JP5938447B2 - Crusher - Google Patents

Description

    The present invention relates to a wet and dry pulverizer that pulverizes various food materials and chemicals into powder.

    The pulverizer is a machine commonly used in the industry, and is applied to produce powders of metals, foodstuffs, chemicals, cosmetics, fertilizers, stones, chemical substances, etc. by pulverization or polishing.

    Also, most conventional pulverizers are designed to perform dry pulverization. For example, the conventional pulverizer disclosed in FIG. 8 includes an upright drum 8, and the position of the inner center of the drum 8 is a pulverization chamber 81. The crushing chamber 81 is provided with crushing means 90 including a main shaft 91 and a swingable cutter 92. Conductive means 93 is provided below the drum bottom surface 85, power is transmitted from the conductive means 93 to the cutter 92 via the main shaft 91, and the cutter 92 is driven to pulverize the crushed material.

    Separately, an electric motor 82 is provided at the upper end of the crushing chamber 81 to rotate the classification blade 83. The classification blade 83 has a function of classifying powder particles according to size.

    Further, a gas extraction pipe 84 is connected to the upper part of the grinding chamber 81 from the outside. A gas extraction means (not shown) is provided at the other end of the gas extraction tube 84, and the fine powder particles polished by the pulverization means 90 are extracted and collected by extracting the gas.

  The conventional dry pulverizer disclosed in FIG. 8 achieves the function as a pulverizer by adding other means other than the pulverizer. For example, a high-output gas extraction means is required, and fine powder particles are extracted from above and collected by sieving according to size. Therefore, the structure of the conventional dry pulverizer having such a structure is complicated.

  In addition, the most prominent drawback found in the dry pulverizer described above is that the environmental conditions for pulverizing the powder are limited. That is, pulverization must be performed in a dry environment as long as the powder can be pulverized. Therefore, a very expensive process called a drying process must be employed. Furthermore, when grinding or cutting, it cannot be applied to special crushed materials, and its application range is greatly limited. For example, when rice material is used as a pulverizer, a relatively high starch damage rate occurs. For this reason, the quality of powder particles such as non-uniform particle size is deteriorated.

  Also, the dry pulverizer cannot be applied to soft or high moisture content materials. When pulverizing food ingredients, the ingredients contain ingredients such as fats, sugars, fibers, fragrances, and the specific gravity of crushed materials, moisture, the range of particle sizes to be powdered, loss of ingredients, oxidation In consideration of factors such as influence, the range in which powdering is possible is extremely narrow, and known pulverizers do not overcome such problems.

  Moreover, the fats and oils and saccharides which are contained by crushing and crushing the raw material containing a lot of fats or sugars are pressed out and adhere to the grinding chamber. In the case of spices, scent components are released, generating unusable powder, and some materials are wasted.

Furthermore, conventional roll-type pulverizers are often pulverized by drying the material and reducing the moisture content. In this method, when the dried pulverized material is pulverized, the pulverization efficiency can be increased and the particles of the powder can be made finer, and the utility value can be increased in terms of cost. However, the material characteristics of the solid material may be impaired as the grinding efficiency is increased. In addition, the method using a pulverizing roll has a mechanical specification that inevitably limits the range of characteristics of the pulverized material in view of its principle. In other words, if the grinding roll provided in the grinding part is rotated at a high speed to increase the action of the grinding force on the solid material, the amount of heat generated in the grinding part increases, so that the material properties are impaired by the heat of grinding. There is. Next, the characteristics of the material to be pulverized include a heavy specific material, a light specific material, a hard material, a soft material, a high water content, and the like. For example, if a light or soft object such as paper is made into powder, it will be compressed as it passes through the grinding part or inserted into the roll part by swirling flow by rotating the grinding roll or pulling by blower on the grinding system. Often it is shaped as it is, and it is not a method of adapting any material. Similarly, it is necessary for the pulverizing roll to make the raw material finely contact the fixed plate, so that the outer peripheral surface of the roll needs to be in uniform contact. However, the input size must be gradually reduced to obtain the desired powder. Methods such as providing several stages of rolls or forcibly applying pressure to the rolls have been adopted.

