WO2021024840A1

WO2021024840A1 - Grinding device

Info

Publication number: WO2021024840A1
Application number: PCT/JP2020/028780
Authority: WO
Inventors: 勝三角; 尚泉杉本
Original assignee: シャープ株式会社
Priority date: 2019-08-02
Filing date: 2020-07-28
Publication date: 2021-02-11
Also published as: JP7474261B2; CN114173928B; JPWO2021024840A1; CN114173928A; TW202120185A

Abstract

A grinding device comprising: a grinding unit having a lower millstone and an upper millstone, said grinding unit having a conical mill comprising an inner millstone, which is a rotating millstone that rotates synchronously with the lower millstone, and an outer millstone, which is a fixed millstone that is provided on the upper millstone, and grinding, in the conical mill, a solid raw material containing oil that is fed into an inlet between the inner millstone and the outer millstone; a guiding unit that has an opening on the bottom end, wherein the diameter of the opening is smaller than the inner diameter of the outer millstone at the inlet, and that feeds the supplied solid raw material from the opening to the inlet of the conical mill; and a guiding member that is provided on the top end of the inner millstone and that guides the solid raw material from the guiding unit to the inlet. The guiding member includes at least two guiding plates; each of the at least two guiding plates has an inclined surface inclined with respect to the horizontal plane at a designated angle; and the heights from the center of the inclined surfaces on the at least two guiding plates to the horizontal plane of the inlet are different.

Description

Crusher

The present invention relates to a crushing device for crushing solid raw materials such as cacao beans. The present application claims priority to Japanese Patent Application No. 2019-143193 filed in Japan on August 2, 2019, the contents of which are incorporated herein by reference.

As a crusher of this type, for example, an electric powder grinder disclosed in Patent Document 1 is known. In this electric powder grinder, the material to be crushed is charged and crushed by a charging unit having an opening to be sent to the next stage, a coarse powder grinding unit that roughly crushes the material to be crushed from the introduction adjustment unit, and a coarse powder grinding unit. It is provided with a fine powder grinding unit that further finely crushes the material to be crushed, and an adjusting unit that adjusts the amount of the material to be crushed into the fine powder grinding unit.

JP-A-2018-69136

By the way, in Patent Document 1, the temperature of the introduction region of the object to be crushed in the pulverized region where the object to be crushed is set to be lower than the temperature at which the oil contained in the object to be crushed is extracted, and the temperature of the discharge region is set. , The temperature at which the oil content of the object to be crushed is extracted. This prevents the cacao bean powder, which is the object to be crushed, from sticking to each other.

However, in general, cocoa beans, which are the objects to be crushed, are easily crushed when they are warmed to some extent. In particular, if the cacao beans are warmed to a desired temperature (a temperature at which crushing can be performed efficiently) at the initial stage of crushing in the crushing apparatus, crushing can be optimally performed.

However, in Patent Document 1, as described above, in the crushed region, the oil content of the pulverized object is set to be lower than the extraction temperature in the initial pulverization stage (introduction region) of the pulverized object. As a result, it cannot be said that the object to be crushed has been heated to a temperature at which crushing can be performed efficiently. Therefore, the technique disclosed in Patent Document 1 has a problem that the object to be pulverized cannot be optimally pulverized.

Further, if the cacao beans are warmed to a desired temperature (a temperature at which crushing can be performed efficiently) in the initial stage of crushing (introduction region of the object to be crushed) in the crushing apparatus, crushing can be optimally performed. .. However, if the cocoa beans flow back from the introduction region of the object to be crushed and return to the cocoa bean supply section (hopper), the cocoa beans warmed to the desired temperature in the introduction region will cause other parts in the hopper. The cocoa beans are warmed. In such a case, the cacao beans are stuck to each other in the hopper due to the oil exuded, and there arises a problem that an appropriate amount of cacao beans cannot be supplied from the hopper to the introduction region of the object to be crushed.

One aspect of the present invention is to prevent the object to be crushed that has been warmed to a temperature suitable for pulverization from flowing back, thereby suppressing an increase in temperature in the supply portion of the object to be pulverized and producing an appropriate amount of the object to be pulverized. The purpose is to realize a crusher that can be supplied.

