High-precision powder weightlessness scale

Abstract

The utility model relates to the technical field of weightlessness scales, in particular to a high-precision powder weightlessness scale, the end part of an output shaft of a first motor is fixedly connected with a spiral blade, the spiral blade is rotatably connected with a transverse pipe through a bearing, the high-precision powder weightlessness scale is characterized in that an output shaft of a third motor rotates to drive a disc to rotate so as to drive an incomplete gear to rotate; a first sliding block moves to drive a first gear to rotate, and the first gear rotates to drive a second gear to rotate, so that a rotating rod rotates, a stirring roller can rotate back and forth, a powdery fertilizer can be uniformly stirred in a short time, and the working efficiency is improved; according to the powdery fertilizer metering device, the angle of the spiral blade can be adjusted, the situation that part of powdery fertilizer is discharged before being metered is avoided, the powdery fertilizer metering precision is higher, the probability that products produced subsequently are unqualified is reduced, and therefore the working quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of loss-in-weight scales, specifically a high-precision loss-in-weight scale for powder materials. Background Technology

[0002] A loss-in-weight weigher is an automatic weighing device that achieves high-precision continuous quantitative feeding through static weighing. The function of a loss-in-weight weigher is to provide reliable, accurate and stable feeding of dry bulk materials such as powders, granules and flakes, thereby reducing material waste and improving the consistency of mixtures.

[0003] For example, a high-precision powder loss-in-weight scale with authorization announcement number "CN220333598U" can continuously and stably convey powder through the agitator blades in its anti-clogging section in conjunction with the auger, avoiding blockage problems caused by powder compaction or agglomeration. The vibrating discharge section provides vibrational force to prevent powder from sticking to the hopper wall. This loss-in-weight scale has vibration capability and can continuously convey powder. However, this high-precision powder loss-in-weight scale uses a motor to drive the agitator blades to stir the powder. Because the blades rotate in only one direction, it takes a long time to achieve uniform mixing, thus reducing work efficiency. Furthermore, because the auger is horizontally placed, and the powder is very fine and has good flowability, some powder is discharged before being measured, resulting in inaccurate powder measurement and consequently, substandard products in subsequent production, reducing work quality. Utility Model Content

[0004] The purpose of this invention is to solve the problems of powder mixing by motor-driven stirring blades, which require a long time to achieve uniform mixing due to the unidirectional rotation, thus reducing work efficiency. Furthermore, in this high-precision powder loss-in-weight scale, the auger is horizontally placed, and the powder is too fine and has good flowability, causing some powder to be discharged before being measured, resulting in inaccurate powder measurement and consequently, substandard products and reduced work quality. Therefore, this invention proposes a high-precision powder loss-in-weight scale.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design a high-precision powder loss-in-weight scale, including a base plate and a housing. The base plate is provided with an auxiliary discharge mechanism, and the surface of the housing is provided with an auxiliary stirring mechanism. The surface of the base plate is provided with a feed inlet and a first discharge outlet. The surface of the discharge outlet is fixedly connected to the surface of a horizontal tube. A first motor is fixedly connected to the inner wall of the horizontal tube through a bracket. A spiral blade is fixedly connected to the end of the output shaft of the first motor. The spiral blade is rotatably connected to the horizontal tube through a bearing.

[0007] Preferably, the surface of the horizontal tube is provided with a second discharge port, the box body is fixedly connected to the surface of the horizontal plate by a bracket, and a pressure sensor is installed on the surface of the horizontal plate.

[0008] Preferably, the auxiliary discharge mechanism includes a first housing, a second motor is fixedly connected to the inner wall of the first housing via a bracket, a threaded rod is fixedly connected to the end of the output shaft of the second motor, the threaded rod is threadedly connected to a second slider, the protruding part of the second slider is slidably connected to a groove machined on the inner wall of the first housing, the second slider is movably connected to two connecting rods via pins, both connecting rods are movably connected to a top rod via pins, and the top rod passes through the first housing via a through hole.

[0009] Preferably, the top rod is movably connected to the first slider via a pin, and the surface of the first outer shell is fixedly connected to the surface of the base plate.

