TWI869428B - Crushing device - Google Patents

Abstract

The pulverizing device (1) includes a first introduction plate (51a) and a second introduction plate (51b) included in an introduction component (51), which include inclined surfaces (51c, 51d) inclined at a predetermined angle relative to a horizontal plane, and the heights of the horizontal plane from the center of each inclined surface (51c, 51d) to the entrance of the pulverizing part (26) are different.

Description

Crushing device

The present invention relates to a grinding device for grinding solid raw materials such as cocoa beans.

As such a pulverizing device, an electric mill disclosed in Japanese Patent Publication No. 2018-69136 is known. Such an electric mill includes: an input section where the material to be pulverized is input, including an opening for feeding to the next stage; a coarse grinding section that coarsely pulverizes the material to be pulverized from the introduction adjustment section; a fine grinding section that further finely pulverizes the material to be pulverized by the coarse grinding section; and an adjustment section that adjusts the amount of material to be pulverized introduced into the fine grinding section.

By the way, in Japanese Patent Publication No. 2018-69136, the temperature of the crushing area where the crushed material is crushed is set to be lower than the temperature at which the oil contained in the crushed material is extracted, and the temperature of the discharge area is set to be higher than the temperature at which the oil contained in the crushed material is extracted. This prevents the crushed material, i.e., the powder of cocoa beans, from being fixed to each other.

However, in general, if the cocoa beans to be ground are heated to a certain degree, they can be ground more easily. In particular, in the initial stage of grinding by the grinding device, if the cocoa beans are heated to the desired temperature (the temperature at which they can be ground efficiently), they can be ground optimally.

However, in Japanese Patent Publication No. 2018-69136, as described above, in the pulverizing area, in the initial stage of pulverizing the pulverized material (introduction area), the temperature is configured to be lower than the temperature at which the oil contained in the pulverized material is extracted. Therefore, it cannot be said that the pulverized material is heated to a temperature at which it can be pulverized efficiently.

Therefore, in the technology disclosed in Japanese Patent Publication No. 2018-69136, there is a problem that the object to be crushed cannot be crushed optimally.

Furthermore, in the initial stage of grinding of the grinding device (the introduction area of the ground material), if the cocoa beans are heated to the desired temperature (the temperature at which grinding can be performed efficiently), grinding can be performed optimally. However, if the cocoa beans flow back from the introduction area of the ground material and return to the supply part (funnel) of the cocoa beans, the cocoa beans heated to the desired temperature in the introduction area heat the other cocoa beans in the hopper. In such a case, the cocoa beans in the hopper are fixed to each other due to the seeping oil, which causes the problem that the cocoa beans cannot be supplied from the hopper to the introduction area of the ground material in an appropriate amount.

One solution of the present invention is to achieve a crushing device that can supply a suitable amount of crushed material without backflow of the crushed material heated to a temperature suitable for crushing, thereby suppressing the temperature rise of the crushed material supply part.

In order to solve the above-mentioned problem, a pulverizing device of one embodiment of the present invention comprises: a pulverizing part, including a lower mortar and an upper mortar, including: a rotating mortar, i.e., an inner mortar, which rotates synchronously with the lower mortar, and a fixed mortar, i.e., an outer mortar, which is arranged on the upper mortar, and a conical mortar, i.e., a fixed mortar, i.e., an outer mortar, which is arranged on the upper mortar, and a solid raw material having oil content which is put into an inlet part between the inner mortar and the outer mortar is pulverized by the conical mortar; an introduction part, including an opening part at the lower end, the diameter of which is smaller than the inner diameter of the outer mortar at the inlet part; , the solid raw material to be supplied is put into the inlet of the conical mortar from the opening; and the introduction component is arranged at the upper end of the inner mortar, and guides the solid raw material from the introduction part to the inlet; wherein the introduction component includes at least two introduction plates; each of the at least two introduction plates includes an inclined surface inclined at a predetermined angle relative to the horizontal plane; the heights from the center of the inclined surface of the at least two introduction plates to the horizontal plane of the introduction part are different.