In order to solve the above problems, the crushing device according to one aspect of the present invention is a crushing portion having a lower mortar and an upper mortar, and an inner mortar which is a rotary mortar that rotates in synchronization with the lower mortar. The conical mortar has a conical mortar composed of an outer mortar, which is a fixed mortar provided on the upper mortar, and a solid raw material having an oil content, which is charged into an inlet portion between the inner mortar and the outer mortar It has a crushing portion and an opening at the lower end, and the diameter of the opening is smaller than the inner diameter of the outer mortar of the inlet, and the supplied solid raw material is passed through the opening to the conical mortar. The introduction portion to be charged into the inlet portion of the above, and an introduction member provided at the upper end portion of the inner mortar to guide the fixed raw material from the introduction portion to the inlet portion, and the introduction member includes at least two pieces. Each of the at least two introduction plates including the introduction plate has an inclined surface inclined at a predetermined angle with respect to the horizontal plane, and the horizontal plane in the introduction portion from the center of the inclined surface in the at least two introduction plates. It is characterized by different heights.

According to one aspect of the present invention, by preventing the object to be pulverized that has been warmed to a temperature suitable for pulverization from flowing back, the temperature rise in the supply portion of the object to be pulverized is suppressed, and the object to be pulverized is suitable. Can be supplied in large quantities.

It is a perspective view of the crushing apparatus which concerns on Embodiment 1 of this invention. It is an exploded perspective view of the crushing unit provided in the crushing apparatus shown in FIG. It is a front view of the vertical cross-sectional portion of the crushing unit provided in the crushing apparatus shown in FIG. It is a perspective view of the lower mortar and the inner mortar provided in the crushing unit shown in FIG. It is a top view of the lower mortar and the inner mortar shown in FIG. It is a side view of the upper surface view of the lower mortar and the inner mortar shown in FIG. 5 when viewed in the direction of arrow A. FIG. 5 is a side view of the upper surface view of the lower mortar and the inner mortar shown in FIG. 5 when viewed in the direction of arrow B. It is a figure for demonstrating the inclination angle of the 1st introduction plate provided in the upper part of the inner mortar shown in FIG. It is a figure for demonstrating the inclination angle of the 2nd introduction plate provided in the upper part of the inner mortar shown in FIG. It is a top view of the crushing unit provided in the crushing apparatus which concerns on Embodiment 2 of this invention. It is a front view of the vertical cross-sectional portion of the crushing unit shown in FIG.

(Overview of crushing solid raw materials)
The crushing of solids such as cereals and beans is used for various foods because the crushing of solids dramatically expands the applications. However, it is also well known that it is difficult to efficiently produce a uniform pulverized product and prevent deterioration of flavor. If crushing efficiency is emphasized, the particles of the crushed product will be coarse and non-uniform, and the smoothness of wheat flour, buckwheat flour, etc. will be lost, and not only will the quality of udon and buckwheat deteriorate, but extra heat will be applied during crushing. Deterioration of flavor due to oxidation is likely to occur. If extra frictional heat is applied to the crushed material during crushing, the fresh flavor of tea will be impaired and the soymilk will have a strong green odor. The old idea of slowly rotating the mortar to crush the crushed material makes a lot of sense in that it suppresses the generation of frictional heat and thus prevents the flavor of the crushed material from deteriorating during processing.

The crushing method, in which the particle size of the crushed material is adjusted by the clearance between the rotating grindstone like a millstone and the fixed grindstone, has the same basic idea even if the material is changed from natural stone to ceramic or metal. is there. This is the same in both dry crushing and wet crushing, which is a typical example in which crushing of buckwheat seeds in buckwheat production is performed by dry method and crushing of soybean in tofu production is performed by wet method. .. Milling by the stone mill method is used in various fields, but it is carried out by adjusting the clearance between the rotary grindstone part and the fixed grindstone part so that the desired particle size can be obtained by one-step crushing regardless of whether it is dry or wet. Has been done. Further, even in a crusher made of a metal such as stainless steel, the clearance between the rotary blade and the fixed blade is designed and implemented so that the crushed product of the desired size can be obtained by one-step crushing. ..

