JPH0223114A - Powder weighing and transfer equipment - Google Patents

Abstract

PURPOSE:To enable both the automation and the production of many types and less quantity of items in the titled equipment used to mix colorant in the food production process by relatively transferring both a cylindrical container containing weighed powder and suction nozzle, sucking the powder with a suction nozzle and carrying it to a staged mixer. CONSTITUTION:Various types of powder are individually put into a weighting hopper 14 from receiving tanks 10 and further into sectionally circular container 18. These sectionally circular containers 18 are carried by a conveyor 16 and sequentially go below the tanks 10 containing various types of powder material and the weighting hoppers 14 before they are put into the put thereinto. The container 18 having contained all materials is carried below a turning table 22. While said container 18 is turned, the materials are sucked with a suction nozzle 34 and transferred into a mixer via a separator 32. In such constitution the many kinds and less quantity production may be automatized.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a weighing and conveying device for a process of weighing and blending various types of powder and granular materials, particularly in the field of food processing, etc.
This article relates to an automatic needle fl [feeding device] suitable for adding various kinds of powder and granular materials such as colorants to raw materials.

[Prior Art] Automation is progressing in mass production equipment by making storage tanks, weighing machines, transportation machines, etc. independent for each powder or granule material.

On the other hand, in the food processing field, coloring agents are added to food raw materials.
Due to the so-called high-mix, low-volume production in which powders and granules such as fragrances, preservatives, taste agents, and bulking agents are added in small quantities, the actual situation is that the various powders and granules are generally weighed and transported manually.

[Problem to be solved by the invention]

However, if the above-mentioned mass production equipment is configured as a blending line for each powder or granule that produces a wide variety of small quantities, the equipment cost would be extremely high, and this would not be applicable in terms of operational efficiency and production efficiency.

An object of the present invention is to eliminate the drawbacks of the prior art, integrate a weighing machine and a transportation line, and provide a weighing and conveying device that can be applied to high-mix, low-volume production and can be automated. Another object of the present invention is to provide a weighing and conveying device that can reliably suction convey the weighed powder and granules when carrying them out, and can also perform cleaning processing after being carried out if necessary. ] In order to achieve the above object, the powder and granule weighing and conveying device according to the present invention includes a plurality of powder and granule weighing and conveying devices used in a process of weighing and blending a wide variety of powder and granules. a circular cross-sectional container for receiving the powder and granular material weighed by the weighing machine; a suction nozzle inserted into the circular cross-sectional container to suck the powder and granular material and serve as a conveyance port to a subsequent mixer;
The structure includes a relative movement drive means for the circular cross-sectional container and the suction nozzle. In this case, the suction nozzle has a suction port along the side wall having a circular cross section, and an air blowing nozzle may be provided together with the suction nozzle.

[Effect]

According to the above configuration, various types of powder and granules are divided into blocks according to measurement capacity, gastrointestinal accuracy, properties, order of delivery to the next process, etc., and weighed by a weighing machine installed in each block. The powder and granules required for a batch are sequentially charged into a container having a circular cross section and transported to a predetermined suction location. Then, a suction nozzle is inserted into this container, and while the two are relatively rotated, raised and lowered, and moved horizontally, the materials can be sucked up and sent to the next process. Since the suction nozzle has a suction port along the side wall of the cylindrical container, the powder particles are first left in the center by moving the suction nozzle along the side wall of the container, and then the remaining powder particles are removed by horizontal movement of the nozzle. The body can be transported by suction. This makes it possible to transport the entire amount without creating dead space within the cylindrical container.

Furthermore, by providing an air blowing nozzle to the nozzle, the cylindrical container can be cleaned upon completion of carrying out.