According to one embodiment of the present invention, the crushed material heated to a temperature suitable for crushing does not flow back, thereby suppressing the temperature rise of the crushed material supply section and enabling the crushed material to be supplied in an appropriate amount.

1: Crushing device

11: Crushing unit

12: Insulated container

13: Funnel

14: Motor

15: Remove the cocoa paste from the rod

20: Temperature sensor

20a: Measurement Department

21: Grinding machine housing

21a: Contact terminal

22: Grinding mill housing cover

23: Stopper

23a: Bottom

24: Upper mortar support

25: Introduction

25a: Opening

26: Crushing Department

27: Conical mortar

28: Mortar

29: acetabulum

29a: Above

30: External mortar

31: Lower Mortar

32: Upper Mortar

33: Entrance

34: Material receiving part

35:Transportation channel

36: Drive transmission unit

37: Center axis

41:Metal plate

41a: Temperature measurement unit

51:Introduction components

51a: First lead-in plate

51b: Second lead-in plate

51c: Inclined surface

51d: Inclined surface

52: protrusion

111: Crushing unit

x1: Center

x2: Center

y1: horizontal plane

Figure 1 is a three-dimensional diagram of the crushing device of embodiment 1 of the present invention.

FIG2 is an exploded perspective view of the crushing unit included in the crushing device shown in FIG1.

FIG3 is a front view of a longitudinal section of a pulverizing unit included in the pulverizing device shown in FIG1.

FIG4 is a three-dimensional diagram of the lower mortar and the inner mortar included in the crushing unit shown in FIG3.

Figure 5 is a top view of the lower mortar and the inner mortar shown in Figure 4.

FIG6 is a side view of the lower acetabulum and the inner acetabulum when viewed in the direction of arrow A in the top view of FIG5.

FIG. 7 is a side view of the lower acetabulum and the inner acetabulum when viewed in the direction of arrow B in the top view of FIG. 5 .

FIG8 is a diagram for explaining the tilt angle of the first guide plate disposed on the upper portion of the mortise shown in FIG5 .

FIG. 9 is a diagram for explaining the tilt angle of the second guide plate disposed on the upper portion of the mortise shown in FIG. 5 .

Figure 10 is a top view of the crushing unit included in the crushing device of embodiment 2 of the present invention.

FIG11 is a front view of the longitudinal section of the crushing unit shown in FIG10.

(Overview of pulverization of solid raw materials)

The pulverization of solids such as cereals and beans has been used for a variety of foods because the uses of the solids have expanded dramatically. However, it is well known that it is difficult to grind the solids evenly and efficiently without deteriorating the flavor. Not only does the grinding efficiency become uneven, but the particles of the grinds lose their smoothness for wheat flour, buckwheat flour, etc., and the quality of udon and buckwheat is reduced. The excess heat applied during the grinding process also easily causes the flavor to deteriorate due to oxidation. When the grinds are subjected to excess frictional heat, the fresh flavor of tea is lost, and soy milk becomes strongly smelly. The traditional idea of slowly rotating the mortar to grind the material is very reasonable in terms of preventing the flavor of the material being processed from deteriorating by suppressing the generation of frictional heat.

The so-called pulverization method of adjusting the particle size of the pulverized material by the gap between the rotating grindstone and the fixed grindstone like a mortar is the same even if the material is changed from natural stone to ceramic or metal. This is also true for dry pulverization and wet pulverization. Buckwheat fruit pulverization in buckwheat production is performed by dry method, and soybean pulverization in tofu production is performed by wet method. Pulverization by mortar method is used in various fields. Regardless of dry or wet method, the gap between the rotating grindstone part and the fixed grindstone part is adjusted and implemented so that the target particle size can be achieved in one stage. In addition, in a grinder made of metal such as stainless steel, the clearance between the rotating blade and the fixed blade is also designed and implemented so that the crushed product is of a target size through one-stage crushing.

