Powder weighing instrument

Abstract

The utility model discloses a powder weighing instrument, which belongs to the technical field of powder weighing instruments and comprises a base, and a hopper is fixedly mounted at the top of the base. By means of the mode, the driving assembly is started to drive the quantitative cylinder to conduct semi-circumferential reciprocating rotation, before rotation, an opening of the material conveying groove faces downwards, after rotation, the opening of the material conveying groove faces upwards, at the moment, the material conveying groove is filled with powder in the hopper, after filling is full, the driving assembly drives the quantitative cylinder to conduct semi-circumferential rotation, and at the moment, the opening of the material conveying groove faces downwards; the powder falls into the collecting device under the action of gravity, quantitative feeding is achieved, meanwhile, the powder can fall only when the material conveying groove is in the state that the opening faces downwards, and therefore the falling amount can be accurately controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of powder weighing instruments, in particular to a powder weighing instrument. Background Art

[0002] Powder weighing instrument is a device used for quantitative material taking, which can accurately take materials through weight detection.

[0003] Chinese patent CN210774296U discloses a powder weighing scale, including a weighing cavity and a weight sensor. A feed port and a discharge port are respectively arranged on both sides of the weighing cavity. A buffer for adjusting the size of the feed port is arranged on the weighing cavity. The buffer includes an elastic buffer plate, a rotating rod vertically connected to the buffer plate, and a driving member. The buffer plate is located in the weighing cavity and is provided with a plurality of leakage holes connected to the discharge port. The axis of the rotating rod is spaced a certain distance from the center of the buffer plate.

[0004] However, the existing device still has the following problems: in the process of quantitative feeding, the existing device uses a screw to feed the material. During feeding, due to the uninterrupted feeding of the thread, the screw stops feeding when a certain weight is reached, but residual material will still fall at the discharge port, resulting in inaccurate weighing.

[0005] Based on this, the utility model designs a powder weighing instrument to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a powder weighing instrument.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A powder weighing instrument comprises a base, a hopper is fixedly mounted on the top of the base, mounting mechanisms are fixedly mounted on the left and right sides of the hopper, a plurality of mounting mechanisms are provided, a quantitative cylinder is rotatably mounted on the hopper through the mounting mechanisms, a material transport trough for storing and feeding materials is provided on the quantitative cylinder, and the quantitative cylinder is rotatably connected to the bottom of the hopper;

[0009] The quantitative cylinder is provided with a variable component for changing the volume of the quantitative cylinder, the variable component includes a grooved sheet, a trapezoidal screw for moving the grooved sheet and a baffle, the grooved sheet is slidably connected to the material conveying trough, the left end of the trapezoidal screw is rotatably connected to the right end of the grooved sheet, the left end of the baffle is fixedly connected to the right end of the grooved sheet, and the baffle penetrates and slidably connects to the right side of the quantitative cylinder;

[0010] A driving assembly for driving the metering cylinder to reciprocate in a semicircle is fixedly installed on the left side of the top of the base.

[0011] Furthermore, the material transport trough is configured as a trapezoidal trough.

[0012] Furthermore, the groove-shaped piece is arranged to be trapezoidal, and the groove-shaped piece fits with the material conveying trough and is connected with limiting sliding.

[0013] Furthermore, the installation mechanism includes an upper semicircular plate, a lower semicircular plate and a shrinking assembly, the upper semicircular plate is fixedly installed on the outer wall of the hopper, and the upper semicircular plate is connected to the lower semicircular plate through the shrinking assembly.

[0014] Furthermore, the retraction assembly includes a limit rod and a spring, the bottom end of the limit rod is fixedly connected to the top rear side of the lower semicircular plate, the top end of the limit rod passes through the upper semicircular plate and is limitedly and slidably connected to the upper semicircular plate, and a spring is fixedly connected between the bottom surface of the upper semicircular plate and the top of the lower semicircular plate.

[0015] Furthermore, a limiting ring is provided on the metering cylinder, and the limiting ring is connected to the outer edges of the circular grooves of the upper semicircular plate and the lower semicircular plate in a limiting rotation manner.