For example, in the case of chocolate, a raw material called cacao nibs, which is a coarsely crushed roasted cacao bean, is used. When crushing at a store such as a chocolate factory, the stone mill method may be used, and the clearance between the stone mills is adjusted step by step. Grinding should be repeated multiple times with a gradual reduction in clearance until the desired smooth chocolate is obtained. The size of a single grain of cacao, which is the raw material, is relatively large and disadvantageous for clearance. That is, since cacao is gradually finely crushed, it takes time to obtain the desired particles.

For crushing cacao, wet crushing is adopted by utilizing the fact that the melting point of cacao is about 35 ° C and it becomes a liquid (paste) due to the frictional heat between the mortar and cacao nibs during crushing cacao nibs. The temperatures of cacao and mortar during crushing are determined by the circumstances and have not been controlled in the past. If the temperature is low, the cacao cannot flow in the mortar and sticks to the groove, cannot be crushed, and the load on the motor increases. On the other hand, if the temperature is too high, the cocoa may be scorched, degrading the quality of the cocoa.

[Embodiment 1]
Hereinafter, one embodiment of the present invention will be described in detail. FIG. 1 is a perspective view of a crushing device 1 including a crushing unit 11 as the crusher of the present embodiment. FIG. 2 is an exploded perspective view of the crushing unit 11 shown in FIG. FIG. 3 is a front view of a vertical cross-sectional portion of the crushing unit 11 shown in FIG. The crushing unit 11 is preferably made of a material having good thermal conductivity.

(Outline of crusher 1)
As shown in FIG. 1, the crushing device 1 includes a crushing unit 11, a heat insulating container 12, a hopper 13, a motor 14, and a cocoa mass take-out lever 15.

The crushing unit 11 is housed inside the heat insulating container (temperature control container) 12, and the hopper 13 is mounted on the crushing unit 11. The hopper 13 accommodates a solid material. In this embodiment, the case where the solid raw material is cacao nibs will be described. The motor 14 is provided in the lower part of the crushing device 1 and rotates the crushing portion 26 of the crushing unit 11. The cocoa mass take-out lever 15 is located on the side of the crushing device 1. By rotating the cacao mass take-out lever 15 downward, the cacao mass (cacao powder) of the cacao nibs crushed by the crushing unit 11 can be taken out from the take-out port 16.

In the crushing device 1, the crushing unit 11 is detachably fitted to the heat insulating container 12 and the hopper 13 is detachably fitted to the crushing unit 11 for cleaning. Further, the crushing unit 11 is provided with a handle (not shown), and the crushing unit 11 can be attached / detached by using this handle.

(Structure of crushing unit 11)
As shown in FIGS. 2 and 3, the crushing unit 11 has a mill case 21. Inside the mill case 21, a mill case lid 22, an upper mortar holder 24, a metal plate 41, a crushing portion 26, a material receiving portion 34, a transport passage 35, and a drive transmission portion 36 are provided from top to bottom.

The mill case lid 22 functions as a lid of the mill case 21, and is provided inside with an introduction portion 25 that functions as a hopper receiving portion for receiving the hopper 13 arranged on the crushing unit 11. The introduction unit 25 receives the cacao nibs supplied from the hopper 13 and introduces them into the crushing unit 26. The introduction portion 25 has an opening 25a at the lower end portion.

The crushing portion 26 has a conical mortar 27 in the central portion and a flat mortar 28 around the conical mortar 27. The conical mortar 27 includes an inner mortar 29 which is a rotary mortar and an outer mortar 30 which is a fixed mortar. The outer mortar 30 has a cylindrical shape, and the inner mortar 29 is inserted into the outer mortar 30 and has a shape in which the outer diameter gradually decreases from the lower part to the upper part. The inside of the outer mortar 30 at the upper end of the conical mortar 27 is the inlet portion 33 of the cacao nibs. The conical mortar 27 grinds the cacao nibs introduced from the introduction unit 25 into coarse cacao mass.