[0010] Preferably, the auxiliary stirring mechanism includes a second outer shell, the surface of which is fixedly connected to the surface of the housing. A third motor is fixedly connected to the inner wall of the second outer shell via a bracket. A disc is fixedly connected to the end of the output shaft of the third motor. An incomplete gear is fixedly connected to the surface of the disc. The teeth machined on the disc mesh with the tooth grooves machined on the first gear. The first gear is rotatably connected to the second outer shell via a rotating shaft and a bearing. The first gear meshes with the second gear. The second gear is rotatably connected to a protruding part of the inner wall of the second outer shell via a pin. A rotating rod is fixedly connected to the surface of the second gear. The rotating rod is rotatably connected to the second outer shell via a bearing.

[0011] Preferably, a first slider is slidably engaged in a groove machined on the horizontal plate, and a vertical plate is fixedly connected to the surface of the horizontal plate. The vertical plate is movably connected to the raised surface of the base plate via a pin.

[0012] Preferably, the rotating rod is rotatably connected to the housing via a bearing, and a stirring roller is fixedly connected to the end of the rotating rod.

[0013] The high-precision powder loss-in-weight scale proposed in this utility model has the following advantages: through the cooperation of the stirring roller and the auxiliary stirring mechanism, the output shaft of the third motor rotates to drive the disc to rotate, which in turn drives the incomplete gear to rotate, and at the same time drives the first gear to rotate. The rotation of the first gear drives the second gear to rotate, thereby rotating the rotating rod, so that the stirring roller can rotate back and forth. It can mix the powdered fertilizer evenly in a shorter time, thereby improving work efficiency.

[0014] Through the cooperation of the horizontal plate and the auxiliary discharge mechanism, the output shaft of the second motor rotates, which drives the threaded rod to rotate, thereby driving the second slider to slide along the groove processed on the inner wall of the first housing. The movement of the second slider drives the two connecting rods to move, which in turn drives the top rod to move, so that the angle of the spiral blade can be adjusted. This prevents some powdered fertilizer from being discharged before being metered, making the metering accuracy of powdered fertilizer more precise, reducing the probability of subsequent products being unqualified, and thus improving the quality of work. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 A front sectional view;

[0017] Figure 3 for Figure 1 A partial bottom sectional view of the auxiliary stirring mechanism;

[0018] Figure 4 for Figure 1 Partial top sectional view;

[0019] Figure 5 for Figure 1 A front sectional view of the auxiliary stirring mechanism;

[0020] Figure 6 for Figure 2 A front sectional view of the auxiliary discharge mechanism.

[0021] In the diagram: 1. Base plate, 2. Vertical plate, 3. Auxiliary discharge structure, 301. First outer shell, 302. Second motor, 303. Threaded rod, 304. Second slider, 305. Connecting rod, 306. Top rod, 4. First slider, 5. Second discharge port, 6. Spiral blade, 7. First discharge port, 8. Box body, 9. Auxiliary stirring mechanism, 901. Second outer shell, 902. Third motor, 903. Disc, 904. Incomplete gear, 905. First gear, 906. Second gear, 907. Rotating rod, 10. Feed inlet, 11. Stirring roller, 12. First motor, 13. Pressure sensor, 14. Horizontal plate, 15. Horizontal tube. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] See attached document Figure 1-6In this embodiment, a high-precision powder loss-in-weight scale includes a base plate 1 and a housing 8. The base plate 1 is provided with an auxiliary discharge mechanism 3, and the surface of the housing 8 is provided with an auxiliary stirring mechanism 9. The surface of the base plate 1 is provided with a feed inlet 10 and a first discharge outlet 7. The surface of the discharge outlet 7 is fixedly connected to the surface of the horizontal tube 15. The inner wall of the horizontal tube 15 is fixedly connected to a first motor 12 through a bracket. The models of the first motor 12, the second motor 302, and the third motor 902 are selected according to actual needs to meet the working requirements. The output shaft end of the first motor 12 is fixedly connected to a spiral blade 6. The rotation of the output shaft of the first motor 12 drives the spiral blade 6 to rotate. The spiral blade 6 is rotatably connected to the horizontal tube 15 through a bearing.

