JPH0929088A - Apparatus for mixing various powdery particles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a powdery particle mixing apparatus automatically subjected to effective washing within a short time and economically and efficiently performing filtering treatment during the treatment of various powdery particles. SOLUTION: A rotary shaft 1c is horizontally provided in a powdery particle mixing treatment chamber 1 and a ribbon screw 1d having a large diameter outer blade F1 and a small diameter inner blade F2 spirally wound therearound in reverse directions is provided to the outer diameter part or the rotary shaft 1c in a protruding state and a washing nozzle pipe 3 having a large number of the air jet slits S opposed to the outer diameter surface of a steel long pipe closed at one end thereof and opened at the other end thereof formed thereto longitudinally is horizontally passed through the powdery particle mixing treatment chamber 1 and a powdery particle charging chute 2. Two suction ducts D and two filters 4 each formed by covering a long retainer having a long oval shape with filter cloth are parallelly arranged in the vicinity of the ceiling of the powdery particle mixing treatment chamber 1 and the left and right inner wall surfaces of the powdery particle charging chute 2.

Description

Detailed Description of the Invention

[0001]

[Industrial application] The present invention relates to a mixing device for mixing and processing various powders such as food powders, chemical powders, and chemical powders.

[0002]

2. Description of the Related Art Granulated sugar, glucose, skim milk powder, starch, rice bran, spices, cement, fly ash, etc. are supplied to the market as raw materials in the form of granules from food products to industrial raw materials. Carbon black, salt, detergent,
Wheat, rice, maize, soybean, malt, silica sand, alumina oxide, titanium oxide, calcium carbonate, pulverized coal, lime, soda ash, food mix powder, wheat mix powder, soup powder, petrochemical powder, chemicals, pigment, compound fertilizer There are various types of powder such as phenol resin, polyethylene resin, ABC resin, PVC powder, polypropylene powder, powder coating, etc. These various powders are manufactured by the manufacturing company, and then bags or plastic containers. It is generally filled in and supplied to the market. So in small and medium factories,
The raw material bags and plastic containers brought in by freight cars and trucks are opened and used as they are, but since this is a large-scale factory, the amount of usage is enormous and the transportation and loading work becomes a heavy labor. The body is temporarily stored in a silo by air transfer, and various powders stored in this silo are batch pneumatically transported to each treatment step by various feeders as needed, and mixed by a mixer or dust collector provided for each treatment step. Alternatively, various powdery or granular material processing equipments for processing various powdery or granular materials for separation or the like have been put into practical use and used in various industrial fields. On the other hand, the mass of these various powders is extremely small and is as close to air as possible, so if the powders are processed, transferred, mixed, separated, etc., the powders in process will be treated. It has the property that it soars inside, and the soared powder is extremely likely to adhere to the upper surface inside the device, especially the corners. Moreover, since the adhesion of powder in the processing equipment is gradually accumulated every time the operation is continued,
Over a long period of time, for example, the powder that is a raw material for food products may cause corrosion, and the powder that is a chemical raw material may deteriorate the components. Moreover, these foreign substances may fall into the powder adhering to the ceiling of the processing equipment and be mixed with the normal powder being processed. When such a situation occurs, there may occur serious troubles such as deterioration of quality of various powders being processed and, in the worst case, loss of commercial value. Therefore, in general, the operation of various powder processing equipment should be stopped periodically, and the ceiling part of the processing equipment to which the powder adheres should be blown off by an operator with an air gun or washed with high-pressure jet water. ing. On the other hand, with these various types of powder and granular material processing equipment, the treated powder and particulate materials are likely to rise in the processing chamber or flow back into the powder supply system. A suction duct (negative pressure suction duct) for applying a negative pressure to form a smooth flow of air is provided outside the housing.