However, in order to cope with the above-mentioned problems, for example, it is not preferable to increase the number of steps by increasing the pulverization process, increase the size and complexity of the entire apparatus, or add a dedicated machine separately. . Therefore, there is a demand for a configuration having versatility capable of meeting the demands of high-mix low-volume / medium-volume production without increasing the complexity and size.

  In addition, the conventional dry pulverizer described above has other disadvantages. That is, since powder particles are extracted and collected from above, a large amount of air and electrical energy are required. In particular, the amount of electrical energy consumed by the system relating to the gas extraction means is very large. In addition, maintenance of a gas guiding system and the like requires a very high cost, and also requires a considerable space for maintenance.

  Further, the known dry pulverizer has many members such as a conduit to be attached. Therefore, after pulverizing one type of pulverized material, if pulverized material with different characteristics is pulverized, a member attached to the dry pulverizer to prevent the remaining pulverized material from being mixed into the next pulverized material. The remaining powder must be removed. Such work is cumbersome and time consuming. This point is also a drawback of the known dry pulverizer.

In view of the above-described conventional technology, a pulverizer having both a dry type and a wet type pulverization method is desirable. However, such a pulverizer has not been put into practical use yet. In recent years, awareness of environmental conservation has been raised, but energy savings, material drying processes, and equipment space savings are also required for machinery and equipment. For the pulverizer, it is desired to simplify the mechanical structure.

  However, problem solving is practically difficult. The main reason is that most of the conventional pulverizing and polishing means employs a rotating polishing system. According to such a method, when the charged crushed material comes into contact with the stator by centrifugal force, the crushed material is different between the contact surface on the outer periphery of the roll and the stator because the particle size of the crushed material is different. Entering, centrifugal force is generated by the weight of the pulverizing roll, repeatedly crushing, crushed and gradually becomes finer. Therefore, in order to obtain the required powder characteristics and particle size, it is necessary to design the gap between the grinding and polishing means and the stator so as to have an upper and lower difference.

Therefore, it is hoped to develop a rotating crushing and polishing device that can adjust the load between the crushing means, the length of the crushing roll, and the gap between the stators in advance, and can be pulverized based on the shape of the outer peripheral surface of the crushing roll. It is rare.

It is an object of the present invention to provide a pulverizer that is both wet and dry, can be widely applied to various pulverizers having different characteristics, and can be efficiently pulverized without impairing the material properties of the pulverizer. And

In addition, the present invention can meet the demands of high-mix low-volume / medium-volume production without increasing the size or complexity of the apparatus, and is excellent in versatility, and reduces the material drying process and running cost. It is an object of the present invention to provide a pulverizer that can handle the above.

Another object of the present invention is to provide a pulverizer in which residual pulverized material can be easily removed.

  Therefore, as a result of intensive research in view of the drawbacks found in conventional pulverizers, the present inventor has found that the inlet of the object to be pulverized and the gas feed to the upper end side of the cylindrical body with the upper part being a pulverization chamber and the lower part being a discharge port. The main shaft, which is formed with the inlet and has one end from the upper part of the crushing chamber with power transmission means and the other end with crushing means, is rotatably supported, and the main shaft has an internal hole and a rectangle through which the crushed material passes. A lower plate having a plurality of guide holes, and an upper plate having a passage hole through which the crushed material passes and a universal joint provided at a position corresponding to the guide hole. Between the lower plate, a plurality of rolls having a central axis whose upper end is connected to the universal joint and whose lower end is inserted into the guide hole are provided, and the rolls of the crushing means on the inner wall of the crushing chamber are provided. An annular stator provided along the circumference at a corresponding position, and the central axis A pulverizer comprising: a packing formed by fitting and closely contacting both upper and lower end faces of the pulverizing roll and integrally forming protrusions at positions close to the upper and lower end faces of the pulverizing roll. The present invention has been completed based on such findings, focusing on the problems that can be solved. The present invention will be described below.

