JP2008089236A - Heating treatment device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating treatment device of a structure capable of properly eliminating the powder and granular material P attached to a bag filter. <P>SOLUTION: Pulse jets are jetted in the diameter direction to an outer peripheral face of the bag filter 151 for collecting the powder and granular material from a high-temperature gas at a cylindrical inner peripheral face. Thus the powder and granular material can be properly eliminated by the pulse jets even when the powder and granular material is attached to the inner peripheral face of the bag filter 151. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a heat treatment apparatus for heat-treating a granular material, and more particularly to a heat treatment apparatus that collects the granular material from a high-temperature gas to be exhausted with a bag filter.

  Currently, a heat treatment apparatus that stirs and heats a granular material with a high-temperature gas is used for sterilization or drying of the granular material made of food. One conventional example of such a heat treatment apparatus will be described below with reference to FIG.

  The heat processing apparatus 10 illustrated here includes a processing apparatus main body 12 in which a conical processing chamber 11 having a cylindrical upper part and a sharp lower part is formed in a lower part, and a gas generation unit that generates a high-temperature gas G having a predetermined temperature. (Not shown), a granular material introducing portion 14 for introducing the granular material P into the processing chamber 11 from above, a gas introduction mechanism 15 for introducing the high temperature gas G into the processing chamber 11 from below, A plurality of cylindrical bag filters 20 installed above the interior of the processing chamber 11.

  In the heat treatment apparatus 10, the granular material P introduced into the processing chamber 11 from above is agitated by the high-temperature gas G injected from below. This high temperature gas G is exhausted through the bag filter 20 at the top of the processing chamber 11.

  For this reason, the granular material P is not exhausted together with the high temperature gas G. Note that a pulse jet is injected into the bag filter 20 in order to eliminate the powder P adhering to the surface of the bag filter 20.

Currently, there are various proposals for the above-described heat treatment apparatus (for example, see Patent Documents 1 and 2).
JP 2001-27659 A Japanese Patent Publication 47-49854

  In the heat treatment apparatus 10 described above, the granular material P is agitated by the high temperature gas G in the lower portion of the processing chamber 11, and the granular material P is recovered by the bag filter 20 from the high temperature gas G exhausted in the upper portion of the processing chamber 11. Yes.

  However, in the above-described heat treatment apparatus 10, a pulse jet is injected into the cylindrical bag filter 20 in the axial direction. For this reason, the granular material P adhering to the outer peripheral surface of the bag filter 20 cannot be excluded favorably.

  This invention is made | formed in view of the above subjects, and provides the heat processing apparatus which can exclude favorably the granular material adhering to a bag filter.

  The heat treatment apparatus of the present invention is a heat treatment apparatus for heat-treating powder particles, and a treatment apparatus main body in which a rotation-like treatment chamber whose axial center direction is substantially parallel to the vertical direction is formed, A gas generating unit that generates a high-temperature gas at a predetermined temperature, a granular material introduction mechanism that introduces granular material into the inside of the processing chamber, and a rotating body-like inner peripheral surface that is substantially the same diameter and substantially coaxial with the processing chamber. A bag filter disposed above the processing apparatus main body, and a jet injection mechanism that injects a pulse jet in a diameter direction on the outer peripheral surface of the bag filter.

  The filter unit of the present invention is a filter unit mounted on the heat treatment apparatus of the present invention, and has a rotating body-like inner peripheral surface that is substantially the same diameter and substantially coaxial with the processing chamber and is disposed above the processing apparatus main body. And a jet injection mechanism for injecting a pulse jet in the diameter direction on the outer peripheral surface of the bag filter.

  Therefore, in the heat treatment apparatus and the filter unit of the present invention, a pulse jet is jetted in the diametrical direction on the outer peripheral surface of the bag filter that collects the granular material from the high-temperature gas on the cylindrical inner peripheral surface. For this reason, even if a granular material adheres to the inner peripheral surface of a bag filter, this is excluded by a pulse jet.