[0003]

However, in the case of cleaning the processing apparatus for various powders by the above-mentioned conventional method, for example,
In the case of a mixer, after stopping the processing operation of powder and granules, workers have to enter the inside of the machine to work,
Not only is it dangerous, but the workers are also contaminated, so they work in a very bad working environment. Further, particularly in a mixer or the like for processing powder for foodstuffs, on the contrary, an operator may bring in various bacteria into the machine, which is unsanitary. In addition, when cleaning the inside of the machine with water, take out all the powder inside, including not only the machine that is going to be cleaned but also various equipment connected before and after, and completely clean it. After the work is completed and the inside of the machine is completely dried after the cleaning is completed, the machine requires a large amount of work and a long outage period from the preparation to the cleaning work and the restart. It is uneconomical because the running cost of the entire device is high. Furthermore, if the powder adhering to the inside of the machine is washed with water, where there is a large amount of powder adhering to the machine, it will absorb the water from the washing and solidify. May remain in the. Furthermore, if a large-scale powder treatment equipment such as a plant is washed with water, a large amount of waste liquid is discharged from the powder treatment equipment after cleaning, so a waste liquid treatment equipment for treating this wastewater is required. However, there are many problems that the cost of the entire apparatus is increased. Further, even in the foreign matter filtering performance of the conventional ceiling-mounted dust collector, there was a problem that the foreign matter was effectively removed, but only inefficient treatment could be performed for the running cost. Furthermore, in the conventional treatment equipment for various powders and granules, a suction duct (negative pressure suction duct) is provided to prevent the treated powders from rising in the processing chamber or flowing back to the powder supply system. Is installed on the ceiling of the equipment for processing various powders and granules, and suction of negative pressure from the powder drop chute, which is a layer below the processing chamber equipped with a suction duct (negative pressure suction duct) By communicating from the body dropping chute to the suction duct (negative pressure suction duct), various powder particles that have risen or have a backflow phenomenon inside the powder dropping chute are sucked out to the suction duct (negative pressure suction duct). . Therefore, all of the various powder particles sucked and collected from the powder drop chute are suction ducts (negative pressure suction ducts).
It may not be guided until and remains on the inner wall surface of the long pipe which is communicated from the powder dropping chute to the suction duct (negative pressure suction duct). When such a phenomenon occurs, various powder particles remaining on the inner wall surface of the long pipe corrode, and various bacteria propagate. If these germs fall and are mixed with various types of powder particles being processed, the quality of various types of powder particles being processed is not deteriorated, and there is a problem in that it is not hygienic. Therefore, the present invention has been made to solve these problems, it is possible to automatically perform effective cleaning in a short time without depending on human work such as workers, and various powders. It is an object of the present invention to provide a mixing apparatus for various powders and granules that can perform hygienic treatment without generation of various bacteria during the treatment of the body.

[0004]

The present invention, which has been made to achieve the above object, is a mixing apparatus for mixing and processing various powders such as food powders, chemical powders, and chemical powders. A mixing chamber for mixing various powders supplied from the outside, which has a substantially semi-circular shape with an inlet for various powders in the upper part and a dropping door for various powders in the lower part. A stirring blade member horizontally attached to a predetermined position inside the mixing chamber,
A mixing device for various powder particles, which integrally extends downward from a predetermined position near the lower part of the dropping door of the mixing chamber, and is configured by a discharge chute member for dropping and transferring various powder particles discharged from the dropping door. In the vicinity of the inlet of the mixing chamber, a plurality of air cleaning nozzle pipe members mounted in opposition to predetermined positions on the inner wall surface outside the rotation range of the stirring blade member, and the ceiling of the discharge chute member Of a plurality of air cleaning nozzle pipe members mounted so as to face the inner wall surface of the body, an air cleaning nozzle pipe member mounted on the central ceiling surface of the discharge chute member, and an air cleaning nozzle pipe member of the discharge chute member. The gist is a mixing device for various kinds of powder and granules, which is equipped with a negative pressure suction duct and a dust collecting filter member which are respectively mounted immediately below. . The air-cleaning nozzle pipe member has a long tubular shape of a predetermined shape in which a plurality of through slits are formed in the closed hollow tube at a predetermined interval in the longitudinal direction of the outer diameter portion and an air supply port. At the supply port, a diaphragm electromagnetic valve member that emits high-pressure air according to a driving signal from the outside, a high-pressure air pressure storage tank member that supplies high-pressure air to the diaphragm electromagnetic valve member, and a high-pressure air pressure tank member It is preferable to communicate with a compressor member that supplies air. The air cleaning nozzle pipe member may be rotatably attached to the shaft through a rotary drive mechanism. The dust collecting filter member may be configured such that a plurality of elliptical elongated retainers coated with a filter cloth are laterally attached so that the inside of the elliptical elongated retainers has a negative pressure during operation of the mixing device.

