain bulk density fully automatic measuring device provided by the utility model is used to measure the bulk density of cereals, wheat, corn, etc. The grain bulk density fully automatic measuring device comprises a feeding component, a constant volume cylinder and a weighing component 8. The feeding component is vertically arranged, and its upper end is used to receive materials. The constant volume cylinder is located below the feeding component, and comprises an open end and a closed end. The constant volume cylinder receives the material to be measured through the open end, and outputs the material to be measured of a preset volume through the open end after turning over. During the working process, the material conveying platform moves to the specified position above the constant volume assembly to put the material The material is poured into the constant volume cylinder through the feed end, and the constant volume cylinder is flipped under the drive of the flipping mechanism. The constant volume cylinder can be flipped to the first position, the second position and the third position during operation. When the constant volume cylinder is in the first position, its open end faces upward and is opposite to the lower end of the feed component, and can receive the material output by the feed component; when the constant volume cylinder is in the second position, the open end faces downward to discharge excess material beyond the preset volume; when the constant volume cylinder is in the third position, the open end faces downward and corresponds to the top of the feed port of the weighing component, and can discharge the preset volume of material to be measured.

[0061] The flipping of the constant volume cylinder is carried out in a vertical plane; wherein, the constant volume cylinder is in a vertical state in the first position, the constant volume cylinder is flipped 90° to 270° counterclockwise relative to the vertical state in the second position, and the constant volume cylinder is flipped 90° to 270° counterclockwise relative to the vertical state in the third position.

[0062] The weighing assembly 8 receives the material to be tested output by the constant volume cylinder and weighs the material to be tested. The weighing assembly 8 can be a weighing sensor or an electronic balance or other measuring device. The weighing assembly includes a weighing container and a weighing sensor. The upper end of the weighing container is provided with a feed port, and the lower end is provided with a discharge port controlled to open and close by a flap. The flap is driven by a flap motor. When the flap is opened, the discharge port is connected to a vacuum discharge device; the weighing sensor is a cantilever beam weighing sensor. The weighing sensor can be a cantilever scale. When the constant volume cylinder flips to the third position, the open end is connected to the weighing bucket of the cantilever scale, and the constant volume container discharges a preset volume of the material to be tested into the weighing bucket. In order to ensure the measurement accuracy, there needs to be a certain distance between the weighing bucket and the open end. The connection here means that the two are arranged relative to each other, and the material at the discharge end can enter the weighing bucket. During the working process, after the cantilever scale is initialized, the material to be tested after the constant volume falls into the weighing bucket, and the cantilever scale measures the weight of the material. The cantilever scale is a high-precision electronic scale with a measuring range of 300g and an accuracy of 0.01. It should be understood that since the cantilever scale is an electronic scale, its measured value can be synchronized to the main control unit of the device, and the measured value can also be displayed on the display screen 13. The control logic and measurement logic are the same as the prior art, and will not be described in detail in this article.

[0063] Generally, the feeding assembly, the constant volume cylinder and the weighing assembly 8 can be installed in the box 1 of the equipment. In order to ensure that the equipment can be easily transferred, a walking wheel 12 is also provided under the box 1. An electrical cabinet 11 is also arranged in the box 1, which is used to centrally place the equipment cable control end and electrical components such as electrical switches in the electrical cabinet to improve the neatness of the internal components of the equipment box 1. A display screen 13 can also be provided on the outside of the box 1 to display the detection data and working status of the equipment.

[0064] In some preferred embodiments, the feeding assembly is a grain barrel 2 and a constant volume barrel 3; the feeding assembly is vertically arranged, and its upper end is used to receive materials. The constant volume barrel is located below the feeding assembly, includes an open end and a closed end, and can be flipped under the drive of a flipping mechanism; when the constant volume barrel is in the first position, its open end faces upward and is opposite to the lower end of the feeding assembly, and can receive materials output by the feeding assembly; when the constant volume barrel is in the second position, the open end faces downward to discharge excess materials beyond the preset volume; when the constant volume barrel is in the third position, the open end faces downward and corresponds to the top of the feed port of the weighing assembly, and can discharge the preset volume of material to be measured. The feed port 21 of the grain barrel 2 serves as the feed end of the feed assembly. The material to be tested first enters the grain barrel 2. After the grain barrel 2 is filled, the passage between the constant volume barrel and the grain barrel 2 is connected, and the material to be tested in the grain barrel 2 enters the constant volume barrel 3. The volume of the constant volume barrel 3 is a preset volume. When the constant volume barrel 3 is filled with material, the volume of the material to be tested is the required volume. In this way, the constant volume is achieved by using multiple cylindrical structures connected in series, the structure is relatively simple, and the cost of equipment processing and manufacturing is low.