  The various components of the present invention do not necessarily have to be independent of each other. A plurality of components are formed as a single member, and a single component is formed of a plurality of members. It may be that a certain component is a part of another component, a part of a certain component overlaps with a part of another component, or the like.

  In addition, the high temperature referred to in the present invention is a temperature heated sufficiently higher than the so-called normal temperature, and means a temperature in a predetermined range used for the heat treatment of the granular material. Similarly, high humidity is humidity that is humidified sufficiently higher than a normal atmosphere, and means a predetermined range of humidity used for heat treatment of the granular material.

  In the heat treatment apparatus and the filter unit of the present invention, a pulse jet is jetted in the diametrical direction on the outer peripheral surface of the bag filter that collects the granular material from the high-temperature gas on the cylindrical inner peripheral surface. For this reason, even if a granular material adheres to the inner peripheral surface of a bag filter, this can be favorably excluded by a pulse jet.

  An embodiment of the present invention will be described below with reference to FIGS. However, the same parts as those of the conventional example described above with respect to the present embodiment are denoted by the same names and symbols, and detailed description thereof is omitted.

  The heat treatment apparatus 100 of the present embodiment heats the granular material P. For this reason, as shown in FIG. 2, the heat treatment apparatus 100 includes a processing apparatus main body 110 in which a rotating body-like processing chamber 111 whose axial direction is substantially parallel to the vertical direction is formed, and a high-temperature gas G having a predetermined temperature. A gas generation unit 120 that generates gas, a granular material introduction mechanism 130 that introduces the granular material P into the processing chamber 111, and a high-temperature gas G that heats the granular material P is injected into the processing chamber 111. A gas injection mechanism 140, a bag filter 151 having an inner peripheral surface of a rotating body that is substantially the same diameter and substantially coaxial as the processing chamber 111 and disposed above the processing apparatus main body 120, and a diameter on the outer peripheral surface of the bag filter 151 A jet injection mechanism 160 that injects a pulse jet J in the direction.

  In more detail, the processing apparatus main body 110 is formed in a conical shape in which the upper portion of the processing chamber 111 is cylindrical and the lower portion is sharpened downward. At the sharp lower end of the processing chamber 111, a discharge port 112 for the granular material P is formed, and an opening / closing door 113 is installed there.

  Moreover, the gas production | generation part 120 produces | generates high-humidity high temperature gas G by inhaling surrounding air, heating and humidifying. For example, the gas generation unit 120 generates a high-temperature gas G having a high humidity of 150 ° C. to 250 ° C. by injecting a flame onto the surface of the stored water with a burner at an angle of 30 ° to 45 ° (not shown). ) In addition, such a gas production | generation part 120 is disclosed by Unexamined-Japanese-Patent No. 8-196424, for example.

  As shown in FIG. 2, an air supply pipe 131 of a granular material introduction mechanism 130 is piped to the gas generation unit 120 via a blower 132. Further, an air supply pipe 141 of the gas injection mechanism 140 is also connected to the gas generation unit 120 via the blower 142.

  However, a hopper 133 for introducing the granular material P is connected to the air supply tube 131 of the granular material introducing mechanism 130. Further, the air supply pipe 141 of the gas injection mechanism 140 is branched into three.

  And the granular material introduction mechanism 130 injects the granular material P with the high temperature gas G to the inner peripheral surface of the processing chamber 111 in a direction substantially parallel to the tangent and substantially horizontal. In addition, the gas injection mechanism 140 injects only the high temperature gas G on the inner peripheral surface of the processing chamber 111 in substantially the same direction as the tangent line and in the same rotational direction as the granular material introduction mechanism 130.

  As shown in FIGS. 2 to 4, the above-described air supply tube 131 of the granular material introduction mechanism 130 and the three air supply tubes 141 of the gas injection mechanism 140 are arranged on the inner peripheral surface of the cylindrical upper portion of the processing chamber 111. , Located in a spiral form from top to bottom.