The pulverizer according to claim 1 has an upper part as a pulverization chamber, and forms a material to be pulverized and a gas inlet at positions close to the upper end of the pulverization chamber. A cylindrical main body that connects an input pipe and connects a gas inlet pipe to the gas inlet , and has a lower part of the pulverization chamber as a discharge port for the object to be crushed,
Inserted from the top of the crushing chamber and rotatably supported through a bearing, provided with a power transmission means at one end located outside the crushing chamber, and provided at one end located inside the crushing chamber A main shaft formed by fitting grinding means;
A lower plate having an internal hole through which an object to be crushed and a plurality of rectangular guide holes are formed, a through hole through which crushed material passes, and a universal joint at a position corresponding to the guide hole. A plurality of upper plates provided on the main shaft, the upper plate being connected to the universal joint between the upper plate and the lower plate, and a lower end having a central shaft inserted into the guide hole. A pulverizing roll, the pulverizing means for rotating the main shaft by receiving power transmitted through the power transmitting means,
An annular stator provided along the circumference at a position corresponding to the grinding roll of the grinding means on the inner wall of the grinding chamber;
A packing that is fitted on the central axis and is in close contact with the upper and lower end faces of the pulverizing roll, and in which protrusions are integrally formed at positions close to the upper and lower end faces of the pulverizing roll.

A pulverizer according to a second aspect forms a conical crushed material entry space between the inner peripheral surface of the stator and the outer peripheral surface of the roll in the first aspect.

According to a third aspect of the present invention, the inner diameter of the wall surface extending downward from the periphery in the pulverization chamber of the first aspect is gradually reduced to form a hopper portion.

According to a fourth aspect of the present invention, there is provided a pulverizer having the discharge port according to the first aspect provided on a side surface of the lower end portion of the pulverization chamber and a discharge pipe configured to discharge a material to be crushed on the lower end side surface of the pulverization chamber. Provide.

  According to a fifth aspect of the present invention, in the pulverizer according to the first aspect, the inner hole in the first aspect is formed in the adjustment block, and the adjustment block is detachably provided in the lower plate.

  The pulverizer according to the present invention is practical because it can cope with both dry pulverization and wet pulverization, and has an advantage that convenience in use can be obtained. In addition, a method was adopted in which crushed material was introduced from above the cylindrical main body, crushed, cut, stretched, polished, and discharged from below the cylindrical main body or from the lower adjustment plate or side surface using gravity. Therefore, compared to the conventional method of extracting and collecting together with gas from the upper side, not only the energy consumed is reduced, but there is no need to install a ventilation system such as a gas extraction means as in the conventional pulverizer, so surplus The equipment cost can be reduced without consuming energy, and the installation space occupied by the machine equipment can also be reduced. It has the advantage that it can be done at a low cost.

  In addition, since the pulverizer according to the present invention can be applied to wet pulverization, the amount of heat generated in the pulverization process can be suppressed. Therefore, when the food material is a crushed material, the starch damage rate is reduced, and the material is less likely to be destroyed or altered. Furthermore, it can be widely applied regardless of the moisture content of the crushed material, and has the advantage of having wide applicability and versatility.

  In the pulverizer according to the present invention, the pulverized material is introduced from the inlet through the direction of the tangent line. Since the material to be crushed contains moisture, the impact force is dispersed evenly on the inner peripheral surface of the crushing chamber on average, and automatically enters between the crushing roll and the stator to be crushed. There are advantages that the time for pulverization and polishing can be shortened and the operating rate of the pulverizer can be increased.

  Furthermore, by tilting the stator in the present invention, a relatively large cone-shaped space is formed between the peripheral surface of the grinding roll. Therefore, there is an advantage that the crushed material can easily enter and can be finely polished, and the quality of pulverization and polishing can be improved.

