JPH0348002Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a hopper with a fine powder measuring device that fills a small amount of fine powder into a plurality of containers while measuring the contents.

[Prior Art] In the case of medicines, seasonings, etc., containers are often filled with several grams of fine powder.

The equipment used for such filling is
As shown in the figure.

01 is a hopper body, and a bottom plate 02 of this hopper body 01 is provided with fixing holes 03 in a row at equal intervals. Reference numeral 04 denotes a measuring plate that slides back and forth along the lower surface of the bottom plate 02, and this measuring plate 04 is provided with a measuring hole 05 similar to the fixing hole 03.

Reference numeral 06 indicates a fixing plate arranged and fixed on the lower surface of the measuring plate 04, and this fixing plate 06 has a fixing hole 0 at a position shifted from the fixing hole 03.
3, a discharge hole 07 is provided, and the fine powder in the hopper body 01 always enters into the fixing hole 03 due to its own weight. In this state, when the measuring plate 04 is slid in the direction of the arrow and the fixed hole 03 and the measuring hole 05 are aligned, the fine powder enters the measuring hole 05 through the fixed hole 03, and the measuring plate 04 is slid. When the metering hole 05 is aligned with the discharge hole 07, the fine powder in the metering hole 05 falls through the discharge hole 07 into the container below.

[Problems with Prior Art] However, the above device has the following problems.

a When the amount of fine powder in the hopper body 01 changes, the gravity applied to the fixing hole 03 and the metering hole 05 changes slightly, resulting in a change in the fine powder density, that is, the measurement, making it impossible to perform accurate quantitative filling.

b In the case of fine powder, such as seasonings with high hygroscopicity, changes in humidity will cause the fine powder to stick around the fixing hole, metering hole, and discharge hole, which causes a change in the volume of each hole, and this is also a major cause of measurement error.

c The fine powder inside the hopper body 01 is difficult to fall off due to friction along the inner surface of the hopper body 01, so it tends to be low near the center like a valley. Due to the effect of gravity, there will be slight differences in the measurements between the nearby holes and the holes on the left and right.

An object of the present invention is to solve the problems described in a to c above in a hopper equipped with a fine powder measuring device.

[Means for Solving the Problems] The configuration of the present invention proposed to achieve the above object is as follows.

A measuring chamber 2 having a horizontally long rectangular cross section with an open upper and lower surface is installed along the bottom of the hopper main body 1, which has a horizontally long rectangular plane, an inverted trapezoidal vertical side surface, and an open upper and lower surface; The hopper body 1 is rotatably supported between the lower surface of the hopper body 1 and the upper surface of the measuring chamber 2 by support shafts on the left and right sides, and when turned horizontally, the hopper body 1
and the upper surface of the measuring chamber 2, and a damper 3 configured to open when the measuring chamber 2 is turned vertically is incorporated, and the lower surface of the measuring chamber 2 is covered with a bottom plate 4,
A plurality of fixing holes 5 are provided at equal intervals in the longitudinal direction of the measuring chamber 2, and a measuring plate 7 is attached to the bottom plate 4 so as to be slidable in the longitudinal direction of the measuring chamber 2 from below along the bottom plate 4. The plate 7 is provided with the same number of measuring holes 8 as the fixing holes 5 at the same intervals as the fixing holes 5, and a fixing plate 9 is disposed along the lower surface of the measuring plate 7, The same number of discharge holes 10 as the fixing holes are provided at the same distance in the sliding direction of the weighing plate 7 from the fixing holes of the bottom plate 4, A ladder-shaped fixed frame 19 with leveling plates 18 attached at equal intervals is attached between the front and rear side plates 17 in the longitudinal direction of the chamber 2, and the leveling plates 18 are attached to the fixed frame 19.
The left and right parts are sloped so that they rise slightly outwards from the center of the measuring chamber 2; A movable frame 16 is built into the movable frame 16 so that it can slide freely, and a plurality of leveling legs 15 are attached at equal intervals to the lower part of the movable frame 16 so as to hold the fixed frame 19. A hopper with a fine powder measuring device characterized in that a side plate 12 of a movable frame 16 and an inclined surface 9 are formed on the leveling leg 15.

