JP2019070483A - Dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dryer capable of adjusting a feed amount of an object to be dried. A dryer is supported by a housing 2 to which hot air is supplied, a rotating shaft 3 provided in the housing 2 and extending in a predetermined direction D1, supporting means supported by the rotating shaft 3, and supporting means. The spiral inner blade 4 and the supply means for supplying the object to be dried into the housing 2 are provided. When the rotating shaft 3 rotates in the predetermined rotation direction D2, the inner blade 6 rotates integrally with the rotating shaft 3 and sends the object to be dried to the downstream side. The supporting means adjustably supports the spiral pitch P of the inner blade 6. [Selection diagram] Fig. 2

Description

  The present invention relates to a dryer for drying a material to be dried by hot air.

  BACKGROUND ART Conventionally, a dryer for drying materials to be dried such as grains, vegetables, and fresh okara has been proposed. For example, the cylindrical drying device disclosed in Patent Document 1 supplies hot air and a raw material from one end to the cylindrical main body to dry the raw material, and the dried raw material is taken out from the other end as a dried product. The cylindrical main body portion is provided with an inclined blade member that rotates with the rotating shaft, and the blade member scrapes the raw material to promote drying of the raw material, and the feed force to the other end side is used for the raw material It is given to.

Patent document 1: JP-A-2002-350057

  In the cylindrical drying device disclosed in Patent Document 1, the feed amount of the material by the blade member depends on the tilt angle of the blade member, but the tilt angle of the blade member is determined in advance, and the feed amount of the material is adjusted. I could not.

  In addition, the conventional cylindrical drier has a narrow access opening, which makes it difficult to clean the inside of the cylindrical drier, and there is a problem that part of the washing water is accumulated inside after the internal washing and the water can not be completely drained. The

  An object of the present invention is to provide a drier capable of adjusting the feed rate of the material to be dried.

  Another object of the present invention is to provide a drier capable of easily draining water.

  The dryer according to the present invention comprises a housing to which hot air is supplied, a rotary shaft provided in the housing and extending in a predetermined direction, a support means supported by the rotary shaft, and a spiral supported by the support means Inner blades and a supply means for supplying the material to be dried into the housing, and when the rotation shaft rotates in a predetermined rotation direction, the inner blades rotate integrally with the rotation shaft, and The material to be dried is fed downstream in the predetermined direction, and the support means adjustably supports the helical pitch of the inner blade.

  Further, a drainage port is provided on the bottom surface of the casing, the drainage port is located on the downstream side of the bottom surface in the predetermined direction, and the casing as a whole is sloped downward toward the downstream direction on the predetermined direction It is characterized by

  Furthermore, at least three inspection ports arranged in a zigzag form along the predetermined direction are provided on the circumferential surface of the housing.

  According to the dryer of the present invention, since the spiral inner blade is provided, the flow of the material to be dried can be promoted. In addition, since the helical pitch of the inner blades can be adjusted, the transport amount / transport speed of the object to be dried can be adjusted without changing the rotation amount of the rotary shaft.

  Further, a drainage port is provided on the downstream side of the bottom surface of the casing, and the casing as a whole is sloped downward toward the downstream side as a whole, so that drainage when cleaning the inside of the casing is satisfactorily performed. be able to.

  Furthermore, since at least three inspection ports arranged in a staggered manner along the predetermined direction are provided on the circumferential surface of the housing, the inside of the housing can be easily cleaned.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows the dryer which concerns on embodiment of this invention, (a) is a front view, (b) is an Ib-Ib line sectional view of (a). The longitudinal cross-sectional view explaining the internal structure of the drying apparatus with which the dryer shown in FIG. 1 is provided. III-III sectional view taken on the line of FIG. The schematic perspective view which shows the support structure of the inner blade | wing with which the drying apparatus shown in FIG. 2 is provided.

  Hereinafter, a dryer according to an embodiment of the present invention will be described with reference to the attached drawings. Referring to FIG. 1, the dryer 1 of the present embodiment is a through-flow rotary dryer, and includes a hot air generator 11, a material to be dried supply device (supply means) 12, and a drying device 13. The hot air generator 11 generates hot air and supplies it to the drying device 13. The material-to-be-dried supply device 12 includes a hopper 12 a for storing a material to be dried (not shown), and a transport device 12 b for transporting the material to be dried stored in the hopper 12 a to the drying device 13. . The material to be dried supplied to the drying device 13 is exposed to hot air, dried, discharged from the drying device 13 together with the hot air as a dried material, and separated and collected from the hot air by a cyclone not shown through the duct 14.