  In addition, since the invention provides a packing having protrusions 451 on both upper and lower end faces of the crushing roller, when the crushing roller rotates, the protruding part of the packing slightly extends from the end face of the crushing roll. A gap is formed slightly apart, and heat generated by friction can be attenuated by the action of the gap, and the temperature of the frictional heat conducted from the grinding roller 43 can be controlled efficiently. When the pulverizing roll is stopped, the protruding portion of the packing returns to a state of being in close contact with the end face of the pulverizing roll. When the protrusion and the end face of the pulverizing roll are completely in close contact with each other, the water is prevented from flowing to the central axis when cleaning is performed or when the moisture of the powder itself is released. Accordingly, there is an advantage that the cleaning work after use becomes easy and the service life of the parts can be extended.

It is explanatory drawing which showed the cross-sectional structure of the grinder by this invention. It is the perspective view which showed the grinding | pulverization means in this invention. It is explanatory drawing which showed the operation | movement of grinding | pulverization and grinding | polishing in the grinder of this invention. It is the perspective view which showed the grinding | pulverization roll in this invention. It is explanatory drawing which showed the relationship between the grinding | pulverization roll in this invention, packing, and a center axis | shaft. It is the local expansion explanatory drawing which showed the crushing roll and packing which are disclosed by FIG. 4b. It is the other local expansion explanatory view which showed the crushing roll and packing which are disclosed by FIG. 4b. It is explanatory drawing which showed the relationship between the cylindrical main body in this invention, and a to-be-ground part injection pipe. It is explanatory drawing which showed the state which grind | pulverizes the crushing material of the grinder by this invention. It is explanatory drawing which showed the cross-section of the grinder by 2nd Embodiment. It is explanatory drawing which showed the cross-section of the conventional dry-type grinder.

This invention is for both wet and dry use, and can be widely applied to various pulverizers with different characteristics without increasing the size or complexity of the apparatus, and without damaging the material properties of the crushed material. An object of the present invention is to provide a pulverizer capable of reducing the cost and easily removing the remaining crushed material, the upper part of the cylindrical main body having an upper part as a pulverization chamber and a lower part as a discharge port, A main shaft that is formed with a gas inlet and has a power transmission means at one end from the upper part of the grinding chamber and a grinding means at the other end is rotatably supported, and an inner hole and a rectangular shape through which the crushed material passes A lower plate provided with a plurality of guide holes exhibiting the same, and an upper plate provided with a passage hole through which the crushed material passes and provided with a universal joint at a position corresponding to the guide hole. And the lower plate between the upper end and the universal plate A plurality of pulverizing rolls connected to the joint and having a central axis with a lower end inserted into the guide hole, along the circumference at a position corresponding to the pulverizing rolls of the pulverizing means on the inner wall of the pulverizing chamber A ring-shaped stator provided on the center shaft and in close contact with the upper and lower end faces of the grinding roll, and a protrusion is integrally formed at a position close to the upper and lower end faces of the grinding roll. And packing. In order to explain the structure and characteristics of the pulverizer, specific examples will be given and described in detail below with reference to the drawings.

  1 and 5 disclose a pulverizer according to the present invention. According to the disclosure of the drawings, a cylindrical main body 10 is provided, an upper portion is a pulverization chamber 11, and a lower portion of the pulverization chamber 11 is a discharge port 114 for an object to be pulverized. And The discharge port 114 forms the hopper portion 12 by gradually reducing the inner diameter of the wall surface extending downward from the periphery.

  Further, at a position close to the upper end 111 of the pulverization chamber 11, a material inlet 112 and a gas inlet 113 are formed, respectively, and the inlet 112 and the gas inlet 113 are formed as necessary. The crushed material input pipe 13 and the gas supply pipe 14 are connected to each other. The inlet 112 and the gas inlet 113 are located on the same line where the center points of the ridges pass horizontally through the crushing chamber 11, and the material to be crushed supplied from the inlet 112 and the gas inlet 113 are inserted. Gas enters the inside from the upper end of the inner wall of the crushing chamber 11.

