JP5165607B2 - Conical mixing treatment apparatus and operation method thereof - Google Patents

Description

  The present invention relates to a conical mixing processing apparatus, and more particularly to an apparatus and method capable of effectively performing processing such as mixing, crushing, drying, cooling, and sterilization of an object to be processed located below a rotor blade. It is concerned.

Conventionally, a conical mixing treatment apparatus 1 'has been used as an apparatus for mixing, crushing, drying, cooling, and sterilizing various foods, feeds, pharmaceuticals, chemicals, and the like. As shown in FIG. 6 (a), this is provided with a rotating blade 27 'in an inverted conical processing tank 2', and this rotating blade 27 'causes a circulating flow to occur in the entire workpiece W to be processed. The performance of mixing, crushing, drying, cooling, and sterilization of the processed product W is enhanced.
However, conventionally, a rotary valve R for holding and discharging the workpiece W is provided below a discharge port 23 ′ formed at the bottom of the processing tank 2 ′. A dead space in which the workpiece W is not circulated is formed in the valve R.

As a result, the workpiece W once entering the rotary valve R stays in this portion without circulating in the treatment tank 2 ′, and is hardly mixed, crushed, dried, cooled, or sterilized. It will be in contact with the workpiece W that is being processed normally and adversely affect its properties.
Even when a discharge device other than the rotary valve R as described above is used, a gap is generated between the lower end surface of the discharge port 23 ′ and the upper surface of the closed open / closed body of the discharge device. Since this gap becomes a dead space, the same problem occurs.

Therefore, in order to solve such a problem, the present applicant has developed an apparatus as shown in FIG. 6B and has already filed a patent application (see Patent Document 1).
In this apparatus, a discharge device 103 that opens and closes the discharge port 123 is attached below the treatment tank 102, the discharge device 103 includes a bottom partition plate 131, and an opening 132 is formed in the bottom partition plate 131. In addition, a configuration including a lid 133 for closing the opening 132 is employed.
And according to this invention, since the influence regarding the dead space where the to-be-processed object W thrown into the processing tank 102 is not circulated was eliminated, mixing, crushing, drying, cooling, sterilization, etc. of the to-be-processed object W were carried out. Although it was possible to do it effectively, there was room for improvement in terms of time efficiency.
And after that, the present applicant has continued research and development for more effectively performing processing such as mixing, crushing, drying, cooling, and sterilization of the workpiece W in this type of apparatus.

JP 2001-280843 A

  The present invention is made from such a background, and promotes the flow of the object to be processed located between the lower end of the rotor blade and the lid in the treatment tank, thereby mixing, crushing, drying, cooling. An object of the present invention is to develop a novel conical mixing treatment apparatus and an operation method thereof that can perform sterilization and the like more effectively.

  That is, the conical mixing treatment apparatus according to claim 1 is one or more of mixing, crushing, drying, cooling, and sterilization of an object to be processed by a rotary blade provided in an inverted conical processing tank. In the processing apparatus, a discharge device that opens and closes a discharge port formed at the bottom of the processing tank is attached below the processing tank, and the discharge side of the processing tank is connected to the discharge device. A bottom partition plate for partitioning is provided, an opening is formed in the bottom partition plate, and a lid for closing the opening is further provided, and the lid is provided with a stirring gas supply mechanism. It is characterized by this.

  In addition to the above requirements, the conical mixing treatment apparatus according to claim 2 is such that the lid is formed by covering the opening at the top of the ventilation chamber with gas, and the stirring gas is provided in the ventilation chamber. It is characterized by the fact that a nozzle for supplying is provided.

  Furthermore, the conical mixing treatment apparatus according to claim 3 is characterized in that, in addition to the requirement according to claim 2, the ventilation body is constituted by a sintered wire mesh.

  According to a fourth aspect of the present invention, there is provided a method for operating the conical mixing treatment apparatus, wherein the apparatus according to the first, second or third aspect is used, and the bottom partition plate and the lid in the discharge device are made to function as the bottom surface of the treatment tank. The stirring gas is supplied from the stirring gas supply device to the workpiece located on the lid body.

Furthermore, the operation method of the conical mixing treatment apparatus according to claim 5 is in addition to the requirement of claim 4, and the stirring gas is usually equal to or less than the minimum fluidization wind speed of the object to be treated located in the treatment tank. It is characterized in that it is supplied at a wind speed of 5 mm and is periodically supplied at a wind speed higher than the minimum fluidization wind speed.
The above problems can be solved by using the configuration of the invention described in each of the claims as a means.

