JP2018065594A - Agitating tank and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a stirring tank capable of suppressing the occurrence of cleaning failure when cleaning the inside of a tank body even if a baffle is provided inside the tank body. SOLUTION: A tank main body 12 having at least a cylindrical body portion 14 and a spherical bottom portion 16 is integrally provided on an inner surface of the body portion 14 with the axial direction of the tank main body 12 being the longitudinal direction. At least one baffle 50 projecting from the inner surface of the body 14 toward the axial center of the tank body 12 when viewed from the axial direction of the main body 12, and formed at one end and the other end in the longitudinal direction of the baffle 50, are formed in the tank. The inclined surfaces 52 and 54 that make the length Lo in the longitudinal direction on the protruding side of the baffle 50 shorter than the length Li in the longitudinal direction on the inner surface side of the body 14 when viewed from the direction orthogonal to the axial direction of the main body 12. The stirring tank 10 includes a glass lining layer 28 formed on the inner surface of the tank body 12 including the baffle 50 having inclined surfaces 52 and 54. [Selection diagram] Fig. 1

Description

  The present invention relates to a stirring tank having a baffle on the inner surface of a tank body and a method for manufacturing the same.

  A tank having a glass lining layer is widely used in the fields of pharmaceuticals, fine chemicals, and the like because of its excellent detergency and suppression of elution of metal ions.

  As a tank having a glass lining layer, a glass-lined reaction can is known in which a jacket containing a medium for heating or cooling a liquid in a metal can is provided on the outer surface of the metal can. (For example, refer to Patent Document 1).

  Inside this reaction can (tank), a hollow baffle (baffle plate) is disposed via at least a pair of connecting pipes. This reaction can communicates the internal space of the jacket and the internal space of the baffle so that the medium in the jacket can be circulated and supplied to the baffle, and the heat exchange efficiency can be improved. .

JP 2010-89008 A

  However, when the baffle is supported by the pair of connecting pipes, when cleaning the inside of the tank, a part of the surface of the baffle and the part of the inner surface of the tank facing each other between the pair of connecting pipes, In some cases, the cleaning liquid may not spread over a part of the surface of the connecting pipe facing vertically. That is, in the case of a tank having such a configuration, a cleaning failure may occur.

  Moreover, when forming a glass lining layer in the inner surface of the tank which has a baffle, it is necessary to heat to about 800 to 900 degreeC. Depending on the shape and structure of the baffle, the heat capacity of the baffle may increase, or heat may not be easily transmitted to the baffle. In that case, firing of the glass lining layer becomes difficult, and a homogeneous glass lining layer may not be obtained.

  Therefore, an object of the present invention is to obtain an agitation tank capable of suppressing the occurrence of poor cleaning when the inside of the tank body is cleaned even if the baffle is provided inside the tank body.

  Another object of the present invention is to provide a method for manufacturing an agitation tank in which heat can be easily transferred to a baffle when a glass lining layer is formed inside a tank body having a baffle.

  In order to achieve the above object, a stirring tank according to the present invention includes a metal tank body having at least a cylindrical body portion and a spherical bottom portion, and a cylinder body in which the axial direction of the tank body is a longitudinal direction. At least one metal baffle that is integrally provided on the inner surface of the tank portion and protrudes from the inner surface of the body portion toward the axial center of the tank body as viewed from the axial direction of the tank body, and one longitudinal end portion of the baffle And an inclined surface that is formed on the other end portion and that has a length in the longitudinal direction on the protruding side of the baffle shorter than a length in the longitudinal direction on the inner surface side of the body portion, as viewed from the direction orthogonal to the axial direction of the tank body, A glass lining layer formed on the inner surface of the tank body including a baffle having an inclined surface.

  In order to achieve the above object, a method for manufacturing a stirring tank according to the present invention includes a metal tank body having at least a cylindrical body and a spherical bottom, and a longitudinal direction of the tank body in the axial direction. And at least one metal baffle that is integrally provided on the inner surface of the body portion and that protrudes from the inner surface of the body portion toward the axial center of the tank body as viewed from the axial direction of the tank body, The length in the longitudinal direction on the protruding side of the baffle is shorter than the length in the longitudinal direction on the inner surface side of the body portion, as viewed from the direction perpendicular to the axial direction of the tank body. And a glass lining layer formed on an inner surface of a tank body including a baffle having an inclined surface, the baffle being formed in a hollow shape and covered with a baffle And a step of forming an opening in a part of the section.

  According to the present invention, even if a baffle is provided inside the tank body of the stirring tank, it is possible to suppress the occurrence of poor cleaning when the inside of the tank body is washed. Moreover, according to this invention, when forming a glass lining layer inside the tank main body which has a baffle, the manufacturing method of the stirring tank which can transmit heat to a baffle easily can be provided.

