JP4625754B2 - Burning machine - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a flame maker for drying tea leaves using a burner.

  Tea produced in a tea factory is called rough tea, and it is finished tea that reaches the consumer's hands by finishing the rough tea. The firing step of heating and drying tea leaves is the most important step in the finishing process, and the aroma specific to tea is purified and the flavor is improved by this firing step.

  Well-known examples of this type of burning machine include batch-type rack type heating machines that heat while sending tea leaves to troughs that carry tea leaves arranged in a shelf, and rotary type heating machines that heat and dry using a rotating drum. It has been.

Patent Document 1, a tray installed tea leaves were placed al in multiple stages in a sealed machine frame is moved from the upper by a conveyor to the lower, by sending hot air from a heat source disposed beneath the machine frame Shown is a burning machine that heats and drys tea leaves.
Japanese Patent Laid-Open No. 08-054183, FIG.

  However, in such a case, the heat source for heating and drying is installed only in the lower part of the sealed machine frame with respect to the multi-stage tray, and the tea leaves cannot be heated evenly. It is difficult to adjust heat drying to any state.

  This invention is made | formed in view of such a point, and it aims at providing the heating machine which can heat-dry tea leaves equally and can perform arbitrary heat-drying.

A flame maker according to the present invention includes a trough having a groove through which tea leaves are conveyed, a feeder that supplies tea leaves to the troughs, a tea leaf feed mechanism that imparts vibrations for conveying tea leaves to the troughs, In a heating machine having a heat sink facing the bottom surface of the groove with a predetermined interval and having a burner for heating and drying the tea leaves flowing through the groove, the burner is a gas burner, and the heat sink is a ceramic plate The trough grooves are provided in a plurality of rows at a predetermined interval, and the width of the trough grooves is set between the width of the heat sink of the burner and the width of the heat sink 2.5 times. It is characterized by.

  According to the present invention, the burner has a planar shape (plate shape), and the width of the trough groove through which the tea leaves flow is between the width of the heat sink of the burner and 2.5 times the width thereof. Uniform drying can be performed by irradiating even heat.

  Embodiments according to the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a front view in which a part of a fire-extinguishing machine according to an embodiment of the present invention is cut away. FIG. 2 is a cross-sectional view taken along line A-A ′ of FIG. 1.

  This flame igniter is supported by a multistage frame 1 that is mainly formed in a shelf shape, a hopper 9 that is a tea leaf inlet provided on the upper stage of the multistage frame 1, and a predetermined interval in the vertical direction by the multistage frame 1. The upper trough 2, the middle trough 3, and the lower trough 4 through which the tea leaves flow, and the burners 5 that are disposed at positions facing the troughs 2 to 4 and heat and dry the tea leaves by far infrared rays are provided. .

  In addition, the electromagnetic feeder 17 which vibrates the bottom face of the hopper 9 is installed in this burning machine, and the tea leaves thrown into the hopper 9 are pushed out to the upper trough 2 by a certain amount by this vibration. Further, each trough 2 to 4 is provided with a tea leaf feeding mechanism 6 that feeds tea leaves by swinging troughs 2 to 4 described later. Further, an upper middle chute 10 that guides the tea leaves to slide down from the upper trough 2 to the middle trough 3, and a middle and lower chute 11 that guides the tea leaves from the middle trough 3 to the lower trough 4 are installed.

  By such a mechanism, the tea leaves are introduced from the hopper 9 and moved to the upper trough 2, the upper trough 2 is advanced from the Y direction to the X direction, the upper middle chute 10 is slid down, and the interrupting trough 3 is moved from the X direction to the Y direction. In the direction, the middle lower chute 11 is slid down, the lower trough 4 is moved from the Y direction to the X direction, and discharged to the outside of the flame retardant. During this movement, the tea leaves are dry-fired by the burners 5 facing the troughs 2-4. Moreover, the space | interval with the troughs 2-4 is adjusted for the burner 5 by the burner raising / lowering mechanism 8 mentioned later. The burner 5 includes a gas burner 5a and a ceramic plate 5b as a heat sink attached to the lower surface, and radiates far infrared rays through the ceramic plate 5b. By using such a planar gas burner 5, the tea leaves are uniformly dried through the ceramic plate 5b.

