Processing tower

Abstract

This technology provides a way to reduce the burden and labor involved in replacing treatment agents. [Solution] The processing tower 1 comprises a column 2 filled with a processing agent A and a support device 4 that supports the column 2. The column 2 comprises a cylindrical body 6 having a first opening 12 at its first end 6a for filling with the processing agent A, a filter member 16 provided at the second end 6b of the cylindrical body 6 to hold the processing agent A inside the cylindrical body 6, and a support shaft 30 protruding from the outer surface 6c of the cylindrical body 6 in a direction perpendicular to the longitudinal direction of the cylindrical body 6. The support device 4 comprises a shaft support portion 36 that supports the column 2 via the support shaft 30 so that it can be inverted up and down around the support shaft 30.

Description

Technical Field

[0001] The present disclosure relates to a processing column.

Background Art

[0002] Patent Document 1 discloses a processing apparatus having a column filled with an ion exchange resin.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] The processing agent such as ion exchange resin filled in the above column may require regular replacement. Replacement of the processing agent includes a filling step, a discharging step, and a washing step. The filling step is a step of filling the column with the processing agent and compacting the same. The discharging step is a step of discharging the processing agent from the inside of the column. The washing step is a step of washing the inside of the column after the processing agent has been discharged.

[0005] The processing agent is usually a powder or granular material, and the handling of the processing agent is complicated, which has been a factor reducing the efficiency in each step. In particular, a filter member for holding the processing agent inside the column is provided at the bottom end of the column. When discharging the processing agent from the bottom end of the column, it is necessary to remove the filter member, which poses the problem that a large amount of labor and man-hours are required for replacing the processing agent.

Means for Solving the Problem

[0006] Embodiments of the present disclosure are a processing tower used for processing with a processing agent, comprising a column filled with the processing agent and a support device for supporting the column. The column comprises a cylindrical body having an opening at a first end for filling with the processing agent, a filter member provided at a second end of the cylindrical body for holding the processing agent inside the cylindrical body, and a support shaft protruding from the outer surface of the cylindrical body in a direction perpendicular to the longitudinal direction of the cylindrical body. The support device comprises a shaft support portion that supports the column via the support shaft so that it can be inverted up and down around the support shaft. [Effects of the Invention]

[0007] According to this disclosure, the burden and man-hours involved in replacing the treatment agent can be reduced. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a front view showing an example of a processing tower according to an embodiment. [Figure 2] Figure 2 shows the main components of the column. [Figure 3] Figure 3 is a perspective view showing a pair of first vibration exciters and fixing members. [Figure 4A] Figure 4A shows a portion of the column in the discharge process. [Figure 4B] Figure 4B shows a portion of the column in the discharge process. [Modes for carrying out the invention]

[0009] First, the details of the embodiment will be listed and explained. [Summary of the Embodiment] (1) Embodiments of the present disclosure are processing towers used for processing with a processing agent, comprising a column filled with the processing agent and a support device for supporting the column. The column comprises a cylindrical body having an opening at a first end for filling with the processing agent, a filter member provided at a second end of the cylindrical body for holding the processing agent inside the cylindrical body, and a support shaft protruding from the outer surface of the cylindrical body in a direction perpendicular to the longitudinal direction of the cylindrical body. The support device comprises a shaft support portion that supports the column via the support shaft so that it can be inverted up and down around the support shaft. With the above configuration, since the column can be inverted, by inverting the column so that the second end, where the filter member is provided at the bottom of the column, is at the top, the treatment agent can be discharged from the opening at the first end, and the treatment agent can be easily discharged without removing the filter member. As a result, the burden and labor involved in replacing the treatment agent can be reduced.

[0010] (2) In the processing tower described in (1) above, the column may further be equipped with an excitation mechanism that applies vibration to the cylindrical body. In this case, applying vibration to the cylindrical body when packing the treatment agent into the column allows vibration to be applied to the packed treatment agent, effectively compacting it. Also, applying vibration to the cylindrical body when discharging the treatment agent from the column can loosen any solidified treatment agent inside the column, allowing for efficient discharging. Furthermore, applying vibration to the cylindrical body when cleaning the inside of the column can effectively remove any treatment agent adhering to the inner surface of the column. As a result, the burden and labor involved in replacing the treatment agent can be further reduced.