For example, in the case of chocolate, the raw material used is coarsely ground roasted cocoa beans called cacao nibs. When grinding in a chocolate workshop or other shop, the gap between the mortars is adjusted step by step using a stone mortar. In order to obtain the desired smooth chocolate, it is necessary to repeat the grinding several times while gradually narrowing the gap. The size of one grain of raw material, i.e. cocoa, is relatively large compared to the gap, which is disadvantageous. That is, since the cocoa is gradually finely ground, it takes time to reach the target particles.

In the grinding of cocoa, the melting point of cocoa is about 35℃. The friction heat between the mortar and the cocoa nibs during grinding is used to make the cocoa into a liquid (paste) state, and wet grinding is adopted. The temperature of the cocoa and the mortar during grinding depends on the process and is not controlled originally. If the temperature is low, the cocoa cannot flow in the mortar and solidifies in the groove, which not only cannot be ground, but also increases the load on the motor. On the other hand, if the temperature is too high, the cocoa will burn, which will reduce the quality of the cocoa.

[Implementation Method 1]

Hereinafter, an embodiment of the present invention will be described in detail. FIG. 1 is a perspective view of a pulverizing device 1 including a pulverizing unit 11 as a pulverizer of the present embodiment. FIG. 2 is an exploded perspective view of the pulverizing unit 11 shown in FIG. 1 . FIG. 3 is a front view of a longitudinal section of the pulverizing unit 11 shown in FIG. 1 . In addition, the pulverizing unit 11 is preferably made of a material having good thermal conductivity.

(Overview of the crushing device 1)

As shown in FIG1 , the pulverizing device 1 includes a pulverizing unit 11, a heat-insulating container 12, a hopper 13, a motor 14, and a cocoa paste extraction rod 15.

The grinding unit 11 is contained in the heat preservation container (temperature regulating container) 12, and the funnel 13 is installed on the grinding unit 11. The funnel 13 contains solid raw materials. In this embodiment, the solid raw materials are described as cocoa nibs. The motor 14 is provided at the bottom of the grinding device 1 to rotate the grinding part 26 of the grinding unit 11. The cocoa paste extraction rod 15 is located at the side of the grinding device 1. The cocoa paste extraction rod 15 is rotated downward, thereby being able to extract the cocoa paste (cocoa powder) of the cocoa nibs crushed by the grinding unit 11 from the extraction port 16.

In the pulverizing device 1, for cleaning, the pulverizing unit 11 is detachably engaged with the heat-insulating container 12, and the funnel 13 is detachably engaged with the pulverizing unit 11. In addition, a handle (not shown) is provided on the pulverizing unit 11, and the pulverizing unit 11 is loaded and unloaded by using the handle.

(Composition of crushing unit 11)

As shown in FIG. 2 and FIG. 3 , the crushing unit 11 includes a mill case 21. Inside the mill case 21, from top to bottom, there are provided a mill case cover 22, an upper mortar support 24, a metal plate 41, a crushing part 26, a material receiving part 34, a conveying passage 35, and a driving transmission part 36.

The mill housing cover 22 functions as a cover of the mill housing 21, and inside it, an introduction part 25 is provided that functions as a funnel receiving part for receiving the funnel 13 disposed on the grinding unit 11. The introduction part 25 receives the cocoa nibs supplied from the funnel 13 and introduces them into the grinding part 26. The introduction part 25 includes an opening 25a at the lower end.

The grinding part 26 includes a conical mortar 27 in the center and a flat mortar 28 around the conical mortar 27. The conical mortar 27 includes a rotating mortar, i.e., an inner mortar 29, and a fixed mortar, i.e., an outer mortar 30. 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 bottom to the top. The inner side of the outer mortar 30 at the upper end of the conical mortar 27 becomes the entrance 33 of the cocoa nibs. The conical mortar 27 grinds the cocoa nibs introduced from the introduction part 25 into coarse cocoa paste.

