JP5386145B2 - Cleaning method for reverse cone type spiral blade processing device and reverse cone type spiral blade processing device - Google Patents

Description

The present invention, mixing of the workpiece, crushing, drying, sterilization, relates to a reverse conical spiral wrap treatment cleaning method and inverted cone spiral wing processing apparatus of the apparatus for performing any one or more processing cooling is there.

Conventionally, an inverted conical spiral blade processing apparatus (apparatus) is used as an apparatus for mixing, crushing, drying, sterilizing, or cooling various foods, feeds, pharmaceuticals, chemicals, and the like.
This device arranges spiral blades in an inverted conical processing tank, and mixes or crushes, dries, sterilizes, and cools the object to be processed while stirring the processing tank by the spiral blades. .
After these treatments, the work to be processed is discharged from the treatment tank, but the work is attached to and remains on the inner surface of the treatment tank, the upper and lower surfaces of the spiral blade, the support shaft that supports the spiral blade, and the main shaft that rotates the spiral blade. To do.
As a method for removing such an adherent / remaining object to be treated, so-called pool washing is generally performed in which the entire cleaning tank is filled with a cleaning liquid.
However, since the reservoir cleaning fills the entire treatment tank, a large amount of cleaning liquid is used, and the load on the wastewater treatment facility for processing the used cleaning liquid is excessive.
As a method that does not wash every reservoir, there is a method of cleaning the apparatus D'by vertically moving the nozzle 6 'by retractable cleaning spray apparatus as shown in FIG. (For example, refer to Patent Document 1.)
However, in this method, since the nozzle 6 'is inserted into the gap between the rotary blades 3', cleaning cannot be performed while rotating the rotary blade 3 '. Further, since the nozzle 6 'and the stationary rotating blade 3' always have a predetermined positional relationship during cleaning, a portion (dead angle) where the cleaning liquid S 'does not reach directly is generated or ejected from the nozzle 6'. There is a problem that it is necessary to take a long cleaning time because the flowing water pressure of the cleaning liquid S ′ cannot be sufficiently utilized, and there is a problem that it takes time to move the nozzle 6 ′ by expanding and contracting.
Further, in Patent Document 2, since the rotor blade is taken out from the apparatus and cleaned, no blind spot is generated. However, in order to take out the rotor blade from the apparatus, a space is required above the apparatus, and the installation height of the apparatus is limited. It was a method that could not be applied.
Japanese Patent Laid-Open No. 2003-144889 JP 2006-122773 A

The present invention has been made in view of such a background, and the spiral blade is cleaned while the spiral blade is disposed in the inverted conical spiral blade processing apparatus, and in particular, the spiral blade and the back side of the support shaft that supports the spiral blade. Has been attempted to develop a novel reverse cone type spiral blade processing apparatus and reverse cone type spiral blade processing apparatus that can efficiently clean the surface.

That is, in the cleaning method for the inverted conical spiral blade processing apparatus according to claim 1, the spiral blade is disposed in the inverted conical processing tank, and the object to be processed is mixed, crushed, dried and sterilized while stirring the processed object by the spiral blade. In the method for cleaning an apparatus for performing any one or a plurality of processes of cooling, the spiral blade is fixed by a plurality of support shafts along the axial direction of the rotating shaft. are those made Te, also is a nozzle for injecting a cleaning liquid, are arranged in the conical portion of the processing vessel below the spiral wrap, while rotating the helical blade of the device, the lower surface of the single-thread ribbon from said Bruno nozzle and The spiral blade is cleaned by spraying the cleaning liquid toward the lower surface of the support shaft . At this time, the rotational speed of the spiral blade is varied in the range of 7 to 76 min ⁻¹ .
According to the present invention, since the spiral blade is rotated and cleaning can be performed using a nozzle disposed below the spiral blade, the cleaning liquid can be sprayed to a portion where the cleaning liquid is difficult to be directly sprayed. The cleaning liquid spreads over the entire spiral blade by the action of the flowing water pressure and the rotation of the spiral blade. Can do.