  As disclosed in FIG. 1, the main shaft 20 is inserted from the upper part of the crushing chamber 11 and is rotatably supported via a bearing 21. A power transmission means 30 is provided at one end of the main shaft 20 located outside the grinding chamber 11. The power transmission means 30 is a well-known device, and may be configured to transmit the power of the electric motor by a belt drive as shown in the figure, for example. Moreover, the grinding | pulverization means 40 is fitted in the end located in the grinding | pulverization chamber 11 inside the main axis | shaft 20, as disclosed in FIG.

  As shown in FIGS. 1, 2, and 3, the crushing means 40 includes an upper plate 42 and a lower plate 41 provided on the main shaft 20, and receives power transmitted through the power transmission means 30 to receive the main shaft 20. Rotates. The upper plate 42 is provided with a passage hole 421 through which the crushed material passes, and the lower plate 41 is provided with an internal hole 4110 through which the crushed material passes. The lower plate 41 is provided with a plurality of rectangular guide holes 412, and the upper plate 40 is provided with a universal joint 44 at a position corresponding to the guide holes 412 of the lower plate 41.

As disclosed in FIG. 2, the inner hole 4110 of the lower plate 41 described above may be provided on the adjustment block 411. The adjustment block 411 is detachably provided on the lower plate 41.
Therefore, in order to polish the crushed material in an optimum time, when the internal hole 4110 having a different inner diameter is required by a different crushed material, by replacing the adjustment block 411 with the inner hole 4110 having a different inner diameter, The purpose of grinding the crushed material in an optimal time can be achieved.

  A plurality of pulverizing rolls 43 having a central shaft 431 are provided between the upper plate 41 and the lower plate 41. The upper end 4312 of the central shaft 431 of the pulverizing roll 43 is connected to the universal joint 44, and the lower end 4311 is connected to the lower plate 4311. The plate 41 is inserted into the guide hole 412. The teeth 430 of the grinding roll 43 disclosed in FIG. 4a vary depending on the characteristics of the different grinding materials.

  The pulverizer according to the present invention is both wet and dry. When special pulverizers are crushed, moisture is released. The crushed material itself is viscous. This is especially applicable when the crushed material is changed frequently. In this case, jetting water and washing is the fastest selection for cleanliness. Therefore, under the condition that the pulverizing roll 43 rotates at high speed, friction heat is generated by the rotation, and a design for the purpose of preventing the crushed material from being damaged by the friction heat is required. In the case of stopping, a shaft rod seal structure for efficiently isolating moisture and preventing foreign matter from entering is extremely important. In this case, when a well-known general contact-type oil seal currently used in the market is used, when the pulverizing roll of the pulverizing means 40 rotates at a high speed as disclosed in FIG. Cause damage and contamination. Therefore, it is necessary to design a new seal structure.

  As shown in FIGS. 3, 4 b, and 4 c, the two packings 45 are fitted on the center shaft 431 and are in close contact with the upper and lower end surfaces 432 of the grinding roll 43. In the packing 45, protrusions 451 are integrally formed at positions close to the upper and lower end surfaces 432 of the grinding roll 43. By forming the protrusions 451, the packing 45 further has elasticity. Further, a concave portion 452 is formed at a substantially intermediate position in the vertical direction of the packing 45. The packing 45 prevents moisture from entering between the crushing roll 43 and the central shaft 431 by the protrusions 451 coming into close contact with both the upper and lower end surfaces 432 of the crushing roll 43.