The flat mortar 28 is composed of a lower mortar 31 which is a rotary mortar and an upper mortar 32 which is a fixed mortar. The lower mortar 31 is fixed to the outer peripheral portion of the inner mortar 29 and is integrated with the inner mortar 29. The upper mortar 32 is fixed to the outer peripheral portion of the outer mortar 30 and is integrated with the outer mortar 30. A central shaft 37 is provided at the center of the inner mortar 29 and the lower mortar 31. The flat mortar 28 grinds the coarse cocoa mass formed by the conical mortar 27 into fine cocoa mass.

The material receiving unit 34 directly receives the cocoa mass crushed by the crushing unit 26. The transport passage 35 transports the cocoa mass received by the material receiving unit 34 downward. The drive transmission unit 36 transmits the driving force of the motor 14 to the central shaft 37 of the crushing unit 26 mounted on the material receiving unit 34, and rotates the crushing unit 26 (inner mill 29 and lower mill 31).

An introduction member 51 connected to the central shaft 37 is provided on the upper surface 29a of the inner mortar 29. The introduction member 51 is composed of two introduction plates (first introduction plate 51a and second introduction plate 51b), and rotates together with the inner mortar 29 in the opening 25a of the introduction portion 25. As a result, the cacao beans supplied from the hopper 13 can be reliably introduced into the crushed region. Details of the introduction member 51 will be described later.

The metal plate 41 is a heat conductive member that contacts the upper surface of the upper mill 32 and transmits the temperature of the upper mill 32. The metal plate 41 is made of SUS and is formed in a disk shape having a size matching the size of the upper surface of the upper mortar 32. Further, the metal plate 41 has a temperature measuring unit 41a that is bent upward with a part protruding from the outer edge. The temperature measuring unit 41a is preferably formed integrally with the metal plate 41, but may be attached to the metal plate 41 as a separate member.

Since the metal plate 41 is intended to transmit the temperature of the upper mortar 32, it is preferable that the metal plate 41 has the same size as the upper surface of the upper mortar 32 as described above. However, for the purpose of transmitting the temperature of the upper mortar 32, the size of the metal plate 41 may be smaller than the size of the upper surface of the upper mortar 32. Further, as the material of the metal plate 41, SUS is used from the viewpoint of having thermal conductivity and elasticity, but any material may be used as long as it has thermal conductivity and elasticity.

As shown in FIG. 3, the temperature measuring unit 41a is formed so as to come into contact with the measuring unit 20a of the temperature sensor 20 in a state where the crushing unit 26 is housed in a predetermined position in the mill case 21. Here, the temperature measuring unit 41a is formed so as to come into contact with the measuring unit 20a of the temperature sensor 20 against the urging force by the elastic force. In this way, if the temperature measuring unit 41a is made elastic, when the crushing unit 26 is housed in a predetermined position in the mill case 21, the temperature measuring unit 41a of the metal plate 41 is reliably connected to the measuring unit 20a of the temperature sensor 20. Can be contacted with.

As shown in FIG. 3, the temperature sensor 20 is arranged in a locking portion 23 in which the measuring portion 20a is exposed on the inner surface of the mill case 21 and the main body portion is formed on the outer surface of the mill case 21 and has an internal cavity. .. The main body of the temperature sensor 20 is connected to a contact terminal 21a formed on the bottom 23a of the locking portion 23. The contact terminal 21a is connected to a control unit in the heat insulating container 12 when the crushing unit 11 is set in the heat insulating container 12.

The locking portion 23 is formed on the outer surface of the mill case 21 so that the crushing unit 11 can be correctly set at a predetermined position in the heat insulating container 12. In the present embodiment, by arranging the temperature sensor 20 in the locking portion 23, it is not necessary to separately provide a member for arranging the temperature sensor 20. However, a member for arranging the temperature sensor 20 may be separately provided.