〔Example〕

EMBODIMENT OF THE INVENTION Below, a concrete example of the measuring and conveying apparatus for powder and granular materials according to the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a configuration diagram of a measuring and conveying device for powder and granular material to be measured and investigated. Various types of powder and granular materials are placed in separate receiving tanks 10 for each type, and are fed into a weighing hopper 14 by a feeder 12 provided at an outlet thereof. The weighing hopper 14 and the receiving tanks 10 are cut out and divided into blocks, and each receiving tank 10 is divided into blocks.
Weigh the powder and granules individually introduced from O. A conveyor 16 is installed below the discharge ports of these weighing hoppers 14 along a line surrounding each weighing hopper 14, and a cylindrical container 18 having a circular cross section is placed on the conveyor 16. This cylindrical container 18 is for receiving the powder from the weighing hopper 14 and is moved by the conveyor 16. This cylindrical container 18 is stopped at a position concentric with the weighing hopper 14, and when the weighing is completed, a gate 20 provided at the discharge port of the weighing hopper 14 is opened to receive the discharged powder and granules. After confirming that the entire amount has been discharged, the gate 20 is closed, and the cylindrical container 18 is sent to the next weighing hopper 14 by the conveyor 16, and similarly weighed powder and granules are received from the weighing hopper 14 and stacked one after another. . A cylindrical container filled with all the required amount for each batch is transported by a conveyor 16, and a rotary table 22 is placed at the moving end of the conveyor 16.
has been installed, and it is designed to be stopped above it. A rotating electric motor 24 is attached to the rotating table 22, and the cylindrical container 18 stopped on the rotating table 22 is
1 to 10 depending on the operation of the rotating electric motor 24.
It is designed to give a slow rotation of about 500 revolutions per minute.

On the other hand, a mixer 26 is installed adjacent to the installation position of the rotary table 22, and is adapted to receive the powder and granules sent from the cylindrical container 18. A powder suction conveyance means is provided between the mixer 26 and the cylindrical container 18, and this is equipped with a conveyance pipe 30 to which suction negative pressure is applied by the suction fan 28. Separator 3 placed directly above mixer 26
A suction nozzle 34 attached to the tip of the transport pipe 30 is introduced into the cylindrical container 18 to suck up the powder and granular material in the cylindrical container 18 and transport it to the separator 32 by suction. . A rotary pulp 35 is provided at the discharge port of the separator 32, and the rotary valve 35 enables the separated powder and granular material to be supplied into the mixer 26 below.

By the way, the transportation piping 30 from the cylindrical container I8 to the separator 32 includes a horizontal pipe section 36 directly connected to the separator 32, and a cylindrical container on the rotary table 22 that is bent at a right angle from the distal end side of the horizontal pipe section 36. It consists of a vertical tube section 38 into which a tip suction nozzle 34 is inserted. The horizontal pipe portion 36 has a double pipe structure, and the suction nozzle 34
The vertical tube portion 34 also has a double tube structure to allow vertical movement of the suction nozzle 34. Each of these double pipe parts is expanded and contracted by a driving means (not shown), so that the moving position of the suction nozzle 34 can be changed as desired.

Therefore, when the cylindrical container reaches the rotary table 22 for 1 day, the suction fan 2 is operated to enable the suction transport line to suck up water, and then the a-crivalve 35 is operated,
The suction nozzle 34 is gradually lowered to suck up the powder inside the cylindrical container 18 and throw it into the mixer 26 for the next step. The powder and granular material in the cylindrical container 1B is sucked from the top in the reverse order to the order in which they were introduced. During this suction operation, the cylindrical container rotates, so even if the centers of the suction nozzle 34 and the cylindrical container 18 are misaligned, there is little mixing of powder and granules during suction, and the order of transfer to the next process is stable. are doing.

By the way, if the powder is sucked up almost at the center of the cylindrical container 18 as described above, a dead space will be created in the lower part of the cylindrical container 18, and there is a great risk that it will remain. Therefore,
If the suction nozzle 34 is installed near the inner wall surface of the cylindrical container 18 as shown in FIG.
, B, C, and D, the slippery particles are sucked up by the edges, a, and corners of the powder, so that the order becomes more stable and the occurrence of bridges can be suppressed. In addition, dead space for one day in the cylindrical container will occur in the center, and this can be easily resolved by horizontally moving the suction nozzle 34. Therefore, in automatic operation, the inner cylindrical container 1
When the suction nozzle 34 reaches the bottom by downward movement, the inner cylindrical container 18 is moved by a horizontal moving machine fJ of the transport pipe (not shown).