[0005]

According to the mixing apparatus for various powders and granules of the present invention, when the powder and granules adhering to the inner surfaces of the mixing chamber and the discharge chute member of the mixing apparatus are removed, first, the diaphragm solenoid valve member is operated. High pressure pulsed air is supplied to the air cleaning nozzle pipe member. As a result, high-pressure pulsed air is discharged from the through slit of the air cleaning nozzle pipe member to the upper surface inside the mixing chamber and the discharge chute, and the shock wave generated by this action is attached to the powder inside the mixing chamber and the discharge chute. Will be blown away and removed. Further, the air cleaning nozzle pipe member releases high-pressure pulsed air while rotating by the rotary drive mechanism, and by this action, the inner upper surfaces of the mixing chamber and the discharge chute are cleaned in a wide range. . Furthermore, during operation of the mixing device, the negative pressure is maintained inside the negative pressure suction duct and the circular elongated retainer of the dust collecting filter member, and this action causes various powders from the mixing chamber to the discharge chute. When particles are dropped, a smooth flow of air is formed to prevent various particles from flying up inside the discharge chute and flowing back to the powder supply system, and to prevent dust and other particles. Foreign matter will be collected on the filter cloth.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a mixing apparatus for various powders and granules of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram of the internal structure of the mixer of the first embodiment to which the mixing apparatus for various powders and granules of the present invention is applied. As shown in FIG. 1, the mixer according to the first embodiment has a box-shaped powder and granular material mixing processing chamber 1 having a semicircular cross-section with a powder and granular material dropping port A formed on the upper surface thereof. The powder and granular material dropping port B formed in the lower portion of the chamber 1 and the powder and granular material dropping gate 1b for opening and closing the lower surface of the powder and granular material dropping port B via the gate opening and closing shaft 1a and the powder and granular material mixing processing chamber 1 It is composed of a powder and granular material dropping chute 2 and a powder and granular material dropping port C which are integrally formed in the lower portion. A rotary shaft 1c is laterally attached to the inside of the powder / granular mixture processing chamber 1, and an outer blade F1 having a large diameter and a middle blade F2 having a small diameter are provided on an outer diameter portion of the rotating shaft 1c. Ribbon screws 1d spirally wound in opposite directions are provided in a protruding manner. Further, as shown in FIG. 2, the inside of the powder and granular material mixing processing chamber 1 and the powder and granular material dropping chute 2 are opposed to the outer diameter surface of a long pipe made of steel pipe with one end closed and the other end open. A washing nozzle pipe 3 having a large number of air jetting slits S formed in the longitudinal direction is attached by penetrating in the lateral direction. Further, a suction duct D for exerting a negative pressure is provided in the ceiling portion of the powder and granular material mixing processing chamber 1 and in the vicinity of the left and right inner wall surfaces of the powder and granular material dropping chute 2, and inside the suction duct D, a long duct is provided. Two filters 4 each having a circular long retainer covered with a filter cloth are arranged in parallel.