Further, the inverted conical spiral blade processing apparatus according to claim 2 is provided with a spiral blade disposed in an inverted conical processing tank, and the material to be processed is mixed, crushed, dried, sterilized, and cooled while the workpiece is stirred by the spiral blade. In the apparatus for performing any one or a plurality of treatments of each treatment, the spiral blade is formed by a tapered spiral single ribbon fixed by a plurality of support shafts along the axial direction of the rotation shaft, the nozzle for injecting a cleaning liquid, each within one pitch of the helical blades, are arranged in the conical portion of the treatment tank, while rotating the helical blade of the device, the lower surface and supporting Paragraph ribbon from said Bruno nozzle An inverter configured to be able to clean the spiral blade by spraying a cleaning liquid toward the lower surface of the shaft, and further to change the rotational speed of the spiral blade within a range of 7 to 76 min ^−1. as it characterized in that it provided for Is shall.
According to the present invention, the spiral blade disposed in the treatment tank is a single ribbon having a simple structure with a small number of parts, and the nozzles are disposed within one pitch of the spiral blade. It is possible to spray reliably toward the lower surface of the wing and the lower surface of the support shaft, thereby shortening the cleaning time and reducing the amount of cleaning liquid.
The above-described problems can be solved by using the requirements described in these claims as means.

  According to the present invention, since the cleaning liquid is ejected from the nozzle disposed below the spiral blade while rotating the spiral blade, a large amount of cleaning liquid is not required as in the case of pool washing, and the cleaning liquid is effectively accumulated in the spiral blade. It is possible to achieve efficient cleaning by reducing the amount of drainage and shortening the cleaning time. Moreover, it is not necessary to take out the spiral blade from the apparatus and perform cleaning.

For inverted cone spiral wrap treatment cleaning method and inverted cone spiral wing processing device of the apparatus of the present invention will be specifically described based on the illustrated embodiment. It should be noted that technical modifications can be made to the present embodiment within the scope of the technical idea of the present invention.

Hereinafter, the configuration of the inverted conical spiral blade processing apparatus according to the present invention will be described, and then the cleaning method for the inverted conical spiral blade processing apparatus according to the present invention will be described together with the operation mode of the present apparatus.
An embodiment of the configuration of an inverted conical spiral blade processing apparatus will be described in detail with reference to the drawings. FIG. 1 shows an inverted conical spiral blade processing apparatus D (apparatus D) according to an embodiment of the present invention. In the processing tank 1, an inverted conical shape and a spiral blade 3 are disposed in the main processing tank 1. In FIG. 1, the spiral blade 3 is a single ribbon 31 (ribbon 31).

  The reverse conical treatment tank 1 will be described. As shown in FIG. 1, this is a conical portion 1A formed by forming an appropriate metal material into an inverse conical shape, and a cylinder connected above the conical portion 1A. The processing tank 1 is formed by the part 1B, and the upper opening of the cylindrical part 1B is closed by the top plate 2. In order to heat or cool the workpiece W from the outer surface of the conical portion 1A or the cylindrical portion 1B with a heat medium or a refrigerant, although not shown, a jacket structure is provided on the outer surface of the conical portion 1A or the cylindrical portion 1B. Can be provided.

A top opening 2 is formed in the top plate 2, and a drive motor M and a reduction gear G are arranged on the top plate 2. The drive motor M is preferably driven by an inverter (not shown) so that the rotation speed can be changed.
Further, as shown in FIGS. 1 and 2, the top plate 2 is provided with an opening 22 into which the cleaning nozzle 6 can be inserted. At the stage of discharging the workpiece W and cleaning the workpiece W remaining in the processing tank 1, the cleaning nozzle 6 is inserted into the opening 22, and the cleaning liquid S is sprayed from the nozzle 6.
The top plate 2 is provided with a vortex breaker 4 composed of a curved flat plate 41 and a support shaft 42 that supports the main flat plate 41.
When drying or sterilization is performed, or when blowout from the inlet 21 when the workpiece W is introduced is suppressed, an air supply port, an exhaust port, or a steam supply is provided to the top plate 2 although not shown. A mouth or the like can be provided as appropriate.

