JP2020037089A - Mill with cleaning function - Google Patents

Abstract

To provide a mill with cleaning function which has cleaning function excellent for cleaning lower grinding wheel periphery, and of a part having this cleaning function is hard to get dirty.SOLUTION: A mill with cleaning function comprises: a ring-shaped lower grinding wheel 7 which is rotatably provided; a ring-shaped upper grinding wheel 17 which faces the lower grinding wheel 7; and a housing 21 which is configured from a lower case 15, and an upper case 20 which is so provided as to be openable and closable with respect to the lower case 15, and in which the lower grinding wheel 7 and the upper grinding wheel 17 are accommodated. The mill further comprises a jetting head 24 which is located in the housing 21, and jets a cleaning liquid from an exhaust nozzle 26 provided at a tip thereof toward the periphery of the lower grinding wheel 7, and the jetting head 24 has an upper surface side opening 27 in an upper surface part of the jetting head 24.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a grinder for producing ultrafine particles that can be used in the fields of food, chemicals, pharmaceuticals, fuels, and the like, and more particularly, to a grinder with a washing function capable of washing the inside of the grinder.

  BACKGROUND ART A grinder capable of producing ultrafine particles by pulverizing a material is known which includes two upper and lower whetstones based on the principle of a stone mill. For example, Patent Document 1 discloses a ring-shaped lower grinding wheel rotatably provided with respect to an apparatus body and a ring-shaped upper portion fixed to a lid and opposed to the lower grinding stone. A grinder with a grinding wheel is shown. In such a grinder, the lower grindstone is rotated while feeding the material between the lower grindstone and the upper grindstone, and the material is crushed into ultra-fine particles by a combined action of compression, shearing, friction, etc. generated between the grindstones. I have.

  By the way, in order to grind the material hygienically and to prevent contamination at the time of material exchange, it is essential to wash the inside of the grinder. Here, in the conventional grinder, as shown in FIG. 2 of Patent Document 2, for example, a hose is inserted through an opening provided at an upper portion, and a cleaning liquid is ejected from the hose to perform cleaning.

Japanese Patent No. 3558687 No. 62-31135

  However, in the above-described manual cleaning method, the work is troublesome, and the cleaning condition may vary depending on the operator. Here, in a device in another field (for example, a device for filling a beverage container with contents), a technology of CIP (Cleaning In Place) cleaning for automatically cleaning the inside of the device has been introduced. Is not yet common. In a grinding machine in which the lower grinding wheel and the upper grinding wheel are opposed to each other, the material crushed by these grinding wheels is discharged from the radially inner side to the outer side of the grinding wheel. It is easier. For this reason, when providing the function which can wash the inside of a grinder automatically, it is preferred that it is especially excellent in washing the circumference of a lower whetstone. On the other hand, in providing the cleaning function, it is necessary to consider this point because the crushed material may adhere to a part having the newly added cleaning function and become dirty. is there.

  The present invention has been made in view of such circumstances, and provides a grinder with a cleaning function that has a cleaning function that is particularly excellent in cleaning the periphery of the lower grindstone and that has a portion having the cleaning function that is less likely to be soiled. Aim.

  The present invention includes a ring-shaped lower grindstone rotatably provided, a ring-shaped upper grindstone opposed to the lower grindstone, a lower case, and an upper case provided to be openable and closable with respect to the lower case. A grinding machine comprising: a lower grinding wheel; and a housing for accommodating the upper grinding wheel, wherein a jet is provided in the housing, and ejects a cleaning liquid from a jet port provided at a tip portion toward a periphery of the lower grinding stone. A crusher having a washing function, comprising a head, wherein the ejection head has an upper surface side opening in an upper surface portion of the ejection head.

  Further, it is preferable that the ejection head has a lower surface side opening in a lower surface portion of the ejection head.

  It is preferable that the lower opening be smaller than the opening area of the upper opening.

  The grinding machine with a cleaning function of the present invention includes a jet head that is disposed in a housing and that jets a cleaning liquid from a jet port provided at a distal end portion toward a periphery of a lower grindstone. For this reason, the periphery of the lower grindstone, which is particularly liable to be stained by the crushed material, can be cleaned. Here, since the ejection head is provided near the lower part of the housing to eject the cleaning liquid toward the periphery of the lower grinding stone, the material pulverized by the lower grinding stone and the upper grinding stone flows toward the upper surface of the ejection head. And may adhere to the upper surface. On the other hand, the ejection head of the present invention has an upper surface side opening in the upper surface portion, and even if the pulverized material flows to the upper surface portion, it enters the inside of the ejection head from the upper surface side opening, The pulverized material is less likely to accumulate on the upper surface of the ejection head. In addition, since the material that has entered the inside of the ejection head is ejected from the ejection port together with the cleaning liquid at the time of cleaning, no dirt remains inside the ejection head. Further, when cleaning is performed, the cleaning liquid is also ejected from the upper surface side opening, so that dirt can be removed not only around the upper surface side opening but also around the upper grinding wheel and the upper part of the housing.