On the other hand, as shown in FIG. 3, the cleaning nozzle pipe 3 laterally penetratingly mounted inside the powder and granular material mixing processing chamber 1 and the powder and granular material dropping chute 2 has an oil seal 5 and a diamond. It is rotatably attached via a flange type unit 6, and a double sprocket 7 and a single sprocket 8 are attached to the closed end of the cleaning nozzle pipe 3 therein, and an outer side of the double sprocket 7 is attached via a roller chain RC1. A gear motor 9 is connected to the inside of the double sprocket 7, and a roller chain RC2 is connected to the inside of the double sprocket 7 to drive the single sprocket 8 mounted on the closed side of all the remaining cleaning nozzle pipes 3 to make a circuit. On the other hand, on the opening side of the cleaning nozzle pipe 3, a diaphragm electromagnetic valve 11, a high pressure air accumulator tank 12 and a compressor are connected via a rotary joint 10. The diaphragm solenoid valve 11 is connected to a sequence controller SC that outputs an opening / closing signal of the solenoid valve in response to a command signal from the outside.

Next, the operation and effect of the mixer of the first embodiment having the above construction will be described with reference to the drawings. 4 and 5 are explanatory views of the operation of the mixer according to the first embodiment. The mixer of the first embodiment starts the geared motor 9 shown in FIG. 3 when various powder particles adhere to the inside of the powder particle mixing processing chamber 1 and the powder particle dropping chute 2. All the washing nozzle pipes 3 are rotated to either the left or right direction, and the compressor 13 is operated to supply high pressure air to the high pressure air accumulator tank 12 to bring it into a pressurized state. From this state, the sequence controller SC Operate. Then, the sequence controller SC controls opening / closing of the diaphragm solenoid valve 11 according to a sequential program stored in advance in the microcomputer. As a result, all cleaning nozzle pipes 3 are
As shown in, the high-pressure pulse air ejected from the slit S is ejected as a shock wave into the interior of the mixer that entrains the secondary air around it, and the ejection of this shock wave is
As shown in FIG. 4, it acts in the direction of 360 degrees, and blows away various powders and granules adhering to the inner top plate surface and inner wall surface of the mixer for air cleaning. In addition, when the mixing processing of various powders in the powder mixing chamber 1 is finished and the various powders are dropped inside the powder drop chute 2, first, the gate opening / closing shaft 1a is driven. Then, the granular material dropping gate 1b having the closed granular material dropping port B is opened downward as shown in FIG. Then, the various granular materials accumulated on the bottom surface of the granular material mixing processing chamber 1 drop onto the granular material dropping chute 2 via the granular material dropping port B,
Further, when trying to fall into the hopper H of various other powdery grain processing devices from the powdery grain dropping port C, at this time, suction ducts provided near the left and right inner wall surfaces of the powdery grain dropping chute 2. Since a negative pressure is constantly applied to D, a smooth flow of air is formed from the powder / grain dropping port C toward the suction duct D, and various powders dropped inside the powder / grain dropping chute 2 are formed. Among the particles, particles or dust particles that have risen or have caused a backflow phenomenon are collected by the filter cloth attached to the oblong elongated retainer of the filter 4 provided inside the suction duct D. .

Due to this action, the mixer according to the first embodiment can remove the powder adhering to the ceiling or the upper inner wall portion inside the powder and granular material mixing processing chamber 1 and the powder and granular material dropping chute 2 from the machine in operation. Without relying on human work by pausing or stopping,
Not only is it possible to perform air cleaning easily and instantly, but the suction duct D and the filter 4 are built into the inside of the powder dropping chute 2 to form an effective air flow, and It has become possible to suppress the rise of powder particles and the backflow phenomenon, and to prevent the generation of bacteria by eliminating residual powder particles. Therefore, it not only dramatically improves the overall operation rate of this type of equipment, which was said to have a relatively high running cost, but also greatly improves the operability and safety in handling the equipment. As a result, not only will it bring a huge economic effect to the companies and users who have introduced this device, but also perfect processing in terms of hygiene will be realized, and it will be possible to realize extremely high quality powders and various high value-added products. It has become possible to supply the granular material to the market.