  In addition, as shown in FIG. 2, the heat treatment apparatus 100 is provided with a filter unit 150 at the upper end of the processing apparatus main body 110. The filter unit 150 includes a bag filter 151 having a rotating body-like inner peripheral surface substantially the same diameter and substantially coaxial with the processing chamber 111 and disposed above the processing apparatus main body 110.

  More specifically, as shown in FIGS. 1, 5, and 6, the filter unit 150 includes a cylindrical support cage 152 that supports the bag filter 151 from the inside, and a diametrical direction on the outer peripheral surface of the bag filter 151. A jet injection mechanism 160 that injects a pulse jet J.

  The support cage 152 includes a pair of annular members 153 arranged on the top and bottom, and a plurality of support members 154 erected on the annular members 153. The jet injection mechanism 160 includes a pair of larger-diameter ring members 161 and 162 and a plurality of air supply pipes 163 provided upright on the ring members 161 and 162.

  Therefore, the plurality of air supply pipes 163 of the jet injection mechanism 160 are arranged at positions facing the outer peripheral surface of the bag filter 151 supported by the support cage 152. A plurality of injection holes 164 are formed in the plurality of air supply pipes 163 at positions facing the outer peripheral surface of the bag filter 151.

  Further, the annular member 162 below the jet injection mechanism 160 is formed in a hollow shape and communicates with the plurality of air supply pipes 163 inside. Further, as shown in FIG. 2, a jet generating unit 170 that generates a pulse jet J is piped to the annular member 162.

  The jet generation unit 170 periodically includes a compressor 171 that sucks ambient air and pressurizes it to a high pressure, a condenser 172 that accumulates pressurized high-pressure air, a release valve 173 that discharges the accumulated high-pressure air, and a release valve 173. A timer device 174 that is operated automatically.

  As shown in FIGS. 1, 5, and 6, the air supply pipe 175 of the jet generation unit 170 is branched into four, and is substantially parallel to the tangent to the annular member 162 below the jet injection mechanism 160. The pipes are equally spaced in the direction.

  In the above-described configuration, in the heat treatment apparatus 100 according to the present embodiment, the granular material P to be heat-treated is jetted together with the high temperature gas G onto the inner peripheral surface of the treatment chamber 111 in a direction substantially parallel to the tangent and substantially horizontal. As a result, the granular material P rotates inside the processing chamber 111 together with the high temperature gas G.

  For this reason, since the moving direction of the granular material P and the high temperature gas G does not conflict, the behavior of the granular material P by the high temperature gas G can be made uniform. Therefore, even a large amount of fine particles P can be uniformly heat-treated.

  In particular, the processing chamber 111 of the processing apparatus main body 110 is formed in a cylindrical shape. For this reason, the granular material P can be smoothly swung together with the high-temperature gas G, and can be gradually moved downward while swirling.

  Moreover, the lower portion of the processing chamber 111 is formed in a downwardly sharp conical shape, and a carry-out port 112 is formed at the lower end thereof. For this reason, it is possible to prevent a decrease in speed at the lower part of the swirling of the high temperature gas G due to the injection to the upper part of the processing chamber 111. Moreover, the heat-treated powder P can be easily and reliably carried out.

  Further, in the processing chamber 111, a plurality of gas injection mechanisms 140 are piped together with the granular material introduction mechanism 130. For this reason, it can heat-process, turning the granular material P favorably with the high temperature gas G injected to the process chamber 111 from several places.

  In addition, as shown in FIGS. 3 and 4, the granular material introduction mechanism 130 and the three gas injection mechanisms 140 are arranged at positions dispersed in the axial direction and the circumferential direction of the processing chamber 111. . For this reason, the granular material P can be uniformly swirled by the high temperature gas G throughout the interior of the cylindrical processing chamber 111, and the granular material P can be uniformly heated by the high temperature gas G throughout the interior of the processing chamber 111. can do.