[Operation] The hopper body is filled with fine powder, and when the amount (level) in the measuring chamber 2 decreases, the damper 3 is opened and the fine powder is dropped into the measuring chamber 2. The movable frame 16 within the measuring chamber 2 constantly repeats reciprocating motion. Due to the movement of the movable frame 16, the leveling leg 15 reciprocates over the fixed hole 5 of the bottom plate 4 to prevent the fine powder from clumping around the fixed hole 5, and the leveling rod 13 equalizes the level in the measuring chamber 2. The leveling plate 18 of the fixed frame 16 is the leveling leg 1.
Due to the reciprocating movement of step 5, the fine powder that has moved toward the center is moved back to the outside (left and right) along the slope, thereby preventing the center from rising.

The above action is performed in the measuring chamber 2, and when the measuring hole 8 of the measuring plate 7 and the fixed hole 5 are aligned in this state, fine powder enters the measuring hole 8 from the fixed hole 5, and the measuring plate 7 When the metering hole 8 is aligned with the discharge hole 10 by sliding, the fine powder in the metering hole 8 falls through the discharge hole 10 into the container located below. Weighing and filling are performed by repeating this process.

[Embodiment] An embodiment of the present invention will be described below in detail based on the drawings. 1 is a hopper body (top tank) having a rectangular plane and an inverted trapezoidal cross section; 2 is a hopper body formed along the bottom of the hopper body 1; 3 is a damper built into the boundary between the measuring chamber 2 and the hopper body 1, and this damper 3 always maintains the level of fine powder in the measuring chamber 2 at a constant level by a motor (not shown). Its opening and closing are controlled as follows.

Reference numeral 4 designates the bottom plate of the measuring chamber 2, and six fixing holes 5 are provided in a row at equal intervals in the longitudinal direction of the hopper body 1.

Reference numeral 7 designates a measuring plate that slides back and forth in the longitudinal direction of the hopper body 1 along the lower surface of the bottom plate 4 by a motor, and this measuring plate 7 is provided with six measuring holes 8 in the same way as the fixing holes 5. .

Reference numeral 9 denotes a fixing plate disposed along the lower surface of the measuring plate 7, and the fixing plate 9 is located at a position that does not overlap with the fixing hole 5 (shifted position).
Six discharge holes 10 are provided in the same way as the fixing holes 5.

Reference numeral 11 denotes a leveling device attached to the inner bottom of the measuring chamber 2, and this leveling device 11 consists of a leveling rod 13 installed horizontally between the side frames 12, as shown in FIG. A movable frame 16 consisting of a leveling leg 15 and capable of reciprocating (sliding) in the longitudinal direction within the measuring chamber 2 via a shaft 14 driven by a motor.
In the leveling leg 15 of this movable frame 16, a leveling plate 18 is installed between the side plates 17, which slopes upward from the center to the outside, and from the fixed frame 19 whose left and right sides are fixed in the measuring chamber 2. It is completed.

Incidentally, as shown in FIG. 6, both end surfaces of the movable frame 16 are all sloped a.

The embodiment has the above configuration, and the fine powder charged into the hopper body 1 is dropped into the measuring chamber 2 by adjusting the damper 3 in accordance with the weight loss in the measuring chamber 2. The fine powder in the measuring chamber 2 enters the measuring hole 8 when the fixing hole 5 and the measuring hole 8 match, slides the measuring plate 7, and falls downward when the discharge hole 10 and the measuring hole 8 match. It is something.

In the above measurement, the movable frame 16 is constantly reciprocated by the motor, and the leveling leg 15 is connected to the fixed hole 5.
While reciprocating above, the leveling rod 13 eliminates lumps around the fixing hole 5, and the leveling rod 13 evens out the level of the fine powder in the measuring chamber 2 to make it uniform (levelling). Further, the leveling plate 18 of the fixed frame 19 moves the fine powder once to the center side by the reciprocating movement of the leveling leg 15 to the movable frame 16.
When returning, it is moved back along the slope to prevent a bulge from forming on the center side.

