JP7295656B2 - Mixer with heating device - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Law Publisher: Aichi Electric Technical Report Editorial Board, Publication Name: Aichi Electric Technical Report, Issue Number: No. 39. Date of issue: March 16, 2018

TECHNICAL FIELD The present invention relates to a structure capable of improving heating efficiency in a mixer with a heating device.

2. Description of the Related Art Conventionally, there has been known a mixer that mixes powdered materials put into a rotating drum by rotating and swinging the rotating drum. In addition, a so-called mixer with a heating device is also known, in which an infrared heater is installed around the rotating drum, and the heat of the heater is used to heat and mix the powder material in the rotating drum (described below. See Patent Document 1).

Japanese Patent Publication No. 5-42295

FIG. 4 is a side view showing the structure of the mixer B with a heating device described in Patent Document 1 above. 5 is a front view of the mixer B. FIG.

Reference numeral 101 denotes a rocking table attached to a base 102 by a support shaft 103, and 104 a crank mechanism having one end connected to the rocking table 101. FIG.

Crank mechanism 104 is composed of links 107 a and 107 b having the other end connected to output shaft 106 of reduction gear 105 . to oscillate.

A rotary shaft 109 is rotatably attached to the rocking table 101 in the front-rear direction (horizontal direction in FIG. 4) via a bearing (not shown).

A second electric motor 111 rotates the rotating wheel 110 via a belt 112 (see FIG. 5), and a rotating drum 113 is rotatably mounted on the rotating wheel 110 . A pair of rocking rings 114 are attached in the circumferential direction near both ends of the rotating drum 113 in the longitudinal direction.

A rocking wheel 115 is mounted on the rocking table 101 below the rotating drum 113 in close proximity to the inner surface of the rocking ring 114. When the rocking table 101 rocks, one of the rocking wheels 115 contacts the rocking ring 114 to prevent the rotating drum 113 from sliding down from the rocking table 101 while maintaining the rotation of the rotating drum 113 .

A lower cover 116 is placed on the rocking table 101 and surrounds the rotating wheel 110 and the lower part of the rotating drum 113. An upper cover 117 is placed on the lower cover 116 and surrounds the rotating drum 113. . The upper cover 117 is open at positions corresponding to the rotary joint 119 attached to the left end cover 118 and the right end opening of the rotating drum 113 .

A heat insulating material 120 is attached to the inner surface of the upper cover 117 , and a heater 121 is attached to the inner side of the upper cover 117 . As shown in FIG. 5, a plurality of heaters 121 are attached from above to the sides of the rotating drum 113 .

Reference numeral 122 denotes a flow pipe that passes through the rotary joint 119 and supplies air or gas into the rotating drum 113; 123, a feed pipe that feeds liquid into the rotating drum 113 in the form of mist; It shows the protective pipe of the thermocouple that senses the material temperature inside.

Reference numeral 125 (see FIG. 4) denotes a support arm extending forward and upward (toward the upper right in FIG. 4) from the rocking table 101. At the tip of the support arm, a locking plate 126 is attached with a space therebetween. Rotation of the circulation pipe 122, the feed pipe 123, and the thermocouple protection pipe 124 passing through the rotary joint 119 is prevented by engaging the anti-rotation plate 127 attached to the lower portion of the circulation pipe 122 located outside the rotary joint 119. blocking it.

According to the mixer B with the heating device configured as described above, while the rotating drum 113 rotates and oscillates, the materials accommodated therein can be stirred and mixed while being heated by the heat of the heater.

4 and 5, the structure of the upper cover 117 covering the outer side of the rotating drum 113 is formed by the rotary joint 119 attached to the lid 118 at the left end of the rotating drum 113 and the opening at the right end. Since the corresponding positions are open, outside air flows between the upper cover 117 and the lower cover 116 through the openings at both ends, and the heating efficiency of the rotating drum 113 by the heater 118 is deteriorated.

This point becomes more conspicuous when the rotating drum 113 rocks like a seesaw.

Accordingly, an object of the present invention is to provide a structure of a mixer B with a heating device capable of improving the heating efficiency of the heater.

The invention according to claim 1 comprises a rotating wheel electrically driven on a rocking table, a substantially hollow cylindrical rotating drum rotating on the rotating wheel , and a heater disposed around the rotating drum for heating the rotating drum. , a pair of heat insulating covers that surround the outside of the rotating drum with an opening only at one end in the longitudinal direction of the rotating drum, and are arranged in the circumferential direction of the rotating drum provided with only one oscillating wheel below the oscillating drum, which contacts one of the oscillating rings and maintains the rotation of the rotating drum when the rotating drum oscillates between the oscillating rings. It is characterized by

According to the second aspect of the present invention, the heater according to the first aspect is attached to the inside of the heat insulating cover at a position extending laterally from the upper side of the rotating drum. It is characterized in that it is configured by attaching a reflector for efficient irradiation .

