Weighing device and weighing method for powder materials

Abstract

The invention discloses a weighing device and a weighing method for powder materials, and relates to the technical field of weighing powder materials, including a supporting mechanism, and also including: an isolating and unloading mechanism, which is installed on the supporting mechanism; the invention filters the powder materials by installing the isolating and unloading mechanism, separates the agglomerated powder materials from the dry powder materials, and avoids that the humidity of the agglomerated powder agglomerates is relatively high, and the weight accuracy of the powder materials will be affected when added into a powder material barrel, and the powder agglomerates are filtered out to ensure the quality of the powder materials; the invention shortens the height between the discharge port and the materials by installing a precise unloading mechanism 1, avoids the dust caused by the powder materials falling at a high distance, and avoids the waste of the powder materials, and the short distance can also reduce the amount of the powder materials in the vertical falling process, and ensures the weight accuracy in the powder material barrel; the invention reduces the discharge amount by installing a precise unloading mechanism 2 when the weight is about to reach the standard, so that the weight reaches the standard slowly, and ensures the weight accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of powder material weighing, and in particular to a weighing device and a weighing method for powder materials. Background Art

[0002] Powder material weighing devices are used in the fields of chemical, food and medicine to package and process powder materials in equal amounts. The precision of powder material weighing in the chemical and pharmaceutical fields is relatively high. The deviation of powder materials in the chemical field will affect the quality of the workpiece and cause waste in cost. The deviation of powder materials in the pharmaceutical field will have adverse effects on the human body. Therefore, the precision of powder material weighing is particularly important in the above two fields.

[0003] In the prior art, the discharge port of the powder material is located at a high place. During the loading and weighing process, the powder will fly due to the high distance, resulting in powder waste. Moreover, the feeding is stopped immediately when the weight is reached. However, because the feeding port and the weighing device are at a certain height, the powder still in the air will exceed the weight standard when it falls on the weighing device after reaching the standard, which affects the accuracy of the powder weighing. Summary of the invention

[0004] The present invention provides a weighing device and a weighing method for powder materials to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The weighing device for powder materials includes a supporting mechanism and also includes:

[0007] An isolation and unloading mechanism, which is installed on the supporting mechanism and is used for isolating the powder mass and unloading the powder;

[0008] A rotary weighing mechanism, which is mounted on the supporting mechanism and is used for weighing the powder and switching the powder container;

[0009] Precision blanking mechanism 1, which is connected to the isolation blanking mechanism and is used to adjust the blanking distance;

[0010] Precision unloading mechanism 2, which is connected to the isolation unloading mechanism and is used to adjust the discharge amount;

[0011] A driving mechanism 1, which is connected to the supporting mechanism, the precision material discharging mechanism 1 and the precision material discharging mechanism 2, and is used to drive the precision material discharging mechanism 1 and the precision material discharging mechanism 2 to operate;

[0012] A second driving mechanism, which is connected to the supporting mechanism, the isolating and unloading mechanism and the rotating weighing mechanism, and is used to drive the isolating and unloading mechanism and the rotating weighing mechanism to operate;

[0013] The laser sensor is connected to the precise feeding mechanism and is used to obtain the height of the powder in the powder barrel.

[0014] The supporting mechanism comprises a base, and a supporting frame 1 and a supporting frame 2 are fixed on the top of the base.

[0015] The isolation unloading mechanism comprises a storage barrel fixed on the second support frame, the bottom of the storage barrel is connected to a leakage hopper, the bottom of the leakage hopper is connected to a telescopic tube, a butterfly valve is installed at the bottom end of the telescopic tube, and a pulley 1 is fixed to one end of the control shaft of the butterfly valve;

[0016] A rotating shaft 1 is rotatably connected to the bottom of the storage barrel, a one-way gear 1 is installed on the outside of the bottom end of the rotating shaft 1, a filter bucket is fixed on the top of the rotating shaft 1, the interior of the filter bucket is filled with powder, a plurality of limit blocks are fixed on the outer wall of the filter bucket, a plurality of L-shaped mounting plates are fixed on the outer wall of the storage barrel, a telescopic outer cylinder is fixed on the side of the L-shaped mounting plate facing the storage barrel, a spring is fixed on the inner wall of the telescopic outer cylinder, a striking block is sleeved inside the telescopic outer cylinder, and one side of the striking block is fixedly connected to the spring;

[0017] A plurality of triangular hollow plates are fixed to the bottom outer wall of the filter bucket, and the side edges and bottom edges of the triangular hollow plates are in contact with the inner wall of the storage barrel;

[0018] A dustproof shell is fixed to the outer wall of the bottom end of the telescopic tube, and the belt pulley 1 and the belt sleeve are arranged inside the dustproof shell.