The flat mortar 28 includes a rotating mortar, i.e., a lower mortar 31, and a fixed mortar, i.e., an upper mortar 32. The lower mortar 31 is fixed to the outer periphery of the inner mortar 29 and is integrated with the inner mortar 29. The upper mortar 32 is fixed to the outer periphery of the outer mortar 30 and is integrated with the outer mortar 30. A central axis 37 is provided at the center of the inner mortar 29 and the lower mortar 31. The flat mortar 28 crushes the coarse cocoa paste formed by the conical mortar 27 into fine cocoa paste.

The material receiving part 34 directly receives the cocoa paste crushed by the crushing part 26. The conveying passage 35 conveys the cocoa paste received by the material receiving part 34 downward. The driving transmission part 36 transmits the driving force of the motor 14 to the central axis 37 of the crushing part 26 mounted on the material receiving part 34, so that the crushing part 26 (inner mortar 29 and lower mortar 31) rotates.

On the upper surface 29a of the inner mortar 29, an introduction component 51 connected to the central axis 37 is provided. The introduction component 51 is composed of two introduction plates (first introduction plate 51a, second introduction plate 51b), and rotates together with the inner mortar 29 in the opening 25a of the introduction part 25. In this way, the cocoa beans supplied from the funnel 13 can be accurately introduced into the grinding area. The details of the introduction component 51 will be described later.

The metal plate 41 is a heat conducting component that contacts the upper surface of the upper mortar 32 and transmits the temperature of the upper mortar 32. The metal plate 41 includes SUS (Steel Special Use Stainless) and is formed into a disc shape of a size that matches the size of the upper surface of the upper mortar 32. In addition, the metal plate 41 includes a temperature measuring portion 41a that is bent upward by protruding a portion of the outer edge. The temperature measuring portion 41a is preferably formed integrally with the metal plate 41, but may also be attached to the metal plate 41 as a separate component.

Since the metal plate 41 is intended to conduct the temperature of the upper mortar 32, as mentioned above, it is preferably set to the same size as the size of the upper surface of the upper mortar 32. However, if the purpose is to conduct 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. Also, as the material of the metal plate 41, SUS is used from the point of view of thermal conductivity and elasticity, but any material with thermal conductivity and elasticity may be used.

As shown in FIG3 , the temperature measuring portion 41a is formed in contact with the measuring portion 20a of the temperature sensor 20 when the crushing portion 26 is stored in a predetermined position in the mill housing 21. Here, the temperature measuring portion 41a is formed in contact with the measuring portion 20a of the temperature sensor 20 by elastic force against the acting force. In this way, if the temperature measuring portion 41a has elasticity, the temperature measuring portion 41a of the metal plate 41 can reliably contact the measuring portion 20a of the temperature sensor 20 when the crushing portion is stored in a predetermined position in the mill housing 21.

As shown in FIG3 , the temperature sensor 20 has a measuring part 20a exposed on the inner surface of the mill housing 21, and a main body arranged in a stopper 23 formed on the outer surface of the mill housing 21 and including a hollow. The main body of the temperature sensor 20 is connected to a contact terminal 21a formed at the bottom 23a of the stopper 23. The contact terminal 21a is connected to a control part in the heat preservation container 12 when the pulverizing unit 11 is set in the heat preservation container 12.

The locking portion 23 is formed on the outside of the mill housing 21 in such a way that the crushing unit 11 can be correctly set at a predetermined position in the heat-insulating container 12. In the present embodiment, the temperature sensor 20 is arranged in the locking portion 23, thereby completing the process without separately setting a component for arranging the temperature sensor 20. However, a component for arranging the temperature sensor 20 may also be separately set.

(Introduction component 51)

As shown in FIG. 5 to FIG. 7 , the introduction component 51 is disposed on the upper surface 29a of the mortar 29. The introduction component 51 includes a first introduction plate 51a and a second introduction plate 51b. The first introduction plate 51a and the second introduction plate 51b respectively include an inclined surface 51c and an inclined surface 51d inclined relative to the upper surface 29a of the mortar 29.