[0016] Furthermore, the driving assembly includes a rotating cylinder and a connecting shaft. The rotating cylinder is fixedly installed on the top left side of the base. The output end of the rotating cylinder is fixedly connected to the connecting shaft. The right end of the connecting shaft is provided with a connecting assembly for fixedly connecting the metering cylinder.

[0017] Furthermore, the connecting assembly includes a connecting piece and a bolt, the connecting piece is fixedly connected to the right end of the connecting shaft, and the connecting piece is fixedly connected to the left end of the metering cylinder through the bolt.

[0018] The utility model has the following technical effects:

[0019] 1. The utility model starts the driving component to drive the metering cylinder to perform a semicircular reciprocating rotation. Before the rotation, the opening of the material transport trough faces downward, and after the rotation, the opening of the material transport trough faces upward. At this time, the powder inside the hopper is filled into the material transport trough. After it is filled, the driving component drives the metering cylinder to perform a semicircular rotation. At this time, the opening of the material transport trough faces downward, and the powder falls into the collecting device under the action of gravity and realizes quantitative delivery. At the same time, the material will only fall when the material transport trough is in a downward opening state, so that the amount of falling material can be accurately controlled.

[0020] 2. The utility model drives the grooved sheet to move in the material transport trough by rotating the trapezoidal screw, and the blocking sheet moves with the grooved sheet, so that the grooved sheet blocks part of the outer edge of the material transport trough, thereby changing the capacity of the material transport trough, so that the device can adapt to the weighing of different capacities without the need to use weight detection tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A three-dimensional powder weighing instrument of the utility model Figure 1 ;

[0023] Figure 2 It is a front view of a powder weighing instrument of the utility model;

[0024] Figure 3 A three-dimensional powder weighing instrument of the utility model Figure 2 ;

[0025] Figure 4 This is a partial structural diagram of the installation mechanism of a powder weighing instrument of the utility model;

[0026] Figure 5 Connect the drive assembly to the metering cylinder Figure 1 ;

[0027] Figure 6 Connect the drive assembly to the metering cylinder Figure 2 ;

[0028] Figure 7 Connect the drive assembly to the metering cylinder Figure 3 .

[0029] The numbers in the figure represent:

[0030] 1. Base; 2. Hopper; 3. Mounting mechanism; 31. Upper semicircular plate; 32. Lower semicircular plate; 33. Contraction assembly; 331. Limit rod; 332. Spring; 4. Measuring cylinder; 41. Material transport trough; 5. Variable assembly; 51. Grooved sheet; 52. Trapezoidal screw; 53. Baffle; 6. Driving assembly; 61. Rotating cylinder; 62. Connecting shaft; 7. Connecting assembly; 71. Connecting sheet; 72. Bolt. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The utility model is further described below in conjunction with embodiments.

[0033] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0034] Example 1

[0035] Please refer to the instruction manual Figure 1-7 , a powder weighing instrument, comprising a base 1;

[0036] A hopper 2 is fixedly mounted on the top of the base 1, and mounting mechanisms 3 are fixedly mounted on the left and right sides of the hopper 2. A plurality of mounting mechanisms 3 are provided. A quantitative cylinder 4 is rotatably mounted on the hopper 2 through the mounting mechanisms 3. A material transport trough 41 for storing and feeding materials is provided on the quantitative cylinder 4. The quantitative cylinder 4 is rotatably connected to the bottom of the hopper 2.

[0037] The quantitative cylinder 4 is provided with a variable component 5 for changing the volume of the quantitative cylinder 4. The variable component 5 includes a grooved sheet 51, a trapezoidal screw 52 and a baffle 53 for moving the grooved sheet 51. The grooved sheet 51 is slidably connected to the material transport trough 41, the left end of the trapezoidal screw 52 is rotatably connected to the right end of the grooved sheet 51, the left end of the baffle 53 is fixedly connected to the right end of the grooved sheet 51, and the baffle 53 penetrates and slidably connects to the right side of the quantitative cylinder 4.

[0038] A driving assembly 6 for driving the metering cylinder 4 to reciprocate in a semicircle is fixedly mounted on the left side of the top of the base 1 .