[0019] The rotary weighing mechanism is rotatably connected to a hollow cylinder at the top of a support frame, a one-way gear 2 is installed on the outer wall of the bottom end of the hollow cylinder, a turntable is fixed on the top of the hollow cylinder, a rotating shaft 1 is penetrated and sleeved inside the turntable and the hollow cylinder, a plurality of rotating shafts 2 are rotatably connected to the top of the turntable, a gear 3 is fixed to the outside of the rotating shaft 2, a weighing device is fixed on the top of the rotating shaft 2, and a powder barrel is provided on the weighing device.

[0020] The precise unloading mechanism 1 includes a reciprocating screw rotatably connected to one side of the storage barrel, a one-way gear 3 is installed on the top of the reciprocating screw, a Z-shaped moving plate is provided on the external thread sleeve of the reciprocating screw, the bottom end of the telescopic tube is fixed inside the Z-shaped moving plate, a gear 4 is fixed on the bottom end of the reciprocating screw, and one side of the gear 4 cooperates with a plurality of gears 3;

[0021] The laser sensor is fixed on the bottom of the Z-shaped moving plate.

[0022] The second precise unloading mechanism includes a rotating shaft three rotatably connected to one side of the storage barrel, the rotating shaft three is sleeved inside the Z-shaped movable plate, a one-way gear four is installed on the top of the rotating shaft three, two sliding grooves are provided on the outside of the rotating shaft three, and a slider is sleeved inside the sliding groove, a bevel gear one is fixed to the outside of the two sliders, a bevel gear two is meshed on one side of the bevel gear one, a rotating shaft four is fixed to the inner wall of the bevel gear two, the rotating shaft four is rotatably connected to the Z-shaped movable plate, a pulley two is fixed to one end of the rotating shaft four, the pulley two is connected to the external transmission of the pulley one by a belt, the external rotatable connection of the rotating shaft four is an L-shaped limit plate, the L-shaped limit plate is sleeved on the outside of the rotating shaft three, and the bevel gear one is located at the top of the L-shaped limit plate.

[0023] The driving mechanism 1 includes a motor 1 fixed to one side of the storage barrel, and a gear 1 is fixed to one end of the output shaft of the motor 1, and the gear 1 is meshed with a one-way gear 3 and a one-way gear 4.

[0024] The second driving mechanism comprises a second motor fixed on the top of the base, a second gear is fixed on one end of the output shaft of the second motor, and the second gear is meshed with a first one-way gear and a second one-way gear.

[0025] A controller is fixed on one side of the support frame 2, and the controller is electrically connected to the motor 1, the motor 2, the laser sensor and the weighing device.

[0026] A weighing method for a powder material weighing device, which is applicable to the above-mentioned powder material weighing device, comprises the following steps:

[0027] Step 1: Input the weight of the powder barrel through the controller, and then the controller starts the motor 2 to drive the gear 2 to reverse, and the gear 2 reverses to meet the direction of the one-way gear 2 to drive the hollow cylinder to rotate, and the hollow cylinder drives the turntable to rotate, and the rotation of the turntable drives the structure installed on the top to rotate, so that one of the powder barrels rotates to the bottom of the telescopic tube, and the gear 3 under the powder barrel is meshed with the gear 4;

[0028] Step 2: The controller controls the motor 1 to drive the gear 1 to rotate forward. The forward rotation of the gear 1 satisfies the one-way gear 3 to drive the reciprocating screw to rotate, so that the Z-shaped moving plate pulls the bottom end of the telescopic tube, so that the telescopic tube is stretched and the bottom end is inserted into the inside of the powder barrel, so that the bottom end of the telescopic tube is close to the bottom wall of the powder barrel. When the Z-shaped moving plate moves downward, the bevel gear 1 is pushed downward by the bevel gear 2, and when it moves upward, the bevel gear 1 is supported and moved upward by the L-shaped limit plate;

[0029] Step 3: The controller controls the motor 2 to drive the gear 2 to rotate forward, so that the one-way gear 1 drives the shaft 1 to rotate in the direction of rotation. The shaft 1 drives the filter bucket and multiple limit blocks to rotate. The limit block rotates and contacts the striking block to squeeze the striking block and the spring. The striking block retracts into the inside of the telescopic outer cylinder. When the limit block rotates, the spring pushes the striking block to hit the edge of the filter bucket to vibrate the filter bucket, and the auxiliary powder passes through the filter bucket and falls into the inside of the storage barrel to filter the agglomeration of the powder.