First, according to the first aspect of the present invention, by supplying the stirring gas from the stirring gas supply mechanism into the processing layer, the flow of the object to be processed located between the lower end portion of the rotor blade and the lid is promoted. It is possible to effectively perform processing such as mixing, crushing, drying, cooling, and sterilization.
Moreover, the processing efficiency of mixing, crushing, drying, cooling, sterilization, etc. can be improved without impairing the discharging performance of the discharging device provided at the bottom of the processing tank.

  According to the second aspect of the present invention, the configuration of the apparatus can be simplified by using the lid as a part of the stirring gas supply mechanism.

  Furthermore, according to the invention described in claim 3, it is possible to prevent the object to be processed from dropping from the ventilation body.

According to the invention described in claim 4, the treatment such as mixing, crushing, drying, cooling, and sterilization is effectively performed by encouraging the flow of the object to be processed located between the lower end of the rotor blade and the lid. Can be done.
Moreover, the processing efficiency of mixing, crushing, drying, cooling, sterilization, etc. can be improved without impairing the discharging performance of the discharging device provided at the bottom of the processing tank.

  Furthermore, according to the invention described in claim 5, the flow of the object to be processed located between the lower end portion of the rotor blade and the aerating body is prevented while effectively preventing clogging of the object to be processed with respect to the aerating body. By prompting, operations such as mixing, crushing, drying, cooling, and sterilization can be effectively performed.

It is the side view which shows the conical mixing processing apparatus of this invention, and the side view which expands and shows the cover body periphery. It is a perspective view which shows the discharge device periphery partly seeing through. It is a disassembled perspective view which shows a processing tank lower part, a bottom part partition plate, and a cover body. It is a side view which shows partially seeing a mode that fluidization of a processing object is promoted by a stirring gas supply mechanism and this. It is a graph which shows the wind speed of stirring gas. It is a vertical side view which shows the flow state of the to-be-processed object in the existing apparatus described in the background of invention.

  The best mode of the conical mixing treatment apparatus and its operation method according to the present invention is as shown in the following examples, but appropriate modifications may be made to these examples within the scope of the technical idea of the present invention. Is also possible.

The present invention will be described below based on the illustrated embodiments. In this description, first, the structure of the conical mixing treatment apparatus 1 of the present invention will be described, and then the operation method of the conical mixing processing apparatus of the present invention will be described together with the operation mode of this apparatus. Do.
In FIG. 1 (a), what is indicated by reference numeral 1 is the conical mixing processing apparatus of the present invention, which mixes and heats an object to be processed W put in the processing tank 2 to be processed. It is an apparatus for exhausting condensable gas (such as water vapor) generated from the object W to dry the object W to be processed. In addition, processing, such as mixing, crushing, cooling, and sterilization, can also be performed using this apparatus. And the to-be-processed object W after performing a predetermined | prescribed process is discharged | emitted outside by the operation | movement of the discharge device 3 provided in the downward direction with respect to the said processing tank 2. As shown in FIG.

First, the processing tank 2 will be described. In this case, a jacket outer body 21 is arranged at an appropriate interval with respect to almost the entire outside of the inverted conical processing tank inner plate 20. Then, by closing the upper openings of the processing tank inner plate 20 and the jacket outer body 21 with the top plate 22, the inner space of the processing tank inner plate 20 is set as a processing space S for drying treatment.
Moreover, the lower opening part of the said processing tank inner board 20 is made into the discharge port 23, and the flange F is provided so that this discharge port 23 may be enclosed.

Further, a jama plate 24 is appropriately provided between the processing tank inner plate 20 and the jacket outer body 21 to connect the two members, and a heating medium such as hot water, steam, oil, or a cooling medium such as water, oil is used. It forms a circulation path. An inflow pipe 21a is attached to the lower part of the jacket outer body 21, while an outflow pipe 21b is attached to the upper part of the jacket outer body 21, and a heat medium circulator (not shown) is connected to the inflow pipe 21a and the outflow pipe 21b. To do. Incidentally, when condensable steam is used as a heating medium, steam is supplied to the outflow pipe 21b, and condensed water is discharged from the inflow pipe 21a.
In addition, when the conical mixing processing apparatus 1 is only for mixing or crushing, such a configuration for heating may be omitted. Further, when the inside of the processing tank 2 is decompressed and dried, auxiliary equipment such as a condenser and a vacuum pump is provided on the rear side of the exhaust port 22b described later.

The top plate 22 is provided with a motor M and a speed reducer 25, and its output shaft is connected to a rotating shaft 26 disposed in the processing space S. The rotating shaft 26 has a helical rotation. Two wings 27 are attached with a phase difference of 180 °.
The rotating shaft 26 and the rotating blades 27 extend to the vicinity of the lower end of the processing tank 2. Usually, no bearing is provided at the lower end portion of the rotating shaft 26, but it may be provided.
In addition, about the said rotary blade 27, you may use what is called what is called a paddle type | mold which made only one or remove | eliminated a part of the track | orbit, and made the track | truck discontinuous.
Further, the top plate 22 is provided with an appropriate opening to form a charging port 22a and an exhaust port 22b.