According to the first aspect of the invention, the rotary drum is provided with an opening only at one end in the longitudinal direction thereof, and is provided with a heat insulating cover that covers the outside of the rotary drum. It is possible to suppress the air warmed in the cover from escaping to the outside through the opening.

Further, according to the first aspect of the invention, since the structure is such that the oscillating wheel is provided between the pair of oscillating rings under the rotating drum, the heater can be mounted over a wide range from above to the side of the rotating drum. At the same time, it is possible to reliably prevent the rotating drum from sliding down from the oscillating table by means of one oscillating wheel.

According to the second aspect of the invention, the heater is attached to a position extending from the upper side to the side of the rotating drum, and the reflecting plate is provided around the heater for efficiently irradiating the rotating drum with the heat generated by the heater. With this configuration, the efficiency of heating the rotating drum by the heater can be improved.

1 is a side view showing a mixer with a heating device of the present invention; FIG. Fig. 2 is a rear view showing the mixer with a heating device of the present invention; Fig. 3 is an enlarged front view showing a heater and a reflecting plate attached to the mixer with a heating device of the present invention; FIG. 11 is a side view showing a conventional mixer with a heating device; and FIG. 11 is a front view showing a conventional mixer with a heating device.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. FIG. FIG. 1 is a side view showing the configuration of a mixer A with a heating device according to the present invention. FIG. 2 is a rear view showing a state in which a heat insulating rear cover, which will be described later, is removed from the mixer A with a heating device.

In FIG. 1, reference numeral 1 denotes a base which is movable by providing wheels 2 on its lower portion, and 3 denotes a rocking table which is attached to the base 1 by a support shaft 4 so as to be rockable. The swing table 4 swings like a seesaw by rotating the support shaft 4 with a first electric motor (not shown) housed in the base 1 as a drive source.

Reference numeral 5 denotes a heat insulating lower cover attached to the side of the rocking table 4 (leftward in FIG. 1). shows a rotating wheel that rotates with the electric motor of .

7 is a substantially hollow cylindrical rotating drum that is placed on the rotating wheel 6 and rotates on the rotating wheel 6, and 8 is detachably attached to an opening at one end (left end in FIG. 1) of the rotating drum 7. It shows the lid.

Reference numeral 9 denotes a rotary joint attached to the other end (right end in FIG. 1) of the rotating drum 7. The outer side of the rotary joint 9 rotates together with the rotating drum 7; It consists of a fixed part that does not rotate even when rotated.

Reference numeral 10 denotes a circulation pipe that extends into the rotating drum 7 by passing through the inside of the fixed portion of the rotary joint 9 and supplies air or gas to the inside of the rotating drum 7 . Reference numeral 11 denotes a feeding pipe extending into the rotating drum 7 by passing through the fixed portion, and feeds the liquid into the rotating drum 7 in the form of a mist. Numeral 12 is a thermocouple protection pipe extending into the rotating drum 7 by passing through the fixed portion, and detects the temperature of the material accommodated in the rotating drum 7 with the thermocouple.

Reference numeral 13 denotes a heat-insulating upper cover which is placed on the rocking table 3 and has both ends opened. Reference numeral 14 denotes an inner surface of the heat-insulating upper cover 13, using a pair of fixing metal fittings 15, to extend the rotating drum 7 in the longitudinal direction. Infrared heaters mounted in parallel.

Reference numeral 16 (see FIG. 1) denotes a heat insulating rear cover detachably attached to one opening of the heat insulating upper cover 13, and 17 denotes an operation knob operated when the heat insulating rear cover 16 is attached to and detached from the heat insulating upper cover. there is Reference numeral 18 (see FIG. 1) denotes a heat insulation front cover that is detachably attached to the other opening of the heat insulation upper cover 13, and 19 denotes an operation knob that is operated when the heat insulation front cover 18 is attached to and detached from the heat insulation upper cover 13. ing.

Reference numeral 20 denotes a reflector mounted between the infrared heater 14 and the heat-insulating upper cover 13 using a fixture 15;

A hinge mechanism 22 (see FIG. 2) is attached between the support base 21 and the heat insulating upper cover 13 and used to open and close the heat insulating upper cover 13. A hinge mechanism 23 (see FIG. 2) is used when the heat insulating upper cover 13 is opened. It is a stopper that sets the opening limit.