The first introduction plate 51a and the second introduction plate 51b can be formed integrally by processing a metal plate respectively, or can be formed as separate components.

The first introduction plate 51a and the second introduction plate 51b are arranged roughly parallel to each other as shown in FIG7 , and the height from the upper surface 29a of the inner mortar 29 is that the first introduction plate 51a is higher than the second introduction plate 51b. Specifically, the first introduction plate 51a is, as shown in FIG8 , inclined surface 51c is inclined at an angle α relative to the horizontal plane. Specifically, the inclined surface 51c is inclined at an angle α in the long side direction toward the periphery of the opening 25a of the introduction part 25. The second introduction plate 51b is, as shown in FIG9 , inclined surface 51d is inclined at an angle β relative to the horizontal plane. Specifically, the inclined surface 51d is inclined at an angle β in the long side direction toward the periphery of the opening 25a of the introduction part 25. It may be α=β or not.

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 part 25 is set to h1. In addition, 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 part 25 is set to h2. In this case, h1>h2. In addition, h1 and h2 can also be equal.

Furthermore, as shown in FIG8 , the first introduction plate 51a is formed in such a way that the lower end of the inclined surface 51c of the first introduction plate 51a becomes higher than the horizontal plane of the opening 25a of the introduction part 25 connected to the entrance 33 of the crushing part 26. In addition, 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 of the introduction part 25 connected to the entrance 33 of the crushing part 26.

In addition, the second introduction plate 51b is formed in such a manner that the lower end of the inclined surface 51d of the second introduction plate 51b becomes lower than the horizontal plane of the opening portion 25a of the introduction portion 25 connected to the entrance 33 of the crushing portion 26 as shown in FIG9. In addition, 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 portion 25a of the introduction portion 25 connected to the entrance 33 of the crushing portion 26.

The inclined surfaces 51c and 51d of the first guide plate 51a and the second guide plate 51b are inclined in opposite directions. That is, as shown in FIG6 , the first guide plate 51a is inclined from the upper end of the inclined surface 51c (right side of the figure) to the lower end of the inclined surface (left side of the figure), and the second guide plate 51b is inclined from the upper end of the inclined surface 51d (left side of the figure) to the lower end of the inclined surface (right side of the figure). In this structure, if the height of the first guide plate 51a from the upper surface 29a of the inner mortar 29 is higher than that of the second guide plate 51b, the first guide plate 51a and the second guide plate 51b can also be said to be a discontinuous screw structure. Therefore, the introduction member 51 rotates clockwise as viewed from the upper side of the upper mortar 32, thereby causing the cocoa nibs to be introduced to the grinding section 26. That is, if the inner mortar 29 rotates clockwise as viewed from the upper side of the upper mortar 32, the first introduction plate 51a and the second introduction plate 51b also rotate clockwise as viewed from the upper side of the upper mortar 32. As a result, the cocoa nibs are conveyed from the upper end side of the inclined surface 51c of the first introduction plate 51a toward the lower end side, and a part of the cocoa nibs are introduced to the grinding section 26, while the remaining cocoa nibs are conveyed to the second introduction plate 51b side and introduced to the grinding section 26 by the second introduction plate 51b. Furthermore, the cocoa nibs that are not completely introduced into the crushing section 26 by the second introduction plate 51b escape between the first introduction plate 51a and the second introduction plate 51b, and are then introduced into the crushing section 26 by the first introduction plate 51a.

The first introduction plate 51a and the second introduction plate 51b are configured such that either of them rotates to introduce the cocoa nibs into the grinding section 26, and therefore are not limited to the shapes shown in FIG8 , FIG9 , etc. In short, the introduction member 51 is not limited to the first introduction plate 51a and the second introduction plate 51b, and any configuration is acceptable as long as the cocoa nibs are intermittently supplied to the grinding section 26 by rotation.