  Referring also to FIG. 2, the drying device 13 includes a bottomed cylindrical casing 2 extending in a predetermined direction D1. At one end side (upstream side) of the housing 2, a vent 21 to which hot air from the hot air generator 11 is supplied and a supply port 22 to which a substance to be dried is supplied from the material to be dried 12 are provided. On the other end side (downstream side), an exhaust port 23 communicating with the duct 14 is provided.

  The drying device 13 further includes a rotary shaft 3 provided inside the housing 2, a plurality of wheel members 4 supported by the rotary shaft 3 at predetermined intervals, and a plurality of outer blades 5 supported by the wheel members 4. And two spiral inner blades 6 supported by the outer blades 5. The rotation shaft 3 extends in a predetermined direction D1, and is rotationally driven in a predetermined direction (predetermined rotation direction) D2 by a driving unit (not shown).

  With reference to FIGS. 2 and 3, each wheel member 4 has a proximal end 41 to which the rotary shaft 3 is inserted and fixed, a plurality of connecting portions 42 radially extending from the proximal end 41, and a connecting portion And a ring-shaped rim portion 43 fixed to the tip of the ring 42. The outer blades 5 are arranged in parallel at predetermined intervals in the circumferential direction of the wheel member 4. Each outer blade 5 is a plate-like member extending in the predetermined direction D1 from the vicinity of the supply port 22 to the vicinity of the discharge port 23, and is spanned over a plurality of wheel members 4 and radially outward from the rim portion 43 It is fixed to extend out.

  Referring to FIGS. 2 and 4, each inner blade 6 has a spiral shape for approximately one turn, and both end portions 61 of the inner blade 6 have a specific one outer blade 5 (hereinafter referred to as “the outer blade 5”). They are respectively attached to both sides of the “support blade 50”. More specifically, the support blade 50 is provided with a long hole 51 extending in the predetermined direction D1. L-shaped mounting brackets 7 are attached to both end portions 61 of the inner blade 6, and long holes 71 extending in a direction D3 orthogonal to the predetermined direction D1 are formed in the mounting metal portion 7. The mounting bracket 7 is fixed to both surfaces of the support blade 50 by bolts 72 inserted into the long hole 71 and the long hole 51, whereby both ends 61 of the inner blade 6 are fixed to the support blade 50 via the mounting bracket 7. It is attached to both sides respectively.

  Therefore, by loosening the bolt 72, the end 61 of the inner blade 6 can slide along the long hole 51 in the predetermined direction D1, and is fixed at an arbitrary position by tightening the bolt 72. By adjusting the position of at least one of the end portions 61 of the inner blade 6 in this manner, the distance (that is, the helical pitch) P in the predetermined direction D1 between the end portions 61 can be adjusted. Further, a screw rod 8 is inserted through an intermediate portion of each of the inner blades 6 and is tightened and fixed by a pair of nuts 81. As shown in FIG. 2, the threaded rod 8 is supported at a position inside the outer blades 5 by a pair of wheel members 4 located on the upstream side, and reinforces the inner blades 6.

  In the present embodiment, the wheel member 4, the support blade 50 and the screw rod 8 function as a support means for supporting the inner blade 6.

  With this configuration, when the rotation shaft 3 rotates, the outer blades 5 and the inner blades 6 rotate integrally with the rotation shaft 3. When the outer blade 5 rotates, the material to be dried is scraped upward and stirred, and the material to be dried is uniformly exposed to the hot air by the stirring in this manner, and uniform drying is promoted. In addition, when the inner blade 6 rotates, the material to be dried is sent to the downstream side while being stirred, and excessive retention of the material to be dried can be prevented.