[0011] (3) In the processing tower described in (2) above, the vibration mechanism may include a vibration device and a fixing member that detachably fixes the vibration device to the outer surface of the cylindrical body. In this case, the position of the vibration exciter can be changed as needed.

[0012] (4) In the processing tower of (2) or (3) above, when the vibration excitation mechanism includes a first vibration excitation device and a second vibration excitation device fixed to the outer surface of the cylindrical body, the position of the first vibration excitation device in the longitudinal direction of the cylindrical body may be on the first end side relative to the support shaft, and the position of the second vibration excitation device in the longitudinal direction of the cylindrical body may be on the second end side relative to the support shaft. In this case, the vibration excitation devices can be arranged on both sides in the longitudinal direction of the cylindrical body with the support shaft interposed therebetween, and vibration can be uniformly applied to the longitudinal direction of the cylindrical body.

[0013] (5) In the processing tower of (4) above, the distance between the first vibration excitation device and the support shaft in the longitudinal direction of the cylindrical body may be shorter than the distance between the second vibration excitation device and the support shaft in the longitudinal direction of the cylindrical body. In this case, the position of the second vibration excitation device in the longitudinal direction of the cylindrical body is closer to the end side of the cylindrical body than the position of the first vibration excitation device in the longitudinal direction of the cylindrical body. As a result, during processing, the second vibration excitation device can be arranged at a position close to the second end, which is oriented downward, leading to uneven distribution of the treatment agent and a higher degree of solidification, so that the solidified treatment agent in the column can be loosened more effectively.

[0014] Details of Embodiments Hereinafter, preferred embodiments will be described with reference to the drawings. Note that at least a part of each embodiment described below may be arbitrarily combined. Configuration of Processing Tower FIG. 1 is a front view showing an example of a processing tower according to an embodiment. In FIG. 1, the processing tower 1 is installed on an installation surface S. The processing tower 1 includes a column 2 and a support device 4. Note that FIG. 1 shows the column 2 in a state where the longitudinal direction thereof is along the vertical direction. The processing tower 1 is an apparatus for performing treatment using a treatment agent. The treatment agent is a powder or granular material, and is filled in the column 2. A fluid to be treated is supplied to the column 2. The fluid to be treated passes through the inside of the column 2. The treatment by the processing tower 1 is performed by the fluid to be treated passing through the inside of the column 2. Examples of the treatment agents include activated carbon, molecular sieves, chemical adsorbents, and ion exchange resins. The treatment tower 1 is used by these treatment agents for treatments such as adsorption, extraction, and ion exchange.

[0015] Figure 2 is a diagram showing main parts of the column 2. Figure 2 shows the column 2 in a disassembled state. Further, Figure 2 shows a cross-sectional view of main parts of the cylindrical body 6. The column 2 is a cylindrical elongated member. The column 2 includes the cylindrical body 6, a first lid 8, and a second lid 10.

[0016] As shown in Figure 2 and Figure 1, the cylindrical body 6 is a cylindrical member made of metal such as structural steel or stainless steel. The cylindrical body 6 has a first end portion 6a and a second end portion 6b. The first lid 8 is attached to the first end portion 6a. The second lid 10 is attached to the second end portion 6b. The cylindrical body 6 has a first opening 12 at the first end portion 6a. Further, a flange portion 6a1 extending along an edge of the first end portion 6a is provided on the first end portion 6a. As shown in Figure 2, the cylindrical body 6 has a second opening 14 at the second end portion 6b. Further, a flange portion 6b1 extending along an edge of the second end portion 6b is provided on the second end portion 6b.

[0017] The first lid 8 is a disk-shaped member made of metal such as structural steel or stainless steel. The first lid 8 is abutted against the flange portion 6a1 and fixed to the first end portion 6a. Thereby, the first lid 8 closes the first opening 12. The first lid 8 has an introduction port 8a. The introduction port 8a is provided to communicate the inside and outside of the column 2. The introduction port 8a is an inlet for a fluid to be treated that is supplied to the column 2.

[0018] The second lid 10 is a disk-shaped member made of metal such as structural steel or stainless steel. The second lid 10 is abutted against the flange portion 6b1 and fixed to the second end portion 6b. Thereby, the second lid 10 closes the second opening 14. The second lid 10 has a discharge port 10a. The discharge port 10a is provided to communicate the inside and outside of the column 2. The discharge port 10a is an outlet for the fluid to be treated that is supplied to the column 2.