In order to introduce the cocoa nibs into the grinding section 26 continuously and stably, the height of the upper end of the second introduction plate 51b is preferably almost the same as the height of the lower end of the first introduction plate 51a. 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 must be lower than the height of the upper end of the first introduction plate 51a. This is because the raw material, i.e., the cocoa nibs, cannot be pushed into the grinding section 26 continuously.

Furthermore, if the inclination angle of the first introduction plate 51a and the second introduction plate 51b becomes too large, problems such as reduced supply capacity and backflow may occur. Therefore, the inclination angle of the first introduction plate 51a and the second introduction plate 51b is preferably set to an inclination angle as if multiple cocoa nibs are entering. That is, the inclination angle of the first introduction plate 51a and the second introduction plate 51b is changed according to the size of the raw material.

(Effect)

As described above, the introduction member 51 included in the upper surface 29a of the inner mortar 29 of the conical mortar 27 is composed of two first introduction plates 51a and second introduction plates 51b. These first introduction plates 51a and second introduction plates 51b rotate so as to be tilted so that the cocoa nibs are sequentially transferred from the upper part. In this way, the cocoa nibs can be stably supplied to the entrance 33 of the conical mortar 27.

According to the above configuration, among the cacao nibs introduced into the pulverizing section 26 by the first introduction plate 51a, the cacao nibs that have not been completely introduced into the pulverizing section 26 are pushed into the pulverizing section 26 by the second introduction plate 51b. Furthermore, the cacao nibs that have not been completely introduced into the pulverizing section 26 by the second introduction plate 51b escape into the space between the first introduction plate 51a and the second introduction plate 51b. In other words, in the configuration in which the cacao nibs are continuously introduced into the pulverizing section 26 like a screw, there is a problem that the amount of cacao nibs supplied to the pulverizing section 26 becomes excessive, and the cacao nibs are clogged near the inlet 33 of the pulverizing section 26. However, as in the above-mentioned configuration, if the first introduction plate 51a and the second introduction plate 51b are used to intermittently introduce the cocoa nibs into the grinding section 26, the supply amount to the grinding section 26 becomes constant at all times, and the clogging of the cocoa nibs near the inlet 33 of the grinding section 26 does not occur.

Thus, in the pulverizing device 1 having the above structure, since there is no blockage of the cocoa nibs near the inlet 33 of the pulverizing section 26, the cocoa nibs that are not completely introduced into the pulverizing section 26 do not overflow from the introduction section 25 and flow back into the funnel 13.

Usually, the area near the grinding section 26 is heated to a temperature suitable for grinding the cocoa nibs, so even the cocoa nibs not introduced into the grinding section 26 may be heated. Therefore, if the cocoa nibs near the grinding section 26 return to the hopper 13 via the introduction section 25, the hopper 13 is heated, and the cocoa nibs in the hopper 13 are heated, causing the oil to seep out and solidify, resulting in a problem that the cocoa nibs cannot be supplied from the hopper 13 in an appropriate amount.

However, as in the above-mentioned grinding device 1, if the cocoa nibs are not clogged near the inlet of the grinding section 26, the above-mentioned problem caused by the cocoa nibs overflowing from the inlet 25 and returning to the funnel 13 does not occur.

In this way, the cocoa nibs required for grinding in the grinding section 26 are introduced into the grinding section 26 in order, and the unnecessary cocoa nibs can wait in the upper part, which can ensure the stable grinding performance of the cocoa nibs. Here, the grinding performance refers to the fineness and generation speed of the ground material.

Therefore, since only the raw material, i.e., cocoa nibs, is replenished, the appropriate amount of cocoa nibs can be always supplied to the grinding section 26 by the rotation of the introduction member 51, which can save the effort of adjusting the amount of raw material input and the grinding performance as in the past. In addition, in order to stabilize the supply amount of raw materials, the effort of each input of raw materials (such as the opening and closing of the gate) is saved.

The opening 25a of the introduction part 25 is inclined. The first introduction plate 51a is provided at the position where the first introduction plate 51a intersects (in the height direction) with the inclined part, so that the cocoa grains are introduced into the opening 25a from the center of the first introduction plate 51a to the height portion of the opening 25a (height h1 in FIG. 8 ). In this case, the height h1 is preferably larger than the size of one cocoa grain.