[0024] The horizontal tube 15 has a second discharge port 5 on its surface. The box body 8 is fixedly connected to the surface of the horizontal plate 14 via a bracket. A pressure sensor 13 is installed on the surface of the horizontal plate 14. The pressure sensor 13 has been disclosed in the authorized announcement number "CN220333598U". The top rod 306 is movably connected to the first slider 4 via a pin. The movement of the top rod 306 drives the first slider 4 to move. The surface of the first outer shell 301 is fixedly connected to the surface of the bottom plate 1. The first slider 4 is slidably engaged in the groove processed on the horizontal plate 14. The first slider 4 slides along the groove processed on the horizontal plate 14. A vertical plate 2 is fixedly connected to the surface of the horizontal plate 14. The vertical plate 2 is movably connected to the raised surface of the bottom plate 1 via a pin. The rotating rod 907 is rotatably connected to the box body 8 via a bearing. A stirring roller 11 is fixedly connected to the end of the rotating rod 907. The rotation of the rotating rod 907 drives the stirring roller 11 to rotate.

[0025] See attached document Figure 6

[0026] The auxiliary discharge mechanism 3 includes a first housing 301. A second motor 302 is fixedly connected to the inner wall of the first housing 301 via a bracket. A threaded rod 303 is fixedly connected to the end of the output shaft of the second motor 302. The threaded rod 303 is threadedly connected to a second slider 304. The protruding part of the second slider 304 is slidably connected to a groove machined on the inner wall of the first housing 301. The second slider 304 is movably connected to two connecting rods 305 via pins. Both connecting rods 305 are movably connected to a top rod 306 via pins. The top rod 306 passes through the first housing 301 through a through hole. The rotation of the output shaft of the second motor 302 drives the threaded rod 303 to rotate, thereby driving the second slider 304 to slide along the groove machined on the inner wall of the first housing 301. The movement of the second slider 304 drives the two connecting rods 305 to move, thereby driving the top rod 306 to move.

[0027] See attached document Figure 3 and attached Figure 5

[0028] The auxiliary stirring mechanism 9 includes a second outer shell 901, the surface of which is fixedly connected to the surface of the housing 8. A third motor 902 is fixedly connected to the inner wall of the second outer shell 901 via a bracket. A disc 903 is fixedly connected to the end of the output shaft of the third motor 902. An incomplete gear 904 is fixedly connected to the surface of the disc 903. The teeth machined on the disc 903 mesh with the tooth grooves machined on the first gear 905. The first gear 905 is rotatably connected to the second outer shell 901 via a rotating shaft and bearings. The first gear 905 meshes with a second gear 906. The second gear 906 is rotatably connected to a protruding part of the inner wall of the second outer shell 901 via a pin. A rotating rod 907 is fixedly connected to the surface of the second gear 906. The rotating rod 907 is rotatably connected to the second outer shell 901 via bearings. The rotation of the output shaft of the third motor 902 drives the disc 903 to rotate, thereby driving the incomplete gear 904 to rotate, and simultaneously driving the first gear 905 to rotate. The rotation of the first gear 905 drives the second gear 906 to rotate, thereby causing the rotating rod 907 to rotate.

[0029] Working principle:

[0030] When using a high-precision loss-in-weight scale to convey powder:

[0031] Preparation process:

[0032] First, the operator manually adds the weighed powdered fertilizer into the box 1 through the feed inlet 10.

[0033] Powdered fertilizer mixing process:

[0034] The operator starts the power supply of the third motor 902. The output shaft of the third motor 902 rotates, driving the disc 903 to rotate, which in turn drives the incomplete gear 904 to rotate. When the first gear 905 meshes with the teeth machined on the incomplete gear 904 and the disc 903 respectively, it drives the first gear 905 to rotate back and forth. The rotation of the first gear 905 drives the second gear 906 to rotate back and forth, which in turn drives the rotating rod 907 to rotate back and forth. The rotation of the rotating rod 907 drives the mixing roller 11 to rotate back and forth, so as to quickly and evenly mix the powdered fertilizer, thereby improving work efficiency.

[0035] Horizontal pipe adjustment and discharge process:

[0036] Start the power supply of the second motor 302. The second motor 302 is a servo motor. The output shaft of the second motor 302 rotates forward, driving the threaded rod 303 to rotate, thereby driving the second slider 304 to slide along the groove processed on the inner wall of the first housing 301. The second slider 304 moves to the right, driving the two connecting rods 305 to move, thereby driving the top rod 306 to move to the right. When the end of the top rod 306 is in contact with the inner wall of the first housing 301, the top rod 306 moves upward, thereby driving the first slider 4 to slide along the groove processed on the horizontal plate 14. At the same time, the vertical plate 2 on the surface of the horizontal plate 14 swings counterclockwise along the connection point with the raised surface of the bottom plate 1. When the horizontal tube 5 moves to the appropriate position, turn off the power supply of the second motor 302. Then the operator opens the valve on the first discharge port 7 to let the mixed powdered fertilizer enter the horizontal tube 15.