Next, the discharge device 3 will be described. As shown in FIG. 2, the discharge device 3 includes a bottom partition plate 31 at an upper surface opening portion of an inverted truncated cone-shaped casing 30 whose upper and lower surfaces are opened, and the bottom partition plate 31. In addition, an opening 32 is formed, and a lid 33 for closing the opening 32 is provided.
Here, the opening 32 has substantially the same diameter as the discharge port 23 in the treatment tank 2 as shown in FIGS. As shown in FIG. 3B, the opening 32 may be smaller in diameter than the discharge port 23 in the processing tank 2, and may be further eccentric with respect to the discharge port 23.

Further, as shown in FIG. 1B, FIG. 3, etc., the lid 33 is a member that is also one of components of a stirring gas supply mechanism 5 described later, and is an opening in the upper part of the bowl-shaped vent chamber 51. It is formed so as to be covered with the gas 52.
In addition, if the said ventilation body 52 is a porous thing, a metal net | network, a punching board, etc. can be used, but in this Example, as an example, so that a fine particle may not fall to the ventilation chamber 51 side, It was made up of a sintered wire mesh whose mesh was on the order of μm.

Next, a mechanism for moving the lid 33 close to and away from the opening 32 and closing the opening 32 with the lid 33 will be described. As shown in FIG. 2, this mechanism is provided with bearings 34 on the front and rear surfaces of the casing 30, and a shaft 35 is inserted with the gate arm 36 positioned between the bearings 34, and a key is appropriately used. Thus, the gate arm 36 is fixed to the shaft 35.
Here, the gate arm 36 is obtained by fixing a flat plate to the collar using a reinforcing plate as appropriate. A hole (not shown) is formed in the flat plate, and a bolt 37 is inserted into the hole. The tip end portion of 37 is screwed into a female screw portion formed on the lid body 33. That is, by adopting such a structure, the lid body 33 is moved by the rotation of the shaft 35 so as to be fitted into the opening 32, and the opening 32 can be closed.

  Next, a mechanism for rotating the shaft 35 will be described. First, the lever arm 38 is inserted into a portion protruding from the bearing 34 on the front side of the shaft 35 and is fixed to the shaft 35 by using an appropriate key. The lever arm 38 has a flat plate fixed to the collar using a reinforcing plate as appropriate, and a rod 39a of the air cylinder 39 is fixed to the flat plate. The body portion of the air cylinder 39 is fixed to the casing 30 using an appropriate bracket.

  Next, the agitation gas supply mechanism 5 described above will be described. This is a mechanism for supplying the agitation gas A into the treatment tank 2 through the aeration body 52, and is provided in the aeration chamber 51 as shown in FIG. An air supply pipe 54 is connected to the nozzle 53, and the air supply pipe 54 is connected to a stirring gas supply source 57 through a valve 55 and a header 56. A compressor or the like is applied as the stirring gas supply source 57.

The conical mixing treatment apparatus 1 of the present invention has the structure as described above as an example, and the bottom partition plate 31 of the discharge device 3 with respect to the flange F in the treatment tank 2 as shown in FIGS. In this state, the bottom partition plate 31 and the lid 33 in the discharge device 3 function as the bottom surface of the processing tank 2.
The operation method of the conical mixing treatment apparatus of the present invention will be described below together with the operation modes of these apparatuses.

  First, the cylinder 39 is contracted to close the discharge port 23 with the lid 33, and the stirring gas supply source 57 is activated, and the valve 55 is appropriately released to eject a gas having a predetermined pressure from the nozzle 53. This gas spreads throughout the ventilation chamber 51 and is supplied into the processing tank 2 as a stirring gas A that passes through the mesh of the ventilation body 52 and eventually reaches a predetermined wind speed. This wind speed will be described in detail later.

Next, while starting the motor M and rotating the rotary blade 27, the workpiece W is thrown into the processing space S from the charging port 22a.
Then, in the processing tank 2, as shown in FIG. 4A, the rotary blade 27 causes a circulation flow to occur in the entire workpiece W, and the workpiece W is guided by the spiral rotary blade 27. However, it rises along the inner wall of the treatment tank inner plate 20 and then falls in the direction of the rotating shaft 26.
At this time, since the rotary blade 27 is located near the lower end of the treatment tank 2 (near the aeration body 52), mixing, crushing, drying, cooling, and sterilization are performed on substantially the entire area of the workpiece W in the treatment space S. Etc. are effectively performed.

  At this time, the aeration gas 52 is supplied with the stirring gas A at a wind speed equal to or lower than the minimum fluidization wind speed of the workpiece W located in the treatment tank 2. The falling of the object W and the clogging of the ventilation plate 52 are prevented.