[0019] Furthermore, as shown in Figure 2, the column 2 has a filter member 16. The filter member 16 is provided on the second end 6b side of the cylindrical body 6. The filter member 16 allows the fluid to be treated to pass through, but not the treatment agent A. Therefore, the treatment agent A is retained inside the cylindrical body 6. The filter member 16 is fixed to the second end 6b side by being fixed to the second lid 10 or by being sandwiched between the flange portion 6b1 and the second lid 10. Specifically, the filter member 16 is a sintered wire mesh. Note that a combination of perforated metal and filter paper can also be used as the filter member 16. The treatment agent A, which is to be packed inside column 2, is introduced into column 2 through the first opening 12 after the first lid 8 is removed. The introduced treatment agent A is held and packed inside the cylindrical body 6 by the filter member 16.

[0020] Furthermore, as shown in Figure 1, column 2 is further equipped with a vibration excitation mechanism 20. The vibration excitation mechanism 20 is a device fixed to the outer surface 6c of the cylindrical body 6 and for applying vibration to the cylindrical body 6. The vibration excitation mechanism 20 includes a plurality of (four in the illustrated example) vibration excitation devices 22 and a plurality of (two in the illustrated example) fixing members 24. The plurality of vibration excitation devices 22 include a pair of first vibration excitation devices 22a and a pair of second vibration excitation devices 22b. The plurality of fixing members 24 include fixing members 24 for the pair of first vibration excitation devices 22a and fixing members 24 for the pair of second vibration excitation devices 22b.

[0021] The pair of first vibration exciters 22a protrude from the outer surface 6c along a direction parallel to the support shaft 30. The position of the cylindrical body 6 of the pair of first vibration exciters 22a in the longitudinal direction is on the first end 6a side of the support shaft 30. The support shaft 30 is an axis provided in the column 2 and is supported by the support device 4. The support shaft 30 will be described later. Furthermore, the pair of second vibration exciters 22b also protrude from the outer surface 6c in a direction parallel to the support shaft 30. The position of the pair of second vibration exciters 22b in the longitudinal direction of the cylindrical body 6 is on the second end 6b side of the support shaft 30.

[0022] Figure 3 is a perspective view showing a pair of first vibration exciters 22a and a fixing member 24. Note that the pair of second vibration exciters 22b and the fixing member 24 have the same configuration as the pair of first vibration exciters 22a and the fixing member 24. Therefore, only the pair of first vibration exciters 22a and the fixing member 24 for the pair of first vibration exciters 22a will be described here.

[0023] The first vibration exciter 22a is cylindrical and is driven by compressed air supplied from the outside to generate vibrations. Inside the first vibration exciter 22a is a piston that moves in the axial direction of the first vibration exciter 22a. The piston reciprocates using compressed air. The first vibration exciter 22a generates vibrations through this reciprocating motion. The generated vibrations cause the entire first vibration exciter 22a to vibrate. Therefore, the vibrations generated by the first vibration exciter 22a are transmitted to the member to which the first vibration exciter 22a is attached.

[0024] The fixing member 24 is a band-shaped member formed in an annular shape. The fixing member 24 is wrapped around the outer surface 6c of the cylindrical body 6. The fixing member 24 has a first surface 24a facing radially outward and a second surface 24b facing radially inward. A pair of first vibration exciters 22a are fixed to the first surface 24a of the fixing member 24. The pair of first vibration exciters 22a are arranged so as to be aligned along radial lines passing through the centers of the fixing member 24. The first surface 24a includes a fixed surface 24a1 to which a pair of first vibration exciters 22a are fixed. The second surface 24b includes a contact surface that abuts against the outer surface 6c of the cylindrical body 6.

[0025] The fixing member 24 includes a first strip-shaped portion 26, a second strip-shaped portion 27, and a pair of connecting members 28. The first strip-shaped portion 26 and the second strip-shaped portion 27 are members formed in a semicircular shape using metal strips such as steel plates or aluminum alloys. The pair of connecting members 28 include bolts and nuts, and connect both ends of the first strip-shaped portion 26 and both ends of the second strip-shaped portion 27. When the first strip portion 26 and the second strip portion 27 are combined and wrapped around the cylindrical body 6, a predetermined gap is formed between both ends of the first strip portion 26 and both ends of the second strip portion 27. The bolts and nuts of the connecting member 28 are tightened in a direction that narrows the predetermined gap. As a result, the fixing member 24 tightens the cylindrical body 6 in the radial direction and is detachably fixed to the cylindrical body 6. Therefore, the position of the vibration device 22 can be changed as needed.