It is a sectional side view of the stirring tank which concerns on 1st Embodiment. It is a plane sectional view of the stirring tank concerning a 1st embodiment. It is explanatory drawing which shows the opening part formed in the trunk | drum covered with the baffle of the stirring tank which concerns on 1st Embodiment. (A) It is a plane sectional view which shows the modification (in the case of four) from which the number of the baffles of the stirring tank which concerns on 1st Embodiment differs. (B) It is a plane sectional view which shows the modification (in the case of six) from which the number of the baffles of the stirring tank which concerns on 1st Embodiment differs. (A)-(F) It is explanatory drawing which shows the modification of the opening part formed in the trunk | drum covered with the baffle of the stirring tank which concerns on 1st Embodiment. (A)-(D) It is explanatory drawing which shows the modification from which the shape of the upper end part and lower end part of the baffle of the stirring tank which concerns on 1st Embodiment differs. (A)-(C) It is a plane sectional view which shows the modification from which the cross-sectional shape of the baffle of the stirring tank which concerns on 1st Embodiment differs. (A)-(C) It is a plane sectional view which shows the modification from which the cross-sectional shape of the baffle of the stirring tank which concerns on 1st Embodiment differs. (A) It is a sectional side view which shows the modification from which the extension direction of the baffle of the stirring tank which concerns on 1st Embodiment differs. (B) It is a plane sectional view showing the modification from which the extension direction of the baffle of the stirring tank concerning a 1st embodiment differs. It is a sectional side view of the stirring tank which concerns on 2nd Embodiment. It is a plane sectional view of the stirring tank concerning a 2nd embodiment. It is a sectional side view of the stirring tank which concerns on 3rd Embodiment. It is a plane sectional view of the stirring tank concerning a 3rd embodiment. It is a sectional side view which shows the modification from which the length of the rod of the stirring tank which concerns on 3rd Embodiment differs. It is a sectional side view of the stirring tank which concerns on 4th Embodiment. It is a plane sectional view of the stirring tank concerning a 4th embodiment. (A) It is side sectional drawing which shows the modification from which the shape of the rib of the stirring tank which concerns on 4th Embodiment differs. (B) It is a plane sectional view showing the modification from which the shape of the rib of the stirring tank concerning a 4th embodiment differs. (A) It is a sectional side view which shows the modification from which direction of the rib of the stirring tank which concerns on 4th Embodiment differs. (B) It is a plane sectional view showing the modification from which the direction of the rib of the stirring tank concerning a 4th embodiment differs.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention can be implemented with appropriate modifications within the scope of the object of the present invention. In addition, a numerical range indicated using “to” in the present specification means a range including numerical values described before and after “to” as a minimum value and a maximum value, respectively. Furthermore, for convenience of explanation, FIGS. 1, 3, 5, 6, 9A, 10, 12, 14, 15, 17, 17A, and 18A. An arrow UP shown in FIG.

  1 is a side sectional view of the arrow shown in FIG. 2, FIG. 9A is a side sectional view of the arrow shown in FIG. 9B, and FIG. 10 is a side of the arrow shown in FIG. It is sectional drawing. Further, FIG. 12 is a side sectional view of the arrow shown in FIG. 13, FIG. 15 is a side sectional view of the arrow shown in FIG. 16, and FIG. 17 (A) is an arrow view shown in FIG. FIG. 18A is a side sectional view taken along the arrow shown in FIG. 18B.

<First Embodiment>
First, the stirring tank 10 according to the first embodiment will be described. As shown in FIGS. 1 and 2, the agitation tank 10 is made of a metal (for example, a hermetically sealed structure having at least a substantially cylindrical body portion 14, a substantially spherical bottom portion 16, and a top portion 18). (Stainless steel) tank body 12 is provided. An insertion port 20 for inserting a stirring member 40, which will be described later, into the tank body 12 is formed in the approximate center of the top portion 18 of the tank body 12. The insertion port 20 can be opened and closed by a lid 21. It is configured.

  In addition, a supply port 22 for supplying a chemical solution or the like to the inside of the tank body 12 is formed in a part of the boundary portion between the body portion 14 and the top portion 18 of the tank body 12. The lid 23 can be opened and closed. In addition, a discharge port 24 for discharging a chemical solution or the like supplied to the inside of the tank main body 12 is formed at the center (axial center portion) of the bottom portion 16 of the tank main body 12, and the discharge port 24 is a lid portion 25. Can be opened and closed.

  Further, the tank body 12 is provided with a hollow jacket 30 that covers the body portion 14 of the tank body 12 and the bottom portion 16 excluding the discharge port 24 from the outside. A supply port 32 for supplying a cooling or heating gas or liquid is formed inside the jacket 30, and the supply port 32 is configured to be openable and closable by a lid (not shown).

  A discharge port 34 for discharging cooling or heating gas or liquid supplied to the inside of the jacket 30 is formed in the lower portion of the jacket 30, and the discharge port 34 is configured to be opened and closed by a lid portion (not shown). Has been. The cooling liquid or heating gas or liquid supplied to the inside of the jacket 30 causes the chemical liquid or the like supplied to the inside of the tank body 12 to exchange heat (cooled or heated) with the gas or liquid. It has become.