(Introduction member 51)
As shown in FIGS. 5 to 7, the introduction member 51 is provided on the upper surface 29a of the inner mortar 29. The introduction member 51 includes a first introduction plate 51a and a second introduction plate 51b. The first introduction plate 51a and the second introduction plate 51b have an inclined surface 51c and an inclined surface 51d, respectively, which are inclined with respect to the upper surface 29a of the inner mortar 29.

The first introduction plate 51a and the second introduction plate 51b may be integrally formed by processing one metal plate, or may be formed as separate members.

As shown in FIG. 7, the first introduction plate 51a and the second introduction plate 51b are arranged substantially in parallel, and the height of the inner mortar 29 from the upper surface 29a is higher than that of the second introduction plate 51b. It's getting higher. Specifically, as shown in FIG. 8, the inclined surface 51c of the first introduction plate 51a is inclined at an angle α with respect to the horizontal plane. Specifically, the inclined surface 51c is inclined at an angle α in the longitudinal direction toward the peripheral edge of the opening 25a of the introduction portion 25. As shown in FIG. 9, the inclined surface 51d of the second introduction plate 51b is inclined at an angle β with respect to the horizontal plane. Specifically, the inclined surface 51c is inclined at an angle β in the longitudinal direction toward the peripheral edge of the opening 25a of the introduction portion 25. α = β may be used, and α = β may not be used.

Let h1 be the height from the center x1 of the inclined surface 51c of the first introduction plate 51a to the horizontal plane y1 of the opening 25a of the introduction portion 25. Further, the height from the center x2 of the inclined surface 51d of the second introduction plate 51b to the horizontal plane y1 of the opening 25a of the introduction portion 25 is defined as h2. In this case, h1> h2. In addition, h1 and h2 may be equal.

Further, as shown in FIG. 8, the first introduction plate 51a has a horizontal plane of an opening 25a in which the lower end of the inclined surface 51c of the first introduction plate 51a communicates with the inlet 33 of the crushing portion 26 of the introduction portion 25. It is formed to be higher than. The lower end of the inclined surface 51c of the first introduction plate 51a may be at the same height as the horizontal plane of the opening 25a communicating with the inlet 33 of the crushing portion 26 of the introduction portion 25.

Further, as shown in FIG. 9, the second introduction plate 51b has a horizontal plane of an opening 25a in which the lower end of the inclined surface 51d of the second introduction plate 51b communicates with the inlet 33 of the crushing portion 26 of the introduction portion 25. It is formed to be lower than. The lower end of the inclined surface 51d of the second introduction plate 51b may be at the same height as the horizontal plane of the opening 25a communicating with the inlet 33 of the crushing portion 26 of the introduction portion 25.

The inclined surfaces 51c and the inclined surface 51d of the first introduction plate 51a and the second introduction plate 51b have opposite inclination directions. That is, as shown in FIG. 6, the first introduction plate 51a is inclined from the upper end of the slope (right side in the figure) of the inclined surface 51c to the lower end of the slope (left side in the figure), and the second introduction plate 51b is the inclined surface 51d. It slopes from the upper end of the slope (left side of the figure) to the lower end of the slope (right side of the figure). As described above, when the height of the inner mortar 29 from the upper surface 29a is higher than that of the second introduction plate 51b, the first introduction plate 51a and the second introduction plate 51a are added to this configuration. It can be said that the plate 51b has a discontinuous screw structure. Therefore, the cacao nibs are introduced into the crushing portion 26 side by rotating the introducing member 51 clockwise when viewed from the upper surface side of the upper mill 32. That is, when the inner mortar 29 rotates clockwise when viewed from the upper surface side of the upper mortar 32, the first introduction plate 51a and the second introduction plate 51b also rotate clockwise when viewed from the upper surface side of the upper mortar 32. As a result, cacao nibs are conveyed from the upper end side to the lower end side of the inclined surface 51c of the first introduction plate 51a, some cacao nibs are introduced into the crushing portion 26, and the remaining cacao nibs are conveyed to the second introduction plate 51b side. Then, it is introduced into the crushing section 26 by the second introduction plate 51b. Then, the cacao nibs that could not be completely introduced into the crushing portion 26 by the second introduction plate 51b escaped between the first introduction plate 51a and the second introduction plate 51b, and then by the first introduction plate 51a, the crushing portion 26 Introduced in.