[0039] When the utility model is in use, the outlet of the hopper 2 is covered by the metering cylinder 4, and a powder collecting device can be placed on the base 1. By pouring the powder into the hopper 2, the material transport trough 41 opens downward at this time, and the powder is retained in the hopper 2. The driving component 6 is started to drive the metering cylinder 4 to perform a semicircular reciprocating rotation. Before the rotation, the material transport trough 41 opens downward, and after the rotation, the material transport trough 41 opens upward. At this time, the powder inside the hopper 2 is filled into the material transport trough 41. During the filling process, since the powder inside the hopper 2 is not subjected to additional pressure, each time the powder is filled in, The filling density is almost the same. When filling powder, since the powder has a certain degree of adhesion, a thin layer of powder will adhere to the inner wall of the material transport trough 41 after contacting the inner wall of the material transport trough 41. When calculating the mass, this difference can be subtracted to obtain accurate mass weighing data. After filling, the driving component 6 drives the metering cylinder 4 to rotate semicircularly. At this time, the opening of the material transport trough 41 faces downward, and the powder falls into the collecting device under the action of gravity and realizes quantitative delivery. At the same time, the material will fall only when the material transport trough 41 is in a downward opening state, so that the amount of falling material can be accurately controlled.

[0040] When utensils of different capacities are feeding, the grooved sheet 51 is driven to move in the material transport trough 41 by rotating the trapezoidal screw 52, ​​and the blocking sheet 53 moves with the grooved sheet 51, so that the grooved sheet 51 blocks part of the outer edge of the material transport trough 41, thereby changing the capacity of the material transport trough 41, so that the device can adapt to the weighing of different capacities, without the need to use weight detection tools, and only needs to calculate the number of feedings.

[0041] The material transport trough 41 is configured as a trapezoidal trough, and the opening size is larger than the size of the internal material transport trough 41, so that the powder can fall stably without staying inside the material transport trough 41;

[0042] The groove piece 51 is set to be trapezoidal, and the groove piece 51 is fitted with the material conveying trough 41 and is limitedly slidably connected;

[0043] The mounting mechanism 3 comprises an upper semicircular plate 31, a lower semicircular plate 32 and a contraction assembly 33. The upper semicircular plate 31 is fixedly mounted on the outer wall of the hopper 2, and the upper semicircular plate 31 is connected to the lower semicircular plate 32 via the contraction assembly 33.

[0044] The contraction assembly 33 includes a limiting rod 331 and a spring 332. The bottom end of the limiting rod 331 is fixedly connected to the top rear side of the lower semicircular plate 32. The top end of the limiting rod 331 passes through the upper semicircular plate 31 and is limitedly slidably connected to the upper semicircular plate 31. The spring 332 is fixedly connected between the bottom surface of the upper semicircular plate 31 and the top of the lower semicircular plate 32.

[0045] When installing the metering cylinder 4, simply pull the lower semicircular plate 32 downward to create a gap between the upper semicircular plate 31 and the lower semicircular plate 32, put the metering cylinder 4 into the gap, and loosen the lower semicircular plate 32 to complete the installation of the metering cylinder 4. At this time, the metering cylinder 4 is rotatably connected to the circular groove surrounded by the upper semicircular plate 31 and the lower semicircular plate 32.

[0046] The metering cylinder 4 is provided with a limiting ring, which is connected to the outer edges of the circular grooves of the upper semicircular plate 31 and the lower semicircular plate 32 for limiting rotation;

[0047] The limiting ring can prevent the metering cylinder 4 from deflecting during the rotation process;

[0048] The driving assembly 6 includes a rotating cylinder 61 and a connecting shaft 62. The rotating cylinder 61 is fixedly installed on the top left side of the base 1. The output end of the rotating cylinder 61 is fixedly connected to the connecting shaft 62. The right end of the connecting shaft 62 is provided with a connecting assembly 7 for fixedly connecting the metering cylinder 4.

[0049] The connecting assembly 7 includes a connecting piece 71 and a bolt 72. The connecting piece 71 is fixedly connected to the right end of the connecting shaft 62. The connecting piece 71 is fixedly connected to the left end of the metering cylinder 4 through the bolt 72.