[0026] In this manner, the fixing member 24 is interposed between the vibration exciter 22 and the outer surface 6c of the cylindrical body 6, fixing the vibration exciter 22 to the outer surface 6c of the cylindrical body 6. The vibration exciter 22 applies the vibrations it generates to the cylindrical body 6 via the fixing member 24.

[0027] As shown in Figure 1, column 2 further has a support shaft 30. The support shaft 30 is located at the longitudinal center of the cylindrical body 6. The support shaft 30 includes a pair of shaft bodies 31. The pair of shaft bodies 31 are aligned along an axis C2 perpendicular to the center line C1. The center line C1 is a line that passes through the radial center of the cylindrical body 6 and is parallel to the longitudinal direction of the cylindrical body 6. The axis C2 passes through the radial centers of the pair of shaft bodies 31 and is parallel to the longitudinal direction of the pair of shaft bodies 31. The pair of shaft bodies 31 protrude from the outer surface 6c of the cylindrical body 6 in a direction perpendicular to the longitudinal direction of the cylindrical body 6. Therefore, the pair of shaft bodies 31 are provided as a single shaft that penetrates the cylindrical body 6. The support device 4 supports the column 2 via the support shaft 30.

[0028] The support device 4 comprises a shaft support section 36 and a rotation mechanism 40. The shaft support section 36 has a pair of bearing devices 37. The pair of bearing devices 37 are provided on the installation surface S. The pair of bearing devices 37 rotatably support the pair of shaft bodies 31 with respect to the installation surface S. Furthermore, the pair of bearing devices 37 support the pair of shaft bodies 31 so that the axis C2 is horizontal. As a result, the shaft support section 36 supports the column 2 so that it can be inverted up and down around the support shaft 30.

[0029] The rotating mechanism 40 has the function of rotating the column 2 in response to operational input from an operator. The rotating mechanism 40 includes a gearbox 42 and a handle 44. The handle 44 receives input from the operator. A drive belt 45 is wrapped between the handle 44 and the input shaft 46 of the gearbox 42. The rotational force of the handle 44 is transmitted to the input shaft 46 by the drive belt 45. The rotational force transmitted to the input shaft 46 is reduced by a gear housed in the gearbox 42 and output from the output shaft 47. The output shaft 47 is rotatably connected to one of the pair of shaft bodies 31 via a coupling 48. As a result, when an operator rotates the handle 44, the rotational force is transmitted to the shaft body 31 (support shaft 30) via the gearbox 42, rotating the column 2.

[0030] [Regarding the replacement of treatment agent A] Next, we will explain how to replace treatment agent A in column 2. The replacement process for treatment agent A in column 2 includes a filling process, a discharge process, and a washing process. When replacing treatment agent A in column 2 which is filled with treatment agent A, the following steps are performed in the order of discharge, washing, and refilling.

[0031] The discharge process is the process of discharging the treatment agent A from column 2 to the outside of column 2. Column 2, which is filled and compacted with treatment agent A and ready for use, is typically positioned with its first end 6a facing upwards. In the discharge process, first, as shown in Figure 4A, the first lid 8 is removed from the cylindrical body 6, and in its place, the treatment agent container 50 is attached to the cylindrical body 6. The treatment agent container 50 is a container for storing the treatment agent A, such as receiving and storing the treatment agent A discharged from the column 2.

[0032] Next, the operator operates the handle 44 to invert the column 2 so that the first end 6a is facing downwards, as shown in Figure 4B. As a result, the treatment agent A inside the column 2 is discharged out of the column 2 through the first opening 12. Thus, in this embodiment, since column 2 can be inverted, by inverting column 2 so that the second end 6b, which is the bottom side of column 2 and where the filter member 16 is provided, is at the top, the treatment agent A can be discharged from the first opening 12, and the treatment agent A can be easily discharged without removing the filter member 16.

[0033] Here, the treatment agent A used in the process may solidify due to compaction within column 2. Therefore, in the discharge process, multiple vibration devices 22 included in the vibration mechanism 20 are driven to apply vibration to the cylindrical body 6. This loosens the treatment agent A that has solidified within column 2, allowing the treatment agent A to be discharged efficiently.