  A stirring member 40 is provided inside the tank body 12. The stirring member 40 is integrated with the columnar rotating shaft 42 extending in the axial direction (vertical direction) on the axial center of the tank body 12 and radially outward from the outer peripheral surface at the lower end portion of the rotating shaft 42. And a plurality of (for example, two) substantially flat blade portions 44 that are extended.

  The upper end portion of the rotating shaft 42 protrudes upward through the lid portion 21 that closes the insertion port 20, and the rotational driving force from the electric motor 48 supported by the frame 46 is applied to the upper end portion. It is configured to be transmitted. That is, the stirring member 40 is configured to be rotationally driven by the electric motor 48 and configured to be able to stir the chemical solution supplied to the inside of the tank body 12.

  The blade portion 44 of the stirring member 40 is a stirring blade that stirs the contents of the tank body 12. The shape of the wing | blade part 44 is not specifically limited, It can select according to the objectives of stirring, such as dispersion | distribution, melt | dissolution, and suspension. Examples of the shape of the blade portion 44 include a propeller blade, a paddle blade, a retracted blade, a turbine blade, and an anchor blade. In the present embodiment, a retreating blade is preferable, and a retreating blade having a notch around the rotating shaft 42 is particularly preferable (see FIG. 1).

  The blade portion 44 will be further described. The blade portion 44 extends so as to be orthogonal to the axial direction of the rotation shaft 42. The blade portion 44 is divided into an upper portion and a lower portion, the upper portion has a plane substantially parallel to the axial direction of the rotating shaft 42, and the lower portion is a retracted wing (see FIG. 1). The swept wing is formed by being bent in the opposite direction to the rotation direction (counterclockwise) of the rotating shaft 42 (see FIG. 2).

  Further, when the outer angle formed by the upper surface of the blade portion 44 and the lower surface (retreating wing) is the inclination angle (for example, the same as the inclination angle α described in JP-A-7-124456). The inclination angle is preferably 5 ° to 75 °, more preferably 10 ° to 60 °, and still more preferably 15 ° to 50 °.

  As shown in FIGS. 1 and 2, the inner surface (inner peripheral surface) of the body portion 14 constituting the tank body 12 has a substantially triangular prism shape in which the axial direction of the tank body 12 (body portion 14) is the longitudinal direction. The baffle 50 is integrally provided. More specifically, as shown in FIG. 2, the baffle 50, which is a baffle plate, integrally protrudes from the inner surface of the body portion 14 toward the axial center of the tank body 12 when viewed from the axial direction of the tank body 12. Are formed in a substantially triangular shape (more precisely, an isosceles triangle shape having a substantially right angle with the inner surface of the body portion 14).

  A flange portion 51 (see FIGS. 3 and 5) is formed integrally with the peripheral portion of the baffle 50. In other words, the baffle 50 is integrally projected on the inner surface of the barrel portion 14 by joining the flange portion 51 formed on the peripheral portion to the inner surface of the barrel portion 14 by arc welding or the like. ing. In addition, illustration of the flange part 51 is abbreviate | omitted in each figure other than FIG. 3, FIG.

  The material of the baffle 50 is not particularly limited. However, since the baffle 50 is joined (welded) to the inner surface of the tank body 12, it is preferably the same as the material of the tank body 12, and specifically, metal (for example, Stainless steel) is preferable. Further, since the tank body 12 is configured by joining (welding) the spherical bottom portion 16 to the cylindrical body portion 14, the tank body 12 has a connection line (welding line) (not shown). For example, when the spherical bottom portion 16 is welded to the cylindrical body portion 14, the tank body 12 has a weld line.

  In general, when the weld lines are formed so as to intersect with each other, defects are likely to occur at the intersections due to a change in metal material due to repeated heating. Therefore, it is preferable that the baffle 50 is joined (welded) only to the cylindrical body 14 so that the weld lines do not intersect. That is, the baffle 50 is disposed closer to the cylindrical body 14 than the welding line (connection line) between the cylindrical body 14 and the spherical bottom 16, and the welding line (connection line) is connected to the baffle 50. It is preferable to arrange in a position that does not straddle.

  Further, it is sufficient that at least one baffle 50 is provided on the inner surface of the body portion 14, and the number thereof is not particularly limited, but a plurality of baffles 50 are preferably provided at equal intervals. Specifically, about 2 to 8 baffles 50 are preferably provided on the inner surface of the body portion 14 at equal intervals, and more preferably 3 to 4 are provided at equal intervals.

  That is, as shown in FIG. 2, three baffles 50 are provided at equal intervals on the inner surface of the barrel portion 14, or four baffles 50 are equally spaced on the inner surface of the barrel portion 14 as shown in FIG. It is preferable to provide them individually. When four or more baffles 50 are provided, for example, as shown in FIG. 4B, when six baffles 50 are provided at equal intervals on the inner surface of the body portion 14, an apex angle θ2 described later is set. You may make it provide small (for example, 60 degrees).