[0030] The powder filtered to the bottom of the filter bucket will be scraped to the inside of the leakage hopper by the triangular hollow plate that rotates with the filter bucket, and then enter the telescopic tube and pass through the butterfly valve to fall on the bottom wall of the powder barrel. Because the distance between the bottom end of the telescopic tube and the bottom wall of the powder barrel is short, the amount of dust raised when the powder falls is small. The laser sensor obtains the height of the powder in the powder barrel, and then controls the motor to drive the gear to rotate forward according to the height controller, so that the reciprocating screw drives the Z-shaped moving plate that moves to the wire tail to move up. The Z-shaped moving plate moves up and pulls the bottom end of the telescopic tube to rise, so that the bottom end of the telescopic tube and the top of the powder are always kept at a short distance. If the distance to the discharge port is too high after the weight of the weighing device reaches the standard, when the weight is reached, the butterfly valve is immediately closed to stop feeding, but the powder still in the air falls into the powder barrel after reaching the standard, which will exceed the weight standard;

[0031] The reciprocating screw drives gear 4 to rotate, the rotation of gear 4 drives gear 3 to rotate, gear 3 drives shaft 2, weigher and powder barrel to rotate. Because the telescopic tube is located on one side of the center of the powder barrel, the powder barrel rotates to spread the powder to avoid the powder piling up in the middle. When too much powder is loaded, the piled powder will exceed the top of the powder barrel.

[0032] Step 4: The weighing device obtains the weight of the powder in the barrel in real time. When the weight is about to reach the standard, the motor 1 is controlled to drive the gear 1 to reverse. The reversal of the gear 1 satisfies the direction of the one-way gear 4 driving the rotating shaft 3 to rotate. The rotation of the rotating shaft 3 drives the bevel gear 1 to rotate through the slide groove and the slider. The rotation of the bevel gear 1 drives the bevel gear 2, the rotating shaft 4 and the pulley 2 to rotate. The rotation of the pulley 2 drives the pulley 1 to rotate through the belt. The pulley 1 drives the control shaft of the butterfly valve to rotate to reduce the discharge amount. When the weight is about to reach the standard, the discharge amount is reduced to slowly reach the standard.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The present invention filters the powder by installing an isolation feeding mechanism to separate the agglomerated powder from the dry powder, so as to avoid the agglomerated powder having high humidity, which will affect the weight accuracy of the powder when added into the powder barrel, and the powder agglomerates are filtered out to ensure the quality of the powder;

[0035] 2. The present invention shortens the height between the discharge port and the material by installing a precise feeding mechanism, thereby avoiding the dust caused by the powder falling at a high distance and avoiding the waste of powder. The short distance can also reduce the amount of powder in the vertical falling process, thereby ensuring the accuracy of the weight in the powder barrel.

[0036] 3. The present invention installs a second precise material discharge mechanism to reduce the discharge amount when the weight is about to reach the standard so that the weight can reach the standard slowly, thereby ensuring the accuracy of the weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the three-dimensional structure of the weighing device for powder materials proposed by the present invention.

[0038] Figure 2 This is a front view structural schematic diagram of the powder material weighing device proposed by the present invention.

[0039] Figure 3 This is a schematic cross-sectional structure diagram of the powder material weighing device proposed in the present invention.

[0040] Figure 4 This is a structural schematic diagram of the second precise feeding mechanism of the powder material weighing device proposed in the present invention.

[0041] Figure 5 This is a schematic diagram of the second structure of the driving mechanism of the powder material weighing device proposed by the present invention.

[0042] Figure 6 This is a schematic diagram of the funnel hopper structure of the powder material weighing device proposed in the present invention.

[0043] Figure 7 This is a schematic diagram of the explosion structure of the telescopic outer cylinder, spring and striking block of the powder material weighing device proposed by the present invention.

[0044] Figure 8 for Figure 3 Enlarged structural diagram at point A.

[0045] In the figure: 1. Support mechanism; 11. Base; 12. Support frame 1; 13. Support frame 2; 2. Isolation and unloading mechanism; 21. Storage barrel; 22. Rotating shaft 1; 23. Filter bucket; 24. Limit block; 25. One-way gear 1; 26. L-shaped mounting plate; 27. Telescopic outer cylinder; 28. Spring; 29. ​​Beating block; 210. Triangular hollow plate; 211. Leakage hopper; 212. Telescopic tube; 213. Butterfly valve; 214. Pulley 1; 3. Rotary weighing mechanism; 31. Hollow cylinder; 32. One-way gear 2; 33. Powder barrel; 34. Turntable; 35. Rotating shaft 2 ;36. Gear three;37. Weighing machine;4. Precision feeding mechanism one;41. Reciprocating screw;42. Z-type moving plate;43. Gear four;44. One-way gear three;5. Precision feeding mechanism two;51. Rotating shaft three;52. One-way gear four;53. Slide;54. Slider;55. Bevel gear one;56. Rotating shaft four;57. Bevel gear two;58. Pulley two;59. Belt;510. L-type limit plate;6. Driving mechanism one;61. Motor one;62. Gear one;7. Driving mechanism two;71. Motor two;72. Gear two;8. Laser sensor. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0049] Example: Refer to Figure 1-Figure 8 : A weighing device for powder materials, comprising a supporting mechanism 1, and further comprising:

[0050] An isolating and unloading mechanism 2, which is installed on the supporting mechanism 1 and is used for isolating the powder mass and unloading the powder;

[0051] A rotary weighing mechanism 3, which is mounted on the supporting mechanism 1 and is used for weighing the powder and switching the powder container;

[0052] A precise material discharging mechanism 4, which is connected to the isolation material discharging mechanism 2 and is used to adjust the material discharging distance;

[0053] A second precise material discharging mechanism 5, which is connected to the isolation material discharging mechanism 2 and is used to adjust the material discharging amount;

[0054] A driving mechanism 1 6, which is connected to the supporting mechanism 1, the precision material discharging mechanism 1 4 and the precision material discharging mechanism 2 5, and is used to drive the precision material discharging mechanism 1 4 and the precision material discharging mechanism 2 5 to operate;

[0055] A second driving mechanism 7, which is connected to the supporting mechanism 1, the isolating and unloading mechanism 2 and the rotating weighing mechanism 3, and is used to drive the isolating and unloading mechanism 2 and the rotating weighing mechanism 3 to operate;

[0056] The laser sensor 8 is connected to the precise feeding mechanism 4 and is used to obtain the height of the powder in the powder barrel.

[0057] The supporting mechanism 1 comprises a base 11 , and a supporting frame 12 and a supporting frame 2 13 are fixed on the top of the base 11 .

[0058] The isolation unloading mechanism 2 includes a storage barrel 21 fixed on the support frame 13, the bottom of the storage barrel 21 is connected to a hopper 211, the bottom of the hopper 211 is connected to a telescopic tube 212, a butterfly valve 213 is installed at the bottom end of the telescopic tube 212, and a pulley 214 is fixed to one end of the control shaft of the butterfly valve 213;

[0059] A rotating shaft 22 is rotatably connected to the bottom of the storage barrel 21, a one-way gear 25 is installed on the outside of the bottom end of the rotating shaft 22, a filter bucket 23 is fixed on the top of the rotating shaft 22, the inside of the filter bucket 23 is filled with powder, a plurality of limit blocks 24 are fixed on the outer wall of the filter bucket 23, a plurality of L-shaped mounting plates 26 are fixed on the outer wall of the storage barrel 21, a telescopic outer cylinder 27 is fixed on the side of the L-shaped mounting plate 26 facing the storage barrel 21, a spring 28 is fixed on the inner wall of the telescopic outer cylinder 27, a striking block 29 is sleeved inside the telescopic outer cylinder 27, and one side of the striking block 29 is fixedly connected to the spring 28;

[0060] A plurality of triangular hollow plates 210 are fixed to the bottom outer wall of the filter bucket 23, and the side edges and bottom edges of the triangular hollow plates 210 are in contact with the inner wall of the storage barrel 21;

[0061] A dustproof shell 215 is fixed to the outer wall of the bottom end of the telescopic tube 212, and the pulley 214 and the belt 59 are sleeved inside the dustproof shell 215.

[0062] The rotary weighing mechanism 3 is rotatably connected to the hollow cylinder 31 on the top of the support frame 12, and a one-way gear 2 32 is installed on the outer wall of the bottom end of the hollow cylinder 31. A turntable 34 is fixed on the top of the hollow cylinder 31. The rotating shaft 1 22 is inserted through the inside of the turntable 34 and the hollow cylinder 31. A plurality of rotating shafts 2 35 are rotatably connected to the top of the turntable 34, and a gear 3 36 is fixed to the outside of the rotating shaft 2 35. A weighing device 37 is fixed to the top of the rotating shaft 2 35. A powder barrel 33 is provided on the weighing device 37. The bottom end of the telescopic tube 212 is located at the top of the powder barrel 33, but not at the center.

[0063] The precise unloading mechanism 14 comprises a reciprocating screw 41 rotatably connected to one side of the storage barrel 21, a one-way gear 3 44 is installed on the top of the reciprocating screw 41, a Z-shaped moving plate 42 is sleeved on the external thread of the reciprocating screw 41, the bottom end of the telescopic tube 212 is fixed inside the Z-shaped moving plate 42, a gear 43 is fixed on the bottom end of the reciprocating screw 41, and one side of the gear 43 cooperates with a plurality of gears 3 36;

[0064] The laser sensor 8 is fixed on the bottom of the Z-shaped moving plate 42 .