Furthermore, the cocoa nibs pushed out in the circumferential direction without being introduced into the opening 25a are moved onto the inclined surface 51c of the first introduction plate 51a due to the rotation of the first introduction plate 51a, thereby avoiding the force applied to the cocoa nibs and moving, thereby generating a longitudinal circulation. This can prevent the cocoa nibs from clogging (bridge) in the path from the opening 25a of the introduction part 25 to the grinding part 26, and prevent the cocoa nibs from being fixed in the path.

[Implementation Method 2]

Other embodiments of the present invention are described below. In addition, for the convenience of explanation, the same symbols are given to the components with the same functions as those described in the above embodiments, and their descriptions are not repeated.

In this embodiment, a grinding device that can reduce clogging caused by accumulation of cocoa nibs in the introduction section 25 is described.

Generally speaking, the introduction part 25 introduced from the funnel 13 to the crushing part 26 is cylindrical, and raw materials are accumulated on the cylindrical surface, which becomes a cause of clogging. Therefore, in the crushing unit 111 of this embodiment, as shown in Figures 10 and 11, an inclined surface is formed to incline the vicinity of the opening 25a of the introduction part 25 toward the inlet part 33, and a protrusion 52 is provided extending from the inclined surface toward the inlet part 33.

The protrusion 52 is provided on the inclined surface of the introduction part 25, so that a small amount of cocoa nibs can be introduced from the introduction part 51 to the grinding part 26 by setting the protrusion 52 as a starting point in the introduction part 25.

In this way, if the cocoa nibs are supplied to the grinding section 26 in small amounts, the clogging near the inlet 33 of the cocoa nibs of the grinding section 26 can be reduced, and the cocoa nibs are not introduced into the grinding section 26 and piled up in the introduction section 25. Therefore, the clogging of the grinding section 26 due to the accumulation of cocoa nibs is not generated.

[Summary]

The pulverizing device of the scheme 1 of the present invention comprises: a pulverizing section 26, including a lower mortar 31 and an upper mortar 32, comprising: a conical mortar 27 having a rotating mortar, i.e., an inner mortar 29, which rotates synchronously with the lower mortar 31, and a fixed mortar, i.e., an outer mortar 30, which is arranged on the upper mortar 32, wherein the solid raw material having oil content which is fed into the inlet 33 between the inner mortar 29 and the outer mortar 30 is pulverized by the conical mortar 27; an introduction section 25, including an opening 25a at the lower end, wherein the diameter of the opening 25a is smaller than the inner diameter of the outer mortar 30 of the inlet 33, wherein the solid raw material (cocoa nibs) to be fed is fed into the inlet 33 of the conical mortar 27 from the opening 25a; and an introduction member 51, which is arranged at the The upper end portion (upper surface 29a) of the inner mortar 29 guides the solid raw material (cocoa nibs) from the introduction portion 25 to the inlet portion 33; wherein the introduction component 51 includes at least two introduction plates (first introduction plate 51a, second introduction plate 51b); the at least two introduction plates (first introduction plate 51a, second introduction plate 51b) include inclined surfaces (inclined surfaces 51c, inclined surfaces 51d) inclined at a predetermined angle relative to the horizontal plane; the heights (h1, h2) from the center of each inclined surface (inclined surface 51c, inclined surface 51d) of the at least two introduction plates (first introduction plate 51a, second introduction plate 51b) to the horizontal plane of the introduction portion 25 are different.

According to the above structure, since there is no clogging of the raw material near the inlet of the crushing part, the raw material that is not completely introduced into the crushing part does not overflow from the introduction part and flow back to the supply part, the temperature rise of the raw material supply part can be suppressed, and the crushed material can be supplied in an appropriate amount.