[0065] Furthermore, in order to avoid splashing of falling materials, the feed assembly includes a blocking trough plate for guiding and collecting splashing or overflowing materials, and the blocking trough plate 7 is installed on the outside of the grain barrel 2, and the blocking trough plate 7 is located below the inlet end, for blocking and receiving splashing materials. Based on similar technical effects, a blocking ring groove for collecting overflowing materials is provided on the outside of the opening end of the constant volume barrel.

[0066] It should be understood that the communication or cutoff between the constant volume cylinder 3 and the grain cylinder 2 can be achieved through the gate valve. When the flap of the gate valve is extended, the constant volume cylinder 3 is separated from the grain cylinder 2, so that the constant volume cylinder 3 and the grain cylinder 2 are in a cutoff state; when the flap of the gate valve is retracted, the channel between the constant volume cylinder 3 and the grain cylinder 2 is opened, so that the constant volume cylinder 3 and the grain cylinder 2 are in a communication state.

[0067] In actual use scenarios, the actual volume of the material in the grain barrel 2 may be greater than the rated volume of the constant volume barrel 3. In order to avoid the residual material in the grain barrel 2 affecting the further material discharge, in some embodiments, the constant volume assembly further includes an intermediate barrel 4, which is disposed between the grain barrel 2 and the constant volume barrel 3, and the intermediate barrel 4 is connected to the grain barrel 2, and the constant volume barrel 3 is connected or cut off from the grain barrel 2 through the intermediate barrel 4. In this way, the material output from the grain barrel 2 is buffered by the intermediate barrel 4, and the intermediate barrel 4 is always connected to the grain barrel 2. The residual material in the grain barrel 2 can be temporarily stored in the intermediate barrel 4, which will not affect the secondary material discharge of the grain barrel 2, thereby improving work continuity and work efficiency. It should be understood that when there is an intermediate cylinder 4, the above-mentioned gate valve can be arranged between the intermediate cylinder 4 and the constant volume cylinder 3. When the flap of the gate valve is extended, the constant volume container and the intermediate cylinder 4 are separated, so that the constant volume cylinder 3 and the intermediate cylinder 4 are in a cut-off state; when the flap of the gate valve is retracted, the channel between the constant volume container and the intermediate cylinder 4 is opened, so that the constant volume cylinder 3 and the intermediate cylinder 4 are in a connected state.

[0068] That is to say, the gate valve is arranged between the intermediate cylinder 4 and the constant volume cylinder 3; when the gate valve is in a conducting state, the intermediate cylinder 4 is connected to the constant volume cylinder 3, and when the gate valve is in a blocking state, the intermediate cylinder 4 is blocked from the constant volume cylinder 3.

[0069] Theoretically, the cutoff and connection between the constant volume cylinder 3 and the weighing assembly 8 can also be achieved by using structures such as valves, and are not limited to the above-mentioned specific implementation methods.

[0070] Specifically, the flip mechanism includes a flip motor 51 and a flip fixing frame 52, wherein the flip fixing frame 52 is mounted on the fixed volume cylinder 3, and the output shaft of the flip motor 51 is in driving connection with the flip fixing frame 52. During the flipping process, the flip motor 51 is started to drive the flip fixing frame 52 to rotate on a vertical plane, thereby driving the fixed volume cylinder 3 connected to the flip fixing frame 52 to rotate on a vertical plane. The flip motor 51 may be a servo motor or a stepping motor.

[0071] In order to improve the connection reliability, the flip fixing frame 52 is a horizontal U-shaped frame, and the two mounting arms of the U-shaped frame are respectively fixed to the cylinder walls at the upper and lower ends of the constant volume cylinder 3. The mounting arms can be connected to the cylinder wall through a hoop to ensure installation reliability and convenient disassembly and assembly.

[0072] Furthermore, the grain bulk density fully automatic measuring device also includes an avoidance drive mechanism, which is transmission-connected with the feeding assembly so that the feeding assembly reciprocates in the vertical direction; when the feeding assembly is in the lower limit position, the feeding assembly is connected to the fixed volume cylinder located in the first position; when the feeding assembly moves upward, the feeding assembly is separated from the fixed volume cylinder located in the first position. Since the fixed volume cylinder 3 is flipped during operation, the avoidance drive mechanism is used to drive the intermediate cylinder 4 to move in the vertical direction. When flipping, the intermediate cylinder 4 can move upward to separate from the fixed volume cylinder 3, and when feeding, the intermediate cylinder 4 can move downward to be sealed and connected with the fixed volume cylinder 3. In this way, by setting the avoidance drive mechanism, the connection between the fixed volume cylinder 3 and the intermediate cylinder 4 is guaranteed, and the interference of the intermediate cylinder 4 with the fixed volume cylinder 3 during flipping is avoided.