In the first embodiment described above, a mixer using a ribbon screw was described as a means for mixing various powders and granules, but the mixing apparatus for various powders and granules of the present invention is not limited to this. Instead, it can be applied to, for example, a twin-screw type mixer. This will be described below as a second embodiment. FIG. 6 is an explanatory view showing the internal structure of the mixer of the second embodiment to which the mixing apparatus for various powders of the present invention is applied. As shown in FIG. 6, the mixer of the second embodiment has a box-shaped powder and granular material mixture processing chamber 20 having a substantially W-shaped cross section having a powdery and granular material dropping port A2 formed on the upper surface thereof, and a powder and granular material. Drop port B2 and gate opening / closing shaft 2
0a, a granular material dropping gate 20b, a granular material dropping chute 30 and a granular material dropping port C2. Among these, two rotary shafts 20c axially mounted parallel to each other in the lateral direction are axially mounted inside the powder and granular material mixing processing chamber 20, and four stirring blades are provided on the outer diameter portion of the rotary shaft 20c. 20d are evenly projected in the outer peripheral direction, and these four blades 20d form one set, and the rotary shaft 2
A plurality of them are provided in the length direction of 0c. In addition, inside the powder and granular material mixing processing chamber 20 and the powder and granular material dropping chute 30,
A cleaning nozzle pipe 40 is attached so as to penetrate in the lateral direction. Further, a suction duct D for exerting a negative pressure is provided in the ceiling part of the powder and granular material mixing processing chamber 20 and in the vicinity of the left and right inner wall surfaces of the powder and granular material dropping chute 30, and the inside of the suction duct D has a long length. Two filters 50 in which a filter cloth is attached to a circular long retainer are arranged in parallel.

Next, the operation and effect of the mixer of the second embodiment having the above construction will be described with reference to the drawings. 7 and 8 are explanatory views of the operation of the mixer of the second embodiment. The mixer of the second embodiment is provided with a powder and granular material mixing processing chamber 20.
And when various powder particles adhere to the inside of the powder particle dropping chute 30, first, the geared motor is started to rotate all the cleaning nozzle pipes 40 in either the left or right direction, and further, The compressor is operated to supply high-pressure air to the high-pressure air accumulator tank to bring it into a pressurized state, and the sequence controller is operated from this state. Then, the sequence controller controls the opening and closing of the diaphragm solenoid valve according to the sequential program stored in advance in the microcomputer. As a result, all the washing nozzle pipes 40 are air-washed by blowing away various powder particles adhering to the inner upper top plate surface and inner wall surface of the mixer, as shown in FIG. In addition, when the mixing process of various powders and granules in the powder and granules mixing processing chamber 20 is finished and the various powders and granules are dropped into the powdery granule dropping chute 30, first, the gate opening / closing shaft 20a is driven. The powder drop gate 20b is opened. Then, it falls from the granular material mixing processing chamber 20 to the granular material dropping chute 30, and further,
As shown in FIG. 8, the various types of granular materials that are about to fall from the granular material dropping port C2 into the hoppers of other various granular material processing devices are located in the vicinity of the left and right inner wall surfaces of the granular material dropping chute 30. Since a negative pressure is constantly acting on the provided suction duct D, a smooth flow of air is formed from the powder / particle mixing processing chamber 20 to the powder / particle dropping chute 30, and the powder / particle dropping chute 30 is formed. Of the various powder particles dropped inside the
Particles and dusts that have risen or caused a backflow phenomenon will be collected by the filter cloth attached to the oblong elongated retainer of the filter 50 provided inside the suction duct D, and the second embodiment. Also in the above, the same operation and effect as in the first embodiment can be obtained.