  FIG. 3 is an enlarged view of a main part around the upper trough 2 of the fire-ignition machine.

  In the trough 2, grooves 2a through which tea leaves are sent in the width direction are arranged in parallel in two rows at a predetermined interval, and a burner 5 is opposed to each groove 2a. In FIG. 1, two burners 5 are installed in series in the length direction of the trough 2, but this number is not particularly limited to two, and is matched to the length of the upper trough 2. What is necessary is just to determine the number of the burners 5 suitably. Similarly, the middle trough 3 and the lower trough 4 are each provided with two grooves 3a and 4a, and a burner 5 is provided so as to face each other.

  The upper trough 2 in which the two grooves 2a are formed in parallel can be formed by bending a single plate made of, for example, aluminum, or connecting metal plates having one groove. Here, the width of the groove 2a is desirably 2.5 times the width of the ceramic plate 5b of the burner 5, and more preferably set to be approximately equal to the width of the ceramic plate 5b of the burner 5. According to the experiments by the present inventors, it has been confirmed that the drying of the tea layer at both ends of the trough is insufficient when the width of the burner surface is smaller than 1 / 2.5 of the trough groove width. If the width of the burner surface exceeds the trough groove width, the heat of the burner cannot be effectively used. For example, if the width of the burner surface is about 100 mm, the trough groove width is preferably set to 100 to 250 mm. The reason why the width of the burner surface is set to about 100 mm is that the gas burner can be controlled to soft heat and is most suitable for drying tea leaves. In addition, a predetermined gap is provided between the grooves 2a so that the heat of the two burners does not interfere. The partition may be divided between two burners with stainless steel, aluminum plate, etc., but in this case, the temperature does not become uniform due to reflection on the partition plate. It is preferable. The distance between the two grooves is preferably 50 to 150 mm according to the experiments of the present inventors.

  The same applies to the grooves 3 a and 4 a of the middle trough 3 and the lower trough 4. In addition, the temperature sensor 16 is installed in the longitudinal direction center part of the groove | channels 2a, 3a, 4a which the troughs 2-4 have so that the front-end | tip part which detects temperature may become the height which protrudes from a tea leaf.

  FIG. 4 is an enlarged view of a main part showing the tea leaf feeding mechanism 6 of the heating machine.

  The tea leaf feeding mechanism 6 is installed rearward in the traveling direction of the tea leaves of the troughs 2 to 4. Here, the tea leaf feeding mechanism 6 connected to the upper trough 2 will be described as an example.

  A motor 18 is placed on the Y side end of the upper frame 1b in the multistage frame 1 via a bracket 19, and a rotary shaft 21 is provided via a bearing 21b. The motor 18 and the rotating shaft 21 are connected via a pulley 18a, a V belt 23, and a pulley 21a. Further, an eccentric sleeve 20 is provided on the outer periphery of the rotating shaft 21 in a state of being eccentric with respect to the rotating shaft 21. On the other hand, a connecting shaft 24 is provided on the Y-side end portion of the upper trough 2 via a locking member 17. The rotating shaft 21 and the connecting shaft 24 are connected via a connecting rod 22 that is a connecting member that converts rotational motion into rotational amplitude motion. The tea leaf feeding mechanism 6 for the troughs 3 and 4 has the same configuration.