  Here, conveyance of the material to be dried to the downstream side is performed mainly by blowing off the material to be dried by the hot air. The material to be dried is dried as it goes downstream and becomes lighter, so it becomes easier to be transported by the hot air on the downstream side, but there is a limit to the transport by only the hot air on the upstream side where drying is not so advanced. In that respect, since the spiral inner blade 6 is provided in the present embodiment, it is possible to accelerate the conveyance of the material to be dried by the rotation of the inner blade 6. The inner blade 6 does not have to be provided in the entire predetermined direction D1 of the drying device 13. If the inner blade 6 is provided in the upstream region in the housing 2, that is, near the supply port 22 as shown in FIG. Promote a favorable flow of

  Each inner blade 6 has a spiral shape for approximately one turn, but as shown in FIG. 2, by arranging a plurality of inner blades 6 side by side in the predetermined direction D1, the spiral for a plurality of continuous turns as a whole A shape can be comprised and a to-be-dried material can be conveyed continuously.

  Referring to FIG. 2, the whole of the housing 2 is inclined downward toward the downstream side, and a drainage port 24 is provided on the downstream side of the bottom surface of the housing 2. Further, as shown in FIG. 1, three inspection ports 25, 26 and 27 are provided on the outer peripheral surface of the housing 2, and these three inspection ports 25 to 27 are staggered along the predetermined direction D1 in plan view It is arranged in a shape.

  When the inside of the drying device 13 is cleaned by draining the housing 2 toward the downstream side as a whole, drainage of the cleaning water can be easily performed via the drainage port 24. Further, by providing a plurality of inspection ports, the inside of the drying device 13 can be easily accessed, and the internal cleaning can be easily performed. The degree of inclination of the housing 2 may be about 0.5 ° to 1.0 °.

Thus, according to the dryer 1 of the present embodiment, since the spiral pitch P of the inner blade 6 is variable, the feed amount of the material to be dried without changing the rotation speed of the rotary shaft 3 and hence the inner blade 6 (Transport speed) can be easily adjusted.
Although the dryer 1 according to the embodiment of the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to the embodiment, and various changes and modifications may be made without departing from the scope of the present invention. It is possible.

  For example, although the two inner blades 6 are provided in the above embodiment, the number of the inner blades 6 is not limited to two, and may be one or three or more. In the above embodiment, both ends 61 of the inner blade 6 can be adjusted in position, but one of them can be fixed and only the other can be adjusted in position.

  In the above embodiment, one of the outer blades 5 is used as the support blade 50 for supporting the inner blade 6, but the support plate for supporting the inner blade 6 may be a separate member from the outer blade 5.

  Moreover, although three inspection ports were provided in the said embodiment, you may provide four or more. Even in this case, it is preferable that the plurality of inspection ports be provided in a zigzag form in a plan view along the predetermined direction D1. When the length in the predetermined direction D1 of the housing 2 is relatively short, the number of inspection ports may be two, but even in this case, the position of the inspection port is shifted in the predetermined direction D1. It is preferable to provide.

DESCRIPTION OF SYMBOLS 1 dryer 2 case 3 rotating shaft 4 wheel member 5 outer blade 6 inner blade 13 drying device 50 support blade P helical pitch

Claims (6)

A housing to which hot air is supplied;
A rotary shaft provided in the housing and extending in a predetermined direction;
Supporting means supported by the rotating shaft;
A helical inner blade supported by the support means;
And d) supplying means for supplying the material to be dried in the housing.
When the rotation shaft rotates in a predetermined rotation direction, the inner blades rotate integrally with the rotation shaft to deliver the material to be dried downstream in the predetermined direction,
The dryer, wherein the support means adjustably supports a helical pitch of the inner blade. The inner blade is supported by the support means by attaching both ends of the inner blade to the support means,
2. The dryer according to claim 1, wherein the helical pitch can be adjusted by shifting the mounting position of at least one of the both ends of the inner blade to the support means.   The dryer according to claim 1 or 2, wherein the inner blades have a spiral shape for approximately one turn, and the inner blades are arranged in a plurality along the predetermined direction. The support means includes a plurality of wheel members attached to the rotation shaft, and a plate member supported by being supported by the plurality of wheel members.
The inner blade is attached to the plate member,
The dryer according to any one of claims 1 to 3, wherein the plate member functions as an outer blade that scrapes the material to be dried. A drainage port is provided on the bottom surface of the housing, and the drainage port is located downstream of the bottom surface in the predetermined direction,
The drier according to any one of claims 1 to 4, wherein the casing as a whole is sloped downward toward the downstream side in the predetermined direction.   The peripheral surface of the said housing | casing is provided with the at least 3 inspection port arrange | positioned at zigzag form along the said predetermined direction in planar view. Dryer.

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