Further, in FIG. 2, an air blowing nozzle 40 is attached to the end of the suction nozzle 34, and the inner wall of the cylindrical container 1 is simultaneously cleaned with air by intermittent blowing of compressed air during suction. Cleaning air is supplied from a pipe 42 attached to the transport pipe 30, and after being blown out toward the wall,
It is sucked by the suction action of the suction nozzle 31,
Dust generation is kept to a minimum.

In this way, according to this embodiment, required amounts of powder and granular materials of many types are continuously introduced into the cylindrical container 18, and the container is moved onto the rotary table 22, and the suction nozzle 34 is moved from the upper part to the lower part I4. Since the cylindrical container 18 is rotated while being pointed, the container is constructed as a conveying device that sucks up and transports the entire amount of powder and granules placed in one container from the top using suction pneumatic transportation. It is possible to automatically weigh and transport powder and granules for high-mix, low-volume production using fewer weighing machines than the number of products.

Next, FIGS. 3 and 4 show another embodiment. In this example, the cylindrical container 18 is transferred to the conveyor 16 without being moved to the rotary table 22.
The relative rotation of the cylindrical container I8 and the suction nozzle 34 is controlled by the lid 4 of the cylindrical container 1 day.
4, and install the transportation pipe 30 in the center of this M44.
The vertical pipe portion 38 is inserted. An outer cylinder having a double tube configuration was used as an insertion cylinder, and this insertion cylinder was bent into an L-shape within the cylindrical container 18 and extended toward the inner wall of the cylindrical container 18, and a suction nozzle 34 was formed at the extended end. It has a structure. A mechanism for rotating the suction nozzle 34 is provided at the top of the lid 44, and this mechanism is driven by a motor 46 installed on the lid 44.
The outer cylinder is rotated by obtaining the rotation of . Also,
A relative downward movement of the suction nozzle 34 can be obtained by driving the outer cylinder up and down by a drive source (not shown). Further, the air blowing nozzle 4o is arranged at a position opposite to the suction nozzle 34, thereby preventing air blowing for suction and cleaning from mixing.

According to the above embodiment, the rotary table 22 can be omitted and the structure can be simplified.

〔Effect of the invention〕

As explained above, according to the powder and granular material weighing and conveying device according to the present invention, a variety of powder and granular materials are placed in one cylindrical container, and the particles are moved relative to the cylindrical container. Since the suction nozzle pointing to the top layer allows suction to be conveyed in order from the upper layer, an excellent effect can be obtained in that a large variety of small quantities of powder and granules can be automatically conveyed using less measuring means than the number of items to be handled. In particular, by arranging the suction nozzle along the inner wall of the cylindrical container, each type of product can be sequentially transported out of the cylindrical container, and can be transported without bridging. Further, by providing an air blowing nozzle, there is an advantage that cleaning processing can be performed after the completion of carrying out the powder and granular material from the cylindrical container.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a device showing an embodiment of the present invention, FIG. 2 is a sectional view of the main part of the same device, FIG. 3 is a diagram of the device configuration according to another embodiment, and FIG. 4 is a main part of the same device. FIG. lO...Accepting tank, 14...Measuring hopper, 16...Conveyor, 18...
Cylindrical container, 22...Rotary table, 28...
...Suction fan, 30...Transport piping, 32.
... Separator, 34 ... Suction nozzle. Applicant: Hitachi Plant Construction Co., Ltd.See Figure 2, Figure 1, Figure 28.

Claims (3)

[Claims] (1) In a powder weighing and conveying device used in the process of weighing and blending various kinds of powder and granules, a circular cross-section container that receives the powder and granules weighed by multiple weighing machines, and The present invention is characterized by comprising a suction nozzle that is inserted into the cross-sectional container to suck in the powder and granular material and serves as a transport port to a subsequent mixer, and a means for driving relative movement of the circular cross-sectional container and the suction nozzle. Measuring and conveying device for powder and granular materials. (2) The apparatus for measuring and conveying powder or granular material according to claim 1, wherein the suction nozzle has a suction port along a side wall having a circular cross section. (3) The apparatus for measuring and conveying powder and granular material according to claim 1, wherein the suction nozzle is also provided with an air blowing nozzle.