  Accordingly, the rotation shaft 21 is synchronously rotated through the V belt 23 by the rotation of the motor 18, and this rotational motion is converted into a minute rotational amplitude motion of the connecting shaft 24 through the connecting rod 22. The tea leaves jump on the troughs 2 to 4 so as to jump by the minute rotational amplitude movement of the troughs 2 to 4. For this reason, it is desirable to install the troughs 2 to 4 horizontally. If the slope is added, the flow of tea will be good, but on average it will be difficult to flow, and the movement will rub more than the movement of tea. The speed at which the tea leaves are fed can be adjusted by changing the position of the eccentric sleeve 20 with respect to the rotating shaft 21. Further, as shown in FIG. 1, the troughs 2 to 4 are provided with leaf springs 7 that elastically hold the troughs 2 to 4 in the multistage frame 1 so as not to interfere with the movement of the tea leaf feed mechanism 6 in the direction of movement of the tea leaves. It is installed to incline forward and downward. The troughs 2 to 4 may be supported on the multistage frame 1 by coil springs.

  FIG. 5 is an enlarged view of a main part showing the burner lifting mechanism 8 of the fire-extinguishing machine.

  A motor 25 with speed reduction is placed on the multistage frame 1. The rotation shaft of the motor 25 is connected to the bevel gear mechanism 28 and is connected to the bevel gear mechanism 28 ′ via a synchronous shaft 27 that is rotatably held by a holding member 26. A screw shaft 29 of the bevel gear mechanism 28 orthogonal to the synchronization shaft 27 is rotatably held by a nut sleeve 30 fixedly held by the multistage frame 1 and screwed to the burner 5.

  Thereby, when the motor 25 rotates, the bevel gears 28 and 28 ′ rotate, and thereby the relative position between the screw shaft 29 and the burner 5 changes. Thereby, the burner 5 can be raised / lowered.

  In order to smoothly perform the operation of the burner elevating mechanism 8, each elevating mechanism 8 is provided with a guide mechanism 12 as shown in FIG. The guide mechanism 12 includes a guide plate 13 provided on the side frame 1a of the multistage frame 1 and slide bearings 15 installed on stays 14 extending on both side frames of the burner elevating mechanism 8. Thereby, the up-and-down operation of the burner 5 is guided and the up-and-down operation is stabilized.

  Further, only the burner lifting mechanism 8 installed on the burner 5 facing the lower trough 4 is installed below the burner 5 via the support shaft 31.

  Next, the operation of the fire-extinguishing machine configured as described above will be described.

The tea leaves thrown into the firer move from the upper trough 2 to the lower trough 4 while being heated and dried by the burner 5. Here, the temperature sensor 16 installed in the central part of the troughs 2 to 4 monitors the temperature between the tea leaves and the burner 5, and considers the temperature and the state of the tea leaves while considering the degree of heating and drying. adjust. Specifically, the heating and drying of the tea leaves can be adjusted by controlling the burner lifting mechanism 8 to adjust the distance between the burner 5 and the tea leaves, or by adjusting the heating power of the burner 5. In addition, it is preferable that a small amount of tea is poured thinly without unevenness, and the leaves and leaves are gradually ignited with low heat over time. For this reason, the tea leaves to be dried by heating are dried as thinly as possible. Specifically, the electromagnetic feeder 17 is placed on the upper side of the tea leaf so that the tea layer is thin enough that the tea leaf does not overlap on the troughs 2 to 4, that is, the bottom of the troughs 2 to 4 is visible and hidden from the tea layer. Supply to trough 2 . For this reason, it is desirable to provide the electromagnetic feeder 17 for each groove 2 a of the upper trough 2.

  The effect of the fire-extinguishing machine configured in this way will be described.

  By making the width of the burner 5 and the widths of the grooves 2a, 3a and 4a of the troughs 2 to 4 substantially equal, the heat of the burner 5 reaches the tea leaves evenly. Thereby, uniform heat can be irradiated to tea and uniform drying can be performed.

  Moreover, since the temperature sensor 16 installed in the central part of the troughs 2 to 4 measures the temperature of the portion slightly protruding upward from the tea layer not in contact with the tea layer, it flows even when the tea leaves are not flowing. Even if it is in a state, there is no difference in the set temperature, and heat drying of the tea leaf can be easily adjusted, so that a tea leaf in a desired state can be obtained.

  In this embodiment, the grooves 2a, 3a, and 4a installed in the troughs 2 to 4 are arranged in two rows. However, this is not intended to limit the number. If a burner is installed for each groove, any number may be used. Grooves can be installed in a number of rows.