It is sectional drawing which showed one Embodiment of the grinder with a washing function according to this invention. 2A and 2B are views showing a jet head used in the mill of FIG. 1, wherein FIG. 1A is a perspective view from above, FIG. 2B is a perspective view from below, and FIG. 1C is a side view. It is sectional drawing.

  Hereinafter, an embodiment of a grinder with a washing function (hereinafter, referred to as a “mill”) according to the present invention will be described with reference to FIG.

  In FIG. 1, reference numeral 1 indicates a grinding machine of the present embodiment. A main motor 2 is provided below the attritor 1. The main motor 2 is mounted so that the main shaft 3 is directed upward. The main shaft 3 is connected to a lower portion of a cylindrical connecting member 4. A spline shaft 5 that is spline-coupled to the connection member 4 is provided above the connection member 4 at a position concentric with the connection member 4. Further, a disk-shaped rotary disk 6 is provided above the spline shaft 5, and on the lower surface of the rotary disk 6, a blade portion 6 a in which plate-shaped members are arranged at intervals in the circumferential direction is provided. ing. A ring-shaped lower grindstone 7 is attached to the upper surface of the turntable 6.

  Further, the grinding machine 1 is provided on the outer peripheral side of the connecting member 4, and is rotated by the output gear 9, the servomotor 8 having a torque limiting function provided laterally, the output gear 9 provided on the output shaft of the servomotor 8. A ring-shaped bevel gear 10 is provided. The bevel gear 10 is provided with a connection pin 11 that stands upright. The connection pin 11 is connected to a cylindrical support member 12 provided on the outer peripheral side of the connection member 4. A bearing 13 that rotatably supports the spline shaft 5 is provided inside the upper portion of the support member 12. A fixing member 14 having a cylindrical shape is provided on the outer peripheral side of the support member 12. Although not shown, a male screw portion is provided on the outer peripheral surface of the support member 12, and a female screw portion to be screwed to the male screw portion is provided on an inner peripheral surface of the fixing member 14. Further, a lower case 15 which is located below the turntable 6 and the lower grindstone 7 and has a larger diameter than the turntable 6 and the lower grindstone 7 is fixedly held by the fixing member 14. The lower case 15 of the present embodiment includes a gutter 16 for discharging the material pulverized by the lower grindstone 7 from the grinder 1.

  A ring-shaped upper grindstone 17 is provided above the lower grindstone 7 so as to face the lower grindstone 7. The upper grindstone 17 of the present embodiment is attached to the lower surface of a fixed plate 19 having an opening 18 in the center. Although not shown, a hopper or the like can be attached to the opening 18, and the material to be ground can be supplied to the grinder 1 through the opening 18. The fixed platen 19 includes an upper case 20 having a diameter larger than that of the upper grindstone 17 and swingably attached to the lower case 15. When the upper case 20 is swung toward the lower case 15, the turntable 6, the lower grindstone 7, and the upper grindstone 17 are housed inside and are aligned with the lower case 15 without any gap, while swinging away from the lower case 15. When the upper grindstone 17 is moved, the upper grindstone 17 can be widely opened with respect to the lower grindstone 7 because the upper grindstone 17 moves together. Here, the lower case 15 and the upper case 20 are collectively referred to as a housing 21.

  The lower grindstone 7 and the upper grindstone 17 of the present embodiment have flat surfaces at their outer peripheral portions for crushing the material. In the central part, a frustum-shaped conical portion having a hollow shape is provided so as to be continuous with the flat surface. Here, the flat surface of the lower grindstone 7 is referred to as a grinding upper surface 22, and the flat surface of the upper grindstone 17 is referred to as a grinding lower surface 23.