[0073] Specifically, when the feeding assembly moves to the upper limit position, the spacing between it and the constant volume cylinder in the first position is not less than 4 mm; the avoidance drive mechanism includes a vertical guide rail 61, a drive motor 62 and a screw nut pair; wherein, a guide seat 65 is slidably mounted on the vertical guide rail 61, the guide seat 65 is connected to the feeding assembly, the screw nut pair is transmission-connected to the drive motor 62 via a screw 63, and the nut 64 of the screw nut pair is connected to the guide seat 65.

[0074] In some embodiments, a constant volume valve plate is provided near the open end of the constant volume cylinder, and an exhaust hole is provided at the closed end; when the constant volume cylinder is in an initial state, the constant volume cylinder is in a first position and the constant volume valve plate is closed, an exhaust hammer is provided between the constant volume valve plate and the open end, and the exhaust hammer can slide along the axis of the constant volume cylinder after the constant volume valve plate is opened; when the constant volume cylinder is in a second position, the constant volume valve plate is closed, and the exhaust hammer is located at the closed end of the constant volume cylinder; when the constant volume cylinder is in a third position, the constant volume valve plate is opened, and the exhaust hammer slides toward the open end of the constant volume cylinder; the device also includes a retractable blocking member, and when the constant volume cylinder is flipped to the third position, the blocking member extends to prevent the exhaust hammer from sliding out of the constant volume cylinder.

[0075] The feeding assembly includes a grain barrel and an intermediate barrel, wherein the intermediate barrel is arranged between the grain barrel and the constant volume barrel, the feeding port of the grain barrel is the upper end of the feeding assembly, the upper end of the intermediate barrel and the lower end of the grain barrel can be cut off and connected through an intermediate valve plate, and the lower end of the intermediate barrel is the lower end of the feeding assembly. During operation, the exhaust hammer slides down along the constant volume barrel 3. During the falling process, the exhaust hammer will press out the air in the constant volume barrel 3, so that the exhaust of the constant volume barrel 3 can be achieved through the cooperation of the exhaust hammer and the air guide hole, avoiding the problem of reduced accuracy of the constant volume barrel 3 due to the presence of gas, thereby ensuring the accuracy of the constant volume barrel 3.

[0076] In the above-mentioned specific embodiment, the fully automatic grain bulk density measuring equipment provided by the utility model includes a constant volume component and a weighing component; wherein, the constant volume component receives the material to be measured through the feed end, and outputs the material to be measured of a preset volume through the discharge end; the weighing component is connected or cut off with the discharge end of the constant volume component, and when the weighing component is connected with the constant volume component, the weighing component receives the material to be measured output by the constant volume component, and weighs the material to be measured.

[0077] During the working process, the platform unloading mechanism is used to transport materials to the constant volume component, and the constant volume component outputs the preset volume of the material to be tested, and the constant volume of the material to be tested enters the weighing component through the discharge end, and the mass of the material to be tested is weighed in the weighing component, so that the automatic measurement of volume and mass can be completed. In this way, the grain bulk density can be automatically measured by using the grain bulk density automatic measurement equipment without manual participation, which reduces the labor intensity of the staff, eliminates the influence of manual operation on the data, ensures the accuracy of bulk density measurement, and solves the problem that the grain volume measurement method used in the prior art has a large labor intensity of the staff due to the large dependence on manual labor, and the accuracy of bulk density measurement cannot be guaranteed.

[0078] It should be noted that the following embodiments and features in the embodiments may be combined with each other in the absence of conflict; and, based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making any creative work are within the scope of protection of the present disclosure.

[0079] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein may be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present disclosure, it should be understood by those skilled in the art that an aspect described herein may be implemented independently of any other aspect, and two or more of these aspects may be combined in various ways. For example, any number of aspects described herein may be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein may be used to implement this device and / or practice this method.