Reference numeral 24 (see FIG. 2) is an operation panel mounted on the side surface of the base 1 for controlling the rotation and oscillation of the rotary drum 7, heating by the infrared heater 14, and the like. It is a cable that is connected between the connection boxes 26 on the side of the heat insulation upper cover 13 and houses the cords for energizing the infrared heater 14 . The cable 25 is removed from the connector 27 portion when the heat insulating upper cover 13 is opened.

Reference numeral 28 (see FIG. 1) denotes a pair of rocking rings that are attached in the circumferential direction near the center of the rotating drum 7 in the longitudinal direction. It is an oscillating wheel mounted between rings 28 .

Reference numeral 30 (see FIG. 1) denotes a support arm that bends and extends laterally (upper right direction in FIG. 1) from the rocking table 3, and a locking plate 31 is attached to the tip of the support arm. By engaging the anti-rotation plate 32 attached to the lower part of the rotary joint 9, the rotation of the rotary drum 7 allows the circulation pipe 10, the feed pipe 11, and the thermoelectric It prevents the anti-protection pipe 12 from rotating.

FIG. 3 shows an enlarged view of the structure of the reflector 20. As shown in FIG. The reflecting plate 20 is formed in a substantially semicircular shape in which the infrared heater 14 is arranged inside. Infrared rays radiated in other directions are reflected by the reflecting plate 20 and then radiated onto the rotating drum 7, so that the material in the rotating drum 7 can be efficiently heated.

Next, the operation of the mixer A with the heating device configured as described above will be described. First, the lid 8 of the rotating drum 7 is opened, the material to be stirred and mixed is introduced through the opening, and then the lid 8 is closed.

Subsequently, a vacuum pump (not shown) is started to exhaust the air inside the rotary drum 7 to the outside through the flow pipe 10 to degas the inside of the rotary drum 7 . After degassing, necessary valve switching is performed, and nitrogen gas or the like is supplied into the rotating drum 7 through the flow pipe 10 .

By operating the operation panel 24 in this state, the first and second electric motors (not shown) are activated to rotate the support shaft 4 and the rotary wheel 6 .

As the support shaft 4 rotates, the rocking table 3 rocks like a seesaw. Since the rotating drum 7 is placed on the rocking table 3 via the rotating wheels 6, the rocking of the rocking table 3 causes the rotating drum 7 to rock as well. Further, the rotation of the rotating wheel 6 causes the rotating drum 7 to rotate in the circumferential direction.

After a while from the start of the first and second motors, the operation panel 24 is operated to heat the infrared heater 14 at a predetermined energizing time and heating temperature. A semicircular reflecting plate 20 is arranged around the infrared heater 14 with its open side facing the direction of the rotating drum 7 . The infrared ray irradiated to the rotating drum 7 is directly radiated from the infrared heater 14 to the rotating drum 7, and the infrared ray irradiated in a direction other than the direction of the rotating drum 7 is reflected by the reflector 20 and then radiated to the rotating drum 7. .

As a result, the infrared rays emitted by the infrared heater 14 can be efficiently emitted to the rotating drum 7 . The infrared rays irradiated to the rotating drum 7 heat the material inside the rotating drum 7 .

In addition, as shown in FIG. 2, the infrared heaters 14 are arranged over a wide range extending from the upper side to the lateral direction of the rotating drum 7, so that the wide range of the rotating drum 7 can be heated by the infrared heaters 14. can. This is related to the fact that the mixer A with a heating device shown in FIGS.

This type of mixer generally has a structure in which oscillating wheels installed between a pair of oscillating rings provided in the circumferential direction of the rotating drum are provided on each side of the rotating drum (two in total). However, if the oscillating wheels are provided on both sides of the rotary drum, the oscillating wheels become an obstacle, and the infrared heater cannot be installed on the side of the rotary drum.

Alternatively, as shown in FIGS. 4 and 5, in order to install the heater at a side position of the rotating drum 7, the swing ring 114 is attached to a position near both ends of the rotating drum 113 in the longitudinal direction, There is also a way to secure space in the square position.

However, in the case shown in FIGS. 4 and 5, two oscillating wheels 115 contacting a pair of oscillating rings 114 are required.

Therefore, in the present invention, the swing ring 28 is provided near the center in the longitudinal direction of the rotary drum 7, and only one swing wheel 29 is provided between the swing rings 28 at the lower position of the rotary drum 7. As a result, the infrared heaters 14 can be installed on both side surfaces of the rotating drum 7, and the number of swing wheels 28 can be reduced.