[0065] The precise unloading mechanism 2 5 includes a rotating shaft 3 51 rotatably connected to one side of the storage barrel 21, the rotating shaft 3 51 is sleeved inside the Z-shaped movable plate 42, a one-way gear 4 52 is installed on the top of the rotating shaft 3 51, two slide grooves 53 are provided on the outside of the rotating shaft 3 51, a slider 54 is sleeved inside the slide groove 53, a bevel gear 1 55 is fixed to the outside of the two sliders 54, a bevel gear 2 57 is meshed with one side of the bevel gear 1 55, a rotating shaft 4 56 is fixed to the inner wall of the bevel gear 2 57, the rotating shaft 4 56 is rotatably connected to the Z-shaped movable plate 42, a pulley 2 58 is fixed to one end of the rotating shaft 4 56, the pulley 2 58 is connected to the external transmission of the pulley 1 214 by a belt 59, the external rotatable connection of the rotating shaft 4 56 is connected to an L-shaped limit plate 510, the L-shaped limit plate 510 is sleeved on the outside of the rotating shaft 3 51, and the bevel gear 1 55 is located on the top of the L-shaped limit plate 510.

[0066] The driving mechanism 16 includes a motor 161 fixed to one side of the storage barrel 21, and a gear 162 is fixed to one end of the output shaft of the motor 161, and the gear 162 is meshed with the one-way gear 344 and the one-way gear 452.

[0067] The driving mechanism 2 7 includes a motor 2 71 fixed on the top of the base 11 , and a gear 2 72 is fixed to one end of the output shaft of the motor 2 71 , and the gear 2 72 is meshed with the one-way gear 1 25 and the one-way gear 2 32 .

[0068] A controller is fixed on one side of the support frame 13 , and the controller is electrically connected to the motor 1 61 , the motor 2 71 , the laser sensor 8 and the weighing device 37 .

[0069] A weighing method for a powder material weighing device, which is applicable to the above-mentioned powder material weighing device, comprises the following steps:

[0070] Step 1: input the weight of the powder barrel 33 through the controller, and then the controller starts the motor 2 71 to drive the gear 2 72 to reverse, and the gear 2 72 reverses to meet the direction of the one-way gear 2 32 to drive the hollow cylinder 31 to rotate, and the hollow cylinder 31 drives the turntable 34 to rotate, and the rotation of the turntable 34 drives the structure installed on the top to rotate, so that one of the powder barrels 33 rotates to the bottom of the telescopic tube 212, and the gear 3 36 under the powder barrel 33 is meshed with the gear 4 43;

[0071] Step 2: The controller controls the motor 1 61 to drive the gear 1 62 to rotate forward. The forward rotation of the gear 1 62 satisfies the one-way gear 3 44 to drive the reciprocating screw 41 to rotate, so that the Z-shaped movable plate 42 pulls the bottom end of the telescopic tube 212, so that the telescopic tube 212 is stretched and the bottom end is inserted into the powder barrel 33, so that the bottom end of the telescopic tube 212 is close to the bottom wall of the powder barrel 33. When the Z-shaped movable plate 42 moves downward, the bevel gear 1 55 will be pushed downward by the bevel gear 2 57, and when it moves upward, the bevel gear 1 55 will be supported and moved upward by the L-shaped limit plate 510;

[0072] Step 3: The controller controls the motor 2 71 to drive the gear 2 72 to rotate forward, so that the one-way gear 1 25 drives the shaft 1 22 to rotate. The shaft 1 22 drives the filter bucket 23 and multiple limit blocks 24 to rotate. The limit block 24 rotates and contacts the striking block 29 to squeeze the striking block 29 and the spring 28. The striking block 29 retracts into the interior of the telescopic outer cylinder 27. When the limit block 24 rotates, the spring 28 pushes the striking block 29 to hit the edge of the filter bucket 23 to vibrate the filter bucket 23, and the auxiliary powder passes through the filter bucket 23 and falls into the interior of the storage barrel 21, so as to filter the agglomeration of the powder. The agglomerated powder has a high humidity. Adding it into the powder barrel will affect the weight accuracy of the powder, and filtering out the powder agglomerates can ensure the quality of the powder.