  As shown in FIGS. 1, 2, and 3, an annular stator 50 is provided on the inner wall of the crushing chamber 11 along the circumference at a position corresponding to the crushing roll 43 of the crushing means 40. Breaking, cutting, stretching, polishing and the like are performed on the crushed material introduced between the stator 50 and the pulverizing roll 50. Further, the stator 50 and the grinding roll 43 are not in contact with each other. That is, an inclined or cone-shaped crushing material entry space 60 is formed between the outer peripheral surface of the stator 50 and the outer peripheral surface of the crushing roll 43 so that the introduced crushing material can easily enter, and the crushing roll The crushed material introduced between the lower half of 43 and the stator 50 is crushed, cut, stretched, polished, etc., and further polished.

  As disclosed in FIGS. 3, 4 b, and 4 d, when the pulverizing roll 43 of the pulverizing means 43 rotates, the protruding portion 451 of the packing 45 is slightly slightly separated from the end surface 432 of the pulverizing roll 43 to form a gap S. . When actually measured, the gap is about 0.1 mm. By the action of the gap S, heat generated by friction can be attenuated, and the temperature of the frictional heat conducted from the grinding roller 43 can be controlled efficiently.

  When the crushing roll 43 is stopped, the protrusions 451 of the packing 45 return to a state of being in close contact with the end surface 432 of the crushing roll 43 as disclosed in FIG. 4c. When the protrusion 451 and the end face 432 of the grinding roll 43 are completely in close contact with each other, the water is prevented from flowing to the central shaft 431 when cleaning is performed or when the moisture of the powder itself is released. Therefore, the cleaning work after use becomes easy, and the service life of the parts can be extended.

As shown in FIGS. 1, 2, and 3, a material to be crushed 70, which is a pulverized material, is fed from a cutting line direction through a material inlet 112 formed at a position close to the upper end of the crushing chamber 11. Since the object to be crushed 70 contains moisture, the impact force is dispersed evenly and averagely on the inner peripheral surface of the crushing chamber 11, and from the passage hole 421 of the upper plate 42 to the central crushing means 40 on the average. Fall.

As shown in FIGS. 1, 2, and 3, in the pulverizer according to the present invention, a material 70 to be crushed is input from a charging port 112 provided at the upper end of the pulverizing chamber 11 along the cutting line direction. Since the material 70 to be crushed contains water, it is uniformly and evenly applied to the inner peripheral surface of the pulverization chamber 11 with an impact force. At the same time, it passes from the passage hole 421 of the upper plate 42 to the center of the pulverization chamber 11. It falls on the average with respect to the crushing means 40 located.

  When the crushing means 40 is rotated by being driven by the main shaft 20, the plurality of crushing rolls 43 are urged outward under the action of centrifugal force. In this case, as disclosed in FIG. 3, the upper end 4312 of the central shaft 431 of the grinding roll 43 is pushed outward with the universal joint 44 as a fulcrum, and the lower end 4311 is outward along the guide hole 312 of the lower plate 41. Extruded. For this reason, energy for breaking the object 70 to be crushed is generated in the grinding roll 43, and the object 70 existing between the stator 50 and the grinding roll 43 is broken.

  In addition, the crushed roll 43 breaks down, and at that moment, friction is generated between the stator 50 and the pulverized roll 43, and the non-pulverized product 70 is stretched. Therefore, resistance to crushing is generated between the stator 50 and the pulverizing roll 43 in the object 70 to be crushed and crushed.

  Further, since the grinding roll 43 itself rotates, it has a cutting force and cuts the object 70 to be ground.

Further, a rotating body is formed by the entire main shaft 20, the upper plate 42, and the lower plate 41, and a polishing force is generated between the stator 50 and the object to be crushed 70 is polished into a fine powder. When the object to be crushed 70 becomes a fine powder having a preset size, it exits from the discharge port 114 below the cylindrical body 1 by gravity, and the inner diameter gradually contracts and is moved downward by the hopper 12 and collected.