  Further, in the present embodiment, the three-stage troughs 2 to 4 are installed, but this does not limit the number, and the effect of the present invention can be obtained even if the number is set to an arbitrary number.

  Moreover, you may install two or more temperature sensors 16 installed in the center part of troughs 2-4 in arbitrary places.

  Moreover, in the said embodiment, although the tea leaf delivery mechanism 6 as shown in FIG. 4 was provided in each trough 2-4 right and left alternately, these were put together into one of right and left, and pulleys 21a adjacent up and down are used as a timing belt. All the tea leaf feeding mechanisms 6 may be driven by one motor by connecting them and connecting the lowermost or uppermost pulley and one motor by a timing belt. In this case, the rotational phase of the tea leaf feed mechanism 6 at each stage is evenly shifted (for example, in the case of three troughs 2 to 4, by 120 °), the vibration of the entire apparatus is suppressed and the movement due to the vibration is performed. Can be prevented. With this configuration, only one motor is required regardless of the number of trough stages, so that cost can be reduced.

It is the front view which notched part of the fire-extinguishing machine which concerns on embodiment of this invention. It is A-A 'sectional drawing of FIG. It is a principal part enlarged view of the fire-ignition machine. Furthermore, it is the principal part enlarged view of the fire-ignition machine. Furthermore, it is the principal part enlarged view of the fire-ignition machine.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Multistage frame, 2 ... Upper stage trough, 3 ... Middle stage trough, 4 ... Lower stage trough, 5 ... Burner, 6 ... Tea leaf feeding mechanism, 7 ... Leaf spring, 8 ... Burner raising / lowering mechanism, 9 ... Hopper, 10 ... Upper middle chute 11 ... Middle lower chute, 12 ... Guide mechanism, 13 ... Guide plate, 14 ... Stay, 15 ... Slide bearing, 16 ... Temperature sensor, 17 ... Electromagnetic feeder, 18 ... Motor, 19 ... Bracket, 20 ... Eccentric sleeve, DESCRIPTION OF SYMBOLS 21 ... Rotary shaft, 22 ... Connecting rod, 23 ... V belt, 24 ... Connection shaft, 25 ... Motor, 26 ... Holding member, 27 ... Synchronous shaft, 28 ... Bevel gear mechanism, 29 ... Screw shaft, 30 ... Nut sleeve, 31 ... Support shaft.

Claims (6)

A trough with a groove through which tea leaves are transported;
A feeder that supplies tea leaves to this trough;
A tea leaf feed mechanism that imparts vibration for conveying tea leaves to the trough;
A burner having a heat dissipating plate facing the bottom surface of the trough groove with a predetermined interval, and a burner for heating and drying tea leaves flowing through the groove,
The burner is a gas burner, and the heat sink is a ceramic plate;
The trough grooves are provided in a plurality of rows at predetermined intervals,
The trough groove width is set between the width of the heat sink of the burner and 2.5 times the width of the heat sink.   The width of the trough groove is set to be approximately equal to the width of the heat sink of the burner. The fire-extinguishing machine according to claim 1 or 2, wherein a width of the trough groove is set to 100 to 250 mm. 4. The trough grooves are formed in a rectangular cross section and are provided in a plurality of rows at intervals of 50 to 150 mm so that heat of the burner does not interfere. 1. A fire-extinguishing machine according to item 1. The elevating mechanism which adjusts the space | interval of the bottom face of the groove | channel of the said trough, and the heat sink of the said burner by raising / lowering the said burner or the said trough, The any one of Claims 1-4 characterized by the above-mentioned. Burning machine. A temperature sensor that is provided at the center of the trough groove in the width direction and that detects the temperature of the slightly upper part of the tea leaves flowing through the groove ;
The feeder, tea leaves through the groove of the trough, so that the tea layer is thin enough as not to overlap each other in-groove, it claims 1-5, characterized in der Rukoto supplies to the trough 1. A fire-extinguishing machine according to item 1.

Images