[0073] The powder filtered to the bottom of the filter hopper 23 will be scraped to the inside of the hopper 211 by the triangular hollow plate 210 rotating with the filter hopper 23, and then enter the telescopic tube 212 and pass through the butterfly valve 213 to fall on the bottom wall of the powder barrel 33. Because the distance between the bottom end of the telescopic tube 212 and the bottom wall of the powder barrel 33 is short, the amount of dust raised when the powder falls is small, avoiding the waste of dust. The laser sensor 8 obtains the height of the powder in the powder barrel 33, and then controls the motor 61 to drive the gear 62 to rotate forward according to the height controller, so that the reciprocating screw 41 drives the gear 62 to rotate forward. The Z-shaped movable plate 42 moved to the tail of the wire moves upward, and the Z-shaped movable plate 42 moves upward to pull the bottom end of the telescopic tube 212 upward, so that the bottom end of the telescopic tube 212 is always kept at a short distance from the top of the powder. The short distance can avoid the error of weighing. If the distance of the discharge port is too high after the weight of the weighing device 37 reaches the standard, when the weight reaches the standard, the butterfly valve 213 is immediately closed to stop the feeding. However, the powder still in the air will fall into the powder barrel 33 after reaching the standard, which will exceed the weight standard. Therefore, the short distance can reduce the amount of powder in the air and ensure the accuracy of the weight in the powder barrel 33.

[0074] The reciprocating screw 41 drives the gear 43 to rotate, the rotation of the gear 43 drives the gear 36 to rotate, the gear 36 drives the rotating shaft 2 35, the weighing device 37 and the powder barrel 33 to rotate, the slow rotation of the weighing device 37 does not affect the weighing accuracy, because the telescopic tube 212 is located on one side of the center of the powder barrel 33, so the powder barrel 33 rotates to spread the powder, avoiding the powder from piling up in the middle. When too much powder is loaded, the piled powder will exceed the top of the powder barrel 33;

[0075] Step 4: The weighing device 37 obtains the weight of the powder in the barrel in real time. When the weight is about to reach the standard, the motor 1 61 is controlled to drive the gear 1 62 to reverse. The reversal of the gear 1 62 satisfies the direction of the one-way gear 4 52 driving the rotating shaft 3 51 to rotate. The rotating shaft 3 51 rotates through the slide 53 and the slider 54 to drive the bevel gear 1 55 to rotate. The rotation of the bevel gear 1 55 drives the bevel gear 2 57, the rotating shaft 4 56 and the pulley 2 58 to rotate. The rotation of the pulley 2 58 drives the pulley 1 214 to rotate through the belt 59. The pulley 1 214 drives the control shaft of the butterfly valve 213 to rotate to reduce the discharge amount. When the weight is about to reach the standard, the discharge amount is reduced to make the weight reach the standard slowly, thereby ensuring the accuracy of the weight.

[0076] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A weighing device for powder materials, comprising a supporting mechanism (1), characterized in that: Also includes: An isolation and unloading mechanism (2), which is mounted on the supporting mechanism (1) and is used for isolating powder agglomerates and unloading powder; A rotary weighing mechanism (3) mounted on the supporting mechanism (1) and used for weighing powder and switching powder containers; A precision blanking mechanism 1 (4), which is connected to the isolation blanking mechanism (2) and is used to adjust the blanking distance; A second precise material discharging mechanism (5), which is connected to the isolation material discharging mechanism (2) and is used to adjust the material discharging amount; A driving mechanism 1 (6), which is connected to the supporting mechanism (1), the precision material discharging mechanism 1 (4) and the precision material discharging mechanism 2 (5), and is used to drive the precision material discharging mechanism 1 (4) and the precision material discharging mechanism 2 (5) to operate; A second driving mechanism (7), which is connected to the supporting mechanism (1), the isolating and unloading mechanism (2) and the rotary weighing mechanism (3), and is used to drive the isolating and unloading mechanism (2) and the rotary weighing mechanism (3) to operate; A laser sensor (8) is connected to the first precise feeding mechanism (4) and is used to obtain the height of the powder in the powder barrel.

2. The weighing device for powder materials according to claim 1, characterized in that: The support mechanism (1) comprises a base (11), and a support frame 1 (12) and a support frame 2 (13) are fixed on the top of the base (11).