  In addition, the crusher 1 is provided with a jet head 24 capable of cleaning the periphery of the lower grindstone 7 in particular. The ejection head 24 of the present embodiment is attached to the lower case 15. As shown in FIG. 2, the ejection head 24 is formed so as to have a substantially cylindrical shape with a sealed distal end. At the rear end of the ejection head 24, a pipe 25 for supplying the cleaning liquid is provided. At the tip of the ejection head 24, four ejection ports 26 that are circular in the illustrated example are provided. In addition, the shape and the number of the ejection ports 26 are examples, and are not limited to those illustrated. An upper surface side opening 27 having a rectangular shape in a plan view is provided in the upper surface portion of the ejection head 24. Further, a lower surface side opening 28 which is rectangular when viewed from the bottom is also provided on the lower surface of the ejection head 24. Here, the lower surface side opening 28 of the present embodiment is located directly below the upper surface side opening 27 and is provided with an opening area smaller than the upper surface side opening 27.

  In the grinding machine 1 having such a configuration, when the main motor 2 is driven, the main shaft 3, the connecting member 4, the spline shaft 5, and the turntable 6 are rotated, and the lower grindstone 7 can be rotated accordingly. . When the servomotor 8 is driven, the bevel gear 10 is rotated by the output gear 9, whereby the support member 12 is also rotated via the connecting pin 11. Here, since the supporting member 12 is screwed to the fixing member 14, the supporting member 12 moves in the vertical direction with respect to the fixing member 14 while rotating, and the spline supported by the supporting member 12 via the bearing 13. The shaft 5 and the turntable 6 also move up and down. Thus, the distance between the grinding upper surface 22 and the grinding lower surface 23 can be adjusted by moving the lower grinding wheel 7 up and down. The opposing distance between the grinding upper surface 22 and the grinding lower surface 23 is, for example, that when the torque of the servomotor 8 is changed by raising the lower grinding wheel 7, the grinding upper surface 22 and the grinding lower surface 23 are in contact with each other. Considering this position as a reference, the opposing distance between the grinding upper surface 22 and the grinding lower surface 23 can be adjusted.

  In grinding the material, the facing distance between the grinding upper surface 22 and the grinding lower surface 23 is appropriately set, and the material is supplied through the opening 18 by rotating the lower grindstone 7. After supplying the material, the lower grindstone 7 may be rotated. As a result, the material introduced inside the lower grinding wheel 7 and the upper grinding wheel 17 is sent between the grinding upper surface 22 and the grinding lower surface 23 by centrifugal force or the like and is pulverized. leak. The pulverized material is sent radially outward by centrifugal force generated by the blades 6a, and is stored in a container or the like (not shown) through the gutter portion 16.

  By the way, the pulverized material flowing out of the lower grindstone 7 and the upper grindstone 17 flows through the lower grindstone 7 and the rotary disk 6 to the lower case 15 and the gutter portion 16, and may hang on the upper surface of the ejection head 24. . Since the ejection head 24 of the present embodiment has the upper surface side opening 27, the material that has fallen down enters the ejection head 24 from the upper surface side opening 27. Further, since the lower surface side opening 28 is provided directly below the upper surface side opening 27, the material once entering the inside of the ejection head 24 flows out of the ejection head 24 through the lower surface side opening 28, and the lower case 15 and the gutter portion are formed. It will flow to 16. For this reason, even if the pulverized material falls down on the ejection head 24, the amount of material remaining on the upper surface of the ejection head 24 can be reduced.

  After crushing the material for a long time or when crushing a different type of material, the inside of the crusher 1 is washed by the ejection head 24. Specifically, cleaning is first performed using an alkaline cleaning solution, then cleaning is performed using an acidic cleaning solution, and finally, rinsing is performed using warm water. Note that rinsing with warm water may be performed before using an alkaline cleaning solution or an acidic cleaning solution. Further, the temperature is not limited to warm water, and normal temperature water may be used. In the present embodiment, the cleaning liquid is supplied to the ejection head 24 through the pipe 25. As a result, the cleaning liquid is ejected from the ejection port 26 provided at the tip of the ejection head 24 toward the periphery of the lower grindstone 7 (toward the lower surface of the turntable 6 in the illustrated example). Can be washed. The ejection head 24 of the present embodiment also ejects from the upper opening 27 and the lower opening 28. Therefore, the entire area inside the housing 21 can be cleaned in addition to the area around the upper grindstone 17. In addition, the ejection head 24 of the present embodiment is mounted below the housing 21, and the area of the inner wall surface of the housing 21 is larger above the ejection head 24 than below. Here, the opening area of the upper surface side opening 27 is larger than the opening area of the lower surface side opening 28, and a larger amount of the cleaning liquid is ejected upward. For this reason, the inner wall surface above the housing 21 having a large area can be effectively cleaned. Even if the contents that have entered from the upper opening 27 at the time of pulverization remain inside the ejection head 24, the cleaning liquid is ejected together with the washing liquid from the ejection port 26, the upper opening 27, and the lower opening 28 by feeding the washing liquid. Therefore, no dirt remains inside the ejection head 24. When cleaning is performed, cleaning liquid and the like are injected from the opening 18 in addition to the cleaning liquid and the like being jetted from the jet head 24, and dirt inside the lower grindstone 7 and the upper grindstone 17 is also removed.