[0034] The treatment agent A dispensed from column 2 is received by the treatment agent container 50 and stored in the treatment agent container 50. In this way, by replacing the first lid 8 with the treatment agent container 50 during the discharge process, the treatment agent A can be handled in a closed space. As a result, direct contact between workers and the treatment agent A can be suppressed, thereby further enhancing worker safety.

[0035] The washing process, which follows the discharge process, is a process of washing the inside of column 2 after the treatment agent A has been discharged. During the cleaning process, multiple vibration devices 22 included in the vibration mechanism 20 are driven to apply vibration to the cylindrical body 6. This effectively removes the treatment agent A adhering to the inner surface of the column 2 (cylindrical body 6). Furthermore, during the washing process, the washing solution can be introduced into column 2, and the column 2 can be rotated to perform the washing. In this case, it is not necessary to fill column 2 with the washing solution, and the inside of column 2 can be washed with a small amount of washing solution.

[0036] The packing process, which follows the washing process, involves filling and compacting the column 2 with treatment agent A. In the filling process, first, the operator operates the handle 44 to invert the column 2 so that the first end 6a is facing upwards. Next, the treatment agent container 50 or the first lid 8 attached to the first end 6a is removed, and unused treatment agent A is introduced into the column 2 through the first opening 12. The introduced treatment agent A is held inside the cylindrical body 6 by the filter member 16. Thus, the treatment agent A is filled into the column 2. The treatment agent A packed into column 2 is compacted. Compaction is performed by an operator applying direct pressure to the treatment agent A through the first opening 12. At this time, multiple vibration devices 22 included in the vibration mechanism 20 are driven to apply vibration to the cylindrical body 6. This allows vibration to be applied to the treatment agent A packed in the column 2, and the treatment agent A can be effectively compacted.

[0037] In addition, during the filling process, the treatment agent A may be filled using the treatment agent container 50. In this case, first, the operator operates the handle 44 to invert the column 2 so that the first end 6a is facing downwards. Next, the treatment agent container 50 or the first lid 8 attached to the first end 6a is removed. Then, unused treatment agent A is stored in the treatment agent container 50, and the treatment agent container 50 containing the unused treatment agent A is attached to the first end 6a. Next, the operator inverts the column 2 by manipulating the handle 44 so that the first end 6a is facing upwards. At this time, any unused treatment agent A in the treatment agent container 50 is introduced into the column 2. After the treatment agent A has been introduced, the treatment agent container 50 is removed. The following steps are the same as described above. In this case, the worker can introduce treatment agent A into column 2 without directly coming into contact with treatment agent A, thereby further improving work safety.

[0038] As described above, in this embodiment, since column 2 can be inverted, the treatment agent can be easily dispensed without removing the filter member 16. As a result, the burden and man-hours required for replacing the treatment agent A can be reduced. Furthermore, in this embodiment, since the column 2 is equipped with a vibration mechanism 20, applying vibration to the cylindrical body 6 can increase the efficiency of each process and further reduce the burden and man-hours required for replacing the treatment agent.

[0039] Furthermore, in this embodiment, the pair of first vibration devices 22a included in the vibration excitation mechanism 20 are fixed by the fixing member 24 to the first end 6a side of the support shaft 30, as described above. The pair of second vibration devices 22b are fixed by the fixing member 24 to the second end 6b side of the support shaft 30, as described above. This allows the vibration exciters 22 to be positioned on both sides of the cylindrical body 6 in the longitudinal direction, with the support shaft 30 in between, so that vibrations can be applied uniformly along the longitudinal direction of the cylindrical body 6.

[0040] Furthermore, as shown in Figure 1, the distance a between the first vibration device 22a and the support shaft 30 in the longitudinal direction of the cylindrical body 6 is shorter than the distance b between the second vibration device 22b and the support shaft 30 in the longitudinal direction of the cylindrical body 6. As a result, the position of the second vibration exciter 22b is closer to the end of the cylindrical body 6 compared to the position of the first vibration exciter 22a. In other words, the second vibration exciter 22b is positioned closer to the second end 6b.