[0037] Pressure sensor 13 is connected to a control unit via a wire, and the control unit is connected to a display unit via a wire. When powdered fertilizer enters the horizontal tube 15, it exerts pressure on the horizontal plate 14, and the display unit on pressure sensor 13 displays the value. The operator reads the value on pressure sensor 13. When the value on pressure sensor 13 reaches the preset value, the valve on the first discharge port 17 is closed to accurately control the amount of powder entering the horizontal tube 15, preventing any unmeasured powder and reducing the probability of substandard products in subsequent production, thereby improving work quality. When the value displayed on the display unit of pressure sensor 13 matches the preset value, the power to the first motor 12 is turned on. The output shaft of the first motor 12 rotates, driving the spiral blade 6 to rotate. The spiral blade 6 drives the powdered fertilizer to the right, thus discharging it through the second discharge port 5.

[0038] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A high-precision powder loss-in-weight scale, comprising a base plate (1) and a box (8), characterized in that: The bottom plate (1) is provided with an auxiliary discharge mechanism (3), the surface of the box body (8) is provided with an auxiliary stirring mechanism (9), the surface of the bottom plate (1) is respectively provided with a feed port (10) and a first discharge port (7), the surface of the discharge port (7) is fixedly connected to the surface of the transverse tube (15), the inner wall of the transverse tube (15) is fixedly connected to a first motor (12) via a bracket, the end of the output shaft of the first motor (12) is fixedly connected to a spiral blade (6), and the spiral blade (6) is rotatably connected to the transverse tube (15) via a bearing.

2. A high-precision powder loss-in-weight scale according to claim 1, characterized in that: The surface of the transverse tube (15) is provided with a second discharge port (5), the box body (8) is fixedly connected to the surface of the transverse plate (14) via a bracket, and a pressure sensor (13) is installed on the surface of the transverse plate (14).

3. A high-precision powder loss-in-weight scale according to claim 1, characterized in that: The auxiliary discharging mechanism (3) comprises a first housing (301), the inner wall of the first housing (301) is fixedly connected to a second motor (302) via a bracket, the end of the output shaft of the second motor (302) is fixedly connected to a threaded rod (303), the threaded rod (303) is connected to a second slider (304) via a threaded connection, a protruding portion of the second slider (304) is slidably connected to a slide groove processed on the inner wall of the first housing (301), the second slider (304) is movably connected to two connecting rods (305) via a pin shaft, the two connecting rods (305) are movably connected to a push rod (306) via a pin shaft, and the push rod (306) passes through the first housing (301) via a through hole.

4. A high-precision powder loss-in-weight scale according to claim 3, characterized in that: The push rod (306) is movably connected to the first slider (4) via a pin, and the surface of the first shell (301) is fixedly connected to the surface of the bottom plate (1).

5. A high-precision powder loss-in-weight scale according to claim 1, characterized in that: The auxiliary stirring mechanism (9) comprises a second housing (901), the surface of the second housing (901) being fixedly connected to the surface of the housing (8), the inner wall of the second housing (901) being fixedly connected to a third motor (902) via a bracket, the end of the output shaft of the third motor (902) being fixedly connected to a disc (903), the surface of the disc (903) being fixedly connected to an incomplete gear (904), the teeth processed on the disc (903) being meshed with the tooth grooves processed on the first gear (905), the first gear (905) being rotationally connected to the second housing (901) via a rotating shaft and a bearing, the first gear (905) being meshed with a second gear (906), the second gear (906) being rotationally connected to a protruding portion of the inner wall of the second housing (901) via a pin, the surface of the second gear (906) being fixedly connected to a rotating rod (907), the rotating rod (907) being rotationally connected to the second housing (901) via a bearing.

6. A high-precision powder loss-in-weight scale according to claim 2, characterized in that: The first sliding block (4) is slidably connected to the sliding groove processed on the horizontal plate (14), and the vertical plate (2) is fixedly connected to the surface of the horizontal plate (14). The vertical plate (2) is movably connected to the raised surface of the bottom plate (1) via a pin shaft.

7. A high-precision powder loss-in-weight scale according to claim 5, characterized in that: The rotating rod (907) is rotatably connected to the housing (8) via a bearing, and a stirring roller (11) is fixedly connected to the end of the rotating rod (907).

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