  In particular, the gas injection mechanism 140 is located below the powder body introduction mechanism 130. For this reason, the granular material P which falls gradually as mentioned above can be heat-treated while being swirled favorably by the high-temperature gas G.

  Furthermore, the granular material introduction mechanism 130 and the three gas injection mechanisms 140 are piped in order from the upper side to the lower side in a spiral manner on the inner peripheral surface of the processing chamber 111. For this reason, the granular material P that gradually falls as described above can be uniformly heat-treated while being swirled evenly by the high-temperature gas G in the entire interior of the cylindrical processing chamber 111.

  Moreover, the gas generation unit 120 generates a high-humidity high-temperature gas G. For this reason, heat energy can be satisfactorily transmitted from the high-temperature gas G to the granular material P, and the granular material P can be heat-treated with high efficiency.

  Further, the processing chamber 111 functions as a cyclone mechanism. For this reason, the high temperature gas G and the granular material P can be favorably separated without preparing a dedicated cyclone mechanism separately from the processing chamber 111.

  Moreover, a bag filter 151 having a rotating body-like inner peripheral surface substantially the same diameter and substantially coaxial as the processing chamber 111 is installed at the upper end of the processing apparatus main body 110. For this reason, the granular material P can be satisfactorily recovered from the exhausted high temperature gas G without hindering the swirling of the high temperature gas G inside the processing chamber 111.

  In particular, since the high-temperature gas G swirls inside the cylindrical bag filter 151, the powder P hardly adheres to the inner peripheral surface of the bag filter 151. Further, a pulse jet J is jetted in the diameter direction by the jet jet mechanism 160 on the outer peripheral surface of the bag filter 151.

  For this reason, even if the powder P adheres to the inner peripheral surface of the bag filter 151, it is easily eliminated by the pulse jet J. Moreover, since the excluded granular material P inevitably falls into the processing chamber 111, it is not necessary to collect the granular material P excluded from the bag filter 151 by a dedicated mechanism.

  Moreover, the processing apparatus main body 110 and the bag filter 151 are integrally formed, and it is not necessary to install them separately and connect them with an exhaust pipe. For this reason, the granular material P does not adhere to the inside of the exhaust pipe, the entire structure is simple, and the occupied area can be reduced.

  The bag filter 151 is supported from the inside by a support cage 152. For this reason, even if the pulse jet J is injected to the outer peripheral surface as described above, the shape can be maintained well.

  In particular, the support member 152 of the support cage 152 and the air supply pipe 163 of the jet injection mechanism 160 are arranged at alternate positions. For this reason, the pulse jet J can be injected to the position where the bag filter 151 is stretched by the support member 154, and the powder P can be peeled off from the bag filter 151 satisfactorily.

  In addition, the jet injection mechanism 160 periodically injects the pulse jet J by the timer device 174. For this reason, the granular material P can be automatically peeled periodically from the bag filter 151. The bag filter 151 is detachably attached to the support cage 152. For this reason, the bag filter 151 can be easily replaced.

  The present invention is not limited to the present embodiment, and various modifications are allowed without departing from the scope of the present invention. For example, in the above embodiment, the upper portion of the processing chamber 111 is cylindrical and the lower portion is conical.

  However, the entire processing chamber 111 may be formed in a cylindrical shape or a conical shape. Furthermore, it is not impossible that the entire processing chamber is formed in a spherical shape, and the lower part is formed in a hemispherical shape.

  Further, since it is only necessary to form a rotating body that does not hinder the swirling of the granular material and the high-temperature gas as a whole, for example, the planar shape may be formed in a dodecagon shape or the like (any (Not shown).