[0041] When processing with treatment agent A, the second end 6b is at the bottom. Therefore, among the treatment agent A in column 2, the portion of treatment agent A closer to the second end 6b is more likely to solidify compared to other portions of treatment agent A. If the treatment agent A closer to the second end 6b solidifies, even if column 2 is inverted, the solidified treatment agent A may not be discharged from column 2 and may remain in the column 2 at the position close to the second end 6b. In this regard, as described above, the second vibration device 22b of this embodiment is positioned closer to the second end 6b, so even if the treatment agent A solidifies and remains in the column 2 near the second end 6b, the second vibration device 22b can more effectively loosen the solidified treatment agent A, and the treatment agent A remaining in the column 2 can be discharged from the column 2.

[0042] Furthermore, in this embodiment, when the outer diameter of the cylindrical body 6 is D (Figure 1) and the longitudinal dimension of the column 2 is L (Figure 1), it is preferable that the following formula is satisfied. L / D ≥ 1.5 In the case of column 2 that satisfies the above formula, the ability to invert column 2 reduces the workload and man-hours required for replacing the treatment agent A.

[0043] 〔others〕 It should be noted that the embodiments disclosed herein are illustrative in all respects and not restrictive. For example, in the above embodiment, the example shown is that the excitation mechanism 20 includes four excitation devices 22, but the excitation mechanism 20 only needs to have at least one excitation device 22. Furthermore, the excitation mechanism 20 may include five or more excitation devices 20. Furthermore, although the above embodiment illustrates a case where a pair of vibration exciters 22 are provided on a single fixed member 24, only at least one vibration exciter 22 is required on the fixed member 24, and more than one vibration exciter 22 may be provided. Also, although the example illustrates a case where the vibration exciters 22 are provided along a direction parallel to the support shaft 30, the vibration exciters 22 may be provided along a direction intersecting the support shaft 30.

[0044] Furthermore, although the above embodiment illustrates a case where the support shaft 30 is located at the longitudinal center of the cylindrical body 6, the position of the support shaft 30 may be offset from the longitudinal center of the cylindrical body 6.

[0045] The scope of the present invention is indicated by the claims, not in the sense described above, and is intended to include the meaning of equivalents to the claims and all modifications within the scope. [Explanation of Symbols]

[0046] 1 Processing Tower 2 columns 4 Support device 6 Cylinder 6a First end 6a1 Flange section 6b Second end 6b1 Flange section 6c External surface 8 1st lid 8a Inlet 10 Second lid 10a outlet 12. First opening 14. Second opening 16 Filter component 20 Vibration mechanism 22 Vibration Exciter 22a First vibration device 22b Second vibration device 24 Fixing member 24a 1st page 24a1 Fixed surface 24b 2nd side 26 First band-shaped section 27 Second band-shaped section 28 Connecting member 30 Support shaft 31 Axis body 36 Shaft support part 37 Bearing device 40 Rotation Mechanism 42 Gearbox 44 handle 45 Drive belt 46 Input axes 47 Output shaft 48 Couplings 50 Dispensing containers A Treatment Agent C1 center line C2 axis S Installation surface

Claims

1. A treatment tower used for treatment using a treatment agent, A column in which the processing agent is packed inside, The system comprises a support device for supporting the column, The aforementioned column is A cylindrical body having an opening at its first end for filling the interior with the aforementioned processing agent, A filter member provided at the second end of the cylindrical body for holding the processing agent inside the cylindrical body, The cylindrical body comprises a support shaft that protrudes from the outer surface of the cylindrical body in a direction perpendicular to the longitudinal direction of the cylindrical body, The support device includes an axial support portion that supports the column via the support shaft so that it can be inverted up and down around the support shaft. Processing tower.

2. The column further comprises an excitation mechanism that applies vibration to the cylindrical body. The processing tower according to claim 1.

3. The vibration mechanism comprises a vibration device and a fixing member that detachably fixes the vibration device to the outer surface of the cylindrical body. The processing tower according to claim 2.

4. The vibration mechanism includes a first vibration device and a second vibration device fixed to the outer surface of the cylindrical body. The position of the cylindrical body of the first vibration device in the longitudinal direction is on the first end side of the support shaft, The position of the cylindrical body of the second vibration device in the longitudinal direction is on the second end side of the support shaft. The processing tower according to claim 2.

5. The distance between the first vibration device and the support shaft in the longitudinal direction of the cylindrical body is shorter than the distance between the second vibration device and the support shaft in the longitudinal direction of the cylindrical body. The processing tower according to claim 4.

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