The crushing roll 43 disclosed in FIG. 1 has an upper end 4312 of the central shaft 431 as a fulcrum and a lower end 4311 as a moving end. However, as disclosed in FIG. 6, for example, the positional relationship between the guide hole 412 of the lower plate 41 and the universal joint 44 of the upper plate 42 can be exchanged. In the present invention, such a change is easy and has the effect of the same party. However, since those skilled in the art can easily conceive and make it, detailed description will be omitted in the embodiments.

FIG. 7 discloses another embodiment. According to the disclosure of the drawings, the lower end of the main shaft 20 of the crushing means 40 is connected to the power transmission means 30 of the transmission belt drive, and an electric motor or the like is used as a power source. Further, in Example 2, the discharge port 114 is provided below as disclosed in FIG. 1, but in the second embodiment disclosed in FIG. A tube 15 is provided to discharge the material 70 to be crushed.

Moreover, as disclosed in FIGS. 6 and 7, in any embodiment, the stator 50 forms an inclined surface as necessary, and a conical storage space between the outer periphery of the roll cutter 40. 60 can be formed.

DESCRIPTION OF SYMBOLS 10 Cylindrical main body 11 Crushing chamber 111 Upper end 112 Input port 113 Gas inlet 114 Discharge port 12 Hopper part 13 Ground part input pipe 14 Gas inlet pipe 15 Discharge pipe 20 Main shaft 30 Power transmission means 40 Crushing means 41 Lower plate 411 Adjustment Block 4110 Internal hole 412 Guide hole 42 Upper plate 421 Passing hole 43 Grinding roll 430 Teeth 431 Central axis 4311 Lower end 4312 Upper end 432 End surface
44 Universal joint 45 Packing 451 Protruding part 452 Concave part
50 Stator 60 Crushed material entry space 70 Object to be crushed 8 Drum 81 Crushing chamber 82 Electric motor 83 Sieving blade 84 Gas extraction pipe 90 Crushing means 91 Main shaft
92 Cutter 93 Conducting means S Clearance

Claims (5)

The upper part is a pulverization chamber, the inlet of the object to be crushed and the gas inlet are formed at positions close to the upper end of the pulverization chamber, and the object to be crushed is connected to the inlet, and the gas supply A cylindrical main body having a gas inlet pipe connected to the inlet and having a lower portion of the pulverization chamber as a discharge port for the object to be crushed,
Inserted from the top of the crushing chamber and rotatably supported through a bearing, provided with a power transmission means at one end located outside the crushing chamber, and provided at one end located inside the crushing chamber A main shaft formed by fitting grinding means;
A lower plate having an internal hole through which an object to be crushed and a plurality of rectangular guide holes are formed, a through hole through which crushed material passes, and a universal joint at a position corresponding to the guide hole. A plurality of upper plates provided on the main shaft, the upper plate being connected to the universal joint between the upper plate and the lower plate, and a lower end having a central shaft inserted into the guide hole. A pulverizing roll, the pulverizing means for rotating the main shaft by receiving power transmitted through the power transmitting means,
An annular stator provided along the circumference at a position corresponding to the grinding roll of the grinding means on the inner wall of the grinding chamber;
A packing that is fitted on the central axis and is in close contact with the upper and lower end faces of the grinding roll and is integrally formed with protrusions at positions close to the upper and lower end faces of the grinding roll. A crusher characterized by. The pulverizer according to claim 1, wherein a cone-shaped crushing material entry space is formed between an inner peripheral surface of the stator and an outer peripheral surface of the pulverization roll. The pulverizer according to claim 1, wherein an inner diameter of a wall surface extending downward from a peripheral edge of the discharge port of the pulverization chamber is gradually reduced to form a hopper portion. 2. The pulverization according to claim 1, wherein the discharge port is provided on a side surface of a lower end portion of the crushing chamber, and a discharge pipe for discharging a material to be crushed is provided in the discharge port provided on a lower end side surface of the crushing chamber. Machine.   The pulverizer according to claim 1, wherein the inner hole is formed in the adjustment block, and the adjustment block is detachably provided in the lower plate.