[0080] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A fully automatic grain bulk density measuring device, characterized in that: It comprises a feeding assembly, a constant volume cylinder (3) and a weighing assembly, wherein: The feed assembly is arranged vertically, and its upper end is used to receive materials; the constant volume cylinder (3) is located below the feed assembly, comprises an open end and a closed end, and can be turned over under the drive of the turning mechanism; When the constant volume cylinder (3) is in the first position, its open end faces upward and is opposite to the lower end of the feed assembly, and can receive the material output by the feed assembly; When the constant volume cylinder (3) is in the second position, the opening end faces downward to discharge excess material beyond the preset volume; When the constant volume cylinder (3) is in the third position, the opening end faces downward and corresponds to the upper side of the feed port of the weighing component, and can discharge the preset volume of the material to be measured.

2. The fully automatic grain bulk density measuring device according to claim 1 is characterized in that: Also includes avoidance drive mechanism: The avoidance drive mechanism is in transmission connection with the feeding assembly so as to enable the feeding assembly to reciprocate in the vertical direction; When the feed assembly is at the lower limit position, the feed assembly is connected to the constant volume cylinder (3) located at the first position; When the feeding assembly moves upward, the feeding assembly is separated from the constant volume cylinder (3) located at the first position.

3. The fully automatic grain bulk density measuring device according to claim 2 is characterized in that: When the feeding assembly moves to the upper limit position, the distance between the feeding assembly and the constant volume cylinder (3) located at the first position is not less than 4 mm; The avoidance drive mechanism comprises a vertical guide rail (61), a drive motor (62) and a screw nut pair, a guide seat (65) being slidably mounted on the vertical guide rail (61), the guide seat (65) being connected to the feed assembly, the screw nut pair being transmission-connected to the drive motor (62) via a screw (63), and a nut (64) of the screw nut pair being connected to the guide seat (65).

4. The fully automatic grain bulk density measuring device according to claim 1, characterized in that: The outer side of the open end of the constant volume cylinder (3) is provided with a material blocking ring groove for collecting overflowing materials.

5. The fully automatic grain bulk density measuring device according to claim 1, characterized in that: The feed assembly includes a material blocking chute plate for guiding and collecting splashed or overflowed materials.

6. The fully automatic grain bulk density measuring device according to claim 1, characterized in that: The flipping is performed in a vertical plane; The constant volume cylinder (3) is in a vertical state when in the first position; When the constant volume cylinder (3) is in the second position, it is turned counterclockwise by 90° to 270° relative to the vertical state; When the constant volume cylinder (3) is in the third position, it is turned counterclockwise by 90° to 270° relative to the vertical state; The flip mechanism comprises a flip motor (51) and a flip fixing frame (52); the flip fixing frame (52) is mounted on the constant volume cylinder (3); and the output shaft of the flip motor (51) is drivingly connected to the flip fixing frame (52).

7. The fully automatic grain bulk density measuring device according to claim 1, characterized in that: The weighing assembly comprises a weighing container and a weighing sensor: The weighing container is provided with a feeding port at the upper end and a discharging port controlled to open and close by a flap at the lower end. The flap is driven by a flap motor. When the flap is opened, the discharging port is connected to a vacuum discharging device. The weighing sensor is a cantilever beam type weighing sensor.

8. The fully automatic grain bulk density measuring device according to any one of claims 1 to 7, characterized in that: The constant volume cylinder (3) is provided with a constant volume valve plate near the open end, and a vent hole is provided at the closed end; When the constant volume cylinder (3) is in an initial state, the constant volume cylinder is in a first position and the constant volume valve plate is closed, an exhaust hammer is arranged between the constant volume valve plate and the open end, and the exhaust hammer can slide along the axis of the constant volume cylinder (3) after the constant volume valve plate is opened; When the constant volume cylinder (3) is in the second position, the constant volume valve plate is closed, and the exhaust hammer is located at the closed end of the constant volume cylinder (3); When the constant volume cylinder (3) is in the third position, the constant volume valve plate is opened, and the exhaust hammer slides toward the open end of the constant volume cylinder (3); The device further comprises a retractable blocking member, which is extended when the constant volume cylinder (3) is flipped to the third position to prevent the exhaust hammer from sliding out of the constant volume cylinder (3).

9. The fully automatic grain bulk density measuring device according to claim 8, characterized in that: The feeding assembly comprises a grain barrel (2) and an intermediate barrel (4); the intermediate barrel (4) is arranged between the grain barrel (2) and the constant volume barrel (3); the feeding port (21) of the grain barrel (2) is the upper end of the feeding assembly; the upper end of the intermediate barrel (4) and the lower end of the grain barrel (2) can be cut off from communication via an intermediate valve plate; the lower end of the intermediate barrel (4) is the lower end of the feeding assembly.

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