The pulverizing device of the second scheme of the present invention may also be that in the above-mentioned scheme 1, the at least two introduction plates include a first introduction plate 51A and a second introduction plate 51b having a lower height than the first introduction plate 51a; the first introduction plate 51a is formed in such a way that the lower end of the inclined surface 51c of the first introduction plate 51a is the same height as or higher than the horizontal plane of the inlet 33; the second introduction plate 51b is formed in such a way that the lower end of the inclined surface 51d of the second introduction plate 51b is the same height as or lower than the horizontal plane of the inlet 33.

According to the above structure, the solid raw material can be supplied to the crushing part without clogging.

The crushing device of scheme 3 of the present invention may also be such that, in the above scheme 2, the height of the upper end of the inclined surface 51d of the second introduction plate 51b is the same as or higher than the height of the lower end of the inclined surface 51d of the first introduction plate 51a.

According to the above structure, the solid raw material can be stably supplied to the crushing part.

The pulverizing device of Scheme 4 of the present invention may also be that in any of the above-mentioned Schemes 1 to 3, the introduction portion 25 includes an inclined surface inclined toward the inlet portion 33, and a protrusion 52 extending toward the inlet portion 33 is formed on the inclined surface.

According to the above structure, a protrusion is provided on the inclined surface of the introduction part, so that a small amount of fixed raw material can be introduced from the introduction part to the crushing part by setting the protrusion as a starting point in the introduction part.

The present invention is not limited to the above-mentioned embodiments, and various changes can be made within the scope of the patent application. The embodiments obtained by appropriately combining the technical methods disclosed in different embodiments are also included in the technical scope of the present invention. In addition, the technical methods disclosed in each embodiment can be combined to form new technical features.

11: Crushing unit

21: Grinding machine housing

22: Grinding mill housing cover

23: Stopper

24: Upper mortar support

25: Introduction

26: Crushing Department

27: Conical mortar

28: Mortar

29: acetabulum

30: External mortar

31: Lower mortar

32: Upper Mortar

41:Metal plate

41a: Temperature measurement unit

51:Introduction components

Claims (4)

A pulverizing device comprises: a pulverizing part, including a lower mortar and an upper mortar, comprising: a conical mortar having a rotating mortar, i.e., an inner mortar, which rotates synchronously with the lower mortar, and a fixed mortar, i.e., an outer mortar, which is arranged on the upper mortar, wherein a solid raw material having oil content is fed into an inlet between the inner mortar and the outer mortar and is pulverized by the conical mortar; an introduction part, including an opening at the lower end, wherein the diameter of the opening is smaller than the inner diameter of the outer mortar at the inlet, wherein the solid raw material to be supplied is fed into the inlet of the conical mortar from the opening; and an introduction component, which is arranged on the upper end of the inner mortar and guides the solid raw material from the introduction part to the inlet; wherein the introduction component comprises at least two introduction plates; the at least Each of the two introduction plates includes: a convex portion protruding upward from a specified horizontal plane, i.e., a reference plane, and an inclined surface arranged above the convex portion and inclined at a predetermined angle relative to the horizontal plane; the heights from the center of the inclined surface of the at least two introduction plates to the horizontal plane of the entrance portion are different, and the at least two introduction plates include: a first introduction plate, which includes a first convex portion and a first inclined surface; and a second introduction plate, which includes a second convex portion and a second inclined surface, which protrudes in the same direction as the first convex portion of the first introduction plate and has a lower height than the first introduction plate, and the first inclined surface of the first introduction plate and the second inclined surface of the second introduction plate have opposite inclination directions. A pulverizing device as described in claim 1, wherein the first introduction plate is formed in such a way 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; and the second introduction plate is formed in such a way 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. A crushing device as described in claim 2, wherein the height of the upper end of the inclined surface of the second introduction plate is the same as or higher than the height of the lower end of the inclined surface of the first introduction plate. A pulverizing device as described in any one of claims 1 to 3, wherein the introduction portion includes an inclined surface inclined toward the inlet portion, and a protrusion extending toward the inlet portion is formed on the inclined surface.

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