Both the first introduction plate 51a and the second introduction plate 51b may have a shape that introduces cacao nibs into the crushing portion 26 by rotating, and thus are limited to the shapes shown in FIGS. 8 and 9 and the like. It is not something that is done. The point is that the introduction member 51 is not limited to having the first introduction plate 51a and the second introduction plate 51b, and has a structure in which cacao nibs are intermittently supplied to the crushing portion 26 by rotating. If there is, any structure may be used.

In order to introduce cacao nibs into the crushing section 26 intermittently and stably, the height of the upper end of the second introduction plate 51b is substantially the same as the height of the lower end of the first introduction plate 51a. Is preferable. However, the height of the upper end of the second introduction plate 51b may be higher than the height of the lower end of the first introduction plate 51a. In this case, the height of the upper end of the second introduction plate 51b needs to be lower than the height of the upper end of the first introduction plate 51a. This is because the raw material cacao nibs cannot be intermittently pushed into the crushing section 26.

Further, if the inclination angle of the first introduction plate 51a and the second introduction plate 51b becomes too large, problems such as a decrease in the supply capacity and a reversion occur. Therefore, it is preferable that the inclination angles of the first introduction plate 51a and the second introduction plate 51b are set so that a plurality of cacao nibs can be inserted. That is, the inclination angles of the first introduction plate 51a and the second introduction plate 51b change depending on the size of the raw material.

(effect)
As described above, the introduction member 51 provided on the upper surface 29a of the inner mortar 29 of the conical mortar 27 is composed of two first introduction plates 51a and a second introduction plate 51b. By rotating the first introduction plate 51a and the second introduction plate 51b, the cacao nibs are arranged so as to be sequentially delivered from the upper part. As a result, cacao nibs can be stably supplied to the inlet portion 33, which is the inlet of the conical mortar 27.

According to the above configuration, of the cacao nibs introduced into the crushing section 26 by the first introduction plate 51a, the cacao nibs that could not be introduced into the crushing section 26 are pushed into the crushing section 26 by the second introduction plate 51b. To do. Then, the cacao nibs that could not be completely introduced into the crushing portion 26 by the second introduction plate 51b escape to the space between the first introduction plate 51a and the second introduction plate 51b. That is, in a configuration in which cacao nibs are continuously introduced into the crushing section 26 like a screw, the amount of cocoa nibs supplied to the crushing section 26 becomes excessive, and there arises a problem that the cocoa nibs are clogged near the inlet portion 33 of the crushing section 26. .. However, if the cacao nibs are intermittently introduced into the crushing section 26 by using the first introduction plate 51a and the second introduction plate 51b as in the above configuration, the supply amount to the crushing section 26 is always constant. , Cacao nibs are not clogged near the inlet 33 of the crushing portion 26.

As described above, in the crushing apparatus 1 having the above configuration, the cacao nibs are not clogged near the inlet portion 33 of the crushing portion 26, so that the cacao nibs that could not be introduced into the crushing portion 26 overflow from the introduction portion 25 and enter the hopper 13. There is no backflow.

Normally, the vicinity of the crushed portion 26 is heated to a temperature suitable for crushing cacao nibs, so even cocoa nibs that have not been introduced into the crushed portion 26 may be heated. Therefore, when the cacao nibs in the vicinity of the crushing portion 26 return to the hopper 13 via the introduction portion 25, the hopper 13 is warmed, the cacao nibs in the hopper 13 are heated, and the oil exudes and sticks to the cacao nibs from the hopper 13. The problem arises that an appropriate amount cannot be supplied.

However, if the cacao nibs are not clogged near the introduction port of the crushing section 26 as in the crushing device 1 having the above configuration, the above-mentioned problem caused by the cacao nibs overflowing from the introduction section 25 and returning to the hopper 13 is solved. Does not occur.