  Further, as shown in FIG. 1, the baffle 50 has an upper end (longitudinal one end) and a lower end (longitudinal other end) as viewed from a direction perpendicular to the axial direction of the tank body 12. An inclined surface 52 and an inclined surface 54 are formed so that the length Lo in the longitudinal direction on the protruding side 50 is shorter than the length Li in the longitudinal direction on the inner surface side of the body portion 14.

  As shown in FIG. 1, when viewed from the direction orthogonal to the axial direction of the tank body 12, the inclination angle θ <b> 1 of the inclined surface 52 and the inclined surface 54 of the baffle 50 with respect to the horizontal direction is 30 ° to 60 °, respectively. Preferably it is 45 °. Further, the inclined surface 52 formed at the upper end portion of the baffle 50 is disposed below the upper end portion 30 </ b> A of the jacket 30.

  As shown in FIG. 2, when viewed from the axial direction of the tank body 12, the protruding height H of the baffle 50 can be appropriately selected according to the inner diameter of the tank body 12 and the stirring efficiency. The protruding height H of the baffle 50 is, for example, preferably 5% to 30% of the inner diameter (diameter) of the tank body 12, more preferably 5% to 20%, and 7% to 20%. Is more preferable, and 8% to 15% is particularly preferable.

  Specifically, the protrusion height H of the baffle 50 is preferably 50 mm to 300 mm, more preferably 50 mm to 200 mm, still more preferably 70 mm to 200 mm, and particularly preferably 80 mm to 150 mm. When the protruding height H of the baffle 50 is less than 50 mm, the stirring efficiency may be low. When the protruding height H of the baffle 50 exceeds 300 mm, the volume occupied by the baffle 50 in the tank body 12 increases and the volume that can be stirred decreases. There are things to do.

  The inner diameter of the tank body 12 is 600 mm to 3000 mm, preferably 1000 mm to 2500 mm, and more preferably 1000 mm to 1500 mm. Furthermore, the apex angle θ2 which is the end of the baffle 50 on the protruding direction side is set to 40 ° to 120 °, preferably 60 ° to 100 °.

  Further, the shapes of the inclined surface 52 and the inclined surface 54 formed respectively at the upper end portion and the lower end portion of the baffle 50 are not limited to the substantially triangular shape shown in FIG. May be. That is, the inclined surface 52 and the inclined surface 54 of the baffle 50 according to the present embodiment may be formed in a substantially fan shape, as shown in FIG.

  In addition, the inclined surface 52 and the inclined surface 54 of the baffle 50 according to the present embodiment may be formed in spherical shapes that bulge upward and downward, respectively, as shown in FIG. 6 (C) and FIG. 6 (D), when viewed from the direction orthogonal to the axial direction of the tank body 12, each has a chevron shape having ridges 52A and 54A along the vertical direction at the center. It may be formed.

  Further, the flat cross-sectional shape of the baffle 50 formed with the inner surface of the body portion 14 is not limited to the substantially triangular shape shown in FIGS. 2 and 4, and for example, the shape shown in FIGS. Good. That is, the baffle 50 according to the present embodiment has a rectangular shape in which the protruding direction is the longitudinal direction as shown in FIG. 7A, and the circumferential direction is the longitudinal direction as shown in FIG. 7B. It may be formed in a rectangular shape, or may be formed in a pentagonal shape as shown in FIG.

  Further, the baffle 50 according to the present embodiment may be formed in an arc shape as shown in FIG. 8 (A), or as shown in FIG. 8 (B) or FIG. 8 (C). You may form in the shape (what is called a saddle shape etc.) which consists of circular arc shape and linear shape. Furthermore, the baffle 50 according to the present embodiment is not limited to a shape extending along the axial direction of the tank body 12, and for example, as shown in FIG. You may form in the shape extended in the direction which inclines.

  As described above, the shape of the baffle 50 is not particularly limited as long as it is integrally provided on the inner surface (inner peripheral surface) of the body portion 14 constituting the tank body 12, but the inside of the baffle 50 is hollow (hollow). Is preferable. And as FIG. 3 shows, it is preferable that the opening part 26 which connects the internal space of the baffle 50 and the internal space of the jacket 30 is formed in a part of trunk | drum 14 covered with the baffle 50. As shown in FIG. .

  The opening portion 26 is a portion where a part of the body portion 14 covered with the baffle 50 is opened, but the opening portion 26 closed (closed) by an object or the like and the joined opening portion 26 are also included. , Included in the opening 26 in the present embodiment. The joined opening 26 means a state in which the opening 26 is closed by joining. Examples of joining include mechanical joining using rivets, bolts, nails, and the like, and adhesion or welding.