3. The weighing device for powder materials according to claim 2, characterized in that: The isolation unloading mechanism (2) comprises a storage barrel (21) fixed on a second support frame (13); the bottom of the storage barrel (21) is connected to a hopper (211); the bottom of the hopper (211) is connected to a telescopic tube (212); a butterfly valve (213) is installed at the bottom end of the telescopic tube (212); a pulley (214) is fixed to one end of a control shaft of the butterfly valve (213); A rotating shaft (22) is rotatably connected to the bottom of the storage barrel (21), a one-way gear (25) is installed on the outside of the bottom end of the rotating shaft (22), a filter bucket (23) is fixed on the top end of the rotating shaft (22), the interior of the filter bucket (23) is filled with powder, a plurality of limit blocks (24) are fixed on the outer wall of the filter bucket (23), a plurality of L-shaped mounting plates (26) are fixed on the outer wall of the storage barrel (21), a telescopic outer cylinder (27) is fixed on the side of the L-shaped mounting plate (26) facing the storage barrel (21), a spring (28) is fixed on the inner wall of the telescopic outer cylinder (27), a striking block (29) is sleeved on the interior of the telescopic outer cylinder (27), and one side of the striking block (29) is fixedly connected to the spring (28); A plurality of triangular hollow plates (210) are fixed to the bottom outer wall of the filter bucket (23), and the side edges and bottom edges of the triangular hollow plates (210) are in contact with the inner wall of the storage barrel (21); A dustproof shell (215) is fixed to the outer wall of the bottom end of the telescopic tube (212), and the pulley 1 (214) and the belt (59) are sleeved inside the dustproof shell (215).

4. The weighing device for powder materials according to claim 3, characterized in that: The rotary weighing mechanism (3) is rotatably connected to a hollow cylinder (31) at the top of the support frame (12); a one-way gear (32) is installed on the outer wall of the bottom end of the hollow cylinder (31); a turntable (34) is fixed on the top of the hollow cylinder (31); the rotating shaft (22) is inserted through the inside of the turntable (34) and the hollow cylinder (31); a plurality of rotating shafts (35) are rotatably connected to the top of the turntable (34); a gear (36) is fixed to the outside of the rotating shaft (35); a weighing device (37) is fixed on the top of the rotating shaft (35); and a powder barrel (33) is provided on the weighing device (37).

5. The weighing device for powder materials according to claim 4, characterized in that: The precise unloading mechanism (4) comprises a reciprocating screw (41) rotatably connected to one side of the storage barrel (21), a one-way gear (44) is installed at the top of the reciprocating screw (41), a Z-shaped moving plate (42) is provided on the external thread sleeve of the reciprocating screw (41), the bottom end of the telescopic tube (212) is fixed inside the Z-shaped moving plate (42), a gear (43) is fixed at the bottom end of the reciprocating screw (41), and one side of the gear (43) is matched with a plurality of gears (36); The laser sensor (8) is fixed on the bottom of the Z-shaped moving plate (42).

6. The weighing device for powder materials according to claim 5, characterized in that: The second precise unloading mechanism (5) comprises a rotating shaft (51) rotatably connected to one side of the storage barrel (21), the rotating shaft (51) being sleeved inside the Z-shaped movable plate (42), a one-way gear (52) being installed on the top of the rotating shaft (51), two sliding grooves (53) being provided on the outside of the rotating shaft (51), a sliding block (54) being sleeved inside the sliding groove (53), a bevel gear (55) being fixed on the outside of the two sliding blocks (54), a bevel gear (55) being meshed with a bevel gear (57) on one side of the bevel gear (55), and the bevel gear (55) being meshed with a bevel gear (57) on one side of the bevel gear (55). A rotating shaft 4 (56) is fixed to the inner wall of the bevel gear 2 (57), and the rotating shaft 4 (56) is rotatably connected to the Z-shaped movable plate (42). A pulley 2 (58) is fixed to one end of the rotating shaft 4 (56), and a belt (59) is connected to the external transmission of the pulley 2 (58) and the pulley 1 (214). The external part of the rotating shaft 4 (56) is rotatably connected to an L-shaped limit plate (510), and the L-shaped limit plate (510) is sleeved on the outside of the rotating shaft 3 (51), and the bevel gear 1 (55) is located on the top of the L-shaped limit plate (510).

7. The weighing device for powder materials according to claim 6, characterized in that: The driving mechanism one (6) comprises a motor one (61) fixed to one side of the storage barrel (21), a gear one (62) being fixed to one end of the output shaft of the motor one (61), and the gear one (62) being meshed with a one-way gear three (44) and a one-way gear four (52).

8. The weighing device for powder materials according to claim 7, characterized in that: The second driving mechanism (7) comprises a second motor (71) fixed on the top of the base (11), a second gear (72) being fixed at one end of the output shaft of the second motor (71), and the second gear (72) being meshed with the first one-way gear (25) and the second one-way gear (32).

9. The weighing device for powder materials according to claim 8, characterized in that: A controller is fixed on one side of the second support frame (13), and the controller is electrically connected to the first motor (61), the second motor (71), the laser sensor (8) and the weighing device (37).