In this way, the cacao nibs required for crushing in the crushing section 26 are sequentially introduced into the crushing section 26, and the unnecessary cocoa nibs can stand by at the upper part, so that the stable crushing performance of the cocoa nibs can be ensured. Here, the pulverization performance indicates the fineness of the pulverized material and the production rate.

Therefore, simply by replenishing the raw material cacao nibs, it is possible to always supply an appropriate amount of cacao nibs to the crushing unit 26 by rotating the introduction member 51. Therefore, as in the conventional case, the amount of the raw material input is adjusted to improve the crushing performance. You can save the trouble of adjusting. Further, in order to stabilize the supply amount of the raw material, it is possible to save the trouble of inputting the raw material every time (opening / closing the shutter, etc.).

The vicinity of the opening 25a of the introduction portion 25 is inclined. By installing the first introduction plate 51a at a position where the inclined portion and the first introduction plate 51a intersect (in the height direction), the height from the center of the first introduction plate 51a to the opening 25a The cacao nibs are introduced into the opening 25a from (height h1 in FIG. 8). In this case, the height h1 is preferably larger than the size of one cacao nibs.

Moreover, since the first introduction plate 51a is rotating, the cacao nibs that are not introduced into the opening 25a and are extruded in the circumferential direction can be reached by climbing the inclined surface 51c of the first introduction plate 51a. By parrying such force and moving, vertical circulation occurs. As a result, the cacao nibs are clogged (bridged) in the path from the opening 25a of the introduction section 25 to the crushing section 26, and the cacao nibs can be prevented from sticking in the path.

[Embodiment 2]
Other embodiments of the present invention will be described below. For convenience of explanation, the same reference numerals will be added to the members having the same functions as the members described in the above embodiment, and the description will not be repeated.

In the present embodiment, a crushing device capable of reducing clogging due to the accumulation of cacao nibs in the introduction portion 25 will be described.

Generally, when the introduction portion 25 introduced from the hopper 13 to the crushing portion 26 is a cylinder, the raw material is deposited on the cylindrical surface, which causes clogging. Therefore, in the crushing unit 111 of the present embodiment, as shown in FIGS. 10 and 11, an inclined surface is formed in which the vicinity of the opening 25a of the introduction portion 25 is inclined toward the inlet portion 33, and the entrance portion 33 is formed on the inclined surface. A protrusion 52 extending toward the surface is provided.

By providing the protrusion 52 on the inclined surface of the introduction portion 25, a small amount of cacao nibs can be introduced from the introduction member 51 to the crushing portion 26 starting from the protrusion 52 in the introduction portion 25.

By supplying cacao nibs to the crushing section 26 little by little in this way, clogging near the inlet portion 33 of the cocoa nibs of the crushing section 26 can be reduced, so that the cocoa nibs are deposited on the introduction section 25 without being introduced into the crushing section 26. Never. Therefore, the crushed portion 26 is not clogged due to the accumulation of cacao nibs.

[Summary]
The crushing device according to the first aspect of the present invention is a crushing portion 26 having a lower mortar 31 and an upper mortar 32, and is an inner mortar 29 which is a rotary mortar that rotates in synchronization with the lower mortar 31 and the upper mortar. The solid raw material having an oil content, which has a conical mortar 27 composed of an outer mortar 30 which is a fixed mortar provided in 32 and is charged into an inlet portion 33 between the inner mortar 29 and the outer mortar 30, is said. The solid raw material supplied has a crushing portion 26 to be crushed by a conical mortar 27 and an opening 25a at the lower end, and the diameter of the opening 25a is smaller than the inner diameter of the outer mortar 30 of the inlet 33. The introduction portion 25 for inserting (cacaonib) from the opening 25a into the inlet portion 33 of the conical mortar 27 and the upper end portion (upper surface 29a) of the inner mortar 29 are provided to introduce the solid raw material (cacaonib). The introduction member 51 is provided with an introduction member 51 that leads from the portion 25 to the inlet portion 33, and the introduction member 51 includes at least two introduction plates (first introduction plate 51a, second introduction plate 51b), and the at least two of the introduction members 51. The introduction plate (first introduction plate 51a, second introduction plate 51b) has an inclined surface (inclined surface 51c, inclined surface 51d) inclined at a predetermined angle with respect to a horizontal plane, and the at least two introduction plates (inclined surface 51c, inclined surface 51d). The heights (h1, h2) from the center of the inclined surfaces (inclined surface 51c, inclined surface 51d) of the first introduction plate 51a and the second introduction plate 51b) to the horizontal plane of the introduction portion 25 are different. It is characterized by.