  As described above, one embodiment of the mill with a washing function according to the present invention has been described. However, the present invention is not limited to this embodiment, and various modifications and additions are made within the scope according to the claims. Is also included. For example, the above-described upper grindstone 17 is non-rotatably attached to the fixed platen 19, but may be rotatable by another motor provided separately from the main motor 2.

  Although the ejection head 24 is attached to the lower case 15, the attachment position can be variously changed, such as being provided on the upper case 20. Further, although the illustrated ejection head 24 is one, a plurality of ejection heads 24 may be provided, for example, arranged at equal intervals around the lower grindstone 7 (different intervals may be used). Although the ejection head 24 is directed horizontally in the illustrated example, it may be directed obliquely upward or downward. Further, the shape of the ejection head 24 can be variously selected. For example, the ejection head 24 may be formed into a spherical shape by expanding a flat distal end outward, or may be formed into a cylindrical shape with a cylindrical peripheral wall. . In addition, the upper surface side opening 27 and the lower surface side opening 28 may be circular, and the shape is not limited to the illustrated example. Further, the lower surface side opening 28 is preferably provided immediately below the upper surface side opening 27, but may be provided at a position shifted from the upper surface side opening 27. Further, the numbers of the upper opening 27 and the lower opening 28 are also arbitrary. The lower opening 28 preferably has a smaller opening area than the upper opening 27 in order to secure the momentum of the flushing water to be jetted. However, the opening area may be equal to or larger than the upper opening 27. The lower opening 28 may be omitted.

  Although the ejection head 24 described above is fixedly attached to the lower case 15, the ejection head 24 is configured to move forward and backward along the axial direction thereof, so that the ejection head 24 is retracted when crushing the material. It may be. That is, if the tip of the ejection head 24 is retracted to the extent that the tip of the ejection head 24 is aligned with the inner wall of the lower case 15, the pulverized material does not accumulate on the upper portion of the ejection head 24. On the other hand, when cleaning the housing 21, the jet head 24 may be advanced to jet the cleaning liquid at the position shown in the figure.

  Further, cleaning by the ejection head 24 can be performed by various methods. For example, after driving for a predetermined time, the pulverizing operation may be stopped, and the operator may be informed by sound or light to promote cleaning. Further, a plurality of passages by the gutter section 16 are provided and the passage can be switched to an intended passage. After a predetermined period of operation, the passage is automatically switched so that foreign matter is not mixed into the crushed material, and the cleaning liquid is automatically discharged. It may be made to spout out.

1: Grinding machine 2: Main motor 3: Main shaft 4: Connection member 5: Spline shaft 6: Rotating disk 6a: Blade 7: Lower grindstone 8: Servo motor 9: Output gear 10: Gear 11: Connection pin 12: Support member 13: Bearing 14: Fixed member 15: Lower case 16: Gutter 17: Upper grindstone 18: Opening 19: Fixed plate 20: Upper case 21: Housing 22: Grinding upper surface 23: Grinding lower surface 24: Jet head 25: Pipe 26: Spout 27: Upper opening 28: Lower opening

Claims (3)

A ring-shaped lower grindstone rotatably provided, a ring-shaped upper grindstone opposed to the lower grindstone, a lower case, and an upper case provided to be openable and closable with respect to the lower case; And a housing for housing the upper whetstone inside,
An ejection head arranged in the housing and ejecting a cleaning liquid from an ejection port provided at a distal end toward the periphery of the lower grindstone,
A grinding machine with a washing function, wherein the ejection head has an upper surface side opening in an upper surface portion of the ejection head.   The crusher with a cleaning function according to claim 1, wherein the ejection head has a lower surface side opening in a lower surface portion of the ejection head.   The grinding machine with a washing function according to claim 2, wherein the lower surface side opening is smaller than the opening area of the upper surface side opening.

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