The speed reducer G is connected to the rotating shaft 33 of the spiral blade 3 disposed in the device D.
The ribbon 31 of the spiral blade 3 is fixed by a plurality of support shafts 32 along the axial direction of the rotation shaft 33, and the ribbon 31 is attached to the end of the main support shaft 32 in a tapered manner. The spiral blade 3 is rotated by the drive motor M, and the workpiece W is lifted and stirred along the inner surface of the conical portion 1A by the ribbon 31 that rotates.

  As shown in FIG. 1, the conical portion 1A is provided with an opening 1A1 into which a cleaning nozzle 7 can be inserted. At the stage of discharging the workpiece W and cleaning the workpiece W remaining in the processing tank 1, the nozzle 7 is inserted into the opening 1 </ b> A <b> 1 and the cleaning liquid S is sprayed from the nozzle 7.

In this embodiment, there are three nozzles 7 to be inserted into the opening 1A1 as shown in FIG.
The first nozzle 7 is arranged in the opening 1A1 provided in the conical portion 1A within one spiral pitch of the ribbon 31 starting from the ribbon upper end 311 of the ribbon 31. One pitch is a range of 360 ° spiral rotation along the spiral curve formed by the ribbon 31.
More specifically, FIG. 1 is a view when the ribbon upper end 311 is located at the right end of the drawing, and the first nozzle 7 is located at a lower position corresponding to one pitch from the ribbon upper end 311. It is arranged slightly above the position.
In addition, like the nozzle head 71 of the first nozzle 7, in the case where it is arranged on the inner side (in the direction of the rotation axis 33) than the inclined surface formed by the inner surface of the conical portion 1A, the ribbon 31 is rotated as shown in FIG. In order to prevent contact with the nozzle head 71 at this time, the ribbon 31 has a structure in which a notch is provided in advance.

The second nozzle 7 arranged below is a lower position of one pitch or more from the ribbon upper end 311. In FIG. 1, the second nozzle 7 is a cone slightly above the lower position corresponding to two pitches. It is arranged in the opening 1A1 provided in the portion 1A. The second nozzle 7 is arranged outside the inclined surface formed by the inner surface of the conical portion 1A.
The third nozzle 7 disposed below is an opening 1A1 provided in a conical portion 1A which is at a position lower than the ribbon upper end 311 by two pitches or more and slightly above the ribbon lower end 312. Consists of. The third nozzle 7 is arranged outside the inclined surface formed by the inner surface of the conical portion 1A.
In the ribbon 31 in FIG. 1, the ribbon spiral is less than 3 pitches, so the ribbon lower end 312 is above the position corresponding to 3 pitches.

A discharge mechanism 5 is disposed in the discharge port 11 at the lower end of the conical portion 1A. The valve body 51 of the discharge mechanism 5 is opened from the discharge port 11 by the valve body driving device 52, and the workpiece W in the processing tank 1 is discharged.
The inverted conical spiral blade processing apparatus D of the present invention is configured as described above as an example.

Next, the cleaning method of the present invention will be described together with the operation mode of the inverted conical spiral blade processing apparatus D.
First, the nozzles 6 and 7 were removed from the apparatus D, and the openings 1A1 and 22 were provided with an inner cylinder (not shown) so that the workpiece W would not enter the inner surfaces of the openings 1A1 and 22. Insert the closing lid.
The discharge port 11 of the conical portion 1A is closed by the valve body 51 of the discharge mechanism 5, the workpiece W is loaded from the loading port 21 of the top plate 2, and the spiral blade 3 is rotated by the inverter, the drive motor M, and the speed reducer G. Then, any one or a plurality of processes of mixing, crushing, drying, sterilization, and cooling are performed while stirring the workpiece W.