Although the rotary blade 27 is located near the lower end of the treatment tank 2 (near the ventilation body 52), the workpiece W positioned between the lowermost part of the rotary blade 27 and the lid body 33 (ventilation plate 52). Some of them are difficult to circulate.
Therefore, in the present invention, the stirring gas A is periodically set to a wind speed equal to or higher than the minimum fluidization wind speed, and the workpiece W on the aeration body 52 is caused by the stirring gas A as shown in FIG. It is taken in the workpiece W that has been fluidized and eventually circulated by the rotary blade 27 and moves upward.
The minimum fluidization wind speed is a critical value that allows the workpiece W on the aeration body 52 to flow in a state where a circulating flow is generated in the entire workpiece W by the rotary blades 27.

In this embodiment, as shown in FIG. 5, the supply is usually performed at a wind speed equal to or lower than the minimum fluidization wind speed, and the supply at the wind speed higher than the minimum fluidization wind speed is periodically performed in a pulsed manner. In FIG. 5, the minimum fluidization wind speed is indicated by a one-dot chain line.
In this embodiment, as a means for sending the stirring gas A in a pulsed manner, a valve 55 having an automatic drive mechanism capable of changing the opening degree is used, and the opening degree of the valve 55 is set at regular intervals by a timer (not shown). Was performed by an actuating means for opening a large opening. As an example, the pulse time was 0.1 second to 1 second, and the time between pulses was 20 seconds to 300 seconds.
In addition, when the stirring gas A equal to or higher than the minimum fluidization wind speed is continuously flowed, in the case of the workpiece W having a large specific gravity difference, the effect of classification due to the specific gravity difference is more than the effect of improving the mixing property by promoting fluidity. Appears and the mixing effect is reduced.
As described above, according to the present invention, the flow of the workpiece W positioned between the lower end portion of the rotary blade 27 and the vent 52 is prevented while preventing the workpiece W from being clogged with respect to the vent 52. By prompting, operations such as mixing, crushing, drying, cooling, and sterilization are effectively performed.

  Thereafter, after a predetermined time has passed, the lid 33 is moved away from the opening 32 while the rotary blade 27 is rotated, the opening 32 is opened, and the workpiece W is discharged.

DESCRIPTION OF SYMBOLS 1 Conical type mixing processing apparatus 2 Processing tank 20 Processing tank inner plate 21 Jacket outer body 21a Inflow pipe 21b Outflow pipe 22 Top plate 22a Input port 22b Exhaust port 23 Outlet port 24 Jama plate 25 Reducer 26 Rotating shaft 27 Rotating blade 3 Discharge Device 30 Casing 31 Bottom partition plate 32 Opening 33 Lid body 34 Bearing 35 Shaft 36 Gate arm 37 Bolt 38 Lever arm 39 Air cylinder 39a Rod 5 Stirring gas supply mechanism 51 Venting chamber 52 Ventilator 53 Nozzle 54 Air supply pipe 55 Valve 56 Header 57 Stirring gas supply source 102 Processing tank 103 Discharge device 123 Discharge port 131 Bottom partition plate 132 Opening portion 133 Cover A Stirring gas F Flange M Motor R Rotary valve S Processing space V Valve body W Processed object

Claims (5)

  In an apparatus for performing any one or more of mixing, crushing, drying, cooling, and sterilization of an object to be processed by a rotary blade provided in an inverted conical processing tank, below the processing tank A discharge device that opens and closes the discharge port formed at the bottom of the treatment tank is attached, and the discharge device includes a bottom partition plate that partitions the discharge side of the treatment tank, and the bottom partition plate A conical mixing apparatus characterized in that an opening is formed in the lid and a lid for closing the opening is further provided, and the lid is provided with a stirring gas supply mechanism.   The lid body is formed so as to cover an opening at an upper part of the ventilation chamber with a gas, and a nozzle for supplying a stirring gas is provided in the ventilation chamber. 2. The conical mixing treatment apparatus according to 1.   3. The conical mixing treatment apparatus according to claim 2, wherein the ventilation body is constituted by a sintered wire mesh.   Using the apparatus according to claim 1, 2, or 3, the bottom partition plate and the lid in the discharge device function as a bottom surface of the treatment tank, and the object to be processed located on the lid from the stirring gas supply device An operation method for a conical mixing treatment apparatus, wherein a stirring gas is supplied.   The stirring gas is normally supplied at a wind speed equal to or lower than the minimum fluidization wind speed of the workpiece to be processed in the processing tank, and periodically supplied at a wind speed higher than the minimum fluidization wind speed. The operation operation method of the conical mixing treatment apparatus according to claim 4.

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