  It is preferable that at least two openings 26 are formed apart from each other in the longitudinal direction of the baffle 50. Considering the influence on the strength of the tank body 12 and the ease of processing, the openings 26 have a substantially circular shape and a substantially elliptical shape. It is preferable to be formed in a circular shape including. However, the number and shape of the openings 26 are not limited to those shown in FIG.

  The number of openings 26 is preferably 1 to 6, and more preferably 1 to 3 as shown in FIGS. 5 (A) and 5 (B). In addition to the circular shape described above, the shape of the opening 26 may be a substantially rectangular shape shown in FIGS. 5C to 5F or a quadrangular shape including a not-shown substantially square shape, and further a triangular shape not shown. Or polygonal shape. Further, the position where the opening 26 is formed is not limited to the illustrated position as long as it is within the region covered with the baffle 50.

  As shown in FIGS. 1 and 2, the inner surface of the tank body 12 (the trunk portion 14, the bottom portion 16, and the top portion 18) has a baffle 50 having inclined surfaces 52 and 54, an insertion port 20 and a supply port. The glass lining layer 28 is fused, including 22 and the outlet 24. That is, the stirring tank 10 is a glass-lined stirring tank.

  Glass lining is a composite technique for bonding glass to a metal surface, and the material of the glass lining layer 28 is glass. Specifically, a glass lining layer 28 made of a glass lining composition having excellent corrosion resistance is provided on the inner surface of the tank body 12 and has different properties from the glass lining layer 28 (it is in close contact with the metal material of the tank body 12). ) Bonded through a glass layer (not shown).

  The formation of the glass lining layer 28 is not particularly limited, and can be formed by a known method. For example, a glass lining composition 28 (a composition containing powdered glass or the like) is sprayed on the inner surface of the tank body 12 including the baffle 50 and baked (baked) at a high temperature of about 800 ° C. Can be made.

  The opening 26 has a function of reducing the heat capacity of the baffle 50 and a function of facilitating heat dissipation from the baffle 50 when the glass lining layer 28 is fired on the inner surface of the tank body 12 (particularly the baffle 50). Moreover, although the average thickness of the glass lining layer 28 is not specifically limited, 1 mm-3 mm are preferable, 1 mm-2 mm are more preferable, 1.2 mm-1.5 mm are still more preferable. For other glass linings, JIS R4301 can be referred to.

  The opening ratio of the opening portion 26 corresponds to the area of the opening portion 26 with respect to the area of the inner surface of the body portion 14 covered with the baffle 50. The aperture ratio is not particularly limited, but varies depending on the viewpoint. For example, from the viewpoint of the strength of the stirring tank 10, the opening ratio is preferably 10% to 70%, more preferably 10% to 60%, and still more preferably 10% to 50%.

  From the viewpoint of heat dissipation during the formation of the glass lining layer 28, the aperture ratio is preferably 30% to 100%, preferably 40% to 100%, and preferably 50% to 100%. Further preferred.

  In terms of the heat medium flow of the jacket 30, the opening ratio is preferably 30% to 100%, preferably 40% to 100%, and more preferably 50% to 100%.

  In terms of overall strength, including strength, heat dissipation during the formation of the glass lining layer 28, and the flow of the heat medium in the jacket 30, the aperture ratio is preferably 30% to 70%, preferably 40% to 60%. More preferably, it is more preferable that it is 50%.

  Next, the operation of the stirring tank 10 according to the first embodiment configured as described above will be described.

  As shown in FIGS. 1 to 3, the baffle 50 provided on the inner surface of the tank main body 12 (the inner surface of the body portion 14) of the stirring tank 10 has a flange portion 51 formed on the peripheral edge portion thereof. By being joined (welded) to the inner surface of the body 14, it protrudes integrally from the inner surface of the body portion 14. Therefore, the baffle 50 does not cause a gap or the like between the inner surface of the tank body 12 (the inner surface of the body portion 14).

  Therefore, the agitation tank 10 has no portion where the cleaning liquid is difficult to spread when cleaning the inside of the tank main body 12 (the cleaning liquid can be distributed over the entire inner surface of the tank main body 12), and the inside of the tank main body 12 is It can be cleaned easily and appropriately. That is, according to the agitation tank 10 according to the first embodiment, it is possible to suppress or prevent the occurrence of poor cleaning when the inside of the tank body 12 is cleaned.

  Further, when viewed from a direction orthogonal to the axial direction of the tank body 12, an inclined surface 52 is formed at the upper end portion of the baffle 50 so as to be inclined downward from the inner surface of the body portion 14 toward the axis of the tank body 12. . Therefore, when the inside of the tank body 12 is cleaned, it is possible to suppress or prevent the cleaning liquid from accumulating at the upper end portion of the baffle 50.

  Further, when viewed from a direction orthogonal to the axial direction of the tank body 12, an inclined surface 54 is formed at the lower end portion of the baffle 50, which is inclined upward from the inner surface of the body portion 14 toward the axis of the tank body 12. . Therefore, when the inside of the tank body 12 is cleaned, the cleaning liquid can be sufficiently and easily distributed to the lower end portion of the baffle 50.