  Specifically, the movement of the workpiece W will be described. When the workpiece W lifted by the rotation of the ribbon 31 reaches the ribbon upper end 311 of the ribbon 31, it collides with the curved flat plate 41 of the vortex breaker 4, It is guided by the curvature of the flat plate 41 and falls toward the rotating shaft 33 arranged at the center of the processing tank 1. The dropped workpiece W mainly moves toward the discharge port 11 side of the conical portion 1A and is repeatedly lifted by the ribbon 31 repeatedly, and is mixed during the cyclic stirring. Crushing, drying, sterilization, and cooling are performed.

After this processing is completed, the valve body 51 is opened by the valve body driving device 52, and the workpiece W is discharged from the discharge port 11. After a while, the workpiece W is not discharged from the discharge port 11, but inside the processing tank 1, the inner surface of the processing tank 1, the upper and lower surfaces of the ribbon 31, the upper and lower surfaces of the support shaft 32, the surface of the rotating shaft 33, the ceiling The workpiece W adheres and remains on the inner surface of the plate 2 (surface on the treatment tank 1 side) and the surface of the vortex breaker 4.
For this reason, once the rotation of the spiral blade 3 is stopped, the closing lid provided with the inner cylinder (not shown) is removed from the openings 1A1 and 22, and the nozzles 6 and 7 are inserted instead. 7 is connected to a cleaning liquid supply device (not shown). Subsequently, while rotating the spiral blade 3, at the same time, the cleaning liquid S is supplied from a cleaning liquid supply device (not shown) to the nozzles 6 and 7, and the cleaning liquid S is sprayed from the nozzle heads 61 and 71 to adhere to the processing tank 1. A cleaning step for washing away the remaining workpiece W is performed.
The to-be-processed object W and the cleaning liquid S that have been washed away are discharged out of the apparatus D through the opened discharge port 11.

Here, the nozzle 6 disposed on the top plate 2 injects the cleaning liquid S from above the ribbon 31 and the support shaft 32, but the nozzle 6 alone causes a portion (dead angle) where the cleaning liquid S does not reach directly. The bottom surface of the ribbon 31 and the bottom surface of the support shaft 32 hardly reach, or even if the cleaning liquid S wraps around, there is almost no effect of washing away the adhesion. However, since the cleaning liquid S is sprayed toward the lower surface of the ribbon 31 and the lower surface of the support shaft 32 from the nozzle 7 that rotates the spiral blade 3 and is disposed below the ribbon 31, the cleaning liquid S is not directly exposed to the portion. In addition, the cleaning liquid S can be sprayed, and in addition, the cleaning liquid S can be spread over the entire spiral blade 3 by the action of the flowing water pressure from the nozzle 7 and the rotation of the spiral blade 3.
Furthermore, the single-ribbon 31 has a simple structure with a small number of parts, and the nozzles 7 are arranged every one pitch of the spiral blade. Therefore, the cleaning liquid S is more reliably directed to the lower surface of the ribbon 31 and the lower surface of the support shaft 32. This can reduce the cleaning time and the amount of cleaning liquid.

Further, in the cleaning process, the rotational speed of the ribbon 31 is adjusted by an inverter and is varied in the range of 7 to 76 min ⁻¹ . By changing the number of rotations, the effect of splashing the cleaning liquid S by the ribbon 31 and the support shaft 32 or the effect of the cleaning liquid S re-spraying from the wet ribbon 31 and the support shaft 32 is increased or decreased, and the cleaning liquid S is transferred to the spiral blade 3. Has the effect of spreading. Here, if the rotational speed is too high, the frequency at which the cleaning liquid S is repelled by the ribbon 31 and the support shaft 32 increases, and the blind spot where the cleaning liquid S does not reach increases. Alternatively, the cleaning liquid S is weakened by the centrifugal force because the cleaning liquid S is circulated from the portion directly exposed to the cleaning liquid S to the side surface and the back surface. If the rotational speed is low, the frequency per unit time of the flowing water pressure applied to the ribbon 31 is reduced, and the effect of the re-scattering of the cleaning liquid S due to the rotation is reduced, requiring a longer cleaning time.