  Moreover, in the said form, it illustrated that the jet injection mechanism 160 injects the pulse jet J regularly by the timer apparatus 174. FIG. However, as a matter of course, the jet injection mechanism 160 may be operated by manual operation or the like, or the jet injection mechanism 160 may be operated at a predetermined timing linked with the heat treatment.

It is a disassembled perspective view which shows the assembly structure of the filter unit of the heat processing apparatus of embodiment of this invention. It is a schematic diagram which shows the whole structure of a heat processing apparatus. It is a double view which shows the structure of the principal part of a heat processing apparatus. It is a perspective view which shows the structure of the principal part of a heat processing apparatus. It is a disassembled perspective view which shows the assembly structure of the principal part of a filter unit. It is a typical top view which shows the structure of a filter unit. It is a schematic diagram which shows the whole structure of the heat processing apparatus of one prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Heat processing apparatus 11 Processing chamber 12 Processing apparatus main body 13 Gas production | generation part 14 Granule introduction mechanism 15 Gas introduction mechanism 16 Exhaust pipe 17 Cyclone mechanism 18 Carrying out port 19 Opening / closing door 100 Heat processing apparatus 110 Processing apparatus main body 111 Processing chamber 112 Carrying Exit 113 Opening / closing door 120 Gas generation unit 130 Powder / particle introduction mechanism 131 Air supply pipe 132 Blower 133 Hopper 140 Gas injection mechanism 141 Air supply pipe 142 Blower 150 Filter unit 151 Bag filter 152 Support cage 153 Ring member 154 Strut member 160 Jet injection mechanism 161, 162 Ring member 163 Air supply pipe 164 Injection hole 170 Jet generation part 171 Compressor 172 Condenser 173 Release valve 174 Timer device 175 Air supply pipe G Hot gas J Pulse jet P Granule

Claims (8)

A heat treatment apparatus for heat-treating powder particles,
A processing apparatus main body in which a rotating chamber-like processing chamber having an axial direction substantially parallel to the vertical direction is formed;
A gas generating unit that generates a high-temperature gas of a predetermined temperature;
A granular material introduction mechanism for introducing the granular material into the processing chamber;
A gas injection mechanism for injecting the high-temperature gas for heat-treating the granular material into the processing chamber;
A bag filter having a rotating body-like inner peripheral surface substantially the same diameter and substantially coaxial with the processing chamber and disposed above the processing apparatus body;
A jet injection mechanism for injecting a pulse jet in the diameter direction on the outer peripheral surface of the bag filter;
A heat treatment apparatus.   2. The heat treatment apparatus according to claim 1, wherein the granular material introduction mechanism injects the granular material together with the high-temperature gas in a direction substantially parallel to a tangent and substantially horizontal to an inner peripheral surface of the processing chamber.   3. The heat treatment apparatus according to claim 2, wherein the gas injection mechanism injects the high-temperature gas to the inner peripheral surface of the processing chamber substantially in parallel with a tangent and in a horizontal direction in the same rotation direction as the granular material introduction mechanism.   The heat treatment apparatus according to claim 3, wherein the granular material introduction mechanism and the plurality of gas injection mechanisms are positioned in order in a spiral form from above to below on an inner peripheral surface of the processing chamber.   The heat treatment apparatus according to any one of claims 1 to 4, wherein the gas generation unit generates the high-temperature gas with high humidity.   The heat treatment apparatus according to any one of claims 1 to 5, wherein the treatment chamber is formed in a cylindrical shape.   The heat treatment apparatus according to any one of claims 1 to 6, wherein the bag filter is formed in a cylindrical shape. A filter unit mounted on the heat treatment apparatus according to any one of claims 1 to 7,
A bag filter having a rotating body-like inner peripheral surface substantially the same diameter and substantially coaxial with the processing chamber and disposed above the processing apparatus body;
A jet injection mechanism for injecting a pulse jet in the diameter direction on the outer peripheral surface of the bag filter;
Having a filter unit.

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