According to the above configuration, since the raw material is not clogged near the inlet of the crushed portion, the raw material that could not be introduced into the crushed portion does not overflow from the introduction portion and flow back to the supply portion, and the raw material is supplied. An appropriate amount of the object to be crushed can be supplied by suppressing the temperature rise in the part.

In the crushing apparatus according to the second aspect of the present invention, in the first aspect, the at least two introduction plates include a first introduction plate 51a and a second introduction plate 51b having a height lower than that of the first introduction plate 51a. The first introduction plate 51a is formed so that the lower end of the inclined surface 51c of the first introduction plate 51a is at the same height as or higher than the horizontal plane of the inlet portion 33, and the second introduction plate 51a is included. The introduction plate 51b may be formed so that the lower end of the inclined surface 51d of the second introduction plate 51b is at the same height as or lower than the horizontal plane of the inlet portion 33.

According to the above configuration, the solid raw material can be supplied to the crushed portion without clogging.

In the crushing apparatus according to the third aspect of the present invention, in the second aspect, the height of the upper end of the inclined surface 51d of the second introduction plate 51b is the height of the lower end of the inclined surface 51d of the first introduction plate 51a. It may be the same or higher.

According to the above configuration, the solid raw material can be stably supplied to the pulverized portion.

In the crushing apparatus according to the fourth aspect of the present invention, in any one of the first to third aspects, the introduction portion 25 has an inclined surface inclined toward the inlet portion 33, and the inclined surface has the said portion. A protrusion 52 extending toward the inlet 33 may be formed.

According to the above configuration, by providing the protrusion on the inclined surface of the introduction portion, a small amount of fixed raw material can be introduced from the introduction member to the crushed portion from the protrusion as a starting point in the introduction portion.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

Claims

A conical mortar composed of an inner mortar, which is a crushing portion having a lower mortar and an upper mortar and is a rotary mortar that rotates in synchronization with the lower mortar, and an outer mortar, which is a fixed mortar provided on the upper mortar. A crushing portion that has and is charged into the inlet portion between the inner mortar and the outer mortar and pulverizes a solid raw material having an oil content with the conical mortar.
Introduction that has an opening at the lower end, the diameter of the opening is smaller than the inner diameter of the outer mortar of the inlet, and the supplied solid raw material is charged from the opening into the inlet of the conical mortar. Department and
An introduction member provided at the upper end portion of the inner mortar and guiding the solid raw material from the introduction portion to the inlet portion is provided.
The introduction member includes at least two introduction plates.
Each of the at least two introduction plates has an inclined surface that is inclined at a predetermined angle with respect to the horizontal plane.
A crushing apparatus characterized in that the heights from the center of the inclined surface of the at least two introduction plates to the horizontal plane of the inlet portion are different from each other.
The at least two introduction plates include a first introduction plate and a second introduction plate having a height lower than that of the first introduction plate.
The first introduction plate is formed so that the lower end of the inclined surface of the first introduction plate is at the same height as or higher than the horizontal plane of the inlet portion.
Claim 1 is characterized in that the second introduction plate is formed so that the lower end of the inclined surface of the second introduction plate is at the same height as or lower than the horizontal plane of the inlet portion. The crusher according to.
The crushing apparatus according to claim 2, wherein the height of the upper end of the inclined surface of the second introduction plate is equal to or higher than the height of the lower end of the inclined surface of the first introduction plate.
The introduction portion has an inclined surface that is inclined toward the entrance portion.
The crushing apparatus according to any one of claims 1 to 3, wherein a protrusion extending toward the entrance is formed on the inclined surface.