  In this embodiment, the nozzles 7 are arranged in three places. However, when the size of the apparatus is different, the performance of the nozzles is different, the amount of the cleaning liquid S is changed, or the flowing water pressure is changed. The number and position of the nozzles may be determined as appropriate within the scope of the technical idea of the present invention.

  In the present invention, the nozzle 7 for cleaning that can clean the lower surface of the spiral blade 3 and the lower surface of the support shaft 32 in particular while rotating the spiral blade 3 is provided with a conical portion 1A of the treatment tank 1 below the spiral blade 3. Inverted conical spiral blade processing apparatus D provided for the above, and an inverted conical spiral blade processing apparatus used for mixing, crushing, drying, sterilization, and cooling processes that require reduction of contamination and efficient cleaning It can be used as a cleaning method for D.

It is a side view which shows the external appearance of the inverted conical spiral blade processing apparatus which is one Example of this invention. It is the top view which looked at the reverse cone type spiral blade processing apparatus of FIG. 1 from the top. FIG. 2 is a sectional view taken along line XX in FIG. 1. It is a side view which shows the mode of washing | cleaning of the existing inverted cone type spiral blade processing apparatus.

D Reverse cone type spiral blade processing apparatus 1 Processing tank 1A Conical part 1A1 Opening 1B Cylindrical part 11 Discharge port 2 Top plate 21 Input port 22 Opening part 3 Spiral blade 31 Single ribbon 311 Ribbon upper end 312 Ribbon lower end 32 Support shaft DESCRIPTION OF SYMBOLS 33 Rotating shaft 3 'Rotating blade 4 Eddy current breaker 41 Flat plate 42 Support shaft 5 Discharge mechanism 51 Valve body 52 Valve body drive device 6 Nozzle 61 Nozzle head 7 Nozzle 71 Nozzle head W Processed object S Cleaning liquid M Drive motor G Reducer

Claims (2)

An apparatus in which a spiral blade is arranged in an inverted conical processing tank, and the processing object is mixed with, mixed, crushed, dried, sterilized, or cooled while stirring the workpiece by the spiral blade . In the cleaning method ,
The spiral blade is formed by a taper-shaped spiral ribbon fixed by a plurality of support shafts along the axial direction of the rotation shaft, and a nozzle for injecting a cleaning liquid is provided in a treatment tank below the spiral blade. are arranged in the conical portion, while rotating the helical blade of the device, which performs cleaning of the spiral wrap by spraying a cleaning liquid toward the lower surface of the lower surface and support shaft Paragraph ribbon from said Bruno nozzle, At this time, the method for cleaning the inverted conical spiral blade processing apparatus is characterized in that the rotational speed of the spiral blade is varied in a range of 7 to 76 min ⁻¹ .
In an apparatus in which a spiral blade is disposed in an inverted conical processing tank, and the processing object is mixed or crushed, dried, sterilized, or cooled while stirring the workpiece by the spiral blade. ,
The spiral blade is formed by a tapered spiral single ribbon fixed by a plurality of support shafts along the axial direction of the rotation shaft, and a nozzle for injecting a cleaning liquid is within one pitch of the spiral blade. in, are arranged in the conical portion of the treatment tank, while rotating the helical blade of the device, the injection and cleansed spiral wrap the cleaning liquid toward the lower surface of the lower surface and support shaft Paragraph ribbon from said Bruno nozzle An inverse conical spiral blade processing apparatus comprising an inverter configured to be able to perform and further capable of varying the rotational speed of the spiral blade within a range of 7 to 76 min ^−1. .