10. A weighing method for a powder material weighing device, which is applicable to the powder material weighing device according to claim 9, characterized in that: The following steps are involved: Step 1: inputting the weight of the powder barrel (33) through the controller, and then the controller starts the motor 2 (71) to drive the gear 2 (72) to reverse, the gear 2 (72) reverses to meet the direction of the one-way gear 2 (32) driving the hollow cylinder (31) to rotate, the hollow cylinder (31) drives the turntable (34) to rotate, the rotation of the turntable (34) drives the structure installed above to rotate, so that one of the powder barrels (33) rotates to the bottom of the telescopic tube (212), and the gear 3 (36) below the powder barrel (33) is meshed with the gear 4 (43); Step 2: The controller controls the motor 1 (61) to drive the gear 1 (62) to rotate forward. The forward rotation of the gear 1 (62) satisfies the one-way gear 3 (44) to drive the reciprocating screw (41) to rotate, so that the Z-shaped movable plate (42) pulls the bottom end of the telescopic tube (212), so that the telescopic tube (212) is stretched and the bottom end is inserted into the powder barrel (33), so that the bottom end of the telescopic tube (212) is close to the bottom wall of the powder barrel (33). When the Z-shaped movable plate (42) moves downward, the bevel gear 1 (55) is pushed downward by the bevel gear 2 (57), and when it moves upward, the bevel gear 1 (55) is supported and moved upward by the L-shaped limit plate (510); Step 3: The controller controls the second motor (71) to drive the second gear (72) to rotate forward, so that the one-way gear (25) drives the rotating shaft (22) to rotate. The rotating shaft (22) drives the filter bucket (23) and the plurality of limit blocks (24) to rotate. The limit blocks (24) rotate and contact with the striking blocks (29) to squeeze the striking blocks (29) and the spring (28). The striking blocks (29) are retracted into the interior of the telescopic outer cylinder (27). When the limit blocks (24) rotate, the spring (28) pushes the striking blocks (29) to strike the edge of the filter bucket (23) to vibrate the filter bucket (23), thereby assisting the powder to pass through the filter bucket (23) and fall into the interior of the storage barrel (21), thereby filtering the agglomerates of the powder. The powder filtered to the bottom of the filter hopper (23) is scraped to the inside of the hopper (211) by the triangular hollow plate (210) rotating with the filter hopper (23), and then enters the telescopic tube (212) and passes through the butterfly valve (213) to fall on the bottom wall of the powder barrel (33). Because the distance between the bottom end of the telescopic tube (212) and the bottom wall of the powder barrel (33) is short, the amount of dust raised when the powder falls is small. The laser sensor (8) obtains the height of the powder in the powder barrel (33), and then controls the motor (6) according to the height controller. 1) driving the gear 1 (62) to rotate forward, so that the reciprocating screw (41) drives the Z-shaped movable plate (42) moved to the tail of the wire to move upward, and the Z-shaped movable plate (42) moves upward to pull the bottom end of the telescopic tube (212) upward, so that the bottom end of the telescopic tube (212) and the top of the powder material always maintain a short distance. After the weight of the weighing device (37) reaches the standard, if the distance from the discharge port is too high, when the weight reaches the standard, the butterfly valve (213) is immediately closed to stop feeding, but the powder material still in the air falls into the powder material barrel (33) after reaching the standard, which will exceed the weight standard; The reciprocating screw (41) drives the gear 4 (43) to rotate, the gear 4 (43) drives the gear 3 (36) to rotate, the gear 3 (36) drives the rotating shaft 2 (35), the weighing device (37) and the powder barrel (33) to rotate. Because the telescopic tube (212) is located on one side of the center of the powder barrel (33), the powder barrel (33) rotates to spread the powder, thereby preventing the powder from piling up in the middle. When too much powder is loaded, the piled powder will exceed the top of the powder barrel (33); Step 4: The weighing device (37) obtains the weight of the powder in the barrel in real time. When the weight is about to reach the standard, the motor 1 (61) is controlled to drive the gear 1 (62) to reverse. The reverse rotation of the gear 1 (62) satisfies the direction of the rotation of the one-way gear 4 (52) to drive the rotating shaft 3 (51). The rotating shaft 3 (51) rotates through the chute (53) and the slider (54) to drive the bevel gear 1 (55) to rotate. The rotation of the bevel gear 1 (55) drives the bevel gear 2 (57), the rotating shaft 4 (56) and the pulley 2 (58) to rotate. The rotation of the pulley 2 (58) drives the pulley 1 (214) to rotate through the belt (59). The pulley 1 (214) drives the control shaft of the butterfly valve (213) to rotate to reduce the discharge amount. When the weight is about to reach the standard, the discharge amount is reduced so that the weight slowly reaches the standard.

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