As described above in detail, the mixing apparatus for various powders and granules of the present invention is provided with an inlet for the various powders and granules in the upper part and a dropping door for the powders and granules in the lower part. A mixing chamber that has a semicircular shape and that mixes various powders supplied from the outside, a stirring blade member that is horizontally attached to a predetermined position inside the mixing chamber, and the vicinity of the lower part of the dropping door of the mixing chamber. In the vicinity of the inlet of the mixing chamber, in a mixing device of various powders, which is integrally extended downward from a predetermined position of the above, and is configured with a discharge chute member for dropping and transferring various powders discharged from the dropping door. With the plurality of air cleaning nozzle pipe members that are mounted so as to oppose a predetermined position on the inner wall surface that is outside the rotation range of the stirring blade member, and the body wall inner wall surface near the ceiling of the discharge chute member that is mounted so as to oppose each other. Multiple air cleaning nozzle pipe members and exhaust Comprising DOO a central ceiling air cleaning nozzle pipe member attached to the member, and a negative pressure suction duct and dust collecting filter member mounted respectively in the vicinity immediately below the air cleaning nozzle pipe member discharge chute member,
Furthermore, the air cleaning nozzle pipe member has an air supply port in a closed hollow tube and a long tube shape of a predetermined shape in which a plurality of through slits are formed at predetermined intervals in the longitudinal direction of the outer diameter portion, At the air supply port, a diaphragm electromagnetic valve member that emits high-pressure air according to a drive signal from the outside, a high-pressure air accumulator tank member that supplies high-pressure air to the diaphragm electromagnetic valve member, and a high-pressure air accumulator tank member The air cleaning nozzle pipe member is rotatably attached to the air cleaning nozzle pipe member via a rotary drive mechanism, and the negative pressure suction duct and the dust collecting filter member are filter cloths. A plurality of elliptical long retainers attached to the device are attached in the lateral direction, and the inside of the elliptical long retainer is configured to have a negative pressure during the operation of the mixing device. Reduces the running cost drastically because it is possible to clean the inside of the device easily and instantly without relying on human work by stopping or stopping the running machine. At the same time, the operating rate of the entire plant can be dramatically improved, and great effects can be expected in terms of operational operability, safety, and economics. During the processing operation of various powders and granules, it can be processed in a clean state without any generation of germs, so not only can sanitary perfect processing be performed, but various powders and granules to be handled remove the mixture. As a result, it has become possible to supply various high-quality powders and granules with high added value to the market. It is an extremely epoch-making technology, and the benefit to the industry is enormous.

[Brief description of drawings]

FIG. 1 is a first example to which a mixing apparatus of various powders according to the present invention is applied.
It is an internal structure explanatory view of the mixer of an Example.

FIG. 2 is an enlarged explanatory view of a main part of the mixer according to the first embodiment.

FIG. 3 is an enlarged explanatory view of a main part of the mixer according to the first embodiment.

FIG. 4 is an operation explanatory view of the mixer of the first embodiment.

FIG. 5 is an operation explanatory view of the mixer of the first embodiment.

FIG. 6 is a second example to which the mixing apparatus for various powders of the present invention is applied.
It is an internal structure explanatory view of the mixer of an Example.

FIG. 7 is a diagram illustrating the operation of the mixer according to the second embodiment.

FIG. 8 is an explanatory view of the operation of the mixer of the second embodiment.

[Explanation of symbols]

 1,20 Powder mixing processing chamber 1a, 20a Gate opening / closing shaft 1b, 20b Powder dropping gate 1c, 20c Rotating shaft 1d Ribbon screw 2,30 Powder dropping chute 3,40 Cleaning nozzle pipe 4,50 Filter 5 Oil seal 6 Diamond flange type unit 7 Double sprocket 8 Single sprocket 9 Geared motor 10 Rotary joint 11 Diaphragm solenoid valve 12 High-pressure air accumulator tank 13 Compressor 20d Blade A, B, C Dust suction port D Suction duct F1 Outer blade F2 Medium Blade S Slit RC1, RC2 Roller chain SC Sequence controller

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[Procedure amendment]

[Submission date] April 10, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of drawings]

FIG. 1 is a first example to which a mixing apparatus of various powders according to the present invention is applied.
It is an internal structure explanatory view of the mixer of an Example.

