JPH0647552Y2 - Weighing mixer - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a weighing mixer.

[Problems to be solved by conventional techniques and devices]

As shown in FIG. 3, a conventional metering mixer a for measuring and mixing powdery particles or the like has a mixer c independent of them, below the measuring cells b. That is, the weighing cells b ... Are hung from the top plate portion d of the frame body in a suspended manner, the weights of the powder particles in the respective weighing cells b are calculated by the load cells e, and then discharged downward. Then, the mixture is charged into an independent mixer c and mixed by the stirring blades in the mixing casing f of the mixer c.

Further, a plurality of storage hoppers g ... Is erected on the top plate portion d, and powder particles are introduced into the hoppers g ... from a cyclone (not shown). The powdery or granular material discharged from the hoppers g ... Is sent into the measuring cells b ... by a screw feeder h.

There is an annular gap between the hole j of the measuring box b into which the feed tube i of the screw feeder h is inserted and the outer periphery of the feeding tube i, and the conical shape of the measuring box b. Lower end k
And the receiving opening 1 of the mixing casing f also have an annular gap, so that there is a problem that foreign matter such as dust and dust is mixed in from these annular gaps. There was a problem that dust was scattered from the annular gap.

An object of the present invention is to solve these problems and to provide a weighing and mixing machine in which foreign matter is unlikely to enter and dust is not scattered from the inside.

[Means for Solving the Problems]

According to the present invention, a plurality of powder and granular material storage hoppers and a plurality of load cells are mounted on the upper surface of the top plate of the mixing casing forming the mixing chamber, and the weighing cells are weighed from the load cells on the lower surface side of the top plate. The measuring basin is hung vertically so that the measuring basin is internally provided in the mixing chamber.

[Action]

Since the measuring chamber is internally provided in the mixing chamber, the dust generated when the powder or granular material is charged into the measuring chamber from the screw feeder and discharged from the measuring chamber to the stirring blade does not go outside. Further, since it is surrounded by the outer wall of the mixing chamber forming the mixing chamber, there is no possibility that foreign matter may enter from the outside. Furthermore, the granular powders of different types can be simultaneously supplied from the plurality of powder and granular material storage hoppers to the measuring cell, and the granular powders can be measured and mixed efficiently and quickly.

〔Example〕

 The present invention will be described below based on the illustrated embodiments.

In FIG. 1 and FIG. 2, 1 and 2 are measuring cells, which are composed of a cylindrical portion, an inverted frustoconical taper portion having a discharge port 3 below, and an upper suspension member 11, The upper opening. Reference numeral 4 denotes a mixing casing that forms a mixing chamber 6 having a stirring blade 5 in the lower part.

A plurality of powder and granular material storage hoppers 8 and load cells 9 are attached to the upper surface of the top plate portion 7 of the mixing casing 4, and
On the lower surface side of the top plate portion 7, from each load cell 9 to the measuring cell 1,
2 ... are hung vertically so that the measuring cells 1, 2 ... Are internally contained in the mixing chamber 6. Specifically, the hanging hooks 11 and 11 of the measuring cells 1 and 2 are hooked on the hanging hooks 10 and 10 connected to the load cell 9, respectively, and the measuring cells 1 and 2 are suspended in the mixing casing 4. .

Further, the lower end discharge port of the storage hopper 8 is connected to the screw feeder 12, and the granular material is conveyed into the mixing chamber 6 as indicated by an arrow A, and is introduced from the upper opening of the measuring cell 1 (or 2). . In the illustrated example, it has four storage hoppers 8 ... And two of them are put into one weighing box 1 (or 2)-
That is, it corresponds to (2: 1) -but in the present invention, it is possible to increase or decrease the number of the storage hoppers 8 ... It is also preferable to support (3: 1).

An openable / closable discharge opening / closing member 13 is provided at the lower discharge port 3 of each of the measuring cells 1 and 2, and the member 13 is lifted up after measurement, the discharge port 3 is opened, and the stirring blade 5 is dropped. And mixed and stirred.

Further, 14 is a rotary actuator, and the stirring blade 5 is rotationally driven via a speed reducer 15.

Further, in the lower part where the stirring blade 5 is present, the mixing casing 4 is provided with a lid 17 with handles 16 and 16 so as to be detachably attachable, and a powder / particle take-out window portion 18 is formed.

In this way, the mixing casing 4 is hermetically sealed, and even if dust is scattered in the mixing chamber 6 inside, it does not leak to the outside.

[Effect of device]

According to the present invention, as described above, the measuring cells 1, 2 ...
Since it has a hanging shape, it can prevent foreign matter from being mixed in, and thus a powdery mixture product with high purity can be obtained. further,
It is also possible to prevent the diffusion of dust to the outside. In addition, the accuracy of weighing can be improved and the apparatus can be made compact. Moreover, the plurality of granular powder storage hoppers 8 ... Can quickly mix the granular material, and the working efficiency is good. Further, the load cell 9 and the measuring cells 1 and 2 enable accurate measurement of the powder or granular material with a simple structure and a small number of parts without using a complicated mechanism.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2 is a side view thereof. FIG. 3 is a front view showing a conventional example. 1,2 …… Measuring cell, 6 …… Mixing chamber.

Claims (1)

[Scope of utility model registration request] 1. A powder and granular material storage hopper 8 and a load cell 9 are provided on an upper surface of a top plate portion 7 of a mixing casing 4 which forms a mixing chamber 6.
, And each of the measuring cells 1, 2 ... is hung from the load cells 9 on the lower surface side of the top plate portion 7 in a hanging manner. A metering mixer characterized by being contained in the chamber 6.