  In addition, the internal space of the baffle 50 and the internal space of the jacket 30 are communicated with each other through an opening 26 formed in the trunk portion 14. Accordingly, the cooling or heating gas or liquid supplied to the inside of the jacket 30 can be supplied to the inside of the baffle 50.

  Thereby, heat exchange between the gas or liquid supplied to the inside of the jacket 30 and the chemical liquid or the like supplied to the inside of the tank body 12 can be promoted by the gas or liquid supplied to the inside of the baffle 50. That is, since the chemical solution or the like supplied to the inside of the tank main body 12 is directly stirred by the stirring member 40 and collides with the baffle 50, the heat exchange efficiency is improved.

  Further, since three to four baffles 50 are provided at equal intervals on the inner surface of the body portion 14, heat exchange efficiency is improved, the balance of the tank body 12 is stabilized, and generation of vibration is suppressed or prevented. The In addition, since the baffle 50 is integrally provided on the inner surface of the body portion 14, for example, it is not necessary to provide a separate baffle insertion port in the tank body 12, and in the case of a stirring tank in which the insertion port is provided in advance. The insertion port can be used as a supply port different from the supply port 22.

Second Embodiment
Next, the agitation tank 10 according to the second embodiment will be described. In addition, the same code | symbol is attached | subjected to the site | part equivalent to the said 1st Embodiment, and detailed description (a common effect | action is also included) is abbreviate | omitted suitably.

  As shown in FIGS. 10 and 11, in the agitation tank 10 according to the second embodiment, the inner surface of the tank body 12 that is offset from the center (axial center portion) of the bottom portion 16 protrudes into the tank body 12. A hollow cylindrical rod 36 is provided. The rod 36 has a function equivalent to that of the baffle 50, and is seen on the inner surface of the bottom portion 16, which is radially outer than the blade portion 44 of the stirring member 40, when viewed from the direction orthogonal to the axial direction of the tank body 12. The front end of the tank body 12 is integrally projected toward the axial center of the tank body 12 to a height position slightly exceeding the blade portion 44.

  The height of the rod 36 is not limited to the illustrated height. Further, at least one rod 36 may be provided on the bottom portion 16 of the tank body 12, but a plurality (for example, two) of rods 36 are preferably provided at equal intervals in the circumferential direction of the bottom portion 16 of the tank body 12. Furthermore, as shown in FIG. 11, it is preferable that the rod 36 is provided offset in the circumferential direction with respect to the baffle 50 when viewed from the axial direction of the tank body 12. According to this, when the chemical solution or the like supplied into the tank body 12 is stirred, the stirring efficiency is improved.

  Further, even if such a rod 36 is provided, no gap or the like is generated between the rod 36 and the inner surface of the tank body 12. Therefore, when the inside of the tank body 12 is cleaned, there is no place where the cleaning liquid is difficult to spread, and the inside of the tank body 12 can be cleaned easily and appropriately. That is, even in the case of the agitation tank 10 according to the second embodiment, it is possible to suppress or prevent the occurrence of poor cleaning when the inside of the tank body 12 is cleaned.

<Third Embodiment>
Next, the agitation tank 10 according to the third embodiment will be described. In addition, the same code | symbol is attached | subjected to the site | part equivalent to the said 1st Embodiment and 2nd Embodiment, and detailed description (a common effect | action is also included) is abbreviate | omitted suitably.

  As shown in FIGS. 12 and 13, in the agitation tank 10 according to the third embodiment, the second inner surface is offset from the center (axial center portion) of the bottom 16 of the tank body 12 to the inside of the tank body 12. A substantially hollow cylindrical rod (hereinafter referred to as “long rod”) 38 that protrudes longer than the rod 36 in the embodiment is provided.

  The long rod 38 also has a function equivalent to that of the baffle 50, and is formed on the inner surface of the bottom portion 16 radially outside the blade portion 44 of the stirring member 40 when viewed from the direction orthogonal to the axial direction of the tank body 12. The tip portion of the agitating member 40 is integrally protruded toward the axial center of the tank body 12 up to a height position close to the rotating shaft 42 of the stirring member 40 (approaching the degree of non-contact).

  Note that at least one long rod 38 may be provided on the bottom 16 of the tank body 12, but a plurality of long rods 38 are preferably provided at equal intervals in the circumferential direction of the bottom 16 of the tank body 12. As shown in FIG. 13, the long rod 38 is preferably provided offset in the circumferential direction with respect to the baffle 50 when viewed from the axial direction of the tank body 12. According to this, when the chemical solution or the like supplied into the tank body 12 is stirred, the stirring efficiency is improved.