FIG. 2 is an enlarged explanatory view of a main part of the mixer according to the first embodiment.

FIG. 3 is an enlarged explanatory view of a main part of the mixer according to the first embodiment.

FIG. 4 is an operation explanatory view of the mixer of the first embodiment.

FIG. 5 is an operation explanatory view of the mixer of the first embodiment.

FIG. 6 is a second example to which the mixing apparatus for various powders of the present invention is applied.
It is an internal structure explanatory view of the mixer of an Example.

FIG. 7 is a diagram illustrating the operation of the mixer according to the second embodiment.

[Explanation of reference numerals] 1,20 Powder / granule mixing processing chamber 1a, 20a Gate opening / closing shaft 1b, 20b Powder / granule dropping gate 1c, 20c Rotating shaft 1d Ribbon screw 2,30 Powder / granular dropping chute 3,40 Cleaning nozzle pipe 4,50 Filter 5 Oil seal 6 Diamond flange type unit 7 Double sprocket 8 Single sprocket 9 Geared motor 10 Rotary joint 11 Diaphragm solenoid valve 12 High pressure air storage tank 13 Compressor 20d Blade A, B, C Powder drop D suction duct F1 Outer blade F2 Middle blade S Slit RC1, RC2 Roller chain SC Sequence controller

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B01F 15/02 B01F 15/02 C // B29B 7/26 9350-4F B29B 7/26

Claims (4)

[Claims] 1. A mixing device for mixing and processing various powders such as food powders, chemical powders, chemical powders, etc., in which an input port for various powders is provided at the top and various powders are provided at the bottom. A mixing chamber that has a substantially semi-circular shape with a dropping door for granules, mixes various powders and granules supplied from the outside, and a stirring blade that is horizontally attached at a predetermined position inside the mixing chamber. Various granular materials composed of a member and a discharge chute member that integrally extends downward from a predetermined position near the lower part of the dropping door of the mixing chamber and drops and transfers various granular particles discharged from the dropping door. In the mixing device, a plurality of air cleaning nozzle pipe members mounted so as to oppose a predetermined position of the inner wall surface outside the rotation range of the stirring blade member near the input port of the mixing chamber, and the discharge chute member. The inner wall surface of the body near the ceiling of the A plurality of worn air cleaning nozzle pipe members, an air cleaning nozzle pipe member attached to the central ceiling surface of the discharge chute member, and a negative pressure attached immediately below the air cleaning nozzle pipe member of the discharge chute member. A mixing device for various powders and granules, comprising a suction duct and a dust collecting filter member. 2. The air cleaning nozzle pipe member has a long tube shape of a predetermined shape in which a closed hollow tube is provided with an air supply port and a plurality of through slits at predetermined intervals in the longitudinal direction of the outer diameter portion. The air supply port includes a diaphragm electromagnetic valve member that discharges high pressure air according to a drive signal from the outside, a high pressure air accumulator tank member that supplies high pressure air to the diaphragm electromagnetic valve member, and the high pressure air. The mixing device for various powders and granules according to claim 1, wherein the accumulator tank member is communicated with a compressor member that supplies high-pressure air. 3. An apparatus for mixing various powders and granules according to claim 1, wherein the air cleaning nozzle pipe member is rotatably attached to the shaft through a rotary drive mechanism. 4. The dust collecting filter member is configured such that a plurality of oblong elongated retainers coated with a filter cloth are laterally attached, and the inside of the oblong elongated retainer is under negative pressure during operation of the mixing device. The mixing apparatus for various powder and granules according to claim 1.