[0050] The rotating cylinder 61 is configured to be able to rotate one hundred and eighty degrees. The rotation of the rotating cylinder 61 drives the connecting shaft 62 to rotate, the rotation of the connecting shaft 62 drives the connecting plate 71 to rotate, and the rotation of the connecting plate 71 drives the metering cylinder 4 to rotate, thereby realizing subsequent operations of the metering cylinder 4. During installation and disassembly, the metering cylinder 4 is separated from the connecting shaft 62 by removing the bolt 72.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A powder weighing instrument, comprising a base (1), characterized in that: A hopper (2) is fixedly mounted on the top of the base (1), and mounting mechanisms (3) are fixedly mounted on both left and right sides of the hopper (2), and a plurality of mounting mechanisms (3) are provided. A quantitative cylinder (4) is rotatably mounted on the hopper (2) through the mounting mechanisms (3), and a material transport trough (41) for storing and feeding materials is provided on the quantitative cylinder (4), and the quantitative cylinder (4) is rotatably connected to the bottom of the hopper (2); The quantitative cylinder (4) is provided with a variable displacement assembly (5) for changing the volume of the quantitative cylinder (4), the variable displacement assembly (5) comprising a grooved sheet (51), a trapezoidal screw (52) for moving the grooved sheet (51) and a baffle (53), the grooved sheet (51) being slidably connected to the material transporting trough (41), the left end of the trapezoidal screw (52) being rotatably connected to the right end of the grooved sheet (51), the left end of the baffle (53) being fixedly connected to the right end of the grooved sheet (51), and the baffle (53) penetrating and slidably connected to the right side of the quantitative cylinder (4); A driving assembly (6) for driving the metering cylinder (4) to reciprocate in a semicircle is fixedly mounted on the left side of the top of the base (1).

2. The powder weighing instrument according to claim 1, characterized in that: The material transport trough (41) is configured as a trapezoidal trough.

3. The powder weighing instrument according to claim 2, characterized in that: The groove-shaped piece (51) is arranged in a trapezoidal shape, and the groove-shaped piece (51) is fitted with the material conveying trough (41) and is connected with it in a limited sliding manner.

4. The powder weighing instrument according to claim 3, characterized in that: The mounting mechanism (3) comprises an upper semicircular plate (31), a lower semicircular plate (32) and a contraction assembly (33); the upper semicircular plate (31) is fixedly mounted on the outer wall of the hopper (2); and the upper semicircular plate (31) is connected to the lower semicircular plate (32) via the contraction assembly (33).

5. The powder weighing instrument according to claim 4, characterized in that: The retracting assembly (33) comprises a limiting rod (331) and a spring (332); the bottom end of the limiting rod (331) is fixedly connected to the top rear side of the lower semicircular plate (32); the top end of the limiting rod (331) passes through the upper semicircular plate (31) and is limitedly slidably connected to the upper semicircular plate (31); and the spring (332) is fixedly connected between the bottom surface of the upper semicircular plate (31) and the top of the lower semicircular plate (32).

6. The powder weighing instrument according to claim 5, characterized in that: The metering cylinder (4) is provided with a limiting ring, which is connected to the outer edges of the circular grooves of the upper semicircular plate (31) and the lower semicircular plate (32) for limiting rotation.

7. The powder weighing instrument according to claim 6, characterized in that: The driving assembly (6) comprises a rotating cylinder (61) and a connecting shaft (62); the rotating cylinder (61) is fixedly mounted on the top left side of the base (1); the output end of the rotating cylinder (61) is fixedly connected to the connecting shaft (62); and the right end of the connecting shaft (62) is provided with a connecting assembly (7) for fixedly connecting to the metering cylinder (4).

8. The powder weighing instrument according to claim 7, characterized in that: The connecting assembly (7) comprises a connecting piece (71) and a bolt (72); the connecting piece (71) is fixedly connected to the right end of the connecting shaft (62); and the connecting piece (71) is fixedly connected to the left end of the metering cylinder (4) via the bolt (72).

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