  Further, even if such a long rod 38 is provided, a gap or the like is not generated between the long rod 38 and the inner surface of the tank body 12. Therefore, when the inside of the tank body 12 is cleaned, there is no place where the cleaning liquid is difficult to spread, and the inside of the tank body 12 can be cleaned easily and appropriately. That is, even in the case of the agitation tank 10 according to the third embodiment, it is possible to suppress or prevent the occurrence of poor cleaning when the inside of the tank body 12 is cleaned.

  Further, as shown in FIG. 14, the long rod 38 has an inner surface that is offset from the center (axial center portion) of the bottom portion 16 of the tank body 12, and a tip portion of the long rod 38 is a rotating shaft 42 (tank body 12 May be integrally projected up to a height position exceeding the axial center). Even in this case, the long rod 38 does not contact the rotating shaft 42.

<Fourth embodiment>
Next, the agitation tank 10 according to the fourth embodiment will be described. In addition, the same code | symbol is attached | subjected to the site | part equivalent to the said 1st Embodiment-3rd Embodiment, and detailed description (a common effect | action is also included) is abbreviate | omitted suitably.

  As shown in FIGS. 15 and 16, in the agitation tank 10 according to the fourth embodiment, the inner surface of the tank body 12 that is offset from the center (axial center portion) of the bottom portion 16 protrudes into the tank body 12. Hollow triangular columnar ribs 56 are provided. The rib 56 has a function equivalent to that of the baffle 50.

  The rib 56 is located on the inner surface of the bottom portion 16 on the radially outer side of the blade portion 44 of the stirring member 40 when the rib 56 is viewed from the direction orthogonal to the axial direction of the tank body 12. It is preferable that the height of the upper end portion 56A is integrally projected so as to be lower than the connection line (welding line).

  Further, at least one rib 56 may be provided on the bottom portion 16 of the tank body 12, but a plurality (for example, three) of ribs 56 are preferably provided at equal intervals in the circumferential direction of the bottom portion 16 of the tank body 12. Further, as shown in FIG. 16, it is preferable that the rib 56 is provided to be offset in the circumferential direction with respect to the baffle 50 when viewed from the axial direction of the tank body 12. According to this, when the chemical solution or the like supplied into the tank body 12 is stirred, the stirring efficiency is improved. The shape of the upper end portion 56A of the rib 56 shown in FIG. 16 may be flat or mountain-shaped.

  Further, even if such a rib 56 is provided, a gap or the like is not generated between the rib 56 and the inner surface of the tank body 12. Therefore, when the inside of the tank body 12 is cleaned, there is no place where the cleaning liquid is difficult to spread, and the inside of the tank body 12 can be cleaned easily and appropriately. That is, even in the case of the stirring tank 10 according to the fourth embodiment, it is possible to suppress or prevent the occurrence of poor cleaning when the inside of the tank body 12 is cleaned.

  Further, the shape of the rib 56 formed with the inner surface of the bottom portion 16 is not limited to the substantially triangular cross section shown in FIGS. 15 and 16 when viewed from the direction orthogonal to the axial direction of the tank body 12, for example, As shown in FIG. 17A, the cross section may be formed in a substantially quadrangular shape extending along the radial direction.

  That is, each rib 56 may be formed in a substantially hollow triangular prism shape that is substantially the same shape as the baffle 50. In this case, the blade portion 44 of the stirring member 40 is disposed above the ribs 56. Further, as shown in FIG. 17B, it is preferable that the rib 56 is also provided offset in the circumferential direction with respect to the baffle 50 when viewed from the axial direction of the tank body 12.

  Further, as shown in FIG. 18B, four ribs 56 may be provided when viewed from the axial direction of the tank body 12 and inclined in the same direction with respect to the radial direction. When each rib 56 has such a configuration, a vortex flow is more efficiently formed between the blades 44 of the stirring member 40, so that the chemical solution supplied to the inside of the tank body 12 is stirred. The stirring efficiency is further improved.

  Further, as shown in FIG. 18A, the blade portion 44 of the stirring member 40 is disposed above the ribs 56 when viewed from the direction orthogonal to the axial direction of the tank body 12. In addition, although the four baffles 50 shown by FIG. 18 are provided at equal intervals, the number of the baffles 50 may be three at equal intervals, and is not specifically limited.

  As mentioned above, although the stirring tank 10 which concerns on this embodiment was demonstrated based on drawing, the stirring tank 10 which concerns on this embodiment is not limited to the thing of illustration, and within the range which does not deviate from the summary of this invention. The design can be changed as appropriate. For example, the stirring tank 10 may include both the rod 36 of the second embodiment or the long rod 38 of the third embodiment and the rib 56 of the fourth embodiment.

  In addition, the rod 36 of the second embodiment and the long rod 38 of the third embodiment are configured to be formed at positions offset in the circumferential direction with respect to the baffle 50 when viewed from the axial direction of the tank body 12. It may be configured to be formed at the same position as the baffle 50. Similarly, the rib 56 according to the fourth embodiment is formed at a position offset in the circumferential direction with respect to the baffle 50 when viewed from the axial direction of the tank body 12, but is formed at the same position as the baffle 50. It may be configured as follows.