By thus simplifying the structure of the apparatus and installing the infrared heater 14 in a wide range around the rotating drum 7, the rotating drum 7 can be heated in a short time.

By heating the rotating drum 7, the material in the rotating drum 7 is heated to a predetermined temperature. By detecting the temperature of the material with a thermocouple extending inside the rotating drum 7, the temperature of the material inside the rotating drum 7 can be adjusted to a desired temperature. The materials in the rotating drum 7 are stirred and mixed while being heated to a predetermined temperature.

When the rotating drum 7 rocks like a seesaw, the rocking wheels 29 arranged between the pair of rocking rings 28 come into contact with one of the rocking rings 28 in accordance with the rocking of the drum 7, thereby rotating. To smoothly rotate a drum 7 in the circumferential direction and to surely prevent the rotation drum 7 from sliding down from a rocking table 3 due to rocking.

Since the rotary drum 7 is generally covered except for the rotary joint 9 by the heat insulating top cover 13, the heat insulating back cover 16, and the heat insulating front cover 18 shown in FIG. , it is possible to prevent the heated air in the heat insulating covers 13, 16, 18 from leaking to the outside, and prevent the outside cold air from flowing into the heat insulating covers 13, 16, 18. - 特許庁

As a result, the infrared heater 14 can efficiently heat the rotating drum 7 . In addition, since the rotating drum 7 is filled with nitrogen gas, oxidation of the materials can be prevented, and even if the materials are overheated, there is no danger of ignition or explosion, and safe agitation and mixing can be performed. .

Once the material has been sufficiently agitated and mixed, the infrared heater 14 is energized and controlled to gradually cool the material. When the material is sufficiently cooled, the first and second motors are stopped and power to the infrared heater 14 is stopped. After that, the cover 8 is opened and the materials that have been stirred and mixed are taken out from the rotating drum 7 .

As described above, according to the mixer A with a heating device according to the present invention, the heat insulating covers 13, 16, and 18 are provided with openings only at one end of the rotating drum 7 and cover the outside of the rotating drum 7. Therefore, even when the rotating drum 7 is swung, it is possible to prevent the air warmed in the heat insulating covers 13, 16, 18 from escaping to the outside through the openings.

A pair of swing rings 28 are provided on the outer circumference of the rotary drum 7 , and one swing wheel 29 is provided below the rotary drum 7 between the swing rings 28 , so that the infrared heater 14 can be placed on the side of the rotary drum 7 . Since it can also be arranged in the rotatable drum 7, it is possible to heat a wide range of the rotating drum 7. In addition, it is possible to prevent the rotating drum 7 from sliding down from the rocking table 3 by one rocking wheel.

Further, an infrared heater 14 is attached to a position extending from the upper side to the side of the rotating drum 7, and a reflecting plate 20 is provided around the infrared heater 14 for efficiently irradiating the rotating drum 7 with the heat generated by the heater 14. Therefore, the material in the rotating drum 7 can be efficiently heated.

INDUSTRIAL APPLICABILITY The present invention can be applied to a mixer having a heating function using a heater.

REFERENCE SIGNS LIST 1 base 2 wheel 3 oscillating table 4 support shaft 5 heat insulating lower cover 6 rotating wheel 7 rotating drum 8 lid body 9 rotary joint 10 circulation pipe 11 feeding pipe 12 thermocouple protective cover 13 heat insulating upper cover 14 infrared heater 15 fixing Hardware 16 Insulation back cover 17, 19 Operation knob 18 Insulation front cover 20 Reflector 21 Support base 22 Hinge mechanism 23 Stopper 24 Operation panel 25 Cable 26 Connection box 27 Connector 28 Swing ring 29 Swing wheel 30 Support arm 31 Locking plate 32 Stop plate A Mixer with heating device

Claims (2)

A mixing device comprising a rotating wheel electrically driven on a rocking table, a substantially hollow cylindrical rotating drum rotating on the rotating wheel, and a heater disposed around the rotating drum to heat the rotating drum. The machine comprises a heat insulating cover which surrounds the outer circumference of the rotating drum with an opening provided only at one end in the longitudinal direction of the rotating drum, and the rotating drum comprises a pair of heat insulating covers arranged in the circumferential direction of the rotating drum. An oscillating wheel having oscillating rings is provided between the oscillating rings to maintain the rotation of the rotating drum by contacting one of the oscillating rings when the rotating drum is oscillated. A mixer with a heating device, characterized in that it is configured with only one at. The heater is attached to the inside of the heat insulating cover at a position extending laterally from the upper side of the rotating drum. A mixer with a heating device according to claim 1, characterized in that a plate is attached .

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