[Effects of the present invention] The present invention has the following effects due to the above-described configuration and operation.

a Since the damper 3 is installed between the measuring chamber 2 and the hopper main body 1, the amount of fine powder in the measuring chamber 2 is always maintained constant, and since the entire weight of the hopper main body 1 is not applied to the measuring chamber 2, the amount of powder is not clogged. It is possible to prevent measurement errors from occurring based on weight fluctuations.

b. Since the fixed frame 19 and the movable frame 16 are incorporated in the measuring chamber 2, the fine powder is constantly moving in the measuring chamber 2, and does not harden or become uneven in level. As a result, measurement errors can be eliminated even in the case of a powdered soup for instant noodles containing a large amount of salt.

c Leveling plate 18 provided on fixed frame 19 is movable frame 10
The reciprocating motion of the side leveling legs 15 prevents the movement of the fine powder toward the center, and returns the fine powder that has moved toward the center back along the slope, causing the fine powder to rise toward the center. This prevents measurement errors from occurring.

d Since the leveling leg 15 of the movable frame 16 reciprocates above the fixed hole 5, it evens out the fine powder that enters the measuring hole 8 through the fixed hole 5, thereby preventing solidification and sticking.

e Since the leveling rod 13 of the movable frame 16 equalizes the level in the measuring chamber 2, it equalizes the weight of the fine powder applied to the measuring hole 8 in the measuring chamber 2, thereby preventing measurement errors from occurring.

f Since the movable frame 16 has both end surfaces inclined outward, there is no fear that the fine powder will be compacted between it and the side wall (inner wall) of the measuring chamber 2 due to its reciprocating movement.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of a conventional hopper with a weighing device.
Fig. 2 is an exploded perspective view of the hopper according to the present invention, Fig. 3 is a vertical side view, Fig. 4 is a bottom view of the movable frame, Fig. 5 is a plan view of the fixed frame, and Fig. 6 is an end face of the movable frame. FIG. 7 is an assembled view of the leveling device in the measuring chamber, and FIG. 8 is a side view of the leveling device. 1...Hopper body, 2...Measuring chamber, 3...Damper, 4...Bottom plate, 5...Fixing hole, 7...Measuring plate, 8...Measuring hole, 9...Fixing plate, 10...
...Ejection hole, 16...Movable frame, 19...Fixed frame.

Claims (1)

[Scope of Claim for Utility Model Registration] A hopper whose plane is a rectangle long from side to side, whose vertical side surface is in the form of an inverted trapezoid, and whose top and bottom surfaces are open; The measuring chamber 2 is attached, and the hopper main body 1 is rotatably supported by supporting shafts on the left and right between the lower surface of the hopper main body 1 and the upper surface of the measuring chamber 2, and when turned horizontally, the hopper main body 1
and the upper surface of the measuring chamber 2, and a damper 3 configured to open when the measuring chamber 2 is turned vertically is incorporated, and the lower surface of the measuring chamber 2 is covered with a bottom plate 4,
A plurality of fixing holes 5 are provided at equal intervals in the longitudinal direction of the measuring chamber 2, and a measuring plate 7 is attached to the bottom plate 4 so as to be slidable in the longitudinal direction of the measuring chamber 2 from below along the bottom plate 4. The plate 7 is provided with the same number of measuring holes 8 as the fixing holes 5 at the same intervals as the fixing holes 5, and a fixing plate 9 is disposed along the lower surface of the measuring plate 7, The same number of discharge holes 10 as the fixing holes are provided at the same distance in the sliding direction of the weighing plate 7 from the fixing holes of the bottom plate 4, A ladder-shaped fixed frame 19 with leveling plates 18 attached at equal intervals is attached between the front and rear side plates 17 in the longitudinal direction of the chamber 2, and the leveling plates 18 are attached to the fixed frame 19.
The left and right parts are sloped so that they rise slightly outwards from the center of the measuring chamber 2; A movable frame 16 is built into the movable frame 16 so as to be able to slide freely, and a plurality of square-shaped leveling legs 15 are attached at equal intervals to the lower part of the movable frame 16 so as to hold the fixed frame 19. A hopper with a fine powder measuring device characterized in that a side plate 12 of a movable frame 16 and an inclined surface 9 are formed on the leveling leg 15.