  Further, the stirring tank 10 according to the present embodiment may be a stirring tank in which the jacket 30 is not provided. However, in this case as well, the opening 26 is preferably formed for heat dissipation when the glass lining layer 28 is fused to the inner surface of the tank body 12 (particularly the baffle 50). Furthermore, the shape and the number of blade portions 44 of the stirring member 40 provided in the stirring tank 10 according to the present embodiment are not limited to the illustrated shape and number.

  Further, the baffle 50 in the present embodiment is not a glass-lined stirring tank, that is, a stirring tank (not shown) that is not subjected to glass-lining treatment on the inner surface of the tank body 12 and is simply made of stainless steel. Even in the case of, it is possible to apply. That is, also in this case, it is possible to suppress or prevent the occurrence of poor cleaning when the inside of the tank body 12 is cleaned.

<Manufacturing method of stirring tank>
Finally, a method for manufacturing the stirring tank 10 according to the present embodiment will be described. The method for manufacturing the agitation tank 10 according to the present embodiment includes the steps of forming the baffle 50 in a hollow shape and forming the opening 26 in a part of the body portion 14 covered with the baffle 50.

  According to this, when the glass lining layer 28 is formed (fired) on the inner surface of the tank body 12 having the baffle 50, heat is easily transmitted to the baffle 50, and heat is easily radiated from the baffle 50. Therefore, a homogeneous glass lining layer 28 can be obtained.

  The opening 26 is necessary before the glass lining layer 28 is formed (fired). However, the completed tank body 12 may be closed (may be closed). Examples of means for closing (closing) the opening 26 include joining means (mechanical joining using rivets, bolts, nails, adhesion, welding, etc.) in addition to means for closing (closing) with an object or the like.

  Moreover, in the manufacturing method of the stirring tank 10 which concerns on this embodiment, in order to form the homogeneous glass lining layer 28, it may further have the process of apply | coating a glass lining composition to the inner surface of the tank main body 12, and the process of baking. preferable.

DESCRIPTION OF SYMBOLS 10 Stirring tank 12 Tank main body 14 Trunk part 16 Bottom part 26 Opening part 28 Glass lining layer 30 Jacket 36 Rod 38 Long rod (rod)
50 baffle 52 inclined surface 54 inclined surface 56 rib

Claims (9)

A metal tank body having at least a cylindrical body and a spherical bottom;
The tank body has an axial direction as a longitudinal direction, and is integrally provided on the inner surface of the body portion, and protrudes from the inner surface of the body portion toward the axis of the tank body when viewed from the axial direction of the tank body. At least one metal baffle to
The length in the longitudinal direction on the protruding side of the baffle is the longitudinal direction on the inner surface side of the trunk portion, as viewed from the direction perpendicular to the axial direction of the tank body. An inclined surface that is shorter than the length of
A glass lining layer formed on the inner surface of the tank body including the baffle having the inclined surface;
A stirring tank comprising.   The stirring tank according to claim 1, wherein the baffle is formed in a hollow shape, and an opening is formed in a part of the body portion covered with the baffle.   The stirring tank according to claim 2, wherein at least two of the openings are spaced apart in the longitudinal direction of the baffle.   The stirring tank according to any one of claims 1 to 3, wherein the tank body has a hollow jacket that covers the tank body from the outside. The tank body has a hollow jacket that covers the tank body from the outside,
The stirring tank according to claim 2 or 3, wherein the opening communicates the internal space of the baffle and the internal space of the jacket.   The baffle is formed in a shape of a triangle, a quadrangle, a pentagon, or an arc shape with the inner surface of the body portion in a cross-sectional view as viewed from the axial direction of the tank body. The stirring tank according to any one of claims 1 to 5.   The stirring tank according to any one of claims 1 to 6, wherein at least one rod or rib projecting into the tank body is provided on an inner surface of the bottom portion of the tank body. A metal tank body having at least a cylindrical body and a spherical bottom;
The tank body has an axial direction as a longitudinal direction, and is integrally provided on the inner surface of the body portion, and protrudes from the inner surface of the body portion toward the axis of the tank body when viewed from the axial direction of the tank body. At least one metal baffle to
The length in the longitudinal direction on the protruding side of the baffle is the longitudinal direction on the inner surface side of the trunk portion, as viewed from the direction perpendicular to the axial direction of the tank body. An inclined surface that is shorter than the length of
A glass lining layer formed on the inner surface of the tank body including the baffle having the inclined surface;
A method of manufacturing a stirring tank comprising:
A method for manufacturing a stirring tank, comprising: forming the baffle in a hollow shape and forming an opening in a part of the body part covered with the baffle.   The manufacturing method of the stirring tank of Claim 8 which has the process of apply | coating the composition which forms the said glass lining layer to the inner surface of the said tank main body, and the process of baking.